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Adoption of technologies that enhance soil carbon sequestration in East Africa. What influence farmers' decision?

International Soil and Water Conservation Research 2020年第1期8卷 90-101页

作者： Stanley Karanja Ng'ang'a Dorcas Anyango jalang'o Evan Hartunian Girvetz International Centre for Tropical Agriculture(CIAT) National Agricultural Research Laboratories-KawandaP.O.Box 6247KampalaUganda International Centre for Tropical Agriculture(CIAT) P.O.Box 823-00621NairobiKenya

The last two decades have seen a rise of interest in the adoption and diffusion of agricultural technologies aimed at improving the sustainability of agricultural lands among smallholder farmers in developing *** papers set out to understand factors that influence the adoption of technologies that enhance soil carbon sequestration among smallholder farmers,using secondary data recorded in the World Overview of Conservation Approaches and Technologies(WOCAT)database from 45 to 50 smallholders'farmers in selected places in Kenya and Ethiopia respectively.A Probit model was used to analyse whether socio-economic,institutional,off-farm income,technical know-how,farmers'percep-tions,and land use characteristics influences the adoption of technologies that enhance soil carbon *** results show that smallholder farmers that positively perceived net benefits of the soil carbon enhancing technologies were more likely to adopt such technologies that enhance soil carbon sequestration in both *** to off-farm income and land ownership with title deeds were also found to be positively associated with ***-farm income positively influences adoption among farmer with a moderate income(100-500US$per year)but not the rich(>500US$)*** to high level of skills and technical know-how required for implementing and maintaining a technology on the farm had a negative influence on *** shows that interventions,aimed at addressing specific factors such as inadequate skills and knowledge,change in perception among farmers,and off-farm income are likely to have the greatest impact in decisions relating to the adoption of the soil carbon enhancing practices among farmers in East Africa.

关键词： Factors Influencing The adoption Soil carbon Sequestration East Africa

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A Critical Examination to the Unitarized Ij ＝ 20 ππ Scattering Chiral Amplitude

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Communications in Theoretical Physics 2001年第11期36卷 563-568页

作者： ang Qin XIAO Zhi-Guang ZHENG Han-Qing SONG Xing-Chang Department of Physics Peking UniversityBeijing 100871China Department of PhysicsPeking UniversityBeijing 100871China Department of PhysicsPeking UniversityBeijing 100871China Department of PhysicsPeking UniversityBeijing 100871China

We discuss the Padé approximation to the ππ scattering amplitudes in one-loop chiral perturbation *** approximation restores unitarity and can reproduce the correct resonance poles,but the approximation violates crossing symmetry and produces spurious poles on the complex s plane and therefore plagues its predictions in some *** we find that one virtual state in the Ij = 20 channel may have physical relevance.

关键词： ππ scattering,Padé approximation,chiral perturbation theory

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Insight into microbial synthesis of metal nanomaterials and their environmental applications:Exploration for enhanced controllable synthesis

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Chinese Chemical Letters 2024年第11期35卷 6-15页

作者： Yuqing Liu Yu Yang Yuhan E Changlong Pang Di Cui ang Li State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Zhixing Daohe(j.angxi)Environmental Protection Industry Technology Research Institute Co. Ltd.Nanchang 330000China Engineering Research Center for Medicine College of PharmacyHarbin University of CommerceHarbin 150076China

Microbial fabrication of metal nanoparticles(MNPs)has received significant attention due to the advantages of low toxicity,energy efficiency and ecological *** groups of MNPs can be synthesized intracellularly or extracellularly by various wild-type microorganisms,including bacteria,fungi,algae and *** biology approaches,represented by genetic engineering,have been applied to overcome the shortcomings in productivity,stability,and controllability of biosynthetic *** electron microscope(SEM),transmission electron microscope(TEM)and other characterization techniques assist in deciphering their unique *** addition,biosynthetic MNPs have been widely explored for the utilization in environmental remediation and contaminant *** machine learning contains a great potential for designing targeted MNPs and predicting their *** review provides a comprehensive overview of the research progress in the microbial synthesis of *** outlook on the current challenges and future prospects in the biologically controllable synthesis and engineering environmental applications of MNPs is also provided in this review.

