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524篇 您的检索式:作者名="Zhan SUN"
    题名 作者 年代 出处 被引量
1Anatomical and chemical characteristics associated with lodging resistance in wheat显示文摘Anatomical and chemical characteristics of stems affect lodging in wheat(Triticum aestivum L.) cultivars. Traits associated with lodging resistance, such as plant height, stem strength, culm wall thickness, pith diameter, and stem diameter, were extensively investigated in earlier studies. However, the solid stem trait was rarely considered. In this study, we measured a range of anatomical and chemical characteristics on solid and hollow stemmed wheat cultivars. Significant correlations were detected between resistance to lodging and several anatomical features, including width of mechanical tissue, weight of low internodes, and width of stem walls. Morphological features that gave the best indication of improved lodging resistance were increased stem width, width of mechanical tissue layer, and stem density. Multiple linear regression analysis showed that 99% of the variation in lodging resistance could be explained by the width of the mechanical tissue layer, suggesting that solid stemmed wheat has several anatomical features for increasing resistance to lodging. In addition, microsatellite markers GWM247 and GWM340 were linked to a single solid stem QTL on chromosome 3BL in a population derived from the cross Xinongshixin(solid stem)/Line 3159(hollow stem). These markers should be valuable in breeding wheat for solid stem.Eryan Kong Dongcheng Liu Xiaoli Guo Wenlong Yang Jiazhu Sun Xin Li Kehui Zhan Dangqun Cui Jinxing Lin Aimin Zhang 2013The Crop Journal2013,1,1:43
2Cardiomyocyte overexpression of miR-27b induces cardiac hypertrophy and dysfunction in mice显示文摘最近的研究开始在心脏的肥大和机能障碍的致病揭示了 microRNAs (miRNAs ) 的关键角色。在这研究,我们测试了是否转变生长 factor-β(TGF-β) 调整 miRNA 在心脏的肥大和心失败(HF ) 的发展起了一个枢轴的作用。我们观察到 miR-27b 是在 cardiomyocyte 特定的 Smad4 猛烈老鼠的心的 upregulated,它开发了心脏的肥大。在 vitro,实验证明 miR-27b 表示能被 TGF-β 禁止; 1 并且它的 overexpression 支持了 hypertrophic 房间生长,当 miR-27b 抑制导致了 hypertrophic 房间的抑制时,生长由 phenylephrine (PE ) 引起了处理。而且,有 miR-27b 的 cardiomyocyte 特定的 overexpression 的转基因的老鼠的分析表明 miR-27b overexpression 是足够的导致心脏的肥大和机能障碍。我们验证了 peroxisome 激活 proliferator 的 receptor-γ(PPAR-γ) 作为在 cardiomyocyte 的 miR-27b 的一个直接目标。一致地, miR-27b 转基因的老鼠显著地显示了 PPAR-γ 的底层;比控制鼠标。而且,在用在一只 pressure-overload-induced 老鼠的特定的 antagomir 的 miR-27b 的 vivo silencing, HF 的模型增加了心脏的 PPAR-γ表示,稀释心脏的肥大和机能障碍。我们的学习的结果表明那 TGF-β 1-regulated miR-27b 涉及心脏的肥大的规定,并且为心脏病作为一个有效治疗学的目标验证 miR-27b。Jian Wang Yao Song Yan Zhang Han Xiao Qiang Sun Ning Hou Shuilong Guo Youliang Wang Kaiji Fan Dawei Zhan Lagabaiyila Zha Yang Cao Zhenhua Li Xuan Cheng Youyi Zhang Xiao Yang 2012Cell Research2012,22,3:36
3Recent developments in plastic forming technology of titanium alloys显示文摘Titanium alloys have been used extensively in industry fields including aviation,aerospace and automobile due to their excellent comprehensive properties.Research and development of advanced plastic forming technology are of great importance to manufacturing titanium products of high performance and lightweight with low cost and short cycle.This paper analyzes the development tendencies of titanium alloy forming technology.Recent achievements in precision forming,microstructure control and multi-scale simulation of titanium alloys are reviewed.The forming techniques of large-sale integral complex components are presented.YANG He FAN XiaoGuang SUN ZhiChao GUO LiangGang ZHAN Mei 2011Science China(Technological Sciences)2011,54,2:33
