keyword
MENU ▼
Read by QxMD icon Read
search

Temperment

keyword
https://www.readbyqxmd.com/read/29149758/oligotrophy-as-a-major-driver-of-mercury-bioaccumulation-in-medium-to-high-trophic-level-consumers-a-marine-ecosystem-comparative-study
#1
Tiphaine Chouvelon, Pierre Cresson, Marc Bouchoucha, Christophe Brach-Papa, Paco Bustamante, Sylvette Crochet, Françoise Marco-Miralles, Bastien Thomas, Joël Knoery
Mercury (Hg) is a global contaminant of environmental concern. Numerous factors influencing its bioaccumulation in marine organisms have already been described at both individual and species levels (e.g., size or age, habitat, trophic level). However, few studies have compared the trophic characteristics of ecosystems to explain underlying mechanisms of differences in Hg bioaccumulation and biomagnification among food webs and systems. The present study aimed at investigating the potential primary role of the trophic status of systems on Hg bioaccumulation and biomagnification in temperate marine food webs, as shown by their medium-to high-trophic level consumers...
November 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29149288/overexpression-of-seipin1-increases-oil-in-hydroxy-fatty-acid-accumulating-seeds
#2
Daniel Lunn, James G Wallis, John Browse
While plant oils are an important source of food, plants also produce oils containing specialized fatty acids with chemical and physical properties valued in industry. Ricinoleic acid, a hydroxy-fatty acid (HFA) produced in the seed of castor (Ricinus communis), is of particular value with a wide range of applications. Since castor cultivation is currently successful only in tropic climates, and because castor seed contain the toxin ricin, there are ongoing efforts to develop a temperate crop capable of HFA biosynthesis...
November 15, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29149208/synergistic-effects-of-the-components-of-global-change-increased-vegetation-dynamics-in-open-forest-steppe-grasslands-driven-by-wildfires-and-year-to-year-precipitation-differences
#3
Miklós Kertész, Réka Aszalós, Attila Lengyel, Gábor Ónodi
Climate change and land use change are two major elements of human-induced global environmental change. In temperate grasslands and woodlands, increasing frequency of extreme weather events like droughts and increasing severity of wildfires has altered the structure and dynamics of vegetation. In this paper, we studied the impact of wildfires and the year-to-year differences in precipitation on species composition changes in semi-arid grasslands of a forest-steppe complex ecosystem which has been partially disturbed by wildfires...
2017: PloS One
https://www.readbyqxmd.com/read/29147977/are-isomeric-alkenes-used-in-species-recognition-among-neo-tropical-stingless-bees-melipona-spp
#4
Stephen J Martin, Sue Shemilt, Cândida B da S Lima, Carlos A L de Carvalho
Our understanding of the role of cuticular hydrocarbons (CHC) in recognition is based largely on temperate ant species and honey bees. The stingless bees remain relatively poorly studied, despite being the largest group of eusocial bees, comprising more than 400 species in some 60 genera. The Meliponini and Apini diverged between 80-130 Myr B.P. so the evolutionary trajectories that shaped the chemical communication systems in ants, honeybees and stingless bees may be very different. The aim of this study was to study if a unique species CHC signal existed in Neotropical stingless bees, as has been shown for many temperate species, and what compounds are involved...
November 17, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29147932/girls-and-boys-just-want-to-have-fun-a-mixed-methods-examination-of-the-role-of-gender-in-youth-mentoring-relationship-duration-and-quality
#5
Renée Spencer, Alison L Drew, Jill Walsh, Stella S Kanchewa
This prospective, mixed-methods study examined the role of gender in youth mentoring relationship duration and quality. Participants were 67 gender-matched pairs of adult mentors and youth participating in community-based mentoring programs as well as the youths' guardians. Mentors and youth completed surveys and qualitative interviews at multiple time points. At baseline, male youth reported stronger relationships with their guardians. Analysis of the survey data from the 3-month follow-up revealed that male mentors and youth reported stronger mentoring relationship quality...
