开展家畜繁殖学课程兴趣小组实践与探索

针对教学改革中提倡素质教育和学生全面发展的方针,组建家畜繁殖学课程兴趣小组,发掘兴趣以培养学生创新能力,激发潜能以培养学生科研意识,教学相长以优化家畜繁殖学教学体系.家畜繁殖学课程兴趣小组教学实践效果良好,理论教学与实践教学相结合,科研优势形成教学资源优势,学习能力转化为实践能力.     

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.     

Alzheimer's Disease and Older Women

The graying of America suggests that dementia will become "the epidemic of the 21st century." First described in 1907, Alzheimer's Disease (AD) accounts for an estimated two-thirds of all dementia. AD currently has no cure, thus causing a major drain on health care and family resources. Compared to men, women are uniquely affected by AD due to their gender-associated increased risk, longer life span, and roles as caregivers within families and institutions. Living successfully with dementia requires medical and behavioral interventions to manage disruptive symptoms, knowledge to optimize environmental conditions, and caregiver support and savvy to avoid burnout. Strategies for maximizing functioning in older women living with AD are provided.     

农畜产品经营专业化发展研究——以甘肃省庆阳市下庄羊肉专业村为例

农畜产品经营专业化发展是目前我国农村经济发展的重要方向。甘肃省庆阳市下庄羊肉经营专业村的发展颇具特色,其专业化经营是以销售为龙头,以屠宰加工队伍为主体,连带肉羊养殖、副产品回收加工和利用等环节,形成了以定向交易为纽带,具有合理分工和协作关系的专业化产业组织系统。其生产组织特点显示,农畜产品经营专业化发展具有以销售为龙头、专业队伍建设为基础、技术和经营创新为动力、产业分工为关键、区域化交易网络为纽带的发展机制。在发展中具有明显的技术、成本、市场和组织优势,有利于推动农民创业和区域经济发展。其发展方向体现出专业化发展中需要发挥地缘优势、区域特色优势和推进市场化开发的重要思路。     

框架刚性连接梁柱节点抗震性能研究

通常认为钢框架具有良好的抗震性能,但在最近的几次大地震中许多高层钢结构房屋的梁柱连接节点处发生严重的破坏。这说明传统的刚性连接框架在某些方面存在着不足之处。对刚性节点的形式以及抗震的能力进行探讨,并作出改进的措施,给以后的设计、施工提出意见和建议。     

中国畜产品在日本市场的竞争力分析

日本一直是中国畜产品出口的主要市场,而在日本畜产品市场上,澳大利亚和美国则是中国最大的竞争对手。本文主要运用市场占有率（PRM）、畜产品出口相似度指教（ESI）和显性比较优势指数（RCA）,采用联合国统计司贸易数据库（COMTRADE）的数据来比较分析了中美澳三国畜产品的竞争优势及劣势。分析结果表明中美澳三国畜产品的出口相似度上升,而且中国大部分畜产品的竞争力不足,但中国在肉制品、蜂蜜、动物皮毛及动物油脂上的比较优势仍然明显,畜产品的整体市场占有率一直处于上升趋势。     

论科学发展观与畜牧业以质增效

畜牧产业作为国民经济体系的重要构成部分,作为农业和农村经济中的支柱产业,要想实现以质增效,必须树立科学发展观。在对科学发展观为畜牧业以质增效带来机遇进行深入分析的基础上,从产业规划、结构调整,提高畜牧产品的质量和建立畜产品安全监控体系,实现牧区草地资源开发利用与可持续发展相结合等方面提出落实科学发展观,推进畜牧业以质增效的对策方略。     

一种新型医用光纤压力传感系统的研究

设计制作了一种新型医用光纤压力传感系统。首次成功地用于齿科研究中对全口托牙基座与其下组织之间压强的测量,结果令人满意。文中重点讨论系统所用光纤压力传感器的数学模型、结构与特性。     

An association between bone mineral density and anabolic hormones in middle-aged and elderly men with prediabetes

Introduction: Prediabetes (PD) leads to reduced testosterone (T) in males, but the association between the anabolic hormones and bone mineral density (BMD) remains unknown.

Objectives: We investigated an association between the anabolic hormones and BMD in middle-aged and elderly men with PD.

Methods: We investigated 84 prediabetic and 56 control men. Total T (TT), calculated free T (cFT), and dehydroepiandrosterone sulfate (DHEAS) were measured, and BMD was assessed using DXA methods.

Results: Patients with PD had lower TT (p?p?<?.005), and DHEAS (p?<?.02) than control group. BMD values of the lower lumbar spine (p?<?.02) and total body (p?<?.05) in prediabetic men were lower than in control group. Lumbar spine BMD correlated with TT (r?=?0.376), cFT (r?=?0.235), and HbA1c (r?=??0.368); femoral neck BMD correlated with TT (r?=?0.412) and cFT (r?=?0.421). The high lumbar spine and femur neck BMD was associated with high TT, cFT, and low HbA1c, while the high total body BMD with high TT, cFT, and low HbA1c.

Conclusion: The anabolic hormones significantly affect BMD in male with PD, and screening for low BMD is necessary in these patients.     

青海藏区农牧业循环经济发展研究

农牧业是青海藏区国民经济的重要组成部分，要在构建循环型农牧业体系的基础上大力发展特色农牧业经济，加强对农牧业人力资源的开发，提高农牧民及经营者素质，充分发挥政府在政策制定和规划中的主导作用。