甘肃老豆村金矿床地质特征及成矿机制浅析

老豆村金矿床属破碎蚀变岩型金矿,产于德乌鲁石英闪长岩与老豆村石英闪长斑岩接触带附近。矿床受近南北向断裂构造控制,矿体以脉状、透镜状、豆芽状赋存于这些断裂破碎带中。蚀变以黄铁矿化、毒砂化、硅化、绢云母化等为特征。     

甘肃合作德乌鲁岩体控矿规律及找矿方向

德乌鲁岩体内外接触带为金多金属成矿集中区,主要矿床(点)包括下看木仓、老豆村、吉利、拉不在卡等金多金属矿(点)床及南办、布拉沟铜砷矿点。它们的成矿地质特征基本相似,矿体均产于德乌鲁石英闪长岩侵入岩体内的外接触带,受近南北向断裂蚀变破碎带控制。本文通过对区内矿点控矿破碎蚀变带内部组成的野外调查,对本区成矿控矿特征进行了归纳和总结,在此基础上,进一步提出本区找矿方向。     

甘肃录斗艘金矿床地质特征及成矿机理浅析

录斗艘金矿床属破碎蚀变岩型金矿,产于德乌鲁石英闪长岩与录斗艘石英闪长斑岩接触带附近.矿床受近南北向断裂构造控制,矿体以脉状、透镜状、豆芽状赋存于这些断裂破碎带中.蚀变以黄铁矿化、毒砂化、硅化、绢云母化等为特征.     

甘肃老豆村金矿成矿地质条件及形成机理浅析

甘肃老豆村金矿床位于合作市北东 1 8km ,地处西秦岭海西褶皱带北缘的复杂构造带内 ,金矿体主要产于石英闪长斑岩体内 ,规模不大 ,但品位较高 ,易于采选 ,具有较高的经济价值。通过研究成矿地质条件及形成机理 ,找出成矿规律具有重要意义     

甘肃拉不在卡铜金矿点地质特征及找矿前景

拉不在卡金矿产于海西期德乌鲁石英闪长岩体内,受近南北向断裂蚀变破碎带控制,空间上显示呈等间距分布的基本特征,铜矿主要分布于岩体外接触带,以矽卡岩型为主。本文通过对该区地质特征及控矿特征进行全面的综合分析,进一步提出了该区今后找矿的主要方向。     

苦水泉一带金矿成矿地质特征及找矿标志

本区内含金岩性主要为碎裂岩、碎裂状石英闪长岩(夹褐铁矿化石英脉),矿化主要表现为较强的褐铁矿化、孔雀石化、局部硅化、碳酸盐化及高岭土化。区内金矿体受断裂构造控制作用极为明显,矿体均产于北西向、北东向破碎带及层间裂隙中,断裂的活动为成矿提供了矿液运移的通道和储矿的空间,矿化体展布形态与构造线方向基本一致,因此初步分析本区金矿成矿类型为"构造蚀变岩型"。     

内蒙古桦树沟金矿区成矿地质特征及找矿方向

桦树沟金矿区处于华北地台北缘内蒙地轴中段南缘,太古宙集宁岩群构成区内褶皱变质基底,金矿化受NW、NE向断裂破碎带控制。在面积近15 km2的矿区范围内发现了木匠沟和桦树沟等6个金矿化点,金矿化主体为构造蚀变岩型,其次为石英脉型。根据本区金矿的赋矿地质条件和物化探异常特征,重点分析了桦树沟金矿区的成矿地质特征及控矿因素,并从构造和岩浆活动等方面论述了金矿的成矿地质条件与矿床成因,提出了近NW和NE向构造是本区的重点找矿地带,尤其要注意伴随断裂活动侵入的石英脉和石英斑岩脉,指出了金矿的找矿方向。     

粤西阳春盆地合水金矿区煌斑岩地球化学特征及其成矿意义

粤西阳春盆地合水金矿在空间上与煌斑岩具有密切的联系,金矿化主要产于蚀变的煌斑岩及砂岩的构造破碎带中。岩矿鉴定表明,本区煌斑岩的矿物成分主要由黑云母斑晶及长石组成,属于云煌岩类。云煌岩具有高硅、高钾特征,SiO_2含量平均为56.86%,K_2O含量平均为6.33%,属高钾质粗安岩系列煌斑岩。蚀变煌斑岩与新鲜云煌岩的化学成分对比表明,随着蚀变作用的进行,表现为全碱含量的显著降低和全铁含量的显著增加。蚀变煌斑岩与新鲜云煌岩的微量元素对比表明,在本区的热液蚀变过程中伴随有热液成矿元素的明显富集,其中CuBi-Sb-W-Cd的异常微量元素组合特征可以作为本区金矿化蚀变与找矿的标志性伴生元素组合。区内煌斑岩稀土元素具有总量高,LREE显著富集,HREE强烈亏损的特征,配分曲线为明显的右倾型。本区新鲜云煌岩的Au含量较低,其提供Au来源的可能性较小,但煌斑岩破碎带为成矿提供了十分有利的空间环境。本区的金矿化主要是由后期热液蚀变作用所致,其成因很可能与外围的花岗岩浆活动有关。     

甘肃省西和县安溪沟金矿地质特征及找矿标志

安溪沟金矿位于甘肃省西成矿田铅锌金成矿有利地段。笔者从区域成矿地质背景分析入手,结合矿区地质、物化探异常特征及矿床地质特征,讨论了区内金矿的控矿因素、矿床成因及找矿标志。初步认为,该矿床成因类型为中低温热液型金矿,矿石类型为破碎带蚀变岩型;金矿化产于一定的有利层位,与区内构造破碎带、层间挤压片理化带及岩脉发育程度关系密切,金矿贫富与黄铁矿多寡、蚀变强弱密切相关。     

新疆库布苏金矿床地质特征及成矿规律

库布苏金矿床位于新疆准噶尔褶皱系东准噶尔褶皱带中部,野马泉地块南缘晚古生代火山岩浆弧带,产于一大型韧-脆性剪切变形带--库布苏强应变构造带中。区内构造极为发育,以NWW向断裂为主,并已发生强烈挤压片理化和糜棱岩化;区内出露含金背景值较高的志留系库布苏群海相火山碎屑岩系;岩浆活动频繁,主要为超浅成侵入的脉岩,岩性为闪长玢岩、石英闪长斑岩和霏细斑岩等。金矿床受岩脉内韧-脆性剪切形成的构造扩容、糜棱岩化带控制,构成赋矿围岩。矿床类型为破碎蚀变岩型,矿体的形成经历了2个期次脉岩（闪长玢岩、石英闪长斑岩）侵入造成的成矿元素迁移富集阶段,矿化富集程度与脉岩内构造扩容、变形及蚀变糜棱岩化程度密切相关。通过对其地质背景与成矿特征的论述,分析了矿床的成矿规律、成矿期次及区内大量脉岩与金成矿的物质成分与空间联系,初步建立了矿床综合找矿模式,以期对深部找矿提供裨益。     

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.     

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，     

《儿子与情人》的语码转换与男女二元对立

劳伦斯小说《儿子与情人》一个鲜明的语言特色就是标准英语和当地方言频繁的语码转换。莫瑞尔用方言来对抗妻子,而妻子坚持用标准英语,偶尔也用方言来讽刺、挖苦丈夫。语码转换反映了劳伦斯男女二元对立的哲学思想。     

抗腐蚀高强耐磨涂料研发与应用

介绍了抗腐蚀高强度耐磨涂料的研制和开发，以及用作柳钢球团回转烘干机刮板保护涂层的应用效果。