型钢连轧机组平／立转换轧机简介

介绍了世界上三种主要的平／立转换短应力线轧机的结构和特点。     

连轧中型平立转换轧机主传动创新与应用

介绍了宣钢型棒厂连轧中型生产线平立转换轧机主传动改造实践,将平立转换轧机主传动由共用一台电机的传动方式改为平/立减速机分别由电机驱动的独立传动方式,从而有效根除了原立轧机滑块磨损严重及频繁烧轴承的故障,实现型钢与圆钢的共线生产。     

平立转换轧机基础的数模振动分析

通过对某钢厂连轧中型钢厂平立转换减速机改造工程设计实例的介绍,提出了平立转换轧机电机置于轧机基础顶部的数模振动分析,可供其他工程参考。     

三切分工艺在平-立交替轧机上的开发与应用

介绍了φ16×3切分工艺在平-立交替布置轧机上的开发与应用。通过合理设计K6、K5、预切分、切分孔型、成品轧机前后立交导槽及相应的导卫,解决了出成品轧机后钢筋三线差以及切分后3根坯料在成品轧机前后顺利实现“水平面-垂直面-水平面”的转换等关键技术问题,成功开发了三切分工艺且用于批量产品生产,产品性能及尺寸全部符合要求。     

专利信息

一种立-平可逆粗轧机组导卫装置 专利号：ZL200720067790．0 专利权人：上海梅山钢铁股份有限公司 发明（设计）人：陈应耀 杜家明 贺应广 本实用新型涉及一种轧钢钢板输送导向装置,特别涉及一种立-平可逆粗轧机组导卫装置。主要解决带钢发生跑偏时极易造成机架内废钢的技术问题。本实用新型的技术方案为：一种立-平可逆粗轧机组导卫装置,包括一对圆弧形导卫板,分别与水平轧机牌坊入口本体、立辊轧机牌坊出口本体以及立辊轧机引出辊道辊轴承座本体焊接在一起,水平筋板和竖直筋板加焊在圆弧形导卫板与水平轧机牌坊入口本体、立辊轧机牌坊出口本体以及立辊轧机引出辊道辊轴承座本体之间,从而对导卫板进行加固。     

平—立可换轧的研制

本文开发出了国内第一套平－立可换轧机，并对该轧机的结构性能特点和使用情况作了阐述说明。     

平─立可换轧机的研制

本文开发出了国内第一套平─立可换轧机，并对该轧机的结构性能特点和使用情况作了阐述说明。     

节能型棒材平立转换轧机回转缸液压阀台的开发与应用

论述了控制棒材平立转换轧机回转缸的一种节能型液压阀台的研发与应用.该阀台可以用较低压力的液压站供油,但是能够使棒材平立转换轧机回转缸得到工艺要求的高工作压力.即不需要因棒材平立转换轧机回转缸高工作压力的要求而提高轧区液压站系统压力,也节省了专用液压站,还简化了通常情况下回转缸动作时液压站繁琐的操作程序.能够减少能耗、减少设备投资,减少设备维护工作量和环境污染,以及减少运营成本,并满足快节奏生产的需要.     

平/立可转换轧机的结构及其选用

系统介绍了平/立可转换轧机的种类、优缺点和选用原则。     

巴西贝尔戈厂的世界最高速线棒材轧机

世界上最高速线棒材轧机的出口速度达到２７６００ｆｔ／ｍｉｎ＝（ｌｆｔ／ｍｉｎ＝０．３０４８ｍ／ｍｉｎ）。全套设备由１６架平－立粗轧机组和中轧机组以及接续在其后面的含２架预精轧机架和１０机架精轧机组构成。该轧机的计算机系统用控制轧制和冷却温度，无张力轧制，嘬佳剪切尺寸控制和缺陷检测。     

Voices of fear and anxiety and sadness and depression: The effects of speech rate and loudness on fear and anxiety and sadness and depression.

