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排序方式: 共有205条查询结果,搜索用时 15 毫秒
81.
Keisuke HIROTA Hiroo MATSUSE Shunji KOYA Ryuki HASHIDA Masafumi BEKKI Yoko YANAGA Kiyoko JOHZAKI Mami TOMINO Fumihiko MOURI Satoshi MORISHIGE Shuki OYA Yoshitaka YAMASAKI Koji NAGAFUJI Naoto SHIBA 《Physical Therapy Research》2021,24(1):69
Objective: Muscle atrophy is associated with autologous stem cell transplantation (ASCT)-related outcomes in patients with malignant lymphoma (ML). However, the impact of ASCT on muscle mass remains unclear in patients with ML. The aims of this study were to investigate changes in muscle mass and risk profiles for muscle atrophy after ASCT. Method: We enrolled 40 patients with refractory ML (age 58 [20-74] years, female/male 16/24, body mass index (BMI) 21.1 kg/m2 [17.1-29.6]). Psoas muscle mass was assessed using the psoas muscle index (PMI) before and after ASCT. Statistical analysis used: Independent factors associated with a severe decrease rate of change in PMI were evaluated by decision-tree analysis, respectively. Results: PMI was significantly decreased after ASCT (4.61 vs. 4.55 cm2/m2; P=0.0425). According to the decision-tree analysis, the regimen was selected as the initial split. The rates of change in PMI were −5.57% and −3.97% for patients administered MCEC and LEED, respectively. In patients who were administered LEED, the second branching factor was BMI. In patients with BMI < 20.3 kg/m2, the rate of change in PMI was −7.16%. On the other hand, the rate of change in PMI was 4.05% for patients with BMI ≥ 20.3 kg/m2. Conclusion: We demonstrated that muscle mass decreased after ASCT in patients with ML. Patients who received MCEC and patients with low BMI were at risk for a decrease in muscle mass. 相似文献
82.
Yan Sun Masanori Koshimizu Shunji Kishimoto Keisuke Asai 《Journal of Sol-Gel Science and Technology》2012,62(3):313-318
Transparent and crack-free Pr-doped silica glass scintillators were successfully synthesized using the sol–gel method. A peak
found at 301 nm in the photoluminescence spectrum was ascribed to a radiative transition of the Pr3+ emission center. The associated excitation peak was located at 276 nm. The energy of the excitation peak (4.50 eV) was significantly
lower than the energy gap (5.83 eV) of the 1S0 to 3H4
f–f transition. Therefore, the f–f transition was excluded as the origin, and the transition was attributed to 5d–4f. In the absorption spectrum, several bands of the f–f transition were observed. Fourier transform infrared spectroscopy was employed to understand the microstructural features
and OH group concentration in the Pr3+-doped silica glass. It was revealed that a Si–O network had been successfully formed, and that the OH group concentration
decreased with increasing thermal treatment temperature reaching a saturation value for temperatures higher than 750 °C. The
absence of praseodymium oxide nanocrystalline clusters was confirmed by transmission electron microscopy (TEM), even in the
sample with the highest Pr ion concentration. Scintillation properties of the Pr3+-doped silica glass were also characterized. The scintillation decay time constants were estimated to be approximately 1.3
and 14 ns, which supports the assignment of the luminescence to the 5d–4f transition. The scintillation light yield of the Pr3+-doped silica glass was estimated to be approximately 130 photons/MeV. 相似文献
83.
This study proposes an efficient exact algorithm for the precedence-constrained single-machine scheduling problem to minimize total job completion cost where machine idle time is forbidden. The proposed algorithm is based on the SSDP (Successive Sublimation Dynamic Programming) method and is an extension of the authors’ previous algorithms for the problem without precedence constraints. In this method, a lower bound is computed by solving a Lagrangian relaxation of the original problem via dynamic programming and then it is improved successively by adding constraints to the relaxation until the gap between the lower and upper bounds vanishes. Numerical experiments will show that the algorithm can solve all instances with up to 50 jobs of the precedence-constrained total weighted tardiness and total weighted earliness–tardiness problems, and most instances with 100 jobs of the former problem. 相似文献
84.
