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https://www.readbyqxmd.com/read/28449539/effect-of-mechanical-stresses-in-rapidly-heated-fe73cu1nb3si16b7-ribbon-arising-during-the-ring-core-formation-on-their-magnetic-properties
#1
Anton Nosenko, Taras Mika, Olexandr Semyrga, Viktor Nosenko
The influence of winding-induced mechanical stresses on the magnetic anisotropy and core loss in toroidal cores made of Fe73Cu1Nb3Si16B7 ribbon is studied. The ribbon for the cores was rapidly pre-heated under tensile stress up to 120 MPa. It was found that magnetic characteristics of the material (magnetic anisotropy energy and the core loss) can be controlled by varying the tensile stress during the preliminary rapid heating of the ribbon. It was shown that with reducing core diameter, the magnetic anisotropy energy and core loss significantly increase...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28449430/poloxamer-surface-modified-trimethyl-chitosan-nanoparticles-for-the-effective-delivery-of-methotrexate-in-osteosarcoma
#2
Shenglong Li, Yuyuan Xiong, Xiaojing Zhang
The present work is an effort to explore the poloxamer-modified trimethyl chitosan (TMC) encapsulated MTX for osteosarcoma treatment in order to improve the therapeutic efficacy and minimize severe toxicity associated with the clinical usage of MTX. The methotrexate-loaded pluronic-chitosan nanoparticles (MTCN) was nanosized and exhibited a controlled release of drug from the carrier system. The MTCN showed higher accumulation in cell cytoplasm region evident by the high red fluorescence indicating its uptake through energy-dependent endocytosis process...
April 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28449252/serum-phosphorus-levels-and-fracture-following-renal-transplantation
#3
Jasna Aleksova, Phillip Wong, William R Mulley, Kay Weng Choy, Robert McLachlan, Peter R Ebeling, Peter G Kerr, Frances Milat
PURPOSE: Increased fracture rates are observed in renal transplant recipients (RTRs) compared with the general population. Risk factors include age, diabetes, dialysis vintage, immunosuppression, and mineral and bone disorders(1). Low serum phosphorus levels occur post-transplantation; however its relationship with fracture risk has not been evaluated. The purpose of this study was to evaluate risk factors for fracture in RTRs at a single tertiary referral centre. METHODS: A retrospective cross-sectional analysis of 146 patients (75M, 71F) who had been referred for dual energy x-ray densitometry (DXA) post-renal transplantation was performed...
April 27, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28449241/autophagy-compensates-impaired-energy-metabolism-in-clpxp-deficient-podospora-anserina-strains-and-extends-healthspan
#4
Laura Knuppertz, Heinz D Osiewacz
The degradation of nonfunctional mitochondrial proteins is of fundamental relevance for maintenance of cellular homeostasis. The heteromeric CLPXP protein complex in the mitochondrial matrix is part of this process. In the fungal aging model Podospora anserina, ablation of CLPXP leads to an increase in healthy lifespan. Here, we report that this counterintuitive increase depends on a functional autophagy machinery. In PaClpXP mutants, autophagy is involved in energy conservation and the compensation of impairments in respiration...
April 27, 2017: Aging Cell
https://www.readbyqxmd.com/read/28448928/potential-environmental-impact-of-bioethanol-production-chain-from-fiber-sorghum-to-be-used-in-passenger-cars
#5
Annachiara Forte, Amalia Zucaro, Massimo Fagnano, Angelo Fierro
A life cycle assessment (LCA) was applied to assess the environmental load of a prospective local bioethanol (EtOH) production system in Southern Italy by using lignocellulosic Fiber sorghum (FS) feedstock. A two steps analysis was carried out considering: (i) a "cradle-to-farm gate" LCA to investigate thoroughly the FS cultivation on hilly marginal land and (ii) a "cradle-to-wheels" system boundary encompassing the environmental pressure of the whole EtOH supply-use chain. Primary data related to lignocellulosic biomass production were combined with experimental feedstock conversion processes through advanced second generation technology...
April 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28448919/mechanochemical-mechanism-of-integrin-clustering-modulated-by-nanoscale-ligand-spacing-and-rigidity-of-extracellular-substrates
#6
Jing Yu, Jianyong Huang, John A Jansen, Chunyang Xiong, X Frank Walboomers
Experimental findings indicate that cell function and behavior such as cell growth, division, migration and differentiation, are subtly regulated via integrin-dependent cell adhesion. Cell adhesion is influenced by nanoscale ligand spacing and rigidity of extracellular substrates, as cell adhesion drops greatly when the ligand spacing is larger than ~60nm, and cell adhesion is stronger on stiff than soft substrates. However, how nanoscale ligand spacing and substrate stiffness jointly affect integrin clustering and hence nascent cell adhesion remains to be elucidated...
