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Amar S Katkar, Shobhnath P Gupta, Md Motin Seikh, Lih-Juann Chen, Pravin S Walke
The Cr doped tunable thickness core-shell Ge/GeOx nanowires were synthesized and characterized using X-ray diffraction, FESEM, TEM, EDS, XPS and magnetization studies. The shell thickness increases with the increase in synthesis temperature. The presence of metallic Cr and Cr3+ in core-shell structure was confirmed from XPS study. The magnetic property is highly sensitive to the core-shell thickness and intriguing room temperature ferromagnetism is realized only in core-shell nanowires. The magnetization decreases with increase in shell thickness and practically ceases to exist when there is no core...
March 19, 2018: Nanotechnology
Filiz Mine Çizmecioğlu, Jeremy Huw Jones, Wendy Forsyth Paterson, Sakina Kherra, Mariam Kourime, Ruth McGowan, M Guftar Shaikh, Malcolm Donaldson
OBJECTIVE: Early diagnosis is of proven benefit in Prader-Willi syndrome (PWS). We therefore examined key perinatal features to aid early recognition. METHODS: Data were collected from case records of subjects attending a multi-disciplinary clinic and from a retrospective birth questionnaire. RESULTS: Ninety patients (54 male: 36 female) were seen between 1991-2015, most with paternal deletion (n=56) or maternal isodisomy (n=26). Features included cryptorchidism in 94% males, preterm birth (26%), birthweight <2500g (24%), polyhydramnios (23%), breech presentation (23%) and need for nasogastric feeding (83%)...
March 19, 2018: Journal of Clinical Research in Pediatric Endocrinology
Roman M Lazarenko, Claire E DelBove, Qi Zhang
Release and recycling of synaptic vesicles are essential for neurotransmission and synaptic plasticity. To gain mechanistic understanding of these processes, direct measurements of vesicle release and retrieval is indispensable. Styryl dyes like FM1-43 and FM4-64 have been widely used for this purpose and their loading and unloading are reliable measurements for synaptic vesicle release and retrieval in cultured neurons. This protocol describes in detail the procedure of using styryl dyes to label and measure synaptic vesicle uptake and release in cultured rat hippocampal neurons...
January 20, 2018: Bio-protocol
Kimberly Joseph, Sameer Gupta, James Yon, Renee Partida, Lee Cartagena, John Kubasiak, Vanessa Buie, Jared Miller, Dorion Wiley, Kimberly Nagy, Frederic Starr, Andrew Dennis, Matthew Kaminsky, Faran Bokhari
BACKGROUND: Checklists have been advocated to improve quality outcomes/communication in the critical care setting, but results have been mixed. A new checklist process, "TRAUMA LIFE", was implemented in our Trauma Intensive Care Unit (TICU) to replace prior checklists. The purpose of this study was to evaluate the impact of the "TRAUMA LIFE" process implementation on quality metrics and on patient/family communication in the TICU. METHODS: "TRAUMA LIFE" was considered maturely implemented by 2016...
March 9, 2018: American Journal of Surgery
Mariosimone Zoccali, Simone Cappello, Luigi Mondello
The present research is focused on the use of a triple quadrupole mass spectrometer (QqQ MS) coupled with flow modulated comprehensive two-dimensional gas chromatography (FM GC × GC) for a multilevel elucidation of biodegradation potentiality of natural marine microbial populations during a bioremediation (biostimulation) treatment. The crude oil used for the evaluation of the bioremediation process, namely Dansk Blend Pier E1, represents a very complex sample. Hence, in order to understand the metabolic activity of microbial populations during the bioremediation process, a GC × GC system was used...
March 12, 2018: Journal of Chromatography. A
Kamilla A Mukhutdinova, Marat R Kasimov, Arthur R Giniatullin, Guzel F Zakyrjanova, Alexey M Petrov
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by the initial denervation of skeletal muscle and subsequent death of motor neurons. A dying-back pattern of ALS suggests a crucial role for neuromuscular junction dysfunction. In the present study, microelectrode recording of postsynaptic currents and optical detection of synaptic vesicle traffic (FM1-43 dye) and intracellular NO levels (DAF-FM DA) were used to examine the effect of the major brain-derived cholesterol metabolite 24S-hydroxycholesterol (24S-HC, 0...
