检索结果-南通市图书馆

Plant recruitment and survival as indicators of ecological restoration success in abandoned pasture land in Nurcoung,Victoria,Australia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Processes 2013年第1期2卷 380-392页

作者： Singarayer K Florentine Jessica Gardner Friedrich P Graz sean Moloney School of Science Information Technology and Engineering Federation University AustraliaP.O.Box 663Mt.Helen 3353VICAustralia Greening Australia NC2 Building62 Main StreetNatimuk 3409Australia Department of Land Management Polytechnic of Namibia13Storch Str.P/Bag 13388WindhoekNamibia Department of Botany James Cook University1James Cook DrTownsville CityQLD 4811Australia

Introduction:One of the major impediments to developing better restoration strategies is the inadequate documentation of past restoration *** 2008,Greening Australia commenced ecological restoration on the Nurcoung property in Victoria to enhance local biodiversity,and in this paper we report on the habitat restoration outcomes in the three Ecological Vegetation Classes(EVC)found on this ***:Permanent sample plots(12×20 m)were randomly established in July 2010 in each of the restoration areas,with 9,10,and 24 plots demarcated in Shallow Sands Woodland(SSW),Heathy Woodland(HW),and Sandstone Ridge Woodlands(SRW),*** plots were prepared to include three seeded *** were assessed for seedling recruitment and survival in May 2010,April 2011,and May *** of individual seedling development included their height and cover,and their location within the ***:Our study shows that interaction between the age of the planted and direct-seeded vegetation and the nature of the EVC significantly affects the composition of plants and the soil surface in that species and,further,that soil cover parameters develop in different ways in the different experimental plots.A SIMPER analysis of soil cover parameters shows that most of the variation over the years of restoration is attributable to differences in the amount of bare soil recorded,rather than the amount of leaf-litter cover,and that these changes in soil cover parameters differ between EVCs over the sampling *** direct-seeding study shows that whilst most of the broadcast species were recruited,some species used in the Shallow Sands Woodland,the Heathy Woodland,and the Sandstone Ridge Shrubland did not show evidence of recruitment during the three sampling *** the density of most seedlings increased in subsequent sampling years,the planted species Callitris gracilis,Callitris rhomboidea,Hakea muelleriana,and Melaleuca lanceolata did not ***

关键词： soil planted seedling

Macrophage inhibitory cytokine-1/growth differentiation factor-15 in premalignant and neoplastic tumours in a high-risk pancreatic cancer cohort

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 Gastroenterology 2020年第14期26卷 1660-1673页

作者： Robert sean O’Neill Sam Emmanuel David Williams Alina Stoita Department of Gastroenterology St Vincent’s HospitalSydney 2010Australia St Vincent’s Clinical School Faculty of MedicineUniversity of New South WalesSydney 2010Australia

BACKGROUND Pancreatic cancer(PC)is a leading cause of cancer related mortality worldwide,with poor survival due to late ***,biomarkers have limited use in early diagnosis of *** inhibitory cytokine-1 or growth differentiation factor-15(MIC-1/GDF15)has been implicated as a potential serum biomarker in PC and other *** To determine the role of MIC-1/GDF15 in detecting pre-malignant pancreatic lesions and neoplastic tumours in an asymptomatic high-risk cohort part of Australian Pancreatic Cancer Screening *** A feasibility prospective single centre cohort study was *** recruited for yearly surveillance with endoscopic ultrasound(EUS)had serial fasting blood samples collected before EUS for MIC-1/GDF15,C-reactive protein and carbohydrate antigen *** were stratified into five groups based on EUS findings:Normal;pancreatic cysts,branch-duct intraductal papillary mucinous neoplasm;diffuse non-specific abnormalities;and neoplastic ***-1/GDF15 serum levels were quantified using *** in whom EUS demonstrated abnormalities but not malignancy were closely followed up with magnetic resonance imaging(MRI)or computed *** One hundred twenty participants were prospectively recruited from ***-seven participants(39.2%)had an abnormal EUS and five participants(4.2%)were diagnosed with neoplastic tumours,three by EUS(two pancreatic and one liver)and two by MRI/computed tomography(breast cancer,bladder cancer),which were performed for follow up of abnormal *** serum MIC-1/GDF15 was a significant predictor of neoplastic tumours on receiver operator characteristic curve analysis[area under curve(AUC)=0.814,P=0.023].Baseline serum MIC-1/GDF15 had moderate predictive capacity for branch-duct intraductal papillary mucinous neoplasm(AUC=0.644)and neoplastic tumours noted on EUS(AUC=0.793),however this was not significant(P=0.188 and 0.081 respectively).Seria

