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Synthesis and Conformational Properties of Bis(calix[4]arene)

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Chinese Chemical Letters 2002年第6期13卷 525-527页

作者： qi yu zheng Chuan Feng CHEN Zhi Tang HUANG Center for Molecular Science Institute of ChemistryChinese Academy of Sciences Beijing 100080

The bis(calix[4]arene) 3 was synthesized in moderate yield by the reaction of p-tert-butylcalix[4]arene (1) with 1,4-bis(chloromethyl)benzene (2). The conformation of all alkylated product 4 was investigated by the v... 详细信息

关键词： Bis(calixarene) conformation receptor.

A New Chromogenic Diester-calix[4]crown Receptor for Ca^(2+)

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Chinese Chemical Letters 1998年第11期9卷 993-996页

作者： Chuan Feng CHEN qi yu zheng Zhi Tang HUANG (Institute of Chemistry, Chinese Academy of Sciences, Beijing,100080) Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

A diester-calix[4]crown-4-ether bearing mono (azophenol) moiety shows a larger spectral change toward Ca2+ than other alkali and alkaline eafth cations.

关键词： Chromogenic receptor diester-calixcrown-4-ether, Ca^(2+)-selective.

Synthesis of Macrocyclic Lactones Building on Double Calix[4]arenes

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Chinese Chemical Letters 2000年第5期11卷 403-404页

作者： qi yu zheng Chuan Feng CHEN Zhi Tang HUANG (Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080) Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

The macrocyclic lactones building on calix[4]arenes 3a-b and double calix[4]arenes 4a-b were synthesized by the reaction of p-tert-butylcalix[4]arene (1a) or calix[4]arene (1b) with glycol bis(2-chloroacetate) (2). Th... 详细信息

关键词： macrocyclic lactones double calixarenes synthesis

Association of serum uric acid with thyroid function in health check-up participants

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Chinese Medical Journal 2020年第12期133卷 1409-1414页

作者： Xiao-Jun Wang Xi-Wen qian Xu Zhang Li Han yu-qi zheng Tao Wu Guo-You qin Zhi-Bin Ye Jing Xiao Department of Traditional Chinese Medicine Huadong Hospital Affiliated to Fudan UniversityShanghai 200040China Shanghai Key Laboratory of Clinical Geriatric Medicine Huadong Hospital Affiliated to Fudan UniversityShanghai 200040China Department of Biostatistics School of Public HealthFudan UniversityShanghai 200433China Department of Nephrology Huadong Hospital Affiliated to Fudan UniversityShanghai 200040China

Background:The relationship of uric acid(UA)with the thyroid function among healthy individuals remains *** aimed to examine the relationship between UA contents and thyroid hormone levels in healthy Chinese ***:This was a cross-sectional study of 1186 Chinese adults(736 men and 450 women)who underwent a health check-up at the Huadong Hospital Affiliated to Fudan University(Shanghai,China)between January 1,2010 and July 31,*** and thyroid hormone levels were compared in different UA groups(in male and menopause women groups,MG1:UA<5 mg/dL;MG2:5 mg/dLUA<7 mg/dL;and MG3:UA≥7 mg/dL;in female groups,FG1 to FG3 represent the UA levels of<4 mg/dL,4 mg/dLUA<6 mg/dL,and≥6 mg/dL,respectively).In addition,natural cubic spline regression,together with Pearson correlation analysis,was performed in investigating the correlation of UA with thyroid ***:After adjusting for confounding factors,low levels of UA(for males,UA<5.30 mg/dL;for females,UA<4.05 mg/dL)were negatively correlated with free triiodothyronine(FT3)both in men and *** levels between 4.83 and 6.06 mg/dL may act to protect FT3 in women,while UA levels between 6.39 and 7.09 mg/dL may protect FT3 in ***3 levels of low-range UA group reduced compared with mid-range UA and the high-range UA groups in both men and ***:Our results provide epidemiologic evidence to support the negative correlation between low UA contents and FT3 in the Chinese Han population,suggesting that the reduced UA contents may serve as the risk factor to predict poor thyroid function in Chinese individuals.

