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https://www.readbyqxmd.com/read/27922240/associations-of-lean-and-fat-mass-measures-with-whole-body-bone-mineral-content-and-bone-mineral-density-in-female-adolescent-weightlifters-and-swimmers
#1
Şükran Nazan Koşar
Body composition and sport participation have been associated with bone mass. The purpose of this study was to determine the associations of lean and fat mass measures with whole body bone mineral content (BMC) and bone mineral density (BMD) in female adolescent weightlifters, swimmers and non-athletic counterparts. This study included a total of 25 female adolescents (mean age: 15.3±1.1 years). Body composition and bone mass were measured by dual-energy X-ray absorptiometry. In most of the studied variables weight lifters had higher values compared to swimmers and non-athletes (p < 0...
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27922106/in-situ-one-step-synthesis-of-carbon-encapsulated-naked-magnetic-metal-nanoparticles-conducted-without-additional-reductants-and-agents
#2
Jun Kang, Yeonwon Kim, Hye-Min Kim, Xiulan Hu, Nagahiro Saito, Jae-Hyuk Choi, Myeong-Hoon Lee
C-encapsulated highly pure Ni, Co, and Fe magnetic nanoparticles (MNPs/C) were synthesized by an innovative one-step in-situ plasma in liquid method (solution plasma processing, SPP) without any additional reductants, agents, or treatment. Successful encapsulation of MNPs was demonstrated by using inductively coupled plasma-atomic emission spectrometry and cyclic voltammetry techniques. The obtained X-ray diffraction patterns and transmission electron microscopy images corresponded to MNPs with average diameters of 5 nm and good crystalline structure...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922093/algaas-55-fe-x-ray-radioisotope-microbattery
#3
S Butera, M D C Whitaker, G Lioliou, A M Barnett
This paper describes the performance of a fabricated prototype Al0.2Ga0.8As (55)Fe radioisotope microbattery photovoltaic cells over the temperature range -20 °C to 50 °C. Two 400 μm diameter p(+)-i-n(+) (3 μm i-layer) Al0.2Ga0.8As mesa photodiodes were used as conversion devices in a novel X-ray microbattery prototype. The changes of the key microbattery parameters were analysed in response to temperature: the open circuit voltage, the maximum output power and the internal conversion efficiency decreased when the temperature was increased...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921518/increased-radio-toxicity-in-two-cancerous-cell-lines-irradiated-by-low-and-high-energy-photons-in-the-presence-of-thio-glucose-bound-gold-nanoparticles
#4
Shokouhozaman Soleymanifard, Atefeh Rostami, Seyed Amir Aledavood, Maryam Moghadam Matin, Ameneh Sazgarnia
PURPOSE: Gold nanoparticles modified by thio-glucose have been believed to increase the toxicity of radiotherapy in human malignant cells. We report the effect of thio-glucose-bound gold nanoparticles (Glu-G nanoparticles), 16 nm in size, on two human lung (QU-DB) and breast (MCF7) cancer cell lines combined with kilo and megavoltage X-rays. MATERIALS AND METHODS: The shape and surface characteristics, the size distribution and light absorption spectrum of the prepared nanoparticles were measured by transmission electron microscopy, dynamic light scattering, and Ultraviolet-Visible spectrophotometry, respectively...
December 6, 2016: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/27921335/reduction-of-cp-sb-4-with-subvalent-main-group-metal-reductants-syntheses-and-structures-of-l1mg-4-sb4-and-l2ga-2-sb4-containing-edge-missing-sb4-units
#5
Stephan Schulz, Chelladurai Ganesamoorthy, Julia Krüger, Christoph Wölper, Anton S Nizovtsev
[Cp*Sb]4 (Cp* = C5Me5) reacts with [L1Mg]2 and L2Ga with for-mation of [(L1Mg)4(4,1:2:2:2-Sb4)] {L1 = i-Pr2NC[N(2,6-i-Pr2C6H3)]2, 1} and [(L2Ga)2(,2:2-Sb4)] {L2 = HC[C(Me)N(2,6-i-Pr2C6H3)]2, 2}. The cleavage of the Sb-Sb and Sb-C bonds in [Cp*Sb]4 are the crucial steps in both reactions. The formation of 1 occurred via elimination of the Cp* anion and formation of Cp*MgL1, while 2 was formed by reductive elimination of Cp*2 and oxidative addition of L2Ga to the Sb4 unit. 1 and 2 were characterized by heteronuclear NMR spectroscopy and single crystal X-ray diffraction and their bonding situation was studied by quantum chemical calculations...
