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关键词： 高职高专院校扩招生   建筑相关占有   精准教学实施  

摘要： 高职高专扩招生是一类特殊学生群体,学员成分复杂,知识结构程度不同,在教学的过程中需要进行分类精准教学,这是提高课堂教学质量,提高学生知识应用能力的有效渠道。建筑类专业是一个实践性较强的专业,在进行分类精准教学实施的过程中存在一定问题,必须根据问题提出有效的接近措施,全面提高学生实践能力,为现代企业培养建筑相关的高级技术人才。本论文从不同方面阐述针对高职高专院校扩招生三校生在建筑相关专业分类精准教学实施过程中的问题研究,希望为研究高职高专扩招生分类精准教学实施的专家和学者提供理论参考依据。

关键词： 路桥   伸缩缝   施工技术   要点  

摘要： 在路桥施工工程建设中,需要利用先进测量仪器检测路桥使用情况,测量数据充分说明了路桥所承受的车辆荷载较大,加剧了桥梁结构受损程度,会缩短其使用寿命。而要想改变此种局面,提高桥梁使用性能,应在路桥建设中实施伸缩缝施工,增强路桥结构的稳固性。基于此, 阐述了道路桥梁伸缩缝的相关内容,提出了伸缩缝施工在路桥施工技术要点,期弥补以往路桥施工不足,提高路桥的安全性、稳固性及耐用性,适应当下交通运输需求。

关键词： 土地利用   整治   生态系统服务   生态功能分区   FCM聚类  

摘要： 生态系统服务功能分区是科学管理生态系统的重要手段。国土空间整治能够通过综合治理闲置、低效和生态退化国土资源,改变国土空间结构与布局,从而对生态系统功能产生影响。现有研究较少关注土地整治措施对未来生态系统服务空间集聚模式的潜在影响作用,整治措施的生态导向性有待提升。因此,该研究以山东招远市为例,设计了基准情景、废弃矿区修复情景以及城乡建设用地整治情景,定量化预测生态系统服务变化特征,并运用模糊C均值聚类算法开展生态系统功能区划定。结果表明,整治情景下土地利用数量结构变化显著,各生态系统服务能力均有所提升。全域可以划分为生态综合区、生境保育区、固碳释氧区、固碳产粮区、生态维护区5个生态功能区。与基准情景相比,废弃矿区修复情景下各生态功能区60%生态系统服务水平持平,28%处于劣势,仅12%显著提升。城乡建设用地整治则能够显著提升全域自然娱乐能力,总体增长了1.89%。生境保育区的自然娱乐和粮食生产能力平均值分别增加了0.01和0.10,固碳释氧区的生境质量、水源涵养能力分别增长了20.69%和100%。研究表明全面提升生态系统多功能性需要综合开展多元的国土空间整治措施。

关键词： 市政道路工程施工技术   伸缩缝技术工程质量  

摘要： 伸缩缝施工技术是市政道路工程中一种较为重要的工艺形式。本文主要通过介绍三种常应用的伸缩缝技术类型的优缺点,并结合了九江市八里湖新区的市政道路施工实例,将伸缩缝施工技术的具体施工应用流程进行整体分析,同时就如何提高伸缩缝施工技术的质量控制方面给予几点建议。

