鄂尔多斯盆地上二叠统石千峰组岩相古地理及时空演化

针对鄂尔多斯盆地石千峰组的勘探程度总体较低,所开展的沉积相等基础地质研究还不够系统、精细和完善,作者以现代沉积学理论为指导,根据岩石类型、沉积构造、剖面结构和地球化学标志,将研究区石千峰组划分为辫状河、曲流河、三角洲和湖泊4种沉积体系.以盆缘23条野外剖面和盆内众多钻井为基本资料,系统编制了石千峰组千5段-千1段岩相古地理图,其古地理展布及时空演化具有南、北物源特征,由北至湖盆中心具有冲积平原-三角洲平原-三角洲前缘-浅湖的远源古地理展布特征,由南至湖盆中心具有三角洲平原-三角洲前缘-浅湖的近源古地理展布特征.在千5期-千1期的古地理演化过程中,最大湖泛期为千3期.古地理展布特征亦反映了砂体平面展布及时空配置关系.     

南华北地区奥陶系古喀斯特特征及其储层前景

南华北地区奥陶系古喀斯特广泛发育,为油气成藏提供了有利条件.通过野外露头剖面观测、钻井岩心观察,奥陶系古喀斯特主要发育于下奥陶统亮甲山组和奥陶系顶部,表现为不整合面(风化壳)残积物、喀斯特角砾、溶蚀孔洞缝等特征.将奥陶系古喀斯特划分为同生期、表生期和埋藏期喀斯特三类,同时讨论了影响和控制奥陶系古喀斯特发育的因素,其中构造、岩性、气候和古地貌为主要因素.研究区受构造隆升控制的表生期喀斯特和同生期喀斯特在横向上分布连续,有利于喀斯特储层发育;另外,奥陶系埋藏期喀斯特广泛发育,也有可能形成有利储层.     

MPT-AES测定交联淀粉中磷含量的不确定度评定

建立了微波等离子体炬原子发射光谱法（MPT—AES）测定交联淀粉中磷含量的相应数学模型,对数学模型中的各个参数进行了不确定度来源分析,分别对A类不确定度（由测量结果的统计分布计算的不确定度）和B类不确定度（基于经验或其他信息的概率分布估计的不确定度）进行评定．按照国际通用方法对各个不确定度分量进行合成和扩展,得到该方法的不确定度评定结果．结果表明,不确定度的主要来源为工作曲线拟合线性方程和样品的称量．     

玉溪市生活饮用水微生物污染状况分析

目的:了解玉溪市2007年至2008年生活饮用水微生物污染状况.方法:按照国家卫生部2007年7月1日实施的<生活饮用水标准检验方法>进行检验.按<生活饮用水卫生标准GB5749-2006>进行评价.结果:玉溪市2007年至2008年生活饮用水检验结果合格率差异有显著性,其中微生物指标总合格率为87.73%,市政供水除与地表水细菌总数和总大肠菌群污染差别有显著性外,与山泉水、深井水均无显著性差异.结论:玉溪市生活饮用水仍存在问题,尤其地表水微生物污染严重,必需通过净化消毒处理,才能饮用.     

炼焦煤质量指标评价体系的研究

对我国青海、四川、新疆等地炼焦煤质量的工业指标、工艺指标、煤岩指标、焦炭显微结构组成(光学组织)和焦炭热性能进行研究,提出了一套包括挥发分、黏结指数和单种煤成焦显微结构组成评价炼焦煤质量的指标体系.该评价体系由质量控制指标、结焦性指标和揭示成焦质量指标组成.     

一种用于FPGA的单粒子翻转试验系统设计研究

单粒子翻转(SEU)试验是测试FPGA芯片抗单粒子翻转性能的重要方法.提出了一种用于测试FPGA芯片抗单粒子翻转性能的试验系统;该系统通过比对待测FPGA芯片输出数据序列和正确数据来判断是否发生数据翻转.如果发生数据翻转,则进一步统计翻转次数和翻转性质,从而能够较全面的测试FPGA芯片的抗单粒子翻转性能.运用该试验系统对某款FPGA芯片进行了单粒子翻转试验,测试结果显示该试验系统能够正确评估被测芯片的抗单粒子翻转性能.     