December 6, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27921226/the-relationship-between-aerosol-particles-chemical-composition-and-optical-properties-to-identify-the-biomass-burning-contribution-to-fine-particles-concentration-a-case-study-for-s%C3%A3-o-paulo-city-brazil
#6
Regina Maura de Miranda, Fabio Lopes, Nilton Évora do Rosário, Marcia Akemi Yamasoe, Eduardo Landulfo, Maria de Fatima Andrade
The air quality in the Metropolitan Area of São Paulo (MASP) is primarily determined by the local pollution source contribution, mainly the vehicular fleet, but there is a concern about the role of remote sources to the fine mode particles (PM2.5) concentration and composition. One of the most important remote sources of atmospheric aerosol is the biomass burning emissions from São Paulo state's inland and from the central and north portions of Brazil. This study presents a synergy of different measurements of atmospheric aerosol chemistry and optical properties in the MASP in order to show how they can be used as a tool to identify particles from local and remote sources...
December 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27921185/hand-bone-loss-in-early-rheumatoid-arthritis-during-a-methotrexate-based-treat-to-target-strategy-with-or-without-adalimumab-a-substudy-of-the-optimized-treatment-algorithm-in-early-ra-opera-trial
#7
L M Ørnbjerg, M Østergaard, T Jensen, K Hørslev-Petersen, K Stengaard-Pedersen, P Junker, T Ellingsen, P Ahlquist, H Lindegaard, A Linauskas, A Schlemmer, M Y Dam, I Hansen, T Lottenburger, C G Ammitzbøll, A Jørgensen, S B Krintel, J Raun, M L Hetland, Ole Slot, Lars Kjær Nielsen, Henrik Skjødt, Ole Majgaard, Tove Lorenzen, Hans Christian Horn, Marcin Kowalski, Inger Lauge Johansen, Peter Mosborg Pedersen, Natalia Manilo, Henning Bliddal
This study aims to investigate 1-year hand bone loss (HBL1-year) in early rheumatoid arthritis (RA) patients treated with a methotrexate (MTX) and intra-articular triamcinolone treat-to-target strategy +/- adalimumab and to determine if HBL6months is associated with radiographic progression after 2 years. In a clinical trial (OPERA) of 180 treatment-naive early RA patients, bone mineral density (BMD) was estimated from hand radiographs with digital X-ray radiogrammetry (DXR) at baseline, after 6 (n = 90) and 12 months (n = 70) of follow-up...
December 5, 2016: Clinical Rheumatology
https://www.readbyqxmd.com/read/27921155/comparison-of-two-and-three-dimensional-measurement-of-the-cobb-angle-in-scoliosis
#8
Ricarda Lechner, David Putzer, Dietmar Dammerer, Michael Liebensteiner, Christian Bach, Martin Thaler
PURPOSE: The Cobb angle as an objective measure is used to determine the progression of deformity, and is the basis in the planning of conservative and surgical treatment. However, studies have shown that the Cobb angle has two limitations: an inter- and intraobserver variability of the measurement is approximately 3-5 degrees, and high variability regarding the definition of the end vertebra. Scoliosis is a three-dimensional (3D) pathology, and 3D pathologies cannot be completely assessed by two-dimensional (2D) methods, like 2D radiography...
December 5, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27921150/bone-mineral-density-is-decreased-in-fibromyalgia-syndrome-a-systematic-review-and-meta-analysis
#9
Sikarin Upala, Wai Chung Yong, Anawin Sanguankeo
Previous studies have shown that fibromyalgia syndrome (FMS) is associated with low level of physical activity and exercise, which may lead to an increased risk of osteoporosis. However, studies of bone mineral density (BMD) in fibromyalgia have shown conflicting results. Thus, we conducted a systematic review and meta-analysis to better characterize the association between FMS and BMD. A comprehensive search of the databases MEDLINE and EMBASE was performed from inception through May 2016. The inclusion criterion was the observational studies' assessment of the association between fibromyalgia and bone mineral density in adult subjects...
