简介：

简介：

简介：无

简介：[摘要] 通过分析需要系数与同时系数的概念，详细介绍其在负荷计算中的取值要求，并以实例阐述给排水工程中通过需要系数与同时系数负荷计算时与传统负荷计算结果的差别及实际意义。

简介：摘要：在开展小学语文教学过程中，作为教师要充分运用激励性语言，激发学生的学习积极性，引导学生真正融入到语文学习体系当中，提升学生的语文学习与感知效果，适应当前教育改革发展趋势。

简介：

简介：AbstractBackground:The End Tuberculosis (TB) Strategy of the World Health Organization highlights the need for patient-centered care and social protection measures that alleviate the financial hardships faced by many TB patients. In China, TB treatments are paid for by earmarked government funds, social health insurance, medical assistance for the poor, and out-of-pocket payments from patients. As part of Phase III of the China-Gates TB project, this paper introduces multi-source financing of TB treatment in the three provinces of China and analyzes the challenges of moving towards universal coverage and its implications of multi-sectoral engagement for TB care.Main text:The new financing policies for TB treatment in the three provinces include increased reimbursement for TB outpatient care, linkage of TB treatment with local poverty alleviation programs, and use of local government funds to cover some costs to reduce out-of-pocket expenses. However, there are several challenges in reducing the financial burdens faced by TB patients. First, medical costs must be contained by reducing the profit-maximizing behaviors of hospitals. Second, treatment for TB and multi-drug resistant TB (MDR-TB) is only available at county hospitals and city or provincial hospitals, respectively, and these hospitals have low reimbursement rates and high co-payments. Third, many patients with TB and MDR-TB are at the edge of poverty, and therefore ineligible for medical assistance, which targets extremely poor individuals. In addition, the local governments of less developed provinces often face fiscal difficulties, making it challenging to use of local government funds to provide financial support for TB patients. We suggest that stakeholders at multiple sectors should engage in transparent and responsive communications, coordinate policy developments, and integrate resources to improve the integration of social protection schemes.Conclusions:The Chinese government is examining the establishment of multi-source financing for TB treatment by mobilization of funds from the government and social protection schemes. These efforts require strengthening the cooperation of multiple sectors and improving the accountability of different government agencies. All key stakeholders must take concrete actions in the near future to assure significant progress toward the goal of alleviating the financial burden faced by TB and MDR-TB patients.

简介：摘 要： 锅炉引风机在运行过程中节能、工艺操作都需要调速，调速技术飞速发展，磁力耦合以投资较少、稳定可靠、谐波较少、改造简单、抗晃电能力强优点脱颖而出，将磁力耦合应用在锅炉引风机上具有可行性。

简介：摘要：城镇化水平的不断提高产生了大量空心村。为了研究空心村腾退宅基地的流转配置模式，本文分析了重庆“地票”交易模式和天津“以宅基地换房”模式，归纳总结了他们的创新经验和先进做法，以期为类似宅基地流转退出提供一定的借鉴和参考。

简介：AbstractBackground:The global prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing. The pathogenesis of NAFLD is multifaceted, and the underlying mechanisms are elusive. We conducted data mining analysis to gain a better insight into the disease and to identify the hub genes associated with the progression of NAFLD.Methods:The dataset GSE49541, containing the profile of 40 samples representing mild stages of NAFLD and 32 samples representing advanced stages of NAFLD, was acquired from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were identified using the R programming language. The Database for Annotation, Visualization and Integrated Discovery (DAVID) online tool and Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database were used to perform the enrichment analysis and construct protein-protein interaction (PPI) networks, respectively. Subsequently, transcription factor networks and key modules were identified. The hub genes were validated in a mice model of high fat diet (HFD)-induced NAFLD and in cultured HepG2 cells by real-time quantitative PCR.Results:Based on the GSE49541 dataset, 57 DEGs were selected and enriched in chemokine activity and cellular component, including the extracellular region. Twelve transcription factors associated with DEGs were indicated from PPI analysis. Upregulated expression of five hub genes (SOX9, CCL20, CXCL1, CD24, and CHST4), which were identified from the dataset, was also observed in the livers of HFD-induced NAFLD mice and in HepG2 cells exposed to palmitic acid or advanced glycation end products.Conclusion:The hub genes SOX9, CCL20, CXCL1, CD24, and CHST4 are involved in the aggravation of NAFLD. Our results offer new insights into the underlying mechanism of NAFLD progression.

