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8-ranks of Class Groups of Some Imaginary Quadratic Number Fields

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Acta Mathematica Sinica,English Series 2007年第11期23卷 2061-2068页

作者： xi mei WU Department of Mathematics Nanjing University of Aeronautics and AstronauticsNanjing 210016 P. R. China State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100039 P. R. China

Let F = Q（√-p1p2） be an imaginary quadratic field with distinct primes p1 = p2 = 1 mod 8 and the Legendre symbol （p1/p2） = 1. Then the 8-rank of the class group of F is equal to 2 if and only Pl if the following conditions hold：（1） The quartic residue symbols （p1/p2）4 = （p2/p1）4 = 1; （2） Either both p1 and p2 are represented by the form a^2 ＋ 32b^2 over Z and p^h2＋（2p1）/4=x^2-2p1y^2,x,y∈Z,or both p1 and p2 are not represented by the form a^2 ＋ 32b^2 over Z and p^h2＋（2p1）/4=ε（2x^2-p1y^2）,x,y∈Z,ε∈{±1},where h＋（2p1） is the narrow class number of Q（√2p1）,Moreover, we also generalize these results.

关键词： class group Rédei matrix reciprocity law

NONISOTHERMAL CRYSTALLIZATION AND MORPHOLOGY OF POLY(BUTYLENE SUCCINATE)/LAYERED DOUBLE HYDROxiDE NANOCOMPOSITES

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Chinese Journal of Polymer Science 2013年第1期31卷 187-200页

作者： mei-qiu Zhan Guang-yi Chen 魏志勇 Yu-mei Shi Wan-xi zhang School of Material Science and Engineering Jilin University School of Automotive Engineering Dalian University of Technology

Biodegradable poly（butylene succinate）（PBS） and layered double hydroxide （LDH） nanocomposites were prepared via melt blending in a twin-screw extruder. The morphology and dispersion of LDH nanoparticles within PBS matrix were characterized by transmission electron microscopy （TEM）, which showed that LDH nanoparticles were found to be well distributed at the nanometer level. The nonisothermal crystallization behavior of nanocomposites was extensively studied using differential scanning calorimetry （DSC） technique at various cooling rates. The crystallization rate of PBS was accelerated by the addition of LDH due to its heterogeneous nucleation effect; however, the crystallization mechanism and crystal structure of PBS remained almost unchanged. In kinetics analysis of nonisothermal crystallization, the Ozawa approach failed to describe the crystallization behavior of PBS/LDH nanocomposites, whereas both the modified Avrami model and the Mo method well represented the crystallization behavior of nanocomposites. The effective activation energy was estimated as a function of the relative degree of crystallinity using the isoeonversional analysis. The subsequent melting behavior of PBS and PBS/LDH nanocomposites was observed to be dependent on the cooling rate. The POM showed that the small and less perfect crystals were formed in nanocomposites.

关键词： Poly(butylene succinate) Layered double hydroxide Nonisothermal crystallization.

昆明市18岁以上居民人体成分及超重肥胖特征分析

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中国公共卫生管理 2020年第6期36卷 919-921页

作者：范蜀滨范蜀琦张习梅杨露昆明市第一人民医院甘美医院云南昆明650000 昆明市口腔医院北京东华原医疗设备有限责任公司

目的了解昆明市成人不同年龄段人体成分基本特征和超重、肥胖现状,为早期的慢性病预防与控制提供参考。方法随机筛选4 752名2018年11月-2020年2月在某健康管理中心健康体检者的人体成分数据,采用质量指数将体检者分为偏瘦、正常、超重... 详细信息

目的了解昆明市成人不同年龄段人体成分基本特征和超重、肥胖现状,为早期的慢性病预防与控制提供参考。方法随机筛选4 752名2018年11月-2020年2月在某健康管理中心健康体检者的人体成分数据,采用质量指数将体检者分为偏瘦、正常、超重、肥胖4组,对人体成分特征进行分析。结果昆明市成年居民超重率为34.55%,肥胖率为12.10%。其中男性超重率23.17%,肥胖率9.11%;女性超重率11.38%,肥胖率2.99%,差异均有统计学意义(P<0.05)。男性与女性体成分差异有统计学意义(P<0.05)。在各年龄段内,体内总水分、蛋白质、无机盐、去脂体重、体脂率差异均有统计学意义(P<0.05)。结论昆明市不同性别、年龄居民人体成分差异明显,且随营养状况、年龄、性别而改变,研究为居民成人早期的慢病预防与控制提供了参考依据。

关键词：超重肥胖人体成分去脂体重体脂率营养状况

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运维人员行为合规联动预警系统

应用能源技术 2019年第12期 11-12页

作者：张喜梅王保根常轶王子琪国网新源控股有限公司检修分公司

由于部分运维人员不能按时到岗和操作管理不规范,导致了各种违章情况频频发生。建立一套运维人员行为合规联动预警系统迫在眉睫。该系统是基于企业内部局域网的一管控平台,能够对非法入侵、账号盗用、非法连接有效地抑制。人脸识别技术... 详细信息

