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1.
宫毅 《金川科技》2010,(4):29-32
金川集团公司化工厂20kt无水亚硫酸钠在生产过程,其干燥、包装系统的粉尘污染问题,自投产以来一直成为化工厂的老大难问题。虽经化工厂多次改造,但其效果不尽人意,其粉尘污染仍极为严重。本文通过对其粉尘污染源现场调查,应用其相关理论、原理对其粉尘污染产生以及其干燥、包装系统存在的问题进行分析。针对该系统生产中粉尘污染问题,拟定系统改进和其粉尘污染控制的具体措施。同时论述所拟定的〈20kt无水亚钠干燥、包装系统改进与其粉尘污染控制措施〉的经济性、合理性、可行性、必要性。  相似文献   

2.
通过实地调查了解豫西农村夯土民居的现状,分析其优点和存在问题.本着低技术、低成本原则,运用现代生态、建筑设计原理,对其宜居性、力学及抗震性、耐久性、节能性、艺术性以及新能源利用等方面进行技术改造,达到使其再生的目的,同时对其进行环境影响评价.  相似文献   

3.
关汉卿剧曲为其在曲学史上赢得了不朽的地位,其散曲虽然成就不若剧曲,却也独标高格.本文从写景、避世、女妓、才人、闺情等方面对其题材做以分类梳理,兼述其写作之心态,加深我们对关汉卿的了解.  相似文献   

4.
采用粉末冶金技术制备了鳞片石墨含量分别为2%、3%、4%、5%、6%的铜基粉末冶金摩擦材料并测定其力学性能;使用MM-1000Ⅲ型摩擦磨损试验机测试其摩擦磨损性能;使用扫描电镜观察其摩擦表面及冲击断面的微观组织形貌并分析其摩擦磨损及冲击断裂机理.结果表明:随鳞片石墨含量的增加,材料的冲击韧性、布氏硬度、抗拉强度下降,材...  相似文献   

5.
王寂为金源一代重臣,又是金代中期的重要作家,其诗、词、文的成就都很可观,被后世称为"大定、明昌文苑之冠".但<金史>没有为其立传,其生平事迹在金代文献中的记载也较为简略,导致后世对他的研究十分有限.文章结合他本人的诗词文以及相关资料,对其生卒年、宦海浮沉及思想作一考辨.  相似文献   

6.
介绍了ХН67ВМТЮ时效强化镍基高温合金的用途、成分、物理性能、机械性能,给出了其冶炼、热加工、冷加工、热处理、机加工、焊接等工艺参数,评述了其主要元素Mo、W、A1、Ti、C和微量元素B、Ce、Mg、Ca、S、P的作用,叙述了其显微组织结构和相变规律。  相似文献   

7.
李渔的创作与其三个有代表性的人生阶段有着密切的关系,经历了清初战乱时期、归隐山林时期和"卖赋以糊其口"时期。李渔的人生经历与其创作密切相关,了解其人生经历,能指导和启发学术界对其作品的深入研究。  相似文献   

8.
针对水泥稳定碎石混合料这一新型的筑路材料具有整体性好、水温稳定性好、强度高、刚度大等特点分析了影响其强度和稳定性的主要因素,阐述了其施工工艺流程和现场质量的控制方法,论述了其基层主要病害产生的原因和防治措施。  相似文献   

9.
针对0.6 mm以下薄规格冷轧钢卷的性能特点,用工业实验方法测定其冷、热点温度、升温速率及时间,确定其罩式炉退火工艺,并对存在的延伸率低、粘连缺陷进行工艺优化,使其理化性能符合技术要求。  相似文献   

10.
林麟 《冶金丛刊》2004,(3):47-48
互联网对青少年的成长发展起着促进作用的同时,也对其人格发展带来负面影响,影响其价值观的形成、品德行为使其异常,诱发一些心理问题,甚至出现人格的变异。  相似文献   

