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111.
Adcox K Adler SS Ajitanand NN Akiba Y Alexander J Aphecetche L Arai Y Aronson SH Averbeck R Awes TC Barish KN Barnes PD Barrette J Bassalleck B Bathe S Baublis V Bazilevsky A Belikov S Bellaiche FG Belyaev ST Bennett MJ Berdnikov Y Botelho S Brooks ML Brown DS Bruner N Bucher D Buesching H Bumazhnov V Bunce G Burward-Hoy J Butsyk S Carey TA Chand P Chang J Chang WC Chavez LL Chernichenko S Chi CY Chiba J Chiu M Choudhury RK Christ T Chujo T Chung MS Chung P Cianciolo V Cole BA D'Enterria DG 《Physical review letters》2002,88(19):192302
Two-pion correlations in square root[s(NN)] = 130 GeV Au+Au collisions at RHIC have been measured over a broad range of pair transverse momentum k(T) by the PHENIX experiment at RHIC. The k(T) dependent transverse radii are similar to results from heavy-ion collisions at square root[s(NN)] = 4.1, 4.9, and 17.3 GeV, whereas the longitudinal radius increases monotonically with beam energy. The ratio of the outwards to sidewards transverse radii (R(out)/R(side)) is consistent with unity and independent of k(T). 相似文献
112.
Adams J Aggarwal MM Ahammed Z Amonett J Anderson BD Arkhipkin D Averichev GS Badyal SK Bai Y Balewski J Barannikova O Barnby LS Baudot J Bekele S Belaga VV Bellwied R Berger J Bezverkhny BI Bharadwaj S Bhasin A Bhati AK Bhatia VS Bichsel H Billmeier A Bland LC Blyth CO Bonner BE Botje M Boucham A Brandin AV Bravar A Bystersky M Cadman RV Cai XZ Caines H Calderón de la Barca Sánchez M Castillo J Cebra D Chajecki Z Chaloupka P Chattopadhyay S Chen HF Chen Y Cheng J Cherney M Chikanian A 《Physical review letters》2005,94(6):062301
Midrapidity open charm spectra from direct reconstruction of D0(D0)-->K-/+pi+/- in d+Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at squareroot[sNN]=200 GeV are reported. The D0(D0) spectrum covers a transverse momentum (pT) range of 0.1相似文献
113.
Hamidreza Alemohammad Ehsan Toyserkani Christ P. Paul 《Optics and Lasers in Engineering》2007,45(10):1010-1017
To realize the concept of smart tools, embedding of fiber optic sensors in the metallic structure of a cutting tool with combined laser solid freeform fabrication (LSFF) and moulding is presented in this paper. Metallic parts with embedded optical fiber sensors are capable of monitoring physical parameters like force and temperature. These sensors are advantageous relative to other conventional electric and electromagnetic sensors due to their light weight, immunity to external electromagnetic fields, small size, long-term durability, and long-range linearity. In the present work, the optical fibers (e.g., fiber Bragg grating sensor, single-mode fiber optics) are moulded under tensile forces within a mild steel casing filled by Sn–Pb to fabricate a protective layer around them. Afterwards, LSFF is utilized to deposit tungsten carbide reinforced in cobalt (WC–Co) on the surface of the mild steel component. The performance results, in which the sensor exposed to a light bandwidth, show that the maximum light power loss after embedding is about 21% implying that the fiber is not damaged during the embedding process. Also, the sensor output has a linear characteristic under compression loadings indicating that the debonding of the fiber from the protective layer is not probable. The produced samples are examined by scanning electron microscopy and X-ray diffraction to assess the physical properties of the tool. Microstructural images reveal no cracks and porosity around the fiber indicating a good bonding between the fiber and the surrounding media. Material characterizations of the manufactured tool are also discussed. 相似文献
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115.
Jonathan Bennett Anthony Carbery Michael Christ Terence Tao 《Geometric And Functional Analysis》2008,17(5):1343-1415
We consider the Brascamp–Lieb inequalities concerning multilinear integrals of products of functions in several dimensions.
We give a complete treatment of the issues of finiteness of the constant, and of the existence and uniqueness of centred gaussian
extremals. For arbitrary extremals we completely address the issue of existence, and partly address the issue of uniqueness.
We also analyse the inequalities from a structural perspective. Our main tool is a monotonicity formula for positive solutions
to heat equations in linear and multilinear settings, which was first used in this type of setting by Carlen, Lieb, and Loss
[CLL]. In that paper, the heat flow method was used to obtain the rank-one case of Lieb’s fundamental theorem concerning exhaustion
by gaussians; we extend the technique to the higher-rank case, giving two new proofs of the general-rank case of Lieb’s theorem.
Received: September 2005 Revision: November 2005 Accepted: November 2005 相似文献
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118.
A simulation model for damage evolution in slip bands under VHCF condition is presented. By use of a numerical method it is applied to a real simulated microstructure of AISI304. It considers orientations of slip systems as well as individual anisotropic elastic properties in each grain. The numerical method is the two-dimensional boundary element method which is based on two integral equations and implies fundamental solutions for anisotropic elastic solids. (© 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
119.
Tobias Christ D?m?t?r Pálv?lgyi Milo? Stojakovi? 《Discrete and Computational Geometry》2012,47(4):691-710
We introduce a novel and general approach for digitalization of line segments in the plane that satisfies a set of axioms
naturally arising from Euclidean axioms. In particular, we show how to derive such a system of digital segments from any total
order on the integers. As a consequence, using a well-chosen total order, we manage to define a system of digital segments
such that all digital segments are, in Hausdorff metric, optimally close to their corresponding Euclidean segments, thus giving
an explicit construction that resolves the main question of Chun et al. (Discrete Comput. Geom. 42(3):359–378, 2009). 相似文献
120.
Jean-Marc Montel Benoit Glorieux Richard Wirth 《Journal of Physics and Chemistry of Solids》2006,67(12):2489-2500
Various geological arguments suggest that monazite can be an interesting waste-form for actinides such as Np, Pu, Cm and Am. We set up a simple procedure for making dense pellets of monazite-brabantite solid-solution ceramics with composition Ca0.092Th0.092Ce0.089La0.727PO4. It consists of co-milling CaCO3, ThO2, CeO2, La2O3, and NH4H2PO4, 1250 °C calcination, milling, cold-pressing, and sintering at 1450 °C for 4 h. X-ray investigations showed that the reaction scheme from oxides to monazite is complex and involves various P+La-based intermediate compounds. The final density of the the product is around 95% of the theoretical density. The texture is homogeneous with a typical grain of size 5-20 μm. This process is designed to be adapted to hot cells and telemanipulators. 相似文献