h***y
发帖数: 4936 | 1 正好版上在讨论能源，煤制天然气这个感觉并不可持续的能源转换方式为什么最近很热
门？
首先是一家麻省的小公司刚拿了国内一个大订单。
Bluer Skies For Shanghai? U.S. Start-Up Strikes $1.25 Billion Deal To Turn
Chinese Coal Into Natural Gas
“GreatPoint Energy on Friday announced its $1.25 billion partnership with
industrial conglomerate China Wanxiang Holdings to build a large-scale plant
that should produce about 0.5% of China’s projected energy needs by 2015,
according to the companies.”
---------------
http://blogs.wsj.com/venturecapital/2012/02/20/bluer-skies-f... 阅读全帖 |
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W*****d
发帖数: 4196 | 2 http://www.businessweek.com/articles/2012-03-14/the-great-brain
AkzoNobel
(Houston unit, Dutch paint company)
Qinggui Zeng, formulation chemist. Came from China on student visa in 1996,
hired in 2005. Pleaded guilty in 2008 to stealing formula for an industrial
epoxy-based, fireproof coating. Prosecutors said he was planning to return
to China and had solicited investors for a Chinese venture to make and sell
the coating as his own. Trade secrets found under insulation in attic space
at his home... 阅读全帖 |
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d*********o
发帖数: 6388 | 3 http://www.sciencealert.com/audi-have-successfully-made-diesel-
Audi have successfully made diesel fuel from carbon dioxide and water
German car manufacturer Audi has reportedly invented a carbon-neutral diesel
fuel, made solely from water, carbon dioxide and renewable energy sources.
And the crystal clear 'e-diesel' is already being used to power the Audi A8
owned by the country’s Federal Minister of Education and Research, Johanna
Wanka. |
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o***n
发帖数: 2074 | 4 能想象一下在这个环境下怎么生活么？
http://aqicn.org/city/hebei/shijiazhuangshi/gaoxinqu/
High-tech zone, Shijiazhuang AQI: High-tech zone, Shijiazhuang Real-time
Air Quality Index (AQI).
690
Hazardous
Updated on Sunday 5:00
Primary pollutant: pm10
Current Past 48 hours data Min Max
PM2.5 AQI
576 High-tech zone, Shijiazhuang PM25 (fine particulate matter)
measured by Hebei Province Environment Protection Agency (河北省空气质量自动
发布系统). Values are converted to the US EPA AQI standard. 259 ... 阅读全帖 |
|
发帖数: 1 | 5 Naval History and Heritage Command
Naval History and Heritage Command
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South Dakota I (Armored Cruiser No. 9)
1902... 阅读全帖 |
|
r******e
发帖数: 344 | 6 5 Surprising Scientific Facts About Earth's Climate
1. Climate Has Always Changed—Always
All proxy temperature data sets reveal that there have been cyclical changes
in climate in the past 10,000 years. There is not a single climate
scientist who denies this well-established fact. It doesn’t matter what
your position on the causes and magnitude and danger (or not) of current
climate change is—you have to be on board on this one. Climate has always
changed. And it has changed in both directions, ... 阅读全帖 |
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l****z
发帖数: 29846 | 7 与奥巴马、戈尔关系密切的芝加哥碳交易市场崩盘：一吨二氧化碳的排放权的最后价格
是：5美分，是数学 上可能的最低价，因为一吨交易费的也是5美分。戈尔在此之前已
逃离
http://wattsupwiththat.com/2010/10/26/us-carbon-trading-not-worth-a-plug-nickel/
US Carbon trading – not worth a plug nickel
Posted on October 26, 2010 by Anthony Watts
I wrote a few weeks ago that The only lower price than today’s closing
price on a ton of carbon is ZERO. That’s true now more than ever. See the
chart below from yesterday’s close of the Chicago Climate Exchange:
And it’s still crashing. Last wee... 阅读全帖 |
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l****z
发帖数: 29846 | 8 Tuesday, May 31, 2011
By Matt Cover
(CNSNews.com) – John Bryson, President Barack Obama's nominee to be
secretary of commerce, said it was “incredibly important” that the United
States pass cap and trade legislation and that America needed to be a global
leader in combating man-made global warming.
