Search Results:　 1-20 of 1712

1

Effects of Growth Temperatures on Crystal Quality of GaN by Vapor Phase Epitaxy Using GaCl<sub>3</sub> and NH<sub>3</sub>

Ueda Tetsuzo , Yuri Masaaki , Harris James S.

… Although the growth has been established in view of the mass-production of the GaN substrate, the crystal quality has never been sufficiently correlated with the growth conditions. … Peaks originating from residual acceptors are dominant in the PL spectra of the films with rough surfaces grown at higher or lower temperatures from the optimized window. …

Jpn J Appl Phys 50(8), 085501-085501-5, 2011-08-25

The Japan Society of Applied Physics
2

Qualitative Discrimination of Vegetable Oils Using Soft-Ionization Mass Spectrometry and Multivariate Analysis [in Japanese]

MISHIMA Yuji , MARUYAMA Harumi , HINO Kenji , TSUGOSHI Takatoshi , SAITO Naoaki , NISHIMOTO Yuko , MITSUI Toshiyuki

本研究では，植物油脂について，ソフトイオン化質量分析法の一つであるイオン付着イオン化質量分析（IAMS）法による分析を行い，そのデータ解析方法について検討した．IAMS法は擬分子イオン中心のマススペクトルデータが得られるため，GC等の分離操作なしでも試料性状を反映した特徴的なマススペクトルを得ることができる．植物油脂の分析を例とし，あらかじめ構築したマススペクトルのデータベースを用いた主成分分析や …

BUNSEKI KAGAKU 60(5), 409-418, 2011-05-05

J-STAGE CrossRef References (14)
3

Analysis of Tackifier Resin by Field Desorption Mass Spectrometry [in Japanese]

KUMOOKA Yoshio

市販の主要な粘着付与剤であるロジン−グリセロールエステル類，テルペン樹脂，テルペン−フェノール樹脂，クマロン樹脂と石油系樹脂を電界脱離質量分析法（FD MS）で，測定範囲m/z 150〜1600で，分析したところ，それぞれモノマー組成の違いによる特徴的な質量スペクトルが得られ，分子量分布から樹脂のグレード等を識別できると考えられた．次に，市販の包装用粘着テープを溶媒抽出し，粘着剤中の粘着付与剤をF …

BUNSEKI KAGAKU 60(3), 293-300, 2011-03-05

J-STAGE CrossRef References (9)
4

Monitoring and Characterization of Pyrolysis Gas from Various Polymers Using Skimmer Interface-Connected [TG/DTA] / [Ion Attachment Ionization-TOFMS] [in Japanese]

MISHIMA Yuji , YOSHIDA Hiromi , HINO Kenji , ONUKI Satomi , TSUGOSHI Takahisa , SAITO Naoaki , NISHIMOTO Yuko

新たに開発したスキマーインターフェース接続熱重量示差熱分析同時測定/イオン付着イオン化飛行時間型質量分析装置を用いて，樹脂試料10種類の熱分解ガスの測定を行った．イオン化において熱分解ガス成分のフラグメンテーションを伴わないソフトイオン化法を備えた開発装置は，飛行時間型質量分析計を採用したことにより優れた時間分解能で発生ガス成分のリアルタイムモニタリングが可能である．また，熱物性データと質量分析デ …

BUNSEKI KAGAKU 60(3), 261-267, 2011-03-05

J-STAGE CrossRef References (14)
5

Reflectance spectra for monitoring green herbage mass in Zoysia-dominated pastures

ITANO Shiro , TOMIMATSU Hajime

Grassland science 57(1), 9-17, 2011-03-01

References (31)
6

Applications of Direct Analysis in Real Time (DART) Mass Spectrometry [in Japanese]

OSUGA Junichi , KONUMA Kiyotaka

… We introduce applications of Direct Analysis in Real Time (DART) ion source, used in open-air at ground potential under ambient conditions, coupled with time-of-flight or quadrupole mass spectrometer.DART was developed in 2005 as a new type of atmospheric pressure ion source. … It means we can observe real-time spectra of a sample at ground potential under ambient condition. …

