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227篇 您的检索式:作者名="Zhen Xi"
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1Exogenous plant MIR168a specifically targets mammalian LDLRAPI: evidence of cross-kingdom regulation by microRNA显示文摘Lin Zhang Dongxia Hou Xi Chen Donghai Li Lingyun Zhu Yuj ing Zhang Jing Li Zhen Bian Xiangying Liang Xing Cai Yuan Yin Cheng Wang Tianfu Zhang Dihan Zhu Dianmu Zhang Jie Xu Qun Chen Yi Ba Jing Liu Qiang Wang Jianqun Chen Jin Wang Meng Wang Qipeng Zhang Junfeng Zhang Ke Zen Chen-Yu Zhang 2012Cell Research2012,22,1:155
2Honeysuckle-encoded atypical microRNA2911 directly Largets influenza A viruses显示文摘Zhen Zhou Xihan Li Jinxiong Liu Lei Dong Qun Chen Jialing Liu Huihui Kongt Qianyi Zhang Xian Qi Dongxia Hou Lin Zhang Guoquan Zhang Yuchen Liu Yujing Zhang Jing Li Jin Wang Xi Chen Hua Wang Junfeng Zhang Hualan Chen Ke Zen Chen-Yu Zhang 2015Cell Research2015,25,1:104
3Prevalence of Thyroid Nodules and Its Relationship with Iodine Status in Shanghai:a Population-based Study显示文摘Objective This study was designed to evaluate the prevalence of thyroid nodules(TNs) and its relationship with urine iodine concentrations(UICs) after the regional rapid economic growth and lifestyle changes. Methods A cross-sectional survey was conducted in the general population aged 15-69 years. A questionnaire regarding general and personal characteristics and relevant information was administered. Ultrasonography of the thyroid was performed, and serum triiodothyronine(T3), tetraiodothyronine(T4), serum thyroid stimulating hormone(TSH), free triiodothyronine(FT3), free tetraiodothyronine(FT4), thyroglobulin antibody(Tg Ab), thyroid peroxidase antibody(TPOAb), and TSH receptor antibody(TRAb) levels were measured for each individual subject. Results The prevalence rates of TNs in the whole population, females and males were 27.76%, 34.04%, and 21.60%, respectively. The prevalence of multiple nodules increased with age, whereas the prevalence peaks differed between males and females. The median UICs in the whole population and females with non-TNs were higher than those of subjects with TNs(P=0.0035, P=0.0068). The median UICs in subjects with a single TN were higher than those in subjects with multiple TNs(P=0.0164, P=0.0127). The result showed a U-shaped curve relationship between UIC and prevalence of TNs. The prevalence of TNs was the lowest when the UIC was 140-400 μg/L. Conclusion The prevalence of TNs was nearly 30% and increased with age. The relationship between UIC and prevalence of TNs is U-shaped, with an increase in risk when the UIC was <140 μg/L and >400 μg/L. Very low or high UIC levels need attention and correction.SONG Jun ZOU Shu Rong GUO Chang Yi ZANG Jia Jie ZHU Zhen Ni MI Ming HUANG Cui Hua YU Hui Ting LU Xi RUAN Ye WU Fan 2016Biomedical and Environmental Sciences2016,29,6:25
4Effects of Short-Term Forest Bathing on Human Health in a Broad-Leaved Evergreen Forest in Zhejiang Province,China显示文摘Objective To investigate the effects of short-term forest bathing on human health.Methods Twenty healthy male university students participated as subjects and were randomly divided into two groups of 10.One group was sent on a two-night trip to a broad-leaved evergreen forest,and the other was sent to a city area.Serum cytokine levels reflecting inflammatory and stress response,indicators reflecting oxidative stress,the distribution of leukocyte subsets,and plasma endothelin-1 (ET-1) concentrations were measured before and after the experiment to evaluate the positive health effects of forest environments.A profile of mood states (POMS) evaluation was used to assess changes in mood states.Results No significant differences in the baseline values of the indicators were observed between the two groups before the experiment.Subjects exposed to the forest environment showed reduced oxidative stress and pro-inflammatory level,as evidenced by decreased malondialdehyde,interleukin-6,and tumor necrosis factor α levels compared with the urban