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A Stable, Wideband Tunable, Near Transform-Limited, Graphene- Mode-Locked, Ultrafast Laser

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Nano Research 2010年第9期3卷 653-660页

作者： Zhipei Sun daniel Popa Tawfique Hasan Felice Torrisi Fengqiu Wang Edmund J.R.Kelleher John c.Travers Valeria Nicolosi Andrea c.Ferrari department of Engineering University of CambridgeCambridge CB30FAUK Physics department Imperial CollegeLondon SW72AZUK department of Materials University of OxfordOxford OX13PHUK

We report an ultrafast laser mode-locked with a graphene saturable *** linear dispersions of the dirac electrons in graphene enable wideband *** get-1 ps pulses,tunable between 1525 and 1559 nm,with stable mode-lockin... 详细信息

关键词： Graphene saturable absorber mode-locking fiber laser

Inflammatory bowel disease serology in Asia and the West

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World Journal of Gastroenterology 2013年第37期19卷 6207-6213页

作者： Lani Prideaux Michael A Kamm Peter de cruz daniel R van Langenberg Siew c Ng Iris dotan department of Gastroenterology St Vincent’s HospitalFitzroy 3065MelbourneAustralia department of Medicine University of Melbourne department of Medicine Imperial College department of Gastroenterology Box Hill Hospital department of Medicine and Therapeutics Chinese University of Hong Kong Inflammatory Bowel disease center Department of GastroenterologySourasky Medical Center

AIM:To study serological antibodies in caucasians and Asians,in health and inflammatory bowel disease(IBd),in Australia and Hong Kong(HK).METHOdS:Anti-glycan antibodies[anti-chitobioside(AccA),anti-laminaribioside(ALcA)],and anti-mannobioside(AMcA),anti-Saccharomyces cervisiae(gAScA);and atypical perinuclear anti-neutrophil cytoplasmic antibody(pANcA)were tested in IBd patients,their unaffected relatives,and healthy controls in Australia and HK(china).Antibody status(positive or negative)and titre was compared between subjects of different geography,ethnicity and disease ***:Ninety subjects were evaluated:21 crohn’s disease(cd),32 ulcerative colitis(Uc),29 healthy controls,and 8 IBd patient *** eight subjects were Australian(29 caucasian and 19 ethnic Han chinese)and 42 were from HK(all Han chinese).caucasian cd patients had a significantly higher antibody prevalence of gAScA(67%vs 3%,PcA(44%vs 6%,P=0.005),and AMcA(67%vs 15%,P=0.002),whereas HK cd patients had a higher prevalence of only AMcA(58%vs 25%,P=0.035),when compared with Uc and healthy subjects in both *** cd had significantly higher gAScA prevalence(67%vs 0%,Pd titre(median59 vs 9,P=0.002)than HK cd *** and titres of ALcA,AccA and AMcA did not differ between cd in the two *** of at least one antibody was higher in caucasian than HK cd patients(100%vs 58%,P=0.045).pANcA did not differ between countries or ***:Serologic cd responses differ between HK Asian and Australian caucasian *** genetic,environmental or disease pathogenic factors may account for these differences.

关键词： crohn’s disease Ulcerative colitis Serological antibodies Asia Ethnic Anti-Saccharomyces cervisiae antibodies Anti-chitobioside antibodies Antilaminaribioside antibodies Anti-mannobioside antibodies Atypical perinuclear anti-neutrophil cytoplasmic antibodies

An experimental and theoretical investigation of a small,high aspect-ratio,free-piston,two-stroke engine

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Propulsion and Power Research 2020年第4期9卷 326-343页

作者： chiluwata E.Lungu Mael disseau daniel c.Stubbs Jechiel Jagoda david E.Scarborough General Electric company GreenvilleSouth Carolina29615USA Georgia Institute of Technology AtlantaGeorgia30332USA Truett Mcconnel University ClevelandGeorgia30528USA Auburn University AuburnAlabama36849USA

This paper presents a design for a novel,palm sized,high-aspect-ratio *** simplify fabrication and keep the device unobtrusive,a design incorporating a two-cycle engine having a flat,rectangular piston with spring return was *** experimental engine based on this concept producing a significant amount of useful work was *** results were encouraging,this geometry raised many issues to be investigated and resolved,including the effects of piston sealing,scavenging,heat losses,and combustion *** to the complex interplay between these effects,experimental investigation was time consuming and simple models were found to be ***,a more complex theoretical model accounting for these effects was developed and used to evaluate the sensitivity of engine performance to each of these *** predictions of this model were used to develop recommendations for improving the experimentally developed engine.

关键词： Micro-combustion Power generation Free-piston engine Internal combustion engine Palm power

Hermite-discontinuous Galerkin Overset Grid Methods for the Scalar Wave Equation

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communications on Applied Mathematics and computation 2021年第3期3卷 391-418页

作者： Oleksii Beznosov daniel Appel department of Mathematics and Statistics The University of New Mexico1 University of New MexicoMSC011115AlbuquerqueNM 87131Mexico department of Applied Mathematics University of ColoradoUniversity of Colorado 526 UCBBoulderCO 80309USA

We present high order accurate numerical methods for the wave equation that combines efficient Hermite methods with geometrically flexible discontinuous Galerkin methods by using overset *** boundaries we use thin boundary fitted curvilinear grids and in the volume we use cartesian grids so that the computational complexity of the solvers approaches a structured cartesian Hermite *** many other overset methods we do not need to add artificial dissipation but we find that the built-in dissipation of the Hermite and discontinuous Galerkin methods is sufficient to maintain the *** numerical experiments we demonstrate the stability,accuracy,efficiency,and the applicability of the methods to forward and inverse problems.

