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carbon; charcoal; data collection; databases; human settlements; provenance; radiocarbon dating; radionuclides; research projects; selection criteria; Colombia
Abstract:
... The aim of this paper is to make a critical appraisal of the available ¹⁴C dataset from Northwest South America (Colombia) corresponding to the Pleistocene/Holocene transition (ca. 12,000–8000 ¹⁴C years BP). The first step in the study was to assemble from both published and unpublished sources an exhaustive database of ¹⁴C dates (n = 85), recording data regarding the environmental setting and spa ...
... Despite their importance as global carbon sinks, peatlands of Southeast Asia have been rarely studied and our current knowledge of the dynamics and ecology of these ecosystems remains incomplete. Paleoecological and palynological multi-proxy analyses including analysis of pollen, spores, charcoal, testate amoebae and sediments were carried out on a 733cm-long core taken from the Air Hitam peatland ...
... We provide sedimentological, geochemical, mineral magnetic, stable carbon isotope, charcoal, and pollen-based evidence from a guano/clay sequence in Gaura cu Muscă Cave (SW Romania), from which we deduced that from ~1230 BC to ~AD 1240 climate oscillated between wet and dry. From ~1230 BC to AD 1000 the climate was wetter than the present, prompting flooding of the cave, preventing bats from roost ...
... Pollen and plant macrofossil analyses were performed on a sequence 105cm deep obtained from a peat bog (1750m) that is located above the present timber-line in the Osogovo Mountain, Southwestern Bulgaria. The palaeovegetation reconstruction, supported by a radiocarbon chronology, revealed the vegetation dynamics and human impact during the last 5000years. The peat bog formed when a coniferous belt ...
apples; aspartic acid; charcoal; chromatography; climate; cultivars; discriminant analysis; fructose; glucose; least squares; metabolites; metabolomics; nuclear magnetic resonance spectroscopy; principal component analysis; storage time; sucrose; Japan; New Zealand
Abstract:
... This study utilises 1H NMR-based metabolic profiling to characterise apples of five cultivars grown either in Japan (Fuji, Orin, and Jonagold) or New Zealand (Fuji, Jazz, and Envy). Principal component analysis (PCA) showed a clear separation between the Fuji–Orin–Jonagold class and the Jazz–Envy class, primarily corresponding to the differences in sugar signals, such as sucrose, glucose, and fruc ...
Carex; Pinus rigida; age structure; animals; bark; charcoal; cluster analysis; community structure; fire scars; ground cover plants; mineral soils; models; multidimensional scaling; nutrients; plant characteristics; plant communities; plateaus; principal component analysis; seedlings; shrubs; tree and stand measurements; trees; Appalachian region; West Virginia
Abstract:
... The Panther Knob Preserve is important in the Central Appalachians because it is the region's largest high-elevation pitch pine (Pinus rigida) community, containing numerous rare and threatened plants and animals. Plant community structure and evidence of fire in 2008 were quantified to (a) document successional changes since 1985, and (b) test the hypothesis of pitch pine regeneration failure wit ...
... Archaeological excavations at North-Bohemian sandstone rock shelters have uncovered complex evidence of intermittent human presence since the Late Palaeolithic to recent times. In this paper, we investigate the history of Holocene woodlands based on charcoal assemblages from stratified sandy accumulations under archaeologically investigated rock shelters. In total, we carried out anthracological a ...
X-ray diffraction; absorption; aquatic environment; aqueous solutions; bottom ash; carbon; charcoal; chemical precipitation; energy recovery; industrial applications; magnetic separation; magnetite; methanol; methylene blue; microwave radiation; porous media; sorption isotherms; spectroscopy; surface area; transmission electron microscopy
Abstract:
... Herein, we synthesized Fe3O4–charcoal composite using chemical precipitation technique and utilized it for the sorption of methylene blue from aqueous solution. The synthesized composite was characterized by Infra-red spectroscopy, N2 adsorption-desorption isotherm, X-ray diffraction, selected area electron diffraction, transmission electron microscopy, and vibrating sample magnetometer. The compo ...
... Various environmental factors, including atmospheric CO₂ (pCO₂), regional climate, and fire, have been invoked as primary drivers of long‐term variation in C₄ grass abundance. Evaluating these hypotheses has been difficult because available paleorecords often lack information on past C₄ grass abundance or potential environmental drivers. We analyzed carbon isotope ratios (δ¹³C) of individual grain ...
... Apparent changes in vegetation distribution, fire, and other disturbance regimes throughout western North America have prompted investigations of the relative importance of human activities and climate change as potential causal mechanisms. Assessing the effects of Euro-American settlement is difficult because climate changes occur on multi-decadal to centennial time scales and require longer time ...
... To investigate past vegetation change and human activity at the highest elevations on Easter Island, this study examines pollen, phytoliths, diatoms, starch and arthropods preserved in sediment/soil profiles from Rano Aroi crater, and another, newly described wetland in the adjacent, much smaller Rano Aroi Iti depression. A Bayesian age–depth model for Rano Aroi provides adequate certainty for the ...
