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City level CO_(2) and local air pollutants co-control performance evaluation: A case study of 113 key envir on mental protection cities in China

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Advances in Climate Change Research 2022年第1期13卷 118-130页

作者： Qing-Yong ZHANG Bo-Feng CAI Mu-Dan wang jun-xia wang You-Kai XING Guang-xia DONG Zhen ZHANG xian-Qiang MAO School of Environment Beijing Normal University'Beijing 100875China Center for Climate Change and Environmental Policy Chinese Academy of Environmental PlanningBeijing 100012China China National Environmental Monitoring Centre Beijing 100012China Ministry of Transport Transport Planning and Research InstituteLaboratory of Transport Pollution Control and Monitoring TechnologyBeijing 100028China

‘Co-control',or synergistically reducing CO_(2)and local air polluta nt emissions,is an important strategy for cities to achieve'low carb on'and'blue sky'***,there were few studies to evaluate and compare the level of co-control of CO_(2) and local air pollutants in cities *** present study proposed qualitative and quantitative methods to evaluate the level of co-control of CO_(2)and three local air pollutant(SO_(2).NOX,and particulate matter PM)emissions in key environmental protection cities in China over two periods(2012-2015 and 2015-2018).Statistical analysis found that,though three local air pollutant emissions positively correlated with CO_(2) emission,no significantly positive correlation was found between local air pollutants emission reductions and CO_(2) emission reductions,indicating that co-control effects were poor in *** using the co-control effect coordinate system,qualitative evaluation showed that less than half of the sample cities could achieve co-control of the total amount of CO_(2) and local air *** employing the indicator of emission reduction equivalence(EReq),quantitative evaluation showed that the co-control level of the sample cities improved in 2015-2018 compared with *** regression analysis showed that,reducing coal consumption and economic development significantly enhanced the co-control performance of the observed *** present case study proved that the proposed methods for evaluation and comparison of the city co-control performance works well,and can be used in other countries and regions to promote global cities racing to carbon and local air pollutants co-control.

关键词： Co-control CO_(2)emission reduction Local air pollutant emission reduction:Performance evaluation Key environmental protection cities

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Magnetic-activated cell sorting of nonapoptotic spermatozoa with a high DNA fragmentation index improves the live birth rate and decreases transfer cycles of IVF/ICSI

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Asian Journal of Andrology 2022年第4期24卷 367-372页

作者： Jie Mei Lin-jun Chen Xin-Xin Zhu Wen Yu Qing-Qiang Gao Hai-xiang Sun Li-jun Ding jun-xia wang Center for Reproductive Medicine Department of Obstetrics and GynecologyNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008China Center for Molecular Reproductive Medicine Nanjing UniversityNanjing 210008China Department of Andrology Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008China Clinical Center for Stem Cell Research The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210008China

The present study aimed to evaluate the clinical outcomes of magnetic-activated cell sorting(MACS)in sperm preparation for male subjects with a sperm DNA fragmentation index(DFI)≥30%.A total of 86 patients who had undergone their first long-term long protocol were *** protocol involved in vitro fertilization(IVF)and intracytoplasmic sperm injection(ICSI)cycles,and the patients were divided into the MACS or control *** MACS group included sperm samples analyzed with MACS that were combined with density gradient centrifugation(DGC)and the swim-up(SU)technique(n=39),and the control group included sperm samples prepared using standard techniques(DGC and SU;n=41).No differences were noted with regard to basic clinical characteristics,number of oocytes retrieved,normal fertilization rate,cleavage rate,or transplantable embryo rate between the two groups in IVF/*** addition,the clinical pregnancy and implantation rates of the first embryo transfer cycles indicated no significant differences between the two ***,there was a tendency to improve the live birth rate(LBR)of the first embryo transfer cycle(63.2%vs 53.9%)and the cumulative LBR(79.5%vs 70.7%)in the MACS group compared with the control ***,the number of transferred embryos(mean±standard deviation[s.d.]:1.7±0.7 vs 2.3±1.6)and the transfer number of each retrieved cycle(mean±s.d.:1.2±0.5 vs 1.6±0.8)were significantly lower in the MACS group than those in the control ***,the selection of nonapoptotic spermatozoa by MACS for higher sperm DFI could improve assisted reproductive clinical outcomes.

