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Action Mechanism Research of Lanthanons to Slow Vacuolar Ion Channels in Raphanus Satirus L.(Xinlimei) Radish by Patch-Clamp

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Chinese Chemical Letters 2001年第9期12卷 813-814页

作者： Pin YANG Yan fang shang Zhen Ming PEI Institute of Molecular Science Shanxi UniversityTaiyuan 030006 Department of Biology Duke UniversityDurhamNC 27708

We used whole-vacuolar patch-clamp recording mode to study the action mechanism of La3+ to Slow Vacuolar (SV) channels for the first time. We recorded SV channel currents of Xinlimei (Raphanus satirus L.) vacuolars. The minimum activation potentials of voltage-dependent SV channels tied in 25+/-5 mV. The increase in cytoplasmic Ca2+ led to enhancement of SV-type currents. It was found that the threshold potential of activation shifted towards more depolarized values whenever cytoplasmic Ca2+ was increased. When 10(-10) mol/L free La3+ was added to the bath, SV-type current was suppressed by 60 similar to 75%. These data showed La3+ reduced ion permeabilities of Xinlimei root vacuolar membrane.

关键词： Whole-vacuolar recording SV-type current cytoplasmic Ca2+ La3+ Patch-Clamp

The heating of the solar transition region

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Research in Astronomy and Astrophysics 2010年第6期10卷 529-532页

作者： Wen-Bin Song Xue-shang Feng fang Shen SIGMA Weather Group State Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190 China

The temperature curve in the solar chromosphere has puzzled astronomers for a long time. Referring to the structure of supergranular cells, we propose an inductive heating model. It mainly includes the following three steps. （1） A small-scale dynamo exists in the supergranulation and produces alternating small-scale magnetic fluxes; （2） The supergranular flow distributes these small-scale fluxes according to a regular pattern; （3） A skin effect occurs in the alternating and regularly-distributed magnetic fields. The induced current is concentrated near the transition region and heats it by resistive dissipation.

关键词： Sun transition region -- Sun granulation

不同苜蓿品种叶片特征、光合生理特性与产量性状的比较

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草地学报 2024年第2期32卷 369-377页

作者：景芳师尚礼南攀马瑞宏阿芸陆保福关键张辉辉甘肃农业大学草业学院/草业生态系统教育部重点实验室/中-美草地畜牧业可持续发展研究中心甘肃兰州730070

以国内外引进的8个紫花苜蓿(Medicago sativa L.)品种为试验材料,对比研究不同品种的叶片特征、产量性状和光合生理特性,采用相关性分析和通径分析法,探讨其与产量的关联性,以期为高产紫花苜蓿种质的筛选提供依据。结果表明:供试紫花苜... 详细信息

以国内外引进的8个紫花苜蓿(Medicago sativa L.)品种为试验材料,对比研究不同品种的叶片特征、产量性状和光合生理特性,采用相关性分析和通径分析法,探讨其与产量的关联性,以期为高产紫花苜蓿种质的筛选提供依据。结果表明:供试紫花苜蓿品种单株干重的变幅为0.88~1.21 g;各性状与单株干重的相关性按大小排序依次为:单株叶干重>比叶重>蒸腾速率>单株叶片数>叶形指数,单株叶干重是最突出的叶片特征指标。对单株干重的影响程度从大到小依次为:比叶重>气孔导度>可溶性蛋白>株高>蔗糖>可溶性糖>叶绿素总量,其中,比叶重是单株干重的主要决定因子。综上,高产紫花苜蓿种质筛选的重要指标包括:单株叶干重和比叶重,8个紫花苜蓿品种中‘甘农9号’、‘WL319HQ’和‘SG501’的单株干重、单株叶干重和比叶重均较大,可作为高产种质在育种工作中加以研究利用。

关键词：紫花苜蓿叶片特征光合生理高产种质

Development of a 1200 fine group nuclear data library for advanced nuclear systems

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Nuclear Science and Techniques 2017年第5期28卷 48-52页

作者： Jun Zou Lei-Ming shang fang Wang Li-Juan Hao Key Laboratory of Neutronics and Radiation Safety Institute of Nuclear Energy Safety Technology Chinese Academy of Sciences Hefei 230031 China

Accurate and reliable nuclear data libraries are essential for calculation and design of advanced nuclea systems. A 1200 fine group nuclear data library Hybrid Evaluated Nuclear Data Library/Fine Group(HENDL/FG with neutrons of up to 150 Me V has been developed to improve the accuracy of neutronics calculations and anal ysis. Corrections of Doppler, resonance self-shielding, and thermal upscatter effects were done for HENDL/FG Shielding and critical safety benchmarks were performed to test the accuracy and reliability of the library. The dis crepancy between calculated and measured nuclea parameters fell into a reasonable range.