Acacia mearnsii; adhesives; bark; beverages; charcoal; consumers (people); exports; farmers; flocculants; forests; fuelwood; hardwood; harvesting; income; kraft pulping; land ownership; leather industry; markets; mechanization; pests; planting; prices; pulp; research and development; silviculture; tannins; trees; vegetables; wages and remuneration; wood chips; wood density; Brazil; China; India; South Africa
Abstract:
... Acacia mearnsii De Wild (black wattle) is an important plantation species for tannin production and woodchip exports in South Africa and Brazil. This study provides an updated overview of the black wattle industries in both countries, including planted areas and land ownership, silviculture and management, bark extract production, woodchip exports, as well as key research and development issues. T ...
... We attempted to use feathers for the production of activated carbon (AC). A water-soluble resol-type phenolic resin was hybridized to prevent the liquefaction of the feathers and to control the graphitization degree of charcoal. The hybridization could effectively increase the yield of charcoal over 30% and maintained the graphitization degree at approximately 0.1, suitable for the production of A ...
active sites; adsorbents; adsorption; analysis of variance; anions; biochemical oxygen demand; biosorbents; charcoal; chemical oxygen demand; chitosan; chromium; coatings; coconuts; leather tanning; pH; tanneries; wastewater
Abstract:
... Besides having advantages, Chitosan as biosorbent has also disadvantages. . Chitosan is very soluble in low pH so it cannot adsorb Cr (total) at low pH. It is due to active site (amine group) of chitosan undergo protonation and its adsorption capability is easily influenced by anions in waters. The research studied use of chitosan coating active charcoal of coconut shell to increase adsorption cap ...
... Using enrichment culture technique, three isolates marked as ODB-1, ODB-2 and ODB-3, were selected from oil contaminated seawater. 16S rDNA gene sequencing indicated that ODB-1 affiliated with Pseudomonas sp. while ODB-2 and ODB-3 affiliated with Brevundimonas sp. Subsequently, the bacterial cells were immobilized on the surface of expanded graphite (EG), expanded perlite (EP) and bamboo charcoal ...
air; carbon; ceramics; charcoal; cold; fluidized beds; fuels; gasification; heat; renewable energy sources; rice hulls; sand; temperature
Abstract:
... An experimental study of air gasification of rice husk was conducted in a bench-scale fluidized bed gasifier (FBG) having 210mm diameter and 1600mm height. Heating of sand bed material was performed using conventional charcoal fuel. Different operating conditions like bed temperature, feeding rate and equivalence ratio (ER) varied in the range of 750–850°C, 25–31.3kg/h, and 0.3–0.38, respectively. ...
... This paper reviews the palaeobiogeography of Taxus baccata (yew) and the human social customs and traditions relating to this tree in southwest Europe. Pollen and archaeobotanical (charcoal, seeds and manufactured tools) evidence supplemented by some data from ethnographical sources have been considered in an integrated approach focused on the Holocene. The geographical scope covers northern Spain ...
... Microbial residues are important contributors to soil organic matter (SOM). However, the effect of mineral composition on microbial activity and thereby SOM development is not well understood. Here, we used artificial soils composed of four different mixtures containing illite, montmorillonite, ferrihydrite and charcoal to study the effect of mineral composition on SOM development. In addition, si ...
... In this paper we propose a simple procedure for the extraction of BTEX (benzene, toluene, ethylbenzene and xylenes) from activated charcoal. For this purpose synthetic samples were prepared in a laboratory and real samples were collected in a polluted environment using passive sampling. The proposed extraction procedure is based on the use of an appositely designed Soxhlet apparatus, dimensions of ...
... Limits set by the Kyoto protocol brings Czech Republic billions of EUR from carbon emissions trading. The Ministry of Environment wants to invest the aforementioned revenue into energy savings and other projects like subsidies on the purchase of stoves for solid biofuels in regions with the most polluted air. Surprisingly, charcoal is not supported. Robust analysis of solid biofuels was made accor ...
... The native forests of the central and eastern Pacific Islands were extensively modified by Polynesian settlers, but our understanding of these processes is generalised. In the first large study of anthropogenic forest change in the Marquesas Islands, the identification of two members of the Sapotaceae family in prehistoric archaeological charcoal assemblages was notable. Extant species from this f ...
... The purpose of this study was to describe the susceptibility of environmental strains of Legionella spp. to 10 antimicrobials commonly used for legionellosis therapy. A study of environmental strains could be useful to timely predict the onset of antibiotic resistance in the environment before it is evidenced in clinical specimens.The minimum inhibitory concentrations (MICs) of 100 environmental L ...
Thiago S.L. Araújo; Douglas S. Costa; Nayara A. Sousa; Luan K.M. Souza; Simone de Araújo; Ana Patrícia Oliveira; Francisca Beatriz M. Sousa; Durcilene A. Silva; André L.R. Barbosa; José Roberto S.A. Leite; Jand Venes R. Medeiros
... Anacardium occidentale L. (Anacardiaceae) is commonly known as the cashew tree. It is native to tropical America and extracts of the leaves, bark, roots, chestnut net and exudate have been traditionally used in northeast Brazil for the treatment of various diseases. The exudate of the cashew tree (cashew gum) has been exploited by locals since ancient times for multiple applications, including the ...
... The aim of this study was to evaluate the effect of different fractions of the aqueous crude extract of Detarium senegalense stem bark on castor oil-induced diarrhea. Castor oilinduced diarrhea, gastrointestinal motility and castor oil-induced enteropooling methods were used to evaluate the antidiarrheal effects of the fractions. Castor oil was used to induce diarrhea and the effect of all the fra ...
