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基于自主可控平台的FFMPEG在线视频转换系统 预览
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作者 阿不都克里木·玉素甫 王亮亮 《计算机与现代化》 2020年第1期81-84,116,共5页
作为自主可控平台技术研究的一部分,为嵌入式平台提供在线视频格式转换服务和视频编码处理环境,研究与实现一种基于自主可控平台的FFMPEG在线视频转换系统。本文主要设计系统框架,搭建系统运行环境,并对系统相关核心功能模块的实现方法... 作为自主可控平台技术研究的一部分,为嵌入式平台提供在线视频格式转换服务和视频编码处理环境,研究与实现一种基于自主可控平台的FFMPEG在线视频转换系统。本文主要设计系统框架,搭建系统运行环境,并对系统相关核心功能模块的实现方法进行研究。核心模块包括视频上传模块,Socket服务模块,视频转换、压缩、注入关键帧模块以及视频播放模块等。最后为了测试在线视频转换系统的功能和性能做了一个实验。实验表明系统可支持批量上传、转换、压缩大容量视频文件,可支持不同视频文件格式的转换,并且客户端播放器支持视频进度条的随意拖动播放。 展开更多
关键词 FFMPEG SOCKET 多线程 关键帧 B/S
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Microglial cathepsin B as a key driver of inflammatory brain diseases and brain aging 预览
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作者 Hiroshi Nakanishi 《中国神经再生研究:英文版》 SCIE CAS CSCD 2020年第1期25-29,共5页
Interleukin-1βis a potent proinflammatory cytokine that plays a key role in the pathogenesis of the brain aging and diverse range of neurological diseases including Alzheimer’s disease,Parkinson’s disease,stroke an... Interleukin-1βis a potent proinflammatory cytokine that plays a key role in the pathogenesis of the brain aging and diverse range of neurological diseases including Alzheimer’s disease,Parkinson’s disease,stroke and persistent pain.Activated microglia are the main cellular source of interleukin-1βin the brain.Cathepsin B is associated with the production and secretion of interleukin-1βthrough pyrin domain-containing protein 3 inflammasome-independent processing of procaspase-3 in the phagolysosomes.The leakage of cathepsin B from the endosomal-lysosomal system during aging is associated with the proteolytic degradation of mitochondrial transcription factor A,which can stabilize mitochondrial DNA.Therefore,microglial cathepsin B could function as a major driver for inflammatory brain diseases and brain aging.Orally active and blood-brain barrier-permeable specific inhibitors for cathepsin B can be potentially effective new pharmaceutical interventions against inflammatory brain diseases and brain aging. 展开更多
关键词 BRAIN aging caspase-1 CATHEPSIN B INFLAMMATORY BRAIN diseases INTERLEUKIN-1Β microglia mitochondrial transcription FACTOR A neuroinflammation nuclear factor-κB oxidative stress
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基于“互联网+”的全流程智慧住院系统设计与应用 预览
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作者 刘晓龙 万振 +1 位作者 孙昕 史鹏飞 《医疗卫生装备》 CAS 2020年第1期29-33,共5页
目的:设计一个基于“互联网+”的全流程智慧住院系统,对传统住院方式进行改革,打造全流程“智慧住院”模式,形成合理的闭环管理体系,为住院患者提供智能化、便捷化服务。方法:采用SQL Server 2008 R2数据库,使用Java、Swift等编程语言,... 目的:设计一个基于“互联网+”的全流程智慧住院系统,对传统住院方式进行改革,打造全流程“智慧住院”模式,形成合理的闭环管理体系,为住院患者提供智能化、便捷化服务。方法:采用SQL Server 2008 R2数据库,使用Java、Swift等编程语言,搭建浏览器/服务器(Browser/Server,B/S)架构,实现包括入院管理(事前入院数据准备阶段)、在院管理(事中在院治疗阶段)和出院管理(事后出院信息处理、查询及沟通阶段)3个模块的基于“互联网+”的全流程智慧住院系统。使用防火墙、网闸、专线等方式,安全打通内网与外网数据的传输通道,同时设置DMZ(demilitarized zone)内外网缓冲区保护院内网络安全,通过银行专线与银联之间进行数据交换。结果:基于“互联网+”的全流程智慧住院系统有效解决了患者办理住院时的排队、等候现象,实现了分流管理的目标,打通了医院各分散系统、模块之间的壁垒,使信息高度共享。结论:基于“互联网+”的全流程智慧住院系统节约了患者的时间成本,提高了就医体验与医疗服务质量,值得向其他医疗机构推广。 展开更多
关键词 互联网+ 智慧住院系统 B/S 信息共享 分流管理
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基于B/S的空管自动化综合航迹显示系统的设计与实现 预览