11.
In order to maximise the reduction of pig iron cost in an ironmaking process, and at the same time ensure the output and quality of the pig iron, a design and optimisation system for the charging ingredients and structure in an ironmaking system was established using metallurgical theory. The system includes six modules, namely, sinter metallurgical performance testing and analysis, sintering burdening design, sinter component and property prediction, blast furnace burdening design, blast furnace batching calculation and ironmaking system burden optimisation. Based on actual production, testing and material balance theory, the system integrated these modules on VB and MATLAB using a series of intelligent algorithms, such as the BP neural network, multiple objective linear programming, genetic algorithms and so on. As a result, the optimum burden composition and structure of the sinter and blast furnace that satisfied all the constraint conditions could be obtained. Standing as a pinnacle of the global ironmaking production, the system can design and optimise not only the sintering burden, but also the blast furnace burden. Compared with the traditional production testing and hand calculation in the ironmaking system, the project can greatly reduce the production risk and greatly increase the calculation accuracy. Industrial application shows that the system is especially beneficial to reduce the ironmaking cost and at the same time ensure the output and quality.  相似文献   

12.
For counseling settings, research suggests that softness, personalization, and order might affect the experience and the perceived expertness, trustworthiness, and social attractiveness of the therapist. This article discusses exploratory studies on college students' perception of the counseling office environment and whether the likely client experience was associated with the softness/personalization and order of the office. As stimuli, the studies used 30 color photographs of psychotherapists' offices viewed from the client's perspective. After obtaining ratings of the characteristics of each office, we obtained ratings from different groups of students of the quality of care and comfort expected in each office (Study 1) and how qualified, bold, and friendly the therapist in the office would be (Study 2). Additional studies examined the likelihood of choosing a therapist based on the office, and the first thought or feeling that came to mind about the office, the therapist, and the patient experience. There were strong correlations in response between groups (by whether they had experienced therapy; their level in school; their gender; and their major, location, and school size). The quality of care, comfort, therapist boldness, qualifications of the therapist, and the likelihood that one would choose a therapist based on the office improved with increases in the office's softness/personalization and order. Friendliness improved with increases in softness/personalization. The office choices, open-ended responses, and reported reasons for the ratings confirmed the importance of softness (comfort) and order. Research should test longer term exposure and behavior. (PsycINFO Database Record (c) 2011 APA, all rights reserved)  相似文献   

13.
The best location in the inner solar system for the grand observatories of the 21st century may be the Moon. A multidisciplinary team including university students and faculty in engineering, astronomy, physics, and geology, and engineers from industry is investigating the Moon as a site for astronomical observatories and is doing conceptual and preliminary designs for these future observatories. Studies encompass lunar facilities for radio astronomy and astronomy at optical, ultraviolet, and infrared wavelengths of the electromagnetic spectrum. Although there are significant engineering challenges in design and construction on the Moon, the rewards for astronomy can be great, such as detection and study of Earth‐like planets orbiting nearby stars, and the task for engineers promises to stimulate advances in analysis and design, materials and structures, automation and robotics, foundations, and controls. Fabricating structures in the reduced‐gravity environment of the Moon will be easier than in the zero‐gravity environment of Earth orbit, as Apollo and space‐shuttle missions have revealed. Construction of observatories on the Moon can be adapted from techniques developed on the Earth, with the advantage that the Moon's weaker gravitational pull makes it possible to build larger devices than are practical on Earth.  相似文献   

14.
针对矿热炉配料系统工艺流程复杂、可靠性及性价比要求高的特点,系统利用Modbus通信和工业以太网技术构建了由上位监控层、下位控制层和现场设备层组成的总体网络架构,设计出以S7-1200PLC为核心的稳定、高效和经济实用的分布式控制系统。通过合理的硬件、软件和监控界面设计,有效解决了生产效率与配料精度之间的矛盾,实现了称量、配料自动化。该系统自投入使用以来,性能稳定,工作可靠,具有较高的性价比,能够满足实际生产需求,达到了预期设计的目标。  相似文献   

15.
张福明 《中国冶金》2021,31(11):1-8
高炉炼铁的物理本质是铁素物质流在碳素能量流的驱动和作用下,按照设计的流程网络和运行程序,经过一系列复杂物理化学冶金反应过程,将铁矿石转变/转化为液态生铁的过程。碳素不仅是铁矿石还原过程的能量驱动源,也是生成铁水的重要非金属合金元素。面向全球“碳达峰”“碳中和”的发展形势,传统高炉必须在已有工艺技术的基础上进行改进、优化和创新,努力实现低碳化、高效化、绿色化、智能化等多重目标。提出了未来高炉在实现高效低碳的同时,必须从功能设计、装备设计和流程设计入手,遵循节能减排、低碳绿色新的发展理念,通过工艺优化、结构优化和技术开发,使传统高炉更加适应于炉料结构和燃料结构的变革,减少焦炭消耗和对其依赖,在碳素能量输入降低的条件下,形成新的耗散结构体系,进而实现高炉低碳高效炼铁的工程演进和技术发展。  相似文献   