关键词： cumulative live birth rate fertility rate intracytoplasmic sperm injection sperm DNA fragmentation index sperm DNA integrity

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Effect of speed humps on instantaneous traffic emissions in a microscopic model with limited deceleration capacity

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Chinese Physics B 2024年第6期33卷 413-420页

作者：胡宇晨李启朗刘军王君霞汪秉宏 School of Mathematics and Physics Anhui Jianzhu UniversityHefei 230601China School of Civil Engineering and Transportation Northeast Forestry UniversityHarbin 150040China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China

As a common transportation facility, speed humps can control the speed of vehicles on special road sections to reduce traffic risks. At the same time, they also cause instantaneous traffic emissions. Based on the classic instantaneous traffic emission model and the limited deceleration capacity microscopic traffic flow model with slow-to-start rules, this paper has investigated the impact of speed humps on traffic flow and the instantaneous emissions of vehicle pollutants in a single lane situation. The numerical simulation results have shown that speed humps have significant effects on traffic flow and traffic emissions. In a free-flow region, the increase of speed humps leads to the continuous rise of CO_(2), NO_(X) and PM emissions. Within some density ranges, one finds that these pollutant emissions can evolve into some higher values under some random seeds. Under other random seeds, they can evolve into some lower values. In a wide moving jam region, the emission values of these pollutants sometimes appear as continuous or intermittent phenomenon. Compared to the refined Na Sch model, the present model has lower instantaneous emissions such as CO_(2), NO_(X) and PM and higher volatile organic components(VOC) emissions. Compared to the limited deceleration capacity model without slow-to-start rules, the present model also has lower instantaneous emissions such as CO_(2), NO_(X) and PM and higher VOC emissions in a wide moving jam region. These results can also be confirmed or explained by the statistical values of vehicle velocity and acceleration.

关键词： traffic emissions speed humps slow-to-start rules deceleration capacity

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Narrow-channel-spacing 32-channel AWG multiplexer with an innovative alignment method

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Optoelectronics Letters 2005年第2期1卷 131-133页

作者： LI Jian AN jun-ming xia jun-lei wang Hong-jie HU Xiong-wei Institute of Semiconductors Chinese Academy of Sciences P . O . Box 912 Beijing 100083 China

A 32-channel 50 GHz spaced arrayed-waveguide grating(AWG) with our innovative configuration has been designed and *** performance of the device has been fully tested by using a system that consists of a tunable laser light source (TLS), an optical power meter and a polarization *** insertion loss (IS) of the device is 4.2-7.4 *** crosstalk is about -28 *** IS uniformity is less than 3.3 *** our configuration,the performance of the device has been enhanced effectively and the difficulty in alignment process has been decreased obviously.

关键词：通信技术窄通道间距多路复用器 AWG 偏振现象

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Observation on the therapeutic effect of aspirin in combined with ozagrel sodium in the treatment of acute cerebral infarction

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Journal of Hainan Medical University 2017年第4期23卷 141-144页

作者： Wu-Cheng Ye jun-xia wang Peng Ye Bo He Department of Pediatrics Xingyuan Hospital of Yulin Shaanxi ProvinceYulin CityShaanxi Province719000 Neonatology Department Yulin Children's Hospital in Shaanxi ProvinceYulin CityShaanxi Province719000

Objective:To evaluate the changes in serum index levels after monosialoganglioside injection combined with conventional treatment of neonatal hypoxic ischemic encephalopathy. Methods:A total of 70 children with neonatal hypoxic ischemic encephalopathy treated in our hospital between February 2013 and February 2016 were selected and randomly divided into observation group and control group, control group received clinical routine treatment and observation group accepted monosialoganglioside injection combined with conventional treatment. After 1 week of treatment, serum levels of apoptosis factors, nerve function indexes, oxidation/anti-oxidation indexes and disease severity indexes of two groups of patients were ***:Serum PDCD5, sFas, sFasL, NSE, S100-β, MDA, NO, NOS, H-FABP, NPY, caspase-1 and ET-1 levels of observation group were lower than those of control group while BDNF, NGF, SOD, GSH-PX, IGF-1 and GH levels were higher than those of control ***: Monosialoganglioside injection can enhance the overall treatment effect and promote the realization of homeostasis in children with HIE.

