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89篇 您的检索式:作者名="Lang Cheng"
    题名 作者 年代 出处 被引量
1Mushroom Poisoning Outbreaks-China,2020显示文摘What is already known about this topic?Acute liver failure,rhabdomyolysis,acute renal failure,and hemolysis caused by poisonous mushrooms are the most important mushroom poisoning threats to the Chinese population.The most notorious lethal mushrooms are the species from genera Amanita,Lepiota,and Galerina that cause acute liver failure,and Russula subnigricans that leads to rhabdomyolysis.What is added by this report?In 2020,the total number of investigations reached 676,involving an estimated 102 species of poisonous mushrooms,24 of which were newly recorded in China.Gyromitra venenata was newly discovered in incidents in Yunnan and Guizhou provinces and were the first reported poisonings due to gyromitrins in China since 2000.The rare poisoning Shiitake mushroom dermatitis was recorded in China.Hemolysis poisoning caused by Paxillus involutus was recorded for the second time since the beginning of the new century,resulting in one death in Inner Mongolia Autonomous Region.What are the implications for public health practice?Promoting knowledge about safe consumption of mushrooms is essential to reduce mushroom poisonings.It is not wise to collect and eat wild mushrooms.For southwestern provinces such as Yunnan,especially,caution must be exercised with unfamiliar mushroom species.Haijiao Li Hongshun Zhang Yizhe Zhang Jing Zhou Yu Yin Qian He Shaofeng Jiang Peibin Ma Yutao Zhang Ke Wen Yuan Yuan Nan Lang Bowen Cheng Junjia Lu Chengye Sun 2021China CDC weekly2021,3,3:13
2Assessing the Effectiveness of a Cervical Cancer Screening Program in a Hospital-based Study显示文摘This study compared HPV testing and liquid-based cytology(LCT)as performance indicators for cervical cancer screening in a hospital-based study.A total of 61,193 outpatients were screened initially by LCT.Samples with screening results showing atypical squamous cells of undetermined significance(ASC-US)or worse were referred for colposcopy,and someYANG Yi LANG Jing He WANG You Fang CHENG Xue Mei CAI Yu Pin LI Hui ZHU Bao Li ZHANG Rui Fen 2015Biomedical and Environmental Sciences2015,28,1:10
3New Insight into the Development of Oxygen Carrier Materials for Chemical Looping Systems显示文摘化学链燃烧(CLC)和化学链重整(CLR)是通过循环氧化还原反应,清洁高效地将烃类转化为动力、燃料和化学品的创新技术。金属氧化物材料在化学链氧化还原过程中起着至关重要的作用。在还原过程中,氧载体为烃类的转化和产物合成提供所需的氧离子量。在氧化步骤中,耗尽的金属氧化物氧载体从空气中补充分子氧,同时释放热量。近年来,用于各种化学链应用的氧载体材料已经取得了较大进展。在这些金属氧化物材料中,铁基氧载体由于其高携氧能力、显著的成本效益,以及化学链反应在实际应用方面的多功能性而具有吸引力。它们的反应性也可以通过结构设计和改性进一步得到增强。本文综述了氧载体材料的发展及其在这些材料上的烃类转化机制的最新进展。这些进展将有助于氧载体材料的开发,以实现更有效的化学链技术应用。Zhuo Cheng Lang Qin Jonathan A. Fan Liang-Shih Fan 2018Engineering2018,4,3:7
4An-Luo-Hua-Xian Pill Improves the Regression of Liver Fibrosis in Chronic Hepatitis B Patients Treated with Entecavir显示文摘Background and Aims:Chronic hepatitis B(CHB)can cause liver fibrosis and lead to cirrhosis and cancer.As the effectiveness of antiviral therapy to reverse liver fibrosis is limited,We aimed to evaluate the effect of An-Luo-Hua-Xian pill(ALHX)on fibrosis regression in CHB patients treated with entecavir(ETV).Methods:Treatment-naïve patients with CHB were randomly treated with ETV alone or combined with ALHX(ETV+ALHX)between October 1,2013 and December 31,2020.Demographic,laboratory,and liver histology data before and after 78 weeks of treatment were collected.The Ishak fibrosis score(F)was used and fibrosis regression required a decrease in F of≥1 after treatment.Results:A total of 780 patients were enrolled,and 394 with a second liver biopsy after treatment were included in the per-protocol population,132 in ETV group and 262 in ETV+ALHX group.After 78 weeks of treatment,the fibrosis regression rate in the ETV+ALHX group was significantly higher than that of the ETV group at baseline F≥3 patients:124/211(58.8%)vs.45/98(45.9%),p=0.035.The percentage of patients with a decreased liver stiffness measurement(LSM)was higher in the ETV+ALHX group:156/211(73.9%)vs.62/98(63.