4(-)-Epigallocatechin-3-gallate inhibits growth of gastric cancer by reducing VEGF production and angiogenesis显示文摘AIM: To investigate the effect of (-)-epigallocatechin- 3-gallate (EGCG) on growth of gastric cancer and its possible mechanism. METHODS: Heterotopic tumors were induced by subcutaneously injection of SGC-7901 cells in nude mice. Tumor growth was measured by calipers in two dimensions. Tumor angiogenesis was determined with tumor microvessel density (MVD) by immunohistology. Vascular endothelial growth factor (VEGF) protein level and activation of signal transducer and activator of transcription 3 (Stat3) were examined by Western blotting. VEGF mRNA expression was determined by RT-PCR and VEGF release in tumor culture medium by ELISA. VEGF-induced cell proliferation was studied by MTT assay, cell migration by gelatin modified Boyden chamber (Transwell) and in vitro angiogenesis by endothelial tube formation in Matrigel. RESULTS: Intraperitoneal injection of EGCG inhibited the growth of gastric cancer by 60.4%. MVD in tumor tissues treated with EGCG was markedly reduced. EGCG treatment reduced VEGF protein level in vitro and in vivo. Secretion and mRNA expression of VEGF in tumor cells were also suppressed by EGCG in a dose-dependent manner. This inhibitory effect was associated with reduced activation of Stat3, but EGCG treatment did not change the total Stat3 expression. EGCG also inhibited VEGF-induced endothelial cell proliferation, migration and tube formation. CONCLUSION: EGCG inhibits the growth of gastriccancer by reducing VEGF production and angiogenesis, and is a promising candidate for anti-angiogenic treatment of gastric cancer.Bao-He Zhu, Wen-Hua Zhan, Zheng-Rong Li, Zhao Wang, Yu-Long He, Jun-Sheng Peng, Shi-Rong Cai, Jin-Ping Ma, Chang-Hua Zhang, Department of Gastrointestinal & Pancreatic Surgery, First Affiliated Hospital, Sun Yat-Sen University Gastric Center of Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China 2007World Journal of Gastroenterology2007,13,8:30
5The prognostic value of preoperative serum levels of CEA,CA19-9 and CA72-4 in patients with colorectal cancer显示文摘INTRODUCTIONCarcinoembryonic antigen ( CEA) , originally described by Gold and Freedman [1] in 1965, is now an acknowledged member of immunoglobulin superfamily[2],with a role as an intracellular adhesion molecule[3].Carbohydrate antigen 19-9(CA19-9), obtained with a monoclonal antibody produced by immunizing a monoclonal antibody produced by immunizing a mouse with a colonic cancer cell line in 1979[4],is a ligand for E-selectin that plays an important role in the addhesion of cancer cells to endothelial cells [5,6].Chao Xu Zheng~1 Wen Hua Zhan~1 Ji Zong Zhao~2 Dong Zheng~3 Dong Ping Wang~1 Yu Long He~1 Zhang Qing Zheng~1 ~1Department of General Surgery,~2Laboratory of Surgery,~3Department of Medicine,First Affiliated Hospital,Sun Yat-Sen University of Medical Sciences,Guangzhou 510080,Guangdong Province,ChinaDr.Chao Xu Zheng now working as a surgeon and lecturer in the Department of General Surgery,First Affiliated Hospital,Sun Yat-Sen University of Medical Sciences,who is a Ph.D.student,having 7 papers published. 2001World Journal of Gastroenterology2001,7,3:25
