“骨”之意象解读——对伍慧明小说《骨》的主题研究

美国华裔女性作家伍慧明是美国文坛上近几年出现的后起之秀,她的处女作《骨》深刻描述了美国华裔生活的新经历,受到广泛关注和好评。在小说中她将“骨”这一简单意象作为贯穿全文的一条主线,以简洁的文字深入探讨了华裔美国人的多元文化属性问题,以多重对话的方式使个人、家庭历史得以再现,向以白人为主导的强势文化及父权中心发起挑战,同时对中西方文化的融合与冲撞予以反思,从而表现出美国华裔移民在双重文化环境中寻找文化认同、确定文化属性的艰辛及不懈努力。     

论矿产资源使用者成本的补偿机制

要实现矿产资源的可持续开采利用,核心问题是实现使用者成本的价值补偿和实物补偿。在现阶段,借鉴发达国家的先进经验,构建符合中国国情的使用者成本的市场化补偿机制,要着重解决好以下几个环节:第一,良好界定的产权是使用者成本顺利补偿的前提;第二,矿山地租的合理征收,是使用者成本补偿的主要渠道;第三,以经济激励型管理模式逐步取代命令控制型管理模式,来解决无证开采、采富弃贫等问题;第四,培育矿业权交易市场,形成合理的矿业权价格与矿产品价格;第五,对资源所在地进行耗竭补偿,解决使用者成本的空间异置问题。     

矿产资源规划的若干问题研究

矿产资源规划是实现资源可持续利用和矿业可持续发展的重要保证.矿产资源规划的编制是…项新的工作,许多问题还处在探索当中.作者结合参与区县级矿产资源规划工作的实际,对矿产资源规划编制工作中存在的若干问题进行了探讨,提出了一系列切实可行的解决办法和措施.在规划的过程中,应注意引导下面的几个问题,以有利于国家体系性规划的顺利进行.     

骨笛神韵--8000年前骨笛研究

1986年，兴隆洼文化遗址出土一支骨笛，经专家研究鉴定、修复、测音、演奏，证明了它是中国远古时期最早的乐器之一。证明中国音乐的历史和乐器制作史，距今已有8000多年，同时还证明了8000年前中国音乐的构成，不仅有5声音阶、6声音阶，还有7声音阶，把中国7声音阶的历史提前到了8000年前。对推动中华文明的探源工程有着极为深远的意义，对进一步研究中国乃至世界音乐史意义重大。     

新疆矿产资源优势及其战略地位研究

矿产资源是国民经济和社会发展的重要物质基础。随着工业化、城镇化大规模快速推进,我国矿产资源供需矛盾日益突出,确立安全持续的资源战略及供给体系,成为中国经济保持平稳快速增长的必然要求。用资源经济学理论和地缘政治眼光审视新疆矿产资源优势,新疆不但矿产资源富集、矿产品种多样、地域分布广泛,而且资源存量丰富、后备潜力巨大,特别是具有开展国际资源合作,建成国际能源通道,拓展矿产利用空间的地缘优势。该文认为新疆应加快国际化矿产资源基地和现代资源产业集群的建设布局,以提升新型工业化和现代城镇化的质量内涵。     

Estimating the prevalence of low-lumbar spine bone mineral density in older men with or at risk for HIV infection using normal mixture models

Bone mineral density decreases naturally as we age because existing bone tissue is reabsorbed by the body faster than new bone tissue is synthesized. When this occurs, bones lose calcium and other minerals. What is normal bone mineral density for men 50 years and older? Suitable diagnostic cutoff values for men are less well defined than for women. In this paper, we propose using normal mixture models to estimate the prevalence of low-lumbar spine bone mineral density in men 50 years and older with or at risk for human immunodeficiency virus infection when normal values of bone mineral density are not generally known. The Box–Cox power transformation is used to determine which transformation best suits normal mixture distributions. Parametric bootstrap tests are used to determine the number of mixture components and to determine whether the mixture components are homoscedastic or heteroscedastic.     

The predictive role of bone turnover markers for BMD in middle-aged men

Measurement of bone turnover markers has been proposed as a potentially valuable clinical laboratory aid in osteoporosis risk assessment. These markers may allow quantitative evaluation of rates of bone loss, and thereby identify persons at risk for osteoporosis at an earlier stage. As far as we know, this is the longest longitudinal study on bone turnover markers conducted in adult men. The objectives of this study were to determine whether markers of bone formation (type I procollagen amino-terminal propeptide, PINP, and carboxy-terminal propeptide, PICP), and of bone resorption (type I collagen carboxy-terminal telopeptide, ICTP), are predictive of changes in lumbar spine and femoral neck BMD over a 5-year period, and to determine the ability of the bone resorption marker urine amino-terminal telopeptide (NTx) to explain the variance in BMD change over the past 5 years in a group of men 35–69 years old. In this group, NTx was the only marker to correlate significantly with BMD changes at the femoral neck (r = ?0.21), but not at the spine. The use of the biochemical markers studied to predict change in bone density in adult men in middle-aged years is of very limited value.     

Clinical effects of growth hormone on bone: a review

Growth hormone (GH) stimulates bone turnover. Deficiency of GH due to hypopituitarism is related to low bone mineral density and increased fracture risk. GH substitution increases and thus normalizes bone mineral density in these patients, which is one of a number of arguments for GH substitution in hypopituitarism. In contrast, a possible therapeutic use of GH in idiopathic osteoporosis and glucocorticoid-induced osteoporosis is speculative and not established. Reduction of osteoporosis risk is an argument brought up for a use of GH in healthy elderly persons (anti-aging medicine). However, since only very limited data are available yet, this cannot be based on scientific evidence, and there are important concerns about the safety of use of GH in healthy elderly persons.     

做好矿产资源管理的思考

我国的矿产资源管理存在着开采无序、资源配置效率和利用效率低下等严重问题,造成这些问题的原因主要有法规滞后、利益关系复杂、发展观不科学、消费观不科学等。应通过完善法律法规、引导树立科学发展观、加强监管等途径进一步做好矿产资源的管理工作。     

深海战略性矿产资源开发的理论分析

积极开发具有战略意义的深海矿产资源是化解世界金属矿产资源危机的重要途径。深海战略性矿产资源具有“公共物品”属性,虽然以《联合国海洋法公约》为基础的国际海洋制度确立了深海战略性矿产资源开发的制度安排,但是深海战略性矿产资源开发仍然具有显著的外部效应,主要表现为其开发引起的国际海洋权益纠纷和海洋生态环境影响。同时,世界矿产品市场供求不稳定所造成的矿产品价格波动和深海战略性矿产资源开发的成本问题是影响其商业化开发的主要经济原因。