检索结果-南通市图书馆

Atomically Dispersed Pt and NiO Clusters Synergistically Enhanced C–O Bond Hydrogenolysis

CCS Chemistry 2024年第3期6卷 709-718页

作者： Junjuan Yang Sen Luan Minghua Dong Yuxuan Wu Xueqing Xing Xingwu liu Junfeng Xiang Zhijuan Zhao Shaopeng li Bin zhang Huizhen liu Buxing Han Beijing national Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049 Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsBeijing 100049 national Energy Center for Coal to liquids Synfuels China Co.Ltd.Huairou DistrictBeijing 101400 Center for Physicochemical Analysis and Measurement Institute of ChemistryChinese Academy of SciencesBeijing 100190 Physical Science Laboratory Huairou National Comprehensive Science CenterUniversity of Chinese Academy of SciencesBeijing 100049

C–Obond activation is a highly efficient,fundamental strategy in the depolymerization and hydrodeoxygenation of chemicals with oxygen-containing functional groups such as oil,coal,and *** efficient catalysts for C–Oactivation with ultralow-loading noble and non-noble metals is highly desirable for the improvement of metal atomic ***,bimetallic catalysts with atomically dispersed Pt and NiO clusters on different supports were fabricated,and the prepared Pt^(δ+)-NiO/Nb_(2)O_(5)and Pt^(δ+)-NiO/TiO_(2)showed outstanding activity for the hydrogenolysis of benzyl phenyl ether with>99%yield of phenol and toluene due to the excellent cooperation of atomically dispersed Pt and NiO *** synergy mechanism between Pt and Ni and their respective roles in the bimetallic catalyst for C–O hydrogenolysis were clearly *** findings deepen our understanding of the synergy of the two active components and are expected to provide new design concepts for the development of multicomponents catalysts.

关键词： bimetallic catalysis synergistic effect C-O bond activation hydrogenolysis hydrogen spillover

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

A fluorescence-enhanced inverse opal sensing film for multi-sources detection of formaldehyde

引用

Food Science and Human Wellness 2024年

作者： Xiaokang Lu Bo Han Deyilei Wei Mingzhu Chu Haojie Ma Ran li Xueyan Hou Yuqi zhang JiJiang Wang Key Laboratory of New Energy & New Functional Materials， Shaanxi Key Laboratory of Chemical Reaction Engineering， College of Chemistry and Chemical Engineering， Yan’an University

The SiO2inverse opal photonic crystals (PC) with a three-dimensional macroporous structure were fabricated by the sacrificial template method， followed by infiltration of a pyrene derivative， 1-(pyren-8-yl)but-3-en-1-amine (PEA)， to achieve a formaldehyde-sensitive and fluorescence-enhanced sensing film. Utilizing the specific Aza-Cope rearrangement reaction of allylamine of PEA and formaldehyde (FA) to generate a strong fluorescent product emitted at ～480 nm， we chose a PC whose blue band edge of stopband overlapped with the fluorescence emission wavelength. In virtue of the fluorescence enhancement property derived from slow photon effect of PC， FA was detected highly selectively and sensitively. The limit of detection (LoD) was calculated to be 1.38 nmol/L. Furthermore， the fast detection of FA (within 1 min) is realized due to the interconnected three-dimensional macroporous structure of the inverse opal PC and its high specific surface area. The prepared sensing film can be used for the detection of FA in air， aquatic products and living cells. The very close FA content in indoor air to the result from FA detector， the recovery rate of 101.5% for detecting FA in aquatic products and fast fluorescence imaging in 2 min for living cells demonstrate the reliability and accuracy of our method in practical applications.

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

Review of Baduanjin and resistance exercise for the mental health of patients with hematologic malignancies

引用

World Journal of Psychiatry 2024年第8期14卷 1165-1173页

作者： Ya-Zhou Shen Feng Chen Jia-Wen Yu Yan zhang ling-Xiang Lu Yong-li Huo Si-Ting Chu Bing Cao Lei-Wen Tang Department of Nursing Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Department of Nursing The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina

