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Science China Materials 2022年第2期65卷 413-421页

作者： Fei-Fei Chen Jianfeng Chen Ya-nan feng Lingyun Li Yan Yu Key Laboratory of Advanced Materials Technologies College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

An efficient photocatalytic CO_(2) reduction has been reported in ZIF-67-derived-Co nanoparticles(NPs)encapsulated in nitrogen-doped carbon layers(N-C/Co).This work demonstrates that the pyrolysis temperature is crucial in tuning the grain size and components of metallic Co^(0) of N-C/Co composite catalysts,which optimizes their photocatalytic *** were conducted at 600,700,and 800℃ giving the N-C/Co-600,N-C/Co-700,and N-C/Co-800 samples,respectively.N-C layers can well wrap the Co NPs obtained at a low pyrolysis temperature(600℃)owing to their smaller grains than those of other samples.A high metallic Co^(0) content in the N-C/Co-600 sample can be attributed to the effective inhibition of surface *** contrast,the surface CoOx oxides in the N-C/Co-700 and N-C/Co-800 samples cover inside Co cores,inhibiting charge separation and *** a result,the N-C/Co-600 sample yields the best photocatalytic *** carbon monoxide and hydrogen generation rates are as high as 1.62×10^(4) and 2.01×10^(4)μmol g^(−1)h^(−1),***,the Co NPs make composite catalysts magnetic,enabling rapid and facile recovery of catalysts with the assistance of an external magnetic *** work is expected to provide an instructive guideline for designing metal-organic framework-derived carbon/metal composite catalysts.

关键词： ZIF-67 Co nanoparticles N-doped C photocatalysis CO2 reduction

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碱—酶法提取硫酸软骨素的工艺研究

食品与生物技术学报 2010年第1期29卷 81-83页

作者：吴枫楠吉林龙谷生物科技有限公司吉林132101

研究以猪软骨组织为原料,采用碱液提取和酶解相结合的方式提取硫酸软骨素。通过对影响碱液提取效率和酶解效果因素的研究,确定了碱液提取的最佳条件为:碱液的体积分数7.5%、提取温度为50℃、提取时间2 h、提取2次。酶解的最佳条件为:采... 详细信息

研究以猪软骨组织为原料,采用碱液提取和酶解相结合的方式提取硫酸软骨素。通过对影响碱液提取效率和酶解效果因素的研究,确定了碱液提取的最佳条件为:碱液的体积分数7.5%、提取温度为50℃、提取时间2 h、提取2次。酶解的最佳条件为:采用木瓜蛋白酶和胰蛋白酶的混合酶1∶1(w∶v)、添加质量分数1.0%,pH值8、提取36 h。

关键词：硫酸软骨素碱—酶法木瓜蛋白酶胰蛋白酶猪软骨

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紧邻既有结构的深基坑受力变形特性分析

上海交通大学学报 2016年第10期50卷 1658-1664页

作者：陈树林张峰代楠山东省建筑科学研究院济南250031 泰安市工程质量检测中心泰安271000

基于考虑土体排水条件的摩尔库伦本构模型,采用有限差分软件FLAC3D建立准三维数值模型,模拟了有无邻近地下结构的基坑开挖过程并进行对比分析,得到了邻近地下结构深基坑的围护结构的受力变形特性.进一步研究了基坑围护结构土压力分布和... 详细信息

基于考虑土体排水条件的摩尔库伦本构模型,采用有限差分软件FLAC3D建立准三维数值模型,模拟了有无邻近地下结构的基坑开挖过程并进行对比分析,得到了邻近地下结构深基坑的围护结构的受力变形特性.进一步研究了基坑围护结构土压力分布和水平位移与基坑和地下结构间距的关系,揭示了地下结构对邻近基坑围护结构受力变形影响的机理.结果表明,地下结构使坑间土体产生土拱效应而减小邻近基坑围护结构的变形;围护结构最大水平位移随着坑间距减小呈非线性减小;间距的变化会影响坑内外土体的变形受力;既有地下结构与邻近基坑的临界间距为1.5倍开挖深度.

