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| 1 | Current pattern of Chinese dialysis units: a cohort study in a representative sample of units显示文摘 | ZHOU Qiu-gen JIANG Jian-ping WU Sheng-jie TIAN Jian-wei CHEN Jiang-hua YU Xue-qing CHEN Ping-yan MEI Chang-lin XIONG Fei SHI Wei ZHOU Wei LIU Xu-sheng SUN Shi-ren XIE Di LIU Jun XU Xin HOU Fan-fan | 2012 | Chinese Medical Journal2012,,19: | 69 |
| 2 | Black carbon aerosols and their radiative properties in the Pearl River Delta region显示文摘The climatic and environmental effects of atmospheric aerosols are a hot topic in global science community, and radiative properties of the aerosols are one of the important parameters in assessing climatic change. Here we studied the black carbon concentration and absorption coefficient measured with aethalometers, scattering coefficient measured with nephelometers, and single scattering albedo derived at an atmospheric composition watch station in Guangzhou from 2004 to 2007. Our main results are as follows. The data of black carbon concentration and absorption coefficients measured with instruments cannot be directly used until they are measured in parallel with internationally accepted instruments for comparison, calibration, and reduction. After evaluation of the data, the result shows that the monthly mean of BC concentration varies 3.1―14.8 μg·m-3 and the concentration decreases by about 1 μg·m-3 in average over the four years; It is higher in the dry season with a multi-year mean of 8.9 μg/m3 and lower in the rainy season with a multi-year mean of 8.0 μg·m-3; The extreme maximum of monthly mean concentration occurred in December 2004 and extreme minimum in July 2007, and a 4-year mean is 8.4 μg·m-3. It is also shown that monthly mean scattering coefficient derived varies 129 -565 Mm-1, monthly mean absorption coefficient 32-139 Mm-1, and monthly mean single scattering albedo 0.71-0.91, with annual mean values of 0.80, 0.82, 0.79 and 0.84 for 2004, 2005, 2006 and 2007, respectively. Three instruments were used to take simultaneous measurements of BC in PM10, PM2.5, and PM1 and the results showed that PM2.5 took up about 90% of PM10 and PM1 accounted for about 68% of PM2.5, and BC aerosols are mainly present in fine particulates. The variability of BC concentrations is quite consistent between the Nancun station (141 m above sea level) and the Panyu station (13 m above sea level), which are 8 km apart from each other. The concentration in higher altitude station (Panyu) is consistently lower than the lower altitude station (Nancun), and the difference of annual mean is about 4 μg·m-3. | WU Dui MAO JieTai DENG XueJiao TIE XueXi ZHANG YuanHang ZENG LiMin LI Fei TAN HaoBo BI XueYan HUANG XiaoYing CHEN Jing DENG Tao | 2009 | Science China Earth Sciences2009,52,8: | 58 |
