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https://www.readbyqxmd.com/read/28210735/the-dehydrogenation-mechanism-during-the-incubation-period-in-nanocrystalline-mgh2
#1
Apurva Shantilal Gangrade, Akhil Aditya Varma, Nikhil Kishor Gor, Sweta Shriniwasan, Sankara Sarma V Tatiparti
The dehydrogenation mechanism during the incubation period in nanocrystalline MgH2 (low α: converted metal fraction and dα/dt) and the reasons for the occurrence of the incubation period at 320, 350, and 400 °C were investigated. Pre-existing Mg crystallites can enhance Mg nucleation during the incubation period, as suggested by the estimated activation energy for nucleation (12 ± 2 kJ per mol H). The released H-atoms enter MgH2 as interstitials, as indicated by the MgH2 unit-cell contraction, resulting in increased equatorial Mg-H bond length, decreased charge-density distribution in the interstitial region, as observed from the charge-density maps, and decreased H-H distance in the {001} plane up to the midway of the incubation period...
February 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28208418/mixing-with-applications-to-inertial-confinement-fusion-implosions
#2
V Rana, H Lim, J Melvin, J Glimm, B Cheng, D H Sharp
Approximate one-dimensional (1D) as well as 2D and 3D simulations are playing an important supporting role in the design and analysis of future experiments at National Ignition Facility. This paper is mainly concerned with 1D simulations, used extensively in design and optimization. We couple a 1D buoyancy-drag mix model for the mixing zone edges with a 1D inertial confinement fusion simulation code. This analysis predicts that National Ignition Campaign (NIC) designs are located close to a performance cliff, so modeling errors, design features (fill tube and tent) and additional, unmodeled instabilities could lead to significant levels of mix...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28204976/variation-in-whole-dna-methylation-in-red-maple-acer-rubrum-populations-from-a-mining-region-association-with-metal-contamination-and-cation-exchange-capacity-cec-in-podzolic-soils
#3
K N Kalubi, M Mehes-Smith, G Spiers, A Omri
Although a number of publications have provided convincing evidence that abiotic stresses such as drought and high salinity are involved in DNA methylation reports on the effects of metal contamination, pH, and cation exchange on DNA modifications are limited. The main objective of the present study is to determine the relationship between metal contamination and Cation exchange capacity (CEC) on whole DNA modifications. Metal analysis confirms that nickel and copper are the main contaminants in sampled sites within the Greater Sudbury Region (Ontario, Canada) and liming has increased soil pH significantly even after 30 years following dolomitic limestone applications...
February 15, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28198647/book-review-work-and-sleep-research-insights-for-the-workplace-barling-j-barnes-cm-carleton-el-wagner-dt-eds-work-and-sleep-research-insights-for-the-workplace-oxford-england-oxford-university-press-2016-isbn-10-0190217669
#4
https://www.readbyqxmd.com/read/28198500/molecular-characterization-expression-and-functional-analysis-of-chicken-traf6
#5
J Jin, J S Ran, C W Yang, X S Jiang, Y G Zhou, Z Q Feng, Y Wang, D Lan, P Ren, Y P Liu
Tumor necrosis factor receptor-associated factor 6 (TRAF6) is a crucial adaptor molecule of the interleukin-1 receptor/Toll-like receptor (IL-1/TLR) superfamily, which can trigger downstream signaling cascades involved in innate immunity. The function of TRAF6 has been clarified in mammals but is poorly understood in chicken. In our study, we investigated TRAF6 function in birds, particularly in chicken innate immune responses, by cloning and characterizing chicken TRAF6 (chTRAF6). The full-length coding sequence of chTRAF6 comprised 1638 bp and encoded a 545-amino acid protein, which shares high sequence similarity with TRAF6 of other species and consists of four structurally conserved domains...