简介：摘要：地下室周边回填土的压实系数对上部结构的抗震很重要，同时对地下室的抗渗也至关重要。

简介：摘要：气溶胶设备维护的好坏对确保气溶胶质量浓度数据观测和传输是否正常起着决定性作用，本文结合平罗局气溶胶仪器性能及工作实际，依据大气成分观测业务规范及大气成分质量控制信息采集软件操作手册，归纳出气溶胶散射系数设备使用维护需注意的问题，确保气溶胶散射系数设备正常运转。

简介：摘要：近些年，国家十分重视节能环保事业的发展，在此背景下，带Low-E镀膜的双玻、三玻中空玻璃被大量用于绿色建筑、被动房、既有建筑的节能改造等门窗及幕墙产品中，由于其加工工艺复杂，生产成本较普通玻璃高出很多，导致建筑市场中鱼目混珠、以次充好的案例频频出现，难以保证建筑质量和建材行业的健康发展。目前我国的国家标准、行业标准、地方标准中都没有涉及中空玻璃传热系数现场检测的方法及设备，更无适用于工程现场中空玻璃传热性能的测试评定方法。如何快速、准确、直观的鉴别Low-E中空玻璃，并能够相对准确检测中空玻璃的传热系数就成为业内面临的实际问题。

简介：【摘要】：剪式稳定架系统常用于汽车车身输送线，可实现车身的升降与运输。其上框架布置2台电机，通过皮带带动下框架和吊具，实现升降。在实际运行过程中，由于存在升降皮带安装轮安装相位偏差、皮带缠绕驱动轮运行过程旋转半径波动、皮带不等长等因素，造成下框架倾斜。在升降过程中，由于运动不平衡，4根剪式稳定架可能产生较大的作用力，存在安全隐患。因为采用多刚体系统计算会产生卡死现象，所以对剪式稳定架进行柔性化处理，从而得到刚柔耦合的多体系统，然后进行动力学仿真分析，预测剪式稳定架的受力情况，为产品设计和优化提供参考。

简介：摘要:磁耦合谐振式无线电能传输是一种利用线圈间高频耦合谐振磁场实现能量无线传输的新兴技术。目前该技术在传输距离、效率和功率等方面还不能够满足实用化所提出的要求，仍存在一些问题有待于研究。其理论研究主要采用耦合模理论和集中参数电路模型的分析方法，对耦合体的动态过程、系统内部能量分布规律的研究还不够深入。另外由于工作频率高于电力电子器件的一般使用频率，磁耦合线圈的耦合系数较小并且处于谐振状态，存在着功率器件难以满足要求、系统损耗较大、效率较低等问题。本文从机理与模型、谐振线圈组、磁场驱动源、系统设计等方面展开研究，为磁耦合无线电能传输系统的分析与设计奠定了理论基础。

简介：摘要：电感耦合等离子体质谱(ICP-MS)是以电感耦合等离子体为离子源，以质谱分析器进行检测的无机多元素和同位素分析技术。该技术以其灵敏度高、干扰少、检出限低、可测定元素多、线性范围宽、可进行同位素分析、应用范围广等优点被公认为是当前最先进的痕量无机元素分析技术之一。本文重点探讨了电感耦合等离子体质谱技术。

