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guanidine

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Journal Article
Published: 01 December 2010
Clays and Clay Minerals (2010) 58 (6): 757–765.
...Motoharu Kawano; Jinyeon Hwang Abstract Guanidine and imidazole are important functional molecules that constitute the side chain of basic amino acids (arginine and histidine); these molecules are capable of interacting with mineral surfaces. However, little information is available about...
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Schematic structures of organic compounds (<span class="search-highlight">guanidine</span>, imidazole, pyrazole, ...
Published: 01 December 2010
Figure 1. Schematic structures of organic compounds (guanidine, imidazole, pyrazole, and pyrrole) used in this study.
Journal Article
Published: 02 July 2018
Journal of Foraminiferal Research (2018) 48 (3): 186–192.
... assessed three methods of DNA preservation (air-drying, freezing with or without seawater, and Guanidine lysis buffer treatment with or without EDTA (Ethylenediaminetetraacetic acid)). Our study produced the following results: 1) there were no significant differences in DNA preservation when samples were...
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ATR-FTIR spectra of amorphous silica used in adsorption experiments of guan...
Published: 01 December 2010
Figure 7. ATR-FTIR spectra of amorphous silica used in adsorption experiments of guanidine at pH 8.1, 9.0, and 9.5, and guanidinium ions (10.0 mM solution at pH 6.8) and H 2 O (pure water).
Journal Article
Published: 01 June 1974
American Mineralogist (1974) 59 (5-6): 598–603.
...S. E. Kesson; J. R. Holloway Abstract Three fluid compositions in the C-O-H-N system, each with nominal mole fraction of H 2 O = 0.25, were used for comparative determinations of the solidus of synthetic albite at 4.4kbar. The fluids were generated by the decomposition of guanidine nitrate CH 5 N 3...
Journal Article
Published: 01 April 2022
Clays and Clay Minerals (2022) 70 (2): 182–195.
... the growth of gram-positive bacteria, gram-negative bacteria, fungi, and yeasts (Asadi et al. 2021 ; Peng et al. 2021 ). The guanidine group was easily protonated to be positively charged, so PHMB could be adsorbed on the negatively charged bacterial cell membranes, and then destroy the cell membranes...
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Journal Article
Published: 01 October 2010
Clays and Clay Minerals (2010) 58 (5): 725.
...) in nontronite NAu-2 Motoharu Kawano and Jinyeon Hwang. Influence of guanidine, imidazole and some heterocyclic compounds on dissolution rates of amorphous silica David M.K. Murphy and Robert J. Gilkes. Clay minerals in saprolite overlying hydrothermally altered and unaltered rocks, Vera epithermal gold...
Journal Article
Published: 01 October 2019
Clays and Clay Minerals (2019) 67 (5): 450–459.
... of the amorphous silica dissolution with an enhancement factor of ~5.5–6.5 was confirmed in the experiments using the 10.0 mM guanidine and imidazole, which are functional molecules that constitute the side chain of arginine and histidine, respectively. Pyrazole and pyrrole, which are five-membered heterocyclic...
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Journal Article
Published: 01 April 2021
Clays and Clay Minerals (2021) 69 (2): 254–262.
... , Y. ( 2001 ). Visible-light photocatalysis in nitrogen-doped titanium oxides . Science , 293 , 269 – 271 . Chagas , C. A. , Pfeifer , R. , Rocha , A. B. , & Teixeira da Silva , V. ( 2012 ). Synthesis of niobium carbonitride by thermal decomposition of guanidine...
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Journal Article
Published: 01 October 2014
Journal of Foraminiferal Research (2014) 44 (4): 440–450.
... microscope and either dried or immediately placed in guanidine lysis buffer before being sent to Switzerland. Some specimens were photographed with a scanning electron microscope before DNA extraction, and 11 of them have been illustrated on Figures 4–8 . Figure 1 Map of sampling localities...
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Journal Article
Published: 01 February 2012
Clays and Clay Minerals (2012) 60 (1): 52–62.
