检索结果-南通市图书馆

Estimation of Rice Aboveground Biomass by UAV Imagery with Photosynthetic Accumulation Models

在线全文

学校读者我要写书评

暂无评论

Plant Phenomics 2023年第3期5卷 418-434页

作者： Kaili Yang Jiacai Mo Shanjun Luo Yi Peng Shenghui Fang Xianting Wu Renshan Zhu Yuanjin Li Ningge Yuan Cong Zhou Yan Gong School of Remote Sensing and Information Engineering Wuhan UniversityWuhanChina Lab for Remote Sensing of Crop Phenotyping Wuhan UniversityWuhanChina College of Life Sciences Wuhan UniversityWuhanChina

The effective and accurate aboveground Biomass(AGB)estimation facilitates evaluating crop growth and site-specific crop management.Considering that rice accumulates AGB mainly through green leaf photosynthesis,we proposed the photosynthetic accumulation model(PAM)and its simplified version and compared them for estimating AGB.These methods estimate the AGB of various rice cultivars throughout the growing season by integrating vegetation index(Ⅵ)and canopy height based on images acquired by unmanned aerial vehicles(UAV).The results indicated that the correlation of Ⅵ and AGB was weak for the whole growing season of rice and the accuracy of the height model was also limited for the whole growing season.In comparison with the NDVI-based rice AGB estimation model in 2019 data(R^(2)=0.03,RMSE=603.33 g/m^(2))and canopy height(R^(2)=0.79,RMSE=283.33 g/m^(2)),the PAM calculated by NDVI and canopy height could provide a better estimate of AGB of rice(R^(2)=0.95,RMSE=136.81 g/m^(2)).Then,based on the time-series analysis of the accumulative model,a simplified photosynthetic accumulation model(SPAM)was proposed that only needs limited observations to achieve R^(2) above 0.8.The PAM and SPAM models built by using 2 years of samples successfully predicted the third year of samples and also demonstrated the robustness and generalization ability of the models.In conclusion,these methods can be easily and efficiently applied to the UAV estimation of rice AGB over the entire growing season,which has great potential to serve for large-scale field management and also for breeding.

关键词： Biomass cultivar season

Enzymatic preparation of hydrophobic Biomass with one-pot synthesis and the oil removal performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2023年第2期124卷 105-116页

作者： Dan Peng Wenjie Li Xujun Liang Liuchun Zheng Xuetao Guo Department of Transportation and Environment Shenzhen Institute of Information TechnologyShenzhen 518172China School of Earth and Environment Anhui University of Science&TechnologyHuainan 232001China School of Resources and Environmental Science Quanzhou Normal UniversityQuanzhou 362000China Department of Civil and Environmental Engineering University of MichiganAnn ArborMI 481092125USA School of Environment South China Normal UniversityGuangzhou Higher Education Mega CenterGuangzhou 510006China College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China

Oil pollution is causing deleterious damage to aquatic ecosystems and human health.The utilization of agricultural waste such as corn stalk(CS)to produce biosorbents has been considered an ecofriendly and efficient approach for removing oil.However,most previous studies focused on the modification of the whole CS,which is inefficient due to the heterogeneity of CS.In this study,corn stalk pith(CP),which has excellent amphipathic characteristics,was selected to prepare a high-efficiency oil sorbent by grafting dodecyl gallate(DG,a long-chain alkyl)onto CP surface lignin via laccase mediation.The modified Biomass(DGCP)shows high hydrophobicity(water contact angle=140.2°)and superoleophilicity(oil contact angle=0°)and exhibits a high oil sorption capacity(46.43 g/g).In addition,DGCP has good stability and reusability for adsorbing oil from the aqueous phase.Kinetic and isotherm models and two-dimensional correlation spectroscopy integrated with FTIR analyses revealed that the main sorption mechanism involves the H-bond effect,hydrophobic effect and van der Waals force.This work provides an ecofriendly method to prepare oil sorbents and new insights into the mechanisms underlying the removal of spilled oil from wastewater.

