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91.
Michał Horodecki Paweł Horodecki Ryszard Horodecki 《Open Systems & Information Dynamics》2006,13(1):103-111
Recently, a powerful separability criterion was introduced by O. Rudolf in [5] and by K. Chen et al. in [6] – basing on realignment of elements of density matrix. Composing the main idea behind the above criterion and the
necessary and sufficient condition in terms of positive maps, we provide a characterization of separable states by means of
linear contractions. The latter need not be positive maps. We extend the idea to multipartite systems, and find that, somewhat
suprisingly, partial realigment (unlike partial transposition) can detect genuinely tri-parite entanglement. We generalize
it by introducing a family of so called permutation separability criteria for multipartite states. Namely, any permutation of indices of density matrix written in product basis leads to a separability
criterion. Partial transpose and realignment criterion are special cases of permutation criteria.
An early version of the present paper has appeared in e-print archive as quant-ph/0206008. The premutation criterion has been
then further developed in [23, 24, 25], where the problem of classification of inequivalent permutation criteria has been
investigated. 相似文献
92.
Anthony R. de Souza Michael R. Greenberg Ben-chieh Liu Karol J. Krotki Sallie A. Marston Ashok K. Dutt Yuk Lee David F. Batten Timothy J. Finan J. H. Holmes Brenton M. Barr Ryszard Domanski Victoria A. Lawson Dean M. Hanink Clarence G. Ray Saleem Mohammad Clyde Weaver Richard E. Caves Luis Suarez-Villa Dean Forbes Brenda J. Moscove Leland R. Pederson Nolin Masih Thomas A. Reiner Noel D. Uri Sidney R. Jumper Charles G. Schmidt James J. Parsons James T. Peach W. Donald McTaggart Daniel J. Fairbanks Peggy Evans Rutherford H. Platt 《The Annals of Regional Science》1987,21(3):126-187
93.
Marc Termote H. St. Seidenfus Ruth Shen Dale R. Schmeichel R. Keith Semple Lay James Gibson Ryszard Domanski Michael F. Sheehan Josephine Olu Abiodun A. M. Fuller Turgut Var Diane J. Martz Douglas M. Brown Peter Cowan James L. Mulvihill Tom Rijerkerk Konrad Dramowicz Roger F. Riefler C. J. Robertson Bernard Malamud Rudolf Andorka James L. LeBeau J. C. Stabler Wilbur R. Maki Jan S. Kowalski Nigel Thrift Richard W. Lichty Dr. Andre Simmons Raimund K. Herz Donald Jones Kurt Puchinger J. Barry Riddell R. Ross MacKay Noel D. Uri Peter Boothroyd John F. Jakubs Peter M. Schulze P. N. Mathur 《The Annals of Regional Science》1985,19(2):100-157
94.
J. Honke Halina Kozowska Concepcion Vidal-Valverde Juana Frias Ryszard Górecki 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1998,206(4):279-283
The changes in the quantities of inositol phosphates during the maturation and germination of pea, faba bean and lupin seeds
were determined in two consecutive (1993 and 1994) years of differing weather conditions. Irrespective of the year, all seeds
accumulated predominantly inositol hexaphosphate (IP6). The weather conditions influenced the accumulation of inositol phosphates in maturing seeds, but they did not influence
the total content. Gradual degradation of inositol phosphates occurred during seed germination. After 8 days of germination,
IP6 was degraded by some 80% in peas, 78% in faba beans and 42% in lupin seeds. The enzymic hydrolysis of higher forms of inositol
phosphates (IP6 and IP5) in germinating seeds was assumed to yield inositol tetraphosphate (IP4) and inositol triphosphate (IP3), because the quantities of these compounds increased during seed germination.
Received: 1 August 1997 / Revised version: 13 October 1997 相似文献
95.
Boguslaw Bieda Ryszard Tadeusiewicz 《International Transactions in Operational Research》2008,15(1):103-119
Life Cycle Inventory (LCI) – part of a Life Cycle Assessment (LCA) method – was used to evaluate two scenarios for waste to energy gasification plants based on the American (design at 200 T/D) and Australian (design at 240 T/D) gasification technologies including a 15‐year income statement projection. The paper uses stochastic modeling based on the internal rate of return (IRR) and net present value (NPV) values of the new and actual equipment. The Monte Carlo simulation with the Excel spreadsheet and Crystal Ball® software was used to develop scenarios for uncertainty inputs. The sensitivity analysis and frequency charts represent the Crystal Ball® output and simulation results. 相似文献
96.
New calcium‐free Na2O–Al2O3–P2O5 bioactive glasses with potential applications in bone tissue engineering
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Oliwia Jeznach Marcin Gajc Karolina Korzeb Andrzej Kłos Krzysztof Orliński Ryszard Stępień Małgorzata Krok‐Borkowicz Łucja Rumian Krzysztof Pietryga Katarzyna Reczyńska Elżbieta Pamuła Dorota A. Pawlak 《Journal of the American Ceramic Society》2018,101(2):602-611
Sodium aluminophosphate glasses were evaluated for their bone repair ability. The glasses belonging to the system 45Na2O–xAl2O3‐(55‐x)P2O5, with x = (3, 5, 7, 10 mol%) were prepared by a melt‐quenching method. We assessed the effect of Al2O3 content on the properties of Na2O–Al2O3–P2O5 (NAP) glasses, which were characterized by density measurements, DSC analyses, solubility, bioactivity in simulated body fluid and cytocompatibility with MG‐63 cells. To the best of our knowledge, this is the first investigation of calcium‐free Na2O–Al2O3–P2O5 system glasses as bioactive materials for bone tissue engineering. 相似文献
97.