关键词： Neonatal hypoxic ischemic encephalopathy Monosialoganglioside Apoptosis Oxidative stress

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基于改进DEA模型的城市生态福利绩效评价研究——以我国35个大中城市为例

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自然资源学报 2017年第4期32卷 595-605页

作者：龙亮军王霞郭兵同济大学经济与管理学院上海200092 上海交通大学安泰经济与管理学院上海200052

论文首先基于数据包络分析(DEA)方法构建城市生态福利绩效的评价指标体系,以我国35个大中城市(省级和副省级城市)为例,采用2013年的截面数据,选取考虑松弛变量的Super-SBM模型测算城市生态福利绩效水平,并在此基础上运用Tobit模型回归... 详细信息

论文首先基于数据包络分析(DEA)方法构建城市生态福利绩效的评价指标体系,以我国35个大中城市(省级和副省级城市)为例,采用2013年的截面数据,选取考虑松弛变量的Super-SBM模型测算城市生态福利绩效水平,并在此基础上运用Tobit模型回归分析其影响因素。研究表明:1)我国35个大中城市2013年的整体生态福利绩效水平不高,且城市间差距较大,青岛、海口等沿海旅游城市的生态福利绩效水平明显处于领先地位,然而经济发达的长三角地区包括上海、南京、杭州等城市均排名靠后;2)从区域层面上看,呈现出"东部最高、中部次之、西部最低"的态势;3)经济产出贡献率和产业结构与生态福利绩效呈负相关,城市紧凑度和绿化与生态福利绩效呈显著正相关。最后根据实证分析结果提出针对性政策建议。

关键词：城市生态福利绩效可持续发展指标体系 Super-SBM Tobit模型

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MicroRNA-7 regulates glioblastoma cell invasion via targeting focal adhesion kinase expression

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Chinese Medical Journal 2011年第17期124卷 2616-2621页

作者： WU De-gang wang Ying-yi FAN Li-gang LUO Hui HAN Bin SUN Li-hua wang Xie-feng ZHANG jun-xia CAO Lei wang Xi-rui YOU Yong-ping LIU Ning Department of Neurosurgery First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210029 China

Background Invasion growth is the most characteristic biological phenotype of glioblastoma, but the molecular mechanism in glioma cell invasion is poorly understood. Recent data have showed that microRNA plays an essential role in tumor invasion. Our study aimed to explore the mechanism of miR-7 involved in the control of glioblastoma cell invasion. Methods Glioma cell invasion was evaluated by transwell and scratch assays after up-regulation of miR-7 using miR-7 mimics in U87 and U251 cells. Luciferase reporter assay was used to determine focal adhesion kinase （FAK） as a target of miR-7. The levels of miR-7, matrix metalloproteinases （MMP）-2 and MMP-9 mRNA were detected by PCR assay, and the levels of FAK, MMP-2, MMP-9, total and phosphorylation serine/threonine kinase （AKT）, and extracellular signal-regulated kinase （ERK） 1/2 were measured by Western blotting analysis. Results Over-expression of miR-7 inhibited the invasion and migration activity of U87 and U251 cells. And up-regulation of miR-7 reduced FAK protein expression, Further, luciferase reporter assay showed that miR-7 modulated FAK expression directly by binding 3＇UTR of FAK mRNA. In addition, miR-7 repressed p-ERK1/2 and p-AKT level, MMP-2 and MMP-9 expression. Finally, the inverse relationship between FAK and miR-7 expression was certificated in human glioma tissues. Conclusion To our knowledge, these data indicate for the first time that miR-7 directly regulates cell invasion by targeting FAK in glioblastoma and that miR-7 could be a potential therapeutic target for glioblastoma intervention.