关键词： Biomass Enzymatic modification Hydrophobicity Oil sorption Two-dimensional correlation spectroscopy

A review on co-pyrolysis of agriculture Biomass and disposable medical face mask waste for green fuel production:recent advances and thermo-kinetic models

在线全文

学校读者我要写书评

暂无评论

化学科学与工程前沿:英文版 2023年第9期17卷 1141-1161页

作者： Melvin X.J.Wee Bridgid L.F.Chin Agus Saptoro Chung L.Yiin Jiuan J.Chew Jaka Sunarso Suzana Yusup Abhishek Sharma Department of Chemical and Energy Engineering Faculty of Engineering and ScienceCurtin University MalaysiaCDT 250Miri 98009Malaysia Energy and Environment Research Cluster Faculty of Engineering and ScienceCurtin University MalaysiaCDT 250Miri 98009Malaysia Department of Chemical Engineering and Energy Sustainability Faculty of EngineeringUniversiti Malaysia Sarawak(UNIMAS)Kota Samarahan 94300Malaysia Institute of Sustainable and Renewable Energy(ISuRE) Universiti Malaysia Sarawak(UNIMAS)Kota Samarahan 94300Malaysia Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyKuching 93350Malaysia Generation Unit(Fuel Technology&Combustion) Tenaga Nasional Berhad(TNB)Research Sdn BhdKajang 43000Malaysia Department of Chemical Engineering Manipal University JaipurJaipur 303007India Chemical&Environmental Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3000Australia

The Association of Southeast Asian Nations is blessed with agricultural resources,and with the growing population,it will continue to prosper,which follows the abundance of agricultural Biomass.Lignocellulosic Biomass attracted researchers’interest in extracting bio-oil from these wastes.However,the resulting bio-oil has low heating values and undesirable physical properties.Hence,co-pyrolysis with plastic or polymer wastes is adopted to improve the yield and quality of the bio-oil.Furthermore,with the spread of the novel coronavirus,the surge of single-use plastic waste such as disposable medical face mask,can potentially set back the previous plastic waste reduction measures.Therefore,studies of existing technologies and techniques are referred in exploring the potential of disposable medical face mask waste as a candidate for co-pyrolysis with Biomass.Process parameters,utilisation of catalysts and technologies are key factors in improving and optimising the process to achieve commercial standard of liquid fuel.Catalytic copyrolysis involves a series of complex mechanisms,which cannot be explained using simple iso-conversional models.Hence,advanced conversional models are introduced,followed by the evolutionary models and predictive models,which can solve the non-linear catalytic copyrolysis reaction kinetics.The outlook and challenges for the topic are discussed in detail.

关键词： Biomass COVID-19 wast catalyst pyrolysis kinetics

Accelerated alkalinity regulation and long-term dry-wet aging durability for bauxite residue remediated with Biomass pyrolysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2022年第1期34卷 220-228页

作者： Zhexiang He Jingju Zhou Jianwei Tang Chuxuan Li Jun Jiang Wei Chen Feng Zhu Shengguo Xue School of Metallurgy and Environment Central South UniversityChangsha 410083China School of Ecology and Environment Zhengzhou UniversityZhengzhou 450001China

Biomass fermentation provides a potential route toward the ecological disposal for the bauxite residue(BR)with high alkalinity issues.However,how to accelerate the remediation of the alkaline problem with a long-term durability is still a big challenge.Herein,we investigated the acceleration of the decomposition of straw toward organic acid species via a pyrolysis strategy as well as the pH stability during long-term dry-wet aging for the treated BR.The pH of pyrolytic BR at 300℃ is stabilized at around 8.90 after 70 days’dry-wet aging.During the aging,the main Ca-contained alkaline minerals of calcite and cancrinite are dissolved and the content of exchangeable Na+is reduced.This pyrolysis process can decompose straw quickly and produce more organic matters that are easily degraded to fulvic and humic acid as evidenced by 3D fluorescence spectrum analysis.Compared to the fermentation with straw under natural conditions,the alkalinity regulation of BR after pyrolysis is featured with shorter period and lower pH as well as long-term pH stability.Therefore,the synergistic pyrolysis of BR with straw provides an alternative method to address the alkaline issues,which is conducive to promoting the soil formation of BR.