6Preoperative neutrophil-to-lymphocyte ratio plus platelet-to-lymphocyte ratioin predicting survival for patients with stage Ⅰ-Ⅱgastric cancer显示文摘Background:The preoperative neutrophil-to-lymphocyte ratio(NLR) and the platelet-to-lymphocyte ratio(PLR) are associated with poor prognosis of gastric cancer.We aimed to determine whether the combination of NLR and PLR(NLR-PLR) could better predict survival of patients after curative resection for stage Ⅰ-Ⅱ gastric cancer.Methods:We collected data from the medical records of patients with stage Ⅰ-Ⅱ gastric cancer undergoing curative resection between December 2000 and November 2012 at the Sun Yat-sen Cancer Center.The preoperative NLRPLR was calculated as follows:patients with both elevated NLR(≥2.1) and PLR(≥ 120) were given a score of 2,and patients with only one or neither were given a score of 1 or 0,respectively.Results:Kaplan-Meier analysis and log-rank tests revealed significant differences in overall survival(OS) among patients with NLR-PLR scores of 0,1 and 2(P < 0.001).Multivariate analysis showed that OS was independently associated with the NLR-PLR score[hazard ratio(HR) = 1.51,95%confidence interval(CI) 1.02-2.24,P = 0.039]and TNM stage(HR = 1.36,95%CI 1.01-1.83,P= 0.041).However,other systemic inflammation-based prognostic scores,including the modified Glasgow prognostic score,the prognostic nutritional index,and the combination of platelet count and NLR,were not.In TNM stage-stratified analysis,the prognostic significance of NLR-PLR was maintained in patients with stage Ⅰ(P < 0.001) and stage Ⅱ cancers(P= 0.022).In addition,the area under the receiver operating characteristic curve for the NLR-PLR score was higher than those of other systemic inflammation-based prognostic scores(P = 0.001).Conclusion:The preoperative NLR-PLR score is a useful predictor of postoperative survival in the patients with stage l-ll gastric cancer and may help identify high-risk patients for rational therapy and timely follow-up.Xiaowei Sun Xuechao Liu Jianjun Liu Shangxiang Chen Dazhi Xu Wei Li Youqing Zhan Yuanfang Li Yingbo Chen Zhiwei Zhou 2016Chinese Journal of Cancer2016,35,7:25
7Whole-genome sequencing of 508 patients identifies key molecular features associated with poor prognosis in esophageal squamous cell carcinoma显示文摘Esophageal squamous cell carcinoma(ESCC)is a poor-prognosis cancer type with limited understanding of its molecular etiology.Using 508 ESCC genomes,we identified five novel significantly mutated genes and uncovered mutational signature clusters associated with metastasis and patients’outcomes.Several functional assays implicated that NFE2L2 may act as a tumor suppressor in ESCC and that mutations in NFE2L2 probably impaired its tumor-suppressive function,or even conferred oncogenic activities.Additionally,we found that the NFE2L2 mutations were significantly associated with worse prognosis of ESCC.We also identified potential noncoding driver mutations including hotspot mutations in the promoter region of SLC35E2 that were correlated with worse survival.Approximately 5.9%and 15.2%of patients had high tumor mutation burden or actionable mutations,respectively,and may benefit from immunotherapy or targeted therapies.We found clinically relevant coding and noncoding genomic alterations and revealed three major subtypes that robustly predicted patients’outcomes.Collectively,we report the largest dataset of genomic profiling of ESCC useful for developing ESCC-specific biomarkers for diagnosis and treatment.Yongping Cui Hongyan Chen Ruibin Xi Heyang Cui Yahui Zhao Enwei Xu Ting Yan Xiaomei Lu Furong Huang Pengzhou Kong Yang Li Xiaolin Zhu Jiawei Wang Wenjie Zhu Jie Wang Yanchun Ma Yong Zhou Shiping Guo Ling Zhang Yiqian Liu Bin Wang Yanfeng Xi Ruifang Sun Xiao Yu Yuanfang Zhai Fang Wang Jian Yang Bin Yang Caixia Cheng Jing Liu Bin Song Hongyi Li Yi Wang Yingchun Zhang Xiaolong Cheng Qimin Zhan Yanhong Li Zhihua Liu-Show 2020Cell Research2020,30,10:19