group.Serum cortisol levels were also lower than in the urban group.Notably,the concentration of plasma ET-1 was much lower in subjects exposed to the forest environment.The POMS evaluation showed that after exposure to the forest environment,subjects had lower scores in the negative subscales,and the score for vigor was increased.Conclusion Forest bathing is beneficial to human health,perhaps through preventive effects related to several pathological factors.MAO Gen Xiang LAN Xiao Guang CAO Yong Bao CHEN Zhuo Mei HE Zhi Huat LV Yuan Dong WANG Ya Zhen HU Xi Lian WANG Guo Fu YAN Jing 2012Biomedical and Environmental Sciences2012,25,3:20
5PROPULSIVE PERFORMANCE AND VORTEX SHEDDING OF A FOIL IN FLAPPING MOTION显示文摘The propulsive performance and vortex shedding of oscillating foil, which mimics biological locomotion, were numerically investigated. The objectives of this study were to deal with unsteady force, in particular thrust force, exerted on the foil in pitching and plunging motions, and to explore the relation of the propulsive performance with vortex structures near the foil and vortex shedding in the near wake. The two dimensional incompressible Navier Stokes equations in the vorticity and stream function formulation were solved by fourth order essentially compact finite difference schemes for the space derivatives and a fourth order Runge Kutta scheme for the time advancement. To reveal the mechanism of the propulsive performance, the unsteady force and the shedding of the trailing and leading edge vortices of the foil were analyzed. The effects of some typical factors, such as the frequency and amplitude of the oscillation, the phase difference between the pitching and plunging motions, and the thickness ratio of the foil, on the vortex shedding and unsteady force were discussed.Yang Yan, Lu Xi yun, Yin Xie zhen Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026, China, 2003Journal of Hydrodynamics2003,15,5:18
6Prevalence, awareness, treatment, and control of hypertension in the non-dialysis chronic kidney disease patients显示文摘ZHENG Ying CAI Guang-yan CHEN Xiang-mei FU Ping CHEN Jiang-hua DING Xiao-qiang YU Xue-qing LIN Hong-li LIU Jian XIE Ru-juan WANG Li-ning NI Zhao-hui LIU Fu-you YIN Ai-ping XING Chang-ying WANG Li SHI Wei LIU Jian-she HE Ya-ni DING Guo-hua LI Wen-ge WU Guang-li MIAO Li-ning CHEN Nan SU Zhen MEI Chang-lin ZHAO Jiu-yang GU Yong BAI Yun-kai LUO Hui-min LIN Shan CHEN Meng-hua GONG Li YANG Yi-bin YANG Xiao-ping LI Ying WAN Jian-xin WANG Nian-song LI Hai-ying XI Chun-sheng HAO Li XU Yan FANG Jing-ai LIU Bi-cheng LI Rong-shan WANG Rong ZHANG Jing-hong WANG Jian-qin LOU Tan-qi SHAO Feng-min MEI Feng LIU Zhi-hong YUAN Wei-jie SUN Shi-ren ZHANG Ling ZHOU Chun-hua CHEN Qin-kai JIA Shun-lian GONG Zhi-feng GUAN Guang-ju XIA Tian ZHONG Liang-bao 2013Chinese Medical Journal2013,,12:16
7Identification of mouse liver mitochondria-associated miRNAs and their potential biological functions显示文摘Zhen Bian Li-Min Li Rui Tang Dong-Xia Hou Xi Chen Chen-Yu Zhang Ke Zen 2010Cell Research2010,20,9:15
8H5N1 influenza virus-specific miRNA-like small RNA increases cytokine production and mouse mortality via targeting poly(rC)-binding protein 2显示文摘H5N1 流行性感冒病毒的感染在所有流行性感冒病毒之中引起最高的死亡。位于如此的高病毒的致病力下面的机制不完全地被理解。这里,我们报导 H5N1 流行性感冒病毒编码象 microRNA 一样小 RNA, miR-HA-3p,它从茎被处理由 Argonaute 2 的包含环的病毒的 RNA 先锋,和戏在在 H5N1 感染期间提高 cytokine 生产的一个角色。miR-HA-3p poly 指向的机械学的学习表演(rC ) 有约束力的蛋白质 2 (PCBP2 ) 并且压制它的表达式。与 PCBP2 being 一致 RIG-I/MAVS-mediated 抗病毒的天生的免疫的一个重要否定管理者,由 miR-HA-3p 的 PCBP2 表示的抑制在感染 H5N1 的人的巨噬细胞和老鼠支持 cytokine 生产病毒。我们断定 miR-HA-3p 是首先识别的流行性感冒编码病毒的象 microRNA 一样功能的 RNA 碎片和贡献导致 H5N1 的 cytokine 暴风雨和死亡的一个新奇毒力因素。Xihan Li Zheng Fu Hongwei Liang Yanbo Wang Xian Qi Meng Ding Xinlei Sun Zhen Zhou Ying Huang Hongwei Gu Limin Li Xi Chen Donghai Li Quan Zhao Fenyong Li Hua Wang Jin Wang Ke Zen Chen-Yu Zhang 2018Cell Research2018,28,2:12