Mangifera indica; adenosinetriphosphatase; alkaloids; anthraquinones; antidiarrheal effect; body weight; cardiac glycosides; charcoal; diarrhea; drugs; enzyme activity; females; flavonoids; gastrointestinal transit; leaf extracts; leaves; models; rats; saponins; secondary metabolites; small intestine; sodium; steroids; tannins; traditional medicine; water content
Abstract:
... Mangifera indica L. leaves have a long history of indigenous use, as an antidiarrhoeal agent among others, without any scientific study that has substantiated or refuted this claim. Therefore, the aims of this study were to determine the secondary metabolites in the aqueous extract of Mangifera indica leaves and its acclaimed antidiarrhoeal activity in rats.The aqueous leaf extract of Mangifera in ...
... Pyroligneous acid was produced by subjecting the stem and leaves of pineapple plants from a local plantation area to slow pyrolysis in a charcoal kiln for 48h. The concentrated pyroligneous acid from pineapple plant waste biomass (CPAP: Concentrated pyroligneous acid from pineapple waste biomass) and its dichloromethane extract (DCPAP: Dichloromethane extract of concentrated pyroligneous acid from ...
... This paper presents the results of plant macro-remain and charcoal analyses from a fortified settlement of the Sintashta archaeological culture in the southern Trans-Urals, Russia. The work was carried out within the scope of a German/Russian research project and represents the first systematic studies on Bronze Age plant material in the region. Previous archaeological and archaeozoological invest ...
... Recent excavation at the site of Chobareti (1615 m a.s.l., South Caucasus Mountains) reveals an important Kura-Araxes settlement and eleven burials so far, for which a first multi-proxies approach was conducted to understand both exploitation of plants and human dietary practices in this mountainous area. Thanks to the excavation of several pits, in 2011, a well-reasoned sampling for archaeobotani ...
burning; carbon; charcoal; climate change; ecosystems; fire regime; fires; issues and policy; lakes; managers; sediments; summer; temperature; tundra
Abstract:
... Anthropogenic climate change may result in novel disturbances to Arctic tundra ecosystems. Understanding the natural variability of tundra‐fire regimes and their linkages to climate is essential in evaluating whether tundra burning has increased in recent years. Historical observations and charcoal records from lake sediments reveal a wide range of fire regimes in Arctic tundra, with fire‐return i ...
... Non-nuclear industries use raw materials containing significant levels of naturally occurring radioactive material (NORM). The processing of these materials may expose workers engaged in or even people living near such sites to technologically enhanced naturally occurring radioactive material (TENORM) above the natural background. Inductively coupled plasma and gamma ray spectrometry have been use ...
BTEX (benzene, toluene, ethylbenzene, xylene); adsorbents; air quality; atmospheric chemistry; benzene; charcoal; emissions; ethylbenzene; gas chromatography-mass spectrometry; solvents; toluene; volatile compounds; xylene; Brazil
Abstract:
... In this work, the contribution of evaporative emissions from light passenger vehicles to the degradation of the air quality was investigated on the basis of the indoor quantification of the monoaromatic volatile compounds Benzene, Toluene, Ethylbenzene and Xylenes (BTEX), specifically, a confined shopping mall parking area in the northern zone of Rio de Janeiro, a site that represents the reality ...
Amaranthus tricolor; Food and Agriculture Organization; arsenic; bricks; charcoal; copper; electrical conductivity; filtration; fish; gravel; heavy metals; hospitals; households; iron; irrigation; kitchens; lead; leaves; manganese; markets; municipal wastewater; nylon; pH; plant growth; ponds; rice hulls; rivers; sand; sawdust; seed germination; sewage; soil; total dissolved solids; water conservation; wood; zinc; Bangladesh
Abstract:
... Because of the scarcity of clean water, treated wastewater potentially provides an alternative source for irrigation. In the present experiment, the feasibility of using low-cost filtered municipal wastewater in the irrigation of red amaranth (Amaranthus tricolor L cv. Surma) cultivation was assessed. The collected municipal wastewater from fish markets, hospitals, clinics, sewage, and kitchens of ...
... In order to assess the optimal method for the early detection and isolation of thermophilic Campylobacter in broilers at farm level, two types of samples were compared: caecal contents obtained by necropsy and cloacal swabs transported in charcoal Amies medium. The study was conducted in five batches of broilers from five different farms, where weekly samples (caecal contents and cloacal swabs) fr ...
... Paphiopedilum spicerianum is listed as one of the country’s Wild Plants with Extremely Small Populations (PSESP). Procedures were developed for asymbiotic seed germination and seedling development aimed at producing seedlings for reintroduction. The highest germination was achieved in RECW with a 24 h dark cycle after pretreatment with 1% NaOCl for 40 min after 30 days from germination. However, t ...
... Charcoals have been widely used by scientist to research the removal of contaminants from water and air. One key feature of charcoal is that it keeps macropores from the parent material – though anisotropically contracted – and can even develop meso- and micropores. However, the controlled thermochemical conversion of biomass into charcoal at laboratory scale normally requires special setups which ...
... Bamboo tar, a dark-brown residue of the precipitated part obtained by setting the crude bamboo vinegar for 6 months or by distilling the crude bamboo vinegar under a reduced pressure, was collected from ten bamboo charcoal factories in China. All samples were analyzed by GC–MS for various concentration of phenolic derivatives (the concentration varying from 13.93% to 61.8%) and the highest total p ...
