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由于复杂建筑结构的施工难度大且不确定性高，开展结构施工监测对整体的安全稳定至关重要。基于BIM和Web技术研发了对巨型钢桁架结构进行施工监测的结构安全监测平台，并对监测平台的总体设计思路及各项功能进行了详细的说明。根据监测数据的概率分布特征，利用高斯混合模型确定监测预警值以开展结构安全预警。该安全监测平台跟踪了钢桁架卸载施工全过程的形态和内力变化情况，建立了钢桁架的精细化模型以模拟卸载施工的全过程，并对比分析了实测结果和计算结果。研究结果表明：钢桁架z向位移均未超过跨度的1/400，构件应力比的最大值未超过0.4，说明了卸载施工的安全性较高；施工阶段的实测应力和位移的相对误差不超过10%，反映了数值模型对于卸载施工模拟的可靠性和有效性；所研发的监测平台获得了卸载全过程的结构响应变化规律，可为结构状态评估提供可靠的数据支撑。

钢结构模块化建筑是一种新兴的建筑结构体系，由多个标准的模块化单元组成，具有施工速度快、质量可控等优点。然而，目前对于模块化钢结构的研究还不够深入，特别是有关其抗倒塌性能的研究较少。通过有限元分析软件ABAQUS研究了钢结构模块化建筑在单个角模块、2个边模块和4个内模块失效时的抗倒塌性能，包括最终变形模式、荷载-位移曲线和节点内力变化等。同时，研究了墙板厚度对结构抗倒塌承载力及倒塌过程中内力重分布的影响。结果表明：3种模块失效工况下，墙板系统对结构抗倒塌承载力的贡献率均在45%~70%之间；当墙板厚度超过某个临界值后，再增加其厚度对抗倒塌贡献率的影响很小。同时，墙板厚度的增加限制了模块间连接节点拉力的发挥，甚至会导致节点内出现压力。

在应对突发重大传染病时，社区防控是整个社会疫情防控的重要一环。在新型冠状病毒肺炎疫情社区防控实践经验的基础上，提出一个社区疫情排查调度问题的数学模型，根据相关疫情防控信息为社区重点住户估算风险指数，并在此基础上将重点住户分配给各个排查工作小组，为每个小组设定排查路线，从而尽可能高效地完成各项排查任务。为求解该问题，提出一种混合智能优化调度算法，它基于水波优化的启发式策略搜索解空间，并混合了两种局部搜索策略来提高解的精度，形成初步调度方案。在调度方案的实施过程中，如果排查到某个对象有特殊情况需要处置，算法将对方案进行动态调整，以适应变化后的排查任务。在浙江省多个社区排查的实际案例问题上的计算结果验证了方法的有效性。

研究了冷压初榨椰子油对四氯化碳（CCl4）诱导昆明小鼠急性肝损伤的保护作用。将72只昆明小鼠随机分成6组，包括正常组、四氯化碳肝损伤模型组、联苯双酯组（150 mg/kg）、椰子油低剂量组（5 mL/kg）、椰子油中剂量组（10 mL/kg）、椰子油高剂量组（20 mL/kg），通过测定小鼠血清中丙氨酸转氨酶（ALT）、天冬氨酸转氨酶（AST）、乳酸脱氢酶（LDH）、甘油三酯（TG）和总胆固醇（TC）指标，肝组织中超氧化物歧化酶（SOD）活力、谷胱甘肽过氧化物酶（GSH-Px）活力及丙二醛（MDA）含量，采用HE染色切片对小鼠肝脏组织进行病理学检查，考察冷压初榨椰子油对四氯化碳致小鼠急性肝损伤的保护作用。结果表明：与模型组相比，不同剂量组的冷压初榨椰子油（5、10 mL/kg和20 mL/kg）可以不同程度地降低小鼠血清中ALT、AST、LDH、TG、TC水平以及肝组织中MDA含量，提高肝组织中SOD活力与GSH-Px活力；同时，肝脏组织病理学观察与生化指标检测结果一致。其中，高剂量的冷压初榨椰子油(20 mL/kg)作用效果优于阳性对照联苯双酯。研究表明冷压初榨椰子油对肝脏具有较好的保护作用，作用机制可能与其含有较多的抗氧化物质以及功能性物质有关。The hepatoprotective effects of virgin cold-pressed coconut oil (VCPCO) against carbon tetrachloride (CCl4) induced acute liver injury in Kunming (KM) mice were studied. A total of 72 Kunming mice were randomly divided into 6 groups, including normal group, CCl4 liver injury model group, bifendate group (150 mg/kg), coconut oil low dosage group (5 mL/kg), coconut oil medium dosage group (10 mL/kg) and coconut oil high dosage group (20 mL/kg). The levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), triglyceride (TG), total cholesterol (TC) in serum, and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and malondialdehyde (MDA) in liver were determined. The liver tissue was examined pathologically by HE staining section. The results showed that VCPCO with dosages of 5, 10 mL/kg and 20 mL/kg could decrease the levels of ALT, AST, LDH, TG, TC in serum and MDA in liver, and increase the levels of SOD and GSH-Px in liver. Meanwhile, the results of liver histopathology were consistent with those of biochemical markers. Among them, the effect of high dosage of VCPCO (20 mL/kg) was better than the positive control bifendate. Results indicated that VCPCO had a good protective effect on liver, and the mechanism might be related to its high content of antioxidative and functional compounds.