April 14, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28448752/temperature-measurements-in-a-capacitive-system-of-deep-loco-regional-hyperthermia
#7
H Sahinbas, M Rosch, M Demiray
Hyperthermia has been shown to be a medically useful procedure applicable for different indications. For the connection between clinical effects and heat, it is important to understand the actual temperatures achieved in the tissue. There are limited temperature data available when using capacitive hyperthermia devices even though this is worldwide the most widespread method for loco-regional heating. Hence, this study examines temperature measurements using capacitive heating. Bioequivalent phantoms were used for the measurements, which, however, do not consider perfusion in live tissue...
April 27, 2017: Electromagnetic Biology and Medicine
https://www.readbyqxmd.com/read/28448543/heterologous-expression-of-a-thermophilic-diacylglycerol-acyltransferase-triggers-triglyceride-accumulation-in-escherichia-coli
#8
Beatriz Lázaro, Juan A Villa, Omar Santín, Matilde Cabezas, Cintia D F Milagre, Fernando de la Cruz, Gabriel Moncalián
Triglycerides (TAGs), the major storage molecules of metabolic energy and source of fatty acids, are produced as single cell oil by some oleogenic microorganisms. However, these microorganisms require strict culture conditions, show low carbon source flexibilities, lack efficient genetic modification tools and in some cases pose safety concerns. TAGs have essential applications such as behaving as a source for added-value fatty acids or giving rise to the production of biodiesel. Hence, new alternative methods are urgently required for obtaining these oils...
2017: PloS One
https://www.readbyqxmd.com/read/28448474/innovative-green-and-novel-strategies-for-the-extraction-of-bioactive-added-value-compounds-from-citrus-wastes-a-review
#9
REVIEW
Predrag Putnik, Danijela Bursać Kovačević, Anet Režek Jambrak, Francisco J Barba, Giancarlo Cravotto, Arianna Binello, Jose Manuel Lorenzo, Avi Shpigelman
Citrus is a major processed crop that results in large quantities of wastes and by-products rich in various bioactive compounds such as pectins, water soluble and insoluble antioxidants and essential oils. While some of those wastes are currently valorised by various technologies (yet most are discarded or used for feed), effective, non-toxic and profitable extraction strategies could further significantly promote the valorisation and provide both increased profits and high quality bioactives. The present review will describe and summarize the latest works concerning novel and greener methods for valorisation of citrus by-products...
April 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28448472/vibro-shock-dynamics-analysis-of-a-tandem-low-frequency-resonator-high-frequency-piezoelectric-energy-harvester
#10
Darius Žižys, Rimvydas Gaidys, Vytautas Ostaševičius, Birutė Narijauskaitė
Frequency up-conversion is a promising technique for energy harvesting in low frequency environments. In this approach, abundantly available environmental motion energy is absorbed by a Low Frequency Resonator (LFR) which transfers it to a high frequency Piezoelectric Vibration Energy Harvester (PVEH) via impact or magnetic coupling. As a result, a decaying alternating output signal is produced, that can later be collected using a battery or be transferred directly to the electric load. The paper reports an impact-coupled frequency up-converting tandem setup with different LFR to PVEH natural frequency ratios and varying contact point location along the length of the harvester...
April 27, 2017: Sensors
https://www.readbyqxmd.com/read/28448464/bayesian-device-free-localization-and-tracking-in-a-binary-rf-sensor-network
#11
Zhenghuan Wang, Heng Liu, Shengxin Xu, Xiangyuan Bu, Jianping An
Received-signal-strength-based (RSS-based) device-free localization (DFL) is a promising technique since it is able to localize the person without attaching any electronic device. This technology requires measuring the RSS of all links in the network constituted by several radio frequency (RF) sensors. It is an energy-intensive task, especially when the RF sensors work in traditional work mode, in which the sensors directly send raw RSS measurements of all links to a base station (BS). The traditional work mode is unfavorable for the power constrained RF sensors because the amount of data delivery increases dramatically as the number of sensors grows...
