Read by QxMD icon Read

Experimental burn

Fatma Esen, Yücel Tasdemir, Yıldız Mine Bozkurt
Air samples were collected at a semi-rural area between February 2013 and February 2014 to determine the concentrations and gas/particle partitionings of polycyclic aromatic hydrocarbons (PAHs). The sampling was done with a high volume air sampler to cover four seasons and 40 samples were taken. Each sample period was about 24 h. The gas-particle partition coefficients (Kp ) of PAHs were calculated and correlated with their subcooled liquid vapor pressures ( <mml:math xmlns:mml=""> <mml:mrow> <mml:msubsup> <mml:mrow> <mml:mi>P</mml:mi> </mml:mrow> <mml:mtext>L</mml:mtext> <mml:mn>0</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> )...
February 12, 2019: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Xiaoyan Song, Genxu Wang, Zhaoyong Hu, Fei Ran, Xiaopeng Chen
Boreal forests store large amounts of organic carbon and are susceptible to climate changes, particularly rising temperature, changed soil water and increased fire frequency. The young post-fire ecosystems might occupy larger proportions of the boreal forests region with the expected increases in fire frequency in the future and change the carbon (C) balance of this region. However, it is unclear how soil C fluxes in the post-fire boreal forest response to the climate changes. Therefore, a two-year field experiment was conducted in a boreal forest to investigate the effects of fire on the soil C (CO2 and CH4 ) fluxes and the responses of these fluxes to simulated warmer and drier climate conditions...
December 10, 2018: Science of the Total Environment
Gabriel M R Gonino, Bruno R S Figueiredo, Gislaine I Manetta, Gustavo H Zaia Alves, Evanilde Benedito
Sugarcane is one of the main crops used around the world as a feedstock for the production of sucrose and biofuel. Prior to harvesting, sugarcane dry leaves are burned to facilitate manual cutting and enhance productivity. This practice generates ashes from sugarcane straw (hereafter referred as SCA), which may be carried to aquatic ecosystems, where its impacts on organisms and ecosystem integrity remain unknown. Here, we experimentally tested the toxicity of five different concentrations of SCA (0, 1000, 1500, 2000 and 2500 mg/L) on three native (Astyanax lacustris, Moenkhausia bonita and M...
February 2, 2019: Science of the Total Environment
R Miller, J C R Wormald, R G Wade, D P Collins
BACKGROUND: In the reconstruction of burns using split-skin grafts (SSGs), fibrin glue can be used to improve graft take and reduce haematoma formation, although the efficacy and cost-effectiveness are unknown. This systematic review evaluated outcomes of fibrin glue compared with conventional SSG attachment techniques. Outcomes of interest included SSG take, haematoma formation, patient satisfaction and cost-effectiveness. METHODS: This PROSPERO-registered review was performed in accordance with the Cochrane Handbook for Systematic Reviews of Interventions and PRISMA statement...
February 2019: British Journal of Surgery
Rafael Gialdi Salvagni, Felipe Roman Centeno, Maria Luiza Sperb Indrusiak
Hazardous fires in fuel storage tanks may result in casualties of great impact. Efforts are being done to master the physics of the phenomena, aiming both avoidance and damage minimization. Flame characterization is an important approach studied by many researchers. This article presents the results of an experimental investigation of diesel oil (S500 type) pool fires under air crossflow conditions. A reduced scale model properly instrumented was tested in an aerodynamic channel. Measurement techniques include analysis of infrared images of pool fires, mass burning rates and flame geometry as a function of air crossflow velocity (which ranged from 0 m/s - quiescent air - to 4...
January 25, 2019: Journal of Hazardous Materials
Charles B Halpern, Joseph A Antos, Shan Kothari, Annette M Olson
Woody-plant encroachment represents a global threat to grasslands. Although the causes and consequences of this regime shift have received substantial attention, the processes that constrain reassembly of the grassland state remain poorly understood. We experimentally tested two potentially important controls on reassembly-the past influence of trees and the effects of fire-in conifer-invaded grasslands (mountain meadows) of western Oregon. Previously, we had reconstructed the history of tree invasion at fine spatial and temporal resolution...
January 31, 2019: Ecological Applications: a Publication of the Ecological Society of America
Alexandra Voce, Bianca Calabria, Richard Burns, David Castle, Rebecca McKetin
OBJECTIVES: The psychiatric symptom profile of methamphetamine-associated psychosis (MAP) has varied considerably across studies of different research designs. We performed a systematic review to examine the available evidence for specific psychotic symptoms associated with MAP, including the clinical course and longitudinal changes in this symptom profile. METHODS: Five key electronic databases were searched to identify studies that examined the symptom profile or clinical course of MAP in individuals identified as having MAP...
