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https://www.readbyqxmd.com/read/28821797/detecting-hybridization-between-sister-species-of-terebratulina-brachiopoda-cancellothyridoidea-in-the-north-atlantic-morphology-versus-molecules
#1
Carsten Lüter, Nina A Ebeling, Martin Aberhan
Investigating samples of the cancellothyridid brachiopod Terebratulina collected during the IceAGE (Me85/3) expedition of RV METEOR at the continental shelf around Iceland with both morphometrical and molecular methods, we were for the first time able to detect a hybridization event between brachiopod sister species, which are thought to have separated 60 MYA. Terebratulina retusa and T. septentrionalis can clearly be distinguished on the basis of consistent species-specific molecular signatures in both mitochondrial and nuclear markers, whereas morphometrical analyses proved to be less reliable for species determination than previously thought...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814716/lithium-enrichment-in-intracontinental-rhyolite-magmas-leads-to-li-deposits-in-caldera-basins
#2
Thomas R Benson, Matthew A Coble, James J Rytuba, Gail A Mahood
The omnipresence of lithium-ion batteries in mobile electronics, and hybrid and electric vehicles necessitates discovery of new lithium resources to meet rising demand and to diversify the global lithium supply chain. Here we demonstrate that lake sediments preserved within intracontinental rhyolitic calderas formed on eruption and weathering of lithium-enriched magmas have the potential to host large lithium clay deposits. We compare lithium concentrations of magmas formed in a variety of tectonic settings using in situ trace-element measurements of quartz-hosted melt inclusions to demonstrate that moderate to extreme lithium enrichment occurs in magmas that incorporate felsic continental crust...
August 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28730358/hydrogeochemical-characterization-and-groundwater-quality-assessment-in-intruded-coastal-brine-aquifers-laizhou-bay-china
#3
Xiaoying Zhang, Jinjie Miao, Bill X Hu, Hongwei Liu, Hanxiong Zhang, Zhen Ma
The aquifer in the coastal area of the Laizhou Bay is affected by salinization processes related to intense groundwater exploitation for brine resource and for agriculture irrigation during the last three decades. As a result, the dynamic balances among freshwater, brine, and seawater have been disturbed and the quality of groundwater has deteriorated. To fully understand the groundwater chemical distribution and evolution in the regional aquifers, hydrogeochemical and isotopic studies have been conducted based on the water samples from 102 observation wells...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28715910/isotopic-fingerprints-of-the-lake-%C3%A5-abi%C3%A5-skie-ne-poland-hydrological-system-on-contemporary-carbonates-precipitated-in-the-lake
#4
Alicja Ustrzycka, Natalia Piotrowska, Alicja Bonk, Janusz Filipiak, Wojciech Tylmann
An isotopic monitoring was undertaken in 2012-2014 at Lake Żabińskie (Mazurian Lakeland, NE Poland). The aim was to identify the factors and processes controlling an isotopic composition of the lake water and to explore the mechanism responsible for recording the climatic signal in stable isotope composition of deposited carbonates. δ(18)O and δ(2)H in the precipitation, lake water column, inflows and outflow, δ(18)O and δ(13)C in the carbonate fraction of sediments trapped in the water column were recorded with monthly resolution...
July 17, 2017: Isotopes in Environmental and Health Studies
https://www.readbyqxmd.com/read/28709093/evolutionary-process-of-saline-water-intrusion-in-holocene-and-late-pleistocene-groundwater-in-southern-laizhou-bay
#5
Sen Liu, Zhonghua Tang, Maosheng Gao, Guohua Hou
Saline water intrusion is one of the most serious groundwater problems in southern Laizhou Bay. In this study, formation of groundwater with different qualities and saline water intrusion were analyzed using hydrochemical and stable isotopic methods, and the Hydrochemical Facies Evolution Diagram (HFE-Diagram). The results demonstrate that the structure of the sedimentary layer in this area is the dominant controlling factor of groundwater distribution. From the south (land) to the north (sea), the hydrochemical distribution presents a regular changing pattern following the order: HCO3-Na·Mg and HCO3·Cl-Mg·Ca (fresh water), HCO3·Cl-Na·Mg (brackish water), Cl-Na·Mg (saline water), Cl-Na (saline water) and Cl·HCO3-Na (brackish water)...