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作者 牛一波 《中国民航飞行学院学报》 2020年第1期68-70,73,共4页
提出一种基于B/S的综合航迹显示系统,该系统通过解析空管自动化系统的综合航迹实现了在IE浏览器上对区域内的航迹的监视。系统实现主要包括三部分:一是综合航迹的接收,主要通过对同步串口卡的数据读取;二是对数据的数据库处理;三是对综... 提出一种基于B/S的综合航迹显示系统,该系统通过解析空管自动化系统的综合航迹实现了在IE浏览器上对区域内的航迹的监视。系统实现主要包括三部分:一是综合航迹的接收,主要通过对同步串口卡的数据读取;二是对数据的数据库处理;三是对综合航迹的显示。系统实现了对MH4008003类数据的解析以及对空管自动化系统的地图解析,并且在IE界面上提供了航迹态势显示以及用户交互接口。 展开更多
关键词 空管 B/S 监视
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基于大数据的高校教务管理平台设计 预览
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作者 鲁志芳 《微型电脑应用》 2020年第1期11-14,共4页
针对当前高等院校教务管理信息系统运行中面临数据爆炸的挑战,基于系统工程理论,采用大数据技术设计了新型的教务信息系统。在仔细分析教务管理工作流程的基础上,从用户的角度出发,将系统划分为学籍管理、教师管理等8大功能模块。为了... 针对当前高等院校教务管理信息系统运行中面临数据爆炸的挑战,基于系统工程理论,采用大数据技术设计了新型的教务信息系统。在仔细分析教务管理工作流程的基础上,从用户的角度出发,将系统划分为学籍管理、教师管理等8大功能模块。为了提升系统的易用性与便捷性,系统采用C/S和B/S混合架构实现。在设计数据库时引入了数据库连接池机制,降低了因数据库的连接和断开而造成的时间损耗,提升了约30%的系统响应速度。此外,还优化了系统内各个实体的信息数据表,降低了数据存储所需的空间。运行结果表明,本系统可以满足教务管理工作中的数据增长需求。 展开更多
关键词 大数据 教务管理 C/S架构 B/S架构
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Bacterial infection triggers and complicates acute-on-chronic liver failure in patients with hepatitis B virus-decompensated cirrhosis:A retrospective cohort study 预览
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作者 Zhu-Jun Cao Yu-Han Liu +13 位作者 Chuan-Wu Zhu Shan Yin Wei-Jing Wang Wei-Liang Tang Gang-De Zhao Yu-Min Xu Lu Chen Tian-Hui Zhou Ming-Hao Cai Hui Wang Wei Cai Shi-San Bao Hai Li Qing Xie 《世界胃肠病学杂志:英文版》 SCIE CAS 2020年第6期645-656,共12页
BACKGROUND Reports on bacterial infection(BI)in decompensated cirrhosis(DC)is mainly from alcoholic cirrhosis.The role of BI as a trigger or complication of acute-onchronic liver failure(ACLF)in patients with hepatiti... BACKGROUND Reports on bacterial infection(BI)in decompensated cirrhosis(DC)is mainly from alcoholic cirrhosis.The role of BI as a trigger or complication of acute-onchronic liver failure(ACLF)in patients with hepatitis B virus decompensated cirrhosis(HBV-DC)remains to be investigated.AIM To investigate the impact of BI on the outcomes of the patients with HBV-DC admitted into the hospital with or without ACLF.METHODS This retrospective study included patients with HBV-DC admitted to two tertiary centers in China.In-hospital overall survival,90-d transplant-free survival,5-year post-discharge survival,and cumulative incidence of ACLF were evaluated.Risk factors for death were analyzed considering liver transplantation as a competing event.RESULTS A total of 1281 hospitalized HBV-DC patients were included;284 had ACLF at admission.The overall prevalence of BI was 28.1%.The patients with BI had a significantly lower in-hospital survival and transplant-free 90-d survival than those without,in both the patients admitted with and without ACLF.The presence of BI significantly increased the risk of developing ACLF[subdistribution hazard ratio(sHR)=2.52,95%CI:1.75-3.61,P<0.001]in the patients without ACLF.In the patients discharged alive,those who had an episode of BI had a significantly lower 5-year transplant-free survival.BI was an independent risk factor for death in the patients admitted without ACLF(sHR=3.28,95%CI:1.93-5.57),while in ACLF admissions,the presence of pneumonia,but not other type of BI,independently increased the risk of death(sHR=1.87,95%CI:1.24-2.82).CONCLUSION BI triggers ACLF in patients with HBV-DC and significantly impairs short-term survival.HBV-DC patients should be monitored carefully for the development of BI,especially pneumonia,to avoid an adverse outcome. 展开更多