Patients with hematological tumors experience physical and psychological stress,and negative psychological ***,an emerging psychological rehabil-itation method combined with resistance exercise,has received widespread *** study reviews the current status of the application of Baduanjin combined with resistance exercise in improving the negative psychological state of patients with hematological tumors and discusses its problems and *** a literature review and comprehensive analysis,the application of Baduanjin and resistance exercise in the psychological rehabilitation of patients with hematological tumors was identified and *** results showed that Baduanjin with resistance exercise had a positive effect on improving negative psychological states of patients with hematological tumors,which can alleviate anxiety,depression,and other adverse emotions,and improve quality of ***,there is a lack of unified and standardized exercise intervention programs for practical application,and patient participation and compliance must be *** combined with resistance exercise can potentially improve the negative psychological status of patients with hematological tumors;however,it is still necessary to further standardize and improve the exercise program improving patient participation and *** studies should strengthen theoretical exploration and empirical research,providing more effective psychological rehabilitation strategies for patients with hematological tumors.

关键词： Hematological tumors Baduanjin Resistance exercise Negative psychological state Psychological rehabilitation

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

Stratigraphic framework and sedimentary evolution during the Cryogenian-Ediacaran transition in northeastern Sichuan Basin,South China

引用

Petroleum Science 2024年第2期21卷 823-835页

作者： Yi zhang Hong-Wei Kuang Yong-Qing liu Qiang Shi Dong-Ge Wang Ke-Ning Qi Yu-Chong Wang Da-Wei Qiao Xiao-Shuai Chen li-Zhi Wu Meng Tian Long Chen Yi Wei liao-Yuan Song Jian li Zi-Gang Wu Yun-Qian liu Xuan-Chun liu An-Qing Chen Zhi-Wei liao Institute of Geology Chinese Academy of Geological SciencesBeijing100037China State Key Laboratory of Coal Mine Disaster Dynamics and Control School of Resources and Safety EngineeringChongqing UniversityChongqing400044China No.205 Geological Team Chongqing Bureau of Geology and Minerals ExplorationChongqing401121China Chongqing Institute of Geological Survey Chongqing401122China Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications of Ministry of natural Resources Chengdu University of TechnologyChengdu610059SichuanChina

The northeastern Sichuan area in the northern Yangtze margin has unique Ediacaran geological records,especially the Doushantuo Formation(DST),and become a hot research area in recent ***,the Cryogenian-Ediacaran(C-E)boundary has not been precisely identified,which restricts the in-depth study of geological information during this crucial transitional period and is unfavorable for a systematic and complete understanding of the Yangtze Block and even the global paleogeographic *** study conducted stratigraphy,sedimentology,and chronostratigraphy to establish the stratigraphic framework and sedimentary evolution of the C-E transition strata in northeastern *** results showed that the Ediacaran sediments,without the cap dolomite,unconformably overlaid the Cryogenian sediments in the studied *** Member II of the DST,characterized by 50-160 m of red-green sandstone(approximately equivalent to the original Chengkou“Guanyinya Formation”),directly overlaid the Cryogenian sediments and displayed a 623±2.3 Ma maximum depositional age from the detrital zircon U-Pb *** stratigraphic correlations indicate that the C-E transition strata in northeastern Sichuan had a consistent lithological association and sedimentary sequence characteristics but differed from the Three ***,the upper nantuo massive glacial diamictites transition to the icebergs rafted lonestone-bearing mudstones at the top,then change upward to DST barrier coast *** proposed DST of the northeastern Sichuan Basin was divided into three lithostratigraphic members without the regional Member I cap dolomite:(i)Member II purple-red,gray-green sandstone strata,(ii)MemberⅢblack mudstone strata,and(iii)Member IV P-Mn bearing *** the C-E transition,the study area experienced(i)the global deglaciation stage in the terminal Marinoan glaciation and(ii)the filling-leveling up stage with clastic rocks in the early ***,the early Ediacaran

关键词： Marinoan glaciation Doushantuo formation Cap dolomite Deglacial and coastal deposits Detrital zircon U-Pb dating

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

经颅直流电刺激在健康个体认知功能增强中的应用研究进展

引用

军事医学 2024年第4期48卷 303-310页

作者：张娜亓丰学北京体育大学竞技体育学院北京100084 北京体育大学运动与脑科学实验室北京100084

认知功能增强是增强大脑某一个或多个核心能力的过程。经颅直流电刺激(tDCS)作为一种非侵入性神经调控技术,具有调节特定脑区皮质兴奋性、突触可塑性以及脑网络功能连通性等特征,可用于改善人类感知觉、工作记忆、注意、运动学习和决策... 详细信息

