Pyrite oxidation by nitrate and nitrite in sodium bicarbonate solution under anoxic and abiotic conditions

2022 ◽  
pp. 105203
Author(s):  
Katrien Hendrix ◽  
Nele Bleyen ◽  
Thierry Mennecart ◽  
Pierre Eloy ◽  
Eric M. Gaigneaux ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Pyrite Oxidation ◽  
Sodium Bicarbonate Solution ◽  
Abiotic Conditions ◽  
Nitrate And Nitrite

Comprehensive study of the toothpaste containing fluoride and 67% aqueous sodium bicarbonate solution

2021 ◽  
Vol 26 (2) ◽  
pp. 137-143
Author(s):  
S. N. Gromova ◽  
N. A. Guzhavina ◽  
E. A. Falaleeva ◽  
E. P. Kolevatykh ◽  
А. V. Elikov ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Oral Care ◽  
Sodium Bicarbonate Solution ◽  
Comprehensive Treatment ◽  
Aqueous Sodium ◽  
Aqueous Sodium Bicarbonate ◽  
Periodontal Inflammation ◽  
Aqueous Sodium Bicarbonate Solution ◽  
Inflammatory Effect

Relevance. A wide variety of oral care products is available nowadays. Sometimes aggressive advertising rather than doctor’s advice determines our patients’ choice. In our research, we provide evidence of the clinical use of toothpaste containing fluoride and sodium bicarbonate.Materials and methods. During four weeks, we followed up a group of students who used the toothpaste containing 1400 ppm fluoride and 67% aqueous sodium bicarbonate solution. The clinical, biochemical and microbiological tests and saliva crystallization score assessed the characteristics stated by the manufacturer.Results. The statistically significant correlation between all studied criteria is evidence of the effectiveness of the toothpaste. In addition to the significant remineralization and antiplaque effect, biochemical and microbiological tests confirmed the anti-inflammatory effect of the toothpaste. An immediate cleaning effect was observed after the first brushing as well as in long-term use.Conclusion. Improvement of oral hygiene indices and reduction of periodontal inflammation confirmed the successful result of the comprehensive treatment of chronic gingivitis.

Influence of kinins and angiotensin II on the regulation of papillary blood flow

1988 ◽  
Vol 255 (4) ◽  
pp. F690-F698 ◽  
Author(s):  
R. J. Roman ◽  
M. L. Kaldunski ◽  
A. G. Scicli ◽  
O. A. Carretero
Keyword(s):  
Blood Flow ◽  
Angiotensin Ii ◽  
Sodium Bicarbonate ◽  
Sodium Excretion ◽  
Sodium Bicarbonate Solution ◽  
Urine Osmolality ◽  
Urine Flow ◽  
Water Excretion ◽  
Cortical Blood Flow ◽  
Blood Flows

The influence of kinins and angiotensin II on the regulation of renal cortical and papillary blood flow and sodium and water excretion was examined in rats. Superficial cortical and papillary blood flows were measured using a laser-Doppler flowmeter. Papillary blood flow increased 50% after enalaprilat (60 micrograms/kg) and phosphoramidon (5.5 micrograms.kg-1.min-1) were given along with 0.3 M sodium bicarbonate solution to inhibit degradation of kinins and enhance urinary kallikrein activity. Infusion of a kinin antagonist, D-Arg-Hyp-Thi-D-Phe-bradykinin (5 micrograms/min), returned papillary blood flow to control levels. Urine flow and sodium excretion increased after the administration of the kininase inhibitors and sodium bicarbonate, while glomerular filtration rate (GFR) and outer cortical blood flow were unaltered. The kinin antagonist did not alter sodium and water excretion in rats receiving the kininase inhibitors and bicarbonate. Administration of the kinin antagonist alone lowered papillary blood flow by 20%, without affecting outer cortical blood flow or GFR. Urine flow decreased and urine osmolality increased after the rats received the kinin antagonist, but sodium excretion remained unaltered. To assess the role of angiotensin II in the control of papillary blood flow, kinin receptors were blocked by infusion of an antagonist, and the effects of enalaprilat and saralasin were studied. Papillary blood flow increased after blockade of the angiotensin II system in rats receiving the kinin antagonist. These results indicate that the kallikrein-kinin and renin-angiotensin systems participate in the regulation of papillary blood flow.

scholarly journals Evaluation of Isotonic Sodium Bicarbonate Solution for Alkalizing Effects in Conscious Calves

2002 ◽  
Vol 64 (8) ◽  
pp. 699-703 ◽  
Author(s):  
Kazuyuki SUZUKI ◽  
Izumi ABE ◽  
Shigehiro IWABUCHI ◽  
Shigehisa TSUMAGARI ◽  
Tsutomu MATSUMOTO ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Sodium Bicarbonate Solution

Gas Liquid Separation Using a GLCC in a Sodium Bicarbonate Solution Mining Operation