%),p=0.056.Logistic regression analysis showed that ETV combined with ALHX was associated with fibrosis regression[odds ratio(OR)=1.94,p=0.018],and a family history of hepatocellular carcinoma was on the contrary.(OR=0.41,p=0.031).Conclusions:ETV combined with ALHX increased liver fibrosis regression in CHB patients.Yi-Qi Liu Chi Zhang Jia-Wen Li Li-Hua Cao Zhan-Qing Zhang Wei-Feng Zhao Qing-Hua Shang Da-Zhi Zhang An-Lin Ma Qing Xie Hong-Lian Gui Guo Zhang Ying-Xia Liu Jia Shang Shi-Bin Xie Jun Li Xu-Qing Zhang Zhi-Qiang Zou Yu-Ping Chen Zong Zhang Ming-Xiang Zhang Jun Cheng Fu-Chun Zhang Li-Hua Huang Jia-Bin Li Qing-Hua Meng Hai-Bin Yu Yu-Qiang Mi Yan-Zhong Peng Zhi-Jin Wang Li-Ming Chen Fan-Ping Meng Wan-Hua Ren Lang Bai Yi-Lan Zeng Rong Fan Xian-Zhi Lou Wei-Feng Liang Hui Liu Hui Zhuang Hong Zhao Gui-Qiang Wang 2023Journal of Clinical and Translational Hepatology2023,11,2:7
5Mushroom Poisoning Outbreaks — China, 2021显示文摘Summary What is already known about this topic?Mushroom poisoning is one of the most serious food safety issues in China.Most poisoning incidents resulted from eating mushrooms causing gastroenteritis and psycho-neurological disorder from which patients usually could fully recover.Most deaths resulted from species causing acute liver failure and rhabdomyolysis,and the remaining deaths were attributed to acute renal failure and hemolysis.What is added by this report?In 2021,the total number of investigations was 327 from 25 provincial-level administrative divisions,involving 923 patients and 20 deaths,and the overall mortality was 2.17%.Overall,74 poisonous mushrooms causing 6 different clinical syndromes were successfully identified,15 of which were newly recorded in China as poisonous mushrooms.What are the implications for public health practice?Considering the potential huge risks for collecting and eating wild mushrooms,we strongly advise not collecting and eating unfamiliar wild mushrooms.Promoting knowledge about poisonous mushrooms is essential and urgent to reduce mushroom poisonings.Precise species identification timely after mushroom poisoning is important for appropriate diagnosis and treatment.Many deaths were ascribed to delayed hospitalization.Haijiao Li Hongshun Zhang Yizhe Zhang Jing Zhou Yu Yin Qian He Shaofeng Jiang Peibin Ma Yutao Zhang Yuan Yuan Nan Lang Bowen Cheng Mei Wang Chengye Sun 2022China CDC weekly2022,4,3:7
6On-board measurements of gaseous pollutant emission characteristics under real driving conditions from light-duty diesel vehicles in Chinese cities显示文摘A total of 15 light-duty diesel vehicles(LDDVs) were tested with the goal of understanding the emission factors of real-world vehicles by conducting on-board emission measurements. The emission characteristics of hydrocarbons(HC) and nitrogen oxides(NOx) at different speeds, chemical species profiles and ozone formation potential(OFP) of volatile organic compounds(VOCs) emitted from diesel vehicles with different emission standards were analyzed. The results demonstrated that emission reductions of HC and NOxhad been achieved as the control technology became more rigorous from Stage I to Stage IV. It was also found that the HC and NOxemissions and percentage of O2 dropped with the increase of speed, while the percentage of CO2 increased. The abundance of alkanes was significantly higher in diesel vehicle emissions, approximately accounting for 41.1%–45.2%, followed by aromatics and alkenes. The most abundant species were propene,ethane, n-decane, n-undecane, and n-dodecane. The maximum incremental reactivity(MIR)method was adopted to evaluate the contributions of individual VOCs to OFP. The results indicated that the largest contributors to O3 production were alkenes and aromatics, which accounted for 87.7%–91.5%. Propene, ethene, 1,2,4-trimethylbenzene, 1-butene, and1,2,3-trimethylbenzene were the top five VOC species based on their OFP, and accounted for 54.0%-64.8% of the total OFP. The threshold dilution factor was applied to analyze the possibility of VOC stench pollution. The majority of stench components emitted from vehicle exhaust were aromatics, especially p-diethylbenzene, propylbenzene, m-ethyltoluene, and p-ethyltoluene.Gang Wang Shuiyuan Cheng Jianlei Lang Song Li Liang Tian 2016Journal of Environmental Sciences2016,28,8:6
