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Musculoskeletal Outcomes from Chronic High-Speed High-Impact Resistive Exercise

countermeasures that sought to abate musculoskeletal losses (Kramer et al., 2017; Trappe et al., 2007). Those countermeasures included flywheel-based resistive exercise (Trappe et al., 2007) and high-intensity jump training (Kramer et al., 2017). Results showed that concurrent exercise reduced muscle mass and strength losses in those who received the experimental treatment as compared to bed-rested controls, yet neither countermeasure addressed bone losses, which is an important in- and postflight concern (Kramer et al, 2017; Trappe et al., 2007). However, a recent study with

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Investigation of Murine T-Cells and Cancer Cells under Thermal Stressors and 2D Slow Rotating System Effects as a Testbed for Suborbital Flights

Introduction There is a large body of research ( Licato and Grimm, 1999 ; Uva et al., 2002 ; Gridley et al., 2009 ; Singh et al., 2010 ; Thiel et al., 2012 ; Hauschild et al., 2014 ; Martinez et al., 2015 ; Nickerson et al., 2016 ) showing that exposure to microgravity leads to suppressed immunity in both rodents and humans. The downregulation of the immune system is measured by a decreased number of T-cells, alterations in immune cell subsets, epigenetic regulation, slower proliferation rate, and other immunological parameters. Altered gravity has

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Graphene oxide-multiwalled carbon nanotubes composite as an anode for lithium ion batteries

, other mechanisms, like micro-cavities lithium storage or surface storage are taken into consideration [ 1 , 17 ]. The reason of excess of the capacity is still the matter of intensive studies and discussions. The understanding of the nature of lithium storage into rGO can contribute to improvement of the properties of this very promising candidate for a LIB’s high capacity anodes. However, to determine the mechanism of excess of the capacity a model system is required. So far, there are no experimental results of the electrochemical lithium storage in a nonreduced GO

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Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics

dielectric losses from 100 kHz to 1 MHz were measured using a precision LCR meter (4284 A) with an applied AC voltage of 100 mV from room temperature up to 700 °C in air. Polarization-electric field (P-E) hysteresis loop measurements were made at room temperature in silicone oil using a Radiant Technology RT-66A standardized ferroelectric test system and Trek 609E-6 high voltage amplifier. These measurements were performed at a maximum applied voltage of 20 kV/cm. Impedance spectroscopy of the sample was carried out using an HP-4192A impedance analyzer (Agilent

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Microstructural, optical and electrical properties of Cl-doped CdTe single crystals

1 Introduction CdTe is of considerable technological importance for use in semiconductor-based radiation detection applications, such as medical imaging and homeland security fields. The fabricated CdTe radiation detectors can be operated at room-temperature due to the favorable band gap (1.44 eV) and have been researched by various groups [ 1 – 7 ]. High resistivity is required for any semiconductor material to be used in realizing high-performance radiation detectors. Because high bias voltage is needed to improve the charge collection efficiency of

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Effect of lead salts on phase, morphologies and photoluminescence of nanocrystalline PbMoO4 and PbWO4 synthesized by microwave radiation

1 Introduction Molybdate and tungstate are inorganic compounds which have very interesting properties for applications such as luminescent materials, electro-optic materials, scintillators and catalysts [ 1 , 2 ]. PbMoO 4 and PbWO 4 are classified in these groups and have application in high-energy physics. They are characterized by high density, short decay time and high-irradiation damage [ 3 – 5 ]. Photonic emission of PbMoO 4 has only blue color but PbWO 4 has two types of colors: blue (2.8 eV to 2.9 eV) and green (2.3 eV to 2.5 eV) [ 6

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Characterization of deep-level defects in GaNAs/GaAs heterostructures grown by APMOVPE

Experimental The GaNAs epitaxial layers were grown on Si-doped (~10 18 cm −3 ) n-GaAs substrates using an atmospheric pressure metalorganic vapour phase epitaxy (APMOVPE) system, equipped with AIX200 R&D AIXTRON horizontal reactor. Trimethylgallium (TMGa), arsine (AsH 3 : 10 %mixture in H 2 ) and tertiarybutylhydrazine (TBHy) were used as grow precursors and they were transported by passing a high purity H 2 through the bubblers. The undoped heterostructures consisted of a 450 nm thick undoped GaAs buffer layer and of about 300 nm thick GaNAs epitaxial layer. The

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Characterization of magnetic biochar amended with silicon dioxide prepared at high temperature calcination

1 Introduction Calcination process is considered to increase hardness of different composite materials and prevent their breakage [ 1 ]. Generally, high temperature selective environment-based calcination alters material textural and mineralogical characteristics, which for some composite materials improves surface properties and attracts their environmental applications [ 2 ]. However, Mahmood et al. [ 3 ] found reduction of pollutants removal in mixed oxides calcined at higher temperature. Numerous powdered materials have been utilized for toxic metals

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