检索结果-内蒙古大学图书馆

中国男科学杂志 2017年第1期31卷 46-49页

作者：张建阿不力孜.司马义李九智艾尼瓦尔.玉苏甫杨书文阿卜力孜.阿塔伍拉崔书锦孔广起纪智礼辛钟成首都医科大学附属北京潞河医院北京101149 新疆自治区人民医院河北医科大学第二医院洛浦县人民医院北京大学第一医院

目的通过回顾性临床资料分析,进一步提高急性睾丸扭转的诊疗水平。方法分析16例(其中2例为双侧睾位扭转)睾丸扭转患者经诊治后随访3~15年的临床资料。结果 7例行患侧睾丸复位固定术及对侧睾丸预防性固定术,7例行患侧睾丸切除术及对侧睾... 详细信息

目的通过回顾性临床资料分析,进一步提高急性睾丸扭转的诊疗水平。方法分析16例(其中2例为双侧睾位扭转)睾丸扭转患者经诊治后随访3~15年的临床资料。结果 7例行患侧睾丸复位固定术及对侧睾丸预防性固定术,7例行患侧睾丸切除术及对侧睾丸预防性固定术,1例双侧睾丸扭转行双侧睾丸切除术,1例双侧睾丸扭转行左侧睾丸切除术及右侧睾丸复位固定术。手术切除标本病理检查均为睾丸坏死。16例随访3年~15年,随访期间1例无睾丸患者血清睾酮偏低;其余15例患者未见明显血清睾酮异常。未切除睾丸的15例中有8例8侧(其中7例患侧睾丸行复位固定术,另1例是双侧睾丸扭转,1侧睾丸行复位固定术)患者患侧睾丸复位固定术后未再次发生患侧睾丸扭转,l例术后出现患侧复位固定的睾丸较同龄人轻度缩小;14例14侧(其中7例患者行睾丸切除术,7例患侧行睾丸复位固定术)患者对侧睾丸预防性固定术后未发生预防侧睾丸的扭转,l例术后出现对侧预防性固定的睾丸较同龄人轻度缩小。16例中,除了1例无精子症外,2例为少精子症,l例为弱精子症,l例为少弱精子症,余11例精液检查均正常。1例无睾丸患者为无精子症,未见明显阴茎晨间勃起,为重度阴茎勃起功能障碍,2例患者(其中1例为弱精子症,1例为少弱精子症)出现轻度阴茎勃起功能障碍,13例患者无勃起功能障碍;随访期间11例生育下一代。结论彩色多普勒血流显像是诊断急性睾丸扭转的可靠方法,早期手术探查对提高睾丸成活率及保护其功能有重要意义。

关键词：精索扭转随访研究生育力勃起功能障碍

来源：评论

学校读者我要写书评

暂无评论

Geochronology and Hf Isotopes of Granite Gravel from Fanjingshan, South China: Implication for the Precambrian Tectonic Evolution of Western Jiangnan Orogen

引用

Journal of Earth Science 2014年第4期25卷 619-629页

作者： Jinbao Su Yueqiao Zhang shuwen Dong Xuanhua Chen Yong Li Jianjun cui School of Earth Sciences and Engineering Hohai University Institute of Geomechanics Chinese Academy of Geological Sciences Chinese Academy of Geological Sciences

The debate of assembly time between the Yangtze and Cathaysia blocks has aroused the disputation on the formation mechanism of Jiangnan orogen, South China. Therefore widespread magmatism of 830-750 Ma in South China is interpreted as the product of either plume or arc magmatism, which results in distinctive depositional background in the Neoproterozoic. Granite gravel located at the unconformity between the Banxi Group and Fanjingshan Group of the western Jiangnan orogen was collected, which gave a new age limit to the deposition of the Banxi Group and Nanhu rift. Zircons from the granite gravel crystallized yield a weighted mean 2~6pb/238U age of 789~11 Ma, which probably represents the end of the Jiangnan orogeny and marks the onset of Nanhua rift. These zircons have negative εHf（t） of -2.1 to -6.0, with TDM of 1.38-1.52 Ga and Tcrust of 1.81-1.98 Ga indicating an old continental crust origin for the granite.

关键词： Jiangnan orogeny Nanhua rift Rodinia Neoproterozoic.