2001 ◽  
Author(s):  
Robbie M. Lansangan ◽  
Mike Huffman
Keyword(s):  
Liquid Phase ◽  
Sodium Bicarbonate ◽  
Water Injection ◽  
Sodium Bicarbonate Solution ◽  
Field Tests ◽  
Control Valve ◽  
Mining Operation ◽  
Liquid Density ◽  
Field Development ◽  
Solution Mining

Abstract Nahcolite is a naturally occurring sodium bicarbonate mineral found in subsurface formations. American Soda LLP conducted field tests to prove that nahcolite can be deep mined using low-cost conventional solution mining method. The process involved the injection of hot, high pressure water down wells into a nahcolite deposit about 2,600 feet below the surface where the mineral is dissolved and brought to the surface for recovery. The monitoring and optimization of recovery efficiency based on scores of upstream process parameters, such as water injection rate, required the monitoring of produced liquid density. This was done initially with a mass meter located immediately downstream of the well head. Co-production of small amounts of gas, mainly methane and carbon dioxide, entrained in the liquid phase prevented the accurate measurement of the solution density using a Coriolis meter technology. Premier Instruments provided a remedy with a gas liquid cylindrical cyclone (GLCC© 1) separator properly sized and engineered for the process requirements. A gas control valve with liquid level feedback was used to eliminate the entrained gas in the liquid phase. This strategy proved to be functional which allowed American Soda to proceed with the field development. Today, 26 production wells employ the GLCC separator at each production well.

scholarly journals Effect of Intravenous Infusion of Isotonic Sodium Bicarbonate Solution on Acidemic Calves with Diarrhea

2002 ◽  
Vol 64 (12) ◽  
pp. 1173-1175 ◽  
Author(s):  
Kazuyuki SUZUKI ◽  
Tosihide KATO ◽  
Gensei TSUNODA ◽  
Shigehiro IWABUCHI ◽  
Kimi ASANO ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Intravenous Infusion ◽  
Sodium Bicarbonate Solution

THE ACUTE EFFECTS IN MAN OF RAPID INTRAVENOUS INFUSION OF HYPERTONIC SODIUM BICARBONATE SOLUTION

Medicine ◽  
1955 ◽  
Vol 34 (1) ◽  
pp. 51-95 ◽  
Author(s):  
R B SINGER ◽  
J K CLARK ◽  
E S BARKER ◽  
A P CROSLEY ◽  
J R ELKINTON
Keyword(s):  
Sodium Bicarbonate ◽  
Intravenous Infusion ◽  
Sodium Bicarbonate Solution ◽  
Acute Effects

scholarly journals Effect of Two Antioxidants Agents on Microtensile Bond Strength to Bleached Enamel

2016 ◽  
Vol 27 (5) ◽  
pp. 532-536 ◽  
Author(s):  
Marina Studart Alencar ◽  
◽  
Juliana Fraga Soares Bombonatti ◽  
Rafael Massunari Maenosono ◽  
Ana Flávia Soares ◽  
...  
Keyword(s):  
Bond Strength ◽  
Sodium Bicarbonate ◽  
Artificial Saliva ◽  
Sodium Bicarbonate Solution ◽  
Sodium Ascorbate ◽  
Scanning Electron Microscopy Data ◽  
Microtensile Bond Strength ◽  
Etch And Rinse ◽  
Bovine Enamel

Abstract This in vitro study evaluated the effect of sodium bicarbonate and sodium ascorbate on the microtensile bond strength of an etch-and-rinse system to bleached bovine enamel. Sixty bovine enamel blocks (4x4 mm) were flattened and randomly allocated into 5 groups: G1 (negative control): without treatment; G2 (positive control): bleached with 35% hydrogen peroxide (HP); G3: bleached and stored for 7 days in artificial saliva before restorative procedures; G4: bleached and treated with 10% sodium bicarbonate solution for 5 min; G5: bleached and treated with 10% sodium ascorbate hydrogel for 15 min. HP gel was applied twice (20 min each, except in G1) and the adhesive restorations were performed. After 24 h, the specimens were sectioned into sticks and submitted to microtensile bond strength testing with a crosshead speed of 0.5 mm/min (n=12). As a complementary visual observation, the enamel surfaces of the G1 and G2 specimens were evaluated with scanning electron microscopy. Data were analyzed by one-way ANOVA (p<0.05). The means (standard deviation) were: G1: 24.22±7.74; G2: 18.29±5.88; G3: 40.88±7.95; G4: 19.95±5.67 and G5: 24.43±6.43. Adhesive failures were predominant in all groups. The comparison between the treatments indicates that waiting 7 days after bleaching is still the most effective approach. When this waiting period is not possible, application of sodium ascorbate or sodium bicarbonate seems to be a good alternative. Therefore, the practicality of obtaining sodium bicarbonate in the bleaching kits and its higher stability enables its clinical use.

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