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The Impact of Land Use Change for Greenhouse Gas Inventories and State-Level Climate Mediation Policy: A GIS Methodology Applied to Connecticut

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Journal of Environmental Protection 2014年第17期5卷 1572-1587页

作者： Linda powers Tomasso Mark Leighton Sustainability and Environmental Management Program Harvard University Cambridge USA

Greenhouse gas (GHG) inventories conducted at state and regional levels serve to quantify long-term emissions trends and set benchmarks against which to evaluate the effectiveness of state government-mandated emissions reductions. GHG inventories which incompletely account for land use, land change, and forestry (LUCF) due to insufficient measurement tools discount the value of terrestrial carbon (C) sinks. In consequence, sink preservation is often omitted from regional land use planning. This paper proposes an accounting methodology which estimates foregone C sequestration derived LUCF change in the southern New England State of Connecticut (CT). The Natural Capital Project’s InVEST program provided a template for modeling C storage and sequestration for CT’s land class categories. LandSat mapping of long-term land cover patterns in CT conducted by CLEAR at the University of CT served as input data for InVEST computer modeling of C sequestration, both realized and foregone due to LUCF. The results showed that: 1) Land converted from high C density forestland to low density C land cover classes reduced the rate of C sequestration loss at 4.62 times the rate of forest reduction. Forest loss of 3.83% over twenty-five years was responsible for foregone C sequestration equivalent to 17.68% of total 2010 sequestration. 2) Accumulating C stocks pushed total annual sequestration from a 1985 baseline level of 866 MMTCO2 to 1116 MMTCO2 by 2010—a 250 MMTCO2 increment. 3) C sequestration from forest loss since 1985 would have yielded additional sequestration of 53.74 MMTCO2 by 2010. By 2002, foregone yield surpassed CT’s annual fossil fuel emissions, currently at 40 MMTCO2. 4) Preservation of forest C stocks over time becomes the determining factor for influencing biomass C sequestration levels. Deciduous forests have a preponderant influence on CO2 budgets. The ground-up methodology to quantify land-based C sequestration presented here demonstrates the influence of forest bi

关键词： Carbon Sequestration Forest Carbon Density Climate Change GIS Land Mapping Land Use Change

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Boundary value problems: and partial differential equations 5th ed.

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2006年

作者： David L. powers

来源：畅想之星图书光盘版（南... 评论

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Evaluation of nutrient stoichiometric relationships among ecosystem compartments of a subtropical treatment wetland. Do we have “Redfield wetlands”?

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Ecological Processes 2019年第1期8卷 267-287页

作者： Paul Julian II Stefan Gerber Rupesh K.Bhomia Jill King Todd Z.Osborne Alan L.Wright Matthew powers Jacob Dombrowski Soil and Water Sciences Department University of FloridaFt.PierceFL34945USA Soil and Water Sciences Department University of FloridaGainesvilleFL 32611USA South Florida Water Management District Water Quality Treatment TechnologiesWest Palm BeachFL 33406USA Whitney Laboratory for Marine Bioscience University of FloridaSt AugustineFL 32080USA.

Background:Evaluation of carbon(C),nitrogen(N),and phosphorus(P)ratios in aquatic and terrestrial ecosystems can advance our understanding of biological processes,nutrient cycling,and the fate of organic matter(OM)in these *** of aquatic ecosystems can change the accumulation and decomposition of OM which can alter biogeochemical cycling and alter the base of the aquatic food *** study investigated nutrient stoichiometry within and among wetland ecosystem compartments(i.e.,water column,flocculent,soil,and aboveground vegetation biomass)of two subtropical treatment wetlands with distinct vegetation *** flow-ways(FWs)within the network of Everglades Stormwater Treatment Areas in south Florida(USA)were selected for this *** evaluated nutrient stoichiometry of these to understand biogeochemical cycling and controls of nutrient removal in a treatment wetland within an ecological stoichiometry ***:This study demonstrates that C,N,and P stoichiometry can be highly variable among ecosystem compartments and between *** law slopes of C,N,and P within surface water floc,soil,and vegetation were significantly different between and along ***:Assessment of wetland nutrient stoichiometry between and within ecosystem compartments suggests unconstrained stoichiometry related to P that conforms with the notion of P limitation in the *** in N:P ratios between floc and soil suggest different pathways of organic nutrient accumulation and retention between *** nutrient stoichiometry was highly variable and decoupled(or close to decoupled as indicated by<25%explained variation between parameters),in particular with respect to *** hypothesize that decoupling may be the imprint of variability in inflow nutrient ***,despite active biogeochemical cycles that could act to restore nutrient stoichiometry along the FW,there was little evidence that such balancing occurred,as the

关键词： Decomposition Mineralization Everglades Treatment wetlands

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ANY MORE EARTHS OUT THERE？David Charbonneau searches for life among the stars.

