简易控制火箭靶弹总体设计

为模拟火箭靶弹平飞和俯冲类目标的运动特性,设计了火箭靶弹总体方案,建立了火箭靶弹总体设计数学模型,进行了火箭靶弹参数优化设计.基于大射程火箭弹,通过调整原型火箭弹气动外形和结构组成,加装鸭式控制舵面,进行俯仰角程序控制,在被动飞行段实现有攻角飞行,可延长滞空时间,实现准平飞弹道.简易控制火箭靶弹具有高供靶精度、低成本和低风险等显著特点.     

流体势与油气运聚规律研究——以孤东地区为例

流体势是地下流体所有能的综合表现,不同的流体(如油、气、水)在各自的势场作用下,有各自的势场分布规律运动.通过研究地下流体势空间分布模式,可确定盆地流体系统构成,提高对油气运移规律的认识,明确预测有利油气聚集区,提高钻探成功率.研究表明,孤东地区地下流体势类型分为高势区、低势区,高势区分布与活跃生油洼陷分布一致,是孤东地区油气成藏的主要烃源区和动力源区.低势区与目前的油气田吻合较好.由此可依据流体低势区来预测新的油气聚集部位.     

成岩作用过程综合模拟及其应用

该文根据成岩作用过程(process oriented)模拟的原理,综合考虑了温度、压力、流体和时间4种因素对成岩作用的影响,通过模拟成岩参数镜质组反射率、古地温、伊/蒙混层中蒙皂石的含量、自生石英百分含量和甾烷异构化率在时空上的变化规律,进而模拟一个地区的成岩史并预测成岩阶段的展布特征;然后根据成岩作用对生、储、盖层的控制作用以及成岩史与构造发育史的匹配关系,确定有利的勘探区域。最后,文中以渤海湾盆地南堡凹陷老爷庙地区深层为例说明了这一方法的应用。     

基于TOUGHREACT模拟分析黄铁矿对酸法地浸采铀的影响

酸法地浸采铀过程中,铀矿的伴生矿黄铁矿作为非目标矿物会消耗氧化剂和酸.为探明酸法浸铀过程中因黄铁矿溶解产生的变化规律,以巴彦乌拉铀矿采铀过程为例,采用六注二抽的"网格式"井型构建二维酸法地浸采铀模型进行模拟研究,在抽注平衡的条件下,模型中只考虑黄铁矿(FeS2)、沥青铀矿(UO2)与石英(SiO2).结果表明:1)10...     

Memory and the Reporting of Remittance in a Sample of Elderly Persons in Thailand

Accurate reporting of sources of income is needed in studies of intergenerational transfers and welfare of the elderly. The objective of this paper is to investigate how memory in the elderly is related to the reporting of remittances received from their children in Thailand. Using data from a longitudinal study of 1036 persons age 60 to 93 in a province in Thailand, the influence of a word recall (verbal learning and recall), and nickname recall (verbal learning and recall) on reporting of remittance was assessed. Initially, both measures were positively and significantly related to the reporting of remittance. The results remained significant only for the nickname task after controlling for education, wealth, living arrangements and disability. The results highlight the importance of cognitive issues in the quality of data and the need for attention to memory in questionnaire design.     

Vitamin C Enhances Vitamin E Status and Reduces Oxidative Stress Indicators in Sea Bass Larvae Fed High DHA Microdiets

Docosahexaenoic acid (DHA) is an essential fatty acid necessary for many biochemical, cellular and physiological functions in fish. However, high dietary levels of DHA increase free radical injury in sea bass (Dicentrarchus labrax) larvae muscle, even when vitamin E (α-tocopherol, α-TOH) is increased. Therefore, the inclusion of other nutrients with complementary antioxidant functions, such as vitamin C (ascorbic acid, vitC), could further contribute to prevent these lesions. The objective of the present study was to determine the effect of vitC inclusion (3,600?mg/kg) in high DHA (5?% DW) and α-TOH (3,000?mg/kg) microdiets (diets 5/3,000 and 5/3,000?+?vitC) in comparison to a control diet (1?% DHA DW and 1,500?mg/kg of α-TOH; diet 1/1,500) on sea bass larvae growth, survival, whole body biochemical composition and thiobarbituric acid reactive substances (TBARS) content, muscle morphology, skeletal deformities and antioxidant enzymes, insulin-like growth factors (IGFs) and myosin expression (MyHC). Larvae fed diet 1/1,500 showed the best performance in terms of total length, incidence of muscular lesions and ossification degree. IGFs gene expression was elevated in 5/3,000 diet larvae, suggesting an increased muscle mitogenesis that was confirmed by the increase in the mRNA copies of MyHC. vitC effectively controlled oxidative damages in muscle, increased α-TOH larval contents and reduced TBARS content and the occurrence of skull deformities. The results of the present study showed the antioxidant synergism between vitamins E and C when high contents of DHA are included in sea bass larvae diets.     

子宫动脉化疗栓塞术治疗宫颈妊娠23例临床观察及护理

【摘要】目的 总结子宫动脉化疗栓塞术治疗宫颈妊娠患者的临床观察及护理经验。方法 23例诊断为宫颈妊娠并行子宫动脉造影术及化疗栓塞术的患者在介入治疗全过程中进行精细临床护理干预，包括术前对患者进行心理辅导和支持，介绍介入治疗的重要性、安全性和优越性，缓解患者焦虑、恐惧情绪，以更好地配合手术；术中严密观察生命体征和过敏反应发生情况；术后严密观察并发症症状。结果 22例患者介入术后1个月复查血β HCG降至正常，B超检查子宫颈恢复正常大小，1例原发性宫颈妊娠而后继发绒毛膜癌，介入治疗后2个月行子宫全切术，术后1周复查β HCG降至正常。未发生与治疗及护理相关的并发症。结论 对患者进行系统有效的护理取得了良好效果，有效地预防了并发症的发生，子宫动脉栓塞术可把组织出血控制在最小范围，保留了患者的生育能力，提高了生活质量。

     

变压器储油柜存在主要问题分析

介绍了变压器储油柜的主要结构形式,针对目前大型电力变压器常用类型储油柜的特点,根据现场实际运行、检修经验,对储油柜的安装、补油及常见问题进行了说明、分析,并提出了预防措施.