关键词： Growth differentiation factor 15 Cytokines Pancreatic neoplasms Digestive system neoplasms Pancreatic diseases Biomarkers Diagnostic screening programs

Quantifying the bearing surface wear of retrieved hip replacements

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biosurface and Biotribology 2019年第1期5卷 28-33页

作者： sean Bergiers Harry Hothi Robin Richards Johann Henckel Alister Hart Division of Surgery&Interventional Science Institute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK

Accurate quantification of bearing material loss from retrieved metal-on-metal(MOM)hip replacements is key to understanding their *** methods are currently the only means of estimating volumetric wear from retrieved implants and numerous contrasting approaches to obtain these measures have been *** collection strategies have been thoroughly discussed and refined to minimise the effect of error incurring factors;however,there is an opportunity to optimise the current methods of estimating the pre-wear geometry and,therefore,improve the accuracy of wear volume *** automated analysis strategy to quantify volumetric wear is proposed in this study,which utilises the entire bearing surface to determine the implants pristine *** involves the iterative removal of geometrically effected data points to optimise the fit and size of a perfect *** fitted,this reference geometry is compared with the measured data,in its entirety,to calculate the volume change representative of the quantity of material *** the reliability of this parameter could influence the care of a million patients that remain with MOM hip *** validation of this method will dominate future work,ensuring that the accuracy and reliability of this approach are sufficient to provide clinically meaningful data.

关键词： wear surface meaningful

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

No property in man

No property in man

Sex differences in the influence of social context, salient social stimulation and amphetamine on ultrasonic vocalizations in prairie voles

作者： sean Wilentz.

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

作者： sean Carswell.

学校读者我要写书评

暂无评论

Integrative Zoology 2014年第3期9卷 280-293页

作者： sean T.MA Shanna L.RESENDEZ Brandon J.ARAGONA Department of Psychology Program in Neuroscience University of MichiganAnn ArborMIUSA

Prairie voles(Microtus ochrogaster)are a socially monogamous rodent species and their cooperative behaviors require extensive communication between *** use ultrasonic vocalizations(USVs)to communicate and because a prairie vole breeder pair must engage in extensive cooperation for successful reproduction,auditory communication may be critical for this ***,we sought to characterize USVs in adult male and female prairie voles,and to determine how these calls are influenced by social context,salient social stimuli and the psychostimulant drug of abuse amphetamine(AMPH).Here,we characterize prairie vole USVs by showing the range of frequencies of prairie vole USVs,the proportion of various call types,how these call types compare between males and females,and how they are influenced by social stimulation and *** caused a robust increase in the number of USVs in both males and females and there was a dramatic sex difference in the complexity of call structures of AMPH-induced USVs,with males emitting more elaborate ***,we show that novel(***)social cues evoked differential increases in USVs across sex,with males showing a much more robust increase in USV production,both with respect to the frequency and complexity of USV *** to an estrous female in particular caused an extraordinary increase in USVs in male *** data suggest that USVs may be a useful measure of social motivation in this species,including how social behaviors can be impacted by drugs of abuse.

关键词： amphetamine dopamine mate choice pair bonding ultrasonic vocalization

Comment on “Using a modern analogue to interpret depositional position in ancient fluvial-tidal channels:Example from the McMurray Formation,Canada” by Andrew *** Croix,Shahin ***,James ***,Geoscience Frontiers,Volume 10,Issue 6,Pages 2

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2020年第3期11卷 1081-1086页

作者： Paul R.Durkin sean C.Horner Cynthia A.Hagstrom Department of Geological Sciences University of ManitobaWinnipegMBCanada Department of Geoscience University of CalgaryCalgaryABCanada CNOOC International CalgaryABCanada

*** La Croix et al.(2019)attempt to interpret the depositional position of the Lower Cretaceous McMurray Formation"A Valley"deposits using the tidally-influenced Fraser River in British Columbia as a modern *** of a portion of seven cores from three study areas(South,Central,and North)positioned along a 145-km basinward transect suggests that observed sedimentological and ichnological trends are indicative of a time-equivalent fluvial-tidal transition(FTT)zone within the"A Valley".

