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Effect of TiO_2 content on the microwave dielectric properties of BaO-ZnO-TiO_2 ceramics

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Science China(Technological Sciences) 2011年第6期54卷 1532-1536页

作者： YU ShengQuan LONG mingzhu tang Bin ZHANG ShuRen ZHOU XiaoHua State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China

In this paper,the BaO-0.6ZnO-xTiO2 ceramics with x=2.5-2.8 have been prepared by the conventional solid-state ceramic route for the purpose of investigating the effect of TiO2 content on the microwave dielectric *** XRD results showed that the main crystal phase in the sintered ceramics was Ba4ZnTi11O27 and that the additional phases:Ba2ZnTi5O13 and BaZn2.03Ti3.93O10.89 were presented,depending on the TiO2 *** SEM photographs of the samples sintered at 1200℃ for 2 h showed a high compact *** the phase composition of ceramics samples was changed with TiO2 content,the dielectric constant(εr),the quality factor values(Q×f) and the temperature coefficient of resonant frequency(τf) were first increased,continuously came up to a peak value,and then let *** was lucky to find that the sample with composition BaO-0.6ZnO-2.7TiO2 had both the maximum dielectric constant εr=36.1 and the maximum Q×f value of 29320 GHz,and more importantly,it had an acceptable temperature coefficient of resonant frequency τf=10.45 ppm/℃.

关键词： dielectric properties microwave ceramics sintering BaO-ZnO-TiO2

Pollution characteristics and ecological risk assessment of glucocorticoids in the Jiangsu section of the Yangtze River Basin

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FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 2024年第11期18卷 143页

作者： Tan, Lichao Xu, Keke Zhang, Shengxin tang, Fukai Zhang, mingzhu Ge, Feng Zhang, Kegui Minist Ecol & Environm Peoples Republ China Nanjing Inst Environm Sci Nanjing 210042 Peoples R China Minist Ecol & Environm Peoples Republ China Key Lab Pesticide Environm Assessment & Pollut Con Nanjing 210042 Peoples R China

Glucocorticoids, which are one of the most extensively used steroid hormones, are typical endocrine disruptors. In recent years, glucocorticoids have been widely detected in surface waters such as rivers and lakes, but there are relatively few studies focusing on their ecological risk assessment. In this study, the pollution characteristics of seven glucocorticoids were studied in the Jiangsu section of the Yangtze River Basin, and ecological risk assessments were performed using the risk quotient method. The results showed that seven glucocorticoids were detected at different levels at eight sampling sites. Among these glucocorticoids, prednisone had the highest value of 238.27 ng/L in the wet season, with pollution levels significantly higher than those reported in other areas. The ecological risk evaluation showed that prednisone, prednisolone, dexamethasone, and hydrocortisone acetate all had risk quotient values greater than 1 in the studied water environment, posing a high ecological risk. This study provides a scientific foundation for the in-depth study of the pollution characteristics and ecological risk of glucocorticoids in water bodies in the Jiangsu section of the Yangtze River Basin.

关键词： Yangtze River Basin Glucocorticoids Pollution characteristics Ecological risk assessment

Innovative discontinuous-SEI constructed in ether-based electrolyte to maximize the capacity of hard carbon anode

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Journal of Energy Chemistry 2023年第4期79卷 459-467页

作者： Fanghong Zeng Lidan Xing Wenguang Zhang Zhangyating Xie mingzhu Liu Xiaoyan Lin Guangxia tang Changyong Mo Weishan Li Engineering Research Center of MTEES(Ministry of Education) Research Center of BMET(Guangdong Province)Engineering Lab.of OFMHEB(Guangdong Province)Key Lab.of ETESPG(GHEI)and Innovative Platform for ITBMD(Guangzhou Municipality)School of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina

Compared with graphite,the lower sodiation potential and larger discharge capacity of hard carbon(HC)makes it the most promising anode material for sodium-ion *** ether-based electrolyte rather than conventional carbonate-based electrolyte,HC achieves superior electrochemical ***,the mechanism by which ether-based electrolyte improves the properties of HC is still controversial,primarily focusing on whether it forms solid electrolyte interphase(SEI)*** this work,according to the sodium storage mechanisms in HC at low voltage(<0.1 V),including Na^(+)-diglyme co-interaction into the carbon layer(SEI forbidden)and desolvated Na^(+)insertion in the irregular carbon holes(SEI required),the NaPF6concentration in ether-based electrolyte was regulated,so as to construct a discontinuous-SEI on the surface of the HC anode,which significantly enhances the electrochemical performances of ***,with 0.2 M NaPF6ether-based electrolyte,HC deliverers a discharge capacity of 459.7 mA h g^(-1)at 0.1 C and stays at 357.2 mA h g^(-1)after 500 cycles at 1 C,which is substantially higher than that of higher/lower salt concentration electrolytes.