December 5, 2016: Rheumatology International
https://www.readbyqxmd.com/read/27921146/bone-loss-at-the-distal-femur-and-proximal-tibia-in-persons-with-spinal-cord-injury-imaging-approaches-risk-of-fracture-and-potential-treatment-options
#10
REVIEW
C M Cirnigliaro, M J Myslinski, M F La Fountaine, S C Kirshblum, G F Forrest, W A Bauman
Persons with spinal cord injury (SCI) undergo immediate unloading of the skeleton and, as a result, have severe bone loss below the level of lesion associated with increased risk of long-bone fractures. The pattern of bone loss in individuals with SCI differs from other forms of secondary osteoporosis because the skeleton above the level of lesion remains unaffected, while marked bone loss occurs in the regions of neurological impairment. Striking demineralization of the trabecular epiphyses of the distal femur (supracondylar) and proximal tibia occurs, with the knee region being highly vulnerable to fracture because many accidents occur while sitting in a wheelchair, making the knee region the first point of contact to any applied force...
December 5, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27921145/compressive-loading-of-the-murine-tibia-reveals-site-specific-micro-scale-differences-in-adaptation-and-maturation-rates-of-bone
#11
I Bergström, J G Kerns, A E Törnqvist, C Perdikouri, N Mathavan, A Koskela, H B Henriksson, J Tuukkanen, G Andersson, H Isaksson, A E Goodship, S H Windahl
: Loading increases bone mass and strength in a site-specific manner; however, possible effects of loading on bone matrix composition have not been evaluated. Site-specific structural and material properties of mouse bone were analyzed on the macro- and micro/molecular scale in the presence and absence of axial loading. The response of bone to load is heterogeneous, adapting at molecular, micro-, and macro-levels. INTRODUCTION: Osteoporosis is a degenerative disease resulting in reduced bone mineral density, structure, and strength...
December 5, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27920947/the-daniel-k-inouye-college-of-pharmacy-scripts-poha-berry-physalis-peruviana-with-potential-anti-inflammatory-and-cancer-prevention-activities
#12
Leng Chee Chang, Mayuramas Sang-Ngern, John M Pezzuto, Carolyn Ma
The Daniel K. Inouye College of Pharmacy, during a historic event in Spring 2016, graduated the first two students in the Pacific region to earn a PhD in pharmaceutical sciences at the University of Hawai'i at Hilo. The college offers PhD programs in these five disciplines: Cancer Biology, Medicinal Chemistry, Pharmaceutics, Pharmacognosy, and Pharmacology. One of the Pharmacognosy dissertations focused on plant-derived natural products with potential anti-inflammatory and cancer chemopreventive activities...
November 2016: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/27920931/crystal-structures-of-n-4-phenyl-thia-zol-2-yl-carbamo-thio-yl-benzamide-and-n-4-4-bromo-phen-yl-thia-zol-2-yl-carbamo-thio-yl-benzamide-from-synchrotron-x-ray-diffraction
#13
Ekaterina S Gantimurova, Alexander S Bunev, Kristina Yu Talina, Gennady I Ostapenko, Pavel V Dorovatovskii, Nikolai N Lobanov, Victor N Khrustalev
The title compounds, C17H13N3OS2, (I), and C17H12BrN3OS2, (II), are potential active pharmaceutical ingredients. Compound (I) comprises two almost planar fragments. The first is the central (carbamo-thio-yl)amide (r.m.s. deviation = 0.038 Å), and the second consists of the thia-zole and two phenyl rings (r.m.s. deviation = 0.053 Å). The dihedral angle between these planes is 15.17 (5)°. Unlike (I), compound (II) comprises three almost planar fragments. The first is the central N-(thia-zol-2-ylcarbamo-thio-yl)amide (r...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920923/mer-tri-chlorido-tris-tetra-hydro-thio-phene-%C3%AE%C2%BAs-iridium-iii-preparation-and-comparison-with-other-mer-tri-chlorido-tris-tetra-hydro-thio-phene-%C3%AE%C2%BAs-metal-complexes
#14
Loren C Brown, Christine M DuChane, Joseph S Merola
The title complex, [IrCl3(C4H8S)3], was prepared according to a literature method. A suitable crystal was obtained by diffusion of pentane into a di-chloro-methane solution and analyzed by single-crystal X-ray diffraction at 100 K. The title complex is isotypic with mer-tri-chlorido-tris-(tetra-hydro-thio-phene-κS)rhodium(III). However, the orientation of the tetra-hydro-thio-phene rings is different from an earlier report of mer-tri-chlorido-tris-(tetra-hydro-thio-phene-κS)iridium(III) deposited in the Cambridge Structural Database...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920917/redetermination-of-metarossite-cav-5-2o6%C3%A2-2h2o
#15
Anaïs Kobsch, Robert T Downs, Kenneth J Domanik
The crystal structure of metarossite, ideally CaV2O6·2H2O [chemical name: calcium divanadium(V) hexa-oxide dihydrate], was first determined using precession photographs, with fixed isotropic displacement parameters and without locating the positions of the H atoms, leading to a reliability factor R = 0.11 [Kelsey & Barnes (1960 ▸). Can. Mineral.6, 448-466]. This communication reports a structure redetermination of this mineral on the basis of single-crystal X-ray diffraction data of a natural sample from the Blue Cap mine, San Juan County, Utah, USA (R1 = 0...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920903/toward-clean-suspended-cvd-graphene
#16
Alexander Yulaev, Guangjun Cheng, Angela R Hight Walker, Ivan V Vlassiouk, Alline Myers, Marina S Leite, Andrei Kolmakov
The application of suspended graphene as electron transparent supporting media in electron microscopy, vacuum electronics, and micromechanical devices requires the least destructive and maximally clean transfer from their original growth substrate to the target of interest. Here, we use thermally evaporated anthracene films as the sacrificial layer for graphene transfer onto an arbitrary substrate. We show that clean suspended graphene can be achieved via desorbing the anthracene layer at temperatures in the 100 °C to 150 °C range, followed by two sequential annealing steps for the final cleaning, using Pt catalyst and activated carbon...
