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1Recent Significant Tornadoes in China显示文摘1.Introduction Compared with the United States,whose annual number of tornadoes can exceed 1000,the average number of tornadoes per year in China over the past half a century is estimated to be fewer than 100(Fan and Yu,2015),even though both countries are located in a similar latitudinal zone of the Northern Hemisphere.The annual average recorded number of F1(Fujita scale)or EF1(enhanced Fujita scale)intensity or higher tornadoes in China between 1961 and 2010 isMing XUE Kun ZHAO Mingjung WANG Zhaohui LI Yongguang ZHENG 2016Advances in Atmospheric Sciences2016,33,11:16
2Melanoma differentiation-associated gene-7, MDA-7/IL-24, selectively induces growth suppression, apoptosis in human hepatocellular carcinoma cell line HepG2 by replication-incompetent adenovirus vector显示文摘瞄准:调查在人的肝细胞在肿瘤生长和 apoptosis 上表示 MDA-7/IL-24 的复制无能的侵入人体气管粘膜的病菌向量的效果癌(HCC ) 房间线 HepG2 和正常的肝房间衬里 L02。方法:我们构造了 recombinant 复制无能的 Ad.mda-7 病毒向量并且感染了它进人的 HCC 房间线 HepG2 和正常的肝房间线 L02。RT-PCR 被执行检测在房间表示的 mRNA。被 ELISA 用来在文化上层清液检测 MDA-7/IL-24 蛋白质表示。Ad.mda-7 导致的 apoptosis 的效果被 Hoechst 与染色的 Annexin-V 和 PI 染色和流动血细胞计数试金证实。MTT 试金被用来决定 HepG2 细胞的生长抑制,并且房间周期和 hypodiploidy 分析被流动血细胞计数执行。结果:Recombinant 复制有缺陷者病毒表示 MDA-7/IL-24 成功地被构造。RT-PCR 证明 Ad.mda-7 能调停进 HepG2 和 L02 的外长的基因 MDA-7/IL-24 的表示。在上层清液的 MDA-7/IL-24 蛋白质的集中分别地在 Ad.mda-7-infected L02 和 HepG2 房间是 130 pg/mL 和 110 pg/mL。 Ad.mda-7 感染显然导致了 apoptosis (从2.60%+/-0.72%到33.6%+/-13.2%, P=0.00012 )并且在 HepG2 (抑制比率IR=68%)的生长抑制和在房间的 G2/M 阶段的特定的癌症房间类型的百分比的增加骑车(从6.44%~32.29%, P<0.01 ),然而并非在 L02 房间。结论:这些结果有选择地在人的肝细胞癌细胞线 HepG2 与复制无能的侵入人体气管粘膜的病菌向量由 mda-7/IL-24 基因证实 apoptosis 和生长抑制的正式就职。Cong-Jun Wang Xin-Bo Xue Ji-Lin Yi Kun Chen Jian-WeiZheng Jian Wang Jian-Ping Zeng Rong-Hua Xu 2006World Journal of Gastroenterology2006,12,11:15
3A Matched Comparison Study of Uniportal Versus Triportal Thoracoscopic Lobectomy and Sublobectomy for Early-stage Nonsmall Cell Lung Cancer显示文摘Ju-Wei Mu Shu-Geng Gao Qi Xue Jun Zhao Ning Li Kun Yang Kai Su Zhu-Yang Yuan Jie He 2015Chinese Medical Journal2015,,20:12
4Recent Progress in Dual-Polarization Radar Research and Applications in China显示文摘Dual-polarization(dual-pol)radar can measure additional parameters that provide more microphysical information of precipitation systems than those provided by conventional Doppler radar.The dual-pol parameters have been successfully utilized to investigate precipitation microphysics and improve radar quantitative precipitation estimation(QPE).The recent progress in dual-pol radar research and applications in China is summarized in four aspects.Firstly,the characteristics of several representative dual-pol radars are reviewed.Various approaches have been developed for radar data quality control,including calibration,attenuation correction,calculation of specific differential phase shift,and identification and removal of non-meteorological echoes.Using dual-pol radar measurements,the microphysical characteristics derived from raindrop size distribution retrieval,hydrometeor classification,and QPE is better understood in China.The limited number of studies in China that have sought to use dual-pol radar data to validate the microphysical parameterization and initialization of numerical models and assimilate dual-pol data into numerical models are summarized.The challenges of applying dual-pol data in numerical models and emerging technologies that may make significant impacts on the field of radar meteorology are discussed.Kun ZHAO Hao HUANG Mingjun WANG Wen-Chau LEE Gang CHEN Long WEN Jing WEN Guifu ZHANG Ming XUE Zhengwei YANG Liping LIU Chong WU Zhiqun HU Sheng CHEN 2019Advances in Atmospheric Sciences2019,36,9:12
