高职高专学前教育专业亦学定位的实践与思考

高职高专学前教育专业的办学定位应区别于高师、中职等不同院校的专业办学,其专业办学类型、层次、规模的合理性、科学性符合地方经济发展和行业发展需求,明确专业发展目标和人才培养目标,并进一步深化专业内涵建设,凝练专业特色,做到学前教育专业办学的职业性和师范性、独特性和发展性、区域性和行业性、规模性和效益性、宏观性和具体性、质量和特色的统一.     

数字矿山及其关键技术探讨

“数字矿山”是实时管理和调度矿山全部信息资源、人力资源、生产要素和生产经营活动的巨型信息系统,可分为中央控制系统、生产信息处理系统、综合监测监控信息系统、网络通信保障系统等4大部分。构建数字矿山的核心技术包括数据采集和高速网络传输技术、分布式空间数据库和网络GIS技术、空间数据仓库和空间数据挖掘技术、三维可视化和虚拟现实技术、动态模拟和人工智能技术。     

日本钢铁材料研究的进展

一、绪言钢铁材料可分为纯铁、钢和铸铁三类,在日本国将钢分为普通钢和特殊钢。特殊钢又按其用途和性能分为结构钢、高强度钢、弹簧钢、工具钢、轴承钢、不锈钢及耐热钢等。不论哪一类钢,日本的研制和技术进步都非常显著。本文仅以高强度钢、不锈钢和耐热钢三类为中心,同时考虑与炼钢、轧钢和热处理等生产工艺的关系,介绍该三类钢的研制现状和动向。二、高强度钢     

残余元素对连铸坯和热轧板表面质量的影响

 通过扫描电镜、透射电镜和EDS分析,对残余元素对连铸坯和热轧板表面质量的影响进行了研究。试验结果表明,连铸坯氧化层中存在铜、砷和锡同时富集。热轧板基体层与氧化层界面存在铜、砷和锡富集,基体层铜、砷和锡含量高于氧化层铜、砷和锡含量。铜、砷和锡在γ晶界偏聚和铁优先氧化造成连铸坯中铜、砷和锡富集,加热炉二次加热加剧铜、砷和锡富集,铜、砷、锡向钢基体渗透扩散,恶化钢的塑性,导致中板表面微裂纹缺陷,分析了铜、砷和锡富集相对表面微裂纹的影响机理。     

富氧底吹熔炼处理复杂铜精矿过程中杂质元素的分布与走向

对复杂铜精矿富氧底吹熔炼过程中杂质元素Pb、As、Sb、Bi和Ni的分布与走向进行分析。结果表明,当冰铜品位为45%~50%时,Pb主要分布于冰铜、电尘灰和烟气中,分别占39.95%、22.50%和18.80%;As主要分布于熔炼烟气、电尘灰和熔炼渣中,分别占66.87%、18.13%和7.51%;Sb主要分布于熔炼渣、冰铜和烟气中,分别占58.10%、22.50%和15.07%;Bi主要分布于电尘灰、冰铜和烟气中,分别占37.82%、20.78%和27.58;Ni主要分布于冰铜和熔炼渣中,分别占70.65%和26.44%。     

用旋转圆盘研究溴溶金

据JOM 报道,Pesic和Sergent 利用旋转圆盘法,用Geobrom~(TM)3400作溴原,研究了用溴溶解金。研究的参数是转速,浸出剂浓度、pH、温度、硫酸和盐酸的浓度以及各种阳离子(即铜、铁、锌、铝、锰、钾和钠)和阴离子(即氯离子、溴离子、硫酸根、硝酸根和碘离子)的浓度。根据Lavich 图线和活化能金的溶解受化学反应速率所控制。最高氧化态的铜,铁和锰以及铝、锌、钠和钾对溶金速     

钢材生产中质量问题的溯源与控制

文章主要讨论了钢材生产中质量问题的溯源与控制,包括钢材质量的重要性和研究意义、钢材生产中的常见质量问题、问题源头对质量的影响、质量问题的溯源方法和工具、质量控制的目标和要求、质量控制的手段和方法、质量控制的流程和实施步骤、质量检测和监控技术等方面。通过深入分析钢材质量问题的源头,探讨了溯源方法和工具,提出了质量控制的目标和要求,并详细介绍了质量控制的手段和方法、流程和实施步骤以及质量检测和监控技术等,旨在为钢材生产企业实现质量控制提供参考和指导。     

国际钨和钨合金会议简介

<正> 国际钨和钨合金会议于1992年11月15—18日在美国首都华盛顿附近弗吉尼亚州的阿灵顿城举行(Arlington City),这是由美国金属粉末工业联合会和美国粉末冶金学会发起和组织的。共有10个国家的来自政府部门、工业企业、研究单位和有关大学的一百多名学者、专家参加。这些国家是:美国、加拿大、中国、韩国、澳大利亚、以色列、英国、法国、瑞典和西班牙,基本上包括了世界上主要研究和发展钨和钨合金的国家和     

