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| 1 | Explicit diagnosis of the local ozone production rate and the ozone-NOx-VOC sensitivities显示文摘In the troposphere, ozone is a harmful gas compound to both human health and vegetation. Ozone is produced from the reaction of NO_x(@NO + NO_2) and VOCs(volatile organic compounds) with light. Due to the highly nonlinear relationships between ozone and its precursors, proper ozone mitigation relies on the knowledge of chemical mechanisms. In this study, an observation-based method is used to simulate ozone formation and elucidate its controlling factors for a rural site on the North China Plain. The instantaneous ozone production rate is calculated utilizing a box model using the dataset obtained from the Wangdu campaign. First, the model was operated in a time-dependent mode to calculate the ozone production rate at each time stamp. The calculated ozone formation rate showed a diurnal average maximum value of 17 ppbv/h(1-h diurnal averaged). The contribution of individual peroxy radicals to ozone production was analyzed. In addition, the functional dependence of calculated P(O_3) reveals that ozone production was in a NO_x-limited regime during the campaign. Furthermore, the missing peroxy radical source will further extend NO_x-limited conditions to earlier in the day, making NO_xlimitation dominate more of a day than the current chemical model predicts. Finally, a multiple scenarios mode,also known as EKMA(empirical kinetic modeling approach), was used to simulate the response of P(O_3) to the imaginary change in precursor concentrations. We found that ozone production was in the NO_x-limited region. However, the use of NO_2 measured by the molybdenum converter and/or the absence of a peroxy radical source in the current chemical model could over-emphasize the VOC-limited effect on ozone production. | Zhaofeng Tan Keding Lu Huabin Dong Min Hu Xin Li Yuhan Liu Sihua Lu Min Shao Rong Su Haichao Wang Yusheng Wu Andreas Wahner Yuanhang Zhang | 2018 | Science Bulletin2018，63，16： | 25 |
| 2 | Carbonyl emissions from heavy-duty diesel vehicle exhaust in China and the contribution to ozone formation potential显示文摘Fifteen heavy-duty diesel vehicles were tested on chassis dynamometer by using typical heavy duty driving cycle and fuel economy cycle. The air from the exhaust was sampled by 2,4-dinitrophenyhydrazine cartridge and 23 carbonyl compounds were analyzed by high performance liquid chromatography. The average emission factor of carbonyls was 97.2 mg/km, higher than that of light-duty diesel vehicles and gasoline-powered vehicles. Formaldehyde, acetaldehyde, acetone and propionaldehyde were the species with the highest emission factors. Main influencing factors for carbonyl emissions were vehicle type, average speed and regulated emission standard, and the impact of vehicle loading was not evident in this study. National emission of carbonyls from diesel vehicles exhaust was calculated for China, 2011, based on both vehicle miles traveled and fuel consumption. Carbonyl emission of diesel vehicle was estimated to be 45.8 Gg, and was comparable to gasolinepowered vehicles(58.4 Gg). The emissions of formaldehyde, acetaldehyde and acetone were 12.6, 6.9, 3.8 Gg, respectively. The ozone formation potential of carbonyls from diesel vehicles exhaust was 537 mg O3 /km, higher than 497 mg O3 /km of none-methane hydrocarbons emitted from diesel vehicles. | Dong Dong Min Shao Yue Li Sihua Lu Yanjun Wang Zhe Ji Dagang Tang | 2014 | Journal of Environmental Sciences2014，26，1： | 20 |