5Role of the Nocturnal Low-level Jet in the Formation of the Morning Precipitation Peak over the Dabie Mountains显示文摘The diurnal variation of precipitation over the Dabie Mountains(DBM) in eastern China during the 2013 mei-yu season is investigated with forecasts of a regional convection-permitting model. Simulated precipitation is verified against surface rain-gauge observations. The observed morning precipitation peak on the windward(relative to the prevailing synoptic-scale wind) side of the DBM is reproduced with good spatial and temporal accuracy. The interaction between the DBM and a nocturnal boundary layer low-level jet(BLJ) due to the inertial oscillation mechanism is shown to be responsible for this precipitation peak. The BLJ is aligned with the lower-level southwesterly synoptic-scale flow that carries abundant moisture.The BLJ core is established at around 0200 LST upwind of the mountains. It moves towards the DBM and reaches maximum intensity at about 70 km ahead of the mountains. When the BLJ impinges upon the windward side of the DBM in the early morning, mechanical lifting of moist air leads to condensation and subsequent precipitation.Peiling FU Kefeng ZHU Kun ZHAO Bowen ZHOU Ming XUE 2019Advances in Atmospheric Sciences2019,36,1:11
6Impacts of transgenic Bt cotton on the stylet penetration behaviors of Bemisia tabaci biotype B Evidence from laboratory experiments显示文摘Hai-Di Yin Xiao-Ying Wang Kun Xue Cui-Hong Huang Rong-Jiang Wang Feng-Ming Yan Chong-Ren Xu 2010Insect Science2010,17,4:10
7High-speed image reconstruction for optically sectioned,super-resolution structured illumination microscopy显示文摘Super-resolution structured illumination microscopy(SR-SIM)is an outstanding method for visualizing the subcellular dynamics in living cells.To date,by using elaborately designed systems and algorithms,SR-SIM can achieve rapid,optically sectioned,SR observation with hundreds to thousands of time points.However,real-time observation is still out of reach for most SIM setups as conventional algorithms for image reconstruction involve a heavy computing burden.To address this limitation,an accelerated reconstruction algorithm was developed by implementing a simplified workflow for SR-SIM,termed joint space and frequency reconstruction.This algorithm results in an 80-fold improvement in reconstruction speed relative to the widely used Wiener-SIM.Critically,the increased processing speed does not come at the expense of spatial resolution or sectioning capability,as demonstrated by live imaging of microtubule dynamics and mitochondrial tubulation.Zhaojun Wang Tianyu Zhao Huiwen Hao Yanan Cai Kun Feng Xue Yun Yansheng Liang Shaowei Wang Yujie Sun Piero RBianco Kwangsung Oh Ming Lei 2022Advanced Photonics2022,4,2:9
8On the Key Dynamical Processes Supporting the 21.7 Zhengzhou Record-breaking Hourly Rainfall in China显示文摘An extremely heavy rainfall event occurred in Zhengzhou,China,on 20 July 2021 and produced an hourly rainfall rate of 201.9 mm,which broke the station record for China's Mainland.Based on radar observations and a convection-permitting simulation using the WRF-ARW model,this paper investigates the multiscale processes,especially those at the mesoscale,that support the extreme observed hourly rainfall.Results show that the extreme rainfall occurred in an environment characteristic of warm-sector heavy rainfall,with abundant warm moist air transported from the ocean by an abnormally northward-displaced western Pacific subtropical high and Typhoon In-Fa(2021).However,rather than through back building and echo training of convective cells often found in warm-sector heavy rainfall events,this extreme hourly rainfall event was caused by a single,quasi-stationary storm in Zhengzhou.Scale separation analysis reveals that the extreme-rainproducing storm was supported and maintained by the dynamic lifting of low-level converging flows from the north,south,and east of the storm.The low-level northerly flow originated from a mesoscale barrier jet on the eastern slope of the Taihang Mountain due to terrain blocking of large-scale easterly flows,which reached an overall balance with the southerly winds in association with a low-level meso-β-scale vortex located to the west of Zhengzhou.The large-scale easterly inflows that fed the deep convection via transport of thermodynamically unstable air into the storm prevented the eastward propagation of the weak,shallow cold pool.As a result,the convective storm was nearly stationary over Zhengzhou,resulting in record-breaking hourly precipitation.Peng WEI Xin XU Ming XUE Chenyue ZHANG Yuan WANG Kun ZHAO Ang ZHOU Shushi ZHANG Kefeng ZHU 2023Advances in Atmospheric Sciences2023,40,3:9