关键词： Uric acid Thyroid Chinese

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固体火箭发动机低空羽流场的相似研究

工程热物理学报 2005年第5期26卷 856-858页

作者：王雁鸣谈和平余其铮哈尔滨工业大学航空航天热物理研究所黑龙江哈尔滨150001

本文针对固体火箭发动机低空羽流场的数据外推问题进行研究。应用相似方法分析发动机低空羽流场模型,整理相似准则及相似条件。简化相似模型,根据工程计算半经验方法,拟和低空羽流温度场的计算公式,计算结果与工程计算数据基本吻合,验... 详细信息

本文针对固体火箭发动机低空羽流场的数据外推问题进行研究。应用相似方法分析发动机低空羽流场模型,整理相似准则及相似条件。简化相似模型,根据工程计算半经验方法,拟和低空羽流温度场的计算公式,计算结果与工程计算数据基本吻合,验证了相似方法的可行性。

关键词：固体火箭发动机羽流相似准则

心脏局部血管紧张素Ⅱ介导运动心脏重塑的机制

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成都体育学院学报 2014年第7期40卷 71-75,85页

作者：余启政李欣成都大学体育学院四川成都610106

文章通过文献法对运动心脏重塑概念、机制相关信号通路的最新研究进展进行了总结,重点对心脏血管紧张素II与运动心脏重塑的关系进行探讨。在此基础上,认定心脏局部血管紧张素II是维护心脏结构和功能稳定的重要因素,是运动心脏重塑的重... 详细信息

文章通过文献法对运动心脏重塑概念、机制相关信号通路的最新研究进展进行了总结,重点对心脏血管紧张素II与运动心脏重塑的关系进行探讨。在此基础上,认定心脏局部血管紧张素II是维护心脏结构和功能稳定的重要因素,是运动心脏重塑的重要介质,而运动心脏重塑存在生理性变化和病理性变化两种情况,即运动性心肌肥大处于完全的生理性肥大和病理性肥大之间的灰色地带。

关键词：局部血管紧张素Ⅱ 运动心脏心脏重塑

具有镜反射正弦表面的半透明介质层表观光谱发射特性

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红外与毫米波学报 1999年第4期18卷 276-282页

作者：黄勇夏新林谈和平余其铮哈尔滨工业大学能源科学与工程学院

通过离散基底面并结合光线跟踪法，将伪光源迭加法应用于一侧为镜反射半透明正弦曲面、另一侧为漫射不透明基底面的半透明介质层表观光谱发射问题．给出了等温介质的表观光谱半球发射率与方向发射率分布，并分析了有关参数的影响．结果... 详细信息

通过离散基底面并结合光线跟踪法，将伪光源迭加法应用于一侧为镜反射半透明正弦曲面、另一侧为漫射不透明基底面的半透明介质层表观光谱发射问题．给出了等温介质的表观光谱半球发射率与方向发射率分布，并分析了有关参数的影响．结果表明。

关键词：半透明介质表观光谱发射弯曲表面伪光源迭加法

Effect of cholesterol metabolism on hepatolithiasis

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World Journal of Gastroenterology 2025年第1期31卷 157-162页

作者： Lin zheng Zi-yu Ye Jun-Ji Ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesNo.215 Heping West RoadShijiazhuang 050000Hebei ProvinceChina

Surgical intervention is currently the primary treatment for hepatolithiasis;how-ever,some patients still experience residual stones and high recurrence rates after *** metabolism seems to play an important role in hepatoli-thiasis pathogenesis.A high cholesterol diet is one of the significant reasons for the increasing incidence of ***,regular diet and appropriate medical intervention are crucial measures to prevent hepatolithiasis and reduce recurrence rate after *** dietary cholesterol and drugs that increase cholesterol stone solubility are key therapeutic approaches in treating *** article discusses the cholesterol metabolic pathways related to the pathogenesis of hepatolithiasis,as well as food intake and targeted therapeutic drugs.

关键词： Hepatolithiasis Cholesterol metabolism High-fat diet 3-hydroxy-3-methylglutaryl-coenzyme A reductase Interlobular bile duct

底水驱天然气地下储气库单井运行动态的模拟分析

维普期刊数据库评论

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维普期刊数据库

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哈尔滨建筑大学学报 2001年第1期34卷 67-70页

作者：谭羽非陈家新余其铮哈尔滨工业大学市政环境工程学院黑龙江哈尔滨150090

天然气地下储气库的运行，准确的确定库内各单井的运行动态非常重要。通过建立单井二维气水两相径向模型，采用全隐式牛顿迭代解法，数值模拟出在满足城市调峰需求时储库内单井的动态特征。模拟实例的计算结果表明：储库注采运行初期，... 详细信息

天然气地下储气库的运行，准确的确定库内各单井的运行动态非常重要。通过建立单井二维气水两相径向模型，采用全隐式牛顿迭代解法，数值模拟出在满足城市调峰需求时储库内单井的动态特征。模拟实例的计算结果表明：储库注采运行初期，压力变化较快后趋平稳，且采出同量气体Δp的下降比注入同量气体Δp升高变化大。该模型对改善储库的储存效果，提高采收率，具有很大的理论指导意义。

关键词：底水驱天然气地下储气库单井动态数字模型