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GIS-Based Forest Fire Risk Model: A Case Study in Laoshan National Forest Park, Nanjing

REMOTE SENSING 2021年第18期13卷

作者： Zhao, Pengcheng Zhang, Fuquan lin, Haifeng Xu, shuwen Nanjing Forestry Univ Coll Informat Sci & Technol Nanjing 210037 Peoples R China Xidian Univ Natl Lab Radar Signal Proc Xian 710071 Peoples R China

Fire risk prediction is significant for fire prevention and fire resource allocation. Fire risk maps are effective methods for quantifying regional fire risk. Laoshan National Forest Park has many precious natural resources and tourist attractions, but there is no fire risk assessment model. This paper aims to construct the forest fire risk map for Nanjing Laoshan National Forest Park. The forest fire risk model is constructed by factors (altitude, aspect, topographic wetness index, slope, distance to roads and populated areas, normalized difference vegetation index, and temperature) which have a great influence on the probability of inducing fire in Laoshan. Since the importance of factors in different study areas is inconsistent, it is necessary to calculate the significance of each factor of Laoshan. After the significance calculation is completed, the fire risk model of Laoshan can be obtained. Then, the fire risk map can be plotted based on the model. This fire risk map can clarify the fire risk level of each part of the study area, with 16.97% extremely low risk, 48.32% low risk, 17.35% moderate risk, 12.74% high risk and 4.62% extremely high risk, and it is compared with the data of MODIS fire anomaly point. The result shows that the accuracy of the risk map is 76.65%.

关键词： environmental preservation forest fire GIS fire risk map prediction

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竹条铺设间距不同的敷面墙板竖向承载力试验

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材料导报 2024年第S2期38卷 652-657页

作者：杨舒雯潘文苏何先柏文峰邓林昆明理工大学建筑工程学院昆明650500 云南省抗震技术研究中心昆明650500 昆明理工大学建筑与城市规划学院昆明650500

以方木为骨架、正交斜放竹条敷面制成的竹木墙板,其竖向承载力与敷面竹条铺设间距密切相关,在确保竹条敷面墙板满足承载要求的同时,兼顾经济性的竹条铺设间距问题值得探究。本工作设计制作了四组敷面竹条间距不同的竹木墙板试件,通过开... 详细信息

以方木为骨架、正交斜放竹条敷面制成的竹木墙板,其竖向承载力与敷面竹条铺设间距密切相关,在确保竹条敷面墙板满足承载要求的同时,兼顾经济性的竹条铺设间距问题值得探究。本工作设计制作了四组敷面竹条间距不同的竹木墙板试件,通过开展墙板竖向承载力试验,对比分析各墙板的破坏特征与极限承载能力等关键指标,并结合试验荷载-位移曲线和荷载-应变曲线,得出最佳竹条铺设间距。试验结果表明:竹条间距为10 mm与20 mm的墙板均具有较高承载力且二者极限承载能力相当(最大值偏差仅为2.2%),同时,两组墙板中敷面竹条性能发挥也体现出较小差别。因此,在考虑极限承载能力相同的情况下,选择竹条间距为20 mm的墙板在实际应用中可更好地兼顾实用性与经济效益。

关键词：木方骨架正交斜放竹条不同铺设间距竖向承载力

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Trap-Induced Dense Monocharged Perfluorinated Electret Nanofibers for Recyclable Multifunctional Healthcare Mask

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ACS NANO 2021年第3期15卷 5486-5494页

作者： lin, Shizhe Wang, Shuixiang Yang, Wei Chen, shuwen Xu, Zisheng Mo, Xiwei Zhou, He Duan, Jiangjiang Hu, Bin Huang, Liang Huazhong Univ Sci & Technol Wuhan Natl Lab Optoelect Wuhan 430074 Hubei Peoples R China

Recently, wearable and breathable healthcare devices for air filtering and real-time vital signs monitoring have become urgently needed since virus and particulate matter (PM) cause serious health issues. Herein, we present a trap-induced dense monocharged hybrid perfluorinated electret nanofibrous membrane (HPFM) for highly efficient ultrafine PM0.3 removal with an efficiency of 99.712% under low pressure drop (38.1 Pa) and high quality factor of 0.154 Pa-1. Furthermore, a recyclable multifunctional healthcare mask is constructed by integrating the HPFM-based nanogenerator, which realizes efficient PM0.3 filtering and wireless real-time human respiration monitoring simultaneously. More importantly, the performance of this mask is still relatively stable even at 100%RH humidity and 92 degrees C temperature conditions for 48 h, which infers that it can be reused after disinfection. The strategy of fabricating HPFM provides an approach to obtain charge-rich stable electret materials, and the design of multifunctional masks demonstrates their potential application for future personal protection and health monitoring devices.