| 3 | Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue briquettes显示文摘Experiments were performed to measure the emission factors (EFs) of gaseous carbonaceous species, such as CO2, CO, CH4, and non-methane volatile organic compounds (NMVOCs), from the combustion of five types of coal of varying organic maturity and two types of biomass briquettes under residential burning conditions. Samples were collected in stainless steel canisters and 2,4- dinitrophenylhydrazine (DNPH) cartridges and were analyzed by GC FID/MS and HPLC, respectively. The EFs from crop residue briquette burning were generally higher than those from coals, with the exception of CO2. The dominant NMVOC species identified in coal smoke were carbonyls (41.7%), followed by C2 unsaturated hydrocarbons (29.1%) and aromatics (12.1%), while C2 unsaturated hydrocarbons were the dominant species (68.9%) emitted from the combustion of crop residue briquettes, followed by aromatics (14.4%). A comparison of burning normal crop residues in stoves and the open field indicated that briquettes emitted a larger proportion of ethene and acetylene. Both combustion efficiency and coal organic maturity had a significant impact on NMVOC EFs from burning coal: NMVOC emissions increased with increasing coal organic maturity but decreased as the combustion efficiency improved. Emissions from the combustion of crop residue briquettes from stoves occurred mainly during the smoldering process, with low combustion efficiency. Therefore, an improved stove design to allow higher combustion efficiency would be beneficial for reducing emissions of carbonaceous air pollutants. | Qin WANG Chunmei GENG Sihua LU Wentai CHEN Min SHAO | 2013 | Frontiers of Environmental Science & Engineering2013，7，1： | 17 |
| 4 | Reactivity of ambient volatile organic compounds(VOCs) in summer of 2004 in Beijing显示文摘周围的不稳定的有机化合物(VOC ) 在 2004 的夏天在北京在六个地点被取样并且由 GCMS 分析了。73 的化学反应性确定了 VOC 种类被评估由哦损失率(LOH ) 和臭氧形成潜力(OFP ) 。顶 15 活性组分,主要链烯和 aromatics,被这二个方法识别,并且占了 VOC 的超过 70% 全部的反应。在城市的区域,异戌二烯是大多数活性组分以哦损失率,贡献 11.4% 到 VOC 的 LOH。当时甲苯,为 9.4% OFP 的财务,看起来在光化过程有一个长期的角色。Tongzhou 地点被本地化学工业显然影响,但是另外的五个地点显示出主要车辆的排出物影响的典型城市的特征。 | Shan Huang Min Shao Sihua Lu Ying Liu | 2008 | Chinese Chemical Letters2008，19，5： | 14 |
| 5 | Screening the emission sources of volatile organic compounds (VOCs) in China by multi-effects evaluation显示文摘 | He NIU Ziwei MO Min SHAO Sihua LU ShaodongXIE | 2016 | Frontiers of Environmental Science & Engineering2016，10，5： | 11 |
| 6 | Investigation of carbonyl compound sources at a rural site in the Yangtze River Delta region of China显示文摘Carbonyl compounds are important intermediates in atmospheric photochemistry, but their primary sources are still not understood well. In this work, carbonyls, hydrocarbons,and alkyl nitrates were continuously measured during November 2011 at a rural site in the Yangtze River Delta region of China. Mixing ratios of carbonyls and hydrocarbons showed large fluctuations during the entire measurement. The average level for total measured volatile organic compounds during the pollution episode from 25 th to 27 th November, 2011 was 91.6 ppb, about 7 times the value for the clean period of 7th–8th, November, 2011. To preliminarily identify toluene sources at this site, the emission ratio of toluene to benzene(T/B) during the pollution episode was determined based on photochemical ages derived from the relationship of alkyl nitrates to their parent alkanes. The calculated T/B was5.8 ppb/ppb, significantly higher than the values of 0.2–1.7 ppb/ppb for vehicular exhaust and other combustion sources, indicating the dominant influence of industrial emissions on ambient toluene. The contributions of industrial sources to ambient carbonyls were then calculated using a multiple linear regression fit model that used toluene and alkyl nitrates as respective tracers for industrial emission and secondary production. During the pollution episode, 18.5%, 69.0%, and 52.9% of measured formaldehyde, acetaldehyde, and acetone were considered to be attributable to industrial emissions. The emission ratios relative to toluene for formaldehyde, acetaldehyde, and acetone were determined to be 0.10, 0.20 and0.40 ppb/ppb, respectively. More research on industrial carbonyl emission characteristics is needed to understand carbonyl sources better. | Ming Wang Wentai Chen Min Shao Sihua Lu Limin Zeng Min Hu | 2015 | Journal of Environmental Sciences2015，27，2： | 8 |
