Investigation on the mechanical properties of Bacillus subtilis self-healing concrete.

In the process of research and development of self-healing concrete, it is observed that there are three main factors controlling the self-healing effect of concrete: first, the bacteria with repair ability and strong vitality; Second, the carrying capacity of the carrier and the matching degree with concrete; The third is the concentration of bacteria. This paper focuses on the mechanical properties of Bacillus subtilis self-healing concrete with sisal fiber, PVA, and expanded perlite as the carrier. To better study the mechanical properties of self-healing concrete caused by the carrier, the experiment adopts the design parameters of C30 concrete and conducts experiments on compressive resistance, flexural resistance, freeze-thaw cycle, and sulfate corrosion resistance to analyze the influence of different carriers on the mechanical properties of self-healing concrete, and obtains the best carrier.

The China Patient-centered Evaluative Assessment of Cardiac Events (China PEACE) retrospective heart failure study design.

Introduction: Heart failure (HF) is a leading cause of hospitalisation in China, which is experiencing a rapid increase in cardiovascular disease prevalence. Yet, little is known about current burden of disease, quality of care and treatment outcomes of HF in China. The objective of this paper is to describe the study methodology, data collection and abstraction, and progress to date of the China Patient-centered Evaluative Assessment of Cardiac Events 5 Retrospective Heart Failure Study (China PEACE 5r-HF).

The primary health-care system in China.

China has made remarkable progress in strengthening its primary health-care system. Nevertheless, the system still faces challenges in structural characteristics, incentives and policies, and quality of care, all of which diminish its preparedness to care for a fifth of the world's population, which is ageing and which has a growing prevalence of chronic non-communicable disease. These challenges include inadequate education and qualifications of its workforce, ageing and turnover of village doctors, fragmented health information technology systems, a paucity of digital data on everyday clinical practice, financial subsidies and incentives that do not encourage cost savings and good performance, insurance policies that hamper the efficiency of care delivery, an insufficient quality measurement and improvement system, and poor performance in the control of risk factors (such as hypertension and diabetes).

[Prospective cohort study on the relationship between smoking cessation and cancer risk in males].

Objective: To investigate the effect of smoking cessation on the risk of cancer among male subjects.

Methods: Participants of this study were derived from the workers in Kailuan Group who took the health check-up examination in its 11 affiliated hospitals. The check-up examinations were given biennially based on uniformed standard.

[Effect of maximum blood pressure when discharged from the hospital on the prognosis among patients with acute ischemic stroke].

Objective: To investigate the relationship between maximum blood pressure and the prognosis after discharged from the hospital, among patients with ischemic stroke.

Methods: A cohort study was conducted which including 471 cases of ischemic stroke patients that were collected from February 2014 to December 2014 at the Second Affiliated Hospital of Harbin Medical University. Values of everyday blood pressure were measured on each patient at the first six days after admitted to the hospital.