检索结果-南通市图书馆

Effect of wall-disruption on nutrient composition and in vitro digestion of camellia and lotus bee pollens

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第3期13卷 1567-1577页

作者： Yuan Yuan Shun Zhong Zeyuan Deng guangyan Li Jinwu zhang Hongyan Li State Key Laboratory of Food Science and Resources Nanchang UniversityNanchang 330047China Nanchang Tongxin Zichao Biological Engineering Co. Ltd.Nanchang 330052China

The nutrient digestion,absorption and biological activity of bee pollen may be limited due to the complex pollen ***,the effect of superfine grinding technology on the release of nutrients from bee pollen were investigated,and their antioxidant activities and in vitro digestion were explored in this *** showed that the content of nutrients in bee pollen increased after wall *** them,fat content increased by 22.55%-8.31%,protein content increased by 0.54%-4.91%,starch content increased by 36.31%-48.64%,soluble sugar content increased by 20.57%-29.67%,total phenolic acid content increased by 11.73%-86.98%and total flavonoids content increased by 14.29%-24.79%.At the same time,the antioxidant activity increased by 14.84%-46.00%.Furthermore,the active components such as phenolic compounds in the wall-disruption bee pollen were more readily to be released during the in vitro digestion,and easier to be absorbed because of their higher *** activities during in vitro digestion were also improved in walldisruption bee *** findings provide evidence that bee pollen wall disruption was suggested,thus,it is more conducive to exerting the value of bee pollen in functional foods.

关键词： Bee pollen Nutrients Wall disruption Phenolic compounds In vitro digestion

Controlling Three-Step and Five-Step Spin Transitions by Polymorphism in an Fe^(Ⅲ) Spin Crossover Complex

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2024年第8期42卷 879-886页

作者： Yingying Wu Shuang Peng Ziyi zhang Yue Gao guangyan Xu Jingwei Dai Zhao-Yang Li Masahiro Yamashita School of Materials Science and Engineering Nankai University38 Tongyan RoadHaihe Educational ParkTianjin300350 China State Key Laboratory of Medicinal Chemical Biology Nankai UniversityTianjin300071 China Department of Chemistry Graduate School of ScienceTohoku UniversitySendai980-8578 Japan

Comprehensive Summary,Regulating spin crossover(SCO)behavior,especially controlling the spin transition steps,is an important scientific issue,mainly because people aim to control spin bistability and ***,SCO bistability can be regulated by changing the ligand-modifying species,non-coordinated anions,guest molecules,and metal-ion ***,the control of multistability is extremely challenging,especially in Fe(III)SCO ***,we report that[FeIII(H-5-Br-thsa)(5-Br-thsa)]·H2O(5-Br-thsa=(5-bromo-2-hydroxybenzylidene)hydrazinecarbothioamide),a compound we have reported before,exists in two polymorphic forms:polymorph 1 exhibits three-step SCO,and polymorph 2 shows five-step SCO,with multi-step SCO behavior effectively regulated by *** to single-crystal and powder X-ray diffractometry,polymorphs 1 and 2 crystallize in different space groups during their spin transitions,with two-step symmetry breaking observed(Pbcn→Pnc2→Pbcn for polymorph 1;P21/n→Pn→P21/n for polymorph 2).We realized that the behavior of these two polymorphs depends significantly on the structure,including(i)the average Fe—N bond distance,(ii)deformation of octahedral FeIII atoms,and(iii)distinct crystal packing,which account for the large differences observed in magnetic properties.

关键词： Spin crossover Multi-step spin transition Symmetry breaking Polymorphism Magnetic property

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

某住宅建筑空气源热泵采暖系统能耗优化分析

建筑节能（中英文） 2024年第2期52卷 122-128页

作者：张峰鸣王海英崔茁庄绪成张广岩苏以通魏刚许哲文胡松涛青岛理工大学环境与市政工程学院山东青岛266520 青岛海信日立空调系统有限公司山东青岛266071 青岛国际机场集团有限公司山东青岛266000

