简介：摘要：针对复杂环境下运煤列车编号识别不准确的问题，本文提出了一种基于深度学习的YOLOv5的定位与设计了无分割的端到端的字符识别方法，通过对数据集的实验，表明本文的定位算法和识别算法均高于其他算法，提高了运煤车厢编号识别的准确性，具有一定的应用价值。

简介：摘 要：随着变电站自动化规范建设的不断深入，变电站内投运的硬件设备越来越多。各类设备安装支架不统一，给通用型设备编号牌上下架带来了极大的不便，本文创新性的提出了研制通用型设备编号牌支架取代设备专用支架的解决方案。通用型设备编号牌通用支架的研制和应用，解决了基础运维工作中支架安装不便和支架备件不足的问题，缩短了运维时间，提高了运维效率，降低了安装运维费用，取得了良好成效。

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简介：AbstractForecasting the COVID-19 confirmed cases, deaths, and recoveries demands time to know the severity of the novel coronavirus. This research aims to predict all types of COVID-19 cases (verified people, deaths, and recoveries) from the deadliest 3rd wave data of the COVID-19 pandemic in Bangladesh. We used the official website of the Directorate General of Health Services as our data source. To identify and predict the upcoming trends of the COVID-19 situation of Bangladesh, we fit the Auto-Regressive Integrated Moving Average (ARIMA) model on the data from Mar. 01, 2021 to Jul. 31, 2021. The finding of the ARIMA model (forecast model) reveals that infected, deaths, and recoveries number will have experienced exponential growth in Bangladesh to October 2021. Our model reports that confirmed cases and deaths will escalate by four times, and the recoveries will improve by five times at a later point in October 2021 if the trend of the three scenarios of COVID-19 from March to July lasts. The prediction of the COVID-19 scenario for the next three months is very frightening in Bangladesh, so the strategic planner and field-level personnel need to search for suitable policies and strategies and adopt these for controlling the mass transmission of the virus.

简介：【摘要】 目的 研究麻醉精神类药品在管理过程中实施处方登记和处方编号管理的价值。方法 选择2019年1月-2021年12月在我院应用麻醉精神类药品进行治疗的患者140例，根据用药治疗期间药品管理模式的不同将其分成对照组和观察组。对照组中70例患者采用常规模式对麻醉精神类药品实施管理；观察组中70例患者采用处方登记和处方编号模式对麻醉精神类药品实施管理。对比两组研究对象对药品管理模式的满意度、不合格处方数、不良反应、纠纷事件情况、麻醉精神类药品应用时间和疾病治疗总时间。结果 观察组研究对象对药品管理模式的满意度高于对照组，组间数据比较差异有统计学意义（P＜0.05）；不合格处方数、不良反应、纠纷事件例数少于对照组，组间数据比较差异有统计学意义（P＜0.05）；麻醉精神类药品应用时间和疾病治疗总时间短于对照组，组间数据比较差异有统计学意义（P＜0.05）。结论 麻醉精神类药品在管理过程中应用处方登记和处方编号模式，可以明显减少不合格处方数和不良反应，使纠纷事件发生率降低，缩短病情治疗时间，使患者满意度得到显著提升。

简介：【摘要】 目的 研究麻醉精神类药品在管理过程中实施处方登记和处方编号管理的价值。方法 选择2019年1月-2021年12月在我院应用麻醉精神类药品进行治疗的患者140例，根据用药治疗期间药品管理模式的不同将其分成对照组和观察组。对照组中70例患者采用常规模式对麻醉精神类药品实施管理；观察组中70例患者采用处方登记和处方编号模式对麻醉精神类药品实施管理。对比两组研究对象对药品管理模式的满意度、不合格处方数、不良反应、纠纷事件情况、麻醉精神类药品应用时间和疾病治疗总时间。结果 观察组研究对象对药品管理模式的满意度高于对照组，组间数据比较差异有统计学意义（P＜0.05）；不合格处方数、不良反应、纠纷事件例数少于对照组，组间数据比较差异有统计学意义（P＜0.05）；麻醉精神类药品应用时间和疾病治疗总时间短于对照组，组间数据比较差异有统计学意义（P＜0.05）。结论 麻醉精神类药品在管理过程中应用处方登记和处方编号模式，可以明显减少不合格处方数和不良反应，使纠纷事件发生率降低，缩短病情治疗时间，使患者满意度得到显著提升。

简介：  【摘要】宋代诗人杨万里写过这样的诗句:“春花秋日冰雪，不听陈言只听天（自然之意）。”意思是大自然的景物，不能为景而写景，更不可“情不够，景来凑”，应该学会让景物说话，这样它才能为我们的文章“锦上添花”。《语文课程标准》指出，多角度地观察生活，发现生活的丰富多彩，捕捉事物的特征，力求有创意地表达。”因此，要指导学生通过大量的阅读，多角度的观察，并联系自己的生活和情感体验，发现自然、人文景物的丰富多彩，捕捉景物的特征，得到有益的启示，力求有创意的表达。要做到这一步，就得让学生在景物描写中用独到的表现手法，创造出真实面美丽的景象。初中学生已经掌了基本的叙事能力，因而，指导他们在作文中运用景物描写，有着非常重要的意义。

简介：AbstractThe impact of coronavirus disease 2019 (COVID-19) on endometriosis (EM) is currently unclear. Here, we aimed to describe the potential influence of COVID-19 on the pathogenesis, clinical symptoms, and treatment of EM. The cytokine storm caused by COVID-19 may induce the occurrence and progression of EM, and immunosuppression of COVID-19 may help the ectopic endometrium escape from immune clearance. Consequently, the forced social isolation and the cancelation of non-emergency medical treatment during the COVID-19 pandemic aggravate anxiety and psychological pressure, which can aggravate the symptoms related to EM and delay routine medical services.