| 3 | Abdominal compartment syndrome in patients with severe acute pancreatitis in early stage显示文摘AIM: To study retrospectively the influence of intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) in patients with early acute pancreatitis (AP) (during the first week after admission) on physiological functions, and the association of the presence of IAH/ACS and outcome. METHODS: Patients (n = 74) with AP recruited in this study were divided into two groups according to intra-abdominal pressure (IAP) determined by indirect measurement using the transvesical route via Foley bladder catheter during the first week after admission. Patients (n = 44) with IAP ≥ 12 mmHg were assigned in IAH group, and the remaining patients (n = 30) with IAP < 12 mmHg in normal IAP group. For analysis of the influence of IAH/ACS on organ function and outcome, the physiological parameters and the occurrence of organ dysfunction during intensive care unit (ICU) stay were recorded, as were the incidences of pancreatic infection and in-hospital mortality. RESULTS: IAH within the first week after admission was found in 44 patients (59.46%). Although the APACHE Ⅱ scores on admission and the Ranson scores within 48 h after hospitalization were elevated in IAH patients in early stage, they did not show the statistically significant differences from patients with normal IAP within a week after admission (16.18 ± 3.90 vs 15.70 ± 4.25, P = 0.616; 3.70 ± 0.93 vs 3.47 ± 0.94, P = 0.285, respectively). ACS in early AP was recorded in 20 patients (27.03%). During any 24-h period ofthe first week after admission, the recorded mean IAP correlated significantly with the Marshall score calculated at the same time interval in IAH group (r = 0.635, P < 0.001). Although ACS patients had obvious amelioration in physiological variables within 24 h after decompression, the incidences of pancreatitic infection, septic shock, multiple organ dysfunction syndrome (MODS) and death in the patients with ACS were significantly higher than that in other patients without ACS (pancreatitic infection: 60.0% vs 7.4%, P < 0.001; septic shock: 70.0% vs 11.1%, P < 0.001; MODS: 90.0% vs 31.5%, P < 0.001; mortality: 75.0% vs 3.7%, P < 0.001). CONCLUSION: IAH/ACS is a frequent finding in patients admitted to the ICU because of AP. Patients with IAP at approximately 10-12 mmHg and early signs of changes in physiologic variables should be seriously considered for urgent decompression to improve survival. | Hong Chen Fei Li Jia-Bang Sun Jian-Guo Jia | 2008 | World Journal of Gastroenterology2008,14,22: | 51 |
| 4 | Mapping wetland changes in China between 1978 and 2008显示文摘Four wetland maps for all China have been produced,based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978,1990,2000 and 2008).These maps were mainly developed by manual interpretation and validated by substantial field investigation in 2009.Based on these maps,we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years.(i) There were about 324097 km 2 of wetlands in 2008,for which inland marshes or swamps were the most common wetland type (35%),with lakes (26%) second.Most of the wetlands were in Heilongjiang,Inner Mongolia,Qinghai and Tibet,occupying about 55% of the national wetland area.