检索结果-南通市图书馆

Vitamin D, Parathyroid Hormone, Insulin Sensitivity and Islet β-Cell Secretory Function in Diabetic Patients from South Kivu in the Democratic Republic of Congo: Cross-Sectional Study

引用

Journal of Diabetes Mellitus 2024年第2期14卷 81-94页

作者： Dieudonne Masemo Bihehe Ahadi Birindwa Bwihangane jean-Paulin Mukonkole Mbo michel Hermans Philippe Bianga Katchunga Faculté de Médecine H&#244pital Général de Référence de Panzi Université Evangélique en Afrique Bukavu DR Congo Département de Biologie Faculté des Sciences Université Officielle de Bukavu Bukavu DR Congo Département de Médecine Interne Université de Kisangani Kisangani DR Congo Service d’endocrinologie et de Diabétologie Cliniques Universitaires Saint-Luc Université Catholique de Louvain Bruxelles Belgique Département de Médecine Interne Cliniques Universitaires de Bukavu Université Officielle de Bukavu Bukavu DR Congo

Background: The role of vitamin D and parathyroid hormone in the metabolic profile of type 2 diabetes mellitus in sub-Saharan Africa has not been adequately assessed. The aim of this study was to determine the prevalence of low vitamin D level and secondary hyperparathyroidism and their association with insulin sensitivity and β-cell secretory function among Congolese type 2 diabetics. Methodology: Fasting glycaemia, fasting insulin, 25OH D3 and human parathyroid hormone (hPTH) were measured in one hundred and eighty-four type 2 diabetic patients followed as outpatients in South Kivu. Levels of 25OH D3 65 pg/ml defined low vitamin D and elevated parathyroid hormone levels, respectively. The HOMA model was used to measure insulin sensitivity and β-cell secretory function. Results: Medians (IQR) were 25.3 (20.4 - 32.4) ng/ml for 25OH D3 and 53.7 (38.4 - 115.7) pg/ml for hPTH. 58.7% of diabetics had insulin resistance, 126 (68.5%) had low vitamin D and 80 (43.5%) had hyperparathyroidism. In multivariate analysis, hPTH (partial r = −0.28;p = 0.0002) and 25OH D3 (partial r = 0.16;p = 0.03) showed an independent association with insulin sensitivity after adjustment for body mass index and waist circumference. Finally, hPTH (partial r = 0.27;p = 0.0002) was the sole determinant of β-cell secretory function. Conclusions: This study confirms the high prevalence of low vitamin D level and secondary hyperparathyroidism and their association with insulin resistance and impaired islet β-cell secretory function among Congolese with type 2 diabetes mellitus. Vitamin D and calcium supplementation should be envisaged for cases of deficiency in this region.

关键词： Vitamin D Parathyroid Hormone Diabetes Mellitus Insulin Resistance South Kivu

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genetic Diversity of Taro Landraces from Côte d’Ivoire Based on Qualitative Traits of Leaves

引用

Agricultural Sciences 2021年第12期12卷 1433-1446页

作者： jean-michel Niambet Koffi Kevin Kouamé Koffi Severin Beket Bonny Arsène Irié Zoro Bi Unité de Phytotecthnie et Amélioration Génétique UFR des Sciences de la Nature Université Nangui Abrogoua Abidjan C&#244 te d’Ivoire

Taro is an important crop species in Côte d’Ivoire. It is cultivated for its tubers and leaves. But its knowledge and genetic diversity and differentiation are very weakly documented. Several morphological types are found in rural area, but their identification is not very clear, and their agronomic potentiality is underexploited. In this context we initiated a survey and collected 213 accessions from 14 growing regions of Côte d’Ivoire. The diversity was evaluated based on seven qualitative traits of leaves (Shape of the base of the leaf, Predominant position (shape) of the leaf blade surface, Margin of the leaf blade, Leaf blade variegation, Profile of the petiolar junction, Shape of the leaf sheath, Shape of the appendix) during an experimentation conducted in rural area. The objective of this study was to characterize the collection of taros collected in different geographical zones of Côte d’Ivoire and identify the genera cultivated. Results of our study indicated that excepted margin of the leaf blade all traits are very discriminant. Several variants were observed for each of traits. According to observations and statistics analysis accessions were separated into two main groups. The characteristics of these groups indicate that taro cultivated in Côte d’Ivoire could belong to two genera: Xanthosoma and Colocasia.

