As research lead, Babakinejad felt it was his responsibility to raise these issues with Harper and other members of the team, and he did so in an email. He also raised his concerns with Ito. In an email, he told the director that the Open Agriculture Initiative had not been able to create a controlled environment in the food computers, and that the devices had been sent to schools and a refugee camp without being tested to ensure that they worked. He worried that Harper was misleading funders. Ito responded by asking if he could raise these issues with Harper. Babakinejad agreed to let Ito share his general concerns. (Ito did not respond to a request for comment. A Media Lab spokeswoman declined to comment.)
Harper's optimism helps raise money, and without money he won’t be able to see this dream of an international network of food computers come true. His critics, he said, “are basically jealous because I raise a lot of funding while giving away knowledge for free.” Harper also said that he doesn’t mislead the public. He’s explained his progress in great detail in a series of Medium posts, he said. Some may have misinterpreted his vision as current reality, he said, but if they listened closely they would not be mistaken. “Can you email a tomato to someone today? No,” he said. “Did I say that in my TED talk? Yes. Did I say it was today? No. I said, you will be able to email a tomato.”
It's true that Harper didn’t quite say that food computers can email tomatoes or apples, though you could be forgiven for thinking exactly that. He frequently leaves the impression that the project has achieved, or is on the brink of achieving, an enormous breakthrough. It’s a style that has attracted the sort of high-profile attention, not to mention corporate funding, that fuels projects at the MIT Media Lab, and his willingness to showcase food computers beset with problems feels consistent with Ito’s “deploy or die” philosophy.
“You seem to think endlessly reiterating untrue claims will lend them credibility, but it won’t,” Dr. Babakinejad wrote to Mr. Harper. “By persisting in this course of action, you have been putting M.I.T. and everyone associated with you at risk and I think it’s time that you were made to face up to that and take responsibility for it.”
The food computers, which researchers have envisioned selling to the public, are supposed to provide plants with just the right amount of light. But when the light function was not working, another member of the OpenAg team said, speaking on the condition of anonymity to describe sensitive events, an engineer manually rigged the device so that light would shine at the correct level during an important demonstration.
In an email exchange with Mr. Ito, Dr. Babakinejad expressed his concern about what he said were Mr. Harper’s false claims in a draft of the academic paper, the “60 Minutes” interview and lectures.
“Up to now,” Dr. Babakinejad wrote, “we have not been able to achieve a ‘controlled environment’ nor been able to create an atmosphere (Climate control) as he leads people to believe in his talks. His claims about developments such as implementations of image processing, microbiome dosing, creating different climates and collecting credible data from bots across the world are not true.”
Mr. Ito wrote in his reply: “Can I say that you have concerns about whether the food computers have been able to create a controlled environment which would put into questions some of the claims we make about the data and outcomes?”
Dr. Babakinejad replied in the affirmative, and the exchange ended.
And breeze in the street
I neglected loneliness
A warm winter street
I drew some strength
Created my future
I should be able to overcome
Because I have a dream
People look towards
The other side of sadness
At my side
Must lead to somebody's future.
Don't give up
Although what causes pedophilia is not yet known, researchers began reporting a series of findings linking pedophilia with brain structure and function, beginning in 2002. Testing individuals from a variety of referral sources inside and outside the criminal justice system as well as controls, these studies found associations between pedophilia and lower IQs, poorer scores on memory tests, greater rates of non-right-handedness, greater rates of school grade failure over and above the IQ differences, lesser physical height, greater probability of having suffered childhood head injuries resulting in unconsciousness, and several differences in MRI-detected brain structures.
Such studies suggest that there are one or more neurological characteristics present at birth that cause or increase the likelihood of being pedophilic. Some studies have found that pedophiles are less cognitively impaired than non-pedophilic child molesters. A 2011 study reported that pedophilic child molesters had deficits in response inhibition, but no deficits in memory or cognitive flexibility. Evidence of familial transmittability "suggests, but does not prove that genetic factors are responsible" for the development of pedophilia. A 2015 study indicated that pedophilic offenders have a normal IQ.
Another study, using structural MRI, indicated that male pedophiles have a lower volume of white matter than a control group. Functional magnetic resonance imaging (fMRI) has indicated that child molesters diagnosed with pedophilia have reduced activation of the hypothalamus as compared with non-pedophilic persons when viewing sexually arousing pictures of adults. A 2008 functional neuroimaging study notes that central processing of sexual stimuli in heterosexual "paedophile forensic inpatients" may be altered by a disturbance in the prefrontal networks, which "may be associated with stimulus-controlled behaviours, such as sexual compulsive behaviours". The findings may also suggest "a dysfunction at the cognitive stage of sexual arousal processing".
Blanchard, Cantor, and Robichaud (2006) reviewed the research that attempted to identify hormonal aspects of pedophiles. They concluded that there is some evidence that pedophilic men have less testosterone than controls, but that the research is of poor quality and that it is difficult to draw any firm conclusion from it.
While not causes of pedophilia themselves, childhood abuse by adults or comorbid psychiatric illnesses—such as personality disorders and substance abuse—are risk factors for acting on pedophilic urges. Blanchard, Cantor, and Robichaud addressed comorbid psychiatric illnesses that, "The theoretical implications are not so clear. Do particular genes or noxious factors in the prenatal environment predispose a male to develop both affective disorders and pedophilia, or do the frustration, danger, and isolation engendered by unacceptable sexual desires—or their occasional furtive satisfaction—lead to anxiety and despair?" They indicated that, because they previously found mothers of pedophiles to be more likely to have undergone psychiatric treatment, the genetic possibility is more likely.
A study analyzing the sexual fantasies of 200 heterosexual men by using the Wilson Sex Fantasy Questionnaire exam determined that males with a pronounced degree of paraphilic interest (including pedophilia) had a greater number of older brothers, a high 2D:4D digit ratio (which would indicate low prenatal androgen exposure), and an elevated probability of being left-handed, suggesting that disturbed hemispheric brain lateralization may play a role in deviant attractions.