January 29, 2019: Substance Use & Misuse
Abu Asaduzzaman, Demian Riccardi, Akef T Afaneh, Sarah J Cooper, Jeremy C Smith, Feiyue Wang, Jerry M Parks, Georg Schreckenbach
Mercury (Hg) is a global environmental contaminant. Major anthropogenic sources of Hg emission include gold mining and the burning of fossil fuels. Once deposited in aquatic environments, Hg can undergo redox reactions, form complexes with ligands, and adsorb onto particles. It can also be methylated by microorganisms. Mercury, especially its methylated form methylmercury, can be taken up by organisms, where it bioaccumulates and biomagnifies in the food chain, leading to detrimental effects on ecosystem and human health...
January 28, 2019: Accounts of Chemical Research
M Belén Hinojosa, V Armando Laudicina, Antonio Parra, Enrique Albert-Belda, Jose M Moreno
The effects of drought on soil dynamics after fire are poorly known, particularly its longer-term (i.e., years) legacy effects once rainfall returns to normal. Understanding this is particularly important for nutrient-poor soils in semi-arid regions affected by fire, in which rainfall is projected to decrease with climate change. Here, we studied the effects of post-fire drought and its legacy on soil microbial community structure and functionality in a Cistus-Erica shrubland (Spain). Rainfall total and patterns were experimentally modified to produce an unburned control (natural rainfall) and four burned treatments: control (natural rainfall), historical control (long-term average rainfall), moderate drought (percentile 8 historical rainfall, five months of drought per year), and severe drought (percentile 2, seven months of drought)...
January 25, 2019: Global Change Biology
J F Sánchez-Pérez, D Vicente-Agullo, M Barberá, E Castro-Rodríguez, M Cánovas
In this paper, a relation between the ultraviolet index (UVI) as a Sun exposure time and its effects in the form of burns according to the skin type has been elaborated. Moreover, we present a new expression that relates the intensity of solar radiation and the UVI, as well as expressions to obtain the percentage of population affected both by first and second degree lllsunburn for every skin-type. The results have been adjusted and validated through experimental results taken from the bibliography. Finally, this paper presents a table where the population can easily interpret the UVI values and calculate the maximum time one can be exposed to solar radiation without getting sunburn...
January 24, 2019: Scientific Reports
Rebecca L Jones, Stephanie A Lang, Jessica A Kendziorski, Alexis D Greene, Katherine A Burns
BACKGROUND: Endometriosis is a gynecological disease affecting 1 in 10 women of reproductive age. Endometriosis incidence has risen; however, whether this rise is due to disease awareness or environmental contamination is not known. OBJECTIVE: The objective of this study was to determine if bisphenol A (BPA) or bisphenol AF (BPAF) potentiate the development of endometriosis and if hormonal status alters how toxicant exposure affects disease. METHODS: A mouse model of endometriosis, where minced uterine tissue is injected into the peritoneal cavity of a host mouse, was used to examine the effects of BPA and BPAF on endometriosis lesion development in ovariectomized and hormonally intact mice...
December 2018: Environmental Health Perspectives
Anthony J Viera, Ziya Gizlice, Laura Tuttle, Emily Olsson, Julie Gras-Najjar, Derek Hales, Laura Linnan, Feng-Chang Lin, Seth M Noar, Alice Ammerman
BACKGROUND: Calorie labeling on restaurant menus is a public health strategy to guide consumer ordering behaviors, but effects on calories purchased have been minimal. Displaying labels communicating the physical activity required to burn calories may be a more effective approach, but real-world comparisons are needed. METHODS: In a quasi-experimental study, we examined the effect of physical activity calorie expenditure (PACE) food labels compared to calorie-only labels on point-of-decision food purchasing in three worksite cafeterias in North Carolina...
January 23, 2019: BMC Public Health
Mohammad Heidari, Roodabeh Bahramsoltani, Amir Hossein Abdolghaffari, Roja Rahimi, Mohammadamin Esfandyari, Maryam Baeeri, Gholamreza Hassanzadeh, Mohammad Abdollahi, Mohammad Hosein Farzaei
Tragopogon graminifolius DC. is a perennial plant from the family Asteraceae which grows in West parts of Iran. Several biological activities like antimicrobial, antioxidant and anti-inflammatory effects are reported for the plant. The aim of this study was to assess the wound healing activity of standardized extract from T. graminifolius (TG) aerial parts. Topical standardized TG extract with 5% and 10% concentrations in eucerine base was assessed for its healing properties on second degree burn in rats during a 14-day period...