(ii) From 1978 to 2008,China's wetland area continually and significantly decreased,by about 33% based on changes in the wetland map.This was in sharp contrast to the increase in artificial wetlands,which increased by about 122%.Inland marshes accounted for the main loss of total wetlands from 1978 to 2000.From 2000 through 2008,riverine and lacustrine wetlands constituted the main wetland loss.Fortunately however,the rate of wetland loss decreased from 5523 to 831 km 2 /a.(iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 years.From 1978 to 1990,nearly all natural wetlands (98%) lost were transformed into non-wetlands.However,the ratio declined to 86% from 1990 to 2000,and to 77% from 2000 to 2008.(iv) All Chinese provinces were divided into three groups according to patterns of wetland changes,which could relate to the driving forces of such changes.Tibet was completely different from other provinces,as it was one representative example in which there was a net wetland increase,because of global warming and decreased human activity since 1990.Increased economic development caused considerable wetland loss in most eastern provinces,and artificial wetlands increased. | NIU ZhenGuo ZHANG HaiYing WANG XianWei YAO WenBo ZHOU DeMin ZHAO KuiYi ZHAO Hui LI NaNa HUANG HuaBing LI CongCong YANG Jun LIU CaiXia LIU Shuang WANG Lin LI Zhan YANG ZhenZhong QIAO Fei ZHENG YaoMin CHEN YanLei SHENG YongWei GAO XiaoHong ZHU WeiHong WANG WenQing WANG Hong WENG YongLing ZHUANG DaFang LIU JiYuan LUO ZhiCai CHENG Xiao GUO ZiQi GONG Peng | 2012 | Chinese Science Bulletin2012,57,22: | 51 |
| 5 | 北京精细下垫面信息引入对暴雨模拟的影响显示文摘首先根据2000年环北京实际的精细下垫面布局资料(500m分辨率),按美国USGS陆面资料分类标准(25类)对其提供的全球30 s经纬分辨率(≈1 km)下垫面分类资料进行了更新设计.进而针对一个北京夏季暴雨过程,利用10:3.3km双向双重嵌套的MM5V3.6-Noah LSM陆气耦合模式进行24h数值对比试验,研究了北京精细下垫面信息引入对暴雨的影响.分析表明:新设计的陆面资料更真实地反映了环北京区域的下垫面结构,尤其针对北京城区面积迅增特征;同时还修正了原资料将亚洲中纬度区域落叶阔叶林下垫面类型归属为热带(或亚热带)稀疏大草原类型的问题.其在数值天气模式中的引入会对短期暴雨过程的发生发展产生重要影响.对此次暴雨主要降水中心的模拟,12h差值分布范围远达30km以上,中心值相对差异可达30%.研究发现在城市下垫面和大气相互间存在一个重要的相互影响机制,即由于城区面积的扩大会导致自然植被减少,进而会减少地表蒸发及相应局地大气水分供应、加深边界层高度并增强大气水汽混合,这不利于降水的发生发展. | 张朝林 苗世光 李青春 CHEN Fei | 2007 | 地球物理学报2007,50,5: | 49 |
| 6 | Ulinastatin attenuates LPS-induced inflammation in mouse macrophage RAW264.7 cells by inhibiting the JNK/NF-KB signaling pathway and activating the PI3K/Akt/Nrf2 pathway显示文摘 | Si-tong LI Qi DAI Shu-xian ZHANG Ya-jun LIU Qiu-qiong YU Fei TAN Shu-hong LU Quan WANG Jian-wen CHEN He-qing HUANG Pei-qing LIU Min LI | 2018 | Acta Pharmacologica Sinica2018,39,8: | 43 |
| 7 | Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China显示文摘To control the spread of the 2019 novel coronavirus(COVID-19),China imposed nationwide restrictions on the movement of its population(lockdown)after the Chinese New Year of 2020,leading to large reductions in economic activities and associated emissions.Despite such large decreases in primary pollution,there were nonetheless several periods of heavy haze pollution in eastern China,raising questions about the well-established relationship between human activities and air quality.Here,using comprehensive measurements and modeling,we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution.In particular,large decreases in NOx emissions from transportation increased ozone and nighttime NO_(3)radical formation,and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter.Our results,afforded by the tragic natural experiment of the COVID-19 pandemic,indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants. | Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven JDavis Qiang Zhang Kebin He | 2021 | National Science Review2021,8,2: | 47 |
