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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 14-17页

作者： matthew j.COMEAU Rafael RIGAUD johanna PLETT Michael BECKEN Alexey KUVSHINOV Department of Geoscience&Engineering Delft University of Technology The Netherlands Institute of Geophysics ETHZürichSwitzerland Institut für Geophysik Universität MünsterGermany

In order to attain good quality transfer function estimates from magnetotelluric field data(i.e.,smooth behavior and small uncertainties across all frequencies),we compare time series data processing with and without a multitaper approach for spectral *** are several common ways to increase the reliability of the Fourier spectral estimation from experimental(noisy)data;for example to subdivide the experimental time series into segments,taper these segments(using single taper),perform the Fourier transform of the individual segments,and average the resulting spectra.

关键词： magnetotellurics electrical resistivity time series processing Fourier analysis multitaper

FTC of hidden Markov process with application to resource allocation in air operation

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journal of Systems Engineering and Electronics 2011年第1期22卷 12-21页

作者： Neng Eva Wu matthew Charies Ruschmann Department of Electrical and Computer Engineering Binghamton UniversityState University of New York

This paper investigates the feedback control of hidden Markov process（HMP） in the face of loss of some observation *** control action facilitates or impedes some particular transitions from an inferred current state in the attempt to maximize the probability that the HMP is driven to a desirable absorbing *** control problem is motivated by the need for judicious resource allocation to win an air operation involving two opposing *** effectiveness of a receding horizon control scheme based on the inferred discrete state is *** to loss of sensors that help determine the state of the air operation is achieved through a decentralized scheme that estimates a continuous state from measurements of linear models with additive *** discrete state of the HMP is identified using three well-known detection *** sub-optimal control policy based on the detected state is implemented on-line in a closed-loop,where the air operation is simulated as a stochastic process with SimEvents,and the measurement process is simulated for a range of single sensor loss rates.

关键词： hidden Markov process(HMP) decentralization information fusion fault tolerant estimation air operation receding horizon control(RHC).

Dairy manure as a potential source of crop nutrients and environmental contaminants

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journal of Environmental Sciences 2021年第2期33卷 117-130页

作者： Danika Hill matthew j.Morra Thibault Stalder Sven jechalke Eva Top Anne T.Pollard Inna Popova Department of Soil&water Systems University of IdahoID 83844-2340USA Department of Biology University of IdahoID 83844-3051USA justus Liebig University Giessen Institute for Phytopathology35392 GieJenGermany

Although animal manure is applied to agricultural fields for its nutrient value,it may also contain potential *** determine the variability in such contaminants as well as in valuable nutrients,nine uncomposted manure samples from Idaho dairies collected during 2.5 years were analyzed for macro-and micro-nutrients,hormones,phytoestrogens,antibiotics,veterinary drugs,antibiotic resistance genes,and genetic elements involved in the spread of antibiotic *** N ranged from 6.8 to 30.7(C:N of 10 to 21),P from 2.4 to 9.0,and K from 10.2 to 47.7 g/kg ***(103-348 mg/kg)was more abundant than Cu(56-127 mg/kg)in all *** were the most prevalent contaminants detected,with concentrations fluctuating over time,reflecting animal *** is the first study to document the presence of flunixin,a non-steroidal anti-inflammatory drug,in solid stacked manure from regular dairy *** was the most frequently detected *** and sulfonamides were regularly *** also investigated the relative abundance of several types of plasmids involved in the spread of antibiotic resistance in clinical *** belonging to the Inc I,Inc P,and Inc Q1 incompatibility groups were found in almost all manure *** Q1 plasmids,class 1 integrons,and sulfonamide resistance genes were the most widespread and abundant genetic element surveyed,emphasizing their potential role in the spread of antibiotic *** benefits associated with amending agricultural soils with dairy manure must be carefully weighed against the potential negative consequences of any manure contaminants.