来源：评论

学校读者我要写书评

暂无评论

Detrital zircon geochronology of pre-Cretaceous strata: tectonic implications for the Jiangnan Orogen, South China

引用

GEOLOGICAL MAGAZINE 2014年第6期151卷 975-995页

作者： Su, Jinbao Dong, shuwen Zhang, Yueqiao Li, Yong Chen, Xuanhua cui, Jianjun Hohai Univ Sch Earth Sci & Engn Nanjing 210098 Jiangsu Peoples R China Chinese Acad Geol Sci Inst Geomech Beijing 100037 Peoples R China Chinese Acad Geol Sci Beijing 100037 Peoples R China

Fifteen sandstone samples taken from pre-Cretaceous strata of the Yangtze Block are analysed to constrain the evolution of the South China Block, especially the assembly between the Yangtze and Cathaysia blocks. The results show that the maximum depositional age of the Neoproterozoic Lengjiaxi Group adjacent to the Cathaysia Block is c. 830 Ma, differing from that of the Kunyang and Dahongshan groups (> 960 Ma) on the southwestern margin of the Yangtze Block. The detrital zircons from Palaeozoic samples from the Yangtze Block have similar age populations to those in the Cathaysia Block, and they may originate from the Cathaysia Block according to palaeogeographic, palaeocurrent and former research data. The detrital zircons of Middle-Upper Jurassic sandstones in the southwestern and central Yangtze Block yield dominant age populations at 2.0-1.7 Ga and subordinate groups of 2.6-2.4 Ga, 0.8-0.7 Ga and 0.6-0.4 Ga. The Upper Triassic strata may be derived from the southern Yangtze and North China blocks due to the collisions between the Indosina, South China and North China blocks, whereas the Jurassic sediments may be partly derived from uplift and erosion of the Jiangnan Orogen due to an intracontinental orogeny induced by Pacific subduction towards the Eurasia Plate. The detrital age spectra and provenance data for basement in the South China Block are analysed and compared with each other. The South China Block has affinity with Australia not only in the Columbia supercontinent but also in the Rodinia supercontinent. We infer the existence of an ancient orogen under the western Jiangnan Orogen, which may have occurred during the Columbia age, earlier than the Sibao orogeny. This is supported by seismic profile proof from the SinoProbe.

关键词： Sibao orogeny Columbia supercontinent Rodinia intracontinental provenance

来源：评论

学校读者我要写书评

暂无评论

Effect of power ultrasound pretreatment on peptidic profiles and angiotensin converting enzyme inhibition of milk protein concentrate hydrolysates

引用

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014年第12期94卷 2420-2428页

作者： Uluko, Hankie Liu, Lu Li, Hongjuan cui, Wenming Zhang, shuwen Zhao, Lili Xue, Haixiao Lv, Jiaping CAAS Inst Agrofood Sci & Technol Beijing 100193 Peoples R China Bunda Coll Agr Dept Agr Engn Fac Agr Lilongwe Malawi

BACKGROUND: The use of power ultrasound as a pretreatment to enhance the hydrolysis of milk protein concentrate (MPC) and subsequent angiotensin converting enzyme (ACE) inhibitory activity has been studied. Liquid chromatography was used to analyse peptide profiles of Neutrase-derived MPC hydrolysates after pretreatment at 0, 1, 3, 5 and 8 min at an ultrasound power level of 800 W. RESULTS: The peptide profiles indicated an increase in number of peptides when ultrasound pretreatment was applied. There was also an increase in the degree of hydrolysis of MPC hydrolysates. The profiles indicated that new small peptides in ultrasound pretreated samples (1-5 min) which were not present in the control samples and 8 min pretreated samples, could be responsible for increased ACE inhibitory activity. These small peptides were digested in the 8 min pretreated samples. CONCLUSION: Ultrasound pretreatment of MPC increases the ACE inhibitory activity of the hydrolysates because of the production of new small peptides. This can be used as a means to derive potent ACE inhibitory peptides at industrial scale in complex protein sources. (C) 2014 Society of Chemical Industry

关键词： ultrasound angiotensin converting enzyme hydrolysis milk protein concentrate

来源：评论

学校读者我要写书评

暂无评论

煤制甲醇中的合成气深冷分离制LNG的工艺研发

引用

石油与天然气化工 2015年第1期44卷 54-58页

作者：赖秀文张淑文胡明辉陈兵崔超岭杭州杭氧股份有限公司石化工程公司

基于杭氧承担的国内煤制芳烃10×104 t／a项目中的合成气深冷分离制L N G成套装置为背景，研发出一种带膨胀机的液化工艺。利用高压氮气通过透平膨胀机绝热膨胀的循环制冷提供大部分冷量，并利用双塔低温精馏实现合成气的分离与LNG... 详细信息

基于杭氧承担的国内煤制芳烃10×104 t／a项目中的合成气深冷分离制L N G成套装置为背景，研发出一种带膨胀机的液化工艺。利用高压氮气通过透平膨胀机绝热膨胀的循环制冷提供大部分冷量，并利用双塔低温精馏实现合成气的分离与LNG的液化，气体在膨胀机中膨胀降温的同时，能够输出功并用于驱动增压机。该工艺相对于混合冷剂工艺来说，具有整体紧凑、占地面积小、冷剂消耗少（约89％）、综合运行成本较低、安全性高、启动时间短以及适应在70％～110％的变负荷工况下运行等特点，充分实现了从工艺到设备国产化的目标。

