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Paraffin section observation of flower bud differentiation of Chimonanthus praecox in Kunming and comparison of the differentiation processes in different regions,China

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Horticultural Plant Journal 2022年第2期8卷 221-229页

作者： Sijin Li Nan Yang Longqing Chen southwest engineering research center for Landscape Architecture(State Forestry and Grassland Administration) Yunnan Province Engineering Research Center for Functional Flower Resources and Industrialization TechnologySouthwest Forestry UniversityKunming 650224China

Chimonanthus praecox is an important ornamental plant and cut flower material in *** blooms in the freezing winter and its flower emits charming ***,in different region the flowering time is *** order to understand the flowering mechanism of *** in the winter,we studied the flower bud differentiation in Spring City-Kunming using paraffin sectioning method in the present *** we compared the differentiation process difference from different *** was found that the temperature is the key factor for its flower bud differentiation and blossom of *** the process of bud differentiation,the temperature 20℃was the optimum for inducing changes from vegetative axillary buds to reproductive buds and subsequent morphological differentiation in *** in the first three differentiation periods—tepal primordial stage,staminal primordial stage and pistil primordial stage,Kunming took the shortest time to finish the process due to very rapid temperature rise to 20℃,whereas,in Zhengzhou the time for these differentiations was the longest,which may be caused by the slow temperature *** May,the high temperature stress forced the flower buds into the first long dormant period in all regions except *** Kunming,the average temperature was only 20–25℃,so the flower bud continued to *** all regions,Kunming is the first to complete whole flower bud differentiation even on the early August,and started the second dormancy very early but very *** the other regions,the plants went through a shorter dormancy and the low temperature broke the dormancy *** the plants of Kunming spent a longer period for the low ***,the low temperature less than 10℃is a key factor to breaking the second *** the regular effects of temperature on flower bud differentiation and blossom is very helpful for florescence regulation of ***.

关键词： Chimonanthus praecox Flower bud differentiation Paraffin section Temperature

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Effect of different doping elements on performance of Ce-Mn/TiO_(2)catalyst for low temperature denitration

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Journal of Rare Earths 2023年第5期41卷 689-697,I0002页

作者： Lihua Huang Jian Hua Insititute of Environment and resources Southwest University of Science and TechnologyMianyang 621010China National engineering research center for Flue Gas Desulfurization Chengdu 610065China

Sm and Ho were doped in Ce-Mn/TiO_(2)catalyst respectively to enhance its denitration performance at low temperature.X-ray diffraction(XRD),N2adsorption-desorption,X-ray photoelectron spectroscopy(XPS),NH3-temperature programmed desorption(NH3-TPD),H2-temperature programmed reduction(H2-TPR)and in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS)techniques were used to analyze the structure and performance of *** results demonstrate that Ho doping increases the amount of acid sites and improves low temperature redox property of Ce-Mn/TiO_(2),which lead to excellent DeNOxperformance of Ho-Ce-Mn/TiO_(2)in the whole reaction temperature *** doping results in decline of redox property,but it is beneficial to increasing the acid sites of Ce-Mn/TiO_(2).The increased surface acid sites and moderate oxidative ability impart Sm-Ce-Mn/TiO_(2)higher denitration activity and N2selectivity at temperature above 150℃.Lewis acid sites and redox property are the main factors affecting the activity of *** of Ho and Sm both improves sulfur resistance performance of Ce-Mn/TiO_(2)by inhibiting the adsorption of SO_(2)and formation of ***-Mn/TiO_(2)modified by Ho shows better sulfur resistance than that doped with Sm because of its more surface acid sites.