January 2019: Journal of Traditional and Complementary Medicine
Wolfgang Junge
Cyanobacteria and plants carry out oxygenic photosynthesis. They use water to generate the atmospheric oxygen we breathe and carbon dioxide to produce the biomass serving as food, feed, fibre and fuel. This paper scans the emergence of structural and mechanistic understanding of oxygen evolution over the past 50 years. It reviews speculative concepts and the stepped insight provided by novel experimental and theoretical techniques. Driven by sunlight photosystem II oxidizes the catalyst of water oxidation, a hetero-metallic Mn4CaO5(H2O)4 cluster...
January 2019: Quarterly Reviews of Biophysics
Zahra Teimouri, Amin Salem, Shiva Salem
The discharge of organic dye into environment is the threat to hydrosphere and biosphere. On the other hands, the agriculture solid wastes such walnut and almond shells pose serious pollutions in lithosphere and atmosphere when burned. The aim of present investigation is to fabricate microporous activated carbon from agriculture waste shells by microwave irradiation as efficient adsorbent to overcome these problems. Firstly, zinc chloride was impregnated into milled shell particles, 300 μm, by conventional and microwave-assisted techniques and then the dry precursors were heated in the closed and open ceramic vessels in air and nitrogen atmospheres...
January 22, 2019: Environmental Science and Pollution Research International
Muhammad Bilal, Muhammad Adeel, Tahir Rasheed, Yuping Zhao, Hafiz M N Iqbal
The widespread occurrence and adverse environmental and health-related impacts of various types of emerging contaminants (ECs) have become an issue of high concern. With ever increasing scientific knowledge, socio-economic awareness, health-related problems and ecological apprehensions, people are more concerned about the widespread ECs, around the globe. Among ECs, biologically active compounds from pharmaceutical, cosmeceutical, biomedical, personal care products (PPCPs), endocrine-disrupting chemicals (EDCs), and flame-retardants are of paramount concern...
January 17, 2019: Environment International
Biao Feng, Zhao Yang, Zijian Lv, Rui Zhai, Yubo Chen, Wenzhong Zhao
Refrigerants with low global warming potential (GWP), will play an important role in the research of alternative refrigerants and the development of new refrigerants, but most of them are flammable. And the actual environment of the refrigeration system varies with different factors, especially gas disturbance. In this paper, the combustion characteristics of four refrigerants, i.e., isobutane (R600a), ethylene (R1150), propane (R290), and 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) under the conventional static and the gas disturbance were studied...
January 2, 2019: Journal of Hazardous Materials
Molly B Moravek, Leslie C Appiah, Antoinette Anazodo, Karen C Burns, Veronica Gomez-Lobo, Holly R Hoefgen, Olivia Jaworek Frias, Monica M Laronda, Jennifer Levine, Lillian R Meacham, Mary Ellen Pavone, Gwendolyn P Quinn, Erin E Rowell, Andrew C Strine, Teresa K Woodruff, Leena Nahata
Infertility is known to decrease quality of life among adults. In some cases, infertility is caused by medical conditions and/or treatments prescribed in childhood, and using methods to protect or preserve fertility may expand future reproductive possibilities. Structured programs to offer counseling about infertility risk and fertility preservation options are essential in the care of pediatric patients facing fertility-threatening conditions or treatments, yet multiple barriers to program development exist...
January 14, 2019: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
D H Butler, S Koivisto, V Brumfeld, R Shahack-Gross
Salmonid resources currently foster socioeconomic prosperity in several nations, yet their importance to many ancient circumpolar societies is poorly understood due to insufficient fish bone preservation at archaeological sites. As a result, there are serious gaps in our knowledge concerning the antiquity of northern salmonid fisheries and their impacts on shaping biodiversity, hunter-gatherer adaptations, and human-ecological networks. The interdisciplinary study presented here demonstrates that calcium-magnesium phosphate minerals formed in burned salmonid bones can preserve at ancient northern sites, thus informing on the early utilization of these resources despite the absence of morphologically classifiable bones...
January 16, 2019: Scientific Reports
Bora Yucel, Atilla Coruh, Kemal Deniz
Saving the zone of stasis is a major subject of the burn wound studies. If pathological changes in zone of stasis can be minimized, conversion of burns may be prevented. The aim of this study was to investigate the effects of pentoxifylline (PTX) on the zone of stasis in burns and burn wound healing. Twenty Sprague Dawley rats were used in this study. Comb model was used to create zone of stasis in burns. Rats were randomly divided into two groups. Treatment group received a total of 200 mg/kg/day of pentoxifylline in two equal doses intraperitoneally whilst isotonic saline solution was administered intraperitoneally to the control group...
January 12, 2019: Journal of Burn Care & Research: Official Publication of the American Burn Association
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"