对看台事故的分析表明,节点损坏是导致结构整体倒塌的重要诱因之一。围绕苏州世乒赛装配式钢结构临时看台盘扣节点开展了研究。首先,介绍了该项目结构体系和盘扣节点的设计,进而考虑材料和接触的非线性,建立了盘扣节点的三维有限元模型;随后,针对衔接盘抗剪承载力、横杆连接节点抗拉(压)承载力和斜撑连接节点抗拉(压)承载力开展了非线性分析,获取了节点的屈服承载力,并将横杆节点承载力与文献已有试验结果进行了对比,验证了数值模拟方法的准确性;最后,对临时看台整体结构建立模型进行了设计荷载下的受力分析,并选取了其中一个9根杆件交汇节点,开展了设计荷载下盘扣节点复杂荷载情况下的非线性力学分析。结果表明:设计荷载下,结构横杆和斜撑最大轴力均在节点屈服承载力的范围内。同时,所分析的复杂受力节点基本处于弹性状态,所做研究可为类似临时看台的设计与建造提供参考。

文章提出了两种利用SOA（半导体光放大器）的XGM（交叉增益调制）和FBG（光纤布拉格光栅）光学生成对称型UWB（超宽带）信号的新方法。分析了该方法的工作原理并进行了仿真实验,分别得到了符合FCC（美国联邦通信委员会）标准的中心频率为5.35 GHz、相对带宽为114%以及中心频率为4.7 GHz、相对带宽为132%的对称型UWB信号,仿真结果验证了该方法的可行性。文章还分析了这两种方法存在的问题。

文章设计了一个基于频率间插复用的DWDM-ROF（密集波分复用-光载无线）系统,使每个信道载波与边带之间的空闲频段得到利用,从而提高了DWDM-ROF系统的频谱利用率。同时,为该系统设计了一种基于FBG（光纤布拉格光栅）的新颖的解复用器。数据传输的仿真实验不仅验证了该方法的可行性,还显示出了该系统具有良好的抗信道串扰能力。

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Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department 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.)

