翻訳と辞書 Words near each other ・ Near-Earth supernova ・ Near-equatorial orbit ・ Near-equilibrium enzymatic flux transfer networks ・ Near-extremal black hole ・ Near-fall ・ Near-far problem ・ Near-field (mathematics) ・ Near-field electromagnetic ranging ・ Near-field magnetic induction communication ・ Near-field optics ・ Near-field scanner ・ Near-field scanning optical microscope ・ Near-front vowel ・ Near-horizon metric ・ Near-infrared signature management technology ・ Near-infrared spectroscopy ・ Near-infrared window in biological tissue ・ Near-Life Experience ・ Near-me area network ・ Near-miss Johnson solid ・ Near-open central vowel ・ Near-open front unrounded vowel ・ Near-open vowel ・ Near-ring ・ Near-semiring ・ Near-sourcing ・ Near-surface geophysics ・ Near-term digital radio ・ Near-threatened species ・ Nearables Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Near-infrared spectroscopy ： ウィキペディア英語版 Near-infrared spectroscopy Near-infrared spectroscopy (NIRS) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from about 700 nm to 2500 nm). Typical applications include pharmaceutical, medical diagnostics (including blood sugar and pulse oximetry), food and agrochemical quality control, and combustion research, as well as research in functional neuroimaging, sports medicine & science, elite sports training, ergonomics, rehabilitation, neonatal research, brain computer interface, urology (bladder contraction), and neurology (neurovascular coupling). ==Theory== Near-infrared spectroscopy is based on molecular overtone and combination vibrations. Such transitions are forbidden by the selection rules of quantum mechanics. As a result, the molar absorptivity in the near-IR region is typically quite small. One advantage is that NIR can typically penetrate much farther into a sample than mid infrared radiation. Near-infrared spectroscopy is, therefore, not a particularly sensitive technique, but it can be very useful in probing bulk material with little or no sample preparation. The molecular overtone and combination bands seen in the near-IR are typically very broad, leading to complex spectra; it can be difficult to assign specific features to specific chemical components. Multivariate (multiple variables) calibration techniques (e.g., principal components analysis, partial least squares, or artificial neural networks) are often employed to extract the desired chemical information. Careful development of a set of calibration samples and application of multivariate calibration techniques is essential for near-infrared analytical methods. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Near-infrared spectroscopy」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.