核电前期非核级工程安全质保管理实践

进厂道路工程是中电投广西核电有限公司核电前期阶段首个自主化管理项目,从安全质保体系确定到现场工程实施,每个环节都严格以法规为基础,在核电前期非核级工程管理上进行了实践,为后续自主化和非核级项目管理提供了经验,对其它新建核电厂前期安全质保工作有借鉴意义。

THE RHEOLOGICAL PROPERTIES AND OUTBURST MECHANISM OF GASEOUS COAL

Coal and methane outburst is one of the harmful disasters in coal mines. We have studied the rheological properties of gaseous coal in laboratory and obtained its rheological fracture principle. This principle can better explain and describe the outburst mechanism of gaseous coal. Thereby a rheological hypothesis of coal and methane outburst is put forward in this paper.

Evaluation of protective quality of prestressed concrete containment buildings of nuclear power plants

The permeability and sorptivity properties of the two prestressed concrete containment buildings （PCCBs） of a nuclear power plant in South China, which had been under operation for 5 years, were measured by using the autoclam permeability system. The air permeability, sorptivity and water permeability indexes of No.1 PCCB are smaller than or equal to 0.11 ln（102 Pa）/min, 0.98×10 ^7 m3/minl/2 and 1.93×10 ^7 m3/min1/2, respectively, and the air permeability, sorptivity and water permeability indexes of No.2 PCCB are smaller than or equal to 0.17 In（102 Pa）/min, 1.6×10 ^7 m3/min1/2 and 4.43 ×10 ^7 m3/min1/2, respectively. Based on the criteria for evaluating the protective quality of concrete structures in terms of their permeability and sorptivity properties, proposed by the research organization of the autoclam permeability system, the protective quality of No. 1 PCCB is still in very good grade and that of No.2 PCCB is not in very good grade but in good grade, and the in-service inspection of the protective quality of No.2 PCCB should be strengthened in the future.

Molecular Biological Detection of Biological Pollution in Water Environment

Water is contaminated mainly by chemical, physical and biological pollutants. At present, domestic reports on biological pollution of water environment are much less. Biological pollution in water environment pollution which is stable and infectious is the main part of water pollution. To fastly and accuratly detecte biological contamination of the water environment is extremely important for the control of disease outbreaks and water quality protection and public health security. This paper systematically introduces the research progress in biological water environment pollution detection methods in molecular biology aquatic environment, and explore molecular biology methods in the detection of biological contamination in water environment problems and trends.

Integration of Energy and Fire Prevention Systems in Green Building

Green buildings should be sustainable, efficient, economical, and to improve the quality of life of users and nearby residents. Unfortunately, some architecture features fostered by energy and environmental certifications do not comply with fire prevention codes. Several factors can influence a building＇s energy efficiency and fire safety, such as bigger or smaller glass areas, building material thermal inertia, and the use of sustainable solutions such as green roofs. In this work, a methodology for integrating energy efficiency and fire prevention in green buildings is presented. A case study comparing a full glass skin and a building with 40% window size is considered. Also, the methodology permits modifications for obtaining a safe and energy efficient building.

Explore the Practice and Application of Nursing Safety and Quality Management

Objective： Explore the practice and application of safety care management and quality management at work. Methods： Establish and improve the nursing management system, safety assurance and quality improvement through the development of clinical nursing assessment standards, supervision, inspection and evaluation of the hospital based nursing quality management to ensure the compliance of the basic quality indicators; raised the nursing quality,to improve with the basic pattern, we prefer both the long and short-term goals, implement and guide the nursing quality, to improve project implementation, quality management training and assessment. Results： Through the implementation of the management of nursing safety and nursing quality, hospital comprehensive nursing quality and service satisfaction has increased significantly. Conclusion： Implementation of nursing safety management and nursing quality management, which ensure the nursing quality of hospital-wide surveillance, improvement and implementation of nursing quality and service satisfaction improved to play a positive role in promoting. Through increased management, nursing quality management more standardized and institutionalized procedures, and enhanced the quality of nurses＇ awareness and sense of competition, play an enhanced role in the promotion of the service concept of ＂patient-centered＂, improve the nursing comprehensive quality, and create a safe and comfortable medical and rehabilitation environment.

Some Remarks on the TKIP Key Mixing Function of IEEE 802.11i

Temporal key integrity protocol （TKIP） is a sub-protocol of IEEE 802.11i. TKIP remedies some security flaws in wired equivalent privacy （WEP） protocol. TKIP adds four new algorithms to WEP： a message integrity code （MIC） called Michael, an initialization vector （IV） sequencing discipline, a key mixing function and a reeying mechanism. The key mixing function, also called temporal key hash, de-correlates the IVs from weak keys. Some cryptographic properties of the substitution box （S-box） used in the key mixing function are investigated in this paper, such as regularity, avalanche effect, differ uniform and linear structure. Moen et al pointed out that there existed a temporal key recovery attack in TKIP key mixing function. In this paper a method is proposed to defend against the attack, and the resulting effect on performance is discussed.