Effect of silver nitrate on interfacial gap detection under polymeric dental restoration in CP-OCT imaging

A rapid silver-impregnation technique on ultra-thin sections for Electron Microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100147053 ◽

1993 ◽

Vol 51 ◽

pp. 242-243

Author(s):

K. Chien ◽

R.C. Heusser ◽

M.L. Jones ◽

R.L. Van de Velde

Keyword(s):

Electron Microscopy ◽

Silver Nitrate ◽

Silver Impregnation ◽

Sodium Borate ◽

Renal Diseases ◽

Distilled Water ◽

Thin Sections ◽

Impregnation Technique ◽

Centrifuge Tube ◽

Simplified Procedure

Silver impregnation techniques have been used for the demonstration of the complex carbohydrates in electron microscopy. However, the silver stains were believed to be technically sensitive and time consumming to perform. Currently, due to the need to more specifically evaluate immune complex for localization in certain renal diseases, a simplified procedure in conjunction with the use of the microwave has been developed and applied to renal and other biopsies. The procedure is as follows:Preparation of silver methenamine solution:1. 15ml graduated, clear polystyrene centrifuge tube (Falcon, No. 2099) was rinsed once with distilled water.2. 3% hexamethylene tetramine (methenamine) was added into the centrifuge tube to the 6ml mark.3. 3% silver nitrate was added slowly to the methenamine to the 7ml mark while agitating. (Solution will instantly turn milky in color and then clear rapidly by mixing. No precipitate should be formed).4. 2% sodium borate was added to the solution to the 8ml mark, mixed and centrifuged before use.

Download Full-text

Temporal-Gap Detection by Cochlear Prosthesis Users

Journal of Speech Language and Hearing Research ◽

10.1044/jshr.3204.849 ◽

1989 ◽

Vol 32 (4) ◽

pp. 849-856 ◽

Cited By ~ 12

Author(s):

John P. Preece ◽

Richard S. Tyler

Keyword(s):

Magnitude Estimation ◽

Stimulus Level ◽

Electrode Placement ◽

Frequency Effect ◽

Gap Detection ◽

Cochlear Prosthesis ◽

Sensation Level

Minimum-detectable gaps for sinusoidal stimuli were measured for three users of a multi electrode cochlear prosthesis as functions of stimulus level, frequency, and electrode place within the cochlea. Stimulus level was scaled by sensation level and by growth-of-loudness functions generated for each condition by direct magnitude estimation. Minimum-detectable gaps decreased with increase in either sensation level or loudness, up to a plateau. When compared at equal sensation levels, the minimum-detectable gaps decreased with frequency increases. The frequency effect on minimum-detectable gaps is reduced if the data are considered at equal loudness. Comparison across place of stimulation within the cochlea showed minimum-detectable gaps to be shorter for more basal electrode placement at low stimulus levels. No differences in minimum-detectable gap as a function of place were found at higher stimulus levels.

Download Full-text

Effect of silver nitrate on some mechanical properties of heat polymerizing acrylic resins

Mustansiria Dental Journal ◽

10.32828/mdj.v14i1.768 ◽

2019 ◽

Vol 14 (1) ◽

pp. 110

Author(s):

Assiss. Prof. Dr. Sabiha Mahdi Mahdi ◽

Dr. Firas Abd K. Abd K.

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Silver Nitrate ◽

Surface Hardness ◽

Mechanical Tests ◽

Hardness Tester ◽

Acrylic Resins ◽

The Difference

Aim: The aimed study was to evaluate the influence of silver nitrate on surfacehardness and tensile strength of acrylic resins.Materials and methods: A total of 60 specimens were made from heat polymerizingresins. Two mechanical tests were utilized (surface hardness and tensile strength)and 4 experimental groups according to the concentration of silver nitrate used.The specimens without the use of silver nitrate were considered as control. Fortensile strength, all specimens were subjected to force till fracture. For surfacehardness, the specimens were tested via a durometer hardness tester. Allspecimens data were analyzed via ANOVA and Tukey tests.Results: The addition of silver nitrate to acrylic resins reduced significantly thetensile strength. Statistically, highly significant differences were found among allgroups (P≤0.001). Also, the difference between control and experimental groupswas highly significant (P≤0.001). For surface hardness, the silver nitrate improvedthe surface hardness of acrylics. Highly significant differences were statisticallyobserved between control and 900 ppm group (P≤0.001); and among all groups(P≤0.001)with exception that no significant differences between control and150ppm; and between 150ppm and 900ppm groups(P>0.05).Conclusion: The addition of silver nitrate to acrylics reduced significantly the tensilestrength and improved slightly the surface hardness.

Download Full-text

Silver Nitrate Particlesnanotoxicity using Cell Culture and Apoptosis (Genetic and Cell Study)

Indian Journal Of Applied Research ◽

10.15373/2249555x/june2014/184 ◽

2011 ◽

Vol 4 (6) ◽

pp. 1-8

Author(s):

Ragia M Hegazy ◽

◽

Eman Farouk ◽

Taghreed G Kharboush

Keyword(s):

Cell Culture ◽

Silver Nitrate ◽

Cell Study

Download Full-text

Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

Communications in Physics ◽

10.15625/0868-3166/29/3/13763 ◽

2019 ◽

Vol 29 (3) ◽

Author(s):

Mai Ngọc Tuan Anh

Keyword(s):

Hydrogen Peroxide ◽

Silver Nanoparticles ◽

Ascorbic Acid ◽

Silver Nitrate ◽

Sodium Borohydride ◽

Trisodium Citrate ◽

Synthesis And Characterization ◽

Silver Nanoplates ◽

Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

Download Full-text