We synthesize recent results from lake-sediment studies of Holocene fire-climatevegetation interactions in Alaskan boreal ecosystems. At the millennial time scale, the most robust feature of these records is an increase in fire occurrence with the establishment of boreal forests dominated by Picea mariana: estimated mean fire-return intervals decreased from ≥300 yrs to as low as ∼80 yrs. This f...

BACKGROUND Lantana camara L. (Verbenaceae), a widely growing shrub which is toxic to some animal species, has been used in the traditional medicine for treating many ailments. The purpose of the present study was to evaluate the antimotility effects of Lantana camara leaf constituents in mice intestine. METHODS Evaluation of antimotility activity was done in intestine of mice treated with Lan...

Paleorecords of the middle Holocene (MH) from the North American mid-continent can offer insights into ecological responses to pervasive drought that may accompany future climatic warming. We analyzed MH sediments from West Olaf Lake (WOL) and Steel Lake (SL) in Minnesota to examine the effects of warm/dry climatic conditions on prairie-woodland ecosystems. Mineral composition and carbonate del...

The present study was undertaken to study the combined effect of Aflatoxin and Ochratoxin A on liver enzymes of broilers and the amelioration of the effects using adsorbents. Aflatoxin and ochratoxin A were mixed with the broiler diet to attain a concentration of 1 ppm and 2 ppm respectively. Activated charcoal at 0.4% and lyophilized yeast culture at 0.2% level were used as adsorbents for test...

OBJECTIVE Charcoal-burning suicide has recently been spreading to many Asian countries. There have also been several cases involving this new method of suicide in Western countries. Restricting access to suicide means is one of the few suicide-prevention measures that have been supported by empirical evidence. The current study aims to assess the effectiveness of a community intervention progra...

Accidental ingestion of phenytoin can lead to severe neurological sequelae. Charcoal hemoperfusion decreases phenytoin levels but has never been reported before in children. We present a child with accidental ingestion of phenytoin who responded to charcoal hemoperfusion.

Household energy in sub-Saharan Africa is largely derived from woodfuels burned in simple stoves with poor combustion characteristics. These devices emit products of incomplete combustion [PICs] that both damage human health and negatively impact the atmospheric radiation budget. We use empirical studies and published emission factors to estimate the pollution associated with production, distri...

PURPOSE OF REVIEW For decades, activated charcoal has been used as a 'universal antidote' for the majority of poisons because of its ability to prevent the absorption of most toxic agents from the gastrointestinal tract and enhance the elimination of some agents already absorbed. This manuscript will review the history of activated charcoal, its indications, contraindications, and the complicat...

The lung cancer mortality rate has been lower in Japan than in the United States for several decades. We hypothesized that this difference is due to the Japanese preference for cigarettes with charcoal-containing filters, which efficiently absorb selected gas phase components of mainstream smoke including the carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone. We analyzed a subset of smo...

lisiantus is introduced among the 10 top cutting flowers in the world. micropropagation can be used in this plant because of some problems in traditional propagation. in this research, the effects of the growth regulators on the in vitro shoot regeneration and rooting of the shoots obtained from nodal explants were investigated. the effects of the different concentrations of bap and kin on shoo...