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24 results for “Absorption spectra”
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Research ArticleOpen accessIn the keywordsX-RAYS LUMINESCENCE, OPTICAL AND PHYSICAL STUDIES OF BI2O3-B2O3-SM2O3 GLASSES SYSTEMS. Rakpanich, J. Kaewkhao, N. Srisittipokakun et al.Sm3+-doped bismuth borate glasses of the composition (50-x) SiO2: 50B2O3: xSm2O3 (where x = 0.00, 0.50, 1.00, 1.50, 2.00 and 2.50 mol%) have been synthesized by conventional melt quenching technique. In order to understand the role of Sm2O3 in bismuth borate glasses, the density, molar volume, refractive index and optical absorption were investigated. The results show that density, molar volume … …Physics International, Vol. 4, Issue 1 · 18 Jul 2013 · 7,464 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOptical and Physical Properties of Bismuth Borate Glasses Doped With Dy3+Pichet Limsuwan, Jakrapong Kaewkhao, Parnuwat Chimalawong, Smit InsiripongThis study reports on physical and optical properties of Dy3+ doped bismuth borate glass. The glasses containing Dy3+ in (70-x)B2O3:30Bi2O3:xDy2O3 (where x = 0.0-2.5 mol%) have been prepared by melt-quenching method. In order to understand the role of Dy2O3 in these glasses, the density, molar volume and optical spectra were investigated. The results show that molar volume of the glasses … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 7,355 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDose Response and Optical Properties of Dyed Poly Vinyl Alcohol-Trichloroacetic Acid Polymeric Blends Irradiated with Gamma-RaysSusilawati, Aris DoyanProblem statement: The effects of gamma irradiation on optical properties of cresol-red dyed Poly Vinyl Alcohol (PVA) blended with Trichloroacetic Acid (TCA) for possible use in dosimetry and measurement of radiation dose in gamma rays have been studied using both Raman spectroscopy and UV-Visible spectrophotometer method. Approach: The dosimeters are composed of Poly Vinyl Alcohol (PVA), Trichloroacetic Acid (TCA) at … …American Journal of Applied Sciences, Vol. 6, Issue 12 · 31 Dec 2009 · 8,088 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effect of Trilobatin on Bovine Serum Albumin: Interaction Mechanism and Molecular DockingYuhan Zhai, Yuqing Zhang, Yaping Li et al.Understanding the transport and distribution of small molecules in vivo is aided by studying their interactions with proteins. As a natural sweetener, trilobatin possesses several biological activities. However, uncertainty surrounds the trilobatin and Bovine Serum Albumin (BSA) interaction mechanism. In this study, the binding types, number of binding sites and binding constants of trilobatin interaction with BSA were studied by … …American Journal of Biochemistry and Biotechnology, Vol. 20, Issue 1 · 29 Mar 2024 · 4,843 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparison of Ferrous Ion Chelating Properties of Collagen Peptides from Dried and Fresh Cod SkinMengqian Chen, Cen Chen, Junchao Wu et al.Fish skin is a potential source of collagen and collagen is a protein source of bioactive peptides including iron chelating peptides. The aim of this study is to compare physicochemical properties of collagen extracted from fresh and dried cod skin and the ferrous ion chelating properties of collagen hydrolysates. Then the fresh and dried cod skin extracted collagen was hydrolyzed … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 3 · 2 Jul 2021 · 7,155 accessesView PDFCite
Research ArticleOpen accessIn the abstractWhite Light Generation in Dy3+-Doped Sodium Lead Alumino Borosilicate Glasses for W-LED ApplicationsK. Vijaya Babu, A. Subba Rao, V. Madhuri, K. SureshExcitation and emission spectra of sodium lead alumino borosilicate glass doped with different concentrations of Dy3+ have been reported. The concentration of Dy3+ were varied from 0.5 to 1.5 mol%. As a result of 385 nm excitation wavelength, the luminescence spectra showed three characteristic bands at 482 nm and 575 nm and 665 nm. These absorption bands were attributed to … …Journal of Aircraft and Spacecraft Technology, Vol. 4, Issue 1 · 3 Jun 2020 · 6,857 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpectral and Luminescence Properties of Manganese Doped Sodium Lead Alumino Borosilicate Glass SystemK. Vijaya Babu, A. Subba Rao, K. Naresh Kumar, M. Venugopala RaoNa2O-PbO-Al2O3-B2O3-SiO2 glasses mixed with different concentrations of MnO (ranging from 0.3 to 0.9 mol %) was prepared by melt quenching technique. The samples were characterized by X-ray diffraction technique, Optical absorption and Photo luminescence technique. A prepared glass sample is confirmed by X-ray diffraction spectra. The optical absorption spectra of these glasses exhibited a predominant broad band peak at 21,052 … …Journal of Aircraft and Spacecraft Technology, Vol. 3, Issue 1 · 22 Nov 2019 · 7,114 accessesView PDFCite
Research ArticleOpen accessIn the abstractFar-Red Spectrum of Second Emerson Effect: A Study Using Dual-Wavelength Pulse Amplitude Modulation FluorometryV. S. Lysenko, T. V. Varduny, E. I. Simonovich et al.Non-additive enhancement of the photosynthesis excited by simultaneous illumination with far-red light and light of shorter wavelengths is called as "second Emerson effect". Its action spectra are well-known as a photosynthetic yield's dependence on light wavelength in red (630-690 nm) spectral region at a constant-wavelength far-red illumination near 700-715 nm. However, the opposite dependence of the photosynthetic yield's of shorter … …American Journal of Biochemistry and Biotechnology, Vol. 10, Issue 4 · 19 Nov 2014 · 7,957 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermining Optical Constants of Selenium Thin Films using the Envelope MethodNehad M. Tashtoush, Osamah ALkasassbehTwo Selenium thin films were deposited on glass substrates using thermal evaporation technique. The optical constants (refractive index, absorption coefficient and extinction coefficient and energy gap) were calculated using the Transmittance (T) spectrums of the films in the spectral range of 500-900 nm. The envelope method was used to determine optical constants. The calculated refractive index was found to be … …American Journal of Applied Sciences, Vol. 10, Issue 2 · 15 Feb 2013 · 6,337 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Initio Theoretical Study for the Electronic Spectra of β-ThioxoketonesRita S. Elias, Bahjat A. Saeed, Dhiyaa K. MuslemProblem statement: β-thioxoketones exist as equilibrium mixtures of the tautomeric enol and enethiol forms which interconvert very rapidly by intramolecular chelate proton transfer. Accordingly their electronic spectra in the u.v.-visible region exhibit absorption bands arising from transitions within the electronic systems involved in these tautomers. Approach: The structures of several β-thioxoketones were geometrically optimized using B3LYP/cc-pVTZ, B3LYP/6-311++G (2d,p), PM2/6-311++G(2d,p) and … …American Journal of Applied Sciences, Vol. 9, Issue 1 · 24 Nov 2011 · 7,854 accessesView PDFCite