著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.55, no.2, pp.99-115, 2007 (Released:2007-04-15)
参考文献数
27
被引用文献数
6 7

Ions are not organisms, and thus they do not proliferate by either sexual or asexual reproduction. They are hence incapable of being parents, children, or grandchildren. Therefore, the terms “parent ion,” “daughter ion,” and “granddaughter ion” are scientifically incorrect. In addition, mass spectrometrists should note that the terms “daughter ion” and “granddaughter ion” are gender-specific. (The terms “daughter nuclide” and “granddaughter nuclide” are also gender-specific.) Therefore, the terms “parent ion” and “daughter ion” need to be replaced by “precursor ion” and “product ion,” respectively. Instead of the gender-specific terms “granddaughter ion” and “great-granddaughter ion,” the gender-neutral terms “second generation product ion” and “third generation product ion” should be used.
著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.56, no.1, pp.27-32, 2008-02-01 (Released:2008-02-26)
参考文献数
2
被引用文献数
1 1

The terms “accurate mass” and “exact mass” are not synonymous in mass spectrometry. Accurate mass refers to the mass value of an ion or radical determined experimentally by mass spectrometry. On the other hand, exact mass refers to the mass value of a single ion, radical, or molecule calculated by summing the mass values of individual isotopes. To avoid confusion, “measured accurate mass” and “calculated exact mass” should be used in place of “accurate mass” and “exact mass,” respectively.
著者
田中 耕一 吉野 健一 内藤 康秀 豊田 岐聡
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.56, no.2, pp.49-54, 2008-04-01 (Released:2008-04-15)
被引用文献数
2 2

Linear mode, reflectron mode, and multi-turn are techniques for m/z analysis in time-of-flight mass spectrometry. Reflectron mode and multi-turn enable analysis to be performed with a higher mass resolving power than that attained with linear mode. In this commentary, starting from the basic principles of time-of-flight mass spectrometry in linear mode, the possible improvements in mass resolving power that can be made by reflectron mode and multi-turn techniques will be explained.
著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.55, no.6, pp.381-388, 2007 (Released:2007-12-15)
参考文献数
9
被引用文献数
1 1

In terms related to mass spectrometry, “TIC” should be used as an abbreviation for “total ion current.” However, many mass spectrometrists use “TIC” as an abbreviation for “total ion chromatogram” while referring to “total ion current chromatogram,” which is incorrect. Another common misunderstanding related to abbreviations is the usage of “MCP” as an abbreviation for “multichannel plate,” which should be used for “microchannel plate.”
著者
吉野 健一
出版者
The Mass Spectrometry Society of Japan
雑誌
質量分析 = Mass spectroscopy (ISSN:13408097)
巻号頁・発行日
vol.56, no.2, pp.69-76, 2008-04-01
参考文献数
7
被引用文献数
1

The Japanese word "mirimasu" originates from the English words "milli" and "mass." It is normally used as an alias for "measured accurate mass" and "accurate mass measurement." It causes confusions that "mirimasu" is also used as an alias for "high resolution mass spectrometry," "high resolution mass spectrum (spectra)," and "mass spectrometer with high mass resolving power." This nomenclature results from the fact that "high resolution" is confused with "high accuracy." In addition to these interpretations, Japanese mass spectrometrists also use "mirimasu" as an alias for "one-thousandth of a unified atomic mass unit," "one-thousandth of a dalton (mDa)," and "one-thousandth of an <i>m/z</i> unit." This incorrect usage is due to a lack of understanding of the unit system of atomic mass and <i>m/z</i> on mass spectra. Therefore, "mirimasu" should not be used in Japanese, because it is ambiguous and involves various problems and misunderstandings.
著者
原 明人 竹井 美智子 吉野 健一 竹内 文代 佐々木 伸夫
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. ED, 電子デバイス (ISSN:09135685)
巻号頁・発行日
vol.104, no.3, pp.1-6, 2004-04-09

