中厚板辊式淬火机淬火工艺自动控制系统开发及应用

为满足中厚板热处理线高强度板材产品的淬火工艺开发需要,通过构建基础自动化和过程自动化两级控制系统,自主开发出中厚板辊式淬火机淬火工艺控制系统。基础自动化用于满足淬火机的顺序控制、逻辑控制及设备控制功能,工艺过程控制用于实现淬火工艺参数的模型计算及设定,实现了中厚板辊式淬火机淬火过程的自动控制。将该工艺系统用于中厚板淬火工艺开发及生产,淬火后板材平直度及性能指标达到或优于国外同类进口先进设备的工艺技术水平。     

薄规格钢板淬火不平度分析

分析了薄规格钢板在辊压式淬火机淬火时发生瓢曲变形机理以及影响因素,重点从设备精度、加热冷却工艺以及原始板形等方面进行研究,提出了薄规格钢板淬火工艺的关键因素,取得了较好效果。     

不锈钢固溶热处理线自动控制系统的开发与应用

以酒泉钢铁(集团)有限责任公司不锈钢酸洗热处理分厂中厚板固溶热处理线为研究背景,介绍控制系统的结构和配置,阐述燃烧控制、淬火机喷水控制以及全线顺序控制等基础自动化级控制系统的功能及特点,论述固溶炉加热工艺控制、淬火机淬火(固溶)工艺控制和全线过程跟踪等过程控制级系统原理及功能。该热处理线于2010年11月投产,控制系统运行稳定,控制精确,各项指标达到或优于设计水平。     

油罐钢热处理工艺研发及应用

本文介绍了淬火设备、调质原理、调质工艺修改,针对调质油罐钢合格率低的原因分析,通过对淬火水量、速度及淬火温度的修改试验,提高了产品的性能合格率,缩短了产品交货周期。     

厚板辊压式淬火机板型控制分析

厚板辊压式淬火机作为重钢厚板生产中的关键设备,对板材产品的质量以及板型控制等方面有着重要的作用.淬火工艺分为低压段以及高压段两个工艺生产阶段,同时采用分区冷却技术,将整个流程划分为高低压段、热水池、快速过滤器、冷却塔以及清水池水泵站等环节.文章将就厚板辊压式淬火机板型控制过程中出现的问题进行研究,并就如何更好地进行板型控制提一些意见和建议.     

PLC在齿轮淬火机中的应用

本文介绍ＯＭＲＯＮ－ＳＹＳＭＡＣ－Ｃ２０Ｈ型可编程序控制器在齿轮淬火机中的应用及其系统组成与程序设计。该机可靠性高、功能强、操作简便，实现了齿轮淬火机的自动加工。     

100～150mm超厚规格钢板淬火工艺研究

通过系统研究超厚规格钢板淬火工艺,建立超厚规格钢板淬火水量模型,科学合理分配高压段水量,实现有效冷却水量最大化;开发超低淬火速度和负压下量淬火新工艺,创新开发了增加淬火机低压段摆动冷却时间新工艺;完成淬火炉超厚规格钢板加热数学模型工艺与淬火机框架提升极限高度开发,使超厚规格钢板淬火能力得到提升。综合实施后,突破热处理生产线原有设计,成功实现了100~150 mm超厚规格钢板的淬火生产。     

钢轨轨端帽形淬火设计和工艺的研究与应用

讨论了铁路用钢轨轨端帽形淬火的重要性，介绍了一种平移式轨端淬火机以及帽形以感应器与冷却器的结构特点，并对气、水二相冷却剂的应用效果和帽形淬火质量进行了分析和评价。     

高效淬火机过程控制计算机系统

以太原钢铁公司五轧厂淬火机改造为背景，介绍了高效淬火机过程控制计算机系统的构成及其实施方法。该控制控制通过对系统中模型参数和参数的自学习达到对钢板实时跟踪与喷水，从而实现对淬火温度的精确控制。所采取的一系列措施已成功应用于高效淬火机。     

高效淬火机控制系统

介绍太钢不锈热轧厂高效淬火机控制系统，该系统采集控制的点数多达数百个，采用工控机加板卡的形式达到了较高的性能价格比。     

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.     

IQ and ego-resiliency: Conceptual and empirical connections and separateness.

The constructs of intelligence and ego-resiliency are discussed. The personality implications of "pure intelligence" and "pure ego-resilience" were identified. Intelligence (IQ) was indexed by the Wechsler Adult Intelligence Scale-Revised (WAIS—R) and ego-resiliency by an inventory scale. Residual scores measuring "pure intelligence" and "pure ego-resilience" were correlated with the items of the observer based California Q-sort, used to describe participants. Persons relatively high on ego-resilience tend to be more competent and comfortable in the "fuzzier" interpersonal world; persons defined primarily by raw IQ tend to be effective in the "clearer" world of structured work but tend also to be uneasy with affect and less able to realize satisfying human connections. Gender differences exist in the relations of ego-resilience and intelligence and in their adaptive relevance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conserving and retaining equalities and inequalities through observation and correction.

Investigated the effects of modeling and corrective feedback on the conservation of equalities and inequalities, with items spanning 3 stimulus dimensions (length, number, and 2-dimensional space). Ss were 48 kindergartners (24 boys, 24 girls). Brief observation of a model, briefer correction training (joining positive feedback with verbal rule provision), and the combination of observation and correction were all successful in producing learning and, without further training, transfer and retention of conservation. Unlike the controls (who also never correctly answered any equality items), the trained experimental Ss gave evidence of spontaneously generalizing their new learning to a task that required nonverbal behavior to manifest conservation. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

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，