简介：摘 要：为研究冻土水热耦合理论、机理以及冻结过程温度场、水分场的变化过程，根据各国学者对冻土多物理场的研究成果，对冻土水热耦合发展过程进行简述。这一总结有利于寒区或季节性冻土区土体冻结过程的理解，为寒区工程提供理论参考。

简介：摘要：本文对混合动力汽车行星齿轮机构的性能参数及特点进行分析，并分别对电机驱动车辆起步、发动机介入、电磁锁死控制单元工作等过程进行了分析,运用仿真软件对行星齿轮耦合器最大载荷情况进行了强度、刚度分析、模态分析验证其是否满足各方面设计要求。

简介：摘要目的探讨舌黏膜耦合颊黏膜与舌黏膜耦合异种脱细胞基质生物膜(ADM)一期尿道成形术治疗男性尿道下裂多次修复失败患者的临床疗效。方法回顾性分析2017年2月至2019年2月收治的26例成年男性尿道下裂修复失败患者的病例资料，其中上海交通大学附属第六人民医院18例，山西医科大学第二医院3例，郑州大学第一附属医院3例，哈尔滨医科大学附属第二医院2例。根据尿道替代材料不同将患者分为两组，A组为舌黏膜耦合颊黏膜组(14例)，平均年龄(29.5±1.2)(18～41)岁；既往手术次数平均(3.6±0.7)(2～5)次；既往取口腔黏膜次数平均(1.0±0.5)(0～2)次；尿道缺损长度(6.4±0.6)cm。B组为舌黏膜耦合ADM组(12例)，平均年龄(26.5±0.8)(20～38)岁；既往手术次数平均(4.6±0.8)(3～5)次；既往取口腔黏膜次数平均(1.0±0.5)(0～2)次；尿道缺损长度(6.7±0.4)cm。两组上述指标比较差异均无统计学意义(P>0.05)。手术方式：将阴茎伸直，切除纤维组织或瘢痕，测量尿道缺损长度。A组采用舌黏膜铺尿道板，加盖颊黏膜；B组采用舌黏膜铺尿道板，加盖ADM[异种(牛)脱细胞基质敷料，规格5 cm×5 cm]。A组取舌黏膜的长度平均(5.0±0.2)(4.0～6.0)cm，宽度平均(1.2±0.2)(1.0～1.5)cm；取颊黏膜的长度平均(4.1±0.2)(3.5～5.5)cm，宽度平均(1.2±0.2)(1.0～1.5)cm。B组取舌黏膜的长度平均(5.0±0.2)(5.0～6.0)cm，宽度平均(1.2±0.2)(1.0～1.5)cm。两组术中取口腔黏膜长度差异有统计学意义(P<0.05)。尿道下裂修复成功标准：①阴茎外观接近正常；②矫正阴茎下曲；③尿道正位开口；④尿流尿线正常，排尿通畅，成人最大尿流率>15 ml/s。比较两组的疗效和并发症发生率。结果术后平均随访(16.3±1.6)(8～24)个月。A、B组口腔区域并发症发生比例分别为：口腔供区疼痛7/14例和1/12例，张口紧绷感8/14例和1/12例，口腔供区麻木感8/14例和1/12例，差异有统计学意义(P<0.05)。A、B组尿道并发症发生比例分别为：尿道瘘1/14例和4/12例，尿道狭窄2/14例和6/12例，差异有统计学意义(P<0.05)；阴茎弯曲2/14例和1/12例，差异无统计学意义(P>0.05)。A、B组手术成功比例分别为12/14例和5/12例，差异有统计学意义(P<0.05)。结论对于尿道下裂多次修复失败后皮源缺少的患者，建议采用舌黏膜耦合颊黏膜一期尿道成形术修复尿道。舌黏膜耦合ADM尽管具有口腔黏膜取材少、术后口腔并发症低等优点，为多次手术失败阴茎局部皮源缺损患者提供了一种新途径，但存在术后并发症多、手术成功率低等风险，应谨慎使用，不推荐一线使用。

简介：