| 7 | Major reactive species of ambient volatile organic compounds (VOCs) and their sources in Beijing显示文摘Volatile organic compounds (VOCs) are important precursors of atmospheric chemical processes. As a whole mixture, the ambient VOCs show very strong chemical reactivity. Based on OH radical loss rates in the air, the chemical reactivity of VOCs in Beijing was calculated. The results revealed that alkenes, accounting for only about 15% in the mixing ratio of VOCs, provide nearly 75% of the reactivity of ambient VOCs and the C4 to C5 alkenes were the major reactive species among the alkenes. The study of emission characteristics of various VOCs sources indicated that these alkenes are mainly from vehicle exhaust and gasoline evaporation. The reduction of alkene species in these two sources will be effective in photochemical pollution control in Beijing. | SHAO Min FU Linlin LIU Ying LU Sihua ZHANG Yuanhang TANG Xiaoyan | 2005 | Science China Earth Sciences2005，48，z2： | 7 |
| 8 | Chemical speciation and anthropogenic sources of ambient volatile organic compounds (VOCs) during summer in Beijing, 2004显示文摘Volatile organic compounds(VOCs)were measured at six sites in Beijing in August,2004.Up to 148 VOC species,including C_(3) to C_(12) alkanes,C_(3) to C_(11) alkenes,C_(6) to C_(12) aromatics,and halogenated hydrocarbons,were quantified.Although the concentrations differed at the sites,the chemical compositions were similar,except for the Tongzhou site where aromatics were significantly high in the air.Based on the source profiles measured from previous studies,the source apportionment of ambient VOCs was preformed by deploying the chemical mass balance(CMB)model.The results show that urban VOCs are predominant from mobile source emissions,which contribute more than 50% of the VOCs(in mass concentrations)to ambient air at most sites.Other important sources are gasoline evaporation,painting,and solvents.The exception is at the Tongzhou site where vehicle exhaust,painting,and solvents have about equal contribution,around 35% of the ambient VOC concen-tration.As the receptor model is not valid for deriving the sources of reactive species,such as isoprene and 1,3-butadiene,other methodologies need to be further explored. | LU Sihua LIU Ying SHAO Min HUANG Shan | 2007 | Frontiers of Environmental Science & Engineering2007，1，2： | 3 |
| 9 | A Hybrid Approach to Maximize Lifetime in Connected Directional Sensor Networks with Adjustable Sensing Ranges显示文摘A directional sensor network consists of numerous small sensor nodes that have limited battery power and operate within a restricted sensing range angle. Coverage and connectivity, as two important issues,are widely studied in directional sensor networks. Different from conventional directional sensor nodes in previous studies, those in the present study could adjust their sensing ranges within a range of several values. This paper addresses the Connected adjusted-ranges directional cover(CARDC) problem. The purpose is to organize the directional sensor nodes into a group of connected covers, and assign activities to them, thereby maximizing the network lifetime. We propose a hybrid approach that combines column generation with a genetic algorithm to solve the CARDC problem. The genetic algorithm is utilized to settle the auxiliary problem of column generation, which has the ability to efficiently provide attractive columns for the master problem. Compared with pure integer linear programming formulations, the proposed genetic algorithm significantly improves the speed of column generation method, especially in large-scale networks. The effect variety of number of directions, number of power levels,and communication range on the network lifetime are also investigated. | LIU Shufen GAO Sihua HAN Lu | 2018 | Chinese Journal of Electronics2018，27，1： | 3 |
