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https://www.readbyqxmd.com/read/29782838/non-invasive-assessment-of-glucocorticoid-and-androgen-metabolite-levels-in-cooperatively-breeding-damaraland-mole-rats-fukomys-damarensis
#1
Katarina Medger, Nigel C Bennett, Heike Lutermann, Andre Ganswindt
Dominant females of cooperative breeding species often use aggression to suppress reproduction of subordinate females, resulting in subordinates experiencing stress-related increases in glucocorticoid levels, which may cause reproductive down-regulation. This would suggest a general pattern with higher glucocorticoid levels in subordinate compared to dominant individuals; however, the opposite was found in a number of cooperatively breeding species. Furthermore, breeding females of the cooperatively breeding Damaraland mole-rats (Fukomys damarensis) exhibit very high androgen concentrations during the wet season, presumably to support their breeding monopoly...
May 18, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29782305/tatami-mats-a-source-of-pitted-keratolysis-in-a-martial-arts-athlete
#2
Anamaria Balić, Zrinka Bukvić Mokos, Branka Marinović, Daniela Ledić Drvar
Dear Editor, Pitted keratolysis (PK), also known as keratosis plantaris sulcatum, is a non-inflammatory, bacterial, superficial cutaneous infection, characterized by many discrete superficial crateriform ''pits'' and erosions in the thickly keratinized skin of the weight-bearing regions of the soles of the feet (1). The disease often goes unnoticed by the patient, but when it is noticed it is because of the unbearable malodor and hyperhidrosis of the feet, which are socially unacceptable and cause great anxiety to many of the patients...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29782146/multiscale-interfacial-strategy-to-engineer-mixed-metal-oxide-anodes-towards-an-enhanced-cycling-efficiency
#3
Yue Ma, Cheuk-Wai Tai, Shaowen Li, Kristina Edstrom, Bingqing Wei
Interconnected macro/mesoporous structures of mixed metal oxide (MMO) are developed on nickel foam as free-standing anodes for Li-ion batteries. The sustainable production is realized via a wet chemical etching process with bio-friendly chemicals. By means of the divalent iron doping during an in-situ re-crystallization process, the as-developed MMO anodes exhibit the enhanced levels of cycling efficiency. Furthermore, this atomic-scale modification coherently synergies with the encapsulation layer across a micrometer scale...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29782019/tracking-infiltration-front-depth-using-time-lapse-multi-offset-gathers-collected-with-array-antenna-ground-penetrating-radar
#4
Hirotaka Saito, Seiichiro Kuroda, Toshiki Iwasaki, Haruyuki Fujimaki, Nobuhito Nagai, Jacopo Sala
A Ground Penetrating Radar (GPR) system based on a ground-coupled, densely populated antenna array was used to collect data during an infiltration experiment conducted at a test site near the Tottori Sand Dune, Japan. The antenna array used in this study consists of 10 transmitting antennas (Tx) and 11 receiving antennas (Rx). For this experiment, the system was configured to use all possible Tx-Rx pairings, resulting in a Multi-Offset Gather (MOG) consisting of 110 Tx-Rx combinations. The array was left stationary at a position directly above the infiltration area and data were collected every 1...
May 1, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781704/evaluating-a-smartphone-digits-in-noise-test-as-part-of-the-audiometric-test-battery
#5
Jenni-Mari Potgieter, De Wet Swanepoel, Cas Smits
 Speech-in-noise tests have become a valuable part of the audiometric test battery providing an indication of a listener's ability to function in background noise. A simple digits-in-noise (DIN) test could be valuable to support diagnostic hearing assessments, hearing aid fittings and counselling for both paediatric and adult populations. Objective: The objective of this study was to evaluate the South African English smartphone DIN test's performance as part of the audiometric test battery. Design: This descriptive study evaluated 109 adult subjects (43 male and 66 female subjects) with and without sensorineural hearing loss by comparing pure-tone air conduction thresholds, speech recognition monaural performance scores (SRS dB) and the DIN speech reception threshold (SRT)...