November 16, 2017: Journal of Primary Prevention
https://www.readbyqxmd.com/read/29147779/the-role-of-ants-in-north-temperate-grasslands-a-review
#6
REVIEW
B D Wills, D A Landis
Historic and current land-use changes have altered the landscape for grassland biota, with over 90% of grasslands and savannas converted to agriculture or some other use in north temperate regions. Reintegrating grasslands into agricultural landscapes can increase biodiversity while also providing valuable ecosystem services. In contrast to their well-known importance in tropical and subtropical ecosystems, the role of ants in temperate grasslands is often underappreciated. As consumers and ecosystem engineers, ants in temperate grasslands influence invertebrate, plant, and soil microbial diversity and potentially alter grassland productivity...
November 16, 2017: Oecologia
https://www.readbyqxmd.com/read/29147737/genetic-dissection-of-early-season-cold-tolerance-in-sorghum-genome-wide-association-studies-for-seedling-emergence-and-survival-under-field-and-controlled-environment-conditions
#7
Sebastian Parra-Londono, Karin Fiedler, Mareike Kavka, Birgit Samans, Silke Wieckhorst, Arndt Zacharias, Ralf Uptmoor
A QTL on sorghum chromosome SBI-06 putatively improves field emergence under low-temperature conditions. Low temperatures decisively limit seedling emergence and vigor during early growth of sorghum and, thus, strongly impair geographical expansion. To broaden sorghum cultivation to temperate regions, the establishment of cold-tolerant genotypes is a prioritized breeding goal. The present study aims at the quantification of seedling emergence and survival under chilling temperatures and the detection of marker-trait associations controlling temperature-related seedling establishment...
November 16, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29147573/risk-factors-for-exertional-rhabdomyolysis-with-renal-stress
#8
Terje Apeland, Tore Danielsen, Eva M Staal, Anders Åsberg, Inga S Thorsen, Tom Ole Dalsrud, Stein Ørn
Background: Exercise-induced rhabdomyolysis denotes the exertional damage of myocytes with leakage of sarcoplasmic content into the circulation. The purpose of this study was to determine important risk factors for the development of exertional rhabdomyolysis in a temperate climate and to study the renal effects of myoglobinuria. Methods: A cluster of eight military recruits was admitted to hospital due to exertional rhabdomyolysis with myoglobinuria. The patients were treated according to current guidelines with isotonic saline and alkalinisation of the urine...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29147020/integrative-taxonomy-methods-reveal-high-mealybug-hemiptera-pseudococcidae-diversity-in-southern-brazilian-fruit-crops
#9
Vitor C Pacheco da Silva, Mehmet Bora Kaydan, Thibaut Malausa, Jean-François Germain, Ferran Palero, Marcos Botton
The Serra Gaúcha region is the most important temperate fruit-producing area in southern Brazil. Despite mealybugs (Hemiptera: Pseudococcidae) infesting several host plants in the region, there is a lack of information about the composition of species damaging different crops. A survey of mealybug species associated with commercial fruit crops (apple, persimmon, strawberry and grapes) was performed in Serra Gaúcha between 2013 and 2015, using both morphology and DNA analyses for species identification. The most abundant species were Pseudococcus viburni (Signoret), found on all four host plant species, and Dysmicoccus brevipes (Cockerell), infesting persimmon, vines and weeds...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146513/seroprevalence-and-risk-factors-of-hepatitis-e-infection-in-jordan-population-first-report
#10
Mohammad M Obaidat, Amira A Roess
OBJECTIVES: Hepatitis E virus (HEV) is hyperendemic in many countries, but data on this virus are not available in Jordan. This study determined the seroprevalence, risk factors and zoonotic potential of HEV in a Jordanian population. METHODS: A total of 450 sera samples from 8 different governorates were tested for HEV-IgG. A pre-tested and validated questionnaire was used to collect risk factor data including animal interaction and environmental exposures. RESULTS: The overall seroprevalence was 30...
