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A brief review of the US regulatiry issues concerning the devlopment, commercialization and application of industrial pesticides in the leather industry / Kevin D. Drake in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIV, N° 8 (10/1999)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIV, N° 8 (10/1999) . - p. 303-306 Titre : A brief review of the US regulatiry issues concerning the devlopment, commercialization and application of industrial pesticides in the leather industry Type de document : texte imprimé Auteurs : Kevin D. Drake, Auteur ; Wallace E. Puckett, Auteur ; Dennis L. Barbee, Auteur Année de publication : 1999 Article en page(s) : p. 303-306 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The use of antimicrobial products (bactericides and fungicides) in the tannery is not new. However the legislation regarding which actives are permitted by Federal and State regulatory agencies and for what application and level are constantly changing. Tanners and suppliers alike must be cognizant of these changes.The following overview is meant to serve as strictly an educational overview of what the current restrictions, demands and penalties are regarding the discovery, commercialization, and application of pesticides in the manufacture of leather. A complete review of FIFRA will be provided.This paper outlines the path of a pesticide active or formulation through inception to obtaining the proper U.S. EPA and State registration(s). Toxicology, exposure, environmental fate (worker health and safety) study demands will be discussed. The introduction of any new raw material to the leather industry is not an easy task. Introducing new microbiocides, however, poses an even greater challenge due to the special regulations and substantial costs associated with their development. This article will highlight the process that Buckman Laboratories goes through when bringing a new microbiocide to the leather marketplace. En ligne : https://drive.google.com/file/d/1f-_20-_n2DWp-uYeYLhETlPcFVuxmbui/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4445 [article]

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In search of a sampling mode for dependable lastometer values of crust/finished goat skins / S. Chakraborti in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIV, N° 8 (10/1999)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIV, N° 8 (10/1999) . - p. 307-314 Titre : In search of a sampling mode for dependable lastometer values of crust/finished goat skins Type de document : texte imprimé Auteurs : S. Chakraborti, Auteur ; C. S. Mishra, Auteur Année de publication : 1999 Article en page(s) : p. 307-314 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Pilot validation trials gave results opposite to those from laboratory drum experiments designed to improve Lastometer values of goat skins by varying fatliquor i.e. blank run skins gave higher values than trial runs even on repetition. Also, there was wide variation of Lastometer values within a skin and between batches. These anomalies made us look for a more representative and dependablesampling mode for Lastometer evaluation of goat-skins than the presently prevalent sampling mode from the official area of a skin as a prerequisite for designing Lastometer value improvement work. After a reasonably large number of Lastometer determinations on crust and finished goat skins and data analysis, a new sampling mode which will truly represent the Lastometer property of a skin was identified and confirmed. This new sampling mode on a requisite number of skins for a particular batch size would permit dependable differentiation between batches of skins with different Lastometer values and would help conduct Lastometer improvement work. En ligne : https://drive.google.com/file/d/1EjObu-WpQva6hkue7HMwq2KIU9BehiLp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4446 [article]

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Sampling strategies for infrared spectroscopic studies of raw, pickled, and in-process chrome tanned bovine hides / Dennis C. Shelly in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIV, N° 8 (10/1999)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIV, N° 8 (10/1999) . - p. 315-321 Titre : Sampling strategies for infrared spectroscopic studies of raw, pickled, and in-process chrome tanned bovine hides Type de document : texte imprimé Auteurs : Dennis C. Shelly, Auteur ; Eleanor M. Brown, Auteur Année de publication : 1999 Article en page(s) : p. 315-321 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Infrared spectroscopy is a powerful research tool for studying structure and structural changes in complex biomaterials, such as animal hides and leather. Recent advances in optical design and materials have made available accessories that enable the sampling of biomaterials as liquids, gels, pastes, powders and porous solids. For this report, the Gemini, a new sampling device for Horizontal Attenuated Total Reflection (HATR) and Diffuse Reflectance (DR) FTIR spectroscopy was evaluated as an option for the study of bovine hides, in successive stages of chrome tanning. Specifically, raw, pickled and chrome sulfate-treated bovine hides were subjected to HATR FTIR analysis so that changes in collagen structure as a function of chemical treatment could be observed. Also, freeze dried hides were examined by DR FTIR in order to detect the presence and structure of collagen-chromium complexes. Comparisons of HATR and DR FTIR show that the expected chemical changes in the hide can be observed. The quality of the spectra obtained is comparable to that reported by biomedical research groups. The Gemini shows excellent versatility for in-processing hide sampling, enabling the detailed study of many truly unique chemical and biochemical phenomena of the tanning process. En ligne : https://drive.google.com/file/d/1OqKnhFW_PX1dlceATzeV8rtURk-I5ZVM/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4447 [article]

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Viscometric determination of collagenase activity in the presence of high salt concentration / S. M. Mozersky in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIV, N° 8 (10/1999)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIV, N° 8 (10/1999) . - p. 322-325 Titre : Viscometric determination of collagenase activity in the presence of high salt concentration Type de document : texte imprimé Auteurs : S. M. Mozersky, Auteur ; David G. Bailey, Auteur Année de publication : 1999 Article en page(s) : p. 322-325 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In a previous publication from this laboratory, a simple, precise procedure was described for viscometric assay of collagenase activity. While applicable under usual conditions, the procedure fails with samples containing high concentrations of salt. High concentrations of NaCl are present in media in which halophilic microorganisms are grown, and assay of these media for collagenase activity was needed in our study of damage inflicted on salted hides by the halophiles. We here describe a simple modification of the original procedure which permits assay of samples containing as much as 4 M NaCl. The modification, in essence, adds only a single step in which the sample is diluted, prior to the measurement of its viscosity, to reduce its NaCl concentration to £ 0.2 M. The revised procedure provides researchers and leather manufactures with the ability to measure the production of collagenase activity by halophiles. En ligne : https://drive.google.com/file/d/1jEt4bG7gg9BQ450beSXKmUsH8KI1HQBi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4448 [article]

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