“I regard it as incredibly important that the United States comes forth in
this year with federal climate change legislation as a foundation for moving
ahead,” Bryson told the U.N. International Energ... 阅读全帖 |
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l****z
发帖数: 29846 | 9 By Peter Wilson
Australian science writer Jo Nova estimates that since 1989 the U.S.
government has spent $79 billion on global warming-friendly climate research
. Nova notes that the "figure does not include money from other western
governments, private industry, [or universities] and is not adjusted for
inflation," and yet even this partial sum is 3,500 times the $23 million
spent by Exxon in the same period. Global warming alarmists however continue
to accuse skeptics of being duped by disinf... 阅读全帖 |
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l****z
发帖数: 29846 | 10 “Computer models have greatly exaggerated how much warming additional CO2
can cause”
January 28, 2012 | Posted by Rick Rice
Don Surber is airing some most inconvenient facts:
Global-warming-hoax-cartoon16 actual scientists have joined 1973 Nobel-
winning physicist Ivar Giaever in calling global warming concerns overblown.
In a letter published in the Wall Street Journal today, the scientists
called for everyone to remain calm — and mocked the alarmism by UN
bureaucrats over global warming a... 阅读全帖 |
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l****z
发帖数: 29846 | 11 August 2, 2012 by David Robertson
Every now and then, someone will try to prevent a debate about global
warming by claiming that a consensus of earth scientists supports the
existence of anthropogenic global warming. Well, that so-called “consensus
” is imaginary.
In July of 2008, The Hindu newspaper (India’s national newspaper) published
an article titled “Challenging the basis of Kyoto Protocol”.
Here is an excerpt from that article:
As western nations step up pressure on India and China ... 阅读全帖 |
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l****z
发帖数: 29846 | 12 Obama Seeks Death Blow to Economy With Absurd Carbon Proposal
by Jammie via Jammie Wearing Fools
Not content with a contracting GDP, massive unemployment and the crushing
effects of ObamaCare, Obama today will today announce ridiculous EPA
regulations designed to destroy the economy under the guise of combating so-
called climate change.
The Obama administration will seek to cut greenhouse gas emissions from
existing power plants 30% from 2005 levels by 2030, potentially one of the
biggest s... 阅读全帖 |
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l****z
发帖数: 29846 | 13 By Patrick J. Michaels
This article appeared on National Review (Online) on May 30, 2014.
On June 2, the Environmental Protection Agency is going to announce new
rules for existing coal-fired power plants, most likely a 20 percent
reduction in allowable carbon dioxide emissions. The only way this will be
possible will be by upgrading almost all combustion units, and the ultimate
cost of the upgrades will make coal noncompetitive with much-less-expensive
natural gas–fired facilities.
The EPA’s pr... 阅读全帖 |
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l****z
发帖数: 29846 | 14 GAO: Gov't waste of natural gas costing taxpayers millions
By HOPE YEN | May 6, 2015 | 3:15 PM EDT
WASHINGTON (AP) — Significant amounts of natural gas on federal lands are
being wasted, costing taxpayers tens of millions of dollars each year and
adding to harmful greenhouse gas emissions, a congressional investigation
has found.
The nonpartisan Government Accountability Office also said the Bureau of
Land Management failed to conduct production inspections for hundreds of
high-priority oil and ... 阅读全帖 |
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g********2
发帖数: 6571 | 15 This past March, 17 attorneys general launched a coordinated effort to
investigate, pursue and prosecute companies, think tanks and other
organizations that say there is little credible evidence that human “
greenhouse gas” emissions are causing “dangerous” or “catastrophic”
manmade climate change.