关键词 Hepatitis B virus CIRRHOSIS DECOMPENSATION Bacterial infection Acute-onchronic liver failure SURVIVAL
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测测你是哪种“动物爸爸”
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作者 马志国 《中华家教》 2020年第1期86-88,共3页
以下是孩子成长过程中时常遇到的问题。请依据自己对待孩子的实际情况,从A.B.C三个答案中,选出一个填在括号内。(无须过多考虑,看后即答。)问题:1.当孩子跌倒哭泣时:()A.不去理会。B.稍微看一下情况。C.立即跟过去,将他抱起来。
关键词 B. () A.
Highlights of ASS234:a novel and promising therapeutic agent for Alzheimer’s disease therapy 预览
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作者 Alejandro Romero JoséMarco-Contelles Eva Ramos 《中国神经再生研究:英文版》 SCIE CAS CSCD 2020年第1期30-35,共6页
There is no effective treatment to face Alzheimer’s disease complexity.Multitarget molecules are a good approach against the multiple physiopathological events associated with its development and progression.In this ... There is no effective treatment to face Alzheimer’s disease complexity.Multitarget molecules are a good approach against the multiple physiopathological events associated with its development and progression.In this context,N-((5-(3-(1-benzylpiperidin-4-yl)propoxy)-1-methyl-1H-indol-2-yl)methyl)-N-methylprop-2-yn-1-amine(ASS234)has been tested achieving promising results.ASS234 has demonstrated to cross the blood-brain barrier in vivo,and a good in silico safety profile being less toxic than donepezil.Besides,ASS234 reversibly inhibits human acetyl-and butyryl-cholinesterase,and irreversibly inhibits human monoamine oxidase A and B.Moreover,this multitarget molecule has antioxidant and neuroprotective properties,and inhibitsΑβ1–42 andΑβ1–40 self-aggregation.Inquiring about the mechanism of action,several signaling pathways related to Alzheimer’s disease had been explored showing that ASS234 induces the wingless-type MMTV integration site(Wnt)family and several members of the heat shock proteins family and moreover counteracts neuroinflammatory and oxidative stress-related genes promoting the induction of several key antioxidant genes.Finally,in vivo experiments with ASS234 in C57BL/6J mice displayed its ability to reduce amyloid plaque burden and gliosis in the cortex and hippocampus,ameliorating scopolamine-induced learning deficits.Here we gather the information regarding ASS234 evaluated so far,showing its ability to face different targets,necessary to counteract a neurodegenerative disease as complex as the Alzheimer’s disease. 展开更多
关键词 ACHE BuChE gene expression heat shock proteins inflammation in silico TOXICOLOGY MAO A/B NEUROPROTECTION oxidative stress Wnt signaling
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我院2015~2017年麻醉药品使用情况分析 预览
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作者 沈倩 柏蓉 +2 位作者 鲍丽琴 赵萍 陆秀芬 《海峡药学》 2020年第1期197-199,共3页
