检索结果-南通市图书馆

Identification　and　mechanism　of　formation　of　certain　mutagenic　components　in　the　volatile　condensates　from　oxidized　and　heated　edible　oils

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 1994年第2期6卷 200-205页

作者： bao ziping he Jianquan hou fuzhong(Institute of Environmental Sciences, Beijing Normial University, Beijing 100875, China)

Edible oils-rapeseed oil, soybean oil and peanut oil are heated in air at 270-280 ℃respectively. The volatile condensates are collected and analyzed by means of GC/MS. Eithercrotonaldehyde or 2-methylacrolein is found respectively in the condensates of rapeseed oil andsoybean oil. Neither crotonaldehyde nor 2-methylacrolein is found in the condensates of peanut *** of formation of crotonaldehyde is discussed.

关键词： edible oils volatile condensates mutagens crotonaldehyde 2-methylacrolein.

Haem Oxygenase 1 is a potential target for creating etiolated/albino tea plants (Camellia sinensis) with high theanine accumulation

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2023年第2期10卷 194-202页

作者： ziping Chen Shijia Lin Tingting Chen Mengxue Han Tianyuan Yang Yan Wang Shilai bao Zhougao Shen Xiaochun Wan Zhaoliang Zhang State Key Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefei230036China Anhui Promotion Center for Technology Achievements Transfer Anhui Academy of Science and TechnologyHefei230031China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing100101China School of Life Sciences University of Chinese Academy of SciencesBeijing100049China

Theanine content is highly correlated with sensory quality and health benefits of tea *** tender shoots of etiolated and albino tea plants contain higher theanine than the normal green tea plants and are valuable materials for high quality green tea ***,why these etiolated or albino tea plants can highly accumulate theanine is largely *** this study,we observed an Arabidopsis etiolated mutant hy1–100(mutation in Haem Oxygenase 1,HO1)that accumulated higher levels of glutamine(an analog of theanine).We therefore identified CsHO1 in tea plants and found CsHO1 is conserved in amino acid sequences and subcellular localization with its homologs in other ***,CsHO1 expression in the new shoots was much lower in an etiolated tea plants‘Huangkui’and an albino tea plant‘Huangshan Baicha’than that in normal green tea *** expression levels of CsHO1 were negatively correlated with theanine contents in these green,etiolated and albino ***,CsHO1 expression levels in various organs and different time points were also negatively correlated with theanine *** hy1–100 was hypersensitive to high levels of theanine and accumulated more theanine under theanine feeding,and these phenotypes were rescued by the expression of CsHO1 in this *** knockdown CsHO1 expression in the new shoots of tea plant using antisense oligonucleotides(asODN)increased theanine ***,these results demonstrated CsHO1 negatively regulates theanine accumulation in tea plants,and that low expression CsHO1 likely contributes to the theanine accumulation in etiolated/albino tea plants.

关键词： organs Oxygen high

Self-attention transfer networks for speech emotion recognition

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

Virtual Reality & Intelligent Hardware 2021年第1期3卷 43-54页

作者： ziping ZHAO Keru Wang Zhongtian bao Zixing ZHANG Nicholas CUMMINS Shihuang SUN Haishuai WANG Jianhua TAO Björn WSCHULLER College of Computer and Information Engineering Tianjin Normal UniversityTianjin 300387China GLAM-Group on Language Audio&MusicImperial College LondonSW72AZUK Chair of Embedded Intelligence for health Care and Wellbeing University of Augsburg86159Germany Department of Biostatistics and health Informatics IoPPNKing's College LondonLondonSE58AFUK Department of Computer Science and Engineering Fairfield University 06824USA National Laboratory of Pattern Recognition CASIABeijing 100190China

Background A crucial element of human-machine interaction,the automatic detection of emotional states from human speech has long been regarded as a challenging task for machine learning *** vital challenge in speech emotion recognition(SER)is learning robust and discriminative representations from *** machine learning methods have been widely applied in SER research,the inadequate amount of available annotated data has become a bottleneck impeding the extended application of such techniques(e.g.,deep neural networks).To address this issue,we present a deep learning method that combines knowledge transfer and self-attention for SER ***,we apply the log-Mel spectrogram with deltas and delta-deltas as ***,given that emotions are time dependent,we apply temporal convolutional neural networks to model the variations in *** further introduce an attention transfer mechanism,which is based on a self-attention algorithm to learn long-term *** self-attention transfer network(SATN)in our proposed approach takes advantage of attention transfer to learn attention from speech recognition,followed by transferring this knowledge into *** evaluation built on Interactive Emotional Dyadic Motion Capture(IEMOCAP)dataset demonstrates the effectiveness of the proposed model.

