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091无核沃柑在梅州市的引种表现及优质丰产栽培技术

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果树资源学报 2024年第4期5卷 119-122页

作者：张志标马瑞丰陶星星苟文涛曾莎芮刘杰梁丽丽梅州市农林科学院果树研究所广东梅州514000 梅州市农林科学院广东梅州514000

梅州市农林科学院果树研究所于2017年将091无核沃柑引种到广东省梅州市进试栽,该品种长势较强,定植2年后株高达213 cm,冠幅208 cm×220 cm;果个大小适中,果形呈扁圆形,果面光滑;平均单果质量130 g,可食率达78%,可溶性固形物质量分数达14... 详细信息

梅州市农林科学院果树研究所于2017年将091无核沃柑引种到广东省梅州市进试栽,该品种长势较强,定植2年后株高达213 cm,冠幅208 cm×220 cm;果个大小适中,果形呈扁圆形,果面光滑;平均单果质量130 g,可食率达78%,可溶性固形物质量分数达14%以上;在梅州12月下旬开始进入成熟期。综合表现肉脆、水分充足、糖度高、口感佳,可结合实际在梅州地区推广种植。

关键词： 091无核沃柑梅州市栽培技术

南鹤虱水提物及乙醇提取物对小鼠皮肤刺激性的初步研究

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中国民族民间医药 2024年第2期33卷 14-17,23页

作者：赵思烨叶明星陈山珊丘志龙苟文韬颜伟泓张伟云厦门医学院药学系/厦门市中药生物工程重点实验室福建厦门361023 福建医科大学药学院福建福州350122

目的:研究南鹤虱的水提物和乙醇提取物对皮肤产生刺激性反应,以评价其安全性。方法:参考国家食品药品监督管理总局发布的《中华人民共和国国家标准化妆品安全性评价程序和方法》,通过皮肤刺激性实验,分析南鹤虱的水提物及乙醇提取物皮... 详细信息

目的:研究南鹤虱的水提物和乙醇提取物对皮肤产生刺激性反应,以评价其安全性。方法:参考国家食品药品监督管理总局发布的《中华人民共和国国家标准化妆品安全性评价程序和方法》,通过皮肤刺激性实验,分析南鹤虱的水提物及乙醇提取物皮肤应用的安全性,为南鹤虱的开发利用提供理论依据。结果:一次给药皮肤刺激性实验中,小鼠的皮肤反应刺激强度得分均小于0.5分;连续多次给药皮肤刺激性实验中,小鼠的皮肤反应刺激强度得分均为0分,表明南鹤虱的水提物和乙醇提取物对小鼠的正常皮肤及划伤皮肤均无刺激性。结论:南鹤虱的水提物和乙醇提取物对小鼠的正常皮肤及划伤皮肤均无刺激性,为今后开发南鹤虱护肤的相关产品提供一定的参考价值。

关键词：南鹤虱水提物乙醇提取物皮肤刺激性

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Optimizing urban block morphologies for net-zero energy cities:Exploring photovoltaic potential and urban design prototype

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Building Simulation 2024年第4期17卷 607-624页

作者： Xiaotian Geng Dong Xie Zhonghua gou School of Urban Design Wuhan UniversityWuhanChina

The morphology of urban areas plays a crucial role in determining solar potential,which directly affects photovoltaic capacity and the achievement of net-zero *** study focuses on the City of Melbourne to investigate the utilization of solar energy across different urban densities and proposes optimized *** analysis encompasses blocks with diverse population densities,examining medium and high-density *** utilizing a multi-objective genetic optimization approach,the urban morphology of these blocks is *** findings indicate that low-density blocks exhibit photovoltaic potential ranging from 1 to 6.6 times their total energy *** and high-density blocks achieve photovoltaic potential levels approximately equivalent to 40%-85%of their overall energy ***,significant variations in photovoltaic potential are observed among different urban forms within medium and high-density ***“elevated corners with central valley”prototype is proposed as an effective approach,enhancing the overall photovoltaic potential by approximately 14%.This study introduces novel analytical concepts,shedding light on the intricate relationship between urban morphologies and photovoltaic potential.

