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Current status and future trends of precision agricultural aviation technologies

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 1-17页

作者： Yubin Lan Chen Shengde bradley K Fritz College of Engineering South China Agricultural University/National Center for International Collaboration Research on Precision Agricultural Aviation Pesticides Spraying Technology(NPAAC)Guangzhou 510642China Department of Biological and Agricultural Engineering Texas A&M UniversityCollege StationTX 77845USA Texas A&M AgriLife Research and Extension Center BeaumontTX 77713USA United States Department of Agriculture(USDA) Agricultural Research Service(ARS)Aerial Application Technology Research UnitCollege StationTexas77845USA

Modern technologies and information tools can be used to maximize agricultural aviation productivity allowing for precision application of agrochemical *** paper reviews and summarizes the state-of-the-art in precision agricultural aviation technology highlighting remote sensing,aerial spraying and ground verification ***,the authors forecast the future of precision agricultural aviation technology with key development directions in precision agricultural aviation technologies,such as real-time image processing,variable-rate spraying,multi-sensor data fusion and RTK differential positioning,and other supporting technologies for UAV-based aerial *** review is expected to provide references for peers by summarizing the history and achievements,and encourage further development of precision agricultural aviation technologies.

关键词： precision agricultural aviation technology remote sensing aerial spraying UAV pesticide ground verification

Mitigation of floor heave in West Kentucky Coal Mine

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International Journal of Mining Science and Technology 2016年第3期26卷 521-525页

作者： Perry Kyle bradley Joel Unrug Kot Klimek Mark Mining Engineering Department University of Kentucky Alliance Resource Partners

A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal's location was planned for isolating that area from the Mains. A plan of support has been developed to prevent repetition of the floor heave and related problems outby the seals. The applied ground control measures were successful. An attempt of a 3D numerical modeling was made; thus, it would match the observed behavior of the mine floor and could be used as a design tool in similar conditions. The paper describes sequence of events, an applied mitigation ground control system, and the first stage of numerical modeling.

关键词： Floor heave Presplit Secondary support Modeling

Antioxidant, antibacterial and phytochemical properties of two medicinal plants against the wound infecting bacteria

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Asian Pacific Journal of Tropical Biomedicine 2017年第9期7卷 817-825页

作者： Idowu Jonas Sagbo Anthony Jide Afolayan Graeme bradley Department of Botany University of Fort HarePrivate Bag X1314Alice 5700South Africa Department of Biochemistry and Microbiology University of Fort HarePrivate Bag X1314Alice 5700South Africa

Objective: To investigate the antioxidant, antibacterial and phytochemical properties of ethanol extracts of Brachylaena elliptica and Brachylaena ilicifolia against wound infecting bacteria normally found in diabetic ***: The in vitro antioxidant activity of the two plants extracts were investigated spectrophotometrically using 1,1-diphenyl-2-picrylhydrazyl, nitric oxide, azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt, hydrogen peroxide(H_2O_2) and ferric reducing power. The antibacterial assay and minimum inhibitory concentration(MIC) was determined using the agar dilution method against five bacteria strains using amoxycillin and ciprofloxacin as positive control. The phytochemical analyses(tannins,total phenol, flavonoids, flavonols, proanthocyanidin, alkaloids and saponins) were assessed using standard ***: The ethanol extract of both plants exhibited strong antioxidant activities in some cases when compared to the standards(vitamin C and BHT). The antibacterial activity of both plants showed an appreciable broad spectrum activity against these wound pathogens with MIC value ranges between 0.3 mg/m L and 5 mg/m L. Tannins,phenols, flavanols, proanthocyanidins and alkaloids content of B. ilicifolia were significantly higher than those in B. elliptica. However, there were no significant differences in the flavanoid content of both plants ***: These results indicated that the ethanol leaf extracts of these plants have antioxidant and antibacterial activity against the tested bacteria possibly due to the presence of bioactive compounds and therefore could be used as alternative therapy against wound infection caused by these bacteria in diabetic patients.