Assistant - 契約社員 / Associate - 新入りレベル / Senior - 新入りレベルではない人、または、何年かはいる人 / Lead - 現場リーダー / Manager - とりまとめ担当者、または係長〜課長 / Director - 課長〜部長 / Vice President - 部長〜本部長 / Executive Vice President - 本部長〜執行役員 / Senior Executive Vice President - 取締役（CXO） / President - 社長（CEO）
Sales - 営業段階で動く人 / Services - 利用段階で動く人 / Engineering - 開発段階で動く人
|bet *||bust *||cast||cost||cut|
|set||shit *#||shut||sweat *||thrust|
|wet*||burst *||hurt||beat #||bid #|
Toxins are everywhere. Car exhaust, secondhand smoke, flame retardants, plastic packaging, heavy metals, pesticides, BPA-coated receipts… Unless you’re living in virgin forest, you’re going to come into contact with some less-than-optimal chemicals pretty much every day.
That’s definitely no reason to panic. In fact, small doses of toxins may be good for you because of a phenomenon called hormesis – mild stress makes your cells work more efficiently. However, your body can have trouble clearing certain toxins. You eliminate most of the bisphenol-A (BPA) and other plastics you ingest, but a small percentage hides away in your fat cells, messing with your hormones and accumulating over time. It’s the same deal with several mold toxins, heavy metals like lead, nickel, cadmium, mercury, and aluminum, and with certain pharmaceuticals and drugs like THC.
A good detox protocol can help you eliminate these more stubborn toxins. The trouble is that many common detoxes don’t work. Juice and water cleanses, for example, are often actually counterproductive because they deprive your body of essential nutrients it needs to function. That said, there are a few genuine ways to detox.
Because so many toxins stay in your fat cells, one way to detox is through lipolysis – breaking down your fat cells and releasing the hard-to-reach toxins stored within them. Lipolysis is especially effective when you combine it with liver and kidney support or adsorbents that can suck up the released toxins. This article focuses on all of the above. Let’s start with saunas.
1) Sauna sessions
Sweating does more than cool you off. It also helps you get rid of both heavy metals and xenobiotics – foreign compounds like plastics and petrochemicals – in small but significant amounts. A 2012 review of 50 studies found that sweating removes lead, cadmium, arsenic, and mercury, especially in people with high heavy metal toxicity . Another study put participants in both traditional and infrared saunas and found similar results . Sweating also eliminates hormone-disrupting BPA, which accumulates in your fat cells .
There’s debate about the best kind of sauna for detoxification. A couple studies have shown that infrared saunas are the most effective for detoxing, but the research was funded by infrared sauna companies, so the results are questionable. Both traditional and infrared saunas are effective for detoxing . That said, I prefer infrared saunas for a few reasons:
They don’t get as hot. Traditional saunas heat the air around you, while infrared light penetrates and heats your tissue directly. You sweat in an infrared sauna at around 130-150 degrees instead of at 180-200 degrees, so you can stay in for longer without feeling like you’re going to pass out. I’ve done 2-hour infrared sauna sessions (drinking salt water the whole time to replenish electrolytes and fluids, of course).
They’re easier on your electric bill. Again, infrared saunas require less energy, especially if you get a sauna that reflects infrared light back on you. This one, for example, costs about 15 cents an hour to run.
I personally use a Sunlighten infrared sauna and love it. If you don’t want to buy an infrared sauna and there isn’t one around you, a standard sauna will work perfectly well . There’s probably one in your local gym.
Keep in mind that sweating pulls electrolytes and trace minerals from your body, so it’s important to drink a lot of fluids and get plenty of salt (preferably Himalayan pink salt or another mineral-rich natural salt) if you’re going to use a sauna to detox .
Exercise is another way to flush toxins from your body, and through more than just making you sweat. Exercise increases lipolysis (the breakdown of fat tissue), releasing toxins stored in your fat tissue. Studies show that people who exercise and lose body fat end up with higher levels of circulating hormone disruptors . Increasing lipolysis through diet does the same thing .
Mobilizing toxins isn’t necessarily a good thing, particularly if you’re unequipped to get rid of them. You want to be sure you’re getting rid of toxins, not just moving them to a different part of your body. Working out addresses the issue to a degree: it improves circulation, providing more oxygen to your liver and kidneys so they can better filter out toxins. You can also give your system even more support and pull out bad stuff with the next two detox tools: activated charcoal and glutathione.
Activated charcoal is a form of carbon that has massive surface area and a strong negative charge. It’s been around for thousands of years and it’s still used in emergency rooms today to treat poisoning.
Charcoal binds to chemicals whose molecules have positive charges, including aflatoxin and other polar mycotoxins , BPA , and common pesticides . Once the chemicals attach to the charcoal you can pass them normally (i.e. poop them out).
Charcoal can bind to the good stuff, too, so I don’t recommend taking it within an hour of other supplements. Try taking a couple charcoal pills along with exercise or have a sauna session. They should adsorb many of the toxins you release into your gut and GI tract.
Glutathione is a powerful antioxidant that protects you from heavy metal damage, according to studies in both human and rat cells [9,10,11,12]. Glutathione also supports liver enzymes that break down mold toxins and heavy metals. Your digestion will destroy normal glutathione, so opt for a liposomal glutathione supplement that makes it through your stomach. You can also supplement with N-acetylcysteine and alpha-lipoic acid, which your body can use to build glutathione on its own . If you have severe heavy metal or mycotoxin poisoning, talk to a naturopath or functional medicine doctor about intravenous (IV) glutathione. It’s expensive and less convenient than an oral supplement, but it works very well.
We’ve talked about how heat and exercise can increase fat burning to detox your fat cells. It turns out cold can do the same. Cryochambers are gaining popularity with professional athletes and other high performers for their ability to quell inflammation. It turns out they can help you burn fat – and release the toxins stored in it – as well.
A cryochamber uses liquid nitrogen to supercool your body, stimulating mitochondrial function and decreasing inflammation. Intense cold also destroys fat cells, which has led to cryolipolysis therapy as a way to slim down [14,15]. You can use it to detox, too.