目的为临床合理使用麻醉药品提供参考。方法利用医院信息系统获取我院2015~2017年麻醉药品数据,对药品用量、销售金额、用药频度(DDDs)、日均费用(DDC)、排序比(B/A)进行统计分析。结果我院麻醉药品销售金额呈逐年下降趋势,其中芬太尼... 目的为临床合理使用麻醉药品提供参考。方法利用医院信息系统获取我院2015~2017年麻醉药品数据,对药品用量、销售金额、用药频度(DDDs)、日均费用(DDC)、排序比(B/A)进行统计分析。结果我院麻醉药品销售金额呈逐年下降趋势,其中芬太尼透皮贴剂销售金额下降最为明显。芬太尼透皮贴、吗啡缓释片、羟考酮缓释片的使用量一直位列前三位。麻醉药品的DDC在这三年里基本未变,药品价格稳定。大部分药品的B/A等于或接近1,同步性较好。结论我院麻醉药品使用基本合理,但仍需严格监管。 展开更多
关键词 麻醉药品 DDDS DDC B/A 合理用药
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Reactivation of hepatitis B virus infection in patients with hemolymphoproliferative diseases,and its prevention 预览
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作者 Caterina Sagnelli Mariantonietta Pisaturo +3 位作者 Federica Calo Salvatore Martini Evangelista Sagnelli Nicola Coppola 《世界胃肠病学杂志:英文版》 SCIE CAS 2019年第26期3299-3312,共14页
Reactivation of hepatitis B virus(HBV)replication is characterized by increased HBV-DNA serum values of about 1 log or by HBV DNA turning positive if previously undetectable in serum,possibly associated with liver dam... Reactivation of hepatitis B virus(HBV)replication is characterized by increased HBV-DNA serum values of about 1 log or by HBV DNA turning positive if previously undetectable in serum,possibly associated with liver damage and seldom life-threatening.Due to HBV reactivation,hepatitis B surface antigen(HBsAg)-negative/anti-HBc-positive subjects may revert to HBsAg-positive.In patients with hemo-lymphoproliferative disease,the frequency of HBV reactivation depends on the type of lymphoproliferative disorder,the individual's HBV serological status and the potency and duration of immunosuppression.In particular,it occurs in 10%-50%of the HBsAg-positive and in 2%-25%of the HBsAg-negative/anti-HBc-positive,the highest incidences being registered in patients receiving rituximab-based therapy.HBV reactivation can be prevented by accurate screening of patients at risk and by a pharmacological prophylaxis with anti-HBV nucleo(t)sides starting 2-3 wk before the beginning of immunosuppressive treatment and covering the entire period of administration of immunosuppressive drugs and a long subsequent period,the duration of which depends substantially on the degree of immunodepression achieved.Patients with significant HBV replication before immunosuppressive therapy should receive anti-HBV nucleo(t)sides as a long-term(may be life-long)treatment.This review article is mainly directed to doctors engaged every day in the treatment of patients with onco-lymphoproliferative diseases,so that they can broaden their knowledge on HBV infection and on its reactivation induced by the drugs with high immunosuppressive potential that they use in the care of their patients. 展开更多
关键词 HEPATITIS B VIRUS REACTIVATION HEPATITIS B VIRUS infection Hemolymphoproliferative DISEASES IMMUNOSUPPRESSIVE THERAPY HEPATITIS B VIRUS THERAPY HEPATITIS B VIRUS prophylasis
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基于SSH的校园水果直销平台的设计与实现 预览
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作者 王亚坤 《电脑知识与技术:学术版》 2019年第8期285-287,共3页
随着互联网的发展,线上交易已进入人们生活,人们已经习惯了享受送货上门的服务。在如此背景下,传统的水果交易也亟待转型,本文将利用SSH框架和B/S技术实现校园线上水果直销平台,使用B2C模式实现水果交易的高效运作,旨在冲破传统水果交... 随着互联网的发展,线上交易已进入人们生活,人们已经习惯了享受送货上门的服务。在如此背景下,传统的水果交易也亟待转型,本文将利用SSH框架和B/S技术实现校园线上水果直销平台,使用B2C模式实现水果交易的高效运作,旨在冲破传统水果交易的时间限制,减少商品的周转次数,减轻商品损坏,降低成本,提高利润。 展开更多