关键词： Diabetes mellitus Antioxidant Phytochemical Brachylaena elliptica Brachylaena ilicifolia Wound

Using our mini-brains: cerebral organoids as an improved cellular model for human prion disease

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Neural Regeneration Research 2020年第6期15卷 1019-1020页

作者： bradley R.Groveman Ryan walters Cathryn L.Haigh Laboratory of Persistent Viral Diseases National Institute of Allergy and Infectious Diseases Division of Intramural ResearchRocky Mountain Laboratories National Institutes of Health

Neurodegenerative diseases are an ever-increasing burden in an aging *** no cure is available for any of these diseases and treatment is based on managing *** many candidate therapeutics demonstrating promise in animal models,none has yet shown efficacy in human *** is self-evident that humans are different from the animals used to model our diseases,especially models that have been highly manipulated to generate a disease in an animal that does not naturally have such a *** differences are likely the reason for the failures of drug candidates in human trials but,until recently,human models of neurodegenerative diseases were *** development of the human cerebral organoid model,by differentiating three-dimensional human neuronal tissue from pluripotent stem cells,represents a significant advance in studying human brain *** organoids have been used to model Alzheimer’s disease,Parkinson’s disease,Down’s syndrome dementia and we have now shown they can be infected with human prions creating a new model of human prion diseases.

关键词： cerebral likely spite

Effect of Strain Path Reversal on Austenite Grain Subdivision and Deformation Induced Ferrite Transformation Studied by Hot Torsion

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Journal of Iron and Steel Research International 2011年第S1期18卷 233-237页

作者： Muszka Krzysztof Wynne bradley P Palmiere Eric J Institute for Microstructural and Mechanical Process Engineering The University of SheffieldMappin StreetSheffield S1 3JDUK

The effects of large strain and strain path reversal on the deformation microstructure evolution in austenite below the recrystallisation temperature were studied by hot torsion using a non-transforming Fe-30wt%Ni model austenitic *** show that the high angle boundaries (HABs) can be generated by both microstructure mechanism through dislocation accumulation and texture mechanism via subgrain ***,multiple strain path reversals lead to less well-developed HABs in the original grains compared to single reversal deformed to the same amount of total accumulative *** effect is attributed to the subgrain rotation mechanism being less effective at small *** comparison,the same hot torsion tests were conducted using a microalloyed steel at a temperature between Ae 3 and Ar *** single strain path reversal,substantial deformation-induced austenite-to-ferrite phase transformation was ***,a test with multiple strain path reversals but with the same total strain produces much lower levels of strain-induced ferrite *** difference is correlated to the observations made in the Fe-30wt%Ni model *** is believed that the different amount of strain-induced ferrite originated from the different levels of strain-induced HABs within the austenite which act as ferrite nucleation sites.

关键词： strain induced transformation ultra fine ferrite dislocation boundaries EBSD

Fe_(2)Mo_(3)O_(8) nanoparticles self-assembling 3D mesoporous hollow spheres toward superior lithium storage properties

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Frontiers of Chemical Science and Engineering 2021年第1期15卷 156-163页

作者： Lifeng Zhang Yifei Song Weiping Wu Robert bradley Yue Hu Yi Liu Shouwu Guo School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China Department of Electrical and Electronic Engineering School of MathematicsComputer Science and EngineeringCityUniversity of LondonLondonEC1V 0HBUK Department of Materials University of OxfordOxfordOX13PHUK MatSurf Technology Ltd. The Old Stables Marion LodgeCumbriaCA101NWUK School of Energy Resources University of WyomingLaramieWY 82071USA School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Unique self-assembled iron(II)molybdenum(IV)oxide(Fe_(2)Mo_(3)O_(8))mesoporous hollow spheres have been facilely constructed via the bubble-template-assisted hydrothermal synthesis method combined with simple *** compact assembly of small nanoparticles on the surface of the hollow spheres not only provides more active sites for the Fe_(2)Mo_(3)O_(8),but also benefits the stability of the hollow structure,and thus improved the lithium storage properties of *** Fe_(2)Mo_(3)O_(8) mesoporous hollow spheres exhibit high initial discharge and charge capacities of 1189 and 997 mA∙h∙g^(−1) respectively,as well as good long-term cycling stability(866 mA∙h∙g^(−1) over 70 cycles)when used as a lithium-ion battery *** feasible material synthesis strategy will inspire the variation of structural design in other ternary metal molybdates.

