谈Joshi水平井产量公式

认为 Joshi在推导水平井的产量公式时 ,把水平井的流动视做向一个点汇的垂直流动与向一与水平井等长的垂直裂缝的水平流动的代数相加 ,这种简化处理是不对的 ,物理解释是牵强的 ,所给的水平井产量公式是错误的 .文中在保证地层内具有稳定流动的基础上 ,利用保角变换对顶底不渗透油藏中心有一口水平井的产量公式进行了重新推导 ,给出了水平井产量公式的修正公式 ,并且利用等值渗流阻力法进行了解释     

提高Φ1600冷锯机锯片耐用性的研究

通过对影响锯片耐用性的六种因素的分析，提出，提高Φ1600冷锯机片耐用性的六种措施，即增大锯齿根部园角半径；改善锯片加工工艺；选取合理的齿形；表面滚压处理；锯齿激光强化处理；选择合理的进锯速度。     

壳牌煤气化技术的可行性分析

通过对SHELL煤气化技术介绍,以及同TEXACO煤气化特点对比,得出SHELL煤气化技术的可行性。     

对师范学院实施俱乐部型体育教学模式的探讨

通过献调研，从实施俱乐部型体育课教学模式的含义、组织形式、存在困难、发展的对策、教学的管理、经费来源等方面进行了初步研究和探讨．认为俱乐部型体育课教学模式是当前高校一种较理想的体育教学模式。     

基于扩展量测的球坐标系中水下目标跟踪算法的研究

基于自适应高斯模型，提出了球坐标系中扩展量测的水下目标跟踪，导出了目标模型和目标运动状态的坐标转换公式，推导了基于扩展量测的球坐标系目标跟踪算法，给出了Monte carlo仿真结果。结果表明：本文提出的跟踪算法不但能够提高目标距离的稳态跟踪精度，而且能够提高目标方位角和俯仰角的稳态跟踪精度，改善系统的动态收敛特性。     

用膜片钳技术测定植物原生质体膜电位

使用膜片钳测量了石防风、烟草及小麦原生质体的膜电位，并与常规膜电位方法做了比较．结果表明，膜片钳法测得的原生质体膜电位为内负外正，低于－５０ｍＶ；常规的插入法测得的为内正外负，大于＋１０ｍＶ．与插入法测得的完整细胞膜电位（低于－１００ｍＶ）相比，膜片钳法测得的原生质体膜电位更为接近．两种方法在原生质体膜电位测量上的差别，可能与原生质体受损的程度不同有关．     

三种预测油气田产量数学模型的比较

系统地介绍了三种预测油气田产量的数学模型 ,即逻辑斯蒂模型、胡 -陈 -张模型和 Wang- Li模型 .从数学模型的建立、模型的特点及适用范围对这三个模型进行了分析 ,可为油气田的实际生产选择适宜的预测模型提供了依据     

Effect on membrane transport in the erythrocytes by band 3 cross-linking

Band 3 and glucose transport protein (GluT1) are two kinds of important proteins in the human erythrocyte membranes. Bis(sulfosuccinimidyl)suberate (BS³), an impermeable cross-linker of band 3, inhibited NO₂ ⁻ transport, showing that anion exchange is affected by the association state of band 3 in the intact erythrocyte membranes. At the same time, the rates of glucose transport of both exit and entry declined. The amount of monomers of band 3 was decreased after treatment of the erythrocytes with BS³, but there was no change in GluT1 according to the SDS-PAGE patterns. This demonstrates that band 3 and GluT1 would be linkaged together in the erythrocyte membranes for the requirement of rapid and cooperative performance of physiological functions of the membrane proteins.     

Stratigraphy and paleontology of the marine Jurrassic strata in Vietnam

Marine Jurassic strata in Vietnam have yielded characteristic ammonites and occur in: (1) west Quang Binh Province located in the eastern margin of the Nam Theun Basin (the main part of which is located in Middle Laos); (2) the Nong Son Basin situated in the north of the Kon Tum Geoblock; (3) the Da Lat Basin, the largest Jurassic basin in Vietnam, extending from the southern margin of the Kon Tum Geoblock to southeast of Ho Chi Minh City. In the first two, Lower Jurassic marine beds occupy the lower part of the section and grade up into Middle Jurassic red beds. In central Da Lat Basin the section consists completely of marine strata containing many ammonite levels dated from Early Sinemurian to Bajocian, whereas the marginal basin section is like the first two areas. Based particularly on biostratigraphical evidence, a marine transgression is considered to have entered the Indochina Block as early as the Late Hettangian. During the early transgression the fauna was distinctly endemic, showing the separate character of the basins, but since the Late Sinemurian, communication between the Da Lat and other basins was established; the marine regime in Da Lat Basin ended around the Late Bathonian.     

阻尼振子的起伏频谱及扩散系数

本文讨论一个最简单的耗散系统，即一个谐振子与热库耦合的系统。给出Ｌａｎｇｅｖｉｎ力Ｇ（ｔ）及算符ａ（ｔ），ａ￣＋（ｔ）的定义，由此算出阻尼振子的起伏频谱及扩散系数。其结果与Ｗｉｇｎｅｒ－ｗｅｉｓｓｋｏｐｆ近似下求得结果完全一致。