2016: RSC Advances
https://www.readbyqxmd.com/read/27920896/assessing-the-hyperthermic-properties-of-magnetic-heterostructures-the-case-of-gold-iron-oxide-composites
#17
Elvira Fantechi, Paula M Castillo, Erika Conca, Francesca Cugia, Claudio Sangregorio, Maria Francesca Casula
Gold-iron oxide composites were obtained by in situ reduction of an Au(III) precursor by an organic reductant (either potassium citrate or tiopronin) in a dispersion of preformed iron oxide ultrasmall magnetic (USM) nanoparticles. X-ray diffraction, transmission electron microscopy, chemical analysis and mid-infrared spectroscopy show the successful deposition of gold domains on the preformed magnetic nanoparticles, and the occurrence of either citrate or tiopronin as surface coating. The potential of the USM@Au nanoheterostructures as heat mediators for therapy through magnetic fluid hyperthermia was determined by calorimetric measurements under sample irradiation by an alternating magnetic field with intensity and frequency within the safe values for biomedical use...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920895/organosilane-functionalization-of-nanostructured-indium-tin-oxide-films
#18
R Pruna, F Palacio, M Martínez, O Blázquez, S Hernández, B Garrido, M López
Fabrication and organosilane-functionalization and characterization of nanostructured ITO electrodes are reported. Nanostructured ITO electrodes were obtained by electron beam evaporation, and a subsequent annealing treatment was selectively performed to modify their crystalline state. An increase in geometrical surface area in comparison with thin-film electrodes area was observed by atomic force microscopy, implying higher electroactive surface area for nanostructured ITO electrodes and thus higher detection levels...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920890/mesoporous-silica-nanoparticles-equipped-with-surface-nanovalves-for-ph-controlled-liberation-of-doxorubicin
#19
N V Roik, L A Belyakova
Silica carriers equipped with molecular and supramolecular pH-sensitive nanovalves were designed by combination of sol-gel synthesis and selective postsynthetic modification. Mesoporous structure of synthesized materials was characterized by low-temperature nitrogen adsorption-desorption, small-angle X-ray diffraction and transmission electron microscopy. Chemical immobilization of N-[N'-(N'-phenyl)-2-aminophenyl]aminoalkyl groups was confirmed by IR spectral and chemical analyses of surface layer. Loading and release behaviour of synthesized drug carriers was studied in phosphate buffer solutions with pH 5...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920884/novel-combinations-of-synthesized-zno-nps-and-ceftazidime-evaluation-of-their-activity-against-standards-and-new-clinically-isolated-pseudomonas-aeruginosa
#20
Elham Isaei, Shahla Mansouri, Fereshteh Mohammadi, Sadegh Taheritarigh, Zohreh Mohammadi
BACKGROUND: Antibiotic resistant bacteria can be considered as a main problem in infection management. Zinc oxide nanoparticles (ZnO NPs), individually or in combination with antibiotics, can be considered as good candidates for struggling against drug resistant bacteria. METHODS: In this study, Zinc oxide nanoparticles were synthesized using sol-gel method in low temperature as a cost effective procedure and characterized by X-ray diffraction and Scanning Electron Microscopy...
October 2016: Avicenna Journal of Medical Biotechnology
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