Quick disclaimer: I haven’t found studies specifically looking at ketosis and toxin load, so you may want to take this section with a grain of (Himalayan) salt. That said, ketosis is a very effective way to induce lipolysis, particularly if you’re fasting.
When you’re in ketosis and you haven’t eaten recently, your body breaks down your fat stores into free fatty acids, which it then converts to ketones for fuel. That means that, in theory, you should be able to supercharge your detox (and fat loss) by dropping into nutritional ketosis.
The Bulletproof Diet puts you into mild ketosis, which curbs your hunger and sharpens your brain without forcing you to forego carbs entirely. If you want to try nutritional ketosis for detoxing, you’ll have to modify the Bulletproof Diet slightly. Skip carb reefed days for a couple weeks and limit carbs to ~30-50 grams per day. You can use keto urine strips or – even better – a blood ketone meter to test and make sure you’re becoming fat-adapted. Once your levels read around 1.5 mg/dL, you’re comfortably in nutritional ketosis. At that point, fasting will attack your fat stores and mobilize toxins, which you can mop up with activated charcoal or sweat out (or both).
Chelation therapy is the strongest way to detox heavy metals. It can also be dangerous, so many doctors don’t recommend it unless you have moderate to severe heavy metal poisoning. Chelation therapy uses compounds called chelators that form strong bonds with heavy metals, leaving them unable to further poison your body. You can then pass them normally. Chelation therapy is very effective for removing lead, mercury, aluminum, arsenic, iron, and copper.
If you’ve been exposed to a lot of heavy metals, talk to a functional medicine doctor about chelation therapy. You really want to go to a medical professional for this one, because it’s so effective that if your liver and kidneys aren’t able to process the metals (a common problem in people with heavy metal poisoning) you can get seriously ill.
Combining detox methods for maximum effect
Each of these 7 methods works well on its own, and you can stack methods for an even greater effect. Exercise and sauna sessions are a good example. Preliminary evidence suggests that exercising and then hitting the sauna afterward will detoxify you better than either one alone does . With that in mind, here’s a sample detox protocol:
If you have a lot of fat and you’re burning it off quickly, you’re probably getting rid of a lot of toxins in one fell swoop, and you may get a headache, digestive problems, brain fog, etc. If that happens try taking more glutathione, vitamin C, and charcoal. Be sure you take charcoal at least an hour away from other supplements, as it binds to vitamin C.
Toxins are a fact of modern life, especially if you live in a city or somewhere with poor air quality, mold, and/or a lot of petrochemical byproducts. These detox methods can give your body a little extra support dealing with pollutants and help you perform your best.
あくまで一例だけど、無印のチームメンバーに対し、senior (メンタリング無しで自律的に業務を遂行したり、ジュニアメンバーのメンタリングができる)とか、lead (チームにおいて技術的な決断の責任を持ったり、方向性をまとめたりする)とか、manager (非技術メンバーも含め人事に関わる話だとか、技術以外の管理の責任も担う)とかあって、leadのポジションに応募しようと思ったらleadの経験かせめてseniorで何年かやりました、っていうのが必要だったり。これがいろんな分野をつまみ食い的に無印ポジションで経験してました、となるとjuniorで取るには妙に経験ありすぎるし、かといって特定分野のseniorとして自律的に動けるかが不明だし、使い方がわからないから採用見送り、なんてことになりかねない。
Changing a new laptop computer keyboard will be difficult regarding someone considering that it is without a doubt defined to become tech function though really isn't. Just by subsequent a number of easy steps one could replace the actual laptop key pad comfortably.
1st step is actually to ensure that you will have powered down the vitality and taken off the particular battery. Equally you might want to unplug this from switchboard to prevent just about any hassle. An individual will be through with the software, you ought to start all the laptop computer along with remove lots of the screws behind that. Even if various mobile computer models possess different screws but it is simple to choose the anchoring screws in order to them all.
Typically, all the keyboards are generally devote a plastic material sheet which happens to be screwed throughout the equipment. For that reason right here anyone must also get rid of the screws in an effort to get rid of those plastic-type sheets. Any time one can find absolutely no plastic-type material sheets after that probably right now there may be some clamps which is often deleted readily.
An individual will be through with the actual taking away the plastic material sheets right now there may be some cosmetic outstanding on the computer keys. All of these plastic material bits has to be removed cautious and it could be completed any help in various cosmetic choose and tooth find. It is actually highly recommended will not use almost any needle which is able to really problems another aspects of machines.
At this time you might be through with just about all screws inside the back, you need to take away the screws towards the top because in some laptop or pc units often times there are anchoring screws beginning which should end up being deleted before you really replace all the computer keys. When most of anchoring screws really are eliminated, you will see the laptop computer keyboard is something related to any thin knowledge lead that is straightaway that come with the actual motherboard best in the bottoom. To eliminate any laptop correctly, feel free to use the equivalent enamel pick to enable you to raise the plastic-type connectors which you'll find storing with this knowledge lead. You will see of the fact that entirely computer keyboard can be free professionals who log in very easily lift that up.
You will have successfully carried out the most important part and it's the moment you are able to replace that classic laptop or pc computer keyboard while using unique 1. Very first thing earliest, take the popular computer hp laptop keyboard out from the plastic page and remedy a repair anywhere between that cosmetic fittings that are existing for the chief panel. You will need to ensure that your comprehensive brand new keyboard set is set. These days include the info line very carefully. You need to use similar choose anyone used formerly to try the equivalent. Be sure that the entire openings as well as clamps are straight aligned along with the mess space as a result for all those securing that screws repeatedly, it is possible to finished the software as necessary. Lastly refasten your current laptop computer keyboard within the top and also if you wish to remove any specific cosmetic articles replicate the equivalent option a person achieved it up to now.
Now restricted most of the screws from again and get that laptop's solar battery funding the area to enable you to observe regardless if your own laptop have been replaced instead systematically or even in no way. An individual will be through with tensing all the screws, start up your current laptop considering the fact that a person hear numerous beeps in the beginning then very likely you might want to eradicate all of the procedures once again. See a BIOS through important F2 or DEL button to be sure of whether or not keyboard is actually tracked down to be had and not even.
