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XUV Spectroscopy of Subpicosecond Laser Produced Plasmas

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Chinese Physics Letters 1994年第9期11卷 554-557页

作者： JIANG Zhiming J.C.kieffer m.Chaker On leave from Shanghai Institute of Optics and Fine mechanics Academia SinicaShanghai 201800 Institute National de la RecherchèScientifique INRS-énergie et matérauxC.P.1020VarennesQuebecCanada J3X 1S2

The keV and XUV spectra of plasmas produced by the interaction of a laser pulse of various duration and wavelengths with,a solid Al target are compared and *** decrease of the XUV emission from the high ionization states was observed with the shortest pulses(500fs)and the shortest wavelength(0.5μm),which may be due to rapid cooling and quenching of ultrashort-lived and initially ultra-dense plasmas.

关键词： ultrashort shortest picosecond

A longitudinal analysis of the U.S. Air Force Reserve Officers’ Training Corps physical fitness assessment

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military medical Research 2020年第2期7卷 166-173页

作者： cameron Smackey Jason mDe Freitas Applied Neuromuscular Physiology Laboratory Oklahoma State University192 CRCStillwaterOK 74078USA

Background:The *** Force physical fitness assessment(PFA)is used to determine the overall fitness of their *** is currently unknown to what extent the PFA scores of Reserve Officers’Training Corps(ROTC)cadets are affected by mandatory physical *** purpose of this investigation was to longitudinally examine the PFAs of ROTC cadets over a four-year period,evaluate the results across class ranks,and evaluate the sensitivity of the classification of the ***:Air Force ROTC cadets performed the PFAs(abdominal circumference,1-min pushups,1-min sit-ups,and a 1.5-mile run)in both the spring(n=26)and fall(n=22)*** were compiled over a four-year period(Spring 2014–Fall 2017)and were performed in accordance with Air Force Instruction 36–2905.A oneway repeated measures ANOVA was performed separately for the fall and spring groups for each dependent variable across the 4 ***,a one-way between groups ANOVA was performed for each dependent variable during the time point(fall 2015;n=46)with the most recorded cadets for each class ***:Longitudinal assessments revealed a main effect of time(P=0.010)on abdominal circumference;cadets had a smaller abdominal circumference in their freshman year than in their senior year.A main effect of time(P=0.006)was also observed on sit-up quantity;cadets performed more sit-ups in their junior year than in their freshman *** between class ranks during the same year(between-subjects ANOVA)revealed a main effect of class rank on sit-up quantity(P=0.003);the freshmen completed fewer repetitions than the sophomores(P=0.018)and the juniors did(P=0.001).Conclusions:The results indicated that only the sit-up component showed differences between class *** findings suggest that the Air Force PFA may not be sensitive enough to detect changes in physical fitness or distinguish between class ranks regarding physical performance,even after years of *** limitation may b

关键词： Class ranks Fitness assessment military Physical training ROTC

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Wilson disease:At the crossroads between genetics and epigeneticsdA review of the evidence

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Liver Research 2017年第2期1卷 121-130页

作者： Dorothy A.kieffer Valentina medici Department of Internal medicine Division of Gastroenterology and HepatologyUniversity of CaliforniaDavisCAUSA

Environmental factors,including diet,exercise,stress,and toxins,profoundly impact disease *** review examines how Wilson disease(WD),an autosomal recessive genetic disorder,is influenced by genetic and environmental *** is caused by mutations in the copper-transporter gene ATP7B,leading to the accumulation of copper in the liver and brain,resulting in hepatic,neurological,and psychiatric *** symptoms range in severity and can first appear anytime between early childhood and old *** 300 disease-causing mutations in ATP7B have been identified,but attempts to link genotype to the phenotypic presentation have yielded little insight,prompting investigators to identify alternative mechanisms,such as epigenetics,to explain the highly varied clinical ***,WD is accompanied by structural and functional abnormalities in mitochondria,potentially altering the production of metabolites that are required for epigenetic regulation of gene ***,environmental exposure affects the regulation of gene expression and mitochondrial *** present the“multi-hit”hypothesis of WD progression,which posits that the initial hit is an environmental factor that affects fetal gene expression and epigenetic mechanisms and subsequent“hits”are environmental exposures that occur in the offspring after *** environmental hits and subsequent changes in epigenetic regulation may impact copper accumulation and ultimately WD *** changes,including diet,increased physical activity,stress reduction,and toxin avoidance,might influence the presentation and course of WD,and therefore may serve as potential adjunctive or replacement therapies.

