检索结果-南通市图书馆

关于GJB 150.11A盐雾试验方法的探讨

在线全文

学校读者我要写书评

暂无评论

环境技术 2024年第4期42卷 226-231页

作者：吴宝军侯敏宏陕西东方航空仪表有限责任公司汉中723102

盐雾试验是环境试验中的一项常见试验,考核装备的耐腐蚀性能。阐述GJB 150.11A中各项指标的来历,对比国内外各类盐雾试验标准方法的差异,分析标准中未明确要求的内容,对今后的盐雾试验标准提出改进建议,以供相关工作人员参考。

关键词：盐雾试验标准方法设备计量建议

Multi-element analysis of Baijiu(Chinese liquors)by ICP-MS and their classification according to geographical origin

在线全文

学校读者我要写书评

暂无评论

Food Quality and Safety 2018年第1期2卷 43-49页

作者： Xuebo Song min hou Zhi Li Lin Zhu Fuping Zheng mingquan Huang Xiaotao Sun Hehe Li Feng Chen Baoguo Sun Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business UniversityBeijingChinaBeijing Laboratory for Food Quality and SafetyBeijing Technology and Business UniversityBeijingChinaThermo Fisher Scientific(China)Inc.BeijingChinaDepartment of FoodNutrition and Packaging SciencesClemson UniversitySouth CarolinaUSA

Objectives:Investigating the element profiles of Be,Al,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Se,Rb,Sr,Ag,Cd,Cs,La,Pr,Nd,Sm,Eu,Gd,Pb,Th,and U of Baijiu(Chinese liquors),and setting up their classification according to geographical origin.Materials and Methods:Twenty-eight Chinese liquors from Shandong,Guizhou,and Sichuan provinces were analyzed by inductively coupled plasma mass spectrometry with the aid of matrix matching,online internal calibration,and direct injection to determine the concentrations of the aforementioned 26 elements.Multivariate statistical analysis,based on the contents of elements in the liquors,was applied to differentiate the liquors from different origins.Results:Both the cluster analysis based on 11 elements and the discriminant analysis based on 5 elements can separate the liquors of Shandong Province from others.A leave-one-out cross test of the discriminant analysis data resulted in 100 per cent accuracy regarding the recognition ability and prediction ability for the liquors from Shandong Province,and an overall 75.0 per cent accuracy of its prediction for all the 28 total liquors.Limitations:The liquors of Guizhou and Sichuan provinces can not be differentiated successfully.Conclusions:The liquors produced in Shandong Province can be differentiated in a great extent from Guizhou and Sichuan provinces based on the multivariate statistical analysis of the concentration of elements in liquors,while those of Guizhou and Sichuan provinces can not be differentiated successfully due to their geographical adjacency.

关键词： ICP-MS Baijiu Chinese liquor element multivariate statistics

Price Competition in the Random Coefficient Attraction Choice Models with Linear Cost

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of the Operations Research Society of China 2022年第3期10卷 623-658页

作者： Xiao-Yi Feng Yang-Yang Xie hou-min Yan Department of Model Risk Management The Hongkong and Shanghai Banking Corporation LimitedHong KongChina International Institute of Finance School of ManagementUniversity of Science and Technology of ChinaHefei230026AnhuiChina Department of Management Sciences College of BusinessCity University of Hong KongHong KongChina

We study the pricing game between competing retailers under various random coefficient attraction choice models.We characterize existence conditions and structure properties of the equilibrium.Moreover,we explore how the randomness and cost parameters affect the equilibrium prices and profits under multinomial logit(MNL),multiplicative competitive interaction(MCI)and linear attraction choice models.Specifically,with bounded randomness,for the MCI and linear attraction models,the randomness always reduces the retailer’s profit.However,for the MNL model,the effect of randomness depends on the product’s value gap.For high-end products(i.e.,whose value gap is higher than a threshold),the randomness reduces the equilibrium profit,and vice versa.The results suggest high-end retailers in MNL markets exert more effort in disclosing their exact product performance to consumers.We also reveal the effects of randomness on retailers’pricing decisions.These results help retailers in making product performance disclosure and pricing decisions.