认知功能增强是增强大脑某一个或多个核心能力的过程。经颅直流电刺激(tDCS)作为一种非侵入性神经调控技术,具有调节特定脑区皮质兴奋性、突触可塑性以及脑网络功能连通性等特征,可用于改善人类感知觉、工作记忆、注意、运动学习和决策等认知功能。该文综述了tDCS作用于大脑皮质调节神经元活动的神经生理机制及单次tDCS在健康人群感知觉、工作记忆、注意、运动学习、决策和语言等认知表现方面的研究进展,为tDCS干预脑皮质增强认知功能提供参考。

关键词：经颅直流电刺激感知觉工作记忆注意运动学习决策语言

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

分子串模型中空间弛豫模式的弛豫动力学的蒙特卡罗模拟

引用

物理学报 2011年第12期60卷 400-405页

作者：樊小辉赵兴宇王丽娜张丽丽周恒为张晋鲁黄以能伊犁师范学院物理科学与技术学院新疆凝聚态相变与微结构实验室伊宁835000 南京大学物理学院固体微结构物理国家重点实验室南京210093 新疆教育学院科研处乌鲁木齐830043

基于玻璃化转变的分子串模型的分子串弛豫方程,提出了更为精确的模拟分子串中所有空间弛豫模式(SRM)的蒙特卡罗模拟方案.模拟得出各个SRM的弛豫时间随温度和分子串长度的变化结果与分子串模型中分子串弛豫方程的预言完全一致,即理论预... 详细信息

基于玻璃化转变的分子串模型的分子串弛豫方程,提出了更为精确的模拟分子串中所有空间弛豫模式(SRM)的蒙特卡罗模拟方案.模拟得出各个SRM的弛豫时间随温度和分子串长度的变化结果与分子串模型中分子串弛豫方程的预言完全一致,即理论预期和模拟结果相互印证.应当指出,分子串能否作为液态中集体单元的必要条件是在考虑到分子串之间的不均匀随机相互作用后,分子串的所有SRM的定性特征是不能改变的,这就需要对不同分子串的SRM之间的耦合进行研究.但是迄今为止,仍未发现相关的严格解,仅有近似的自洽弛豫平均场方法.由此可知,所提出的模拟方案为研究不同分子串的SRM之间的耦合(包括上述自洽场的可行性)提供了必要的基础.

关键词：玻璃化转变弛豫动力学蒙特卡罗模拟分子串

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

The potential mechanism and clinical application value of remote ischemic conditioning in stroke

引用

Neural Regeneration Research 2025年第6期20卷 1613-1627页

作者： Yajun Zhu Xiaoguo li Xingwei Lei liuyang Tang Daochen Wen Bo Zeng Xiaofeng zhang Zichao Huang Zongduo Guo The First Affiliated Hospital of Chongqing Medical University ChongqingChina

Some studies have confirmed the neuroprotective effect of remote ischemic conditioning against stroke. Although numerous animal researches have shown that the neuroprotective effect of remote ischemic conditioning may be related to neuroinflammation, cellular immunity, apoptosis, and autophagy, the exact underlying molecular mechanisms are unclear. This review summarizes the current status of different types of remote ischemic conditioning methods in animal and clinical studies and analyzes their commonalities and differences in neuroprotective mechanisms and signaling pathways. Remote ischemic conditioning has emerged as a potential therapeutic approach for improving stroke-induced brain injury owing to its simplicity, non-invasiveness, safety, and patient tolerability. Different forms of remote ischemic conditioning exhibit distinct intervention patterns, timing, and application range. Mechanistically, remote ischemic conditioning can exert neuroprotective effects by activating the Notch1/phosphatidylinositol 3-kinase/Akt signaling pathway, improving cerebral perfusion, suppressing neuroinflammation, inhibiting cell apoptosis, activating autophagy, and promoting neural regeneration. While remote ischemic conditioning has shown potential in improving stroke outcomes, its full clinical translation has not yet been achieved.