March 14, 2018: Molecular and Cellular Neurosciences
Luzia Jaeger Hintze, Virginie Messier, Marie-Ève Lavoie, Martin Brochu, Jean-Marc Lavoie, Denis Prud'homme, Rémi Rabasa-Lhoret, Éric Doucet
Resistance training (RT) has been shown to decrease fat mass (FM), and increase fat-free mass (FFM), which can be a useful for weight loss maintenance. OBJECTIVE: To examine the effects of a 1-year RT intervention on weight loss maintenance following a 6-month dietary weight loss intervention. DESIGN: Following a 6-month dietary weight loss intervention (-6% ± 5.8; 5.05 kg ± 4.45), 70 postmenopausal women living with overweight or obesity were randomized to a control group (n = 34) or a RT group (n = 36) (3×/week first 6 months, 2×/week last 6 months, 70-80% of 1-repetition maximum)...
March 13, 2018: Physiology & Behavior
Huihuang H Ding, Keying Qian, H Douglas Goff, Qi Wang, Steve W Cui
The structure of neutral fraction gum from flaxseed mucilage (FM-NFG) was studied for better understanding of the relationship between primary structure and conformation. Based on methylation/GC-MS, nuclear magnetic resonance (NMR) spectroscopy, the structure of FM-NFG was proposed as arabinoxylans. Flaxseed mucilage arabinoxylans contained β-1,4-linked xylose backbones, which were mainly substituted at O-2 and/or O-3 positions by 1-3 sugar residues. The possible branches included → 5)-α-l-Araf-(1 → (17...
July 15, 2018: Food Chemistry
James Rourke, Shabnam Asghari, Oliver Hurley, Mohamed Ravalia, Michael Jong, Wendy Graham, Wanda Parsons, Norah Duggan, Danielle O'Keefe, Scott Moffatt, Katherine Stringer, Carolyn Sturge Sparkes, Janelle Hippe, Kristin Harris Walsh, Donald McKay, Asoka Samarasena
INTRODUCTION: Rural recruitment and retention of physicians is a global issue. The Faculty of Medicine at Memorial University of Newfoundland, Canada, was established as a rural-focused medical school with a social accountability mandate that aimed to meet the healthcare needs of a sparse population distributed over a large landmass as well as the needs of other rural and remote areas of Canada. This study aimed to assess whether Memorial medical degree (MD) and postgraduate (PG) programs were effective at producing physicians for their province and rural physicians for Canada compared with other Canadian medical schools...
March 2018: Rural and Remote Health
James Rourke, Shabnam Asghari, Oliver Hurley, Mohamed Ravalia, Michael Jong, Wanda Parsons, Norah Duggan, Katherine Stringer, Danielle O'Keefe, Scott Moffatt, Wendy Graham, Carolyn Sturge Sparkes, Janelle Hippe, Kristin Harris Walsh, Donald McKay, Asoka Samarasena
CONTEXT: This report describes the community context, concept and mission of The Faculty of Medicine at Memorial University of Newfoundland (Memorial), Canada, and its 'pathways to rural practice' approach, which includes influences at the pre-medical school, medical school experience, postgraduate residency training, and physician practice levels. Memorial's pathways to practice helped Memorial to fulfill its social accountability mandate to populate the province with highly skilled rural generalist practitioners...
March 2018: Rural and Remote Health
Kristel Ehala-Aleksejev, Margus Punab
This study aimed to determine the effect of metabolic syndrome (MS) on the reproductive function in fertile (FM) and male partners of infertile couples (MPIC). We performed a cross-sectional study formatting two study groups: partners of pregnant women (n = 238; mean age 32.0) as FM and male partners of infertile couples (n = 2642; mean age 32.6) as MPIC. A standard semen analysis was performed and clinical, laboratory and lifestyle data were analysed. The adapted NCEP-ATPIII criteria were used to define MS...
2018: PloS One
Melissa Tomkins, Adi Kliot, Athanasius Fm Marée, Saskia A Hogenhout
Members of the Candidatus genus Phytoplasma are small bacterial pathogens that hijack their plant hosts via the secretion of virulence proteins (effectors) leading to a fascinating array of plant phenotypes, such as witch's brooms (stem proliferations) and phyllody (retrograde development of flowers into vegetative tissues). Phytoplasma depend on insect vectors for transmission, and interestingly, these insect vectors were found to be (in)directly attracted to plants with these phenotypes. Therefore, phytoplasma effectors appear to reprogram plant development and defence to lure insect vectors, similarly to social engineering malware, which employs tricks to lure people to infected computers and webpages...
March 13, 2018: Current Opinion in Plant Biology
Yongxi Ou, D C Ralph, R A Buhrman
Robust spin Hall effects (SHE) have recently been observed in nonmagnetic heavy metal systems with strong spin-orbit interactions. These SHE are either attributed to an intrinsic band-structure effect or to extrinsic spin-dependent scattering from impurities, namely, side jump or skew scattering. Here we report on an extraordinarily strong spin Hall effect, attributable to spin fluctuations, in ferromagnetic Fe_{x}Pt_{1-x} alloys near their Curie point, tunable with x. This results in a dampinglike spin-orbit torque being exerted on an adjacent ferromagnetic layer that is strongly temperature dependent in this transition region, with a peak value that indicates a lower bound 0...