关键词： Manure Antibiotics Hormones Veterinary drugs Emerging contaminants

Effects of low-oxygen conditions on embryo growth in the painted turtle,Chrysemys picta

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Integrative Zoology 2017年第2期12卷 148-156页

作者： Gerardo A.CORDERO matthew L.KARNATZ jon C.SVENDSEN Eric j.GANGLOFF Department of Ecology Evolutionand Organismal BiologyIowa State UniversityAmesIowaUSA Technical University of Denmark National Institute of Aquatic ResourcesFreshwater FisheriesSilkeborgDenmark Interdisciplinary Centre of Marine and Environmental Research University of PortoPortoPortugal

Low-oxygen conditions(hypoxia;<21%O_(2))are considered unfavorable for growth;yet,embryos of many vertebrate taxa develop successfully in hypoxic subterranean *** enhanced tolerance to hypoxia has been demonstrated in adult reptiles,such as in the painted turtle(Chrysemys picta),its effects on sensitive embryo life stages warrant *** tested the hypothesis that short-term hypoxia negatively affects growth during day 40 of development in ***,when O_(2) demands are highest in embryos.A brief,but severe,hypoxic event(5%O_(2) for 0.5 h)moderately affected embryo growth,causing a 13%reduction in mass(relative to a normoxic control).The same condition had no effect during day 27;instead,a nearly anoxic event(1%O_(2) for 72 h)caused a 5%mass *** embryos survived the egg incubation *** study supports the assumption that reptilian embryos are resilient to intermittently low O_(2) in subterranean *** work is needed to ascertain responses to suboptimal O_(2) levels while undergoing dynamic changes in developmental physiology.

关键词： embryo metabolism embryo respiration growth rate nest environment oxygen consumption rate

Combinatorial therapies for spinal cord injury repair

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Neural Regeneration Research 2025年第5期20卷 1293-1308页

作者： Carla S.Sousa Andreia Monteiro António j.Salgado Nuno A.Silva Life and Health Sciences Research Institute(ICVS) School of MedicineUniversity of MinhoCampus de Gualtar-gualtarBragaPortugal ICVS/3B’s Associate Lab PT Government Associated LabCampus de Gualtar-gualtarBragaPortugal

Spinal cord injuries have profound detrimental effects on individuals, regardless of whether they are caused by trauma or non-traumatic events. The compromised regeneration of the spinal cord is primarily attributed to damaged neurons, inhibitory molecules, dysfunctional immune response, and glial scarring. Unfortunately, currently, there are no effective treatments available that can fully repair the spinal cord and improve functional outcomes. Nevertheless, numerous pre-clinical approaches have been studied for spinal cord injury recovery, including using biomaterials, cells, drugs, or technological-based strategies. Combinatorial treatments, which target various aspects of spinal cord injury pathophysiology, have been extensively tested in the last decade. These approaches aim to synergistically enhance repair processes by addressing various obstacles faced during spinal cord regeneration. Thus, this review intends to provide scientists and clinicians with an overview of pre-clinical combinatorial approaches that have been developed toward the solution of spinal cord regeneration as well as update the current knowledge about spinal cord injury pathophysiology with an emphasis on the current clinical management.

关键词： electric stimulation neural tissue regeneration neuroprotection polytherapy spinal cord injury

Oxidative stress and male reproductive health

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Asian journal of Andrology 2014年第1期16卷 31-38页

作者： Robert j Aitken Tegan B Smith matthew S jobling Mark A Baker Geoffry N De Iuliis Priority Research Centre in Reproductive Science Discipline of Biological Sciences Faculty of Science and IT University of Newcastle Callaghan NSW 2308 Australia

One of the major causes of defective sperm function is oxidative stress, which not only disrupts the integrity of sperm DNA but also limits the fertilizing potential of these cells as a result of collateral damage to proteins and lipids in the sperm plasma membrane. The origins of such oxidative stress appear to involve the sperm mitochondria, which have a tendency to generate high leve｜s of superoxide anion as a prelude to entering the intrinsic apoptotic cascade. Unfortunately, these cells have very little capacity to respond to such an attack because they only possess the first enzyme in the base excision repair （BER） pathway, 8-oxoguanine glycosylase 1 （OGG1）. The latter successfully creates an abasic site, but the spermatozoa cannot process the oxidative lesion further because they lack the downstream proteins （APE1, XRCC1） needed to complete the repair process. It is the responsibility of the oocyte to continue the BER pathway prior to initiation of S-phase of the first mitotic division. If a mistake is made by the oocyte at this stage of development, a mutation will be created that will be represented in every cell in the body. Such mechanisms may explain the increase in childhood cancers and other diseases observed in the offspring of males who have suffered oxidative stress in their germ line as a consequence of age, environmental or lifestyle factors. The high prevalence of oxidative DNA damage in the spermatozoa of male infertility patients may have implications for the health of children conceived in vitro and serves as a driver for current research into the origins of free radical generation in the germ line.

