检索结果-南通市图书馆

Increasing the Efficiency and Level of Environmental Safety of Pro-Environmental City Heat Supply Technologies by Low Power Nuclear Plants

引用

World Journal of Nuclear Science and Technology 2024年第2期14卷 107-117页

作者： Vladimir Kravchenko Igor Kozlov Volodymyr Vashchenko Iryna Korduba Andrew Overchenko serhii tsybytovskyi Department of Nuclear Power Plants Odesa Polytechnic National University Odesa Ukraine Interdepartmental Scientific Center for Fundamental Research on Energy and Ecology of the National Academy of Sciences of Ukraine &#8220Odesa Polytechnic&#8221 and Ministry of Ecology of Ukraine Odesa Ukraine Department of Environmental Protection and Labor Protection Technologies Kyiv National University of Construction and Architecture Kyiv Ukraine

In connection with the current prospect of decarbonization of coal energy through the use of small nuclear power plants (SNPPs) at existing TPPs as heat sources for heat supply to municipal heating networks, there is a technological need to improve heat supply schemes to increase their environmental friendliness and efficiency. The paper proves the feasibility of using the heat-feeding mode of ASHPs for urban heat supply by heating the network water with steam taken from the turbine. The ratio of electric and thermal power of a “nuclear” combined heat and power plant is given. The advantage of using a heat pump, which provides twice as much electrical power with the same heat output, is established. Taking into account that heat in these modes is supplied with different potential, the energy efficiency was used to compare these options. To increase the heat supply capacity, a scheme with the use of a high-pressure heater in the backpressure mode and with the heating of network water with hot steam was proposed. Heat supply from ASHPs is efficient and environmentally friendly even in the case of significant remoteness of heat consumers.

关键词： Low-Capacity Nuclear Power Plants Environmental Friendliness of the Thermal Power Generation Mode Heat Generation Condensation Mode Heat Supply

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Electronic-scale assessment of high-temperature oxidation mechanisms in a novel Fe-based alloy

引用

Journal of Iron and Steel Research(International) 2024年第4期31卷 982-997页

作者： Wei-di Luo Ting-ping Hou Xuan Liang Dong Zhang Heng-fu Lin Yu Li Tian-liang Zhao Cheng-yang Hu serhii Yershov Kai-ming Wu The State Key Laboratory of Refractories and Metallurgy.Wuhan University of Science and Technology.Wuhan 430081 HubeiChina Hubei Province Key Laboratory of Systems Science in Meallurgial Process Wuhan University of Science and Technology.Wuhan 430081.Hubei.China International Research Institute for Steel Technology Wuhan University of Science and Technology.Wuhan 430081.HubeiChina Collaborative Innovation Center for Advanced Steels w uhan University of Science and Technology.Wuhan 430081.HuleiChina

The development of alloys with high antioxidation performance is limited by the ambiguous details of the oxidation ***,based on the structures of internal oxides detected by high-resolution transmission electron microscopy,a hybrid method combining first-principles calculation,climb image nudged elastic band method and quasi-harmonic Debye model has been implemented to explain the oxidation mechanism with an emphasis on the origin of delamination and *** results showed that the delamination of oxides corresponds to the acceleration of diffusion of Cr element caused by lamellar *** reduction in the cracking occurrence at high temperature mainly results from the smaller bulk modulus of ***,the stronger chemical bonds promoted by lamellar structures also correspond to the higher crackingresistance.

关键词： Oxidation Crystal structure Diffusion Cracking-First-principles calculation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

激光辐射波长和脉冲寿命对碲化镉熔化阈值的影响

引用

材料导报 2024年第7期38卷 40-45页

作者：列维茨基·谢尔盖曹泽祥柯巴·亚历山大柯巴·玛丽亚乌克兰国家科学院半导体物理研究所基辅03028 乌克兰国立技术大学物理技术学院基辅03058 乌克兰国民警卫研究所国家安全系基辅03028

碲化镉的相对分子量为240,密度为5.885 g/cm^(3),熔点为1092℃。碲化镉是一种Ⅱ-Ⅵ族的化合物半导体材料,属于直接带隙型,带隙宽度为1.56 eV。碲化镉是制造X射线、伽马射线和红外线探测器的基本材料。对碲化镉的特别关注主要是由于其大... 详细信息

