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https://www.readbyqxmd.com/read/27911481/photoluminescence-and-thermoluminescence-of-k2-mg-so4-2-eu-and-evaluation-of-its-kinetic-parameters
#1
Archana Deshpande, N S Dhoble, S C Gedam, S J Dhoble
The K2 Mg(SO4 )2 :Eu phosphor, synthesized by a solid-state diffusion method, was studied for its photoluminescence (PL) and thermoluminescence (TL) characteristics. The X-ray diffraction (XRD) pattern of the material was matched with the standard JCPDF No. 36-1499. For PL characteristics, K2 Mg(SO4 )2 :Eu(2)(+) showed an emission peak at 474 nm when excited at 340 nm, while it showed Eu(3)(+) emission at 580 nm, and 594 nm splitting at 613 nm and 618 nm for an excitation of 396 nm wavelength due to radiative transitions from (5) D0 to (7) Fj (j = 0, 1, 2, 3)...
December 2, 2016: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/27911418/synthesis-and-characterization-of-fe-doped-aluminosilicate-nanotubes-with-enhanced-electron-conductive-properties
#2
Ehsan Shafia, Serena Esposito, Elnaz Bahadori, Marco Armandi, Maela Manzoli, Barbara Bonelli
The goal of the protocol is to synthesize Fe-doped aluminosilicate nanotubes of the imogolite type with the formula (OH)3Al2-xFexO3SiOH. Doping with Fe aims at lowering the band gap of imogolite, an insulator with the chemical formula (OH)3Al2O3SiOH, and at modifying its adsorption properties towards azo-dyes, an important class of organic pollutants of both wastewater and groundwater. Fe-doped nanotubes are obtained in two ways: by direct synthesis, where FeCl3 is added to an aqueous mixture of the Si and Al precursors, and by post-synthesis loading, where preformed nanotubes are put in contact with a FeCl3•6H2O aqueous solution...
November 15, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911405/automated-robotic-dispensing-technique-for-surface-guidance-and-bioprinting-of-cells
#3
Ramya Bhuthalingam, Pei Q Lim, Scott A Irvine, Subbu S Venkatraman
This manuscript describes the introduction of cell guidance features followed by the direct delivery of cells to these features in a hydrogel bioink using an automated robotic dispensing system. The particular bioink was selected as it allows cells to sediment towards and sense the features. The dispensing system bioprints viable cells in hydrogel bioinks using a backpressure assisted print head. However, by replacing the print head with a sharpened stylus or scalpel, the dispensing system can also be employed to create topographical cues through surface etching...
November 18, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911403/preparation-and-reactivity-of-a-triphosphenium-bromide-salt-a-convenient-and-stable-source-of-phosphorus-i
#4
Stephanie C Kosnik, Justin F Binder, Maxemilian C Nascimento, Charles L B Macdonald
We present herein the optimized synthesis of a triphosphenium bromide salt. Apart from being a versatile metathesis reagent, this unusually stable low-valent-phosphorus-containing compound acts as a useful P(+) transfer agent. Unlike traditional methods employed to access low-coordinate phosphorus species which usually require pyrophoric phosphorus-containing precursors (white phosphorus, Tris(trimethylsilyl)phosphine, etc.), or harsh reducing agents (alkali metals, potassium graphite, etc.), the current approach does not involve pyrophoric or explosive reagents and can be done on large scales (>20 g) in excellent yields by undergraduates with basic air-free synthetic training...
November 22, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911400/visualizing-stromule-frequency-with-fluorescence-microscopy
#5
Jacob O Brunkard, Anne M Runkel, Patricia Zambryski
Stromules, or "stroma-filled tubules", are narrow, tubular extensions from the surface of the chloroplast that are universally observed in plant cells but whose functions remain mysterious. Alongside growing attention on the role of chloroplasts in coordinating plant responses to stress, interest in stromules and their relationship to chloroplast signaling dynamics has increased in recent years, aided by advances in fluorescence microscopy and protein fluorophores that allow for rapid, accurate visualization of stromule dynamics...
