延长锰硅合金矿热炉出铁口寿命的初步探讨

阐述了锰硅合金矿热炉出铁口损坏的机理。有针对性的采用了一些维护措施，延长了出铁口的使用寿命，改善了炉况，提高了产量，降低了生产成本，获得了一定的经济效益。     

控冷电磁站搬迁方案的改进

通过大量的调查研究，查清了电磁站内渗漏水的缺陷，提出了解决方案和具体操作方法，改变了原定的搬迁方案，不仅彻底地消除了缺陷，还节约了大修费，缩短了工期，为生产创了可观的效益。     

抓斗吊车常见故障与解决措施

分析了20 t桥式抓斗起重吊车常见故障及原因,采取了相应的解决措施,从根本上杜绝了吊车的常见故障、节约了备件、降低了生产成本、减轻了维修人员劳动强度及提高了企业的经济效益.     

ZDRH-2000智能集中润滑系统在435m~2烧结机上的应用

邯钢435m2烧结机采用了ZDRH-2000智能集中润滑系统克服了传统润滑的弊端;降低了能源的消耗;减少了备品备件的消耗;大大减少了设备日常维护的工作量;提高了设备生产效率;降低了生产成本。     

民主革命时期中国共产党农业政策对政局的影响

民主革命时期,中国共产党在充分调研基础上制定的农业政策使其社会动员能力发挥到极致,成功地调动了占中国人口绝大多数的农民的政治斗争热情,巩固了中国共产党政权的政治基础;其农业政策调动了农民的生产积极性,发展了农业生产力,保证了战争条件下的军粮民食供给,奠定了革命胜利的经济基础;其农业政策改变了农村阶级力量对比,颠覆了传统农村社会秩序,完成了农村社会秩序的重建,莫定了新民主主义革命胜利的社会基础,最终夺取了全国政权.     

焙烧炉天然气燃烧自动控制系统的研究与应用

介绍了炭素焙烧炉燃烧系统的改造,新型控制系统的功能介绍、使用效果和效益分析,通过改造真正实现了清洁生产,达到了节能效果,改善了工艺水平,提高了产品质量,降低了生产成本,提高了生产效率,改善了工作环境。     

变频器在4#空分油泵控制系统上的应用

叙述了天铁动力厂4#空分系统辅助油泵应用EV2000变频器控制系统的过程,对运行中出现的溢油、油压波动不稳等故障现象原因进行了分析,提出了改进方案.改进后消除了故障现象,实现了闭环控制油泵的转速和启停,减小了对电机和电网的冲击和振动,提高了设备的可靠性,延长了电机使用寿命,保障了生产的顺利进行.     

高热区水冷保护技术的应用

分析了水冷保护技术在加热炉出炉辊道的应用，大大降低了工人的劳动强度，减少了事故检修时间，降低了材料、备件消耗，取得了可观的经济效益，为生产顺行、高产提供了有力的设备保障。     

TRT顶压控制系统及其安全性的研究与优化

介绍了天钢1~#TRT顶压控制系统,对现有的顶压控制系统进行了分析,在原有差压调节模式的基础上增加了顶压调节模式,将实际操作改为差压调节与顶压调节两种互选模式,提高了系统的发电效率;对旁通阀组的控制进行了优化,优化后极大地提高了系统的安全性,保证了炉顶压力的稳定,延长了设备的使用寿命,产生了较高的经济效益。     

小铁山矿充填工艺的应用优化与发展

本文针对小铁山矿充填系统设计及生产实际中存在的问题,通过充填工艺的改进和参数的优化,提高了充填接顶率,保证了充填质量,确保了安全生产,降低了矿石的损失和贫化,避免了西部充填频繁爆管的发生,降低了充填成本,提高了矿山的经济效益,保证了矿山的持续、稳定发展。     

Latchkey children and susceptibility to peer pressure: An ecological analysis.

