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https://www.readbyqxmd.com/read/28734301/communication-influence-of-external-static-and-alternating-electric-fields-on-water-from-long-time-non-equilibrium-ab-initio-molecular-dynamics
#1
Zdenek Futera, Niall J English
The response of water to externally applied electric fields is of central relevance in the modern world, where many extraneous electric fields are ubiquitous. Historically, the application of external fields in non-equilibrium molecular dynamics has been restricted, by and large, to relatively inexpensive, more or less sophisticated, empirical models. Here, we report long-time non-equilibrium ab initio molecular dynamics in both static and oscillating (time-dependent) external electric fields, therefore opening up a new vista in rigorous studies of electric-field effects on dynamical systems with the full arsenal of electronic-structure methods...
July 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28730887/a-systematic-review-and-meta-analysis-of-pneumonia-associated-with-thin-liquid-vs-thickened-liquid-intake-in-patients-who-aspirate
#2
Asako Kaneoka, Jessica M Pisegna, Hiroki Saito, Melody Lo, Katey Felling, Nobuhiko Haga, Michael P LaValley, Susan E Langmore
OBJECTIVE: To investigate whether drinking thin liquids with safety strategies increases the risk for pneumonia as compared with thickened liquids in patients who have demonstrated aspiration of thin liquids. DATA SOURCES: Seven electronic databases, one clinical register, and three conference archives were searched. No language or publication date restrictions were imposed. Reference lists were scanned and authors and experts in the field were contacted. REVIEW METHODS: A blind review was performed by two reviewers for published or unpublished randomized controlled trials and prospective non-randomized trials comparing the incidence of pneumonia with intake of thin liquids plus safety strategies vs...
August 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28729970/severe-cyclophosphamide-related-hyponatremia-in-a-patient-with-acute-glomerulonephritis
#3
Pasquale Esposito, Maria Valentina Domenech, Nicoletta Serpieri, Marta Calatroni, Ilaria Massa, Alessandro Avella, Edoardo La Porta, Luca Estienne, Elena Caramella, Teresa Rampino
Cyclophosphamide is frequently used to treat cancer, autoimmune and renal diseases, such as rapidly progressive glomerulonephritis. Its side effects are well-known, including bone marrow depression, infections, alopecia, sterility, bladder malignancy and hemorrhagic cystitis. Moreover, in some cases cyclophosphamide use has been related to the onset of hyponatremia, by development of a syndrome of inappropriate antidiuresis. Indeed, severe hyponatremia has been previously reported in patients treated with high-dose or moderate-dose of intravenous cyclophosphamide, while only few cases have been reported in patients treated with low dose...
July 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28721563/terrestrial-adaptation-of-green-algae-klebsormidium-and-zygnema-charophyta-involves-diversity-in-photosynthetic-traits-but-not-in-co2-acquisition
#4
Mattia Pierangelini, David Ryšánek, Ingeborg Lang, Wolfram Adlassnig, Andreas Holzinger
The basal streptophyte Klebsormidium and the advanced Zygnema show adaptation to terrestrialization. Differences are found in photoprotection and resistance to short-term light changes, but not in CO 2 acquisition. Streptophyte green algae colonized land about 450-500 million years ago giving origin to terrestrial plants. We aim to understand how their physiological adaptations are linked to the ecological conditions (light, water and CO2) characterizing modern terrestrial habitats. A new Klebsormidium isolate from a strongly acidic environment of a former copper mine (Schwarzwand, Austria) is investigated, in comparison to Klebsormidium cf...
July 18, 2017: Planta
https://www.readbyqxmd.com/read/28720249/using-wheel-availability-to-shape-running-behavior-of-the-rat-towards-improved-behavioral-and-neurobiological-outcomes
#5
Julia C Basso, Joan I Morrell
BACKGROUND: Though voluntary wheel running (VWR) has been used extensively to induce changes in both behavior and biology, little attention has been given to the way in which different variables influence VWR. This lack of understanding has led to an inability to utilize this behavior to its full potential, possibly blunting its effects on the endpoints of interest. NEW METHOD: We tested how running experience, sex, gonadal hormones, and wheel apparatus influence VWR in a range of wheel access "doses"...