碲化镉的相对分子量为240,密度为5.885 g/cm^(3),熔点为1092℃。碲化镉是一种Ⅱ-Ⅵ族的化合物半导体材料,属于直接带隙型,带隙宽度为1.56 eV。碲化镉是制造X射线、伽马射线和红外线探测器的基本材料。对碲化镉的特别关注主要是由于其大原子数和大的光电吸收截面。在基于CdTe的伽马辐射势垒探测器结构中,其表面的处理方法之一是纳秒激光照射,在某些情况下,纳秒激光照射可以在触点(Ag、In、Au)和势垒形成的技术处理阶段优化所需的表面参数。另一种方法是在脉冲激光照射下在碲化镉表面形成有序的纳米结构。对基于半导体及其结构的脉冲激光器,可根据其不同的脉冲持续时间τ_(p)和辐射波长λ将其分类。例如,红宝石激光器(λ=694 nm)、钕激光器(一次谐波1064 nm和两次谐波532 nm)、准分子KrF激光器(248 nm)和XeF激光器(351 nm)等,其脉冲持续时间分别为7、20、80、120 ns。这些激光器常被应用于表面修饰等领域。因此,往往有必要事先知道或至少估计在脉冲激光辐射下碲化镉表面的熔化温度和阈值,这取决于激光脉冲持续时间τ_(p)、辐射波长(光吸收系数α(λ))以及碲化镉表面本身的电物理参数,特别是表面重组率S和非平衡电荷载流子的寿命。这些参数取决于表面处理的方法和掺杂物的浓度。在上述情况下,实验研究是非常耗费人力和时间的,因此基于τ_(p)、α(λ)和碲化镉表面本身的电物理参数对融化阈值th和表面温度进行理论计算变得非常重要。本工作采用激光照射碲化镉,辐射波长为300~800 nm,脉冲持续时间为7~120 ns。为了以非破坏性的和有效的方法来管理接近表面层状态的CdTe,在T=80 K下进行了光致发光实验。为了监测熔化阈值,研究了由Acrorad公司制造和抛光的尺寸为5 mm×5 mm×0.5 mm的Cl补偿p-CdTe(111)单晶的光致发光光谱。经过研究发现,在激光脉冲寿命从7ns到1μs的范围内,CdTe熔化阈值明显取决于光吸收系数α(λ)。因为在脉冲寿命长于1μs的情况下,热扩散深度明显大于CdTe中的激光辐射穿透深度,并开始依赖于反射系数R(λ)。对于较短的激光脉冲长度τ_(p),当辐射波长λ变化时,熔化阈值会发生显著变化。同时,非平衡过剩载流子参数的变化(如表面重组速度S从10^(3)m/s增加到10^(5)m/s,还有扩散深度LD从0.4μm增加到2μm)会对CdTe熔化阈值产生至少25%的影响。而且红宝石激光的脉冲持续时间在(20±5)ns区间内的变化导致相对熔化阈值的变化(ΔIth/Ith)为35%。CdTe熔化阈值的计算值可以有效地被用于优化脉冲激光对晶体的表面处理与掺杂。

关键词：碲化镉熔化阈值脉冲激光辐照半导体激光掺杂

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Peculiarities of gender disambiguation and ordering of non-English authors’names for Economic papers beyond core databases

引用

Journal of Data and Information Science 2023年第1期8卷 72-89页

作者： Olesya Mryglod serhii Nazarovets Serhiy Kozmenko Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine 1 Svientsitskii St.79011 LvivUkraine Borys Grinchenko Kyiv University 18/2 Bulvarno-Kudriavska Str.04053 KyivUkraine University of Social Sciences Spoleczna Akademia Nauk 9 Sienkiewicza St.90-113 LodzPoland

Purpose:To supplement the quantitative portrait of Ukrainian Economics discipline with the results of gender and author ordering analysis at the level of individual authors,special methods of working with bibliographic data with a predominant share of non-English authors are *** properties of gender mixing,the likelihood of male and female authors occupying the first position in the authorship list,as well as the arrangements of names are ***/methodology/approach:A data set containing bibliographic records related to Ukrainian journal publications in the field of Economics is constructed using Crossref *** semi-automatic disambiguation of authors’names is *** names,along with gender-specific ethnic surnames,are used for gender disambiguation required for further comparative gender *** reshuffling of data is used to determine the impact of gender *** assess the level of alphabetization for our data set,both Latin and Cyrillic versions of names are taken into ***:The lack of well-structured metadata and the poor use of digital identifiers lead to numerous problems with automatization of bibliographic data pre-processing,especially in the case of publications by non-Western *** described stages for working with such specific data help to work at the level of authors and analyse,in particular,gender *** the larger number of female authors,gender equality is more likely to be reported at the individual level for the discipline of Ukrainian *** tendencies towards collaborative or solo-publications and gender mixing patterns are found to be dependent on the journal:the differences for publications indexed in Scopus and/or Web of Science databases are *** has also been found that Ukrainian Economics research is characterized by rather a non-alphabetical order of *** limitations:Only partial authors’name disambiguation is performed in a semi-automatic

