张广才岭英城子金矿区早古生代花岗岩的元素地球化学特征、岩石成因及构造意义

系统研究了英城子金矿区内花岗岩的地质、岩相学和元素地球化学特征.研究结果显示:该类花岗岩为富硅(ω(SiO2)=71.12%～75.66%)、高分异(DI=90.53～94.42)、钾质钙碱性岩(σ＝2.37～3.94),富集大离子亲石元素(LREE/HREE=11.20～14.62,ω(Rb)＝(270.6～165.3)×10,Na2O/K2O＝0.18～0.67,等),具负的铕异常,相对亏损Ba、Nb、Sr、P和Ti等元素.这种特征揭示该类花岗岩是准铝质、高分异I型花岗岩,它的母岩浆可能是I型花岗质岩浆,是母岩浆经以斜长石为主的矿物相分离结晶作用后产生的岩浆经结晶作用形成.结合锆石的年代学研究成果,进一步确立该花岗岩可能是在麻山期深变质作用过程中地壳深熔形成的岩浆经分离结晶作用形成,岩浆就位发生在麻山期陆内造山作用的挤压向伸展转换阶段,从发生到就位持续大约20 Ma.     

新疆北部额尔齐斯准蛇绿岩地球化学及年代学特征

额尔齐斯准蛇绿岩由洋脊玄武岩、辉长质杂岩、辉石安山岩、玻镁安山岩、放射虫硅质岩、锰铁质硅质岩组成。镁铁质火山岩与放射虫硅质岩伴生,岩石化学图解显示具有镁铁质堆积岩的特征,稀土元素配分图与典型洋中脊玄武岩相似,新获得玄武岩锆石SHRIMP U-Pb和谐年龄为322±9Ma(95%conf.,n=23,MSWD=1.3)时代为中石炭世早期。经构造环境判别,镁铁质火山岩总体反映出洋中脊向造山带过渡的环境,属于弧盆系演化的过程。     

赣南九龙脑岩体及洪水寨云英岩型钨矿年代学

通过赣南大余县九龙脑岩体及与之有密切成因关系的洪水寨云英岩型钨矿野外地质调查和系统的岩石化学、微量元素、稀土元素和成岩成矿时代研究,结合区域成岩成矿时代的最新研究成果,探讨了赣南地区钨矿的成岩成矿时代及构造环境.结果表明:九龙脑花岗岩体在化学成分上具有高Si、富碱、准铝质到弱过铝质、贫Ca、贫Mg、铁镁比值大、K2O/Na2O＞1的特征;微量元素以富含Rb、K,亏损Ba、Sr等大离子亲石元素(LILE)和富含Th、U、Ce、Y、Sm、Nd、Ta、Hf,亏损Nb、P等高场强元素(HFSE)为主要特征,具强烈的Eu负异常(δEu=0.07～0.10)和较高的10 000Ga/Al特征比值(2.76～2.93),所有这些均显示铝质A型花岗岩的特征.利用锆石SHRIMP U-Pb法,获得九龙脑岩体的成岩年龄为(155.8±1.2)Ma(n=12,MSWD=0.6);利用辉钼矿Re-Os法,获得洪水寨云英岩型钨矿的成矿年龄为(156.3±1.3)Ma(n=7,MSWD=1.5),成岩成矿年龄基本一致.结合崇(义)-(大)余-(上)犹钨锡矿集区已有的年代学资料,指出本区的成岩成矿年龄主要集中在150～160 Ma,属于华南中生代第二次大规模成矿作用,形成于中生代岩石圈伸展时期的侏罗纪板内拉张环境的地球动力学背景.     

南秦岭白马山岩体Sr、Nd、Pb同位素组成及源区示踪

研究了南秦岭晚三叠世(~200 Ma)7个花岗岩类岩体的Sr、Nd、Pb同位素组成,包括白马山岩体在内的南秦岭花岗岩类以低放射成因Pb同位素组成为特征,初始87Sr/86Sr比值范围为0.70495~0.70908,εNd(t)值变化于-2.40~-8.55之间,Nd同位素模式年龄(TDM)变化于1.2~1.7 Ga之间,从东部到西部,呈现εNd(t)逐渐降低而TDM逐渐增高的变化规律。白马山岩体的初始87Sr/86Sr比值为0.70637,εNd(t)=-6.75,具有较高的TDM值(1.53 Ga),暗示其岩浆源区主要来自于南秦岭的大陆下地壳,岩浆源区以类似南秦岭耀岭河群基性火山岩为主,南秦岭较古老的地壳物质仅有少量参与。基性下地壳增厚,岩石圈地幔拆沉,软流圈上涌,下地壳部分熔融形成有利于铜、金成矿的白马山"C"型埃达克岩。     