关键词： Ce-Mn/TiO_(2)catalyst Doping Sm Ho Denitration performance Rareearths

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Enhancing Tea Leaf Disease Identification with Lightweight MobileNetV2

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Computers, Materials & Continua 2024年第7期80卷 679-694页

作者： Zhilin Li Yuxin Li Chunyu Yan Peng Yan Xiutong Li Mei Yu Tingchi Wen Benliang Xie College of Big Data and Information engineering Guizhou UniversityGuiyang550025China Power Semiconductor Device Reliability engineering center of the Ministry of Education Guiyang550025China State Key Laboratory of Public Big Data Guizhou UniversityGuiyang550025China The Mushroom research Centre Guizhou UniversityGuiyang550025China The engineering research center of southwest bio-pharmaceutical resources Ministry of EducationGuizhou UniversityGuiyang550025China

Diseases in tea trees can result in significant losses in both the quality and quantity of tea *** monitoring can help to prevent the occurrence of large-scale diseases in tea ***,existingmethods face challenges such as a high number of parameters and low recognition accuracy,which hinders their application in tea plantation monitoring *** paper presents a lightweight I-MobileNetV2 model for identifying diseases in tea leaves,to address these *** proposed method first embeds a Coordinate Attention(CA)module into the originalMobileNetV2 network,enabling the model to locate disease regions ***,a Multi-branch Parallel Convolution(MPC)module is employed to extract disease features across multiple scales,improving themodel’s adaptability to different disease ***,the AutoML for Model Compression(AMC)is used to compress themodel and reduce computational *** results indicate that our proposed algorithm attains an average accuracy of 96.12%on our self-built tea leaf disease dataset,surpassing the original MobileNetV2 by 1.91%.Furthermore,the number of model parameters have been reduced by 40%,making itmore suitable for practical application in tea plantation environments.

关键词： Disease identification coordinate attention mechanism multi-scale feature extraction model pruning

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Identification of a candidate QTG for seed number per silique by integrating QTL mapping and RNA-seq in Brassica napus L.

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The Crop Journal 2023年第1期11卷 189-197页

作者： Shuangshuang Xin Hongli Dong Yixin Cui Yilin Liu Guifu Tian Nanxi Deng Huafang Wan Zhi Liu Xiaorong Li Wei Qian College of Agronomy and biotechnology Southwest UniversityChongqing 400715China engineering research center of South Upland Agriculture Ministry of EducationChongqing 400715China College of pharmaceutical Sciences and Chinese Medicine Southwest UniversityChongqing 400715China

Seed number per silique(SNPS)is one of seed yield components in rapeseed,but its genetic mechanism remains *** a double haploid(DH)population derived from a hybrid between female 6Q006with 35–40 SNPS and male 6W26 with 10–15 SNPS was investigated for SNPS in the year 2017,2018,2019 and 2021,and genotyped with Brassica 60K Illumina Infinium SNP *** overlapping major QTL(qSNPS.C09)explaining 51.50%of phenotypic variance on average was narrowed to a 0.90 Mb region from 44.87 Mb to 45.77 Mb on chromosome C09 by ***,two DEGs in this interval were detected between extreme individuals in DH and F_2populations by transcriptome sequencing at7 and 14 days after pollination *** which,BnaC09g45400D encoded an adenine phosphoribosyltransferase 5(APT5)has a 48-bp InDel variation in the promoter of two *** gene association analysis showed that this InDel variation was associated with SNPS in a nature population of rapeseed,where 54 accessions carrying the same haplotype as parent 6Q006 had higher SNPS than103 accessions carrying the same haplotype as parent ***,the findings are helpful for rapeseed molecular breeding of SNPS,and provide new insight into the genetic and molecular mechanism of SNPS in rapeseed.

关键词： Adenine phosphoribosyltransferase 5 Brassica napus QTL mapping RNA-seq Seed number per silique

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Approaches to establish Q-markers for the quality standards of traditional Chinese medicines

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Acta Pharmaceutica Sinica B 2017年第4期7卷 439-446页

作者： Wenzhi Yang Yibei Zhang Wanying Wu Luqi Huang Dean Guo Changxiao Liu National engineering Laboratory for Standardization of Traditional Chinese Medicine Shanghai Institute of Materia Medica research center for Chinese Medicinal resources China Academy of Chinese Medical Sciences research center for New Drug Evaluation Tianjin Institute of Pharmaceutical Research