Data on adolescents' after-school experiences and their susceptibility to peer pressure were derived from surveys administered to a heterogeneous sample of 865 adolescents in Grades 5–9. Consistent with the findings of previous studies, the results show that Ss who reported home after school were not significantly different from those who were supervised by their parents at home during after-school hours. However, when a 2nd sample of latchkey children (n?=?594) was studied to include greater variation in after-school experiences, Ss who were more removed from adult supervision were found to be more susceptible to peer pressure to engage in antisocial activity. Ss who were home alone were less susceptible to peer pressure than are those who were at a friend's house after school, and those who were at a friend's house, in turn, were less susceptible than were those who describe themselves as "hanging out." Moreover, latchkey Ss whose parents knew their whereabouts and those who had been raised authoritatively were less susceptible to peer influence than were their peers, even if their afternoons were spent in contexts in which adult supervision was lax and susceptibility to peer pressure was generally high. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sulfur distribution in bacteriorhodopsin from multiple wavelength anomalous diffraction near the sulfur K-edge with synchrotron x-ray radiation

Estimates of variance components for test day records in an animal model that considered multiple traits over multiple lactations were calculated using REML methodology. Test day records were classified into 11 periods within first and later lactations. Missing ancestors in the relationship matrix were classified in genetic groups. Data were collected from Costa Rican dairy farms. Estimates of components for total and additive genetic variance were clearly heterogeneous during the lactation. Heritabilities for traits in later parities were slightly higher than those for traits in first parity. Heritabilities were highest for records of midlactation. Phenotypic and genetic correlations for adjacent test days were close to 1. Phenotypic correlations were lower than genetic correlations. Heterogeneity of variances during the lactation suggests the adequacy of the multiple-trait test day model to describe milk yield during the lactation. When missing ancestors were allocated to a single base population instead of genetic groups, the estimates of residual variance were lower, and the estimates of genetic variance and genetic correlations were higher. When standardized records were used instead of actual test day records, the estimates of residual and total variance were lower, and the estimates of genetic variance were higher. Consequently, estimates of heritability and genetic correlations were also higher. Use of standardized data obtained by interpolation procedures is not advised for estimation of genetic variance components in a test day model.     

Learning mathematics from procedural instruction: Externally imposed goals influence what is learned.

Do externally imposed achievement goals influence what children learn from procedural instruction? Third- and 4th-grade children's goals were manipulated toward either learning or performance. All children were then taught a procedure for solving mathematical equivalence problems (e.g., a?+?b?+?c?=?a?+?_). Children who were given learning goals were initially more likely to gain conceptual knowledge from the procedural lesson than were children who were given performance goals. After a 2-week period, however, children who were given performance goals exhibited the same conceptual gains as children who were given learning goals. Both initially and after the 2-week period, children who were given either goal were more likely to extend their knowledge beyond the taught procedure than were children who were not given goals. External sources such as teachers and parents may have the potential to foster children's learning by shaping children's goals. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Taking care of the elderly: the unmentioned abuses

A total of 10,427 diarrhoeal stool specimens were cultured for Vibrio cholerae between 1992 and 1997. The isolation rates were 2%, 2.6%, 6.7%, 7.08%, 0.9% and 2.6% in the years from 1992 to 1997 respectively. Till 1992, Vibrio cholerae 01 ogawa was the predominant strain. In 1993, 81.3% of the isolates were of 0139 Bengal strain and the rest were V. cholerae 01. From 1994 to 1997, V. cholerae 01 ogawa was the predominant strain and there were no isolation of 0139 strain. The predominant phage type in 1992 and 1993 were T2 and T27 thereafter. Most Vibrio cholerae strains were sensitive to tetracycline, gentamycin, netromycin, norfloxacin and furazolidine. Strains were resistant to cotrimaxozole till 1996, but were 100% sensitive in 1997. Strains were sensitive to chloramphenicol till 1993 but acquired resistance thereafter.     

The gradual threshold model of ambivalence: relating the positive and negative bases of attitudes to subjective ambivalence

Eighty subjects viewed and visually imagined upright or rotated alphanumeric characters and later judged whether test characters were previously seen or imagined (reality monitoring). Identification and test characters were presented verbally or visually. When characters were identified and tested verbally, source confusions (misjudging a seen character as "imagined" and vice-versa) were infrequent and were comparable for rotated and upright characters. When characters were identified and tested visually, source confusions were more frequent and were influenced by character rotation. Memories for imagined characters were especially susceptible to source confusion. Also source confusions for seen characters increased when characters were rotated. These results are consistent with the proposal that increasing sensory similarity between perceived and imagined items increases source confusion and that perceived rotation generates cognitive operations similar to those generated when the subject imagines a character rotated.     

