3,757 research outputs found
Low temperature vapor phase catalytic oxidation unit
Low temperature vapor phase catalytic oxidation unit for removing organics in urine distillatio
Assessment of the Thermal Conductivity of BN-C Nanostructures
Chemical and structural diversity present in hexagonal boron nitride ((h-BN)
and graphene hybrid nanostructures provide new avenues for tuning various
properties for their technological applications. In this paper we investigate
the variation of thermal conductivity () of hybrid graphene/h-BN
nanostructures: stripe superlattices and BN (graphene) dots embedded in
graphene (BN) are investigated using equilibrium molecular dynamics. To
simulate these systems, we have parameterized a Tersoff type interaction
potential to reproduce the ab initio energetics of the B-C and N-C bonds for
studying the various interfaces that emerge in these hybrid nanostructures. We
demonstrate that both the details of the interface, including energetic
stability and shape, as well as the spacing of the interfaces in the material
exert strong control on the thermal conductivity of these systems. For stripe
superlattices, we find that zigzag configured interfaces produce a higher
in the direction parallel to the interface than the armchair
configuration, while the perpendicular conductivity is less prone to the
details of the interface and is limited by the of h-BN. Additionally,
the embedded dot structures, having mixed zigzag and armchair interfaces,
affects the thermal transport properties more strongly than superlattices.
Though dot radius appears to have little effect on the magnitude of reduction,
we find that dot concentration (50% yielding the greatest reduction) and
composition (embedded graphene dots showing larger reduction that h-BN dot)
have a significant effect
Screening Legal Claims Based on Third-Party Litigation Finance Agreements and Other Signals of Quality
The advent of third-party litigation finance introduces a new gatekeeper to the legal process. Before deciding to lend money to a plaintiff, a litigation finance company will conduct at least some review and make an assessment of the quality of the case.Since litigation finance loans are generally nonrecourse, a litigation finance company is likely to refuse to loan money to plaintiffs with the weakest cases. Such voluntary claim screening may improve social welfare by reducing the incidence of frivolous claims. But the volume of frivolous claims may still be higher than it would be in a world without third-party litigation finance. In particular, third-party litigation finance companies, which lend money to litigants to enable them to pursue cases, might sometimes finance claims that would have a very low probability of prevailing at trial on the assumption that such claims may encourage nuisance settlements. This danger may be greater than when a plaintiff self-finances, because the provision of outside financing may help make credible a threat to proceed to trial in the absence of a settlement. This possibility makes the social welfare consequences of alternative litigation finance an empirical question. Surely, many financed claims will be meritorious, in the probabilistic sense that if the plaintiffs were to receive financing, they would be more likely than not to win at trial. It is uncertain, however, whether the beneficial economic effects of enabling such claims outweigh the negative effects of facilitating claims that courts are highly likely to reject. The answer may vary based on the type of claim or the type of litigation finance arrangement
Mass Handling of Watermelon Microcuttings
Modifications were made in the configurations of the unitizing, nonselective wire cutters used by Alper et al.(1992) for mass cuttings of Stage II Citrullus lanatus cv. Charlee (watermelon) plant tissue cultures to further enhance productivity. Mounting the cutter in an inverted position over the receiving vessel eliminated time required for filling. This cut-and-dump technique became 4.8 times more productive for the total transfer process than the conventional scalpel and forceps technique when both time and yield of cut segments with visible buds were considered. A concept for growing fewer, larger tissue clusters per vessel in mini-trays with orienting cells and cutting with correspondingly sized orientedcell wire cutters yielded as much tissue fresh weight as conventional agar vessels and afforded the potential to reduce time required for the removal job function with the cut-and-dump technique
Unitized, Nonselective Cutting of In Vitro Watermelon
