全文获取类型
收费全文 | 75篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
化学 | 34篇 |
晶体学 | 1篇 |
数学 | 21篇 |
物理学 | 21篇 |
出版年
2023年 | 1篇 |
2021年 | 1篇 |
2020年 | 5篇 |
2019年 | 1篇 |
2017年 | 2篇 |
2014年 | 2篇 |
2013年 | 4篇 |
2012年 | 4篇 |
2011年 | 1篇 |
2010年 | 4篇 |
2009年 | 2篇 |
2008年 | 3篇 |
2007年 | 2篇 |
2006年 | 5篇 |
2005年 | 4篇 |
2004年 | 5篇 |
2003年 | 1篇 |
2002年 | 2篇 |
2001年 | 2篇 |
1999年 | 2篇 |
1998年 | 6篇 |
1997年 | 2篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1991年 | 2篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1982年 | 2篇 |
1979年 | 3篇 |
1978年 | 1篇 |
排序方式: 共有77条查询结果,搜索用时 15 毫秒
51.
We consider a linear heat equation on a half line with an additive noise chosen properly in such a manner that its invariant measures are a class of distributions of Lévy processes. Our assumption on the corresponding Lévy measure is, in general, mild except that we need its integrability to show that the distributions of Lévy processes are the only invariant measures of the stochastic heat equation. 相似文献
52.
S. Yamasaki M. Iwakuma K. Funaki J. Kato T. Chikumoto K. Tanabe K. Nakao T. Izumi Y. Yamada Y. Shiohara T. Saito 《Physica C: Superconductivity and its Applications》2010,470(20):1316-1320
For near-future applications of REBa2Cu3O7 (REBCO) coated conductors to electric power cables, transformers and Superconducting Magnetic Energy Storage (SMES), the long taped wires with high performance in the transport properties have been designed and fabricated. Moreover, in order to drastically reduce AC losses in perpendicular field configuration, advanced multifilament YBCO coated conductors (MFYCCs) fabricated with technique of a laser scribing process have been also developed. In the present study, from engineering viewpoints to utilize such advanced conductors, we evaluated the transport and AC loss properties of short MFYCCs with a repaired part or a joint by a diffusion joint technique with the saddle-shaped pickup coil method. 相似文献
53.
Inokuma S Ide H Yonekura T Funaki T Kondo S Shiobara S Yoshihara T Tobita S Nishimura J 《The Journal of organic chemistry》2005,70(5):1698-1703
[2.n](2,6)Pyridinocrownophanes (3a-e) were efficiently prepared by intramolecular [2 + 2] photocycloaddition of vinylpyridine derivatives under irradiation using a 400-W high-pressure mercury lamp through a Pyrex filter. They were of cis-configuration with respect to the cyclobutane ring, which was proven by the specific methine proton NMR resonances at delta 3.98-4.08. From ESI-MS analysis 3a-e were found to form 1:1 complexes with Ag+ cation. In a liquid-liquid extraction, 3 showed the highest affinity toward Ag+ cation among several heavy metal nitrates. In this series, 3c possessing four ethereal oxygen atoms was found to show the highest Ag+ affinity, according to the liquid-liquid extraction and determination of stability constant with the cation. The photoreactivity of precursor vinylpyridines is discussed by the predictor gamma(r(c)) proposed by Caldwell. 相似文献
54.
Tadahisa Funaki 《Probability Theory and Related Fields》2003,126(2):155-183
We consider random evolution of an interface on a hard wall under periodic boundary conditions. The dynamics are governed
by a system of stochastic differential equations of Skorohod type, which is Langevin equation associated with massless Hamiltonian
added a strong repelling force for the interface to stay over the wall. We study its macroscopic behavior under a suitable
large scale space-time limit and derive a nonlinear partial differential equation, which describes the mean curvature motion
except for some anisotropy effects, with reflection at the wall. Such equation is characterized by an evolutionary variational
inequality.