February 8, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28196161/effectiveness-of-nd-yag-laser-fiberotomy-in-clinical-crown-lengthening-by-forced-eruption
#6
Masoumeh Faramarzi, Sahand Rikhtegaran, Sogol H Biroon
Crown lengthening by forced eruption is usually followed by conventional surgical procedures. The aim of the present study was to evaluate clinical use of Nd:YAG laser fiberotomy in crown lengthening by forced eruption as an alternative to surgery. Patients who needed crown lengthening were enrolled in this prospective case series and underwent forced eruption. Fiberotomy by Nd:YAG laser was performed 2 days after initiation of forced eruption and every 2 weeks afterward to reach optimum clinical crown length...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28195414/silver-mediated-base-pairs-in-dna-incorporating-purines-7-deazapurines-and-8-aza-7-deazapurines-the-impact-of-reduced-nucleobase-binding-sites-and-altered-glycosylation-position
#7
Frank Seela, Hang Zhao, Peter Leonard, Xiurong Guo, Haozhe Yang
Formation of silver-mediated DNA was studied with oligonucleotides incorporating 8-aza-7-deazapurine, 7-deazapurine and purine nucleosides. The investigation was performed on non self-complementary duplexes with one or two modifications and self-complementary duplexes with an alternating dA-dT motif. Homo base pairs as well as base pair mismatches of dA analogues with dC and Watson-Crick pairs with dT were studied by stoichiometric silver ion titration and Tm measurements. N8-Glycosylated 8-aza-7-deazaadenine forms silver ion mediated base pairs capturing two silver ions (low silver content) while regularly glycosylated 8-aza-7-deazapurine, c7Ad and dA do not form...
February 13, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28194115/low-level-laser-application-in-the-early-myocardial-infarction-stage-has-no-beneficial-role-in-heart-failure
#8
Martha T Manchini, Ednei L Antônio, José Antônio Silva Junior, Paulo de Tarso C de Carvalho, Regiane Albertini, Fernando C Pereira, Regiane Feliciano, Jairo Montemor, Stella S Vieira, Vanessa Grandinetti, Amanda Yoshizaki, Marcio Chaves, Móises P da Silva, Rafael do Nascimento de Lima, Danilo S Bocalini, Bruno L de Melo, Paulo J F Tucci, Andrey J Serra
Low-level laser therapy (LLLT) has been targeted as a promising approach that can mitigate post-infarction cardiac remodeling. There is some interesting evidence showing that the beneficial role of the LLLT could persist long-term even after the end of the application, but it remains to be systematically evaluated. Therefore, the present study aimed to test the hypothesis that LLLT beneficial effects in the early post-infarction cardiac remodeling could remain in overt heart failure even with the disruption of irradiations...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28192980/ambient-pressure-inverse-ion-mobility-spectrometry-coupled-to-mass-spectrometry
#9
Wenjie Liu, Austen Lambert Davis, William F Siems, Du-Lin Yin, Brian H Clowers, Herbert H Hill
Although higher resolving powers are often achieved using ambient pressure drift tube ion mobility mass spectrometry (DT-IMMS) systems, lower duty cycles are often required which directly impacts sensitivity. Moreover, the mechanism of ion gating using Bradbury-Nielsen or Tyndall-Gate configurations routinely results in ion gate depletion effects which discriminate against low mobility ions. This paper reports a new method of ambient pressure ion mobility operation in which inverse ion mobility spectrometry is coupled to a time of flight mass spectrometer to improve sensitivity and minimize the effects of ion gate depletion...
February 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28187832/lethal-and-sublethal-effects-of-cyantraniliprole-on-helicoverpa-assulta-lepidoptera-noctuidae
#10
Junfeng Dong, Kai Wang, Yang Li, Shaoli Wang
Cyantraniliprole is a novel anthranilic diamide insecticide registered for the control of many sucking and chewing insect pests including the oriental tobacco budworm, Helicoverpa assulta (Guenée), which is an important lepidopteran pest of tobacco in China. This study determined the lethal and sublethal effects of cyantraniliprole on a treated parental generation and on an untreated offspring generation of H. assulta. Cyantraniliprole was incorporated in the diet of 3rd-instar larvae of the parental generation...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28185608/effect-of-heat-waves-on-embryo-mortality-in-the-pine-processionary-moth
#11
S Rocha, C Kerdelhué, M L Ben Jamaa, S Dhahri, C Burban, M Branco
Extreme climate events such as heat waves are predicted to become more frequent with climate change, representing a challenge for many organisms. The pine processionary moth Thaumetopoea pityocampa is a Mediterranean pine defoliator, which typically lays eggs during the summer. We evaluated the effects of heat waves on egg mortality of three populations with different phenologies: a Portuguese population with a classical life cycle (eggs laid in summer), an allochronic Portuguese population reproducing in spring, and a Tunisian population from the extreme southern limit of T...
