泰钢炼铁系统工艺优化与技术进步

近几年来,泰钢围绕炼铁高产、优质、低耗、长寿方针,通过在混合料中添加烧结强化剂、推行低水低碳厚料层烧结法、采用低SiO2高还原性烧结生产新工艺等,提高烧结矿质量,并通过提高焦炭质量、优化炉料结构等提高精料水平;引用先进设备、技术,强化高炉操作等,优化炼铁工艺,各项经济技术指标不断提高,使高炉利用系数、综合焦比等达到全国同类型企业先进水平。     

提高钢铁产品出口退税率对钢铁原料市场的影响

不锈钢、高速钢、合金钢、合金镍条出口退税提高有利合金市场。 2009年3月27日，财政部、国家税务总局发布了《关于提高轻纺、电子信息等商品出口退税率的通知》，明确从2009年4月1日起提高纺织品、服装、轻工、电子信息、钢铁、有色金属、石化等商品的出口退税率，其中涉及部分钢铁、有色金属、合金材料等，     

谈计算机多媒体在音乐欣赏课中的优势

用电脑、多媒体取代钢琴、录音机、录像机、CD机等传统教学工具,一举可以多得.本文从音像资料播放快捷方便、提高学生对音乐的理解能力、提高课堂教学效率、提高老师的工作效率等方面阐明了音乐欣赏课运用计算机多媒体辅助教学的优势.     

青钢高炉提高喷煤量实践

通过改造原煤仓下煤管、提高磨辊压力,使制粉能力提高12～18t/h;通过控制煤粉粒度、水分、温度等,改善了煤粉性能;又通过提高氮气压力、提高喷吹罐压力、降低补气流量、广喷匀喷等技术手段,使各高炉喷煤量提高2t/h,达到了降低燃料成本的目的。     

提高大型加热炉炉顶寿命的探讨

提高炉顶寿命是一项比较复杂的工作,它主要包括:设计、选材、施工、烘炉、生产和维护等环节。本文着重从施工方法等方面探讨提高炉顶整体寿命的措施。     

提高热轧窄带钢成材率的措施

为降低热轧窄带钢的生产成本,提高企业的生存能力,宣钢小型轧钢厂热带车间采取了一系列攻关措施,从降低烧损,减少切头、切尾,减少小卷带试生产,降低轧制过程中的甩钢及设备、操作调整等原因造成的废材等多方面的入手,通过加强管理、严格操作工艺、实施技术改造提高、提高设备精度等措施,使得成材率由98.2%提高到98.68%,完成了预期指标。     

提高硫酸烧渣金回收率技术改造实践

对处理硫酸烧渣原氰化炭浸生产工艺流程进行了技术改造。通过采用预处理消除铁、铜、铅等杂质对氰化炭浸的影响、提高入浸矿浆细度等措施,使金的回收率从50%提高到86%,提高了企业的经济效益。     

改善高炉喷吹煤粉燃烧性能研究

在实验室就高炉喷吹用无烟煤中加入烟煤、助燃剂、富氧、提高风温等手段来改善煤粉的燃烧性能进行了研究.结果表明,在喷吹无烟煤中加入烟煤、助燃剂、富氧、提高风温等均能提高煤粉的燃烧性能.大量富氧效果最为明显,比较而言,混合喷吹,辅以富氧及加入助燃剂能够显著提高煤粉的燃烧性能.     

505m3高炉使用高硫块矿的脱硫实践

对崇钢505m3高炉配吃高硫块矿后出现的问题进行了分析。保持合理炉型、提高上部煤气利用、适当提高炉渣碱度、保证焦炭质量条件稳定（尤其是降低焦炭中硫含量）、加强筛分改善人炉粒度组成、选择适宜的送风参数保持炉缸长期均匀活跃、提高工长操作水平等是提高脱硫效率的主要手段。通过选择恰当的原燃料配比、适当的风口面积、重视高炉日常调剂操作、提高焦炭质量等手段应对。     

