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629篇 您的检索式:作者名="Yue Shen"
    题名 作者 年代 出处 被引量
1The WRKY Gene Family in Rice (Oryza sativa)显示文摘WRKY 基因编码涉及各种各样的生物学过程的规定的抄写因素。这些锌手指蛋白质,特别调停的那些成员强调回答,特别地在植物被扩展。便于进化历史的学习和这个超级基因家庭的功能,我们用 HMMER 和明确地为米饭被训练的一个隐藏的 Markov 模型为 WRKY 基因执行了彻底的搜索。这个工作在 Oryza sativa L 导致了 WRKY 基因模型的一张全面的表。ssp。indica 和 L。ssp。装饰用的梨树。这些基因印射,导致 98 的鉴定单个染色体便于消除在装饰用的梨树的冗余的 WRKY 基因并且 102 在 indica 米饭。这些基因进一步根据他们的锌手指领域的数字和结构被分类。在相应 indica 和装饰用的梨树染色体上基于保存 WRKY 领域的一棵系统树和 WRKY loci 的图形的显示,我们识别了可能的 WRKY 在内的基因复制,和在二密切相关的米饭亚种之间的损失。另外考察了在到水杨酸和 jasmonic 酸,种子发展和萌芽的抗病性和回答的 WRKYgenes 的角色被赤霉素,包括老朽的另外的发展过程,和对不能生活的压力和 abscisic 酸的回答在大米和另外的工厂调停。发信号小径调停 WRKY 基因表示也被讨论……Christian A. Ross Yue Liu Qingxi J. Shen 2007Journal of Integrative Plant Biology2007,49,6:97
2Towards 6G wireless communication networks:vision,enabling technologies,and new paradigm shifts显示文摘The fifth generation(5G)wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized,such as mass connectivity,ultra-reliability,and guaranteed low latency.However,5G will not meet all requirements of the future in 2030 and beyond,and sixth generation(6G)wireless communication networks are expected to provide global coverage,enhanced spectral/energy/cost efficiency,better intelligence level and security,etc.To meet these requirements,6G networks will rely on new enabling technologies,i.e.,air interface and transmission technologies and novel network architecture,such as waveform design,multiple access,channel coding schemes,multi-antenna technologies,network slicing,cell-free architecture,and cloud/fog/edge computing.Our vision on 6G is that it will have four new paradigm shifts.First,to satisfy the requirement of global coverage,6G will not be limited to terrestrial communication networks,which will need to be complemented with non-terrestrial networks such as satellite and unmanned aerial vehicle(UAV)communication networks,thus achieving a space-airground-sea integrated communication network.Second,all spectra will be fully explored to further increase data rates and connection density,including the sub-6GHz,millimeter wave(mmWave),terahertz(THz),and optical frequency bands.Third,facing the big datasets generated by the use of extremely heterogeneous networks,diverse communication scenarios,large numbers of antennas,wide bandwidths,and new service requirements,6G networks will enable a new range of smart applications with the aid of artificial intelligence(AI)and big data technologies.Fourth,network security will have to be strengthened when developing 6G networks.This article provides a comprehensive survey of recent advances and future trends in these four aspects.Clearly,6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears.Xiaohu YOU Cheng-Xiang WANG Jie HUANG Xiqi GAO Zaichen ZHANG Mao WANG Yongming HUANG Chuan ZHANG Yanxiang JIANG Jiaheng WANG Min ZHU Bin SHENG Dongming WANG Zhiwen PAN Pengcheng ZHU Yang YANG Zening LIU Ping ZHANG Xiaofeng TAO Shaoqian LI Zhi CHEN Xinying MA Chih-Lin I Shuangfeng HAN Ke LI Chengkang PAN Zhimin ZHENG Lajos HANZO Xuemin(Sherman)SHEN Yingjie Jay GUO Zhiguo DING Harald HAAS Wen TONG Peiying ZHU Ganghua YANG Jun WANG Erik GLARSSON Hien Quoc NGO Wei HONG Haiming WANG Debin HOU Jixin CHEN Zhe CHEN Zhangcheng HAO Geoffrey Ye LI Rahim TAFAZOLLI Yue GAO HVincent POOR Gerhard P.FETTWEIS Ying-Chang LIANG 2021Science China(Information Sciences)2021,64,1:122
32018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