关键词：基坑开挖地下结构围护结构临界间距主动土压力

跨国公司环境损害的救济途径--从厄瓜多尔原告诉雪佛龙公司污染环境案谈起

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经济与管理研究 2011年第6期32卷 120-123页

作者：冯雅囡中国人民大学北京100872

随着经济全球化的深入发展,发达国家不断将高能耗、高排放、高污染的生产加工企业向发展中国家转移,跨国公司环境污染行为愈演愈烈。在这一背景下,深入思考和研究跨国公司环境侵害案件发生后,受害方如何选择有效的救济方式以最大限度地... 详细信息

随着经济全球化的深入发展,发达国家不断将高能耗、高排放、高污染的生产加工企业向发展中国家转移,跨国公司环境污染行为愈演愈烈。在这一背景下,深入思考和研究跨国公司环境侵害案件发生后,受害方如何选择有效的救济方式以最大限度地减少利益受损有着积极的现实意义。本文结合迄今为止全球最大的环境诉讼案对这一问题进行了分析,并提出了五种救济途径。

关键词：跨国公司环境损害司法救济厄瓜多尔雪佛龙

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基于词共现的文档表示模型

中文信息学报 2012年第1期26卷 51-57页

作者：常鹏冯楠天津大学管理学院天津300072 天津大学网络与信息中心天津300072

文档表示模型是文本自动处理的基础,是将非结构化的文本数据转化为结构化数据的有效手段。然而,目前通用的空间向量模型(Vector Space Model,VSM)是以单个的词汇为基础的文档表示模型,因其忽略了词间的关联关系,导致文本挖掘的准确率难... 详细信息

文档表示模型是文本自动处理的基础,是将非结构化的文本数据转化为结构化数据的有效手段。然而,目前通用的空间向量模型(Vector Space Model,VSM)是以单个的词汇为基础的文档表示模型,因其忽略了词间的关联关系,导致文本挖掘的准确率难以得到很大的提升。该文以词共现分析为基础,讨论了文档主题与词的二阶关系之间的潜在联系,进而定义了词共现度及与文档主题相关度的量化计算方法,利用关联规则算法抽取出文档集上的词共现组合,提出了基于词共现组合的文档向量主题表示模型(Co-occurrence Term based Vector SpaceModel,CTVSM),定义了基于CTVSM的文档相似度。实验表明,CTVSM能够准确反映文档之间的相关关系,比经典的文档向量空间模型(Vector Space Model,VSM)具有更强的主题区分能力。

关键词：文档建模词共现文档相似度文本挖掘

Common variants in PERK, JNK, BIP and XBP1 genes are associated with the risk of prediabetes or diabetes-related phenotypes in a Chinese population

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Chinese Medical Journal 2014年第13期127卷 2438-2444页

作者： feng nan Ma Xiaowei Wei Xiaowei Zhang Junqing Dong Aimei Jin Mengmeng Zhang Hong Guo Xiaohui Department of Endocrinology Peking University First HospitalBeijing 100034 China Department of Endocrinology General Hospital of Chinese People'sLiberation Army Beijing 100853 China

Background Prediabetes is an early stage of β-cell dysfunction presenting as insulin *** suggest that endoplasmic reticulum （ER） stress is involved in the pathogenesis of type 2 diabetes mellitus and *** a Chinese population with prediabetes,we investigated single nucleotide polymorphisms （SNPs） in the genes of PERK,JNK,XBP1,BIP and CHOP which encode molecular proteins involved in ER stress *** Nine SNPs at the PERK,JNK,XBP1,BIP and CHOP loci were genotyped by mass spectrometry in 1 448 unrelated *** using a 75 g oral glucose tolerance test （OGTT）,828 subjects were diagnosed as prediabetes and 620 subjects aged 55 years and over as normal controls based on WHO diagnostic criteria （1999） for diabetes *** The allele C of SNP rs867529 at PERK locus was a risk factor for prediabetes,with the carriers of C allele genotype at a higher risk of prediabetes compared to non-carriers （OR=1.279,95％ CI：1.013-1.614,P=0.039,after adjustment for age,sex and body mass index （BMI）.The SNPs rs6750998 at PERK locus was associated with homeostasis model assessments of insulin resistance （HOMA-IR）（P=0.019）,and rs17037621 with BMI （P=0.044）.The allele G of SNP rs10986663 in BIP gene was associated with a decreased risk of prediabetes （OR=0.699,95％ CI：0.539-0.907,P=0.007）.The SNP rs2076431 in JNK gene was associated with fasting plasma glucose levels （P=0.006） and waist-hip ratios （P=0.019）.The SNP rs2239815 in XBP1 gene was associated with 2-hour plasma glucose levels after 75 g oral glucose load （P=0.048） in the observed *** Common variants at PERK and BIP loci contributed to the risk of prediabetes,and the genetic variations in JNK and XBP1 genes are associated with diabetes-related clinical parameters in this Chinese population.

