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The Effect of Glycyl-Glutamine Dipeptide Concentration on Enzyme Activity, Cell Proliferation and Apoptosis of Jejunal Tissues from Weaned Piglets

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Agricultural Sciences in China 2011年第7期10卷 1088-1095页

作者： Wang Hui Jia Gang Chen Zheng-li Huang Lan wu cai-mei Wang Kang-ning Institute of Animal Nutrition Sichuan Agricultural University Ya＇an 625014 P.R.China College of Animal Medicine Sichuan Agriculture University Ya＇an 625014 P.R.China

An experiment was conducted in a singly factorial design to study the effect of glycyl-glutamine dipeptide on enzyme activity, cell proliferation and apoptosis of jejunal tissues from weaned piglets at different glycyl-glutamine concentration levels of 2, 4, 10, 20, and 30 mmol L-1, respectively. The glutaminase activity, diamine oxidase （DAO） activity, cell peoliferation, apoptosis, and perotein metabolism were measured by the tissue culture method in vitro using jejunal tissues. The immunohistochemical method was used to study the cell proliferation and apoptosis of jejunal tissues. The results showed that compared to the blank control, the percentage and MOD value of BrdU-positicve cells incubated with glycyl-glutamine dipeptide solution were significantly （P0.05） increased. Accordingly, the percentage and MOD value of caspase-3-positive cells from tissue incubated with glycyl-glutamine dipeptide were notably lower （P0.05） than that from the control treatment. The glycyl-glutamine dipeptide increased the glutaminase activity, DAO activity and protein content of jejunal tissues, as the dipeptide concentration was on the rise （P0.05）. These results indicated that glycyl-glutamine dipeptide affected the jejunum development and adaptation of weaned piglets, and the function might be fulfilled by enhancing the glutamine-related enzyme activity, thereby increasing the consumption of glutamine, and then improving the jejunal cell proliferation and suppressing cell apoptosis. The effects of glycyl-glutamine dipeptide relied in a dose-dependent manner, and the maximum effect was achieved at 20-30 mmol L-1 glycyl-glutamine dipeptide.

关键词： glycyl-glutamine dipeptide cell proliferation apoptosis diamine oxidase glutaminase

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Tissue Deposition and Residue Depletion in Broiler Exposed to Melamine-Contaminated Diets

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Journal of Integrative Agriculture 2012年第1期11卷 109-115页

作者： DING Xue-mei BAI Shi-ping ZHANG Ke-ying WANG Liang wu cai-mei CHEN Dai-wen JIA Gang BAI Jie Institute of Animal Nutrition Key Laboratory for Animal Disease-Resistance Nutrition of ChinaMinistry of EducationSichuan Agricultural UniversityYaan 625014P.R.China

To investigate the tissue deposition and elimination of melamine （MEL） in broilers, a total of 1 920 commercial 1-d-old male Cobb broilers were randomly allotted to 6 treatments with diets contaminated by MEL at 0, 2, 10, 30, 50, 100 mg kg-1 of diet for 42 d, and followed MEL withdrawal from diet at 50 or 100 mg kg-1 of diet for 96 h. The MEL was found in residue of plasma, liver, kidney, breast, and leg muscle with the highest level in kidney and in dose response manner （except in kidney）, but no time response （except in plasma）. The MEL residue in organ tissue was below the safe level of 50 μg mL-1 in blood or 50 μg kg-1 in tissues proposed by the US FSIS when MEL in diet was lower （2 mg kg-1）. The MEL in tissues was eliminated by withdrawal MEL from diets. The elimination half-life of MEL was from 3.2 to 6.6 h, and the clearance time, when MEL residue concentration under limit detection, was from 18.0 to 31.4 h.

关键词： melamine broiler deposition elimination

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变台电量法推算地下水开采量初探

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水文 2006年第6期26卷 65-67页

作者：武美才山西省水文水资源勘测局山西太原030001

为提高地下水资源量计算精度,试验用“变台电量法”来推算地下水开采量。经过分析计算,开采量成果与用水表法、单机流量历时法、亩次法比较,说明用“变台电量法”计算地下水开采量方法确实可行。

关键词：地下水资源量开采量变台电量法

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断面径流与平原地面积水深度的关系研究

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太原理工大学学报 2007年第4期38卷 361-363页

作者：武美才孙明山西省水文水资源勘测局山西太原030001

研究在降雨条件下的地面积水,积水深度的大小对于下垫面的下渗速度影响,确定平原区地面积水与雨强变化的关系。结果表明,地面积水过程分为径流积水和滞留积水,稳定产流阶段的地面积水随雨强呈良好的线性关系;对于雨强一定,不同介质的平... 详细信息

研究在降雨条件下的地面积水,积水深度的大小对于下垫面的下渗速度影响,确定平原区地面积水与雨强变化的关系。结果表明,地面积水过程分为径流积水和滞留积水,稳定产流阶段的地面积水随雨强呈良好的线性关系;对于雨强一定,不同介质的平原区,地面积水与历时呈直线或曲线关系。对山西省水文计算和水资源评价工作具有重要的现实意义。

