检索结果-南通市图书馆

Impact of exergaming on young children's school day energy expenditure and moderate-to-vigorous physical activity levels

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2017年第1期6卷 11-16页

作者： Zan Gao zachary Pope Jung Eun Lee David Stodden Nida Roncesvalles Denis Pasco charles c.Huang Du Feng School of Kinesiology The University of MinnesotaMinneapolisMN 55455USA Department of Applied Human Science The University of MinnesotaDuluthMN 55812USA Department of Physical Education and Athletic Training University of South CarolinaColumbiaSC 29201USA Department of Kinesiology and Sport Management Texas Tech UniversityLubbockTX 79409USA School of Education The University of Bourgogne Franche-ComtéBesançon 25000France School or Exercise and Sports Science Wayland Baptist UniversityPlainviewTX 79072USA School of Nursing University of NevadaLas VegasNV 89154USA

Background: Although emerging research is demonstrating the potential health impact of exergaming,investigations have primarily been conducted in laboratory settings among small samples with short-term *** on the effectiveness of exergaming in underserved children's objective physical activity(PA) in population-based settings is also ***,most empirical studies have only included 1 type of exergame in the ***,this study's purpose was to investigate the long-term impact of a multigame exergaming intervention among underserved children integrated within school ***,this study examined the effect of exergaming on children's accelerometer-determined sedentary behavior(SB),light PA,moderate-to-vigorous PA(MVPA),and energy expenditure(EE) over 2 years as compared with regular physical education(PE) ***: A total of 261 second-and third-grade children(134 girls,127 boys; mean age 8.27 years) were recruited from 2 Texas elementary ***'s pre-test 3-day SB,light PA,MVPA,and EE at school were assessed in the fall of *** were assigned to 1 of 2groups:(1) exergaming/PE group(125 min weekly of exergaming-based PA program) and (2) comparison group(125 min weekly of PE).PA(SB,light PA,and MVPA) and EE outcome variables were assessed again in 2013(post-test) and 2014(follow-up).Results: Significant time effects were observed for SB(F(1,162)=25.0,p0.05,η~2= 0.004).Subsequent pairwise comparisons revealed significant increases from pre-to post-test for light PA(pchanges in SB(p>0.05).conversely,significant decreases occurred in light PA(pces seen in MVPA(p=0.08) and EE(p=0.06) over the same time period.A significant increase was seen,however,for SB from post-te

关键词： Active video games childhood obesity Light physical activity Moderate-to-vigorous physical activity Physical education Sedentary behavior

Methodologies for preparation of prokaryotic extracts for cell-free expression systems

在线全文

学校读者我要写书评

暂无评论

Synthetic and Systems Biotechnology 2020年第4期5卷 252-267页

作者： Stephanie D.cole Aleksandr E.Miklos Abel c.chiao zachary Z.Sun Matthew W.Lux US Army combat capabilities Development command chemical Biological center 8567 Ricketts Point RoadAberdeen Proving GroundMD21010USA Division of Biology and Biological Engineering California Institute of TechnologyPasadenaCAUSA Synvitrobio Inc. San FranciscoCAUSA 8567 Ricketts Point Road Bldg E3549 Room B140APGMD21010USA

cell-free systems that mimic essential cell functions,such as gene expression,have dramatically expanded in recent years,both in terms of applications and widespread *** we provide a review of cell-extract methods,with a specific focus on prokaryotic ***,we describe the diversity of Escherichia coli genetic strains available and their corresponding *** then trace the history of cell-extract methodology over the past 20 years,showing key improvements that lower the entry level for new ***,we survey the rise of new prokaryotic cell-free systems,with associated methods,and the opportunities ***,we use this historical perspective to comment on the role of methodology improvements and highlight where further improvements may be possible.