| 8 | DK crush technique: modified treatment of bifurcation lesions in coronary artery显示文摘 | CHEN Shao-liang YE Fei ZHANG Jun-jie ZHU Zhong-sheng LIN Song SHAN Shou-jie LIU Zhi-zhong LIU Yan DUAN Bao-xiang GE Jun-bo | 2005 | Chinese Medical Journal2005,,20: | 35 |
| 9 | Treatment outcomes for different subgroups of nasopharyngeal carcinoma patients treated with intensity-modulated radiation therapy显示文摘Although many studies have investigated intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma (NPC),sample sizes in the reported studies are usually small and different in outcomes in different T and N subgroups are seldom analyzed.Herein,we evaluated the outcomes of NPC patients treated with IMRT and further explored treatment strategy to improve such outcome.We collected clinical data of 865 NPC patients treated with IMRT alone or in combination with chemotherapy,and classified all cases into the following prognostic categories according to different TNM stages:early stage group (T1-2N0-1M0),advanced local disease group (T3-4N0-1M0),advanced nodal disease group (T1-2N2-3M0),and advanced locoregional disease group (T3-4N2-3M0).The 5-year overall survival (OS),local relapse-free survival (LRFS),and distant metastases-free survival (DMFS) were 83.0%,90.4%,and 84.0%,respectively.The early disease group had the lowest treatment failure rate,with a 5-year OS of 95.6%.The advanced local disease group and advanced nodal disease group had similar failure pattern and treatment outcomes as well as similar hazard ratios for death (4.230 and 4.625,respectively).The advanced locoregional disease group had the highest incidence of relapse and death,with a 5-year DMFS and OS of 62.3% and 62.2%,respectively,and a hazard ratio for death of 10.402.Comparing with IMRT alone,IMRT in combination with chemotherapy provided no significant benefit to locoregionally advanced NPC.Our results suggest that the decision of treatment strategy for NPC patients should consider combinations of T and N stages,and that IMRT alone for early stage NPC patients can produce satisfactory results.However,for advanced local,nodal,and locoregional disease groups,a combination of chemotherapy and radiotherapy is recommended. | Sheng-Fa Su 1,2,3,Fei Han 1,2,Chong Zhao 1,2,Ying Huang 1,2,Chun-Yan Chen 1,2,Wei-Wei Xiao 1,2,Jia-Xin Li 1,2 and Tai-Xiang Lu 1,2 1 State Key Laboratory of Oncology in South China,Guangzhou,Guangdong 510060,P.R.China 2 Department of Radiation Oncology,Sun Yat-sen University Cancer Center,Guangzhou,Guangdong 510060,P.R.China 3 Department of Oncology,Guiyang Medical College Hospital,Tumor Hospital of Guizhou,Guiyang,Guizhou 550003,P.R.China. | 2011 | Chinese Journal of Cancer2011,30,8: | 40 |