Traditional Chinese medicine(TCM) has played a pivotal role in maintaining the health of Chinese people and is now gaining increasing acceptance around the global scope. However, TCM is confronting more and more concerns with respect to its quality. The intrinsic "multicomponent and multitarget" feature of TCM necessitates the establishment of a unique quality and bioactivity evaluation system, which is different from that of the Western medicine. However, TCM is investigated essentially as"herbal medicine" or "natural product", and the pharmacopoeia quality monographs are actually chemicalmarkers-based, which can ensure the consistency only in the assigned chemical markers, but, to some extent, have deviated from the basic TCM theory. A concept of "quality marker"(Q-marker), following the "property-effect-component" theory, is proposed. The establishment of Q-marker integrates multidisciplinary technologies like natural products chemistry, analytical chemistry, bionics, chemometrics,pharmacology, systems biology, and pharmacodynamics, etc. Q-marker-based fingerprint and multicomponent determination conduce to the construction of more scientific quality control system of *** review delineates the background, definition, and properties of Q-marker, and the associated technologies applied for its establishment. Strategies and approaches for establishing Q-marker-based TCM quality control system are presented and highlighted with a few TCM examples.

关键词： Traditional Chinese medicine Q-marker Quality control Property-effect-component

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Innovative dual-mode device integrating capacitive desalination and solar vapor generation for high-efficiency seawater desalination

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Journal of Energy Chemistry 2025年第1期 171-179页

作者： Jiacheng Wang Zhaoyu Chen Ruduan Yuan Jiaxin Luo Ben Zhang Keju Ji Meng Li Juanxiu Xiao Kuan Sun National Innovation center for Industry-Education Integration of Energy Storage Technology MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCollege of Energy & Power Engineering Chongqing University Xuefeng Mountain Energy Equipment Safety National Observation and research Station CQU-NUS Renewable Energy Materials & Devices Joint Laboratory Chongqing University southwest Technology and engineering research Institute Jiangsu Provincial Key Laboratory of bionic Functional Materials College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics State Key Laboratory of Marine resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University

Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater ***,due to the influence of latent heat and condensation efficiency,the water yield from solar-driven interface evaporation remains insufficient,posing a significant challenge that requires *** this work,we designed a dual-mode high-flux seawater desalination device that combines solar-driven interface evaporation and capacitive *** utilizing coupled desalination materials exhibiting both photothermal conversion and capacitance activity,the device demonstrated photothermal evaporation rates of 1.41 and 0.97 kg m-2h-1for condensate water yield under one-sun ***,the device exhibited a salt adsorption capacity of up to48 mg g-1and a salt adsorption rate of 2.1 mg *** addition,the salt adsorption capacity increased by approximately 32% under one-sun ***,photo-enhanced capacitive desalination performance was explored through numerical simulations and theoretical *** calculations and characterizations confirmed that the defect energy levels formed by the introduction of sulfur vacancies can effectively widen the light absorption range,improve photothermal conversion performance,and stimulate more photoelectrons to participate in capacitive ***,the electron distribution state of molybdenum disulfide with sulfur vacancies and surface defect sites contributes to ion/electron transport at the solid-liquid *** work provides a novel pathway for integrating solar vapor generation with other low-energy desalination technologies.

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Advanced Functional Electromagnetic Shielding Materials:A Review Based on Micro‑Nano Structure Interface Control of biomass Cell Walls

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Nano-Micro Letters 2025年第1期17卷 98-134页