Two studies investigated the role of expressive vocal behavior (specifically, speech rate and loudness) in fear and anxiety and in sadness and depression. In the 1st study, participants spoke about personally experienced fear and anxiety-arousing and neutral events using 3 different voice styles: fast and loud, normal, and slow and soft. In the 2nd study, participants spoke about personally experienced sad or depressing and neutral events using the same 3 voice styles. In both studies, the participants' highest levels of subjective affective and cardiovascular (CV) arousal occurred when they spoke about the emotional events in a mood-congruent voice style: fast and loud in the case of fear and anxiety, and slow and soft in the case of sadness or depression. Mood-incongruent voice styles canceled the heightened levels of CV arousal normally associated with these negative emotions. The voice-style manipulation had no significant effect on the participants' levels of CV arousal during the neutral discussions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Synthesis and analysis of mixed chlorinated-fluorinated dibenzo-p-dioxins and dibenzofurans and assessment of formation and occurrence of the fluorinated and chlorinated-fluorinated dibenzo-p-dioxins and dibenzofurans

Despite the use of multimodal therapy, higher-grade glioma is still uniformly fatal in the adult population. There is a considerable difference between the length of survival in each given patient, even within the same tumor type and malignancy grade group, suggesting that there are factors that might differentially influence outcome. To identify such factors, 107 patients with anaplastic or malignant glioma were retrospectively investigated. Clinical parameters and paraclinical data on the p53, mdm2, and EGFR genes at the DNA or protein level were evaluated by univariate analysis and Cox proportional hazards regression modeling. Kaplan-Meier survival estimation demonstrated that immunohistochemical positivity for mdm2 protein in patients with anaplastic astrocytoma or with glioblastoma multiforme was associated with a shorter survival time (p = 0.02). P53 gene mutations and immunopositivity for the epidermal growth factor receptor (EGFR) protein were not significantly related to poor prognosis. The Cox proportional hazards model revealed immunohistochemical positivity for p53, mdm2, or for both of them, the presence of postoperative irradiation, and the extent of surgical resection of tumor to be variables significantly associated with prolonged survival. EGFR overexpression, age over 60 years, and Karnofsky performance score below 40 points did not significantly shorten survival time. In conclusion, the present study identified immunohistochemically detected mdm2-protein overexpression as a statistically significant negative prognostic parameter in patients bearing anaplastic or malignant glioma. Association analysis of variables revealed a possible correlation between mdm2 and p53, which is also consistent with the biological interaction mode of both proteins in vivo.     

Sexuality and aging--usual and successful

BACKGROUND: As aging research increasingly reflects an effort to dissociate true time-driven changes from those that can be improved, sexuality in later life remains largely unexplored. Several problems are evident. There is a lack of normative data, a lack of a conceptual framework relating to the biology, psychology, and sociology of sex, and an attitudinal resistance that obscures the entire topic. METHODS: We conducted a three-part instructional series on major topics involved with sexuality and aging. We surveyed our group of attendees (n 158, average age 68 for males, 65 for females) before and after the series. RESULTS: A remarkably robust sex life was evidenced by both the men and the women, even until advanced old age. Yet, a substantially decreased involvement was reported from 10 years earlier. Despite current activities, people of both sexes wished they were participating even more than they currently were. Impotency was identified as the major negative feature for the men; relationship problems were for the women. A questionnaire 6 months after the series reported improved sexual attitudes, but no change in sexual activities from the earlier survey. CONCLUSION: Sexuality is a major quality-of-life issue which persists into old age. Our study showed that the usual sexual practices reported by our group were not considered by them to be ideal. The intervention of this instructional series provided improved sexual attitudes but not performance. Additional studies are encouraged.     