November 23, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911375/fabrication-of-white-light-emitting-electrochemical-cells-with-stable-emission-from-exciplexes
#6
Soichi Uchida, Daisuke Takizawa, Satoru Ikeda, Hironori Takeuchi, Suzushi Nishimura, Hiroyuki Nishide, Yoshinori Nishikitani
The authors present an approach for fabricating stable white light emission from polymer light-emitting electrochemical cells (PLECs) having an active layer which consists of blue-fluorescent poly(9,9-di-n-dodecylfluorenyl-2,7-diyl) (PFD) and π-conjugated triphenylamine molecules. This white light emission originates from exciplexes formed between PFD and amines in electronically excited states. A device containing PFD, 4,4',4''-tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), Poly(ethylene oxide) and K2CF3SO3 showed white light emission with Commission internationale de l'éclairage (CIE) coordinates of (0...
November 15, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911282/role-of-rehabilitation-in-hurler-s-syndrome
#7
Sudhir Ramkishore Mishra, Mona Shastri, Jaishree Ramesh
Hurler syndrome is an inherited autosomal recessive disorder of lysosomal accumulation of un-degraded glucosaminoglycan secondary to deficiency of a-L-Iduronidase enzyme. It is most severe form of Mucopolysaccharidosis with incidence of 1:100 000. It has multisystemic involvement leading to multiple deformity, disability and death within 10th years of life. A 2 year old boy presented with umbilical hernia, gross developmental delay and a progressive spinal deformity. On detailed clinical, radiological and laboratory investigation he was diagnosed as Hurler's syndrome...
November 25, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27911234/ventriculostomy-associated-hemorrhage-a-risk-assessment-by-radiographic-simulation
#8
Faith C Robertson, Muhammad M Abd-El-Barr, Srinivasan Mukundan, William B Gormley
OBJECTIVE Ventriculostomy entry sites are commonly selected by freehand estimation of Kocher's point or approximations from skull landmarks and a trajectory toward the ipsilateral frontal horn of the lateral ventricles. A recognized ventriculostomy complication is intracranial hemorrhage from cortical vessel damage; reported rates range from 1% to 41%. In this report, the authors assess hemorrhagic risk by simulating traditional ventriculostomy trajectories and using CT angiography (CTA) with venography (CTV) data to identify potential complications, specifically from cortical draining veins...
December 2, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27911187/fxr1a-associated-micrornp-a-driver-of-specialized-non-canonical-translation-in-quiescent-conditions
#9
Syed I A Bukhari, Shobha Vasudevan
Eukaryotic protein synthesis is a multifaceted process that requires coordination of a set of translation factors in a particular cellular state. During normal growth and proliferation, cells generally make their proteome via conventional translation that utilizes canonical translation factors. When faced with environmental stress such as growth factor deprivation, or in response to biological cues such as developmental signals, cells can have stalled canonical translation. In this situation, cells adapt alternative modes of translation to make specific proteins necessary for required biological functions under these distinct conditions...
December 2, 2016: RNA Biology
https://www.readbyqxmd.com/read/27911186/rna-decay-evolution-and-the-testis
#10
Samantha H Jones, Miles Wilkinson
NMD is a highly conserved pathway that degrades specific subsets of RNAs. There is increasing evidence for roles of NMD in development. In this commentary, we focus on spermatogenesis, a process dramatically impeded upon loss or disruption of NMD. NMD requires strict regulation for normal spermatogenesis, as loss of a newly discovered NMD repressor, UPF3A, also causes spermatogenic defects, most prominently during meiosis. We discuss the unusual evolution of UPF3A, whose paralog, UPF3B, has the opposite biochemical function and acts in brain development...
December 2, 2016: RNA Biology
https://www.readbyqxmd.com/read/27911081/shared-decision-making-in-youth-mental-health-care-using-the-evidence-to-plan-treatments-collaboratively
#11
David A Langer, Amanda Jensen-Doss
The shared decision-making (SDM) model is one in which providers and consumers of health care come together as collaborators in determining the course of care. The model is especially relevant to youth mental health care, when planning a treatment frequently entails coordinating both youth and parent perspectives, preferences, and goals. The present article first provides the historical context of the SDM model and the rationale for increasing our field's use of SDM when planning psychosocial treatments for youth and families...
