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https://www.readbyqxmd.com/read/29668009/ecological-drivers-of-plant-genetic-diversity-at-the-southern-edge-of-geographical-distributions-forestal-vines-in-a-temperate-region
#1
Michel J F Barros, José Alexandre F Diniz-Filho, Loreta B Freitas
The Tropical Niche Conservatism hypothesis is one of the most relevant theories to explain why tropical diversity is high, although the mechanisms underlying this hypothesis require further clarification. A possible research avenue to address the underlying mechanisms includes determining population-level processes associated with such a hypothesis, in particular by trying to identify how adaptation may occur in extreme niche conditions at the edges of species ranges. However, the determinants of molecular diversity at the edges of geographical distributions of tropical taxa are still poorly known...
2018: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/29667534/assessing-manual-wheelchair-caster-design-for-mobility-in-winter-conditions
#2
M Berthelette, D D Mann, J Ripat, C M Glazebrook
Wheelchair users who live in cold climates are faced with daily difficulties related to personal independence and societal inclusion, as their assistive devices are unable to overcome the physical barriers created by snow and ice. The purpose of the research was to evaluate four commercially available casters to determine which caster performed best on snow-covered surfaces. Performance measures included: travel time, force transfer through the palms of the hands, number of propulsive movements, static resistance to movement, kinetic resistance to movement, and caster penetration into the packed snow...
April 18, 2018: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/29667526/optimizing-best-management-practices-to-control-anthropogenic-sources-of-atmospheric-phosphorus-deposition-to-inland-lakes
#3
Lee Weiss, Jesse Thé, Jennifer Winter, Bahram Gharabaghi
Excessive phosphorus loading to inland freshwater lakes around the globe has resulted in nuisance plant growth along the waterfronts, degraded habitat for cold water fisheries, and impaired beaches, marinas and waterfront property. The direct atmospheric deposition of phosphorus can be a significant contributing source to inland lakes. The atmospheric deposition monitoring program for Lake Simcoe, Ontario indicates roughly 20% of the annual total phosphorus load (2010-2014 period) is due to direct atmospheric deposition (both wet and dry deposition) on the lake...
April 18, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/29667482/hot-utilitarianism-and-cold-deontology-insights-from-a-response-patterns-approach-to-sacrificial-and-real-world-dilemmas
#4
Alejandro Rosas, Hugo Viciana, Esteban Caviedes, Alejandra Arciniegas
Research on moral judgment with moral dilemmas suggests that "utilitarian" responses (UR) to sacrificial high-conflict dilemmas are due to decreased harm aversion, not only in individuals with clinical conditions, but also in healthy participants with high scores in antisocial personality traits. We investigated the patterns of responses to different dilemma types in healthy participants and present evidence that some URs to sacrificial dilemmas are morally motivated, as indicated by their empathic concern (EC) or primary psychopathy (PP) scores...
April 18, 2018: Social Neuroscience
https://www.readbyqxmd.com/read/29667328/insights-into-the-regulation-of-cbf-cold-signaling-in-plants
#5
REVIEW
Jingyan Liu, Yiting Shi, Shuhua Yang
Cold temperatures, a major abiotic stress, threaten the growth and development of plants worldwide. To cope with this adverse environmental cue, plants from temperate climates have evolved an array of sophisticated mechanisms to acclimate to cold periods, increasing their ability to tolerate freezing stress. Over the last decade, significant progress has been made in determining the molecular mechanisms underpinning cold acclimation following the identification of several pivotal components, including candidates for cold sensors, protein kinases, and transcription factors...
April 18, 2018: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29667037/use-of-seasonal-parameters-and-their-effects-on-fod-landfill-gas-modeling
#6
Nathan Bruce, Kelvin Tsun Wai Ng, Hoang Lan Vu
Temporal and spatial variations in landfill gas generations and emissions have been observed and reported by others. Real-time gas data between 2008 and 2014 from a municipal landfill located in a cold, semi-arid climate were consolidated to fit a linear-interpolated form of LandGEM. Seasonal variations in gas collection were observed in the landfill. LandGEM's default decay rate k was not applicable for this Canadian landfill due to significant overestimation (32.2% error). Optimal seasonal k and Lo collection parameters had 8...