由于部分运维人员不能按时到岗和操作管理不规范,导致了各种违章情况频频发生。建立一套运维人员行为合规联动预警系统迫在眉睫。该系统是基于企业内部局域网的一管控平台,能够对非法入侵、账号盗用、非法连接有效地抑制。人脸识别技术不给非法入侵人员可乘之机,并且具有记录日志功能,可以规范运维人员的在岗时间。通过运维人员行为合规联动预警系统的建立可以更加精细地管控、规范运维人员。

关键词：运维人员在岗时间预警系统

Recent progress in metal-organic frameworks(Part II—material application)

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Science China Chemistry 2025年

作者： Jiandong Pang Wentao Jiang Xue-Wen zhang Hao-Long Zhou Yuxiu Sun Wei Gong Bin Wang Fuyin Ma Linwei He Long Chen Qiang Chen He-Qi Zheng Yuanjing Cui Wen-Jie Shi Chao zhang mei Wang Yue-Biao zhang Jie-Peng zhang Chongli Zhong Yong Cui Shuao Wang Jian-Rong Li Guodong Qian Tong-Bu Lu Huan Pang xian-He Bu Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology School of Chemistry and Chemical Engineering Yangzhou University School of Materials Science and Engineering Nankai University School of Physical Science and Technology ShanghaiTech University MOE Key Laboratory of Bioinorganic and Synthetic Chemistry GBRCE for Functional Molecular Engineering School of Chemistry IGCMESun Yat-sen University Department of Chemistry Shantou University School of Chemical Engineering and Technology Tiangong University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences Soochow University College of Materials Science & Engineering Beijing University of Technology State Key Laboratory of Silicon and Advanced Semiconductor Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science & Engineering Zhejiang University

As a class of functional crystalline porous materials, metal-organic frameworks(MOFs) gained rapid development in the past three decades and a large number of MOFs with ordered structures, high surface areas, and functionalized channels have been investigated. MOFs and MOF-derived/composite materials show great potential in many application fields. In this review, we discussed the main applications of MOFs and MOF-derived/composite materials in small molecule storage, separation, luminescence, sensing, multitype catalysis, and energy storage. In addition, challenges and problems in the future research of MOFsrelated fields are also discussed.

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Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

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Traditional Medicine Research 2025年第1期10卷 27-43页

作者： Shi-Bo Feng Hai-Hui Jiang Hui-Li Kang Yi Jiang Hua-Wei zhang xiao-mei Song Yu-Ze Li Wen-Li Huang Dong-Dong zhang Chong Deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

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NP共掺杂的多孔碳材料在氧还原方面的应用

聊城大学学报（自然科学版） 2019年第2期32卷 80-84页

作者：袁雪丁硕徐大为刘雪美张美茜刘建华戴昉纳中国石油大学(华东)理学院山东青岛266580

可持续清洁能源的发展对缓解能源和环境危机有着不可或缺的作用,燃料电池具有可循环性、产物清洁等优点,其中氢氧燃料电池有很大的发展前景,而寻找非贵重催化剂替代Pt基催化剂成为研究氢氧燃料电池阴极(ORR)氧还原反应的研究重点之一.... 详细信息

可持续清洁能源的发展对缓解能源和环境危机有着不可或缺的作用,燃料电池具有可循环性、产物清洁等优点,其中氢氧燃料电池有很大的发展前景,而寻找非贵重催化剂替代Pt基催化剂成为研究氢氧燃料电池阴极(ORR)氧还原反应的研究重点之一.本课题选择廉价易得的工业废料-木屑作为框架材料,通过N和P双掺杂的方法,对其表面进行后修饰.利用其协同效应,得到具有良好ORR活性的多孔碳材料,并利用电化学工作站对其进行ORR性能测试,结果表明calZIF-wood-24h具有较高ORR活性和较好的稳定性,而且其较低的成本为广泛的实际应用提供了可能.

关键词：氧还原电催化多孔碳材料双掺杂的协同效应

FAS-670 A>G基因多态性与宫颈癌发病风险的meta分析

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宜春学院学报 2018年第9期40卷 56-62页

作者：杨云李松柏张细梅廖兵荣张映宜春学院医学院宜春学院预防医学研究所江西宜春336000 江西省人民医院肾内科南昌330006 慈溪市坎墩医院浙江慈溪315303

目的:探讨FAS-670 A> G基因多态性与宫颈癌发病风险的关联。方法:于Pubmed、知网等数据库中全面检索相关文献,收集2016年12月前公开发表的相关文献,使用Stata12. 0进行meta分析。结果:经过严格标准筛选,最终纳入本次meta分析的研究共13... 详细信息

