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外墙保温性能是制约装配式钢结构建筑推广应用的关键问题之一，目前对于钢结构外围护体系热工性能的研究还不充分，尚无关于我国严寒地区钢结构框架-ALC外墙传热机理和热桥效应的相关研究。针对严寒地区气候特点和建筑节能要求，基于ABAQUS软件，开展了钢结构框架-ALC外墙的传热性能有限元分析，揭示了钢梁、钢管混凝土柱以及梁柱节点等对墙体热工性能的影响机理，分析了保温体系类型、保温层热阻、ALC墙板热阻、钢梁连接件类型、框架柱截面形式、有无楼板等对墙体平均传热系数、热桥效应和内表面温度的影响。结果表明：保温层热阻对墙体的传热性能影响显著，而ALC墙板厚度和导热系数、连接件类型、框架柱形式等因素的影响相对较小，墙体平均传热系数随保温层或ALC墙板热阻的增大近似线性减小。相较于内保温体系，采用外保温可提高墙体内部温度，降低冷凝风险。研究结果可为我国严寒地区装配式钢结构外围护体系的热工性能设计及构造措施提供参考。

深度学习在感知智能上的不断突破推动了人工智能在各领域的广泛应用。但在实际落地过程中，只有把感知智能提高到更高层的认知智能，才能更好地满足日益复杂的应用需求。神经符号学将擅长感知任务的神经网络方法和擅长推理任务的逻辑符号学有机地融合在一起，是实现高层认知智能的途径之一。基于此，提出了一套神经符号学的实用框架NSFOL，并基于NSFOL实现了机器人任务规划、自学习机器人运动规划和教育实验视频评估3个典型应用。实验结果表明，尽管NSFOL尚未完善，但是它已经能够很好地支持相关应用，在可学习、可推理、可解释和可泛化方面具备一定的优势。希望通过阐述神经符号学的阶段性研究成果，激发更多的思考和研究，共同推动神经符号学的发展。

受火边界作为研究结构构件抗火性能的基本前提条件之一,对结构构件抗火性能有着显著影响。已有钢管混凝土柱相关研究多假设其四面均匀受火,则针对实际结构中可能出现的三面受火这一情况,对矩形钢管混凝土柱进行抗火性能理论研究。分析了三面受火的矩形钢管混凝土柱温度场和耐火极限,以及高温全过程的构件受力机理,且与四面受火的矩形钢管混凝土柱进行了对比分析。研究表明:三面受火时构件截面的整体温度比四面受火时有显著降低,且三面受火时耐火极限高于四面受火;三面受火构件在高温全过程中轴向变形趋势与四面受火类似,而侧向变形可能会发生反转。

采用非平衡Mach Zender干涉仪检测光纤光栅高频振动传感测量,通过工作点控制消除了随机相位变化和光源起伏的影响,实现了40kHz频率范围内振动信号的检测.

【目的】通过检测抵抗素在甲状腺相关眼病患者及对照组眼眶脂肪组织和脂肪细胞中的表达，为进一步探讨抵抗素与甲状腺相关眼病的相关性打下基础。【方法】通过体外原代培养获得前脂肪细胞，前脂肪细胞在分化液的作用下转化为成熟脂肪细胞。用RT-PCR法检测眶脂肪组织、前脂肪细胞及成熟脂肪细胞中抵抗素mRNA的表达，并进行免疫组化检测抵抗素蛋白的表达。【结果】前脂肪细胞中无抵抗素mRNA及蛋白的表达。成熟脂肪细胞及眶脂肪组织中有抵抗素mRNA及蛋白的表达。免疫组化结果显示抵抗素蛋白位于成熟脂肪细胞胞浆中。【结论】甲状腺相关眼病患者眶脂肪中抵抗素mRNA及蛋白表达丰富，说明甲状腺相关眼病患者眶脂肪增多是因成熟脂肪细胞所占比例增加、脂肪细胞分化增强所致．

