发布日期：2024-10-12 01:07 点击次数：161
庭院里的女人庭院里的女人
IF HOLLOW PARTICLES ARE COMMON in the ATMOSPHERE
北京沙尘--电镜的不雅察 BEIJING SAND DUST -SEM OBSERVATION Roger J. CHENG, ASRC SUNY UALBANY
纽约州立大学，大气科学研究中心 郑均华研究员 的科研项目
_english/2010-03/22/content_19658807.htm -ATMOSPHERIC PARTICLES.htm ?q=BEIJING+SAND+DUST&start=174&um ?q=+BEIJING+SAND+DUST
MICRO-WORLD in OUR ENVIRONMENT.htm
CONNECTION-EXCHANGE PROGRAM.htm
北京沙尘--电镜的不雅察
BEIJING SAND DUST -SEM OBSERVATION
SAND DUST (left) from GOBI DESERT-? and FLYASH(right) from POWER PLANT ?
-ATMOSPHERIC PARTICLES.htm
-CLIMATE CHANGE.htm
SAND DUST STORM in USA-JULY 5, 2011
****大气中的微观世界 系列**** 沙尘暴-USA
The biggest dust storm in living memory rolls into Phoenix on July 5, 2011, reducing visibility to zero. Desert thunderstorms kicked up the mile-high wall of dust and sand.---------- - Photograph by Daniel Bryant The tempest of historic proportions rolled through the city as residents scrambled for cover and thousands were left without power in the scorching desert heat. Read more: -2190397/Incredible-National-Geographic-pictures-extreme-weather-battering-U-S.html#ixzz2QwBpaSbyCHARACTERIZATION of DIFFERENCES between OIL-FIRED and COAL-FIRED POWER PLANT EMISSIONS
****大气中的微不雅世界 系列--4.海洋****
海洋中云凝结核（CCN）的显微不雅察，测试探求陈诉
of MARINE AEROSOL-ROGER J CHENG ASRC UALBANY SUNY USA.htm
OBSERVATION of MARINE AEROSOL-ROGER J CHENG ASRC UALBANY SUNY USA.htm
1，附带硫化物（CaSO/4,MgSO/4）的气溶胶的测定。 • 2，海盐颗粒空腹球体的发现。 • 3，氯化物（MgCl/2和KCl）在凝结核名义的说明。
纽约州立大学，大气科学探求中心郑均华探求员主握的科研情势
from the EVAPORATION of DROPS of SEAWATER
Roger J. Cheng, Duncan C. Blanchard and Ramon J. Ciprianoa
Atmospheric Sciences Research Center State University of New York at Albany Received 12 December 1986; accepted 31 July 1987.Abstract
Some non-volatile materials dissolved in water drops will, upon evaporation of the water, produce a hollow shell of the material. Though known for years in the chemical engineering literature, this fact was not appreciated by those working with the marine sea-salt aerosol. Our laboratory experiments show that a majority of seawater drops in free fall in air with a relative humidity less than about 60% evaporate, become salt-saturated, and change phase to produce hollow sea-salt particles. Some hollow salt particles have been found in marine air, though further investigation is required to show the extent of this phenomenon. Expressions have been derived from which both the size of the original drop of seawater and its salt supersaturation at the time of phase change can be calculated from the inner and outer radii of the salt shell. If hollow particles are common in the marine aerosol, then instruments that measure particle size cannot be used to obtain particle mass.
Résumé
Certaines substances non volatiles dissoutes dans les gouttes d'eau produisent, à l'évaporation de l'eau, des coquilles creuses. Ce processus est bien connu en génie chimique, et pourtant il n'en est pas tenu compte dans les travaux sur les aérosols salins océaniques. Nos expériences de laboratoire montrent que lorsque des gouttes du de mer tombent en chute libre dans de l'air à moins de 60% d'humidité relative, la plupart d'entre elles arrivent à saturation et changent de phase pour produire des particules salines creuses. On a d'ailleurs trouvé des particules creuses de sel dans de l'air marin, mais d'autres recherches sont nécessaires pour connaître l'étendue du phénomène. On présente des relations qui donnent la dimension de la goutte originale d'eau de mer, ainsi que la sursaturation au changement de phase, à partir des rayons intérieurs et extérieurs de la coquille de sel. S'il est prouvé que les particules creuses sont courantes dans l'aérosol marin, on ne pourra pas utiliser les appareils qui mesurent les dimensions des particules pour évaluer la masse de l'aérosol.