9Effects of yeast and yeast cell wall polysaccharides supplementation on beef cattle growth performance, rumen microbial populations and lipopolysaccharides production显示文摘This experiment was conducted to investigate the effects of live yeast and yeast cell wall polysaccharides on growth performance,rumen function and plasma lipopolysaccharides(LPS) content and immunity parameters of beef cattle.Forty Qinchuan cattle were randomly assigned to one of four treatments with 10 replicates in each treatment.The dietary treatments were: control diet(CTR),CTR supplemented with 1 g live yeast(2×10^10 live cell g^-1 per cattle per day(YST1),CTR supplemented with 2 g live yeast per cattle per day(YST2) and CTR supplemented with 20 g of yeast cell wall polysaccharides(30.0%≤β-glucan≤35.0%,and 28.0%≤mannanoligosaccharide≤32.0%) per cattle per day(YCW).The average daily gain was higher(P=0.023) and feed conversion ratio was lower(P=0.042) for the YST2 than the CTR.The digestibility of neutral detergent fiber(P=0.039) and acid detergent fiber(P=0.016) were higher in yeast supplemented groups.The acetic acid:propionic acid of the YST2 was lower compared with the CTR(P=0.033).Plasma LPS(P=0.032),acute phase protein haptoglobin(P=0.033),plasma amyloid A(P=0.015) and histamine(P=0.038) were lower in the YST2 compared with the CTR.The copies of fibrolytic microbial populations such as Fibrobacter succinogenes S85,Ruminococcus albus 7 and Ruminococcus flavefaciens FD-1 of the YST2 were higher(P<0.001),while the copies of typical lactate producing bacteria Streptococcus bovis JB1 was lower(P<0.001) compared with the CTR.Little differences were observed between the CTR,YST1 and YCW in growth performance,ruminal fermentation characteristics,microbial populations,immunity indices and total tract nutrient digestibility.It is concluded that the YST2 could promote fibrolytic microbial populations,decrease starch-utilizing bacteria,reduce LPS production in the rumen and LPS absorption into plasma and decrease inflammatory parameters,which can lead to an improvement in growth performance in beef cattle.PENG Quan-hui CHENG Long KANG Kun Tian Gang Mohammad Al-Mamun XUE Bai WANG Li-zhi ZOU Hua-wei Mathew Gitau Gicheha WANG Zhi-sheng 2020Journal of Integrative Agriculture2020,19,3:9
10Application of video-assisted thoracic surgery in the standard operation for thoracic tumors显示文摘Objective: To evaluate the short-term outcomes of video-assisted thoracic surgery (VATS) for thoracic tumors. Methods: The data of 1,790 consecutive patients were retrospectively reviewed. These patients underwent VATS pulmonary resections, VATS esophagectomies, and VATS resections of mediastinal tumors or biopsies at the Cancer Institute & Hospital, Chinese Academy of Medical Sciences between January 2009 and January 2012. Results: There were 33 patients converted to open thoracotomy (OT, 1.84%). The overall morbidity and mortality rate was 2.79% (50/1790) and 0.28% (5/1790), respectively. The overall hospitalization and chest tube duration were shorter in the VATS lobectomy group (n=949) than in the open thoracotomy (OT) lobectomy group (n=753). There were no significant differences in morbidity rate, mortality rate and operation time between the two groups. In the esophageal cancer patients, no significant difference was found in the number