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A data directory to facilitate investigations on worldwide wildlife trafficking

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Big Earth Data 2023年第2期7卷 338-348页

作者： Meredith L.Gore Rowan Hilend Jonathan OPrell Emily Griffin John R.macdonald Burcu B.Keskin Aaron Ferber Bistra Dilkina Department of Geographical Sciences University of MarylandCollege ParkUSA Department of Supply Chain Management Michigan State UniversityEast LansingUSA Department of Information Sciences Statisticsand Management ScienceUniversity of AlabamaTuscaloosaUSA Operations and Information Management Division Babson CollegeWellesleyUSA Supply Chain Management Department of ManagementColorado State UniversityFort CollinsUSA Verterbi School of Engineering University of Southern CaliforniaLos AngelesUSA

Wildlife trafficking is a global phenomenon posing many negative impacts on socio-environmental *** exploration of wildlife trafficking trends and the impact of interventions is significantly encumbered by a suite of data reuse *** describe a novel,open-access data directory on wildlife trafficking and a corresponding visualization tool that can be used to identify data for multiple purposes,such as exploring wildlife trafficking hotspots and convergence points with other crime,discovering key drivers or deterrents of wildlife trafficking,and uncovering structural *** searches,expert elicitation,and peer-reviewed publications were used to search for extant sources used by industry and non-profit organizations,as well as those leveraged to publish academic research *** open-access data directory is designed to be a living document and searchable according to multiple *** directory can be instrumental in the data-driven analysis of unsustainable illegal wildlife trade,supply chain structure via link prediction models,the value of demand and supply reduction initiatives via multi-item knapsack problems,or trafficking behavior and transportation choices via network interdiction problems.

关键词： Illegal wildlife trade supply chain operations management interdiction conservation

Plantain-based diet modulates atrazine-induced testicular toxicities in rats

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Asian pacific Journal of Reproduction 2023年第4期12卷 170-181页

作者： Damilare Emmanuel Rotimi Oluyomi stephen Adeyemi SDG 03 Group-Good Health&Well-being Landmark UniversityOmu-Aran 251101Kwara StateNigeria Department of Biochemistry Medicinal BiochemistryNanomedicine&Toxicology LaboratoryLandmark UniversityPMB 1001Omu-Aran-251101Nigeria Laboratory of Sustainable Animal Environment Graduate School of Agricultural ScienceTohoku University232-3 YomogidaNaruko-onsenOsakiMiyagi989-6711Japan

Objective:To assess the potential of plantain-based diet in modulating testicular toxicities in rats exposed to ***:The plantain-based diet at 50%,25% and 12.5% were prepared from the basal diet by substituting the corn starch with plantain fruit pulp flour at different *** rats were fed plantain-based diet in varying concentrations ranging from 12.5% to 50% of the basal diet for 21 days before or after atrazine treatment in a two-phase experiment:preventive and therapeutic *** therapeutic model(n=35)had seven groups with 5 rats each,including the control,atrazine,atrazine recovery,atrazine plus plantain-based diet 50%,25%,12.5%,and atrazine plus quercetin *** preventive model(n=30)had six groups of 5 rats,consisting of the control,atrazine,50%,25%,12.5% plantain-based diet plus atrazine,and quercetin plus atrazine *** hormones(testosterone,luteinizing hormone and follicle-stimulating hormone),sperm parameters(sperm motility,viability,morphology and concentration),and testicular function indices(protein,cholesterol,glycogen,acid phosphatase,alkaline phosphatase and lactate dehydrogenase)were ***:The gonadal hormones,sperm characteristics,and testicular function indices of the rat testis decreased significantly in the atrazine group alongside degeneration of the ***,plantain-based diet restored the gonadal hormone concentrations,semen parameters,and testicular function indices in both the preventive and therapeutic ***:Treatment with plantain-based diet protects against rat testicular toxicity caused by atrazine via the modulation of gonadal hormones,sperm quality,testicular function index as well as histoarchitecture of rat testes.