关键词： trap real charge perfluorinated polymer electret nanofiber personal protection health monitoring

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竹条敷面墙板竖向承载力试验研究

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材料导报 2024年第S2期38卷 658-663页

作者：邓林潘文柏文峰杨舒雯苏何先昆明理工大学建筑工程学院昆明650500 云南省抗震工程技术研究中心昆明650500 昆明理工大学建筑与城市规划学院昆明650500

为研究竹条敷面墙板的抗压承载力,以墙板骨架类型和竹条铺设方式为主要考察因素制作试件并开展抗压试验。通过对墙板进行竖向抗压试验,研究不同类型墙板的抗压能力和破坏特征。试验研究表明:在以竖向骨架为变量的墙板中,圆竹骨架墙板竖... 详细信息

为研究竹条敷面墙板的抗压承载力,以墙板骨架类型和竹条铺设方式为主要考察因素制作试件并开展抗压试验。通过对墙板进行竖向抗压试验,研究不同类型墙板的抗压能力和破坏特征。试验研究表明:在以竖向骨架为变量的墙板中,圆竹骨架墙板竖向承载力大于木骨架墙板,大于冷弯薄壁型钢圆竹骨架墙板;在以竹条铺设方式为变量的墙板中,双侧竹条敷面的墙板承载力大于单侧竹条敷面的墙板。不同墙板所能承受的压力平均值最大为292.22 kN,最小为143.12 kN,每种墙板的竖向承载力均满足轻型木结构建筑在楼面荷载作用下的承载力要求。

关键词：竹木复合墙板正交斜放竹条抗压

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Influencing Factors of a Cooling System Based on Low-Temperature Mine Water as a Direct Cooling Source

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ENERGIES 2022年第23期15卷

作者： Jiang, Heguo Cui, shuwen Mu, Xingwang Tang, lin Wang, Yuheng Jian, Congguang Chen, Chen Yiliang Chihong Min Co Ltd Zhaotong 657000 Peoples R China China Univ Min & Technol Sch Safety Engn Xuzhou 221116 Peoples R China

With the depletion of shallow metal mineral resources, deep mining has become more common. In the process of deep mining, heat hazards in mines seriously threaten the health of personnel and the safety of mining operations. According to the flow and low-temperature characteristics of abundant water in Maoping Lead Zinc Mine, this paper proposes the direct use of the low-temperature water inflow of the mine as the cold source by which to conduct the heat exchange with a single spiral-tube heat exchanger for mine cooling. An experimental platform was built for the cooling system to allow us to explore the mechanism of the influence of the inlet air volume and air temperature and the inlet water temperature and flow on the cooling effect of the single spiral-tube heat exchanger. It was found that with the increase in the inlet air volume and inlet water temperature, the cooling efficiency of the heat exchanger decreased, while with the increase in the inlet air temperature, the cooling efficiency of the heat exchanger increased. Within the experimental range, 127.2 m(3)/h was found to be the optimum inlet air volume, and 33.0 degrees C was the most appropriate inlet air temperature;the water temperature of Maoping Coal Mine is about 20 degrees C throughout the year, and the industrial test site can reduce the wind temperature of 31.5 degrees C to 23.9 degrees C. The inlet water flow is positively related to the cooling effect. With the increase in the water flow, the outlet temperature of the air flow at each working point was continuously reduced, and the cooling effect of the heat exchanger was improved. The moisture content of the inlet air flow can be reduced by increasing the low-temperature inlet water flow. Through experiments, the feasibility of the cooling system that directly uses the mine's low-temperature water as the cold source was verified. A multiple linear regression analysis equation for the cooling system model is proposed, which provides a reference

关键词： mine heat hazard low-temperature water inflow single spiral-tube heat exchanger heat exchange efficiency

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Nuciferine administration in C57BL/6J mice with gestational diabetes mellitus induced by a high-fat diet: the improvement of glycolipid disorders and intestinal dysbacteriosis