关键词：断面径流量径流积水深度滞留积水深度

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有限空间的无限言说——清真寺之现象学诠释

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西北民族研究 2006年第2期 72-75,139页

作者：吴彩梅马俊峰西北民族大学社会人类学·民俗学学院兰州730030 西北师范大学政法学院讲师南开大学哲学系博士生兰州730071

本文主要通过对伊斯兰教的宗教与社会活动场所——清真寺之现象学诠释，展现出清真寺的独特的内在特质，并进一步揭示：它已成为穆斯林们生存的见证，从而构筑出有限空间的无限言说的生命体验方式，为持守住人之为人的理念，建构人道主... 详细信息

本文主要通过对伊斯兰教的宗教与社会活动场所——清真寺之现象学诠释，展现出清真寺的独特的内在特质，并进一步揭示：它已成为穆斯林们生存的见证，从而构筑出有限空间的无限言说的生命体验方式，为持守住人之为人的理念，建构人道主义提供了更有价值的思想资源。

关键词：清真寺穆斯林存在空间言说

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马克思与人的自由解放

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西北民族大学学报（哲学社会科学版） 2006年第3期 6-10页

作者：吴彩梅马俊峰西北民族大学社会人类学.民俗学学院甘肃兰州730030 西北师范大学政法学院甘肃兰州730000

人的自由和解放问题对人类而言,是至关重要的。因此,重新梳理西方哲学史,重新审视关于人的解放问题,我们可以看出,在马克思之前,由于许多哲学家对人性、自由的理解片面和抽象,因而,决定着他们不能够提出合理、科学的人的解放理论。之后... 详细信息

人的自由和解放问题对人类而言,是至关重要的。因此,重新梳理西方哲学史,重新审视关于人的解放问题,我们可以看出,在马克思之前,由于许多哲学家对人性、自由的理解片面和抽象,因而,决定着他们不能够提出合理、科学的人的解放理论。之后,马克思对于人的问题进行了合理的、科学的解释,最终对人的自由解放做出了科学回答,从而马克思的人的自由和解放理论对于解决人的解放问题提供了理论依据。

关键词：马克思与人自由解放理论探索

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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang wu Linke cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Oxygen evolution reaction

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腐乳中存在的安全隐患

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食品研究与开发 2009年第4期30卷 156-160页

作者：孙伟伟王静吴彩梅滨州学院山东滨州256600 中国农业科学院农业质量标准与检测技术研究所北京100081 四川农业大学动物营养研究所四川雅安625014

综述腐乳在其生产原料、微生物污染、菌种、红曲辅料、生产用水、食用期间等方面存在的安全隐患;对发酵食品的工业用菌可能造成的安全问题、红曲辅料中桔霉素残留及腐乳中红曲霉产桔霉素等安全性问题进行具体阐述,为腐乳的安全性研究提... 详细信息

综述腐乳在其生产原料、微生物污染、菌种、红曲辅料、生产用水、食用期间等方面存在的安全隐患;对发酵食品的工业用菌可能造成的安全问题、红曲辅料中桔霉素残留及腐乳中红曲霉产桔霉素等安全性问题进行具体阐述,为腐乳的安全性研究提供理论依据和实践基础。

关键词：腐乳菌种微生物污染红曲霉安全隐患

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Brain region-specific roles of brain-derived neurotrophic factor in social stress-induced depressive-like behavior

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Neural Regeneration Research 2025年第1期20卷 159-173页

作者： Man Han Deyang Zeng Wei Tan Xingxing Chen Shuyuan Bai Qiong wu Yushan Chen Zhen Wei Yufei mei Yan Zeng Brain Science and Advanced Technology Institute Wuhan University of Science and TechnologyWuhanHubei ProvinceChina Geriatric Hospital Affiliated to wuhan University of Science and Technology WuhanHubei ProvinceChina School of Public Health Wuhan University of Science and TechnologyWuhanHubei ProvinceChina

Brain-derived neurotrophic factor is a key factor in stress adaptation and avoidance of a social stress behavioral *** studies have shown that brain-derived neurotrophic factor expression in stressed mice is brain region–specific,particularly involving the corticolimbic system,including the ventral tegmental area,nucleus accumbens,prefrontal cortex,amygdala,and *** how brain-derived neurotrophic factor participates in stress processing in different brain regions will deepen our understanding of social stress *** this review,we discuss the expression and regulation of brain-derived neurotrophic factor in stress-sensitive brain regions closely related to the pathophysiology of *** focused on associated molecular pathways and neural circuits,with special attention to the brain-derived neurotrophic factor–tropomyosin receptor kinase B signaling pathway and the ventral tegmental area–nucleus accumbens dopamine *** determined that stress-induced alterations in brain-derived neurotrophic factor levels are likely related to the nature,severity,and duration of stress,especially in the above-mentioned brain regions of the corticolimbic ***,BDNF might be a biological indicator regulating stress-related processes in various brain regions.

关键词： amygdala chronic mild stress chronic social defeat stress corticolimbic system depression hippocampus medial prefrontal cortex nucleus accumbens social stress models ventral tegmental area

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Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan wu Zhiqin Ruan Yue‑Peng cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

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