关键词： cell-free systems cell-free expression cell-free extract Synthetic biology Methods

Selective serotonin re-uptake inhibitor sertraline inhibits bone healing in a calvarial defect model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Oral Science 2018年第4期10卷 212-222页

作者： R.Nicole Howie Samuel Herberg Emily Durham zachary Grey Grace Bennfors Mohammed Elsalanty Amanda c.LaRue William D.Hill James J.cray Oral Health Sciences Medical University of South CarolinaCharlestonSCUSA Biomedical Engineering Case Western Reserve UniversityClevelandOHUSA cellular Biology and Anatomy Augusta UniversityAugustaGAUSA Oral Biology Augusta UniversityAugustaGAUSA Orthopaedic Surgery Augusta UniversityAugustaGAUSA Pathology and Laboratory Medicine Medical University of South CarolinaCharlestonSCUSA Institute for Regenerative and Reparative Medicine Augusta UniversityAugustaGAUSA Research Service of the Ralph H Johnson VA Medical center CharlestonSCUSA charlie Norwood VA Medical center AugustaGAUSA Department of Regenerative Medicine and cellular Biology CharlestonSCUSA Wake Forest Institute for Regenerative Medicine Wake Forest School of MedicineWinston-SalemNCUSA Division of Anatomy College of MedicineOhio State UniversityColumbusOHUSA

Bone wound healing is a highly dynamic and precisely controlled process through which damaged bone undergoes repair and complete regeneration. External factors can alter this process, leading to delayed or failed bone wound healing. The findings of recent studies suggest that the use of selective serotonin reuptake inhibitors(SSRIs) can reduce bone mass, precipitate osteoporotic fractures and increase the rate of dental implant failure. With 10% of Americans prescribed antidepressants, the potential of SSRIs to impair bone healing may adversely affect millions of patients’ ability to heal after sustaining trauma. Here, we investigate the effect of the SSRI sertraline on bone healing through pre-treatment with(10 mg·kg-1sertraline in drinking water, n = 26) or without(control, n = 30) SSRI followed by the creation of a 5-mm calvarial defect. Animals were randomized into three surgical groups:(a) empty/sham,(b) implanted with a DermaMatrix scaffold soak-loaded with sterile PBS or(c) DermaMatrix soak-loaded with542.5 ng BMP2. SSRI exposure continued until sacrifice in the exposed groups at 4 weeks after surgery. Sertraline exposure resulted in decreased bone healing with significant decreases in trabecular thickness, trabecular number and osteoclast dysfunction while significantly increasing mature collagen fiber formation. These findings indicate that sertraline exposure can impair bone wound healing through disruption of bone repair and regeneration while promoting or defaulting to scar formation within the defect site.

关键词： Selective serotonin re-uptake inhibitor sertraline inhibits bone healing in a calvarial defect model

Impact of hydrolysis on surface area and energy storage applications of activated carbons produced from corn fiber and soy hulls

在线全文

学校读者我要写书评

暂无评论

carbon Resources conversion 2020年第1期3卷 19-28页

作者： zachary D.Herde Ruchira Dharmasena Gamini Sumanasekera Jaya Shankar Tumuluru Jagannadh Satyavolu conn center for Renewable Energy Research University of LouisvilleLouisvilleKYUSA Energy Systems Laboratory Idaho National LaboratoryIdaho FallsIDUSA School of chemical and Biomolecular Eng Georgia Institute of TechnologyUnited States

complete utilization of lignocellulosic biomass through the creation of value-added coproducts is one of the key strategies of the Bioenergy Technologies Office(BETO)for the cost-effective production of biofuels and biochemicals.A green approach to producing lightweight and high specific surface area(SSA)activated carbons(Acs)from sustainable biomass sources is of great interest to producers and users of energy devices such as batteries and *** direct conversion from biomass has been studied extensively,Ac with relatively high surface areas can be produced more cost-effectively when leveraged as a co-product from a *** this paper,we discuss the production of high specific surface area activated carbons from residual fiber(fiber remaining after extraction of c5-sugars)generated as part of a c5 *** surface,morphological characteristics using SEM and TEM,and energy storage behavior of Acs produced using the c5 extracted residual fiber were evaluated in the present *** Acs produced from the residual fiber delivered an order of magnitude higher surface area than the one directly from corn pericarp fiber and soy *** surface area of the Acs produced from pre-hydrolysis DDG was only 10 m^(2)/g compared to 689 m^(2)/g for soy hulls whereas after hydrolysis these values increased significantly(DDG:1700 m^(2)/g and soy hulls:1300 m^(2)/g).TEM images indicated high exfoliation,explaining the change in surface area *** the same current density(500 mA/g)the cycling performance of the Acs increased as the surface area increased significantly.