December 2, 2016: Journal of Clinical Child and Adolescent Psychology
https://www.readbyqxmd.com/read/27910974/fine-tuning-terminal-solvent-ligands-to-rationally-enhance-the-energy-barrier-in-dinuclear-dysprosium-single-molecule-magnets
#12
Kun Zhang, Chen Yuan, Fu-Sheng Guo, Yi-Quan Zhang, Yao-Yu Wang
In search of simple approaches to rationally enhance the energy barriers in polynuclear dysprosium single-molecule magnets, a new system containing two structurally closely related dinuclear dysprosium complexes, namely [Dy2(L)2(DBM)2(DMF)2] (1) and [Dy2(L)2(DBM)2(DMA)2]·2DMA (2) (HDBM = dibenzoylmethane, H2L = 2-hydroxy-N'-(2-hydroxy-3-methoxybenzylidene)benzohydrazide), is introduced and the structure-dependent magnetic properties are investigated. The two complexes display only slight variations in the coordination geometries of the Dy(iii) ion but display remarkably different magnetic behaviors...
December 2, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27910955/pgc-1%C3%AE-dictates-endothelial-function-through-regulation-of-enos-expression
#13
Siobhan M Craige, Swenja Kröller-Schön, Chunying Li, Shashi Kant, Shenghe Cai, Kai Chen, Mayur M Contractor, Yongmei Pei, Eberhard Schulz, John F Keaney
Endothelial dysfunction is a characteristic of many vascular related diseases such as hypertension. Peroxisome proliferator activated receptor gamma, coactivator 1α (PGC-1α) is a unique stress sensor that largely acts to promote adaptive responses. Therefore, we sought to define the role of endothelial PGC-1α in vascular function using mice with endothelial specific loss of function (PGC-1α EC KO) and endothelial specific gain of function (PGC-1α EC TG). Here we report that endothelial PGC-1α is suppressed in angiotensin-II (ATII)-induced hypertension...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910935/disentangling-the-roles-of-cholesterol-and-cd59-in-intermedilysin-pore-formation
#14
Courtney M Boyd, Edward S Parsons, Richard A G Smith, John M Seddon, Oscar Ces, Doryen Bubeck
The plasma membrane provides an essential barrier, shielding a cell from the pressures of its external environment. Pore-forming proteins, deployed by both hosts and pathogens alike, breach this barrier to lyse target cells. Intermedilysin is a cholesterol-dependent cytolysin that requires the human immune receptor CD59, in addition to cholesterol, to form giant β-barrel pores in host membranes. Here we integrate biochemical assays with electron microscopy and atomic force microscopy to distinguish the roles of these two receptors in mediating structural transitions of pore formation...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910932/oer-activity-manipulated-by-iro6-coordination-geometry-an-insight-from-pyrochlore-iridates
#15
Wei Sun, Ji-Yuan Liu, Xue-Qing Gong, Waqas-Qamar Zaman, Li-Mei Cao, Ji Yang
The anodic reaction of oxygen evolution reaction (OER), an important point for electrolysis, however, remains the obstacle due to its complicated reaction at electrochemical interfaces. Iridium oxide (IrO2) is the only currently known 5d transition metal oxide possessing admirable OER activity. Tremendous efforts have been carried out to enhance the activity of iridium oxides. Unfortunately there lies a gap in understanding what factors responsible for the activity in doped IrO2 or the novel crystal structure...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910925/thrombomodulin-regulates-monocye-differentiation-via-pkc%C3%AE-and-erk1-2-pathway-in-vitro-and-in-atherosclerotic-artery
#16
Chien-Sung Tsai, Yi-Wen Lin, Chun-Yao Huang, Chun-Min Shih, Yi-Ting Tsai, Nai-Wen Tsao, Chin-Sheng Lin, Chun-Che Shih, Hellen Jeng, Feng-Yen Lin