July 15, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28717255/sequential-stable-isotope-analysis-reveals-differences-in-multi-year-dietary-history-of-three-sympatric-equid-species-in-sw-mongolia
#6
Martina Burnik Šturm, Oyunsaikhan Ganbaatar, Christian C Voigt, Petra Kaczensky
1. Competition among sympatric wild herbivores is reduced by different physiological, morphological, and behavioral traits resulting in different dietary niches. Wild equids are a rather uniform group of large herbivores which have dramatically declined in numbers and range. Correlative evidence suggests that pasture competition with livestock is one of the key factors for this decline, and the situation may be aggravated in areas where different equid species overlap. 2. The Dzungarian Gobi is currently the only place where two wild equid species coexist and share the range with the domesticated form of a third equid species...
August 2017: Journal of Applied Ecology
https://www.readbyqxmd.com/read/28717147/information-processing-in-patterned-magnetic-nanostructures-with-edge-spin-waves
#7
Antonio Lara, Javier Robledo Moreno, Konstantin Y Guslienko, Farkhad G Aliev
Low dissipation data processing with spins is one of the promising directions for future information and communication technologies. Despite a significant progress, the available magnonic devices are not broadband yet and have restricted capabilities to redirect spin waves. Here we propose a breakthrough approach to spin wave manipulation in patterned magnetic nanostructures with unmatched characteristics, which exploits a spin wave analogue to edge waves propagating along a water-wall boundary. Using theory, micromagnetic simulations and experiment we investigate spin waves propagating along the edges in magnetic structures, under an in-plane DC magnetic field inclined with respect to the edge...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715687/highly-selective-and-sensitive-fluorogenic-ferric-probes-based-on-aggregation-enhanced-emission-with-sime3-substituted-polybenzene
#8
Xuefeng Wang, Hua Wang, Qin Jiang, Yong-Ill Lee, Shengyu Feng, Hong-Guo Liu
In this study, thiophene was linked to polybenzene to generate novel fluorescent probes, namely 3,4-diphenyl-2,5-di(2-thienyl)phenyl-trimethylsilane (DPTB-TMS) with a -SiMe3 substituent and 3,4-diphenyl-2,5-di(2-thienyl)phenyl (DPTB) without the -SiMe3 substituent, respectively. Both of the two compounds exhibit aggregation-enhanced emission (AEE) properties in tetrahydrofuran/water mixtures due to restricted intramolecular rotation of the peripheral groups, which make the two compounds good candidates for the detection of Fe(3+) ions in aqueous-based solutions...
July 13, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28715436/use-of-water-turnover-method-to-measure-mother-s-milk-flow-in-a-rat-model-application-to-dams-receiving-a-low-protein-diet-during-gestation-and-lactation
#9
Thomas Sevrin, Marie-Cécile Alexandre-Gouabau, Dominique Darmaun, Antoine Palvadeau, Agnès André, Patrick Nguyen, Khadija Ouguerram, Clair-Yves Boquien
Assessment of milk production is of utmost relevance for pediatricians and scientists interested in early life nutrition. The weight-suckle-weight (WSW) method, which consists of weighing babies before and after they suckle their mother, uses the difference in body weight as an estimate of milk intake. However, this is prone to many sources of error. In the current study, we used for the first time the water turnover method and compartmental analysis with deuterated water (D2O) as a non-toxic tracer to quantify in vivo milk production in a rat model...
2017: PloS One
https://www.readbyqxmd.com/read/28710211/occupational-risk-for-legionella-infection-among-dental-healthcare-workers-meta-analysis-in-occupational-epidemiology
#10
Stefano Petti, Matteo Vitali
OBJECTIVE: The occupational risk for Legionella infection among dental healthcare workers (DHCWs) is conjectured because of the risk of routine inhalation of potentially contaminated aerosols produced by the dental instruments. Nevertheless, occupational epidemiology studies are contrasting. This meta-analysis assessed the level of scientific evidence regarding the relative occupational risk for Legionella infection among DHCWs. METHODS: Literature search was performed without time and language restrictions, using broad data banks (PubMed, Scopus, Web of Science, GOOGLE Scholar) and generic keywords ('legionella' AND 'dent*')...