May 21, 2018: South African Journal of Communication Disorders. die Suid-Afrikaanse Tydskrif Vir Kommunikasieafwykings
https://www.readbyqxmd.com/read/29781617/unexpected-optical-blue-shift-in-large-colloidal-quantum-dots-by-anionic-migration-and-exchange
#6
Maria Acebron, Juan F Galisteo-López, Cefe Lopez, Facundo C Herrera, Martin D Mizrahi, Felix G Requejo, Francisco Javier Palomares, Beatriz H Juarez
Compositional changes taking place during the synthesis of alloyed CdSeZnS nanocrystals (NCs) allow shifting the optical features to higher energy as the NCs grow. Under certain synthetic conditions, the effect of those changes on the surface/interface chemistry competes with and dominates over the conventional quantum confinement effect in growing NCs. These changes, identified by means of complementary advanced spectroscopic techniques such as XPS (X-ray Photoelectron Spectroscopy) and XAS (X-ray absorption Spectroscopy), are understood in the frame of an ion migration and exchange mechanism taking place during the synthesis...
May 21, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29781610/sulfur-speciation-in-biochars-by-very-high-resolution-benchtop-k%C3%AE-x-ray-emission-spectroscopy
#7
William Holden, Gerald T Seidler, Singfoong Cheah
The analytical chemistry of sulfur-containing materials poses substantial technical challenges, especially due to the limitations of 33S NMR and the time-intensive preparations required for wet-chemistry analyses. A number of prior studies have found that synchrotron-based x-ray absorption near edge structure (XANES) measurements can give detailed speciation of sulfur chemistry in such cases. However, due to the obvious access limitations, synchrotron XANES of sulfur cannot be part of routine analytical practice across the chemical sciences community...
May 21, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29781246/determination-of-pesticide-dermal-transfer-to-operators-agricultural-workers-through-contact-with-sprayed-hard-surfaces
#8
Angelos N Tsakirakis, Konstantinos M Kasiotis, Pelagia Anastasiadou, Agathi N Charistou, Rianda Gerritsen-Ebben, C Richard Glass, Kyriaki Machera
BACKGROUND: In the present study, the dermal transfer rate of pesticides to agricultural workers occurring via contact with sprayed hard surfaces was investigated. Cotton gloves were used as dosimeters to collect residues from hard surfaces contaminated by pesticides in greenhouses. Dosimeters, either dry or moistened, were in contact with wood, metal and plastic surfaces previously sprayed. The experimental approach applied mimicked the typical hand contact. Moistened cotton gloves were used to simulate hand moisture from dew/condensation or rainfall...
May 20, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29780677/the-2016-southeastern-us-drought-an-extreme-departure-from-centennial-wetting-and-cooling
#9
A Park Williams, Benjamin I Cook, Jason E Smerdon, Daniel A Bishop, Richard Seager, Justin S Mankin
The fall 2016 drought in the southeastern United States (SE US) appeared exceptional based on its widespread impacts, but the current monitoring framework that only extends from 1979-present does not readily facilitate evaluation of soil-moisture anomalies in a centennial context. A new method to extend monthly gridded soil-moisture estimates back to 1895 is developed, indicating that since 1895, October-November 2016 soil moisture (0-200 cm) in the SE US was likely the second lowest on record, behind 1954...
October 27, 2017: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/29780668/impact-of-front-range-sources-on-reactive-nitrogen-concentrations-and-deposition-in-rocky-mountain-national-park
#10
Katherine B Benedict, Anthony J Prenni, Amy P Sullivan, Ashley R Evanoski-Cole, Emily V Fischer, Sara Callahan, Barkley C Sive, Yong Zhou, Bret A Schichtel, Jeffrey L Collett
Human influenced atmospheric reactive nitrogen (RN) is impacting ecosystems in Rocky Mountain National Park (ROMO). Due to ROMO's protected status as a Class 1 area, these changes are concerning, and improving our understanding of the contributions of different types of RN and their sources is important for reducing impacts in ROMO. In July-August 2014 the most comprehensive measurements (to date) of RN were made in ROMO during the Front Range Air Pollution and Photochemistry Éxperiment (FRAPPÉ). Measurements included peroxyacetyl nitrate (PAN), C1 -C5 alkyl nitrates, and high-time resolution NOx , NOy , and ammonia...
