关键词： 调控   其他   费用   经验  

摘要： PPP项目的工程建设其他费用一般在可行性研究阶段由可行性研究报告的编制单位已进行编制,但在项目公司成立之后,根据项目建设情况的需要,会发现工程建设其他费用包含的项目名称及其费用并不能够完全指导PPP项目的实施,为此,工程建设其他费用的项目名称和费用需要通过合理的调控来正确指导PPP项目的实施。后期进行立项调整变更纳入PPP项目库,确保手续完善更加合规。

关键词： Grinding chatter   Wheel regeneration   Distributed grit dullness   Specific energy waves   Stability  

摘要： Regenerative chatter is a serious problem in machining. It is an unstable relative vibration between the workpiece and the cutting tool that adversely affects virtually all chip formation processes. This paper addresses regenerative chatter in grinding, which is one of the most widely used abrasive processes today. As a result of significant tool wear in grinding, surface regeneration (which is a prerequisite for regenerative chatter) can occur not only on the workpiece but also on the grinding wheel. This article is concerned with the regenerative mechanism by which wheel-related instability develops. In the present study, the role of distributed grit dullness alone is explored. A new chatter model is formulated and validated by both numerical simulations and experimental data. The new theory accurately predicts the existence of stable regimes in grinding, for the first time. This is in contrast to the published literature where the consensus has been that grinding cannot be stable with respect to wheel regeneration. Consequently, the present contribution enables a novel opportunity to increase the productivity of industrial grinding operations. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://***/licenses/by/4.0/).

关键词： 相似三角形   平行四边形   圆   反比例函数   求解  

摘要： 相似三角形是中考中的必考内容,也是初中几何中非常重要的知识点之一,主要内容包括相似三角形的性质、判定及应用等,在中考中的考察形式综合多样,常与平行四边形、圆、反比例函数等知识结合起来进行考察,对于学生而言,有必要掌握其综合应用,以及解决这类问题的方法和技巧.下面进行举例说明,让我们共同来探索一下这类问题的解法和特点。

摘要： 在每年全球新发恶性肿瘤中,原发性肝癌居于第4位,同时也是恶性肿瘤有关死亡事件的第2位原因[1],其中我国新发病例约40万,占比达到50％,严重威胁着人民的生命健康[2].而且原发性肝癌早期症状不典型,大多数患者确诊时已处于晚期无法进行手术治疗,只有20％的患者具有手术机会或能够耐受手术[3],所以针对肝癌的非手术治疗方式也是治疗该恶性肿瘤的重要组成部分,现今临床上主要包括射频消融(radio frequency ablation,RFA)、肝动脉栓塞化疗(transcatheter arterial chemoembolization,TACE)、无水酒精注射(percutaneous-ethanol injection,PEI)、微波消融(microwave ablation, MWA)、靶向治疗、免疫治疗.在中晚期肝癌患者中,需要进行非手术治疗方式的联合应用,发挥协同抗肝癌效应,延长患者的无瘤生存期和生命[4].

关键词： 国家税务总局   相关费用   加计扣除   研发项目   研发费用加计扣除政策   研发费用资本化   企业研究开发费   税前加计扣除政策  

摘要： 《国家税务总局关于进一步落实研发费用加计扣除政策有关问题的公告》(国家税务总局公告2021年第28号,以下简称28号公告)第三条对其他相关费用限额计算的问题作了新规定。该条规定调整优化了“其他相关费用”限额的计算方法,由原来《国家税务总局关于企业研究开发费用税前加计扣除政策有关问题的公告》(国家税务总局公告2015年第97号)规定的按照每一研发项目分别计算“其他相关费用”限额改为所有研发项目统一计算“其他相关费用”限额,允许多个项目“其他相关费用”限额之间调剂使用。

关键词： 脑梗死   纤维蛋白原   凝血指标   相关性  

摘要： 目的:探究脑梗死患者FIB与其他凝血指标存在的相关性.方法:选取2020年1-12月本院神经内科收治的经检查确诊为脑梗死患者230例作为病例组,另选同期健康体检者230例作为对照组,分别对两组的凝血指标进行测定,并对脑梗死患者FIB和其他凝血指标进行相关性等分析.结果:脑梗死组的PT、INR及FIB均明显高于对照组,差异均有统计学意义(P＜0.05).脑梗死组的PT％明显低于对照组,差异有统计学意义(P＜0.05).FIB与APTT成正相关(r=0.193,P＜0.05),与TT成负相关(r=-0.400

关键词： Metabolites  

摘要： In the present paper, for the first time, the electrochemical behaviour of nicotine metabolite nicotine N-oxide (NNO) on static mercury dropping electrode (SMDE) and mercury meniscus modified silver solid amalgam electrode (m-AgSAE) has been reported. Nicotine N-oxide is reduced forming one peak at the potential -0.78 V on SDME and -0.86 V on m-AgSAE in Britton-Robinson buffer medium at pH 4.5 using cyclic voltammetry (CV). One electron and one proton take part in the reaction of NNO reduction. Calibration graphs for NNO determination using linear sweep voltammetry (LSV) on SDME and square-wave voltammetry (SWV) and differential pulse voltammetry (DPV) on m-AgSAE were obtained. Limit of detection (LOD) is 0.13 mu M on SDME, and 0.16 mu M (SWV) and 0.29 mu M (DPV) on m-AgSAE. Since NNO can be used as an analytical form for nicotine voltammetric determination, so the developed methods were applied for the analysis of pharmaceutical preparations, and the recoveries from 97.3% to 104.6% were achieved. Also, the elaborated methods were used in the analysis of biological fluids, and tobacco products. The obtained results were compared to those indicated in the certificates of drugs analysis, and to the results, obtained by reference methods (HPLC and GC). (C) 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.

关键词： 凝聚胺技术   常规盐水检验技术   临床输血   凝聚细胞  

摘要： 目的:探讨凝聚胺技术与其他输血技术在临床输血中的应用效果.方法:将300例于2020年9月-2021年9月期间在我院接受输血治疗的患者纳入研究.所有患者在输血前均接受凝聚胺技术及常规盐水检验法检验,并将结果进行分析对比.结果:在凝聚细胞检出率及抗体检测正确率的对比上,凝聚胺技术分别为(21.22±10.34)％、(85.24±6.31)％,均较常规盐水检验下的(7.59±10.17)％、(70.21±5.49)％更高;凝聚胺技术的凝聚消失时间为(5.16±1.74)min,较常规盐水检验的(10.15±2

关键词： 前庭性偏头痛   眩晕   偏头痛   综述  

摘要： 前庭性偏头痛(vestibular migraine,VM)以反复发作的眩晕为主要临床表现,是引起眩晕的第二大疾病,发病率仅次于良性阵发性位置性眩晕,但诊断率低。VM可引起严重的身心损害,显著影响患者的生活质量,故了解该病十分重要。本文主要对VM的临床表现、治疗及其与其他疾病的关系进行综述。