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简介：AbstractBackground:To date, there is no effective medicine to treat coronavirus disease 2019 (COVID-19), and the antiviral efficacy of arbidol in the treatment for COVID-19 remained equivocal and controversial. The purpose of this study was to evaluate the efficacy and safety of arbidol tablets in the treatment of COVID-19.Methods:This was a prospective, open-label, controlled and multicenter investigator-initiated trial involving adult patients with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Patients were stratified 1:2 to either standard-of-care (SOC) or SOC plus arbidol tablets (oral administration of 200 mg per time, three times a day for 14 days). The primary endpoint was negative conversion of SARS-CoV-2 within the first week. The rates and 95% confidential intervals were calculated for each variable.Results:A total of 99 patients with laboratory-confirmed SARS-CoV-2 infection were enrolled; 66 were assigned to the SOC plus arbidol tablets group, and 33 to the SOC group. The negative conversion rate of SARS-CoV-2 within the first week in patients receiving arbidol tablets was significantly higher than that of the SOC group (70.3% [45/64] vs. 42.4% [14/33]; difference of conversion rate 27.9%; 95% confidence interval [CI], 7.7%-48.1%; P = 0.008). Compared to those in the SOC group, patients receiving arbidol tablets had a shorter duration of clinical recovery (median 7.0 days vs. 12.0 days; hazard ratio [HR]: 1.877, 95% CI: 1.151-3.060, P = 0.006), symptom of fever (median 3.0 days vs. 12.0 days; HR: 18.990, 95% CI: 5.350-67.410, P < 0.001), as well as hospitalization (median 12.5 days vs. 20.0 days; P < 0.001). Moreover, the addition of arbidol tablets to SOC led to more rapid normalization of declined blood lymphocytes (median 10.0 days vs. 14.5 days; P > 0.05). The most common adverse event in the arbidol tablets group was the elevation of transaminase (5/200, 2.5%), and no one withdrew from the study due to adverse events or disease progression.Conclusions:SOC plus arbidol tablets significantly increase the negative conversion rate of SARS-CoV-2 within the first week and accelerate the recovery of COVID-19 patients. During the treatment with arbidol tablets, we find no significant serious adverse events.Trial registration:Chinese Clinical Trial Registry, NCT04260594, www.clinicaltrials.gov/ct2/show/NCT04260594?term= NCT04260594&draw=2&rank=1

简介：摘要由严重急性呼吸综合征冠状病毒2（SARS-CoV-2）引起的2019年冠状病毒疾病（COVID-19）已经在全球多个国家引起大流行，该病毒传染性强、致死率高，部分变异株在病毒传播性、致病性和免疫原性等多方面发生变化。无症状感染和有症状感染的COVID-19患者在免疫特征上存在异质性；不同年龄阶段的COVID-19患者的临床表现也不尽相同。目前无治疗COVID-19的特效药物，疫情控制需依赖新型冠状病毒疫苗的接种，如核酸疫苗、灭活疫苗、病毒载体疫苗、蛋白质疫苗等。本文通过对新型冠状病毒的变异、临床表现、治疗和疫苗等方面文献的复习，展现目前相关研究的进展。

简介：摘要：煤炭是中国的主要化石能源，也是许多重要化工品的主要原料，随着国家经济的发展，化工品的需求也出现较高的增长速度。煤化工在中国能源、化工领域中已占有重要地位。我国根据自身能源结构特点，实行以煤为主的能源政策。但是在利用煤炭的同时，将会产生大量的C02。本文就C02的产生与减排进行了相关探讨。

简介：摘要：众所周知，课文的重难点是一节课的精髓所在，是学生必须掌握的基础知识与基本技能，也是学科教学的核心知识。突破难点，抓住重点，一节课就成功了一大半。那么，如何利用各种有效因素，抓住这画龙点睛部分呢？现将自己的几点看法介绍以下。

简介：摘要：当前，全面从严治党正向纵深推进，“抓好党建是最大政绩”的理念逐渐成为各级党员领导干部的共识。但从共识到落实，不会自动生成，需要通过考核来推动。党建工作“虚”、党建指标“软”、考核结果“空”的观念和现象在基层仍然不同程度存在。这就需要我们做足“＋”文章，坚持“考事＋考人”“结果＋过程”“正向＋反向”“共性＋个性”相结合，切实把党建考核压到实处。

简介：摘要：高效的小学数学课堂需要各个环节的有机配合，当前部分老师重视课堂导入、情境创设，但忽视课堂的结尾，常出现精心开场、草率结束的现象，课堂“尾”环节，内藏大文章，好的结尾画龙点睛，为教学增光添彩。我在平时的课堂教学活动中，尝试利用多种方式设计构建精彩课堂结尾。

简介：AbstractA large-scale vaccination of coronavirus disease-19 (COVID-19) in adults has been conducted for nearly a year, and there is a growing recognition that immunization for children is also essential. It has been months since emergency use of pediatric COVID-19 vaccine was approved, we reviewed the prevalence and transmission of COVID-19 in children. The prevalence of COVID-19 in children is reduced due to vaccination even in a Delta prevalent period, so an increase in the vaccination rate is needed in children. Although the precise role of children in the transmission requires more research to uncover, they likely played a significant role, according to the available literature. We also described four candidate COVID-19 vaccines for children on their safety and immunogenicity and the impact of severe acute respiratory syndrome coronavirus 2 variants on childhood vaccination. Safety issues on pediatric vaccines post-approval, like adverse events following immunization and adverse events of special interest require studies on long-term and effective regulatory mechanisms.

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