Inhibiting pain with pain— A basic neuromechanism of acupuncture analgesia

(i) The structure and function of the meridian (channel and collateral) described by ancient medical doctors may correspond to the blood circulation, nerve control and neurohumoral modulation of modern medicine. (ii) The needling, which can injure the tissue, is a noxious stimulation inducing pain. Acupuncture manipulation, such as lifting and thrusting, twisting and twirling, or electroacupuncture (EA) with the sufferable biggest intensity for patients should be a stronger pain stimulation. The needling sensation of soreness, numbness, distension and heaviness is a deep pain. (iii) There is an intrinsic analgesic system in brain, which centers around the periventricular and periaqueductal grey matter, contains endorphins as possible mediators, goes through the descending inhibition system in medulla oblon-gata, and acts on the gating mechanism in spinal cord. Itcould be producing analgesia while the system is activated. (iv) NRM might be a supraspinal center modulating pain, and the R-S neurons could form a basic circuit of negative feedback modulating pain. The discovery of excitatory-inhibitory reversible R-S neurons may give a neuro-physiological explanation for the double direction modulation of acupuncture at acupoint. (v) Non-noxious stimulation such as massage or stroking could excite type I and n afferent fibers, producing a weaker and transient analgesia through the spinal mechanism. When the acupoint is near the pain area, the afferent information from them could be converged on the same and neighboring spinal segments, the light acupuncture or low intensity of EA also has analgesic effects, showing acupoint specificity. But the acupoint specificity is not limited in a specially designated channel line, and it is closely related to the segment of innervation. (vi) While acupuncture manipulation of lifting and thrusting, twisting and twirling or a high intensity of EA is used, because the intensities of these stimulations exceed the threshold of afferent C fibers, they could fully excite Ⅲ(Aδ) and Ⅳ (C) afferent fibers, producing a strong and lasting analgesia, mainly through the supraspinal negative feedback mechanism modulating pain, it has curative effects. Therefore, the essence of acupuncture analgesia may chiefly be inhibiting pain with pain.     

Optical-field-induced Freedericksz transition of a nematic liquid crystal doped with diazophenyl

4[4'-(phenylazo)phenylazo]phenol was synthesized and characterized. Optical-induced Freedericksz transition of 5CB liquid crystal doped with trace diazophenyl was studied. It was observed that the doped 5CB dramatically decreased the optical field threshold, and the Freedericksz transition threshold occurred at optical intensity level of 0.3 mW/mm2 for the 12.5 μm thickness planar alignment doped 5CB, which is three orders of magnitude lower than that for the pure 5CB. This new phenomenon indicated that trans-cis isomerization of diazophenyl plays an important role in the decrease of the Freedericksz transition threshold.     

论旅游地的旅游环境质量评价

世界旅游业迅速发展的事实已经说明,旅游与环境的关系极为密切的微妙。尤其对于旅游接待地来讲,处于强势的旅游开发经营活动与处于弱势的环境相互作用,旅游开发经营对环境的负面影响,以及环境对旅游持续发展的制约,均已十分明显。因此,为促进旅游业的可持续发展,提高旅游业的经济效益、社会效益及环境效益,重要对策之一是大力优化旅游环境质量,其中,对旅游环境质量进行评价是旅游建设和保护的重要基础。     

预回复对08Al深冲钢板再结晶组织及织构的影响

利用X射线衍射技术(ODF分析)并结合光学显微镜和透射电子显微镜观察了本溪钢铁公司生产的08Al深冲钢板的织构和组织,研究了预回复对其再结晶织构及组织的影响·结果表明:预回复退火具有推迟冷轧08Al深冲钢板再结晶的作用,但并未改变08Al深冲钢板的再结晶形成机制·08Al深冲钢板在预回复下再结晶γ纤维织构增强的原因主要是由于预回复降低了形变储能,抑制了其他取向晶核的形成及长大,促进了再结晶γ取向晶粒的择优生长