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YOLO-CRD:A Lightweight Model for the Detection of Rice Diseases in Natural Environments

Phyton-International Journal of Experimental Botany 2024年第6期93卷 1275-1296页

作者： Rui Zhang Tonghai Liu Wenzheng Liu Chaungchuang Yuan Xiaoyue seng Tiantian Guo Xue wang Tianjin Key Laboratory of Intelligent Breeding of Major Crops Tianjin Agricultural UniversityTianjin300392China College of Computer and Information Engineering Tianjin Agricultural UniversityTianjin300392China

Rice diseases can adversely affect both the yield and quality of rice crops,leading to the increased use of pesticides and environmental *** detection of rice diseases in natural environments is crucial for both operational efﬁciency and quality *** learning-based disease identiﬁcation technologies have shown promise in automatically discerning disease ***,effectively extracting early disease features in natural environments remains a challenging *** address this issue,this study proposes the YOLO-CRD *** research selected images of common rice diseases,primarily bakanae disease,bacterial brown spot,leaf rice fever,and dry tip nematode disease,from Tianjin *** proposed YOLO-CRD model enhanced the YOLOv5s network architecture with a Convolutional Channel Attention Module,Spatial Pyramid Pooling Cross-Stage Partial Channel module,and Ghost *** former module improves attention across image channels and spatial dimensions,the middle module enhances model generalization,and the latter module reduces model *** validate the feasibility and robustness of this method,the detection model achieved the following metrics on the test set:mean average precision of 90.2%,accuracy of 90.4%,F1-score of 88.0,and GFLOPS of *** the speciﬁc diseases,the mean average precision scores were 85.8%for bakanae disease,93.5%for bacterial brown spot,94%for leaf rice fever,and 87.4%for dry tip nematode *** studies and comparative analyses veriﬁed the effectiveness and superiority of the proposed *** researchﬁnd-ings can be applied to rice disease detection,laying the groundwork for the development of automated rice disease detection equipment.

关键词： Convolutional neural network one stage training rice disease deep learning

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Precise mode control of laser-written waveguides for broadband,low-dispersion 3D integrated optics

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Light(Science & Applications) 2024年第6期13卷 1186-1195页

作者： Yuying wang Lijing Zhong Kuen Yao Lau Xuhu Han Yi Yang Jiacheng Hu Sergei Firstov Zhi Chen Zhijun Ma Limin Tong Kin seng Chiang Dezhi Tan Jianrong Qiu College of Optical Science and Engineering Zhejiang University310027HangzhouChina Institute of Light+X Science and Technology College of Information Science and EngineeringNingbo University315211NingboChina School of Optoelectronic Science and Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University215006SuzhouChina Prokhorov General Physics Institute of the Russian Academy of Sciences Dianov Fiber Optics Research Center38 Vavilov str.Moscow119333Russia Zhejiang Lab 311121HangzhouChina College of Materials Science and Engineering Key Laboratory of Advanced Materials of Yunnan ProvinceKunming University of Science and Technology650093KunmingYunnanChina Department of Electrical Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina School of Materials Science and Engineering Zhejiang University310027HangzhouChina

Three-dimensional(3D)glass chips are promising waveguide platforms for building hybrid 3D photonic circuits due to their 3D topological capabilities,large transparent windows,and low coupling *** present,the key challenge in scaling down a benchtop optical system to a glass chip is the lack of precise methods for controlling the mode field and optical coupling of 3D waveguide ***,we propose an overlap-controlled multi-scan(OCMS)method based on laser-direct lithography that allows customizing the refractive index profile of 3D waveguides with high spatial precision in a variety of *** the basis of this method,we achieve variable mode-field distribution,robust and broadband coupling,and thereby demonstrate dispersionless LP21-mode conversion of supercontinuum pulses with the largest deviation ofming advantages over conventional planar waveguide-optic platforms for on-chip transmission and manipulation of ultrashort laser pulses and broadband supercontinuum.

关键词： waveguide mode dispersion

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Graphene quantum dots:preparations,properties,functionalizations and applications

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Materials Futures 2024年第2期3卷 36-84页

作者： Pin Tian Libin Tang Kar-seng Teng Shu-Ping Lau Kunming Institute of Physics 650223 KunmingYunnanPeople’s Republic of China Department of Electronic and Electrical Engineering Faculty of Science and EngineeringSwansea UniversityBay CampusFabian WaySwansea SA18ENUnited Kingdom Department of Applied Physics The Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China

Zero-dimensional graphene quantum dots(GQDs)exhibit many different properties,such as strong fluorescence,nonzero bandgap and solubility in solvents,compared to two-dimensional *** are biocompatible and have low toxicity;hence,they are widely used in the biomedical *** edge effect of GQDs is of particular interest because edge modification can regulate the performance of *** this review,various preparation methods for GQDs,which can be divided into three main categories,namely top-down,bottom-up and chemical methods,are *** unique optical,electrical,thermal and magnetic properties of GQDs are *** functionalization of GQDs by doping with heteroatoms and forming composites with other materials is studied,and the characteristics of these GQDs are also *** applications of these GQDs in the fields of optics,electricity,optoelectronics,biomedicine,energy,agriculture and other emerging interdisciplinary fields are reviewed to highlight the enormous potential of *** review reports on the recent advancement in GQD research and suggests future directions for the development of GQDs.

