检索结果-南通市图书馆

Sainfoin(Onobrychis viciifolia)silage in dairy cow rations reduces ruminal biohydrogenation and increases transfer efficiencies of unsaturated fatty acids from feed to milk

引用

Animal Nutrition 2020年第3期6卷 333-341页

作者： Nguyen Thi Huyen Martin W.A.Verstegen Wouter H.Hendriks Wilbert F.Pellikaan Animal Nutrition group Wageningen UniversityPO Box 338Wageningen6700 AHthe Netherlands Department of Farm Animal Health Utrecht UniversityPO Box 80.163Utrecht3508 TDthe Netherlands

The effects of replacing grass silage by sainfoin silage in a total mixed ration(TMR)based diet on fatty acid(FA)reticular inflow and milk FA profile of dairy cows was *** experiment followed a crossover design with 2 dietary *** control diet consisted of grass silage,corn silage,concentrate and *** the sainfoin diet,half of the grass silage was replaced by a sainfoin *** rumen cannulated lactating multiparous dairy cows with a metabolic body weight of 132.5±3.6 kg BW^0.75,214±72 d in milk and an average milk production of 23.1±2.8 kg/d were used in the *** were paired based on parity and milk *** pairs,cows were randomly assigned to either the control diet or the sainfoin diet for 2 experimental periods(29 d per period).In each period,the first 21 d,cows were housed individually in tie-stalls for adaptation,then next 4 d cows were housed individually in climate-controlled respiration chambers to measure *** the last 4 d,cows were housed individually in tie stalls to measure milk FA profile and determine FA reticular inflow using the reticular sampling technique with Cr-ethylenediaminetetraacetic acid disodium salt dihydrate(EDTA)and Yb-acetate used as digesta flow *** the dietary C18:3n-3 intake was lower(P=0.025)in the sainfoin diet group,the mono-unsaturated FA reticular inflow was greater(P=0.042)in cows fed the sainfoin *** reticular inflow of trans-9,trans-12-C18:2 and cis-12,trans-10 C18:2 was greater(P≤0.024)in the sainfoin diet *** cows fed sainfoin diet had a lower(P≤0.038)apparent ruminal biohydrogenation of cis-9-C18:1 and C18:3n-3,compared to the cows fed the control *** sainfoin diet group had greater(P≤0.018)C18:3n-3 and cis-9,cis-12-C18:2 proportions in the milk FA profile compared to the control diet *** efficiencies from feed to milk of C18:2,C18:3n-3 and unsaturated FA were greater(P≤0.0179)for the sainfoin *** on the results,it co

关键词： Sainfoin silage Reticular inflow Milk fatty acid profile Dairy cow

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

Degradation of EB-PVD thermal barrier coatings caused by CMAS deposits

引用

Progress in Natural Science:Materials International 2012年第5期22卷 461-467页

作者： Hui Peng a,Lu Wang a,b,Lei Guo a,Wenhui Miao a,Hongbo Guo a,Shengkai Gong a a School of Materials Science and Engineering,Beihang University,No.37,Xueyuan Road,Beijing 100191,China b AVIC Shenyang Liming Aero-engine group Corporation Ltd.,Shenyang 110043,China School of Materials Science and Engineering Beihang University No.37 Xueyuan Road Beijing 100191 China AVIC Shenyang Liming Aero-engine group Corporation Ltd. Shenyang 110043 China

In aero-turbine engines,thermal barrier coatings(TBCs) must be capable to withstand harsh environments,such as high-temperature oxidation and ***,a new failure mode of TBCs caused by calcium-magnesium-alumina-silicate(CMAS) glass has attracted increasing *** this paper,yttria stabilized zirconia(YSZ) TBCs produced by electron beam physical vapor deposition(EB-PVD) were exposed to CMAS deposits at 1250℃.The microstructure evolution and failure mechanism of the coatings were *** has been shown that CMAS glass penetrated into the YSZ ceramic layer along the inter-columnar gaps and interacted with *** a result,an interaction zone of about 20μm thickness,which was the mixture of CMAS and YSZ with equiaxial structure,was formed in the YSZ surface layer after 4h heat-treatment at 1250℃.Meanwhile,yttria in YSZ layer as a stabilizer was dissolved in CMAS glass and caused accelerated monoclinic phase *** 8h heat-treatment,degradation of YSZ TBC occurred by delamination cracking of YSZ layer,which is quite different from the traditional failure caused by interfacial cracking at the YSZ/metallic bond *** models have been built to describe the failure mechanism of EB-PVD TBCs attacked by CMAS deposits.

关键词： Thermal barrier coatings(TBCs) Electron beam-physical vapor deposition(EBPVD) Calcium-magnesium-alumina-silicate(CMAS) Failure mechanism

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

CHRONIC ATROPHIC GASTRITIS IN SHANGHAI

引用

中华医学杂志(英文版) 1982年第4期95卷 267-272页

作者：江绍基姚光弼 Gastroenterology Cooperative Study group Shanghai Branch of the Chinese Medical Association Shanghai

Chronic atrophic gastritis (CAG) seen in Shanghai has its own characteristics quite different from those reported abroad. It merits our attention for further exploration of CAG etiology, pathogenesis, diagnosis and tr...