关键词：深冷分离甲醇合成气膨胀制冷循环精馏塔

来源：评论

学校读者我要写书评

暂无评论

Pilot-scale membrane fractionation of ACE inhibitory and antioxidative peptides from ultrasound pretreated milk protein concentrate hydrolysates

引用

JOURNAL OF FUNCTIONAL FOODS 2014年第1期7卷 350-361页

作者： Uluko, Hankie Zhang, shuwen Liu, Lu Li, Hongjuan cui, Wenming Xue, Haixiao Zhao, Lili Sun, Yanjun Lu, Jing Lv, Jiaping Chinese Acad Agr Sci Inst Agrofood Sci & Technol Beijing 100193 Peoples R China Bunda Coll Agr Dept Agr Engn Fac Agr Lilongwe Malawi Bright Dairy & Food Co Ltd Dairy Res Inst State Key Lab Dairy Biotechnol Shanghai 200436 Peoples R China

A batch mode, pilot-scale process, involving ultrasound pretreatment (USP), enzymolysis, membrane filtration and drying was investigated for the production of angiotensin converting enzyme (ACE) inhibitory and antioxidative peptides from milk protein concentrate (MPC). The MPC solutions (2% or 5% protein) were hydrolyzed for 2 h with Neutrase at enzyme-to-substrate ratio of 1:50 (w/w) in 50 L batches after USP for 4 min at 800 W Ultrafiltration (8 and 3.5 kDa membranes) and nanofiltration (0.2 kDa membrane) were done to produce 4 fractions (F1, >8 kDa;F2, 3.5-8 kDa;F3, 0.2-3.5 kDa;and F4, <0.2 kDa). Analyses showed that large amounts of ACE inhibitory peptides were recovered by the 3.5 kDa membrane and concentrated by nanofiltration making F3 ideal for ACE inhibition (IC50 = 0.096 +/- 0.010 mg mL(-1)) while antioxidative peptides were abundant in F2 with bioactivity not affected by drying method. Initial substrate concentration had no significant effect (P <0.05) on bioactivity. Furthermore, permeation fluxes were high when a low protein concentration was used. Ultrafiltration achieved peptide rejections rates in the range of 24.0-33.7% and reached 89.6% during nanofiltration. The results indicate that membrane filtration can separate ACE inhibitory and antioxidative peptides in complex protein hydrolysates. (C) 2014 Elsevier Ltd. All rights reserved.

关键词： Milk protein concentrate Ultrasound Hydrolysis Angiotensin converting enzyme Antioxidative Membrane filtration

来源：评论

学校读者我要写书评

暂无评论

Effect of power ultrasound pre-treatment on the physical and functional properties of reconstituted milk protein concentrate

引用

JOURNAL OF FOOD ENGINEERING 2014年 124卷 11-18页

作者： Sun Yanjun Chen Jianhang Zhang shuwen Li Hongjuan Lu Jing Liu Lu Uluko, H. Su Yanling cui Wenming Ge Wupeng Lv Jiaping Chinese Acad Agr Sci Inst Agroprod Proc Sci & Technol Beijing 100193 Peoples R China Bright Dairy & Food Co Ltd Dairy Res Inst State Key Lab Dairy Biotechnol Shanghai 200436 Peoples R China North West Agr & Forestry Univ Yangling 712100 Shaanxi Peoples R China

This work investigated the impact of power ultrasound (PUS) pretreatment on the physical and functional properties of reconstituted milk protein concentrate (MPC) 80. Ultrafiltered/diafiltered (UF/DF) milk protein retentates were treated with PUS (12.50 +/- 0.31 W and 50% amplitude) for 0.5, 1, 2, and 5 min prior to spray drying. Results revealed that the particle size (D50) reduced from 28.45 mu m to 0.13 mu m after 0.5 min of sonication. Solubility increased significantly from 35.78% to 88.30% after 5 min of PUS pre-treatment. Moreover, the emulsifying activity index (EAI) of MPC samples increased significantly as the time of ultrasonic treatment was prolonged. Additionally, the emulsion stability index (ESI) initially increased after ultrasound treatment for 1 min. Surface hydrophobicity was greatly increased with more hydrophobic groups exposed to the environment. PUS pre-treatment also promoted an increase in the storage modulus (G') of the MPC solutions. Viscosity significantly decreased after PUS pre-treatment. This result was confirmed by the microstructure of the powder, with small particles formed and trapped in dents of large particles. However, sodium-dodecyl sulfate-polyacrylamide gel electrophoresis showed no significant change in protein molecular weight. (C) 2013 Elsevier Ltd. All rights reserved.