of nodal dissection, chest tube duration, morbidity rate, mortality rate, and hospital length of stay between the VATS esophagectomy group (n=81) and open esophagectomy group (n=81). However, the operation time was longer in the VATS esophagectomy group. In the thymoma patients, there was no significant difference in the chest tube duration, morbidity rate, mortality rate, and hospital length of stay between the VATS thymectomy group (n=41) and open thymectomy group (n=41). However, the operation time was longer in the VATS group. The median tumor size in the VATS thymectomy group was comparable with that in the OT group. Conclusions: In early-stage (I/II) non-small cell lung cancer patients who underwent lobectomies, VATS is comparable with the OT approach with similar short-term outcomes. In patients with resectable esophageal cancer, VATS esophagectomy is comparable with OT esophagectomy with similar morbidity and mortality. VATS thymectomy for Masaoka stage I and II thymoma is feasible and safe, and tumor size is not contraindicated. Longer follow-ups are needed to determine the oncologic equivalency of VATS lobectomy, esophagectomy, and thymectomy for thymoma vs. OT.Ju-Wei Mu Gui-Yu Chen Ke-Lin Sun Da-Wei Wang Bai-Hua Zhang Ning Li Fang Lv You-Sheng Mao Qi Xue Shu-Geng Gao Jun Zhao Da-Li Wang Zhi-Shan Li Wen-Dong Lei Yu-Shun Gao Liangze Zhang Jin-Feng Huang Kang Shao Kai Su Kun Yang Liang Zhao Fei-Yue Feng Yong-Gang Wang Jian Li Jie He 2013Cancer Biology & Medicine2013,10,1:8
11Oncolytic adenovirus-mediated MDA-7/IL-24 overexpression enhances antitumor activity in hepatocellular carcinoma cell lines显示文摘BACKGROUND:Melanoma differentiation-associated gene-7 (MDA-7)/interleukin-24(IL-24)is a novel tumor suppressor gene,which has suppressor activity in a broad spectrum of human cancer cells.We investigated the effect of the replication-competent oncolytic adenovirus SG600-IL24 and replication-incompetent adenovirus Ad.IL-24,both expressing human MDA-7/IL-24 on the hepatocellular carcinoma cell lines HepG2,Hep3B,SMMC-7721,HCCLM3,and the normal liver cell line L02. METHODS:Hepatocellular carcinoma cell lines and the normal liver cell line were infected with SG600-IL24 and Ad.IL-24.The mRNA and protein expression of MDA-7/IL-24 in infected cells was confirmed by RT-PCR,ELISA,and Western blotting.MTT assay was used to investigate the proliferation effect.Hoechst staining and Annexin-V and PI staining were performed to study the MDA-7/IL-24 gene expressed in HCC cell lines and the normal liver cell line.Flow cytometry was used to analyse the cell cycle. RESULTS:RT-PCR,ELISA and Western blotting confirmed that the exogenous MDA-7/IL-24 gene was highly expressed in cells infected with SG600-IL24.MTT and apoptosis detection indicated that SG600-IL24 induced growth suppression promoted apoptosis,and blocked cancer cell lines in the G2/M phase in hepatocellular carcinoma cell lines but not in the normal liver cell line. CONCLUSIONS:SG600-IL24 selectively induces growth suppression and apoptosis in hepatocellular carcinoma cell lines in vitro but not in the normal liver cell line L02. Compared with Ad.IL-24,SG600-IL24 dramatically enhances antitumor activity in hepatocellular carcinoma cell lines.Xiao, Chao-Wen Xue, Xin-Bo Zhang, Hui Gao, Wei Yu, Yuan Chen, Kun Zheng, Jian-Wei Wang, Cong-Jun 2010Hepatobiliary & Pancreatic Diseases International2010,9,6:8
12A critical review on the application of biochar in environmental pollution remediation:Role of persistent free radicals(PFRs)显示文摘Biochar as an emerging carbonaceous material has exhibited a great potential in environmental application for its perfect adsorption ability.However,there are abundant persistent free radicals(PFRs)in biochar,so the direct and indirect PFRs-mediated removal of organic and inorganic contaminants by biochar was widely reported.In order to comprehend deeply the formation of PFRs in biochar and their interactions with contaminants,this paper reviews the formation mechanisms of PFRs in biochar and the PFRs-mediated environmental applications of biochar in recent years.Finally,future challenges in this field are also proposed.This review provides a more comprehensive understanding on the emerging applications of biochar from the viewpoint of the catalytic role of PFRs.Kun Luo Ya Pang Dongbo Wang Xue Li Liping Wang Min Lei Qi Huang Qi Yang 2021Journal of Environmental Sciences2021,33,10:8
