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991.
Prognosis of severe ischemic heart disease with no indication of percutaneous coronary intervention or coronary artery bypass
grafting still remains poor. Extracorporeal shock wave therapy was introduced for medical therapy more than 20 years ago to
break up kidney stones. We have demonstrated that extracorporeal cardiac shock wave therapy at a low level of ~10% of energy
density that used for urinary lithotripsy treatment, effectively induces coronary angiogenesis and improves myocardial ischemia
in a porcine model of chronic myocardial ischemia in vivo. On the basis of the promising results in animal studies, we have
recently developed a new, non-invasive angiogenic therapy with low-energy shock waves for ischemic heart disease. Our extracorporeal
cardiac shock wave therapy improved symptoms and myocardial ischemia in patients with severe coronary artery disease. These
beneficial effects of the shock wave therapy persisted for at least 12 months. Importantly, no procedural complications or
adverse effects were noted. These results indicate that our extracorporeal cardiac shock wave therapy is an effective and
non-invasive treatment for ischemic heart disease. To further confirm the usefulness and safety of our SW therapy, we are
currently conducting the second clinical trial in a randomized and placebo-controlled manner.
相似文献
992.
In the atmospheric correction of satellite data in the visible and near-infrared bands, it is necessary to remove the adjacency effect due to the reflection from contiguous pixels. Evaluation of the influence of aerosol vertical distributions on the adjacency effect is done by calculating the single-scattering light intensity which, after the reflection at the ground surface, reaches the satellite sensor via a single scattering with a molecule or an aerosol particle. In the simulation, we assume aerosol vertical profiles similar to those used in the MODTRAN radiation transfer code, and those having a mixed layer with a uniform value of the aerosol extinction coefficient. We assume for the ground surface a simple model representing a border of land/sea surfaces. In spite of the single scattering approximation, it is confirmed that even if the optical thickness is the same, we have a larger adjacency effect when the extinction coefficient is large at higher altitudes. We also discuss the dependence of the adjacency effect on the aerosol optical thickness and that on the difference in the reflectances of the land and sea surfaces along the border. 相似文献
993.
Shigekazu Ito Hideaki Miyake Hiroki Sugiyama Masaaki Yoshifuji 《Heteroatom Chemistry》2005,16(5):357-360
Kinetically stabilized 2‐lithio‐1‐(2,4,6‐tri‐t‐butylphenyl)‐1‐phosphapropene was allowed to react with a bulky phosphaalkyne Mes*CP (Mes* = 2,4,6‐t‐Bu3C6H2) followed by quenching with iodomethane or benzyl bromide to give the corresponding 1,3‐diphosphabuta‐1,3‐dienes. The presence of the bulky Mes* group on the 1‐phosphorus atom prevents intramolecular [2+2] cyclization and gave the PC PC skeleton, whereas Mes*CP reacted with half an equivalent of nucleophile to afford the PCPC four‐membered ring compounds. X‐ray crystallography of 4‐benzyl‐1,3‐diphosphabuta‐1,3‐diene confirmed the molecular structure showing conjugation on the 1,3‐diphosphabuta‐1,3‐diene moiety. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:357–360, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20104 相似文献
994.
Reiko Saito Yoshiki Okuno Hiroaki Kobayashi 《Journal of polymer science. Part A, Polymer chemistry》2001,39(20):3539-3546
A novel template monomer with multiple methacryloyl groups was synthesized with β‐cyclodextrin by the acetylation of primary hydroxyl groups and the esterification of secondary hydroxyl groups with methacrylic acid anhydride. The average number of methacryloyl groups in the monomer was 11. The radical polymerization of the monomer was carried out with the following initiators: α,α′‐azobisisobutylonitrile, H2O2? Fe2+ redox initiator, p‐xylyl‐N,N‐dimethyldithiocarbamate (XDC), and α‐bromo‐p‐xylyl‐N,N‐dimethyldithiocarbamate (BXDC). When the concentration of the monomer was less than 4.12 × 10?3 M, polymerization was limited inside the molecule, and gelation of the system was hindered. For controlled radical photopolymerization with XDC and BXDC, the methacryloyl groups of the monomer were homogeneously polymerized, and poly(methacrylic acid) with a narrow molecular weight distribution was obtained by the hydrolysis of the polymerized products. © 2001 John Wiley & Sons, Inc. J Polym Sci Part A: Polym Chem 39: 3539–3546, 2001 相似文献
995.
Hidemi Nagao Yasuhito Ohta Takashi Yoshimoto Hiroaki Saito Jun Maki Hiroyuki Kawabe Koji Ohta Kiyoshi Nishikawa 《International journal of quantum chemistry》2001,84(6):686-693
We calculate the optical properties such as the polarization, the (hyper)polarizabilities, the critical vector potential, etc., in terms of the non‐Hermitian Anderson model of a 6‐site ring model. The dependence of the optical properties on the delocalization transition is investigated. It is found that all the total optical properties nonlinearly increase with the increase of the delocalization. © 2001 John Wiley & Sons, Inc. Int J Quantum Chem, 2001 相似文献
996.