4Get effective polyclonal antisera in one month显示文摘According to the traditional immunization procedure, after the first injection of the sample A (emulsion of aimed antigen and Freund's complete adjuvant) to immunize rabbit, successive injections of the sample B (emulsion of aimed antigen and Freund's incomplete adjuvant) were followed every 2-4 weeks. In general,high titer of the corresponding polyclonal antisera will be observed after 4-5 injections of sample B in 3-4months. This report presents a simply modified procedure that was able to stimulate the antisera formation in one month and achieve enough avidity to satisfy either Western blot or immunohistochemistry analysis.It just applied an additional injection of the sample A to the rabbit at the 3rd day after the primary immunization injection. You could gain the high titer of the antisera right after the first sample B injection in one month. This method has produced the desired results in three different recombinant antigens with different molecular weight (5.9 KD-55 KD) expressed from prokaryotic or eukaryotic cells.YUAN XIN HU, Ju YUAN QUO, Lu SHEN, YAN CHEN, Zu CHUAN ZHANG, YONG LIAN ZHANGState Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue Yang Road, 2002Cell Research2002,12,2:45
5The Global Stratotype Section and Point (GSSP) for the boundary between the Capitanian and Wuchiapingian Stage (Permian)显示文摘Yugan Jin Shuzhong Shen Charles M. Henderson Xiangdong Wang Wei Wang Yue Wang Changqun Cao Qinghua Shang 2006Episodes2006,29,4:39
6Global warming, human-induced carbon emissions, and their uncertainties显示文摘In recent decades, there have been a number of debates on climate warming and its driving forces. Based on an extensive literature review, we suggest that (1) climate warming occurs with great uncertainty in the magnitude of the temperature increase; (2) both human activities and natural forces contribute to climate change, but their relative contributions are difficult to quantify; and (3) the dominant role of the increase in the atmospheric concentration of greenhouse gases (including CO 2 ) in the global warming claimed by the Intergovernmental Panel on Climate Change (IPCC) is questioned by the scientific communities because of large uncertainties in the mechanisms of natural factors and anthropogenic activities and in the sources of the increased atmospheric CO 2 concentration. More efforts should be made in order to clarify these uncertainties.FANG JingYun ZHU JiangLing WANG ShaoPeng YUE Chao SHEN HaiHua 2011Science China Earth Sciences2011,54,10:37
7Terrestrial carbon sinks in China and around the world and their contribution to carbon neutrality显示文摘Enhancing the terrestrial ecosystem carbon sink(referred to as terrestrial C sink) is an important way to slow down the continuous increase in atmospheric carbon dioxide(CO_(2)) concentration and to achieve carbon neutrality target.To better understand the characteristics of terrestrial C sinks and their contribution to carbon neutrality,this review summarizes major progress in terrestrial C budget researches during the past decades,clarifies spatial patterns and drivers of terrestrial C sources and sinks in China and around the world,and examines the role of terrestrial C sinks in achieving carbon neutrality target.According to recent studies,the global terrestrial C sink has been increasing from a source of (-0.2±0.9) Pg C yr^(-1)(1 Pg=1015g)in the 1960s to a sink of (1.9±1.1) Pg C yr^(-1) in the 2010s.By synthesizing the published data,we estimate terrestrial C sink of 0.20–0.25 Pg C yr^(-1) in China during the past decades,and predict it to be 0.15–0.52 Pg C yr^(-1) by 2060.The terrestrial C sinks are mainly located in the mid-and high latitudes of the Northern Hemisphere,while tropical regions act as a weak C sink or source.The C balance differs much among ecosystem