关键词： Wilson disease modifier gene Epigenetics mitochondria

Keratinized Nuptial Spines Are Used for male Combat in the Emei moustache Toad(Leptobrachium boringii)

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Asian Herpetological Research 2011年第3期2卷 142-148页

作者： cameron m. HUDSON Xianjin HE Jinzhong FU Department of Integrative Biology University of Guelph50 Stone Road East College of Life Science and Technology Southwest University for Nationalities

We describe the natural history and reproductive behaviour of the Emei moustache Toad(Leptobrachium boringii) with an emphasis on the development of keratinized nuptial spines in males and document combat behaviour for the first time in this species. Between February and march of 2011, 19 female and 43 male L. boringii from mount Emei UNESCO World Heritage Site, Sichuan, China were observed throughout the breeding season. This species exhibits male-biased sexual size dimorphism(SSD) with limited evidence of paternal care(nest guarding by males). Prior to the breeding season males grow 10 – 16 keratinized spines on their upper lip, which fall off once the season has ended. Throughout the breeding season males construct and defend aquatic nests where they produce advertisement calls to attract females. During this time we documented 14 cases involving a total of 22 males where males used their moustaches for aggressive interaction. Combat typically occurred at the beginning of the season when males would compete for a limited number of available nest sites. Neither male body size, nor body condition significantly affects the outcome of an aggressive interaction, suggesting that size may not be the only factor influencing an individual’s chance of victory. Our evidence for male competition and aggression, along with observed paternal care are potential mechanisms to explain the evolution of male-biased SSD observed in this species.

关键词： reproductive behaviour territoriality Leptobrachium boringii secondary sexual characters

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In vitro angiogenesis in response to biomaterial properties for bone tissue engineering:a review of the state of the art

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Regenerative Biomaterials 2023年第1期10卷 744-783页

作者： Else Ellermann Nima meyer Ruth E.cameron Serena m.Best Department of materials Science and metallurgy University of CambridgeCambridge CB30FSUK

Bone tissue engineering(BTE)aims to improve the healing of bone fractures using scaffolds that mimic the native extracellular *** successful bone regeneration,scaffolds should promote simultaneous bone tissue formation and blood vessel growth for nutrient and waste ***,a significant challenge in regenerative medicine remains the development of grafts that can be vascularized *** other things,optimization of physicochemical conditions of scaffolds is key to achieving appropriate angiogenesis in the period immediately following *** phosphates and collagen scaffolds are two of the most widely studied biomaterials for BTE,due to their close resemblance to inorganic and organic components of bone,respectively,and their bioactivity,tunable biodegradability and the ability to produce tailored *** various strategies exist to enhance vascularization of these scaffolds in vivo,further in vitro assessment is crucial to understand the relation between physicochemical properties of a biomaterial and its ability to induce *** mono-culture studies can provide evidence regarding cell-material interaction of a single cell type,a co-culture procedure is crucial for assessing the complex mechanisms involved in angiogenesis.A co-culture more closely resembles the natural tissue both physically and biologically by stimulating natural intercellular interactions and mimicking the organization of the in vivo ***,a co-culture is a complex system requiring optimization of various parameters including cell types,cell ratio,culture medium and seeding *** fundamental knowledge of the mechanism behind the bioactivity of biomaterials and understanding the contribution of surface and architectural features to the vascularization of scaffolds,and the biological response in general,can provide an invaluable basis for future optimization *** review gives an overview of the

关键词： angiogenesis collagen scaffolds hydroxyapatite co-culture architectural features physicochemical properties

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The omentum

World Journal of Gastroenterology 2000年第2期6卷 169-176页

作者： cameron Platell Deborah Cooper John m.Papadimitriou John C.Hall Department of Surgery the University of Western Australia Departments of Pathology the University of Western Australia

INTRODUCTIONThe word omentum derives from the ancientEgyptians who,when embalming human bodies,used to assess their'omens'by looking at thevariations in what we recognise today as ***(128-199 AD)thought that therole of the omentum was to warm the *** was on the basis of a gladiator who had anomental resection after a stab injury and sufferedgreatly from cold for the rest of his life.A

