The continued rise in atmospheric carbon dioxide (CO2) levels is driving climate change and temperature shifts at a global scale. CO2 Capture and Storage (CCS) technologies have been suggested as a feasible option for reducing CO2 emissions and mitigating their effects. However, before CCS can be employed at an industrial scale, any environmental risks associated with this activity should be id...

Scorpion venom toxicity is one of the major medical concerns from old years, due to its influence on human activities and health. From many years ago a lot of researches established to examine different aspects of venom toxicity and its effects on different organs. During these years researchers are doing more specific studies on the cytotoxicity of scorpion venom. In Iran, Odonthobuthus doriae...

Scorpion venom toxicity is one of the major medical concerns from old years, due to its influence on human activities and health. From many years ago a lot of researches established to examine different aspects of venom toxicity and its effects on different organs. During these years researchers are doing more specific studies on the cytotoxicity of scorpion venom. In Iran, Odonthobuthus doriae...

A widespread defense strategy used by hypoxia-tolerant animals is metabolic depression. One possible mechanism for metabolic depression is "channel arrest." This hypothesis predicts that ion leakage through plasma membrane leakage channels is reduced during an anoxic episode. The decreased ion flux would result in the conservation of energy through the reduction of ATP-demanding ion pumping. We...

The purpose of this systematic review was to determine whether smear layer removal reduces leakage of obturated human teeth in vitro. PubMed was searched for articles published between 1975 and 2005, and results were categorized based on the method of leakage test. Among 26 eligible papers with 65 comparisons, 53.8% of the comparisons reported no significant difference, 41.5% reported a differe...

low temperature is one of main factors limiting distribution of woody plants. in order to evaluate the resistance of 4-years old seedlings and adult trees of maclura pomifera to freezing stress, a factorial experiment was carried out based on completely randomized design with three replications in the faculty of agriculture, university of tehran. during 2012-2013 sampling were done from the ann...

One of the major abiotic stresses limiting the productivity and the geographical distribution of many important crops is low temperature. Hydrogen sulfide (H2S) is an important signaling molecule involved in several stress-resistance processes such as drought, salinity and heavy metal stresses in plants. The aim of this study was to investigate the effects of exogenous H2S...