【目的】观察结膜下注射卡铂治疗视网膜母细胞瘤( RB) 的疗效和环孢素(CsA)对卡铂治疗 RB 的增效作用。【方法】40 只 RB 成瘤裸鼠分 8 组(G1～G8), 对照组(G1)结膜下注射生理盐水, 全身用药组(G2)腹腔内注射卡铂 350 μg+环孢素 1.0 mg, G3～G5 组及 G6～G8 组分别结膜下注射卡铂 100、200、350 μg 及卡铂 100、 200、350 μg+CsA 1.0 mg, 每周 2 次共 3 周。每天裂隙灯观察前房肿瘤情况并照相, 第 6 周取眼球及结膜、巩膜作病理及图像处理, 计算肿瘤面积及肿瘤抑瘤率。【结果】G2、G3、G6 组肿瘤生长较 G1 组减缓, 肿瘤未能控制。G4 组肿瘤生长延缓, 肿瘤控制率为 40%。G5 及 G7 组肿瘤无继续增大, 部分肿瘤体积减少, 肿瘤控制率和治愈率为 60%和 20%, G8 组肿瘤全部控制, 肿瘤控制率和治愈率为 20%和 80%, 肿瘤基本消失。结膜下注射部位结膜和巩膜检查未见异常。图像处理及统计学分析显示, G3、G4、G6 肿瘤面积和抑瘤率与 G2 之间无显著性差异( P >0.05) , G5、G7、G8 组肿瘤面积和抑瘤率与 G2 之间有显著性差异( P< 0.05) 。【结论】 结膜下注射卡铂能在较低剂量下抑制 RB 生长, 加用 CsA 能提高卡铂治疗 RB 疗效。结膜下联合注射卡铂和 CsA 是一种安全有效的 RB 化疗方法。

目的】分析多孔羟基磷灰石(HA)义眼台眶内植入后的并发症并探讨其原因。【方法】回顾眶内植入羟基磷灰石 义眼台320 例, 随诊6 月～ 4 年。【结果】320 例中发生并发症的有46 例(14.4 %), 其中义眼台暴露41 例(12.8%), 义眼台位置 异常2 例, 其它并发症包括义眼台慢性感染、结膜肉芽肿等。义眼台暴露的发生时间为术后7 d～ 6 月, 范围为2 ～ 15 mm 。【结 论】羟基磷灰石义眼台眶内植入最常见的并发症是义眼台暴露, 并发症的发生原因与多种因素有关, 包括术前眼病史、包裹义 眼台的异体巩膜的排斥溶解、义眼台的选择、缝合技术、术后眼眶的放射治疗等。

目的: 探讨彩色多普勒成像( color Doppler imaging, CDI)技术对脉络膜肿瘤的诊断价值。方法: 用高分辨率 CDI 对 49 例脉络膜肿瘤内血流特征作定性、定量分析。结果: 25 例脉络膜黑色素瘤中 24 例( 96%)和 5 例脉络膜转移癌中 3 例 ( 60%)显示肿瘤内含枝状分布的血流,频谱呈较高阻力的波形, 8 例脉络膜血管瘤显示肿瘤内呈“血管池”样充满或弥散星点 分布的丰富血流,频谱含呈较低阻力动脉血流和静脉血流波形; 脉络膜黑色素瘤和脉络膜血管瘤在肿瘤血管舒张期血流速度 和阻力指数上差异有显著性(P 0. 05)。而 7 例脉络膜积血、 4 例局限性视网膜下出血未见病变内血流。结论: 用 CDI 分析脉络膜肿瘤血流特征有助于其鉴别诊断。

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Copyright of Modern Preventive Medicine is the property of Modern Preventive Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Spare parts management is the key to improving the reliability of production lines and achieving cost reduction and production efficiency. A spare parts demand forecasting model based on the improved Croston method was proposed for spare parts demand with intermittent and random characteristics. Based on the Syntetos criterion, the spare parts demand was classified into four categories by intermittent and fluctuating characteristics. For demands with fluctuating characteristics, spare parts demand prediction was decomposed into two types of problems: demand occurrence state prediction and demand quantity prediction, and an ensemble empirical mode decomposition (EEMD)-long short-term memory (LSTM) prediction model was designed for it. The EEMD method was applied to decompose the fluctuating sequence into several relatively smooth components, and then the LSTM method was used to forecast each component. For demands with intermittent characteristics, a signal modulation technique was introduced to serialize the binary sequence of occurrence states. The proposed method solves the problems of strong fluctuation and intermittency of spare parts demand. It has been applied to China Tobacco Hubei Industrial Co., Ltd., which proved the superiority and feasibility of the method. [ABSTRACT FROM AUTHOR]

In order to narrow the gender gap in the science, technology, engineering, and math (STEM) field, many countries have formulated relevant policy measures. This study summaries policy documents, plans and projects of women's STEM education in different countries, and conducts text content analysis from three aspects, i. e., policy makers, policy elements, and policy implementation and evaluation. Results show that there are three types of policy makers, and each has their own focus. In terms of policy elements, it emphasizes that STEM education for female students in the education stage, as well as the attention to content such as social norms and stereotypes, career development, policy formulation process, and innovation and entrepreneurship has increased. In terms of policy implementation and evaluation, it emphasizes that the implementation of responsible entities and cross departmental cooperation, and focuses on collecting gender data and improving policies with an evidence-based approach. At the same time, this study summarizes the types of implementation cases, and elaborates the foreign projects and measures to improve female STEM education and promote women's participation in STEM fields into five categories, namely, tools and methods, resource orientation, training and communication, platform promotion, and social awareness. To better promote the development of STEM education for women in China, this study summarizes the inspiration and proposes policy suggestions from four aspects, i. e., policy planning, scientific evidence based, project development, and female empowerment. [ABSTRACT FROM AUTHOR]