关键词： Scholarly metadata Economics Crossref Open Ukrainian Citation Index Ukraine,Gender non-Western authors

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Assessment of retracted papers,and their retraction notices,from a cancer journal associated with“paper mills”

引用

数据与情报科学学报:英文版 2023年第2期8卷 118-125页

作者： Jaime A.Teixeira da Silva serhii Nazarovets Independent researcher Ikenobe 3011-2Kagawa-ken761-0799Japan Borys Grinchenko Kyiv University 18/2 Bulvarno-Kudriavska Str.04053 KyivUkraine

Cancer research is occasionally described as being in a reproducibility *** cancer literature has ample papers retracted due to misconduct,including the use of paper mills,invalid authorship,or fake *** objective of this paper was to gain an appreciation of the balance of retractions and associated retraction notices of 23 retracted Cancer Biotherapy and Radiopharmaceuticals papers associated with paper *** 23 March 2023,these retracted papers had already accumulated 287 citations according to Web of Science Core Collection,253 according to Scopus,and 365 according to Google Scholar,i.e.,metrically speaking,they were highly *** authors had an affiliation(71%being a hospital)in ***(12/21;57%)of corresponding authors had emails with a@*** *** of the retraction notices(i.e.,17%)explicitly indicated paper mills as a reason for retraction although,in general,the retraction notices lacked details and background that could assist readers’understanding of the retractions.

关键词： Indexing Oncology Publishing history PubMed Retraction Notices Transparency

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Erosion-corrosion resistance of Mo-Ti- and Ni-Cr-Mo-alloyed medium-carbon martensitic steels: a critical analysis of synergistic effect of erosion and corrosion

引用

Journal of Iron and Steel Research(International) 2022年第8期29卷 1299-1311页

作者： De-fa Li Hang-yu Dong Cheng-yang Hu Kai-ming Wu serhii Yershov Oleg Isayev School of Mechanical and Vehicle Engineering West Anhui UniversityLuan 237012AnhuiChina The State Key Laboratory of Refractories and Metallurgy Hubei Province Key Laboratory of Systems Science on Metallurgical ProcessingInternational Research Institute for Steel TechnologyWuhan University of Science and TechnologyWuhan 430081HubeiChina Laboratory for Excellence in Advanced Steel Research Materials Science and Engineering ProgramDepartment of MetallurgicalMaterials and Biomedical EngineeringUniversity of Texas at El PasoEl PasoTX 79968USA

Grain refinement renders Mo-Ti-alloyed medium-carbon martensitic steel to exhibit high hardness,high strength,and good toughness,but the erosion-corrosion resistance of steel in a corrosive slurry environment is not ***-Ti-alloyed medium-carbon martensitic steel is compared with Ni-Cr-Mo-alloyed medium-carbon martensitic steel,and the erosion-corrosion resistance of those two steels under impingement by NaCl solution with gravels has been *** components,pure-corrosion rate,pure-erosion rate,and synergistic effect of erosion and corrosion(SEEC)of erosion-corrosion rate,were *** pure-corrosion and pure-erosion rates of Mo-Ti-alloyed steel were higher than those of Ni-Cr-Mo-alloyed one;however,its erosion-corrosion rate was relatively lower because of a weak *** plastic deformation and work hardening due to gravel impingement were the essential reason for SEEC,which could be reduced by grain refinement,and consequently,Mo-Ti-alloyed steel with finer grains had better erosion-corrosion *** refinement could be an effective way to improve the erosion-corrosion resistance of martensitic steels.

关键词： Grain refinement Mo-Ti alloying Ni-Cr-Mo alloying Martensite Erosion-corrosion

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effectiveness of a new approach to minimally invasive surgery in palliative treatment of patients with distal malignant biliary obstruction

引用

World Journal of Gastrointestinal Surgery 2023年第4期15卷 698-711页

作者： Yaroslav M Susak Leonid L Markulan serhii M Lobanov Roman Y Palitsya Mariia P Rudyk Larysa M Skivka Department of Surgery with the Course of Emergency and Vascular Surgery O.O.Bogomolets National Medical UniversityKyiv 01601Ukraine Department of Abdominal Surgery National Military Medical Clinical Centre“Main Military Clinical Hospital”Kyiv 01133Ukraine Department of Microbiology and Immunology Taras Shevchenko National University of KyivKyiv 01033Ukraine

