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Showing 1-29 of 29 results for "PHR1216" within Papers
N Tanaka et al.
Journal of dentistry, 33(7), 577-583 (2005-07-12)
This study examined temporary restorative resins that use non-phthalate ester plasticizers. Three non-phthalate plasticizers were tested: tri-ethyl citrate (TEC), tri-butyl citrate (TBC), and di-butyl sebacate (DBS). The experimental resins were compared with resins that use a phthalate ester plasticizer (di-butyl
T Quinten et al.
Journal of pharmaceutical sciences, 100(7), 2858-2870 (2011-01-22)
Sustained-release matrix tablets were developed by injection moulding using metoprolol tartrate (MPT) and ethylcellulose (EC) as sustained-release agent. Dibutyl sebacate was selected as plasticiser. The influence of matrix composition, plasticiser concentration, and drug load on drug release was evaluated. The
P M Satturwar et al.
Drug development and industrial pharmacy, 29(8), 877-884 (2003-10-23)
The film-forming and coating properties of a new biomaterial, hydrogenated rosin (HR), is investigated in the present communication. Films produced by casting method are studied for mechanical, (tensile strength, elongation, and Young's modulus), water vapor transmission, and moisture absorption characteristics.
D Stark et al.
Biotechnology and bioengineering, 83(4), 376-385 (2003-06-12)
A novel in situ product removal (ISPR) method that uses microcapsules to extract inhibitory products from the reaction suspension is introduced into fermentation technology. More specifically, L-phenylalanine (L-Phe) was transformed by Saccharomyces cerevisiae to 2-phenylethanol (PEA), which is inhibitory toward
Guang Hong et al.
Dental materials journal, 23(2), 94-99 (2004-08-04)
The purpose of this study was to determine the influence of plasticizer content on the tensile bond strength of heat-cured acrylic soft denture liners to a denture base resin. Differences among materials were significant, except for 100 wt% Dibutyl Sebacate
Maarit Tarvainen et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 19(5), 363-371 (2003-08-09)
The aim of this study was to investigate the ability of n-alkenyl succinic anhydrides (n-ASAs) to improve the film-forming characteristics of a novel coating polymer, potato starch acetate degree of substitution 2.8 (SA). n-ASAs were also applied to improve the
T Quinten et al.
Drug development and industrial pharmacy, 37(2), 149-159 (2010-07-10)
It was the aim of the present study to develop sustained-release matrix tablets by means of injection molding of ethylcellulose (EC) and polyethylene oxide (PEO) mixtures and to evaluate the influence of process temperature, matrix composition, and viscosity grade of
Kangarlou Sogol et al.
International journal of pharmaceutics, 408(1-2), 1-8 (2010-11-26)
The object of this study was to investigate the influence of static and dynamic forces on mechanical properties of the biocompatible polymer ethyl cellulose. Similar polymeric films containing 40% (w/w) of the plasticizer dibutyl sebacate were subjected to tensile forces
M P Do et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 88(2), 342-350 (2014-05-17)
Novel in situ forming implants are presented showing a promising potential to overcome one of the major practical hurdles associated with local periodontitis treatment: limited adhesion to the surrounding tissue, resulting in accidental expulsion of at least parts of the
T Bussemer et al.
Drug development and industrial pharmacy, 29(6), 623-630 (2003-08-02)
The mechanical properties of polymer films used in pharmaceutical coatings of pulsatile drug delivery systems were evaluated in the dry and the wet state by a newly developed puncture test, which allowed the time-dependent measurement of the mechanical properties on
A Wyss et al.
Biotechnology and bioengineering, 87(6), 734-742 (2004-08-27)
A novel perstraction system using liquid-core microcapsules for pesticide and herbicide removal from aqueous environments is proposed. The microcapsules contain an oil, dibutyl sebacate, surrounded by a hydrogel membrane. The extraction efficiency of the capsules was demonstrated with atrazine, methylparathion
Thomas Quinten et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 71(1), 145-154 (2008-05-31)
The aim of this study was to develop sustained-release matrix tablets by means of injection moulding and to evaluate the influence of process temperature, matrix composition (EC and HPMC concentration) and viscosity grade of ethylcellulose (EC) and hydroxypropylmethylcellulose (HPMC) on
I J Hardy et al.
International journal of pharmaceutics, 311(1-2), 26-32 (2006-01-25)
The compression and compaction properties of plasticised high molecular weight USP2208 HPMC were investigated with the aim of improving tablet formation in HPMC matrices. Experiments were conducted on binary polymer-plasticiser mixtures containing 17 wt.% plasticiser, and on a model hydrophilic
Masato Nishijima et al.
Dental materials journal, 21(2), 118-132 (2002-09-20)
The estrogenic activity of phthalate esters for dental use as plasticizers was concerned. To study the feasibility of candidate chemicals for phthalate tissue conditioners, three candidate plasticizers, di-n-butyl sebacate, acetyl tributyl citrate and tri-n-butyl phosphate together with conventional plasticizers were
M A Abounassif et al.
