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Anthony Bertucci et al.
Bioorganic & medicinal chemistry letters, 21(2), 710-714 (2011-01-07)
The catalytic activity and the inhibition of a new coral carbonic anhydrase (CA, EC, from the scleractinian coral Stylophora pistillata, STPCA-2, has been investigated. STPCA-2 has high catalytic activity for the physiological reaction being less sensitive to anion and...
Alexandra P Ross et al.
International journal of nanomedicine, 8, 109-117 (2013-01-16)
Current titanium-based implants are often anodized in sulfuric acid (H(2)SO(4)) for color coding purposes. However, a crucial parameter in selecting the material for an orthopedic implant is the degree to which it will integrate into the surrounding bone. Loosening at...
Sabrina Alves Feitosa et al.
The journal of adhesive dentistry, 16(2), 147-154 (2013-09-13)
To evaluate the effect of the cementation strategy and mechanical cycling (MC) on the microtensile bond strength (MTBS) of feldspathic inlays cemented to premolars. Forty-eight human premolars were prepared and porcelain inlays were produced. Specimens were allocated into 3 groups...
Alert over South Korea toxic leaks.
Soo Bin Park
Nature, 494(7435), 15-16 (2013-02-08)
Fubo Luan et al.
Environmental science & technology, 46(21), 11995-12002 (2012-10-19)
Iron-bearing phyllosilicates strongly influence the redox state and mobility of uranium because of their limited hydraulic conductivity, high specific surface area, and redox reactivity. Standard extraction procedures cannot be accurately applied for the determination of clay-Fe(II/III) and U(IV/VI) in clay...
P Hooi et al.
Journal of dental research, 93(4), 412-416 (2014-02-12)
The dental literature is replete with "crunch the crown" monotonic load-to-failure studies of all-ceramic materials despite fracture behavior being dominated by the indenter contact surface. Load-to-failure data provide no information on stress patterns, and comparisons among studies are impossible owing...
Jun Li et al.
Journal of the American Chemical Society, 135(3), 982-985 (2013-01-11)
The exothermic F + H(2)O → HF + OH reaction has a decidedly "early" or "reactant-like" barrier. According to a naïve interpretation of the Polanyi's rules, translational energy would be more effective than vibrational energy in promoting such reactions. However...
Simon Klüpfel et al.
The Journal of chemical physics, 137(12), 124102-124102 (2012-10-02)
Self-consistent calculations using the Perdew-Zunger self-interaction correction (PZ-SIC) to local density and gradient dependent energy functionals are presented for the binding energy and equilibrium geometry of small molecules as well as energy barriers of reactions. The effect of the correction...
Karsten Klosa et al.
The journal of adhesive dentistry, 15(4), 377-383 (2013-03-28)
To evaluate in vitro the effect of using titanium tetrafluoride as an alternative etchant prior to the silanization of the bonding surface on the long-term resin bond strength to lithium disilicate ceramic. Disk-shaped specimens made of lithium disilicate ceramic were...
Sheila Pestana Passos et al.
The journal of adhesive dentistry, 15(5), 461-466 (2013-04-18)
To evaluate the microtensile bond strength (MTBS) of ceramic cemented to dentin varying the resin cement and ceramic shades. Two VITA VM7 ceramic shades (Base Dentine 0M1 and Base Dentine 5M3) were used. A spectrophotometer was used to determine the...
E M Caravati
The American journal of emergency medicine, 6(2), 143-150 (1988-03-01)
Significant local and systemic toxicity may occur from hydrofluoric acid by all routes of exposure. Prompt decontamination by removal from the source and copious irrigation of eyes and skin are essential to reduce morbidity and mortality. Ingestion of small amounts...
Matthew Strausburg et al.
Dermatitis : contact, atopic, occupational, drug, 23(5), 231-236 (2012-09-27)
Exposure to hydrofluoric acid can cause severe skin damage via both corrosive and chemical means. Dermatologists should be aware of the various clinical presentations and knowledgeable of how to manage such patients. A case of a man with exposure of...
Xin-gang Wang et al.
Zhonghua shao shang za zhi = Zhonghua shaoshang zazhi = Chinese journal of burns, 29(4), 371-374 (2013-12-20)
Hydrofluoric acid (HF) is one of the most common inorganic acids used widely in industrial circle. HF not only causes cutaneous burn, but also induces systemic toxicity by its unique injury mechanism. Accurate and timely diagnosis and treatment are critical...
R L Sheridan et al.
Burns : journal of the International Society for Burn Injuries, 21(1), 62-64 (1995-02-01)
Exposures of as little as 2.5 per cent of the body surface to concentrated hydrofluoric acid (HF) may be fatal. Survival after major HF exposures is facilitated by aggressive emergency management which, we feel, includes wound irrigation, subeschar injection of...
Qing Wang et al.