8Exploring an Integrative Therapy for Treating COVID-19:A Randomized Controlled Trial显示文摘Objectives:To develop a new Chinese medicine(CM)-based drug and to evaluate its safety and effect for suppressing acute respiratory distress syndrome(ARDS)in COVID-19 patients.Methods:A putative ARDS-suppressing drug Keguan-1 was first developed and then evaluated by a randomized,controlled two-arm trial.The two arms of the trial consist of a control therapy(alpha interferon inhalation,50(x g twice daily;and lopinavir/ritonavir,400 and 100 mg twice daily,respectively)and a testing therapy(control therapy plus Keguan-119.4 g twice daily)by random number table at 1:1 ratio with 24 cases each group.After 2-week treatment,adverse events,time to fever resolution,ARDS development,and lung injury on newly diagnosed COVID-19 patients were assessed.Results:An analysis of the data from the first 30 participants showed that the control arm and the testing arm did not exhibit any significant differences in terms of adverse events.Based on this result,the study was expanded to include a total of 48 participants(24 cases each arm).The results show that compared with the control arm,the testing arm exhibited a significant improvement in time to fever resolution(P=0.035),and a significant reduction in the development of ARDS(P=0.048).Conclusions:Keguan-1-based integrative therapy was safe and superior to the standard therapy in suppressing the development of ARDS in COVID-19 patients.(Trial registration No.NCT 04251871 at www.clinicaltrials.gov).WANG Jia-bo WANG Zhong-xia JING Jing ZHAO Peng DONG Jing-hui ZHOU Yong-feng YANG Guang NIU Ming ZHAO Xu JIANG Tian-jun Bl Jing-feng XU Zhe ZHANG Ping WU Dan BAI Zhao-fang GUO Yu-ming YU Si-miao SUN Yong-qiang ZHANG Zi-teng ZHAN Xiao-yan LI Peng-yan DING Jin-biao ZHAO Peng-fei SONG Xue-ai TANG Jian-yuan HE Dong-chu CHEN Zhu QIN En-qiang WANG Rui-lin XIAO Xiao-he 2020Chinese Journal of Integrative Medicine2020,26,9:18
9Early Serum HBsAg Kinetics as Predictor of HBsAg Loss in Patients with HBeAg-Negative Chronic Hepatitis B after Treatment with Pegylated Interferonα-2a显示文摘Hepatitis B surface antigen(HBsAg)loss is an ideal treatment endpoint for patients with chronic hepatitis B(CHB).We investigated the predictive value of on-treatment HBsAg levels for HBsAg loss in hepatitis B e antigen(HBe Ag)-negative CHB patients who received 120-week PEG-IFNα-2a treatment.Serum HBV DNA,HBsAg,and anti-HBs levels were assayed at baseline and every 3 months during the treatment.Of 81 patients,12 achieved HBsAg loss,20 achieved HBsAg\100 IU/mL,and 49 maintained HBs Ag C 100 IU/mL.HBsAg loss rate was only 3.7%at 48 weeks,while it reached to 11.1%and 14.8%after treatment of 96 weeks and 120 weeks.The cutoff HBs Ag levels at 12 weeks predicting HBsAg loss at 96 weeks and 120 weeks of treatment were 400 IU/mL and 750 IU/mL,with AUC 0.725 and 0.722,positive predictive value(PPV)29.41%and 30.56%,and negative predictive value(NPV)93.75%and 97.78%,respectively.The cutoff HBsAg levels at 24 weeks predicting HBsAg loss at 96 weeks and 120 weeks of treatment were 174 IU/m L and 236 IU/mL respectively,with AUC 0.925 and 0.922,PPV 40.0%and 46.15%,and both NPV 100%.The predictive ability of the cutoff HBsAg levels at 24 weeks was better than that at 12 weeks for HBs Ag loss at either 96 or 120 weeks(χ~2=3.880,P=0.049 andχ~2=4.412,P=0.036).These results indicate that extended therapy is critical to HBsAg loss in HBe Ag-negative CHB patients during PEG-IFN treatment,and the HBsAg level at 24 weeks can be used to predict HBsAg loss during tailoring PEG-IFN therapy.Minghui Li Lu Zhang Yao Lu Qiqi Chen Huihui Lu Fangfang Sun Zhan Zeng Gang Wan Linqing Zhao Yao Xie 2021Virologica Sinica2021,36,2:15