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FOOD & FUNCTION 2021年第22期12卷 1174-1189页

作者： Tang, Zhuohong Luo, Ting Huang, Peng Luo, Mi Zhu, Jianghua Wang, Xing lin, Qingmei He, Zihao Gao, Pingming Liu, shuwen Southern Med Univ Affiliated Foshan Matern & Child Healthcare Hosp Dept Pharm Foshan 528000 Peoples R China Southern Med Univ Sch Pharmaceut Sci Guangdong Prov Key Lab New Drug Screening Guangzhou 510515 Peoples R China Southern Med Univ Affiliated Foshan Matern & Child Healthcare Hosp Foshan Maternal & Child Hlth Res Inst Foshan 528000 Peoples R China Sun Yat Sen Univ Nephrol Div Affiliated Hosp 3 Guangzhou 510630 Peoples R China Huazhong Univ Sci & Technol Union Hosp Dept Pharm Tongji Med Coll Wuhan 430022 Peoples R China

Gestational diabetes mellitus (GDM) has become a global health concern as the main result of its contribution to the high risk of adverse pregnancy outcomes for both the mother and fetus. However, there is absence of an ideal and widely acceptable therapy. Nuciferine has previously been shown to exert beneficial effects in various metabolic diseases. This study aimed to investigate the potential therapeutic efficacy of nuciferine on GDM in C57BL/6J mice induced by a high-fat diet (HFD), which has not been reported before. The results showed that nuciferine improved glucose intolerance, reduced lipid accumulation and increased the glycogen content within hepatocytes, and decreased placental lipid and glycogen deposition, thus ameliorating glycolipid disorders in GDM mice. Additionally, nuciferine protected against histological degeneration of metabolism-associated critical organs including the liver, pancreas, and abdominal adipose tissue. Most interestingly, nuciferine could correct intestinal dysbacteriosis in GDM mice, as evidenced by the elevation of probiotic abundances consisting of Akkermansia, Lactobacillus, and Bifidobacterium, which were all negatively correlated with serum and liver triglyceride (TG) and positively associated with hepatic glycogen, and the reduction of conditional pathogen abundances including Escherichia-Shigella and Staphylococcus, and the latter was positively related to serum and liver TG and negatively linked with liver glycogen. Collectively, these findings suggest that nuciferine as a food-borne strategy played important roles in the management of GDM.

关键词： Metabolism

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A Lightweight MBConv-Based Model for Real-Time Load Identification

A Lightweight MBConv-Based Model for Real-Time Load Identifi...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： shuwen Zhang Pengfei Lu Zhipeng lin Chang Dai Jing Jin Chenkai Zhong Guolong Liu Zibin Pan School of Science and Engineering The Chinese University of Hong Kong Shenzhen China Ltd Zhejiang State Grid Zhejiang Electric Power Co. China Ltd Zhejiang Zhejiang Huayun Information Technology Co. China School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore

ISBN: (数字)9798331523527

ISBN: (纸本)9798331523534

Non-Intrusive Load Monitoring (NILM) disaggregates household power consumption into appliance-level data, offering economic and privacy-preserving solution for energy management. However, many SOTA models such as transformers require high computational power and large datasets, posing practical and privacy challenges. Inspired by lightweight CNN advancements, this paper proposes a real-time MBConv-based model that reduces parameters while maintaining strong performance.

关键词： Adaptation models Load monitoring Biological system modeling Computational modeling Transformers Real-time systems Convolutional neural networks Kernel Energy management Load modeling

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Pterostilbene effectively inhibits influenza A virus infection by promoting the type I interferon production

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MICROBES AND INFECTION 2023年第3期25卷 105062页

作者： Wu, Wenjiao Ye, Yilu Zhong, Yingyuan Yan, Xiukui lin, Jianguo Qiu, Jianxiang Liu, shuwen Fang, Zhixin Guangdong Second Prov Gen Hosp Dept Pharm 466 Middle Xingang Rd Guangzhou 510317 Peoples R China Southern Med Univ Sch Pharmaceut Sci Guangdong Prov Key Lab New Drug Screening 1838 Shatai South Rd Baiyun Dist Guangzhou 510515 Peoples R China Sun Yat Sen Univ Jiangmen Cent Hosp Affiliated Jiangmen Hosp Dept Pharm 23 Haipang StNorth St Jiangmen 529030 Peoples R China

