1. The document reports on a new antimicrobial hydrogel coating composed of dimethyldecylammonium chitosan and poly(ethylene glycol) diacrylate that kills bacteria and fungi.
2. The proposed antimicrobial mechanism is that the positively charged hydrogel attracts and disrupts the negatively charged microbial membranes.
3. An animal study found the hydrogel coating to be biocompatible with rabbit eye tissue and non-toxic to cells.
Dr.Ir. Gatot Trimulyadi : The adsorption behavior of chitin and its concerns with various degree of deacetylization. This high adsorption capacity was ascribable primarily to its remarkable hydrophilicity in cooperation with the relatively high amino group content. It is indicate that the importance of hydrophlicity and suggest that, in order to develop adsorbents of high capacity, it is make indicate the importance of hydrophilicity essential to make chitin derivatives highly hydrophylic and yet insoluble in water.
Dyes, Drugs & Pesticides by Dr Pramod R Padolepramod padole
A] Dyes: Classification on the basis of structure and mode of application, Preparation and uses of Methyl orange, Crystal violet, Phenolphthalein , Alizarin and Indigo.
B) DRUGS:
Analgesic and antipyretics: Synthesis and uses of phenylbutazone. Sulpha drugs: Synthesis and uses of sulphanilamide and sulphadiazine. Antimalarials: Synthesis of chloroquine from 4,7-dichloroquinoline and its uses.
C] Pesticides: Insecticides: Synthesis and uses of malathion. Herbicides: Synthesis and uses of 2,4-dichloro phenoxy acetic acid (2,4-D). Fungicides: Synthesis and uses of thiram (tetramethyl thiuram disulphide).
Dr.Ir. Gatot Trimulyadi : The adsorption behavior of chitin and its concerns with various degree of deacetylization. This high adsorption capacity was ascribable primarily to its remarkable hydrophilicity in cooperation with the relatively high amino group content. It is indicate that the importance of hydrophlicity and suggest that, in order to develop adsorbents of high capacity, it is make indicate the importance of hydrophilicity essential to make chitin derivatives highly hydrophylic and yet insoluble in water.
Dyes, Drugs & Pesticides by Dr Pramod R Padolepramod padole
A] Dyes: Classification on the basis of structure and mode of application, Preparation and uses of Methyl orange, Crystal violet, Phenolphthalein , Alizarin and Indigo.
B) DRUGS:
Analgesic and antipyretics: Synthesis and uses of phenylbutazone. Sulpha drugs: Synthesis and uses of sulphanilamide and sulphadiazine. Antimalarials: Synthesis of chloroquine from 4,7-dichloroquinoline and its uses.
C] Pesticides: Insecticides: Synthesis and uses of malathion. Herbicides: Synthesis and uses of 2,4-dichloro phenoxy acetic acid (2,4-D). Fungicides: Synthesis and uses of thiram (tetramethyl thiuram disulphide).
Structural elucidation, Identification, quantization of process related impur...IOSR Journals
Major process related unknown impurity associated with the synthesis of Hydralazine hydrochloride bulk drug was detected by high performance liquid chromatography (HPLC) and was subjected to high resolution accurate liquid chromatography mass spectroscopy (HR/AM-LCMS) for identification. The proposed impurity was isolated from Hydralazine hydrochloride active pharmaceutical ingredient (API) by preparative chromatographic method and was injected on HPLC for comparison of retention time with that of the unknown process related impurity in Hydralazine hydrochloride. The molecular ion peak of preparatively isolated impurity and that of unknown process related impurity in Hydralazine hydrochloride were compared for confirmation. The postulated structure was unambiguously confirmed with the help of HR/AM- LC MS/MS, NMR and FTIR data proposed to be 1-(2-phthalazin-1-ylhydrazino)phthalazine (Hazh Dimer). This impurity of Hydralazine hydrochloride is not been previously reported. A rapid Acquity H-class gradient method with runtime of 15.0min was developed for Quantitation on Unisphere Cyno column and validated for parameters such as accuracy, precision, linearity and range, robustness. The LOD and LOQ of method were 0081% and 0.0246% respectively.
Spectroscopy letters volume 26 issue 3 1993 [doi 10.1080 00387019308011552] s...Al Baha University
Synthesis and Characterization of 2,2-Biimidazole Complexes of Oxocations of Molybdenum (VI, V) and Uranium(VI)
To cite this article: Samir S. Kandil & Loutfy H. Madkour (1993) Synthesis and Characterization of 2,2-Biimidazole Complexes of Oxocations of Molybdenum (VI, V) and Uranium(VI), Spectroscopy Letters: An International Journal for Rapid Communication, 26:3, 535-550, DOI: 10.1080/00387019308011552
To link to this article: http://dx.doi.org/10.1080/00387019308011552
2,2.-Biimidazole complexes of Moo2 , Moo2+ and U02f2 have been prepared and characterized by elemental analysis, conductance; and 'H NMR, IR and electronic spectra. Two types of complexes have been identified. Those obtained from slightly acidic solutions have the formulae MOO 22 (H bim)C12.2H20 'l, U02(H2bim)(Ac)2 2 and U02(H2bim)C12.2H20 whereas those from alkaline solutions have the formulae M0~0~(Hbim)~.2H~O 4, and M02(Hbim)2 (M = Mo(V1) 5, U(V1) 6). The infrared spectra of these complexes show characteristic biimidazole frequencies in the 3200-2500, 1550-1000 and 150 cm-l regions as well as metal oxygen double bonds in the 900 cm-l region. complex has been confirmed from 'H NMR signal ratios of The stoichiometries of the acetate
biimidazole to acetate protons at 7.3 and 2.3 ppm, respec- tively. The electronic spectrum of molybdenum(V) complex
showed d-d transition band at =13,500 cm-' in accord with that' reported for copper (d ) imidazole complexes; as well as peaks due to charge transfer bands at 30,000-26,000 c9-l.