针对青岛某户式空气源热泵系统冬季供暖测试中存在的问题,如房间温度超标、无人时房间也开启供暖等,进一步对系统的运行控制进行了优化模拟。通过调整室内温度设定值及考虑房间使用时间等,分析了不同控制方式下的系统能耗情况。结合房... 详细信息

针对青岛某户式空气源热泵系统冬季供暖测试中存在的问题,如房间温度超标、无人时房间也开启供暖等,进一步对系统的运行控制进行了优化模拟。通过调整室内温度设定值及考虑房间使用时间等,分析了不同控制方式下的系统能耗情况。结合房间实际使用情况,建筑2层房间仅在周末时使用,对此进行了房间供暖末端的启停设置。在采暖设定温度与实测温度相同时,通过关闭2层不使用的房间供暖末端进行系统控制,单位建筑面积能耗和电耗分别下降21.1%和20.9%。当供暖季所有房间供暖末端开启时,室内温度均按照集中供热室内设计采暖温度18℃设定,单位面积能耗和电耗分别为81.7 kW·h/m^(2)、22.1 kW·h/m^(2),较实际系统下降了23.7%、21.4%;当房间2层供暖末端仅周末开启时,室内温度设定为18℃,单位建筑面积能耗和电耗分别降低为58.4 kW·h/m^(2)、15.5 kW·h/m^(2)。与实测能耗相比,通过运行优化控制,单位建筑面积供热量最大可降低45.4%,耗电量降低44.9%。相关分析结果为空气源热泵户式独立供暖系统的节能运行提供了参考。

关键词：空气源热泵户式独立采暖能源消耗节能优化控制

维普期刊数据库博看期刊

Interface sites on vanadia-based catalysts are highly active for NO_(x) removal under realistic conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第2期136卷 523-536页

作者： Zhihui Lv Guangzhi He Wenshuo zhang Jingjing Liu Zhihua Lian Yang Yang Zidi Yan guangyan Xu Wenpo Shan Yunbo Yu Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China Ningbo Research Center for Urban Environment Chinese Academy of SciencesNingbo 315800China

TiO_(2)-supported V_(2)O_(5)catalysts are commonly used in NO_(x)reduction with ammonia due to their robust catalytic *** these catalysts,it is generally considered that the active species are mainly derived from the vanadia species rather than the intrinsic structure of V-O-Ti entities,namely the interface *** reveal the role of V-O-Ti entities in NH_(3)-SCR,herein,we prepared TiO_(2)/V_(2)O_(5)catalysts and demonstrated that V-O-Ti entities were more active for NO_(x)reduction under wet conditions than the V sites(V=O)working *** the V-O-Ti entities,kinetic measurements and first principles calculations revealed that NH_(3)activation exhibited a much lower energy barrier than that on V=O *** wet conditions,the V-O-Ti interface significantly inhibited the transformation of V=O to V-OH sites thus benefiting NH_(3)*** wet conditions,meanwhile,the migration of NH_(4)^(+)from Ti site neighboring the V-O-Ti interface to Ti site of the V-O-Ti interface was exothermic;thus,V-O-Ti entities together with neighboring Ti sites could serve as channels linking NH_(3)pool and active centers for activation of NH_(4)^(+).This finding reveals that the V-O-Ti interface sites on V-based catalysts play a crucial role in NO_(x)removal under realistic conditions,providing a new perspective on NH_(3)-SCR mechanism.

关键词： NO_(x)removal Vanadia-based catalysts V-O-Ti entities Interface sites Reaction mechanism

Design and application of new storage systems

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2023年第5期24卷 633-636页

作者： guangyan zhang Dan FENG Keqin LI Zili SHAO Nong XIAO Jin XIONG Weimin ZHENG Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan 430074China Department of Computer Science State University of New YorkNY 12561USA Department of Computer Science and Engineering The Chinese University of Hong KongHong KongChina School of Computer Science and Engineering Sun Yat-sen UniversityGuangzhou 510000China Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China

A storage system is the core of a computer,and plays an important role in the sustainable development of emerging strategic industries,such as artificial intelligence,big data,cloud computing,and the Internet of *** stack access is a major factor restricting the performance of data-intensive systems because of the increasing performance of processors and network devices.