9Validation of the chinese version of the EORTC QLQ-CR29 in patients with colorectal cancer显示文摘AIM To assess the validity and reliability of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Colorectal Cancer 29(EORTC QLQ-CR29) in Chinese patients with colorectal cancer(CRC). METHODS From March 2014 to January 2015, 356 patients with CRC from four different hospitals in China were enrolled in the study, and all patients self-administered the EORTC QLQ-CR29 and the quality of life core questionnaire(EORTC QLQ-C30). Evaluation of the scores was based on the Karnofsky Performance Scale(KPS). The reliability and validity of the questionnaires were assessed by Cronbach's α coefficient, the Spearman correlation test and Wilcoxon rank sum test.RESULTS The EORTC QLQ-CR29 showed satisfactory reliability(α > 0.7), although the urinary frequency and blood and mucus in stool dimensions had only moderate reliability(α = 0.608). The multitrait scaling analyses showed good convergent(r > 0.4) and discriminant validity. Significant differences were obtained for each item in the different KPS subgroups(KPS ≤ 80; KPS > 80). body image and most single-item dimensions showed statistically significant differences in patients with a stoma compared with the rest of the patients. CONCLUSION The EORTC QLQ-CR29 exhibits high validity and reliability in Chinese patients with CRC, and can therefore be recommended as a valuable tool for the assessment of quality of life in these patients.Jin-bo Lin Lei Zhang Dong-Wen Wu Zhou-Huan xi xue-Jun Wang Yun-Shou Lin Wakana Fujiwara Jing-Ru Tian Min Wang Peng Peng Ai Guo Zhen Yang Le Luo Ling-Ya Jiang Qia-Qia Li xue-Ying Zhang Yun-Feng Zhang Hou-Wei xu bing Yang xun-Lin Li Yi-xiong Lei 2017World Journal of Gastroenterology2017,23,10:12
10Spatial transmission and meteorological determinants of tuberculosis incidence in Qinghai Province,China:a spatial clustering panel analysis显示文摘Background:Tuberculosis(TB)is the notifiable infectious disease with the second highest incidence in the Qinghai province,a province with poor primary health care infrastructure.Understanding the spatial distribution of TB and related environmental factors is necessary for developing effective strategies to control and further eliminate TB.Methods:Our TB incidence data and meteorological data were extracted from the China Information System of Disease Control and Prevention and statistical yearbooks,respectively.We calculated the global and local Moran’s I by using spatial autocorrelation analysis to detect the spatial clustering of TB incidence each year.A spatial panel data model was applied to examine the associations of meteorological factors with TB incidence after adjustment of spatial individual effects and spatial autocorrelation.Results:The Local Moran’s I method detected 11 counties with a significantly high-high spatial clustering(average annual incidence:294/100000)and 17 counties with a significantly low-low spatial clustering(average annual incidence:68/100000)of TB annual incidence within the examined five-year period;the global Moran’s I values ranged from 0.40 to 0.58(all P-values<0.05).The TB incidence was positively associated with the temperature,precipitation,and wind speed(all P-values<0.05),which were confirmed by the spatial panel data model.Each 10°C,2 cm,and 1 m/s increase in temperature,precipitation,and wind speed associated with 9%and 3%decrements and a 7%increment in the TB incidence,respectively.Conclusions:High TB incidence areas were mainly concentrated in south-western Qinghai,while low TB incidence areas clustered in eastern and north-western Qinghai.Areas with low temperature and precipitation and with strong wind speeds tended to have higher TB incidences.Hua-Xiang Rao Xi Zhang Lei Zhao Juan Yu Wen Ren Xue-Lei Zhang Yong-Cheng Ma Yan Shi Bin-Zhong Ma Xiang Wang Zhen Wei Hua-Fang Wang Li-Xia Qiu 2016Infectious Diseases of Poverty2016,5,1:10