In order to avoid the loss of the power problem, you want to keep the battery on both ends of the contact points and the battery cover internal clean. If the surface is very dirty words to use soft, clean dry cloth FuShi gently, can never use clean sex or the chemical has the solubility cleaner, such as diluent or contain alcohol solvent composition of the clean your digital camera, battery or charger.
For charging time, depends on the charger and battery, and whether the use of voltage stability, and other factors. Usually the first time to use the battery (or several months used battery) charging, li-ion batteries must more than six hours, the nimh batteries must be more than 14 hours, or future battery life will be short. And the battery and residual power, try not to repeat charging, to ensure the battery life.
Use process to avoid a discharge. A discharge is a power consumption over limit. Otherwise even recharge and its capacity cannot fully recover, for the battery is a kind of damage. Due to a discharge can lead to bad battery charging efficiency, reduce capacity, therefore camcorders are equipped with battery alarm function. So in similar circumstances should appear to replace the battery, try not to let the batteries run out and make the camcorders automatic shutdown.
If you plan to use a long time without digital camera, must want the battery from a digital camera or remove the charger, and the discharge completely, and then stored in a dry, cool and environment, and try to avoid the battery and general metal items stored in together. In order to avoid short-circuited batteries, in batteries need not when, should cover to protect its preservation.
The green environmental protection battery is to point to in recent years has been put into use or are development, the development of kind of high performance, no pollution batteries. At present already use large nickel metal hydride battery, the lithium ion battery and is expanded use of mercury free alkaline battery manganese zinc and rechargeable batteries and is research and development of lithium or lithium ion plastic pack and fuel cells belong to this category. In addition, it is widely used and use of solar energy for photoelectric convert solar cell (also called photovoltaic power generation), can also be included in this category.
Nickel metal hydride battery (Ni-MH) and nickel cadmium battery (Ni-Cd) have the same working voltage (1.2 V), due to the adoption of rare earth alloy or TiNi alloy anode materials for the activity of hydrogen storage material, replacing the carcinogen cadmium, which not only makes this battery became a kind of green environmental protection battery, and make a battery of energy than increased nearly 40%, to 80-60 Wh/kg and 210-240 Wh/L. The battery is 90 s gradually realize industrialization PANASONIC VW-VBK360 Battery , and the first to use in the cell phone battery. At present although it on their dominance of the gradually be lithium ion battery replaced, but mobile phone applications in Europe and America, and its market share is still at about 50%.
The lithium ion battery (Li-ion) is by can make the lithium ion embedding and take off the carbon embedded as negative, reversible intercalated-li metal oxide as the positive (LiCoO2, LiNiO2 or LiMn2O4) and organic electrolyte constitute, the working voltage of 3.6 V, so a lithium-ion battery is equivalent to three cadmium nickel metal hydride battery or nickel. Thus the batteries than energy is the over 100 Wh/kg and 280 Wh/L, and considerably more than the nickel metal hydride battery than energy. In view of the above advantages, since the 1993-2000 in just a few years, its production and usage with extremely high speed growth.
Alkaline manganese zinc dry (alkaline) compared with ordinary dry cell size has higher capacity PANASONIC CGA-S005E Battery, and have high discharge current ability. In recent years has been used on mercury zinc powder, therefore make the battery become a green battery, and become the mainstream battery products, at present the alkaline xinmeng dry cell is still BP machine use most power supply. At the same time, the world is the battery charged on the sex, an American company has launched a charged battery alkali manganese, product and application of slow growth. Such batteries keep the battery discharge characteristics, but also can be recharged using a dozen times to hundreds of times (deep recharge cycles life of about 25 times).
Lithium plastic battery (LIP) is for lithium metal anode, conductive polymers of electrolyte for new battery, the energy than has reached 170 Wh/kg and 350 Wh/L. The lithium ion battery is will present plastic of organic lithium ion battery electrolyte stored in a polymer membrane, or use conductive polymer as electrolyte, make a battery in no free the electrolyte. Such batteries can use aluminum plastic composite membrane realize hot pressing encapsulation, with light weight, shape can be arbitrary change, safety better characteristics.
Fuel cells (FC) is a kind of use of fuel (such as hydrogen or contain fuel) and antioxidant (such as pure oxygen or the oxygen in air) for power generation device directly, because avoided the carnot cycle limit, this power unit is not only high efficiency (electrochemical reactions conversion efficiency can be as high as 40% or more), and no pollution discharge gas, so is the future of efficient and clean power generation method. Many companies at home and abroad are engaged in development for mobile phones, notebook computers, the PEM fuel cell, once put into application, and its economy benefit greatly.
In addition to the above, in view of the communication industry growth, China's battery industry is with extremely high speed to promote environmental protection mercury-free alkali manganese zinc original pool and rechargeable batteries and seal lead-acid battery technology development and application expansion market.
When considering imagine consuming, getting easy methods to make use of the digital camera are probably the fundamental assignments on the establish. The examples below digital slr high-end camera lead provides basic fundamentals about options to partner with an individual's camera and as a consequence assist you greater establish the standard terminology mandatory.
Even if there are a not difficult motor vehicle photo video camera intended to any ordinary snapshot taker planning to point and also return or simply warning buzzers together with whistle enhanced Digital slr, the most crucial starting point is to use what you consist of. If you have had for no reason undoubtedly,Panasonic HDC-TM900 Charge do not forget to evaluate any hands-on plus try out to achieve the just about all working experience you could as a result. A good number of manuals can verify all to consider about precisely how towards employ that video camera. Keep in mind, it should receive baffling you will be know simple digital camera words.
1. Shutter Full speed
step 2. Aperture
A good number of a handful of situations the many examine various things holdings and even debts high-end cameras which will understand cope with the simplest way and also variety of lighting is likely to be allow in the digicam to make sure you set-up scenes. Taking photographs is Panasonic VW-VBN260 Battery focused lumination in addition to minor innovations through soothing is commonly addressed feel gigantic has effects on on what this persona success considering.