November 13, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29145047/effects-of-water-and-nitrogen-addition-on-ecosystem-respiration-across-three-types-of-steppe-the-role-of-plant-and-microbial-biomass
#11
Wei Liu, Xiaotao Lü, Wenfang Xu, Huiqiu Shi, Longyu Hou, Linghao Li, Wenping Yuan
Evaluating the regional variation of ecosystem respiration (Reco) in its response to the changes of soil water and nitrogen (N) availability is crucial for fully understanding ecosystem carbon (C) exchange and its feedbacks to global changes. Here, we examined the responses of Reco, plant community aboveground biomass (AB), microbial biomass carbon (MBC) and soil moisture (SM) to water and N addition, using intact soil monoliths from three different temperate steppes along a precipitation gradient, including meadow steppe, typical steppe, and desert steppe in northern China...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29143349/growth-rate-rather-than-growth-duration-drives-growth-heterosis-in-maize-b104-hybrids
#12
Kim Feys, Kirin Demuynck, Jolien De Block, Anchal Bisht, Alex De Vliegher, Dirk Inzé, Hilde Nelissen
Research in maize is often performed using inbred lines which can be readily transformed, such as B104. However, B104 flowers late so that the kernels not always mature before the end of the growing season, hampering routine seed yield evaluations of biotech traits introduced in B104 at many geographical locations. Therefore, we generated five hybrids by crossing B104 with the early-flowering inbred lines CML91, F7, H99, Mo17 and W153R and showed in three consecutive years that the hybrid lines proved to be suitable to evaluate seed yield under field conditions in a temperate climate...
November 16, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29143261/river-sediment-metal-and-nutrient-variations-along-an-urban-agriculture-gradient-in-an-arid-austral-landscape-implications-for-environmental-health
#13
Tatenda Dalu, Ryan J Wasserman, Qihang Wu, William P Froneman, Olaf L F Weyl
The effect of metals on environmental health is well documented and monitoring these and other pollutants is considered an important part of environmental management. Developing countries are yet to fully appreciate the direct impacts of pollution on aquatic ecosystems and as such, information on pollution dynamics is scant. Here, we assessed the temporal and spatial dynamics of stream sediment metal and nutrient concentrations using contaminant indices (e.g. enrichment factors, pollution load and toxic risk indices) in an arid temperate environment over the wet and dry seasons...
November 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29143171/neonicotinoid-insecticides-in-pollen-honey-and-adult-bees-in-colonies-of-the-european-honey-bee-apis-mellifera-l-in-egypt
#14
Garry Codling, Yahya Al Naggar, John P Giesy, Albert J Robertson
Honeybee losses have been attributed to multiple stressors and factors including the neonicotinoid insecticides (NIs). Much of the study of hive contamination has been focused upon temperate regions such as Europe, Canada and the United States. This study looks for the first time at honey, pollen and bees collected from across the Nile Delta in Egypt in both the spring and summer planting season of 2013. There is limited information upon the frequency of use of NIs in Egypt but the ratio of positive identification and concentrations of NIs are comparable to other regions...
November 15, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/29141036/the-disjunct-pattern-of-the-neotropical-harvestman-discocyrtus-dilatatus-gonyleptidae-explained-by-climate-driven-range-shifts-in-the-quaternary-paleodistributional-and-molecular-evidence
#15
Julia Vergara, Luis E Acosta, Raúl E González-Ittig, Luis M Vaschetto, Cristina N Gardenal
The disjunct distribution of the harvestman Discocyrtus dilatatus (Opiliones, Gonyleptidae) is used as a case study to test the hypothesis of a trans-Chaco Pleistocene paleobridge during range expansion stages. This would have temporarily connected humid regions ('Mesopotamia' in northeastern Argentina, and the 'Yungas' in the northwest, NWA) in the subtropical and temperate South American lowlands. The present study combines two independent approaches: paleodistributional reconstruction, using the Species Distribution Modeling method MaxEnt and projection onto Quaternary paleoclimates (6 kya, 21 kya, 130 kya), and phylogeographic analyses based on the cytochrome oxidase subunit I molecular marker...