关键词： Speech emotion recognition Attention transfer Self-attention Temporal convolutional neural networks(TCNs)

Rapid Assessment on Potential Risks of Schistosomiasis Transmission—7 PLADs,China,2019 and 2021

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2021年第51期3卷 1089-1092页

作者： Junyi he Hongqing Zhu ziping bao Lijuan Zhang Yinlong Li Ting Feng Suying Guo Wangping Deng Can Wang Hui Dang Tiewu Jia Chao Lyu Zhiqiang Qin Chunli Cao Jing Xu Shizhu Li Xiaonong Zhou National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghaiChina.

Summary What is already known about this topic?Oncomelania hupensis(***)and livestock are main infection sources of *** schistosome infected *** and livestock’s feces are important risk factors in the transmission of *** is added by this report?The potential risks of schistosomiasis transmission remain prevalent,giving an early warning to local government with information on existing transmission *** is expected that the effectiveness and efficiency of schistosomiasis surveillance could be improved by conducting rapid risk assessment at the beginning of transmission season.

关键词： schistosomiasis Schistosomiasis conducting

热等离子射流法Co_2O_3/FeS催化裂解甲烷制备碳纳米管的研究

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

化工新型材料 2009年第11期37卷 61-62,107页

作者：朱自平鲍卫仁李小丽太原理工大学煤科学与技术教育部与山西省重点实验室太原030024

以Co2O3和FeS的混和物做催化剂前驱物,利用热等离子射流法制得包含碳纳米管的固相物,通过扫描电镜、透射电镜对产物进行表征并与高纯单质金属催化碳纳米管生长的类似文献报道做对比,证实其中碳纳米管密度大、纯度高、管径分布小、大部分... 详细信息

以Co2O3和FeS的混和物做催化剂前驱物,利用热等离子射流法制得包含碳纳米管的固相物,通过扫描电镜、透射电镜对产物进行表征并与高纯单质金属催化碳纳米管生长的类似文献报道做对比,证实其中碳纳米管密度大、纯度高、管径分布小、大部分为50～90nm的直线型多壁管且相互独立、管壁平滑、厚度约为10nm,在数量和质量上均可与已报道文献相比。结果表明,催化剂中微量氧的存在不仅不会影响催化效果,还有助于提高产物中碳纳米管纯度。

关键词：热等离子射流甲烷碳纳米管催化剂

在线全文

学校读者我要写书评

暂无评论

酚类及羟基化合物对BaP代谢影响的研究

环境科学学报 1987年第2期 181-185页

作者：侯福忠鲍子平王志远北京师范大学环境科学研究所北京师范大学环境科学研究所劳动保护人事部劳动保护科学研究所

经叔-丁基-羟基-苯甲醚(BHA)对照、HPLC分析结果表明,天然化合物如从甜瓜蒂(Cucumis melo L. cucurbitaceae)提取的葫芦素B、从徐长卿根(Pycnostelma paniculatum(Bge)***)提取的牡丹酚、人工合成的对乙氧基苯酚及维生素E中间体2,3,5-... 详细信息

经叔-丁基-羟基-苯甲醚(BHA)对照、HPLC分析结果表明,天然化合物如从甜瓜蒂(Cucumis melo L. cucurbitaceae)提取的葫芦素B、从徐长卿根(Pycnostelma paniculatum(Bge)***)提取的牡丹酚、人工合成的对乙氧基苯酚及维生素E中间体2,3,5-三甲基氢醌对BaP在大鼠肝微粒体体外代谢均有不同程度的抑制作用。当其浓度为25μM时,对BaP9,10-二醇及9-OHBaP的生成抑制较对BaP7,8-二醇及BaP4,5-二醇的更强。

关键词： BaP代谢葫芦素B 牡丹酚对一乙氧基苯酚三甲基氢醌

岷江干旱河谷灌丛土壤种子库及其自然更新潜力评估

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

生态学报 2010年第2期30卷 399-407页

作者：李彦娇包维楷吴福忠中国科学院成都生物研究所成都610041 中国科学院研究生院北京100039

为了解岷江干旱河谷区灌丛植被土壤种子库的特征及预测灌丛植被自然更新的潜力,利用土壤种子库"萌发法"(每个地段15个2m×2m样方内分土表层、0-5cm土层和5-10cm土层采集土样)及野外植被调查方法(每个地段15个1m×1m的调查样方),研究了... 详细信息

