改进ZL113-Y的铸造性能

优化ZL113Y铸造铝合金锭的化学成份范围和熔铸工艺，提高铸造性能弥补压铸技术的不足，解决用ZL113Y铸造铝合金压铸的摩托车曲轴箱爆裂漏油问题。     

魏桥铝电第四条熔铸生产线建成投产

日前,山东魏桥铝电有限公司第四条熔铸生产线建成投产,标志着魏桥铝电四条熔铸生产线全部建成投产,形成80万吨铝合金扁锭生产能力,为后续的热连轧、冷轧生产线全线贯通提供坯料保证。     

铝合金熔铸技术新进展

从熔铸设备、熔体净化、测氢技术、铸造技术四个方面，介绍了当前国内、外铝合金熔铸技术新进展。指出了国内铝加工熔铸技术发展方向，对改善国内铝合金熔铸水平提供了有益的参考。     

用电解铝液生产6061铝合金扁锭的熔铸工艺

结合6061铝合金的特性和熔铸难点,在其化学成分优化的基础上,探讨了炉料添加顺序和电解铝液的转注方式、固液比的选择、熔体的预精炼和精炼方法、晶粒细化剂添加方法、在线除气及除渣方法,制定了6061铝合金扁锭的铸造工艺参数,实现了用电解铝液生产高品质6061铝合金扁锭的目的。     

山东省铝合金熔铸技术现状及发展趋势

本文对山东省铝合金熔铸技术现状与当前先进的熔铸技术相对照，认为山东省铝合金行业应该依靠科技进步、引进先进设备与技术，注重科技信息的开发利用和新产品开发，以改善其技术装备，提高技术水平。     

一种超大规格铝合金板材的制造方法

正专利申请号:2016108652638公布号:CN107881444A申请日:2016.09.29公开日:2018.04.06申请人:北京有色金属研究总院本发明公开了一种超大规格铝合金板材的制造方法。该制造方法的主要步骤包括:铝合金熔铸,制成铝合金锭坯;将制成的铝合金锭坯进行均匀化热处理;对铝合金锭坯热轧,制成铝合金板材;对铝合金板材进行单级或分级固溶处理,随即以平均冷却速度V1将铝合金板材由T0温度点缓冷至临界转变温度T1,随后以平均冷却速率V2     

4004铝合金大规格扁锭熔铸工艺研究

介绍了4004变形铝合金大规格扁锭特点用途、熔铸工艺,特殊的变质工艺,熔铸过程中关键技术操作,4004铸造工艺参数控制,切片制取及铸锭检测。     

5052铝合金大规格扁锭热顶铸造实践

简要介绍了自行设计的大规格热顶结晶器的基本结构,以及用该结晶器在5t级熔铸机组上单块铸造400x1320规格5052铝合金扁锭的情况。结果表明采用热顶方式铸造大规格扁锭是可行的。     

48万吨轧制用铝合金扁锭熔铸生产线的工艺设计

本文从轧制用铝合金扁锭项目的提出规划、厂房及平面布置、工艺技术提资、总体方案、产能计算及主要工艺设备的选型及性能保证、扁锭熔铸生产线的工艺路线设计、工艺设备的有机组合、辅助工艺设备的选配、公辅设施配套等多方面提出了考量与见解。     

用电解铝液生产8150铝合金扁锭的熔铸工艺

介绍了8150铝合金的特点、各元素的作用、合金扁锭的质量要求以及控制难度,通过配备料、电解铝液除碱、固液比选择、合金熔炼与精炼、化学成分优化、铸造工艺参数合理搭配以及在线除气除渣与晶粒细化等方面,探讨了采用电解铝液直接生产铝合金扁锭的短流程熔铸工艺。     

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)     

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.     

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.     

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.     

Craniometaphyseal and craniodiaphyseal dysplasia, head and neck manifestations and management

Mechanical allodynia (MA) following hand injury is a well-documented clinical problem. The purpose of this pilot study was to examine the relationship between hand MA and the upper limb tension test (ULTT). The ULTT mechanically stresses the neural structures from the C5/6/7 neural foramina to the median nerve distally. This study examined 29 subjects with unilateral hand MA before and after a 2-week neural self-mobilization programme. There was a significant difference between the subjects' affected and unaffected sides when tested using the ULTT, both in reproduction of symptoms and in reduced range of motion of the ULTT. Following the self-mobilization program, there was an improvement in the range of the ULTT, and subjects reported a reduction in their symptoms. Complete recovery was not obtained in all cases. The results of this study suggest that the ULTT is a useful tool both in assessment and treatment of subjects with hand MA.     

Intralesional and topical chemotherapy and immunotherapy

This article covers the principles and applications of radiation therapy in horses. The goal in treating tumors by irradiation is tumor control with minimum treatment complications. Various treatment techniques are available to achieve this goal. The prognosis depends on many factors such as the extent and location of the tumor, tumor type and tumor cell proliferation. Radiation therapy is a very effective treatment modality for equine tumors but logistical reasons limit its impact in equine oncology.