Unitized, nonselective mass cutting of Stage II Citrullus lanatus cv. Charlee (watermelon) plant tissue cultures has been achieved with various configurations and sizes of wire cutter devices. Time studies revealed that the wire cutters increased the productivity of the cutting function over conventional scalpel and forceps by a factor of 14, Total transfer productivity, including the manual functions of removing tissue from an initial culture vessel and filling (sorting and placing cut tissue segments) new vessels, was increased by a factor of 1,8, The square grid-type cutting devices yielded from 48 to 59% as many viable bud clusters per culture vessel as hand cutting and from 65 to 95% as much tissue fresh weight. An oriented-cell configuration of wire cutter actually increased tissue fresh weight about 20% over hand cutting. The simplicity of construction and quality of material of the wire cutter render it readily autoclavable and highly flexible to function both as an aid to small operations and as an element in more sophisticated mechanical devices for larger operations
Octilinear Force-Directed Layout with Mental Map Preservation for Schematic Diagrams
We present an algorithm for automatically laying out metro map style schematics using a force-directed approach, where we use a localized version of the standard spring embedder forces combined with an octilinear magnetic force. The two types of forces used during layout are naturally conflicting, and the existing method of simply combining these to generate a resultant force does not give satisfactory results. Hence we vary the forces, emphasizing the standard forces in the beginning to produce a well distributed graph, with the octilinear forces
becoming prevalent at the end of the layout, to ensure that the key requirement of line angles at intervals of 45? is obtained. Our method is considerably faster than the more commonly used search-based approaches, and we believe the results are superior to the previous force-directed approach. We have further developed this technique to address the issues of dynamic schematic layout. We use a Delaunay triangulation to construct a schematic “frame”, which is used to retain relative node positions and permits full control of the level of mental map preservation.
This technique is the first to combine mental map preservation techniques with the additional layout criteria of schematic diagrams. To conclude, we present the results of a study to investigate the relationship between the level of mental map preservation and the user response time and accuracy
Kemik Erimesi Olan Hastalarda Omurga Rahatsızlıkları Tedavisinde Kullanılacak Yeni Bir Vida Tasarımı: Genişleyebilir Pedikül Vida
Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2015Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2015Osteoporoza bağlı vertebra (omur) sorununa çözüm üretmek için yeni bir genişleyebilir pedikül vida tasarlanmıştır. Tasarım SOLIDWORKS© programı kullanılarak yapılmıştır. Tasarlanan vidaya standartlara uygun olarak çekme, eğilme, burulma ve sıyırma testlerinin bilgisayarlı benzetimleri (simülasyonları) uygulanmış, yapılan analizlerin sonuçları, standartlarda ve daha önce yapılmış çalışmalarda bulunan değerlerle karşılaştırılmıştır. Analizler için ANSYS© sonlu elemanlar paket programı kullanılmıştır.In this study, a new “Expandable Pedicular Screw” is designed for use in osteoporosis vertebral patients’ treatments. Solid model of the screw is designed by using the SOLIDWORKS© program. In the light of the standards and the literature, tensile test, bending test, torsion test and peel test are simulated separately by using finite element analysis (FEA) program ANSYS©. Results of the analyses are discussed and compared with existing results
Effect of kinetic resonances on the stability of Resistive Wall Mode in Reversed Field Pinch
The kinetic effects, due to the mode resonance with thermal particle drift
motions in the reversed field pinch (RFP) plasmas, are numerically investigated
for the stability of the resistive wall mode, using a non-perturbative
MHD-kinetic hybrid formulation. The kinetic effects are generally found too
weak to substantially change the mode growth rate, or the stability margin,
re-enforcing the fact that the ideal MHD model is rather adequate for
describing the RWM physics in RFP experiments.Comment: Submitted to: Plasma Phys. Control. Fusio
Search for the onset of baryon anomaly at RHIC-PHENIX
The baryon production mechanism at the intermediate (2 - 5 GeV/) at
RHIC is still not well understood. The beam energy scan data in Cu+Cu and Au+Au
systems at RHIC may provide us a further insight on the origin of the baryon
anomaly and its evolution as a function of . In 2005 RHIC
physics program, the PHENIX experiment accumulated the first intensive low beam
energy data in Cu+Cu collisions. We present the preliminary results of
identified charged hadron spectra in Cu+Cu at = 22.5 and 62.4
GeV using the PHENIX detector. The centrality and beam energy dependences of
(anti)proton to pion ratios and the nuclear modification factors for charged
pions and (anti)protons are presented.Comment: 5 pages, 9 figures, proceedings for Hot Quarks 2006 workshop,
Villasimius, Sardinia, Italy, May 15 - 20, 2006. Proceedings of the
conference will be published in The European Physical Journal
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