Ikeda K Ikawa K Kozumi T Yokoshige S Horikawa S Morikawa N 《Analytical and bioanalytical chemistry》2012,403(7):1823-1830
A simple and sensitive GC-EI-MS method using solvent extraction and evaporation was developed for the determination of olanzapine concentrations in plasma samples. Because olanzapine and promazine, which was used as the internal standard (IS), are nitrogenous bases, they can adsorb to the weakly acidic silanol groups on the surfaces of glass centrifuge tubes during solvent extraction and evaporation. Silylation of the glass tubes, addition of triethylamine (TEA), and use of a sample solution with a basic pH could prevent adsorption loss. The extraction method involved mixing plasma (500 μL) in a silylated glass tube with a promazine solution (2 μg/mL, 25 μL) in methanol containing 1% TEA. After addition of aqueous sodium carbonate (0.5 mol/L, pH 11.1, 1 mL) and extraction into 3 mL of dichloromethane/n-hexane (1:1, v/v) containing 1% TEA, the organic phase was evaporated to dryness in a silylated glass tube. The residue was dissolved in ethyl acetate containing 1% TEA (50 μL). For GC-EI-MS analysis, the calibration curves of olanzapine in human plasma were linear from 0.5 to 100 ng/mL. Intra- and interday precisions in plasma were both less than 7.36% (coefficient of variation), and the accuracy was between 94.6 and 110% for solutions with concentrations greater than 0.5 ng/mL. The limit of quantification was 0.5 ng/mL in plasma. The assay was applied to therapeutic drug monitoring in samples from three schizophrenic patients. 相似文献
85.
Heisuke Ishino Shigeto Iwai Shunji Iwamoto Tsuneo Okumura Takayoshi Kobayashi Eiji Tokunaga 《Optical Review》2010,17(3):337-340
Nonlinear confocal absorption microspectroscopy of single nanocrystals at low temperatures was introduced in the study of
perylene nanocrystals. By the stationary pump-probe method, single nanocrystals were photoexcited into metastable excited
states, and difference absorption spectra due to excited-state absorption and ground-state depletion were simultaneously recorded
using a multichannel lock-in amplifier. It was revealed that the free Frenkel exciton band for single perylene nanocrystals
is broader in width than that for the bulk crystal at low temperatures, suggesting that the exciton band is inhomogeneously
broadened even for single perylene nanocrystals. 相似文献
86.
87.
利用太阳能光催化还原CO2和H2O到燃料和化学品是一条极具吸引力但又充满挑战性的转化途径.迄今为止,只有非常有限的光催化剂已经被报道可以在可见光照射下光催化还原CO2.局部表面等离子体共振(LSPR)现象可以被用作一种有效的开发可见光催化剂的策略.贵金属Au,Ag,Pt等的LSPR现象已经被较为广泛的研究,并应用于光催化、光热、气敏等多种领域.而低价态金属自掺杂的金属氧化物,如MoO3-x和WO3-x,也被证明具有LSPR现象,可用于开发更加廉价的可见光催化剂.本文通过简单的溶剂热法成功合成了低价态Mo自掺杂的MoO3-x纳米片催化剂,并在合成过程中原位加入TiO2纳米颗粒(TiO2-NP)和TiO2纳米棒(TiO2-NT),构建了MoO3-x-TiO2纳米复合物.电镜表征显示,MoO3-x-TiO 相似文献
88.
This paper proposes two types of alternative criteria of optimality for the continuous time portfolio selection problem. The optimality criteria, the so–called Laplace–Stieltjes transform (LST) criteria, are based on the assumption that the financial agent has a target level for the wealth accumulation process. These criteria are closely related to the so–called threshold stopping investment rule. We analytically derive the LST criteria and numerically compare them with the well–known Kelly criterion. It is shown that the portfolio strategies suggested may overcome the problem that the growth portfolio is often overestimated in several investment situations. 相似文献
89.
90.
Shunji Nomura Hiromichi Kawai Itsuro Kimura Mitsuyasu Kagiyama 《Journal of Polymer Science.Polymer Physics》1970,8(3):383-400
A mathematical representation of orientation distribution of structural units within the bulk polymer is given in terms of an expansion of the distribution function in a series of spherical harmonics. Each coefficient of the expanded series is discussed in general relation to the orientation factors, average degrees of orientation distribution, defined by several different authors independently. Several optical techniques to evaluate the orientation factors, the second and fourth moments of orientation distribution of crystalline and noncrystalline structural units from optical dichroic quantities, are discussed. Some graphical representations of the state of orientation are proposed, and the estimation of orientation distribution from the orientation factors of different orders is discussed quantitatively. 相似文献