濮阳市公路交通事故气象条件分析

利用代表濮阳市公路交通状况的南乐县、范县、濮阳县公路交通事故资料和气象资料，分析了濮阳市公路交通事故发生的一般规律及其与气象条件的关系，以及几种主要气象要素对公路交通的影响，在此基础上提出了减少公路交通事故的防御措施和对策。     

根据气象条件修正敏感点空气质量背景值的初步探讨

环境空气质量背景值是一个动态值,它与污染源、气象条件和地形等因素密切相关。通过对一个环境空气三级评价案例的分析和处理中,找出背景值修正的一种思路和简易方法。     

激光扫描多三维视图的全自动无缝镶嵌

探讨了不同坐标系下的三维点云统一到某一固定坐标系下形成完整目标的问题，提出了一种全自动获取三维视图配准初值的方法。对多三维视图，应用基于闭合条件的整体平差模型，获得最小二乘意义下的最优变换参数，实现了对多三笋视图的全自动无缝镶嵌。利用激光扫描仪的实际扫描数据进行了试验，得到了预期的结果，并验证了本文方法的可行性和有效性。     

IMPACT OF STARVATION ON SURVIVAL，MEAT CONDITION AND METABOLISM OF CHLAMYS FARRERI

The effects of 60-day starvation on survival rate. condition index (CI) , changes ofnutrient composition of different tissues, respiration and excretion of scallop ChlartnCs farreri were studiedin laboratory from Oct. 17 to Dec. 15 ,1997. Two groups (control and starvation with 200 individualseach) were cultured in two 2 m3 tanks, with 31 to 32 salinity water at 1 7 “C . Starvation effects were mea-sured alter 1 0, 20, 40 and 60 days. There was no mass mortality of scallops cf the two tanks and survivalrates of the control and starvation groups were 93 .5 % and 92.0 %, respectively. Starvation had strongeffect on the meat condition of the scallops, especially after 10 days; when relative lipid percentagedropped sharply while relative protein percentage increased. The impact of starvation on the oxygen consumption mtc (OCR) and the ammonia-N cxcretion mtc (AER) was obvious.     

SURFACE OZONE CHARACTERISTICS AT THREE STATIONS IN GAW OF WMO IN CHINA*

The characteristics of surface O₃ on clear days at Waliguan Observatory,Lin'an regional station and Longfengshan regional station in China were analyzed in this paper.The three stations belong to Global Atmospheric Watch(GAW)of WMO.There was obvious daily variation on clear days at Lin'an.with maximum(42.9 ppb)and minimum(20.3 ppb)of daily range appearing in spring and summer,respectively.The daily variation was more regular at Lonfengshan than at Lin'an.The maximum(about 27 ppb)appeared in autumn at Longfengshan.There was no obvious daily variation and also daily range was smaller in other seasons except weaker daily variation in summer at Waliguan.But the surface O₃ concentration(SOC)in summer was higher than that in winter at Waliguan.The SOC on clear days of summer at Waliguan was over 20 ppb higher than at Longfengshan and Lin'an.The global radiation and NO_x concentration were the main factors which control the SOC on clear days at Longfengshan and Lin'an.and played important role in different seasons and areas.The transportation of air flow around the area of Qinghai-Xizang(Tibet)Plateau was the main cause for high SOC and weak daily variation in summer at Waliguan.The similar effect of transportation was obtained at the Mauna Loa Observatory.The distribution characteristics of SOC increasing with height in the troposphere determined the difference of SOC between East China and West China.     

深圳建设现代化国际性城市的条件与策略

全球化时代,城市竞争是地区竞争的突出表现,国际性城市是大城市发展的目标取向。文章依据国际性城市的内涵与条件,对深圳的地理区位、市场体制、综合实力、人口及科教水平等因素进行了系统分析与客观评价,提出了未来城市建设的国际化策略,以期对深圳“二次创业”提供参考。     

台湾大青枣在钦州种植的气象条件分析

通过对台湾大青枣的生物特性及其气象条件进行分析，并指出影响其果品品质的主要气象因素及应对措施。     

新疆库木库里盆地砂(砾)岩型铜矿地质特征及其控矿条件分析

新疆库木库里盆地砂(砾)岩型铜矿位于东昆仑造山带西段，含矿地层为古近系渐新统石马沟组、新近系中新统石壁梁组与上新统红石梁组。铜矿带东西长约170km，南北宽10～60km。已发现铜矿体20多条，矿化体70多条。铜矿化主要受构造、岩性、岩相古地理、古气候等因素控制。矿床属陆相砂砾岩型铜矿。     

新疆卡拉麦里山变质碎屑岩型金矿地质特征及成矿条件分析

卡拉麦里山是尔准噶尔地区一个重要金成矿带，区内金矿类型较多，以变质碎屑岩型金矿为主．该类型金矿区域上受南部的卡拉麦里深断裂和北部的清水-苏吉泉大断裂控制，志留系、泥盆系和石炭系浅变质碎屑岩为区内主要赋矿地层，并与区内广泛分布的超基性岩有一定成因关系．近二年发现的双泉变质碎屑岩型金矿规模有望达到大型打开了东准噶尔地区的金矿找矿局面，启示该区寻找此类金矿有较大的前景．