猪用生长激素脂质体对大白鼠的促生长活性试验

对大白鼠分别腹腔注射猪用生长激素 (PST)和PST脂质体 ,第 7、14、2 8d称重 ,试验组与对照组之间差异显著 (P <0 .0 5 ) ,表明PST和PST脂质体对大白鼠具有促生长活性 ;同时显示 ,PST脂质体具有显著的缓释作用 ,缓释期可达 7d以上。     

Desire for Smart Growth: A Survey of Residential Preferences in the Salt Lake Region of Utah

As an alternative to sprawling development, smart growth combines proximity to work, proximity to shopping and other destinations, neighborhood housing mix, shared and paid parking, complete street designs, and proximity to public transit. This article uses a stated-choice experiment to determine residents' attitudes toward these various aspects of smart growth in the Salt Lake region of Utah. Utah is a conservative state, where attitudes toward auto-oriented suburbia may be more positive than in other parts of the United States. So, one might wonder whether changing national attitudes toward smart growth, documented in several surveys, apply to residents of the Salt Lake region. In this stated-choice experiment, respondents were asked to choose between pairs of housing scenarios with different attributes and different prices. Mixed logit (random parameters logit) was used to relate individuals' choices to attributes, prices, and sociodemographic characteristics of respondents. The results show that, generally, respondents have positive attitudes toward most aspects of smart growth but still express preferences for single-family neighborhoods with free parking in their own driveways or garages. Different life cycle cohorts have different preferences. Proximity to work is more important for childless young adults. Young families with children place higher value on living in a neighborhood with only single-family homes and transit access. Retired empty nesters favor a mix of housing types over single-family housing on one-acre-plus lots. The results suggest that while residents of the Salt Lake region like suburban neighborhoods with primarily single-family houses, they would also like to have improved accessibility to amenities in the suburbs.     

Mandatory Versus Incentive-Based State Zoning Reform Policiesfor Affordable Housing in the United States:A Comparative Assessment

To break the chain of exclusionary zoning and produce affordable housing, mandatory state zoning reform policies have been in place for a couple decades in the United States. Their success is often constrained by local resistance and noncompliance. Some scholars argue that the lack of incentives to communities for affordable housing production is one of the main reasons for their resistance to state mandates. At present, no incentive-based state zoning reform policy is at work except in Massachusetts. Inclusionary zoning policies do offer incentives to developers but not to communities. This article examines the strengths and weaknesses of mandatory state policies and Massachusetts's incentive-based policy and offers policy insights for the future.     

Assessment of Maceration Techniques Used to Remove Soft Tissue from Bone in Cut Mark Analysis

Maceration techniques employed in forensics must be effective without compromising the bone's integrity and morphology, and prevent destruction of evidence. Techniques must also be fast, safe, easily obtainable and inexpensive; not all techniques currently employed are appropriate for forensic use. To evaluate the most suitable approach, seven techniques including current and new methodologies were applied to fresh, fleshed porcine ribs exhibiting cut marks. A sample size of 30 specimens per technique was examined under scanning electron microscopy at the cut mark and the surrounding uncompromised regions; a scoring system of effectiveness was applied. The previously unpublished microwave method fared best for bone and cut mark preservation. Sodium hypochlorite destroyed cut marks, and was deemed unsuitable for forensic analysis. No single technique fulfilled all criteria; however, this study provides a benchmark for forensic anthropologists to select the most appropriate method for their situation, while maintaining the high standards required by forensic science.     