2017: PloS One
https://www.readbyqxmd.com/read/29138015/anti-phase-synchronization-of-influenza-a-h1n1-and-a-h3n2-in-hong-kong-and-countries-in-the-north-temperate-zone
#16
Alice P Y Chiu, Qianying Lin, Edwin Yiu Nam Tang, Daihai He
OBJECTIVES: Influenza affects 10% of the global population annually. Hong Kong is a subtropical city close to the North Temperate Zone (NTZ). Its influenza-associated mortality rates were 27.53, 79.55, 36.94, 48.72 per one million person-years in 2014, 2015, 2016 and January to July 2017 respectively. Our study aims at exploring the temporal patterns of influenza A subtypes both in Hong Kong and the NTZ. METHOD: Weekly reported cases of Influenza A/H1N1 and A/H3N2 from January 2010 to July 2017 were downloaded from the Centre for Health Protection in HK and the FluNet provided by the World Health Organization...
November 11, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29137604/varicella-zoster-virus-associated-morbidity-and-mortality-in-africa-a-systematic-review
#17
Hannah Hussey, Leila Abdullahi, Jamie Collins, Rudzani Muloiwa, Gregory Hussey, Benjamin Kagina
BACKGROUND: Varicella zoster virus (VZV) causes varicella and herpes zoster. These vaccine preventable diseases are common globally. Most available data on VZV epidemiology are from industrialised temperate countries and cannot be used to guide decisions on the immunization policy against VZV in Africa. This systematic review aims to review the published data on VZV morbidity and mortality in Africa. METHODS: All published studies conducted in Africa from 1974 to 2015 were eligible...
November 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29137118/modeling-skin-injury-from-hot-spills-on-clothing
#18
Torgrim Log
The present work analyzes scald burns from hot beverages, such as coffee and tea, spilled on the lap, i.e., an incident that may occur in daily life. The Pennes bioheat equation is solved numerically for small spills wetting the clothing, i.e., the fabric prevents the spilled liquid from draining away. Temperatures are analyzed in the wetted fabric and the skin layers and the resulting skin injury is calculated based on the basal layer temperature. Parameters influencing burn severity, such as clothing thickness, liquid temperature, removal of fabric and thermal effects of post scald water cooling are analyzed...
November 11, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29136124/what-is-the-clinical-significance-of-ventricular-mural-antagonism
#19
Paul P Lunkenheimer, Peter Niederer, Robert S Stephenson, Klaus Redmann, Randas V Batista, Morten Smerup, Robert H Anderson
Recent morphological studies provide evidence that the ventricular walls are arranged as a 3D meshwork of aggregated cardiomyocyte chains, exhibiting marked local structural variations. In contrary to previous findings, up to two-fifths of the chains are found to have a partially transmural alignment, thus deviating from the prevailing tangential orientation. Upon contraction, they produce, in addition to a tangential force, a radial force component that counteracts ventricular constriction and aids widening of the ventricular cavity...
November 9, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29134739/phenotypic-plasticity-in-response-to-environmental-heterogeneity-contributes-to-fluctuating-asymmetry-in-plants-first-empirical-evidence
#20
Branka Tucić, Sanja Budečević, Sanja Manitašević Jovanović, Ana Vuleta, Christian Peter Klingenberg
Fluctuating asymmetry (FA) is widely used to quantify developmental instability (DI) in ecological and evolutionary studies. It has long been recognized that FA may not exclusively originate from DI for sessile organisms such as plants, because phenotypic plasticity in response to heterogeneities in the environment might also produce FA. This study provides the first empirical evidence for this hypothesis. We reasoned that solar irradiance, which is greater on the southern side than on the northern side of plants growing in the temperate zone of the northern hemisphere, would cause systematic morphological differences and asymmetry associated with the orientation of plant parts...
November 13, 2017: Journal of Evolutionary Biology
keyword
keyword
35938
1
2
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"