July 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28702708/microbial-composition-and-diversity-patterns-in-deep-hyperthermal-aquifers-from-the-western-plain-of-romania
#6
Cecilia M Chiriac, Andreea Baricz, Edina Szekeres, Knut Rudi, Nicolae Dragoș, Cristian Coman
A limited number of studies have investigated the biodiversity in deep continental hyperthermal aquifers and its influencing factors. Here, we present the first description of microbial communities inhabiting the Pannonian and Triassic hyperthermal aquifers from the Western Plain of Romania, the first one being considered a deposit of "fossilized waters," while the latter is embedded in the hydrological cycle due to natural refilling. The 11 investigated drillings have an open interval between 952 and 3432 m below the surface, with collected water temperatures ranging between 47 and 104 °C, these being the first microbial communities characterized in deep continental water deposits with outflow temperatures exceeding 80 °C...
July 13, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28697268/the-cost-of-hospital-admission-brief-resolved-unexplained-events
#7
Justin Triemstra
The modern health care system continues to expand at a meteoric rate with ever-increasing technological advancements. However, with these advancements come unsustainably rising costs and occasionally unintended, avoidable harm. In this article, we use a brief resolved unexplained event (BRUE) to illustrate how recent guidelines can help physicians practice value in this modern health care system. A BRUE is a common pediatric problem that is seen in ambulatory and emergency department settings. Infants presenting with a BRUE can be separated into low- and high-risk groups per recent guidelines...
July 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28692884/effects-of-hydrated-lime-on-radionuclides-stabilization-of-hanford-tank-residual-waste
#8
Guohui Wang, Wooyong Um, Kirk J Cantrell, Michelle M V Snyder, Mark E Bowden, Mark B Triplett, Edgar C Buck
Chemical stabilization of tank residual waste is part of a Hanford Site tank closure strategy to reduce overall risk levels to human health and the environment. In this study, a set of column leaching experiments using tank C-104 residual waste were conducted to evaluate the leachability of uranium (U) and technetium (Tc) where grout and hydrated lime were applied as chemical stabilizing agents. The experiments were designed to simulate future scenarios where meteoric water infiltrates through the vadose zones into the interior of the tank filled with layers of grout or hydrated lime, and then contacts the residual waste...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28691511/defining-a-stable-water-isotope-framework-for-isotope-hydrology-application-in-a-large-trans-boundary-watershed-russian-federation-ukraine
#9
Yuliya Vystavna, Dmytro Diadin, Frédéric Huneau
Stable isotopes of hydrogen ((2)H) and oxygen ((18)O) of the water molecule were used to assess the relationship between precipitation, surface water and groundwater in a large Russia/Ukraine trans-boundary river basin. Precipitation was sampled from November 2013 to February 2015, and surface water and groundwater were sampled during high and low flow in 2014. A local meteoric water line was defined for the Ukrainian part of the basin. The isotopic seasonality in precipitation was evident with depletion in heavy isotopes in November-March and an enrichment in April-October, indicating continental and temperature effects...