由铝板应用现状和趋势看镁板发展前景

镁合金板带材目前成为国内外科研机构和生产企业研制、开发和工业化生产的热点.对比同为轻质结构材料且力学性能相近的铝板带材,镁合金板带材目前的生产应用还存在着非常大的差距.通过对目前铝板带材应用领域、应用特点、应用量以及应用趋势的论述和总结,分析了镁合金板带材特有应用和在航空航天、交通运输领域对铝板带材进行金属替代应用的前景.同时,在对几个典型镁合金板带材建设项目进行分析的基础上,结合产品生产工艺技术和市场推广应用,提出了生产线以及加工设备规模化和专业化、工艺技术多样化和借鉴化、生产连续化和低成本化、新上项目平稳和逐期过渡化、生产线工程设计专业化、产品多样化和差异化、板带材深加工协作化和就地化、扩大产品应用以市场需求为推动化等观点和建议.     

ICP-AES法测定锰矿石中的次要元素含量

采用敞开式湿法和高压密闭消化法2种溶样方法,用电感耦合等离子体原子发射光谱法测定了试液中铁、钙、铝、镁、钛、磷、镍、铜和锌含量。考察了溶样方法、基体干扰和共存元素干扰,给出了仪器工作条件、分析线的参考波长和方法的精密度,建立了电感耦合等离子体原子发射光谱法测定锰矿石中铁、钙、铝、镁、钛、磷、镍、铜和锌含量的方法。     

Some fundamentals of B. F. Skinner's behaviorism.

Despite B. F. Skinner's prominence, his impressive written corpus, and the many authoritative presentations by others of his approach to psychology, the fundamentals of Skinner's psychology have never been addressed in any comprehensive manner. In this article, the authors take steps to fill this gap by synopsizing Skinner's written corpus into 12 fundamental points that seem to characterize his behaviorism. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Educators' perceptions of the D.A.R.E. program

This study examines the perceptions of educators about the Drug Abuse Resistance Education (D.A.R.E.) program, based on the results of a statewide survey among 286 fifth and sixth grade teachers and principals. Educators gave their highest ratings to teacher/officer interaction, the role playing exercises, and the graduation ceremony. Ratings of overall program quality and the impact of the program on students were both high. Block regression analysis was used to examine factors predictive of educators' views of D.A.R.E. D.A.R.E. program elements were the most important factors explaining variance in educators' ratings of over-all program quality and program impact on students. Altogether, 54 percent and 38 percent of the variance in both dependent variables were explained. The results are discussed in terms of the important role teachers and principals play as stakeholders in prevention education.     

Racemose angiomatosis. Comments on the article of D.E. Matsko and I.A.Sokolova. Racemose angioma of the nervous system: tumor or developmental defect? Vopr. onkol. 1966. V.42, No.6. p.91-96

Diversion colitis is thought to result from nutritional deficiencies secondary to fecal diversion. Symptoms include hemorrhagic purulent rectal discharge, abdominal pain, and tenesmus. 5-Aminosalicylic acid (5-ASA) and N-butyrate enemas have been reported to help this condition non-spinal cord injury (SCI) patients. We report the case of a 49-year-old C6 ASIA B tetraplegic man who had received colostomy because of intractable ileus 10 years earlier. He presented with a 2-week history of rectal pain and bleeding. Abdominal and rectal examination on admission were unremarkable. Colonoscopy showed a partial stricture 70cm proximally to the rectum. The colonic mucosa appeared granular and friable with evidence of linear ulceration. Histopathologic study was consistent with colitis. The patient developed fever, abdominal distention, and extensive retroperitoneal air after endoscopy, suggesting colonic perforation. He was treated with daily 5-ASA suppository and total parenteral nutrition for the presumed diagnosis of diversion colitis, and intravenous antibiotics for perforated colon. After 6 weeks of treatment with 5-ASA, the patient had decreased rectal pain and bleeding. This experience suggests that diversion colitis may be a cause of abdominal discomfort in SCI patients and that 5-ASA may be used in the management of diversion colitis.     

小方坯连铸机的切割设备

现在采用的小方坯连铸机的切割设备，分为机械剪和火焰切割机，机械剪包括电动机械剪和液压剪，而液压剪又有平剪刃和４５°剪刃之分，火焰切割机则分为有动力传动和无动力传动的火焰切割机，对这些切割设备的结构特点和优缺点均进行了分析介绍。     

Study of the h.c.p.-f.c.c. phase transition in cobalt by acoustic measurements

Acoustic measurements have been performed in the vicinity of the h.c.p.-f.c.c. phase transition in cobalt. The main results are the following: At low frequency (~ 1 Hz), a high transitory internal friction peak is observed. It is shown that this internal friction is a function of T/vT temperature rate, v vibration frequency) but is not proportional to T/v. This behavior is explained in the framework of a recent model based on a Clausius-Clapeyron-like equation expressing the coupling between stress and phase transition; At medium (~5 KHz) and high (~ 20 MHz) frequencies, the transitory internal friction becomes negligible. However, a small peak appears accompanied by an elastic modulus decrease. It is shown that these anomalies are related to the shear modes parallel to the transformation plane. Thus, they might be related to the motion of the partial dislocations composing the h.c.p.-f.c.c. interface.