April 18, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29667035/hatching-delays-in-great-tits-and-blue-tits-in-response-to-an-extreme-cold-spell-a-long-term-study
#7
Michał Glądalski, Mirosława Bańbura, Adam Kaliński, Marcin Markowski, Joanna Skwarska, Jarosław Wawrzyniak, Piotr Zieliński, Jerzy Bańbura
Variation in ambient temperature affects various life stages of organisms. It has been suggested that climate change not only implies higher global temperatures but also more unpredictable weather and more frequent extreme weather events. Temperature has a major influence on the optimal laying-incubation-hatching dates of insectivorous passerines, because it poses energetic constraints and affects the timing of food abundance. We have been studying breeding characteristics of great tits Parus major and blue tits Cyanistes caeruleus in two areas, an urban parkland and a deciduous forest, around the city of Łódź since 2002...
April 17, 2018: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29666763/the-distribution-of-organic-carbon-fractions-in-a-typical-loess-paleosol-profile-and-its-paleoenvironmental-significance
#8
Qingqing Zhang, Jinghua Huang, Feinan Hu, Na Huo, Yingni Shang, Wenqian Chang, Shiwei Zhao
Background: The loess-paleosol sequence on the Loess Plateau has been considered an important paleoclimatic archive to study global climatic and environmental changes in the Quaternary. So far, little attention has been paid to the characteristics of soil organic carbon fractions in loess-paleosol sequences, which may provide valuable information for exploring the evolution of climate and environment in the Quaternary on the Loess Plateau. Methods: In order to explore the significance of mineral-associated organic carbon to total organic carbon (MOC/TOC) ratios in the loess-paleosol sequence for reconstructing paleoenvironmental and paleoclimatic evolution in the Quaternary on the Loess Plateau, we selected a typical loess-paleosol profile in Chunhua county, Xianyang city, Shaanxi province, as the research object...
2018: PeerJ
https://www.readbyqxmd.com/read/29666659/using-real-time-syndromic-surveillance-to-analyze-the-impact-of-a-cold-weather-event-in-new-mexico
#9
Victoria F Dirmyer
Objective: This report describes the development of a novel syndromic cold weather syndrome for use in monitoring the impact of cold weather events on emergency department attendance. Methods: Syndromic messages from seven hospitals were analyzed for ED visits that occurred over a 12-day period. A cold weather syndrome was defined using terms in the self-reported chief complaint field as well as specific ICD-10-CM codes related to cold weather. A κ statistic was calculated to assess the overall agreement between the chief complaint field and diagnosis fields to further refine the cold weather syndrome definition...
2018: Journal of Environmental and Public Health
https://www.readbyqxmd.com/read/29666552/mapping-abiotic-stresses-for-rice-in-africa-drought-cold-iron-toxicity-salinity-and-sodicity
#10
P A J van Oort
Maps of abiotic stresses for rice can be useful for (1) prioritizing research and (2) identifying stress hotspots, for directing technologies and varieties to those areas where they are most needed. Large-scale maps of stresses are not available for Africa. This paper considers four abiotic stresses relevant for rice in Africa (drought, cold, iron toxicity and salinity/sodicity). Maps showing hotspots of the stresses, the countries most affected and total potentially affected area are presented. In terms of relative importance, the study identified drought as the most important stress (33% of rice area potentially affected), followed by iron toxicity (12%) and then cold (7%) and salinity/sodicity (2%)...