关键词： Bauxite residue Biomass Neutralization Soil formation Dry-wet aging

Enzymatic and chemo-enzymatic strategies to produce highly valuable chiral amines from Biomass with ω-transaminases on 2D zeolites

在线全文

学校读者我要写书评

暂无评论

National Science Review 2022年第9期9卷 10-18页

作者： J.Miguel Carceller Karen S.Arias Maria J.Climent Sara Iborra Avelino Corma Instituto de Tecnologia Química (UPV-CSIC) Universitat Politècnica de València

Amino transaminases(ATAs) have been supported on a 2D ITQ-2 zeolite through electrostatic interactions, resulting in a highly stable active biocatalyst to obtain a variety of valuable chiral amines starting from prochiral ketones derived from Biomass. We have extended the biocatalyst applications by designing a chemo-enzymatic process that allows, as the first step, prochiral ketones to be obtained from Biomass-derived compounds through an aldol condensation–reduction step using a bifunctional metal/base catalyst. The prochiral ketone is subsequently converted into the chiral amine using the immobilized ATA. We show that it is feasible to couple both steps in a semi-continuous process to produce industrially relevant chiral amines with yields of >95% and ～100% enantiomer excess.

关键词： amino transaminase ITQ-2 zeolite chemo-enzymatic process Biomass semi-continuous process Pd/MgO

The Dof transcription factor COG1 acts as a key regulator of plant Biomass by promoting photosynthesis and starch accumulation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2023年第11期16卷 1759-1772页

作者： Zhuoyun Wei Haoyong Zhang Meng Fang Shuyuan Lin Mingsong Zhu Yuxiu Li Limin Jiang Tianliang Cui Yanwei Cui Hong Kui Liang Peng Xiaoping Gou Jia Li Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou UniversityLanzhou 730000China Gansu Key Laboratory of Gene Editing for Breeding School of Life SciencesLanzhou UniversityLanzhou 730000China Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution School of Life SciencesLanzhou UniversityLanzhou 730000China Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design School of Life SciencesGuangzhou UniversityGuangzhou 510006China

Photosynthetic efficiency is the primary determinant of crop yield,including vegetative Biomass and grain yield.Manipulation of key transcription factors known to directly control photosynthetic machinery can be an effective strategy to improve photosynthetic traits.In this study,we identified an Arabidopsis gain-of-function mutant,cogwheel1-3D,that shows a significantly enlarged rosette and increased Biomass compared with wild-type plants.Overexpression of COG1,a Dof transcription factor,recapitulated the phenotype of cogwheel1-3D,whereas knocking out COG1 and its six paralogs resulted in a reduced rosette size and decreased Biomass.Transcriptomic and quantitative reverse transcription polymerase chain reaction analyses demonstrated that COG1 and its paralogs were required for light-induced expression of genes involved in photosynthesis.Further chromatin immunoprecipitation and electrophoretic mobility shift assays indicated that COG1 can directly bind to the promoter regions of multiple genes encoding light-harvesting antenna proteins.Physiological,biochemical,and microscopy analyses revealed that COG1 enhances photosynthetic capacity and starch accumulation in Arabidopsis rosette leaves.Furthermore,combined results of bioinformatic,genetic,and molecular experiments suggested that the functions of COG1 in increasing Biomass are conserved in different plant species.These results collectively demonstrated that COG1 acts as a key regulator of plant Biomass by promoting photosynthesis and starch accumulation.Manipulating COG1 to optimize photosynthetic capacity would create new strategies for future crop yield improvement.

关键词： COG1 Dof transcription factor LHCA LHCB photosynthetic genes Biomass

Mulberry Biomass-Derived Nanomedicines Mitigate Colitis through Improved Inflamed Mucosa Accumulation and Intestinal Microenvironment Modulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2024年第1期6卷 791-807页

作者： Wenjing Yang Ya Ma Haiting Xu Zhenhua Zhu Jiaxue Wu Cheng Xu Wei Sun Erhu Zhao Min Wang Rui L.Reis Subhas C.Kundu Xiaoxiao Shi Bo Xiao State Key Laboratory of Silkworm Genome Biology College of SericultureTextileand Biomass SciencesSouthwest UniversityChongqing 400715China Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing Faculty of Materials and EnergySouthwest UniversityChongqing 400715China Department of Gastroenterology The First Affiliated Hospital of Nanchang UniversityNanchang 330006China Bs Research Group I3Bs—Research Institute on BiomaterialsBiodegradables and BiomimeticsUniversity of MinhoHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineAveParkBarco 4805-017GuimaraesPortugal ICVS/3B’s-PT Government Associate Laboratory BragaGuimarãesPortugal