关键词： graphene quantum dots:preparations properties functionalizations and applications

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Characteristics of Biopellets Manufactured from Various Lignocellulosic Feedstocks as Alternative Renewable Energy Sources

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Journal of Renewable Materials 2024年第6期12卷 1103-1123页

作者： Anggara Ridho Putra Apri Heri Iswanto Arif Nuryawan Saptadi Darmawan ElvaraWindra Madyaratri Widya Fatriasari Lee seng Hua Petar Antov Harisyah Manurung Ade Pera Amydha Sudrajat Herawati Pendi Department of Forest Products Faculty of ForestryUniversitas Sumatera Utara.Kampus USU Padang BulanMedan20155Indonesia Research Center for Biomass and Bioproducts National Research and Innovation Agency(BRIN)Jl Raya Bogor KM 46 CibinongBogor16911Indonesia Department of Wood Industry Faculty of Applied SciencesUniversiti Teknologi MARA(UiTM)Cawangan Pahang Kampus JengkaShah Alam26400Malaysia Faculty of Forest Industry University of ForestrySofia1797Bulgaria

The increased valorization of renewable and cost-effective lignocellulosic feedstocks represents a viable,sustainable,and eco-friendly approach toward the production of biopellets as alternative energy *** aim of this research work was to investigate and evaluate the feasibility of using various lignocellulosic raw materials,i.e.,raru(Cotylelobium melanoxylon),mangrove(Rhizophora spp.),sengon(Paraserianthes falcataria),kemenyan toba(Styrax sumatrana),oil palm(Elaeis guineensis),manau rattan(Calamus manan),and belangke bamboo(Gigantochloa pruriens)for manufacturing biopellets with different particle *** raw materials used were tested for their moisture content,specific gravity,ash,cellulose,and lignin *** addition,thermal analyses,i.e.,calorific values,thermogravimetric analysis(TGA),and differential scanning calorimetry(DSC),were *** following properties of the biopellets produced were investigated:moisture content,volatile matter,ash content,fixed carbon,density,and thermal *** on an analysis of the raw materials,raru had the lowest moisture content(12%)and ash content(1.5%)and the highest specific gravity(1.2).Markedly,palm oil stem had the highestα-cellulose(55%)and lignin(37%)*** accordance with the SNI 8675:2018 standard requirements,biopellets with optimal properties(moisture content of 1.4%,ash content of 0.79%,density of 1.09 g/m^(3),calorific value of 4672 cal/g,and TGA residue of 13.9%),were manufactured from raru wood.

关键词： Biomass biopellet renewable energy particle size

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A NEW ELECTROGENERATED POLYMER BASED ON AMINO-SUBSTITUTED N,N,N’,N’-TETRAPHENYL-P-PHENYLENEDIAMINE UNITS with DESIRED PROPERTIES

A NEW ELECTROGENERATED POLYMER BASED ON AMINO-SUBSTITUTED N,...

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40th IUPAC Congress

作者： seng ming wang Kuo Yuan Chiu and Shu-Hua Cheng* Department of Applied Chemistry National Chi Nan University Puli Nantou Hsien Taiwan 545.

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Feasibility and safety of minimally invasive multivisceral resection for T4b rectal cancer:A 9-year review

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 777-789页

作者： Kai Siang Chan Biquan Liu ming Ngan Aloysius Tan Kwang Yeong How Kar Yong Wong Department of General Surgery Tan Tock Seng HospitalSingapore 308433Singapore

BACKGROUND Colorectal cancer is the third most common cancer and the second highest cause of cancer-related mortality *** 5%-10%of patients are diagnosed with locally advanced rectal cancer(LARC)on *** LARC invading into other structures(i.e.T4b),multivisceral resection(MVR)and/or pelvic ex-enteration(PE)remains the only potential curative surgical *** and/or PE is a major and complex surgery with high post-operative *** invasive surgery(MIS)has been shown to improve short-term post-operative outcomes in other gastrointestinal malignancies,but there is little evi-dence on its use in MVR,especially so for robotic *** is a single-center retrospective cohort study from 1st January 2015 to 31st March *** criteria were patients diagnosed with cT4b rectal cancer and underwent MVR,or stage 4 disease with resectable systemic ***-tients who underwent curative MVR for locally recurrent rectal cancer,or me-tachronous rectal cancer were also *** criteria were patients with systemic metastases with non-resectable *** patients planned for elective surgery were enrolled into the standard enhanced recovery after surgery pathway with standard peri-operative management for colorectal *** sur-gery was defined based on technical difficulty of surgery(*** PE,bladder-sparing prostatectomy,pelvic lymph node dissection or need for flap creation).Our primary outcomes were the margin status,and complication ***-gorical values were described as percentages and analysed by the chi-square *** variables were expressed as median(range)and analysed by Mann-Whitney U *** overall survival(OS)and recurrence-free survival(RFS)were analysed using Kaplan-Meier estimates with life table ***-rank test was performed to determine statistical significance between cumulative *** significance was defined as P<*** estimates with li