The AGs said their targets’ actions constitute “fraud” – which they
described as using “polished public relations campaigns” to “muddle the
truth,” “discredit prevailing climate science,” and “mislead... 阅读全帖 |
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r*********t
发帖数: 4911 | 17 真理越辩越明。我后来核实过，这的确是我搞错了。rcp8.5本身就只是一个模型.我在
前面用rcp8.5批判巴马的确不妥。但是我说过，我手上的数据不止一个，比如说下面的
网站统计了来自62个地方的全国抽样调查，调查了Carbon Monoxide，Lead，Nitrogen
Dioxide，Ozone，Particulate Matter (PM10，Particulate Matter (PM2.5），
Sulfur Dioxide 等空气污染物在全国的水平. 这些数据现实巴马在环境保护上，并不
比小布什好多少。
https://www.epa.gov/air-trends
2050 |
|
发帖数: 1 | 18 首先，必须夸奖你一声！这年头在网上无知无耻的人比比皆是，而你能够第二次跟我认
错，实属难能可贵！加上你从不骂粗口，这份好教养好素质，难得！
言归正传：
我的哥哥萝卜冻，我以前是不是跟你说过好几次，说你急于攻敌，以至于抓不到重点、
破绽百出，有没有？你现在又在犯同样的错误。
你急于证明奥巴马是坏蛋，先是抓了 RCP8.5 当宝贝，现在又抓了这些 EPA 数字当宝
贝，想也不想地铁口直断：奥巴马比小布什 ”好不了多少”。哥哥，你错了，你错在
我前面说过的：数字会说话，但没说出完整的话。
首先，EPA 的几个污染物质的变化曲线形状都是反对数曲线，为什么？答案很简单：70
年代刚开始抓空气污染，所以前面几年改善速度很快，后面越来越困难，所以改善速
度变慢，所以奥巴马比小布什「好不了多少」，这是很正常的事情。这个道理不是很简
单？你怎么会没想到？
其次，如果你拿了这些图给环保专家看，他们说不定会这么告诉你：“要看 whole
picture！当你考虑汽车数目增加、发电量增加、平均飞行里程数增加、经济总量增加
..... 当你整体考虑这些因素后，你嘴里的「好不了多少」，其实是好了很多！“
所以，萝... 阅读全帖 |
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g*******r
发帖数: 33 | 19 LONDON, March 20: Good car must have good air? Yesterday CCTV weekly quality
report columns launch blockbuster reported: in random censorship Beijing
Benz C-Class, E-class cars, the BMW 3 Series cars, 5 cars, as well as the
Audi A6, Q5 damping chip samples detected with No. 70 asphalt, with a strong
carcinogenic effects, belonging to a carcinogen.
All the models for the show for people familiar with the ABB (Audi, BMW,
Mercedes-Benz), the program was broadcast triggered a strong reaction, about
... 阅读全帖 |
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s*m
发帖数: 1896 | 20 On Tuesday, Volkswagen reported that it understated the level of carbon
dioxide emissions of about 800,000 vehicles, including gasoline-powered
models. This is the first confirmation that some of Volkswagen's gasoline-
run vehicles do in fact exceed carbon dioxide emissions. |
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b*****d
发帖数: 61690 | 21 nature上专门讨论了。里面提了一个University of Central Florida教授，同时被Air force, NSF, DARPA资助被发
现。后来被NSF禁止两年内申请钱。
http://www.nature.com/news/duplicate-grant-case-puts-funders-un
he recent charges were brought against Craig Grimes, who until 2010 was a
professor of electrical engineering at Pennsylvania State University. Last
month, he pleaded guilty to charges that included accepting grants from the
Department of Energy (DOE) and the US National Science Foundation (NSF) to
fund the same research on solar conver... 阅读全帖 |
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P******e
发帖数: 129 | 22 contact me if you are qualified and interested.