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英语沙龙（高中） 2014年第9期 46-47,56-57页

作者： Vicki Oransky Wittenstein Tom powers

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Reactive oxygen species promote endurance exercise-induced adaptations in skeletal muscles

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Journal of Sport and Health Science 2024年第6期13卷 780-792页

作者： Scott K.powers Zsolt Radak Li Li Ji Malcolm Jackson Department of Applied Physiology University of FloridaGainesvilleFL 32608USA Research Institute of Sport Science Hungarian University of Sport ScienceBudapest 1123Hungary Department of Kinesiology University of MinnesotaSt.PaulMN 55455USA Department of Musculoskeletal and Ageing Science Institute of Life Course and Medical SciencesUniversity of LiverpoolLiverpool L78TXUK

The discovery that contracting skeletal muscle generates reactive oxygen species(ROS)was first reported over 40 years *** prevailing view in the 1980s was that exercise-induced ROS production promotes oxidation of proteins and lipids resulting in muscle ***,a paradigm shift occurred in the 1990s as growing research revealed that ROS are signaling molecules,capable of activating transcriptional activators/coactivators and promoting exercise-induced muscle *** evidence supports the notion that reduction-oxidation(redox)signaling pathways play an important role in the muscle remodeling that occurs in response to endurance exercise *** review examines the specific role that redox signaling plays in this endurance exercise-induced skeletal muscle *** begin with a discussion of the primary sites of ROS production in contracting muscle fibers followed by a summary of the antioxidant enzymes involved in the regulation of ROS levels in the *** then discuss which redox-sensitive signaling pathways promote endurance exercise-induced muscle adaptation and debate the strength of the evidence supporting the notion that redox signaling plays an essential role in muscle adaptation to endurance exercise *** hopes of stimulating future research,we highlight several important unanswered questions in this field.

关键词： Antioxidants Mitochondrial biogenesis Radicals Redox signaling

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Commentary on “The tortuous path of lactate shuttle discovery:From cinders and boards to the lab and ICU”

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Journal of Sport and Health Science 2020年第5期9卷 461-461页

作者： Scott K.powers Department of Applied Physiology and Kinesiology University of FloridaGainesvilleFL32611USA

It is a pleasure to provide a commentary on the outstanding review1 by *** Brooks that discusses both the discovery and importance of the lactate ***,Professor Brooks is highly qualified to review this important ***,*** and his colleagues pioneered the original research that defined the metabolic conditions that regulate lactate production in skeletal muscle as well as the fate of lactate following *** the following paragraphs,I highlight several key concepts emerging from this important review.

关键词： Brooks shuttle qualified

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Sea Family

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小学生时代（大嘴英语） 2019年第6期 18-20页

作者： Andria W. Rosenbaum Daniel powers(图) 不详

Daddy is a dolphin, Mommy is a snail, Grandma is a starfish, Grandpa is a *** is a sea horse, Auntie is a ray. And I'm a little flounder, Splashing through the bay.

关键词： Sea Family Daddy Splashing

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Alterations in renin-angiotensin receptors are not responsible for exercise preconditioning of skeletal muscle fibers

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Sports Medicine and Health Science 2021年第3期3卷 148-156页

作者： Branden L.Nguyen Toshinori Yoshihara Rafael Deminice Jensen Lawrence Mustafa Ozdemir Hayden Hyatt Scott K.powers Department of Applied Physiology and Kinesiology University of FloridaGainesville32611FloridaUSA Department of Exercise Physiology Juntendo UniversityTokyo270-1695Japan Department of Physical Education University of Estadual of LondrinaLondrina10011Brazil