BACKGROUND Palliative endoscopic biliary drainage is the primary treatment option for the management of patients with jaundice which results from distal malignant biliary obstruction(DMBO).In this group of patients,decompression of the bile duct(BD)allows for pain reduction,symptom relief,chemotherapy administration,improved quality of life,and increased survival *** reduce the unfavorable effects of BD decompression,minimally invasive surgical techniques require continuous *** To develop a technique for internal-external biliary-jejunal drainage(IEBJD)and assess its effectiveness in comparison to other minimally invasive procedures in the palliative treatment of patients with *** A retrospective analysis of prospectively collected data was performed,which included 134 patients with DMBO who underwent palliative BD ***-jejunal drainage was developed to divert bile from the BD directly into the initial loops of the small intestine to prevent duodeno-biliary *** was carried out using percutaneous transhepatic *** transhepatic biliary drainage(PTBD),endoscopic retrograde biliary stenting(ERBS),and internal-external transpapillary biliary drainage (IETBD) were used for the treatment of studypatients. Endpoints of the study were the clinical success of the procedure, the frequency andnature of complications, and the cumulative survival *** were no significant differences in the frequency of minor complications between the studygroups. Significant complications occurred in 5 (17.2%) patients in the IEBJD group, in 16 (64.0%)in the ERBS group, in 9 (47.4%) in the IETBD group, and in 12 (17.4%) in the PTBD *** was the most common severe complication. In the IEBJD group, the course ofcholangitis was characterized by a delayed onset and shorter duration as compared to other studygroups. The cumulative survival rate of patients who underwent IEBJD was 2.6 times higher incomparison t

关键词： Distal malignant biliary obstruction Obstructive jaundice Bile duct decompression Palliative endoscopic biliary drainage Internal-external biliary-jejunal drainage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Drug-peptide supramolecular hydrogel boosting transcorneal permeability and pharmacological activity via ligand-receptor interaction

引用

Bioactive Materials 2022年第4期7卷 420-429页

作者： Lin Chen Jie Deng Ailing Yu Yuhan Hu Bo Jin Pengyuan Du Jianhong Zhou Lei Lei Yuan Wang serhii Vakal Xingyi Li Institute of Biomedical Engineering School of Ophthalmology&OptometryEye HospitalWenzhou Medical University270 Xueyuan RoadWenzhou325027PR China Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province The First Affiliated HospitalWenzhou Medical UniversityWenzhou325027PR China Structural Bioinformatics Laboratory BiochemistryÅbo Akademi UniversityTurku20541Finland

Boosting transcorneal permeability and pharmacological activity of drug poses a great challenge in the field of ocular drug *** the present study,we propose a drug-peptide supramolecular hydrogel based on anti-inflammatory drug,dexamethasone(Dex),and Arg-Gly-Asp(RGD)motif for boosting transcorneal permeability and pharmacological activity via the ligand-receptor *** drug-peptide(Dex-SA-RGD/RGE)supramolecular hydrogel comprised of uniform nanotube architecture formed spontaneously in phosphate buffered saline(PBS,pH=7.4)without external *** storage at 4℃,25℃,and 37℃ for 70 days,Dex-SA-RGD in hydrogel did not undergo significant hydrolysis,suggesting great long-term *** comparison to Dex-SA-RGE,Dex-SA-RGD exhibited a more potent in vitro anti-inflammatory efficacy in lipopolysaccharide(LPS)-activated RAW 264.7 macrophages via the inhibition of nuclear factorкB(NF-κB)signal *** importantly,using drug-peptide supramolecular hydrogel labeled with 7-nitro-2,1,3-benzoxadiazole(NBD),the Dex-SA-K(NBD)RGD showed increased performance in terms of integrin targeting and cellular uptake compared to Dex-SA-K(NBD)RGE,as revealed by cellular uptake *** topical instillation in rabbit’s eye,the proposed Dex-SA-K(NBD)RGD could effectively enhance the transcorneal distribution and permeability with respect to the Dex-SA-K(NBD)***,our findings demonstrate the performance of the ligand-receptor interaction for boosting transcorneal permeability and pharmacological activity of drug.

