检索结果-南通市图书馆

Role of fatty acids and calcium in male reproduction

Reproductive and Developmental Medicine 2022年第1期6卷 57-64页

作者： Taniya Naz Srinjoy Chakraborty sudipta saha Molecular Reproductive Physiology Laboratory Amity Institute of Physiology and Allied SciencesAmity University Uttar PradeshNoida 201313India

Both fatty acids (FAs) and calcium ions play important roles in contraceptive cyclesvia several systems. Polyunsaturated FAs (PUFAs) act as precursors for prostaglandin production and can alter the expression of numerous crucial catalysts that are involved in prostaglandin and steroid digestion. Lipids are essential components of cell membranes. A diet rich in PUFAs enhances sperm motility and viability. It also improves testis development and spermatogenesis in several domesticated animal species. Increased PUFA content in spermatozoa increases plasma membrane fluidity, which is important for fertilization. However, the major drawback of high dietary PUFA intake is that it increases the levels of reactive oxygen species in the body. An increase in reactive oxygen species levels markedly affects fertility. Calcium is an important component that acts as an intra-cellular secondary messenger and plays an important role in some of the physiological processes that occur in male gametes. Some of these processes include spermatogenesis, sperm motility, capacitation, acrosome response, and fusion of gametes. These processes are associated with calcium influx through ion protein channels. Dietary fat intake is associated with increased intestinal calcium absorption. In this review, we discuss the impact of lipids, particularly PUFAs and monounsaturated FAs, and calcium ions on male reproduction, along with their effects on each other.

关键词： Infertility treatment Male infertility Motility regulation Polyunsaturated fatty acids Sperm motility

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

Quality Study of Automated Machine Made Environmentally Friendly Brick (KAB) Sample Using Film Neutron Radiography Technique

引用

Journal of Building Construction and Planning Research 2013年第4期1卷 141-152页

作者： Khurshed Alam Robiul Islam sudipta saha Nurul Islam Syed Azharul Islam Department of Physics Jahangirnagar University Savar Bangladesh Institute of Nuclear Science and Technology AERE Savar Bangladesh

Neutron radiography (NR) technique has been adopted to study the internal structure and quality of the KAB bricks made by Hoffman kiln method. Thermal neutron radiography facility installed at the tangential beam port of 3 MW TRIGA Mark-II Research Reactor, AERE, Savar, Dhaka, Bangladesh is used in the present study. Measurements were made to determine the internal structure and quality of the automated machine made environmentally friendly brick sample. In this case, optical density/gray values of the neutron radiographic images of the sample have been measured. From these measurements, the porosity, water penetrating height, water penetrating behavior, initial rapid absorption of water (IRA), elemental distribution/homogeneity and incremental water intrusion area in the sample have been found. From the observation of different properties, it is seen that, homogeneity of the Hoffman kiln brick KAB is not perfectly homogeneous and contains small internal porosity;the incremental water intrusion area is very poor, and the water penetrating height through the two edges is higher than the middle part;the initial rapid absorption (IRA) rate is also very poor and the water penetrating behavior of the samples is different as like as stair, capillary, wave and zigzag shape. From these points of view, it is concluded that the quality of the environmentally friendly brick KAB is better. The results obtained and conclusion made in this study can only be compared to the properties of bricks produced under similar conditions with similar raw materials.

关键词： Neutron Radiography Technique Water Penetrating Height/Behavior IRA

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

Does an Individual’s Living Accommodation Impact their Ability to Cope with the Pandemic?A Hypothesis for Designing Infrastructure to Eliminate Mental Health Problems during COVID-19

引用

Psychosomatic Medicine Research 2022年第3期4卷 14-17页

作者： Akshat D.Modi sudipta saha Dharmeshkumar M.Modi Department of Biological Sciences University of Toronto ScarboroughTorontoON M1C 1A4Canada Department of Genetics and Development Krembil Research InstituteUniversity Health NetworkTorontoON M5T 2S8Canada Dalla Lana School of Public Health University of TorontoTorontoON M5T 3M7Canada The University of Toronto and International Scientists Association University of Toronto ScarboroughTorontoON M1C 1A4Canada

The coronavirus(COVID-19)pandemic has caused severe medical emergencies,economic depression,inflation,social distress,and research burden *** the severity of the spreading COVID-19,individual governments and the World Health Organization have mandated several safety protocols including quarantine,physical distancing,advanced research in decoding the disease mechanism to build an effective vaccine,and promoting mental health to achieve the aim of coping through this infectious *** the globe,mental health research emphasizes how social isolation impacts anxiety and depression,however,the cause of mental health depletion due to the type of individual's living accommodation(apartment and house)during a pandemic remains *** apartments have high elevation and high population density while the houses have low elevation and low population density as they are more spaced *** paper presents a novel hypothesis to maintain/enhance individuals’mental health during the pandemic,known as“Modi’s Pandemic Infrastructure Hypothesis”,which suggests that individuals residing in varying living accommodations(*** or house)would exhibit a significant difference in the experienced pandemic(***-19)anxiety due to varying amount of experienced“silent stress”.Hence,any type of infrastructure(medical,residential,educational,or corporate)should be designed following the public survey of that geographic area based on hypotheses laid in this paper,to minimize the magnitude of“silent stress”.“Silent stress”can be defined as the stress that is unknowingly experienced in the assimilated living accommodation,which is responsible for depleting individuals’mental health and affecting the ability to cope with the *** support of this novel hypothesis,previous research has demonstrated that the number of coronavirus per unit area has a positive association with elevation above the ground level while a negative association with the populati

关键词： COVID-19 Infectious disease Mental health Living accommodation Elevation Population density

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

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

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：