关键词： Côte d’Ivoire Colocasia Diversity Taro Xanthosoma

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Metamaterial-based octave-wide terahertz bandpass filters

引用

Photonics Research 2023年第4期11卷 526-532页

作者： ALI MALEKI AVINASH SINGH AHMED JABER WEI CUI YONGBAO XIN BRIAN T.SULLIVAN ROBERT W.BOYD jean-michel MÉNARD Department of Physics University of OttawaOttawaOntario K1N 6N5Canada Iridian Spectral Technologies Ltd OttawaOntario K1G 6R8Canada School of Electrical Engineering and Computer Science University of OttawaOttawaOntario K1N 6N5Canada Institute of Optics and Department of Physics and Astronomy University of RochesterRochesterNew York 14627USA

We present octave-wide bandpass filters in the terahertz(THz)region based on bilayer-metamaterial(BLMM)*** passband region has a super-Gaussian shape with a maximum transmittance approaching 70%and a typical stopband rejection of 20 *** design is based on a metasurface consisting of a metallic squarehole array deposited on a transparent polymer,which is stacked on top of an identical metasurface with a subwavelength *** superimposed metasurface structures were designed using finite-difference time-domain(FDTD)simulations and fabricated using a photolithography *** characterization of these structures between 0.3 and 5.8 THz is performed with a time-domain THz spectroscopy *** agreement between experiment and simulation results is *** also demonstrated that two superimposed BLMM(2BLMM)devices increase the steepness of the roll-offs to more than 85 dB/octave and enable a superior stopband rejection approaching 40 dB while the maximum transmittance remains above 65%.This work paves the way toward new THz applications,including the detection of THz pulses centered at specific frequencies,and an enhanced time-resolved detection sensitivity toward molecular vibrations that are noise dominated by a strong,off-resonant,driving field.

关键词： process. field. approaching

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

净化理论:精神分析与戏剧

引用

文化艺术研究 2015年第2期8卷 138-149页

作者： jean-michel Vives 王晶 University of Nice 浙江大学杭州310058

和悲剧有关的净化概念,是亚里士多德在其著作《诗学》中提出的。几个世纪以来,这一创新而又让人费解的概念引发了广泛的评论和激烈的争议。1895年,弗洛伊德和布洛伊尔在他们的合著《歇斯底里研究》中重新考虑了这一概念,并提出了名为"... 详细信息

和悲剧有关的净化概念,是亚里士多德在其著作《诗学》中提出的。几个世纪以来,这一创新而又让人费解的概念引发了广泛的评论和激烈的争议。1895年,弗洛伊德和布洛伊尔在他们的合著《歇斯底里研究》中重新考虑了这一概念,并提出了名为"宣泄净化疗法"的治疗手段。本文在仔细研究弗洛伊德和拉康关于悲剧净化理论的作品的基础上,考察了其对于精神分析治疗的隐含意义。本文引用了弗洛伊德《戏剧中的变态角色》(1905)和拉康对索福克勒斯的《安提戈涅》的评述(1960),意图论证净化理论与其说是一种与精神发泄有关的释放机制,倒不如说它本身就是一个实际的分析过程。在此过程中,主体被揭示,并得以直面自己神秘的欲望。

关键词：净化欲望精神分析治疗悲剧揭示

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

用直接侧进胶热流道替换冷流道

引用

现代塑料 2016年第1期 17-19页

作者： jean-michel Cunche 赫斯基注塑系统有限公司

对于注塑生产企业而言，消除冷流道转而采用热流道，可以为其带来材料的节约和成型周期的缩短，从而显著提高生产效益。本文介绍了一种特别适合于成型深长形状及较小产品的直接侧进胶热流道系统，

