Dissolution of Mercury from Amalgam into Saline Solution

1987 ◽  
Vol 66 (1) ◽  
pp. 33-37 ◽  
Author(s):  
T. Okabe ◽  
J. Ferracane ◽  
C. Cooper ◽  
H. Matsumoto ◽  
M. Wagner
Keyword(s):  
Intermetallic Compounds ◽  
Saline Solution ◽  
Nacl Solution ◽  
Mercury Ions

Dissolution of mercury from amalgams and some intermetallic compounds found in the amalgam structure, such as γ1, γ2, and β1, was examined during one week of aging in 0.9% NaCl solution at 37°C. The amount of mercury released from γ1(30.2 μg/cm2) was at least 13 times that released from amalgam (0.5 - 2.2 μg/cm2) and five times that released from β1(5.7 μg/cm2). γ 2 released the least amount of mercury (0.46 μg/cm2). The study revealed that as high as 55% of the mercury ions liberated from the amalgams and the amalgam phases was adsorbed onto the walls of the vials in which the specimens were aged.

Corrosion of polycrystalline ZnSe by alternating high voltage in a saline solution

1991 ◽  
Vol 6 (4) ◽  
pp. 667-669
Author(s):  
Joseph King
Keyword(s):  
Grain Boundary ◽  
High Voltage ◽  
Salt Solution ◽  
Saline Solution ◽  
Prolonged Exposure ◽  
Low Voltage ◽  
Mechanical Damage ◽  
Chemical Vapor ◽  
Nacl Solution ◽  
Chemical Vapor Deposited

Prolonged exposure of chemical vapor deposited, polycrystalline ZnSe to high ac voltages in the presence of a 1 molal NaCl solution induces severe mechanical damage. The damage takes the form of defects which originate at the surface and grow intergranularly into the bulk with a bush-like morphology. Neither exposure to the salt solution in the absence of the high voltage nor low voltage dc electrolytic exposure produces the defects. The damage may be associated with an intergranular hydride phase or grain boundary impurity segregations present or formed during the environmental exposure.

Effect of the sample form on the corrosion behavior of steels for concrete in 3% NaCl medium

2021 ◽  
Vol 109 (2) ◽  
pp. 201
Author(s):  
Laidi Babouri ◽  
Cheikh Mokrani ◽  
Yassine El Mendili
Keyword(s):  
Electron Microscopy ◽  
Linear Polarization ◽  
Saline Solution ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
Tafel Polarization ◽  
Eds Analysis ◽  
Corrosion Of Steel ◽  
Surface Morphologies ◽  
Scanning Electron

Corrosion of steel constitutes a major preoccupation in the field of civil engineering and the building sector. In this paper, we investigated the electrochemical behavior of two steel specimens with different forms (latched steel and smooth steel) in a 3 wt.% NaCl solution. For this purpose, we studied the steel samples by linear polarization, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The surface morphologies of the substrates were examined by scanning electron microscopy coupled with energy diffraction spectroscopy (SEM/EDS). Results of linear polarization, Tafel polarization curves and EIS show that latched steel (LS) is more susceptible to corrosion than smooth steel (SS) in saline solution. Gravimetric and SEM/EDS analysis after 10 days of immersion confirmed the results obtained by electrochemical methods. All of our results are in agreement and demonstrate that the sample form plays a key role in corrosion resistance.

scholarly journals Comparison of Corrosion Resistance in Physiological Saline Solution of Two Austenitic Stainless Steels – 316LV and REX734

2017 ◽  
Vol 11 (2) ◽  
pp. 91-95 ◽  
Author(s):  
Eliza Romańczuk ◽  
Zbigniew Oksiuta
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Saline Solution ◽  
Austenitic Stainless Steels ◽  
Physiological Saline ◽  
Nacl Solution ◽  
Corrosion Properties ◽  
Physiological Saline Solution ◽  
Superior Corrosion Resistance ◽  
Lower Nickel

AbstractIn this work two austenitic stainless steels, REX734 and 316LV were tested in terms of their microstructure and corrosion properties. The REX734 is a newer generation stainless steel, with modified chemical composition, in comparison to the 316LV grade. Potentiodynamic study of corrosion resistance was conducted in physiological saline solution (0.9% NaCl solution). In spite of the similarities of microstructure, grain size and phase structure in both materials, the corrosion tests revealed that the REX734, with lower nickel and higher nitrogen content, had better corrosion resistance than 316LV. Repassivation potential in the REX734 was almost six times higher than for the 316LV steel. Superior corrosion resistance of the REX734 steel was also confirmed by surface observations of both materials, since bigger and more densely distributed pits were detected in 316LV alloy.