| 10 | Identification of differentially expressed genes in omental adipose tissues of obese patients by suppression subtractive hybridization显示文摘 | Qiu, J. Ni, Y. H. Gong, H. X. Fei, L. Pan, X. Q. Guo, M. Chen, R. H. Guo, X. R. | 2007 | 南京医科大学学报(自然科学版)2007,27,4: | 34 |
| 11 | Prevalence of HPV Infection And Cervical Intraepithelial Neoplasia And Attitudes towards HPV Vaccination among Chinese Women Aged 18-25 in Jiangsu Province显示文摘Objective:Few data are available on the epidemiology of HPV and cervical cancer among Chinese women younger than 25 years old.This study aimed to estimate the HPV infection rate and the prevalence of cervical intraepithelial neoplasia(CIN) in women aged 18-25,as well as their knowledge of and attitudes towards HPV vaccination.Methods:A population-based cervical cancer screening study was conducted on women aged 18-25 in Jiangsu province in 2008.Participants provided socio-demographic,reproductive and behavioral information and completed a survey about their knowledge of and attitudes towards HPV vaccination.Women then underwent a gynecologic exam to provide two cervical exfoliated cell samples for high risk HPV DNA testing and liquid-based cytology(LBC) as well as visual inspection with acetic acid(VIA).Women testing positive for any test were referred to colposcopy and biopsy.The gold standard for diagnosis of cervical lesions was directed or random biopsies.Results:Within the sample of 316 women,3.4% of them were diagnosed with CIN grade 2 or worse lesions and 17.1% were found to be positive for HPV DNA.Among these young women,extra-marital sexual behavior of them(OR=2.0,95%CI:1.1-3.8) or their husbands(OR=2.6,95%:1.4-4.7) were associated with an increased risk of HPV positivity.Although overall HPV awareness was low,after a brief educational intervention,98.4% reported they would electively receive HPV vaccination and would also recommend that their daughters be vaccinated.However,most urban and rural women reported their ideal maximum out-of-pocket contribution for HPV vaccination to be less than 500 RMB and 50-100 RMB,respectively.Conclusion:Our study indicates cervical disease burden is relatively high among sampled Chinese women aged 18-25.Appropriate educational interventions for female adolescents and strategies to subsidize vaccine costs are definitely needed to ensure the effectiveness of vaccination campaigns in China. | Shang-ying Hu Ying Hong Fang-hui Zhao Adam K. Lewkowitz Feng Chen Wen-hua Zhang O.in-jing Pan Xun Zhang Cindy Fei Hui Li You-lin Qiao | 2011 | Chinese Journal of Cancer Research2011,23,1: | 31 |
| 12 | Methylophiopogonanone A suppresses ischemia/ reperfusion-induced myocardial apoptosis in mice via activating PI3K/Akt/eNOS signaling pathway显示文摘瞄准:Ophiopogon japonicus 的弄干的 tuber 根为心肌的局部缺血和血栓的处理在繁体中文药被使用了。在这研究,我们调查了 methylophiopogonanone A (恐鸟) 的效果,在 Ophiopogon japonicus 的主要 homoisoflavonoid,在心肌的 ischemia/reperfusion (I/R ) 上 injury.Methods:老鼠是有恐鸟的 pretreated (10 mg· kg -1·d-1, po ) 为 2 个星期然后使遭到了到左前面的下降冠的动脉的短暂吸藏。心脏的功能被评估,并且梗塞尺寸和 apoptosis 索引被估计。位于恐鸟的 cardio 保护下面的机制在受到 hypoxia/reoxygenation (H/R ) 的 H9C2 老鼠 cardiomyocytes 被分析。房间生存能力和 apoptosis 被评估;apoptotic 和相关发信号蛋白质被分析。在文化媒介的层次都不是 assessed.Results:在 I/R 鼠标,有恐鸟的预告的处理显著地减少了梗塞尺寸(在 60.7%) 并且心肌的 apoptosis (在 56.8%) ,并且改进心脏的功能。在受到 H/R 的 H9C2 房间,有恐鸟的预告的处理(10 μ mol/L ) 显著地减少的 apoptosis 和劈开的 caspase-3 表示,提高了 Bcl-2/Bax 比率并且没恢复生产。而且,有恐鸟的预告的处理显著地在受到 H/R 的 H9C2 房间增加了 PI3K/Akt/eNOS 小径的激活,并且恐鸟的保护的效果面对 PI3K 禁止者 wortmannin (100 nmol/L ) 被废除 .Conclusion:恐鸟稀释 I/R-induced 在经由激活发信号的 PI3K/Akt/eNOS 的老鼠的心肌的 apoptosis 小径。 | Fei HE Bang-long XU Cai CHEN Hong-jing JIA Ji-xiong WU Xiao-chen WANG Jian-long SHENG Li HUANG Jing CHENG | 2016 | Acta Pharmacologica Sinica2016,37,6: | 32 |