July 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28709144/the-spectrum-of-peri-ictal-mri-changes-four-illustrative-cases
#11
Jennifer Williams, Gerard Mullins, Norman Delanty, Bede Peter, Colin P Doherty
PURPOSE: Seizure induced neuronal hyperexcitability and increased unmet metabolic neuronal demand results in failure of the sodium/potassium ATP pump. Sodium and water accumulates intracellularly with cellular swelling and reduced extracellular volume demonstrating hyperintensity on DWI and reduced ADC. The aim of this study was to describe 4 clinical cases where we identified abnormalities in diffusion restriction in the acute peri-ictal period and followed them longitudinally. METHODS: Patients were recruited from the emergency department, clinical consultation service and epilepsy monitoring unit of two tertiary referral centres...
July 6, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28704673/contributions-of-combined-sewer-overflows-and-treated-effluents-to-the-bacterial-load-released-into-a-coastal-area
#12
M Al Aukidy, P Verlicchi
The impact of combined sewer overflow (CSO) on the receiving water body is an issue of increasing concern, as it may lead to restrictions in the use and destination of the receiving body, such as bathing or recreational area closures, fish and shellfish consumption restrictions, and contamination of drinking water resources. Recent investigations have mainly referred to the occurrence and loads of suspended solids, organic compounds and, in some cases, micropollutants. Attempts have been made to find correlations between the discharged load and the size and characteristics of the catchment area, climate conditions, rainfall duration and intensity...
July 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28704433/forecasting-distributions-of-an-aquatic-invasive-species-nitellopsis-obtusa-under-future-climate-scenarios
#13
Daniel Romero-Alvarez, Luis E Escobar, Sara Varela, Daniel J Larkin, Nicholas B D Phelps
Starry stonewort (Nitellopsis obtusa) is an alga that has emerged as an aquatic invasive species of concern in the United States. Where established, starry stonewort can interfere with recreational uses of water bodies and potentially have ecological impacts. Incipient invasion of starry stonewort in Minnesota provides an opportunity to predict future expansion in order to target early detection and strategic management. We used ecological niche models to identify suitable areas for starry stonewort in Minnesota based on global occurrence records and present-day and future climate conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28701670/impact-of-compound-hypertonic-saline-solution-on-decompensated-heart-failure
#14
Yanfang Wan, Lei Li, Heping Niu, Xiaoli Ma, Jing Yang, Chen Yuan, Guichen Mu, Jun Zhang
The aim of the present study was to evaluate the effects of hypertonic saline solution (C-HSS) with high dose furosemide on hospitalization time, readmission, and mortality in patients with New York Heart Association (NYHA) class III heart failure.Decompensated heart failure patients (NYHA III) with chronic ischemic or nonischemic cardiomyopathy and ejection fraction < 40% were divided into 2 groups in an open-label random manner: the first group received a 1-hour intravenous infusion of furosemide (100 mg) plus compound C-HSS (100 mL) twice daily and underwent serious water restriction (500 mL/day); the second group received furosemide intravenous bolus (100 mg) twice a day and water restriction (500 mL/day), without C-HSS...
July 13, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28696383/alfalfa-responses-to-gypsum-application-measured-using-undisturbed-soil-columns
#15
Rebecca Tirado-Corbalá, Brian K Slater, Warren A Dick, Dave Barker
Gypsum is an excellent source of Ca and S, both of which are required for crop growth. Large amounts of by-product gypsum [Flue gas desulfurization gypsum-(FGDG)] are produced from coal combustion in the United States, but only 4% is used for agricultural purposes. The objective of this study was to evaluate the effects of (1) untreated, (2) short-term (4-year annual applications of gypsum totaling 6720 kg ha(-1)), and (3) long-term (12-year annual applications of gypsum totaling 20,200 kg ha(-1)) on alfalfa (Medicago sativa L...