关键词： Advanced nuclear system Fine group nuclear data library Effective multiplication factor

Natural variations in flavonoids and triterpenoids of Cyclocarya paliurus leaves

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Journal of Forestry Research 2021年第2期32卷 805-814页

作者： Caowen Sun Xulan shang Haifen Ding Yanni Cao Shengzuo fang College of Forestry Nanjing Forestry UniversityNanjing 210037People’s Republic of China Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037People’s Republic of China

Cyclocarya paliurus is widely distributed in subtropical areas of *** metabolites in the leaves,including flavonoids and triterpenoids,provide protection against diseases such as hyperlipidemia,diabetes,hypertension,and *** this study,343 *** leaves were collected from 32 distinct populations covering most of the main distribution,to deduce the response of flavonoids and triterpenoids to seven environmental *** component analysis was performed using seven flavonoid and six triterpenoid *** results show that altitude,latitude,and longitude significantly contributed to variations in total flavonoid and triterpenoid *** addition,the interaction of these metabolites was extensively correlated with environment changes,and therefore should be considered during selection and cultivation.

关键词： Cyclocarya paliurus Environmental factors Flavonoids Secondary metabolite variation Triterpenoids

“一带一路”倡议下农学双语人才培养模式的探索与实践

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教育教学论坛 2024年第14期 101-104页

作者：郭琳商庆银方圣江西农业大学农学院江西南昌330045

“一带一路”倡议的提出对农业院校人才培养提出了新的要求。在农学课堂开展双语教学,培养具有国际视野、熟悉国际规则、具有国际竞争力的新型高素质人才是当前农业类高校人才培养的主要目标。通过分析“一带一路”倡议下农学双语人才... 详细信息

“一带一路”倡议的提出对农业院校人才培养提出了新的要求。在农学课堂开展双语教学,培养具有国际视野、熟悉国际规则、具有国际竞争力的新型高素质人才是当前农业类高校人才培养的主要目标。通过分析“一带一路”倡议下农学双语人才培养的机遇、挑战及存在的问题,从教学方法、教学内容与课程考核机制的优化、教材编写和师资力量的提升三方面进行了改革与实践。以江西农业大学“惟义”农学实验班为示范,通过建立农学类专业双语课程体系,形成农林人才国际化培养新机制,提升学生的跨学科视野、跨文化交际及外语运用能力,夯实专业知识,加快“一带一路”背景下农学专业的国际化进程。

关键词： “一带一路”倡议农学双语人才培养

Geometry and Maximum Width of a Stable Slope Considering the Arching Effect

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Journal of Earth Science 2020年第6期31卷 1087-1096页

作者： Kun fang Huiming Tang Xuexue Su Wentao shang Shenglong Jia Faculty of Engineering China University of GeosciencesWuhan 430074China School of Civil Engineering Shandong Jianzhu UniversityJinan 250101China Faculty of Engineering University of AlbertaEdmonton ABT6G2R3Canada

The stability of an arching slope in deformable materials above strong rocks strongly depends on the shape and width of the *** for a free surface problem that incorporate these two parameters were derived using a simplified two-dimensional arching slope model,and were validated using physical model tests under 1 g and centrifugal *** results are used to estimate the maximum excavation width for a weak claystone slope in a lignite mine,for which we calculate a safety factor of 1.31.

关键词： slope failure geological engineering cracked soil slope large-scale model test deformation mechanism arching slope

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紫花苜蓿雄性不育系高产杂交组合筛选研究

饲料研究 2024年第16期47卷 131-136页

作者：曾燕霞尚继红吴娟沙晓弟张尚沛朱新忠包明芳陈彩锦宁夏农林科学院固原分院宁夏固原756000

试验旨在筛选紫花苜蓿雄性不育系高产杂交组合,以引进的1个苜蓿雄性不育系株系(MS-GN)为母本,10个优良紫花苜蓿单株(紫花苜蓿354-05、骑士-02、甘农8号-04、紫花苜蓿440-02、皇后-25、紫花苜蓿319-01、陇东苜蓿-06、紫花苜蓿343-02、阿... 详细信息