ガラス基板上に550℃のプロセス温度で金属ゲート電極を有する自己整合ダブルゲート多結晶シリコン(poly-Si)薄膜トランジスタ(TFT)を形成した。結晶化には半導体励起固体(DPSS)連続発振(CW)レーザによるCLC技術を利用した。本TFTの電流駆動能力は、トツプゲート型のエキシマレーザ結晶化poly-Si TFTの電流駆動能力の8-9倍を有する。さらに、単結晶の(100) SIMOX-TFTよりも大きい。また、89mV/decと小さいS値が得られた。これらの特性は、ガラス基板上への高性能回路の形成を導くものである。
著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.62, no.5, pp.61-64, 2014-10-01 (Released:2014-10-15)
参考文献数
7

IUPAC (International Union of Pure and Applied Chemistry) recommends that a hyphen, or, alternatively, a slash, should be used to indicate a combination of two analytical techniques such as liquid chromatography separation combined with mass spectrometry detection, in the last definitions of terms relating to mass spectrometry. Thus, such combined methods can be written as liquid chromatography-mass spectrometry or alternatively liquid chromatography/mass spectrometry. The corresponding abbreviations are LC-MS or LC/MS.
著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.56, no.4, pp.209-213, 2008-08-01 (Released:2008-08-15)
参考文献数
6
被引用文献数
1 1

Mass spectrometers separate ions according to each mass/charge value, which is not a dimensionless quantity. However, the m/z value indicated in the abscissa of mass spectra is defined as a dimensionless quantity and not a numerical value the same as the mass/charge value in kilograms/coulombs (kg/C) or in unified atomic mass units/coulombs (u/C). The numerical value of m/z converted from the mass/charge value depends on the unified atomic mass unit and the physical constant “elementary charge,” e that is also the atomic unit of charge. This conversion confuses many mass spectrometrists with regard to the abscissa labeling of mass spectra, e.g. the symbol “m/z” is considered as an abbreviation of the term “mass-to-charge ratio.”
著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.55, no.4, pp.298-309, 2007 (Released:2007-08-15)
参考文献数
7
被引用文献数
5 5

The term “mass spectrometry” is usually abbreviated as “MS.” It is confusing that “MS” is also used as an abbreviation for “mass spectrometer,” “mass spectroscopy,” “mass spectrograph,” “mass spectrum (spectra),” and “mass separation.” “Masu” in Japanese is an ambiguous word and originates from “mass” in English or “Mass” in German. In addition to the meaning of mass, however, “masu” is used as an abbreviation for “mass spectrometry,” “mass spectrometer,” “unified atomic mass unit,” and “a quantity of m/z= 1” by Japanese mass spectrometrists. Because of the ambiguity in the usage of “MS” and “masu,” some inappropriate terms, such as “peptide MS fingerprinting” for “peptide mass fingerprinting” and “TOF-mass” for “time-of-flight mass spectrometer,” were used by Japanese mass spectrometrists.
著者
吉野 健一
出版者
The Mass Spectrometry Society of Japan
雑誌
質量分析 = Mass spectroscopy (ISSN:13408097)
巻号頁・発行日
vol.56, no.6, pp.269-274, 2008-12-01
被引用文献数
1

The unified atomic mass unit (unit symbol: u) is a non-SI unit of mass, defined as one-twelfth the mass of a single <sup>12</sup>C atom in its ground state. [SI: Le Système International d'Unités; The International System of Units] This definition was agreed upon by both the International Union of Pure and Applied Physics (IUPAP) and the International Union of Pure and Applied Chemistry (IUPAC) in the early 1960s to resolve a longstanding difference between two scales of the atomic mass unit. The term "atomic mass unit" (unit symbol: amu) has been used as a unit of mass defined as one-sixteenth the mass of a single atom <sup>16</sup>O [<i>m</i>(<sup>16</sup>O)=16 amu] in physics and as one-sixteenth the isotope-averaged atomic mass (equivalent to the atomic weight) of oxygen [<i>A</i><sub>r</sub>(O)=16 amu] in chemistry.<br>The unit dalton (unit symbol: Da) is also a non-SI unit of mass defined as "1 Da=1 u," and is accepted as a unit for use by the SI in the 8th edition of the SI brochure (2006). Therefore, both the unified atomic mass unit and dalton are authorized units for mass of ions and molecules. <br>It is a common mistake to use the deprecated term "atomic mass unit" and the deprecated unit symbol "amu" for the unit of mass defined as one-twelfth the mass of single atom <sup>12</sup>C. The unit symbol "mmu," meaning a millimass unit, is also an appropriate unit in SI. Instead of "mmu," "mDa" or and "10<sup>-3</sup> u" should be used.
著者
所 功 川北 靖之 黒住 祥祐 小林 一彦 宮川 康子 若松 正志 海野 圭介 山口 剛史 飯塚 ひろみ 石田 俊 今江 廣道 宇野 日出生 岸本 香織 京條 寛樹 久世 奈欧 (野村 奈欧) 嵯峨井 建 笹部 昌利 篠田 孝一 宍戸 忠男 末松 剛 土橋 誠 橋本 富太郎 松本 公一 村山 弘太郎 山本 宗尚 吉野 健一 米田 裕之 若杉 準治
出版者
京都産業大学
雑誌
基盤研究(C)
巻号頁・発行日
2009