April 15, 2018: Field Crops Research
https://www.readbyqxmd.com/read/29666539/oxidative-status-of-a-yogurt-like-fermented-maize-product-containing-phytosterols
#11
Adriana María Descalzo, Sergio Aníbal Rizzo, Adrien Servent, Luciana Rossetti, Marc Lebrun, Carolina Daiana Pérez, Renaud Boulanger, Christian Mestres, Dominique Pallet, Claudie Dhuique-Mayer
This work describes the formulation of a functional yogurt-like product based on fermented maize with added phytosterols and its oxidative stability during cold storage. The technological challenge was to stabilize 3.5% esterified phytosterols (between 2 and 3 g of free sterols) in a low-fat emulsion and to preserve the obtained product throughout processing and storage. The natural bioactive compounds: lutein, zeaxanthin, β-cryptoxanthin, β-carotene and γ-tocopherol were detected in the yogurt, and remained stable during 12 days of refrigeration...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29666532/effect-of-argel-solenostemma-argel-leaf-extract-on-quality-attributes-of-chicken-meatballs-during-cold-storage
#12
Fahad Y Al-Juhaimi, Syed A Shahzad, Ali S Ahmed, Oladipupo Q Adiamo, Isam A Mohamed Ahmed, Omer N Alsawmahi, Kashif Ghafoor, Elfadil E Babiker
This study aimed to evaluate the antioxidant activity of Argel leaf water extract (ALWE) and its effect at different concentrations (0, 5, 10, and 20 mg/100 mL) on the antioxidant, antimicrobial, physicochemical, and sensory attributes of chicken meatballs during cold storage. ALWE contained substantial quantities of total phenolic content (TPC), anthocyanin, and exhibited high DPPH scavenging activity. ALWE incorporation in chicken meatballs had a varying effect on the chemical composition and sensory attributes of the product...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29666524/comparison-of-high-pressure-and-high-temperature-short-time-processing-on-quality-of-carambola-juice-during-cold-storage
#13
Hsiao-Wen Huang, Bang-Yuan Chen, Chung-Yi Wang
This study validated high hydrostatic pressure processing (HPP) for achieving greater than 5-log reductions of Escherichia coli O157:H7 in carambola juice and determined shelf life of processed juice stored at 4 °C. Carambola juice processed at 600 MPa for 150 s was identified capable of achieving greater than 5.15-log reductions of E. coli O157:H7, and the quality was compared with that of high temperature short time (HTST)-pasteurized juice at 110 °C for 8.6 s. Aerobic, psychrotrophic, E. coli /coliform, and yeasts and moulds in the juice were reduced by HPP or HTST to levels below the minimum detection limit (< 1...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29666513/bioactive-compounds-and-in-vitro-antioxidant-activity-of-some-traditional-and-non-traditional-cold-pressed-edible-oils-from-macedonia
#14
Sanja Kostadinović Veličkovska, Augustin Catalin Moţ, Saša Mitrev, Rubin Gulaboski, Ludger Brühl, Hamed Mirhosseini, Radu Silaghi-Dumitrescu, Bertrand Matthäus
The bioactive compounds and "in vitro" antioxidant activity measured by three antioxidant assays of some traditional and non-traditional cold-pressed edible oils from Macedonia were object of this study. The fatty acid composition showed dominance of monounsaturated oleic acid in "sweet" and "bitter" apricot kernel oils with percentages of 66.7 ± 0.5 and 57.8 ± 0.3%, respectively. The most dominant fatty acid in paprika seed oil was polyunsaturated linoleic acid with abundance of 69...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29666428/social-thermoregulation-as-a-potential-mechanism-linking-sociality-and-fitness-barbary-macaques-with-more-social-partners-form-larger-huddles
#15
Liz A D Campbell, Patrick J Tkaczynski, Julia Lehmann, Mohamed Mouna, Bonaventura Majolo
Individuals with more or stronger social bonds experience enhanced survival and reproduction in various species, though the mechanisms mediating these effects are unclear. Social thermoregulation is a common behaviour across many species which reduces cold stress exposure, body heat loss, and homeostatic energy costs, allowing greater energetic investment in growth, reproduction, and survival, with larger aggregations providing greater benefits. If more social individuals form larger thermoregulation aggregations due to having more potential partners, this would provide a direct link between sociality and fitness...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29666397/insight-into-the-cold-adaptation-and-hemicellulose-utilization-of-cladosporium-neopsychrotolerans-from-genome-analysis-and-biochemical-characterization