types:forest is the major C sink;shrubland,wetland and farmland soil act as C sinks;and whether the grassland functions as C sink or source remains unclear.Desert might be a C sink,but the magnitude and the associated mechanisms are still controversial.Elevated atmospheric CO_(2) concentration,nitrogen deposition,climate change,and land cover change are the main drivers of terrestrial C sinks,while other factors such as fires and aerosols would also affect ecosystem C balance.The driving factors of terrestrial C sink differ among regions.Elevated CO_(2) concentration and climate change are major drivers of the C sinks in North America and Europe,while afforestation and ecological restoration are additionally important forcing factors of terrestrial C sinks in China.For future studies,we recommend the necessity for intensive and long-term ecosystem C monitoring over broad geographic scale to improve terrestrial biosphere models for accurately evaluating terrestrial C budget and its dynamics under various climate change and policy scenarios.Yuanhe Yang Yue Shi Wenjuan Sun Jinfeng Chang Jianxiao Zhu Leiyi Chen Xin Wang Yanpei Guo Hongtu Zhang Lingfei Yu Shuqing Zhao Kang Xu Jiangling Zhu Haihua Shen Yuanyuan Wang Yunfeng Peng Xia Zhao Xiangping Wang Huifeng Hu Shiping Chen Mei Huang Xuefa Wen Shaopeng Wang Biao Zhu Shuli Niu Zhiyao Tang Lingli Liu Jingyun Fang 2022Science China(Life Sciences)2022,65,5:32
8Principles and construction of MSD adder in ternary optical computer显示文摘The two remarkable features of ternary values and a massive unit with thousands bits of parallel computation will make the ternary optical computer (TOC) with modified signed-digit (MSD) adder more powerful and e?cient than ever before for numerical calculations. Based on the decrease-radix design presented previously, a TOC can satisfy either a user requiring huge capacity for data calculations or one with a moderate amount of data, if it is equipped with a prepared adder. Furthermore, with the application of pipelined operations and the proposed data editing technique, the e?ciency of the prepared adder can be greatly improved, so that each calculated result can be obtained almost within one clock cycle. It is hopeful that by employing a MSD adder, users will be able to enter a new dimension with the creation of a new multiplier, new divider, as well as new matrix operator in a TOC in the near future.JIN Yi SHEN YunFu PENG JunJie XU ShiYi DING GuangTai YUE DongJian YOU HaiHang 2010Science China(Information Sciences)2010,53,11:26
9Effects of plastic film mulching on soil greenhouse gases(CO2,CH4 and N2O) concentration within soil profiles in maize fields on the Loess Plateau,China显示文摘To better understand the effects of plastic film mulching on soil greenhouse gases(GHGs) emissions,we compared seasonal and vertical variations of GHG concentrations at seven soil depths in maize(Zea mays L.) fields at Changwu station in Shaanxi,a semi-humid region,between 2012 and 2013.Gas samples were taken simultaneously every one week from non-mulched(BP) and plastic film-mulched(FM) field plots.The results showed that the concentration of GHGs varied distinctly at the soil-atmosphere interface and in the soil profile during the maize growing season(MS).Both carbon dioxide(CO_2) and nitrous oxide(N_2O) concentrations increased with increasement of soil depth,while the methane(CH_4)concentrations decreased with increasement of soil depth.A strong seasonal variation pattern was found for CO_2 and N_2O concentrations,as compared to an inconspicuous seasonal variation of CH_4 concentrations.The mean CO_2 and N_2O concentrations were higher,but the mean CH_4 concentration in the soil profiles was lower in the FM plots than in the BP plots.The results of this study suggested that plastic film mulching significantly increased the potential emissions of CO_2and N_2O from the soil,and promoted CH_4 absorption by the soil,particularly during the MS.NAN Wei-ge YUE Shan-chao HUANG Hai-zhou LI Shi-qing SHEN Yu-fang 2016Journal of Integrative Agriculture2016,15,2:25