11Outcomes of the national programme on prevention of mother-to-child transmission of hepatitis B virus in China,2016-2017显示文摘Background:In addition to providing free hepatitis B vaccine(HBvacc)series to all infants in China since 2005,the national programme on prevention of mother-to-child transmission(PMTCT)of hepatitis B virus(HBV)started providing free hepatitis B immunoglobulin for all new-borns born to hepatitis B surface-antigen(HBsAg)positive mothers in 2010.However,few studies have evaluated the effectiveness of the PMTCT programme.Therefore,we aimed to investigate the outcomes of the programme and identify associated factors.Method:Using a cross-sectional study design,we collected data on 4112 pairs of HBsAg-positive mothers and their children aged 7-22 months in four representative provinces through interviews and medical record review.We tested HBsAg and hepatitis B surface antibody(anti-HBs)of children by enzyme-linked immunosorbent assay at designated maternal and child hospital laboratories.We used logistic regression to analyse factors associated with child HBsAg and anti-HBs positivity.Results:Thirty-five children were HBsAg positive,indicating the mother-to-child transmission(MTCT)rate was 0.9%(0.6-1.1%).The anti-HBs positive rate was 96.8%(96.3-97.4%).Children receiving HBvacc between 12 and 24h of birth were 2.9 times more likely to be infected than those vaccinated in less than 12 h(adjusted odds ratio[aOR]=2.9,95%confidence interval[CI]:1.4-63,P=0.01).Maternal hepatitis B e-antigen(HBeAg)positivity was associated with higher MTCT rate(aOR=79.1,95%Cl:10.8-580.2,P<0.001)and lower anti-HBs positive rate(aOR=0.4,95%CI:03-0.6,P<0.001).Children with low birth weight(LBW)were 60%less likely to be anti-HBs positive than those with normal birth weight(aOR=0A,95%CI:02-0.8,P=0.01).Conclusions:The MTCT rate was lower than the 2030 WHO elimination goal,which implies the programme is on track to achieve this target.As earlier HBvacc birth dose(HBvcc-BD)was associated with lower MTCT rate,we suggest that the PMTCT programme work with the Expanded Programme on Immunization(EPI)to modify the current recommendation for early HBvcc-BD to a requirement Our finding that LBW was associated with lower anti-HBs positivity points to the need for further studies to understand factors associated with these risks and opportunities for program strengthening.The programme needs to ensure providing essential test to identify HBeAg-positive mothers and their infants and provide them with appropriate medical care and follow-up.Ya-Ping Qiao Min Su Yao Song Xiao-Yan Wang Zhen Li Yan-Lin Li Li-Xia Dou Qian Wang Katrina Hann Guo-Min Zhang Xiao-Na Huang Yu-Ning Yang Xi Jin Ai-Ling Wang 2019Infectious Diseases of Poverty2019,8,4:10
12SIDT1-dependent absorption in the stomach mediates host uptake of dietary and orally administered microRNAs显示文摘Dietary microRNAs have been shown to be absorbed by mammals and regulate host gene expression,but the absorption mechanism remains unknown.Here,we show that SIDT1 expressed on gastric pit cells in the stomach is required for the absorption of dietary microRNAs.SIDT1-deficient mice show reduced basal levels and impaired dynamic absorption of dietary microRNAs.Notably,we identified the stomach as the primary site for dietary microRNA absorption,which is dramatically attenuated in the stomachs of SIDT1-deficient mice.Mechanistic analyses revealed that the uptake of exogenous microRNAs by gastric pit cells is SIDT1 and low-pH dependent.Furthermore,oral administration of plant-derived miR2911 retards liver fibrosis,and this protective effect was abolished in SIDT1-deficient mice.Our findings reveal a major mechanism underlying the absorption of dietary microRNAs,uncover an unexpected role of the stomach and shed light on developing small RNA therapeutics by oral delivery.Qun Chen Fan Zhang Lei Dong Huimin Wu Jie Xu Hanqin Li Jin Wang Zhen Zhou Chunyan Liu Yanbo Wang Yuyan Liu Liangsheng Lu Chen Wang Minghui Liu Xi Chen Cheng Wang Chunni Zhang Dangsheng Li Ke Zen Fangyu Wang Qipeng Zhang Chen-Yu Zhang 2021Cell Research2021,31,3:10