长江中下游地区A型花岗岩研究

对长江中下游地区江北、江南带A型花岗岩地质地球化学特征进行综合研究.结果表明,江北、江南带A型花岗岩均由正长岩、石英正长岩和碱长花岗岩组成,均具有高硅(Si O2含量为62.1!~75.09!)和高碱(K2O+Na2O值为8.3!~10.9!)、富铝(A/CNK为1.29~1.41)、富集轻稀土、明显的Eu负异常,相对原始地幔明显富集高场强元素Zr、Nb,大离子亲石元素Rb、Th,并不同程度亏损Ba、Sr的特征,主要为A1型花岗岩.结合地球化学特征、全岩Sr-Nd同位素等资料,判断其为地幔和地壳熔融物质混合的结果.锆石测年结果表明该区A型花岗岩均形成于早白垩世128~123Ma之间,属于长江中下游晚中生代岩浆岩形成的第三阶段,处于该区岩石圈减薄和伸展的高峰期.     

东昆仑那更晚三叠世流纹岩地球化学特征、成因及构造环境

岩石地球化学分析显示,那更流纹岩SiO_2含量为70.69%～73.21%,全碱(Na_2O+K_2O)含量7.54%～8.38%,且Na_2OK_2O,Al_2O_3=11.94%～13.11%,A/ANK1.1,岩石属于高钾钙碱性准铝质系列;岩石轻、重稀土元素存在一定的分馏,负铕异常明显(δEu=0.19～0.34),相对富集Rb、Ba、Th、U等元素,亏损Sr、Ta、Nb等元素。其与伸展构造背景下地壳物质部分熔融的产物特征一致。~(206)Pb/~(204)Pb=18.182～18.191,~(207)Pb/~(204)Pb=15.572～15.585,~(208)Pb/~(204)Pb=38.451～38.512,表明岩浆来源于下地壳,为地壳下部岩浆经历了早期结晶分异作用的产物。     

CaO-Al2O3-SiO2基精炼渣LF脱硫的试验研究

在实验室小型试验炉内,用CaO-Al2O3-SiO2基精炼渣进行了钢水脱硫的试验,主要研究了精炼渣碱度、渣中Al2O3和CaF2对钢水脱硫的影响.结果表明:精炼渣碱度在2.85～3.45时,脱硫率在80％以上;精炼渣中w(Al2O3)=24％时,脱硫率为83.7％;随精炼渣中CaF2含量的增加,脱硫率先增大后降低.最佳精炼渣组成为:w(CaO)/w(SiO2)=3.0、w(CaF2) =7％、w(MgO)=6％、w(Al2O3)=24％.     

黑龙江伊春三兴山矿床基本特征及构造意义

通过对三兴山黑云母花岗岩进行矿物学、矿体地球化学及锆石U-Pb年代学进行研究,探讨其成因机制、原岩来源及构造意义。文中SHRIMP U-Pb年龄数据显示三兴山矿山侵位约为190Ma,与伊春其他地区(如上游新村等)基本同期。三兴山矿山岩性为似斑状黑云母二长花岗岩,局部为(微)细粒斑状黑云母二长花岗岩,含特征矿物普通角闪石,无白云母,具有高SiO_2(71.59%-78.24%)、高K_2O(2.64%-5.18%)、和低P_2O_5特征,铝饱和指数(A/CNK)为1.04-1.16,富集K、Th、U、Pb,不同程度的亏损Ti、Nb、P、Sr、Eu等,属准铝质到过铝质高分异I型花岗岩类;结合区域地质背景分析,表明三兴山矿山的形成可能与西伯利亚板块和华北板块对接后的伸展作用有关。     

C12A7炉渣与合金钢液平衡时的Al行为

实验研究得出C12A7炉渣(其组成为:w(SiO2)=6%,w(Al2O3)=46%,w(CaO)=48%)与合金钢液(其化学成分类似42CrMo钢)反应90 min后,钢中w(Al2)=(80～100)×10-6,与之平衡的钢中w(T.O):(6～13)×10-6,生成的夹杂物大都是尺寸很小的低熔点球状钙镁铝硅酸盐类夹杂.从热力学的角度得出了当C12A7炉渣与合金钢液达到平衡时钢中的铝含量以及平衡条件下钢中铝含量较低时也能将钢中氧含量控制在很低范围的原因.     

中间包用高碱度覆盖剂若干熔融状态的模拟研究

对中间包高碱度覆盖剂的若干熔融状态进行了热模拟研究,结果认为:熔融试样中w(Na2O+CaF2)=10%～12%比较合适,其开始熔化温度低于1 350℃;当w(CaO+MgO)/w(Si O2+Al2O3)=2.5左右、w(Na2O+CaF2).R=0.2～0.3时,覆盖剂对MgO质容器润湿最好;R.w(Fe2O3).w(CO2)/w(Na2O+CaF2)值对覆盖剂的隔热性能影响较明显,与熔融试样平均厚度成线性关系。     

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.     

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)     

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.