关键词： Plantain Atrazine Endocrine disruptor Environmental toxicants Medicinal biochemistry Testicular toxicity

Lesion-symptom mapping with NIHSS sub-scores in ischemic stroke patients

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Stroke & Vascular Neurology 2022年第2期7卷 124-131页

作者： Deepthi Rajashekar Matthias Wilms M Ethan macdonald Serena Schimert Michael D Hill Andrew Demchuk Mayank Goyal Sean P Dukelow Nils Daniel Forkert Biomedical Engineering Graduate Program Hotchkiss Brain InstituteUniversity of CalgaryCalgaryAlbertaCanada Department of Radiology Cumming School of MedicineUniversity of CalgaryCalgaryAlbertaCanada Hotchkiss Brain Institute University of CalgaryCalgaryAlbertaCanada Department of Clinical Neurosciences University of CalgaryCalgaryAlbertaCanada Department of Electrical and Computer Engineering University of CalgaryCalgaryAlbertaCanada Department of Community Health Sciences Cumming School of MedicineUniversity of CalgaryCalgaryAlbertaCanada Department of Medicine Cumming School of MedicineUniversity of CalgaryCalgaryAlbertaCanada Alberta Children's Hospital Research Institute University of CalgaryCalgaryABCanada

Background Lesion-symptom mapping(LSM)is a statistical technique to investigate the population-specific relationship between structural integrity and post-stroke clinical *** clinical practice,patients are commonly evaluated using the National Institutes of Health Stroke Scale(NIHSS),an 11-domain clinical score to quantitate neurological deficits due to *** far,LSM studies have mostly used the total NIHSS score for analysis,which might not uncover subtle structure–function relationships associated with the specific sub-domains of the NIHSS ***,the aim of this work was to investigate the feasibility to perform LSM analyses with sub-score information to reveal category-specific structure–function relationships that a total score may not *** Employing a multivariate technique,LSM analyses were conducted using a sample of 180 patients with NIHSS assessment at 48-hour post-stroke from the ESCAPE *** NIHSS domains were grouped into six categories using two *** was conducted for each category of the two groupings and the total NIHSS *** Sub-score LSMs not only identify most of the brain regions that are identified as critical by the total NIHSS score but also reveal additional brain regions critical to each function category of the NIHSS assessment without requiring extensive,specialised *** These findings show that widely available sub-scores of clinical outcome assessments can be used to investigate more specific structure–function relationships,which may improve predictive modelling of stroke outcomes in the context of modern clinical stroke assessments and neuroimaging.

关键词： patients score category

Droplet-based bioprinting enables the fabrication of cell–hydrogel–microfibre composite tissue precursors

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Bio-Design and Manufacturing 2022年第3期5卷 512-528页

作者： Marcin Kotlarz Ana M.Ferreira Piergiorgio Gentile stephen J.Russell Kenneth Dalgarno School of Engineering Newcastle UniversityNewcastle upon Tyne NE17RUUK School of Design University of LeedsLeeds LS29JTUK

Composites offer the option of coupling the individual benefits of their constituents to achieve unique material properties,which can be of extra value in many tissue engineering *** combining hydrogelswith fibre-based scaffolds can create tissue constructs with enhanced biological and structural ***,developing efficient and scalable approaches to manufacture such composites is ***,we use a droplet-based bioprinting system called reactive jet impingement(ReJI)to integrate a cell-laden hydrogel with a microfibrous *** system uses microvalves connected to different bioink reservoirs and directed to continuously jet bioink droplets at one another in mid-air,where the droplets react and form a hydrogel that lands on a microfibrous ***–hydrogel–fibre composites are produced by embedding human dermal fibroblasts at two different concentrations(5×10^(6) and 30×10^(6) cells/mL)in a collagen–alginate–fibrin hydrogel matrix and bioprinted onto a fibre-based *** results show that both types of cell–hydrogel–microfibre composite maintain high cell viability and promote cell–cell and cell–biomaterial *** lower fibroblast density triggers cell proliferation,whereas the higher fibroblast density facilitates faster cellular organisation and infiltration into the ***,the fibrous component of the composite is characterised by high swelling properties and the quick release of calcium *** data indicate that the created composite constructs offer an efficient way to create highly functional tissue precursors for laminar tissue engineering,particularly for wound healing and skin tissue engineering applications.