13Leaf surface factors of transgenic Bt cotton associated with the feeding behaviors of cotton aphids:A case study on non-target effects显示文摘The present paper reports case study results of the risk assessment of transgenic Bt cotton on a non-target pest, cotton aphid, Aphis gossypii. Several types of techniques, i.e., electrical penetration graph (EPG), light and electron microscopy, bioassays and chemical analysis, were applied to investigate physical and chemical leaf factors of 2 transgenic Bt cotton lines (GK12 and GK19) and their pa-rental non-Bt cotton line (Simian3) associated with searching and feeding behaviors of cotton aphids on leaves or leaf extracts of cotton plants. EPG results showed that there were some differences among behaviors of cotton aphids on 2 Bt cotton and 1 non-Bt cotton lines. Cotton aphids performed similarly to leaf surface extracts from 3 cotton lines; and leaf surface chemicals, mainly volatiles and waxes, were almost identical in the components and concentrations among the cotton lines. However, three cotton lines were quite different from each other in the densities of certain kinds of covering trichomes. Therefore, the relationships between the physical characteristics and the searching behaviors of cotton aphids on the three cotton lines were constructed as the regression equations. Glandular trichomes and covering trichomes with 5 branches influenced the cotton aphids' searching behaviors effectively; and other trichomes with other branches affected aphids in varying ways. These results demonstrated that leaf surface physical factors of transgenic Bt cotton lines different from their parental non-Bt line could affect the penetration behaviors of non-target cotton aphids. Cotton aphids penetrate and feed more easily on two Bt cotton lines than on the non-Bt cotton line.XUE Kun, DENG Su, WANG RongJiang, YAN FengMing, XU ChongRen College of Life Sciences, Peking University, Beijing 100871, China 2008Science China(Life Sciences)2008,51,2:8
14Temperature enhancement induced by ionosphere heating in low altitude region显示文摘电子温度近似等于离子温度的假设不在在低电离层区域加热的高频率(HF ) 期间是合理的。因此,使用理论公式支离破碎与 collisional 血浆散布系列,支离破碎散布数据在电离层在 91.7 km 高度加热期间被分析在 2006 年 8 月 15 日。电子温度的改进被获得,并且增长百分比分别地在 10:22 和 10:30 的通用时间直到 37% 和 46% 。由使用一样的初始化值,加热进程的电离层被欧姆的理论模仿,试验性的结果与模拟基本上一致。Bin Xu Jian Wu Zhensen Wu Jun Wu Haiqin Che Yubo Yan Kun Xue 2008Progress in Natural Science:Materials International2008,18,11:7
15All-silicon dual-cavity fiber-optic pressure sensor with ultralow pressure-temperature cross-sensitivity and wide working temperature range显示文摘Pressure-temperature cross-sensitivity and its accompanying temperature-related stability is a nerve-wracking obstruction for pressure sensor performance in a wide temperature range.To solve this problem,we propose a novel(to the best of our knowledge)all-silicon dual-cavity optical Fabry–Perot interferometer(FPI)pressure sensor.The all-silicon structure has high intrinsic reflectivity and is able to eliminate the influence of thermal-expansion-mismatch-induced stress and chemical-reaction-induced gas generation,and therefore,in essence,enhances measurement accuracy.From the experiment results,the pressure-temperature cross-sensitivity is reduced to be∼5.96 Pa/℃,which presents the lowest pressure-temperature cross-sensitivity among the FPI pressure sensors with the capability of surviving high temperatures up to 700℃ thereby opening the way for high-precision pressure monitoring in various harsh and remote environments.Xue Wang Junfeng Jiang Shuang Wang Kun Liu Tiegen Liu 2021Photonics Research2021,9,4:7
