赤霉酸对切花月季枝条生长发育的影响

用50～100ms／L的赤霉酸（GA3）溶液处理不同发育程度的切花月季枝条，结果表明，GA3处理可使花枝长度明显增长，开花期提前．其中以100mg／L的GA3用量较为经济有效，且处理时间越早，效果越明显．     

特低渗透砂岩油藏初期含水变化机理实验研究

针对低含油饱和度砂岩油藏开发初期含水现象，以室内物理模拟实验为手段，通过水驱过程中含水饱和度和含水率的变化，研究了特低渗透砂岩油藏的水驱油特征。研究结果表明，特低渗透砂岩油藏的初期含水率是由油藏原始含水饱和度决定的。在低含油饱和度条件下，油藏初始含水率存在一个不为0的稳定波动阶段，并且可以根据室内相对渗透率实验得到的一维含水率曲线和油藏原始含水饱和度来预测油井初期含水率。     

The Symbolic Significance of the Rose in A Rose for Emily

A Rose for Emily is one of the masterpieces of William Falkner. This paper intends to analyze the symbolic meaning of the rose, and the relationship between the rose and Emily, trying to provide people a thorough understanding of the theme and the heroine's personality.     

增设建筑工程偷工减料罪之建议

工程重大安全事故的发生很大程度上是因为施工过程中的偷工减料造成的,刑法只是处罚造成重大事故结果后的相关责任人,却对造成重大事故根源的“偷工减料”行为没有给予相应的处罚.只要工程不坍塌或不报废,机械设备不毁坏,人员不伤亡,即使有重大质量问题也无法依据刑法定罪处罚.增设工程偷工减料罪的意义就在于规范建筑市场,从根源上最大限度的减少工程安全事故的发生.     

A Robust Measure of Uncertainty Importance for Use in Fault Tree System Analysis

The analysis of probabilistic fault trees often involves the investigation of events that contribute both to the frequency of the top event and to the uncertainty in this frequency. This paper provides a discussion of three measures of the contribution of an event to the total uncertainty in the top event. These measures are known as uncertainty importance measures. Two of these measures are new developments. Each of the measures is shown to have unique advantages and disadvantages. The three measures are based on, respectively, the expected reduction in the variance of the top-event frequency should the uncertainty in an event be resolved, the same measure based on the log frequency, and a measure based on shifts in the quantiles of the distribution of top-event frequency.     

徽商兴起繁荣与文化发展进步

徽商,中国近代重要的经济现象和文化现象,其产生与发展有着深厚的社会背景和文化背景;徽商,它的繁荣与昌盛,又是与重视文化与教育密不可分的.现在回顾与研究这一历史,对于全国山区综合开发和贫困地区脱贫致富具有重要的现实意义.     

Confidence intervals for the symmetry point: an optimal cutpoint in continuous diagnostic tests

Continuous diagnostic tests are often used for discriminating between healthy and diseased populations. For this reason, it is useful to select an appropriate discrimination threshold. There are several optimality criteria: the North‐West corner, the Youden index, the concordance probability and the symmetry point, among others. In this paper, we focus on the symmetry point that maximizes simultaneously the two types of correct classifications. We construct confidence intervals for this optimal cutpoint and its associated specificity and sensitivity indexes using two approaches: one based on the generalized pivotal quantity and the other on empirical likelihood. We perform a simulation study to check the practical behaviour of both methods and illustrate their use by means of three real biomedical datasets on melanoma, prostate cancer and coronary artery disease. Copyright © 2016 John Wiley & Sons, Ltd.     

白藜芦醇和硝普钠对月季切花的保鲜效应

为筛选出高效、低毒、无污染的月季切花保鲜剂,试验探讨了白藜芦醇和外源NO供体硝普钠对月季切花保鲜的影响。结果表明：含有50μmol·L^-1白藜芦醇和100μmol·L^-1硝普钠的保鲜剂均能有效调节切花水分平衡,改善切花体内的水分状况,减轻细胞质膜透性,降低膜脂过氧化水平,从而延缓切花衰老进程,延长瓶插寿命。对白藜芦醇和硝普钠保鲜效应的机理进行了初步探讨。     

减税及优化中央与地方分配关系——关于增强长三角区域发展活力的分析

进入新世纪以后,长三角两省一市经济增长速度在全国的位次出现下降。即使国务院于2008年出台关于长三角地区改革开放发展指导意见后,这一局面并未有较大改善的迹象。当前亟需中央政府采取减税,以及优化中央与地方分配关系等政策,以让长三角“下更多的金蛋”。     

中低渗油藏化学驱方案优化与矿场对比评述

以某中低渗砂岩油藏P 区块为例,为提高其高采出程度、特高含水阶段油藏采收率,在油藏工程、油藏精细描述及物理模拟研究的基础上,运用三次采油数值模拟技术开展化学驱方案优化设计研究,设计了24 个聚合物驱方案、30 个聚合物/表面活性剂驱方案和33 个三元复合驱方案,用全因素优化方法对注采参数和注入方式进行优化。研究结果表明,主段塞保持相对较高的化学剂浓度和PV 数有利于提高采收率,适量增加高浓度聚合物前置段塞和低浓度聚合物后置段塞有利于保证化学驱的增油效果,优化方案为采用“阶梯四段式”注入方式的聚合物/表面活性剂驱方案,试验区提高采收率11.62%。与已实施的主要化学驱试验相比,油藏条件、聚合物黏度、井网井距及注入量等的差异是产生化学驱开发效果差异的关键因素。