carbon σとは 意味・読み方・使い方

This film forming method is characterized by replacing a hydrogen bond and a double bond of carbon to a carbon bond through irradiating the film surface with a light having a wavelength of activating a σ electron and a π electron of the respective bonds, to control ratios of the hydrogen bond and the double bond, and thereby to increase the hardness.例文帳に追加

成膜中に炭素の水素結合のσ電子と二重結合のπ電子を励起する波長の光を膜表面に照射して炭素結合に置き換えることで、水素結合と二重結合の割合を抑えて、硬度を上げる。 - 特許庁

Those nanoparticles are used in a magnetic recording medium whose surface has adhering organic chemicals capable of forming carbon, and has an average particle diameter of 7 nm or less with a particle distribution (distribution width (σ)/particle diameter (D)) of 0.1 or less.例文帳に追加

磁気記録媒体に用いられ、カーボンを生成可能な有機化合物が表面に付着してなる磁気記録媒体用ナノ粒子、数平均粒径が７ｎｍ以下である磁気記録媒体用ナノ粒子、粒度分布（分布幅（σ）／粒子直径（Ｄ））が０．１以下である磁気記録媒体用ナノ粒子である。 - 特許庁

Accordingly, the solid activated carbon electrode which is obtained with the carbonization heat treatment of the compact after rolling treatment has a smaller thickness and its thickness dispersion σ has an extremely small value of approximately 0.010 or less, as compared with those simply molded by a roll mill or by an extrusion molding.例文帳に追加

そのため、その圧延処理を施された成形体を炭化熱処理することにより得られる固体活性炭電極は、単にプレス成形や押出成形によって成形しただけの成形体に比較して、薄く且つ厚みばらつきσが0.010 程度以下と著しく小さくなる。 - 特許庁

The carbon fiber material has 0.83-0.94 ratio A1/A2 of the measured value A1 of π*/σ* on the outermost surface and the maximum value A2 in a single fiber obtained by measurement of the cross section of the single fiber according to an electron energy loss spectroscopy using a field emission type electron microscope.例文帳に追加

本発明の炭素繊維材料の単繊維断面を電界放出型電子顕微鏡を用いて、電子エネルギー損失分光法で測定して得られるπ＊／σ＊の最表面測定値Ａ１と単繊維内部最高値Ａ２との比Ａ１／Ａ２が０．８３〜０．９４である。 - 特許庁

To provide a method for efficiently producing an organic compound of which halogen atoms are substituted with nucleophilic agent by allowing the halogen compound having the halogen atom that is connected to the carbon atoms forming the σ bond with four atoms in the molecule to react with a nucleophilic agent.例文帳に追加

４つの原子とσ結合を形成する炭素原子に結合したハロゲン原子を分子内に有するハロゲン化合物と求核剤とを反応させて、該ハロゲン原子が求核剤に由来する置換基で置き換わった有機化合物を高収率、かつ高効率で製造する方法を提供する。 - 特許庁