劳动力成本上升与中国制造业空间转移

采用中国规模以上工业企业数据,建立面板数据回归模型,研究了劳动力成本上升对制造业空间转移的影响,主要有以下研究结论：① 劳动力成本提升已成为推动中国制造业空间转移的重要影响因素。2004年以前发达地区相对较高的工资水平并未影响到产业集聚,但是2004年以后较高的工资水平开始推动制造业企业向工资水平较低的地区迁移,但出口型企业与满足国内市场需求的制造业企业体现出了不同的转移路线。② 2004年以前中国制造业总体上不断向长三角、珠三角以及山东半岛等地区集中,2004年以后制造业开始向沿海相对较为落后的江苏北部、山东中西部以及中国中西部地区迁移,满足国内市场需求的制造业企业是向中西部地区迁移的主体,出口型企业由长三角和珠三角向东部地区的山东半岛和辽东半岛等交通条件较好的地区迁移。③ 东部地区产业升级缓慢。尽管产业向外转移,但东部沿海地区的产业尤其是满足国内市场需求的制造业企业仍然以劳动力驱动为主,资本驱动的特征并不明显。但出口型企业的发展率先表现出了资本驱动的特征。     

直接使用航摄底片进行飞行质量检查

通过对底片法与常规法检查流程的比较及对飞行质量的检查，论述了用航摄底片直接进行飞行质量检查的可行性，实践证明，利用底片法是一种行之有效的方法。     

Factors explaining the dispersal of Hendra virus disease in South-East Queensland

Hendra virus (HeV) was first described in 1994 following the outbreak of a new disease fatally affecting horses and humans in South-east Queensland. The disease kills 70% of the infected horses and under some circumstances the virus is spread to humans who have had close contact with the infected horses. Fruit bats (Pteropus spp.) commonly known as flying foxes have been identified as the natural host of the virus. A preliminary analysis of the incidents and the flying fox roosting sites revealed a strong relationship between the temporary and seasonal roosting sites in the South-east Queensland. The aim of this paper is to determine the potential factors that can explain the dispersal of HeV incidents in the study area. Based on the preliminary results, a further analysis was done on the roosting sites by considering factors such as the species of flying foxes, foraging range and pregnancy period. Spatial autocorrelation (Global Moran’s I) revealed significant clustering of P. alecto and P. scapulatus species. Kernel density estimation analysis helped in identifying a strong relationship between P. alecto & P. scapulatus species density and the outbreak events in the study area. Buffer analysis established an initial relationship between P. alecto & P. poliocephalus species birth periods and the incidents. Ordinary least-squares regression identified P. poliocephalus species as statistically significant at a global context across the study area. Geographically weighted regression analysis was performed to study the local spatial variations of the explanatory variables. P. alecto & P. poliocephalus species exhibited a significant positive relationship in most of the regions where as pregnancy period variable exhibited a significant negative relationship to the HeV incidents in the study area.     

气温、气压对飞行安全的影响分析

分析了气温，气压变化造成的高度表误差及气温及气温的变化带来的飞 机空速表误差，认为现行民航航线飞行安全高度的规定存在一定的不足，并提出了改进办法。     

LYZ－XD12型单臂液压凿岩钻车的研制

介绍了ＬＹＺ－ＸＤ１２型单臂液压钻车的主要构造,阐述了该钻车工作机构“双三角”变幅钻臂和双层伸缩式推进器的原理和结构,以及该钻车的液压系统。     

航磁测量中飞行高度质量控制的方法技术

在青藏高原中西部开展的1:100万高精度航磁概查中,能否获得高质量的测量效果,关键在于能否在野外作业中保持较低的飞行高度。在保证飞行安全的前提下,根据测区的地形、气象条件和飞机性能,提出了旨在能有效地降低飞行高度的新的测量方法,取得了预期效果,有一定的推广意义。     

Estimation of spawning habitats of market squid (Doryteuthis opalescens) from field surveys of eggs off Central and Southern California