Journal of Synthetic Organic Chemistry, Japan 69(2), 171-175, 2011-02-01

J-STAGE CrossRef References (9)
7

Study of electron ionization mass spectra of JWH series cannabimimetic indoles [in Japanese]

内木太一 , 片木聖子 , 荻野雅人 [他]

Reports of the Central Customs Laboratory (51), 101-109, 2011-08
8

De novo peptide sequencing by PepNovo and PEAKS [in Japanese]

磯野直人 , 柳原和典 , 小林裕子 [他]

… We present a technique of de novo peptide sequencing from MALDI TOF/TOF tandem mass spectra by web-based programs, PepNovo and PEAKS. …

The bulletin of the Graduate School of Bioresources, Mie University (37), 79-85, 2011-02

IR
9

Classification and Identification of Bacteria by Matrix-Assisted Laser Desorption/Ionization-Mass Spectrometry Using Ribosomal Protein as Biomarkers

TERAMOTO Kanae

… In recent years, a method for the rapid identification of bacteria at the “species level” using matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) were proposed. … In this method, observed mass spectral peaks, which are used as biomarkers, are assigned using the calculated masses of ribosomal subunit proteins based on amino acid sequences registered in protein databases. …

Journal of the Mass Spectrometry Society of Japan 59(5), 85-94, 2011

J-STAGE CrossRef
10

Effects of Peanut-Skin Procyanidin A1 on Degranulation of RBL-2H3 Cells

TOMOCHIKA Keisuke , SHIMIZU-IBUKA Akiko , TAMURA Tomoko , MURA Kiyoshi , ABE Naoki , ONOSE Jun-ichi , ARAI Soichi

… Electrospray ionization mass spectrometry (ESI-MS) analysis of the purified polyphenol gave m⁄z 599 [M+Na]+. … Based on the results of 1H-NMR, 13C-NMR spectra, and optical rotation analysis, the polyphenol was identified as procyanidin A1. …

Bioscience, Biotechnology, and Biochemistry 75(9), 1644-1648, 2011

J-STAGE CrossRef
11

Isolation and Anti-Fatty Liver Activity of a Novel Cerebroside from the Sea Cucumber Acaudina molpadioides

XU Jie , WANG Yu-Ming , FENG Ting-Yu , ZHANG Bei , SUGAWARA Tatsuya , XUE Chang-Hu

… The major structure of AMC-2 was analyzed by gas chromatography-mass spectra. …

Bioscience, Biotechnology, and Biochemistry 75(8), 1466-1471, 2011

J-STAGE CrossRef
12

Encapsulation of Nickel Atom inside Fullerene by Energetic Ion Irradiation

UMAKOSHI Tatsuya , ISHIDA Hiroyasu , KANEKO Toshiro , HATAKEYAMA Rikizo

… The mass spectra of the samples analyzed by laser desorption/ionization mass spectrometry are similar to a calculated isotope distribution ratio of the nickel atom endohedral fullerene. …

Plasma and Fusion Research 6(0), 1206015-1206015, 2011

J-STAGE CrossRef
13

Three New Highly Acylated 3,4-seco-Grayanane Diterpenoids from the Fruits of Pieris formosa

Wu Zhao-Yuan , Li Yuan-Dan , Wu Gui-Sheng , Luo Huai-Rong , Li Hong-Mei , Li Rong-Tao

… Their structures were elucidated on the basis of extensive spectroscopic analysis, including 1D-, 2D-NMR, electrospray ionization-mass spectra (ESI-MS) and high resolution (HR)-MS. …

CHEMICAL & PHARMACEUTICAL BULLETIN 59(4), 492-495, 2011

J-STAGE CrossRef
14

Four New Sesquiterpenoids from the Fruits of Alpinia oxyphylla

Lv Xiao-Qing , Luo Jian-Guang , Wang Xiao-Bing , Wang Jun-Song , Luo Jun , Kong Ling-Yi

… Their structures were determined on the basis of spectroscopic analysis, including high resolution electrospray ionization mass spectrometry (HR-ESI-MS), 1D- and 2D-NMR, and the absolute configurations of 2 and 4 were determined by theoretical calculation of electronic circular dichroism (ECD) and comparison with the experimental ECD spectra. …