关键词： Milk protein concentrate 80 PUS pre-treatment Physical property Functionality

来源：评论

学校读者我要写书评

暂无评论

3.5%NaCl薄液膜下碳钢的腐蚀行为研究

引用

四川理工学院学报（自然科学版） 2015年第3期28卷 1-4页

作者：杨丽林修洲梅拥军李月崔学军罗淑文四川理工学院材料腐蚀与防护四川省重点实验室四川自贡643000 中国民航局第二研究所成都610041

为了进一步研究碳钢的海洋大气腐蚀机理,为减缓碳钢在海水环境薄液膜下的腐蚀提供理论与实验依据,采用自制的薄液膜腐蚀实验装置,利用交流阻抗法和极化曲线法讨论了碳钢材料在不同厚度3.5%Na Cl薄液膜下腐蚀行为。结果表明,碳钢在薄液... 详细信息

为了进一步研究碳钢的海洋大气腐蚀机理,为减缓碳钢在海水环境薄液膜下的腐蚀提供理论与实验依据,采用自制的薄液膜腐蚀实验装置,利用交流阻抗法和极化曲线法讨论了碳钢材料在不同厚度3.5%Na Cl薄液膜下腐蚀行为。结果表明,碳钢在薄液膜下的腐蚀比在全浸状态下的腐蚀更为严重;薄液膜腐蚀过程主要由浓度极化和活化极化两部分共同控制。在较薄液膜下,金属腐蚀速度主要由浓度极化控制;膜层较厚时,腐蚀速度主要由活化极化反应控制。溶液电阻随着膜厚的增大先迅速降低然后呈缓慢降低趋势,最终趋于稳定。

关键词：薄液膜腐蚀碳钢电化学行为

来源：评论

学校读者我要写书评

暂无评论

毛细管电泳-质谱联用技术研究进展

引用

氨基酸和生物资源 2015年第2期37卷 1-5页

作者：王宁刘佳李书文庞宗然崔箭申刚义中央民族大学中国少数民族传统医学研究院北京100081

毛细管电泳-质谱(CE-MS)联用技术兼具毛细管电泳高效分离能力与质谱高灵敏检测、高真度定性的优势,已成为物质分离分析研究的一种非常重要的工具。本文对近几年来CE-MS联用的关键技术及CE-MS在中药分析、环境检测等领域的一些应用进展... 详细信息

毛细管电泳-质谱(CE-MS)联用技术兼具毛细管电泳高效分离能力与质谱高灵敏检测、高真度定性的优势,已成为物质分离分析研究的一种非常重要的工具。本文对近几年来CE-MS联用的关键技术及CE-MS在中药分析、环境检测等领域的一些应用进展进行综述,对其发展进行了展望。

关键词：毛细管电泳-质谱联用关键技术应用

来源：评论

学校读者我要写书评

暂无评论

广州市中青年知识分子亚健康状况及其影响因素分析

引用

中国医药导报 2015年第30期12卷 12-16页

作者：崔周国许军吴伟旋张远妮苏淑文黄小微南方医科大学南方医院卫生经济管理科广东广州510515

目的了解广州市中青年知识分子亚健康状况及其影响因素,为提高中青年知识分子的健康水平提供参考依据。方法采用分层随机抽样的方法选取广州市2780名中青年知识分子并应用亚健康评定量表对其进行现场测试。结果中青年知识分子的亚健康... 详细信息

目的了解广州市中青年知识分子亚健康状况及其影响因素,为提高中青年知识分子的健康水平提供参考依据。方法采用分层随机抽样的方法选取广州市2780名中青年知识分子并应用亚健康评定量表对其进行现场测试。结果中青年知识分子的亚健康评定量表总分为(58.23±10.83)分,生理、心理、社会亚健康子量表的得分分别为(58.13±16.90)、(55.19±11.55)、(62.41±14.01)分。城镇居民组与公务员组的亚健康状况较差,大学生组的亚健康状况最好(F=398.635,P<0.01);青年组的亚健康状况优于中年组(t=8.377,P<0.01);女性组的亚健康状况优于男性组(t=5.000,P<0.01)。多因素分析显示,年龄、职业、性别、婚姻状况、日均工作时间、早餐习惯、睡眠时间、久坐或长时间伏案与操作电脑情况、锻炼情况是广州市中青年知识分子亚健康状况的影响因素,差异有统计学意义(P<0.05)。结论广州市中青年知识分子的亚健康状况,尤其是心理亚健康状况不够理想,并且差异较大。针对影响中青年知识分子亚健康状况的不同因素进行分析,可为提高中青年知识分子的健康状况提供依据。

关键词：亚健康状况影响因素亚健康评定量表中青年知识分子

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：