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Prediction of high-speed train delay propagation based on causal text information

引用

Railway Engineering Science 2023年第1期31卷 89-106页

作者： Qianyi Liu Shengjie Wang Zhongcan Li Li Li Jun Zhang Chao Wen National Engineering Laboratory of Integrated Transportation Big Data Application Technology Southwest Jiaotong UniversityChengdu 610031China China Railway Chengdu group Co. LtdChengdu 610031China

The delay-causing text data contain valuable information such as the specific reasons for the delay,location and time of the disturbance,which can provide an efficient support for the prediction of train delays and improve the guidance of train control *** on the train operation data and delay-causing data of the Wuhan-Guangzhou high-speed railway,the relevant algorithms in the natural language processing field are used to process the delay-causing text *** also integrates the train operatingenvironment information and delay-causing text information so as to develop a cause-based train delay propagation prediction *** Word2vec model is first used to vectorize the delay-causing text description after word *** mean model or the term frequency-inverse document frequency-weighted model is then used to generate the delay-causing sentence vector based on the original word ***,the train operating-environment features and delay-causing sentence vector are input into the extreme gradient boosting(XGBoost)regression algorithm to develop a delay propagation prediction *** this work,4 text feature processing methods and 8 regression algorithms are *** results demonstrate that the XGBoost regression algorithm has the highest prediction accuracy using the test features processed by the continuous bag of words and the mean *** with the prediction model that only considers the train-operating-environment features,the results show that the prediction accuracy of the model is significantly improved with multi-ple regression algorithms after integrating the delay-causing feature.

关键词： High-speed rail Delay propagation Cause of delay Word2vec Natural language processing

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

Percutaneous radiofrequency ablation for early hepatocellular carcinoma: Risk factors for survival

引用

World Journal of Gastroenterology 2014年第6期20卷 1585-1593页

作者： Luciana Kikuchi Marcos Menezes Aline L Chagas Claudia M Tani Regiane SSM Alencar Marcio A Diniz Venncio AF Alves Luiz Augusto Carneiro D’Albuquerque Flair José Carrilho So Paulo Clínicas Liver Cancer group Instituto do Cancer do Estado de So Paulo Hospital das Clínicas Department of Gastroenterology University of So Paulo School of Medicine So Paulo Clínicas Liver Cancer group Instituto do Cancer do Estado de So Paulo Hospital das Clínicas Department of Radiology University of So Paulo School of Medicine So Paulo Clínicas Liver Cancer group Instituto do Cancer do Estado de So Paulo Hospital das Clínicas Department of Pathology University of So Paulo School of Medicine

AIM: To evaluate outcomes of radiofrequency ablation (RFA) therapy for early hepatocellular carcinoma (HCC) and identify survival- and recurrence-related factors.

关键词： Hepatocellular carcinoma Radiofrequency ablation Overall survival Disease-free survival

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

Constraining Design:Applying the Insights of Cognitive Work Analysis to the Design of Novel In-Car Interfaces to Support Eco-Driving

引用

Automotive Innovation 2020年第1期3卷 30-41页

作者： Craig K.Allison Neville A.Stanton Solent University East Park TerraceSouthampton SO140YNUK Transportation Research group University of SouthamptonBoldrewood Innovation CampusSouthampton SO167QFUK

The design with intent(DwI)toolkit assists designers in creating novel designs and ***,however,is not constrained to any degree,making it impossible to know whether the produced designs adequately account for users’*** contrast,cognitive work analysis(CWA)is a human factors research tool that seeks to map a system and account for users’needs,yet does not provide clear guidelines for progressing such analysis into workable designs with which users can *** paper seeks to present a proof-of-concept investigation to demonstrate that DwI can be suitably constrained and validated by insights gained from ***,in turn,benefits by having a suitable toolkit for progressing *** teams of individuals without design backgrounds were able to develop mock-up in-vehicle interfaces aimed at reducing fuel *** teams were able to use DwI toolkit to articulate the genesis of their ideas,which in turn could be directly linked to system needs identified within CWA.

关键词： Design with intent Cognitive work analysis Interface design Eco-driving

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

True-data testbed for 5G/B5G intelligent network

引用

Intelligent and Converged Networks 2021年第2期2卷 133-149页

作者： Yongming Huang Shengheng Liu Cheng Zhang Xiaohu You Hequan Wu National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211111China China Information and Communication Technology group Corporation Beijing 100083China

Future beyond fifth-generation(B5G)and sixth-generation(6G)mobile communications will shift from facilitating interpersonal communications to supporting internet of everything(IoE),where intelligent communications with full integration of big data and artificial intelligence(AI)will play an important role in improving network efficiency and providing high-quality *** a rapid evolving paradigm,the AI-empowered mobile communications demand large amounts of data acquired from real network environment for systematic test and ***,we build the world’s first true-data testbed for 5G/B5G intelligent network(TTIN),which comprises 5G/B5G on-site experimental networks,data acquisition&data warehouse,and AI engine&network *** the TTIN,true network data acquisition,storage,standardization,and analysis are available,which enable system-level online verification of B5G/6G-orientated key technologies and support data-driven network optimization through the closed-loop control *** paper elaborates on the system architecture and module design of *** technical specifications and some of the established use cases are also showcased.