Organic & biomolecular chemistry, 10(43), 8566-8569 (2012-09-26)
A convenient, metal-free intramolecular aminofluorination of alkenes has been developed. Employing readily available PhI(OPiv)(2) and hydrogen fluoride-pyridine in the presence of BF(3)·OEt(2), tosyl-protected pent-4-en-1-amines were converted to 3-F-piperidines in one step in good yields as well as high stereoselectivity.
P Edelman
Occupational medicine (Philadelphia, Pa.), 1(1), 89-103 (1986-01-01)
Chemical burns sustained in the microelectronics industry consist mostly of injuries to the skin of the hand and face. The injuries are caused by splashes, holes in gloves, or accidental use of a chemical improperly. The chemical burns of the...
Angelika Baranowska-Łączkowska et al.
Journal of computational chemistry, 34(4), 275-283 (2012-09-22)
Interaction-induced static electric properties, that is, dipole moment, polarizability, and first hyperpolarizability, of the CO-(HF)(n) and N(2)-(HF)(n), n = 1-9 hydrogen-bonded complexes are evaluated within the finite field approach using the Hartree-Fock, density functional theory, Møller-Plesset second-order perturbation theory, and...
Pedro Henrique Corazza et al.
The journal of adhesive dentistry, 15(5), 473-479 (2013-04-18)
To evaluate the effect of post-silanization heat treatment of a silane agent and rinsing with hot water of silanized CAD/CAM feldspathic ceramic surfaces on the microtensile bond strength between resin cement and the ceramic, before and after mechanical cycling. Blocks...
J C Bertolini
The Journal of emergency medicine, 10(2), 163-168 (1992-03-01)
Hydrofluoric acid is a toxic substance used widely in both industrial and domestic settings. It can cause severe burns, as well as systemic toxicity. Death has been reported from as little as 2.5% body surface area (BSA) burn involving concentrated...
M S Cappell et al.
The American journal of gastroenterology, 88(1), 122-126 (1993-01-01)
A 33-yr-old white male presented with bloody diarrhea, leukocytosis, and left lower quadrant direct and rebound tenderness after a self-administered concentrated hydrofluoric acid enema while intoxicated from intranasal cocaine administration. Intraoperative flexible sigmoidoscopy and a gastrografin enema revealed severe mucosal...
Mutlu Ozcan et al.
The journal of adhesive dentistry, 15(3), 207-210 (2013-05-24)
This study evaluated the effect of different surface conditioning protocols on the repair strength of resin composite to the zirconia core / veneering ceramic complex, simulating the clinical chipping phenomenon. Forty disk-shaped zirconia core (Lava Zirconia, 3M ESPE) (diameter: 3...
Health care plan for hydrogen fluoride spill, Gumi, Korea.
Hyun-Sul Lim et al.
Journal of Korean medical science, 27(11), 1283-1284 (2012-11-21)
Hydrofluoric acid-revisited.
Andrew Burd
Burns : journal of the International Society for Burn Injuries, 30(7), 720-722 (2004-10-12)
Seong-Ho Baek et al.
Journal of nanoscience and nanotechnology, 13(5), 3715-3718 (2013-07-19)
In this report, we have demonstrated the morphological evolution of the silver nanoparticles (AgNPs) by controlling the growth conditions and its effect on morphology of silicon (Si) during metal-induced electroless etching (MICE). Self-organized AgNPs with peculiarly shape were synthesized by...
Neutralizing a caustic chemical.
Santiago Nogué et al.
Nursing, 43(6), 8-8 (2013-05-21)
Dermal exposure to hydrofluoric acid causing significant systemic toxicity.
Dana Bartlett
Journal of emergency nursing: JEN : official publication of the Emergency Department Nurses Association, 30(4), 371-373 (2004-07-30)
Ioana Onisor et al.
The international journal of esthetic dentistry, 9(1), 54-69 (2014-04-24)
The aim of this in vitro study was to observe the effect of hydrofluoric acid (HF) on the surface of two glass ceramics for Cerec and to compare it with the effect on a conventional glass ceramic. Discs were cut...
Moustafa N Aboushelib et al.
The journal of adhesive dentistry, 16(6), 547-552 (2014-12-18)
To evaluate the influence of the internal structure of lithium disilicate glass ceramics (LDC) on the microtensile bond strength to a resin adhesive using two surface treatments. Milling blocks of three types of LDC were sectioned (4 mm thick) using...
Mutlu Ozcan et al.
Clinical oral investigations, 16(1), 15-23 (2011-11-09)
Hydrofluoric acid (HF) is commonly used for conditioning the glass ceramics either prior to cementation or for intraoral repair in prosthetic and restorative dentistry. The present study offers a review of chemical properties of HF used, highlight the possible hazardous...
Bo-Ah Lee et al.
The Journal of prosthetic dentistry, 109(2), 95-105 (2013-02-12)
Ti-10Ta-10Nb alloy is a promising alloy for metal ceramic crowns because of its good corrosion resistance and low cytotoxicity. However, more information is needed on the bond strength between this alloy and porcelain. The purpose of this study was to...
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