初速度
WordNet
- occurring at the beginning; "took the initial step toward reconciliation"
- the first letter of a word (especially a persons name); "he refused to put the initials FRS after his name"
- mark with ones initials
PrepTutorEJDIC
- 『最初の』;語頭にある / (語の)最初の文字 / 《複数形で》(姓名の)『かしら文字』,イニシアル / …‘に'かしら文字で署名する(印をつける)
- 〈C〉速度
UpToDate Contents
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English Journal
- Mass selectivity of dipolar resonant excitation in a linear quadrupole ion trap.
- Douglas DJ, Konenkov NV.Author information Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada.AbstractRATIONALE: For mass analysis, linear quadrupole ion traps operate with dipolar excitation of ions for either axial or radial ejection. There have been comparatively few computer simulations of this process. We introduce a new concept, the excitation contour, S(q), the fraction of the excited ions that reach the trap electrodes when trapped at q values near that corresponding to the excitation frequency.
- Rapid communications in mass spectrometry : RCM.Rapid Commun Mass Spectrom.2014 Mar 15;28(5):430-8. doi: 10.1002/rcm.6795.
- RATIONALE: For mass analysis, linear quadrupole ion traps operate with dipolar excitation of ions for either axial or radial ejection. There have been comparatively few computer simulations of this process. We introduce a new concept, the excitation contour, S(q), the fraction of the excited ions th
- PMID 24497280
- The kinetic mechanism of Human Thymidine Phosphorylase - a molecular target for cancer drug development.
- Deves C, Rostirolla DC, Martinelli LK, Bizarro CV, Santos DS, Basso LA.Author information Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), 6681/92-A Av. Ipiranga, 90619-900, Porto Alegre, RS, Brazil. luiz.basso@pucrs.br diogenes@pucrs.br.AbstractHuman Thymidine Phosphorylase (HTP), also known as the platelet-derived endothelial cell growth factor (PD-ECGF) or gliostatin, catalyzes the reversible phosphorolysis of thymidine (dThd) to thymine and 2-deoxy-α-d-ribose-1-phosphate (2dR1P). HTP is a key enzyme in the pyrimidine salvage pathway involved in dThd homeostasis in cells. HTP is a target for anticancer drug development as its enzymatic activity promotes angiogenesis. Here, we describe cloning, expression, and purification to homogeneity of recombinant TYMP-encoded HTP. Peptide fingerprinting and the molecular mass value of the homogenous protein confirmed its identity as HTP assessed by mass spectrometry. Size exclusion chromatography showed that HTP is a dimer in solution. Kinetic studies revealed that HTP displayed substrate inhibition for dThd. Initial velocity and isothermal titration calorimetry (ITC) studies suggest that HTP catalysis follows a rapid-equilibrium random bi-bi kinetic mechanism. ITC measurements also showed that dThd and Pi binding are favorable processes. The pH-rate profiles indicated that maximal enzyme activity was achieved at low pH values. Functional groups with apparent pK values of 5.2 and 9.0 are involved in dThd binding and groups with pK values of 6.1 and 7.8 are involved in phosphate binding.
- Molecular bioSystems.Mol Biosyst.2014 Mar 4;10(3):592-604. doi: 10.1039/c3mb70453j. Epub 2014 Jan 10.
- Human Thymidine Phosphorylase (HTP), also known as the platelet-derived endothelial cell growth factor (PD-ECGF) or gliostatin, catalyzes the reversible phosphorolysis of thymidine (dThd) to thymine and 2-deoxy-α-d-ribose-1-phosphate (2dR1P). HTP is a key enzyme in the pyrimidine salvage pathway in
- PMID 24407036
- Characterization of acoustic droplet vaporization for control of bubble generation under flow conditions.