| 10 | Design,synthesis,and biological evaluation of Bcr-Abl PROTACs to overcome T315I mutation显示文摘Bcr-Abl threonine 315 to isoleucine 315(T315 I)gatekeeper mutation induced drug resistance remains an unmet clinical challenge for the treatment of chronic myeloid leukemia(CML).Chemical degradation of Bcr-AblT315 Iprotein has become a potential strategy to overcome drug resistance.Herein,we first described the design,synthesis,and evaluation of a new class of selective Bcr-AblT315 I proteolysis-targeting chimeric(PROTAC)degraders based on GZD824(reported as Bcr-AblT315 Iinhibitor by our group).One of the degrader 7 o with 6-member carbon chain linkage with pomalidomide exhibits the most potent degradation efficacy with DR of 69.89%and 94.23%at 100 and 300 nmol/L,respectively,and has an IC50 value of 26.8±9.7 nmol/L against Ba/F3T315 Icells.Further,7 o also displays substantial tumor regression against Ba/F3-Bcr-AblT315 Ixenograft model in vivo. | Liang Jiang Yuting Wang Qian Li Zhengchao Tu Sihua Zhu Sanfang Tu Zhang Zhang Ke Ding Xiaoyun Lu | 2021 | Acta Pharmaceutica Sinica B2021，11，5： | 2 |
| 11 | Volatile Organic Compound (VOC) measurements in the Pearl River Delta (PRD) region, China显示文摘 | Liu Ying Shao Min Lu Sihua Chang Chih-chung Wang Jia-Lin Chen Gao | 2008 | Atmospheric Chemistry and Physics2008，，119： | 2 |
| 12 | Source profiles of volatile organic compounds (VOCs) measured in China: Part I显示文摘 | Ying Liu Min Shao Linlin Fu Sihua Lu Limin Zeng Dagang Tang | 2008 | Atmospheric Environment2008，，25： | 2 |
| 13 | Source profiles of volatile organic compounds (VOCs) measured in China: Part I显示文摘 | Ying Liu Min Shao Linlin Fu Sihua Lu Limin Zeng Dagang Tang | 2008 | Atmospheric Environment2008，，25： | 2 |
| 14 | Thermo-Mechanical Analysis of Metal-Post-Interconnected-Parallel-Plate-Structure 显示文摘 | Sihua Wen Shatil Haque Carlos Suchicital Guo-Quan Lu | 1998 | Proceedings of VPEC Seminar1998，，： | 1 |
| 15 | Volatile Organic Compound (VOC) measurements in the Pearl River Delta (PRD) region, China显示文摘 | Liu Ying Shao Min Lu Sihua Chang Chih-chung Wang Jia-Lin Chen Gao | 2008 | Atmospheric Chemistry and Physics2008，，119： | 1 |
| 16 | Volatile organic compounds (VOCs) in urban air: How chemistry affects the interpretation of positive matrix factorization (PMF) analysis显示文摘 | Yuan Bin Shao Min Gouw Joost de Parrish David D Lu Sihua Wang Ming Zeng Limin Zhang Qian Song Yu Zhang Jianbo Hu Min | 2012 | Journal of Geophysical Research Atmospheres2012，，24： | 1 |
| 17 | Comparison of receptor models for source apportionment of volatile organic compounds in Beijing, China显示文摘 | Yu Song Wei Dai Min Shao Ying Liu Sihua Lu William Kuster Paul Goldan | 2007 | Environmental Pollution2007，，1： | 1 |
| 18 | Variations and sources of ambient formaldehyde for the 2008 Beijing Olympic games显示文摘 | Yang Li Min Shao Sihua Lu Chih-Chung Chang Purnendu K. Dasgupta | 2010 | Atmospheric Environment2010，，21： | 1 |
| 19 | Volatile organic com- pound (VOC) measurements in the Pearl River Delta (PRD) region,China显示文摘 | LIU Ying SHAO Min LU Sihua | 2008 | Atmospherie Chemistry and Physics2008，8，6： | 1 |
| 20 | Variations and sources ofambient formaldehyde for the 2008 Beijing Olympic Games 显示文摘 | LI Yang SHAO Min LU Sihua | 2010 | Atmospheric Environment2010，44，： | 1 |
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