Peaks assignable to BIM --+ U(V1) were located at ~26,600 cm . The most probable structures of these complexes have been suggested.
Ozone Detection in Pharmaceutical ContainersCharlotteBell
Presented at the Molecular Interactions in Biopharmaceutical Formulations: Can Stability be Rationalised and Predicted. Held by the Formulation Science and Technology Group of the Royal Society of Chemistry in association with the Academy of Pharmaceutical Sciences.
Os fatores de risco para aterosclerose dependem da situação anatômica das artérias. Estes slides são parte de uma bela aula do professor anotado, proferida no ADA de San Diego.
Structural elucidation, Identification, quantization of process related impur...IOSR Journals
Major process related unknown impurity associated with the synthesis of Hydralazine hydrochloride bulk drug was detected by high performance liquid chromatography (HPLC) and was subjected to high resolution accurate liquid chromatography mass spectroscopy (HR/AM-LCMS) for identification. The proposed impurity was isolated from Hydralazine hydrochloride active pharmaceutical ingredient (API) by preparative chromatographic method and was injected on HPLC for comparison of retention time with that of the unknown process related impurity in Hydralazine hydrochloride. The molecular ion peak of preparatively isolated impurity and that of unknown process related impurity in Hydralazine hydrochloride were compared for confirmation. The postulated structure was unambiguously confirmed with the help of HR/AM- LC MS/MS, NMR and FTIR data proposed to be 1-(2-phthalazin-1-ylhydrazino)phthalazine (Hazh Dimer). This impurity of Hydralazine hydrochloride is not been previously reported. A rapid Acquity H-class gradient method with runtime of 15.0min was developed for Quantitation on Unisphere Cyno column and validated for parameters such as accuracy, precision, linearity and range, robustness. The LOD and LOQ of method were 0081% and 0.0246% respectively.
Spectroscopy letters volume 26 issue 3 1993 [doi 10.1080 00387019308011552] s...Al Baha University
Synthesis and Characterization of 2,2-Biimidazole Complexes of Oxocations of Molybdenum (VI, V) and Uranium(VI)
To cite this article: Samir S. Kandil & Loutfy H. Madkour (1993) Synthesis and Characterization of 2,2-Biimidazole Complexes of Oxocations of Molybdenum (VI, V) and Uranium(VI), Spectroscopy Letters: An International Journal for Rapid Communication, 26:3, 535-550, DOI: 10.1080/00387019308011552
To link to this article: http://dx.doi.org/10.1080/00387019308011552
2,2.-Biimidazole complexes of Moo2 , Moo2+ and U02f2 have been prepared and characterized by elemental analysis, conductance; and 'H NMR, IR and electronic spectra. Two types of complexes have been identified. Those obtained from slightly acidic solutions have the formulae MOO 22 (H bim)C12.2H20 'l, U02(H2bim)(Ac)2 2 and U02(H2bim)C12.2H20 whereas those from alkaline solutions have the formulae M0~0~(Hbim)~.2H~O 4, and M02(Hbim)2 (M = Mo(V1) 5, U(V1) 6). The infrared spectra of these complexes show characteristic biimidazole frequencies in the 3200-2500, 1550-1000 and 150 cm-l regions as well as metal oxygen double bonds in the 900 cm-l region. complex has been confirmed from 'H NMR signal ratios of The stoichiometries of the acetate
biimidazole to acetate protons at 7.3 and 2.3 ppm, respec- tively. The electronic spectrum of molybdenum(V) complex
showed d-d transition band at =13,500 cm-' in accord with that' reported for copper (d ) imidazole complexes; as well as peaks due to charge transfer bands at 30,000-26,000 c9-l.
Peaks assignable to BIM --+ U(V1) were located at ~26,600 cm . The most probable structures of these complexes have been suggested.
Ozone Detection in Pharmaceutical ContainersCharlotteBell
Presented at the Molecular Interactions in Biopharmaceutical Formulations: Can Stability be Rationalised and Predicted. Held by the Formulation Science and Technology Group of the Royal Society of Chemistry in association with the Academy of Pharmaceutical Sciences.
Os fatores de risco para aterosclerose dependem da situação anatômica das artérias. Estes slides são parte de uma bela aula do professor anotado, proferida no ADA de San Diego.
Self explanatory really, this lecture looks at chiral auxiliaries. We will concentrate on oxazolidinones in alkylations, aldol reaction and the Diels-Alder reaction. There will be a couple examples of other auxiliaries.
This is the biggy, the one everyone wants to achieve. Here we will be looking at metal-based chiral catalysis. We will concentrate on bisoxazoline-based Lewis acid catalysis and then look at reductions before finishing with the ubiquitous Sharpless epoxidation and dihydroxylation.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
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A micro-review of the Baeyer-Villiger oxidation with recent (2012/2013) references from the literature; last updated on March 1 2013.
The Baeyer-Villiger Oxidation is a popular tool for the synthesis of esters and lactones.
See an animation at: http://www.harinchem.com/named_organic_reactions.html.
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