scholarly journals Effects of combined midazolam and propofol in anesthesia induction and recovery of cats undergoing ovariohisterectomy

2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4269 ◽  
Author(s):  
Diogo Gorayeb de Castro ◽  
Juliana De Araújo Caldeira ◽  
Fernanda Corrêa Devito ◽  
Samanta Rios Melo ◽  
Silvia Renata Gaido Cortopassi
Keyword(s):  
Tracheal Intubation ◽  
Saline Solution ◽  
Healthy Adult ◽  
The Other ◽  
Anesthesia Induction ◽  
Nacl Solution ◽  
Blinded Study ◽  
Adult Cats ◽  
Solution Volume

<p>The objective of this study was to determine the effects of propofol and midazolam on induction of anesthesia in cats undergoing ovariohysterectomy, measured in terms of the quality of tracheal intubation, anesthesia induction, cardiorespiratory effects, and recuperation period. Thirty healthy adult cats were pretreated with acepromazine and morphine. After 30 min, they were divided into three groups: PG (n = 10), in which induction was performed with only intravenous propofol at doses required for intubation; MPG (n = 8), in which animals received intravenous midazolam (0.3 mg kg-1) administered over 30 s, followed by administration of propofol as in PG; and PMG (n = 9), in which propofol was first administered at a rate of 4 mg kg-1 min-1, after which midazolam was administered (0.3 mg/kg), followed by re-administration of propofol. In order to perform a blinded study, the PG and PMG received a 0.9% NaCl solution volume similar to the midazolam dose before induction (0.06 mL/kg). Similar to the other groups, the PG and MPG received (0.06 mL kg-1) saline 30 s after administration of propofol. In order to mimic the administration of midazolam, the saline solution was administered for 30s. The PG received 11.0 ± 1.38 mg kg-1 propofol, a greater dose than that administered to the PMG (p &lt; 0.001) and MPG (p &lt; 0.01), which received 7.9 ± 1.92 and 9.1 ± 2.20 mg kg-1, respectively. There were no differences in the intubation scores between groups. Previous use of midazolam did not affect agitation or excitement in cats; both sequences of propofol-midazolam administration are feasible, but the propofol-midazolam sequence was superior due to the lower propofol dose.</p>

scholarly journals Cambios en el perfil electroforético sérico de Lutjanus analis (Cuvier, 1828) en respuesta a la infección aguda por Listonella (sin. Vibrio) anguillarum

2020 ◽  
Vol 2 (3) ◽  
pp. 132
Author(s):  
Mauro Nirchio ◽  
Ana Rita Rossi
Keyword(s):  
Intramuscular Injection ◽  
Saline Solution ◽  
Acute Infection ◽  
Vibrio Anguillarum ◽  
Agarose Gel ◽  
Nacl Solution ◽  
Inflammatory Reactions ◽  
Listonella Anguillarum ◽  
Solution Saline ◽  
Short Time

The results of electrophoresis of the blood serum of Lutjanus analis in agarose gel from two groups of fishes: (a) fish exposed to live Listonella anguillarum diluted in 0.9% NaCl solution (saline) by intramuscular injection and (b) control specimens injected with the saline solution are provided. Differences in the serum protein profiles of the two groups of specimens were observed. The method here employed, seems to be useful in detecting potential markers for monitoring infection or inflammatory reactions in L. analis after acute infection by L. anguillarum and has the advantage to allow easy analysis of several samples in a short time.

Comparative study of corrosion and tribocorrosion resistance of some biomaterials

2012 ◽  
Vol 1464 ◽  
Author(s):  
J. Takadoum ◽  
J. El Mansouri ◽  
S. Ivanescu ◽  
D. Stanciu
Keyword(s):  
Material Removal ◽  
Detrimental Effect ◽  
Open Circuit Potential ◽  
Saline Solution ◽  
Open Circuit ◽  
Nacl Solution ◽  
Passivating Film ◽  
Ringer’S Solution ◽  
Phosphate Buffered Saline ◽  
Alumina Ball

