关键词： 平面区域   不等式(组)   几何意义   两个变量   分析与探究   解题功能   化简  

摘要： 在一些题目中经常会出现关于两个变量的不等式(组),或者在推理化简过程中出现此类情形,那么此类问题解决的一个重要思路就是找出不等式(组)所对应的几何意义,即用平面区域分辨出变量在平面中的变化范围,从而抓住解题的契机,本文通过对几个典型问题的分析与探究,揭示平面区域的其他解题功能,供读者朋友参考.

摘要： Immune-mediated cholangiohepatitis (IMCH) is a subtype of immune-mediated hepatotoxicity (IMH) secondary to immune checkpoint inhibitor (ICI) that may present with histologic or even extrahepatic bile duct injury. Current society guidelines treat IMH uniformly. However, clinical reports have highlighted potential challenging sequelae in IMCH. Paucity of data exist for treatment strategies other than systemic steroids, with two published cases using budesonide. We present a case of IMCH responsive to budesonide with adjuncts.

关键词： 水质监测   化学需氧量(COD)   优化  

摘要： 为提高水质分析结果准确性,优化水质分析结果。本文以当前标准规定中的两种水质分析方法为例,分析这两种方法存在的缺点。针对重铬酸盐法提出加大取样量、控制温度的方法,对快速消解分光光度法提出样品空白法、样品取样前充分摇匀的方法,以期为相关人员提供参考。

关键词： 高中语文教材   女战士   茹志鹃   人情美   人性美   《百合花》   百合花   女性视角  

摘要： 《百合花》是统编版高中语文教材必修一的课文,是茹志鹃创作的短篇小说。它以女性视角写一位小通讯员送文工团的女战士到前沿包扎所,到达后向一位刚过门三天的新媳妇借被子的故事,表现了战争年代纯洁的人际关系,歌颂了人性美和人情美。作者在《写〈百合花〉的经过》中提到,小说里的人物、事件都不是真人真事,借被子这一情节纯属虚构。

关键词： Batteries   Lithium   Energy Storage   Batteries-Li-ion  

摘要： Solid polymer electrolytes (SPEs) are promising candidates for solid-state lithium-ion batteries. Potentially, they can be used with lithium metal anodes and high-voltage cathodes, provided that their electrochemical stability is sufficient. Thus far, the oxidative stability has largely been asserted based on results obtained with sweep voltammetry, which are often determined and reliant on arbitrary assessments that are highly dependent on the experimental conditions and do not take the interaction between the electrolyte and the electrode material into account. In this study, alternative techniques are introduced to address the pitfalls of sweep voltammetry for determining the oxidative stability of SPEs. Staircase voltammetry involves static conditions and eliminates the kinetic aspects of sweep voltammetry, and coupled with impedance spectroscopy provides information of changes in resistance and interphase layer formation. Synthetic charge-discharge profile voltammetry applies the real voltage profile of the active material of interest. The added effect of the electrode active material is investigated with a cut-off increase cell cycling method where the upper cut-off voltage during galvanostatic cycling is gradually increased. The feasibility of these techniques has been tested with both poly(ethylene oxide) and poly(trimethylene carbonate) combined with LiTFSI, thereby showing the applicability for several categories of SPEs.

关键词： Stabilization mechanisms   Leaching   Thermodynamic modeling   Ground granulated blast furnace slag   Powellite   Contaminated soils  

摘要： Excavation operations during construction produce millions of tons of soil sometimes with high leachable molybdenum (Mo) contents, that can lead to risks for both human health and the environment. It is therefore necessary to immobilize the Mo in excavated soils to reduce pollution and lower the costs of soil disposal. This paper studies the immobilization of Mo by three cementitious binders. To this end, one Ordinary Portland cement (OPC), one binder composed of 90% ground granulated blast furnace slag (GGBS) and 10% OPC, and one supersulfated GGBS binder were spiked with sodium molybdate at six different Mo concentrations from 0.005 wt% to 10 wt% before curing. In addition, to gain mechanistic insights, the capacity of synthetic calcium silicate hydrates (C-S-H) to immobilize Mo was studied. This study was completed by thermodynamic modeling to predict the immobilization of Mo at low Mo concentrations (<0.005 wt%). Paste leaching tests results showed that more than 74% of the initial Mo spike was immobilized by the three binders. The supersulfated GGBS binder consistently showed the highest retention levels (92.0 to 993%). The precipitation of powellite (CaMoO4) was the dominant mechanism of Mo retention in all binders and most leaching solutions were oversaturated with respect to powellite. Also, in C-S-H syntheses, Mo was largely immobilized (>95%) by the copredpitation of powellite. Thermodynamic modeling was in good agreement with measured values when the equilibrium constant of powellite was modified to LogK = -7.2. This suggested that powellite is less stable in cementitious environments than would be expected from thermodynamic databases. Moreover, modeling showed that, for a solution at equilibrium with portlandite or C-S-H, the Mo concentration is limited to 1.7 mg/L by powellite precipitation. In contrast, for a solution saturated with respect to ettringite, the threshold concentration for powellite precipitation is 6.5 mg/L. (C) 2021 Elsevier B.V. All r

关键词： 寺观教堂   宗教事务条例   民族宗教局   区分标准   民族宗教事务   《宗教事务条例》   机关党委   宗教活动场所  

摘要： 各市民族宗教局,机关各处室、机关党委,各直属单位:现将《山东省寺观教堂和其他固定宗教活动处所区分标准》印发给你们,请结合实际,认真贯彻实施。2021年9月29日山东省寺观教堂和其他固定宗教活动处所区分标准第一条为规范宗教活动场所设立审批和登记管理,根据《宗教事务条例》《山东省宗教事务条例》《宗教活动场所设立审批和登记办法》等有关规定,结合本省实际,制定本区分标准。

关键词： 业务类型   审计机关   创新业绩   统筹兼顾   预算执行情况审计   适应新环境   理论与实务  

摘要： 预算执行情况审计,在审计机关诸多审计业务类型中,一直居于比较重要的位置:经历多年发展,审计机关在预算执行方面审计了众多项目,积累了丰富经验,健全了若干规章,发挥着越来越重要的作用。在新时代,预算执行情况审计如何适应新环境、满足新要求、回应新期待、解决新问题、再创新业绩等,即如何深化预算执行情况审计,是审计理论与实务界高度关注的一个重要问题。

关键词： 草地贪夜蛾   玉米   金龟子绿僵菌CQMa421   防治  

摘要： [目的]探究真菌杀虫剂金龟子绿僵菌CQMa421与其他药剂混用对玉米草地贪夜蛾的防治效果。[方法]试验共设5个处理组,分别为金龟子绿僵菌CQMa421 80mL、金龟子绿僵菌CQMa421 30mL+5.7%甲维盐7g(-30%)、金龟子绿僵菌C QMa421 15mL+5.7%甲维盐9g(-10%)、5.7%甲维盐10g和空白对照,在草地贪夜蛾卵孵盛期至低龄(1~3龄)幼虫期时进行施药处理,然后对玉米进行活虫数、死虫数、虫口基数等进行调查。[结果]金龟子绿僵菌CQMa421及其混用处理施药后玉米都没有出现药害症状,对玉米生长安全;金龟子绿僵菌CQMa421+5.7%甲维盐减量防治效果显著。[结论]防治玉米草地贪夜蛾选择金龟子绿僵菌CQMa421与化学药剂混合使用效果更好。