关键词： Microbial synthesis Metal nanoparticles Controllable synthesis Synthetic biology Environmental applications

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Cumulative unsupervised multi-domain adaptation for Holstein cattle re-identification

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Artificial Intelligence in Agriculture 2023年第4期10卷 46-60页

作者： Fabian Dubourvieux Guillaume Lapouge angélique Loesch Bertrand Luvison Romaric Audigier UniversitéParis-Saclay CEA ListPalaiseau 91120France LITIS INSA RouenNormandie UniversitéSaint-Etienne-du-Rouvray 76801France

In dairy farming,ensuring the health of each cow and minimizing economic losses requires individual monitoring,achieved through cow Re-Identification(Re-ID).Computer vision-based Re-ID relies on visually dis-tinguishing features,such as the distinctive coat patterns of breeds like ***,annotating every cow in each farm is *** objective is to develop Re-ID methods applicable to both labeled and unlabeled farms,accommodating new individuals and diverse ***-supervised Domain Adaptation(UDA)techniques bridge this gap,transferring knowledge from labeled source domains to unlabeled target domains,but have only been mainly designed for pedestrian and vehicle Re-ID *** work introduces Cumulative Unsupervised Multi-Domain Adaptation(CUMDA)to address challenges of lim-ited identity diversity and diverse farm *** accumulates knowledge from all domains,enhanc-ing specialization in known domains and improving generalization to unseen *** contributions include a CUMDA method adapting to multiple unlabeled target domains while preserving source domain performance,along with extensive cross-dataset experiments on three cattle Re-ID *** experiments demonstrate significant enhancements in source preservation,target domain specialization,and generalization to unseen domains.

关键词： Re-identification Domain adaptation Holstein cattle Unsupervised learning Monitoring

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Lightweight and high-security laser-based cotton tip pruning robot

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International journal of Agricultural and Biological Engineering 2024年第4期17卷 98-108页

作者： Xuan'ang Guo Ziyang Mao Zedong Shi Wei Lu School of Artificial Intelligence Nanjing Agricultural UniversityNanjing 210031China

Considering the current environmental pollution caused by chemical topping,plant damage caused by mechanical topping,and the high cost of manual topping,a laser-based cotton-tip pruning robot for field cotton was designed in this *** main advantages of this robot include its safety,light weight,low cost,and environmental ***,the structural design,measurement,and corresponding control system design of the robot were ***,a precise laser control method based on Yolov5 cotton top identification and the inverse kinematic solution of parallel robot rapid positioning were ***,the optimal laser irradiation wavelength and duration were ***,a laser-topping experiment was conducted,and the overall accuracy and recall rates for cotton identification were 98.3%and 99.3%,*** AP and mAP at the threshold value of 0.5 reached 99.3%and 78.8%,*** maximum positioning error of the jacking system is 2.6 mm,and the repeated positioning error is within±1.2 cm,which meets the accuracy requirements of laser ***-purple laser irradiation at 15 W and 405 nm for 22 s was the best topping *** the effects of cotton topping with and without manual topping,it can be seen that laser topping significantly improved the yield and *** with the photothermal response of the cotton topping,the feasibility of laser topping was verified both theoretically and *** laser-topping scheme proposed in this study exhibits high efficiency,environmental protection,and safety,as well as good application prospects.

关键词： laser topping parallel manipulator photothermal response object detection

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Isolated right coronary artery bypass grafting via minimally invasive approach in two elderly patients with failed percutaneous coronary intervention

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journal of Geriatric Cardiology 2022年第7期19卷 555-558页

作者： An Shing ang Ilias Skaltsiotis Theodore Kofidis Hee Hwa Ho Department of Cardiology Tan Tock Seng HospitalSingapore Department of Cardiac Thoracic and Vascular SurgeryNational University HospitalNational University Health SystemSingapore

Coronary artery bypass grafting(CABG)tra-ditionally involves revascularization of the left anterior descending artery(LAD)as it is usually of greater prognostic value.[1]Isolated CABG for non-LAD lesions have also been descri-bed in ***,these were often in the setting of re-do CABG[2,3]or in patients with isol-ated right sided coronary lesion and concomitant valvular heart disease.

