oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 2 )

2019 ( 437 )

2018 ( 8232 )

2017 ( 8468 )

Custom range...

Search Results: 1 - 10 of 371283 matches for " 王玉杰 "
All listed articles are free for downloading (OA Articles)
Page 1 /371283
Display every page Item
土岩爆破作业安全的模糊评价

武汉理工大学学报 , 2004,
Abstract: ?把模糊数学综合评价方法引入到土岩爆破作业安全评价中来,建立了土岩爆破作业安全评价因素体系。在确定各评价因素权重和隶属函数的基础上,通过多层次评价方法,对整个作业系统的总体安全进行了定量评价,并指出了该方法具有定量评价的优点,但是仍受专家的主观影响。该评价方法为今后的土岩爆破的安全评价提供了参考依据
高耸建筑物拆除爆破事故树系统分析

武汉理工大学学报 , 2003,
Abstract: ?将关联矩阵和层次分析法引入高耸建筑物拆除爆破事故树分析,用实例说明了事故树系统分析法的原理、算法和步骤,建立事故树层次结构模型,进行层次重要度总排序,从而可为爆破事故的预测和预防措施的制定提供了科学依据。
药卷型静态破裂剂的研究

武汉理工大学学报 , 1991,
Abstract: ?本文介绍了一种新型静态破裂剂,它以卷成型,不仅使施工操作更加简单、能够适用于各种方向的炮孔装药,且能使膨胀压力提高10―15%以上,缩短了开裂时间。文中对喷孔现象提出了新的解释。
超声心动图诊断小儿先天性主动脉瓣及瓣下狭窄
Echocardiographic Diagnosis of Congenital Valvular Aortic Stenosis and Subvalvuar Aortic Stenosis in Children
 [PDF]

唐秀, 廉一, 吴清
Asian Case Reports in Vascular Medicine (ACRVM) , 2013, DOI: 10.12677/ACRVM.2013.21002
Abstract:
目的:探讨超声心动图诊断小儿先天性主动脉瓣及瓣下狭窄的准确性。资料与方法:分析12例术前诊断先天性主动脉瓣及瓣下狭窄患者的心脏彩超图像,并与手术结果对比分析,总结其诊断要点。结果:经手术证实,12例患者中3例为主动脉瓣下狭窄,6例为主动脉瓣狭窄,3例为主动脉瓣下狭窄合并主动脉瓣狭窄。本组患者除2例术前超声诊断与术中探查不符外,其余均与手术结果相符。结论:主动脉瓣及瓣下狭窄的鉴别诊断对于外科有重要意义,超声心动图诊断小儿先天性主动脉瓣及瓣下狭窄具有较高的准确性。
Purpose: To assess the diagnostic accuracy and features of Echocardiography on congenital valvular aortic stenosis (VAS) and subvalvuar aortic stenosis (SVAS) in children. Methods: The echocardiographic characteristics of 12 patients diagnosed VAS and SVAS were analyzed and compared with results of operation results. Results: 3 of total 12 patients were diagnosed subvalvuar aortic stenosis, 6 were diagnosed valvuar aortic stenosis, 3 subvalvuar aortic stenosis cases were associated with valvuar aortic stenosis. The echocardiographic characteristics of VAS were correspondent to the results of operation findings in 12 patients except 2 patients had mismatch of preoperative diagnosis and intraoperative findings. Conclusion: The differential diagnosis of VAS and SVAS is important for surgery. There is high accuracy of echocardiography in the diagnosis of VAS and SVAS in children.
絮凝–电动法处理钻孔灌注桩废弃泥浆的试验研究
Experimental Study on Electric Flocculation Treatment Method for Waste Mud in Bored Pile
 [PDF]