The therapeutic outcomes of conventional oral medications against ulcerative colitis(UC)are restricted by inefficient drug delivery to the colitis mucosa and weak capacity to modulate the inflammatory microenvironment.Herein,a fluorinated pluronic(FP127)was synthesized and employed to functionalize the surface of mulberry leaf-derived nanoparticles(MLNs)loading with resveratrol nanocrystals(RNs).The obtained FP127@RN-MLNs possessed exosome-like morphologies,desirable particle sizes(around 171.4 nm),and negatively charged surfaces(−14.8 mV).The introduction of FP127 to RN-MLNs greatly improved their stability in the colon and promoted their mucus infiltration and mucosal penetration capacities due to the unique fluorine effect.

关键词： fluorine sizes Biomass

Synthesis of hierarchically porous carbon materials by zinc salts-assisted carbonization of Biomass and organic solid wastes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2024年第1期84卷 45-52页

作者： Le-Le Zhang Lei Tong Yanwei Ding Wanqun Zhang Hai-Wei Liang Hefei National Research Center for Physical Sciences at the Microscale Department of ChemistryUniversity of Science and Technology of ChinaHefei230026China

Hierarchically porous carbons(HPCs)with multimodal pores have attracted considerable attention due to their unique physical and chemical properties and various application potentials in heterogeneous catalysis,environmental treatment,and energy storage and conversion.Herein,we report a general and simple zinc salts-assisted method for the synthesis of HPCs with varied porosity and chemical func-tionalities by the direct carbonization of diverse Biomass and wastes.During the carbonization,zinc salts are thermally decomposed into nanoparticles that serve as in-situ templates to introduce nanopores in carbons.The prepared HPCs exhibit high specific surface areas(up to 2432 m2 g-1),large pore volumes(up to 4.30 cm^(3)g^(-1)),and broad pore size distributions.Moreover,the zinc salts can be recovered and recycled,supporting the sustainable production of HPCs on large scale.The prepared HPCs-supported catalysts with atomically dispersed metal sites exhibit promising electrocatalytic performance for the oxygen reduction reaction.

关键词： Hierarchical porous carbon Zinc salts Biomass Wastes Electrocatalysis

A Low Cost, Green Sustainable and Biodegradable Biomass-based Fluorine-free Water and Oil Repellent

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第4期42卷 480-491页

作者： Zhi-Wei Shen Shu-Feng Hu Chen Zeng Wei-Qing Kong Mei-Fang Zhu State Key Laboratory for Modification of Chemical Fibers&Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China State Key Laboratory of Pulp and Paper Engineering School of Light Industry and EngineeringSouth China University of TechnologyGuangzhou510630China

With the global ban on plastics intensifying, the substitution of plastic with paper has garnered increasing attention. However, the inadequate water and oil repellency of pulp molding hinders its practical applications. Currently, the common method to enhance the oil and water repellency of pulp molding is by adding fluorinated water and oil repellents. Nevertheless, fluorinated compounds are environmentally and physiologically harmful. Therefore, the development of fluorine-free, water and oil repellent alternatives is crucial. In this study, chitosan and stearic acid were utilized as the first and second layers of the oil and water repellent coatings, respectively. The coated samples exhibited favorable water repellency, with a water contact angle of 116.4°, and excellent oil repellency, achieving a 12/12 rating on the kit scale. Importantly, the samples did not exhibit any leakage after being soaked in hot water and hot oil at 95±5℃ for 30 min, demonstrating remarkable performance as a barrier against hot water and oil. Moreover, the coated samples displayed outstanding mechanical properties, thermal stability, biodegradability, and recyclability. The approach presented in this study is simple, cost-effective, environmentally friendly, and represents a promising technique for producing fluoride-free, oil-and water-resistant pulp molding products.

关键词： Biomass Fluoride-free Oil-andwater-resistant Plasticfree