The technology of garment relighting carries substantial research significance in the domains of online garment sales virtual fitting and personalized customization. Moreover relighting methods based on implicit 3D models have garnered considerable attention in the fields of computer vision and computer graphics. However existing scene relighting techniques face inherent challenges when applied to garment datasets such as texture noise and relighting distortion. To address these shortcomings this paper proposes an innovative garment relighting method that operates in the feature tensor to effectively mitigate these issues. The relighting process involves incorporating the relighting component into the tensorial radiance fields to jointly optimize the feature space. To simulate the direct ambient light and the indirect light reflected between garment surfaces Spherical Gauss and MLP techniques are employed to construct an incident light field. Additionally a gradient-guided smoothing strategy is utilized to optimize the extraction of parameters from the bidirectional reflectance distribution function model which are derived from the feature tensor. Finally the garment relighting image is rendered by combining the incident light field the bidirectional reflection distribution model and the feature tensor using the simplified reflectivity equation. This article presents experimental results on three garment datasets comparing them with advanced methods such as Physg and InvRender. The results demonstrate that our method achieves an average improvement of about 4. 549% in generating garment images from novel view and approximately 9. 922% in generating garment images under relighting conditions as evaluated using three indicators. The article visually demonstrates the effectiveness of our proposed method in reducing texture noise and reillumination distortion. Ablation experiments are also conducted examining the impact of gradient-guided smoothing strategies and the use of single or multiple addition feature tensor for garment feature storage. The article shows that using multiple addition feature tensor does not enhance the quality of garment image generation but increases the training time. By comparison using addition single feature tensor achieves a minimal improvement of only 0. 327% but significantly increases the training time. Our method which employs a single feature tensor significantly shortens training time and improves the quality of garment relighting images by approximately 8. 870% compared to the other models. The article compares the experimental results of different lighting strategies DL DL + SGID DL + MLPID DL + SGID + Vis and DL + MLPID + Vis in garment image rendering. The results indicate that the combination of indirect light direct light and visibility achieves the best generation outcomes. The article compares experimental results obtained by employing different gradient descent strategies GD GD + RSL and GD + GGS in garment image rendering. The results indicate that our proposed gradient-guided smoothing strategy enhances the quality novel view garment images by approximately 4. 583% and relighting garment images by about 6. 096% compared to traditional relative smoothing loss methods. This paper introduces a garment relighting model based on Tensorf for 3D garment relighting. The relighting module is integrated into Tensorf which encompasses the incident light field combined with indirect light the BRDF model based on the Disney principle and the simplified reflectance equation. As a result garment relighting from any perspective is achieved. The experimental results demonstrate that the proposed garment relighting model effectively leverages the feature tensor from Tensorf. The introduction of gradient smoothing loss contributes to the improved accuracy of BRDF parameters reduces texture noise commonly encountered in existing methods applied to garment datasets and enhances the accuracy of relighting. The evaluation indexes indicate that the model produces superior results compared to existing advanced methods for generating novel view images and relighting outcomes. However it is worth noting that the surface reconstruction in this method relies on the tensor radiation field which may result in rendering points with low effectiveness leading to errors in the reconstruction of hollow areas on the surface. Future work will address this issue accordingly. [ABSTRACT FROM AUTHOR]

Copyright of Command Control & Simulation / Zhihui Kongzhi yu Fangzhen is the property of Command Control & Simulation 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.)

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology 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.)

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering 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.)

BACKGROUND: Studies have reported that alendronate intake significantly increases bone mineral density in patients with osteoporosis. OBJECTIVE: To analyze and compare the changes in metabolites before and after alendronate intervention in ovariectomized rats by chromatography-mass spectrometry, and to further explore the specific mechanism and target of alendronate in the treatment of osteoporosis. METHODS: A total of 36 female Sprague-Dawley rats were randomly divided into model group, alendronate sodium group and sham operation group. The osteoporosis model was established by ovariectomy in the first two groups. Four weeks after modeling, the rats in the alendronate group were intragastrically given alendronate sodium, while those in the sham operation group and model group were given equal volume of normal saline. After 12 weeks of continuous gavage, the metabolites of the lumbar spine were analyzed by chromatography-mass spectrometry, and the common differential metabolites were obtained, which were analyzed by bioinformatics such as Kyoto Gene and Genome Encyclopedia pathway. RESULTS AND CONCLUSION: Totally 17 different metabolites were obtained in the three groups. The enrichment analysis of the Kyoto Encyclopedia of Genes and Genomes showed that alendronate sodium could regulate unsaturated fatty acid biosynthesis, linoleic acid metabolism and other pathways to protect ovariectomized rats. These results indicate that alendronate sodium may exert its anti-osteoporosis effect by interfering with unsaturated fatty acid bioanabolism and linoleic acid metabolism, so as to achieve the purpose of preventing osteoporosis. [ABSTRACT FROM AUTHOR]

Copyright of Acta Prataculturae Sinica is the property of Acta Prataculturae Sinica 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.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department 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.)