High-speed counter-current chromatography was successfully applied to the large-scale separation of resveratrol, anthraglycoside A and anthraglycoside B from the crude extract of Polygonum cuspidatum Sieb. et Zucc using a two-phase solvent system composed of chloroform, methanol and water. Resveratrol, anthraglycoside A and anthraglycoside B were separated from multigram quantities (5 g) of crude extract of P. cuspidatum. The separation yielded 200 mg to 1 g of these three compounds each at over 98% purity as determined by HPLC. The chemical structures of these components were identified by nuclear magnetic resonance (NMR) and MS. 相似文献
997.
Kazuhiko Matsumoto Rika Hagiwara Yasuhiko Ito Osamu Tamada 《Journal of fluorine chemistry》2001,110(2):117-122
Structures of AgAF6 (A=Sb, Ta) have been determined by X-ray single crystal studies at ambient temperatures. AgSbF6 crystallizes in space group Ia
with a=979.85(4) pm, V=9.4076(12)×108 pm3, z=8, and AgTaF6 crystallizes in space group P42/mcm with a=499.49(4) pm, c=960.51(8) pm, V=2.3964(6)×108 pm3, z=2. Only the crystal system and cell parameters were obtained for the isomorphic AgNbF6; primitive tetragonal, a=497.80(10) pm, b=960.40(10) pm, V=2.3799(12)×108 pm3, z=2. The results of the Raman spectroscopy of AgAF6 support the obtained structures. The structures are discussed by comparing with that of AgPF6 and AgAsF6 which have recently been determined in a series of our study. 相似文献
998.
S Fukuzumi K Ohkubo H Imahori J Shao Z Ou G Zheng Y Chen R K Pandey M Fujitsuka O Ito K M Kadish 《Journal of the American Chemical Society》2001,123(43):10676-10683
The photochemical and electrochemical properties of four chlorin-C60 or porphyrin-C60 dyads having the same short spacer between the macrocycle and the fullerene are examined. In contrast with all the previous results on porphyrin-fullerene dyads, the photoexcitation of a zinc chlorin-C60 dyad results in an unusually long-lived radical ion pair which decays via first-order kinetics with a decay rate constant of 9.1 x 10(3) x s(-1). This value is 2-6 orders of magnitude smaller than values reported for all other porphyrin or chlorin donor-acceptor of the molecule dyad systems. The formation of radical cations of the donor part and the radical anion of the acceptor part was also confirmed by ESR measurements under photoirradiation at low temperature. The photoexcitation of other dyads (free-base chlorin-C60, zinc porphyrin-C60, and free-base porphyrin-C60 dyads) results in formation of the ion pairs which decay quickly to the triplet excited states of the chlorin or porphyrin moiety via the higher lying radical ion pair states as is expected from the redox potentials. 相似文献
999.
The rapid release from a double-compressed tablet containing theophylline as a core drug with the pH-dependent water-soluble polymers, Eudragit L100, S100 or L100-55 used as a wall material was suppressed by argon plasma-irradiation due to an effect of inter-segmental cross-link reactions on the decrease in the surface polymer solubility of outer layer. In addition, the rapid theophylline release from the double-compressed tablet of Eudragit L100-55 with a lower glass transition temperature (Tg) has converted into the delayed-release system under a set of plasma operational conditions due to an additional effect of plasma heat flux on softening of Eudragit L100-55 surface resulting in the formation of the film-like surface with a particle-particle interlinking of the outer layer. 相似文献
1000.
Hiroaki Umeda Shiro Koseki Umpei Nagashima Michael W. Schmidt 《Journal of computational chemistry》2001,22(12):1243-1251
The quasi‐degenerate multireference second‐order perturbation theory (MRMP2) routines in the GAMESS suite of program codes have been parallelized using a distributed data interface (DDI). Two typical kinds of molecules were chosen for examination of parallelization speedup using one to eight PCs gathered as a cluster and connected by Fast Ethernet. The first example, in which total energies of several low‐lying electronic states have been obtained for niobium monohydride, give parallelization speedup of 7.15 when eight PCs were used as a cluster. The second example is the ground‐state total energy for a medium sized molecule, 4a,4b,8a,9a‐tetrahydro‐pyridino[1′,2′‐4,3]imidazo‐lidino[1,5‐a]pyridine. When distributed memory is employed, the parallelization speedup improves to 6.84 for the MRMP2 calculations when an eight‐PC cluster is used. These results demonstrate that our efforts to achieve the parallelization of MRMP2 routines have been successful. © 2001 John Wiley & Sons, Inc. J Comput Chem 22: 1243–1251, 2001 相似文献