关键词：热流道系统生产企业成型周期生产效益注塑

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

解冻期间石灰岩中P波速度和衰减的实验室测定

引用

油气藏评价与开发 1994年第6期 80-81页

作者： jean michel Remy

在结冻和解冻的几个周期中,我们在实验室用超声波测定了纵波的速度和衰减,用这种方法来估计层状石灰岩中结冻造成破坏的情况。我们采用脉冲透射法和频谱率法来估计相对于衰减很小的铝(参照样品)的P波速度和衰减值。石灰岩样品在真空条... 详细信息

在结冻和解冻的几个周期中,我们在实验室用超声波测定了纵波的速度和衰减,用这种方法来估计层状石灰岩中结冻造成破坏的情况。我们采用脉冲透射法和频谱率法来估计相对于衰减很小的铝(参照样品)的P波速度和衰减值。石灰岩样品在真空条件下水饱和,用塑料外壳罩住,浸在防冻液中(溶解有

关键词：石灰岩碳酸盐岩波速度岩石样品岩样实验室

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

肉类消费：营养功效与健康影响

引用

肉类研究 2015年第2期29卷 25-28页

作者： jean-michel LECERF 黄亚宇霍云龙李艳玲孟庆翔法国巴斯德研究所(里尔)营养研究部里尔59000法国不详

肉类消费常被认为是导致一些疾病的原因。对于代谢性疾病(肥胖、代谢综合征、糖尿病)和心血管疾病来说,肉类消费本身不是引起疾病的原因,但饮食模式可能与疾病的产生有关。至于结直肠癌,已有数据分析结果显示,过量食肉(特别是烹饪方式... 详细信息

肉类消费常被认为是导致一些疾病的原因。对于代谢性疾病(肥胖、代谢综合征、糖尿病)和心血管疾病来说,肉类消费本身不是引起疾病的原因,但饮食模式可能与疾病的产生有关。至于结直肠癌,已有数据分析结果显示,过量食肉(特别是烹饪方式不当的情况下)的确会增加患病的风险。一些相关的营养学和遗传学因素可以有保护(或抗癌)作用。适当食肉,并配以健康的烹饪方式,对平衡饮食是很重要的。

关键词：肉类健康烹饪营养代谢性疾病结直肠癌

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prokineticin 2/Bv8 is expressed in Kupffer cells in liver and is down regulated in human hepatocellular carcinoma

引用

World Journal of Gastroenterology 2008年第8期14卷 1182-1191页

作者： Justin Monnier Claire Piquet-Pellorce jean-Jacques Feige Orlando Musso Bruno Clément Bruno Turlin Nathalie Théret michel Samson INSERM U620 Université de Rennes 1 IFR140 2 avenue du Pr. Léon Bernard Rennes cedex 35043 France INSERM U522 Rennes France INSERM U878 Grenoble France Service d'Anatomo-pathologie CHU Pontchaillou Rennes France

AIM： TO study the implication of prokineticin 1 （PKI/EGVEGF） and prokineticin 2 （PK2/13v8） in hepatocellular carcinoma angiogenesis.METHODS： The gene induction of PK1/EG-VEGF and PK2/Bv8 was investigated in 10 normal, 28 fibrotic and 28 tumoral livers by using real time PCR. Their expression was compared to the expression of VEGF （an angiogenesis marker）, vWF （an endothelial cell marker） and to CD68 （a monocyte/macrophage marker）. Furthermore, the rnRNA levels of PK1/EG-VEGF, PK2/Bv8, prokineticin receptor 1 and 2 were evaluated by real time PCR in isolated liver cell populations. Finally, PK2/Bv8 protein was detected in normal liver paraffin sections and in isolated liver cells by immunohistochernistry and immunocytochemistry.RESULTS： PK2/Bv8 mRNA but not PK1/EG-VEGF was expressed in all types of normal liver samples examined. In the context of liver tumor development, we reported that PK2/13v8 correlates only with CD68 and showed a significant decrease in expression as the pathology evolves towards cancer. Whereas, VEGF and vWF mRNA were significantly upregulated in both fibrosis and HCC,as expected. In addition, out of all isolated liver cells examined, only Kupffer cells （liver resident macrophages） express significant levels of PK2/Bv8 and its receptors, prokineticin receptor 1 and 2.CONCLUSION： In normal liver PK2/Bv8 and its receptors were specifically expressed by Kupffer cells. PK2/Bv8 expression decreased as the liver evolves towards cancer and did not correlate with HCC angiogenesis.