... A sugar solution containing 42.9 g l⁻¹ of xylose was prepared from the wood of Japanese white birch (Betula platyphylla var. japonica) by hydrolysis with 3 % sulfuric acid with a liquor-to-solid ratio of 4 (g g⁻¹) at 120 °C for 1 h. During the acid hydrolysis, undesirable by-products were generated, such as acetic acid, furfural, and low-molecular-weight phenols, which inhibit bioconversion of xyl ...
... This paper discussed effects of lowland-associated influences on upland ecology, food security and biocultural diversity in the Sarangani farming communities of the Philippines. In the uplands of Sarangani Province, the conservation of traditional rice varieties, the centrality of rice in tribal life, and the continued observance of planting rituals attest to its cultural significance and convey a ...
... N–F codoped TiO₂/straw charcoal composites (NF–TiO₂/SC) were synthesized using a simple, bioframe-assisted sol–gel method and confirmed by XRD, SEM, EDX, TEM, N₂ adsorption–desorption, Raman, FT-IR, XPS, and UV-vis DRS measurements. It has been found that the as-synthesized catalysts formed a 3D-hierarchical structure with carbon framework after calcination. The physicochemical properties, such as ...
biomass; carbon dioxide; charcoal; coal; energy; energy conservation; energy use and consumption; furnaces; greenhouse gas emissions; heat; industry; limestone; models; pyrolysis; slags; steel; wood; Sweden
Abstract:
... We have investigated and modeled the injection of biomass into blast furnaces (BF), in place of pulverized coal (PC) from fossil sources. This is the easiest way to reduce CO2 emissions, beyond efficiency-improvements. The considered biomass is either pelletized, torrefied or pyrolyzed. It gives us three cases where we have calculated the maximum replacement ratio for each. It was found that charc ...
... Oak forests around the world have been widely used to obtain firewood and produce charcoal and like other habitats have been affected by the increasing development of livestock activities. Oak forests from western Mexico are one of the five priority habitats for the conservation of birds at a continental level and are the repository of the highest number of endemic bird species in this megadiverse ...
... Estrone (E1), estradiols (α/β-E2), and estriol (E3) are four major metabolically active estrogens exerting strong biological activities at very low circulating concentrations. This paper reports a sensitive and efficient method with automated, on-line clean-up and detection to determine trace estrogens in a small volume of serum samples using liquid chromatography–electrospray ionization–tandem ma ...
... Handmade charcoal briquettes made from harvesting residues and soil were tested for their burning characteristics. The soil was added as a fire retarder to decrease the maximum burning temperature and temperature decline rate. In this way the danger of fire to the surroundings is minimized and the potential usefulness, e.g. for cooking purposes, is maximized. Briquettes with different coal to soil ...
... Collection of fuelwood and its inefficient use for cooking and protecting animals from insects contribute to forest degradation and deforestation in developing countries. Assessment of fuelwood dependency can provide a basis for introducing effective measures for reducing emissions and fuelwood collection without compromising the basic needs of local people. Using a community located in Phnom Tben ...
... Carbon monoxide (CO) poisoning is a common cause of death globally, and case reports and empirical studies on CO poisoning are widely examined. However, to the authors’ knowledge, CO poisoning deaths in the mainland China are scarcely studied. Therefore, this study aims to explore the incidence trend of CO poisoning deaths that occurred in Wuhan – a mega city in Central China – for a six-year peri ...
carbon; charcoal; climate; climate change; deforestation; emissions; forest plantations; international trade; iron; kilns; prices; pyrolysis; Brazil
Abstract:
... Brazilian merchant pig iron (MPI) mills, even those relying exclusively on charcoal, are at least as harmful to the global climate as the coal-based competitors they confront in international trade. However, when timber from deforestation is replaced by sustainably managed forest plantations, a carbon neutral process emerges. Yet the cost of growing trees can be large enough to discourage mills fr ...
... The major metal elements contained in Japanese oak (Quercus serrata Thunb. and/or Quercus crispula Blume) charcoal (OC) and activated charcoal (AC) were identified by X-ray fluorescence spectroscopy. The eluted amounts of sodium, potassium, magnesium, and calcium ions from OC and AC were measured using ion chromatography. We attempted to demineralize OC and AC by water-washing, and then determined ...
aerosols; boiling; burning; business enterprises; cafeterias; carbon; charcoal; chemical composition; cities; coal; combustion; cooking quality; emissions; fish; food safety; frying; meat; oils; particulates; principal component analysis; raw materials; roasting; soil; stainless steel; toxicity; urban areas; variance; China
Abstract:
... PM2.5 samples were collected from five different cooking activities, namely, meat roasting, cafeteria frying, fish roasting, snack-street boiling, and cafeteria boiling in Ya’an, China. Their chemical compositions were investigated. The PM2.5 concentrations in the cooking samples were 2.5–9.6 times higher than those in the corresponding backgrounds. Meat roasting produced the highest amount of PM2 ...
... The present study focuses on charcoal particles (a component of vegetal ashes, Bodí et al., 2014) counted during palynological analysis. The absolute frequencies of this microcharcoal have been correlated with pollen percentages of resprouts, mesic trees, Pinus or AP (arboreal pollen), in order to observe patterns in the spread of wildfires, dynamic changes in plant succession, and possible cyclic ...
geographical distribution; dry forests; poverty; roads; production technology; deforestation; charcoal; land cover; population density; kilns; people; biomass; remote sensing; Argentina
Abstract:
... Charcoal production has been widespread in the past and is still common where poor societies and dry forests coexist. For the Dry Chaco in South America, one of the largest remaining dry forests of the world, we describe the geographical distribution, type of production systems, environmental and social context and output of charcoal based on remote sensing (charcoal kiln detection); together with ...