作者： Yang Shi Mingjun Wu Shengbo Ge Jianzhang Li Anoud Saud Alshammari Jing Luo Mohammed A.Amin Hua Qiu Jinxuan Jiang Yazeed M.Asiri Runzhou Huang Hua Hou Zeinhom M.El‑Bahy Zhanhu Guo Chong Jia Kaimeng Xu Xiangmeng Chen Co‑Innovation center of Efficient Processing and Utilization of Forest resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037People’s Republic of China State Key Laboratory of Efficient Production of Forest Resourced Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083People’s Republic of China Department of Physics Faculty of Sciences‑ArarNorthern Border UniversityArar 91431Saudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of Materials Science and engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr CityCairo 11884Egypt Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products International Joint Research Center for Biomass MaterialsSouthwest Forestry UniversityKunming 650224People’s Republic of China School of Science Henan Agricultural UniversityZhengzhou 450002People’s Republic of China

research efforts on electromagnetic interference(EMI)shielding materials have begun to converge on green and sustainable biomass *** materials offer numerous advantages such as being lightweight,porous,and *** to their porous nature,interfacial compatibility,and electrical conductivity,biomass materials hold significant potential as EMI shielding *** concerted efforts on the EMI shielding of biomass materials have been reported,this research area is still relatively new compared to traditional EMI shielding *** particular,a more comprehensive study and summary of the factors influencing biomass EMI shielding materials including the pore structure adjustment,preparation process,and micro-control would be *** preparation methods and characteristics of wood,bamboo,cellulose and lignin in EMI shielding field are critically discussed in this paper,and similar biomass EMI materials are summarized and *** composite methods and fillers of various biomass materials were *** paper also highlights the mechanism of EMI shielding as well as existing prospects and challenges for development trends in this field.

关键词： biomass materials Electromagnetic interference shielding Micro-nano structure interface control Conductivity

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Water level fluctuations influence microbial communities and mercury methylation in soils in the Three Gorges Reservoir,China

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Journal of Environmental Sciences 2018年第6期30卷 206-217页

作者： Yuping Xiang Yongmin Wang Cheng Zhang Hong Shen Dingyong Wang College of resources and Environment Southwest University Chongqing 400715 China Chongqing engineering research center for Agricultural Non-point Source Pollution Control in the Three Gorges Reservoir Area Chongqing 400715 China Chongqing Key Laboratory of agricultural resources and Environment Chongqing 400715 China

Reservoirs tend to have enhanced methylmercury（MeHg） concentrations compared to natural lakes and rivers, and water level fluctuations can promote MeHg production. Until now, little research has been conducted on the effects of microorganisms in soils for the formation of MeHg during different drying and flooding alternating conditions in the Three Gorges Reservoir（TGR）. This study aimed to understand how water level fluctuations affect soil microbial composition and mercury concentrations, and if such microbial variations are related to Hg methylation. The results showed that MeHg concentrations and the ratios of MeHg to THg（MeHg%） in soils were higher in the seasonally drying and flooding alternating areas（DFAs, 175–155 m） than those in the non-inundated（NIAs, 〉 175 m） and inundated areas（IAs, 〈 145 m）. However, MeHg% in all samples was less than 1%, indicating that the Hg methylation activity in the soils of the TGR was under a low level. 454 highthroughput sequencing of 16 S rRNA gene amplicons showed that soil bacterial abundance and diversity were relatively higher in DFA compared to those in NIA and IA, and microbial community composition varied in these three areas. At the family level, those groups in Deltaproteobacteria and Methanomicrobia that might have many Hg methylators were also showed a higher relative abundance in DFA, which might be the reason for the higher MeHg production in these areas. Overall, our results suggested that seasonally water level fluctuations can enhance the microbial abundance and diversity, as well as MeHg production in the TGR.

关键词： Water level fluctuation zone Three Gorges Reservoir Soil Microbial communities Methylmercury Methylators

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Taxonomic and multi-gene phylogenetic studies of Tubeufiales

Taxonomic and multi-gene phylogenetic studies of Tubeufiales

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中国菌物学会第七届全国会员代表大会暨2017年学术年会

作者： Yong-Zhong Lu Ji-Chuan Kang engineering and research center for southwest bio-pharmaceutical resources of National Education Ministry of China Guizhou University School of pharmaceutical engineering Guizhou Institute of Technology