关键词： Sodium ion battery Hard carbon Ether-based electrolyte SEI/SEI-free

压力对TlPb_xBaCa_3Cu_3O超导电性的影响

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高压物理学报 1989年第3期3卷 241-245页

作者：刘振兴林明柱唐明华孟宪仁林振金桑莉华涂清云韩卫任燕如中国科学院物理研究所北京师范大学物理系

在本电阻温度T_(C zero)达120K的TIBaCa_3Cu_3O_y超导体中,掺入不同含量的Pb后,超导电性受到抑制,点阵常数减小。加压时,T_C先随压力 p的增加而上升,样品 1(x_(Pb)=0.05)的dT_(Cz)/dp=1.7K/GPa,样品2(x_(Pb)=0.5)的dT_(Cz)/dp=2.2 K/GPa... 详细信息

关键词：铊氧化物超导体超导电性铅

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中西医结合治疗慢性萎缩性胃炎的研究进展

当代医药论丛 2023年第9期21卷 23-25页

作者：赵祺吕培华吴红林李勇汤明珠屈豪袁露徐阳湖北民族大学湖北恩施445000 荆门市中医医院湖北荆门448000

慢性萎缩性胃炎是以腹部隐痛、痞满、嗳气、嘈杂、反酸等症状为主的消化系统疾病。本病是一种常见的临床疾病,目前尚未彻底阐明其病因,临床上也没有特效药物。近几年的研究发现,中药及中药联合西医疗法可以缓解胃黏膜萎缩和肠上皮化生,... 详细信息

慢性萎缩性胃炎是以腹部隐痛、痞满、嗳气、嘈杂、反酸等症状为主的消化系统疾病。本病是一种常见的临床疾病,目前尚未彻底阐明其病因,临床上也没有特效药物。近几年的研究发现,中药及中药联合西医疗法可以缓解胃黏膜萎缩和肠上皮化生,并可减缓甚至逆转胃黏膜萎缩。为改善慢性萎缩性胃炎患者的生活质量,许多医家都开展了深入的研究,并认为本病的治疗应从病机、病因等方面着手。本文就中西医结合治疗慢性萎缩性胃炎的研究进展进行综述,以寻求安全有效的治疗方法。

关键词：慢性萎缩性胃炎中西医结合病因研究进展

Dynamic UAV Phenotyping for Rice Disease Resistance Analysis Based on Multisource Data

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Plant Phenomics 2023年第1期5卷 110-122页

作者： Xiulin Bai Hui Fang Yong He Jinnuo Zhang mingzhu Tao Qingguan Wu Guofeng Yang Yuzhen Wei Yu tang Lie tang Binggan Lou Shuiguang Deng Yong Yang Xuping Feng College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Huzhou Institute of Zhejiang University Huzhou 313000China School of Information Engineering Huzhou UniversityHuzhou 313000China Academy of Interdisciplinary Studies Guangdong Polytechnic Normal UniversityGuangzhou 510665China Department of Agricultural and Biosystems Engineering Iowa State UniversityAmesIA 50011-3270USA College of Agriculture and Biotechnology Zhejiang UniversityHangzhou 310058China College of Computer Science and Technology Zhejiang UniversityHangzhou 310058China State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products Key Laboratory of Biotechnology for Plant ProtectionMinistry of Agricultureand Rural AffairsZhejiang Provincial Key Laboratory of Biotechnology for Plant ProtectionInstitute of Virology and BiotechnologyZhejiang Academy of Agricultural ScienceHangzhou 31002China