10The Global Boundary Stratotype Section and Point (GSSP) for the base of Changhsingian Stage (Upper Permian)显示文摘Yugan Jin Yue Wang Charles Henderson Bruce R. Wardlaw Shuzhong Shen Changqun Cao 2006Episodes2006,29,3:24
11A SIMPLIFIED CALCULATING METHOD OF NONLINEAR FREQUENCY OF CABLE NET UNDER MEAN WIND LOAD显示文摘电报网支持了在点点的最先进的技术支持了的玻璃窗帘人玻璃窗帘墙,广泛地在中国被使用。因为它在风负担下面的大偏转和高非线性,电缆线网络的动态性能是极大地与常规线性结构的不同。连续的膜理论被用来构造非线性的颤动电报网的微分方程,和泛音平衡方法被用来解决非线性的频率的分析公式。为了验证上述分析公式,公式的结果和非线性的女性的时间历史方法的精确性,被比较并且发现了在好同意。而且,微分方程和非线性的频率在这篇论文获得了的非线性的颤动是在波动的风负担下面的一张电报网的 wind-inducedresponse 分析的基础。Feng Ruoqiang Wu Yue Shen Shizhao 2006Acta Mechanica Solida Sinica2006,19,3:22
12Regulation of demethylation and re-expression of RASSF1A gene in gastric cancer cell lines by combined treatment of 5-Aza-CdR and NaB显示文摘AIM: To investigate the changes of methylation state and expression of RASSF1A gene in human gastric cancer cell lines SGC7901 and BGC823 which were treated in vitro with demethlylating agent 5-Aza-CdR in combination with histone deacetylase inhibitor NaB. METHODS: After SGC7901 and BGC823 cells were treated with 5-Aza-CdR and/or NaB,the methylation state of RASSF1A gene was detected by methylation-specific PCR,and the changes in expression of mRNA and protein level of RASSF1A gene were observed by RT-PCR and Western-blotting before and after drug treatment. RESULTS: Hypermethylation was detected in the promoter region of RASSF1A gene in both SGC7901 and BGC823 cells,and there was no expression of this gene at both mRNA and protein level. After treatment with 5-Aza-CdR,demethylation occurred in the promoter region of RASSF1A gene,which subsequently induced re-expression of this gene. The treatment with NaB alone showed no effect on the methylation state and expression of RASSF1A gene. The combined treatment of 5-Aza-CdR and NaB induced complete demethylation of RASSF1A gene,leading to a significantly higher re-expression of the mRNA and protein of RASSF1A than those treated with 5-Aza-CdR alone (P < 0.05). CONCLUSION: Hypermethylation in the promoter region is related to inactivation of RASSF1A gene in human gastric cancer cell lines SGC7901 and BGC823,while demethlylating agent 5-Aza-CdR can reverse the methylation state of RASSF1A gene and induce its re-expression. Histone deacetylase inhibitor NaB had a synergistic effect with 5-Aza-CdR in both demethylation and gene transcriptional regulation.Wen-Jing Shen Dong-Qiu Dai Yue Teng Hong-Bo Liu 2008World Journal of Gastroenterology2008,14,4:21
13Astragalus polysaccharides suppress ICAM-1 and VCAM-1 expression in TNF-a-treated human vascular endothelial cells by blocking NF-KB activation显示文摘Yu-ping ZHU Tao SHEN Ya-jun LIN Bei-dong CHEN Yang RUAN Yuan CAO Yue QIAO Yong MAN Shu WANG Jian LI 2013Acta Pharmacologica Sinica2013,34,8:20
14Two Novel Antifungal Saponins from Tibetan Herbal Medicine Clematis tangutica显示文摘Antifungal assay-guided isolation of the ethanol extract of the aerial parts of Clematis tangutica yielded two novel triterpene saponins. Their structures were determined to be 3-O-a-L-arabinopyranosyl hederagenin 28-O-a-L-rhamnopyranosyl ester (1) and 3-O-b-D- glucopyranosyl(14)-a-L-arabinopyranosyl hederagenin 28-O-a-L-rhamnopyranosyl ester (2) on the basis of spectral data and chemical reactions.Zhi Zhi DU, Na ZHU, Yue Mao SHEN* Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204 2003Chinese Chemical Letters2003,14,7:20