关键词： Akt apoptosis autophagy cerebral perfusion cerebral vascular stenosis clinical transformation hemorrhagic stroke ischemic stroke neuroinflammation neuroprotection Notch1 PI3K remote ischemic conditioning stroke

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

Caspase-1 Cleavage of Aldolase B Impairs Hepatic Fructose Metabolism and Aggravates Chronic Viral Hepatitis

引用

Infectious Microbes & Diseases 2024年第2期6卷 74-84页

作者： Hong Tang Haiming Hu Yanhang Gao Zhilong Wang Feng Yuan Chao zhang Sisi Deng Pingyun Lyu Jingying Zhan Chengkai li Hairong Chen Junqi Niu State Key Laboratory for Diagnosis and Treatment of Infectious Diseases The First Affiliated HospitalZhejiang University School of MedicineHangzhouChina Wuhan Institute of Virology Chinese Academy of SciencesHubeiChina Department of Hepatology The First Hospital of Jilin UniversityChangchunChina Shanghai Institute of Immunity and Infection Chinese Academy of SciencesShanghaiChina Institute of Biophysics Chinese Academy of SciencesBeijingChina

Of dietary monosaccharides,fructose is primarily metabolized by aldolase B(ALDOB)in the liver,whereas glucose is metabolized elsewhere in the *** has been documented that overconsumption of dietary fructose,especially industrial fructose,associates significantly with advanced inflammation in chronic hepatitis C(CHC)***,little is known about whether impaired fructolysis might attribute to CHC *** we found that the level of ALDOB protein was significantly reduced in CHC patients and mice that were persistently infected by hepatitis C virus(HCV).In vitro,HCV infection activated caspase-1,and caspase-3 to a lesser extent,which proteolyzed ALDOB and blocked fructose metabolism in *** of ALDOB attenuated HCV replication,indicating an intrinsic anti-HCV role for homeostatic *** the other hand,reduced ALDOB caused intracellular fructose 1-phosphate accumulation that provoked severe cellular toxicity through intracellular ATP depletion and heightened glycation,which was aggravated by HCV *** together,these results have unveiled that inflammatory activation of caspase-1 impairs homeostatic fructolysis and exacerbates liver damage.

关键词： ALDOB fructose metabolism caspase-1 HCV

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

Germ cell-specific deletion of Pex3 reveals essential roles of PEX3-dependent peroxisomes in spermiogenesis

引用

The Journal of Biomedical Research 2024年第1期38卷 24-36页

作者： Yejin Yao Baolu Shi Xiangzheng zhang Xin Wang Shuangyue li Ying Yao Yueshuai Guo Dingdong Chen Bing Wang Yan Yuan Jiahao Sha Xuejiang Guo State Key Laboratory of Reproductive Medicine and Offspring Health Nanjing Medical UniversityNanjingJiangsu 211166China Reproductive and Genetic Branch the First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui 230001China State Key Laboratory of Reproductive Medicine and Offspring Health Women's Hospital of Nanjing Medical UniversityNanjing Maternity and Child Health Care HospitalNanjing Medical UniversityNanjingJiangsu 211166China.

Peroxisomes are organelles enclosed by a single membrane and are present in various *** abruption of peroxisomes is correlated with peroxisome biogenesis disorders and single peroxisomal enzyme deficiencies that induce diverse diseases in different ***,little is known about the protein compositions and corresponding roles of heterogeneous peroxisomes in various *** transcriptomic and proteomic analyses,we observed heterogenous peroxisomal components among different organs,as well as between testicular somatic cells and different developmental stages of germ *** Pex3 is expressed in both germ cells and Sertoli cells,we generated Pex3 germ cell-and Sertoli cell-specific knockout *** Pex3 deletion in Sertoli cells did not affect spermatogenesis,the deletion in germ cells resulted in male sterility,manifested as the destruction of intercellular bridges between spermatids and the formation of multinucleated giant *** analysis of the Pex3-deleted spermatids revealed defective expressions of peroxisomal proteins and spermiogenesis-related *** findings provide new insights that PEX3-dependent peroxisomes are essential for germ cells undergoing spermiogenesis,but not for Sertoli cells.