Bacterial blight poses a threat to rice production and food security,which can be controlled through large-scale breeding efforts toward resistant *** aerial vehicle(UAV)remote sensing provides an alternative means for the infield phenotype evaluation of crop disease resistance to relatively time-consuming and laborious traditional ***,the quality of data acquired by UAV can be affected by several factors such as weather,crop growth period,and geographical location,which can limit their utility for the detection of crop disease and resistant ***,a more effective use of UAV data for crop disease phenotype analysis is *** this paper,we used time series UAV remote sensing data together with accumulated temperature data to train the rice bacterial blight severity evaluation *** best results obtained with the predictive model showed an R_(p)^(2) of 0.86 with an RMSE_(p) of ***,model updating strategy was used to explore the scalability of the established model in different geographical *** percent of transferred data for model training was useful for the evaluation of disease severity over different *** addition,the method for phenotypic analysis of rice disease we built here was combined with quantitative trait loci(QTL)analysis to identify resistance QTL in genetic populations at different growth *** new QTLs were identified,and QTLs identified at different growth stages were *** analysis combined with UAV high-throughput phenotyping provides new ideas for accelerating disease resistance breeding.

关键词： blight breeding cultivar

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不同亚型HPV感染与女性宫颈疾病的相关性

分子诊断与治疗杂志 2017年第3期9卷 196-200页

作者：梁艳华毕超梁景耀唐明珠王焕丽邓斌宋卫忠广东省广州市皮肤病防治所广东广州510095 广州达安临床检验中心广东广州510000

目的探讨不同亚型HPV感染与女性宫颈疾病的相关性。方法选取本所2015年3月至2016年4月的2 360例宫颈疾病患者进行21种亚型HPV检测,其中包括5种低危亚型(LR-HPV)和16种高危亚型(HR-HPV),同时根据宫颈病病理活检结果将宫颈疾病患者分为3组... 详细信息

目的探讨不同亚型HPV感染与女性宫颈疾病的相关性。方法选取本所2015年3月至2016年4月的2 360例宫颈疾病患者进行21种亚型HPV检测,其中包括5种低危亚型(LR-HPV)和16种高危亚型(HR-HPV),同时根据宫颈病病理活检结果将宫颈疾病患者分为3组,宫颈炎组217例,宫颈上皮内瘤变(CIN)组118例,宫颈癌组36例。比较不同亚型HPV感染与女性宫颈疾病发病的关系。结果本研究中的2 360例宫颈疾病患者中检测到HPV阳性患者371例,阳性率为15.7%,其中HPV单一感染203例(54.7%),多重感染168例(45.3%)。宫颈炎患者组HPV感染以HPV16(68.7%),HPV52(13.0%),HPV31(5.2%),HPV11(3.5%)亚型为主,CIN组HPV感染以HPV6(69.2%),HPV33(6.2%),HPV52(6.2%),HPV58(6.2%)亚型为主,宫颈癌组HPV感染以HPV 16(65.2%),HPV53(13.0%),HPV58(8.7%),HPV56(8.7%)亚型为主;HPV16型感染和HPV11型感染为导致宫颈炎发生的危险因素(P<0.01),HPV6型感染和HPV52型感染为导致CIN发生的危险因素(P<0.01),HPV16型感染和HPV58型感染为导致宫颈癌发生的危险因素(P<0.01)。结论高危型HPV是导致宫颈癌,宫颈炎发生的危险因素,低危型HPV是导致CIN发生的危险因素,HPV分型与宫颈疾病的发生具有密切相关性。

关键词：亚型 HPV 宫颈病变人乳头癌病毒

Inhibitory effect of synthetic small interfering RNAs on glial fibrillary acidic expression in astrocytes

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Neural Regeneration Research 2008年第9期3卷 950-953页

作者： mingzhu Zhang Qing Zhao Xin tang Guangrong Yu Department of Orthopedics First Affiliated Hospital of Dalian Medical University Dalian 116011 Liaoning Province China Depratment of Orthopedics Tongji Hospital of Tongji University Shanghai 200065 China