16Review of Chinese atmospheric science research over the past 70 years: Synoptic meteorology显示文摘Synoptic meteorology is a branch of meteorology that uses synoptic weather observations and charts for the diagnosis,study,and forecasting of weather.Weather refers to the specific state of the atmosphere near the Earth’s surface during a short period of time.The spatial distribution of meteorological elements in the atmosphere can be represented by a variety of transient weather phenomena,which are caused by weather systems of different spatial and temporal scales.Weather is closely related to people’s life,and its development and evolution have always been the focus of atmospheric scientific research and operation.The development of synoptic meteorology is closely related to the development of observation systems,dynamical theories and numerical models.In China,observation networks have been built since the early 1950 s.Up to now,a comprehensive meteorological observation systembased on ground,air and space has been established.In particular,the development of a new generation of dense radar networks,the development of the Fengyun satellite series and the implementation of a series of large field experiments have brought our understanding of weather from large-scale environment to thermal dynamics,cloud microphysical structure and evolution characteristics of meso and micro-scale weather systems.The development of observation has also promoted the development of theory,numerical model and simulation.In the early days,China mainly used foreign numerical models.Lately,China has developed numerical model systems with independent intellectual property rights.Based on the results of high-resolution numerical simulations,in-depth understanding of the initiation and evolution mechanism and predictability of weather at different scales has been obtained.Synoptic meteorology has gradually changed from an initially independent development to a multidisciplinary approach,and the interaction between weather and the change of climate and environment has become a hot and frontier topic in atmospheric science.This paper reviews the important scientific and technological achievements made in China over the past 70 years in the fields of synoptic meteorology based on the literatures in China and abroad,from six aspects respectively including atmospheric dynamics,synoptic-scale weather,typhoon and tropical weather,severe convective weather,numerical weather prediction and data assimilation,weather and climate,atmospheric physics and atmospheric environment.Zhiyong MENG Fuqing ZHANG Dehai LUO Zhemin TAN Juan FANG Jianhua SUN Xueshun SHEN Yunji ZHANG Shuguang WANG Wei HAN Kun ZHAO Lei ZHU Yongyun HU Huiwen XUE Yaping MA Lijuan ZHANG Ji NIE Ruilin ZHOU Sa LI Hongjun LIU Yuning ZHU 2019Science China Earth Sciences2019,62,12:7
17Active dry yeast supplementation improves the growth performance,rumen fermentation, and immune response of weaned beef calves显示文摘The objective of this experiment was to investigate the potential benefits of active dry yeast(ADY)on the growth performance,rumen fermentation,nutrient digestibility,and serum parameters of weaned beef calves.Thirty Simmental crossbred male calves(body weight=86.47±4.41 kg and 70±4 d of age)were randomly divided into 2 groups:control(CON)(fed basal ration)and ADY(fed basal ration and 5 g/d ADY per calf).The dietary concentrate-to-roughage ratio was 35:65.All the calves were regularly provided rations 3 times a day at 07:00,13:00,and 19:00 and had free access to wate r.The experiment lasted for 60 d.The average daily gain of ADY group was higher(P=0.007)than that of the CON group,and the ratio of feed intake to average daily gain in the ADY group