7Characterization of aircraft emissions and air quality impacts of an international airport显示文摘Beijing Capital International Airport(ZBAA) is the world's second busiest airport. In this study, the emissions of air pollutants from aircraft and other sources at ZBAA in 2015 were estimated using an improved method, which considered the mixing layer height calculated based on aircraft meteorological data relay(AMDAR), instead of using the height(915 m)recommended by ICAO. The yearly emissions of NO_x, CO, VOCs, SO_2, and PM_(2.5) at the airport were 8.76 × 10~3, 4.43 × 10~3, 5.43 × 10~2, 4.80 × 10~2, and 1.49 × 10~2 ton/year, respectively. The spatial–temporal distribution of aircraft emissions was systematically analyzed to understand the emission characteristics of aircraft. The results indicated that NOxwas mainly emitted during the take-off and climb phases, accounting for 20.5% and 55.5% of the total emissions. CO and HC were mainly emitted during the taxi phase, accounting for 91.6%and 92.2% of the total emissions. Because the mixing layer height was high in summer, the emissions of aircraft were at the highest level throughout the year. Based on the detailed emissions inventory, four seasons simulation using WRF-CMAQ model was performed over the domain surrounding the airport. The results indicated that the contribution to PM_(2.5) was relatively high in winter; the average impact was about 1.15 μg/m^3 within a radius of1 km around the airport. Meanwhile, the near surroundings and southwest areas of the airport are the most sensitive to PM_(2.5).Xiaowen Yang Shuiyuan Cheng Jianlei Lang Ran Xu Zhe Lv 2018Journal of Environmental Sciences2018,30,10:5
8Rational development of a human antibody cocktail that deploys multiple functions to confer Pan-SARS-CoVs protection显示文摘Structural principles underlying the composition and synergistic mechanisms of protective monoclonal antibody cocktails are poorly defined.Here,we exploited antibody cooperativity to develop a therapeutic antibody cocktail against SARS-CoV-2.On the basis of our previously identified humanized cross-neutralizing antibody H014,we systematically an a lyzed a fully human n aive antibody library and rationally identified a potent neutralizing antibody partner,P17,which confers effective protection in animal model.Cryo-EM studies dissected the nature of the P17 epitope,which is SARS-CoV-2 specific and distinctly different from that of HOI4.High-resolution structure of the SARS-CoV-2 spike in complex with HOM and P17,together with functional investigations revealed that in a two-antibody cocktail,synergistic neutralization was achieved by S1 shielding and conformational locking,thereby blocking receptor attachment and viral membrane fusion,conferring high potency as well as robustness against viral mutation escape.Furthermore,cluster analysis identified a hypothetical 3rd antibody partner for further reinforcing the cocktail as pan-SARS-CoVs therapeutics.Hangping Yao Yao Sun Yong-Qiang Deng Nan Wang Yongcong Tan Na-Na Zhang Xiao-Feng Li Chao Kong Yan-Peng Xuc Qi Chen Tian-Shu Cao Hui Zhao Xintian Yan Lei Cao Zhe Lv Dandan Zhu Rui Feng Nanping Wu Wenhai Zhang Yuhao Hu Keda Chen Rong-Rong Zhang Qingyu Lv Shihui Sun Yunhua Zhou Run Yan Guan Yang Xinglu Chanjuan Liu Xiangyun Lu Linfang Cheng Hongying Qiu Xing-Yao Huang Tianhao Weng Danrong Shi Weidong Jiang Junbin Shao Lei Wang Jie Zhang Tao Jiang Guojun Lang Cheng-Feng Qinc Lanjuan Li Xiangxi Wang 2021Cell Research2021,31,1:5