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Objective: To investigate the relationship between serum asymmetric dimethylarginine (ADMA）, inhibin A (INH-A）and fetal growth restriction (FGR) in patients with early onset severe preeclampsia (SPE）. Methods: 110 patients with early onset SPE who were delivered in The First Affiliated Hospital of Hainan Medical University from January 2021 to January 2023 were selected as observation group, and 100 healthy pregnant women were selected as control group, patients with early onset SPE were divided into FGR group (46 cases) and no FGR group (64 cases) according to whether FGR was combined. The levels of serum ADMA and INH-A in observation group and control group were compared. The influencing factors of FGR in patients with early onset SPE were analyzed by multivariate Logistic regression analysis, the predictive effect of serum ADMA and INH-A levels on FGR in patients with early onset SPE were analyzed by receiver operating characteristic curve (ROC）. Results: Compared with control group, the levels of serum ADMA and INH-A in observation group were increased (P＜0.05）. Compared with no FGR group, the levels of ADMA, INH-A, systolic blood pressure, diastolic blood pressure, serum creatinine, 24 h urinary protein quantification, and umbilical artery blood flow end-systolic velocity/end-diastolic velocity ratio (S/D) were increased in FGR group, while the pre-pregnancy body mass index (BMI) was decreased (P＜0.05）. Multivariate Logistic regression analysis showed that, 24 h urinary protein quantification, arterial blood flow S/D, ADMA and INH-A were independent risk factors for FGR in patients with early onset SPE (P＜0.05）. ROC analysis showed that, the area under the curve of combined prediction of serum ADMA and INH-A levels in patients with early onset SPE complicated with FGR was greater than that of single prediction. Conclusion: The levels of serum ADMA and INH-A in patients with early onset SPE are abnormally increase, and are involve in the occurrence and development of FGR, in addition, the combination of serum ADMA and INH-A levels has a high predictive efficiency for FGR in patients with early onset SPE. [ABSTRACT FROM AUTHOR]

Objective To investigate the relationship between muscle strength and the risk of depression in the middle-aged and elderly, and to provide reference for the prevention and treatment of depression in the middle-aged and elderly in China. Methods Based on the data of China Health and Retirement Longitudinal Study (CHARLS), the middle-aged and elderly people who participated in the survey in 2015 and 2018 were selected. Firstly, restricted cubic splines (RCS) were used to analyze whether there was a dose-response relationship between upper limb strength (standardized grip strength) and lower limb strength (time to stand up from a chair) and the risk of depression in the middle-aged and elderly. Secondly, the upper and lower limb strength were divided into three groups, and Logistic regression model was used to evaluate the correlation between upper and lower limb strength, overall muscle strength and depression risk in the middle-aged and elderly. Results A total of 6 245 subjects were enrolled in this study. During the 3-year follow-up periods a total of 2 095 (33.5%) subjects had depressive symptoms. There was a dose-response relationship between upper and lower limb strength and the risk of depression in the middle -aged and elderly. Logistic regression model showed that after adjusting the confounding factors such as sex, age and marital status, stronger upper and lower limb strength could reduce the risk of depression by 24% and 28%, respectively. Compared with the weakest overall muscle strength group, the strongest muscle strength group had a 48% lower risk of depression (OR=0.52, 95%CJ: 0.41-0.67). Conclusion Strong muscle strength can reduce the risk of depression in the middle-aged and elderly. [ABSTRACT FROM AUTHOR]

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Adjusting and optimizing the strategic paradigm of China's agricultural regions in the new era is of great significance to the implementation of the "Greater Food" concept and the building of a strong agriculture. This study takes the layout adjustment of China's agricultural regions during the Fifteenth Five-Year Plan period as its theme, and firstly summarizes the problems that exist in the main agricultural production regions and the layout changes in grain production bases. Then, in conjunction with the new requirements of the national strategies, the functional types of agricultural regions are refined, the different function positions are clarified, the adjusting idea of the agricultural region's layout is established, and an optimized scheme is put forward for overall layout of agricultural regions, including eight main agricultural production regions, three sub-production regions, and six agricultural advantage production regions (i.e., "8+3+6"). Finally, this study provides specific suggestions for improving the functions of China's agricultural regions and proper important construction projects. [ABSTRACT FROM AUTHOR]

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