关键词： unfolded protein response pathway genes endoplasmic reticulum stress single nucleotide polymorphisms prediabetes

A fault isolation method using kernel canonical variate analysis-based contribution

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A fault isolation method using kernel canonical variate anal...

Genetic variability in eIF2A gene is associated with isletβ-cell function in a Chinese Han population

第35届中国过程控制会议

作者： Hongxin Wang Lingxia Mu nan feng Han Liu Ding Liu Department of Information and Control Xi'an University of Technology Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi'an University of Technology School of Intelligence Science and Technology University of Science and Technology Beijing

Fault diagnosis and isolation is important for industrial system. In this paper, a kernel canonical variate analysis(KCVA) is proposed for fault isolation. KCVA is originally used as a data dimension reduction technique which can account for nonlinearity and correlations in the industrial dynamical process data. But there are some difficulties using KCVA in the construction of the contribution for the fault isolation. On the one hand, it is difficult to compute the contributions of individual variables because it is scarcely possible to find an inverse mapping from the feature space to the original space. On the other hand, a smearing effect is hardly avoided. To solve the problem, a KCVA-based contributions is proposed using the state subspace and the residual subspace which can isolate the faulty variables effectively. Simulations are conducted on the Tennessee Eastman process to verify the performance of the proposed method.

关键词： Kernel canonical variate analysis contribution plot fault isolation

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Genetic variability in eIF2A gene is associated with isletβ...

Genetic Variability in GLP-1R Gene is Associated with Risk of Coronary Artery Disease in Type 2 Diabetes in A Chinese Han Population

中华医学会糖尿病学分会第十六次全国学术会议

作者： MA Xiao-wei ZHANG Jian-wei JIN Meng-meng GU nan feng nan GUO Xiao-hui Peking University First Hospital

Objective Accumulation of unfolded or misfolded proteins in the endoplasmic reticulum(ER) induces the ER stress response,otherwise known as the unfolded protein response(UPR),which plays an important role in chronic metabolism disease,such as type 2 ***,a state of type 2 diabetes,presents with an early stage of (3 -cell dysfunction and insulin ***2A promotes the phosphorylation of eIF2a,one of the key signaling

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Genetic Variability in GLP-1R Gene is Associated with Risk o...

中华医学会第十二次全国内分泌学学术会议

作者： Xiaowei Ma ran Lu nan feng xiaowei Wei nan Gu ge Bai jianwei Zhang xiaohui Guo endocrinology department Peking University First Hospital

Objective Previous studies have proved that GLP-1 had cardiovascular protective effects by directly acting on cardio-vascular system or by improving metabolism,which are both believed to be mediated at least partially by glucagon-like peptide-1(GLP-1) receptor(GLP-1R).The aim of our study is to investigate whether or not the genetic variability in gene GLP-

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服装使用环节碳足迹核算分析

毛纺科技 2014年第8期42卷 53-56页

作者：郝淑丽冯楠北京服装学院商学院北京100029

对服装使用环节的碳足迹核算进行具体分析。通过对服装使用流程进行详细的描述,提出了服装的使用流程主要包含穿着、洗护、贮存3个环节,每个环节都会消耗相应的能源和排放一定的污染物,从而存在碳排放。在此基础上,逐一对服装洗涤环节... 详细信息

对服装使用环节的碳足迹核算进行具体分析。通过对服装使用流程进行详细的描述,提出了服装的使用流程主要包含穿着、洗护、贮存3个环节,每个环节都会消耗相应的能源和排放一定的污染物,从而存在碳排放。在此基础上,逐一对服装洗涤环节、烘干环节、褽烫环节、贮存环节的GHG排放源进行详细描述,以女式纯棉T恤为例,对服装使用环节的碳足迹评估方法进行了具体表述,提出服装使用阶段对全球变暖的贡献最大,并据此提出,要实现碳减排,消费者在服装使用过程中要养成良好的生活习惯,从我做起,约束自己的行为。

关键词：服装使用环节温室气体碳足迹