2018: PeerJ
https://www.readbyqxmd.com/read/29780433/influence-of-metal-deposition-and-activation-method-on-the-structure-and-performance-of-carbon-nanotube-supported-palladium-catalysts
#11
Wouter S Lamme, Jovana Zečević, Krijn P de Jong
The effects of the metal deposition and activation methods on metal particle size and distribution were investigated for carbon nanotube supported Pd catalysts. The Pd precursor was loaded by incipient wetness impregnation, ion adsorption, and deposition precipitation and was activated by thermal treatment under a nitrogen atmosphere or in the liquid phase by reduction by formaldehyde or sodium borohydride. Regardless of the metal precursor loading method, activation under a N2 atmosphere at 500 °C led to homogeneously distributed 4 nm Pd particles...
April 9, 2018: ChemCatChem
https://www.readbyqxmd.com/read/29780015/distribution-of-intestinal-parasites-detected-in-%C3%A5-anl%C3%A4-urfa-mehmet-akif-inan-education-and-research-hospital-between-october-2015-and-october-2016
#12
Koray Öncel
OBJECTIVE: A total of 7353 patients who referred to the Microbiology Laboratory of Mehmet Akif Inan Education and Research Hospital between October 2015 and October 2016 were evaluated for intestinal parasites. METHODS: All fecal samples were investigated using three methods: wet mount, formalin ethyl acetate concentration, and trichrome staining. The cellophane tape method could only be used in a limited number of patients owing to the absence of a pediatrics outpatient clinic in our hospital...
March 2018: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/29779694/the-effectiveness-of-respiratory-protection-worn-by-communities-to-protect-from-volcanic-ash-inhalation-part-i-filtration-efficiency-tests
#13
William Mueller, Claire J Horwell, Andrew Apsley, Susanne Steinle, Stephanie McPherson, John W Cherrie, Karen S Galea
During volcanic eruptions and their aftermath, communities may be concerned about the impacts of inhaling volcanic ash. Access to effective respiratory protection (RP) is therefore important for many people in volcanic areas all over the world. However, evidence to support the use of effective RP during such crises is currently lacking. The aim of this study was to build the first evidence base on the effectiveness of common materials used to protect communities from ash inhalation in volcanic crises. We obtained 17 forms of RP, covering various types of cloth through to disposable masks (typically used in occupational settings), which communities are known to wear during volcanic crises...
April 22, 2018: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29779257/linking-seed-germination-and-plant-height-a-case-study-of-a-wetland-community-on-the-eastern-tibet-plateau
#14
Kun Liu, Suzhen Cao, Guozhen Du, Jerry M Baskin, Carol C Baskin, Haiyan Bu, Wei Qi, Ting Liang
Seed germination is the earliest trait expressed in a plant's life history, and it can directly affect the expression of post germination traits. Plant height is central to plant ecological strategies, because it is a major determinant of the ability of a species to compete for light. Thus, linking seed germination and plant height at the community level is very important to understanding plant fitness and community structure. Here, we tested storage condition and temperature requirements for germination of 31 species from a wetland plant community on the eastern Tibet Plateau, and analyzed correlation of germination traits with plant height in relation to storage condition...
May 20, 2018: Plant Biology
https://www.readbyqxmd.com/read/29778966/assessment-of-human-health-risk-associated-with-methylmercury-in-the-imported-fish-marketed-in-the-caribbean
#15
Fabio Fuentes-Gandara, Claudia Herrera-Herrera, José Pinedo-Hernández, José Marrugo-Negrete, Sergi Díez
The decline in marine and freshwaters catches in recent years in Colombia has led to a change in dietary habits, with an increase in the purchase and consumption of imported fish. This is of particular concern as fish are sometimes caught in mercury-contaminated waters, and are subsequently sold canned or uncanned. In addition, canned tuna has received little attention as it is widely assumed that concentrations are low. In this study, total mercury (THg) and methylmercury (MeHg) concentrations were evaluated in three imported fish species marketed in Colombia, Prochilodus lineatus, Prochilodus reticulatus, and Pangasianodon hypophthalmus, plus four brands of canned tuna and one of sardines...
