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Epidemiology of injuries in male and female youth football players:A systematic review and meta-analysis

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Journal of Sport and Health Science 2022年第6期11卷 681-695,F0003页

作者： Francisco Javier Robles-Palazón Alejandro López-Valenciano Mark De ste croix Jon L.Oliver Alberto García-Gómez Pilar Sainz de Baranda Francisco Ayala Department of Physical Activity and Sport Faculty of Sport SciencesCampus of Excellence Mare NostrumUniversity of MurciaMurcia 30720Spain centre for Sport Studies King Juan Carlos UniversityMadrid 28933Spain School of Sport and Exercise University of GloucestershireGloucester GL29HWUK Youth Physical Development centre School of Sport and Health SciencesCardiff Metropolitan UniversityCardiff CF236XDUK Sport Performance Research Institute New Zealand(SPRINZ) Auckland University of TechnologyAuckland 0632New Zealand Operative Research centre Miguel Hernández University of ElcheElche 03202Spain

Background:To conduct a systematic review and meta-analysis of epidemiological data of injuries in male and female youth football ***:Searches were performed in MEDLINE/PubMed,Web of Science,cochrane Library,and SPORTDiscus *** were considered if they reported injury incidence rate in male and female youth(≤19 years old)football *** reviewers(FJRP and ALV)extracted data and assessed trial quality using the Strengthening the Reporting of Observational Studies in Epidemiology(STROBE)statement and the Newcastle Ottawa *** Grading of Recommendations Assessment,Development,and Evaluation approach determined the quality of *** were combined using a Poisson random effects regression ***:Forty-three studies were *** overall incidence rate was 5.70 injuries/1000 h in males and 6.77 injuries/1000 h in *** injury incidence(14.43 injuries/1000 h in males and 14.97 injuries/1000 h in females)was significantly higher than training injury incidence(2.77 injuries/1000 h in males and 2.62 injuries/1000 h in females).The lower extremity had the highest incidence rate in both *** most common type of injury was muscle/tendon for males and joint/ligament for *** injuries were the most common in both *** incidence rate of injuries increased with advances in chronological age in *** male players presented higher match injury incidence than sub-elite *** females,there was a paucity of data for comparison across age groups and levels of ***:The high injury incidence rates and sex differences identified for the most common location and type of injury reinforce the need for implementing different targeted injury-risk mitigation strategies in male and female youth football players.

关键词： Incidence Muscle injuries Severity Soccer Young athletes

An atypical NLR gene confers bacterial wilt susceptibility in Arabidopsis

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Plant communications 2023年第5期4卷 277-294页

作者： choghag Demirjian Narjes Razavi Gang Yu Baptiste Mayjonade Lu Zhang Fabien Lonjon Fabien chardon Se bastien carrere Je rome Gouzy ste phane Genin Alberto PMacho Fabrice Roux Richard Berthome Fabienne Vailleau LIPME Universite de ToulouseINRAECNRSCastanet-TolosanFrance Shanghai center for Plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghaiChina Universite Paris-Saclay INRAEAgroParisTechInstitut Jean-Pierre Bourgin(IJPB)78000 VersaillesFrance Present address:Department of cell&Systems Biology University of TorontoTorontoONCanada Present address:Department of Biology NYU12 Waverly PlaceNew YorkNY 10003USA

Quantitative disease resistance(QDR)remains the most prevalent form of plant resistance in crop fields and wild ***-wide association studies(GWAS)have proved to be successful in deciphering the quantitative genetic basis of complex traits such as *** unravel the genetics of QDR to the devastating worldwide bacterial pathogen Ralstonia solanacearum,we performed a GWAS by challenging a highly polymorphic local mapping population of Arabidopsis thaliana with four *** type III effector(T3E)mutants,identified as key pathogenicity determinants after a first screen on an *** core collection of 25 *** most quantitative trait loci(QTLs)were highly specific to the identity of the T3E mutant(ripAc,ripAG,ripAQ,and ripU),we finely mapped a common QTL located on a cluster of nucleotide-binding domain and leucine-rich repeat(NLR)genes that exhibited structural *** functionally validated one of these NLRs as a susceptibility factor in response to ***,named it Bacterial Wilt Susceptibility 1(BWS1),and cloned two alleles that conferred contrasting levels of *** characterization indicated that expression of BWS1 leads to suppression of immunity triggered by different *** *** addition,we showed a direct interaction between BWS1 and RipAc T3E,and BWS1 and SUPPRESSOR OF G2 ALLELE OF skp1(SGT1b),the latter interaction being suppressed by ***,our results highlight a putative role for BWS1 as a quantitative susceptibility factor directly targeted by the T3E RipAc,mediating negative regulation of the SGT1-dependent immune response.