Materials Scientist (PhD) Titanium Technologies in Delaware
Description
A company is currently seeking a Materials Scientist or Engineer to join its
Process Development Group in Wilmington, DE. As the world’s leading
producer of titanium dioxide pigment, the company encompasses 5 major
manufacturing sites, including 3 in the United States, 1 in Mexico, and 1 in
Taiwan, as well as product, process, and business units located in
Wilmington, DE and t... 阅读全帖 |
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B******1
发帖数: 9094 | 23 School homework for a 7th grader: An Essay about Scientific Research and Its
Impact
- - - - - - -
Pave the Way for the Future
A few years ago while watching a documentary by Al Gore, I first heard of
global warming. We were living in San Diego, CA at the time. As you can
imagine, the idea of Southern California disappearing due to a rising sea
level was absolutely horrible to me. Global warming has started popping up
in the news more and more often since then. The culprit might be the
consumpt... 阅读全帖 |
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d*****n
发帖数: 1956 | 24 这个我在用，
http://www.vitacost.com/Alba-Botanica-Sunblock-SPF-45-Pure-Lave
ACTIVE INGREDIENTS Homosalate 10% (sunscreen), Octocrylene 10% (sunscreen),
ethylhexyl methoxycinnamate 7.5% (sunscreen), ethlhexyl salicylate 5.0% (
sunscreen), titanium dioxide 2.0% (sunscreen).
含titanium dioxide，但也含Octocrylene 这些成分。 |
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e******t
发帖数: 3289 | 25 Tests reveal potentially toxic titanium dioxide in sunscreen and cosmetics
any 二氧化钛 的都不好
Today, Friends of the Earth U.S. and Australia revealed new testing results
from the Australian Government’s National Measurement Institute, which
found that many popular sunscreen and cosmetic products are using a
potentially hazardous form of a common ingredient -- anatase titanium
dioxide. Six of the eight products tested, including well-known brands such
as Nivea (Beiersdorf AG (BEIG.DE)), L'Oreal SA (OR... 阅读全帖 |
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e******t
发帖数: 3289 | 26 Banana Boat Kids Tear Free Sunblock Lotion, SPF 50 8 fl oz (236 ml)------
Titanium Dioxide (2.4%)
AVEENO BABY NATURAL PROTECTION SUNSCREEN BROAD SPECTRUM SPF 50 -------
Titanium Dioxide (6%)
Zinc Oxide (3%) |
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a********k
发帖数: 1 | 27 Currently we have a postdoc opening in the area of computational materials
science at Idaho National Laboratory (INL). This position is jointly funded
by the Fuels Modeling & Simulations Department and
the Center for Advanced Modeling & Simulation at INL. We would like to hire
a postdoc to use molecular dynamics simulations to study oxygen transport at
different types of interfaces in zirconium dioxide and the mechanical
behavior of uranium dioxide under different types of driving forces. The
id... 阅读全帖 |
|
f**********r
发帖数: 2158 | 28 2013年11月06日
黎远漪 报道
y****[email protected]
政府打算详细测量不同领域所释放的六种空气污染物质的浓度，以助当局制定政策继续
提升本地空气素质。
这六种空气污染物质是：直径在2.5微米以下的悬浮颗粒（PM2.5）、直径在10微米以下
的悬浮颗粒（PM10）、二氧化硫（sulphur dioxide）、一氧化碳（carbon monoxide）
、二氧化氮（nitrogen dioxide）与臭氧（ozone）。
国家环境局污化管制处副署长莎哈融（Rohaya Saharom）昨天出席由环境局和亚洲清洁
空气中心举办的洁净燃料和车辆论坛后，向记者透露上述信息。
莎哈融说：“我们希望了解各个领域，例如交通、能源生产领域的PM2.5空气污染物质
释放浓度，这将能助我们制定更详细的政策。我们目前正在提升我们的能力包括购置设
备、培训人才。”
莎哈融也透露，环境局已设立更多空气探测中心，通过扩大空气监控范围来获得更多数
据，以协助当局了解本地的空气素质。全岛已设14个空气素质监察站，全天候采集和分
析六种空气污染物质含量。
莎哈融也向本报透露，环境局目前正在进行各类科技... 阅读全帖 |
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y****e
发帖数: 226 | 29 我看了这个评价,说非常好,这种减肥药吃了会涨斑吗?
这个成份是:
proprietary bled 119.5mg: Bauhinia Purpurea L.(leaf and pod)Extract,Bacopa(
leaf)(Bacopa Monnieri) Exttact,1,3-Dimethylamyl-amine HCI,Cirsium
Oligophylium(plant)Extract, Rauwolscine HCI.