Atmospheric Research
Volume 22, Issue 1, Pages 15-25 June 1988,
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***CITATION***
by DR. H.K. PRUPPACHER'S TEAM of GERMANY
A NEW MECHANISM for the GENERATION of
HIGH SULFATE ENRICHED AEROSOLS in the MARINE ATMOSPHERE
(CaSO/4, MgSO/4---NOT DMS)
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Roger J. CHENG:
ASRC SUNY UALBANY
****大气中的微观世界 系列****
纽约州立大学，大气科学研究中心 郑均华研究员主持的科研项目
ROGER J. CHENG, ASRC SUNY UALBANY
CATALYST PLUGGING in VEHICLES
NATURE JOURNAL-1982-in CHINESE
《当然杂志》 1982年01期 汽车废气可能影响天气吗? 王明康 郑均华 【选录】：正跟着工业出产和交通运输的束缚发展,每天从工场和汽车排出的多半废气不但影响东说念主体的健康,况且, 从气候角度来看,还可能影响天气。 以汽车废气为例,汽油中含有铅,从废气中排出后就有可能和大气中的碘相联结,形成碘化铅,它和碘化银相似, 在大气科学顶用来产生多半东说念主工冰晶,恰是这种次第不错弥补当然云体中冰晶的不及……..
汽车废气 ,含有铅的颗粒物 及对东说念主体的健康影响 纽约州立大学，大气科学探求中心 郑均华探求员主握的科研情势 2010年11月05日09:14 起原：《法制日报》 初度坐上世界汽车产销第一大国位置的中国正在饱受严重的汽车尾气浑浊之苦。 环保部本日初度发布的《中国活泼车浑浊防治年报(2010年度)》(以下简称“年报”)深刻,2009年我国初度成为世界汽车产销第一大国,汽车产销量的飙升也带来了严重的活泼车浑浊问题。“年报”以为,我国活泼车浑浊日益严重,活泼车尾气排放已成为我国大中城市空气浑浊的主要起原。其中,世界113个环调整心城市中三分之一的城市空气质料不达标。 为浪漫日益严重的活泼车浑浊,环保部暗意,将加强对在用活泼车的环境监管。 ENVRONMENTAL PROBLEMS IN CHINA: POLLUTION, MERCURY, LEAD POISONING, CANCER VILLAGES, AND HEALTH PROBLEMS ENVIRONMENTAL PROBLEMS IN CHINA Lead Poisoning in China
China is the world’s leading producer and consumer of lead. There have been numerous cases of mass lead poisoning---including reports of severe lead poisoning in Hunan, Henan, Yunnan and Shanxii Provinces---along with instances in which local governments tried to cover them up. Sharon Lafraniere wrote in the New York Times in June 2011, “In the past two and a half years, thousands of workers, villagers and children in at least 9 of mainland China’s 31 province-level regions have been found to be suffering from toxic levels of lead exposure...The cases underscore a pattern of government neglect seen in industry after industry as China strives for headlong growth with only embryonic safeguards.” [Source: Sharon Lafraniere, New York Times, June 15, 2011]
A report by Human Rights Watch released in June 2011 states that some local officials have reacted to mass poisonings by arbitrarily limiting lead testing, withholding and possibly manipulating test results, denying proper treatment to children and adults and trying to silence parents and activists. “What we are trying to underscore is how little has been done to address the massive impact of lead pollution in China,” Joe Amon, the organization’s health and human rights director, told the New York Times. “It really has affected a whole generation of kids.” [Ibid]
“In more developed nations, where lead pollution has been tightly regulated for decades, a pattern of lead poisoning like China’s would most likely be deemed a public-health emergency. Lead poisoning can damage the nervous, muscular and reproductive systems. High levels can damage the brain, kidney, liver, nerves and stomach and, in extreme cases, cause death. Children are particularly susceptible because they absorb lead more easily than adults.” “No blood lead level has been found to be safe for a child,” Dr. Mary Jean Brown, chief of the lead poisoning prevention branch of the Centers for Disease Control and Prevention, told the New York Times.