10Antioxidant and Anti-inflammatory Capacity of Ferulic Acid Released from Wheat Bran by Solid-state Fermentation of Aspergillus niger显示文摘Objective A strain of Aspergillus niger(A. niger), capable of releasing bound phenolic acids from wheat bran, was isolated. This strain was identified by gene sequence identification. The antioxidant and anti-inflammatory capacity of ferulic acid released from wheat bran by this A. niger strain(FA-WB) were evaluated. Methods Molecular identification techniques based on PCR analysis of specific genomic sequences were conducted; antioxidant ability was examined using oxygen radical absorbance capacity(ORAC), cellular antioxidant activity(CAA) assays, and erythrocyte hemolysis assays. RAW264.7 cells were used as a model to detect anti-inflammatory activity. Results The filamentous fungal isolate was identified to be A. niger. ORAC and CAA assay showed that FA-WB had better antioxidant activity than that of the ferulic acid standard. The erythrocyte hemolysis assay results suggested that FA-WB could attenuate AAPH-induced oxidative stress through inhibition of reactive oxy gen species(ROS) generation. FA-WB could significantly restore the AAPH-induced increase in intracellular antioxidant enzyme activities to normal levels as well as inhibit the intracellular malondialdehyde formation. TNF-?, IL-6, and NO levels indicated that FA-WB can inhibit the inflammation induced by lipopolysaccharide(LPS). Conclusion Ferulic acid released from wheat bran by a new strain of A. niger had good anti-inflammatory activity and better antioxidant ability than standard ferulic acid.YIN Zhi Na WU Wen Jia SUN Chong Zhen LIU Hui Fan CHEN Wen Bo ZHAN Qi Ping LEI Zhuo Gui XIN Xuan MA Juan Juan YAO Kun MIN Tian ZHANG Meng Meng WU Hui 2019Biomedical and Environmental Sciences2019,32,1:14
11Analysis of risk factors for the interval time, number and pattern of hepatic metastases from gastric cancer after radical gastrectomy显示文摘AIM: To analyze the risk factors for interval time, number and pattern of hepatic metastases from gastric cancer after radical gastrectomy, and provide evidence for predicting and preventing hepatic metastasis from gastric cancer after radical gastrectomy. METHODS: A retrospective study of 87 patients with hepatic metastasis who underwent radical gastrectomy for gastric cancer from 1996 to 2001. The data was analyzed to evaluate significant risk factors for interval time, number and pattern of hepatic metastases originating from gastric cancer after radical gastrectomy. RESULTS: The size of gastric cancer and lymph node metastases were independently correlated with the interval time of hepatic metastases; the depth of invasion was independently correlated with the number of hepatic metastases; while the depth of invasion and Lauren classification were independently correlated with the pattern of hepatic metastases. CONCLUSION: We evaluated the interval time of hepatic metastases with the size of gastric cancer and lymph node metastases. The depth of invasion could be used to evaluate the number of hepatic metastases, while the depth of invasion and the Lauren classification could be used to evaluate the pattern of hepatic metastases in patients who underwent radical gastrectomy.Jing-Yu Deng Han Liang Dan Sun Hong-Jie Zhan Ru-Peng Zhang 2008World Journal of Gastroenterology2008,14,15:14