9Mushroom Poisoning Outbreaks -China, 2022显示文摘Mushroom poisoning has become a serious food safety issue in China.With the support of the government,over the past decade,China has gradually established a mushroom poisoning prevention and treatment system involving experts in disease prevention and control,clinical diagnosis and treatment,fungal classification,and basic medicine(1–3).Haijiao Li Yizhe Zhang Hongshun Zhang Jing Zhou Jiaqi Liang Yu Yin Qian He Shaofeng Jiang Yutao Zhang Yuan Yuan Nan Lang Bowen Cheng Mei Wang Chengye Sun 2023China CDC weekly2023,5,3:4
10LIN28 coordinately promotes nucleolar/ribosomal functions and represses the 2C-like transcriptional program in pluripotent stem cells显示文摘LIN28 is an RNA binding protein with important roles in early embryo development,stem cell differentiation/re-programming,tumorigenesis and metabolism.Previous studies have focused mainly on its role in the cytosol where it interacts with Let-7 microRNA precursors or mRNAs,and few have addressed LIN28's role within the nucleus.Here,we show that LIN28 displays dynamic temporal and spatial expression during murine embryo development.Maternal LIN28 expression drops upon exit from the 2-cell stage,and zygotic LIN28 protein is induced at the forming nucleolus during 4-cell to blas-tocyst stage development,to become dominantly expressed in the cytosol after implantation.In cultured pluripotent stem cells(PSCs),loss of LIN28 led to nucleolar stress and activation of a 2-cell/4-cell-like transcriptional program characterized by the expression of endogenous retrovirus genes.Mechanistically,LIN28 binds to small nucleolar RNAs and rRNA to maintain nucleolar integrity,and its loss leads to nucleolar phase separation defects,ribosomal stress and activation of P53 which in turn binds to and activates 2C transcription factor Dux.LIN28 also resides in a complex containing the nucleolar factor Nucleolin(NCL)and the transcrip-tional repressor TRIM28,and LIN28 loss leads to reduced occupancy of the NCL/TRIM28 complex on the Dux and rDNA loci,and thus de-repressed Dux and reduced rRNA expression.Lin28 knockout cells with nucleolar stress are more likely to assume a slowly cycling,translationally inert and anabolically inactive state,which is a part of previously unappreciated 2C-like transcriptional program.These findings elucidate novel roles for nucleolar LIN28 in PSCs,and a new mechanism linking 2C program and nucleolar functions in PSCs and early embryo development.Zhen Sun Hua Yu Jing Zhao Tianyu Tan Hongru Pan Yuqing Zhu Lang Chen Cheng Zhang Li Zhang Anhua Lei Yuyan Xu Xianju Bi Xin Huang Bo Gao Longfei Wang Cristina Correia Ming Chen Qiming Sun Yu Feng Li Shen Hao Wu Jianlong Wang Xiaohua Shen George Q.Daley Hu Li Jin Zhang 2022Protein & Cell2022,13,7:4
11Urban-rural disparities in mild cognitive impairment and its functional subtypes among community- dwelling older residents in central China显示文摘background Substantial variations in the prevalence of mild cognitive impairment(MCI)and its subtypes have been reported,although mostly in geographically defined developed countries and regions.Less is known about MCI and its subtypes in rural areas of less developed central China.Aims The study aimed to compare the prevalence of MCI and its subtypes in residents aged 65 years or older in urban and rural areas of Hubei Province,China.Methods Participants aged 65 years or older were recruited between 2018 and 2019.Inperson structured interviews and clinical and neuropsychological assessments were performed at city health community centres and township hospitals.results Among 2644 participants without dementia,735 had MCI,resulting in a prevalence of 27.8%for total MCI,20.9%for amnestic MCI(aMCI)and 6.9%for non-amnestic MCI(naMCI).The prevalence of MCI in urban and rural areas was 20.2%and 44.1%,respectively.After adjusting for demographic