关键词： Pricing game Random coefficient choice models Equilibrium existence Effects of randomness

Sensory and chemical assessment of silver pomfret (Pampus argenteus) treated with Ginkgo biloba leaf extract treatment during storage in ice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2018年第1期3卷 30-37页

作者： Weiqing Lan Xu Che Qiaoling Xu Ting Wang Ruoyuan Du Jing Xie min hou Han Lei College of Food Science&Technology Shanghai Ocean UniversityShanghai 201306China Shanghai Engineering Research Center of Aquatic Product Processing&Preservation Shanghai 201306China

This study investigated the physical(L*,a*,b*,texture profile analyses,pH),chemical(TVB-N,K value and TBA),microbiological,amino acid content,and flavor effects that Gingko biloba leaf extract(GBLE)had on silver pomfret(Pampus argenteus)stored at 4±1C in ice for 18 days.Fresh pomfret samples were obtained directly from the local fish market and transported to the laboratory with ice immediately.After being gutted,washed,filleted and trimmed in a water-ice mixture,samples were treated with different concentrations of GBLE(0.0 mg/mL,2.5 mg/mL,5.0 mg/mL,10.0 mg/mL)and packaged in Polyethylene bag,then stored in a refrigerator at 4±1C with ice.The results show that the shelf-life of untreated(0.0 mg/mL)pomfret samples was 8e9 days compared to 14e15 days for the GBLE1(2.5 mg/mL)treated group.The assessment results showed that different concentrations of GBLE had variable effects on preserving the texture parameters of acceptability limit,inhibit lipid oxidation,protein degradation,and microorganism growth.2.5 mg/mL of GBLE was the best for the preservation of pomfret during storage in ice.Therefore,there is potential use for GBLE as a preservative to extend the shelf-life of pomfret during chilled storage in ice.

关键词： Pomfret Ginkgo biloba leaf extract(GBLE) Shelf-life Ice storage

基于多算法分级权重集成的渤海西岸降水预报技术研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

海洋预报 2024年第3期41卷 71-79页

作者：侯敏杨晓君王彩霞张楠许长义王国松天津市海洋气象重点实验室天津300074 天津市滨海新区气象局天津300450 天津市气象台天津300074 国家海洋信息中心天津300171

以渤海西岸为研究区域,基于2019—2021年6—9月实况降水资料和模式预报数据,研发了一种新的降水集成预报技术,采用分级权重分配将3种客观订正预报算法和6种集合统计量算法进行集成,得到多算法分级权重集成预报(Hierarchical-weight Cons... 详细信息

以渤海西岸为研究区域,基于2019—2021年6—9月实况降水资料和模式预报数据,研发了一种新的降水集成预报技术,采用分级权重分配将3种客观订正预报算法和6种集合统计量算法进行集成,得到多算法分级权重集成预报(Hierarchical-weight Consensus Forecasting,HCF),然后以2021年9月渤海西岸一次典型强降水过程为例进行了检验评估。结果表明:HCF预报(08时—次日08时)的所有降水量级的TS评分均高于欧洲中期天气预报中心(ECMWF)的模式预报;相较于ECMWF模式预报和其他客观预报,HCF在降水量级和落区预报方面均表现良好,08时—次日08时的大雨及以上量级的TS评分最高,其他降水量级检验评估指标也均在前三位;在个例检验中,HCF预报较ECMWF模式的所有降水量级的检验指标均更优秀,其中小雨预报的TS评分较ECMWF模式提升41.76%,大雨预报评分提升54.42%。

关键词：沿海降水预报分级权重集成晴雨订正个例检验

Study of Clone Code Detection Method

在线全文

学校读者我要写书评

暂无评论

Study of Clone Code Detection Method

Facts about Endosalpingiosis

作者： Yafang Wang Dongsheng Liu min hou College of Computer Science and Technology Inner Mongolia Normal University

In the process of software development and maintenance,developers often use "copypaste" or use the development framework,so that a large number of clone codes appear in the software system.In order to eliminate clone code and reduce the negative effects of clone code,researchers have proposed many excellent methods for clone code detection.This paper first introduces the significance of the research on clone code detection,and sorts out the related concepts of clone code detection.Then,according to the clone code detection technology,the existing techniques can be categorized to Text-based,Token-based,Tree-based,Metric-based and Graph-based categories.The five categories,respectively introduce the corresponding existing methods or tools,and summarize their advantages and disadvantages.Finally summarize the key problems in the current clone code detection research.

关键词： clone code clone detection detection method

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2015年第10期5卷 523-527页

作者： min hou Lipai Chen Jingping Yun Department of Pathology Cancer Center Guangzhou Medical University Guangzhou China Department of Gynecological Oncology Cancer Center Guangzhou Medical University Guangzhou China State Key Laboratory of Oncology in South China and Department of Pathology Sun Yat-sen University Cancer Center Guangzhou China

Endosalpingiosis was first described by Sampson in 1930. However, until recently more and more studies show the convincing evidence that it most probably originates from tubal cells. It has a close relationship with the development of serous tumors, especially low-grade serous carcinoma. The lesion does cause symptoms and signs, such as chronic abdominal pain or tumor-like mass, though it is often found accidently for other gynecologic problems. Occasionally atypical endosalpingiosis needs to be differentiated from a malignancy when it appears in an unusual site with worrying morphologic presentations or under some special circumstances. Owing to the facts that it may evolve quietly and continuously towards serous tumors, and that the lesions at different sites may evolve independently, the outcomes of its evolution can eventually kill the patient. Therefore, a proper recognition of the lesion will translate it into an adequate care for those patients. This review summarizes the most recent findings and makes thoughtful comments.

