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Catalytic ozonation of volatile organic compounds(ethyl acetate)at normal temperature

Chinese Journal of Chemical Engineering 2021年第4期34卷 159-167页

作者： Jiahao Cui Shejiang Liu Hua Xue Xianqin Wang Ziquan Hao Rui Liu Wei Shang Dan Zhao Hui Ding School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Tianjin Key Laboratory of Indoor Air Environmental Quality Control School of Environmental Science and EngineeringTianjin UniversityTianjin 300072China

Catalytic treatments of VOCs at normal temperature can greatly reduce the cost and temperature of processing,and improve the safety factor in line with the requirements of green *** carbon fiber(ACF)was pretreated with 10%H_(2)SO_(4)by single factor optimization to increase specific surface area and pore volume *** catalytic ozonation performance of ACF loaded with Au,Ag,Pt and Pd noble metals on ethyl acetate was investigated and Pd/ACF was selected as the optimal catalyst which had certain *** is uniformly distributed on the surface of ACF,and Palladium mainly exists in the form of Pd0 with a amount of Pd+*** specific surface area of the catalysts gradually decreases as the loading *** activation energy of ethyl acetate calculated by Arrhenius equation is 113 kJ mol *** 1%Pd loading and the concentration ratio of ozone to ethyl acetate is 3:1,catalytic ozonation performance is maximized and the conversion rate of ethyl acetate reached to 60%in 3050℃Cat 15,00030,000 h^1.

关键词： Catalytic ozonation normal temperature Activated carbon fiber Ethyl acetate Noble metal catalysts

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Batroxobin plus hypothermia for protection of cerebral ischemia/reperfusion injury models in gerbils

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Neural Regeneration Research 2006年第5期1卷 405-407页

作者： Lin Zhang Pixing Zhang Yinming Zeng Qun Chen Department of Anesthesiology Affiliated Hospital of Qingdao University Medicat CollegeQingdao 266003 Shandong Province China First Clinical College China Medical University Shenyang 110001 Liaoning Province China Department of Anesthesiology Eighth People＇s Hospital of Qingdao City Qingdao 266000 Shandong Province China Jiangsu Key Lab of Anesthesiology Xuzhou 221002 Jiangsu Province China

BACKGROUND： Hypothermia plays a protective role in cerebral ischemialreperfusion injury. Dose combination with batroxobin, an active drug for treating cerebrovascular disease, will enhance its protection？ OBJECTIVE ： To explore the effects of hypothermia, batroxobin, hypotherrnia combined with batroxobin on complete cerebral ischemia/reperfusion injury in gerbils. DESIGN ： A randomized block comparison observation.SETTING ： Jiangsu Key Lab of Anesthesiology. MATERIALS ： Experimental animal： Sixty Mongolia gerbils weighing 50-80 g, male or female, were provided by the Animals Center of Xuzhou Medical College. Drugs and agents： Batroxobin was provided by Dongling Pharmaceutical Industry Organization （Japan）. Superoxide dismutase （SOD） and malondiadehyde （MDA） kits were offered by Nanjing Jiancheng Bioengineedng Institute. Other reagents were all import or national analytical pure grade. HITACHI R22A refrigerated high-speed centrifuge, and HARRIS ultra-hypotherrnia refrigerator were used. METHODS ： The experiments were completed in Jiangsu Key Lab of Anesthesiology from May 2004 to January 2005. ① The animals were divided into 6 groups by random member table method： sham-operated group （n =6）, ischemia control group （n =6）, norrnothermia group （n =12）, hypothermia group （n =12）, batroxobin group （n =12） and hypothermia＋batroxobin group （n =12）. Gerbil rats were abdominally anesthetized with sodium pentobarbital. The neck skin was incised to separate bilateral common carotid arteries. Complete cerebral ischemia models were established by occluding bilateral common carotid arteries with artery clamp for 10 minutes, then the clamp was loosened to perfuse the arteries, Iso-electric level of brain electric wave showed the models were established successfully. The gerbils in the batroxobin group and hypotherrnia＋batroxobin group were abdominally injected with batroxobin （8 BU/kg） while reperfusion, and isovolumetric saline was administered to the gerbils in the oth

关键词： cerebral ischemia SOD activity carotid arteries cerebrovascular disease common carotid artery protective effects normal temperature measurement data brain protection

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Meridional Distributions of Historical Zonal Averages and Their Use to Quantify the Global and Spheroidal Mean Near-Surface temperature of the Terrestrial Atmosphere

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Natural Science 2020年第3期12卷 80-124页

作者： Gerhard Kramm Martina Berger Ralph Dlugi Nicole Molders Engineering Meteorology Consulting FairbanksAKUSA Arbeitsgruppe Atmospharische Prozesse(AGAP) MunichGermany Department of Atmospheric Sciences and Geophysical Institute University of Alaska FairbanksFairbanksAKUSA

The zonal averages of temperature (the so-called normal temperatures) for numerous parallels of latitude published between 1852 and 1913 by Dove, Forbes, Ferrel, Spitaler, Batchelder, Arrhenius, von Bezold, Hopfner, von Hann, and Börnstein were used to quantify the global (spherical) and spheroidal mean near-surface temperature of the terrestrial atmosphere. Only the datasets of Dove and Forbes published in the 1850s provided global averages below 〈T〉=14°C, mainly due to the poor coverage of the Southern Hemisphere by observations during that time. The global averages derived from the distributions of normal temperatures published between 1877 and 1913 ranged from 〈T〉=14.0°C (Batchelder) to 〈T〉=15.1°C (Ferrel). The differences between the global and the spheroidal mean near-surface air temperature are marginal. To examine the uncertainty due to interannual variability and different years considered in the historic zonal mean temperature distributions, the historical normal temperatures were perturbed within ±2σ to obtain ensembles of 50 realizations for each dataset. Numerical integrations of the perturbed distributions indicate uncertainties in the global averages in the range of ±0.3°C to ±0.6°C and depended on the number of available normal temperatures. Compared to our results, the global mean temperature of 〈T〉=15.0°C published by von Hann in 1897 and von Bezold in 1901 and 1906 is notably too high, while 〈T〉=14.4°C published by von Hann in 1908 seems to be more adequate within the range of uncertainty. The HadCRUT4 record provided 〈T〉≌?13.7°C for 1851-1880 and 〈T〉=13.6°C for 1881-1910. The Berkeley record provided 〈T〉=13.6°C and 〈T〉≌?13.5°C for these periods, respectively. The NASA GISS record yielded 〈T〉=13.6°C for 1881-1910 as well. These results are notably lower than those based on the historic zonal means. For 1991-2018, the HadCRUT4, Berkeley, and NASA GISS records provided 〈T〉=14.4°C, 〈T〉=14.5°C, and 〈T〉=14.5°C, respectively. The comparison of the

关键词： Global Mean temperature Spheroidal Mean temperature Climatological Mean Values for the Parallels of Latitude Zonal Averages normal temperature temperature Anomaly Isothermal Charts Solar Climate

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