16.
Presents the Guidelines on Multicultural Education, Training, Research, Practice, and Organizational Change for Psychologists. These guidelines reflect the continuing evolution of the study of psychology, changes in society at large, and emerging data about the different needs of particular individuals and groups historically marginalized or disenfranchised within and by psychology based on their ethnic/racial heritage and social group identity or membership. These guidelines reflect knowledge and skills needed for the profession in the midst of dramatic historic sociopolitical changes in US society, as well as needs of new constituencies, markets, and clients. The specific goals of these guidelines are to provide psychologists with (a) the rationale and needs for addressing multiculturalism and diversity in education, training, research, practice, and organizational change; (b) basic information, relevant terminology, current empirical research from psychology and related disciplines, and other data that support the proposed guidelines and underscore their importance; (c) references to enhance ongoing education, training, research, practice, and organizational change methodologies; and (d) paradigms that broaden the purview of psychology as a profession. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

17.
This paper identifies and analyzes the open-policy trend of the Chinese construction industry, which is characterized by trade liberalization, the underlying principle of the World Trade Organization (WTO). Compared to the construction industries in the United States, Japan, and the U.K., the construction industry in China is less developed in its legal framework, industrial structure, technological level, and international market share. To develop a competitive construction industry, the Chinese construction industry needs not only to accommodate appropriate international practice, but also to adapt and adopt it according to the market environment in China. A model to enhance the performance of the Chinese construction industry is proposed. The model consists of six modules: defining government’s role, opening up the construction market and establishing a competitive mechanism, promoting design institutes’ services and empowering professional bodies, encouraging technological innovations, upgrading employees’ educational level, and adopting multiprocurement routes. Recognizing China’s recent accession to the WTO and the attendant boost to its economy and industry development, the paper gives a timely evaluation of the post-WTO Chinese construction industry and proposes a model for its development. The model may serve the needs of academics, Chinese construction policymakers, construction enterprises, design institutes, and foreign contractors.  相似文献   

18.
张殿英  刘伟 《山东冶金》2011,(5):115-117
采用电感偶合等离子体分析技术,通过优化电感偶合等离子体光谱仪的工作参数、分析条件,选取仪器最佳分析参数和分析条件,以HNO3、HF、HClO4处理样品,稀盐酸浸取,完成硅铝钡、硅钙钡和硅钙钡铝铁合金中Al、Ba、Fe、Ca、Mn、Cu、Cr、Ni、P9种主次量元素成分的同时测定,方法的回收率达96%~104%,相对标准偏差〈1.5%,能够满足快速分析的要求。  相似文献   

19.
20.
Reviews the book, Attachment in psychotherapy by David J. Wallin (see record 2007-05421-000). This intellectual and clinical tour-de-force is what we have been waiting for: a book that is on the one hand a coherent, creative, thoughtful, and remarkably integrated view of contemporary psychoanalysis, with attachment, and attachment processes, at its core, and on the other a reflection on our daily, complex, work with patients. The book has three broad aims: first, to ground the reader in attachment theory and research, second, to broaden the reach of attachment theory by building bridges to other aspects of contemporary psychoanalytic theory and science, and third to apply this broader, deeply psychoanalytic, clinical attachment theory to understanding the dynamics of an individual patient and the dynamics of clinical work. This book should be essential reading for anyone interested in contemporary psychoanalysis. Few writers have the ability to write so directly and clearly about complex science and theory; his scholarship and reach are extraordinary. This book is also a book for therapists at all levels of experience. Throughout every section of the book, Wallin writes about his work with patients, about the therapeutic process, about the therapeutic situation, and about the therapeutic relationship, in all its complexity. In the end, he creates a truly contemporary vision of human development, affect regulation, and relational processes, grounded in the body and in the brain, and in the fundamental relationships that make us who we are, as therapists, as patients, and as human beings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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