February 10, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28184326/does-endurance-training-compensate-for-neurotrophin-deficiency-following-diabetic-neuropathy
#12
Rasoul Eslami, Reza Gharakhanlou, Abdolreza Kazemi, Amir Bahador Dakhili, Ghazaleh Sorkhkamanzadeh, Ayob Sheikhy
BACKGROUND: A lack of neurotrophic support is believed to contribute to the development of diabetic neuropathy. On the other hand, neurotrophins have consistently been shown to increase in the central and peripheral nervous system following exercise, but the effects of exercise intervention on brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) in diabetic neuropathy are not understood. OBJECTIVES: This experimental study was designed and carried out at the Tarbiat Modares university (TMU) in Tehran, Iran, to investigate the hypothesis that increased activity as endurance training can help to increase the endogenous expression of neurotrophins in diabetic rats...
October 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28183509/assessment-of-myocardial-microstructural-dynamics-by-in%C3%A2-vivo-diffusion-tensor-cardiac-magnetic-resonance
#13
Sonia Nielles-Vallespin, Zohya Khalique, Pedro F Ferreira, Ranil de Silva, Andrew D Scott, Philip Kilner, Laura-Ann McGill, Archontis Giannakidis, Peter D Gatehouse, Daniel Ennis, Eric Aliotta, Majid Al-Khalil, Peter Kellman, Dumitru Mazilu, Robert S Balaban, David N Firmin, Andrew E Arai, Dudley J Pennell
BACKGROUND: Cardiomyocytes are organized in microstructures termed sheetlets that reorientate during left ventricular thickening. Diffusion tensor cardiac magnetic resonance (DT-CMR) may enable noninvasive interrogation of in vivo cardiac microstructural dynamics. Dilated cardiomyopathy (DCM) is a condition of abnormal myocardium with unknown sheetlet function. OBJECTIVES: This study sought to validate in vivo DT-CMR measures of cardiac microstructure against histology, characterize microstructural dynamics during left ventricular wall thickening, and apply the technique in hypertrophic cardiomyopathy (HCM) and DCM...
February 14, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28182895/validity-test-retest-reliability-sensitivity-to-change-and-feasibility-of-motor-cognitive-dual-task-assessments-in-patients-with-dementia
#14
Nele C Lemke, Stefanie Wiloth, Christian Werner, Klaus Hauer
OBJECTIVE: To investigate validity, test-retest reliability, sensitivity to change, and feasibility of dual task (DT) assessments in patients with dementia. DESIGN: Validation study. SETTING: Post ward-rehabilitation. PARTICIPANTS: Geriatric patients (n=105) with dementia (age 82.7±5.9, MMSE score 21.9). MAIN OUTCOME MEASURES: Psychometric quality of DT performance of different DT-tests. Analyses were performed for motor and cognitive performance, and relative DT costs (DTCs)...
January 30, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28179209/administration-of-anabolic-steroid-during-adolescence-induces-long-term-cardiac-hypertrophy-and-increases-susceptibility-to-ischemia-reperfusion-injury-in-adult-wistar-rats
#15
Fernando de Azevedo Cruz Seara, Raiana Andrade Quintanilha Barbosa, Dahienne Ferreira de Oliveira, Diorney Luiz Souza Gran da Silva, Adriana Bastos Carvalho, Andrea Claudia Freitas Ferreira, José Hamilton Matheus Nascimento, Emerson Lopes Olivares
Chronic administration of anabolic androgenic steroids (AAS) in adult rats results in cardiac hypertrophy and increased susceptibility to myocardial ischemia/reperfusion (IR) injury. Molecular analyses demonstrated that hyperactivation of type 1 angiotensin II (AT1) receptor mediates cardiac hypertrophy induced by AAS and also induces down-regulation of myocardial ATP-sensitive potassium channel (KATP), resulting in loss of exercise-induced cardioprotection. Exposure to AAS during adolescence promoted long-term cardiovascular dysfunctions, such as dysautonomia...