Caffeine 100mg
other ingredients: Modified starch, Gelatin, Vegetable stearate, silicon
dioxide,red 3,Blue 1,Red 40,Titanium Dioxide color.
这个药的成份有问题吗?会不会有副作用? |
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w***n
发帖数: 9040 | 30 嗯，应该是因为误差，因为脂肪和糖所占的百分比是从RQ测试值换算出来的，RQ测试值
每档的差距也就0.01-0.02左右，难免出现误差。
The respiratory quotient (or RQ or respiratory coefficient), is a unitless
number used in calculations of basal metabolic rate (BMR) when estimated
from carbon dioxide production. Such measurements, like measurements of
oxygen uptake, are forms of indirect calorimetry. It is measured using
Ganong's Respirometer.
Calculation
The respiratory quotient (RQ) is calculated from the ratio:
RQ = CO2 eliminated / O2 consumed
where the te... 阅读全帖 |
|
w***n
发帖数: 9040 | 31 嗯，应该是因为误差，因为脂肪和糖所占的百分比是从RQ测试值换算出来的，RQ测试值
每档的差距也就0.01-0.02左右，难免出现误差。
The respiratory quotient (or RQ or respiratory coefficient), is a unitless
number used in calculations of basal metabolic rate (BMR) when estimated
from carbon dioxide production. Such measurements, like measurements of
oxygen uptake, are forms of indirect calorimetry. It is measured using
Ganong's Respirometer.
Calculation
The respiratory quotient (RQ) is calculated from the ratio:
RQ = CO2 eliminated / O2 consumed
where the te... 阅读全帖 |
|
e*******e
发帖数: 9616 | 32 呼吸的pattern也很重要，肌肉大，的确容易疲劳
http://www.livestrong.com/article/361769-how-to-breathe-properl
How to Breathe Properly While Running & Playing Soccer
Last Updated: Feb 12, 2014 | By Van Thompson
How to Breathe Properly While Running & Playing Soccer
Focusing on your breathing when you run or play sports requires some effort.
Photo Credit Pixland/Pixland/Getty Images
Breathing is automatic, but physical stress can overwhelm your body, causing
you to adopt unhealthy breathing patterns. Particularly whe... 阅读全帖 |
|
S*******s
发帖数: 891 | 33 科普一下，SUNBLOCK是没有铅的，有效成分是TITANIUM DIOXIDE（钛白粉）或者
ZINC DIOXIDE。这两种成份都非常稳定，没有活性，比各类化学防晒（SUNSCREEN）要
安全、不易过敏。
130 |
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w*m
发帖数: 206 | 34 用了好几年的Physical UV Defense SPF 30，杜克skinceuticals的 全物理防晒
5% transparent zinc oxide 氧化锌 and 10% titanium dioxide二氧化钛
温和没什么刺激，缺点就是白色的，用了马上有粉底的效果，（皮肤黑的不建议用）
有点点厚重，不是稀薄清爽的，要用卸妆水洗才干净，有时夏天用了容易长豆
我想换了，大家有什么推荐？
最好是物理和化学防晒剂混合的，又容易卸的，单纯的化学防晒，我用了有点刺痛，皮肤敏感
有人用过，Ultimate UV Defense SPF 30，也是杜克的， 7% transparent zinc oxide
的吗?? 这个没有 titanium dioxide二氧化钛，不知道白不白
还有，neutrogena,, cetaphil, purpose ,,,,,,有人试过吗，，或者其他牌子的？？？
防晒很重要，无论刮风下雨都要用，大家来谈谈使用心得吧。。。 |
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u*********1
发帖数: 2518 | 35 Once a jolly pyruvate enters the matrix
Of a mitochondrion, so they say,
A decarboxylating, complex dehydrogenase
Converts it to acetyl coenzyme A
Waltz around the cycle,
Waltz around the cycle,
Waltz around the TCA cycle today,
A decarboxylating, complex dehydrogenase
Turns pyruvate to acetyl CoA
Oxaloacetate looking for a partner
Thinks "active acetate" looks OK,
Condensing enzyme arranging a merger
Makes a new citrate, and kicks out CoA.