was reduced(P=0.022)as compared to the CON group.The concentration of ruminal ammonia-N was higher(P=0.023)in the CON group than that in the ADY group,but an opposite trend of microbial protein was found between the 2 groups.Also,the ruminal concentrations of propionate and butyrate were higher(P<0.05)in the ADY group than those in the CON group.Calves fed ADY exhibited higher(P<0.05)crude protein and neutral detergent fiber digestibility.Supplementation of ADY increased(P<0.05)the contents of glucose,glutathione peroxidase,superoxide dismutase,immunoglobulin A,immunoglobulin M,and interleukin 10 in the serum of calves,but an opposite trend was observed in malondialdehyde,interleukin 1 beta,and tumor necrosis factor alpha contents between the 2 groups.In conclusion,dietary supplementation with ADY could improve the growth performance,rumen fermentation,nutrient digestibility,antioxidant ability,and immune response of weaned beef calves.Jian Ma Cheng Wang Zhisheng Wang Guang Cao Rui Hu Xueying Wang Huawei Zou Kun Kang Quanhui Peng Bai Xue Lizhi Wang Yueming Zhu Xiaopeng Zhu 2021Animal Nutrition2021,,4:7
18The Lyman-alpha Solar Telescope(LST) for the ASO-S mission——Ⅱ. design of LST显示文摘As one of the three payloads for the Advanced Space-based Solar Observatory(ASO-S)mission,the Lyman-alpha(Lyα)Solar Telescope(LST)is composed of three instruments:a Solar Corona Imager(SCI),a LyαSolar Disk Imager(SDI)and a full-disk White-light Solar Telescope(WST).When working in-orbit,LST will simultaneously perform high-resolution imaging observations of all regions from the solar disk to the inner corona up to 2.5 R⊙(R⊙stands for the mean solar radius)with a spatial resolution of 4.8′′and 1.2′′for coronal and disk observations,respectively,and a temporal resolution of 30–120 s and 1–120 s for coronal and disk observations,respectively.The maximum exposure time can be up to20 s due to precise pointing and image stabilization function.Among the three telescopes of LST,SCI is a dual-waveband coronagraph simultaneously and independently observing the inner corona in the HI Lyα(121.6±10 nm)line and white light(WL)(700±40 nm)wavebands by using a narrowband Lyαbeam splitter and has a field of view(FOV)from 1.1 to 2.5 R⊙.The stray-light suppression level can attain<10^-6 B⊙(B⊙is the mean brightness of the solar disk)at 1.1 R⊙and≤5×10^-8 B⊙at 2.5 R⊙.SDI and WST are solar disk imagers working in the Lyαline and 360.0 nm wavebands,respectively,which adopt an off-axis two-mirror reflective structure with an FOV up to 1.2 R⊙,covering the inner coronal edge area and relating to coronal imaging.We present the up-to-date design for the LST payload.Bo Chen Hui Li Ke-Fei Song Quan-Feng Guo Pei-Jie Zhang Ling-Ping He Shuang Dai Xiao-Dong Wang Hai-Feng Wang Chun-Long Liu Hong-Ji Zhang Guang Zhang Yunqi Wang Shi-Jie Liu Hong-Xin Zhang Lei Liu Shi-Lei Mao Yang Liu Jia-Hao Peng Peng Wang Liang Sun Yang Liu Zhen-Wei Han Yan-Long Wang Kun Wu Guang-Xing Ding Peng Zhou Xin Zheng Ming-Yi Xia Qing-Wen Wu Jin-Jiang Xie Ya Chen Shu-Mei Song Hong Wang Bo Zhu Chang-Bo Chu Wen-Gang Yang Li Feng Yu Huang Wei-Qun Gan Ying Li Jing-Wei Li Lei Lu Jian-Chao Xue Bei-Li Ying Ming-Zhe Sun Cheng Zhu Wei-Min Bao Lei Deng Zeng-Shan Yin 2019Research in Astronomy and Astrophysics2019,19,11:6
19Adenovirus vector expressing mda-7 selectively kills hepatocellular carcinoma cell line Hep3B显示文摘BACKGROUND:Melanoma differentiation associated gene-7(mda-7)is a novel tumor suppressor gene,which has suppressor activity in a broad spectrum of human cancer cells both in vitro and in vivo through activation of various intracellular signaling pathways.In this study, we investigated the potential effect of mda-7 on human hepatocellular carcinoma(HCC)in vitro. METHODS:Cells from the human HCC cell line Hep3B and the human liver cell line L-02 were assigned to three groups. One was cultured in Dulbecco's modified Eagle's medium without