为了解岷江干旱河谷区灌丛植被土壤种子库的特征及预测灌丛植被自然更新的潜力,利用土壤种子库"萌发法"(每个地段15个2m×2m样方内分土表层、0-5cm土层和5-10cm土层采集土样)及野外植被调查方法(每个地段15个1m×1m的调查样方),研究了岷江干旱河谷3个地段(河谷下游边缘汶川地段、核心茂县地段以及上游边缘松潘地段)阳坡灌丛植被土壤种子库及其与地上植物群落的关系。发现:土壤种子库发芽试验共观察到4274株幼苗,分属于113个物种。土壤种子库密度在102—103ind./m2,物种数在12—23种/0.06m2,边缘地段的土壤种子库平均种子密度(ind./m2)和平均物种数(种/0.06m2)均比中心地段(茂县)高。3个地段土壤种子库和地上植被的组成物种均多为多年生植物,地上灌丛与其土壤种子库的密度及物种数均呈不显著相关性;物种组成的Sorensen相似性指数较低,不足30%,但土壤种子库均比地上植被具有更高的物种丰富度。综合分析表明,岷江干旱河谷灌丛具有依靠土壤种子库实现自然更新的潜力,但由于物种组成相似性较低,现存灌丛植被一旦遭到破坏后,单依靠土壤种子库自然恢复到现存植被是困难的,需要在自然恢复潜力评估基础上积极充分采取人工促进自然恢复的策略,同时也应充分考虑干旱河谷植被及其自然更新潜力的空间异质性。探明岷江干旱河谷区灌丛植被的土壤种子库特征,是认识灌丛植被自然更新潜力的基础,是合理制订该区植被恢复与管理措施的重要依据。

关键词：地上植被土壤种子库萌发恢复物种组成物种丰富度

在线全文

学校读者我要写书评

暂无评论

宝钢大型热网的计算机优化控制

自动化仪表 2000年第3期21卷 31-35页

作者：田子平鲍福民上海交通大学能源系上海200240 宝山钢铁(集团)公司能源部上海201900

为改善宝钢热网不稳定而影响生产的被动局面，减少经济损失，提高整个公司的能源利用率，建立了大型热网用的仿真数学模型、故障处理专家系统和经济运行专家系统。本文对此及其在线运行结果作了介绍。

关键词：优化控制钢铁企业热网计算机专家系统

Incidence of Major Adverse Cardiovascular and Cerebrovascular Events in Chinese Patients Undergoing Percutaneous Coronary Intervention with Iodixanol: An Observational Postauthorization Study

在线全文

学校读者我要写书评

暂无评论

Cardiology Discovery 2023年第2期3卷 95-101页

作者： Xiaozeng Wang Dengfeng Ma Tianchang Li bao Li Xi Su Yanqing Wu Zhimin Du Zheng Ji Ping Yang Baisong Yang Xuebin Cao Junxia Li Fengxia hou ziping Cheng Banglong Xu Yaling Han General Hospital of Northern Theater Command ShenyangLiaoning 110016China Taiyuan Center Hospital TaiyuanShanxi 030009China Navy General Hospital of Chinese People’s Liberation Army Beijing 100048China Shanxi Cardiovascular Hospital TaiyuanShanxi 30001China Wuhan Asia heart hospital WuhanHubei 430022China The Second Affiliated Hospital of Nanchang University NanchangJiangxi 330012China The First Affiliated Hospital of Sun Yat-sen University GuangzhouGuangdong 510120China Tangshan Gongren Hospital TangshanHebei 063000China China-Japan Union Hospital of Jilin University ChangchunJilin 130031China Air Force Hospital of Northern Theater Command ShenyangLiaoning110042China Hospital 252 of Chinese People’s Liberation Army BaodingHebei 071066China General Hospital of Chinese People’s Liberation Army Beijing 100853China Changchun Central Hospital ChangchunJilin 130051China The First Affiliated Hospital of Anhui Medical University HefeiAnhui 230022China The Second Affiliated Hospital of Anhui Medical University HefeiAnhui 230601China.

Objective:This study aimed to evaluate the major adverse cardiovascular and cerebrovascular events(MACCEs)and overall safety profile associated with iodixanol in Chinese patients undergoing percutaneous coronary intervention(PCI).Methods:Patients at 30 centers in China registered in the OpenClinic v3.6 database from October 30,2013,to October 7,2015,were included in the *** primary endpoint was in-hospital MACCEs including target lesion revascularization(TLR),stroke,stent thrombosis,cardiac death,and PCI-related myocardial infarction(MI)within 72 h *** endpoints were MACCEs from 72 h to 30 d post-PCI and other safety events within 30 d ***:A total of 3,042 patients were *** incidence of MACCEs within 72 h post-PCI was 2.33%(n=71),including cardiac death(0.03%,n=1)and PCI-related MI(2.30%,n=70).The incidence of MACCEs from 72 h to 30 d post-PCI was 0.16%(n=5),including cardiac death(0.10%,n=3),PCI-related MI(0.03%,n=1),and TLR for stent thrombosis(0.03%,n=1).The incidence of composite angiographic or procedural complications was 2.86%(n=87);233(7.86%)patients had results suggesting contrast-induced acute kidney ***:These findings indicate that the use of iodixanol in Chinese patients undergoing PCI is associated with a low incidence of MACCEs,confirming its safety in this population.

关键词： Percutaneous coronary intervention Contrast medium Adverse event Major adverse cardiovascular and cerebrovascular event Contrast-induced acute kidney injury