Pawel Peczkowski Piotr Szterner Zbigniew Jaegermann Marcin Kowalik Ryszard Zalecki Wieslaw Marek Woch 《Journal of Superconductivity and Novel Magnetism》2018,31(9):2719-2732
This article details the solid-state synthesis of high-temperature superconducting YBa2Cu3O7?x. Tests were carried out on samples formed at different pressures (200, 400, 600 and 800 MPa) before being annealed under pure oxygen. The X-ray diffraction method showed that, regardless of the forming pressure, the samples contain about 97 wt.% of Y-123 phase. SEM images showed a polycrystalline structure of samples of similar grain size and number of pores (intergranular spaces). The values of critical temperatures (Tc0), determined from magnetoresistance measurements, are about 91.5 K for all samples, and the Tc0 temperatures do not depend on sample-forming pressure. Magnetoresistance measurements have shown that samples formed with higher pressures exhibit smaller changes in Tc0 and superconducting transition width ΔT due to the influence of the HDC magnetic field, than the samples formed with lower pressures. Values of specific resistance determined by the use of van der Pauw method at 300 K is about 2 mΩcm for all samples. The critical temperatures (T cintra) of grains and critical current densities at 77 K were determined from AC magnetic susceptibility measurements, and they are about 91.6 K and 400 A cm?2, respectively. 相似文献
98.
Joanna Mystkowska Magdalena Mazurek-Budzyńska Ewelina Piktel Katarzyna Niemirowicz Wojciech Karalus Piotr Deptuła Katarzyna Pogoda Dawid Łysik Jan Ryszard Dąbrowski Gabriel Rokicki Robert Bucki 《Journal of Polymer Research》2017,24(9):144
Selected mechanical and biological properties of biodegradable elastomeric poly(ester-carbonate-urea-urethane)s (PECUUs) point towards their potential to be applied as scaffolds in tissue engineering. Here we explore their medical applicability taking into account their hemocompatibility and cytotoxicity. The influence of the ester monomer (derivatives of adipic and succinic acids), as well as diisocyanate type (IPDI and HDI) on the investigated PECUUs properties is presented. The presence of aliphatic diisocyanates, cyclic IPDI or linear HDI, governs the adhesion of Candida cells to these polymers offering the possibility to control the biofilm formation on their surface. In comparison to the linear form, cyclic diisocyanates with pentamethylene succinate or adipate fragments had two to three times lower biofilm mass formation on their surface. Reduced hemoglobin release from red blood cells observed during incubation of tested polymers with human erythrocytes suspension indicates their potential biocompatibility with human tissues. PECUUs were also able to support the growth of human keratinocytes HaCaT on their surface when coated with collagen. In effect, IPDI derivatives might possess a high potential for use in biomedical applications. 相似文献
99.
Ryszard Steller Ewa Micewicz Wanda Meissner Jacek Piglowski Jzef Haponiuk 《应用聚合物科学杂志》2006,99(4):1872-1879
Blends of aliphatic polyamides (PA6, PA66, and PA12), containing 0–15 wt % nonepoxidized or epoxidized elastomers (statistical copolymer butadiene–styrene BS/EBS or linear block copolymer styrene–butadiene–styrene SBS/ESBS) were investigated. For PA6‐elastomer blends, taken as an example, it was shown that with increasing blending time, mechanical properties of blends increase, especially, if ESBS copolymer is used. It can be treated as an indirect sign of reactions between components. It was also found that in blends considerable changes of glass temperatures of components occur. Polyamides in blends with elastomers have smaller heats of fusion in comparison with virgin polyamides. It testifies to hindering of PA crystallization by elastomers. In some cases, significant shifts of melting points are also observed. Measurements of water contact angle show that all blends have very similar values of contact angles, which are lower than those of virgin polyamides. Elastomer content does not also affect the blend water uptake. However, it depends on the polyamide and elastomer type contrary to contact angle. Highest water uptake changes are observed in blends of PA66, especially for epoxidized elastomers. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1872–1879, 2006 相似文献
100.
Ryszard Petela 《Fuel》1984,63(3):419-422
The exergy balance equation for liquid atomization is discussed and exergetic efficiency of atomization is defined. On the basis of data taken from the literature some calculations of this efficiency have been carried out for the most widespread cases of atomization, i.e., for pressure and pneumatic atomization. The efficiency is low and does not exceed 1%. Some recommendations about how to carry out the full analysis of all items of the exergetic balance have been made. The results of such an analysis would give some indication of possible improvements in atomizer design and operating parameters. 相似文献