- Kang ST1, Huang YL1, Yeh CK2.Author information 1Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.2Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan. Electronic address: ckyeh@mx.nthu.edu.tw.AbstractThis study investigated the manipulation of bubbles generated by acoustic droplet vaporization (ADV) under clinically relevant flow conditions. Optical microscopy and high-frequency ultrasound imaging were used to observe bubbles generated by 2-MHz ultrasound pulses at different time points after the onset of ADV. The dependence of the bubble population on droplet concentration, flow velocity, fluid viscosity and acoustic parameters, including acoustic pressure, pulse duration and pulse repetition frequency, was investigated. The results indicated that post-ADV bubble growth spontaneously driven by air permeation markedly affected the bubble population after insonation. The bubbles can grow to a stable equilibrium diameter as great as twice the original diameter in 0.5-1 s, as predicted by the theoretical calculation. The growth trend is independent of flow velocity, but dependent on fluid viscosity and droplet concentration, which directly influence the rate of gas uptake by bubbles and the rate of gas exchange across the wall of the semipermeable tube containing the bubbles and, hence, the gas content of the host medium. Varying the acoustic pressure does not markedly change the formation of bubbles as long as the ADV thresholds of most droplets are reached. Varying pulse duration and pulse repetition frequency markedly reduces the number of bubbles. Lengthening pulse duration favors the production of large bubbles, but reduces the total number of bubbles. Increasing the PRF interestingly provides superior performance in bubble disruption. These results also suggest that an ADV bubble population cannot be assessed simply on the basis of initial droplet size or enhancement of imaging contrast by the bubbles. Determining the optimal acoustic parameters requires careful consideration of their impact on the bubble population produced for different application scenarios.
- Ultrasound in medicine & biology.Ultrasound Med Biol.2014 Mar;40(3):551-61. doi: 10.1016/j.ultrasmedbio.2013.10.020. Epub 2014 Jan 13.
- This study investigated the manipulation of bubbles generated by acoustic droplet vaporization (ADV) under clinically relevant flow conditions. Optical microscopy and high-frequency ultrasound imaging were used to observe bubbles generated by 2-MHz ultrasound pulses at different time points after th
- PMID 24433748
Japanese Journal
- Study on Correlation between Electrochemical-Neutrino-Detector Signal and Solar Wind Velocity
- Nakamura Shouhei,Terao Norichika,Aida Nur,Ishibashi Kenji,石橋 健二,ナカムラ ショウヘイ,テラオ ノリチカ,イシバシ ケンジ
- Memoirs of the Faculty of Engineering, Kyushu University 73(1), 39-46, 2013-06-24
- … The output current of the detector produces a peak at the first 1-3 days, as initial peak. … The Initial peak shows a large variation in individual measurements for natural background neutrinos. … In experiments in certain period, the initial peak had a relationship to the solar wind. … Further experiments were carried out to study the correlation between the solar wind and the initial peak. …
- NAID 120005303387
- Minority Carrier Annihilation in Lateral Direction Caused by Recombination Defects at Cut Edges and Bear Surfaces of Crystalline Silicon
- Sameshima Toshiyuki,Furukawa Jun,Yoshidomi Shinya
- Jpn J Appl Phys 52(4), 041303-041303-6, 2013-04-25
- … \tau_{\text{eff}} decreased from 3.4\times 10^{-3} (initial) to 6.5\times 10^{-4} s at cut edges. … A simple model of carrier diffusion in the lateral direction with a carrier lifetime of 3.4\times 10^{-3} s and a recombination velocity of 500 cm/s at the cut edges well explained the experimental spatial change in \tau_{\text{eff}} near the cut edges. …
- NAID 150000106608
- Aerodynamic drag of modern soccer balls
- Asai Takeshi,Seo Kazuya,淺井 武
- SpringerPlus 2(1), 171, 2013-04-00
- … The flight trajectory simulation suggested that the Tango 12, one of the newest soccer balls, has less air resistance in the medium-speed region than the Jabulani and can thus easily acquire large initial velocity in this region. …
- NAID 120005247052
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検索
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終了
:q : (何も変更していない場合)保存せずに終了
:q! : (何か変更した場合)保存せずに終了
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- 英
- initial velocity, vi
- 同
- 初速
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- 関
- initial velocity
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- 関
- archaic、beginning、early、early stage、early-stage、incipient、initially、original、originally
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- 関
- rate、speed