May 17, 2018: Environmental Research
https://www.readbyqxmd.com/read/29778924/cerbera-odollam-toxicity-a-review
#16
REVIEW
Ritesh G Menezes, Muhammad Shariq Usman, Syed Ather Hussain, Mohammed Madadin, Tariq Jamal Siddiqi, Huda Fatima, Pradhum Ram, Syed Bilal Pasha, S Senthilkumaran, Tooba Qadir Fatima, Sushil Allen Luis
Cerbera odollam is a plant species of the Apocynaceae family. It is often dubbed the 'suicide tree' due to its strong cardiotoxic effects, which make it a suitable means to attempt suicide. The plant grows in wet areas in South India, Madagascar, and Southeast Asia; and its common names include Pong-Pong and Othalanga. The poison rich part of the plant is the kernel which is present at the core of its fruit. The bioactive toxin in the plant is cerberin, which is a cardiac glycoside of the cardenolide class...
May 9, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29778793/impact-of-vermiculite-on-ammonia-emissions-and-organic-matter-decomposition-of-food-waste-during-composting
#17
Zaihua He, Hong Lin, Jiewei Hao, Xiangshi Kong, Kai Tian, Zhanlin Bei, Xingjun Tian
This study investigated the effects of adding vermiculite to the food waste composting process. Four treatments with varying vermiculite percent compositions, 0%, 5%, 10% and 15% (w/w, wet weight of food waste basis) mixed with initial food waste were designed and then composted for 42 days. Results show that adding vermiculite prolongs the thermophilic phase, speeds up the organic matter loss, reduces the NH3 emissions and electrical conductivity values. Compared to the control, the amount of nitrogen loss through NH3 emissions in the treatments of 5%, 10% and 15% vermiculite decreased by 9...
May 9, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29778469/communications-of-staphylococcus-aureus-and-non-aureus-staphylococcus-species-from-bovine-intramammary-infections-and-teat-apex-colonization
#18
Yasser S Mahmmod, Ilka Christine Klaas, Line Svennesen, Karl Pedersen, Hanne Ingmer
The role of non-aureus staphylococci (NAS) in the risk of acquisition of intramammary infections with Staphylococcus aureus is vague and still under debate. The objectives of this study were to (1) investigate the distribution patterns of NAS species from milk and teat skin in dairy herds with automatic milking systems, and (2) examine if the isolated NAS influences the expression of S. aureus virulence factors controlled by the accessory gene regulator (agr) quorum sensing system. In 8 herds, 14 to 20 cows with elevated somatic cell count were randomly selected for teat skin swabbing and aseptic quarter foremilk samples from right hind and left front quarters...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778446/towards-the-interaction-between-calcium-carbide-and-water-during-gas-chromatographic-determination-of-trace-moisture-in-ultra-high-purity-ammonia
#19
Maxim M Trubyanov, Georgy M Mochalov, Sergey S Suvorov, Egor S Puzanov, Anton N Petukhov, Ilya V Vorotyntsev, Vladimir M Vorotyntsev
The current study focuses on the processes involved during the flow conversion of water into acetylene in a calcium carbide reaction cell for the trace moisture analysis of ammonia by reaction gas chromatography. The factors negatively affecting the reproducibility and the accuracy of the measurements are suggested and discussed. The intramolecular reaction of the HOCaCCH intermediate was found to be a side reaction producing background acetylene during the contact of wet ammonia gas with calcium carbide. The presence of the HOCaCCH intermediate among the reaction products is confirmed by an FTIR spectral study of calcium carbide powder exposed to wet gas...
May 16, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29778227/what-are-the-main-environmental-factors-driving-the-development-of-the-neurotoxic-dinoflagellate-vulcanodinium-rugosum-in-a-mediterranean-ecosystem-ingril-lagoon-france
#20
Eric Abadie, Claude Chiantella, Anaïs Crottier, Lesley Rhodes, Estelle Masseret, Tom Berteaux, Mohamed Laabir
Vulcanodinium rugosum, a dinoflagellate developing in Ingril Lagoon (Mediterranean, France) is responsible for shellfish intoxications due to the neurotoxin pinnatoxin G. A one year survey (March 2012-April 2013) was conducted in this oligotrophic shallow lagoon and key environmental parameters were recorded (temperature, salinity and nutrients). The spatio-temporal distribution of V. rugosum in water column and on macrophytes was also determined. Planktonic cells of V. rugosum were observed at all sampling stations, but in relatively low concentrations (maximum of 1000 cell/L)...
May 2018: Harmful Algae
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