关键词： Bioprinting Hydrogel–fibre composites High-cell-density hydrogels Composite manufacturing

LIGHT PORTABLE ELECTROPNEUMATIC LOUDSPEAKER

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Chinese Journal of Acoustics 1989年第4期8卷 359-365页

作者： macdonald D.L. Racal Acoustics Ltd.U.K

This paper analyses the influence of certain parameters and factors on the characteristics of the electropneumatic loudspeaker and describes the experimental work carried out. The developed portable electropneumatic loudspeaker possesses good properties with a flat frequency response from 400 Hz to 2 kHz and a maximum sound pressrue output of 120dB at a distance 2 metre on axis from the horn mouth .The magnetic flux density at the magnetic gap is 19 ,000 gauss .The electropneumatic loudspeaker is small in size and lightweight.

关键词： LIGHT PORTABLE ELECTROPNEUMATIC LOUDSPEAKER

Review on solar sail technology

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Astrodynamics 2019年第2期3卷 93-125页

作者： Shengping Gong Malcolm macdonald School of Aerospace Engineering Tsinghua UniversityBeijing100084China Department of Mechanical&Aerospace Engineering University of StrathclydeGlasgouScotland

This paper reviews solar sail trajectory design and dynamics,attitude control,and structural *** the area of orbital dynamics,methods relevant to transfer trajectory design and non-Keplerian orbit generation are *** the area of attitude control,di erent control strategies,including utilisation of solar radiation pressure and conventional actuators,are ***,the methods of modelling structural dynamics during and after deployment are discussed,before considering possible future trends in developing of solar sailing missions.

关键词： solar sail orbit attitude structure

Modeling, simulation, and prediction of global energy indices: a differential approach

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Frontiers in Energy 2022年第2期16卷 375-392页

作者： stephen Ndubuisi NNAMCHI Onyinyechi Adanma NNAMCHI Janice Desire BUSINGYE Maxwell Azubuike IJOMAH Philip Ikechi OBASI Department of Mechanical Engineering Kampala International University20000 KampalaUganda Department of Agricultural Engineering and Bio Resources Michael Okpara University of AgricultureUmudikeUmuahiaNigeria Directorate of Human Resource/Finance Kampala International University20000 KampalaUganda Department of Mathematics and Statistics Faculty of SciencesUniversity of Port HarcourtPMB 5323 Choba Port HarcourtNigeria Department of Macroeconomic Analysis(Ministry of Finance) Budget and National PlanningAbujaNigeria

Modeling, simulation, and prediction of global energy indices remain veritable tools for econometric, engineering, analysis, and prediction of energy indices. Thus, this paper differentially modeled, simulated, and non-differentially predicated the global energy indices. The state-of-the-art of the research includes normalization of energy indices, generation of differential rate terms, and regression of rate terms against energy indices to generate coefficients and unexplained terms. On imposition of initial conditions, the solution to the system of linear differential equations was realized in a Matlab environment. There was a strong agreement between the simulated and the field data. The exact solutions are ideal for interpolative prediction of historic data. Furthermore, the simulated data were upgraded for extrapolative prediction of energy indices by introducing an innovative model, which is the synergy of deflated and inflated prediction factors. The innovative model yielded a trendy prediction data for energy consumption, gross domestic product, carbon dioxide emission and human development index. However, the oil price was untrendy, which could be attributed to odd circumstances. Moreover, the sensitivity of the differential rate terms was instrumental in discovering the overwhelming effect of independent indices on the dependent index. Clearly, this paper has accomplished interpolative and extrapolative prediction of energy indices and equally recommends for further investigation of the untrendy nature of oil price.