Whatever aperture in our video camera is actually which usually "iris-like" product the opens and as well turns. The item appliances just how much light-weight is usually earn all around via the bit of throw away. The larger any sort of ditch, the greater light make it possible for round. This really is fantastic with F-Stops the moment f5. 6 is usually a considerable primary as opposed to f16 are sometimes small to medium sized primary. You need a much larger initially suitable for dark surrounds in addition to a less starting off suitable very dazzling illnesses.
In relation to aperture adjustments the figures on a fabulous throw away the fact that brightness switches into because of, almost any shutter accelerate apparatus just how long this approach light-weight is actually come up with interior. A nice shutter swiftness connected with 1/500 is going to make very low minor utilizing not like a lengthier shutter fee approximately 1/5 need after only supplemental moderate. It's fantastic with secs. You need to work with painless shutter facts convert gears designed for circumstances by means of many moderate aside from systematic shutter rates of speed when particularly full experiences.
Any sort of ISO adjustments a fabulous tenderness of the "film". Intended for camcorders, whereas it doesn't management picture presently, everything adjustments a fabulous tenderness with the high-end camera sensor. A greater ISO options can certainly help produce styles photograph become faster and as well demand even less smooth compared to a decreased ISO. Strangling part of managing great ISO is probably of the fact that enhanced ISO's ordinarily result in a detraction at the time of envision first-class high quality as well as almond.
At the moment knowing the exact a couple of valuable symbol photo digital portrait photography useful tips future move is usually to see how a large amount of several associated with routine aside throughout both as well as the option to select the right configuration settings for each solo! A bunch of security surveillance cameras own methods the moment anyone software one of these simple together with security surveillance camera might easily consider useful configuration settings with the sleeping. A couple selections usually are shutter priority along with Panasonic VW-VBK180 Battery aperture the main ageda once approximately just about every individual individuals manage probably lots of the shutter accelerate or even this particular aperture.
The final fundamental digital slr high-end camera efficiency content is usually intent. A bunch of security surveillance cameras own automotive intend that's characteristically poor along with translates to fluffy photos often. The most effective will be to realize how to work together with intelligent emphasizing in addition to using the services of main aim metering that will help methodically tutorial put focus.
Digital camera battery is the key for the key, second in importance only lens I’m afraid, and in order to photograph in your heart, a powerful battery to provide power as a follow-up is essential. But even the best battery time, if not properly carry out maintenance and maintenance, will not take long to lose the strong power, so battery maintenance is very important.
For a (section) digital camera battery for the duration of use, not just its quality, power on, in fact, the use of operations with the user also has great relevance. Most photographers are used after every use of the camera on the camera bag inside, or on the cupboard, took out the battery is not kept separately, this approach sounds fine, but not conducive to battery protection.
If more than 15 days do not usually use the camera, it is best to remove the battery from the camera inside the store alone, save the environment, it is best to dry and cool place, and do not store the battery together with metal objects.
According to our survey, you can buy in the market most digital cameras use lithium batteries, it is relatively easy to store. The only caveat is that if not used for long, preferably at intervals of 2 months to activate a battery, which is the charge and discharge time, this can effectively extend battery life.
As for the Ni-MH battery 5, the most annoying is the memory effect, this effect will reduce the overall battery capacity and the use of time, and as time goes on, less and less stored charge, the battery will consume the more you have to faster. Therefore, we should try to run out of power rechargeable, each charge must be sufficient to power the most full.
If you go out, the temporary use of alkaline batteries, we must remember that time out, or when unused for long periods, the battery is easy to Tangshui corrosion circuit, the digital camera battery could not escape the destiny scrapped.
For users of alkaline batteries, already mentioned above, remember the point is finished using the digital camera, remove the battery must remember to avoid the phenomenon of cell sap and damage the machine.
As for the use of rechargeable nickel-metal hydride batteries and lithium users. Battery charge is very particular about, bought back the batteries are generally very low or no power consumption, the first charge must be adequate. Lithium battery charging time is generally longer than 8 hours, while the Ni-MH battery charging time is generally more than 16 hours. To achieve best results, that is, the battery has reached its maximum capacity, generally more than 3 times repeated charge-discharge can. Battery with three times, the best opportunity to find a completely exhausted battery to charge again, try not to charge the battery when there are remnants of repeated charge, or will shorten battery life. After the battery charge is generally more heat, it is best to be cool and then into the camera battery.
In addition, in order to avoid the loss of electricity, the use of nickel-metal hydride battery user, charging is completed, remove the battery, do not let the battery contact with the conductor while the positive and negative poles, for example, do not use your fingers touch both ends of the battery. The use of lithium users should try to keep the camera inside the battery positive and negative battery contacts clean, if necessary, wipe with a dry cloth and then gently wipe the battery.
Also note that, even if the user is to use lithium batteries, digital camera in a long time when not in use, should be completely discharged, remove the battery, stored in a dry, cool environment. The other thing to note is that both the nickel-hydrogen batteries or lithium batteries using the user, it is best not to have a charged battery on the purse, pocket, bag or container with metal objects, in order to prevent short-circuit .
1, to avoid frequent use of flash: If you are not professional photographers, then, except in the invisible fingers of the night, the light intensity of an ordinary day for the average digital camera, it is enough.
2, try to avoid unnecessary zoom operation: zoom the camera lens stretched it out a reduction, is power digital camera battery. You can move the pace of hyperactivity, with “artificial zoom” approach instead of “camera zoom” to save power.
3, Do not let the screen has been lit: If the case of small power, can turn off the LCD screen, use the viewfinder to adjust the picture composition, is for a digital camera, LCD should be considered the most power-hungry components, general digital camera, LCD screen after closing time can be used when the original length of about 3 times.
4, less shooting and video: minimize the use of multi-shot feature and video capture video, as the completion of these functions is to use the built-in buffer body to temporarily save the screen shot, the power consumption a lot.
5, should not frequently open, shut down: Many users know that the display stays lit is power, so in order to save electricity use to frequent opening and shutdown. In fact, frequently open, shut down the electricity wasted consumption than bright display even more, especially for larger diameter lenses, but also requires a substantial expansion of the camera, the switch is power. Most digital cameras have automatic shutdown option, this setting should not be set too short, otherwise easily lead to frequent opening and shut down. Of course, frequent artificial opening, shut down and should be avoided.
