储层石蜡沉积预测技术研究与应用

在油田开发过程中 ,由于油藏温度、压力等条件的变化 ,高含蜡原油在近井带容易产生石蜡沉积 ,堵塞地层孔隙或裂缝 ,严重影响油田开采 ,尤其对于低渗油田 ,伤害特别严重。文中应用理想溶液理论、质量守恒和能量守恒等基本原理 ,建立更符合油田实际情况的油藏中石蜡沉积预测数学模型 ,开发一套方便实用的油藏中石蜡沉积预测软件系统FPOS1 0。在此基础上 ,应用室内实验数据和现场数据对吉林新民油田油井石蜡沉积情况进行预测和现场拟合 ,确定新民油田临界石蜡沉积半径为 2 5m ,快速、准确地为现场清防蜡措施提供理论依据。     

报纸零售机的设计

针对国内情况,设计一个能识别投入的硬币面额大小和数量的街头报纸零售机,该报纸零售机能根据投入的硬币面额大小和数量而确定是否送出报纸和找回多余的零钱。此报纸零售机全硬件设计,电路简单,功能稳定,可靠性强,有一定的应用价值。     

手机广告模式与计费方式探讨

随着手机的普及和移动互联网的发展,手机具备了巨大的广告价值潜力。我国的手机广告产业发展处于初期阶段,手机平台巨大的广告潜力尚未得到充分认识和合理利用。本文将以手机广告市场的宏观现状、趋势和广告行情为基础,对中国手机广告产业的商业模式和计费方式进行探讨。     

小兴安岭北部新民金矿床地质特征及成因

新民金矿床地处小兴安岭-张广才岭多金属成矿带北缘，矿床矿体赋存于光华组长石砂岩、粉砂岩、泥质粉砂岩夹凝灰岩中；金矿化三要表现为含矿岩石发生强烈硅化、黄铁矿化、毒砂矿化和金矿化，矿体呈脉状、扁豆状、透镜状等，规模相对较小；矿床形成明显与特定岩性有关，受断裂构造控制，矿石矿物组成简单且含量较低，矿石组构特征显示其属于浅成（低压）低温热液成因。     

林纾“白话道情”考论

自林纾“五四”前夕声称庚子年曾为《杭州白话报》写作“白话道情”，迄今无人查证，致使其本来面目长期以来不为人知。1901年《杭州白话报》刊发的署名“竹实饲凤生”的六种“道情”，应是林纾之作。襄助《杭州白话报》，创作“白话道情”，以白话开民智，以通俗文艺振民气，且曾产生了广泛的社会影响，是20世纪初年的壮年林纾确曾有过的一段白话文学创作经历。《杭州白话报》“白话道情”之考论，还原了林纾作为晚清开风气之先的启蒙白话报和白话文学先驱者的本来面目。     

Preference for newspaper size

The past few years has seen a change in the size of newspapers, with publishers moving to a smaller size format. Five ‘standard’ newspaper sizes are used in different countries: Broadsheet, Rhensch, Tabloid, Tall Tabloid and Berliner. These papers vary in both width and height of pages and hence there are implications for human reading comfort, which may be dependent on reading location such as on a lounge chair or on a train. Experiments were carried out to determine preferences for the different sizes and to relate these preferences to the geometric characteristics of the newspapers. For both comfortable and cramped/uncomfortable reading conditions, the rank order of preference for paper types was, from least to most-preferred, Broadsheet, Rhensch, Berliner, Tall Tabloid and Tabloid. Preferences were much stronger when determined in cramped/uncomfortable reading conditions, where most comparisons were significantly different. There was good correlation between participant ratings on several scales and preference, where most factors were related to comfort of holding and controlling the paper.     

Thermal inertia of newspaper sandwiched aerated lightweight concrete wall panels: Experimental study

A short term experimental investigation on the thermal inertia: time lag and decrement factor of aerated lightweight concrete (ALC) wall panels is the main purpose of this study. ALC wall panels of different density and different aerial intensity of newspaper sandwiched were produced and erected on a prototype house. All wall panels were installed facing east direction and subjected to natural environment or tested under transient condition. The inner and outer surface temperatures of the wall panels were recorded at 3 min interval, 24 h a day. Time lag and decrement factor were computed from the surface temperatures recorded. The results showed that newspaper sandwiched ALC panel has greater time lag and lower decrement factor compared to ordinary ALC panel. It is found that time lag and decrement factor were influenced by the thermal diffusivity value of the wall panel. The thermal inertia property of the panels was negatively related to its thermal diffusivity.     

Different perspectives: A comparison of newspaper articles to medical examiner data in the reporting of violent deaths

This study compared violent death information reported in state-wide newspaper articles to the medical examiner reports collected for a state public health surveillance system—the National Violent Death Reporting System (NVDRS). While suicides accounted for 83% of deaths in the NVDRS database, more than three-quarters (79%) of violent deaths reported in newspaper articles were homicides. The majority of the suicide incidents were reported in 1-2 newspaper articles whereas the majority of homicide incidents were reported in 11-34 articles. For suicide incidents, the NVDRS reported more circumstances related to mental health problems while newspaper articles reported recent crisis more often. Results show that there is a mismatch in both frequency and type of information reported between a public health surveillance system (NVDRS) and newspaper reporting of violent deaths. As a result of these findings, scientists and other public health professionals may want to engage in media advocacy to provide newspaper reporters with timely and important health information related to the prevention and intervention of violent deaths in their community.     

Newspaper sandwiched aerated lightweight concrete wall panels—Thermal inertia, transient thermal behavior and surface temperature prediction

Experimental investigation on aerated lightweight concrete (ALC) wall panels in terms of thermal inertia, transient thermal behavior and surface temperature prediction using finite difference method (FDM) are the main focus of this study. ALC wall panels of different density and different aerial intensity of newspaper sandwiched were produced and installed on a prototype house. The ALC wall panels were facing east direction and subjected to Malaysia natural environment condition. The inner and outer surface temperatures of the wall panels were recorded at 3 min interval, 24 h a day for a period of one year. Time lag and decrement factor were computed from the surface temperatures recorded. The results showed that thermal diffusivity has a positive relationship to the thermal inertia of ALC wall panels. FDM was used to predict the surfaces temperature and the predicted temperature was close to the observed temperature. The average differences between the observed and the predicted outer wall surface temperature lied between 1.4 and 2.4% whereas for the inner wall surface, the range was 1.3-2.2%. Greater deviations were detected on the predicted outer surface temperature could be due to some unaccounted factors such as wind direction and relative humidity in the present FDM.     

《新民丛报》与《民报》论战败因分析

戊戌变法失败以后，改良派与革命派进行了针锋相对、旷日持久的大论战。《新民丛报》在与《民报》的论战中违背了历史潮流，在论战方法、整体实力上都处于劣势，最终因失败而停刊。探讨其失败的原因，对于当今舆论宣传不无启迪。