关键词： molybdates Fe_(2)Mo_(3)O_(8) hollow spheres lithium ion batteries anodes

Cropping Pattern Modifications Change Water Resource Demands in the Beijing Metropolitan Area

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Journal of Integrative Agriculture 2012年第11期11卷 1914-1923页

作者： HUANG Jing bradley G Ridoutt XU Chang-chun ZHANGHai-lin CHEN Fu College of Agriculture and Biotechnology China Agricultural University Beijing 100193 P.R. China Commonwealth Scientific and Industrial Research Organisation (CSIRO) Sustainable Agriculture Flagship Victoria 3169 Australia

Adequate freshwater supply has become an issue of increasing local and international concern. Reducing water use in agriculture, which is the largest water using sector of the economy, is both important and urgent. The aim of this paper was to quantify how recent cropping pattern changes have influenced water resources in the great Beijing metropolitan area, an expanding megacity which also includes rural counties. Crop production affects blue water use through water consumption and water pollution, the latter assessed here using a critical dilution method. From 1990 to 2010, the total blue water used by crop production declined due to a decrease in overall cropped area, initially in response to local government policies favouring urban development. However, the average blue water use per hectare increased from 2 112 m3 ha-~ yr-~ in 1990 to 2 764 m3 ha-1 yr-1 in 2003, largely as the result of a transition from cereal to vegetable crops, and in particular an increase in intensively managed plastic and glass covered vegetable production systems. Current policies aim to conserve agricultural land, in the interests of food security, and to stimulate cereal production systems with higher ecosystem services provision. As such, in 2010 the average blue water use was 2 425 m3 ha-~ yr-l. These results demonstrate that cropping pattern changes in peri-urban regions and rural communities surrounding the Beijing metropolitan area can have a substantial impact on water resources. They also highlight the tradeoffs between food production and urban and industrial water supply and the need for integrated policy development.

关键词： blue water use water consumption water pollution cropping pattern adjustment peri-urban food production

A paradigm shift in models of oral health care:An example and a call to action

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Family Medicine and Community Health 2015年第4期3卷 32-37页

作者： bradley Christian Martin Hall Rachel Martin Oral Health North Richmond Community Health LimitedRichmondVIC 3121Australia

The consequences of oral disease are wide-ranging and can have a major impact on an indi-vidual’s and that person’s family’s quality of life.A range of factors interact to determine a person’s oral and general *** factors can be biological,social,economic,political,cultural,or environmental,in addition to knowledge,attitudes and *** models of oral health care,however,have generally ignored these factors and instead have focused on the treatment and management of existing pathology(tertiary prevention/downstream approach).This has had no effect on the rate of hospitalization or the inequitable distribution of dental *** reduce the prevalence and severity of oral diseases at the individual and population levels,holistic evidence-informed prevention-based health-promoting models of care that focus on upstream determinants of health are *** Oral Health Program at North Richmond Community Health in the state of Victoria,Australia,has developed an innovative model of oral health care based on the follow-ing principles:health promotion,disease prevention,risk-based access to care,client-and family-centered care,team-based provision of care,multidisciplinary care,and *** of this approach is currently being conducted to study the sustainability of such a model under the current public dental service funding model.

关键词： Delivery of health care health promotion oral health dental health services dentistry

FOSSIL RIDGE HIGH SCHOOL

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Journal of Green Building 2006年第1期1卷 21-32页

作者： Corky bradley Brian Dunbar Josie Plaut RB+B Architects Inc. Institute for the Built Environment Colorado State University

INTRODUCTION A typical high school in Colorado costs about$1.00 per square foot per year to *** a comparable school be designed and built that could be heated and cooled for half the typical cost?Could such a school also become an outstanding place for teaching and learning?These questions were among the significant challenges given to the design team for Poudre School District’s recently completed Fossil Ridge High School,the fifth public high school in *** article examines the major steps,features,and results that have gone into this LEED Silver Certified school.

关键词： heated Silver steps