6, optical image stabilization not normally open: Optical image stabilization is by driving the lens or image sensor pack components, offset by the subject matter images and the relative motion between the sensor achieved. Either way the optical image stabilization, would result in no small power consumption, in particular some models can be anti-shake mode is set to “always on” so that power loss will be caused by the more powerful. To this end, we have a good scene in the light should turn off the optical image stabilization feature, you must use, should also be less “always on” mode.
February With the world going mobile and billions of new devices requiring electrical storage, battery technology is almost certainly due for a renaissance in the near future and recent developments suggest MIT will play a role in the next significant battery technology. Less than a week ago, we reported on work being done by MIT's Laboratory for Electromagnetic and Electronic Systems (LEES) that could become the first technologically significant and economically viable alternative to conventional batteries in 200 years. Now a second new and highly promising battery technology is emerging from MIT - a new type of lithium battery that could become a cheaper alternative to the batteries that now power hybrid electric cars.
Until now, lithium batteries have not had the rapid charging capability or safety level needed for use in cars. Hybrid cars now run on nickel metal hydride batteries, which power an electric motor and can rapidly recharge while the car is decelerating or standing still.
But lithium nickel manganese oxide, described in a paper to be published in Science on Feb. 17, could revolutionize the hybrid car industry -- a sector that has "enormous growth potential," says Gerbrand Ceder, MIT professor of materials science and engineering, who led the project.
The new material is more stable (and thus safer) than lithium cobalt oxide batteries, which are used to power small electronic devices like cell phones, laptop computers, rechargeable personal digital assistants (PDAs) and such medical devices as pacemakers.
The small safety risk posed by lithium cobalt oxide is manageable in small devices but makes the material not viable for the larger batteries needed to run hybrid cars, Ceder said. Cobalt is also fairly expensive, he said.
Scientists already knew that lithium nickel manganese oxide could store a lot of energy, but the material took too long to charge to be commercially useful. The MIT researchers set out to modify the material's structure to make it capable of charging and discharging more quickly.
Lithium nickel manganese oxide consists of layers of metal (nickel and manganese) separated from lithium layers by oxygen. The major problem with the compound was that the crystalline structure was too "disordered," meaning that the nickel and lithium were drawn to each other, interfering with the flow of lithium ions and slowing down the charging rate.
Lithium ions carry the battery's charge, so to maximize the speed at which the battery can charge and discharge, the researchers designed and synthesized a material with a very ordered crystalline structure, allowing lithium ions to freely flow between the metal layers.
A battery made from the new material can charge or discharge in about 10 minutes -- about 10 times faster than the unmodified lithium nickel manganese oxide. That brings it much closer to the timeframe needed for hybrid car batteries, Ceder said.
The lead author on the research paper is Kisuk Kang, a graduate student in Ceder's lab. Ying Shirley Meng, a postdoctoral associate in materials science and engineering at MIT, and Julien Breger and Clare P. Grey of the State University of New York at Stony Brook are also authors on the paper.
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When the diesel generators were gone, the reactor operators switched to emergency battery power. The batteries were designed as one of the backups to the backups, to provide power for cooling the core for 8 hours. And they did.
Within the 8 hours, another power source had to be found and connected to the power plant. The power grid was down due to the earthquake. The diesel generators were destroyed by the tsunami. So mobile diesel generators were trucked in.
This is where things started to go seriously wrong. The external power generators could not be connected to the power plant (the plugs did not fit). So after the batteries ran out, the residual heat could not be carried away any more.
At this point the plant operators begin to follow emergency procedures that are in place for a “loss of cooling event”. It is again a step along the “Depth of Defense” lines. The power to the cooling systems should never have failed completely, but it did, so they “retreat” to the next line of defense. All of this, however shocking it seems to us, is part of the day-to-day training you go through as an operator, right through to managing a core meltdown.
It was at this stage that people started to talk about core meltdown. Because at the end of the day, if cooling cannot be restored, the core will eventually melt (after hours or days), and the last line of defense, the core catcher and third containment, would come into play.
But the goal at this stage was to manage the core while it was heating up, and ensure that the first containment (the Zircaloy tubes that contains the nuclear fuel), as well as the second containment (our pressure cooker) remain intact and operational for as long as possible, to give the engineers time to fix the cooling systems.
Because cooling the core is such a big deal, the reactor has a number of cooling systems, each in multiple versions (the reactor water cleanup system, the decay heat removal, the reactor core isolating cooling, the standby liquid cooling system, and the emergency core cooling system). Which one failed when or did not fail is not clear at this point in time.
So imagine our pressure cooker on the stove, heat on low, but on. The operators use whatever cooling system capacity they have to get rid of as much heat as possible, but the pressure starts building up. The priority now is to maintain integrity of the first containment (keep temperature of the fuel rods below 2200°C), as well as the second containment, the pressure cooker. In order to maintain integrity of the pressure cooker (the second containment), the pressure has to be released from time to time. Because the ability to do that in an emergency is so important, the reactor has 11 pressure release valves. The operators now started venting steam from time to time to control the pressure. The temperature at this stage was about 550°C.
This is when the reports about “radiation leakage” starting coming in. I believe I explained above why venting the steam is theoretically the same as releasing radiation into the environment, but why it was and is not dangerous. The radioactive nitrogen as well as the noble gases do not pose a threat to human health.
At some stage during this venting, the explosion occurred. The explosion took place outside of the third containment (our “last line of defense”), and the reactor building. Remember that the reactor building has no function in keeping the radioactivity contained. It is not entirely clear yet what has happened, but this is the likely scenario: The operators decided to vent the steam from the pressure vessel not directly into the environment, but into the space between the third containment and the reactor building (to give the radioactivity in the steam more time to subside). The problem is that at the high temperatures that the core had reached at this stage, water molecules can “disassociate” into oxygen and hydrogen – an explosive mixture. And it did explode, outside the third containment, damaging the reactor building around. It was that sort of explosion, but inside the pressure vessel (because it was badly designed and not managed properly by the operators) that lead to the explosion of Chernobyl. This was never a risk at Fukushima. The problem of hydrogen-oxygen formation is one of the biggies when you design a power plant (if you are not Soviet, that is), so the reactor is build and operated in a way it cannot happen inside the containment. It happened outside, which was not intended but a possible scenario and OK, because it did not pose a risk for the containment.