Ancestry and BMI Influences on Facial Soft Tissue Depths for A Cohort of Chinese and Caucasoid Women in Dunedin,New Zealand

This study measured and assessed facial soft tissue depths (FSTDs) in adult female Chinese and New Zealand (NZ) Europeans (Caucasoids). Ultrasound was used to obtain depths at nine landmarks on 108 healthy subjects (51 Chinese, 57 NZ European), erect positioned, of same age group (18–29 years). Height and weight were also recorded. Statistical analysis focused on comparison of tissue depth between the two ancestry groups and the influence of Body Mass Index (BMI) (kg/m²). Results showed mean depth differences at Supra M2 and Infra M2 landmarks significantly greater for Chinese than Caucasoid women for all three BMI Classes (BMI <20, 20 ≤ BMI < 25, 25 ≤ BMI < 30), even BMI <20. For both groups BMI positively correlated with FSTD values at all landmarks except Labrale superius. This study enabled ancestry and BMI influence on FSTDs to be observed and compared for two distinct groups. Results add to knowledge about facial tissue depth variation.     

An Empirical Study on the Relation Between the Critical Angle for Bullet Ricochet and the Properties of Wood

The properties of a bullet, an object, and the incidence angle determine whether the bullet will penetrate, perforate, or ricochet. In this study, the critical angle for ricochet was established for .32 Auto and 9 mm Luger bullets on Abachi, Southern Yellow Pine, Beech, and Ipe wooden boards. Results show that the critical angle differs depending on caliber and wood type. The critical angle is higher for .32 Auto bullets than for 9 mm Luger bullets and increases with increasing wood density and Janka hardness. The established critical angles for ricochet on the lightest and softest wood (Abachi) are 10.4° and 10.3° for .32 Auto and 9 mm Luger, respectively. For the heaviest and hardest wood (Ipe), the angles were 45.0° and 33.4°, respectively. The combined results on the four tested woods show a strong linear relationship between both the density and the hardness and the critical angle for both calibers.     

论重塑审判公开原则的现代法理念

审判公开是司法审判制度的一项基本原则,在人类历史上闪烁着正义之光,它彻底抛弃旧有的愚昧、践踏人权、封建专制的秘密审判方式,发扬诉讼民主和增强社会监督,实现社会公正,增强人们对国家司法制度的信任度。文章拟追溯审判公开原则的历史发展轨迹,科学定义审判公开原则的含义,审视现阶段审判公开原则的实施情况,重塑审判公开原则的现代法理念。     

影响农民增收的政策因素分析

农民增收问题应从国家经济发展的全局来认识。政策因素是影响农民收入的深层原因。农民增收要减轻财税政策对农民税收的不公平性负担;农民增收要改革土地承包政策对农民自主权的局限性,使土地作为生产要素流转经营;农民就业要有政策扶持,取消农民工进城就业的政策限制。     

颅脑损伤所致精神障碍的相关因素研究

目的探讨颅脑损伤所致精神障碍的相关因素。方法以成都市公安交通管理局事故处理大队提供的因道路交通事故造成颅脑损伤的255名存活者为研究对象,在颅脑损伤治疗终结后进行智商测验、记忆商测验、SCID -I评估、PDQC和SCICP评估、脑电地形图检查,并完成人口学资料的收集。依据CCMD-3诊断标准中有关器质性精神障碍的分类进行精神障碍的诊断。结果 255例颅脑损伤患者中,罹患各类精神障碍者共185例,发生率为 72．5％。与颅脑损伤所致精神障碍相关的因素有:患者的文化程度低、脑挫裂伤、脑损伤程度重、左额叶和左颞叶损伤、多脑叶联合损伤及BEAM异常程度重。结论颅脑损伤所致精神障碍的发生率较高;患者的文化程度、颅脑损伤的性质、程度、部位及多脑叶联合损伤等因素对精神障碍的发生具有一定影响。     

关于循环经济理论与实践的思考

随着经济快速增长和人口增加,资源不足的矛盾越来越突出。中央宏观调控的一个重要目标就是重塑一个资源消耗低、环境污染少、经济效益好的国民经济体系,为建设资源节约型社会奠定基础。因此,2004年的中央经济工作会议高举发展循环经济大旗,发展循环经济被提到一个前所未有的战略高度。