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Showing 1 to 12 of 6919 entries
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Contrast agents for diagnostic ultrasound: development and evaluation of polymer-coated microbubbles.

Biomaterials

Wheatley MA, Schrope B, Shen P.
PMID: 2090309
Biomaterials. 1990 Nov;11(9):713-7. doi: 10.1016/0142-9612(90)90033-m.

Although the concept of an ultrasound contrast agent dates from Gramiak's work in 1968 in which indocyanine green was injected into the ascending aorta and heart, no universally accepted contrast agent for ultrasound now exists. This is primarily due...

Examination of corneal proteoglycans and glycosaminoglycans by rotary shadowing and electron microscopy.

International journal of biological macromolecules

Scott JE, Cummings C, Greiling H, Stuhlsatz HW, Gregory JD, Damle SP.
PMID: 2125466
Int J Biol Macromol. 1990 Jun;12(3):180-4. doi: 10.1016/0141-8130(90)90029-a.

Proteoglycans (PGs) from cornea and their relevant glycosaminoglycan (GAG) chains, dermatan sulphate (DS) and keratin sulphate (KS), were examined by electron microscopy following rotary shadowing, and compared with hyaluronan (HA), chondroitin sulphate (CS), alginate, heparin, heparan sulphate (HS) and...

Influence of mixing disinfectant solutions into alginate on working time and accuracy.

Journal of dentistry

Rosen M, Touyz LZ.
PMID: 1939821
J Dent. 1991 Jun;19(3):186-8. doi: 10.1016/0300-5712(91)90014-p.

Possible transfer of pathogens from dental surgery to dental laboratory is of concern to the profession. This study investigates changes in the working time and accuracy of an alginate impression material when mixed with solutions of selected disinfectants rather...

Hybridoma cells in a protein-free medium within a composite gel perfusion bioreactor.

Cytotechnology

Shen BQ, Greenfield PF, Reid S.
PMID: 7765787
Cytotechnology. 1994;16(1):51-8. doi: 10.1007/BF00761779.

A composite gel system has been developed combining the chemical and physical properties of calcium alginate and agarose gels. The results of growing composite gel immobilized hybridoma SPO1 cells in a protein-free medium within a fluidized-bed perfusion bioreactor are...

Chitosan and sodium alginate based bioadhesive tablets for intraoral drug delivery.

Biological & pharmaceutical bulletin

Miyazaki S, Nakayama A, Oda M, Takada M, Attwood D.
PMID: 7920448
Biol Pharm Bull. 1994 May;17(5):745-7. doi: 10.1248/bpb.17.745.

Bioadhesive tablets for intraoral drug delivery were prepared by directly compressing the drug with a mixture of chitosan and sodium alginate in weight ratios of 4:1, 1:1 and 1:4, and the adhesion and release characteristics of the prepared systems...

Microbial contamination in two antimicrobial and four control brands of alginate impression material.

The Journal of prosthetic dentistry

Rice CD, Dykstra MA, Feil PH.
PMID: 1507139
J Prosthet Dent. 1992 Apr;67(4):535-40. doi: 10.1016/0022-3913(92)90086-p.

Previous investigations have revealed commercial alginate impression material to be contaminated with viable microorganisms. Some manufacturers are now producing alginate materials that contain antimicrobial agents. The purpose of this study was to test and compare two antimicrobial and four...

Alginates: biosyntheses and some structure-function relationships relevant to biomedical and biotechnological applications.

Biochemical Society transactions

Skjåk-Braek G.
PMID: 1633956
Biochem Soc Trans. 1992 Feb;20(1):27-33. doi: 10.1042/bst0200027.

No abstract available.

[The dimensional stability of hydrophilic impression materials after application of a disinfectant].

Deutsche zahnarztliche Zeitschrift

Stoll R, Segschneider F, Stachniss V, Jürgensen R.
PMID: 1817870
Dtsch Zahnarztl Z. 1991 Nov;46(11):718-21.

The influence of a disinfectant solution containing glutaraldehyde on the dimensional stability of 2 alginate and 4 elastomeric impression materials has been investigated. Die models were measured using a computer-controlled method and compared to the master die to assess...

Gel permeation chromatography--multi-angle laser light scattering characterization of the molecular mass distribution of 'Pronova' sodium alginate.

Biochemical Society transactions

Horton JC, Harding SE, Mitchell JR.
PMID: 1889670
Biochem Soc Trans. 1991 Apr;19(2):510-1. doi: 10.1042/bst0190510.

No abstract available.

Immersion disinfection of irreversible hydrocolloid impressions with sodium hypochlorite. Part II: Effect on gypsum.

The International journal of prosthodontics

Vandewalle KS, Charlton DG, Schwartz RS, Reagan SE, Koeppen RG.
PMID: 7993542
Int J Prosthodont. 1994 Jul-Aug;7(4):315-22.

This study investigated the effects of various immersion times and concentrations of sodium hypochlorite on irreversible hydrocolloid impressions and resultant gypsum casts. Irreversible hydrocolloid impressions of a test die were immersed for 1, 5, or 10 minutes in water...

The controlled release of prednisolone using alginate gel.

Pharmaceutical research

Sugawara S, Imai T, Otagiri M.
PMID: 8165187
Pharm Res. 1994 Feb;11(2):272-7. doi: 10.1023/a:1018963626248.

In a release study of alginate gel beads, swelling and erosion of the beads were observed at pH 6.8, whereas no swelling occurred at pH 1.2. The amount of released prednisolone (PL) was greater at pH 6.8 than at...

Physico-chemical interaction between sodium alginate (ALG-Na), polyvinylpyrrolidone (PVP), sodium carboxymethylcellulose (CMC-Na) and solvent.

Acta poloniae pharmaceutica

Górecki M, Bugaj J.
PMID: 7863792
Acta Pol Pharm. 1994;51(2):191-4.

Physico-chemical interactions between sodium alginate (ALG-Na), polyvinylpyrrolidone (PVP), sodium carboxymethylcellulose (CMC-Na) and solvent were examined. The performed studies involve effect of concentration of macromolecule compounds, electrolytes and pH value of the system. Non-Newtonian system were described by pseudoplasic coefficient...

Showing 1 to 12 of 6919 entries