July 10, 2017: Isotopes in Environmental and Health Studies
https://www.readbyqxmd.com/read/28640462/hybrid-lead-halide-perovskites-for-ultrasensitive-photoactive-switching-in-terahertz-metamaterial-devices
#10
Manukumara Manjappa, Yogesh Kumar Srivastava, Ankur Solanki, Abhishek Kumar, Tze Chien Sum, Ranjan Singh
The recent meteoric rise in the field of photovoltaics with the discovery of highly efficient solar-cell devices is inspired by solution-processed organic-inorganic lead halide perovskites that exhibit unprecedented light-to-electricity conversion efficiencies. The stunning performance of perovskites is attributed to their strong photoresponsive properties that are thoroughly utilized in designing excellent perovskite solar cells, light-emitting diodes, infrared lasers, and ultrafast photodetectors. However, optoelectronic application of halide perovskites in realizing highly efficient subwavelength photonic devices has remained a challenge...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28633552/cabozantinib-for-the-treatment-of-kidney-cancer
#11
REVIEW
Ahmed Abdelaziz, Ulka Vaishampayan
Cabozantinib is a small molecule tyrosine kinase inhibitor that initially showed activity in medullary thyroid cancer and was recently approved by the Food and Drug Administration for the treatment of metastatic renal cell carcinoma after progression on first line therapy. Areas covered: In the METEOR trial, cabozantinib demonstrated significantly improved efficacy in all three endpoints; response rates, progression free survival and overall survival in a randomized trial with everolimus as an active comparator...
July 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28631760/-astronauts-asteroids-and-the-universe-of-antithrombotic-therapies-in-primary-percutaneous-coronary-intervention
#12
Leonardo De Luca, Antonino Granatelli
A sensation of self-awareness on the relativity of our certainties comes over looking to the huge amount of data on antithrombotic therapies assessed in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (pPCI). This sensation can be compared to the so-called "overview effect", a cognitive shift in awareness reported by some astronauts during spaceflight, often while viewing the Earth from orbit. In this review we will mention drugs floated like meteors in the Universe of STEMI treatment and we will discuss the body of evidence on oral and intravenous antithrombotic therapies for patients undergoing pPCI...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28601084/can-psychobiotics-intake-modulate-psychological-profile-and-body-composition-of-women-affected-by-normal-weight-obese-syndrome-and-obesity-a-double-blind-randomized-clinical-trial
#13
Antonino De Lorenzo, Micaela Costacurta, Giuseppe Merra, Paola Gualtieri, Giorgia Cioccoloni, Massimiliano Marchetti, Dimitrios Varvaras, Raffaella Docimo, Laura Di Renzo
BACKGROUND: Evidence of probiotics effects on gut function, brain activity and emotional behaviour were provided. Probiotics can have dramatic effects on behaviour through the microbiome-gut-brain axis, through vagus nerve. We investigated whether chronic probiotic intake could modulate psychological state, eating behaviour and body composition of normal weight obese (NWO) and preobese-obese (PreOB/OB) compared to normal weight lean women (NWL). METHODS: 60 women were enrolled...
June 10, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28570881/magnetic-resonance-cholangiopancreatography-uncovering-massive-gallbladder-mucocele-in-a-patient-with-ambiguous-clinical-and-laboratory-findings-a-case-report
#14
Queennie Reyes, Ruth Louise McLeod, Katrina Fernandes, Vijayragavan Muralidharan, Laurence Weinberg
INTRODUCTION: Radiological imaging of the gallbladder is a fundamental aspect of assessing severity of acute cholecystitis in addition to guiding the optimal timing of surgical intervention. We present a case of acute severe cholecystitis with massive gallbladder mucocele initially presenting with equivocal and inconclusive clinical, laboratory, and ultrasound findings. Magnetic resonance cholangiopancreatography allowed accurate evaluation of cholelithiasis and demonstrated a massive gallbladder mucocele...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28561912/crystallization-kinetics-and-morphology-control-of-formamidinium-cesium-mixed-cation-lead-mixed-halide-perovskite-via-tunability-of-the-colloidal-precursor-solution
#15
David P McMeekin, Zhiping Wang, Waqaas Rehman, Federico Pulvirenti, Jay B Patel, Nakita K Noel, Michael B Johnston, Seth R Marder, Laura M Herz, Henry J Snaith
The meteoric rise of the field of perovskite solar cells has been fueled by the ease with which a wide range of high-quality materials can be fabricated via simple solution processing methods. However, to date, little effort has been devoted to understanding the precursor solutions, and the role of additives such as hydrohalic acids upon film crystallization and final optoelectronic quality. Here, a direct link between the colloids concentration present in the [HC(NH2 )2 ]0.83 Cs0.17 Pb(Br0.2 I0.8 )3 precursor solution and the nucleation and growth stages of the thin film formation is established...