关键词 互联网 线上交易 SSH B/S B2C
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Towards the worldwide eradication of hepatitis B virus infection:A combination of prophylactic and therapeutic factors 预览
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作者 Caterina Sagnelli Evangelista Sagnelli 《世界临床传染病学杂志》 2019年第2期11-22,共12页
Hepatitis B virus(HBV)is still a global health problem,mostly because of the intermediate/high rates of HBV chronic carriers living in most Asian,African and eastern European countries.The universal HBV vaccination of... Hepatitis B virus(HBV)is still a global health problem,mostly because of the intermediate/high rates of HBV chronic carriers living in most Asian,African and eastern European countries.The universal HBV vaccination of new-borns undertaken in most nations over the last 3 decades and effective HBV antiviral treatments(nucleos(t)ide analogue with high genetic barrier to viral resistance)introduced in the last decade have shown their beneficial effects in inducing a clear reduction of HBV endemicity in the countries where they have been extensively applied.Great hopes are now placed on new antiviral and immunotherapeutic drugs that are now at an advanced stage of study.It is in fact already conceivable that the synergistic use of new drugs targeting more than one HBV-lifecycle steps(covalent closed circular DNA destruction/silencing,HBV entry inhibitors,nucleocapsid assembly modulators targeting viral transcripts)and of some new immunotherapeutic agents might eliminate the intrahepatic covalent closed circular DNA and achieve the eradication of HBV infection.In spite of this,a strong effort should be given to extensive educational and screening programs for the at-risk population and to the implementation of HBV vaccination in developing countries. 展开更多
关键词 HEPATITIS B VIRUS Chronic HEPATITIS B infection HEPATITIS B VIRUS prevention VACCINATION
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Construction of a replication-competent hepatitis B virus vector carrying secreted luciferase transgene and establishment of new hepatitis B virus replication and expression cell lines 预览
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作者 Jie Ruan Cai-Yan Ping +4 位作者 Shuo Sun Xin Cheng Peng-Yu Han Yin-Ge Zhang Dian-Xing Sun 《世界胃肠病学杂志:英文版》 SCIE CAS 2019年第39期5961-5972,共12页
BACKGROUND Previously,we have successfully constructed replication-competent hepatitis B virus(HBV)vectors by uncoupling the P open reading frame(ORF)from the preC/C ORF to carefully design the transgene insertion sit... BACKGROUND Previously,we have successfully constructed replication-competent hepatitis B virus(HBV)vectors by uncoupling the P open reading frame(ORF)from the preC/C ORF to carefully design the transgene insertion site to overcome the compact organization of the HBV genome and maintain HBV replication competence.Consequently,the replication-competent HBV vectors carrying foreign genes,including pCH-BsdR,carrying blasticidin resistance gene(399 bp),and pCH-hrGFP,carrying humanized renilla green