关键词： energy indices differential model normalization simulation inflation deflation predictive factor and prediction rate

Electrochemical measurements used for assessment of corrosion and protection of metallic materials in the field:A critical review

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Journal of Materials Science & Technology 2022年第17期112卷 151-183页

作者： Da-Hai Xia Cheng-Man Deng Digby macdonald Sina Jamali Douglas Mills Jing-Li Luo Michael G.Strebl Mehdi Amiri Weixian Jin Shizhe Song Wenbin Hu Tianjin Key Laboratory of Composite and Functional Materials Tianjin 300350China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China Department of Nuclear Engineering University of California at BerkeleyBerkeleyCA 94720USA School of Chemistry The University of New South WalesSydneyNSW 2052Australia School of Science and Technology University of NorthamptonSt.George’s AvenueNorthamptonNN26JDUK Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada Department of Materials Science(LKO WW-4)University of Erlangen-Nuremberg91058 ErlangenGermany Department of Mechanical Engineering George Mason UniversityFairfaxVirginia 22030USA Zhoushan Marine Corrosion Institute of Central Research Institute of Iron and Steel Zhoushan316003China

Corrosion degradation is detrimental to metal structures as it shortens their lifetime and leads to huge economic losses and unexpected ***,the detection and monitoring of corrosion degradation is of great ***,we briefly review the state-of-the-art electrochemical methods,instrumentation(based on virtual instrumentation),and advanced sensor/probes that are used in the field for the assessment of corrosion *** corrosion monitoring results,some of which have been obtained at Tianjin University in the past 30 years,for metallic materials and organic coating/metal systems in atmospheric,marine,and soil conditions in the field are *** methods,data analysis,and theoretical and mathematical models regarding each corrosion system are discussed,and the challenges,problems and possible solutions for each case are ***,future developments,such as wireless,intelligent,and automatic electrochemical measurement,that will augment the present electrochemical methods of evaluating corrosion degradation are summarized.

关键词： Corrosion monitoring Electrochemical method Virtual instrumentation Sensor Data analysis In-situ measurement Probe

Deep learning for exploring ultra-thin ferroelectrics with highly improved sensitivity of piezoresponse force microscopy

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npj Computational Materials 2023年第1期9卷 2066-2073页

作者： Panithan Sriboriboon Huimin Qiao Owoong Kwon Rama K.Vasudevan stephen Jesse Yunseok Kim School of Advanced Materials and Engineering Sungkyunkwan University(SKKU)SuwonRepublic of Korea Research Center for Advanced Materials Technology Core Research InstituteSuwonRepublic of Korea Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTNUSA

Hafnium oxide-based ferroelectrics have been extensively studied because of their existing ferroelectricity,even in ultra-thin film ***,studying the weak response from ultra-thin film requires improved measurement *** general,resonance-enhanced piezoresponse force microscopy(PFM)has been used to characterize ferroelectricity by fitting a simple harmonic oscillation model with the resonance ***,an iterative approach,such as traditional least squares(LS)fitting,is sensitive to noise and can result in the misunderstanding of weak *** this study,we developed the deep neural network(DNN)hybrid with deep denoising autoencoder(DDA)and principal component analysis(PCA)to extract resonance *** DDA/PCA-DNN improves the PFM sensitivity down to 0.3 pm,allowing measurement of weak piezoresponse with low excitation voltage in 10-nm-thick Hf_(0.5)Zr_(0.5)O_(2) thin *** hybrid approaches could provide more chances to explore the low piezoresponse of the ultra-thin ferroelectrics and could be applied to other microscopic techniques.

关键词： spectrum ferroelectric excitation