12Clinical characteristics and prognosis of community-acquired pneumonia in autoimmune disease-induced显示文摘BACKGROUND:Community-acquired pneumonia(CAP)in autoimmune diseases(AID)-induced immunocompromised host(ICH)had a high incidence and poor prognosis.However,only a few studies had determined the clinical characteristics of these patients.Our study was to explore the characteristics and predictors of mortality in CAP patients accompanied with AID-induced ICH.METHODS:From 2013 to 2018,a total of 94 CAP patients accompanied with AID-induced ICH,admitted to Emergency Department of Zhongshan Hospital,Fudan University,were enrolled in this study.Clinical data and the risk regression estimates of repeated predictors were evaluated by generalized estimating equations(GEEs)analysis.An open-cohort approach was used to classify patient's outcomes into the survival or non-survival group.RESULTS:The hospital mortality of patients with CAP occurring in AID-induced ICH was 60.64%.No significant differences were found with respect to clinical symptoms and lung images between survival and non-survival groups,while renal insufficiency and dysfunction of coagulation had higher proportions in non-survival patients(P<0.05).Both noninvasive ventilation(NIV)and invasive mechanical ventilation(IMV)were performed more frequently in non-survival group(P<0.05).By the multivariate GEEs analysis,the repeated measured longitudinal indices of neutrophilto-lymphocyte ratio(NLR)(odds ratio[OR]=1.055,95%confidence interval[95%CI]1.025–1.086),lactate dehydrogenase(LDH)(OR=1.004,95%CI 1.002–1.006)and serum creatinine(s Cr)(OR=1.018,95%CI 1.008–1.028),were associated with a higher risk of mortality.CONCLUSION:The CAP patients in AID-induced ICH had a high mortality.A significant relationship was demonstrated between the factors of NLR,LDH,s Cr and mortality risk in these patients.Zhong-shu Kuang Yi-lin Yang Wei Wei Jian-li Wang Xiang-yu Long Ke-yong Li Chao-yang Tong Zhan Sun Zhen-ju Song 2020World Journal of Emergency Medicine2020,11,3:12
13Changes in Extreme Maximum Temperature Events and Population Exposure in China under Global Warming Scenarios of 1.5 and 2.0°C: Analysis Using the Regional Climate Model COSMO-CLM显示文摘We used daily maximum temperature data(1986–2100) from the COSMO-CLM(COnsortium for Small-scale MOdeling in CLimate Mode) regional climate model and the population statistics for China in 2010 to determine the frequency, intensity, coverage, and population exposure of extreme maximum temperature events(EMTEs) with the intensity–area–duration method. Between 1986 and 2005(reference period), the frequency, intensity, and coverage of EMTEs are 1330–1680 times yr^(–1), 31.4–33.3°C, and 1.76–3.88 million km^2, respectively. The center of the most severe EMTEs is located in central China and 179.5–392.8 million people are exposed to EMTEs annually. Relative to 1986–2005, the frequency, intensity, and coverage of EMTEs increase by 1.13–6.84, 0.32–1.50, and15.98%–30.68%, respectively, under 1.5°C warming; under 2.0°C warming, the increases are 1.73–12.48, 0.64–2.76,and 31.96%–50.00%, respectively. It is possible that both the intensity and coverage of future EMTEs could exceed the most severe EMTEs currently observed. Two new centers of EMTEs are projected to develop under 1.5°C warming, one in North China and the other in Southwest China. Under 2.0°C warming, a fourth EMTE center is projected to develop in Northwest China. Under 1.5 and 2.0°C warming, population exposure is projected to increase by23.2%–39.2% and 26.6%–48%, respectively. From a regional perspective, population exposure is expected to increase most rapidly in Southwest China. A greater proportion of the population in North, Northeast, and Northwest China will be exposed to EMTEs under 2.0°C warming. The results show that a warming world will lead to increases in the intensity, frequency, and coverage of EMTEs. Warming of 2.0°C will lead to both more severe EMTEs and the exposure of more people to EMTEs. Given the probability of the increased occurrence of more severe EMTEs than in the past, it is vitally important to China that the global temperature increase is limited within 1.5°C.Mingjin ZHAN Xiucang LI Hemin SUN Jianqing ZHAI Tong JIANG Yanjun WANG 2018Journal of Meteorological Research2018,32,1:11