| 13 | Karyotype Stability and Unbiased Fractionation in the Paleo-Allotetraploid Cucurbita Genomes显示文摘 | Honghe Sun Shan WU Guoyu Zhang Chen Jiao Shaogui Guo Yi Ren Jie Zhang Haiying Zhang Guoyi Gong Zhangcai Jia Fan Zhang Jiaxing Tian William J. Lucas Jeff J. Doyle Haizhen Li Zhangjun Fei Yong Xu | 2017 | Molecular Plant2017,10,10: | 33 |
| 14 | Heme oxygenase-1 protects donor livers from ischemia/reperfusion injury:The role of Kupffer cells显示文摘AIM:To examine whether heme oxygenase (HO)-1 overexpression would exert direct or indirect effects on Kupffer cells activation, which lead to aggravation of reperfusion injury.METHODS: Donors were pretreated with cobalt protoporphyrin (CoPP) or zinc protoporphyrin (ZnPP), HO-1 inducer and antagonist, respectively. Livers were stored at 4℃ for 24 h before transplantation. Kupffer cells were isolated and cultured for 6 h after liver reperfusion.RESULTS: Postoperatively, serum transaminases were significantly lower and associated with less liver injury when donors were pretreated with CoPP, as compared with the ZnPP group. Production of the cytokines tumor necrosis factor-α and interleukin-6 generated by Kupffer cells decreased in the CoPP group. The CD14 expression levels (RT-PCR/Western blots) of Kupffer cells from CoPP-pretreated liver grafts reduced.CONCLUSION: The study suggests that the potential utility of HO-1 overexpression in preventing ischemia/reperfusion injury results from inhibition of Kupffer cells activation. | Zeng, Zhong Huang, Han-Fei Chen, Ming-Qing Song, Fei Zhang, Yu-Jun | 2010 | World Journal of Gastroenterology2010,16,10: | 29 |
| 15 | 陆面水文过程与大气模式的耦合及其在黑河流域的应用显示文摘陆面过程模式对陆面水文过程有比较详尽的描述,然而,目前的陆面水文过程只考虑了垂直方向的水分运移,比较适合平坦地区的模拟,而在地形坡度较大的山区只考虑垂直方向的水分移动是不够的,尤其是目前随着计算机条件提高,分辨率越来越高,地表水以及土壤水的侧向流动成为山区水文过程必须考虑的部分。同时,目前的陆面过程模式中的径流量是作为诊断量处理,不参与运算。针对以上问题,对Noah陆面过程模式进行了改进,增加了地表积水和积水蒸发、坡面汇流方案、次表面流方案,并且将Routing模块通过次网格过程与大气中尺度模式MM5耦合,发展了高分辨率大气-水文耦合模式。运用发展的高分辨率大气-水文耦合模式,对黑河流域中上游2003年6月23-25日降水过程进行了模拟,研究了陆面水循环过程对大气场的影响。结果表明陆面水循环过程对近地层大气影响很大,首先影响了土壤的湿度与蒸发,进而对边界层稳定性,云结构、云水、雨水含量产生影响,对区域降水也有一定影响。 | 高艳红 程国栋 崔文瑞 CHEN Fei David Gochis YU Wei | 2006 | 地球科学进展2006,21,12: | 29 |
| 16 | Effects of large dose of dexamethasone on inflammatory mediators and pancreatic cell apoptosis of rats with severe acute pancreatitis显示文摘AIM: To investigate the influence of high dose of dexamethasone on inflammatory mediators and apoptosis of rats with severe acute pancreatitis (SAP). METHODS: SAP rats were randomly assigned to the model group and treatment group while the normal rats were assigned to the sham operation group. The mortality,ascite volumes,ascites/body weight ratio and pancreas pathological changes of all