关键词： net-zero energy solar energy urban density urban morphology multi-objective optimization photovoltaic potential

Impact of COVID-19 on the energy consumption of commercial buildings:A case study in Singapore

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Energy and Built Environment 2024年第3期5卷 364-373页

作者： Senhong Cai Zhonghua gou School of Urban Design Wuhan UniversityWuhanChina

Numerous studies have demonstrated that commercial activities have significantly reduced during COVID-19,while there are few studies disclosing the consequent impacts on the energy consumption of commercial *** study explores the changes in energy consumption of different types of commercial buildings in Sin-gapore under the impact of the pandemic,using commercial building energy performance data from 2017 to 2020(n=540).The sampled buildings include 93 hotel buildings,303 office buildings,106 retail buildings,and 38 mixed *** analysis mainly used linear regression and paired sample *** results showed that relative to 2019,the mean energy use intensity(EUI)of sampled commercial buildings decreased by 56.77 kWh/m^(2)in the pandemic year(2020),a plunge of 19.9%.The extent to which the EUI of each type of commercial building is affected by the pandemic is found as:mixed development>retail>office>*** study also identi-fied the factors that significantly influenced the EUI of commercial buildings before and during the *** results of the study complement existing knowledge about the factors influencing energy consumption in com-mercial buildings by considering the impact of the pandemic and furthermore contribute to the improvement of energy management in commercial buildings by providing directions for building energy efficiency approaches.

关键词： Commercial buildings Energy consumption Energy use intensity Impact of COVID-19 Influential factors

A Tightly Coupled Dipole Array with Diverse Element Reflection Phases for RCS Reduction

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Chinese Journal of Electronics 2024年第2期33卷 449-455页

作者： Yuewen gou Yikai CHEN Shiwen YANG University of Electronic Science and Technology of China

This paper proposes a novel low scattering tightly coupled dipole array(TCDA), aiming to reduce the radar cross section(RCS) of phased antenna arrays under a certain oblique incident wave. First, we build three types of antenna elements that exhibit similar radiation characteristics but diverse reflection phase differences based on the proposed theoretical analysis. The required reflection phase difference is achieved by using different dielectric superstrates for each antenna element. Then, by arranging the three types of subarrays next to each other, a low scattering TCDA(8 × 9) is designed. Meanwhile, a reference antenna array with a single type of antenna element is also constructed. To demonstrate the effectiveness of the proposed RCS reduction technique, simulated and measured results of the reference and proposed antenna array are compared. Both antenna arrays operate over the 6–18 GHz frequency band and can scan up to ±45° in the E-/H-planes. However, the proposed antenna array achieves a significant monostatic RCS reduction over 8–12 GHz, with a maximum reduction value of 7.55 d B. It indicates that this diverse element reflection phase technique is a good candidate for wideband RCS reduction.

关键词： Antenna measurements Phased arrays Dipole antennas Antenna theory Scattering Reflector antennas Reflection

Comparatively study on the related indexes of combustion characteristics of different formula biomass fuels

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Comparatively study on the related indexes of combustion cha...

Facile synthesis of composite polyferric magnesium-silicate-sulfate coagulant with enhanced performance in water and wastewater

作者： gou wentao LI Maojun WAND Xiaojian ZHONG Junzhou CHEN Jianjun GUO Hongyan DENG Shiyuan Tobacco Laboratory South China Agricultural University Guangdong Shaoguan Municipal Tobacco Company

In order to study the feasibility of the application of biomass fuel in tobacco leaf curing, we used the high efficiency biomass pellet molding machine(HCK045A type) to produce 9 different formula biomass pellet fuels. Taking the 100% pulverized coal as contrast, we studied and compared the structure components, industrial analysis, heat value, ash components, ash fusibility and physical properties of different formulas. The results showed that: 50% sawdust+50% tobacco straw formula had higher biological components such as cellulose and lignin. It also had higher volatile and fixed carbon content, lower ash and water content, higher ash melting point temperature, short ignition time, long combustion duration, low bottom ash clinkering rate and better performance of physical properties such as breaking strength and water permeability. Compared with CK, although the biomass fuel’s heat value is slightly lower, other combustion performance indexes can reach the technical requirements of tobacco leaf curing. So it can be used as an alternative source of energy for tobacco leaf curing.