14Diversity of free-living nitrogen-fixing microorganisms in wastelands of copper mine tailings during the process of natural ecological restoration显示文摘Biological nitrogen fixing is an important source of nitrogen input in the natural ecological restoration of mine wastelands.The diversity of nifH genes in tailings samples under different plant communities in Yangshanchong and Tongguanshan wastelands in Tongling,was analyzed using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) approach.The nitrogen-fixing microorganism community in the upper layer of tailings of Tongguanshan wasteland discarded in 1980 showed higher Shannon-Wiener diversity index than that in Yangshanchong wasteland discarded in 1991.The diversity of nifH genes in Yangshanchong wasteland of copper mine tailings did not display a consistent successional tendency with development of plant communities during the process of natural ecological restoration.Phylogenetic analysis of 25 sequences of nifH gene fragments retrieved from the DGGE gels indicated that there were mainly two taxa of free-living nitrogen-fixing microorganisms,Proteobacteria and Cyanobacteria living in the wastelands investigated,most of which were unique and uncultured.Canonical correspondence analysis (CCA) based on the relationship between band patterns of DGGE profile and physico-chemical properties of tailings samples showed that the diversity of nifH genes in different tailing samples was mainly affected by loss of ignition,water content,pH and available Zn contents of wastelands.The dominant plant species and development period of plant communities by ameliorating pH,reducing the toxicity of heavy metals,increasing organic matter and water content affected the diversity and structure of the free-living nitrogenfixing microorganisms in wastelands of copper mine tailings.Jing Zhan Qingye Sun 2011Journal of Environmental Sciences2011,23,3:11
15Comparison of Long-term Outcomes in Patients with Premature Triple-vessel Coronary Disease Undergoing Three Different Treatment Strategies: A Prospective Cohort Study显示文摘Jing-Jing Xu Yin Zhang Lin Jiang Jian Tian Lei Song Zhan Gao Xin-Xing Feng Xue-Yan Zhao Yan-Yan Zhao Dong Wang Kai Sun Lian-Jun Xu Ru Liu Run-Lin Gao Bo Xu Lei Song Jin-Qing Yuan 2018Chinese Medical Journal2018,,1:10
16Significance of Aspergillus spp. isolation from lower respiratory tract samples for the diagnosis and prognosis of invasive pulmonary aspergillosis in chronic obstructive pulmonary disease显示文摘HE Hang-yong CHANG Shuo DING Lin SUN Bing LI Fang ZHAN Qing-yuan 2012Chinese Medical Journal2012,,17:10
17Less than 6 GHz resolution THz spectroscopy of water vapor显示文摘在许多的技术象石油工业一样回答的兆兆赫(THz ) 的申请要求高分辨率和多功能认识到不同材料的精确察觉。在这学习水里,在空气的蒸汽与 shortand 被扫描有不同扫描范围的长路径的 THz 分光计。在在长路径的系统的 THz 典型的线的半最大值的完整的宽度到达了不到 7 GHz 和那在突然完成了 5.5 GHz,显示水蒸汽的 THz 光谱学能被用来校准 THz 设备。有正确扫描范围的 THz 系统能是为有由于高分辨率的很类似的结构的固体,液体和气体的材料的鉴定的一种有希望的选择。研究证明多功能的 THz 测试能在许多领域里通过分辨率和采样空格的平衡被认识到,例如油气体工业。ZHAN HongLei SUN ShiNing ZHAO Kun LENG WenXiu BAO RiMa XIAO LiZhi ZHANG ZhenWei 2015Science China(Technological Sciences)2015,58,12:10