关键词： tidal fluvial depositional

NSD3S stabilizes MYC through hindering its interaction with FBXW7

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Molecular Cell Biology 2020年第6期12卷 438-447页

作者： Valentina Gonzalez-Pecchi Albert KKwan sean Doyle Andrey AIvanov Yuhong Du Haian Fu Graduate Program in Cancer Biology Emory UniversityAtlantaGAUSA Department of Pharmacology and Chemical Biology Emory Chemical Biology Discovery CenterEmory UniversityAtlantaGAUSA Winship Cancer Institute Emory UniversityAtlantaGAUSA Department of Hematology&Medical Oncology Emory UniversityAtlantaGAUSA

The MYC transcription factor plays a key role in cell growth control. Enhanced MYC protein stability has been found to promote tumorigenesis. Thus, understanding how MYC stability is controlled may have significant implications for revealing MYC-driven growth regulatory mechanisms in physiological and pathological processes. Our previous work identified the histone lysine methyltransferase nuclear receptor binding SET domain protein 3 (NSD3) as a MYC modulator. NSD3S, a noncatalytic isoform of NSD3 with oncogenic activity, appears to bind, stabilize, and activate the transcriptional activity of MYC. However, the mechanism by which NSD3S stabilizes MYC remains to be elucidated. To uncover the nature of the interaction and the underlying mechanism of MYC regulation by NSD3S, we characterized the binding interface between both proteins by narrowing the interface to a 15-amino acid region in NSD3S that is partially required for MYC regulation. Mechanistically, NSD3S binds to MYC and reduces the association of F-box and WD repeat domain containing 7 (FBXW7) with MYC, which results in suppression of FBXW7-mediated proteasomal degradation of MYC and an increase in MYC protein half-life. These results support a critical role for NSD3S in the regulation of MYC function and provide a novel mechanism for NSD3S oncogenic function through inhibition of FBXW7-mediated degradation of MYC.

关键词： cancer FBXW7 MYC NSD3S protein–protein interaction

Classification of higher- and lower-mileage runners based on running kinematics

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 2019年第3期8卷 249-257页

作者： Christian A.Clermont Angkoon Phinyomark sean T.Osis Reed Ferber Faculty of Kinesiology University of Calgary Institute for Scientific Interchange (ISI )Foundation Running Injury Clinic Faculty of Nursing University of Calgary

Background: Running-related overuse injuries can result from the combination of extrinsic(e.g., running mileage) and intrinsic risk factors(e.g.,biomechanics and gender), but the relationship between these factors is not folly understood. Therefore, the first purpose of this study was to determine whether we could classify higher-and lower-mileage runners according to differences in lower extremity kinematics during the stance and swing phases of running gait. I he second purpose was to subgroup the runners by gender and determine whether we could classify higherand lower-mileage runners in male and female ***: Participants were allocated to the "higher-mileage" group(≥32 km/week; n= 41(30 females)) or to the "lower-mileage" group(≤25 km;n= 40(29 females)). Three-dimensional kinematic data were collected during 60 s of treadmill running at a self-selected speed(2.61 ± 0.23 m/s).A support vector machine classifier identified kinematic differences between higher-and lower-mileage groups based on principal component ***: Higher-and lower-mileage runners(both genders) could be separated with 92.59% classification accuracy. When subgrouping by gender,higher-and lower-mileage female runners could be separated with 89.83% classification accuracy, and higher-and lower-mileage male runners could be separated with 100% classification ***: These results demonstrate there are distinct kinematic differences between subgroups related to both mileage and gender, and that these factors need to be considered in future research.

关键词： Biomechanics Clinical biomechanics Gait analysis Kinematics Motion analysis:Running mileage Running subgroups