关键词： Ralstonia solanacearum typeⅢeffectors Arabidopsis thaliana GWAS R gene susceptibility

Silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve

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Neural Regeneration Research 2025年第6期20卷 1789-1800页

作者： carina Hromada Patrick Heimel Markus Kerbl LászlóGál Sylvia Nürnberger Barbara Schaedl James Ferguson Nicole Swiadek Xavier Monforte Johannes c.Heinzel Antal Nógrádi Andreas H.Teuschl-Woller David Hercher Department Life Science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian cluster for Tissue Regeneration ViennaAustria Ludwig Boltzmann Institute for Traumatology The Research Center in Cooperation with AUVAViennaAustria University clinic of Dentistry Medical University of ViennaViennaAustria Department of Plastic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of Hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tNGcs). However, the use of tNGcs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). Given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tNGc would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tNGcs and compared the various features of these improved silk^(+) tNGcs with the tubes without holes(silk^(–) tNGcs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tNGcs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tNGcs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tNGcs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tNGcs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimizatio

关键词： axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularization

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爱上3D打印机

作者： (美)bre Pettis (美)Anna Kaziunas France (美)Jay Shergill

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使用互补晶体管的鉴频器

航空兵器 1967年第6期 37-48页

作者： Werner ste gert

本文介绍了两个鉴频器,一个产生推挽输出,另一个产生单端输出。电路简单经济。这些电路中使用两个互补晶体管,三个电阻和四个电容器,很简单,经济。其中心频率和带宽可用可变电阻调整。而且对各种输入波形均适用。本文分标了在矩形信号... 详细信息

本文介绍了两个鉴频器,一个产生推挽输出,另一个产生单端输出。电路简单经济。这些电路中使用两个互补晶体管,三个电阻和四个电容器,很简单,经济。其中心频率和带宽可用可变电阻调整。而且对各种输入波形均适用。本文分标了在矩形信号时的性能,同时给出了设计曲线。其他还可用于双稳态工作和频率选择的选通上。

关键词：鉴频器互补晶体管单端输出中心频率频率检波器电子设备基极电流鉴别器

Utility of Kinetic and Kinematic Jumping and Landing Variables as Predictors of Injury Risk: A Systematic Review

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Journal of Science in Sport and Exercise 2020年第4期2卷 287-304页

作者： Jason S.Pedley Rhodri S.Lloyd Paul J.Read Isabel S.Moore Mark De ste croix Gregory D.Myer Jon L.Oliver Youth Physical Development centre Cardiff Metropolitan UniversityCardiffUK Sports Performance Research Institute New Zealand AUT UniversityAucklandNew Zealand centre for Sport Science and Human Performance Waikato Institute of TechnologyWaikatoNew Zealand Institute of Sport Exercise and HealthUniversity College LondonLondonUK School of Sport and Exercise University of GloucestershireGloucesterUK cardiff School of Sport and Health Sciences Cardiff Metropolitan UniversityCardiffUK School of Sport and Exercise University of GloucestershireCheltenhamUK The SPORT center Division of Sports MedicineCincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Departments of Pediatrics and Orthopaedic Surgery College of MedicineUniversity of CincinnatiCincinnatiOHUSA Emory Sport Performance and Research center Flowery BranchAtlantaGAUSA Emory Sports Medicine center AtlantaGAUSA Department of Orthopaedics Emory University School of MedicineAtlantaGAUSA The Micheli center for Sports Injury Prevention WalthamMAUSA