15LncRNA SNHG5/miR-26a/SOX2 signal axis enhances proliferation of chondrocyte in osteoarthritis显示文摘Chondrocyte 在骨关节炎(OA ) 涉及关节的破坏病人。这研究的目的是探索小核仁的 RNA 主机基因 5 的表达式水平(SNHG5 ) 并且在 chondrocyte 评估它的函数。在我们的当前的学习, SNHG5 的表示层次, miR-26a,和在 17 关节的软骨纸巾并且在 non-OA 的 SOX2,组被即时量的反向抄写的聚合酶链反应估计。结果证明 SNHG5 和 SOX2 的层次是显著地在 OA 纸巾的 downregulated,当 miR-26a 的水平是 upregulated 时。MTT,殖民地形成和房间 transwell 试金被执行在 CHON-001 房间在房间生存能力,生长能力,和迁居能力上估计 SNHG5 的功能。SNHG5 能支持 chondrocyte 房间增长和移植,这被发现。在 SNHG5 和 miR-26a 之间的关系被证实由裂开并且酶记者试金。SOX2 被酶记者试金作为 miR-26a 的目标基因识别。营救试金被使用在 SNHG5, miR-26a,和 SOX2 之中验证关系。我们的当前的学习证明 SNHG5 通过作为 ceRNA 工作因此,竞争地擦掉 miR-26a 调整 SOX2 的表示涉及 OA 的机制。Huijun Shen Yue Wang Wudan Shi Guoxun Sun Luojia Hong Ying Zhang 2018Acta Biochimica et Biophysica Sinica2018,50,2:18
16Neoadjuvant chemotherapy for locally advanced cervical cancer reduces surgical risks and lymph-vascular space involvement显示文摘Neoadjuvant chemotherapy(NACT),which can reduce the size and therefore increase the resectability of tumors,has recently evolved as a treatment for locally advanced cervical cancer.NACT has been reported to decrease the risk of pathologic factors related to prognosis of cervical cancer.To further assess the effects of NACT on surgery and the pathologic characteristics of cervical cancer,we reviewed 110 cases of locally advanced cervical cancer treated with radical hysterectomy with or without NACT at the People's Hospital of Peking University between January 2006 and December 2010.Of 110 patients,68 underwent platinum-based NACT prior to surgery(NACT group) and 42 underwent primary surgery treatment(PST group).Our results showed 48 of 68(70.6%) patients achieved a complete response or partial response to NACT.Estimated blood loss,operation time,and number of removed lymph nodes during surgery,as well as complication rates during and after surgery were not significantly different between the NACT group and the PST group.The rates of deep stromal invasion,positive parametria,positive surgical vaginal margins,and lymph node metastasis were not significantly different between the two groups.However,the rate of lymph-vascular space involvement(LVSI) was significantly lower in the NACT group than in the PST group(P = 0.021).In addition,the response rate of NACT was significantly higher in the patients with chemotherapeutic drugs administrated via artery than via vein.Our results suggest that NACT is a safe and effective treatment for locally advanced cervical cancer and significantly decreases the rate of LVSI.Yue Wang Guang Wang Li-Hui Wei Ling-Hui Huang Jian-Liu Wang Shi-Jun Wang Xiao-Ping Li Dan-Hua Shen Dong-Mei Bao Jian Gao 2011Chinese Journal of Cancer2011,30,9:18
17Genome-wide identification, expression analysis of auxin-responsive GH_3 family genes in maize(Zea mays L.) under abiotic stresses显示文摘Auxin is involved in different aspects of plant growth and development by regulating the expression of auxinresponsive family genes. As one of the three major auxinresponsive families, GH3(Gretchen Hagen3) genes participate in auxin homeostasis by catalyzing auxin conjugation and bounding free indole-3-acetic acid(IAA) to amino acids.However, how GH3 genes function in responses to abiotic stresses and various hormones in maize is largely unknown.Here, the latest updated maize(Zea mays L.) reference genome sequence was used to characterize and analyze the Zm GH3 family genes from maize. The results showed that 13 Zm GH3 genes were mapped on fi ve maize chromosomes(total10 