关键词： male infertility spermiogenesis peroxisome oxidative stress PEX3

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

水稻土微生物群落、酶活性及理化性质对有机肥、石灰连续施用的响应

引用

植物营养与肥料学报 2024年第1期30卷 63-73页

作者：刘鑫尹泽润盛浩肖华翠张丽娜周萍湖南农业大学资源学院湖南长沙410128 中国科学院亚热带农业生态研究所/亚热带农业生态过程重点实验室湖南长沙410125

【目的】探究水稻土微生物群落、酶活性及理化性质对有机肥、石灰连续施用的响应规律,为培育健康水稻土提供理论依据。【方法】于2014年冬季,选取湘东双季稻区典型酸紫泥田,分别进行了连续施用鸡粪发酵商品有机肥、生石灰的大田试验。... 详细信息

【目的】探究水稻土微生物群落、酶活性及理化性质对有机肥、石灰连续施用的响应规律,为培育健康水稻土提供理论依据。【方法】于2014年冬季,选取湘东双季稻区典型酸紫泥田,分别进行了连续施用鸡粪发酵商品有机肥、生石灰的大田试验。每年早、晚稻翻耕前各撒施一次有机肥、石灰,施用量均为2.25 t/hm^(2),分别以不施有机肥、石灰的处理为对照。在处理后第3年(2017年)和第7年(2021年)晚稻黄熟期,采集表层(0—15 cm)混合土壤样品,测定土壤微生物磷脂脂肪酸(PLFAs)含量、酶活性及理化性质,筛选指示性强、响应敏感的土壤指标。基于土壤理化性质与生物学性质间的相互关系,构建结构方程模型,解析土壤PLFAs含量与酶活性对有机肥、石灰处理的响应机理。【结果】与对照相比,有机肥连施3年后,土壤革兰氏阴性菌(G^(-))PLFAs含量提高23%,革兰氏阳性菌/革兰氏阴性菌值(G^(+)/G^(-))因而降低29%;连施7年后,总PLFAs、细菌、革兰氏阳性菌(G^(+))和放线菌PLFAs含量分别提高16%、13%、28%和38%,腐生真菌PLFAs含量降低19%,而G^(-)菌PLFAs含量、G^(+)/G^(-)均与对照无显著差异。石灰连施3年后,土壤微生物类群PLFAs含量平均降低30%,连施7年后,平均降幅增至36%。有机肥施用3年后,土壤脲酶活性提高了29%;施用7年后,土壤过氧化氢酶、蔗糖酶和脲酶活性分别显著提高了63%、82%和39%。连施石灰3年,脲酶活性显著提高25%,连续施用7年则显著降低39%,对其他酶活性无显著影响。有机肥连施3、7年,土壤通气孔隙度分别增加了14%、33%,有机质总量分别增加了12%、7%,3个活性有机碳组分平均分别提高29%、69%;pH和碱解氮、有效磷、速效钾含量无显著变化;连续施用石灰3、7年,土壤pH分别提高0.6、0.6个单位,而通气孔隙度分别显著降低了47%、28%,总有机质和易氧化有机碳含量无显著变化,细颗粒有机碳含量分别提高了24%、9%,粗颗粒有机碳含量分别提高了100%、21%,施用石灰3年对速效养分含量无显著影响,施用石灰7年土壤碱解氮含量显著降低而有效磷含量显著增加。土壤物理、化学、生物学指标对连续施用有机肥的响应比值以正值为主,对连续施用石灰的响应比值以负值为主,土壤生物、化学指标对连续施用有机肥7年的响应比值较3年趋向更高正值,而对施用石灰趋向更高负值,达到17%~149%。结构方程分析结果表明,连续施用有机肥主要通过增加粗颗粒有机碳含量提升土壤易氧化有机碳,提升微生物总PLFAs含量和脲酶活性,而随着石灰累积用量的增加,降低土壤通气孔隙度、粗颗粒有机碳和碱解氮含量,降低土壤微生物总PLFAs、脲酶活性。【结论】长期连续施用有机肥可持续改善土壤通气性,增加有机质积累,提高土壤物理、化学和生物学性质,短期施用石灰有利于改善土壤物理、化学和生物学性状,但长期连续施用则降低石灰的正向效果。粗颗粒有机碳对土壤生物和化学性状响应有机肥、石灰连续施用的影响最为关键,具有预测土壤健康的潜能。

关键词：酸紫泥田土壤微生物磷脂脂肪酸土壤活性有机碳组分酶活性土壤健康

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

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：