factors,the prevalence of total MCI,aMCI and naMCI differed significantly between rural and urban areas(adjusted odds ratio(OR)2.10,1.44 and 3.76,respectively).Subgroup analysis revealed an association between rural socioeconomic and lifestyle disadvantage and MCI and its subtypes.Conclusions Our findings suggest that the prevalence of MCI among urban residents in central China is consistent with that in other metropolis areas,such as Shanghai,but the prevalence in rural areas is twice that in urban areas.Prospective studies and dementia prevention in China should focus on rural areas.Dan Liu Lin Li Lina An Guirong Cheng Cong Chen Mingjun Zou Bo Zhang Xuguang Gan Lang Xu Yangming Ou Qingming Wu Ru Wang Yan Zeng 2021General Psychiatry2021,34,5:3
12Clinical observation on pericardial effusion in patients with lung cancer treated by intrapericardial catheterization and infusion of highly agglutinative staphylococcin and cisplatin显示文摘Objective: To evaluate the therapeutic efficacy of injecting highly agglutinative staphylococcin (HASL) and cisplatin into pericardial cavity of lung cancer patients with pericardial effusion. Methods: 81 patients were randomized into two groups: 45 in the experimental group (HASL and Cisplatin) and 36 in the control group (Cisplatin). At first pericardial effusion was drained out from a intrapericardial catheter and then different drugs were infused, respectively. 24 h after perfusion the draining continued again until drainage quantity was less than 30 mL every day. The draining lasted 10–15 days. Results: The response rate was 91.1% for the experimental group and 80.6% for the control group. There was no significant difference between the two groups (P>0.05). The complete remission was 77.8% for the experimental group and 52.8% for the control group, which was statistically significant difference (P<0.05). The adverse effects were myelosuppression and nausea and vomiting, which were 35.6% and 40.0% in the experimental group and 72.2% and 66.7% in the control group, respectively (P<0.01, P<0.05). Conclusion: Inject- ing HASL and cisplatin into pericardial cavity may be a better way to control pericardial effusion of lung cancer.Qi'an Jiang Yide Zhou Gui'e Cheng Fangyun Gong Shuyan Zhang Fengping Lang Meihong Zhao 2006The Chinese-German Journal of Clinical Oncology2006,5,5:3
13Simultaneous determination of active ingredients in blueberry wine by CE-AD显示文摘基于结合的毛状的电气泳动,安培计的察觉(CE 广告) 第一次为 kaempferol, ferulic 酸,香子兰的酸,咖啡的酸,法国的酸和在蓝莓酒酸的 protocatechuic 的分离和决心被开发了的一个方法。为了得到分离,工作电极潜力的效果, pH 价值和运用缓冲区,分离电压和注射的集中的最佳条件,在 CE 广告上预定被调查。在最佳条件下面, analytes 能在 pH 在 Na2B4O7KH2PO4 缓冲区被分开 7.8 在 18 min 以内。300 m 直径碳磁盘电极在 +0.95 V 有好当前的回答(对 SCE ) 为所有 analytes。回答与在有察觉限制的三个数量级上的集中是线性的(S/N = 3 ) 在 108 g/mL,为 analytes 和恢复的大小在 95.8106.7% 的范围。方法能成功地与令人满意的结果被用于真实样品的分析因此由水果酒制片人的质量控制部门为使用推荐了。Zi Cheng Li Lang Zhu Chi Jin Kun Zhu Yin Yan Zhang Qing Jiang Wang Pin Gang He Yu Zhi Fang 2011Chinese Chemical Letters2011,22,10:2
14Selective Hydrogenation of Butyne-1,4-diol to Butane-1,4-diol over Ni/Al_2O_3-SiO_2 Catalysts显示文摘Ni/Al_2O_3-SiO_2 catalysts were synthesized via one-step method employing SiO_2 as an additive for the selective hydrogenation of butyne-1,4-diol(B_3D) to butane-1,4-diol(B1D). The prepared catalysts were evaluated by a series of characterization techniques including BET, XRD, SEM, EDX-mapping, TEM, H_2-TPR, XPS, NH_3-TPD and Py-FTIR. Compared to Ni/Al_2O_3 catalyst, the SiO_2-doped samples exhibited better B_3D conversion. SiO_2 could help to form a strong interaction between NiO with the support, which inhibited Ni agglomeration at high temperature, improved the Ni dispersion, and enhanced the hydrogenation activity. B_1D selectivity was mainly influenced by the quantity of Lewis acid sites in addition to the Ni dispersion. The catalyst with a silica loading of 6.4% demonstrated an excellent selectivity of 75.18%(by 13% higher than the contrastive Ni/Al_2O_3 catalyst), which was attributed to the larger amount of Lewis acid sites and the moderate interaction between NiO with the support, which could facilitate the nickel dispersion on a preferable surface area of 176.3 m^2/g of support.Fang Jie Zhuang Changjian Meng Jipeng Cheng Lang Lu Jiangyin 2018China Petroleum Processing & Petrochemical Technology2018,20,4:2