近世(江戸時代)の賀茂大社(上賀茂・下鴨両社)では、世襲の社家神職たちにより、朝廷と幕府の支援をえて、葵祭や社務が運営されてきた。私共は、その実情を伝える社家の記録や祭礼の絵巻などを、朝廷の御記や公家の日記などと照合しながら、相互関係の解明に努めた。その成果は、本学日本文化研究所の紀要や所報などに発表し、また本学図書館所蔵の賀茂関係絵巻などは大半をデジタル化し詞書(ことばがき)の解読も加えて貴重書アーカイブスに公開している。
著者
吉野 健一
出版者
一般社団法人 日本質量分析学会
雑誌
Journal of the Mass Spectrometry Society of Japan (ISSN:13408097)
巻号頁・発行日
vol.56, no.6, pp.269-274, 2008-12-01 (Released:2008-12-15)
参考文献数
7
被引用文献数
1 1

The unified atomic mass unit (unit symbol: u) is a non-SI unit of mass, defined as one-twelfth the mass of a single 12C atom in its ground state. [SI: Le Système International d'Unités; The International System of Units] This definition was agreed upon by both the International Union of Pure and Applied Physics (IUPAP) and the International Union of Pure and Applied Chemistry (IUPAC) in the early 1960s to resolve a longstanding difference between two scales of the atomic mass unit. The term “atomic mass unit” (unit symbol: amu) has been used as a unit of mass defined as one-sixteenth the mass of a single atom 16O [m(16O)=16 amu] in physics and as one-sixteenth the isotope-averaged atomic mass (equivalent to the atomic weight) of oxygen [Ar(O)=16 amu] in chemistry.The unit dalton (unit symbol: Da) is also a non-SI unit of mass defined as “1 Da=1 u,” and is accepted as a unit for use by the SI in the 8th edition of the SI brochure (2006). Therefore, both the unified atomic mass unit and dalton are authorized units for mass of ions and molecules. It is a common mistake to use the deprecated term “atomic mass unit” and the deprecated unit symbol “amu” for the unit of mass defined as one-twelfth the mass of single atom 12C. The unit symbol “mmu,” meaning a millimass unit, is also an appropriate unit in SI. Instead of “mmu,” “mDa” or and “10-3 u” should be used.
著者
原 明人 吉野 健一 竹内 文代 佐々木 伸夫
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. ED, 電子デバイス (ISSN:09135685)
巻号頁・発行日
vol.101, no.15, pp.21-27, 2001-04-13

エネルギー安定性の非常に高い半導体励起固体(DPSS)CWレーザ(Nd:YVO_4, 532nm, 10W)を利用してガラスに熱損傷を与えることなくTFTのチャネル領域を単結晶化する新しい結晶成長方法について報告する。本方法の特徴は、(1)チャネル領域を熱浴として作用する厚いシリコン膜で覆う(2)ネッキング構造をチャネル領域に付加する(3)チャネル領域に沿って、ネッキング領域側から結晶化させる(4)裏面からレーザ照射することである。本方法を利用してチャネル領域全域にわたって単結晶化することに成功した。単結晶化領域は幅2μm、長さ20μmである。450℃のプロセスを利用してガラス上にTFTを作成した結果、最高移動度410cm^2/Vs(平均移動度310cm^2/Vs), S-value 0.20V/dec、Vth=0.2Vが得られた。