关键词： biomass fuel combustion characteristics structure components industry analysis physical properties

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 574-584页

作者： Xiangtao Huo Rongxia Chai Lizheng gou Mei Zhang Min Guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The coagulation process is a widely applied technology in water and wastewater *** composite polyferric mag-nesium-silicate-sulfate(PFMS)coagulants were synthesized using Na_(2)SiO_(3)·9H_(2)O,Fe_(2)(SO_(4))_(3),and MgSO_(4) as raw materials in this *** effects of aging time,Fe:Si:Mg,and OH:M molar ratios(M represents the metal ions)on the coagulation performance of the as-pre-pared PFMS were systematically investigated to obtain optimum *** results showed that PFMS coagulant exhibited good co-agulation properties in the treatment of simulated humic acid-kaolin surface water and reactive dye *** the molar ratio was controlled at Fe:Si:Mg=2:2:1 and OH:M=0.32,the obtained PFMS presented excellent stability and a high coagulation *** removal efficiency of ultraviolet UV254 was 99.81%,and the residual turbidity of the surface water reached 0.56 NTU at a dosage of 30 mg·L^(-1).After standing the coagulant for 120 d in the laboratory,the removal efficiency of UV254 and residual turbidity of the surface wa-ter were 88.12%and 0.68 NTU,respectively,which accord with the surface water treatment *** addition,the coagulation performance in the treatment of reactive dye wastewater was greatly improved by combining the advantages of magnesium and iron *** with polyferric silicate-sulfate(PFS)and polymagnesium silicate-sulfate(PMS),the PFMS coagulant played a better decolor-ization role within the pH range of 7-13.

关键词： polyferric-magnesium-silicate-sulfate composite coagulants water and wastewater excellent stability high coagulation ef-ficiency decolorization

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Frontiers of Computer Science 2024年第3期18卷 227-229页

作者： Qianwen gou Yunwei DONG YuJiao WU Qiao KE School of Computer Science Northwestern Polytechnical UniversityXi’an 710129China School of Mathematics and Statistics Northwestern Polytechnical UniversityXi’an 710129China

1 Introduction Program retrieval aims to enable the flexible retrieval of program snippets based on a natural language query,significantly accelerating software development *** shows that over 60%of developers perform program retrieval daily[1].Recent years have witnessed an increasing interest in deep learning-based program retrieval,which aims to construct embedding representations for program snippets and ***,the distribution of natural languages and programs is inconsistent,resulting in a semantic *** critical challenge is to bridge the semantic gap between the programming language and natural language,and accurately measure their similarity.

关键词： semantic similarity retrieval

MMCo:using multimodal deep learning to detect malicious traffic with noisy labels

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Frontiers of Computer Science 2024年第1期18卷 239-241页

作者： Qingjun YUAN Gaopeng gou Yuefei ZHU Yongjuan WANG Strategic Support Force Information Engineering University Zhengzhou 450001China Institute of Information Engineering Chinese Academy of SciencesBeijing 100093China

1 Introduction The success of a deep learning-based network intrusion detection systems(NIDS)relies on large-scale,labeled,realistic traffic[1,2].However,automated labeling of realistic traffic,such as by sandbox and rule-based approaches,is prone to errors[3],which in turn affects deep learning-based *** effective schemes for learning with noisy labels(LNL)have been proposed,among which the use of parallel networks for sample selection during training has been shown to be *** is argued that parallel networks can discriminate samples from different perspectives,thus adding additional information to the training *** centerpiece is maintaining disagreement of networks.

关键词： network networks modal