In the Brazilian Amazon, forest conversion to agricultural lands (slash-and-burn cultivation) contributes to soil mercury (Hg) release and to aquatic ecosystem contamination. Recent studies have shown that soil Hg loss occurs rapidly after deforestation, suggesting that Hg mobility could be related to the massive cation input resulting from biomass burning. The objective of this research was to...

Anhydrous ammonia, a widespread industrial chemical, can cause severe inhalation and ophthalmic injuries, as well as cutaneous burns. We present five patients with ammonia injury treated at our burn center after an explosion in a warehouse. The challenges inherent in managing the pulmonary complications of this injury are emphasized.

Chemical burns take up a high proportion of burns admissions and can penetrate deep into tissues. Various reagents have been applied in the treatment of skin chemical burns; however, no optimal reagent for skin chemical burns currently exists. The present study investigated the effect of topical body protective compound (BPC)-157 treatment on skin wound healing, using an alkali burn rat model. ...

PURPOSE We describe a case of full-thickness corneal restoration after an acute corneal burn with an acid agent. METHODS A 32-year-old male reported painful discomfort, redness, photophobia, and a decrease in visual acuity in the left eye after a unilateral burn with an acid agent. Slit-lamp examination revealed massive corneal melting involving necrotic sequestrum of the entire corneal surfa...

Low-thrust long-burn-time solid rocket motors may be useful as propulsion for small, fast, uncrewed aerial vehicles. These require a slow-burning propellant that can operate at unusually low chamber pressures (0.3–2 MPa). Slow-burn propellants were developed using ammonium perchlorate oxidizer and the burn rate suppressant oxamide. By varying amount of oxamide (from 0 to 20%), rates from 4 (at ...

Background: Burn is an injury caused by biological, chemical, electrical and physical agents with local systemic repercussions. It one of the most significant health problems throughout world, leading to prolonged hospitalization hence increased expense for patients, their families society. Today, prognosis patients burn dependent, apart from adequate treatment, upon health-care system professi...

We present an analysis of burn mortality in our burns centre in Nigeria. A total number of 285 patients sustained burns during the study period (1996-2000). Fifty-seven of the patients (20%) died, of whom 38 were male (66.7%) and 19 female (33.3%). Flame burn was responsible for 92.9% of the deaths, followed by 5.3% of deaths due to chemical burns and 1.8% to scalding. The highest mortality was...

Semi-solid processing (SSP) is a popular near-net-shape forming technology for metals, while its application is still limited in titanium alloy mainly due to its low formability. Recent works showed that SSP could effectively enhance the formability and mechanical properties of titanium alloys. The processing parameters such as temperature and forging rate/ratio, are directly correlated with th...

BACKGROUND Alkali-burned corneas can seldom heal properly to restore corneal transparency. Treatment of this severe disorder of the ocular surface remains a challenge. AIM OF THE WORK was to investigate whether systemically transplanted bone marrow mesenchymal stem cells (BM-MSCs) can promote corneal wound healing after alkali burn. MATERIAL AND METHODS Thirty five male New Zealand rabbits ...