关键词： Active transport Integrin Supramolecular hydrogel Ocular retention Corneal permeability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

00Cr12Ni双相组织不锈钢焊接接头区域特征与性能

引用

焊接学报 2023年第2期44卷 22-31,I0004页

作者：张心保吴开明柯睿胡丞杨 Amir AShirzadil serhii Yershov 黄日清武汉科技大学省部共建耐火材料与冶金国家重点实验室高性能钢铁材料及其应用省部共建协同创新中心武汉430081 材谷金带(佛山)金属复合材料有限公司佛山528000 School of Engineering&Innovation The Open UniversityMilton KeynesMK76AAUK 广西北港新材料有限公司北海536017

采用熔化极活性气体保护焊(metal active gas arc welding,MAG焊)、等离子弧焊(plasma arc welding,PAW)和高频感应焊接方法获得铁素体+马氏体双相组织不锈钢00Cr12Ni的焊接接头,对其组织区域特征和力学性能进行了研究.典型的焊接接头... 详细信息

采用熔化极活性气体保护焊(metal active gas arc welding,MAG焊)、等离子弧焊(plasma arc welding,PAW)和高频感应焊接方法获得铁素体+马氏体双相组织不锈钢00Cr12Ni的焊接接头,对其组织区域特征和力学性能进行了研究.典型的焊接接头热影响区(heat affected zone,HAZ)可分为晶粒粗大,铁素体为优势相的高温热影响区(high temperature heat affected zone,HTHAZ)和晶粒细小,马氏体为优势相的低温热影响区(low temperature heat affected zone,LTHAZ).通过测量实际焊接热循环曲线的方法确定了HTHAZ及LTHAZ的温度范围,并采用热模拟研究HAZ不同区域的力学性能.结果表明,HTHAZ的热循环峰值范围为1200℃至熔点,晶粒粗大呈现为脆性;LTHAZ热循环峰值范围为800~1200℃,室温组织为非平衡低碳板条马氏体,韧性较好,但低于0℃时呈脆性.MAG焊接头由于奥氏体焊缝为钟罩形,HAZ冲击试验时断面包括奥氏体焊缝,因此冲击性能较好;PAW接头在1000℃奥氏体快冷可获得细晶粒马氏体韧性提高;高频感应焊接接头中无HTHAZ,但焊接过程中的加工硬化导致室温呈脆性,通过去应力退火后韧性恢复.

关键词： 12%Cr双相组织不锈钢焊接接头微观组织力学性能焊后热处理

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

不同表面处理设备对小麦清理效果的对比研究

引用

食品工业科技 2023年第21期44卷 258-266页

作者：杜凯欣王凤成 SOTS serhii 栾奇莉王法玺李宜锴河南工业大学粮油食品学院河南郑州450001 国家粮食加工装备工程技术研究中心河南开封475200 惠民县宇东面粉有限公司山东滨州251700

为深入探究不同清理设备对小麦籽粒表面的清理程度,选用FBPY-S-130小麦剥皮机和FDMW30×60打麦机(转子、定子结构不同),通过原粮直接清理、一清润麦后二清、原料先润麦后清理三种工艺来清理原粮小麦。以增碎率、剥皮率、灰分降等指标作... 详细信息

为深入探究不同清理设备对小麦籽粒表面的清理程度,选用FBPY-S-130小麦剥皮机和FDMW30×60打麦机(转子、定子结构不同),通过原粮直接清理、一清润麦后二清、原料先润麦后清理三种工艺来清理原粮小麦。以增碎率、剥皮率、灰分降等指标作为表征清理效率的可视化参数,对比两种设备对小麦的清理效果;以小麦籽粒的阿拉伯木聚糖、烷基间苯二酚含量并结合扫描电镜(SEM)观察微观结构综合分析两种设备对小麦皮层的去除情况;通过测定处理前后小麦籽粒的真菌毒素和微生物含量确定两种设备对小麦籽粒的卫生改变情况。实验结果表明,剥皮机的清理效率是打麦机的3~4倍,增碎率不及打麦机的二分之一。剥皮机可将0.45%~0.63%的小麦表皮轻微剥落,而打麦机对小麦皮层厚度无影响。剥皮机对毒素微生物的去除率高于打麦机近2倍,同时轻度剥皮处理对小麦的总淀粉和粗蛋白含量无显著影响(P>0.05)。在不同工艺中,工艺一单次剥皮处理可以达到较好的干法清理效果。但以工艺二润麦前后分别进行剥皮处理对小麦的清理效果最佳,与一清前的原粮相比,此工艺的整机出杂率达1.93%,可使小麦籽粒的脱氧雪腐镰刀菌烯醇含量降低62%、菌落总数含量减少49%,大肠杆菌减少78%。综上可知,FBPY-S-130小麦剥皮机的剥皮处理和工艺二相结合可以达到对原粮小麦清理的最佳效果。

关键词：表面清理剥皮机打麦机卫生指标工艺优化

来源：

维普期刊数据库

同方期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：