Drug testing and analysis, 3(6), 373-379 (2011-06-24)
A novel poly (vinyl chloride) PVC membrane sensor for Fe(2+) ions is described. The sensor is based on the use of newly synthesized chiral 2,6-bis-(carboxamide methyl ester)pyridine derivative as neutral ionophore in plasticized PVC membrane. The sensor display a fast
Kit Frederiksen et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 91, 9-15 (2015-01-18)
Polymeric film-forming systems (FFSs) are potential drug delivery systems for topical application to the skin. The FFSs form thin and transparent polymeric films in situ upon solvent evaporation. Their application convenience and cosmetic attributes, superior to conventional semi-solids, may offer
Sogol Kangarlou et al.
International journal of pharmaceutics, 356(1-2), 153-166 (2008-03-22)
This research was conducted to investigate the physico-mechanical characteristics of the EC-based coating membranes plasticized with two informal ingredients of vitamin resources, cholecalciferol and alpha-tocopherol, with respect to the commercial plasticizer DBS. Proceeding the experiment, free thin polymer sheetings of
Masayuki Uchimaru et al.
Dental materials journal, 30(5), 691-699 (2011-09-29)
This study examined the antimicrobial/antifungal ability of a tissue conditioner containing a photocatalyst for Escherichia coli, Streptococcus mutans, Staphylococcus aureus and Candida albicans. The photocatalyst was mixed with tissue conditioners powders at concentrations of 0, 10, 15, and 20 wt%.
Sapna N Makhija et al.
Journal of controlled release : official journal of the Controlled Release Society, 89(1), 5-18 (2003-04-16)
A controlled porosity osmotic pump-based drug delivery system has been described in this study. Unlike the elementary osmotic pump (EOP) which consists of an osmotic core with the drug surrounded by a semipermeable membrane drilled with a delivery orifice, controlled
Maissa Y Salem et al.
Journal of AOAC International, 89(4), 976-986 (2006-08-19)
Four methods were developed for the determination of intact disopyramide phosphate in the presence of its degradation product. In the first and second methods, third-derivative spectrophotometry and first derivative of the ratio spectra were used. For the third-derivative spectrophotometric method
A Wyss et al.
Biotechnology and bioengineering, 91(2), 227-236 (2005-05-26)
The activity of penicillin acylase has been studied in aqueous and organic solvents, as free enzyme as well as immobilized within the membrane of liquid-core capsules. The activity of the enzyme is inhibited by the accumulation of the products of
B C Lippold et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 47(1), 27-32 (1999-05-11)
The release of the hydrophilic etofylline and the lipophilic propyphenazone (octanol/water partition coefficient PC = 0.35 and 119, respectively) from diffusion pellets coated with the aqueous ethyl cellulose dispersion Aquacoat ECD-30 and 20% dibutyl sebacate (DBS) as plasticizer is investigated
J Dredán et al.
International journal of pharmaceutics, 310(1-2), 25-30 (2006-01-27)
Molar refraction as well as refractive index has many uses. Beyond confirming the identity and purity of a compound, determination of molecular structure and molecular weight, molar refraction is also used in other estimation schemes, such as in critical properties
E Oh et al.
International journal of pharmaceutics, 188(2), 203-219 (1999-10-16)
The surface free energy parameters of ethylcellulose (EC) films were determined using the Lifshitz-van der Waals/acid-base approach and the influence of plasticizers on their surface energetics was assessed. Films were prepared by dip-coating glass slides in organic solvents containing EC
D Serp et al.
Biotechnology and bioengineering, 82(1), 103-110 (2003-02-06)
The bioconversion of L-phenylalanine to 2-phenylethanol by Saccharomyces cerevisiae in fed-batch experiments has shown that concentrations of 2-phenylethanol of >2.9 g/L have a negative impact on the oxidative capacity of the yeast. Without tight control on ethanol production, and hence
Yoshiya Hashimoto et al.
Dental materials journal, 23(3), 412-418 (2004-10-30)
We prepared prototype phthalate ester-free tissue conditioners (PFT) from a powder of poly(ethyl methacrylate) and a mixture of several liquids, including di-n-butyl sebacate, benzyl benzoate (BB), and ethanol. The estrogenic activities of the liquids in the PFT were measured by
Snezana Marković et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 88(3), 847-855 (2014-12-03)
We describe the development of an in-line monitoring approach for the fluid-bed drying and coating steps for the production of enteric coated pellets by NIR. Our results show that key pellet characteristics can be monitored in-line. Likewise, the finished product
Burdock AG et al.
Encyclopedia of Food & Color Additives, 1 (1997)
Minoru Ohta et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 44(5), 227-233 (2004-01-22)
Stabilizers (epoxidized linseed oil and epoxidized soybean oil) and plasticizers (acetyl tributyl citrate, diacetyl monolauryl glyceride and dibutyl sebacate) commonly used in polyvinylidene chloride (PVDC) films and extracts of such films were investigated for estrogenic and androgenic activity by means
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