三峡库区高切坡破坏模式分析及防护对策

受三峡水库蓄水影响,大量基础设施工程重建而形成了大量的高切坡,暴露出日益增多的地质灾害隐患.以湖北省宜昌市某高切坡为例,采用现场地质调查、工程经验类比和力学计算等手段,结合高切坡的地形地貌、地质结构及构造、地层岩性、岩体风化等特征,分析了该高切坡可能的破坏模式主要有整体滑移、局部剥落掉块、块体滑移、水砂流冲蚀、风化球滚落等.稳定性计算结果显示,桩号K0+000～0+040、K0+214～0+280、K0+420～0+642段,在暴雨工况下该段坡面稳定性较差,不满足规范要求;桩号K0+040～K0+214、K0+280～0+420段平面滑移计算安全系数小于1.35,安全储备不够.针对分析结果分段采用格构、锚喷治理措施,同时辅以排水、护脚墙及植被恢复等,形成安全、经济、绿色边坡.

地铁直流杂散电流干扰埋地金属管道的防护与研究

针对目前埋地金属管道受到地铁直流杂散电流干扰现状,简述地铁杂散电流干扰对管道安全运行产生的安全隐患,指出了目前地铁杂散电流对管道腐蚀防护措施存在的弊端,根据研究和大量模拟试验重新定义了杂散电流防护概念,有针对性地提出了新的防护措施,利于推动国内埋地金属管道防护技术的发展。

水轮机磨蚀防护技术研究进展

磨损、空蚀及其他破坏耦合作用是水轮机常见的破坏形式,在过流部位进行涂层防护是提高抗磨蚀能力的有效方法之一。简述了过流部件磨蚀等破坏的机理及其影响因素,并综述了过流部件耐磨蚀涂层技术的研究进展,评述了不同类型涂层的技术特点,通过金属熔覆技术、抗撕裂聚氨酯材料以及综合防护措施的应用案例阐述了该领域取得的进展,并展望了未来的发展趋势。

鼻出血的处置方法

问:大夫,我最近经常感到困倦、浑身软弱无力、恶心、腹胀、食欲不佳。家里人劝我去医院检查,医生说我患的是“贫血”。经医生追问病史,发现是因慢性鼻出血(已有10几年的病史)引起的,让我到耳鼻喉科做进一步的检查。请问:鼻出血是怎样引起的?发生鼻出血该如何处置? 山东 张广智 答:鼻出血是耳鼻咽喉科常见的急症之一,它不是一种独立的疾病。

An investigation into the occupational protection status of clinical nursing staff exposed to anti-tumor drugs

Objective:To investigate the occupational protection status of clinical nursing staff vocationally exposed to anti-tumor drugs.Methods:A self-designed questionnaire was used to survey 180 clinical nursing staff vocationally exposed to anti-tumor drugs.Results:Recognition of the need for protection and dependent occupational protection behaviors were very poor in clinical nursing staff vocationally exposed to anti-tumor drugs.The management of the occupational protection of clinical nursing staff vocationally exposed to anti-tumor drugs was also seriously underdeveloped.Conclusion:There is deficiency in the understanding and related protection practices of clinical nursing staff vocationally exposed to anti-tumor drugs in our hospital.The protection measures currently employed in medical practice are inadequate in virtually every aspect considered.It is recommended that all clinical nursing staff should receive full occupational protection training in these matters.The training must raise nursing staff's awareness of the need for occupational protection and standardize their occupational protection behaviors to conform to "best practice" models.These "best practice" models should be quickly established and all staff made cognizant of them forthwith.In addition,where occupational protection systems are already in place,they should be improved to come into line with the new "best practice" models instigated.

Peripherally inserted central catheters in critically ill patients-complications and its prevention:A review

Peripherally inserted central catheter(PICC)is extensively used in critical care settings,because it plays a vital role in providing safe central venous entry.However,PICC is associated with several complications,which should be detected to shorten the duration of patients'improvement,reduce health care cost,and lessen the incidence of various PICC-related complications.Therefore,this study aimed to outline current literature on PICC procedures,potential complications,and measures for prevention.Understanding evidence-based guidelines regarding insertion technique,early detection of complications,and care bundle of PICC is significant in complication prevention.Implementation of education,training,and appropriate multidisciplinary approaches on PICC care among nurses and caregivers is the key to preventing complications.Thus,the strict care of indwelling PICC lines,the targeted and reasonable PICCassociated complication prevention,and nursing care have a major clinical significance in reducing the occurrence of potential PICC complications.

关于会计信息系统中的数据库安全分析

随着网络技术的不断发展,会计信息系统中的数据库安全问题也日益突出。数据库作为数据、信息的主要存储方式,其安全性直接影响到会计信息系统的使用。本文首先从主文件、事务文件和临时文件,阐述了会计信息信息系统中的数据库。然后从身份识别、存取控制、备份恢复控制等方面,论述了会计信息系统数据库的安全技术。最后,审视实际现状,从系统设计、保护措施及安全意识等方面,阐述了会计信息系统数据库控制中所要注意的问题。本文旨在强化会计信息系统中的数据库认识,并提出切实有效的防护措施,以提高会计信息系统中数据库的安全控制。

室内装饰工程安全文明施工专项方案

一.安全文明施工目标安全施工目标:不发生人身死亡事故(零死亡率),不发生重大施工机械设备损坏事故,不发生一般或重大火灾事故,不发生一般或重大垮(坍)塌事故。文明施工目标:深圳市安全生产文明施工优良样板工地为确保现场周围公共区域正常工作环境不受干扰。