钢铁企业节能潜力分析

概述了我国钢铁工业的能耗现状,对钢铁工业的节能潜力进行了分析,提出了钢铁工业的节能思路,并且认为作为节能实施主体钢铁企业的节能工作应从管理节能、结构节能和技术节能三方面着手.最后用系统节能的观点分析了钢铁企业的节能潜力.指出系统节能是“十二五”期间乃至更长时期内钢铁企业节能工作的重要指导思想.     

完善冶金节能标准体系 助力钢铁企业节能降耗

_、概述钢铁工业是国民经济的重要基础产业,同时也是能源资源消耗密集型产业。我国钢铁工业能效水平逐年提高,同时仍存在生产工艺结构不合理、不同企业之间节能管理水平差距大、节能技术创新难等问题,依然有较大节能潜力。近些年,钢铁工业从技术节能、管理节能和工艺节能等方面加大了节能标准的制修订力度,为行业节能降耗提供了保障。     

中国钢铁工业节能现状与发展前景分析

系统论述了我国钢铁工业在发展规模和节能减排方面取得的巨大进步,通过分析行业节能历史进程,归纳了行业节能规律,预测了下一步的节能发展趋势.从钢铁流程工艺特点、余热余能资源、用能管理、节能技术等方面,全面分析了我国钢铁工业节能的现状与潜力,指出了今后钢铁工业节能的发展方向、途径和目标.     

钢铁工业能耗现状和节能潜力分析

目前,中国钢铁工业总能耗占全国总能耗的16.3%,钢铁工业总产值占全国GDP的3.2%.说明钢铁工业足能耗大户,对国民经济贡献率不足太高.这也要求钢铁工业必须加大技术升级和结构优化,转变增长方式,努力提升钢铁工业效能,促进中国钢铁工业向强同转变.钢铁工业节能减排是提升钢铁工业效能的重点,"节能减排"已成为我国的国策.钢铁企业要从"国家要我节能",转变为"我要节能",完成钢铁企业应当承担的社会责任和义务.我们要科学分析钢铁工业用能结构和节能潜力,提出节能工作要点和具体节能措施,促进钢铁工业节能减排健康发展.     

中日钢铁工业节能历程之比较

引用大量数据资料比较了中日两国钢铁工业的各个节能阶段的耗情况，节能措施及效果，分析了我国钢铁工业能耗水平与日本差距大的原因。     

中国钢铁工业节能减排现状及对策

为促进我国钢铁工业节能减排工作的进行,通过和先进国家比较分析的方法对我国钢铁工业节能减排现状进行了研究,研究发现我国钢铁行业耗能总量约占总能耗的18%,吨钢综合能耗为629.93 kg标煤,重点企业能耗水平已接近先进国家水平,CO2排放总量为世界钢铁工业的51%.我国节能技术的开发应用有很大空间,建议提高电炉炼钢比例,...     

钢铁工业节能减排的历史重任

重点研究了我国钢铁工业节能减排的目标,钢铁工业能耗、污染物排放的现状,我国钢铁工业与国际先进水平的差距及原因,钢铁企业联合重组取得的新进展,主动减排二氧化碳、二氧化硫气体及我国钢铁工业未来的发展方向.     

钢铁厂的节能与仪表

在我国钢铁工业耗能仅次于发电而居于第二位,钢铁厂的节能是当前一项重要任务。本文简述了钢铁工业耗能的特点和自动化仪表在钢铁厂节能中的地位及潜力后,针对国内仪表在节能方面的几个薄弱环节,提出了相应的对策和措施。     

炼铁系统节能--我国钢铁工业21世纪技术进步的重点

21世纪我国实现工业化的经济发展的第二步战略目标,需要强大钢铁工业的支撑。资源和能源短缺是我国钢铁工业发展的主要制约因素之一。炼铁系统能耗在钢铁生产能耗中占有较大比例,必须以炼铁能耗降低作为我国钢铁工业系统节能的重点。提出了未来15年炼铁系统的节能目标。     

钢铁厂要重视能源转换的功能

中国金属学会理事长翁宇庆对我国钢铁工业节能减排的发展形势进行了分析，并对钢铁工业未来节能减排的主攻方向进行了阐述。     

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.     

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.     

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.     

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)     

Reasoning and food and contamination.

Examines strategies that are used to reason about food and contamination. In Exp 1, Ss refrained from choosing a substance that had been given a "poison" label when the intent of the labeler was ambiguous or malicious but preferred this substance when a rationale was provided that dispelled the implication that there once might have been contaminants present. Exp 2 was designed to compare the effects of safety on conditional reasoning in food and food-irrelevant contexts. When the safety issue was relevant to food in the form of contamination, Ss were most likely to use formal logic in reasoning. A similar pattern of responses was found in Exp 3 on tasks for which Ss' ratings of their experience of contexts were matched for plausibility, experience, and danger. Results are discussed in terms of an adaptive constraint that facilitates rationality in reasoning within the food domain (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。