试验旨在筛选紫花苜蓿雄性不育系高产杂交组合,以引进的1个苜蓿雄性不育系株系(MS-GN)为母本,10个优良紫花苜蓿单株(紫花苜蓿354-05、骑士-02、甘农8号-04、紫花苜蓿440-02、皇后-25、紫花苜蓿319-01、陇东苜蓿-06、紫花苜蓿343-02、阿尔冈金-19、三得利-74)为父本,共配制10个杂交组合,编号分别为M×1、M×2、M×3、M×4、M×5、M×6、M×7、M×8、M×9、M×10。通过测定杂交组合F1代连续两年的株高、茎粗、一级分枝数和鲜、干草产量等指标,结合一般配合力分析,筛选高产杂交组合。结果显示,M×4的两年平均株高最高,显著高于M×7、M×3、M×5、M×8和M×10(P<0.05);M×6的两年平均茎粗最粗,M×1的两年平均一级分枝数最多。M×1和M×6的两年平均鲜草产量最高,均为2.02 kg/株,M×4和M×1的两年平均干草产量最高,均为0.60 kg/株。株高、茎粗和一级分枝数均与草产量呈正相关,且株高和一级分枝数与鲜、干草产量呈显著或极显著正相关(P<0.05或P<0.01)。产量性状聚类分析将杂交组合分为4类,其中产量性状表现较优的组合为M×1、M×6和M×4,与灰色关联度综合分析结果一致。一般配合力(GCA)效应值中,M×4株高最高,M×6茎粗最高,M×1一级分枝数最高,M×1和M×6鲜草产量最高,M×1和M×4干草产量最高。研究表明,各杂交组合中,M×1、M×4和M×6的产量性状综合表现较优,为高产杂交组合。

关键词：紫花苜蓿雄性不育系产量聚类分析灰色关联度分析一般配合力

镇肝熄风汤对自发性高血压大鼠胆汁酸谱及甾醇12α羟化酶的影响

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中国临床药理学杂志 2024年第15期40卷 2212-2216页

作者：凌必时金华祁尚文刘双芳刘志军甘肃中医药大学中医临床学院甘肃兰州730000 甘肃中医药大学附属医院神经内科甘肃兰州730000

目的观察镇肝熄风汤对自发性高血压大鼠(SHR)胆汁酸谱及甾醇12α羟化酶(CYP8B1)的影响。方法将50只SHR随机分为模型组、对照组(灌胃1.0 mg·kg^(-1)·d^(-1)贝那普利)和低、中、高剂量实验组(灌胃镇肝熄风汤8.63、17.25、34.50 g·kg^(... 详细信息

目的观察镇肝熄风汤对自发性高血压大鼠(SHR)胆汁酸谱及甾醇12α羟化酶(CYP8B1)的影响。方法将50只SHR随机分为模型组、对照组(灌胃1.0 mg·kg^(-1)·d^(-1)贝那普利)和低、中、高剂量实验组(灌胃镇肝熄风汤8.63、17.25、34.50 g·kg^(-1)·d^(-1));另取10只同源雄性京都Wistar大鼠作为正常组。模型组和正常组均灌胃给予等量蒸馏水。6组大鼠每天给药1次,连续给药8周。用动物无创血压计以尾套法测量各组大鼠血压,用UPLC-MS/MS法检测各组大鼠胆汁酸谱,用实时荧光定量聚合酶链反应法检测大鼠肝组织中CYP8B1 mRNA的表达情况。结果中、高剂量实验组和对照组、模型组、正常组的第8周收缩压分别为(169.63±12.10)、(170.32±9.64)、(175.95±15.47)、(189.47±7.42)和(146.40±9.45)mmHg,第8周舒张压分别为(135.10±11.99)、(129.73±15.10)、(135.18±17.62)、(149.20±8.83)和(110.53±10.92)mmHg,CYP8B1 mRNA相对表达水平分别为3.36±0.94、5.45±1.46、4.29±0.95、0.89±0.14和1.00±0.00。中、高剂量实验组的上述指标与模型组比较,在统计学上差异均有统计学意义(P<0.01,P<0.05)。低、中、高剂量实验组与模型组比较,胆汁酸谱改变明显,共发现9种差异胆汁酸,分别为猪去氧胆酸、甘氨猪去氧胆酸、甘氨鹅去氧胆酸、甘氨熊去氧胆酸、α-鼠胆酸、熊去氧胆酸、胆酸、β-鼠胆酸、甘氨胆酸。结论镇肝熄风汤可能通过上调肝CYP8B1表达,纠正胆汁酸谱紊乱,从而达到降低血压的目的。

关键词：镇肝熄风汤高血压胆汁酸谱胆汁甾醇12α羟化酶