13Evidences for vagus nerve in-maintenance of immune balance and transmission of immune information from gut to brain in STM-infected rats显示文摘AIM:To determine whether salmonella Typhimurium(STM) in gastrointestinal tract can induce the functional activation of brain,whether the vagus nerve involves in signaling immune infomation from gastrointestinal tract to brain and how it influences the immune function under natural infection condition.METHODS:Animal model of gastrointestinal tract infection in the rat was established by an intuation of Salmonella Typhimurium(STM) into stomach to minic the condition of natural bacteria infection,Subdiagphragmatic vagotomy was performed in some of the animals 28 days before infection The changes of Fos expression visualized with immunohistochemistry technique in hypothalamic paraventricular nucleus(pVN) and superaoptic nuclesu (SON)were conted.Meanwhilie,the percentage and the Mean Intensities of Flurescent (MIFs)of CD4+ and CD8+ T cells in peripheral blood were measured by using flow cytometry(FCM),and the pathological changes in ileum and mesenteric lymph node were observed in HE stained sections.RESULTS:In bacteria-stimulated groups,inflammatory pathological changes were seen in ileum and mesenteric lymph node,The percentages of CD4+ T cells in peripheral blood were decreased from 43%±4.5%to 34%±4.9%(P<0.5)and MIFs of CD8+ T cells were also decreased from 2.9±0.39to 2.1±0.36(P<0.05)with STM stimulation.All of them proved that our STM-infection model was reliable Fos immunoreactive(Fos-ir) cells in PVN and SON incerased significantly with STM stimulation,from 189±41 to467±62(P<0.05)and from 64±21 to 282±47(P<0.05)individually,which suggested that STM in gastointestinal tract induced the functional activation of brain Subdiagphragmatic vagotomy attenuated FOs expression in PVN and SON induced by STM,from 467±62to 226±45(P<0.05)and from 282±47to 71±19(P<0.05)individually,and restored the decreased percentages of CD4+ T cells induced by STM from 34%±4.9% to original level 44%±6.0%(P<0.05).In addition,subdiagphragmatic vagotomy itself also decreased the percentages of CD8+ T cells (from 28%±3.0%to 21%±5.9%),P<0.05 and MIFs of CD4+(from 6.6±0.6to4.9±1.0P<0.05)and CD8+ T cells (from 2.9±0.39to 1.4±0.34,P<0.05).Both of them manifested the important role of vagus nerve in transmitting immune information from gut to brain and maintaining the immune balance of the organism.CONCLUSION:Vagus nerve dose involve in transmitting adbominal immune informaton into the brain in STM infection condition and play an important role in maintenance of the immune balance of the oranism.Xi Wang Bai-Ren Wang Zhen Xu Yu-Qiang Ding Gong Ju,Institute of Neuroscience,Fourth Military Medical University,Xi’an 710032,Shaanxi Province,China Xi-Jing Zhang,Department of Anesthesiology,Xi Jing Hospital,Fourth Military Medical University,Xi’an 710032,Shaanxi Province,China 2002World Journal of Gastroenterology2002,8,3:10
14Fenton Reagent Generated in Electrolysis Cell and Its Usage in Degradation and Decolorization of Dyes显示文摘The Electro-chemistry process to produce Fenton reagents has been described. The in situ oxidation of dyes, acid chrome and alizarin red(Fenton reagents) with electrogenerated hydroxyl radicals was investigated. The \{ I-V \} cyclic voltammograms were measured. The redox peaks of the dyes were not observed in the treated dye solutions instead of a couple of O2/H2O2 redox peaks. The IR results indicate that acid chrome dye was decomposed into naphthylamine and phenol aminophenol sulfonic acid. The degradation and the decolorization of the dyes were comfirmed by the visible spectrum and the chemical analysis. The COD cr removing rate was close to 80%.CHEN Zhen ** , ZHENG Xi, CHEN Ri-yao, LAN Rui-fang, LIN Zhi-hong and CHEN Yu-feng Experiment Center, Fujian Normal University, Fuzhou 350007, P. R. ChinaZHANG Yi-kangLinyi Normal College, Linyi 276001, P. R. China 2002Chemical Research in Chinese Universities2002,18,1:8
