نتایج جستجو برای: اسپکتروسکوپی ftir
تعداد نتایج: 20583 فیلتر نتایج به سال:
Fourier transform infrared (FTIR) microscopic imaging uses a combination of an FTIR spectrometer with a microscope and Focal Plane Array (FPA) detector. The method has been recognized as a powerful and versatile imaging tool in many disciplines, ranging from biomedical research through to materials science, art conservation and forensics. The Field Of View (FOV) depends on both the magnifi cati...
در این پایان نامه، به لحاظ نظری برخی از اکسی اسیدهای گوگرد در دو فاز گازی و آبی با استفاده از روش های محاسباتی ccsd و mp2 با مجموعه پایه ی 6-311++g(d,p) بررسی شده است. اسیدهای مورد بررسی شامل h2so، h2so2، h2so3 و h2so4 هستند. این ترکیبات از نظر شیمی اتمسفری، شیمی احتراق و شیمی معدنی حائز اهمیت هستند. این ترکیبات از لحاظ ساختاری، انرژی، ترموشیمی، خواص مولکولی (انرژی یونش، انرژی الکترون-خواهی، ا...
The evolution of papermaking from XII century, in Europe, was characterized by continuous changes of fibrous and non-fibrous materials as cellulose, wood pulp, sizing agents, fillers and coatings. In this study, the composition of many ancient paper documents is analysed by means of non-destructive Fourier Transform Infrared Spectroscopy (FTIR) in order to identify the main components of paper ...
In this report, we present a novel spectroscopic method of follow-up during chemotherapy treatment for B- and T-cell childhood leukemia patients. We isolated peripheral lymphocytes from blood drawn from patients before and after the chemotherapy and collected Microscopic FTIR (FTIR-MC) spectra of the isolated lymphocytes. Our results showed that nucleic acids content decreased in both types of ...
Ground-based Fourier Transform Infra-Red (FTIR) measurements are an important component of the global atmospheric monitoring system. Their essential role in validating satellite measurements requires a precise documentation of their quality. Here we present an extensive quality documentation of ground-based FTIR O3 profiles. This is done in the form of theoretical and empirical error estimation...
Abstract Nano-Fourier-transform infrared spectroscopy (nano-FTIR) combines with scanning probe microscopy (SPM) techniques and enables spectroscopic imaging of molecular electronic properties matter at nanometer spatial resolution. The can be used to derive chemical mappings, i.e. the distribution concentrations species contained in a given sample. However, due sequential principle underlying S...
Atmospheric carbonyl sulfide (OCS) variation from 1992–2004 by ground-based solar FTIR spectrometry N. M. Deutscher, N. B. Jones, D. W. T. Griffith, S. W. Wood, and F. J. Murcray Department of Chemistry, University of Wollongong, Wollongong, NSW, Australia National Institute of Water and Atmospheric Research, Lauder, Central Otago, New Zealand Department of Physics, University of Denver, Denver...
PROBLEM Historically, hydrogen has been employed in a variety of industrial chemical processes. Typically, the purity requirements for this hydrogen have tolerated contaminant levels ranging from ppm to low percentages, depending upon the application. The use of hydrogen has now expanded into novel applications such as alternative fuel for use in transportation and stationary electrical generat...
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