目的:探讨FAS-670 A> G基因多态性与宫颈癌发病风险的关联。方法:于Pubmed、知网等数据库中全面检索相关文献,收集2016年12月前公开发表的相关文献,使用Stata12. 0进行meta分析。结果:经过严格标准筛选,最终纳入本次meta分析的研究共13项,累计病例3146例,对照3070例。共记录4种模式:纯合子(GG vs AA);显性模式(AG+GG vs AA);隐性模式(GG vs AA+AG);等位基因(G vs A)。在各模式中,meta分析的OR值及95%置信区间分别为1. 00 (0. 78-1. 28); 1. 05 (0. 84-1. 32); 1. 02 (0. 84-1. 25); 1. 02(0. 91-1. 15),且按种族进行亚组分析中各OR值均无统计学意义。结论:FAS-670 A> G基因多态性与宫颈癌发病风险之间无显著性关联。

关键词： FAS 宫颈癌基因多态性 meta分析

调脂护肝方干预高脂饲养大鼠脂肪肝的实验研究

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中华中医药学刊 2008年第8期26卷 1707-1710页

作者：张美稀陈圣高郑文君黄智铭平阳县中医院浙江平阳325401 温州医学院附属第一医院消化内科浙江温州325000

目的:观察调脂护肝方对高脂饲食脂肪肝大鼠的干预效应,探讨其药效学机制。方法:将雄性SD大鼠64只正常喂养1周后,随机分为正常组12只,饲基础饲料,实验组52只,给予高脂饲料饲食(含胆固醇2%,猪油10%,基础饲料88%),13周末随机抽取正常组2只... 详细信息

目的:观察调脂护肝方对高脂饲食脂肪肝大鼠的干预效应,探讨其药效学机制。方法:将雄性SD大鼠64只正常喂养1周后,随机分为正常组12只,饲基础饲料,实验组52只,给予高脂饲料饲食(含胆固醇2%,猪油10%,基础饲料88%),13周末随机抽取正常组2只,高脂饲养大鼠8只,验证高脂饲养大鼠脂肪肝形成。剩余实验组44只随机分为4组即病理模型组、东宝甘泰组、羊栖菜组、调脂护肝方组,每组均为11只,在继续饲高脂饲料外,分别给予东宝甘泰,按0.5g/(kg.d)(用蒸馏水配成0.05g/mL的混悬液),羊栖菜煎剂按10mL/(kg.d)(10mL含羊栖菜生药20g),调脂护肝方按10mL/(kg.d)(由羊栖菜、丹参、制大黄、葛根、泽泻、茯苓=3∶2∶1∶1∶1∶1其中10mL含羊栖菜20g),共8周。第21周末称重,处死动物,取肝脏,计算肝脂数(肝重/体重×100%)观察肝脏组织的病理学变化,抽血,并检测以下指标:血清总胆固醇(TC)、甘油三酯(TG)、血清丙氨酸转氨酶(ALT)、天门冬氨酸转氨酶(AST)、血清超氧化物歧化酶(SOD)、丙二醛(MDA)、空腹血糖(FBG)、空腹胰岛素(FINS)并计算胰岛素抵抗指数(HOMA-IR)、肝TG含量。结果:①与病理模型组、东宝甘泰组比较羊栖菜组与调脂护肝方组大鼠体重及肝指数均较低(二者均为P<0.01)。②与病理模型组、东宝甘泰组、羊栖菜组比较,调脂护肝方组血清TC值较低(P<0.01)。③与病理模型组、东宝甘泰组比较,羊栖菜组、调脂护肝方组血清、肝脏TG均降低(P<0.01)④与正常组、病理模型组、东宝甘泰组、羊栖菜组比较,调脂护肝方组HLD-C增高(P<0.01)。⑤与病理模型组、东宝甘泰组、羊栖菜组比较调脂护肝方组、正常组血清ALT、AST值均较低(P<0.01)。⑥与病理模型组、东宝甘泰组、羊栖菜组比较,调脂护肝方组MDA值较低(P<0.01),SOD值较高(P<0.01)。⑦与病理模型组、东宝甘泰组比较,调脂护肝方组HOMA-R I值减低(P<0.01)。⑧与病理模型组、东宝甘泰组比较,调脂护肝方肝脂变率较低(P<0.05),肝组织炎症活动度也较低(P<0.01)。结论:调脂护肝方治疗非酒精性脂肪肝的药效机制为:①降低体重与肝指数。②调整脂质代谢:降低血清和肝脏甘油三酯、总胆固醇。③改善肝功能:降低ALT、AST。④抗脂质过氧化,提高抗氧化酶活性。⑤改善胰岛素抵抗。⑥减轻肝脂肪变性与肝组织炎症。

关键词：非酒精性脂肪性肝病大鼠中草药海藻(羊栖菜) 调脂护肝方