关键词： true-data testbed wireless communication networks artificial intelligence(AI) big data internet of everything(IoE)

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

Early Warning Smartphone Diagnostics for Water Security and Analysis Using Real-Time pH Mapping

引用

Photonic Sensors 2015年第4期5卷 289-297页

作者： Md. Arafat HOSSAIN John CANNING Sandra AST Peter J. RUTLEDGE Abbas JAMALIPOUR interdisciplinary Photonics Laboratories (iPL) School of Chemistry The University of Sydney NSW 2006 Australia School of Chemistry The University of Sydney NSW 2006 Australia Wireless Networking group (WING) School of Electrical and Information Engineering The University of Sydney NSW2006 Australia

Early detection of environmental disruption, unintentional or otherwise, is increasingly desired to ensure hazard minimization in many settings. Here, using a field-portable, smartphone fluorimeter to assess water quality based on the pH response of a designer probe, a map of pH of public tap water sites has been obtained. A custom designed Android application digitally processed and mapped the results utilizing the global positioning system （GPS） service of the smartphone. The map generated indicates no disruption in pH for all sites measured, and all the data are assessed to fall inside the upper limit of local government regulations, consistent with authority reported measurements. This implementation demonstrates a new security concept： network environmental forensics utilizing the potential of novel smartgrid analysis with wireless sensors for the detection of potential disruption to water quality at any point in the city. This concept is applicable across all smartgrid strategies within the next generation of the Internet of Things and can be extended on national and global scales to address a range of target analytes, both chemical and biological.

关键词： Lab-in-a-phone Intemet of Things optical sensing and sensor smartphone sensor photonic sensor fluorescence water security

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

Disturbance Observer Based Control for Four Wheel Steering Vehicles With Model Reference

引用

IEEE/CAA Journal of Automatica Sinica 2018年第6期5卷 1121-1127页

作者： Shuyou Yu Jing Wang Yan Wang Hong Chen State Key Laboratory of Automotive Simulation and Control and with the Department of Control Science and EngineeringJilin UniversityChangchun 130012China Bosch Automotive Products(Suzhou)Co. LtdSuzhou215021China Huachen Auto group Shenyang 110141China

This paper presents a disturbance observer based control strategy for four wheel steering systems in order to improve vehicle handling stability. By combination of feedforward control and feedback control, the front and rear wheel steering angles are controlled simultaneously to follow both the desired sideslip angle and the yaw rate of the reference vehicle model.A nonlinear three degree-of-freedom four wheel steering vehicle model containing lateral, yaw and roll motions is built up, which also takes the dynamic effects of crosswind into *** disturbance observer based control method is provided to cope with ignored nonlinear dynamics and to handle exogenous disturbances. Finally, a simulation experiment is carried out,which shows that the proposed four wheel steering vehicle can guarantee handling stability and present strong robustness against external disturbances.

关键词： Disturbance observer based control four wheel steering handling stability model reference.

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

Accommodation in human eye models:a comparison between the optical designs of Navarro,Arizona and Liou-Brennan

引用

International Journal of Ophthalmology(English edition) 2017年第1期10卷 43-50页

作者： Georgios Zoulinakis Jose Juan Esteve-Taboada Teresa Ferrer-Blasco David Madrid-Costa Robert Montés-Mico Department of Optics and Physics Faculty University 46100Spain Optometry and Vision Sciencesof ValenciaBurjassotValencia Interuniversity laboratory for research in Vision and Optometry Mixed group University of ValenciaUniversity of MurciaSpain

AIM： To simulate and compare accommodation in accommodative and non-accommodative human eye ***： Ray tracing and optical design program was used. Three eye models were designed and studied： the Navarro, the Arizona and the Liou-Brennan. In order to make the Navarro and Liou-Brennan models to accommodate, specific geometric parameters of the models were altered with values that were chosen from the literature. For the Arizona model, its’ mathematical functions for accommodation were used for the same accommodative demands. The simulation included four distances of accommodation for each model： at infinity, 3, 1 and 0.5 *** results were diffraction images of a “letter F” for graphical comparison, spot diagrams on the retinal field and Modulation Transfer Function （MTF） ***：Zernike coefficients for the aberrations, Airy disk diameter, root mean square （RMS） error diameter and total axial length of the model were provided from the program. These were compared between them in all distances. The Navarro model had the smallest axial length change as a simple model. The Arizona did not change its axial length because it is designed to be accommodative. The Liou-Brennan model had different results concerning the aberrations because of the decentration of the pupil. The MTF graphs showed small differences between the models because of the differences in their ***： All the three models are able to simulate accommodation with the expected results. There is no model that can be assumed as the best choice. Accommodation can be simulated in non-accommodativemodels and in customized ones.

关键词： accommodation design eye model optical

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

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：