... Anthracological analysis is increasingly used to reconstruct natural and anthropogenic woodland dynamics. Here, we combine macro-charcoal records from charcoal production sites (kiln sites) with such from archaeological sites to elucidate past forest composition and its dependency on past fuel economy and human resource management.The anthracological investigations of seven medieval smelting sites ...
charcoal; climate; drought; ecosystems; fire regime; fires; landscapes; palynology; rain forests; savannas; soil; woodlands; Democratic Republic of the Congo
Abstract:
... The impact of Holocene drought events on the presumably stable Central African rainforest remains largely unexplored, in particular the significance of fire. High‐quality sedimentary archives are scarce, and palynological records mostly integrate over large regional scales subject to different fire regimes. Here, we demonstrate a direct temporal link between Holocene droughts, palaeofire and veget ...
... Herein, we describe the chemical composition of sapwood, heartwood and bark of Quercus laurina and Q. crassifolia, from Ixtlán de Juarez, Oaxaca, Mexico. We also report on the fuel characteristics of wood, bark and charcoal for these species. There was no significant difference in lignin (24.9–25.5%), α-cellulose (47.6–47.9%), and hemicellulose (22.4–23.2%) contents between Q. crassifolia and Q. l ...
... Mucociliary clearance is the primary physical mechanism to protect the human airways against harmful effects of inhaled particles. Environmental factors play a significant role in the impairment of this defense mechanism, whereas cigarette smoke is discussed to be one of the clinically most important causes.Impaired mucociliary clearance in smokers has been connected to changes in ciliated cells s ...
biomass; charcoal; climate; ecosystems; fire frequency; forests; lakes; pollen analysis; temperature; France
Abstract:
... The main objective of this study is to document paleofire activity during the late-glacial/early-Holocene transition in temperate ecosystems. For this purpose, we cored lakes Paladru and Moras (Rhone valley, France) and quantified sedimentary charcoal accumulation rate and fire frequency. To assess the role of climate and vegetation in paleofire activity, charcoal data were compared to vegetation ...
Europeans; agricultural history; altitude; ancient lakes; calcite; charcoal; climate change; corn; fossils; habitats; humans; montane forests; pollen; sediments; shorelines; social change; Andes region; Peru
Abstract:
... The steep, wet, forested, slopes of the mid-elevation Andes have often been dismissed as inimical to human occupation. A lack of ancient lakes in these habitats has limited the availability of paleoecologists to contribute to this discussion. Here, we present fossil pollen and charcoal data from Lake Pomacochas in northern Peru, which is a 70-m-deep lake lying at 2100 m a.s.l. We present a c. 3500 ...
charcoal; climate; climate change; fire frequency; fire regime; fires; humans; monsoon season; peat; pollen; summer; vegetation; China
Abstract:
... Understanding the fire evolution history and its driving mechanisms can provide useful insights into the fire regimes and their potential impacts in the future. Here, we present a well-dated peat profile with high-resolution charcoal and pollen records to reconstruct the fire and vegetation history in the Sanjiang Plain over the last 6000yr. The regional and local fire frequencies were reconstruct ...
... Wildfires in the Mediterranean basin are very important even if their causes and dynamics are not always fully understood. Fire occurrence is driven by several factors, such as the availability of fuel and the amount of biomass. In the Mediterranean basin, the seasonality of climate and its influence on vegetation plays an important role on flammability. Short-term fire dynamics and its relationsh ...
... The economic importance of biofuel industrial production chains will increase in the coming years and will be a promising source of co-products that are useful for sustainable farming systems. However, the use of co-products that are obtained from the biofuel production chains, especially for crop disease management, is an under-explored area in the research community. The liquid and solid co-prod ...
... This study evaluated the prevalence of Legionella species in water samples collected from Turkish baths in hotels in Alanya, Turkey, from August 2003 to September 2013. Water samples were collected in 100-mL sterile containers and then concentrated by filtration. Heat treatment was used to eliminate other microorganisms from the samples, which were then spread on Legionella-selective-buffered char ...
... This work examines the effect of both absolute pressure (range 1–6 bar) and peak temperature (range 350–800 °C) during pyrolysis of acacia wood in a macro-TG on the yield and CO₂ gasification reactivity of the resulting charcoal. A central composite design was used for the experiments. The results of statistical analyses showed satisfactory agreement between the experimental results (charcoal yiel ...
... INTRODUCTION: Although the assessment of red wine quality relies primarily on a sensory description of tannins, it may be usefully completed by some knowledge of the physicochemical properties of these tannins. The present study has a double aim: (1) to gain insight into the sensory properties of subpopulations of proanthocyanidic tannins of different molecular sizes (obtained through several ultr ...
... Campylobacter is the most common bacterial cause of human gastrointestinal disease in most developed countries. It is generally accepted that poultry products are a significant source of foodborneCampylobacter infections in humans. Assessing the effectiveness of any potential intervention at farm level requires monitoring of theCampylobacter status of broiler flocks, using appropriate sampling met ...
