资源驱动型旅游地中心城市形象研究——以黄山市屯溪区为例

资源驱动型旅游地中心城市是我国普遍存在的一种旅游城市类型，但对这类城市形象的研究相对较少。以黄山市屯溪区为例，在感知形象测度的基础上，利用定性与定量方法论结合分析其感知形象现状和问题，并提出解决方案，总结出该类型城市在形象建设中应当注意的四对矛盾。     

以公交车为平台的应急医疗救援车辆快速改装研究

针对社会公共突发事件造成的创伤特点，以现有灾害和恐怖活动快速医学救援为侧重点，提出临时快速改装以公交车辆为平台的系列现场伤员救治与抢运装备的设想，并详细分析了建立公交车机动医院的必要性和可行性。公交车机动医院的实施将对未来我国处理公共突发事件提供新的应对措施。     

Factors associated with higher levels of injury severity in occupants of motor vehicles that were severely damaged in traffic crashes in Kentucky, 2000-2001

OBJECTIVES: The majority of motor vehicle occupants who were killed or hospitalized in crashes in Kentucky in 2000-2001 occupied vehicles that were severely damaged in the crash. Even so, overall only a small percentage of all severely damaged vehicle occupants were killed or hospitalized. The purpose was to identify occupant, vehicle, crash, and roadway/environmental factors that were associated with increased risk of severe injury in crashes where the occupant's vehicle was severely damaged. METHODS: This study probabilistically linked Kentucky's statewide motor vehicle crash and inpatient hospital discharge data files for 2000 and 2001, and selected cases representing occupants of vehicles that were reported by police as having either "severe" or "very severe" damage. For occupants who were identified through data linkage as having been hospitalized, the Injury Severity Score (ISS) was calculated using ICDMAP-90 software, and the scores were stratified into the following categories: critical (>24), severe (15-24), moderate (9-14), and mild (<9). We then created an outcome variable, injury severity level, with five levels: killed; hospitalized with at least moderate injuries (ISS = critical, severe, or moderate); hospitalized with mild injuries (ISS = mild); injured according to the police report but not hospitalized; and no apparent injury according to the police report. We performed a stepwise, ordinal logistic regression of injury severity, using independent variables identified from the existing crash literature. RESULTS: Occupant risk factors for higher levels of injury severity selected by the regression were age (risk increased with age, other factors being equal), female gender, restraint non-use, ejection from the vehicle, and driver impairment (by alcohol and/or drugs). Crash risk factors included head-on collision, collision with a fixed object, vehicle rollover, and vehicle fire. Roadway/environmental factors were federal- or state-maintained roadway and posted speed limit 89 kph (55 mph) or greater. CONCLUSIONS: Many of the identified risk factors are explicitly or implicitly mentioned in the strategic plans of key organizations involved in highway safety and injury prevention in Kentucky. Our analysis provides additional evidence of their importance, and confirms that their mitigation will reduce injury severity in crashes involving severe vehicle damage. Additionally, older occupants and female occupants showed increased risks of serious injury, but to our knowledge these factors are not currently addressed in any state plans. An opportunity exists to clarify the nature of these risks through further studies, which might lead to the identification of countermeasures specific to these populations.     

玉米抗低温助长剂田间试验研究

为防御东北玉米低温冷害,研制了一种新型的玉米抗低温助长剂,其抗低温效果已为人工温控试验所证实。本项研究采用分期播种、地理播种和田间多处理对比试验方法,检验该化学制剂在影响玉米发育、生物量及产量性状方面的实用效果,并探求其适宜的浓度配比和喷施期次。研究结果表明,该制剂具有促生长、促早熟和使作物高产的性能,可防御延迟型冷害。施用时以1：400倍液和在营养生长期内两次喷施为佳。     

武钢技术中心镀锌楼通风装置的改进

论述了镀锌楼通风装置的改进措施,并对改进措施进行了设计计算,实际运行效果良好。     

废高磁合金钢中钴、镍的分离和利用

用硫酸、盐酸和硝酸溶解废高磁合金钢、并将Fe^2 氧化为Fe^3 。先用黄铁矾法除去大部分铁,用尿素除去少量的铁及铝、钛、铜;最后在NH3－NH4Cl体系中分离钴、镍,并制成相应的盐。钴、镍的回收率分别国81．5％、89．7％。     

压缩空气对井下热环境的降温效果研究

压缩空气是矿山井下常用动力,它具有膨胀吸热的特性,因而可用于改善井下作业环境与气候条件。通过对矿井压缩空气吸热量的计算,分析了压气对井下热工作面的降温影响,并获得了压气与工作面降温效果的数学关系。还对井下采用压气降温进行了经济评价,指出了压气降温仍为我国深井局部降温的一种可供选择的好方法。     

喷嘴夹持及升降调节安全自动操作装置的研究与设计

介绍了喷嘴实验室的发展情况和武钢技术中心喷嘴试验室建设要求 ,进行了喷嘴夹持及升降调节安全自动操作装置的方案选择、结构设计及主要几何计算 ,分析了它的特点     

供气条件对小球藻固定二氧化碳的影响

对三种不同的供气条件下,小球藻对CO2的固定速率进行了研究,结果表明,用鼓泡系统供气时,在CO2浓度渐增的条件下比固定CO2浓度条件下小球藻对CO2固定速率高,用旁路中空纤维组件吸收供气系统供气时,CO2的传递率高于鼓泡供气系统;这两种供气系统中小球藻的生长模式和CO2的固定率相似。     

喜马拉雅山中段北坡对流层中上部大气降水化学的高程分布特征

1997年夏季在希夏邦马峰北坡达索普冰川区(28°33′N,85°44′E)海拔5800m～7000m区间对4次降雪过程进行了系统的采样工作,目的是认识全球偏远地区对流层中上部大气成分的高程分布特征.达索普冰川区夏季4次降水中,局地大陆性气团降水SO₄^2-、NO₃^-、Ca²⁺和Mg²⁺之间存在显著的正相关性,而海洋性气团降水4种离子之间的相关性变化较大,说明在夏季低尘埃阶段大气中各种离子的主导来源处在短期的(如数天)变化中.这种离子主导来源的变化同时也影响了降水中离子的高程分布特征.总体上达索普冰川区夏季降水中NO₃^-、Ca²⁺、Mg²⁺浓度随海拔的升高呈减小趋势,SO₄^2-浓度则为增大趋势.