Waltz around the cycle,
Waltz around the cycle,
Waltz a... 阅读全帖 |
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T******e
发帖数: 18290 | 36 多到APS仍然发了明显是支持人类活动导致变暖的声明？
“On the matter of global climate change, APS notes that virtually all
reputable scientists agree with the following observations: carbon dioxide
is increasing in the atmosphere due to human activity; carbon dioxide is an
excellent infrared absorber, and therefore, its increasing presence in the
atmosphere contributes to global warming; … On these matters, APS judges
the science to be quite clear. .. In light of the significant settled
aspects of the science, APS totall... 阅读全帖 |
|
p*e
发帖数: 6785 | 37 【 以下文字转载自 Automobile 讨论区 】
发信人: smm (test), 信区: Automobile
标 题: VW真是牛B大发了，汽油车的排放也撒谎了
发信站: BBS 未名空间站 (Tue Nov 3 19:53:11 2015, 美东)
On Tuesday, Volkswagen reported that it understated the level of carbon
dioxide emissions of about 800,000 vehicles, including gasoline-powered
models. This is the first confirmation that some of Volkswagen's gasoline-
run vehicles do in fact exceed carbon dioxide emissions. |
|
d********f
发帖数: 43471 | 38 别人小学毕业没毕业不是很清楚，你肯定没有，至少你在我班上毕不了业
http://www.ivhhn.org/index.php?option=com_content&view=article&id=84
Exposure Effects
Carbon dioxide (CO2) is a toxic gas at high concentration, as well as an
asphyxiant gas (due to reduction in oxygen). Irritation of the eyes, nose
and throat occurs only at high concentrations. The concentration thresholds
for health effects are outlined in the table.
Health effects of respiratory exposure to carbon dioxide
(Baxter, 2000; Faivre-Pierret and Le Guern, 1983 and re... 阅读全帖 |
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H********g
发帖数: 43926 | 39 1%对大多数人来说问题不是很大。尤其是如果在几百几千年里慢慢增加到1%，大部分人
可能就适应了。少数人当然是会不适应的。于是造成了新的内需。
Carbon dioxide content in fresh air (averaged between sea-level and 10 kPa
level, i.e., about 30 km (19 mi) altitude) varies between 0.036% (360 ppm)
and 0.041% (410 ppm), depending on the location.[93][clarification needed]
CO2 is an asphyxiant gas and not classified as toxic or harmful in
accordance with Globally Harmonized System of Classification and Labelling
of Chemicals standards of United Nations Economic Commission f... 阅读全帖 |
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d*********2
发帖数: 48111 | 40 地球的CO2是从3000多ppm逐渐降到现在工业时代前的280的。
还“等到了那个水平就来不及回去了。“
脱妈您真是杞人啊
there is evidence for very high CO2 volume concentrations between 200 and
150 million years ago of over 3,000 ppm, and between 600 and 400 million
years ago of over 6,000 ppm.[6] In more recent times, atmospheric CO2
concentration continued to fall after about 60 million years ago. About 34
million years ago, the time of the Eocene–Oligocene extinction event and
when the Antarctic ice sheet started to take its current form, CO2 is fou... 阅读全帖 |
|
c****t
发帖数: 19049 | 41 The region beneath Earth's surface may be crawling with diverse organisms,
and now researchers reveal the lives of just one group of bizarre beasties:
methane-spewing microbes that hide out in the cracks of hot undersea
volcanoes.
Called high-temperature methanogens, these microbes rely on the hydrogen and
carbon dioxide in their superheated deep-sea vents for growth, excreting
waste products like methane.
The possibility of past or present life on other worlds such as Mars, where
the rover Curi... 阅读全帖 |
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f****a
发帖数: 351 | 42 http://www.scotese.com/climate.htm
http://www.beacon.org/client/pdfs/8577_chron.pdf
Late Proterozoic ice ages
The Neoproterozoic era (1,000 to 542 million years ago), provides evidence
of at least two and possibly more major glaciations. The more recent of
these ice ages, encompassing the Marinoan & Varangian glacial maxima (about
560 to 650 million years ago), has been proposed as a snowball Earth event
with continuous sea ice reaching nearly to the equator. This is
significantly more severe th... 阅读全帖 |
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g***2
发帖数: 403 | 43 green
In author's opinion the ester exchange process has the following long points
(1) The two products (dimethyl carbonate and propylene glycol) produced with
the process are both in urgent market demand and therefore the input/output
effect of the process is better than the carbonylation process.