A clinical study of Thai patients with spondyloarthropathy

Eighty-eight Thai patients (61 males and 27 females) with spondyloarthropathy (SpA) were studied. Their mean age and mean duration of the disease were 25.97 and 3.34 years respectively. In 16 cases the disease first appeared before the age of 16 or had juvenile onset. Eleven cases were ankylosing spondylitis (AS), 9 were juvenile AS (JAS), 20 were Reiter's syndrome (RS), 4 were juvenile RS, 14 were psoriatic arthritis (PsA), 27 were undifferentiated SpA (uSpA), and 3 were juvenile uSpA. Peripheral arthritis, especially oligoarthritis of the lower extremity joints, was the most common form of arthritis in all groups, except for PsA, where polyarthritis was common. Back pain and bilateral sacroiliitis were commonly seen in JAS and AS. Enthesopathy was not uncommon. Extra-articular manifestations were more common in RS patients. Acute inflammatory eye diseases were seen in 45 per cent of AS and 66 per cent of RS cases. In general, the clinical features of Thai patients with SpA were similar to those reported in other countries in Asia and the west.     

Ctenocephalides felis flea infestation in horses

The horses were in two stables: in the first stable they were kept together with sheep and in the second stable they were kept together with goats. All horses in both stables were diagnosed as being infested with the cat flea Ctenocephalides felis felis. Foals were severely infested, whereas adult horses were only moderately infested.     

Hormone replacement and menopausal symptoms following hysterectomy

Hormone replacement therapy (HRT) is recommended for most women who experience surgical menopause following hysterectomy/oophorectomy for noncancerous conditions; it is also commonly prescribed for postmenopausal women. Beginning in 1992, 1,299 women undergoing hysterectomy in 28 hospitals throughout Maryland were interviewed prior to hysterectomy and were subsequently followed over a 2-year period. Interviews included questions about HRT use and symptoms associated with menopause. The majority of the women (66 percent) were white, 55 percent had a high school education or better, 49 percent were obese (body mass index > or =27.3), and 11 percent were postmenopausal. Over 40 percent of premenopausal women underwent bilateral oophorectomy. At 3 months posthysterectomy, 89 percent of these women were on HRT; this figure dropped to 85 percent at 24 months. Among postmenopausal women, 50 percent were on HRT both at 3 months and at 24 months posthysterectomy. Among premenopausal women who had unilateral oophorectomy, 21 percent were on HRT at 3 months, increasing to 35 percent at 24 months. Among premenopausal women who had no ovaries removed, 5 percent were on HRT at 3 months, increasing to 13 percent at 24 months. There were few within-group differences between HRT users and nonusers, except that among postmenopausal women, HRT users were younger and more likely to be white and had higher income and educational levels. Women who were postmenopausal or who underwent bilateral oophorectomy were less likely to have hot flashes if they were on HRT, but women with 0-1 ovary removed who were on HRT were more likely to have hot flashes than those not on HRT. Black women were significantly more likely to experience hot flashes than were white women, independent of HRT status and weight. Obese women were on HRT at approximately the same rates as nonobese women but were significantly more likely to have hot flashes, even when analyses controlled for HRT and race.     

Clinical efficacy of milbemycin oxime in the treatment of generalized demodicosis in adult dogs

Thirty adult dogs with chronic generalized demodicosis were treated with oral administration of milbemycin oxime (0.52 to 3.8 mg/kg of body weight, q 24 h). Results of skin scrapings were used to determine whether administration of milbemycin should be continued or discontinued. Dogs that were free of clinical signs of demodicosis 12 months after administration of milbemycin was discontinued were considered cured. Sixteen dogs were cured, 5 dogs were never cleared of mites, and 9 dogs were cleared of mites, but relapsed after administration of milbemycin was discontinued. Adverse effects of milbemycin were rare and transient.     

What are we teaching about lifting and transferring patients?

Parents' perceptions of how they were told that their child has special needs were examined. Thirty-nine families on the Isle of Wight completed a structured interview. Participants formed two groups. The first group comprised of 23 families who had a child aged from birth to 5 years with special needs. In the second group there were 16 families who had a child aged between 15 and 20 years with special needs. Parents were asked about their perceptions of how their child's special needs were disclosed, their satisfaction with how they were told and what improvements they would have liked. Differences between the two cohorts were examined, and changes in how services were perceived were investigated. Overall, parents in the group with younger children were more satisfied about the way in which they were told that their child had special needs than those with older children. Implications for service delivery and future research are considered.