张钦喜, ,
Mine Engineering (ME) , 2015, DOI: 10.12677/ME.2015.33014
Abstract: 钻孔灌注桩施工过程会产生大量废弃泥浆,其比重稠度大、体系稳定、pH值高,短时间处理掉难度很大。本文对废弃泥浆的特性,进行了对建筑废弃泥浆进行无害化处理的相关研究。本文对废弃泥浆基本组成及初步絮凝破胶进行试验研究,在此基础上对废弃泥浆体系进行电动脱水试验研究。
Bored pile construction process will produce a lot of waste mud, characterized by the proportion of high consistency, system stability, high pH value, and difficulty of short time dispose. According to the characteristics of the waste mud, related research is carried out on harmless treatment of waste mud in building. The paper has researched on basic composition of waste mud and primary flocculation and gel breaking. Then, we research electric dewatering on waste mud structure.
黑臭河涌治理工艺流程及技术体系研究—以佛山市为例
Research on Technological Process and Technology Architecture about Management of Black-Odor River—A Case of Foshan City
 [PDF]

, 肖羽堂,
Water pollution and treatment (WPT) , 2016, DOI: 10.12677/WPT.2016.42007
Abstract:
近年来,随着城市的扩张及工业的发展,大量有机和无机的污染物不断排入城市河道,使水体的营养物质负荷量不断增加,中国许多城市和城郊河道景观效果随之变差,造成严重的经济和生态环境问题。加强水资源保护,改善城市河道水环境,修复和构建生态河道已引起广大环保、生态人士的热切关注。通过对城市水环境市场现状的调查研究,总结了黑臭河道治理工艺流程及技术体系。开展我国河道、浅水湖泊富营养化的修复与控制技术开发与产业化,对保护我国水环境富营养化的有效控制,开展规模化工程治理具有重要意义。
In recent years, with the expansion of the city and the development of industry, a large number of organic and inorganic pollutants discharge into urban river, which make the capacity of nutrient increase in water. At the same time, landscape effect of many urban and suburban rivers becomes worse, which has caused serious economic, ecological and environmental problems. Reinforce of the protection of water resources, improvement of the environment of urban river and restoration and construction of ecological river have caught attention of environmental protection and ecological personages. We summarize the technological process and technology architecture about management of black-odor river by means of making an investigation of current situation of market about urban water environment. Developing the repair and control technology development and industrialization about urban river and eutrophication of shallow lakes is of great significance to protect the effective control of eutrophication of water environment in China and carry out large-scale project management.
矿区新农村生态环境建设研究与实践
,
煤炭工程 , 2013,
Abstract: 近半个世纪以来,由于人口的迅猛增长和科学技术的飞速发展,人类的生存环境遭到破坏,面对这样的问题,我们不得不思索我们的建设方式。本文章探讨了煤炭资源型新农村的特点,结合邯郸磁县艾口社区的建设,详细介绍了建造中运用的生态技术。
农药残留预测模型可靠性的检验与改良
,张大克
应用生态学报 , 1999,
Abstract: 对农药残留预测模型可靠性问题进行了分析。根据矩阵的条件数理论,提供了检验预测模型可靠性的方法,基于岭回归和广义岭回归估计理论,建立了对不可靠预测模型改良的方法。最后通过氰戊菊酯在甘篮上的残留动态预测,对所建改良方法进行了检验,结果表明,预测模型的精度得到了大幅度提高.
关于教育职员制的几点思考
张伟,
科技进步与对策 , 2003,
Abstract: 随着高等教育规模的不断扩大和人事分配制度改革的不断深化,教育职员制的正式实施已显得尤为重要。就教育职员制的含义、特点、存在的问题及解决的办法进行了探讨。高校教育职员制人事分配制度人事管理工资待遇干部管理体制
气相色谱法测定丙烯氧化脱氢芳构化产物
,赵清越
分析化学 , 1987,
Abstract: 丙烯催化氧化脱氢芳构化反应的产物较为复杂。主要产物是苯,还有六种以上的付产物。了解这些产物的分布,对提高反应的选择性是十分必要的。
Page 1 /371283
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.