serum(control).The others were transfected with adenovirus expressing the mda-7 gene(Ad.mda-7)or adenovirus vector serving as negative control(Ad.vec).The expression of MDA-7 and Bcl-2 proteins in Hep3B and L-02 cells was confirmed by the reverse transcriptase-polymerase chain reaction and enzyme-linked immunosorbent assay. The methyl thiazolyl tetrazolium colorimetric assay and flow cytometry were used to assess tumor cell proliferation and the cell cycle.Hoechst and Annexin-V/propidium iodide staining were used to study mda-7 gene expression in Hep3B and L-02 cells.The expression of MDA-7,Bcl-2 and Bax proteins were detected by Western blotting.RESULTS:The mda-7 gene was expressed in Hep3B and L-02 cells.The protein concentrations of MDA-7 in supernatants were 790 and 810 pg/ml,respectively.mda-7 induced Hep3B growth suppression and apoptosis,compared with Ad.mda-7 and control(P<0.01).In addition,cell block in G2/M was identified by exposure of HCC cells to secreted MDA-7 protein,but this was not found in L-02.The gene expression of Bcl-2 was markedly decreased in Hep3B but not in L-02. CONCLUSIONS:mda-7 selectively induces growth inhibi- tion and apoptosis in the HCC cell line Hep3B but not in the normal liver cell line L-02 via downregulating the anti- apoptosis protein Bcl-2.It could be an ideal gene for gene therapy in HCC.Xue, Xin-Bo Chen, Kun Wang, Cong-Jun Zheng, Jian-Wei Yu, Yuan Peng, Zhi-Hai Wu, Zai-De 2008Hepatobiliary & Pancreatic Diseases International2008,7,5:6
20CD147 antibody specifically and effectively inhibits infection and cytokine storm of SARS-CoV-2 and its variants delta,alpha,beta,and gamma显示文摘SARS-CoV-2 mutations contribute to increased viral transmissibility and immune escape,compromising the effectiveness of existing vaccines and neutralizing antibodies.An in-depth investigation on COVID-19 pathogenesis is urgently needed to develop a strategy against SARS-CoV-2 variants.Here,we identified CD147 as a universal receptor for SARS-CoV-2 and its variants.Meanwhile,Meplazeumab,a humanized anti-CD147 antibody,could block cellular entry of SARS-CoV-2 and its variants-alpha,beta,gamma,and delta,with inhibition rates of 68.7,75.7,52.1,52.1,and 62.3%at 60μg/ml,respectively.Furthermore,humanized CD147 transgenic mice were susceptible to SARS-CoV-2 and its two variants,alpha and beta.When infected,these mice developed exudative alveolar pneumonia,featured by immune responses involving alveoli-infiltrated macrophages,neutrophils,and lymphocytes and activation of IL-17 signaling pathway.Mechanistically,we proposed that severe COVID-19-related cytokine storm is induced by a'spike protein-CD147-CyPA signaling axis':Infection of SARS-CoV-2 through CD147 initiated the JAK-STAT pathway,which further induced expression of cyclophilin A(CyPA);CyPA reciprocally bound to CD147 and triggered MAPK pathway.Consequently,the MAPK pathway regulated the expression of cytokines and chemokines,which promoted the development of cytokine storm.Importantly,Meplazumab could effectively inhibit viral entry and inflammation caused by SARS-CoV-2 and its variants.Therefore,our findings provided a new perspective for severe COVID-19-related pathogenesis.Furthermore,the validated universal receptor for SARS-CoV-2 and its variants can be targeted for COVID-19 treatment.Jiejie Geng Liang Chen Yufeng Yuan Ke Wang Youchun Wang Chuan Qin Guizhen Wu Ruo Chen Zheng Zhang Ding Wei Peng Du Jun Zhang Peng Lin Kui Zhang Yongqiang Deng Ke Xu Jiangning Liu Xiuxuan Sun Ting Guo Xu Yang Jiao Wu Jianli Jiang Ling Li Kun Zhang Zhe Wang Jing Zhang Qingguo Yan Hua Zhu Zhaohui Zheng Jinlin Miao Xianghui Fu Fengfan Yang Xiaochun Chen Hao Tang Yang Zhang Ying Shi Yumeng Zhu Zhuo Pei Fei Huo Xue Liang Yatao Wang Qingyi Wang Wen Xie Yirong Li Mingyan Shi Huijie Bian Ping Zhu Zhi-Nan Chen 2021Signal Transduction and Targeted Therapy2021,6,10:6
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