Spondylolysis and spondylolisthesis and sports

Spondylolysis and spondylolisthesis occur predominantly in the lower lumbar spine. Besides congenital defects such as predisposition of spondylolysis the correlation between competitive sports activities and an increased incidence of spondylolysis is proved. In early stages, complete healing can be achieved by conservative treatment (abstinence from sports activities for 3 months, orthesis). Persistence of pain, neurologic symptoms and progression of vertebral slipping are indications for operative treatment (reconstruction of the isthmus, dorso-ventral spondylodesis). The exercise tolerance depends on the extent of instability, progression of vertebral slipping and clinical symptoms. The limits of exercise tolerance vary among the individual athletes and require the decision of the physician. Backstroke swimming, abdominal and back muscle strengthening exercises, and types of sport involving smooth movements are advisable. Sports education in school is possible without restriction in patients with stable spondylolysis and in those with spondylolisthesis without unfavourable concomitant factors.     

Larks and owls and health, wealth, and wisdom

OBJECTIVE: To test the validity of Benjamin Franklin's maxim "early to bed and early to rise makes a man healthy, wealthy, and wise." DESIGN: Cross sectional analysis of sleeping patterns in a nationally representative group of elderly people, and longitudinal investigation of mortality. SETTING: Eight areas in Britain (five in England, two in Scotland, and one in Wales). SUBJECTS: 1229 men and women aged 65 and over who in 1973-4 had taken part in a survey funded by the Department of Health and Social Security and for whom data on sleeping patterns, health, socioeconomic circumstances, and cognitive function had been recorded. MAIN OUTCOME MEASURES: Self reported income, access to a car, standard of accommodation, performance on a test of cognitive function, state of health and mortality during 23 years of follow up. RESULTS: 356 people (29%) were defined as larks (to bed before 11 pm and up before 8 am) and 318 (26%) were defined as owls (to bed at or after 11 pm and up at or after 8 am). There was no indication that larks were richer than those with other sleeping patterns. On the contrary, owls had the largest mean income and were more likely to have access to a car. There was also no evidence that larks were superior to those with other sleeping patterns with regard to their cognitive performance or their state of health. Both larks and owls had a slightly reduced risk of death compared with the rest of the study sample, but this was accounted for by the fact that they spent less time in bed at night. In the study sample as a whole, longer periods of time in bed were associated with increased mortality. After adjustment for age, sex, the presence of illness, and other risk factors, people who spent 12 or more hours in bed had a relative risk of death of 1.7 (1.2 to 2.5) compared with those who were in bed for 9 hours. The lowest risk occurred in people who spent 8 hours in bed (adjusted relative risk 0.8; 0.7 to 1.0). CONCLUSION: These findings do not support Franklin's claim. A "late to bed and late to rise" lifestyle does not seem to lead to socioeconomic, cognitive, or health disadvantage, but a longer time spent in bed may be associated with increased mortality.     

深云立交桥梁检测及加固改造

根据深云立交桥梁的检测结果，对该桥目前的整体状况、工作状态，及其使用情况做出综合评价，对桥的病害原因进行了分析，并提出合理的加固方案。     

关于摩尔浓度及其与硬度转换关系问题的讨论

众所周知，国际单位制物质的量采用摩尔(mol)表示，近几年出版的给排水专业书籍，为了与国际单位制接轨，逐渐将摩尔的使用频率不断提高，被给排水技术人员广泛应用的新版给排水设计手册，将表示物质浓度的单位“当量／升”或“毫克当量／升”．改为mol／l或mmol／l，虽然编者对其基本单元定义作了说明，但在实际运用上仍会出现误解，     

《儿子与情人》的语码转换与男女二元对立

劳伦斯小说《儿子与情人》一个鲜明的语言特色就是标准英语和当地方言频繁的语码转换。莫瑞尔用方言来对抗妻子,而妻子坚持用标准英语,偶尔也用方言来讽刺、挖苦丈夫。语码转换反映了劳伦斯男女二元对立的哲学思想。     

抗腐蚀高强耐磨涂料研发与应用

介绍了抗腐蚀高强度耐磨涂料的研制和开发，以及用作柳钢球团回转烘干机刮板保护涂层的应用效果。