fluorescent protein gene(720 bp),were successfully obtained.However,the replication efficiency of the former is higher but it is tedious to use,while that of the latter is poor and cannot be quantified.Hence,we need to search for a new reporter gene that is convenient and quantifiable for further research.AIM To establish a helpful tool for intracellular HBV replication and anti-viral drugs screening studies.METHODS We utilized the replication-competent HBV viral vectors constructed by our laboratory,combined with the secreted luciferase reporter gene,to construct replication-competent HBV vectors expressing the reporter gene secretory Nanoluc Luciferase(SecNluc).HepG2.TA2-7 cells were transfected with this vector to obtain cell lines with stably secreted HBV particles carrying secNluc reporter gene.RESULTS The replication-competent HBV vector carrying the SecNluc reporter gene pCHsNLuc could produce all major viral RNAs and a full set of envelope proteins and achieve high-level secreted luciferase expression.HBV replication intermediates could be produced from this vector.Via transfection with pTRE-sNLuc and selection by hygromycin,we obtained isolated cell clones,named HBV-NLuc-35 cells,which could secrete secNLuc recombinant viruses,and were sensitive to existing anti-HBV drugs.Using differentiated HepaRG cells,it was verified that recombinant HBV possessed infectivity.CONCLUSION Our research demonstrated that a replication-competent HBV vector carrying a secreted luciferase transgene possesses replication and expression 展开更多
关键词 HEPATITIS B VIRUS Replication-competent HEPATITIS B VIRUS vector SECRETED LUCIFERASE gene HEPATITIS B VIRUS cell line
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Null links between vitamin B6 and B12 intake and occurrence risk of lung cancer: a meta-analysis 预览
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作者 Li-Ping Shen Rong Li Ya-Juan Cao 《TMR肿瘤》 2019年第4期252-260,共9页
Vitamin B6 and B12 are involved in many biochemical reactions and might play arole in carcinogenesis. We summarized the evidences linking vitamin B6 and B12to occurrence risk of lung cancer and conducted a meta-analys... Vitamin B6 and B12 are involved in many biochemical reactions and might play arole in carcinogenesis. We summarized the evidences linking vitamin B6 and B12to occurrence risk of lung cancer and conducted a meta-analysis of the relationshipbetween vitamin B6 and B12 intake and the risk of lung cancer. Fixed-effectmeta-analysis was used to calculate pooled relative risks (RRs) and their 95%confidence intervals (CIs). We identified four observational studies (participants, n= 206,290;cases, n = 1,134) and three randomized controlled trials (RCTs;participants, n = 97,569;cases, n = 952). Vitamin B6 and B12 supplementary wasnot statistically significantly associated with occurrence risk of lung cancer(124/11926 (1.04%) vs. 73/8497 (0.86%), RR = 1.06, 95% CI = 0.78-1.43, P =0.71). A consistent association was also observed, findings from RCTs did notsupport a protective effect of vitamin B6 and B12intake orally decrease the risk oflung cancer occurrence (HR = 1.13, 95% CI = 0.86-1.50, P = 0.39). For thewomen, there was no confirmed evidence demonstrated vitamin B intake candecrease the occurrence risk of lung cancer across the subgroup analyses (HR =0.96, 95% CI = 0.80-1.16, P = 0.99). Dietary vitamin B6 and B12 intake also hadno influence on occurrence risk of lung cancer in difference doses and intakeduration. In conclusion, no confirmed links were found between vitamin B6 andB12 intake and risk of lung cancer occurrence. 展开更多