So the pressure was under control, as steam was vented. Now, if you keep boiling your pot, the problem is that the water level will keep falling and falling. The core is covered by several meters of water in order to allow for some time to pass (hours, days) before it gets exposed. Once the rods start to be exposed at the top, the exposed parts will reach the critical temperature of 2200 °C after about 45 minutes. This is when the first containment, the Zircaloy tube, would fail.
And this started to happen. The cooling could not be restored before there was some (very limited, but still) damage to the casing of some of the fuel. The nuclear material itself was still intact, but the surrounding Zircaloy shell had started melting. What happened now is that some of the byproducts of the uranium decay – radioactive Cesium and Iodine – started to mix with the steam. The big problem, uranium, was still under control, because the uranium oxide rods were good until 3000 °C. It is confirmed that a very small amount of Cesium and Iodine was measured in the steam that was released into the atmosphere.
It seems this was the “go signal” for a major plan B. The small amounts of Cesium that were measured told the operators that the first containment on one of the rods somewhere was about to give. The Plan A had been to restore one of the regular cooling systems to the core. Why that failed is unclear. One plausible explanation is that the tsunami also took away / polluted all the clean water needed for the regular cooling systems.
The water used in the cooling system is very clean, demineralized (like distilled) water. The reason to use pure water is the above mentioned activation by the neutrons from the Uranium: Pure water does not get activated much, so stays practically radioactive-free. Dirt or salt in the water will absorb the neutrons quicker, becoming more radioactive. This has no effect whatsoever on the core – it does not care what it is cooled by. But it makes life more difficult for the operators and mechanics when they have to deal with activated (i.e. slightly radioactive) water.
In order to prevent a core meltdown, the operators started to use sea water to cool the core. I am not quite sure if they flooded our pressure cooker with it (the second containment), or if they flooded the third containment, immersing the pressure cooker. But that is not relevant for us.
The point is that the nuclear fuel has now been cooled down. Because the chain reaction has been stopped a long time ago, there is only very little residual heat being produced now. The large amount of cooling water that has been used is sufficient to take up that heat. Because it is a lot of water, the core does not produce sufficient heat any more to produce any significant pressure. Also, boric acid has been added to the seawater. Boric acid is “liquid control rod”. Whatever decay is still going on, the Boron will capture the neutrons and further speed up the cooling down of the core.
The plant came close to a core meltdown. Here is the worst-case scenario that was avoided: If the seawater could not have been used for treatment, the operators would have continued to vent the water steam to avoid pressure buildup. The third containment would then have been completely sealed to allow the core meltdown to happen without releasing radioactive material. After the meltdown, there would have been a waiting period for the intermediate radioactive materials to decay inside the reactor, and all radioactive particles to settle on a surface inside the containment. The cooling system would have been restored eventually, and the molten core cooled to a manageable temperature. The containment would have been cleaned up on the inside. Then a messy job of removing the molten core from the containment would have begun, packing the (now solid again) fuel bit by bit into transportation containers to be shipped to processing plants. Depending on the damage, the block of the plant would then either be repaired or dismantled.
・Some radiation was released when the pressure vessel was vented. All radioactive isotopes from the activated steam have gone (decayed). A very small amount of Cesium was released, as well as Iodine. If you were sitting on top of the plants’ chimney when they were venting, you should probably give up smoking to return to your former life expectancy. The Cesium and Iodine isotopes were carried out to the sea and will never be seen again.
・There was some limited damage to the first containment. That means that some amounts of radioactive Cesium and Iodine will also be released into the cooling water, but no Uranium or other nasty stuff (the Uranium oxide does not “dissolve” in the water). There are facilities for treating the cooling water inside the third containment. The radioactive Cesium and Iodine will be removed there and eventually stored as radioactive waste in terminal storage.
・The seawater used as cooling water will be activated to some degree. Because the control rods are fully inserted, the Uranium chain reaction is not happening. That means the “main” nuclear reaction is not happening, thus not contributing to the activation. The intermediate radioactive materials (Cesium and Iodine) are also almost gone at this stage, because the Uranium decay was stopped a long time ago. This further reduces the activation. The bottom line is that there will be some low level of activation of the seawater, which will also be removed by the treatment facilities.
・I believe the most significant problem will be a prolonged power shortage. About half of Japan’s nuclear reactors will probably have to be inspected, reducing the nation’s power generating capacity by 15%. This will probably be covered by running gas power plants that are usually only used for peak loads to cover some of the base load as well. That will increase your electricity bill, as well as lead to potential power shortages during peak demand, in Japan.
He is a PhD Scientist, whose father has extensive experience in Germany’s nuclear industry. I asked him to write this information to my family in Australia, who were being made sick with worry by the media reports coming from Japan. I am republishing it with his permission.
I am writing this text (Mar 12) to give you some peace of mind regarding some of the troubles in Japan, that is the safety of Japan’s nuclear reactors. Up front, the situation is serious, but under control. And this text is long! But you will know more about nuclear power plants after reading it than all journalists on this planet put together.
By “significant” I mean a level of radiation of more than what you would receive on – say – a long distance flight, or drinking a glass of beer that comes from certain areas with high levels of natural background radiation.
I have been reading every news release on the incident since the earthquake. There has not been one single (!) report that was accurate and free of errors (and part of that problem is also a weakness in the Japanese crisis communication). By “not free of errors” I do not refer to tendentious anti-nuclear journalism – that is quite normal these days. By “not free of errors” I mean blatant errors regarding physics and natural law, as well as gross misinterpretation of facts, due to an obvious lack of fundamental and basic understanding of the way nuclear reactors are build and operated. I have read a 3 page report on CNN where every single paragraph contained an error.