... This paper investigated the key factors influencing the choice of cooking fuels in Ghana. Results from the study indicated that education, income, urban location and access to infrastructure were the key factors influencing household's choice of the main cooking fuels (fuelwood, charcoal and liquefied petroleum gas). The study also found that, in addition to household demographics and urbanization ...
... The charcoal industry in sub-Saharan Africa plays a substantial role providing growing urban populations with domestic energy. However, concerns about its environmental impacts have led to punitive policies, resulting in the criminalisation of charcoal-based livelihoods. One factor constraining the development of more effective policy approaches is limited data on the impacts of regulations on the ...
... The aim of the study was to investigate the effectiveness of vitrification technique for cryopreservation of Coelogyne dayanum seeds. Seeds from green capsules were precultured on solid media supplemented with sucrose at concentrations of 0, 0.3, 0.5, 0.8 M for 3 days and dehydrated in PVS2 solution for 0, 3, 5 and 8 h at 0°C before storage in liquid nitrogen for 1 week. Survival was determined t ...
... Cs promoted Fe₅C₂/charcoal nanocatalysts bearing small iron carbide particles of 8.5 and 14 nm were prepared through a simple melt-infiltration process and a wetness impregnation method; the resulting materials showed very high CO conversion (>95%) and good selectivity, especially at Cs/Fe = 0.025, resulting in a high liquid oil productivity (∼0.4 gₗᵢq gcₐₜ⁻¹ h⁻¹) in high-temperature Fischer–Trops ...
... We experimentally demonstrate the promising redox and oxygen release characteristics of a novel bimetallic Cu–Mn oxygen carrier for chemical-looping with oxygen uncoupling (CLOU) based CO₂ capture. The new material was prepared via a co-precipitation technique and showed a higher oxygen partial pressure than pure CuO and a higher oxygen carrying capacity than Mn₂O₃, thus, synergistically combining ...
... Faecal sludge (FS), a product from on-site sanitation systems, poses a management challenge in densely populated urban slums of Sub-Saharan Africa (SSA). Currently, FS or its liquid fraction after dewatering is co-treated with sewage in conventional treatment plants. When dewatered, the solid stream is dried and stored further as the terminal treatment or is co-treated directly with organic solid ...
Elisabetta Bonerba; Anna Mottola; Antonio Parisi; Angela Di Pinto; Andrea Serraino; Giancarlo Bozzo; Federica Giacometti; Edmondo Ceci; Giuseppina Tantillo
... The aim of the study was to evaluate the occurrence of Arcobacter spp. in 20 samples of Mytilus galloprovincialis purchased at fish markets in Apulia region. The detection of Arcobacter spp. was performed, after selective enrichment, on modified charcoal cefoperazone deoxycholate (mCCD) agar supplemented with Cefoperazone, Amphotericin B and Teicoplanin (CAT). In 6 out of the 20 tested samples the ...
... Electromagnetic (EM) radiation, bacterial cross-infection, and electrostatic discharge hazards in working environments produce risks in workplace safety in EM industries and hospitals. Although many kinds of EM-shielding fabrics have been produced, few studies have focused on their antibacterial and other functional characteristics. In this study, a series of multifunctional EM-shielding fabrics p ...
... In this work, the technical feasibility of cotton stalk carbonization and torrefaction was studied. A metallic homemade cylindrical furnace 60cm in diameter and 90cm in height was used for the experiments. A partial combustion process was used both for carbonization and torrefaction. Three carbonization methods were defined based on the amount of air supplied and cotton stalks introduced in the ki ...
adsorption; aerosols; air; ambient temperature; boiling point; charcoal; diethylene glycol; droplets; evaporation; filters; hexadecane; humidity; ionization; laboratory experimentation; liquids; non-polar compounds; occupational health and safety; vapors; working conditions
Abstract:
... The sampling of semi volatiles (SV) in workplaces may lead to different results as measurements may be affected by sampling bias. The new European Standard EN 13936 defines “semi-volatiles” as substances with vapour pressures in the range between 0.001 and 100 Pa at room temperature. EN 13936 regulates the basic requirements for SV compounds that can occur as vapour and particle at the same time. ...
... The presence of expanded-spectrum β-lactamase (ESBL)–producing Escherichia coli is a common problem in the isolation of Campylobacter from poultry samples using conventional cefoperazone-based selective media. A novel chromogenic medium (CM-HT), based on modified charcoal cefoperazone deoxycholate agar (mCCDA), has been developed as a solution for improved Campylobacter detection from poultry samp ...
... The present paper evaluated the feasibility of synthetizing activated carbons from xylitol with phosphoric acid activation at mild temperatures. Activation temperature (250–450 °C) and phosphoric acid to xylitol impregnation ratio (0.2–3 wt%) were varied during the synthesis of xylitol-based activated carbon, and the effects of these parameters on the textural and chemical properties of the final ...
case studies; charcoal; food consumption; fuelwood; human behavior; manufacturing; oysters; people; shellfish; windbreaks; Queensland
Abstract:
... Middens are created from the discard of natural resources, collected by people for consumptive purposes: mainly subsistence, but also for artefact manufacture (e.g. stone, bone and shell artefacts); warmth and/or shelter (e.g. firewood [charcoal] and timber windbreaks); or for ceremony. Taphonomic processes act on the discarded cultural materials to modify the evidence originally deposited by the ...