Endurance exercise training promotes a protective phenotype in skeletal muscle known as exercise *** preconditioning protects muscle fibers against a variety of threats including inactivity-induced muscle *** mechanism(s)responsible for exercise preconditioning remain unknown and are explored in these ***,we investigated the impact of endurance exercise training on key components of the renin-angiotensin system(RAS).The RAS was targeted because activation of the classical axis of the RAS pathway via angiotensinⅡtypeⅠreceptors(AT1Rs)promotes muscle atrophy whereas activation of the non-classical RAS axis via Mas receptors(MasRs)inhibits the atrophic signaling of the classical RAS *** by prior studies,we hypothesized that an exercise-induced decrease in AT1Rs and/or increases in MasRs in skeletal muscle fibers is a potential mechanism responsible for exercise *** endurance exercise training in rats,we examined the abundance of AT1Rs and MasRs in both locomotor and respiratory *** results indicate that endurance exercise training does not alter the protein abundance of AT1Rs or MasRs in muscle fibers from the diaphragm,plantaris,and soleus muscles compared to sedentary controls(p>0.05).Furthermore,fluorescent angiotensinⅡ(AngⅡ)binding analyses confirm our results that exercise pre-conditioning does not alter the protein abundance of AT1Rs in the diaphragm,plantaris,and soleus(p>0.05).This study confirms that exercise-induced changes in RAS receptors are not a key mechanism that contributes to the beneficial effects of exercise preconditioning in skeletal muscle fibers.

关键词： Exercise preconditioning Renin-angiotensin system Skeletal muscle disuse atrophy Skeletal muscle

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SOPHIE: Generative Neural Networks Separate Common and Specific Transcriptional Responses

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Genomics, Proteomics & Bioinformatics 2022年第5期20卷 912-927页

作者： Alexandra J.Lee Dallas L.Mould Jake Crawford Dongbo Hu Rani K.powers Georgia Doing James C.Costello Deborah A.Hogan Casey S.Greene Genomics and Computational Biology Graduate Program University of PennsylvaniaPhiladelphiaPA 19104USA Department of Microbiology and Immunology Geisel School of Medicine at DartmouthHanoverNH 03755USA Department of Systems Pharmacology and Translational Therapeutics University of PennsylvaniaPhiladelphiaPA 19104USA Wyss Institute for Biologically Inspired Engineering Harvard UniversityBostonMA 02115USA Department of Pharmacology University of Colorado School of MedicineDenverCO 80045USA Center for Health AI University of Colorado School of MedicineDenverCO 80045USA Department of Biochemistry and Molecular Genetics University of Colorado School of MedicineDenverCO 80045USA

Genome-wide transcriptome profiling identifies genes that are prone to differential expression(DE)across contexts,as well as genes with changes specific to the experimental *** genes that are specifically changed in a context of interest from common differentially expressed genes(DEGs)allows more efficient prediction of which genes are specific to a given biological process under ***,common DEGs or pathways can only be identified through the laborious manual curation of experiments,an inordinately time-consuming *** we pioneer an approach,Specific cOntext Pattern Highlighting In Expression data(SOPHIE),for distinguishing between common and specific transcriptional patterns using a generative neural network to create a background set of experiments from which a null distribution of gene and pathway changes can be *** apply SOPHIE to diverse datasets including those from human,human cancer,and bacterial pathogen Pseudomonas *** identifies common DEGs in concordance with previously described,manually and systematically determined common *** molecular validation indicates that SOPHIE detects highly specific but low-magnitude biologically relevant transcriptional ***’s measure of specificity can complement log2 fold change values generated from traditional DE *** example,by filtering the set of DEGs,one can identify genes that are specifically relevant to the experimental condition of ***,these results can inform future research *** scripts used in these analyses are available at https://***/greenelab/*** can access https://***/greenelab/sophie to run SOPHIE on their own data.

关键词： Neural network Transcriptomics Software Differential expression analysis Machine learning

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激光治疗脑肿瘤的现状

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国外医学（肿瘤学分册） 1992年第6期19卷 359-361页

作者： powers SK 哈献文

激光显微外科的出现,给神经外科医生提供了一种精确的、止血稳定的神经组织去除方法。新型激光波长为1.32μm和1.44μm的Nd:YAG激光对神经组织的作用可与CO_2激光相媲美。其潜在优势在了波长大于1.3μm的激光提高了水的吸收系数,并可借... 详细信息

激光显微外科的出现,给神经外科医生提供了一种精确的、止血稳定的神经组织去除方法。新型激光波长为1.32μm和1.44μm的Nd:YAG激光对神经组织的作用可与CO_2激光相媲美。其潜在优势在了波长大于1.3μm的激光提高了水的吸收系数,并可借石英光纤输导,使医生的操作更为便利。硫酸钛钾(KTP)激光有如倍频的Nd:YAG,波长为532μm,是Ar^+激光的第二代产品。

关键词：脑肿瘤激光疗法

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