15Mannose metabolism normalizes gut homeostasis by blocking the TNF-α-mediated proinflammatory circuit显示文摘Mannose is a naturally occurring sugar widely consumed in the daily diet;however,mechanistic insights into how mannose metabolism affects intestinal inflammation remain lacking.Herein,we reported that mannose supplementation ameliorated colitis development and promoted colitis recovery.Macrophage-secreted inflammatory cytokines,particularly TNF-α,induced pathological endoplasmic reticulum stress(ERS)in intestinal epithelial cells(IECs),which was prevented by mannose via normalization of protein N-glycosylation.By preserving epithelial integrity,mannose reduced the inflammatory activation of colonic macrophages.On the other hand,mannose directly suppressed macrophage TNF-αproduction translationally by reducing the glyceraldehyde 3-phosphate level,thus promoting GAPDH binding to TNF-αmRNA.Additionally,we found dysregulated mannose metabolism in the colonic mucosa of patients with inflammatory bowel disease.Finally,we revealed that activating PMM2 activity with epalrestat,a clinically approved drug for the treatment of diabetic neuropathy,elicited further sensitization to the therapeutic effect of mannose.Therefore,mannose metabolism prevents TNF-α-mediated pathogenic crosstalk between IECs and intestinal macrophages,thereby normalizing aberrant immunometabolism in the gut.Peng Xiao Ziwei Hu Jiaheng Lang Tianyuan Pan Randall Tyler Mertens Huilun Zhang Ke Guo Manlu Shen Hongqiang Cheng Xue Zhang Qian Cao Yuehai Ke 2023Cellular & Molecular Immunology2023,20,2:2
16Hisingerite in Trachydacite from Tarim:Implications for Voluminous Felsic Rocks in Transitional Large Igneous Province显示文摘Unlike the typical large igneous provinces(LIPs) that are dominated by mafic-ultramafic rocks, the Tarim large igneous province(TLIP) is characterized by a high proportion of felsic rocks, based on which the TLIP is classified as a transitional LIP. In this study, we focus on the trachydacite from the TLIP in which we report the characteristics of hisingerite employing a variety of techniques such as EMPA, LA-ICPMS, CCD single crystal diffraction, and bulk-rock oxygen isotopes. The hisingerite in this rock is associated with plagioclase, amphibole, apatite and ilmenite. These minerals occur as aggregates of fine curled fibers in micron-scale and display heavy rare earth elements(HREE) enriched signature with significant negative Eu anomalies. In the primitive mantle-normalized trace element spider diagrams, they show pronounced Th and U spikes and Nb, Zr, Hf troughs. Petrological observation and mineralogical study reveal a closely genetic relationship between hisingerite and amphibole, indicating that the hisingerite might have been derived from the breakdown of amphibole during the magma ascent. The formation of hisingerite requires excess water from the surrounding melts, suggesting a hydrous parental magma. The hisingerite and amphibole assign a hydrous crustal source for the rock, and extensive crustal melting accounts for the voluminous felsic rocks in the TLIP.Mingde Lang Zhiguo Cheng Zhaochong Zhang Fangyue Wang Qian Mao M.Santosh 2020Journal of Earth Science2020,31,5:2