... PURPOSE: In our study area in the Northern Limestone Alps (Austria), forest fires are rare; however, they may be stand-replacing and can trigger severe erosion. The aim of our study was to find out if where and to which extent charcoal is stored in the Rendzic Leptosols of the affected slopes and if the charcoal can be used to reconstruct earlier forest fires. MATERIALS AND METHODS: We took soil s ...
Tamarindus indica; allometry; biogeography; biomass; charcoal; ecology; equations; global positioning systems; interviews; land management; livelihood; people; planning; regression analysis; remote sensing; shifting cultivation; surveys; tamarinds; tree and stand measurements; trees; villages; wood; Madagascar
Abstract:
... The multipurpose tamarind (Tamarindus indica L.) tree is important for people’s livelihood and considered as sacred in the Mahafaly region of south-western Madagascar. However, the ongoing overexploitation of this species has caused a decline of tamarind trees. In this study, the species distribution, changes in tamarind biomass and the role of traditional taboos for the conservation of this speci ...
Jiří Svoboda; Šárka Hladilová; Ivan Horáček; Jozef Kaiser; Miroslav Králík; Jan Novák; Martin Novák; Petr Pokorný; Sandra Sázelová; Libuše Smolíková; Tomáš Zikmund
... Creating an overall scheme of Gravettian stratigraphy and chronology in the Middle Danube area is a matter of current debate. This paper addresses the formation of microstratigraphies at large open-air sites, evidence of the earliest Gravettian occupation in the Dolní Věstonice-Pavlov area, and occurrence of early ceramics from this context. The case presented here is a complex early Gravettian mi ...
charcoal; cutting; data collection; fuelwood; geographic information systems; highlands; issues and policy; land cover; land use change; landscapes; literacy; livestock; models; people; population growth; quantitative analysis; ranching; regression analysis; sustainable development; woody plants; Ethiopia
Abstract:
... Understanding drivers of changes in land use/land cover (LULC) is essential for modeling future dynamics or development of management strategies to ameliorate or prevent further decline of natural resources. In this study, an attempt has been made to identify the main drivers behind the LULC changes that had occurred in the past four decades in Munessa-Shashemene landscape of the south-central hig ...
... Color is a visible pollutant and the presence of even minute amounts of coloring substance makes it undesirable due to its appearance. The removal of color from dye-bearing effluents is a major problem due to the difficulty in treating such wastewaters by conventional treatment methods. The most commonly used methods for color removal are biological oxidation and chemical precipitation. However, t ...
... Wildfire activity in early Paleogene greenhouse conditions can be used as an analogue to gauge the effect of future warming trends on wildfire in the current climate system. Inertinite (fossil charcoal in coal) from 11 autochthonous early Paleogene lignite seams from the Schöningen mine (Germany) was quantified using macerations, in situ pillars and industry standard crushed samples. A new three t ...
paleoecology; grazing; pastoralism; treeline; anthropogenic activities; altitude; pollen; forests; sediments; pastures; ordination techniques; Picea abies; ecosystems; people; land use change; spores; fossils; Abies alba; climate change; species diversity; abandoned land; Pinus cembra; logging; Larix decidua; meadows; long term effects; charcoal; Alps region
Abstract:
... The resilience, diversity and stability of mountain ecosystems are threatened by climatic as well as land‐use changes, but the combined effects of these drivers are only poorly understood. We combine two high‐resolution sediment records from Iffigsee (2065 m a.s.l.) and Lauenensee (1382 m a.s.l.) at different elevations in the Northern Swiss Alps to provide a detailed history of vegetational chang ...
Prosopis juliflora; agricultural land; arid lands; case studies; charcoal; cotton; ecosystem engineers; ecosystem services; environmental impact; farms; fuelwood; introduced plants; land degradation; lifestyle; livelihood; people; sustainable land management; wetlands; Ethiopia
Abstract:
... The introduction of fast-growing plant species has been a strategy worldwide to combat problems arising from land degradation. Prosopis juliflora is an ecosystem engineer that was introduced to Ethiopia in the 1970s to address erosion problems but has subsequently become an important invader. This paper analyzes the spread of P. juliflora in Baadu, located in the middle Awash Basin of Ethiopia, qu ...
... Meat is one of the most imperative protein sources available with respect to its production and consumption. It is the richest source of some valuable nutrients like proteins, essential amino acids, polyunsaturated fatty acids, vitamins, and minerals like iron, zinc, and selenium. Thermal treatment produces conformational changes in protein structure as well as flavor, texture, and appearance, and ...
... Heterocyclic aromatic amines (HAAs), the potential mutagens/carcinogens, are formed during cooking meat at higher temperature. The current study was designed to evaluate the effects of various cooking methods, i.e., pan frying, deep frying, charcoal grilling and roasting, on the formation of HAAs in three different types of meat, i.e., beef, chicken and mutton. Physicochemical analysis of thermall ...
... This paper describes a small experiment involving the growth of sycamore (Acer pseudoplatanus) seedlings in nine different growing media, four of which included “biochar”. In a growing medium with very few nutrients or organic matter, the addition of biochar had no apparent effect on plant growth. However, in combination with added organic matter and inorganic fertiliser, the addition of biochar r ...