ABSTRACTCorrosion and tribocorrosion tests have been conducted on titanium, Ti-6Al-4V and Ti-10Zr-10Nb-5Ta alloys. The experiments have been conducted in four different electrolytes: NaCl solution, Ringer’s solution, phosphate buffered saline solution (PBS) with and without an addition of bovine serum albumin (BSA).The electrochemical study showed that, whatever the electrolyte, the passivating film formed on Ti-10Zr-10Nb-5Ta surface is more stable than those obtained on the surface of titanium or Ti-6Al-4V alloy. In addition, Ti-10Zr-10Nb-5Ta presents a better resistance to corrosion. In PBS solution, open circuit potential (OCP) moved to more positive value in comparison with results obtained in NaCl and Ringer’s solutions, whereas addition of BSA moved OCP value towards more negative potential indicating a detrimental effect.Tribocorrosion tests have been conducted at OCP when sliding against an alumina ball. Friction coefficient, current and volume of material removal at the end of tests have been measured and the results discussed. The influence of the presence of proteins molecules has been particularly analyzed.

Influence of Various Heat Treatment on Corrosion Resistance of As-Extruded Mg-9Li-3Al-2.5Sr Alloys

2014 ◽  
Vol 788 ◽  
pp. 41-44 ◽  
Author(s):  
Yuan Qing Yu ◽  
Xiao Dong Peng ◽  
Hong Yu Yi ◽  
Jun Wei Liu
Keyword(s):  
Corrosion Resistance ◽  
Intermetallic Compounds ◽  
Unit Volume ◽  
Aging Treatment ◽  
Corrosion Current ◽  
Immersion Test ◽  
Corrosion Process ◽  
Nacl Solution ◽  
Boundary Area ◽  
Solution Treated

The corrosion behavior of Mg-9Li-3Al-2.5Sr alloy, solution treated at 400°C for 3h with various aging temperature (Ta; Ta=75,100,125,150,175°C), was investigated in 3.5% NaCl solution by immersion test and polarization curve measurement. Experimental results suggest that the alloy aged at150°Cfor 6h exhibits the highest corrosion resistance while the alloy treated at 75°C for 6h presents lowermost corrosion resistance. The corrosion resistance of the alloy is related to the grain size and the distribution of Al4Sr compound. The segregation of intermetallic compounds can accelerate the corrosion process. It was found that duo to the proper solid-solution and aging treatment, intermetallic compounds were distributed evenly along the grain boundaries, which can reduce the corrosion rate and corrosion current. In addition,with the growth of grain, the decrease of the grain boundary area per unit volume lead to improvement of corrosion resistance of the alloys.

scholarly journals PENGARUH ZAT KIMIA PADA BERBAGAI SUHU TERHADAP DENYUT JANTUNG KATAK (Rana sp.) DALAM UPAYA PENGEMBANGAN BUKU PETUNJUK PRAKTIKUM FISIOLOGI HEWAN

2019 ◽  
Vol 7 (2) ◽  
pp. 123
Author(s):  
Sry Purnamasari ◽  
Muhammad Wahyu Setiyadi
Keyword(s):  
Heart Rate ◽  
Room Temperature ◽  
Saline Solution ◽  
Qualitative Approach ◽  
Development Model ◽  
Frog Heart ◽  
Research Approach ◽  
Nacl Solution ◽  
Anova Analysis ◽  
Animal Physiology

The purpose of this study is to determine the effect of chemicals on various temperatures in the heart of frogs (Rana sp.) And to compile valid animal physiology practical instructions. This research is a type of experimental research (true experimental) and this research approach is a qualitative approach. Samples were given 3 different treatments, namely controls with room temperature of 250C-300C, temperature of 00C-100C, and 300C-400C. The results of the study using ANOVA (Analysis of Variance) showed the effect of NaCl solution on the frog heart rate (Rana sp.) Namely Fcount of 5.18 while Ftable of 3.59 so that the results of this study were declared significant. While the effect of saline solution on the frog heart rate (Rana sp.) Is Fcount of 1.78 while Ftable is 3.59 so the results of this study are declared non-significant. So it can be concluded that, NaCl solution at various temperatures significantly influences the frog heart rate (Rana sp.), While saline solution at various temperatures does not significantly influence the frog heart rate (Rana sp.). The process of developing this animal physiology practical guide uses a 3-D development model, which consists of the define, design, and develope stages. The results of the study showed that the practicum instructions for animal physiology were valid, said to be valid because the practicum instructions prepared and developed had met the "valid" criteria.

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