关键词： DNA damage oxidative stress oxoguanine glycosylase 1 oocyte spermatozoa

Real-Time Hybrid Simulation of Seismically Isolated Structures with Full-Scale Bearings and Large Computational Models

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Computer Modeling in Engineering & Sciences 2019年第9期120卷 693-717页

作者： Alireza Sarebanha Andreas H.Schellenberg matthew j.Schoettler Gilberto Mosqueda Stephen A.Mahin Arup 900 Wilshire BoulevardLos Angeles90017USA Maffei Structural Engineering 98 Battery StSan Francisco94111USA Department of Civil and Environmental Engineering UC BerkeleyRichmond94804USA Department of Structural Engineering UC San DiegoLa Jolla92093USA

Hybrid simulation can be a cost effective approach for dynamic testing of structural components at full scale while capturing the system level response through interactions with a numerical *** dynamic response of a seismically isolated structure depends on the combined characteristics of the ground motion,bearings,and ***,dynamic full-scale system level tests of isolated structures under realistic dynamic loading conditions are desirable towards a holistic validation of this earthquake protection ***,bearing properties and their ultimate behavior have been shown to be highly dependent on rate-of-loading and scale size effects,especially under extreme loading *** laboratory facilities can test full-scale seismic isolation bearings under prescribed displacement and/or loading *** adaptation of a full-scale bearing test machine for the implementation of real-time hybrid simulation is presented here with a focus on the challenges encountered in attaining reliable simulation results for large scale dynamic *** advanced real-time hybrid simulations of large and complex hybrid models with several thousands of degrees of freedom are some of the first to use high performance parallel computing to rapidly execute the numerical *** in the experimental setup included measured forces contaminated by delay and other systematic control errors in applying desired *** and inertial forces generated by the large-scale loading apparatus can affect the accuracy of measured force *** results from real-time hybrid simulation requires implementation of compensation algorithms and correction of these various sources of ***,this research program confirms that real-time hybrid simulation is a viable testing method to experimentally assess the behavior of full-scale isolators while capturing interactions with the numerical models of the superstructure to evaluate

关键词： Real-time hybrid simulation seismic isolation parallel processing full scale bearing experimental testing

Ground-based hyperspectral remote sensing for weed management in crop production

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International journal of Agricultural and Biological Engineering 2016年第2期9卷 98-109页

作者： Yanbo Huang matthew A.Lee Steven j.Thomson Krishna N.Reddy United States Department of Agriculture Agricultural Research ServiceCrop Production Systems Research UnitPO Box 350Stoneville MS 38776USA Department of Electrical and Computer Engineering Mississippi State UniversityMississippi State MS 39762USA United States Department of Agriculture National Institute of Food and AgricultureWashington DC 20024USA

Agricultural remote sensing has been developed and applied in monitoring soil,crop growth,weed infestation,insects,diseases and water status in farm fields to provide data and information to guide agricultural management *** agriculture has been implemented through prescription mapping of crop fields at different scales with the data remotely sensed from space-borne,airborne and ground-based ***-based remote sensing techniques offer portability,flexibility and controllability in applications for precision *** weed management,crop injury from off-target herbicide spray drift and herbicide resistance in weeds are two important *** precision weed management,ground-based hyperspectral remote sensing techniques were developed for detection of crop injury from dicamba and differentiation between glyphosate resistant and sensitive *** research presents the techniques for ground-based hyperspectral remote sensing for these two *** illustrate the advantages of ground-based hyperspectral remote sensing for precision weed management.