关键词： coronary bypass patients

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Boosting thermoelectrics by alloying Cu_(2)Se in SnTe-CdTe compounds

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journal of Materials Science & Technology 2021年第30期89卷 45-51页

作者： Zhiyu Chen juan Li jing Tang Fujie Zhang Yan Zhong Hangtian Liu Ran ang Key Laboratory of Radiation Physics and Technology Ministry of EducationInstitute of Nuclear Science and TechnologySichuan UniversityChengdu610064China Interdisciplinary Materials Research Center School of Materials Science and EngineeringTongji UniversityShanghai201804China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu610065Chin

The discovery of band convergence has opened an effective avenue for significantly enhancing thermoelectric performance of SnTe,while alloying CdTe in SnTe is evidenced efficient for improving the valley ***,the thermoelectric transport properties are limited due to the low solubility of CdTe in SnTe(~3%).Inspired by the improvement of dimensionless figure of merit zT in Cu or Se-doped SnTe,investigating the effect of Cu_(2)Se on the electronic and phonon transport properties of SnTe-CdTe alloys is highly ***,improving the quality factor can trigger an increase of the potential of a compound for higher zT,which is of importance for design of thermoelectric ***,alloyed 3%Cu_(2)Se in SnTe-3%CdTe system enables an increased peak zT,which is attributed by the optimization of electronic performance(~21μW cm^(-1)K^(-2)at 800 K),as well as the decreased lattice thermal conductivity owing to the enhanced mass and strain *** importantly,alloying Cu_(2)Se not only improves the quality factor from~0.25 to~0.45,resulting in a higher maximum potential zT,but also effectively preserves the Fermi energy in a relative optimized *** current findings demonstrate the role of Cu_(2)Se for manipulating thermoelectrics in SnTe.

关键词： SnTe Thermoelectrics Quality factor Fermi level

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Effects of estrogen receptor modulators on cytoskeletal proteins in the central nervous system

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Neural Regeneration Research 2017年第8期12卷 1231-1240页

作者： julia j.Segura-Uribe Rodolfo Pinto-Almazán angélica Coyoy-Salgado Claudia E.Fuentes-Venado Christian Guerra-Araiza Unidad de Investigacion Modica en Enfermedades Neurologicas Hospital de Especialidades Centro Medico Nacional Siglo XXI Instituto Mexicano del Seguro Social Mexico City Mexico Seccion de Estudios de Posgrado e Investigacion Escuela Superior de Medicina Instituto Politecnico Nacional Mexico City Mexico Unidad de Investigacion Hospital Regional de Alta Especialidad Ixtapaluca Ixtapaluca Mexico Institute for the Developing Mind Children's Hospital Los Angeles Los Angeles CA USA Department of Pediatrics Keck School of Medicine University of Southern California Los Angeles CA USA Consejo Nacional de Ciencia y Tecnologia Mexico City Mexico Clinica de Trastornos del Sueno Universidad Autonoma Metropolitana-Iztapalapa Mexico City Mexico Servicio de Medicina Fisica y Rehabilitacion Hospital General de Zona No. 197 Texcoco Mexico Unidad de Investigacion Modica en Farmacologla Hospital de Especialidades Centro Medico Nacional Siglo XXI Instituto Mexicano del Seguro Social Mexico City Mexico