#16
Rui Ma, Huoqing Huang, Yingguo Bai, Huiying Luo, Yunliu Fan, Bin Yao
The occurrence of Cladosporium in cold ecosystems has been evidenced long before, and most of the knowledge about nutrient utilization of this genus is sporadic. An alpine soil isolate C. neopsychrotolerans SL-16, showing great cold tolerance and significant lignocellulose-degrading capability, was sequenced to form a 35.9 Mb genome that contains 13,456 predicted genes. Functional annotation on predicted genes revealed a wide array of proteins involved in the transport and metabolism of carbohydrate, protein and lipid...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29666235/mass-and-heat-transfer-between-evaporation-and-condensation-surfaces-atomistic-simulation-and-solution-of-boltzmann-kinetic-equation
#17
Vasily V Zhakhovsky, Alexei P Kryukov, Vladimir Yu Levashov, Irina N Shishkova, Sergey I Anisimov
Boundary conditions required for numerical solution of the Boltzmann kinetic equation (BKE) for mass/heat transfer between evaporation and condensation surfaces are analyzed by comparison of BKE results with molecular dynamics (MD) simulations. Lennard-Jones potential with parameters corresponding to solid argon is used to simulate evaporation from the hot side, nonequilibrium vapor flow with a Knudsen number of about 0.02, and condensation on the cold side of the condensed phase. The equilibrium density of vapor obtained in MD simulation of phase coexistence is used in BKE calculations for consistency of BKE results with MD data...
April 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29665852/a-novel-method-for-demonstrating-cold-agglutinin-disease-a-case-report
#18
Thomas A Vo, Zack Oakey, Yasir A Khan, Donald S Minckler
BACKGROUND: Cold agglutinin disease is a rare disorder characterized by an autoimmune hemolytic anemia occurring at low temperatures. Physical examination findings, often limited to acrocyanosis, are combined with a thermal amplitude test to help establish the diagnosis. Thermal amplitude testing determines the highest temperature at which the cold agglutination will occur and is an important parameter in diagnosing cold agglutinin disease. CASE PRESENTATION: Here we describe a 57-year-old white man of German and Nicaraguan descent with known chronic cold agglutinin disease who presented to our ophthalmology clinic for evaluation of a cataract...
April 18, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29665588/current-technique-and-application-of-percutaneous-cryotherapy
#19
Andreas H Mahnken, Alexander Marc König, Jens Holger Figiel
PURPOSE:  Local ablative therapies have become an established treatment option in interventional oncology. Radiofrequency ablation (RFA) and microwave ablation (MWA) are a standard of care in the treatment of hepatocellular carcinoma (HCC). Currently, there is an increasing interest in cryotherapy, one of the oldest ablation techniques. It has some unique characteristics with regard to technology and mechanism of action. MATERIALS AND METHODS:  A systematic literature search using the terms cryotherapy, cryosurgery and cryoablation was performed...
April 17, 2018: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/29665531/biodegradation-of-oil-spill-dispersant-surfactants-in-cold-seawater
#20
Odd Gunnar Brakstad, Trond R Størseth, Anders Brunsvik, Kristin Bonaunet, Liv-Guri Faksness
While biodegradation of chemically dispersed oil has been well documented, only a few studies have focused on the degradation of the dispersant compounds themselves. The objective of this study was to determine the biodegradation of dispersant surfactants in cold seawater, relevant for deep sea or Arctic conditions. Biotransformation of the surfactants dioctyl-sodium sulfosuccinate (DOSS), Tween 80, Tween 85, and α/β-ethylhexylsulfosuccinate (EHSS, expected DOSS hydrolysis product) in the commercial dispersants Corexit 9500, Dasic Slickgone NS and Finasol OSR52 were determined...
April 11, 2018: Chemosphere
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