Like many other loliginid squid, Doryteuthis (Loligo) opalescens deposits egg cases on the ocean floor. Depending upon temperature, egg cases may persist for 5–12 weeks before the paralarvae hatch. Because of this relatively long duration and squid’s pelagic life history, egg cases provide a practical life stage to survey. During 2001–2002, squid egg beds in Monterey Bay, Carmel Bay, and around the California Channel Islands were surveyed using a remotely operated vehicle with the goal of delineating the habitat of egg beds that are spawned during active commercial fishing. Egg cases were highly aggregated and densities reached 1338 capsules m⁻². Squid eggs were significantly shallower in Central California. Egg cases occurred between 20 and 93 m around the Channel Islands, and in Central California they were between 13 and 61 m. The temperatures in both regions were similar (10–12 °C), with some eggs in Southern California found up to 14.4 °C. Ninety-five percent of eggs were found on sand, suggesting that temperature and substrate are stronger behavioral cues than depth to stimulate spawning. Suitable spawning habitat was defined by three criteria: sandy benthic substrate, temperatures between 10 and 14.4 °C, and depths between 20 and 70 m when the first two criteria hold. Additionally, within this defined area, oxygen concentration is quantified. The greatest commercial landings of market squid occur in both Central and Southern California during a time of year when water temperatures of 10–12 °C are prevalent in the 20–70 m depth range.     

多种糖类添加物对秘鲁鱿鱼(Loliginidae)肌原纤维蛋白抗冻保水效果及构象变化影响研究

为探索海藻糖类对于冷冻水产品的抗冻保水效果,以秘鲁鱿鱼(Loliginidae)鱼糜为研究对象,以焦磷酸钠保水处理为对照,研究海藻糖、海藻胶寡糖及海藻胶对秘鲁鱿鱼鱼糜蛋白质抗冻保水的作用效果。结果表明,–18°C冻藏6周后,1.0%海藻糖和海藻胶寡糖(500—600Da)处理效果最好,可显著降低冷冻鱿鱼鱼糜解冻汁液流失(5.00%—5.54%),其与焦磷酸钠保水效果无显著性差异(5.02%—5.48%,P0.05)。整个冻藏期内,随着冻藏时间延长,不同处理鱿鱼鱼糜盐溶性蛋白、Ca2+-ATPase活性及总巯基均呈逐渐下降趋势,其中海藻糖、海藻胶寡糖对鱿鱼鱼糜蛋白质特性的保护效果,显著优于蒸馏水、焦磷酸钠处理(P0.05)。本研究可为开发一种安全、高效、节能、环保,适用于冷冻鱿鱼的海藻糖类抗冻保水剂提供参考。     

摄食鱿鱼对小鼠脂质代谢的影响

研究高胆固醇食物鱿鱼对小鼠脂质代谢的影响.Balb/c小鼠按体重随机分为酪蛋白对照组、鱿鱼添加组6%、9%和12%(以蛋白质含量计)、猪肉添加组12%(以蛋白质含量计),喂食3周.分别检测血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL-c)和肝脏TC,TG含量.称量小鼠体重,肝脏、肾脏重量以及精巢脂肪重量;观察小鼠进食量并计算食物功效比(FER).猪肉、鱿鱼添加组体重增加均较酪蛋白组明显,鱿鱼添加组肝脏重量较对照组显著增加,而猪肉添加组则显著降低(P<0.05).不同添加量的鱿鱼对小鼠血清TC水平均有显著降低作用,而猪肉则明显提升小鼠血清TC含量.鱿鱼添加组小鼠血清TG、HDL-c浓度及AI均较对照组有不同程度的降低.另一方面,鱿鱼各浓度添加组对小鼠肝脏TC及TG含量均有明显的增加作用.摄食鱿鱼与猪肉对小鼠血清和肝脏脂肪代谢的影响显著不同,进食鱿鱼有助于降低血清中胆固醇和甘油三酯的含量,摄食鱿鱼并不增加动脉粥样硬化的危险性.