505m~3高炉使用高硫块矿的脱硫实践

对崇钢505 m3高炉配吃高硫块矿后出现的问题进行了分析。保持合理炉型、提高上部煤气利用、适当提高炉渣碱度、保证焦炭质量条件稳定(尤其是降低焦炭中硫含量)、加强筛分改善入炉粒度组成、选择适宜的送风参数保持炉缸长期均匀活跃、提高工长操作水平等是提高脱硫效率的主要手段。通过选择恰当的原燃料配比、适当的风口面积、重视高炉日常调剂操作、提高焦炭质量等手段应对。     

Sensitivity of Streptococcus agalactiae and Staphylococcus aureus to antibiotics in the Slovak Socialist Republic in the year 1974

In 1974, the State veterinary institutes in the Slovak Socialist Republic studied the sensitivity of 4420 strains of Streptococcus agalactiae and 1056 strains of Staphylococcus aureus to eight antibiotics. The strains were isolated from milk samples obtained from dairy cows suffering from mastitis. 100 per cent of the strains of Streptococcus agalactiae was sensitive to ampicillin, 99.23% to erythromycin, 98.70% to oxytetracycline, 93.02% to bacitracin, 90.77% to chloramphenicol, 41.97% to penicillin, 12.39% to neomycin, 9.73% to streptomycin. As to the strains of Staphylococcus aureus, 98.68 were sensitive to chloramphenicol, 98.50% to ampicillin, 97.92% to erythromycin, 94.98% to oxytetracycline, 93.85% to neomycin, 92.67% to bacitracin 87.50% to streptomycin, and 46.24% to penicillin. The results are discussed in relation to the use of antibiotics in the treatment of mastitis in dairy cows.     

Why Oedipus and not Christ?: a psychoanalytic inquiry into innocence, human sacrifice, and the sacred--Part II: The numinous and spiritual dimension as a metapsychological perspective

The ancient Greek myth linking the images of the labyrinth and the Minotaur provides an allegory for Melanie Klein's conception of the archaic Oedipus complex as well as a vivid illustration of Winnicott's notions of object usage and the 'subjective object'. The labyrinth is suggestive of mother's body as the first area for an infant's exploration and putative sadistic conquest. The Minotaur, in turn, suggests the infant's unconscious phantasies about the content of mother's body, namely such projective identifications onto that body as the paternal penis and the 'internal babies'. Further, the heroic dynamic personified by Theseus in the myth of the labyrinth metaphorically signifies what is here proposed as a developmental line that involves the courage to do a number of things, including to become, to create, to seek, to explore, to do, to challenge, to undertake risks, to accept, to rescue, to initiate, to think, to know and to realize. The Minotaur can thus be thought to serve as a universal subjective signifier for an 'Object of Challenge', which, if not successfully dealt with by the ego-development of the infant, transforms that default into the 'Object of Nemesis'. Ultimately, this myth of mastery speaks to the psychoanalytic process itself as well as casting light on the transformative aspects of sexual intercourse as a personal healing ritual.     

Transmitter-induced calcium responses differ in astrocytes acutely isolated from rat brain and in culture

Glial fibrillary acid protein (GFAP)-positive astrocytes isolated from the cerebral cortices of 3-10-day-old rats frequently showed increased intracellular Ca2+ concentration responses to L-glutamate and glutamate analogues. However, few of the acutely isolated cells responded to ATP, and no such cells responded to serotonin [5-hydroxytryptamine (5-HT)]. The same cell that failed to respond to ATP or 5-HT often responded to glutamate. Culturing acutely isolated cells in media containing horse serum decreased Ca2+ responses to glutamate but increased the responses to ATP and induced responses to 5-HT. In primary cultures prepared from the cerebral cortices of 1-day-old rats and cultured in horse serum, fewer of the cells responded to glutamate, but almost all cells responded to ATP and 5-HT. The lack of or limited response to, 5-HT or ATP in the acutely isolated cells seems unlikely to be due to selective damage to the respective receptors because acutely isolated GFAP-negative cells showed responses to ATP, several different proteases and mechanical dissociation yielded cells that also responded to glutamate but not to ATP, and exposure of primary cultures to papain did not abolish Ca2+ responses to several transmitters. The responses of the acutely isolated cells to glutamate but limited or lack of responses to ATP and 5-HT also correspond to what has been seen so far for astrocytes in situ. Thus, the present studies provide direct evidence that some of the receptors seen in primary astrocyte cultures may reflect a response to culture conditions and that, in the context of the relevant information so far available, acutely isolated astrocytes seem to reflect better the in vivo state.     