15Spatio-temporal Fragmentation of Leisure Activities in Information Era: Empirical Evidence from Nanjing, China显示文摘Activity fragmentation provides a new approach for understanding the transformation of urban space and function in the information era. Numerous theoretical and empirical studies have been conducted on activity fragmentation, but few studies have focused on the fragmentation of leisure activities. This study was intended to extend the extant literature by: 1) analysing the spatio-temporal fragmentation of physical and virtual leisure activities by using a dataset collected in Nanjing, China, and 2) evaluating the reasons of leisure activity fragmentation, as well as the potential spatial effect of activity fragmentation. The results indicated that virtual leisure activities are more fragmented than physical leisure activities, but the fragmentation of physical and virtual leisure activities varies on weekday and weekend, as well as in various locations and urban districts. In addition, the results suggested that sociodemographic factors and information and communication technology(ICT) variables distinctly affect the fragmentation of leisure activities. Meanwhile, the fragmentation of virtual leisure activities may enhance the transformation of traditional urban space by reallocating leisure activity times and locations.XI Guangliang ZHEN Feng Puel GILLES Fernandez VALERIE 2017Chinese Geographical Science2017,27,1:8
16Multifunctional MgF_2/Polydopamine Coating on Mg Alloy for Vascular Stent Application显示文摘Mg alloy is of great potential in the application of vascular stent due to its degradation in physical environment and proper mechanical property.However its mechanical integrity does not meet the clinical requirement due to relatively fast degradation.Besides,in order to accelerate the reendothelialization of Mg-based stents,it needs surface modification to improve the attachment,growth and adhesion of endothelial cells(ECs).To solve the main obstacles,an anti-corrosion and quick endothelialization coating was prepared on novel Mg-Zn-Y-Nd alloy via a simple two-step immersion method in the present study,first in hydrofluoric acid(HF) then in dopamine tris-Hydrochloric acid(tris-HC1) solution.The coating was uniform and thin,which consisted of two layers—the upper was polydopamine(PDA) layer and the lower was MgF_2 layer.The alloy with the coating demonstrated dramatic corrosion resistance enhancement in vitro by immersion test and electrochemical test.Moreover the HFPDA-treated Mg alloy exhibited great performance of cell adhesion and proliferation.The coating created a favorable environment for ECs to have a competitive advantage over vascular smooth muscle cells(VSMCs),which was preferable for re-endothelialization.The results suggest that HF-PDA-treated Mg-Zn-Y-Nd alloy has great potential in the application of vascular stent and the surface coating method is of great application value in biodegradable Mg alloy stent due to its simplicity and effectiveness.Xiaoli Liu Zhen Zhen Jing Liu Tingfei Xi Yudong Zheng Shaokang Guan Yufeng Zheng Yan Cheng 2015Journal of Materials Science & Technology2015,31,7:8
17Suppressing secondary reactions of coal pyrolysis by reducing pressure and mounting internals in fixed-bed reactor显示文摘Pyrolysis of Shenmu coal was performed in fixed-bed reactors indirectly heated by reducing operating pressure and mounting internals in the reactor to explore their synergetic effects on coal pyrolysis. Mounting internals particularly designed greatly improved the heat transfer inside coal bed and raised the yield of tar production.Reducing pressure further facilitated the production of tar through its suppression of secondary reactions occurring in the reactor. The absolute increase in tar yield reached 3.33 wt% in comparison with the pyrolysis in the reactor without internals under atmospheric pressure. The obtained tar yield in the reactor with internals under reduced pressure was even higher than the yield of Gray–King assay. Through experiments in a laboratory fixed bed reactor, it was also clarified that the effect of reducing pressure is related to volatile release rate in pyrolysis. It did not obviously vary tar yield at pyrolysis temperatures below 600 °C, while the effect was evident at 650 and 700 °C but became limited again above 800 °C. Under reduced pressure the produced tar contained more aliphatics and phenols but less aromatics.Shuai Cheng Dengguo Lai Zhen Shi Leisheng Hong Jianling Zhang Xi Zeng Shiqiu Gao Guangwen Xu 2017Chinese Journal of Chemical Engineering2017,25,4:7