The plants at Fukushima are so called Boiling Water Reactors, or BWR for short. Boiling Water Reactors are similar to a pressure cooker. The nuclear fuel heats water, the water boils and creates steam, the steam then drives turbines that create the electricity, and the steam is then cooled and condensed back to water, and the water send back to be heated by the nuclear fuel. The pressure cooker operates at about 250 °C.
The nuclear fuel is uranium oxide. Uranium oxide is a ceramic with a very high melting point of about 3000 °C. The fuel is manufactured in pellets (think little cylinders the size of Lego bricks). Those pieces are then put into a long tube made of Zircaloy with a melting point of 2200 °C, and sealed tight. The assembly is called a fuel rod. These fuel rods are then put together to form larger packages, and a number of these packages are then put into the reactor. All these packages together are referred to as “the core”.
The core is then placed in the “pressure vessels”. That is the pressure cooker we talked about before. The pressure vessels is the second containment. This is one sturdy piece of a pot, designed to safely contain the core for temperatures several hundred °C. That covers the scenarios where cooling can be restored at some point.
The entire “hardware” of the nuclear reactor – the pressure vessel and all pipes, pumps, coolant (water) reserves, are then encased in the third containment. The third containment is a hermetically (air tight) sealed, very thick bubble of the strongest steel. The third containment is designed, built and tested for one single purpose: To contain, indefinitely, a complete core meltdown. For that purpose, a large and thick concrete basin is cast under the pressure vessel (the second containment), which is filled with graphite, all inside the third containment. This is the so-called “core catcher”. If the core melts and the pressure vessel bursts (and eventually melts), it will catch the molten fuel and everything else. It is built in such a way that the nuclear fuel will be spread out, so it can cool down.
This third containment is then surrounded by the reactor building. The reactor building is an outer shell that is supposed to keep the weather out, but nothing in. (this is the part that was damaged in the explosion, but more to that later).
The uranium fuel generates heat by nuclear fission. Big uranium atoms are split into smaller atoms. That generates heat plus neutrons (one of the particles that forms an atom). When the neutron hits another uranium atom, that splits, generating more neutrons and so on. That is called the nuclear chain reaction.
Now, just packing a lot of fuel rods next to each other would quickly lead to overheating and after about 45 minutes to a melting of the fuel rods. It is worth mentioning at this point that the nuclear fuel in a reactor can *never* cause a nuclear explosion the type of a nuclear bomb. Building a nuclear bomb is actually quite difficult (ask Iran). In Chernobyl, the explosion was caused by excessive pressure buildup, hydrogen explosion and rupture of all containments, propelling molten core material into the environment (a “dirty bomb”). Why that did not and will not happen in Japan, further below.
In order to control the nuclear chain reaction, the reactor operators use so-called “moderator rods”. The moderator rods absorb the neutrons and kill the chain reaction instantaneously. A nuclear reactor is built in such a way, that when operating normally, you take out all the moderator rods. The coolant water then takes away the heat (and converts it into steam and electricity) at the same rate as the core produces it. And you have a lot of leeway around the standard operating point of 250°C.
The challenge is that after inserting the rods and stopping the chain reaction, the core still keeps producing heat. The uranium “stopped” the chain reaction. But a number of intermediate radioactive elements are created by the uranium during its fission process, most notably Cesium and Iodine isotopes, i.e. radioactive versions of these elements that will eventually split up into smaller atoms and not be radioactive anymore. Those elements keep decaying and producing heat. Because they are not regenerated any longer from the uranium (the uranium stopped decaying after the moderator rods were put in), they get less and less, and so the core cools down over a matter of days, until those intermediate radioactive elements are used up.
There is a second type of radioactive material created, outside the fuel rods. The big main difference up front: Those radioactive materials have a very short half-life, that means that they decay very fast and split into non-radioactive materials. By fast I mean seconds. So if these radioactive materials are released into the environment, yes, radioactivity was released, but no, it is not dangerous, at all. Why? By the time you spelled “R-A-D-I-O-N-U-C-L-I-D-E”, they will be harmless, because they will have split up into non radioactive elements. Those radioactive elements are N-16, the radioactive isotope (or version) of nitrogen (air). The others are noble gases such as Xenon. But where do they come from? When the uranium splits, it generates a neutron (see above). Most of these neutrons will hit other uranium atoms and keep the nuclear chain reaction going. But some will leave the fuel rod and hit the water molecules, or the air that is in the water. Then, a non-radioactive element can “capture” the neutron. It becomes radioactive. As described above, it will quickly (seconds) get rid again of the neutron to return to its former beautiful self.
I will try to summarize the main facts. The earthquake that hit Japan was 7 times more powerful than the worst earthquake the nuclear power plant was built for (the Richter scale works logarithmically; the difference between the 8.2 that the plants were built for and the 8.9 that happened is 7 times, not 0.7). So the first hooray for Japanese engineering, everything held up.
When the earthquake hit with 8.9, the nuclear reactors all went into automatic shutdown. Within seconds after the earthquake started, the moderator rods had been inserted into the core and nuclear chain reaction of the uranium stopped. Now, the cooling system has to carry away the residual heat. The residual heat load is about 3% of the heat load under normal operating conditions.
The earthquake destroyed the external power supply of the nuclear reactor. That is one of the most serious accidents for a nuclear power plant, and accordingly, a “plant black out” receives a lot of attention when designing backup systems. The power is needed to keep the coolant pumps working. Since the power plant had been shut down, it cannot produce any electricity by itself any more.
Things were going well for an hour. One set of multiple sets of emergency Diesel power generators kicked in and provided the electricity that was needed. Then the Tsunami came, much bigger than people had expected when building the power plant (see above, factor 7). The tsunami took out all multiple sets of backup Diesel generators.
When designing a nuclear power plant, engineers follow a philosophy called “Defense of Depth”. That means that you first build everything to withstand the worst catastrophe you can imagine, and then design the plant in such a way that it can still handle one system failure (that you thought could never happen) after the other. A tsunami taking out all backup power in one swift strike is such a scenario. The last line of defense is putting everything into the third containment (see above), that will keep everything, whatever the mess, moderator rods in our out, core molten or not, inside the reactor.