(2) Compared with the carbonylation process, the ester exchange process has
better environmental protection and can reduce the emission of carbon
dioxide carbon dioxide, chemical compound, CO2, a colo |
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u*********1
发帖数: 2518 | 44 Once a jolly pyruvate enters the matrix
Of a mitochondrion, so they say,
A decarboxylating, complex dehydrogenase
Converts it to acetyl coenzyme A
Waltz around the cycle,
Waltz around the cycle,
Waltz around the TCA cycle today,
A decarboxylating, complex dehydrogenase
Turns pyruvate to acetyl CoA
Oxaloacetate looking for a partner
Thinks "active acetate" looks OK,
Condensing enzyme arranging a merger
Makes a new citrate, and kicks out CoA.
Waltz around the cycle,
Waltz around the cycle,
Waltz a... 阅读全帖 |
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s********n
发帖数: 235 | 45 Title: PHOTOASSISTED CARBON-DIOXIDE REDUCTION ON AQUEOUS SUSPENSIONS OF
TITANIUM-DIOXIDE
Author(s): HALMANN M, KATZIR V, BORGARELLO E, et al.
Source: SOLAR ENERGY MATERIALS Volume: 10 Issue: 1 Pages: 85-91
Published: 1984
Title: PHOTOCATALYZED REDUCTION OF CO2 IN AQUEOUS TIO2 SUSPENSION MIXED WITH
COPPER-POWDER
Author(s): HIRANO K, INOUE K, YATSU T
Source: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY Volume: 64
Issue: 2 Pages: 255-258 Published: MAR 31 1992
many thanks!... 阅读全帖 |
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p*i
发帖数: 1481 | 46 Title: PHOTOASSISTED CARBON-DIOXIDE REDUCTION ON AQUEOUS SUSPENSIONS OF
TITANIUM-DIOXIDE
Author(s): HALMANN M, KATZIR V, BORGARELLO E, et al.
Source: SOLAR ENERGY MATERIALS Volume: 10 Issue: 1 Pages: 85-91
Published: 1984
http://www.sendspace.com/file/wrvgbj |
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l**********c
发帖数: 434 | 47 有可能是主要贡献吗？
A challenge in photodynamic therapy (PDT) cancer treatment is developing
novel methods of singlet oxygen generation using near infrared light.
Titanium
dioxide is a photocatalyst that generates reactive oxygen species (ROS), but
it requires ultraviolet light. Lead sulfide (PbS) quantum dots have a
narrow band
gap, allowing them to tune the absorbed wavelengths of the nanotubes to the
near infrared. To ensure singlet oxygen generation, the photoreactive NO
donor
S-nitroso-cysteine was ... 阅读全帖 |
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x****h
发帖数: 300 | 48 Armitage, J.W.; Cullis, C.F. Studies of the reaction between nitrogen
dioxide
and sulfur dioxide, Combust. Flame 1971, 16, 125-130
Wendt, J.O.L.; Sternling, C.V. Catalysis of SO2 oxidation by nitrogen oxides
,
Combust. Flame 1973, 21, 387-390
x******[email protected]
Thanks a lot |
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g*********n
发帖数: 808 | 49 GaAs vs. Si from wikipedia
Comparison with silicon
GaAs advantages
Some electronic properties of gallium arsenide are superior to those of
silicon. It has a higher saturated electron velocity and higher electron
mobility, allowing gallium arsenide transistors to function at frequencies
in excess of 250 GHz. Unlike silicon junctions, GaAs devices are relatively
insensitive to heat owing to their wider bandgap. Also, GaAs devices tend to
have less noise than silicon devices, especially at high fre... 阅读全帖 |
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