BACKGROUND： Glial fibritlary acidic protein （GFAP） expression highly correlates with spinal glial scar formation, and is regarded as an important target for scar therapy. Efficient inhibition of expression could benefit recovery from spinal cord injury. OBJECTIVE： To investigate the inhibitory effects of synthetic small interfering RNAs （siRNAs） on astrocytic GFAP expression in rats. DESIGN, TIME AND SETTING： A randomized, controlled, animal experiment at the cellular and molecular level was performed at the First Hospital of Dalian Medical University between June 2005 and February 2006. MATERIALS： A total of 100 seven-day-old, Sprague Dawley rats were selected. GAPDH siRNA was purchased from Ambion, USA, And TransMessengerTM Transfection Reagent from DAKO, Carpinteria, CA. METHODS： Rat astrocytes were isolated and cultured. Three pairs of 21-nucleotide （nt） siRNAs specific to rats GFAP mRNA, 401,404 and 854, were synthesized and transfected in primary astrocytes at 1, 2, 3, and 4 g/L using TransMessengerTM Transfection Reagent. Non-transfected astrocytes served as the blank group. Cells transfected with siRNA were regarded as the negative control group, with GAPDH siRNA as the positive control group, and 401 siRNA, 404 siRNA, and 854 siRNA as experimental groups. MAIN OUTCOME MEASURES： GFAP mRNA and protein expression were assessed by RT-PCR and Western blot, respectively, at 24, 48, and 72 hours of culture. RESULTS： GFAP mRNA expression in the positive control group was significantly less than the negative control group （P 〈 0.01）. GFAP mRNA expression in astrocytes from three pairs of siRNA was significantly less than the blank group after 48 hours （P 〈 0.01 ）, while no differences were detected between the negative control and blank groups （P 〉 0.05）. GFAP protein expression was remarkably less in siRNA-transfected astrocytes compared to the blank control （P 〈 0.01 ）. CONCLUSION： Transfected siRNAs could significantly inhibit GFAP gene expression in astrocytes a

关键词： glial fibrillary acidic protein RNA interference spinal cord injury

The coverage and challenges of increasing uptake of non-National Immunization Program vaccines in China:a scoping review

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Infectious Diseases of Poverty 2023年第6期12卷 19-33页

作者： mingzhu Jiang Shu Chen Xuanxuan Yan Xiaohua Ying Shenglan tang School of Public Health Fudan University130 Dong’an RoadXuhui DistrictShanghai 200032China Australian Research Council Centre of Excellence in Population Ageing Research(CEPAR) University of New South WalesSydneyAustralia School of Risk and Actuarial Studies University of New South WalesSydneyAustralia Global Health Research Center Duke Kunshan UniversityKunshanJiangsuChina SingHealth Duke-NUS Global Health Institute Duke-NUSSingaporeSingapore Duke Global Health Institute Duke UniversityDurhamUSA

Background Non-National Immunization Program (NIP) vaccines have played an important role in controlling vaccine-preventable diseases (VPDs) in China. However, these vaccines are paid out of pocket and there is room to increase their coverage. We focused on four selected non-NIP vaccines in this study, namely Haemophilus influenzae type b (Hib) vaccine, human papillomavirus (HPV) vaccine, pneumococcal conjugate vaccine (PCV), and rotavirus vaccine. We aimed to conduct a scoping review of their vaccination rates and the major barriers faced by health systems, providers, and caregivers to increase *** We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR). We searched five English databases (PubMed, Web of Science, EMBASE, Scopus, and WHO IRIS) and four Chinese databases using the search strategy developed by the study team. Two independent reviewers screened, selected studies, and examined their quality. We summarized the non-NIP vaccine coverage data by vaccine and applied the 5A framework (Access, Affordability, Acceptance, Awareness, Activation) to chart and analyze barriers to increasing *** A total of 28 articles were included in the analysis (nine pertaining to vaccine coverage, and another 19 reporting challenges of increasing uptake). Among the four selected vaccines, coverage for the Hib vaccine was the highest (54.9-55.9% for 1 dose or more from two meta-analyses) in 2016, while the coverage of the other three vaccines was lower than 30%. Eight of the nine included articles mentioned the regional disparity of coverage, which was lower in under-developing regions. For example, the three-dose Hib vaccination rate in eastern provinces was 38.1%, whereas the rate in central and western provinces was 34.3% and 26.2%, respectively in 2017. Within the 5A framework, acceptance, awareness, and affordability stood out as the most prominent themes. Among the 12 identified

关键词： Non-National Immunization Program vaccines HPV Hib PCV Rotavirus Coverage Uptake Barriers Challenges