关键词： microRNA glioblastoma cell invasion focal adhesion kinase

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大气污染对北京冬季城市和郊区辐射收支影响的观测分析

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地球物理学报 2016年第11期59卷 3996-4006页

作者：王昕然苗世光窦军霞董璠王京丽中国气象科学研究院北京100081 中国气象局北京城市气象研究所北京100089 中国气象局京津冀环境气象预报预警中心北京100089

近年来城市化和大气污染对辐射收支的影响日益显著.本研究利用2013—2014年中国科学院大气物理研究所325m铁塔、南郊观象台、密云气象塔、上甸子区域大气本底站四个观测站点的辐射及自动站气象要素数据,采用南郊观象台的能见度资料将观... 详细信息

近年来城市化和大气污染对辐射收支的影响日益显著.本研究利用2013—2014年中国科学院大气物理研究所325m铁塔、南郊观象台、密云气象塔、上甸子区域大气本底站四个观测站点的辐射及自动站气象要素数据,采用南郊观象台的能见度资料将观测数据分为清洁天和污染天,并进行类比分析,以1月份为例,研究了北京地区大气污染和城郊差异对辐射收支的影响.结果表明:(1)从月平均值来看,各站污染天入射短波辐射均小于清洁天,衰减最大可达55.8W·m^(-2),直接辐射亦然,衰减最大可达161.1W·m^(-2),散射辐射相反,增加最大值为72.2W·m^(-2);长波辐射污染天大于清洁天,向下向上长波辐射增加最大值分别为85.0 W·m^2和70.0 W·m^(-2),且长波辐射的衰减与污染物浓度和大气温度相关;净辐射白天污染天小于清洁天,夜间相反.(2)从各站的对比可知,大气污染对入射短波辐射的衰减,南部郊区(13.2%)大于北部城区(7.4%),与北京地区"南北两重天"的污染物分布特征一致;且污染物对长短波辐射的影响呈现了从城区到郊区衰减率依次减小的现象.本研究为大气污染与气象条件的相互作用研究提供了观测基础.

关键词：大气污染辐射收支城市郊区北京

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Narrow-channel-spacing 32-channel AWG multiplexer with an innovative alignment method

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Optoelectronics Letters 2005年第2期 55-57页

作者： LI Jian-(**), AN jun-ming, xia jun-lei, wang Hong-jie, and HU Xiong-wei Institute of Semiconductors,Chinese Academy of Sciences,P.O.Box 912,Beijing 100083,China

关键词： AWG nm Narrow-channel-spacing 32-channel AWG multiplexer with an innovative alignment method mode

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P2P网络借贷平台经济犯罪与防控机制研究

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公安理论与实践（上海公安高等专科学校学报） 2016年第6期26卷 13-25页

作者：夏军王春上海公安高等专科学校上海200137

随着互联网金融的迅速发展,网络借贷行业迅猛发展。P2P网贷平台数量的快速增长,导致发生问题平台的数量也随之增多,其引发的风险以及监管问题得到有关监管部门的重视。2016年8月24日,中国银监会等四部委联合发布了《网络借贷信息中介机... 详细信息

随着互联网金融的迅速发展,网络借贷行业迅猛发展。P2P网贷平台数量的快速增长,导致发生问题平台的数量也随之增多,其引发的风险以及监管问题得到有关监管部门的重视。2016年8月24日,中国银监会等四部委联合发布了《网络借贷信息中介机构业务活动管理暂行办法》,以规范网络借贷的乱象。为有效打击与防范P2P网络借贷型经济犯罪,应借鉴美国等西方国家P2P平台信用风险评估与管理风险量化理念,围绕行政监管、行业自律、征信体系建设、刑事司法处罚等多维度地开展相关工作。

关键词： P2P 网络借贷经济犯罪平台风险防控策略

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