关键词： ground-based remote sensing hyperspectral crop injury herbicide resistance precision agriculture

The role of latitudinal, genetic and temperature variation in the induction of diapause of Papilio glaucus （Lepidoptera： Papilionidae）

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Insect Science 2018年第2期25卷 328-336页

作者： Sean F. Ryan Patti Valella Gabrielle Thivierge matthew L. Aardema j. Mark Scriber Department of Biological Sciences University of Notre Dame Notre Dame Indiana USA USDA-ARS Center for Medical Agricultural and Veterinary Entomology 1600/1700 Southwest 23rd Drive Gainesville Florida USA Department of Entomology Michigan State University East Lansing Michigan USA Life Science Department Long Beach City College Long Beach California USA Sackler Institute for Comparative Genomics American Museum of Natural History New York New York USA McGuire Centerfor Lepidoptera and Diversity University of Florida Gainesville Florida US

A key adaptation in insects for dealing with variable environmental conditions is the ability to diapause. The tiger swallowtail butterflies, Papilio glaucus and P. canadensis are ideal species to explore the genetic causes and population genetic consequences of diapause because divergence in this trait is believed to be a salient factor in maintaining a hybrid zone between these species. Yet little is known about the factors that influence diapause induction in this system. Here we explored how spatial （latitudinal）, environmental （temperature） and genetic （hybridization） factors affect diapause induction in this system. Specifically, a series of growth chamber experiments using wild caught individuals from across the eastern United States were performed to：（1） evaluate how critical photoperiod varies with latitude, （2） isolate the stage in which induction occurs, （3） test whether changes in temperature affected rates of diapause induction, and （4） explore how the incidence of diapause is affected in hybrid offspring. We find that induction occurs in the larval stage, is not sensitive to a relatively broad range of temperatures, appears to have a complex genetic basis （i.e., is not simply a dominant trait following a Mendelian inheritance pattern） and that the critical photoperiod increases by 0.4 h with each increasing degree in latitude. This work deepens our understanding of how spatial, environmental and genetic variation influences a key seasonal adaptation （diapause induction） in a well-developed ecological model system and will make possible future studies that explore how climatic variation affects the population dynamics and genetics of this system.

关键词： adaptation critical photoperiod development diapauses facultative hybridization

An alternative approach for sustainable sheep meat production:implications for food security

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journal of Animal Science and Biotechnology 2021年第2期12卷 791-805页

作者： Eric N.Ponnampalam matthew I.Knight Peter j.Moate joe L.jacobs Animal Production Sciences Agriculture Victoria ResearchDepartment of JobsPrecincts and RegionsBundooraVIC 3083Australia Animal Production Sciences Agriculture Victoria ResearchDepartment of JobsPrecincts and RegionsHamiltonVIC 3300Australia Animal Production Sciences Agriculture Victoria ResearchDepartment of JobsPrecincts and RegionsEllinbankVictoria 3821Australia Centre for Agricultural Innovation School of Agriculture and FoodFaculty of Veterinary and Agricultural SciencesThe University of MelbourneMelbourneVictoria 3010Australia

Background:A pelleted diet containing camelina hay(CAMH)or camelina meal(CAMM)as a supplement along with a control pellet(CONT)diet formulated with commonly available feeds during summer was used to investigate an alternative pathway for sustainable meat *** meat production was based on a simple estimation of income from meat produced versus feed costs if animals were fed for an extended period over summer compared to early slaughter at the beginning of *** maternal composite wether lambs(Composite)based on Coopworth genetics and 80 pure Merino wether yearlings were divided into 10 groups within breed(n=8)using stratified randomisation based on *** 1 week of adaptation to experimental diets,animals were fed experimental diets for up to10 ***:Animals were slaughtered after either 8,9 or 10 weeks of full feeding when the average liveweight of diet/genetic combination reached a weight appropriate for either‘heavy lamb’or‘heavy hogget’production,which occurred between 8 and 10 weeks of full *** was no diet×breed interactions except for dressing percentage(DP),where Composite lambs fed the CAMH diet had the greatest DP(48.1±0.35)and the Merino yearlings fed the CAMM diet the lowest DP(45.8±0.33).Composite lambs gained 17.6–20.3 kg and Merino yearlings gained 10.7–12.9 kg *** on their DP,this resulted in the production of approximately 8.3–9.5 kg additional carcass weight in Composites and 4.9–5.7 kg in Merinos,which in turn produced greater profit per Composite lamb and a small profit per Merino ***:Composite lambs fed CAMM and CAMH had 5%greater carcass weights at slaughter compared to the CONT group,but dietary treatments did not change carcass weight of Merino yearlings at *** extended feeding approach offered the producer an estimated economic gain of AUD$20.00 to$25.00 when yearly average prices were used(Method 1)and AUD$40.00 to$47.70 when pre-and post-summer

关键词： Animal welfare Environmental sustainability Global demand Livestock Sheep meat Summer feeding