Neonatal murine B lymphocytes respond to polysaccharide antigens in the presence of IL-1 and IL-6

Unlike adults, neonates are unable to respond to polysaccharide Ags, making them especially vulnerable to pathogenic encapsulated bacteria. Since the Ab response to polysaccharides in adult mice requires certain cytokines, it was hypothesized that neonatal murine B cells may be competent to respond to such Ags, but may fail to do so due to a deficiency of cytokines. Neonatal splenocyte cultures, which were otherwise unresponsive to trinitrophenyl (TNP)-Ficoll, a haptenated polysaccharide Ag, mounted an adult-like Ab response when supplemented with IL-1. However, IL-1 failed to induce such a response to TNP-Ficoll when purified B cells were used instead. Although IL-6 alone did not induce a response in whole spleen cells or purified B cells from neonates, it synergized with IL-1 in inducing purified neonatal B cells to respond to TNP-Ficoll. The avidity of the cytokine-induced neonatal anti-TNP Abs was comparable to that of Abs made by adult splenocyte cultures. One effect of IL-1 may be at the level of clonal expansion, since it induced neonatal B cells to proliferate in response to anti-IgM, which was further enhanced by IL-6. The spontaneous secretion of IL-1 by neonatal splenocytes was below the detection limit, while adult splenocytes secreted 30.8 +/- 5.2 U/ml, which is of the same order of magnitude as what was required to stimulate neonatal B cells to respond to TNP-Ficoll. Thus, the neonatal unresponsiveness to polysaccharide Ags could be due to the inability of a non-B cell population resident in the neonatal spleen to secrete sufficient quantities of IL-1.     

Ethical issues in the practice of child psychotherapy.

Reviews literature relevant to the ethics of child psychotherapy, paying particular attention to the setting of the community mental health center. It is felt that the American Psychological Association's (1977) Ethical Standards of Psychologists, if applied to children, does more to create ambiguity than to answer questions. Although in the past, the right of informed consent pertaining to confidentiality, testing and diagnosis, and treatment have often been denied to children, current legal and ethical trends seem to grant greater rights to children in these areas. It is suggested that the role of the child psychotherapist should be expanded to include not only the practice of traditional child psychotherapy but also the roles of child advocate, information provider to children and the community, social/political/legal change agent, and researcher. An advisory committee with responsibility to deal with ethical dilemmas is supported. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Distinct regions of bacterial flagellar switch protein FliM interact with FliG, FliN and CheY

The FliG, FliM, and FliN proteins of the bacterial flagellar motor are believed to interact with one another to form the switch complex, which in turn is thought to interact with one of the chemotaxis proteins, CheY. In particular, FliM appears to be an intermediary between CheY and FliG: the current model suggests that CheY, when phosphorylated (CheY-P), binds to FliM and produces a conformational change in FliM that is propagated to FliG. The result of these interactions is to induce clockwise rotation of the flagellar motors and tumbling of the cell. Various genetic and biochemical studies have provided evidence that the switch proteins associate with each other and that CheY-P binds to FliM. Here, we have used affinity blotting to obtain direct evidence of interaction between Salmonella typhimurium FliM and FliN, FliM and FliG, and FliM and CheY-P. We have also examined the ability of various FliM deletion and truncation mutant proteins to bind to FliN, FliG, and CheY-P. From these data, we conclude that distinct regions of the FliM protein bind to each of these other proteins. We propose a model in which the N-terminal region of FliM binds to CheY-P, the middle region of FliM binds to FliG, and the C-terminal region binds to FliN.     

