Results 241 to 250 of about 5,028,792 (285)
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Titrimetric determination of aminobenzoic acids
Talanta, 1985A novel titrimetric method for determination of aminobenzoic acids is based on their reaction with excess of bromine to form N-bromo-2,4,6-tribromoaniline, which liberates an equivalent amount of iodine when treated with iodide. The method is applicable to the aminobenzoic acids in the range 0.1-5.0 mg, with a recovery ranging from 96 to 99.7% and a ...
D. Amin +2 more
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Thermoluminescence of hydroxy and aminobenzoic acids
Journal of Luminescence, 1972Abstract The thermoluminescence glow spectra of ortho, meta and para-hydroxy and aminobenzoic acids have been investigated as obtained through UV excitation at low temperature. The trap depths are found to range from 0.13-0.39 eV for the various acids, while the trap density turns out to be highest in the ortho-forms.
F. Aramu, M. Serra, G. Spano, V. Maxia
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THE PHOTOCHEMISTRY OF p‐AMINOBENZOIC ACID
Photochemistry and Photobiology, 1992Abstract— We have studied the photoreactions occurring when p‐aminobenzoic acid (PABA), a component of some sunscreens, is irradiated in aqueous solution. These studies were carried out in the presence and absence of oxygen, using light of Λ= 254 nm as well as light of wavelengths greater than 290 nm.
Martin D. Shetlar +2 more
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Further Sunscreen Studies of Aminobenzoic Acid
Archives of Dermatology, 1972Further studies with 5% hydroalcoholic solution of aminobenzoic acid showed the following: (1) A total of 60μl/sq cm usually gave complete protection against 30 minimal erythemal doses (MEDs). (2) Daily application greatly enhanced the amount and duration of protection.
Albert M. Kligman, Andrzej Langner
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THE PHOTOPHYSICS OF p‐AMINOBENZOIC ACID
Photochemistry and Photobiology, 1995Abstract— The lowest‐lying allowed UV transition in p‐aminobenzoic acid (PABA) is assigned Γ→1La based on quantitative absorption and fluorescence studies, as well as semiempirical PM3 multielec‐tron configuration interaction calculations. The oscillator strengths, fluorescence quantum efficiencies and lifetimes are reported for PABA in several polar,
Bala R. Ramachandran, Arthur M. Halpern
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Journal of Agricultural and Food Chemistry, 2019
Colletotrichum fructicola, a fungal pathogen that causes bitter rot disease in pears, has recently emerged in Eastern Asia and caused enormous economic losses and crop penalties.
P. Laborda +6 more
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Colletotrichum fructicola, a fungal pathogen that causes bitter rot disease in pears, has recently emerged in Eastern Asia and caused enormous economic losses and crop penalties.
P. Laborda +6 more
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Production of Antifungal p-Aminobenzoic Acid in Lysobacter antibioticus OH13.
Journal of Agricultural and Food Chemistry, 2018Among Lysobacter species, Lysobacter antibioticus has been demonstrated to be an interesting source of antimicrobial metabolites for the biocontrol of plant diseases.
P. Laborda +4 more
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Crystal Growth & Design, 2019
The engineering of pharmaceutical cocrystals has been effectively utilized to improve the physicochemical properties such as stability and solubility, and thus it could optimize the solid formation...
X. Pan +10 more
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The engineering of pharmaceutical cocrystals has been effectively utilized to improve the physicochemical properties such as stability and solubility, and thus it could optimize the solid formation...
X. Pan +10 more
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Chronic Urticaria Secondary to Aminobenzoic Acid
Archives of Dermatology, 1984An underlying cause may be identified in fewer than 20% of patients with chronic urticaria. 1 Examination of these patients should proceed in stages guided by clues obtained from history and physical examination. Possible underlying causes of chronic urticaria may include infections, medications, chemicals, foods, inhalants, contactants, and ...
Danny R. Thomas +2 more
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Carbohydrate Research, 2008
Crystal structures of cyclomaltoheptaose (beta-cyclodextrin) complexes with p-aminobenzoic acid and o-aminobenzoic acid have been determined by single-crystal X-ray diffraction. The space group of the beta-cyclodextrin-p-aminobenzoic acid complex is P2(1) with a host:guest stoichiometry of 1:1, and that of the beta-cyclodextrin-o-aminobenzoic acid ...
Yimin Zhang, Shanbao Yu, Feng Bao
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Crystal structures of cyclomaltoheptaose (beta-cyclodextrin) complexes with p-aminobenzoic acid and o-aminobenzoic acid have been determined by single-crystal X-ray diffraction. The space group of the beta-cyclodextrin-p-aminobenzoic acid complex is P2(1) with a host:guest stoichiometry of 1:1, and that of the beta-cyclodextrin-o-aminobenzoic acid ...
Yimin Zhang, Shanbao Yu, Feng Bao
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