Changes in preventive care utilisation and its influencing factors among Chinese adults before and after the healthcare reform: cross-sectional evidence from the China Health and Nutrition Survey in 2004-2015.

Objective: China launched its health reform in 2009. This study aimed to assess changes in preventive care utilisation (PCU) and its relationship with the healthcare reform.

Design: A cross-sectional study using demographic characteristics, socioeconomic status, environmental factors, and lifestyle and health status data of adults from five waves (2004-2015) of the China Health and Nutrition Survey (CHNS) was conducted.

A novel method based on nonparametric regression with a Gaussian kernel algorithm identifies the critical components in CHO media and feed optimization.

As the composition of animal cell culture medium becomes more complex, the identification of key variables is important for simplifying and guiding the subsequent medium optimization. However, the traditional experimental design methods are impractical and limited in their ability to explore such large feature spaces. Therefore, in this work, we developed a NRGK (nonparametric regression with Gaussian kernel) method, which aimed to identify the critical components that affect product titres during the development of cell culture media.

The ability to obtain, appraise and understand health information among undergraduate nursing students in a medical university in Chongqing, China.

Aim: The aim of this study was to survey the ability of nursing students to obtain, appraise and understand health information and its influencing factors among undergraduate nursing students in a medical university in Chongqing, China.

Design: A cross-sectional survey.

Method: The sample was obtained using stratified sampling methods.

Identification of multiple sources of the acidic charge variants in an IgG1 monoclonal antibody.

Charge variants, especially acidic charge variants, of recombinant monoclonal antibodies are the major critical quality attributes in the biotechnology industry due to their potential influence on stability and biological activity. The chemical properties of the acidic charge variants have been challenging to fully characterize, and it is critical for process development and optimization. To completely understand the multiple sources of acidic charge variants, the major charge forms of an IgG1 monoclonal antibody were firstly isolated and then analyzed by a battery of characterization tools.

[A Fast Method to Measure TAN and TBN of Used Lubricant Oil Based on Portable Infrared Spectrometer].

TAN and TBN which provide information about the degree of lubricating oil oxidation and the properties of alkali reserve is usually used in measurement of aging degree of lubricant, and its value can determine whether the amount of certain acid additives added is enough. It can avoid the problems such as, the abnormal wearing, corruption, deposit, filter blocking. The TAN and TBN of Lubricating oil is measured by the standard based on acid-base titration, in which potentiometric titration is used more.