大学生专业选择影响因素探讨

对于大学生来说,选择一个适合自己的专业,将直接影响一生的发展.然而多项调查表明,学生在填报志愿时,对自己、对学校、对专业以及对自己未来的职业规划却了解甚少.学生进入大学后,有相当一部分学生对所选专业并不满意.本文通过对一些学生的实地调查,对影响大学生专业选择的因素进行了研究分析,并提出了一些建议,以期对大学生专业选择有所帮助.     

对大学生英语文化内涵词学习情况的调查

运用定量分析方法,对28名普通本科英语专业大学生对英语文化内涵词的学习及掌握情况进行问卷调查,并对调查数据进行比较研究.结果表明:英语专业大学生对英语文化内涵词的学习比较缺乏,对此类词语的学习没有引起重视,该研究对英语教学有一定的启示.     

分析城市地质调查的需求及相关问题

随着城市化建设的脚步不断加快,地质环境问题对城市化建设的影响越加明显,开展城市地质调查工作迫在眉睫。本文首先对城市化发展对地质调查的需求性进行阐述,然后对城市地质调查的具体内容进行分析,最后对城市地质调查中的关键性问题进行了解,并且提出了针对性的实施策略,希望对我国城市地质调查工作提供一定的借鉴。     

皖南地区矿山水文地质特征及其形成机制研究

为实现对矿山更安全地露天开采,对皖南地区矿山的水文地质特征及其形成机制进行研究,通过对皖南地区矿山的概况分析,结合实际情况探讨皖南地区矿山水文地质的具体特征,通过对矿山所在地理位置的分析,了解其先天气候条件以及板块运动因素,对该矿山地区的水文地质特征的成因机制进行研究,探究多种因素对矿山地区的水文地质产生的影响,进而实...     

汉语对高职生英语学习的影响

本文探讨了汉语对高职生英语学习的影响.一方面,汉语与英语有着相通之处,可以促进对英语的理解能力,激发学生对学习英语兴趣,即汉语对英语学习的正迁移.另一方面,汉语又会干扰学生对英语语音、词汇、语法学习和对英语文化的理解,即汉语对英语学习的负迁移.参与英语教学的师生应认识到这一现象,充分利用其正迁移影响,使其起积极作用;同时克服汉语对英语学习的负迁移,避免其起干扰,使英语教学达到最佳效果.     

轧钢厂能耗对标的实践与讨论

能耗对标是企业实现持续改进、创新超越的实践活动,它涉及企业生产经营的各个方面,通过能耗对标活动,找出与同行业先进水平的差距,制定跟进赶超的路线图和时间表,达到追赶先进、提高自身清洁生产水平的目的。通过对轧钢生产企业能耗对标实践的剖析,对企业开展能耗对标的方法和意义进行了有益探讨。     

电解铝企业对标管理探讨

对标管理对于电解铝企业来说是长期有效的,经过多年来的对标,电解铝企业积累了对标的工作流程和好的做法。但随着对标的深入和长效机制建立,大多数企业的对标趋向程序流程性动作,对标效果也呈现边际递减趋势,如何进一步把对标管理深入并不断创新。本文主要从加强业财结合,实现数字共享,提升价值创造能力方面,在“双碳”行动“能耗双控”下对标思路转换两个途径进行对标管理探讨,以更好推动电解铝企业高质量发展。     

高效藻类塘对小城镇养殖废水净化效能的影响

[目的]探索高效藻类螗中藻类、曝气和底泥对小城镇养殖废水净化效能的影响.[方法]设置4个独立人工池塘作对比试验,通过控制试验塘中的藻类浓度、底泥及曝气程度,测定养殖废水中的还原性物质、氮和磷的变化量,进而比较藻类、底泥和曝气对废水净化效能的影响.[结果]高效藻类塘对还原性物质、氟和磷的去除率分别达到88.3%、69.2%和59.7%,而普通塘对其去除率分别仅有48.0%,43.4%和22.8%.藻类对TP的去除影响最为明显,其次是对COD,对TN的影响最弱;曝气对COD代表的还原性物质的去除率影响最大,其次是对TN的降低,对TP的影响最弱;底泥对TP的去除影响极为显著,其次是对TN,而对.COD的降低影响最弱.[结论]高效藻类塘中藻类、曝气和底泥均对养殖废水的净化产生较大影响.     

石油地质研究中的特征与规律浅析

在化石能源中是石油是其最重要的资源,石油的发开对世界经济造成了巨大的影响,但是也成世界抢夺的重点。尝试对石油地质的特点和规律进行探索,是为了对开采石油的效率进行不断的提高,所以,对与各国而言都有着深刻的意义,本文将对石油地质中的特征和规律进行研究,通过研究发现在对石油地质的认识上还存在一定的局限性,通过对石油地质进行不断的总结得到相关的规律,并对其不同阶段的表现形式进行阐述。     

让班级文化涵育小学生健康成长

校园文化对人才培养的作用,在许多方面是通过班风对人的影响和作用来体现的.不管我们是否意识到,班级文化无时无刻不在对学生进行着潜移默化的影响,这种影响主要表现为对学生心理发展的影响.实践证明,健康的心态对学生的成长起着决定性的作用. 一、班级文化对小学生健康成长的作用 概括而言,班级文化对小学生的心理发展有以下几方面的作用:     

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.     

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.     

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。