17A framework for investigating the air quality variation characteristics based on the monitoring data: Case study for Beijing during 2013–2016显示文摘In this study, an analysis framework based on the regular monitoring data was proposed for investigating the annual/inter-annual air quality variation and the contributions from different factors(i.e., seasons, pollution periods and airflow directions), through a case study in Beijing from 2013 to 2016. The results showed that the annual mean concentrations(MC) of PM_(2.5), SO_2, NO_2 and CO had decreased with annual mean ratios of 7.5%, 28.6%, 4.6%and 15.5% from 2013 to 2016, respectively. Among seasons, the MC in winter contributed the largest fractions(25.8%~46.4%) to the annual MC, and the change of MC in summer contributed most to the inter-annual MC variation(IMCV) of PM_(2.5) and NO2. For different pollution periods, gradually increase of frequency of S-1(PM_(2.5), 0~ 75 μg/m^3) made S-1 become the largest contributor(28.8%) to the MC of PM_(2.5) in 2016, it had a negative contribution(-13.1%) to the IMCV of PM_(2.5); obvious decreases of frequencies of heavily polluted and severely polluted dominated(44.7% and 39.5%) the IMCV of PM_(2.5). For different airflow directions, the MC of pollutants under the south airflow had the most significant decrease(22.5%~62.5%), and those decrease contributed most to the IMCV of PM_(2.5)(143.3%),SO2(72.0%), NO_2(55.5%) and CO(190.3%); the west airflow had negative influences to the IMCV of PM_(2.5), NO_2 and CO. The framework is helpful for further analysis and utilization of the large amounts of monitoring data; and the analysis results can provide scientific supports for the formulation or adjustment of further air pollution mitigation policy.Jixian Cui Jianlei Lang Tian Chen Shushuai Mao Shuiyuan Cheng Zhanshan Wang Nianliang Cheng 2019Journal of Environmental Sciences2019,31,7:2
18PC4 serves as a negative regulator of skin wound healing in mice显示文摘Background:Human positive cofactor 4(PC4)was initially characterized as a multifunctional transcriptional cofactor,but its role in skin wound healing is still unclear.The purpose of this study was to explore the role of PC4 in skin wound healing through PC4 knock-in mouse model.Methods:A PC4 knock-in mouse model(PC4^(+/+))with a dorsal full-thickness wound was used to investigate the biological functions of PC4 in skin wound healing.Quantitative PCR,Western blot analysis and immunohistochemistry were performed to evaluate the expression of PC4;Sirius red staining and immunofluorescence were performed to explore the change of collagen deposition and angiogenesis.Proliferation and apoptosis were detected using Ki67 staining and TUNEL assay.Primary dermal fibroblasts were isolated from mouse skin to perform cell scratch experiments,cck-8 assay and colony formation assay.Results:The PC4^(+/+)mice were fertile and did not display overt abnormalities but showed an obvious delay in cutaneous healing of dorsal skin.Histological staining showed insufficient re-epithelialization,decreased angiogenesis and collagen deposition,increased apoptosis and decreased cell proliferation in PC4^(+/+)skin.Our data also showed decreased migration rate and proliferation ability in cultured primary fibroblasts from PC4^(+/+)mice in vitro.Conclusions:This study suggests that PC4 might serve as a negative regulator of skin wound healing in mice.Fengying Liao Long Chen Peng Luo Zhongyong Jiang Zelin Chen Ziwen Wang Chi Zhang Yu Wang JintaoHe Qing Wang Yawei Wang Lang Liu Yu Huang Huilan Wang Qingzhi Jiang Min Luo YiboGan Yunsheng Liu Yang Wang Jie Wu Wentao Xie Zhuo Cheng Yali Dai Jialun Li Zujuan Liu Fan Yang Chunmeng Shi 2020Burns & Trauma2020,8,1:1
19An Efficient Authentication Scheme based on One-Way Key Chain for Sensor Network显示文摘Lang Weimin Cheng Wenqing Yang Zongkai Tan Yunmeng 2004Journal of Harbin Institute of Technology2004,11,4:1
20A randomized, multi-central, controlled study of patients with hepatitis B e antigen-positive chronic hepatitis B treated by adefovir dipivoxil or adefovir dipivoxil plus bicyclol显示文摘Wen Xie Guangfeng Shi Hongfei Zhang Guiming Zhao Zujiang Yu Zhenwei Lang Hong Zhao Jie Yan Jun Cheng 2012Hepatology International2012,,2:1
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