Estrogen receptor modulators are compounds of interest because of their estrogenic agonistic/antagonistic effects and tissue specificity. These compounds have many clinical applications, particularly for breast cancer treatment and osteoporosis in postmenopausal women, as well as for the treatment of climacteric symptoms. Similar to estrogens, neuroprotective effects of estrogen receptor modulators have been described in different models. However, the mechanisms of action of these compounds in the central nervous system have not been fully described. We conducted a systematic search to investigate the effects of estrogen receptor modulators in the central nervous system, focusing on the modulation of cytoskeletal proteins. We found that raloxifene, tamoxifen, and tibolone modulate some cytoskeletal proteins such as tau, microtuble-associated protein 1（MAP1）, MAP2, neurofilament 38（NF38） by different mechanisms of action and at different levels： neuronal microfilaments, intermediate filaments, and microtubule-associated proteins. Finally, we emphasize the importance of the study of these compounds in the treatment of neurodegenerative diseases since they present the benefits of estrogens without their side effects.

关键词： estrogen receptor modulators selective estrogen receptor modulators microtubules neurofilaments tibolone tamoxifen raloxifene

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Insights into plastic deformation mechanisms of austenitic steels by coupling generalized stacking fault energy and semi-discrete variational Peierls-Nabarro model

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Progress in Natural Science:Materials International 2023年第1期33卷 83-91页

作者： Yu Liu jinglian Du Shunli Shang ang Zhang Shoumei Xiong Zi-Kui Liu Feng Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical University Department of Materials Science and Engineering The Pennsylvania State University University Park College of Materials Science and Engineering Chongqing University School of Materials Science and Engineering Tsinghua University Analytical & Testing Center Northwestern Polytechnical University

The generalized stacking fault energy(GSFE) is a key parameter to determine the plastic deformation mechanisms of austenitic steels. However, the underlying physics why the GSFE can affect the plastic deformation behaviors remains unclear. In this paper, the plastic deformation mechanisms of austenitic steels with different carbon(C)additions were investigated by coupling the GSFE with the semi-discrete variational Peierls-Nabarro(P–N) *** internal mechanisms behind the P–N stress and plastic deformation were explained at atomic scale. It is found that the positions and contents of C atoms affect the GSFE of austenite, and thus regulate plastic deformation behaviors of austenitic steels by influencing dislocation core structure. As exemplified that with 4 at.%C in austenite, the intrinsic stacking fault energy increases from-433 to-264 mj/m2, and the stacking fault width increases to 6.62b from 4.72b of FCC-Fe with b being the Burgers vector. This corresponds to the plastic deformation mechanism dominated by the ε martensitic transformation with the lattice changing from FCC to *** increasing C contents to 8 at.%, the intrinsic stacking fault energy of austenite increases to-9.01 mj/m2,while the stacking fault width decreases to 6.03b. The plastic deformation tends to proceed via the mechanical twinning mode. The present investigation establishes a solid foundation for clarifying the plastic deformation mechanisms of austenitic steels from the perspective of the dislocation core structure.

关键词： Austenite Plastic deformation mechanisms Dislocation core structure Generalized stacking fault energy Peierls-Nabarro model

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Convergence Rates of Tail Probabilities for Sums under Dependence Assumptions

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Acta Mathematica Sinica,English Series 2010年第8期26卷 1591-1600页

作者： Xiao Rong Yang Wei Dong LIU Ke ang FU Lin Xin ZHang School of Statistics and Mathematics Zhejiang Gongshang University Hangzhou 310018 P. R. China Department of Mathematics Zhejiang University Hangzhou 310027 P. R. China School of Statistics and Mathematics Zhejiang Gongshang University Han qzhou 310018 P. R. China

Let {X,X1,X2,……}be a zero mean strictly stationary Ф-mixing sequence. Set Sn=∑n k=1 and f（x^p）=∑∞n=1 n^r-2P（｜Sn｜≥x^p√ES2nlog n）,When ε〉（√2）1/p,for p〉1/2 and r〉1,the conditions for ∫∞ε f（x^p）dx 〈∞ to hold is established, by using coupled methods together withstrong approximation, which are different from the traditional symmetrization and Hoffman-jФrgensen inequality.

关键词： Complete convergence mixing sequences strong approximation

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