The Tubeufiales order belong to Dothideomycetes class and consist of one single family and23 genera. They are widespread in tropical and temperate regions. These fungi are saprobic and commonly on decaying woody substrate from terrestrial and aquatic habitats, which have the potential to produce bioactive secondary metabolites. The sexual morph of Tubeufiales are characterized by superficial ascomata, a pseudoparaphysate hamathecium, bitunicate asci, multi-septate, hyaline to pale brown cylindrical ascospores, while the asexual morph are hyphomycetous with mostly helicosporous species and a few chlamydosporous and phragmosporous ones. There are several problems in the taxonomy of Tubeufiales: 1) some species are confusing and wrongly identified which need to be resolved;2) as useful molecular data in fungal taxonomy, protein coding genes data need to be added to Tubeufiales group;3) there are five genera, Acanthophiobolus, Bifrontia, Kamalomyces,Podonectria and Thaxteriella have never been sequenced;4) helicosporous members are morphologically similar group so that these genera are difficult to differentiate, most of previous identifications were identified to Helicoma, Helicomyces and Helicosporium based on only morphological features but lack of molecular data, thus, many of them might be wrongly named, even at the genus level. In order to solve these problems, more than 200 specimens were collected from southern China and Thailand in this study. Based on ITS, LSU, RPB2 and TEF1α multi-gene phylogenetic analyses and morphology, we identified 2 new genera, 48 new species and 17 new records. Four wrong identifications were corrected. Furthermore, we found many helicosporous species that do not belong to Helicoma, Helicomyces or Helicosporium. In Tubeufiaceae family,helicosporous anamorph presented in Acanthohelicosporium, Chlamydotubeufia, Helicangiospora,Helicoma, Helicomyces, Helicosporium, Neocanthostigma, Neohelicomyces, Neohelicosporium,Thaxteriellopsis and Tub

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A study of the biodiversity and secondary metabolites of fungal endophytes from medicinal plants in Guizhou

A study of the biodiversity and secondary metabolites of fun...

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中国菌物学会2018年学术年会

作者： Ji-Chuan Kang Ting-Chi Wen Yi-Xin Qian Si-Xuan Zhou Xiao-Ya Ma engineering and research center of southwest bio-pharmaceutical resources Ministry of EducationGuizohu University School of Pharmacy Guizhou University

In southwest China, Guizhou province has a well-known fame for its prolific biodiversity of medicinal plants. For solving the problems of plant shortage, environmental disruption and obtaining novel structural as well as bio-active natural products, we have been studying the fungal endophytes and their secondary metabolites from medicinal plants in Guizhou province for a number of years. We isolated over five thousand fungal strains from medicinal plants including Artemisia carvifolia, Artemisia japonica, Blumea balsamifera, Camptotheca acuminate, Dendrobium orchids, Ginkgo biloba, Nothapodytes pittosporoides, Reineckia carnea, Taxus *** even hundreds of different fungal isolates were obtained from each plant species. Most of the fungal endophytes belong to Ascomycota which mainly distribute in Pezizomycete, Dothediomycete and Sordariomycete.A few of them are classified into basidiomycota and Zygomycota. The status of fungal endophyte taxa depends on vary kinds of factors, for example, the age of host, organ, humidity of sample site, altitude, season, surrounding plant, extent of environmental contamination and so on. We combined in vitro bio-activity analysis, chemical composition identification and gene detection in fungal endophyte to screen and evaluate 1003 fungal ***-six of them showed anti-inflammatory, antitumor, antioxidant, anti-pathogen and P-gp inhibitory bio-activity to different extent. At present, we accomplished the study for secondary metabolites of ten fungal strains that possess high bio-activity. More than 200 bio-active compounds were isolated. Ten of them have new ***, there is a long way to produce bio-active compounds in large scale because of the low ***, it is necessary to improve cultivation methods or alter inner gene in fungal endophyte by genetic engineering for achieving novel chemical structure as potential new drug.

关键词： Fungal endophytes morphology phylogeny bio-active compounds P-gp inhibitory

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