rats were observed at 3,6 and 12 h after operation. Their contents of amylase and endotoxin in plasma and contents of tumor necrosis factor (TNF-α),phospholipase A2 (PLA2) and IL-6 in serum were also determined. The microarray sections of their pancreatic tissues were prepared,terminal transferase dUTP nick end labeling (TUNEL) staining was performed and apoptotic indexes were calculated. RESULTS: There was no marked difference between treatment group and model group in survival. The contents of amylase and endotoxin in plasma and contents of TNF-α,PLA2 and IL-6 in serum,ascite volumes,ascites/body weight ratio and pancreas pathological scores were all lower in treatment group than in model group to different extents at different time points P < 0.05,58.3 (26.4) ng/L vs 77.535 (42.157) ng/L in TNF-α content,8.00 (2.00) points vs 9.00 (2.00) points in pathological score of pancreas respectively; P < 0.01,0.042 (0.018) EU/mL vs 0.056 (0.0195) EU/mL in endotoxin content,7791 (1863) U/L vs 9195 (1298) U/L in plasma amylase content,1.53 (0.79) vs 2.38 (1.10) in ascites/body weight ratio,8.00 (1.00) points vs 11.00 (1.50) points in pathological score of pancreas; P < 0.001,3.36 (1.56) ng/L vs 5.65 (1.08) ng/L in IL-6 content,4.50 (2.00) vs 7.20 (2.00),4.20 (1.60) vs 6.40 (2.30),3.40 (2.70) vs 7.90 (1.70) in ascite volumes,respectively. The apoptotic indexes of pancreas head and pancreas tail were all higher in treatment group than in model group at 6 h P < 0.01,0.00 (2.00)% vs 0.00 (0.00)%,0.20 (1.80) vs 0.00 (0.00) in apoptosis indexes,respectively. CONCLUSION: The mechanism of dexamethasone treatment in acute pancreatitis is related to its inhibition of inflammatory mediator generation and induction of pancreatic acinar cell apoptosis. | Xi-Ping Zhang Li Chen Qi-Fang Hu Hua Tian Ru-Jun Xu Zhi-Wei Wang Ke-Yi Wang Qi-Hui Cheng Wei Yan Yun Li Qing-Yu Li Qing He Fei Wang | 2007 | World Journal of Gastroenterology2007,13,41: | 29 |
| 17 | 北京城市化对夏季大气边界层结构及降水的月平均影响显示文摘为克服针对一次或几次天气过程研究城市化对边界层结构及降水影响的局限性,尝试研究北京城市化对夏季大气边界层结构及降水的月平均影响,本文首先总结了2006年8月份的主要天气过程,分析了气象站观测的10 m高度风速、2 m高度气温、2 m高度比湿和24 h降水的月平均分布特征,然后利用WRF/Noah/UCM模拟系统,进行了该月30个个例的高分辨率数值模拟及检验分析,并通过多组不同城市化情景的敏感性试验对比分析了城市化对夏季大气边界层结构及降水的月平均影响.研究表明:本文所用对高分辨率数值模拟结果进行月平均的方法可以较合理地模拟出城市化对大气边界层结构及降水的影响,并再现观测到的各站风频差异.8月份,北京城市化对气温的影响高度白天约为800 m,近地面气温升高1℃以上;夜间约为200 m,对近地面气温的影响达到最大(1.4℃以上).白天,城市化使城市及下风向的一些区域风速略有减小;夜间,城市及周边区域200 m以下风速明显减小,且在100 m左右高度处风速减小最明显,减小达0.8 m/s以上.城市化白天使700 m以下比湿减小,近地面处减小达1.2g/kg以上,夜间使近地面空气比湿略有减小.城市化对城市区域平均降水量的影响随城市发展的不同阶段而不同.初步模拟分析表明,北京城市化已使上风向区域以及城区三环以内降水量减少,海淀和昌平降水明显增加. | 苗世光 CHEN Fei 李青春 范水勇 | 2010 | 地球物理学报2010,53,7: | 30 |
| 18 | Oral health status in Sichuan Province: findings from the oral health survey of Sichuan, 2015–2016显示文摘To investigate oral health status in the residents of Sichuan Province, southwest China, a cross-sectional study was performed using the latest Oral Health Survey Basic Methods recommended by the World Health Organization. A multistage stratified random cluster-sampling method was used to enroll participants from the following three groups: children aged 3–5 years,adolescents aged 12 years, and people