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Baek, K. Y.,Fujimura, Y.,Hayashi, M.,Lin, S. H.,Kim, S. K. American Chemical Society 2011 The Journal of physical chemistry A Vol.115 No.34
<P>Conformation-dependent properties of <SMALL>l</SMALL>-tyrosine and <SMALL>l</SMALL>-tryptophan in neutral and radical cations were studied by using the density functional theory (DFT) with a new density functional M05-2X. The results are compared with those obtained by using the conventional DFT (B3LYP). Results obtained by both types of DFT were in qualitative accord, including the existence of two conformational subgroups and their subgroup-dependent adiabatic ionization energy and hydrogen bonding. On the other hand, quantitative differences were found between the two DFT methods as well: the M05-2X method successfully reproduced experimental adiabatic ionization energy, whereas the B3LYP functional consistently yielded significantly lower values by 0.2–0.3 eV. More importantly, natural bond orbital (NBO) analysis for cationic conformers showed that all conformers of <SMALL>l</SMALL>-tyrosine and <SMALL>L</SMALL>-tryptophan undergo charge localization upon ionization regardless of the presence of intramolecular hydrogen bonding, unlike the case of <SMALL>l</SMALL>-phenylalanine that was treated earlier by other studies. Different degrees of charge localization among all three aromatic amino acids are explained by employing a simple model in which the aromatic amino acid is assumed to consist of two submoieties of distinct cationic core: the backbone and aromatic side chain. The difference in adiabatic ionization energy between these two submoieties is found to govern the degree of charge localization.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpcafh/2011/jpcafh.2011.115.issue-34/jp200826z/production/images/medium/jp-2011-00826z_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp200826z'>ACS Electronic Supporting Info</A></P>
Monteiro Aricia Noelli Brega,Petri Bruno Simões Sérgio,Furuya Haroldo,Milanelo Liliane,Scognamillo Márcia Valéria Rizzo,Hayashi Ayne Murata 사단법인약침학회 2022 Journal of Acupuncture & Meridian Studies Vol.15 No.5
Background: The growth of exotic pet medicine is leading to fast developments in clinical investigations on birds. Acupuncture, specifically pharmacopuncture, offers safe chemical restraint options. Objectives: To investigate pharmacopuncture at acupoint GV20 in blue-fronted Amazon parrots (Amazona aestiva) using ketamine and midazolam. Methods: Sixteen healthy birds were distributed into four groups (C: intramuscular control; 1/2 C: 1/2 dose intramuscular control; 1/2 GV20: 1/2 dose at acupoint GV20; 1/5 GV20: 1/5 dose at acupoint GV20). Degree of sedation, latency, recuperation time, heart and respiratory rate, and body temperature were measured. Quantitative data were analyzed by a Student’s t-test. Results: The C, 1/2 C, and 1/2 GV20 groups showed the same degree of sedation. The 1/2 GV20 group showed longer latency times (6 ± 2.1) than the 1/2 C (2.5 ± 0.5) group. Sedation time did not differ between the C (28 ± 9.8), 1/2 C (30.5 ± 8.6), and 1/2 GV20 (41 ± 22.24) groups. The 1/2 GV20 group recuperated faster (13.7 ± 3.7) than the C group (64.2 ± 3.5). The C and 1/2 C groups showed tremors and slow and unstable recovery. Two animals in the C group showed mild hypothermia (38°C). Conclusion: The use of 1/2 GV20 was effective and safe to sedate blue-fronted Amazon parrots without side effects, providing easy, stable, and fast recovery. The use of 1/5 GV20 had a shorter sedation time. These findings show that the combination of acupuncture and drugs provides new possibilities for efficient anesthetic protocols with fewer side effects in birds.
Recent Developments in Radiationless Transitions
Hayashi, M.,Liang, K.K.,Chang, C.H.,Mebel, A.,Lin, S.H. Korean Society of Photoscience 1999 Journal of Photosciences Vol.6 No.3
In this paper, the historicla development of radiationless transitions will be briefly reviewed. The paper will then focus on the ab inition calculations of internal conversion rate constants with emphasis on the case of small polyatomic molecules where the Duschinsky effect is important . As an example, we have chosen the new expressions for singlevibronic level rate constants of radiationless transitions. This type of rate constants is important in femto-second processes.
Characterization of ANITA and QMN Neutron Beams at TSL Using Proton Recoil Techniques
Y. Naitou,Y. Watanabe,S. Hirayama,M. Hayashi,A. Prokofiev,A. Hjalmarsson,S. Pomp,P. Andersson,R. Bevilacqua,C. Gustavsson,M. Osterlund,V. Simutkin,H. Sjostrand,M. Tesinsky,U. Tippawan 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Neutron beam characterization measurements have been carried out in both the ANITA and QMN modes using the incident proton beam of 180 MeV at the The Svedverg Laboratory (TSL) in Uppsala. The spectral neutron flux data have been obtained by measuring elastic np-scattering with the Medley setup. The experimental results in the ANITA and QMN modes are compared with an MCNPX simulation and with the systematics of QMN spectra, respectively.
Characterization of an Intense Laser-Produced Preformed Plasma for Proton Generation
A Sagisaka,A. Noda,A. Fukumi,A. Yogo,A. S. Pirozhkov,H. Daido,K. Nemoto,K. Ogura,M. Nishiuchi,M. Mori,M. Kado,S. Orimo,S. Nakamura,T. Nayuki,T. Shirai,T. Fujii,Y. Oishi,Y. Hayashi,Y. Iwashita,Z. Li 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.I
High-energy protons are generated with a 3-μm-thick tantalum target irradiated with a highintensity laser under the preformed plasma condition. We observe the electron density distributions of preformed plasmas with two-color probe beams as interferometers. The preformed plasma at the front side of the target is generated by pre-pulses of a high-intensity Ti:sapphire laser. In this preformed plasma condition, the maximum proton enegy is 900 keV. The half angle of the generated proton beam (>500 keV) is about 10.