关键词： Wave equation Overset grids High order Hermite methods discontinuous Galerkin methods

Ultrasonically Assisted cutting of Histological Sections for Reducing the Environmental and Financial Impact of Microtomy

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chinese Journal of Mechanical Engineering 2022年第3期35卷 200-206页

作者： dong Wang daniel de Becker Anish Roy Wolfson School of Mechanical and Manufacturing Engineering Loughborough UniversityLoughborough LE113TUUK department of Engineering College of EngineeringMathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK

Modern-day microtomy requires high precision equipment to thinly section biological *** sectioned tissue must be of good quality not showing cutting tracks or so-called *** quality of these sections is dependent on the blade wear,which is related to the hardness of the tissue sample,cutting angle and cutting speed.A test rig has been designed and manufactured to allow these parameters to be *** has allowed for the blade wear to be analysed and quantified,and this has been completed for both ultrasonically assisted and conventional *** obtained results showed a 25.2%decrease in average blade roughness after 38 cuts when using the ultrasonically assisted cutting *** data also showed no adverse effect on the quality of the slides produced when using this cutting ***,the cutting force measured for both cutting regimes showed that ultrasonically assisted cutting required less force compared to conventional *** the reduction of surface roughness and force,it is possible to state that ultrasonically assisted cutting reduces the wear of the blade,thereby increasing the life of the *** increase of just 10%in blade life would yield a cost saving of approximately 25%thereby reducing the environmental and financial impact of microtomy.

关键词： Microtome Ultrasonically assisted cutting Blade wear

Introduction to programming with c++ 英文影印版

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p-capitulation over Number Fields with p-class Rank Two

丛书名：经典原版书库

2008年

作者： (美) y. daniel Liang

本书首先帮助学生循序渐进地学习所有必需和重要的基本概念, 然后再进入到面向对象程序设计方法的学习, 最终掌握构建具有异常处理和输入输出功能的有意义的应用程序的方法。

ISBN: (纸本)9787894826473;9787111239963

关键词： c++ (computer program language)

来源：畅想之星图书光盘版（南... 评论

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Journal of Applied Mathematics and Physics 2016年第7期4卷 1280-1293页

作者： daniel c. Mayer Graz Austria

Theoretical foundations of a new algorithm for determining the p-capitulation type ù(K) of a number field K with p-class rank ?=2 are presented. Since ù(K) alone is insufficient for identifying the second p-class group G=Gal(Fp2K∣K) of K, complementary techniques are deve- loped for finding the nilpotency class and coclass of . An implementation of the complete algorithm in the computational algebra system Magma is employed for calculating the Artin pattern AP(K)=(τ (K),ù(K)) of all 34631 real quadratic fields K=Q(√d) with discriminants 0d8 and 3-class group of type (3, 3). The results admit extensive statistics of the second 3-class groups G=Gal(F32K∣K) and the 3-class field tower groups G=Gal(F3∞K∣K).

关键词： Hilbert p-class Field Tower Maximal Unramified Pro-p Extension p-capitulation of class Groups Real Quadratic Fields (3 3)

Artin Transfer Patterns on descendant Trees of Finite p-Groups

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Advances in Pure Mathematics 2016年第2期6卷 66-104页

作者： daniel c. Mayer Naglergasse 53 8010 Graz Austria

Based on a thorough theory of the Artin transfer homomorphism from a group G to the abelianization of a subgroup of finite index , and its connection with the permutation representation and the monomial representation of G, the Artin pattern , which consists of families , resp. , of transfer targets, resp. transfer kernels, is defined for the vertices of any descendant tree T of finite p-groups. It is endowed with partial order relations and , which are compatible with the parent-descendant relation of the edges of the tree T. The partial order enables termination criteria for the p-group generation algorithm which can be used for searching and identifying a finite p-group G, whose Artin pattern is known completely or at least partially, by constructing the descendant tree with the abelianization of G as its root. An appendix summarizes details concerning induced homomorphisms between quotient groups, which play a crucial role in establishing the natural partial order on Artin patterns and explaining the stabilization, resp. polarization, of their components in descendant trees T of finite p-groups.

关键词： Artin Transfer Kernel Type Target Type descendant Tree coclass Tree coclass Graph

Impact of vasculature damage on the outcome of spinal cord injury:a novel collagenase-induced model may give new insights into the mechanisms involved

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Neural Regeneration Research 2014年第20期9卷 1783-1786页

作者： Patrick Losey daniel c.Anthony Experimental Neuropathology Department of PharmacologyUniversity of OxfordOxfordUK

The deleterious effect of vasculature damage on the outcome of spinal cord injury has long been recognized, and numerous clinical studies have shown that the presence of hemorrhage into the spinal cord is directly associated with a poorer neurological outcome. Vascular damage leads to de- creased blood flow to the cord and the release of potentially toxic blood-borne components. Here we consider the mechanisms that may be contributing to hemorrhage-induced damage and discuss the utility of a new model of spinal cord hemorrhage, which was urgently required as most of our current understanding has been extrapolated from intracerebral hemorrhage studies.

关键词： spinal cord injury vasculature hemorrhage animal model collagenase stereotaxic microinjection