May 31, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28537656/supplementation-with-a-lecithin-based-delivery-form-of-boswellia-serrata-extract-casperome%C3%A2-controls-symptoms-of-mild-irritable-bowel-syndrome
#16
G Belcaro, G Gizzi, L Pellegrini, M Corsi, M Dugall, M Cacchio, B Feragalli, S Togni, A Riva, R Eggenhoffner, L Giacomelli
OBJECTIVE: Irritable Bowel Syndrome (IBS) is a chronic, gastrointestinal disorder in which abdominal pain or discomfort is associated with defecation or changes in bowel habits. Its multifactorial pathophysiology leads to a variety of available treatments, mainly aimed at controlling symptoms. The management of IBS patients could be optimized by individualized strategies, including non-pharmaceutical approaches. In this study, we evaluated the efficacy and safety of a novel delivery form of Boswellia serrata extracts (BSE) (Casperome®) in patients with IBS...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28494340/simple-and-rapid-quantification-of-vancomycin-in-serum-urine-and-peritoneal-pleural-effusion-via-uhplc-ms-ms-applicable-to-personalized-antibiotic-dosing-research
#17
Lenka Javorska, Lenka Kujovska Krcmova, Petr Solich, Milan Kaska
Management of the therapy of life-threatening bacterial infection is extremely based on an optimal antibiotic treatment. Achieving the correct vancomycin dosage in blood and target tissues can be complicated in special situations, e.g., where large fluid sequestration and/or acute renal failure occur. A UHPLC-MS/MS method operating in electrospray (ESI) positive ion mode was applied for the determination of vancomycin in serum, urine and peritoneal/pleural effusion. Sample pretreatment was composed of dilution and simple protein precipitation where only a small volume (50μL) of serum, urine or peritoneal/pleural effusion was required...
August 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28385072/spatial-and-temporal-variation-in-the-stable-isotope-composition-%C3%AE-18-o-and-%C3%AE-2-h-of-rain-across-the-tropical-island-of-sri-lanka
#18
E A N V Edirisinghe, H M T G A Pitawala, H A Dharmagunawardhane, R L Wijayawardane
Seasonal and spatial variation in δ(18)O and δ(2)H in rainwater was determined in three selected transects across Sri Lanka, the tropical island in the Indian Ocean. Local meteoric water lines (LMWLs) for three distinguished climatic zones; wet, dry and intermediate were constructed. LMWLs show slight variations in their gradients and respective d-excess values, depending on the air moisture origin, circulation and environmental conditions of each climatic zone. The elevation effect and amount effect could be identified but the continental effect is not significantly seen in the isotope composition of rain in the concerned areas...
April 6, 2017: Isotopes in Environmental and Health Studies
https://www.readbyqxmd.com/read/28375517/life-after-usa300-the-rise-and-fall-of-a-superbug
#19
REVIEW
Paul J Planet
The community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) epidemic in the United States is largely attributable to the meteoric rise of a single clone, referred to as USA300. This strain not only spread across the United States in just a few years to become the predominant cause of staphylococcal disease, but it also appears to have increased the overall number of skin and soft-tissue infections (SSTIs), increasing the overall disease burden. While USA300 still constitutes a major public health burden, its prevalence may be decreasing in some parts of the United States...
February 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28375492/the-employed-neurosurgeon-essential-lessons
#20
Deborah L Benzil, Edie E Zusman
Neurosurgeons are highly specialized surgeons whose pride is mastery of the complexity of form and function that is the nervous system and then knowing when and how these require surgical intervention. Following years of arduous postgraduate education, neurosurgeons enter the world of practice that is not only daunting in its intricacies of regulations, mandates, and unknown business practices, but also changing at a meteoric pace. Overwhelmingly, graduating residents and fellows are choosing to practice as employed physicians, a trend that is new in its magnitude and also changed because of the rapid evolution of large health systems...
April 1, 2017: Neurosurgery
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