关键词： Laparoscopy Minimally invasive surgical procedures Multivisceral resection Pelvic Exenteration Rectal neoplasms Robotic surgical procedures

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Thermo-Mechanical, Physico-Chemical, Morphological, and Fire Characteristics of Eco-Friendly Particleboard Manufactured with Phosphorylated Lignin Addition

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Journal of Renewable Materials 2024年第7期12卷 1311-1341页

作者： Apri Heri Iswanto Harisyah Manurung Asma Sohail Lee seng Hua Petar Antov Deded Sarip Nawawi Sarah Latifah Dewi Shafa Kayla Sukma Surya Kusumah Muhammad Adly Rahandi Lubis Linda MakovickáOsvaldová MohdHazwan Hussin Rangabhashiyam Selvasembian Lum Wei Chen Puji Rahmawati Nurcahyani Nam Hun Kim Widya Fatriasari Department of Forest Products Faculty of ForestryUniversitas Sumatera UtaraKampus USU Padang BulanMedanNorth Sumatra20155Indonesia Department of Chemistry Lahore College for Women UniversityLahore4444Pakistan Department of Wood Industry Faculty of Applied SciencesUniversiti Teknologi MARA(UiTM)Cawangan Pahang Kampus JengkaShah Alam26400Malaysia Faculty of Forest Industry University of ForestrySofia1797Bulgaria Department of Forest Product Faculty of Forestry and EnvironmentIPB UniversityBogor16680Indonesia Research Center for Biomass and Bioproducts National Research and Innovation Agency(BRIN)Cibinong16911Indonesia Department of Forest Engineering Faculty of Security EngineeringUniversity of ZilinaZilina01001Slovakia Materials Technology Research Group(MaTReC) School of Chemical SciencesUniversiti SainsMalaysiaMindenPenang11800Malaysia Department of Environmental Science and Engineering School of Engineering and SciencesSRM University-APAmaravatiAndhra Pradesh522240India Department of Bio and Natural Resources Faculty of Bioengineering and TechnologyUniversitiMalaysia KelantanJeliKelantan17600Malaysia Department of Forest Biomaterials Engineering College of Forest and Environmental SciencesKangwon National UniversityChuncheon24341Republic of Korea

Lignin,lignosulfonate,and synthesized phosphorylated lignosulfonate were introduced as greenﬁllers in citric acid-sucrose adhesives for bonding particleboard fabricated from areca leaf sheath(ALS).The characteristics of particleboards were compared to that of ultralow emitting formaldehyde(ULEF-UF).Theﬁllers derived from Eucalyptus ***-lignin were added forﬂame retardancy enhancement.10%of each lignin and modiﬁed lig-nin was added into the ULEF-UF and citric acid-sucrose bonded *** applied to particle-boards included thermal characteristics,X-ray diffraction analysis(XRD),morphological properties,Fourier transform infrared spectroscopy(FTIR),as well as physical,mechanical,andﬁre resistance characteristics of the laboratory-fabricated *** and modiﬁed lignin resulted in improved thermal stability of the composites bonded with ULEF-UF while the improvement in the particleboard bonded with citric acid-sucrose was not signiﬁ*** introduction ofﬁller exerted a higher inﬂuence on the UF-bonded particleboards compared to composites fabricated with citric ***,the presence of lignin,lignosulfonate,and phosphorylated lignosulfonate enhanced the mechanical strength of the ULEF-bonded particleboards,although their dimensional stability has ***,the use of lignin and lignosulfonate enhanced theﬁre resis-tance of the particleboards produced with lower observed weight *** laboratory particleboards exhibited satisfactoryﬁre resistance,attaining a V-0 rating in according to the UL-94 standard.