.... Xia L.Y. (2009) Flotation of aluminosilicate minerals using alkyl-guanidine collectors . The Transactions of Nonferrous Metals Society of China , 19 , 228 – 234 . Hu Y. (2003) Progress in flotation de-silica . The Transactions of Nonferrous Metals Society of China , 13 , 656...
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Journal Article
Published: 01 April 2002
Journal of Foraminiferal Research (2002) 32 (2): 173–176.
... (Qiagen) or the guanidine method described by Tkach and Pawlowski (1999) . PCR amplifications were performed on a total volume of 50 μl with an amplification profile consisting of 40 cycles of 30 s at 94°C, 30 s at 50°C, and 120 s at 72°C, followed by 5 min at 72°C for final extension. The amplified PCR...
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Journal Article
Published: 01 July 2002
European Journal of Mineralogy (2002) 14 (4): 849–853.
... within ± 0.2% 0 (1σ). Our analyses of NBS-28 give 9.65± 0.15 % 0 (1σ on the mean). The oxygen yields, measured on CO2, were determined manometrically and are within the precision limits (±2%) of the expected values. Water was converted to CO 2 for the isotopic analyses using guanidine...
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Journal Article
Published: 20 April 2018
Journal of Foraminiferal Research (2018) 48 (2): 156–163.
... s with an integration time of 0.7 s. Obtained data were smoothed and plotted using OriginPro 9 software ( Amini et al., 2014 ). The DNA from eight randomly selected specimens of C. szymborska was extracted using guanidine lysis buffer ( Pawlowski, 2000 ); two extractions were carried out...
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Journal Article
Published: 01 June 2014
Clays and Clay Minerals (2014) 62 (3): 235–242.
... York . Kawano M. Hwang J. ( 2010a ) Enhancement of dissolution rates of amorphous silica by interaction with bovine serum albumin at different pH conditions . Clays and Clay Minerals , 58 , 272 – 279 . Kawano M. Hwang J. ( 2010b ) Influence of guanidine, imidazole...
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Journal Article
Published: 01 April 2021
Journal of Foraminiferal Research (2021) 51 (2): 81–91.
... per site. The DNA was extracted from three specimens, including the parent and offspring of Srinivasania sundarbanensis , using a guanidine lysis buffer ( Pawlowski, 2000 ). All three specimens were previously imaged for morphotaxonomic documentation before being subjected to DNA extraction...
Journal Article
Published: 01 December 2019
Clays and Clay Minerals (2019) 67 (6): 471–480.
... . Soil Science Society of America Journal , 55 , 43 – 48 . Khashirova , S. Y. , Musaev , Y. , Mikitaev , A. K. , Malkanduev , Y. A. , & Ligidov , M. K. ( 2009 ). Hybrid nanocomposites based on guanidine methacrylate monomer and polymer and layered aluminosilicates...
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Journal Article
Published: 01 January 2011
Journal of Foraminiferal Research (2011) 41 (1): 3–13.
... recovery, the sediment samples were gently washed over a set of sieves with cold sea-water and stored at ~2°C. The >125-μm residues were scanned for living foraminifera. Specimens for molecular study were transferred one by one into guanidine or AP1 (DNAEasy, Qiagen) extraction buffer, while those...
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Journal Article
Published: 01 October 2011
Clays and Clay Minerals (2011) 59 (5): 446–458.
... Tetramethyl thiuram disulfide 0.2 Diphenyl guanidine 0.3 Antioxidant D 1.0 OMMT or FR-HOMMT 0, 5, 10, 15, 20 The tensile properties of the vulcanizates were measured using the dumbbell specimens (6 mm wide in cross section) according to the Chinese National Standard GB 528-82. The value...
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Journal Article
Published: 01 November 2004
American Mineralogist (2004) 89 (11-12): 1709–1716.
...-associated polysaccharides (CAP) were isolated, essentially using the procedures described for P. carterae CAP by Marsh et al. (1992) . The coccoliths were isolated by extracting the cells successively with guanidine hydrochloride and Triton-X 100 solutions to remove organic material not associated...
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