... The magnitude of demand for planting material in grape, mainly for rootstock genotypes indicates that micropropagation is inevitably necessary for their mass scale propagation, which has been a well-established methodology for in vitro regeneration of grapevine (Vitis vinifera L.). Here we present an efficient and optimized protocol for rapid in vitro regeneration of grapevine cultivar âThompson ...
activated carbon; charcoal; chemical oxygen demand; chlorates; decolorization; ferric oxide; gas chromatography-mass spectrometry; hydrogen peroxide; light; mineralization; nanocomposites; oxidants; photocatalysis; titanium dioxide; total organic carbon; wastewater treatment
Abstract:
... The present study is to investigate the effect of oxidants H₂O₂, S₂O₈²⁻, BrO₃⁻, ClO₃⁻ and IO₄⁻ with different concentrations on photoelectrocatalytic decolourization of Lanasol yellow 4G (LY4G) as a model contaminant using α-Fe₂O₃/TiO₂/activated charcoal plate (ACP) nanocomposite under visible light. In this system, the decolourization efficiency increased with increasing BrO₃⁻, ClO₃⁻ and IO₄⁻ dos ...
... Wood-based mesoporous activated carbon fibers (C-WACF) were prepared using wood charcoal (WC) as an additive. C-WACF with different WC contents (0, 0.5, 1, 1.5, 2 and 2.5 %) was characterized by N₂adsorption, SEM, XRD, and XPS. With more WC added, the BET specific surface area and total volume of C-WACF showed upsurge and reached a maxima at WC = 1 %, when WC > 1 % a diminishing trend was seen. Th ...
... In many arid and semi-arid regions, irrigated vegetable production leads to major carbon (C) and nitrogen (N) losses owing to high turnover rates. The goal of this experiment was therefore to test two amendments, activated charcoal and quebracho tannins, in their ability to stabilize soil organic carbon (SOC) from goat manure application in order to enhance nutrient and water retention. To this en ...
... As of 2012, the share of the Brazilian domestic energy supplied by renewable energy was 42.4%, the highest among all major economies in the world. Nonetheless, there are opportunities to increase this share even further. One such opportunity is the adoption of biorefineries that could represent a viable and sustainable alternative to replace the need for oil, coal, natural gas and other non-renewa ...
... Bioremediation is one of the most frequently used treatments for reducing high levels of organic contaminants from soil. This article complements previous work on the anaerobic bioremediation of soils contaminated with diesel, which has revealed the generation of high levels of greenhouse gases and volatile organic compounds by anaerobic bacteria activation. Unlike anaerobic methods that generate ...
... The aim of the present work was to estimate fixed-carbon, volatile matter and ash contents in Brazilian commercial charcoal by using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy together with multivariate calibration methods. Several multivariate calibration techniques, including partial least squares (PLS), interval partial least squares (iPLS), and genetic algo ...
... Radon (222Rn), thoron (220Rn), and their decay products contribute a major fraction (more than 50%) of doses received from ionisation radiation in public domain indoor environments and occupation environments such as uranium mines, thorium plants, and underground facilities, and are recognised as important radiological hazardous materials, which need to be controlled. This paper presents studies o ...
Eucalyptus grandis; Eucalyptus pellita; Eucalyptus robusta; Eucalyptus tereticornis; alternative crops; burning; charcoal; coppicing; fuelwood; highlands; markets; models; production technology; sweet potatoes; trees; Papua New Guinea
Abstract:
... A 2 year short-rotation coppicing (SRC) fuelwood production system was evaluated, at 2 tree densities (3333 and 6666 trees ha−1) for the Western Highlands Province (WHP) and National Capital District (NCD) of Papua New Guinea. Of the 10 species tested, the best production of firewood was from Eucalyptus grandis and Eucalyptus robusta in WHP and Eucalyptus tereticornis in the NCD, with values of 2. ...
... Carbothermal reduction of ZnO with beech charcoal has been performed in a directly irradiated, beam-down, continuously gravity-fed, 10 kW solar thermochemical receiver–reactor using a high-flux solar simulator. Upon reaching mean cavity temperatures between 1113 and 1446 K, a mixture of ZnO powder and charcoal particles was fed continuously from hoppers into the axisymmetric reactor to create a mo ...
... Supercritical water gasification technology has bright prospects because it can convert biomass into hydrogen-rich gaseous products in an effective and clean way. The devolatilization process is relatively fast, and char conversion is the rate-determining step in the whole gasification process. To discuss the kinetic model of char gasification in supercritical water, the quartz tube reactor was ad ...
Picea; Pinus; Quercus; burning; charcoal; climate; coastal plains; cooling; ecology; fires; forests; humans; lightning; sustainable forestry; trees; Eastern United States
Abstract:
... This review explores the long-term role of climate versus human activity on vegetation and fire dynamics in the eastern U.S. Early Holocene warming resulted in a conversion of Picea (boreal) to temperate Quercus and Pinus forests when indigenous populations were sparse but charcoal abundances were relatively high, underscoring the importance of climate. Pyrogenic trees also dominated during the mi ...
El Nino; anthropogenic activities; charcoal; climate change; data collection; environmental impact; fire regime; humans; land management; landscapes; paleoecology; people; Australia
Abstract:
... The extent of prehistoric human impact on the environment is a contentious topic in various palaeo-environmental sciences. The long history of humans in Australia and its extensive fire-prone biota makes this continent a key research area for better characterization of prehistoric human–fire interactions. Here we use statistically robust cross-correlation of archaeological radiocarbon data (n=4102 ...