“Chasing the political dividends of economic development, local officials regularly overlook environmental contamination, worker safety and dangers to public health until forced to confront them. The few published studies point to a huge problem. One 2001 research paper called lead poisoning one of the most common pediatric health problems in China. A 2006 review of existing data suggested that one-third of Chinese children suffer from elevated blood lead levels.“
?itemid=394 汽车尾气浑浊_百度文库 汽车诚然是21世纪最迫切的交通器具，但它有很多缺点。 汽车浑浊是由汽车排放的废气酿成的环境浑浊。不错说，汽车是一个流动的浑浊源。活着界列国，汽车浑浊早已不是新话题。20世纪40年代以来，光化学烟雾事件在好意思国洛杉矶、日本东京 汽车排气管排出内燃机废气 等城市屡次发生，酿成不少东说念主员伤一火和强大的经济逝世！ 干与21世纪，汽车浑浊日益成为寰球性问题。跟着汽车数目越来越多、使用规模越来越广，它对世界环境的负面效应也越来越大，尤其是危害城市环境，激发呼吸系统疾病，酿成地表空气臭氧含量过高，加剧城市热岛效应，使城市环境转向恶化。 含铅物资 汽车尾气排放的含铅颗粒大部分来自内燃机的废气排放。四乙铅是看成抗爆剂加进汽油中的，一般汽油的含铅量在0.08%~0.13%之间，四乙铅废弃青年景氧化铅排出。铅主要作用于神经系统、造血系统、消化系统和肝、肾等器官。铅能扼制血红卵白的合成代谢流程，还能径直作用于熟悉的红细胞。经由呼吸系统干与东说念主体的铅粒，颗粒较大者能吸附于呼吸说念的粘液上，混于痰中而吐出；颗粒较小者，便千里积于肺的深部组织，它们险些全被领受。铅在东说念主体内各器官中积攒到一定进程，会对东说念主的腹黑、肺等酿成毁伤，使东说念主贫血，步履呆傻，才气下落，留意力不聚首，严重的还可能导致不育症以及高血压。笔据干与躯壳的状貌，不错有高达60%的摄入总铅量耐久留在东说念主体内，成年东说念主血液中混入0.8mg以上称为铅中毒。 汽车尾气浑浊对环境酿成的危害 发布时分：2013-7-8 11:30:20 点击次数：71 汽车尾气浑浊是汽车排放的废气酿成的环境浑浊。不错说，汽车是一个流动的浑浊源。当代城市汽车指不胜屈，像蚂蚁、蝗虫相通挤满三街六市，其尾气排放量是惊东说念主的，是城市一大公害，亦然东说念主体致癌的诱因。我的一位一又友很有感叹地写了一首诗态状汽车尾气和噪声的危害。诗的落款叫《城市汽车链》，诗是这么写的：城市汽车成链堆，浊浊尾气漫街边。老媪临街顿晕厥，震耳噪声刺情愫。 汽车尾气、烟尘经太阳照耀而挥发出致癌物的柏油马路等，王人是城市空气浑浊的起原。出现交通拥挤时情况更糟，这时汽车行驶逐渐，尾气废弃不充分所产生的致癌物资，比汽车畅达行驶时更多。而在大城市，说念路两侧多为高堂大厦空气中的这些致癌物得不到实时散漫。从防癌的角度讲，刮大风反倒有益于有毒物资的淹没。 _pM6584116a8dff9f09c0695bd6e6c75f9263cee4611397de818efbe0eb45338274704
_pM6584116a8dff9f09c0695bd6e6c75f9263cee4611397de818efbe0eb45338274704f491fac
261c964f1aeb6ebf006bf5.htm
中国汽车尾气浑浊严重 大气浑浊问题平日发生 2010年11月05日09:14 起原：《法制日报》 初度坐上世界汽车产销第一大国位置的中国正在饱受严重的汽车尾气浑浊之苦。 环保部本日初度发布的《中国活泼车浑浊防治年报(2010年度)》(以下简称“年报”)深刻,2009年我国初度成为世界汽车产销第一大国,汽车产销量的飙升也带来了严重的活泼车浑浊问题。“年报”以为,我国活泼车浑浊日益严重,活泼车尾气排放已成为我国大中城市空气浑浊的主要起原。其中,世界113个环调整心城市中三分之一的城市空气质料不达标。 为浪漫日益严重的活泼车浑浊,环保部暗意,将加强对在用活泼车的环境监管。
References:
1, Cheng, R.J.and A.M. Pitaniello "Characterization and Identification of Asbestos". Proceedings of AGGIH Symposium on Asbestos Identification and Measurement. OSRA Training Center, Des Plaines, Ill. USA, 1979
2, Cheng,R.J. "The Identification of Asbestos by Electron Microscopy", Proceedings of the Air Pollution Control Association, 73rd Annual Meeting, Montreal, Canada, 1980
3, Hershey, D.C and R.J. Cheng "Identifying Asbestos in Building Material" Proceedings of Pittsburgh Conference & Exposition on Analytical Chemistry and Applied Spectroscopy, New Orleans, LA.USA, 1988
4, Cheng, R.J. "Industrially Generated Asbestos Fibers: Characterization and Environmental Risk Assessment". Workshop on Indoor air Pollution and Environmental Health, Sponsored by The Environmental Protection Administration, Taipei, Taiwan, China, 1989
5, Reports on Asbestos by: A, American Lung Association B, Consumer Product Safety Commission C, United States Environmental Protection Agency
DIALOGUE- JIAO-LIU 4/1986 ROGER J CHENG, ASRC SUNY UALBANY
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