关键词： computer artificial application

在线全文

学校读者我要写书评

暂无评论

分级存储系统中一种数据自动迁移方法

计算机研究与发展 2012年第8期49卷 1804-1810页

作者：张广艳丘建平清华大学计算机科学与技术系北京100084 符号计算与知识工程教育部重点实验室(吉林大学) 长春130012

分级存储系统通过将数据在不同性能设备间动态迁移以达到高性能.已有分级存储系统未能充分利用负载信息导致数据迁移严重影响应用性能.提出了一种分级存储系统中的数据自动迁移方法AutoMig,目标是提高前台应用的I?O性能.AutoMig综合文... 详细信息

分级存储系统通过将数据在不同性能设备间动态迁移以达到高性能.已有分级存储系统未能充分利用负载信息导致数据迁移严重影响应用性能.提出了一种分级存储系统中的数据自动迁移方法AutoMig,目标是提高前台应用的I?O性能.AutoMig综合文件访问历史、文件大小、设备利用情况等参数,对文件进行动态分级,并使用LRU队列维护快速存储设备中的文件状态;挖掘关联文件用于自动预取;针对不同文件迁移操作采取不同的速率控制策略.对降级操作,根据负载变化动态调整迁移速率,对回迁操作则采取尽力而为的策略.在分级存储系统中的应用表明,与已有方法相比,AutoMig有效缩短了前台I?O响应时间.

关键词：分级存储数据迁移数据分级关联挖掘速率控制

Synthesis of chondroitin sulfate E（CS-E） repeating unit

在线全文

学校读者我要写书评

暂无评论

Synthesis of chondroitin sulfate E（CS-E） repeating unit

The exploration of ketolide antibiotics with new mother structure

中国化学会第十三届全国有机合成化学学术研讨会

作者： Qi Liu Shuang Yang guangyan zhang Xiaoxi zhang Zhehui Zhao Institute of Materia Medica Chinese Academy of Medical Sciences ＆ Peking Union Medical College

Glycosaminoglycan chains found in proteoglycans consist of a common tetrasaccharide and different types of repeating disaccharide *** on the type of disaccharide unit,which is composed of hexosamine and hexuronic acid,they are classified into heparidheparan sulfate and chondroitin sulfate/dermatan *** construction of the chondroitin sulfate E（CS-E） repeating unit was *** of nonoxidized disaccharide to CS-E repeating unit was easily processed with high yield,demenstrating the feasibility of postglycosylation-oxidation strategy in synthesis of CS-Eoligosaccharides.

关键词： chondroitin sulfate E synthesis

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

The exploration of ketolide antibiotics with new mother stru...

A Case Report of Thyroid Gland Squamous Carcinoma with Multiple Metastases

中国化学会第十三届全国有机合成化学学术研讨会

作者： Xiaoxi zhang Shuang Yang guangyan zhang Qi Liu Zhehui Zhao Institute of Materia Medica Chinese Academy of Medical Sciences ＆ Peking Union Medical College

Ketolide antibiotics have been in clinical practice has been widely used,owing to its broad antimicrobial spectrum,convenience to take,satety,low side effects in clinical use and so ***,the phenomena such as the abusement of antibiotics and the intensive emergence of antibacterial resistance against antibiotics with high activity,low toxicity has become the main direction of the current study.

关键词： ketolide telithromycin quinoline

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

Chinese Journal of Clinical Oncology 2007年第2期4卷 145-146页

作者： Jing Zhao guangyan Hu Lu zhang Guoqing Hu Tongji Hospital Cancer Centre Affiliated Tongji Medical College of Huazhong University of Science ＆ Technology Wuhan 430030 China

The patient was a female, 65 years to feel intermittent discomfort in old. Early in 1996, she began her neck, accompanied with hoarseness. In June, 2000, when she entered our hospital and accepted a physical examination, we found a 3 cm×2 cm tumor at the lower pole of the thyroid gland. Neck CT showed that the mass was located at the inferiorposterior right part of the thyroid gland with a diffuse boundary. MRI showed that the right thyroid cartilage wall was incomplete. Fine-needle aspiration cytology indicated a suspected papillary tumor.

关键词： thyroid gland cancer squamous carcinoma treatment prognosis