关键词： Prokineticin Hepatocellular carcinoma PK2/Bv8 Angiogenesis Kupffer cells Vascular endothelial growth factor Liver

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of aging on the microstructures and mechanical properties of extruded AM50+xCa magnesium alloys

引用

北京科技大学学报 2006年第8期28卷 749-749页

作者： WANG Qudong PENG Jianguo Sukry michel jean-Jacques Blandin National Engineering Research Centre of Light Alloys Net Forming School of Materials Science and Engineering Shanghai Jiaotong University Shanghai 200030 China Institute National Polytechnique de Grenoble （INPG） G6nie Physique et M6canique des Mat6riaux （GPM2） UMR CNRS 5010 ENSPGBP46 38402 Saint-Martin d＇Heres Cedex France

The effects of aging treatment on the microstructures and mechanical properties of extruded AM50+xCa alloys （x=0,1%,2% in mass fraction） were studied. The results indicated the secondary phase Mg 17 Al 12 precipitated from the saturated α-Mg solid solution while Al2Ca changed slightly when the aging time was increased. The hardness of extruded AM50+xCa alloys increased initially to its peak,and then dropped to reach its original hardness with the increase in aging time. With the increase in aging temperature,the hardness of the AM50+2Ca alloy decreased,whereas the hardness of AM50 and AM50+1Ca alloys decreased in the initial stages of aging treatment and increased in the later stages of aging treatment. The tensile strengths of AM50 and AM50+1Ca alloys increased after aging treatment for the precipitation of Mg 17 Al 12 phase,which increases the resistance against dislocation movement at the grain boundary; with increase in aging temperature,their tensile strengths increased. For AM50+2Ca alloy,the tensile strength declined after aging at 150?℃ and 175?℃,while it increased slightly at 200?℃. The ductility of AM50+xCa alloys （x=0,1%,2%） declined after aging treatment.

关键词：镁合金微观结构力学性能老化硬度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Economic Performance Optimization of a PV-BESS Power Generator: A Case Study La Reunion Island

引用

Smart Grid and Renewable Energy 2017年第4期8卷 114-128页

作者： Cédric Damour michel Benne Frédéric Alicalapa Brigitte Grondin-Perez jean-Pierre Chabriat University of La Reunion Saint Denis France

This paper proposes an economic performance optimization strategy for a PV plant coupled with a battery energy storage system. The case study of La Reunion Island, a non-interconnected zone (NIZ) with a high level of renewable energy sources (RES), is considered. This last decade, to reach the ambitious target of electricity autonomy by 2030 set by the local authorities, local and national plans have been launched to promote renewable energy sources integration that led to a noticeable development of photovoltaic (PV) systems. To avoid a decrease of the grid reliability due to a large integration of intermittent energy sources into a non-interconnected grid, the authorities have introduced new regulatory rules for RES producers. The proposed optimization strategy relies on these new regulatory rules and takes into account the energy market data, the amount of PV production subject to penalties for imbalance, the batteries and the PV technological characteristics together with a PV production forecast model. Due to its high convergence rate to the true global minimum and its perfect suitability to practical engineering optimization problems, the recently developed Modified Cuckoo Search algorithm is used as optimization algorithm. The effectiveness and relevance of the proposed strategy are assessed on experimental data collected on a real PV power plant. An economical analysis demonstrates that the proposed optimization strategy is able to fulfill the new regulatory rules requirements while increasing the economic performance of the system.

关键词： Power System Economic Analysis and Optimization PV Plant Battery Energy Storage System Metaheuristic Optimization Algorithm

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：