chromosomes). Highly diversi fi ed gene structures and tissue-speci fi c expression patterns suggested the possibility of function diversi fi cation for these genes in response to environmental stresses and hormone stimuli. The expression patterns of Zm GH3 genes are responsive to several abiotic stresses(salt, drought and cadmium) and major stress-relatedhormones(abscisic acid, salicylic acid and jasmonic acid)Various environmental factors suppress auxin free IAA contents in maize roots suggesting that these abiotic stresses and hormones might alter GH3-mediated auxin levels. The respon siveness of Zm GH3 genes to a wide range of abiotic stresses and stress-related hormones suggested that Zm GH3 s are involved in maize tolerance to environmental stresses.Shangguo Feng Runqing Yue Sun Tao Yanjun Yang Lei Zhang Mingfeng Xu Huizhong Wang Chenjia Shen 2015Journal of Integrative Plant Biology2015,57,9:17
18Mesenchymal stem cells transplantation suppresses inflammatory responses in global cerebral ischemla. contribution of TNF-α-induced protein 6显示文摘Qing-ming LIN 2013Acta Pharmacologica Sinica2013,34,6:16
19Protective effect of ginsenoside Rg1 on glutamate-induced lung injury显示文摘瞄准:检验人参皂甙 Rg1 的可能的保护的效果,人参的 activecomponent,在肺上,损害在 vivo.Methods 由 glutamate 引起了:鼠标 receivingglutamate ( 0.5 g/kg )或经由肺的 intraperitoneal 管理 werecollected.The 索引的人参皂甙 Rgl ( 0.03 g/kg )的肺弄湿weight/身体重量比率( LW/BW ),肺湿/干燥的重量比率( W/D ),心率( HR ),并且呼吸率( BR )是氮的氧化物 synthase ( NOS )的 determined.The 活动,黄质 oxidase ( XOD ), superoxide dismutase (草皮),过氧化氢酶(猫),内容没有,在肺 homogenate 的 andmalondialdehyde 是 measured.Results :在肺 homogenate 的 glutamate injection.An 分析表明了 theprotective 以前,有为 2 hincreased LW/BW , W/D , HR ,和 BR.These 变化的 glutamate 的处理被预告的处理将近为 30 min 与 ginsenosideRg1 废除由抑制证实了的效果 NOS (12%)和 XOD (50%)迟钝,草皮(20%)和猫(25%)的 enhancedactivity .Conclusion :人参皂甙 Rgl 有疾病与 glutamate 毒性联系了的潜在的保护的角色 inlung。Li SHEN Jian-zhong HAN Chen LI Shao-jie YUE Yong LIU Xiao-qun QIN Hui-jun LIU Zi-qiang LUO 2007Acta Pharmacologica Sinica2007,28,3:16
20Mechanical properties of hot-pressed high-entropy diboride-based ceramics显示文摘High-entropy ceramics attract more and more attention in recent years.However,mechanical properties especially strength and fracture toughness for high-entropy ceramics and their composites have not been comprehensively reported.In this work,high-entropy(Ti0.2Zr0.2Hf0.2Nb0.2Ta 0.2)B2(HEB)monolithic and its composite containing 20 vol%SiC(HEB–20SiC)are prepared by hot pressing.The addition of SiC not only accelerates the densification process but also refines the microstructure of HEB,resulting in improved mechanical properties.The obtained dense HEB and HEB–20SiC ceramics hot pressed at 1800℃exhibit four-point flexural strength of 339±17 MPa and 447±45 MPa,and fracture toughness of 3.81±0.40 MPa·m1/2 and 4.85±0.33 MPa·m1/2 measured by single-edge notched beam(SENB)technique.Crack deflection and branching by SiC particles is considered to be the main toughening mechanisms for the HEB–20SiC composite.The hardness Hv0.2 of the sintered HEB and HEB–20SiC ceramics is 23.7±0.7 GPa and 24.8±1.2 GPa,respectively.With the increase of indentation load,the hardness of the sintered ceramics decreases rapidly until the load reaches about 49 N,due to the indentation size effect.Based on the current experimental investigation it can be seen that the room temperature bending strength and fracture toughness of the high-entropy diboride ceramics are within ranges commonly observed in structure ceramics.Ji-Xuan Liu Xiao-Qin Shen Yue Wu Fei Li Yongcheng Liang Guo-Jun Zhang 2020Journal of Advanced Ceramics2020,9,4:16
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