关键词 Vitamin B Lung cancer Incidence Vitamin B6 Vitamin B12
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Characterization of hepatitis B virus X gene quasispecies complexity in mono-infection and hepatitis delta virus superinfection 预览
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作者 Cristina Godoy David Tabernero +13 位作者 Sara Sopena Josep Gregori Maria Francesca Cortese Carolina González Rosario Casillas Marcal Yll Ariadna Rando Rosa López-Martínez Josep Quer Gloria González-Aseguinolaza Rafael Esteban Mar Riveiro-Barciela Maria Buti Francisco Rodríguez-Frías 《世界胃肠病学杂志:英文版》 SCIE CAS 2019年第13期1566-1579,共14页
BACKGROUND Hepatitis delta virus (HDV) seems to strongly suppress hepatitis B virus (HBV) replication, although little is known about the mechanism of this interaction. Both these viruses show a dynamic distribution o... BACKGROUND Hepatitis delta virus (HDV) seems to strongly suppress hepatitis B virus (HBV) replication, although little is known about the mechanism of this interaction. Both these viruses show a dynamic distribution of mutants, resulting in viral quasispecies. Next-generation sequencing is a viable approach for analyzing the composition of these mutant spectra. As the regulatory hepatitis B X protein (HBx) is essential for HBV replication, determination of HBV X gene (HBX) quasispecies complexity in HBV/HDV infection compared to HBV monoinfection may provide information on the interactions between these two viruses.AIM To compare HBV quasispecies complexity in the HBX 5’ region between chronic hepatitis delta (CHD) and chronic HBV mono-infected patients. METHODS Twenty-four untreated patients were included: 7/24 (29.2%) with HBeAgnegative chronic HBV infection (CI, previously termed inactive carriers), 8/24 (33.3%) with HBeAg-negative chronic hepatitis B (CHB) and 9/24 (37.5%) with CHD. A serum sample from each patient was first tested for HBV DNA levels. The HBX 5’ region [nucleotides (nt) 1255-1611] was then PCR-amplified for subsequent next-generation sequencing (MiSeq, Illumina, United States). HBV quasispecies complexity in the region analyzed was evaluated using incidencebased indices (number of haplotypes and number of mutations), abundancebased indices (Hill numbers of order 1 and 2), and functional indices (mutation frequency and nucleotide diversity). We also evaluated the pattern of nucleotide changes to investigate which of them could be the cause of the quasispecies complexity. RESULTS CHB patients showed higher median HBV-DNA levels [5.4 logIU/mL, interquartile range (IQR) 3.5-7.9] than CHD (3.4 logIU/mL, IQR 3-7.6)(P = n.s.) or CI (3.2 logIU/mL, IQR 2.3-3.5)(P < 0.01) patients. The incidence and abundance indices indicated that HBV quasispecies complexity was significantly greater in CI than CHB. A similar trend was observed in CHD patients, although only Hill numbers of order 2 showed statisti 展开更多