March 2, 2018: Physical Review Letters
Ben Lertsakdadet, Bruce Y Yang, Cody E Dunn, Adrien Ponticorvo, Christian Crouzet, Nicole Bernal, Anthony J Durkin, Bernard Choi
Laser speckle imaging (LSI) is a wide-field optical technique that enables superficial blood flow quantification. LSI is normally performed in a mounted configuration to decrease the likelihood of motion artifact. However, mounted LSI systems are cumbersome and difficult to transport quickly in a clinical setting for which portability is essential in providing bedside patient care. To address this issue, we created a handheld LSI device using scientific grade components. To account for motion artifact of the LSI device used in a handheld setup, we incorporated a fiducial marker (FM) into our imaging protocol and determined the difference between highest and lowest speckle contrast values for the FM within each data set (Kbest and Kworst)...
March 2018: Journal of Biomedical Optics
J Ryan Scott, Afton L Hassett, Andrew D Schrepf, Chad M Brummett, Richard E Harris, Daniel J Clauw, Steven E Harte
Objective: Moderate alcohol consumption has been associated with improved health outcomes including reduced risk of heart disease; however, less is known regarding alcohol's effects on chronic pain. The aim of this study was to assess associations between pain, fibromyalgia symptoms, and moderate alcohol use in a large chronic pain sample. Methods: A total of 2,583 new chronic pain patients presenting at a university pain clinic reported alcohol use and completed validated measures; 592 (23%) patients reported drinking, with 502 (85%) classified as moderate drinkers (females ≤7 and males ≤14 drinks/wk)...
March 13, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
Amir Bostani
The solubility of iron (Fe), as an important micronutrient for plant growth, is not high in the calcareous soils, and hence efficient methods must be used to increase its availability for plant use. Accordingly, a two-year research work was conducted to investigate the effects of composted municipal solid wastes (MSW) on Fe accumulation and fractionation in a calcareous soil. Treatments including MSW levels at (0 (control), 15 (MSW1), 30 (MSW2) and 60 (MSW3) t ha-1 dry weight) and usage time (yearly (T1) or biyearly usage (T2)) were tested in a factorial experiment on the basis of a completely randomized block design with three replications...
May 2018: Journal of Trace Elements in Medicine and Biology
S C Ibeneme, C Ekanem, A Ezuma, N Iloanusi, N N Lasebikan, O A Lasebikan, O E Oboh
BACKGROUND: Depletion of ovarian hormone in postmenopausal women has been associated with changes in the locomotor apparatus that may compromise walking function including muscle atrophy/weakness, weight gain, and bone demineralization. Therefore, handgrip strength (HGS), bone mineral density (BMD) and body composition [percentage body fat mass (%BFM), fat mass (FM), Fat-free mass (FFM) and body mass index (BMI)], may significantly vary and predict WB in postmenopausal women. Consequently, the study sought to 1...
March 15, 2018: BMC Musculoskeletal Disorders
Adebayo A Adeleke, Yansun Yao
Experimental studies at finite Pressure-Temperature (P-T) conditions and a theoretical study at 0 K of the phase transition in lead sulphide (PbS) have been inconclusive. Many studies that have been done to understand structural transformation in PbS can broadly be classified into two main ideological streams-one with Pnma and another with Cmcm orthorhombic intermediate phase. To foster better understanding of this phenomenon, we present the result of the first-principles study of phase transition in PbS at finite temperature...
March 14, 2018: Journal of Chemical Physics
I Yu Lisitskiy, A M Kiselev, S E Kiselev
Pathological processes in the craniovertebral region (CVR) are usually accompanied by dislocation complications leading to gross neurological disorders. One of the diseases that affect the CVR and lead to atlanto-axial dislocation (AAD) is rheumatoid arthritis. Errors in the diagnosis of rheumatoid disease and in the choice of a treatment approach may cause adverse outcomes. OBJECTIVE: To define the approach for surgical treatment of AAD associated with rheumatoid disease of the CVR, with allowance for the rigidity of deformity...
2018: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
M Cadeddu, C Giunti, Y F Li, Y Y Zhang
Using the coherent elastic neutrino-nucleus scattering data of the COHERENT experiment, we determine for the first time the average neutron rms radius of ^{133}Cs and ^{127}I. We obtain the practically model-independent value R_{n}=5.5_{-1.1}^{+0.9}  fm using the symmetrized Fermi and Helm form factors. We also point out that the COHERENT data show a 2.3σ evidence of the nuclear structure suppression of the full coherence.
February 16, 2018: Physical Review Letters
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