February 5, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28178851/corrigendum
#16
(no author information available yet)
Meijer DT, de Muinck Keizer R-JO, Doornberg JN, et al. Diagnostic accuracy of 2-dimensional computed tomography for articular involvement and fracture pattern of posterior malleolar fractures. Foot Ankle Int. 2016;37(1):75-82. (Original DOI: 10.1177/1071100715603999 ).
February 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28174683/post-translational-modifications-of-annexin-a2-are-linked-to-its-association-with-perinuclear-nonpolysomal-mrnp-complexes
#17
Ingvild Aukrust, Linn Andersen Rosenberg, Mia Madeleine Ankerud, Vibeke Bertelsen, Hanne Hollås, Jaakko Saraste, Ann Kari Grindheim, Anni Vedeler
Various post-translational modifications (PTMs) regulate the localisation and function of the multifunctional protein Annexin A2 (AnxA2). In addition to its various tasks as a cytoskeletal- and membrane-associated protein, AnxA2 can function as a trans-acting protein binding to cis-acting sequences of specific mRNAs. In the present study, we have examined the role of Ser25 phosphorylation in subcellular localisation of AnxA2 and its interaction with mRNP complexes. Subcellular fractionation and confocal microscopy of rat neuroendocrine PC12 cells showed that Ser25-phosphorylated AnxA2 (pSer25AnxA2) is absent from the nucleus and mainly localised to the perinuclear region, evidently associating with both membranes and cytoskeletal elements...
February 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28173806/ecg-signal-performance-de-noising-assessment-based-on-threshold-tuning-of-dual-tree-wavelet-transform
#18
Oussama El B'charri, Rachid Latif, Khalifa Elmansouri, Abdenbi Abenaou, Wissam Jenkal
BACKGROUND: Since the electrocardiogram (ECG) signal has a low frequency and a weak amplitude, it is sensitive to miscellaneous mixed noises, which may reduce the diagnostic accuracy and hinder the physician's correct decision on patients. METHODS: The dual tree wavelet transform (DT-WT) is one of the most recent enhanced versions of discrete wavelet transform. However, threshold tuning on this method for noise removal from ECG signal has not been investigated yet...
February 7, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28168421/screening-for-distress-using-the-distress-thermometer-and-the-university-of-washington-quality-of-life-in-post-treatment-head-and-neck-cancer-survivors
#19
Naseem Ghazali, Brenda Roe, Derek Lowe, Sank Tandon, Terry Jones, James Brown, Richard Shaw, Janet Risk, Simon N Rogers
The primary aim was to determine the efficacy of the Distress Thermometer (DT) in screening for anxiety and mood problems against the University of Washington Quality of Life, version 4 (UWQOL). Secondary aims were to evaluate the association between demographic, clinical and health-related QOL variables with significant distress. Two hundred and sixty one disease-free HNC ambulatory patients attending routine follow-up clinics were prospectively recruited. Both DT and UWQOL were completed pre-consultation...
February 6, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28166861/effect-of-dignity-therapy-on-end-of-life-psychological-distress-in-terminally-ill-portuguese-patients-a-randomized-controlled-trial
#20
Miguel Julião, Fátima Oliveira, Baltazar Nunes, António Vaz Carneiro, António Barbosa
OBJECTIVE: Dignity therapy (DT) is a brief form of psychotherapy developed for patients living with a life-limiting illness that has demonstrated efficacy in treating several dimensions of end-of-life psychological distress. Our aim was to determine the influence of DT on demoralization syndrome (DS), the desire for death (DfD), and a sense of dignity (SoD) in terminally ill inpatients experiencing a high level of distress in a palliative care unit. METHOD: A nonblinded phase II randomized controlled trial was conducted with 80 patients who were randomly assigned to one of two groups: the intervention group (DT + standard palliative care [SPC]) or the control group (SPC alone)...
February 7, 2017: Palliative & Supportive Care
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