Simulation Study of Different Modes of Miscible Carbon Dioxide Flooding

Carbon dioxide flooding has been applied worldwide as a successful enhanced oil recovery. Carbon dioxide flooding may be applied as a continuous injection or as water-alternating-gas (WAG) process. Optimization of the injection mode of carbon dioxide is important for economical field application. This paper focuses on using a fully compositional simulation model for “AEB-3C” sandstone oil reservoir of one of the Western Desert oil fields in Egypt to predict the impact of CO₂ miscible flooding on the reservoir oil recovery and net present value (NPV), to define the best mode of operation that is straight CO₂ injection or water alternating gas (WAG) processes and to show the difference between pure and impure CO₂. Moreover, several sensitivity runs were done on the oil price to show minimum profitable value of oil price when applying such a tertiary method in the subject field.The reservoir under study has been producing under a successful water flooding project since May-2010. The recovery factor by the end of water flooding project is predicted as 32%. CO₂ flooding processes have started by the end of water flooding. A significant increase in the oil recovery factor was noticed due to applying this method; it reached up to 57%. Comparisons between different modes of operations were shown which showed better results when applying WAG process than that with straight CO₂ injection. Moreover; sensitivities were done on the cycle periods in WAG processes and showed increase in the recovery factor with shortening the cycle periods. In addition to a comparison between pure and impure CO₂ which showed very close results.     

建筑能耗动态模拟气象资料的开发与应用

根据我国现行气象站观测的实际状况以浙江气象观测资料为例,按DOE-2软件数据输入格式要求,建立了典型气象年(Typical Meteorological Year)气象资料开发的流程和方法,重点探讨无太阳辐射观测城市的逐时辐射量推算问题,开发了满足建筑能耗动态模拟计算的气象要素资料集,为有关标准实施提供科学基础.该文的研究成果已在浙江省建筑节能设计标准编制中应用,同时为太阳能资源的科学评估提供了客观的方法.     

Elementary Psychology for Eighth Graders: Four Years Later.

In September 1954, the author introduced a course in elementary psychology as an 8th grade elective in a junior high school in Buffalo, New York. This article reports a summary of results from responses to an information questionnaire distributed in May 1959 to seniors who took the original psychology class. Replies were split 50-50 as to whether or not students' interest in the subject had continued. When asked whether or not the course had wrought any changes in themselves, 19 (of 20) claimed that their attitudes and opinions had changed, 17 reported changes in personal relationships, and 10 affirmed their behavior patterns had changed. The unit remembered the most was the one on hypnotism, followed by the psychology of advertising, dreams, ESP, and personality development. It is noted that because of the numbers of students who elect this course, additional classes with larger class sizes have been opened. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

计算机2000年问题及其解决方法

本文首先简要回顾了２０００年问题的起源，然后重点讨论了２０００年问题的特点和相应的解决方法，最后对政府在２０００年总理２的解决过程中应起的作用也做了初步的探讨 。     

含趋势项的周期迭加预报模式

提出一种含趋势项的周期迭加模式，并将它用于鄱阳湖年最高水位的长期预报，效果较好，明显优于不含趋势项的常规周期迭加模式。     

小水电水库优化调度技术（5）──应用确定性动态规划绘制水电站水库加大出力线

选取大于水电站设计保证率年份的径流系列，按确定性径流过程动态规划法计算发不同最优加大出力时的时段初水库蓄水，从而绘制水库调度的加大出力线，以充分利用丰水年的来水量．     

树木年轮中~(14)C比度涨落的研究

用液体闪烁法测量了一棵生长在北纬68°地区白云杉的45圈树年轮(公元1881～1925年)中~(14)C放射性比度随年轮的变化。实验数据表明,~(14)C比度有10‰的涨落,并与太阳黑子数负关联。本文讨论了该现象的地球物理原因。     

民国时期商品包装图样与其他图样辨析

民国时期的商品包装图样与商标、产品标贴、年画及广告画共同表现了当时的时代特征与人文思想。它们之间有许多相似之处,但如果从其构图设计、创作风格以及画面内容等多方面仔细辨别,可将其分辨清楚。     

Outcomes one year after a road accident: Results from the ESPARR cohort

Objective

Reducing the rates of death, trauma and sequelae associated with road accidents is the prime goal of road safety authorities, and success requires having data on victims’ outcomes in the long term. The present study examined the outcome of adult road accident victims one year after their accident.

Design

A follow-up study.

Methods

The cohort comprised 886 injured road-accident victims, aged ≥16 years, and living in the Rhône administrative Département, France (taken from the ESPARR Cohort). Data were collected on victim characteristics at the time of crash, and self-reported outcomes one year later. The population of respondents at the one-year questionnaire follow-up was divided into two categories according to injury severity, as mild-to-moderate (M.AIS < 3) or severe (M.AIS 3+). Qualitative variables were compared between these 2 groups using Chi² or Fisher exact tests.

Results

At one year post-accident, 45% of the mild-to-moderate injury group versus only 20% of severely injured subjects reported full recovery of health (p < 0.001). 20% of the cohort, as a whole, reported permanent pain. More than half of the severely injured subjects reported that the accident had had an impact on the everyday life of their family; this was twice as many as in the mild-to-moderate injury group (55% vs. 22%). Most of the severely injured reported impact on leisure, projects and emotional life: 20% reported relational difficulties in the couple, 16% reported impaired sexual life, and the rate of separation was significantly higher than in the mild-to-moderate injury group (5% vs. 1%; p < 0.001). Mean time off work was significantly longer in the severe injury group: 245 ± 158 days vs. 75 ± 104 days (p < 0.001); and 32% of the severe injury group (p < 0.001) who had stopped work had not returned at 1 year, compared to 5% of the mild-to-moderate injury group.

Conclusions

One year after a road accident, the consequences for victims remain significant. In terms of physical impact, pain frequently persists, impairing daily life for many. There is an elevated rate of chronic PTSD (post-traumatic stress disorder) and a non-negligible impact on affective and occupational life.     

县级电网“十二五”规划研究

以某县为例,进行了规划区现状分析、现状电网分析、负荷预测、电源规划、电力平衡及电网规划方案论证。