关键词： Endosalpingiosis Chronic Abdominal Pain Serous Tumors Tubal-Cell Origin Carcinogenesis

昆明市一起聚集性发热疫情中腺病毒3型Penton base、Hexon和Fiber基因遗传进化分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中华微生物学和免疫学杂志 2024年第3期44卷 241-248页

作者：刘艳艳古文鹏段忠文王钰龚娇茶琦雁吴林蔚侯敏昆明市疾病预防控制中心微生物检验科昆明650228 云南省疾病预防控制中心急性传染病防制所昆明650022 昆明市呈贡区疾病预防控制中心检验科昆明650500 玉溪市疾病预防控制中心卫生监测检验科玉溪678400

目的对昆明市一起聚集性发热疫情样本进行腺病毒检测和遗传进化分析。方法采集典型发热患者咽拭子标本,使用微流体芯片技术进行30种常见呼吸道传染病病原体核酸检测。对腺病毒核酸阳性标本使用Nanopore三代高通量测序技术进行Penton bas... 详细信息

目的对昆明市一起聚集性发热疫情样本进行腺病毒检测和遗传进化分析。方法采集典型发热患者咽拭子标本,使用微流体芯片技术进行30种常见呼吸道传染病病原体核酸检测。对腺病毒核酸阳性标本使用Nanopore三代高通量测序技术进行Penton base、Hexon和Fiber三个重要基因全长序列扩增、测定和分型鉴定,构建系统进化树,开展分子变异、遗传进化等分析。结果共采集5份标本,均检出呼吸道腺病毒及流感嗜血杆菌。对腺病毒进行Nanopore三代基因测序最终均获得Penton base、Hexon和Fiber基因全长编码区核苷酸序列,5份标本之间3个基因核苷酸相似性依次为100.0%、99.9%~100.0%和100.0%,氨基酸同源性均为100.0%;与HAdV3原型株(AY599834)核苷酸相似性最高,分别为98.6%、98.7%和98.9%。系统发育分析表明,3个基因系统进化树分析结果基本一致,人腺病毒3型(HAdV3)原型株单独一支,本研究中HAdV3序列均划分在同一进化分支上,与较早年份国外及中国台湾毒株亲缘关系较远,与近年国内外毒株亲缘关系较近,与2019年日本株(LC703523)和中国广州株(MZ540961)高度同源。与原型株比较分析昆明HAdV3氨基酸突变位点,Penton base有5处变异;Hexon有10处变异;Fiber有11处变异。结论本起疫情中的腺病毒在Penton base、Hexon和Fiber基因全长序列中型别分型结果一致,为P3H3F3型,与包括原型株在内的国内外HAdV3毒株显示出非常小的遗传变异。与原型株相比发生了多处氨基酸位点突变,并且多数氨基酸位点变异发生在蛋白质的高变区或功能区,其中Hexon蛋白中M7L为昆明序列独有氨基酸突变位点。

关键词：人腺病毒3型五邻体基座蛋白六邻体蛋白纤维蛋白遗传进化

在线全文

学校读者我要写书评

暂无评论

羊城“枫景”的绘制者

现代世界警察 2024年第1期 24-39页

作者：陈强胜倪少英文骏侯敏(图) 不详

广州又称“羊城”,是广东省省会,国家重要的中心城市、国际商贸中心、综合交通枢纽;是粤港澳大湾区核心引擎城市之一。广州有2200多年历史,是古代海上丝绸之路的始发地,素有“千年商都”的美誉;这里气候宜人,森林覆盖率达42.14%,被联合... 详细信息

广州又称“羊城”,是广东省省会,国家重要的中心城市、国际商贸中心、综合交通枢纽;是粤港澳大湾区核心引擎城市之一。广州有2200多年历史,是古代海上丝绸之路的始发地,素有“千年商都”的美誉;这里气候宜人,森林覆盖率达42.14%,被联合国评为“国际花园城市”,获联合国改善人居环境最佳范例奖。广州总面积7434.40平方千米,2022年末,广州市常住人口1873.41万人。

关键词：粤港澳大湾区国际商贸中心综合交通枢纽常住人口古代海上丝绸之路森林覆盖率国际花园城市绘制者