关键词： Agricultural residues Hydrolysis Activated carbon Surface area characterization Surface morphology

Why total knees fail-A modern perspective review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Orthopedics 2018年第4期9卷 60-64页

作者： zachary c Lum Alvin K Shieh Lawrence D Dorr Department of Orthopaedic Surgery Davis Medical Center University of California Department of Orthopaedic Surgery Keck Medical Center of University of Southern California

Historically, the most common mechanism of total kneearthroplasty(TKA) failures included aseptic loosening, instability and malalignment. As polyethylene production improved, modes of failure from polyethylene wear and subsequent osteolysis became less prevalent. Newer longitudinal studies report that infection has become the primary acute cause of failure with loosening and instability remaining as the overall greatest reasons for revision. clinical database and worldwide national registries confirm these reports. With an increasing amount of TKA operations performed in the United States, and with focus on value-based healthcare, it is imperative to understand why total knees fail.

关键词： Total knee arthroplasty failure mechanism Total knee arthroplasty failure mode Revision total knee arthroplasty Periprosthetic joint infection Aseptic loosening total knee Total knee arthroplasty instability

Factors associated with concussion-symptom knowledge and attitudes toward concussion care seeking in a national survey of parents of middle-school children in the US

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2021年第2期10卷 113-121页

作者： zachary Y.Kerr Aliza K.Nedimyer Melissa c.Kay Avinash chandran Paula Gildner K.Hunter Byrd Juliet K.Haarbauer-Krupa Johna K.Register-Mihalik Department of Exercise and Sport Science University of North Carolina at Chapel HillChapel HillNC 27599-8700USA Matthew Gfeller Sport-Related Traumatic Brain Injury Research center University of North CarolinaChapel HillNC 27599-8700USA Injury Prevention Research center University of North CarolinaChapel HillNC 27510USA Human Movement Science curriculum University of North CarolinaChapel HillNC 27599-8700USA School of Health Professions University of Southern MississippiHattiesburgMS 39406USA Datalys center for Sports Injury Research and Prevention IndianapolisIN 46202USA National center for Injury Prevention and control Centers for Disease Control and PreventionAtlantaGA 30341USA

Background:Developing appropriate concussion prevention and management paradigms in middle school(MS)settings requires understanding parents’general levels of concussion-related knowledge and *** study examined factors associated with concussion-symptom knowledge and care-seeking attitudes among parents of MS children(aged 10-15 years).Methods:A panel of 1224 randomly selected ***,aged ≥18 years and identifying as parents of MS children,completed an online questionnaire capturing parental and child *** parents’concussion-symptom knowledge was measured using 25 questions,with possible answers being“yes”,“maybe”,and“no”.correct answers earned 2 points,“maybe”answers earned 1 point,and incorrect answers earned 0 point(range:0-50;higher scores=better knowledge).concussion care-seeking attitudes were also collected using five 7-point scale items(range:5-35;higher scores=more positive attitudes).Multivariable ordinal logistic regression models identified predictors of higher *** met proportional odds *** odds ratios(aORs)with 95%confidence intervals(95%cIs)(excluding 1.00)were deemed statistically ***:Median scores were 39(interquartile range:32-44)for symptom knowledge and 32(interquartile range:28-35)for care-seeking *** multivariable models,odds of better symptom knowledge were higher in women ***(aOR=2.28;95%cI:1.71-3.05),white/non-Hispanics *** racial or ethnic groups(aOR=1.88;95%cI:1.42-2.49),higher parental age(10-year-increase aOR=1.47;95%cI:1.26-1.71),and greater competitiveness(10%-scale-increase aOR=1.24;95%cI:1.13-1.36).Odds of more positive care-seeking attitudes were higher in white/non-Hispanics *** racial or ethnic groups(aOR=1.45;95%cI:1.06-1.99)and in older parental age(10-year-increase aOR=1.24;95%cI:1.05-1.47).conclusion:characteristics of middle school children’s parents(e.g.,sex,race or ethnicity,age)are associated with their concussion-symptom knowle

关键词： Pediatrics Traumatic brain injury Youth

control of flowering and inflorescence architecture in tomato bysynergistic interactions between ALOG transcription factors