Health care reform in Chile

This is a document presented to the Chilean Academy of Medicine by the Health Minister, the economist Carlos Massad, First of all, he refers to the general context of the reform, that he considers a process and not a breakpoint. Afterwards, he enumerates the change task: a) to generate awareness of the change and to convert health in a State issue; b) to adequate programs to population's new health profile; c) to install new management instruments in the health system; d) to decentralize decisions and to promote the participation of beneficiaries; e) to establish incentives and to flexibilize the Health System and f) to introduce correctives to private health insurance. He believes that Chile must drift to a economical protection system for universal and solidary health events. The additional assurances that people wants to buy, must be delimited.     

Toxicity of nitrogen dioxide: an introduction

Many questions, needed to advance our understanding of the mechanism of injury from high-level NO2, remain unanswered to date. This is partly due to the limited interest in the toxicity of high-level exposures, and partly due to the public pressure and interest to study the effects of low- (environmental) levels. However, the effects of exposure to high-level NO2 are of great interest to the military since high levels of NO2 may be found in combat situations. It is also important to the civilian section in occupational settings where accidents may occur as in silo filler accidents. To fill this gap in knowledge, the Department of Respiratory Research, Division of Medicine at Walter Reed Army Institute of Research took the initiative and convened a panel of experts in a symposium to discuss in depth the effects of exposure to high-level nitrogen dioxide. The symposium goals were to address the issues beginning from the chemistry of NO2 molecule, to the dosimetry of its uptake (isolated lung), to the biological effects of exposure in vivo in small animals (rats), large animals (sheep), and finally in the most relevant species, humans.     

Projections of the nucleus of the basal optic root in pigeons (Columba livia) revealed with biotinylated dextran amine

The nucleus of the basal optic root (nBOR) of the accessory optic system is known to be involved in the analysis of the visual consequences of self-motion. Previous studies have shown that the nBOR in pigeons projects bilaterally to the vestibulocerebellum, the inferior olive, the interstitial nucleus of Cajal, and the oculomotor complex and projects unilaterally to the ipsilateral pretectal nucleus lentiformis mesencephali and the contralateral nBOR. By using the anterograde tracer biotinylated dextran amine, we confirmed these projections and found (previously unreported) projections to the nucleus Darkshewitsch, the nucleus ruber, the mesencephalic reticular formation, and the area ventralis of Tsai as well as ipsilateral projections to the central gray, the pontine nuclei, the cerebellar nuclei, the vestibular nuclei, the processus cerebellovestibularis, and the dorsolateral thalamus. In addition to previous studies, which showed a projection to the dorsomedial subdivision of the contralateral oculomotor complex, we found terminal labelling in the ventral and dorsolateral subdivisions. Individual fibers were reconstructed from serial sections, and collaterals to various nuclei were demonstrated. For example, collaterals of fibers projecting to the vestibulocerebellum terminated in the vestibular or cerebellar nuclei; collaterals of fibers to the inferior olive terminated in the pontine nuclei; many individual neurons projected to the interstitial nucleus of Cajal, the nucleus Darkshewitsch, and the central gray and also projected to the nucleus ruber and the mesencephalic reticular formation; collaterals of fibers to the contralateral nucleus of the basal optic root terminated in the mesencephalic reticular formation and/or the area ventralis of Tsai; neurons projecting to the nucleus lentiformis mesencephali also terminated in the dorsolateral thalamus. The consequences of these data for understanding the visual control of eye movements, neck movements, posture, locomotion, and visual perception are discussed.     

论我国会计委派制度试行中存在的问题及对策

会计委派制度有利于防止国有资产流失,保证会计信息的真实可靠性,强化会计核算和监督的力度,但在实施过程中存在委派会计人员不能充分发挥其职能作用,委派会计制度流于形式,委派会计人员的后续管理不完善等问题,必须加强对会计委派制度的重视程度,明确委派会计的任职条件和具体职责,建立委派人员的业绩考评制度和后续教育制度。