With the prevalence of novel strains and drug-resistant influenza viruses, there is an urgent need to develop effective and low-toxicity anti-influenza therapeutics. Regulation of the type I interferon antiviral response is considered an attractive therapeutic strategy for viral infection. Pterostilbene, a 3,5dimethoxy analog of resveratrol, is known for its remarkable pharmacological activity. Here, we found that pterostilbene effectively inhibited influenza A virus infection and mainly affected the late stages of viral replication. A mechanistic study showed that the antiviral activity of pterostilbene might promote the induction of antiviral type I interferon and expression of its downstream interferon-stimulated genes during viral infection. The same effect of pterostilbene was also observed in the condition of polyinosinic-polycytidylic acid (poly I:C) transfection. Further study showed that pterostilbene interacted with influenza non-structural 1 (NS1) protein, inhibited ubiquitination mediated degradation of RIG-I and activated the downstream antiviral pathway, orchestrating an antiviral state against influenza virus in the cell. Taken together, pterostilbene could be a promising anti-influenza agent for future antiviral drug exploitation and compounds with similar structures may provide new options for the development of novel inhibitors against influenza A virus (IAV). (c) 2022 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.

关键词： Pterostilbene Influenza A virus Type I interferon NS1 RIG-I

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Metal-phenolic network for cancer therapy

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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY 2023年 81卷

作者： Chang, Yufeng Cui, Pengfei Zhou, shuwen Qiu, lin Jiang, Pengju Chen, Shaoqing Wang, Cheng Wang, Jianhao Changzhou Univ Sch Pharm Changzhou 213164 Jiangsu Peoples R China Nanjing Med Univ Peoples Hosp Changzhou 2 Changzhou 213003 Peoples R China

Polyphenols are a class of chemical substances widely existing in plants, which have good antioxidant activity. So far, polyphenols are often used as antioxidants and found in a variety of food additives. Polyphenols are also used to fight thrombosis, fight ultraviolet radiation, and prevent osteoporosis. In recent years, the metal phenolic network (MPN) based on polyphenol metal coordination has been recognized in a variety of biomedical functional materials due to its excellent properties. Polyphenols as an excellent organic ligands, can coordinate with a variety of metal ions to form new materials with different morphology and function. This paper will focus on the main characteristics of phenolic networks and their application in cancer therapy.

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Activation of Piezo1 promotes osteogenic differentiation of aortic valve interstitial cell through YAP-dependent glutaminolysis

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SCIENCE ADVANCES 2023年第22期9卷 eadg0478页

作者： Zhong, Guoheng Su, shuwen Li, Juncong Zhao, Hengli Hu, Dongtu Chen, Jun Li, Shichao lin, Yingwen Wen, Liming lin, Xiangjie Xian, Gaopeng Xu, Dingli Zeng, Qingchun Southern Med Univ Nanfang Hosp Dept Cardiol State Key Lab Organ Failure Res Guangzhou 510515 Peoples R China Southern Med Univ Guangdong Prov Key Lab Shock & Microcirculat Guangzhou 510515 Peoples R China Bioland Lab Guangzhou Regenerat Med & Hlth Guangdo Guangzhou Peoples R China

Hemodynamic overload and dysregulation of cellular metabolism are involved in development of calcific aortic valve disease (CAVD). However, how mechanical stress relates to metabolic changes in CAVD remains unclear. Here, we show that Piezo1, a mechanosensitive ion channel, regulated glutaminase 1 (GLS1)-mediated gluta-minolysis to promote osteogenic differentiation of valve interstitial cells (VICs). In vivo, two models of aortic valve stenosis were constructed by ascending aortic constriction (AAC) and direct wire injury (DWI). Inhibition of Piezo1 and GLS1 in these models respectively mitigated aortic valve lesion. In vitro, Piezo1 activation induced by Yoda1 and oscillatory stress triggered osteogenic responses in VICs, which were prevented by Piezo1 inhi-bition or knockdown. Mechanistically, Piezo1 activation promoted calcium-dependent Yes-associated protein (YAP) activation. YAP modulated GLS1-mediated glutaminolysis, which enhanced osteogenic differentiation through histone acetylation of runt-related transcription factor 2 (RUNX2) promoters. Together, our work pro-vided a cross-talk between mechanotransduction and metabolism in the context of CAVD.

关键词： Chemical activation

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