Purpose Jump-landing assessments provide a means to quantify an individual’s ability to attenuate ground reaction forces,generate lower limb explosive power and maintain joint *** order to identify risk factors that can be targeted through appropriate training interventions,it is necessary to establish which(scalar)objective kinetic,kinematic,and performance measures are most associated with lower-extremity *** Online searches of MEDLINE,ScOPUS,EBScOHost,SPORTDiscus and PubMed databases were completed for all articles published before March 2020 in accordance with PRISMA *** 40 articles investigating nine jump-landing assessments were included in this *** 79%of studies using drop jump(n=14)observed an association with future injury,while only 8%of countermovement jump studies(n=13)observed an association with injury *** 57%of studies using unilateral assessments found associations with risk of injury(n=14).Studies using performance measures(jump height/distance)as outcome measure were only associated with injury risk in 30%of ***,those using kinetic and/or kinematic analyses(knee abduction moment,knee valgus angle,knee separation distance,peak ground reaction force)found associations with injury in 89%of *** The landing element of jump-landing assessments appears to be superior for identifying individuals at greater risk of injury;likely due to a closer representation of the injury ***,jump-landing assessments that involve attenuation of impact forces such as the drop jump appear most suited for this purpose but should involve assessment of frontal plane knee motion and ground reaction forces.

关键词： Plyometric Screening Anterior cruciate ligament Lower-extremity

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美国社区银行为何越来越无聊?

商业周刊（中文版） 2024年第8期 22-23页

作者： bre Bradham 竹西(译) 不详

●在硅谷银行破产一年后,美国地区性银行已经接受了其基本的僵化现实今年3月,PNc金融服务集团(PNc Financial Services Group Inc.)推出了电视广告,并在其分支机构张贴标语,称其“没劲透顶”。在4月份的一次电话会议上,Fifth Third Banc... 详细信息

●在硅谷银行破产一年后,美国地区性银行已经接受了其基本的僵化现实今年3月,PNc金融服务集团(PNc Financial Services Group Inc.)推出了电视广告,并在其分支机构张贴标语,称其“没劲透顶”。在4月份的一次电话会议上,Fifth Third Bancorp首席执行官蒂姆·斯宾塞(Tim Spence)夸口说,该银行的业绩“很没劲”。4月25日,columbia Banking System Inc.22首席信贷官弗兰克·纳姆达尔(Frank Namdar)形容他们银行的房地产贷款组合“真的很没劲,而像我这样的人喜欢看到这种情况”。

关键词：房地产贷款硅谷银行首席执行官电视广告斯宾塞分支机构

ALGOMA钢公司7号高炉产量达6550短吨／天

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湘钢译丛 1997年第2期 5-17页

作者： ste,S 彭觉

Finite element analysis of the effect of interlayer on interfacial stress transfer in layered graphene nanocomposites

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Journal of Materials Science & Technology 2019年第6期35卷 1147-1152页

作者： c.c.Roach Y.c.Lu Department of Mechanical Engineering University of Kentucky

Understanding the roles of interlayers in reinforcement efficiencies by layered graphene is very important in order to produce strong and light graphene based nanocomposites. The present paper uses the finite element method to evaluate the interfacial strain transfers and reinforcement efficiencies in layered graphene-polymer composites. Results indicate that the presence of compliant interlayers in layered graphene plays significant roles in the transfers of strain/stress from matrix to graphene and subsequently the reinforcement effectiveness of layered graphene. In general, the magnitude of shear strain transferred onto the rigid graphene decreases as the thickness of the interlayer increases. This trend becomes insignificant as the graphene becomes sufficiently large(s>25,000). The shear strain at the interface of graphene-matrix is also greatly influenced by the interlayer modulus. A stiffer interlayer would result in a higher shear strain transferred on the graphene. The performance of the interlayers is further affected by the property of the composite and the architecture of the layered graphene stack. If a composite contains more graphene phase, the efficiency of reinforcement by a layered graphene becomes improved. If a graphene stack contains more interlayers, the effectiveness of reinforcement at the edges of the graphene becomes negatively affected.

关键词： Interlayer Layered graphene Nanocomposites Interfacial stress transfer Finite element method