aged 65–74 years. In these three groups, the mean numbers of teeth that were affected by caries were 3.28, 0.86 and 5.13, respectively, resulting in a prevalence of 63.47%, 37.20% and 83.20%, respectively.Relative to the high rate of decayed teeth, the prevalence of fillings was very low in all age groups(0.97%, 7.24% and 5.43%,respectively). In the 12-year-old adolescent group, only 3.61% had good pit and fissure sealing. In addition, the rate of dental fluorosis was 24.80%, and the Community Fluorosis Index value was 0.39. In the elder group, the community periodontal index was2.92. The prevalence in the elderly of having lost at least one tooth was 75.54%. Additionally, 4.44% of these participants were edentulous. The incidence of dental prosthesis was 51.75%, the proportion with a removable partial denture, a fixed denture, full dentures, dental implants and an informal fixed bridge was 21.59%, 11.45%, 4.64%, 0 and 16.67%, respectively. In this study,8.2% of the elderly participants were affected by different types of oral mucosal lesions. Among such lesions, recurrent aphthous ulcers were most prevalent(2.69%) and oral lichen planuses were second(1.6%). The conclusion presented in this survey is that oral diseases, especially dental caries and periodontal disease, are frequent and common in Sichuan province, China. Moreover, the treatment rate is very low, and primary prevention and treatment options are therefore urgently needed in this population. | Wei Yin Ying-Ming Yang Hong Chen Xue Li Zhuo Wang Li Cheng Qiu-Dan Yin Hong-Zhi Fang Wei Fei Fang-Lin Mi Min-Hai Nie Tao Hu Xue-Dong Zhou | 2017 | International Journal of Oral Science2017,9,1: | 30 |
| 19 | 北京城市地表能量平衡特征观测分析显示文摘本研究采用位于北京市北三环与北四环之间的325m气象塔47,140,280m三层高度上2009年7月1日至2010年6月30日一年的涡动相关观测资料,分析了该区域城市复杂下垫面的地表能量平衡特征.研究表明:(1)北京325m气象塔的观测结果代表了处在暖温带半湿润大陆性季风气候区的中国城市所特有的地表能量平衡特征,即:夏季炎热多雨、冬季寒冷干燥,造成夏季波恩比最小,秋季次之,冬季最大.140m高度上晴天条件下,春夏秋冬四季白天波恩比分别为2.86,0.82,1.17,4.16.(2)140m高度基本处于常值通量层.该层上,正午前后的反照率夏季约为0.10,春、秋季约为0.12,冬季约为0.14;白天储热在净辐射中所占比例夏天最小、冬天最大,分别为0.51和0.66;白天感热、潜热、储热占净辐射比例的年均值,晴天时分别为0.25,0.16和0.59,多云时分别为0.33,0.19和0.48.(3)晴天的夜间,各季节感热均接近于零,而潜热均大于零;多云时,冬季夜间的感热略大于潜热.可推测:该部分夜间向上的热通量主要是由人类活动所释放,人为热在夏季以潜热为主,冬季则潜热和感热同等重要. | 苗世光 窦军霞 Fei CHEN 李炬 李爱国 | 2012 | 中国科学:地球科学2012,42,9: | 28 |
| 20 | Effects of traditional Chinese medicine on intestinal mucosal permeability in early phase of severe acute pancreatitis显示文摘背景繁体中文药广泛地被使用了因为在中国的许多年与严重尖锐胰腺炎(树液)在病人在肠的 mucosal 渗透和结果上调查了 Dachengqi 煎的效果对待尖锐 pancreatitis.We .Methods 与要求了承认到外科的特别护理单位的持续树液一起的四十个病人被注册有希望地在学习。所有在承认上随机这些病人被划分成 Dachengqi 煎组(n=20 ) 和控制组(n=20 ) 。肠的渗透被测量二个新陈代谢地惰性的标记, lactulose (L) 和甘露糖醇(M) 的吸收估计,它口头上地被管理。内毒素的浆液集中(lipopolysaccharide, LPS ) 并且到在尿(L/M ) 的甘露糖醇的 lactulose 的比率在控制组,与那些相比在所有 patients.Results 被检测尿 L/M 比率在承认(P=0.001 ) 以后在第 7 天在 Dachengqi 煎组显著地减少了。另外, LPS 的浆液集中在承认以后在第 5 和第 7 天被减少(P=0.006, P=0.008,分别地) 。多重机关机能障碍症候群( MODS )和胰腺的感染的发生与在控制组的那些相比在 Dachengqi 煎组是显著地更低的( P=0.038 , P=0.025 ,分别地) .Conclusion Dachengqi 煎可以支持肠的 mucosal 渗透和减少的恢复在与树液一起的病人的 MODS 和胰腺的感染的发生。 | CHEN Hong LI Fei JIA Jian-guo DIAO Yong-peng LI Zong-xin SUN Jia-bang | 2010 | Chinese Medical Journal2010,,12: | 25 |