Received: 10 January 2002 / Revised version: 18 August 2002 /
Published online: 15 April 2003
Mathematics Subject Classification (2000): 60K35, 82C24, 35K55, 35K85
Key words or phrases: Hydrodynamic limit – Effective interfaces – Hard wall – Skorohod's stochastic differential equation – Evolutionary variational
inequality 相似文献
55.
Tadahisa Funaki 《Probability Theory and Related Fields》1989,82(1):39-93
Summary The hydrodynamical behavior of one-dimensional scalar Ginzburg-Landau model with conservation law is investigated. The dynamics of the system is given by solving a stochastic partial differential equation. Under appropriate space-time scaling, a deterministic limit is obtained and the limit is described by a certain nonlinear diffusion equation.Dedicated to Professor Takeyuki Hida on his 60th birthday 相似文献
56.
Soh-ichi Kitoh Ko-Ki Kunimoto Norio Funaki Hitoshi Senda Akio Kuwae Kazuhiko Hanai 《Journal of chemical crystallography》2002,32(12):547-553
The crystal structures of (rac)- and (R)-4-phenyl-1,3-oxazolidine-2-thione (4-POT) have been determined by X-ray diffraction. The structure of (rac)-4-POT is monoclinic P21/n with a = 11.9096(9) Å, b = 5.9523(6) Å, c = 12.3563(8) Å, = 91.054(6)°, V = 875.8(1) Å3, and Z = 4. The structure of (R)-4-POT is orthorhombic P212121 with a = 7.7197(6) Å, b = 21.603(2) Å, c = 5.4613(9) Å, V = 910.8(2) Å3, and Z = 4. (rac)-4-POT and (R)-4-POT crystals are shown to have different hydrogen-bonding patterns. In the racemic crystals, the enantiomeric (R)- and (S)-4-POT molecules are connected to form a cyclic dimer via the N–H S hydrogen bond of the cis thioamide moiety [N Si 3.438(2) Å, N–H Si 176(2)° symmetry code: (i) 1 – x, 1 – y, 1 – z]. In the chiral (R)-4-POT crystals, the N–H S intermolecular hydrogen bond forms a zigzag chain around the twofold screw axis [N Sii 3.347(3) Å, N–H Sii 161(3)° symmetry code: (ii) 1/2 + x, 1/2 – y, 2 – z]. Observed difference of 46°C in the melting points between the (rac)-4-POT and (R)-4-POT crystals is correlated with difference in the crystal packing. Vibrational spectra of (rac)- and (R)-4-POT crystals are discussed both in the solid state and in solution. 相似文献
57.
Core‐shell protein cluster comprising a hemoglobin (Hb) in the center and human serum albumins (HSA) at the exterior, Hb‐HSA 3 cluster, is an artificial O2‐carrier designed for use as a red blood cell (RBC) substitute. Lyophilization of the Hb‐HSA 3 cluster solution ([Hb unit] = 5 g/dL) with sucrose and trehalose yielded stable pink powder, which can be stored for 2 years at 4°C. Addition of pure water to the powder regenerated the homogeneous solution. The O2‐binding properties and oxyHb rate have been unaltered during the storage period. Infrared spectroscopic studies revealed that the hydrogen bond between protein and sugar stabilizes three‐dimensional structure of the cluster. 相似文献
58.
In this paper we consider a model of an economy with a common pool resource. Under decreasing returns to scale, it is well-known
that no Nash equilibrium attains Pareto efficiency. We examine whether it is possible to achieve Pareto efficiency and avoid
the tragedy of the commons through cooperation among players. For that purpose, we use the notion of a game in partition function
form. Whether or not the core exists depends crucially on the expectations of each coalition regarding the coalition formation
of the outsiders. If each coalition has pessimistic expectations, then the core always exists, while if it has optimistic
expectations, the core may be empty.
Received: January 1998/Final version: November 1998 相似文献
59.
60.