Sequential Profiling of Anti-SARS CoV-2 IgG Antibody in Post COVID-19 Patients

Upon SARS CoV-2 infection, humoral immune system triggers production of anti-SARS CoV-2 IgM and IgG antibodies. Currently, antibodies against SARS CoV-2 spike protein receptor binding domain play a central role in disease protection, making them potential target for in vitro diagnostics applications. This study determines the expression level and sustainability of anti-receptor binding domain (RBD) SARS CoV-2 IgG in post COVID-19 patients. Anti-RBD SARS CoV-2 IgG antibodies in patient serum were analysed by standardised indirect ELISA using SARS CoV-2 spike receptor binding domain protein and HRP conjugated anti-human IgG antibody (anti-h IgG). The study was conducted using 35 adult patient samples with confirmed SARS CoV-2 infection. Additionally, correlation between antibody response after each stage and disease symptoms in post COVID-19 patients were studied. Maximum antibody titre was seen at Day 40 and decreased relatively to Day 180 in antibody positive samples when compared with controls. Overall, more IgG antibody expression is observed in patients who suffered from loss of smell and taste at Day 40. 71% of the positive subjects in this study showed high SARS CoV-2 IgG antibody concentration of above 10 ng/mL and 37% showed strong antibody concentration above 20 ng/mL at the peak of seroconversion.     

论仫佬族传统体育“连结现象”的内涵

仫佬族是我国人口较少的一个民族,其传统体育项目中有一独特现象,即喜欢将参与的人或器械连结在一起进行娱乐。本文试图对这种＂连结现象＂进行分析,以此探究仫佬族传统体育文化的内涵,为仫佬族体育文化的理论研究提供参考。     

μ原子及其一些特征量举例

介绍μ子的发现,以及存在μ原子的事实,并通过实例讨论μ原子的特征量第一玻尔轨道半径和结合能,以及μ原子跃迁辐射光子的频率与波长。     

外文期刊装订中的几个相关问题

外文期刊装订工作是期刊管理中的一个重要环节,下架期刊的装订质量直接影响到馆藏过刊的质量,同时也会影响到读者的检索与利用.文章结合工作实际,对期刊装订中的难点与需要注意的问题进行分析与研究,以使今后的期刊装订工作更加规范与科学.     

校园网络安全管理的基本策略研究

校园网在运行过程中对管理和维护的要求越来越高,校园网的安全状况已成为直接影响学校教育教学活动的关键因素.文章在对校园网络攻击特征和地址盗用问题分析的基础上,提出一些多元素绑定技术作为校园安全管理的具体解决方案.     

On Demand Book Production with New Technologies

SUMMARY

This paper discusses the transformation of the book binding industry and possibilities that binding technology affords today's authors, publishers and book designers. Book manufacturers will endure, although they will be challenged to offer better products with ever faster service.     

Pioneering the Use of Polyurethane Adhesive in Library Binding

Adhesives have been used for years in library binding. This article reports on the use of polyurethane (PUR) adhesive being introduced into the library binding process. This glue has been used in the publishing industry for years, and technology has now made it viable for library binding. Bridgeport National Bindery, Inc. has performed significant testing on PUR adhesive, and has demonstrated that it conforms to the ANSI/NISO/LBI Z39-78-2000 Standard for Library Binding.     

计算机基础课程应积极体现“三生教育”

大学计算机基础课程是大学阶段的必修课,在促进人的全面发展中起着重要的作用,是落实素质教育的基本点。“三生教育”是全面推进素质教育的基本要求,是促进学生全面发展的基本途径,为此,计算机基础课程可以和“三生教育”有机的结合在一起,互相促进、互相完善。     

VC中利用DataGrid控件实现数据绑定

DataGrid控件是以表格形式显示数据的最常用的控件。本文通过实例详细介绍了在VC中如何利用DataGrid控件实现和Access数据库文件.mdb的动态绑定,以及采用Inno Setup软件进行ActiveX控件的注册,从而实现对数据库文件的浏览与编辑。     

谈汉语中的"自己"

汉语“自己”并不是纯粹的反身代词 ,而是反身代词与泛指代词的复合体 ;同时 ,“自己”的约束问题并不完全是一个句法问题 .目前还没有一种理想的句法理论可以在GB框架下圆满地解决汉语反身代词“自己”的长距离约束问题 .