天山南麓产业群落特征及演化趋势研究——以巴音郭楞蒙古自治州为例

文章以巴音郭楞蒙古自治州为例,根据产业群落的生态学特征,引入景观生态学中的多样性指数,从丰富度、均匀度和优势度等三个方面对天山南麓产业群落的内部结构进行分析,在此基础上引入灰色关联模型,探讨了产业的规模、效益及经济增长与多样性指数之间的内在联系,结果显示:产业群落丰富度先增后减,均匀度呈现下降趋势,优势度呈现快速上升趋势,并表现出阶段性特征,Shannon多样性指数计算的产业群落演化规律与Margalef等人对植物群落的研究结论有差异;产业的规模、效益及经济增长与多样性指数之间关联度较强,与时间呈线性递增关系;巴州的产业群落属于发展演替,形成了以石油与天然气开采业为"关键种产业"的资源型产业群落,正处于增长和趋同阶段。在讨论部分对景观生态学的多样性指数在产业群落研究中的不足进行了评价,对巴州今后产业群落的发展提出建议

用于垒下重离子熔合裂变研究的两维位置灵敏探测器

描述了用于近垒和垒下重离子熔合裂变实验的主要探测器——两维位置灵敏雪崩室(BPAC)的结构、工作原理及性能.给出了利用 BPAC 探测到的84MeV(E_(cm))~(16)O+~(232)Th 反应中不同碎片角区的碎片折叠角分布,并从中区分了转移裂变和复合核裂变的碎片角分布.从而证明转移裂变不是导致碎片角分布各向异性异常的原因.同时,实验结果支持了预平衡裂变模型对碎片角分布异常现象的解释.The structure,operation principle and performance of the bi-dimension position sensi- tive avalanche chamber (BPAC) used in the study of fusion fission induced by heavy ions at the near and sub-Coulomb barrier energy region are described. The fold angle distribution of fragments in different angle region for 84MeV (E_(cm))~(16)O+ ~(232)Th reaction system was obtained by using BPAC,from which the angle distribution of transfer-fission fragments has been distinguished from that of compound mucleus fission fra..

Implementation and effect analysis of training of full-time educator for the management of chronic respiratory diseases (呼吸系统慢性疾病管理专职教育师培训的实施及效果分析)

Objective To analyze the effect of training of full-time educator for the management of chronic respiratory diseases, and to investigate the standardized training methods and improvement strategies for the following training of full-time educator for the management of chronic respiratory diseases. Methods Two rounds of expert consultation were conducted to determine the outline, model and contents of training. The training program consisted of two parts: one-week theoretical study and 6-month clinical practice. All the nurses involved in the training had taken the exams about theoretical knowledge and practice skills of management of chronic respiratory diseases. A questionnaire survey was conducted to investigate nurses’ satisfaction with training program. Results The outcome of investigation on knowledge about chronic respiratory diseases showed that an increased score was achieved after training(74. 60±6. 70 vs. 59. 83±12. 50, P＜0. 01 ). The Pass rate of theoretical examination was 98. 75%(79/80). The overall satisfaction rate was 98. 75%(79/80). Conclusion The well-designed training program is effective to improve the quality of training for the full-time educator specialized in the management of chronic respiratory diseases. (目的 分析呼吸系统慢性疾病(以下简称“呼吸慢病”)管理专职教育师的培训模式及效果, 探讨后期呼吸慢病管理专职教育师培训方案、规范化培训方法, 提高呼吸慢病管理教育师的培训质量。方法 由全国范围内呼吸系统医疗、护理专家组成专家组, 经过两轮专家讨论, 确定培训大纲、培训模式及培训内容, 采取全封闭专科理论学习一周、专科临床实践6个月相结合的方式。培训结束后对学员进行考核, 包括理论考核、培训前后呼吸慢病知识测评、培训满意度调查表。结果 学员呼吸慢病知识掌握情况调查结果显示, 培训前总分(59. 83±12. 50)分, 培训后为(74. 60±6. 70)分, 差异有统计学意义(P＜0. 01)。学员理论考核合格率为98. 75%(79/80), 对培训的总体满意度为98. 75%(79/80)。结论 呼吸慢病管理专职教育师的培训体系设计合理, 能够提高呼吸慢病管理教育师的培训质量。

~（16）O＋~（nat）S全熔合激发函数

在入射能量为５５—７５ＭｅＶ的范围内，借助于位置灵敏的△Ｅ－Ｅ望远镜系统测量了（１６）Ｏ＋ｎａｔＳ反应的全熔合激发函数并做了讨论分析，提取了模型参数．激发函数存在着粗结构，其峰位分别为ＥｃＭ＝３８、４３、４８ＭｅＶ．The complete fusion excitation function for the 16O + natS reaction has been measured in the range of 50-75 MeV with a step of 1.0MeV by using 1a position sensitive △E-E telescope system. The model parameters have been extracted from data analysis.The striking gross structure of the excitation function has been observed. The energies of peaks are at EcM = 38,43 and 48 MeV respectively.中国科学院七五重大课题,中国科学基