关键词 HEPATITIS B VIRUS HEPATITIS DELTA VIRUS HEPATITIS B X gene Next-generation sequencing Viral QUASISPECIES HEPATITIS B virus-hepatitis DELTA VIRUS interaction
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基于SSH和Layui的工程科学前沿与实践系统 预览 被引量:1
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作者 曹灿 刘志刚 《工业控制计算机》 2019年第2期91-92,96共3页
随着互联网技术的快速发展,越来越多的工作都在互联网上完成,这节省了大量的人力、物力和时间,为人们的生活带来了极大的便捷。《工程科学前沿与实践》作为作者学校工程科学学院开设的、旨在让学生了解工程科学前沿的实践类课程,为此搭... 随着互联网技术的快速发展,越来越多的工作都在互联网上完成,这节省了大量的人力、物力和时间,为人们的生活带来了极大的便捷。《工程科学前沿与实践》作为作者学校工程科学学院开设的、旨在让学生了解工程科学前沿的实践类课程,为此搭建一套完善的网上平台显得很有必要。系统采用B/S架构,使用当前比较流行的SSH(Struts、Spring和Hibernate)框架,前端使用Layui框架,数据库使用MySQL,开发工具为Eclipse。系统实现了学生在线选课,教师后台管理的功能,学生可以方便地在网站上提交自己的选课申请,教师也可以在网上浏览到学生申请的状况,方便进行管理。提升了学校的信息化管理水平及管理效率。 展开更多
关键词 B/S SSH Layui JSP MYSQL
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硼对AlMg5Si2Mn合金组织与力学性能的影响
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作者 毕金亮 赵荣达 +2 位作者 武晓峰 王克研 伍复发 《铸造技术》 CAS 2019年第12期1258-1260,1269,共4页
通过对AlMg5Si2Mn合金加入不同含量的B,研究其对合金组织结构、拉伸性能、硬度的影响。结果表明,加入适量的B对AlMg5Si2Mn合金中的共晶Mg2Si有较明显的变质作用。加入0.1%B时,初生α-Al明显细化且部分转变为等轴状;长针状和大片层状的共... 通过对AlMg5Si2Mn合金加入不同含量的B,研究其对合金组织结构、拉伸性能、硬度的影响。结果表明,加入适量的B对AlMg5Si2Mn合金中的共晶Mg2Si有较明显的变质作用。加入0.1%B时,初生α-Al明显细化且部分转变为等轴状;长针状和大片层状的共晶Mg2Si尺寸和片层间距明显减小。抗拉强度从未变质时的235 MPa提高到310 MPa,提高了32%;当B含量达到0.22%时,共晶Mg2Si全部转变为点状或纤维状,此时伸长率由未变质的3.9%上升到9.1%,提高了130.9%,同时强塑积(PSE)也由未添加B时的925.9 MPa·%增加到2 684.5 MPa·%。 展开更多
关键词 B MG2SI 显微组织 细化 力学性能
基于GIS的武汉市物流管理系统 预览
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作者 任东风 谢菲 《测绘与空间地理信息》 2019年第9期13-15,共3页
根据现代物流的实际需求,利用WebGIS技术调用高德地图API,将GIS的理论与方法应用于物流管理中,完善了传统物流的管理模型,设计了基于B/S开发模式的物流管理系统,对系统的数据库进行了设计,并详细介绍了物流管理系统各个子模块的功能,实... 根据现代物流的实际需求,利用WebGIS技术调用高德地图API,将GIS的理论与方法应用于物流管理中,完善了传统物流的管理模型,设计了基于B/S开发模式的物流管理系统,对系统的数据库进行了设计,并详细介绍了物流管理系统各个子模块的功能,实现了物流数据的统一管理、查询、电子地图显示、路径分析等核心功能。 展开更多
关键词 GIS 物流管理 B/S WEBGIS
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B对ZM5镁合金凝固组织和硬度的影响
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作者 刘俊英 刘栩瑞 《特种铸造及有色合金》 CAS 北大核心 2019年第7期805-807,共3页
向ZM5镁合金中添加B元素,主要考察了B对合金凝固组织和硬度的影响。结果表明,B对ZM5镁合金具有良好的细化作用。随着B含量的增加,合金的晶粒尺寸逐渐减小。当B含量为0.03%时,ZM5镁合金的平均晶粒尺寸仅为76μm,相比未细化时降低了72.2%... 向ZM5镁合金中添加B元素,主要考察了B对合金凝固组织和硬度的影响。结果表明,B对ZM5镁合金具有良好的细化作用。随着B含量的增加,合金的晶粒尺寸逐渐减小。当B含量为0.03%时,ZM5镁合金的平均晶粒尺寸仅为76μm,相比未细化时降低了72.2%。B与Al形成AlB2化合物,其能够作为异质形核核心细化ZM5镁合金晶粒。随着B含量的增加,ZM5镁合金的硬度逐渐增加,当B含量为0.03%时,合金的硬度相比未细化时提高了23.2%。 展开更多
关键词 B ZM5镁合金 组织 硬度
基于AJAX+Highcharts技术的脱硝催化剂大数据可视化平台开发实例 预览
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作者 王虎 《工业控制计算机》 2019年第2期123-124,148共3页
通过基于B/S结构的AJAX异步传输技术结合Highcharts组件,采用SQL Server关系型数据库,借助.NET开发环境,搭建了一个脱硝催化剂大数据可视化平台。AJAX异步传输技术可以高效的异步调用SQLServer数据库中的JSON文件,Highcharts可以简便地... 通过基于B/S结构的AJAX异步传输技术结合Highcharts组件,采用SQL Server关系型数据库,借助.NET开发环境,搭建了一个脱硝催化剂大数据可视化平台。AJAX异步传输技术可以高效的异步调用SQLServer数据库中的JSON文件,Highcharts可以简便地将读取到的JSON文件封装成图表,且具有较好的动态交互性。通过AJAX+Highcharts技术可以快速有效地实现大数据平台的实时可视化展示。 展开更多
关键词 AJAX Highcharts 可视化 B/S
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