关键词： Modiﬁed lignin eco-friendly particleboard ﬁre and thermal properties citric acid-sucrose ultralow-emitting urea-formaldehyde resin

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ESG评级分歧对企业风险承担能力影响研究——基于资本市场投资视角

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金融理论与实践 2024年第5期 83-95页

作者：僧建芬张立杰新疆大学经济与管理学院新疆乌鲁木齐830000

当下国内外各ESG评级机构的评级结果存在分歧,其释放的信号可能影响资本市场投资者行为和企业风险承担能力。基于此,运用中国A股上市公司2009—2022年的数据样本,结合信息不对称理论考察ESG评级分歧与企业风险承担能力的关系。研究发现,... 详细信息

当下国内外各ESG评级机构的评级结果存在分歧,其释放的信号可能影响资本市场投资者行为和企业风险承担能力。基于此,运用中国A股上市公司2009—2022年的数据样本,结合信息不对称理论考察ESG评级分歧与企业风险承担能力的关系。研究发现,ESG评级分歧显著降低了企业风险承担水平,且在经过一系列内生性与稳健性检验后,基准回归结果依然成立。机制分析表明,ESG评级分歧将通过降低企业市场获利能力、加剧股价崩盘风险及投资者异质信念等三重机制降低企业风险承担能力。异质性分析表明,在市场化程度高、要素市场发育程度高的地区以及非国有企业、非重污染行业企业中,ESG评级分歧对企业风险承担能力的削弱作用更为显著。研究结论拓展了ESG评级分歧与企业行为关系研究的边界,为ESG评级体系构建提供参考意见。

关键词： ESG评级分歧企业风险承担市场收益股价崩盘风险投资者异质信念

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含V型缺口分数阶黏弹性复合材料反平面界面断裂的辛方法

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计算力学学报 2024年第4期41卷 689-695页

作者：徐成辉孙义国冷森邓子辰西北工业大学力学与土木建筑学院西安710129 西北工业大学复杂系统动力学与控制工信部重点实验室西安710129

本文提出求解含V型缺口的分数阶黏弹性复合材料反平面界面断裂问题的辛方法.分数阶Kelvin-Zener模型用于描述材料的黏弹性特征;借助Laplace变换,将时域内黏弹性反平面断裂问题的基本方程转换到频域空间;通过引入位移的对偶变量广义应力... 详细信息

本文提出求解含V型缺口的分数阶黏弹性复合材料反平面界面断裂问题的辛方法.分数阶Kelvin-Zener模型用于描述材料的黏弹性特征;借助Laplace变换,将时域内黏弹性反平面断裂问题的基本方程转换到频域空间;通过引入位移的对偶变量广义应力,建立问题的哈密顿求解体系.在该体系下,对偶方程的本征值和本征解可以利用分离变量法求解,本征解级数展开的系数通过本征解的辛共轭正交关系和外边界条件确定.这样将得到含缺口黏弹性复合材料反平面应力/应变强度因子的解析表达式.最后通过Laplace逆变换,得到时域空间内的应力/应变强度因子.数值算例验证本文方法的准确性,并揭示了分数阶参数、缺口角度和外载荷对应力/应变强度因子的影响.

关键词：辛方法分数阶黏弹性界面断裂反平面应力强度因子

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Genomics-driven derivatization of the bioactive fungal sesterterpenoid variecolin:Creation of an unnatural analogue with improved anticancer properties

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Acta Pharmaceutica Sinica B 2024年第1期14卷 421-432页

作者： Dexiu Yan Jemma Arakelyan Teng Wan Ritvik Raina Tsz Ki Chan Dohyun Ahn Vladimir Kushnarev Tsz Kiu Cheung Ho Ching Chan Inseo Choi Pui Yi Ho Feijun Hu Yujeong Kim Hill Lam Lau Ying Lo Law Chi seng Leung Chun Yin Tong Kai Kap Wong Wing Lam Yim Nikolay S.Karnaukhov Richard Y.C.Kong Maria V.Babak Yudai Matsuda Department of Chemistry City University of Hong KongHong Kong SARChina iGEM Team“VarieCure” City University of Hong KongHong Kong SARChina Department of Biomedical Engineering City University of Hong KongHong Kong SARChina Moscow Clinical Research Center Named After A.S.Loginov Moscow 111123Russian Federation

A biosynthetic gene cluster for the bioactive fungal sesterterpenoids variecolin(1)and variecolactone(2)was identified in Aspergillus aculeatus ATCC *** production of 1 and 2 was achieved in Aspergillus oryzae by expressing the sesterterpene synthase VrcA and the cytochrome P450 ***,the replacement of VrcB with homologous P450s from other fungal terpenoid pathways yielded three new variecolin analogues(5-7).Analysis of the compounds’anticancer activity in vitro and in vivo revealed that although 5 and 1 had comparable activities,5 was associated with significantly reduced toxic side effects in cancer-bearing mice,indicating its potentially broader therapeutic *** study describes the first tests of variecolin and its analogues in animals and demonstrates the utility of synthetic biology for creating molecules with improved biological activities.

关键词： Animal studies Anticancer properties Biosynthesis Natural products Sesterterpenoids Synthetic biology Terpene synthases Variecolin

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