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2018年第10期45卷 557-560页

作者： Xiaozhen Huang Lingli Tang Yuan Yu Justin Dalrymple zachary B.Lippman cao Xu State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of Sciencesand National Center for Plant Gene ResearchBeijing 100101China cAS-JIc centre of Excellence for Plant and Microbial Science(cEPAMS) Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Graduate School of University of chinese Academy of Sciences Beijing 100049China cold Spring Harbor Laboratory Cold Spring Harbor11724USA

Inflorescences are flower-bearing shoots that originate from pools of stem cells in shoot apical meristems (SAM).Inflorescence architecture is determined by a process of meristem maturation,during which stem cell fate switches from a vegetative to a reproductive growth program.A major factor in plant reproductive success in nature and yield in agriculture is the number of branches and flowers on inflorescences (Kobayashi and Weigel,2007;

关键词： control of flowering and inflorescence architecture in tomato by synergistic interactions between ALOG transcription factors

Long-Term cropping System, Tillage, and Poultry Litter Application Affect the chemical Properties of an Alabama Ultisol

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2019年第2期29卷 180-194页

作者： Zhongqi HE Irenus A.TAZISONG Xinhua YIN Dexter B.WATTS zachary N.SENWO Henry Allen TORBERT United States Department of Agriculture-Agricultural Research Service(USDA-ARS) Southern Regional Research Center Department of Biological and Environmental Sciences Alabama A&M University Department of Plant Sciences University of Tennessee United States Department of Agriculture-Agricultural Research Service(USDA-ARS) National Soil Dynamics Laboratory

Sustainable agricultural practices have been steadily increasing in the last couple of decades. These management practices frequently involve cover crops, less or no-tillage, and organic fertilization. In this study, we evaluated the effects of cropping systems,tillage and no-tillage, and the application of poultry litter(PL) on selected soil physicochemical properties and soil test nutrients. Soil samples were collected from the topmost surface(0–5 cm) and subsurface(5–10 cm) layers. The general effect trend was PL application > no-tillage > cover crop > cropping type. There were more statistically significant(P ≤ 0.05) correlations between the 18 soil attributes at the topmost surface than at the subsurface. This could be due to the accumulation of external c inputs and nutrients by crop residues and PL application as well as the retaining effects of no-tillage on less mobile nutrient components. Because of their high mobility and volatile nature, total nitrogen(N), ammonia-N(NH_4^+-N), and nitrate-N(NO_3^--N) levels varied greatly(high standard deviations), showing no consistent patterns among the treatments. compared to the soybean cropping system, corn, especially with the wheat cover crop, contributed more to the total carbon(c) and sulfur(S) in the topmost surface soils(0–5 cm). Poultry litter application greatly increased pH, cation exchange capacity(cEc), base saturation, magnesium(Mg), phosphorus(P), calcium(ca),sodium(Na), potassium(K), manganese(Mn), copper(cu), and zinc(Zn) in both soil layers. contrast comparisons revealed that PL application had more of an effect on these soil chemical properties than no-tillage and cropping systems. These results will shed light on developing better nutrient management practices while reducing their runoff potentials.

关键词： conventional tillage cover crop Mehlich-3 extraction no-tillage nutrient management practice organic fertilization soil attributes soil test nutrients

Longitudinal Participatory Surveillance Highlights Association Between Mask-Wearing and Lower cOVID-19 Risk-United States,2020

在线全文

学校读者我要写书评

暂无评论

china cDc weekly 2022年第52期4卷 1169-1175页

作者： Makayla Swaciak zachary Popp Autumn Gertz Kara Sewalk Marinanicole Schultheiss Benjamin Rader John S.Brownstein computational Epidemiology Lab Boston Children’s HospitalBostonMAUSA Boston University School of Public Health Boston UniversityBostonMAUSA Harvard Medical School Harvard UniversityCambridgeMAUSA.

Summary What is already known about this topic?Numerous ecological and laboratory studies suggest face masks are an effective non-pharmaceutical intervention for reducing the spread of coronavirus disease 2019(cOVID-19),but cannot otherwise assess individual-level *** is added by this report?Using a prospective cohort of individuals enrolled in a participatory,syndromic surveillance tool prior to the first case of cOVID-19 in the United States,we present a novel longitudinal assessment of the effectiveness of face masks.

关键词： Lower otherwise cOV