CHEMICAL & PHARMACEUTICAL BULLETIN 59(3), 402-406, 2011

J-STAGE CrossRef
15

Traditional Processing Strongly Affects Metabolite Composition by Hydrolysis in Rehmannia glutinosa Roots

Chang Wen-Te , Choi Young Hae , Van der Heijden Rob , Lee Meng-Shiou , Lin Ming-Kuem , Kong Hongwei , Kim Hye Kyong , Verpoorte Robert , Hankemeier Thomas , Van der Greef Jan , Wang Mei

… In order to understand the chemical changes resulting from the processing, a comprehensive analysis of Rehmanniae radix was made using 1H-NMR and Fourier transform (FT)-mass spectrometry in combination with multivariate data analysis. … The positive and negative ion-mode mass spectra by high resolution FT-MS revealed several series of ion clusters with mass differences of 162.053 Da, indicating a difference of a hexose moiety. …

CHEMICAL & PHARMACEUTICAL BULLETIN 59(5), 546-552, 2011

J-STAGE CrossRef
16

Analysis of the Essential Oils of Coriandrum sativum Using GC-MS Coupled with Chemometric Resolution Methods

Zhou Zhi-Feng , Chen Ling-Yun , Shen Mei , Ma An-De , Yang Xue-Mei , Zou Fei

… Through the chemometric resolution methods, peak clusters were uniquely resolved into the pure chromatographic profiles and mass spectra of each component. … Qualitative analysis was performed by comparing the pure mass spectra with those in the NIST 05 mass spectral library. …

CHEMICAL & PHARMACEUTICAL BULLETIN 59(1), 28-34, 2011

J-STAGE Ichushi Web CrossRef
17

Effect of electron-hole asymmetry on cross-polarized excitons in carbon nanotubes

Uryu Seiji , Ando Tsuneya

… Excitonic absorption of semiconducting carbon nanotubes for polarization perpendicular to the tube axis is theoretically studied in an effective-mass approximation including higher-order terms describing trigonal warping, curvature, lattice distortion, and electron-hole asymmetry. … Asymmetry between electrons and holes causes brightening of dark excitons leading to additional low-energy peaks in optical absorption spectra. …

Physical Review B 83(8), 085404-1, 2011

IR
18

ω Meson in Nucleus, Experimental Study(Hadrons in Nuclei,New Frontiers in QCD 2010-Exotic Hadron Systems and Dense Matter-)

OZAWA Kyoichiro

… New experiment to study mass modification of ω meson in nucleus is proposed at JPARC. … The proposed experiment measures missing mass spectra using A(π^-,nω)X reaction and invariant mass spectra with π^0γ decay mode. … To investigate the mass modification in nucleus, both cross section and mass distribution should be measured as a function of atomic number using several target. …

Progress of theoretical physics. Supplement (186), 325-330, 2010-12-17

CiNii Fulltext PDF - Paid References (27)
19

Theoretical Study of Formation Rates of η-, η'- and ω-Mesic Nuclei Induced by the Pion Beam(Hadrons in Nuclei,New Frontiers in QCD 2010-Exotic Hadron Systems and Dense Matter-)

NAGAHIRO Hideko

… We conclude that valuable information on mesons in the medium can be extracted from global structures of the missing mass spectra in the (π,N) reaction. …

Progress of theoretical physics. Supplement (186), 316-324, 2010-12-17

CiNii Fulltext PDF - Paid References (56)
20

Hadron Spectra and Quark Mass Dependence in Holographic QCD(Exotic Hadrons,New Frontiers in QCD 2010-Exotic Hadron Systems and Dense Matter-)

HASHIMOTO Koji

… Hadron masses and their quark-mass dependence are imporatant observables in strongly coupled QCD. … We apply holography, a string theory technique, to this problem, and find a qualitative coincidence with observed data of baryon spectra. …

Progress of theoretical physics. Supplement (186), 211-215, 2010-12-17

CiNii Fulltext PDF - Paid References (7)

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