Thrombomodulin (TM) modulates the activation of protein C and coagulation. Additionally, TM regulates monocyte migration and inflammation. However, its role on monocyte differentiation is still unknown. We investigated the effects of TM on monocyte differentiation. First, we found that TM was increased when THP-1 cells were treated with phorbol-12-myristate-13-acetate (PMA). Overexpression of TM enhanced the macrophage markers, CD14 and CD68 expression in PMA-induced THP-1. TM siRNA depressed the PMA-induced increase of p21(Cip1/WAF1) via ERK1/2-NF-kB p65 signaling...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910840/-na-%C3%A2-5-mno2-13-nanorods-a-new-tunnel-structure-for-electrode-materials-determined-ab-initio-and-refined-through-a-combination-of-electron-and-synchrotron-diffraction-data
#17
Enrico Mugnaioli, Mauro Gemmi, Marco Merlini, Michele Gregorkiewitz
(Nax□1 - x)5[MnO2]13 has been synthesized with x = 0.80 (4), corresponding to Na0.31[MnO2]. This well known material is usually cited as Na0.4[MnO2] and is believed to have a romanèchite-like framework. Here, its true structure is determined, ab initio, by single-crystal electron diffraction tomography (EDT) and refined both by EDT data applying dynamical scattering theory and by the Rietveld method based on synchrotron powder diffraction data (χ(2) = 0.690, Rwp = 0.051, Rp = 0.037, RF2 = 0.035). The unit cell is monoclinic C2/m, a = 22...
December 1, 2016: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
https://www.readbyqxmd.com/read/27910833/cu-ii-and-zn-ii-%C3%AE-diketonate-coordination-polymers-based-on-pyrimidin-2-amine-pyrazine-and-1-2-bis-4-pyridyl-ethane
#18
Franc Perdih
Copper(II) and zinc(II) bis(4,4,4-trifluoro-1-phenylbutane-1,3-dionato) compounds with pyrimidin-2-amine (pyr2a), pyrazine (pyz) and 1,2-bis(4-pyridyl)ethane (dpet) were prepared and solid-state structures of coordination polymers [M(tfpb)2(pyr2a)]∞ [M = Cu (1), Zn (2); tfpb = 4,4,4-trifluoro-1-phenylbutane-1,3-dionate], [M(tfpb)2(pyz)]∞ [M = Cu (3), Zn (4a, 4b)] and [Cu(tfpb)2(dpet)]∞ (5), respectively, were determined by single-crystal X-ray analysis. The coordination of metal centers in all compounds is octahedral with nitrogen ligands occupying the axial positions...
December 1, 2016: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
https://www.readbyqxmd.com/read/27910762/genetic-diversity-and-relationships-of-24-strains-of-genus-auricularia-agaricomycetes-assessed-using-srap-markers
#19
Ping Du, Tian-Xu Cao, Bao-Kai Cui, Yuan Yuan, Yu-Cheng Dai
Auricularia species are well known for their traditional edible and medicinal importance. In this study, sequence-related amplified polymorphism (SRAP) markers were used to evaluate the genetic diversity and relationships of 24 Auricularia strains obtained from different ecological regions of China. A total of 402 polymorphic loci were detected using 11 SRAP primer combinations with 100% polymorphic loci. The similarity coefficient ranged from 0.662 to 0.903, with an average of 0.73. Cluster analysis using the pair-group method using arithmetic average, based on the data from SRAP loci amplified by 11 primer pairs, showed that 24 Auricularia strains were distinguished into 4 groups with 73% similarity...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27910672/improved-spatial-calibration-for-the-cxrs-system-on-east
#20
X H Yin, Y Y Li, J Fu, D Jiang, S Y Feng, Y Q Gu, Y Cheng, B Lyu, Y J Shi, M Y Ye, B N Wan
A Charge eXchange Recombination Spectroscopy (CXRS) diagnostic system has been developed to measure profiles of ion temperature and rotation since 2014 on EAST. Several techniques have been developed to improve the spatial calibration of the CXRS diagnostic. The sightline location was obtained by measuring the coordinates of three points on each sightline using an articulated flexible coordinate measuring arm when the vessel was accessible. After vacuum pumping, the effect of pressure change in the vacuum vessel was evaluated by observing the movement of the light spot from back-illuminated sightlines on the first wall using the newly developed articulated inspection arm...
November 2016: Review of Scientific Instruments
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