18Study on the stability and 3-dimensional character for natural convection in a rectangular cavity heated from below显示文摘Natural convection of air is numerically simulated in a 3-dimensional rectangular cavity heated from below using SIMPLE algorithm with a QUICK scheme.The results suggest that when all lateral walls are adiabatic,the fluid rolls occur along the long axis.When the Rayleigh number is smaller,the flow is of 2-dimensional character,and the rolls shapes are similar.The average Nusselt numbers in the central part of the cavity are similar.The average Nusselt numbers in the part near by the cavity are different.According to the comparison of 3-dimensional results with 2-dimensional results,the flow patterns and heat transfer in the central part of the cavity can be assumed as a 2-dimensional flow,While those in the part near by the cavity can not.With increasing Rayleigh number,the flow is 3-dimensional characteristic.The 3-dimensional result accords with the experimental result.When all lateral walls are adiabatic,the ten rolls occur along the long axis.But when lateral walls are heated or cooled,the rolls disappear along the long axis and two rolls occur along the short axis.The rotation direction of the rolls is reversed.When Rayleigh number is over some critical value,flow and heat transfer will be asymmetry,indicating unsteady oscillation occurs.By nonlinear analyses,it is shown that with increasing Rayleigh number,flow and heat transfer will change from steady state to unsteady state through HOPF bifurcation,and transition to chaos will occur through multi-periodical oscillation.ZHAN NaiYan1,2,XU PeiWei1,SUN ShiMei,YANG Mo2 & LIU Jun3 1 Scool of Municipal and Environmental Engineering,Jilin Institute of Architectural and Civil Engineering,Changchun 130021,China 2 College of Power Engineering,University of Shanghai for Science and Technology,Shanghiai 200093,China 3 College of Power Engineering,Jilin University,Changchun 130000,China 2010Science China(Technological Sciences)2010,53,6:9
19Recent Progress on Engineering Highly Efficient Porous Semiconductor Photocatalysts Derived from Metal–Organic Frameworks显示文摘Porous structures o er highly accessible surfaces and rich pores, which facilitate the exposure of numerous active sites for photocatalytic reactions, leading to excellent performances. Recently, metal–organic frameworks(MOFs) have been considered ideal precursors for well-designed semiconductors with porous structures and/or heterostructures, which have shown enhanced photocatalytic activities. In this review, we summarize the recent development of porous structures, such as metal oxides and metal sulfides, and their heterostructures, derived from MOF-based materials as catalysts for various light-driven energy-/environment-related reactions, including water splitting, CO_2 reduction, organic redox reaction, and pollution degradation. A summary and outlook section is also included.Wenwen Zhan Liming Sun Xiguang Han 2019Nano-Micro Letters2019,11,1:9
20Estimating potential yield of wheat production in China based on cross-scale data-model fusion显示文摘到环境的 agro 生态的系统的反应包括单个庄稼的生理的过程的反应和庄稼社区的改编到环境。在单个规模水平的观察和模拟不能充分解释上述过程。开发跨规模的 agro 生态的模型并且越过不同规模学习 agro 生态的过程的相互作用是必要的。在这研究,二典型 agroecological 当模特儿,为 Agrotechnology 转移(DSSAT ) 模型的决定支持系统和 Agroecological 地区(AEZ ) 当模特儿,被采用,并且为有效跨规模的数据模型熔化的一个框架被建议并且说明。来自 36 个不同农业观察车站和历史的气象站(1962-1999 ) 的国家观察数据被采用估计平均庄稼生产率。二个模型的评价的比较是一致的,它将显示可能性 ofcross 规模庄稼模型熔化[出版摘要]Zhan TIAN Honglin ZHONG Runhe SHI Laixiang SUN Gunther FISCHER Zhuoran LIANG 2012Frontiers of Earth Science2012,6,4:8
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