July 11, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28692652/developmental-transcriptomic-analyses-for-mechanistic-insights-into-critical-pathways-involved-in-embryogenesis-of-pelagic-mahi-mahi-coryphaena-hippurus
#16
Elvis Genbo Xu, Edward M Mager, Martin Grosell, John D Stieglitz, E Starr Hazard, Gary Hardiman, Daniel Schlenk
Mahi-mahi (Coryphaena hippurus) is a commercially and ecologically important species of fish occurring in tropical and temperate waters worldwide. Understanding early life events is crucial for predicting effects of environmental stress, which is largely restricted by a lack of genetic resources regarding expression of early developmental genes and regulation of pathways. The need for anchoring developmental stages to transcriptional activities is highlighted by increasing evidence on the impacts of recurrent worldwide oil spills in this sensitive species during early development...
2017: PloS One
https://www.readbyqxmd.com/read/28689715/exploration-of-low-temperature-microrna-function-in-an-anoxia-tolerant-vertebrate-ectotherm-the-red-eared-slider-turtle-trachemys-scripta-elegans
#17
Kyle K Biggar, Kenneth B Storey
As a model for vertebrate long-term survival in oxygen-restricted environments, the red-eared slider turtle (Trachemys scripta elegans) can adapt at the biochemical level to survive in oxygen-free (anoxic) cold water (<10°C). This impressive ability is enabled through a coordinated suppression of energy-expensive, non-essential, cell processes. This study explored the anoxia-responsive expression of several microRNA species (miR-1a, -133, -17, -107, -148a, -21, -103, -210, -20a, -365 and -29b) in adult turtles exposed to 5h and 20h anoxia (at 5±1°C)...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28682868/mineralocorticoid-responsive-hyponatremia-of-the-elderly-a-systematic-review
#18
REVIEW
Kohta Katayama, Yasuharu Tokuda
BACKGROUND: Mineralocorticoid responsive hyponatremia of the elderly (MRHE) is an emerging concept of hyponatremia in aged people. Diagnosis of MRHE requires exclusion of syndrome of inappropriate antidiuresis and adrenal dysfunction. Thus we aimed to evaluate the characteristics of all patients with suspected MRHE available for a review. METHODS: We conducted a systematic review using MEDLINE and Google scholar. We included published case reports of adult patients diagnosed as MRHE, written by English and Japanese language...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28681304/roots-alterations-in-presence-of-phenanthrene-may-limit-co-remediation-implementation-with-noccaea-caerulescens
#19
Ivan Zelko, Stéphanie Ouvrard, Catherine Sirguey
Co-phytoremediation of both trace elements and polycyclic aromatic hydrocarbons (PAH) is an emerging technique to treat multi-contaminated soils. In this study, root morphological and structural features of the heavy metal hyperaccumulator Noccaea caerulescens, exposed to a model PAH phenanthrene (PHE) in combination with cadmium (Cd), were observed. In vitro cultivated seedlings were exposed to 2 mM of PHE and/or 5 μM of Cd for 1 week. Co-phytoremediation effectiveness appeared restricted because of a serious inhibition (about 40%) of root and shoot biomass production in presence of PHE, while Cd had no significant adverse effect on these parameters...
July 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28679792/hydrodynamic-sensory-threshold-in-harbour-seals-phoca-vitulina-for-artificial-flatfish-breathing-currents
#20
Benedikt Niesterok, Guido Dehnhardt, Wolf Hanke
Harbour seals have the ability to detect benthic fish such as flatfish using the water currents these fish emit through their gills (breathing currents). We investigated the sensory threshold in harbour seals for this specific hydrodynamic stimulus under conditions which are realistic for seals hunting in the wild. We used an experimental platform where an artificial breathing current was emitted through one of eight different nozzles. Two seals were trained to search for the active nozzle. Each experimental session consisted of eight test trials of a particular stimulus intensity and 16 supra-threshold trials of high stimulus intensity...
July 1, 2017: Journal of Experimental Biology
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