关键词： omentum peritonitis macrophage neutrophil lymphocytes mesothelium adhesions omentectomy

EFFECT OF mOLYBDENUm PROmOTER ON THE Cu-Co BASED CATALYSTS

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Journal of Energy Chemistry 1995年第1期 1-11页

作者： kieffer R.,KIENNEmANN A. Laboratuire de Chimie Organique Appliquee EHICS I rue Blaise Pascal 67008 Strasbourg France Laboratuire de Chimie Organique Appliquee EHICS I rue Blaise Pascal 67008 Strasbourg France

The synthesis of mixed alcohols (C1-C5) from syngas has been studied at 6. 0 mPa over modified Co/CuLaZr catalysts. The molybdenum addition enhanced greatly the activity and the selectivity to alcohols. The improvement of hydrogenation capacity of the system via a reversible spillover effect of hydrogen could explain this effect, together with a great capacity of CO insertion, illustrated by the effect of C2H4 addition as a probe to syngas. Under our experimental conditions, a mixed alcohol production of 147.1g/kg. cat/h containing a proportion of 33. 1% of higher alcohols (C2+OH) was obtained with a selectivity to ROH of 52. 8%.

关键词： syngas conversion alcohol synthesis copper-cobalt catalysts molybdenum promoter probe molecule tests

Adjusting the physico-chemical properties of collagen scaffolds to accommodate primary osteoblasts and endothelial cells

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Regenerative Biomaterials 2023年第1期10卷 590-602页

作者： Nima meyer Daniel V.Bax Jochen Beck Ruth E.cameron Serena m.Best Department of materials Science and metallurgy University of CambridgeCambridge CB30FSUK Geistlich Pharma AG Product DevelopmentWolhusenSwitzerland

Collagen-based biomaterials are used widely as tissue engineering scaffolds because of their excellent bioactivity and their similarity to the natural *** regeneration of healthy bone tissue requires simultaneous support for both osteoblasts and,where angiogenesis is intended,endothelial *** it is important to tailor carefully the biochemical and structural characteristics of the scaffold to suit the needs of each cell *** work describes for the first time a systematic study to gain insight into the cell type-specific response of primary human osteoblast(hOBs)and human dermal microvascular endothelial cells(HDmECs)to insoluble collagen-based *** behaviour was evaluated on both 2D films and 3D scaffolds,produced using *** collagen was cross-linked at various EDC/NHS concentrations and mono-cultured with hOBs and HDmECs to assess the effect of architectural features and scaffold stabilization on cell *** was observed that 3D scaffolds cross-linked at 30%of the standard conditions in literature offered an optimal combination of mechanical stiffness and cellular response for both cell types,although endothelial cells were more sensitive to the degree of cross-linking than *** features have a time-dependent impact on the cell migration profile,with alignment being the most influential parameter overall.

关键词： angiogenesis collagen scaffolds cell migration EDC/NHS cross-linking

Arthroscopic treatment options for irreparable rotator cuff tears of the shoulder

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World Journal of Orthopedics 2014年第5期5卷 557-565页

作者： cameron m Anley Samuel KL Chan martyn Snow Arthros-copy Division The Royal Orthopaedic Hospital

The management of patients with irreparable rotator cuff tears remains a challenge for orthopaedic surgeons with the final treatment option in many algorithms being either a reverse shoulder arthroplasty or a tendon transfer. The long term results of these procedures are however still widely debated, especially in younger patients. A variety of arthroscopic treatment options have been proposed for patients with an irreparable rotator cuff tear without the presence of arthritis of the glenohumeral joint. These include a simple debridement with or without a biceps tenotomy, partial rotator cuff repair with or without an interval slide, tuberplasty, graft interposition of the rotator cuff, suprascapular nerve ablation, superior capsule reconstruction and insertion of a biodegradable spacer(Inspace) to depress the humeral head. These options should be considered as part of the treatment algorithm in patients with an irreparable rotator cuff and could be used as either as an interim procedure, delaying the need for more invasive surgery in the physiologically young and active, or as potential definitive procedures in the medically *** aim of this review is to highlight and summarise arthroscopic procedures and the results thereof currently utilised in the management of these challenging patients.

关键词： Irreparable Arthroscopy Rotator cuff Repair massive