18Effectiveness of fluidized pellet bed for removing soluble contaminants显示文摘Fluidized pellet bed(FPB) has been successfully applied in water and wastewater treatment. However,the removal mechanism of contaminants especially the soluble ones,is still unclear. This study aimed to evaluate the effectiveness of FPB reactor for removing soluble contaminants from synthetic wastewater. By only coagulation through jar test operation with addition of polyaluminium chloride(PACl) as primary coagulant and polyacryamide(PAM) as coagulant-aid,the removals of soluble chemical oxygen demand(COD) ,total phosphorus(TP) ,and NH4+-N were found to be only 2.2%-7.5%,5.7%-25.5%,and 9.9%-18.5%,respectively. However,by FPB operation under the same dosage of coagulants,these values increased to 82.7%,37.2%,and 50%,indicating that the formation of pellets in the FPB effectively enhanced the removal of soluble contaminants. By careful comparison of the settleablility and filterability of the pollutants after coagulation,the originally soluble contaminants could be divided into three groups,namely:(1) coagulated-and-settleable,(2) coagulated-but-nonsettleable,and(3) uncoagulable. It was found that not only the first two groups but also a large part of the third group could be effectively removed by FPB operation. However,the mechanism for the removal of the uncoagulable pollutants by FPB operation still needs further investigation.WANG Xiaochang,LI Zhihua,WANG Zhen,LI Jinrong,LI Jiayu,CHEN Rong Key Laboratory of Northwest Water Resource,Environment and Ecology,MOE,Xi’an University of Architecture and Technology,Xi’an 710055,China 2009Journal of Environmental Sciences2009,21,1:7
19The Chinese Hα Solar Explorer(CHASE) mission: An overview显示文摘The Chinese Hα Solar Explorer(CHASE), dubbed “Xihe”—Goddess of the Sun, was launched on October 14, 2021 as the first solar space mission of China National Space Administration(CNSA). The CHASE mission is designed to test a newly developed satellite platform and to acquire the spectroscopic observations in the Hα waveband. The Hα Imaging Spectrograph(HIS)is the scientific payload of the CHASE satellite. It consists of two observational modes: raster scanning mode and continuum imaging mode. The raster scanning mode obtains full-Sun or region-of-interest spectral images from 6559.7 to 6565.9 ? and from 6567.8 to 6570.6 ? with 0.024 ? pixel spectral resolution and 1 min temporal resolution. The continuum imaging mode obtains photospheric images in continuum around 6689 ? with the full width at half maximum of 13.4 ?. The CHASE mission will advance our understanding of the dynamics of solar activity in the photosphere and chromosphere. In this paper, we present an overview of the CHASE mission including the scientific objectives, HIS instrument overview, data calibration flow, and first results of on-orbit observations.Chuan Li Cheng Fang Zhen Li MingDe Ding PengFei Chen Ye Qiu Wei You Yuan Yuan MinJie An HongJiang Tao XianSheng Li Zhe Chen Qiang Liu Gui Mei Liang Yang Wei Zhang WeiQiang Cheng JianXin Chen ChangYa Chen Qiang Gu QingLong Huang MingXing Liu ChengShan Han HongWei Xin ChangZheng Chen YiWei Ni WenBo Wang ShiHao Rao HaiTang Li Xi Lu Wei Wang Jun Lin YiXian Jiang LingJie Meng Jian Zhao 2022Science China(Physics,Mechanics & Astronomy)2022,65,8:7
20An Ebola virus-encoded microRNA-like fragment serves as a biomarker for early diagnosis of Ebola virus disease显示文摘Zeliang Chen Hongwei Liang Xi Chen Yuehua Ke Zhen Zhou Mingjuan Yang Ke Zen Ruifu Yang Chao Liu Chen-Yu Zhang 2016Cell Research2016,26,3:7
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