摘要： Purpose/Objective(s) The role of radiotherapy, in addition to chemotherapy, has not been thoroughly determined in metastatic non-small cell lung cancer (mNSCLC). The purpose of the study was to investigate clinical characterization and treatment-related parameter of long-term survival in mNSCLC patients treated with concurrent chemotherapy with thoracic radiation therapy. In our previous study, the count of CD4-positive and CD8-positive T cells was associated with overall survival (OS). We speculated that baseline lung immune prognostic index (LIPI) based on pretreatment neutrophils/(leukocytes minus neutrophils) ratio (dNLR) and lactate dehydrogenase (LDH) level may be associated with OS. Thus, the prognostic value of LIPI level was also evaluated in this study. Materials/Methods We retrospectively analyzed 243 eligible patients with mNSCLC who were treated with chemotherapy and concurrent radiation to the primary tumor in two prospective studies. These patients had received at least two chemotherapy cycles and a thoracic radiation dose of at least 40 Gy in 2-Gy fractions, and did not receive targeted therapy or immunotherapy during lifetime. According to previous publications, dNLR greater than 3 and LDH greater than upper limit of normal was developed, characterizing 3 groups (good, 0 factors; intermediate, 1 factor; poor, 2 factors). Prognostic factors for OS were identified by using univariate and multivariate analysis. Propensity-score matching (PSM) were performed to further adjust for confounding. OS≥ 18 months was defined as long-term survival (LTS). Results According to LIPI, 141 patients were classified into good group, 83 patients in intermediate, and 19 patients in poor group. The number of patients was small in poor group. Thus, intermediate group and poor group were merged into the same risk group (intermediate-poor group). A total of 78 patients with long-term survival, 57 (40.4%) patients in good group, and 21 (20.6%) patients in intermediate-poor g

摘要： Purpose/Objective(s) While prospective trials have established stereotactic body radiation therapy (SBRT) as standard of care for inoperable early-stage non-small cell lung cancer (NSCLC), these studies excluded patients with tumors larger than 5 cm. Since these patients have few treatment options and conservative management is associated with significant morbidity, many clinicians utilize SBRT if dosimetric constraints can be met. The purpose of this study is to determine the rate of primary tumor failure (PTF) after SBRT for NSCLC with primaries ≥ 5cm. Materials/Methods We performed a retrospective review of all patients with NSCLC and large primary tumors (≥ 5 cm in maximum dimension) treated at our institution using SBRT from 2010 – 2018. Patients with nodal or distant disease were included, but only evaluated for toxicity and PTF. Treatment failures were captured by review of imaging, pathology, and clinical notes. PTF was defined as disease recurrence in or at the margin of the primary tumor volume (PTV) and was measured from end of SBRT to PTF. Patients without PTF were censored at last follow up or death. The Kaplan-Meier method was used to estimate event-time probabilities for PTF. Predictors of PTF were analyzed using log rank tests between groups and a parsimonious multivariate Cox multivariate model. Results A total of 145 patients were identified. Median age was 78 years (Interquartile rage [IQR] 72 -84). Evidence of regional disease was present in 5 (3%) patients and metastatic disease in 14 (10%). Median tumor diameter was 5.75 cm (IQR 5.25 – 6.43) and tumor volume was 37.9 cm3 (IQR 25.4 – 53.6). The most common SBRT regimen was 48 Gy in 4 fractions (68 patients). Median BED10 was 105.6 (IQR 105.6-151.2). With a median follow up of 21 months (IQR 9 – 32), PTF at 1, 2, and 3 years was 10.6% (95% Confidence Interval [CI] 5.1 – 16.1), 17.0% (95% CI 9.9 – 24.1), and 22.0% (95% CI 13.4 – 30.6). On univariate analysis, factors associated with PTF included l

关键词： 建筑结构   裂缝   伸缩缝  

摘要： 建筑结构裂缝的产生大大威胁到了建筑的安全性和稳定性。基于此,文章探究了建筑结构中裂缝的主要类型,分析了建筑结构裂缝的危害性及其成因,提出了建筑结构裂缝的规避措施。

关键词： 土壤地理实验室   安全   功能分区  

摘要： 实验室安全是学校重要的管理工作之一,而合理的实验室设计与功能分区布局,能避免潜在的安全隐患,保证实验室安全管理工作的高效开展。以贵州师范大学土壤地理实验室为例,以安全性能作为评估标准,进行与之相匹配且细致的实验室功能分区布局,不仅提高了实验室的安全性,还保障了各项科研任务的顺利推进,同时也为其他实验室建设提供了参考。