نتایج جستجو برای: active charcoal

تعداد نتایج: 446440  

2014
Irene Criscuoli Giorgio Alberti Silvia Baronti Filippo Favilli Cristina Martinez Costanza Calzolari Emanuela Pusceddu Cornelia Rumpel Roberto Viola Franco Miglietta

The addition of pyrogenic carbon (C) in the soil is considered a potential strategy to achieve direct C sequestration and potential reduction of non-CO2 greenhouse gas emissions. In this paper, we investigated the long term effects of charcoal addition on C sequestration and soil physico-chemical properties by studying a series of abandoned charcoal hearths in the Eastern Alps of Italy establis...

2004
Chairil A. Siregar Nobuo Ishibashi Tsuyoshi Kato Kazuya Ando

Charcoal is one of the important energy sources in the developing countries. Additionally, it is effective not only in carbon fixation and inactivation in the atmosphere but also in environmental conservation when used as an agent such a soil conditioner or growth accelerator of plants. However the utilization of charcoal in forestry sector, especially industrial plantation, has not been introd...

2007
Victoria Y. Fan Amy Smith David Wallace Amy Banzaert Charles Mathis

In Haiti, wood and wood charcoal are common fuels for cooking. This practice has contributed to deforestation, leading to erosion and fatal floods. The availability of charcoal made from a different source other than wood, such as agricultural waste, might provide Haitians with an alternative, more sustainable fuel, which in turn may reduce fuel prices. MIT students have developed various metho...

2008
Suresh Panthee Shyam P. Lohani

Introduction: Adsorption capacity of activated charcoal to paracetamol was determined at simulated gastric environment, pH 3.4 and simulated intestinal environment pH 7.2. Three formulations of activated charcoal; powder, capsule and suspension were tested. Paracetamol was derived from tablet to simulate in vivo intoxication conditions. Methods: Activated charcoal and paracetamol were mixed at ...

2014
Alastair J. Crawford Claire M. Belcher

UNLABELLED PREMISE OF THE STUDY Charcoal particles preserved in sediments are used as indicators of paleowildfire. Most research focuses on abundance as an indicator of fire frequency, but charcoals also convey information about the vegetation from which they are derived. One potential source of information is their morphology, which is influenced by the parent material, the nature of the fi...

Journal: :Journal of epidemiology and community health 2007
Ka Y Liu Annette Beautrais Eric Caine Kathy Chan Anne Chao Yeates Conwell Chikin Law Dominic Lee Pichiang Li Paul Yip

OBJECTIVES Following the first case in Hong Kong in 1998, the method of committing suicide by charcoal burning has spread to other communities. This aim of this study was to examine the impact of charcoal burning suicides on both overall suicide rates and older-method suicide rates in Hong Kong and urban Taiwan. DESIGN Trend analysis of the overall and method-specific suicide rates between 19...

2007
Tuyeni Heita Mwampamba

By lumping together charcoal and firewood consumption to determine the threats to forests from widespread use of woodfuel energy in sub-Sahara African, studies have greatly underestimated the individual impact of charcoal. Where high consumption levels are coupled with poor forest management and negligible regulation of the charcoal trade, the threat of an impending crisis caused by charcoal al...

2015
OVIDIU RUSALIM PETRIS EUGEN GAZZI LAURENTIU SORODOC CRISTINA BOLOGA VICTORITA SORODOC CATALINA LIONTE

Neutralization represents an important goal in toxicology, reducing exposure to poison being crucial in any management plan of any intoxication. Controversial data actually exists in the literature regarding activated charcoal capacity to bind organophosphates. To determine and compare organophosphate binding capabilities for different hydrophobic substances, considered to have neutralising pro...

Journal: :Cancer research 1985
J H Bertram S M Grunberg I Shulman M L Apuzzo D Boquiren L Kunkel J C Hengst J Nelson W J Waugh D Plotkin

Eleven patients with advanced breast cancer and four with astrocytoma were treated with plasma perfused over columns containing staphylococcal Protein A (SPA). Doses of 5 to 20 mg of SPA were bound to collodion charcoal particles, and this treatment resulted in partial remissions in one patient with astrocytoma and in two patients with breast cancer. Remission duration was 6 wk to 6 mo. Resolut...

Journal: :Clinical chemistry 1979
V A Raisys A M Zebelman S F MacMillan

We describe a gas-liquid chromatographic method for determining mephenytoin and its active metabolite, desmethylmephenytoin, in human serum. 5-Methyl-5-phenylhydantoin is used as the internal standard. The method involves extraction of the drugs by adsorption onto charcoal and off-column derivatization to their pentyl derivatives. Peak height and concentration are linearly related and the day-t...

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