Objective To explore the effect of sodium hyaluronate gel combined with collagen injection on improving nasolabial groove. Methods From October 2022 to October 2023, 35 cases of nasolabial fold wrinkles were treated in the Department of Burn and Plastic Surgery of the Third Affiliated Hospital of Naval Military Medical University. Fill the nasal base with hyaluronic acid combined with collagen to fill nasolabial fold wrinkles, and were followed up and photographed 1, 3, 6 and 12 months after operation. Statistical WSRS score, GAIS score, measurement of facial convexity, incidence of adverse events, patient satisfaction. Results The WSRS scores of 35 patients were (1.23±0.42), (1.51±0.57), (1.71±0.46) and (2.03±0.67) respectively at 1, 3, 6 and 12 months after injection. GAIS scores were (4.43 ±0.55), (3.77± 0.54), (3.14± 0.42) and (2.26±0.44) respectively at 1, 3, 6 and 12 months after injection. The facial convexity at 1, 3, 6 and 12 months after injection was (172.80。±1.55。), (173.91。±1.48。), (174.89。±1.53。) and (175.71。±1.76。) respectively, compared with that before injection (176.63。± 1.80。). There were 4 cases of edema (11.4%) and 1 case of induration (2.9%) after injection. The totalsatisfaction rate of patients was 85.7%(30/35). Conclusion Sodium hyaluronate gel combined with collagen injection is a safe, comfortable, effective and lasting method to improve nasolabial groove, which has high aesthetic value and is a better way to improve nasolabial fold wrinkles. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of High Pressure Physics is the property of Chinese Journal of High Pressure Physics 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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Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics 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.)

Copyright of Journal of Hainan Medical University is the property of Journal of Hainan Medical College 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.)

Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department 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.)

Copyright of Journal of Hainan Medical University is the property of Journal of Hainan Medical College 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.)

Northwest Helan Mountain's East Foothill is considered as one of best regions for grapes growing and fermenting. Helan Mountain's East Foothill has been divided to 5 wine origin included Shizuishan, Yinchuan, Yongning, Qingtongxia and Hongsibu. These still not establishes a scientific approach to classify and manage the wine origin because of different terroir. This study analyzed correlation and origin’s variance wine color and taste indicators producing by Helan Mountain's East Foothill, and identified the color and taste indicators relating to wine origin based on the leaves node weights of random forest. Then, the Fourier transform near infrared spectra (FT-NIR) and chemometrics methods were used to construct quantitative analysis models for each indicator. Finally, using the database composed by the predictive values of the color and taste indicators as the input layer, an artificial neural networks (ANN) model with ReLU as the optimal activation function was trained to classify the specific origin of wine from Helan Mountain's East Foothill. The research results indicated that tartaric acid esters and pH values had significant difference between the wine from different origins, and many indicators had strong correlation with other indicator. Based on the analysis of removing low weights parameters one by one, 14 wine color and taste indicators (lightness L*, redness a*,yellowness b*, chroma C*ab , total anthocyanins, monomer anthocyanin, polymeric anthocyanins, ionization index, flavonol, total tannin, ethanol index, tartaric acid ester, pH value, titrable acid) were considered as relevant to the origin. The FT-NIR quantitative analysis models of all 14 wine color and taste indicators had the bigger determination coefficient (r²c) than 0.95, the bigger relative percent deviation (RPDc) than 5, smaller root mean squared error (RMSEC) than 5% of the mean of each indicator for calibration set; and had the bigger determination coefficient (r²v) than 0.9, the bigger relative percent deviation (RPDv) than 2.5, smaller root mean squared error (RMSEV) than 15.7% of the mean of each indicator for validation set. The FT-NIR models had good quantitative prediction ability for 14 wine color and taste indicators. The 3 kinds of ANN models were established with different activation function include sigmoid, tanh and ReLU. The accuracies for determining of the origin of dry red wines were 84.06%, 91.30% and 94.20% separately. The model with ReLU as the activation function was proved to be the best one. Further analysis shows that the best model has 100% sensitivity and 100% accuracy in classifying the Shizishan wine samples, 100% sensitivity and 90% accuracy in classifying the Yanchuan wine samples, 87.5% sensitivity and 93.33% accuracy in classifying the Yongning wine samples, 94.74% sensitivity and 100% accuracy in classifying the Qingtongxia wine samples, 92.31% sensitivity and 92.31% accuracy in classifying the Hongsibu wine samples. The results indicated that the model proposed in this study can accurately discriminate the specific origin of wine from the Helan Mountain's East Foothill. This study would provide technical support for the product zoning management of dry red wines in the Helan Mountain's East Foothill, and help the establishment and development of Chinese wine origin protection system. [ABSTRACT FROM AUTHOR]

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