April 27, 2017: Sensors
https://www.readbyqxmd.com/read/28448434/static-memory-deduplication-for-performance-optimization-in-cloud-computing
#12
Gangyong Jia, Guangjie Han, Hao Wang, Xuan Yang
In a cloud computing environment, the number of virtual machines (VMs) on a single physical server and the number of applications running on each VM are continuously growing. This has led to an enormous increase in the demand of memory capacity and subsequent increase in the energy consumption in the cloud. Lack of enough memory has become a major bottleneck for scalability and performance of virtualization interfaces in cloud computing. To address this problem, memory deduplication techniques which reduce memory demand through page sharing are being adopted...
April 27, 2017: Sensors
https://www.readbyqxmd.com/read/28448413/the-application-of-iodine-quantitative-information-obtained-by-dual-source-dual-energy-computed-tomography-on-chemoradiotherapy-effect-monitoring-for-cervical-cancer-a-preliminary-study
#13
Changqin Jiang, Pin Yang, Junqiang Lei, Jinkui Li, Kun Yan, Feilong Li, Ruifeng Yan, Lichao Xia
OBJECTIVE: The aim of the study is to investigate the potential contribution of the iodine quantitative parameters of dual-phase dual-energy computed tomography (DECT) scanning for chemoradiotherapy (CRT) response monitoring for cervical cancer. METHODS: Patients who were pathologically certified having cervical cancer and intended for concurrent radiotherapy and chemotherapy were prospectively included in our study. Contrast-enhanced DECT scanning was performed before CRT, which was repeated after 1 month of therapy, using a dual-source CT scanner onset...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28448210/body-composition-and-inflammatory-markers-in-pubertal-girls-comparison-between-athletes-and-non-athletic-controls
#14
Jaak Jürimäe, Kristel Võsoberg, Anna-Liisa Tamm, Katre Maasalu, Liina Remmel, Vallo Tillmann
Various inflammation parameters are increased with childhood obesity, but few comparable data are found in lean growing athletes. This study aims to characterize differences in 12 simultaneously measured inflammatory parameters between pubertal rhythmic gymnasts (RG) and untrained controls (UC), and to examine the relationship between body composition and inflammatory markers. Sixty 10-12-year-old girls were divided into RG (n = 30) and UC (n = 30). Fat mass (FM) and fat free mass (FFM) were measured by dual-energy X-ray absorptiometry...
April 27, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28448088/individually-tailored-dietary-counseling-among-old-home-care-clients-effects-on-nutritional-status
#15
S Pölönen, M Tiihonen, S Hartikainen, I Nykänen
OBJECTIVE: To evaluate the effect of individually tailored dietary counseling on nutritional status among home care clients aged 75 years or older. DESIGN: Non-randomised controlled study. SETTING AND PARTICIPANTS: The study sample consisted of 224 home care clients (≥ 75 years) (intervention group, n = 127; control group, n = 100) who were at protein-energy malnutrition (PEM) or risk of PEM (MNA score <24 and plasma albumin <35 g/L)...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28447693/modulating-the-electronic-structure-of-lanthanum-manganite-by-ruthenium-doping-for-enhanced-photocatalytic-water-oxidation
#16
Anindya Sundar Patra, Gaurangi Gogoi, Ranjan Kumar Sahu, Mohammad Qureshi
To the best of our knowledge this is the first report in which ruthenium doped polycrystalline lanthanum manganite, LaMn1-xRuxO3 (x = 0.0-0.4), having high efficacy for oxygen production from water without the use of any sacrificial reagent or co-catalyst and as an efficient photocatalyst for dye degradation is reported. Ruthenium doping alters the crystal structure of the parent LaMnO3 (LMO) due to the induced chemical pressure of the larger Ru(4+) ion, which facilitates a bond angle of 180° in the Mn(3+)-O-Mn(4+) plane resulting in the easy extraction of a photo-generated charge carrier population leading to enhanced photocatalytic activity...
April 27, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28447665/creation-of-energetic-biothermite-inks-using-ferritin-liquid-protein
#17
Joseph M Slocik, Ruel McKenzie, Patrick B Dennis, Rajesh R Naik
Energetic liquids function mainly as fuels due to low energy densities and slow combustion kinetics. Consequently, these properties can be significantly increased through the addition of metal nanomaterials such as aluminium. Unfortunately, nanoparticle additives are restricted to low mass fractions in liquids because of increased viscosities and severe particle agglomeration. Nanoscale protein ionic liquids represent multifunctional solvent systems that are well suited to overcoming low mass fractions of nanoparticles, producing stable nanoparticle dispersions and simultaneously offering a source of oxidizing agents for combustion of reactive nanomaterials...
April 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28447613/guilty-repair-sustains-cooperation-angry-retaliation-destroys-it
#18
Anya Skatova, Alexa Spence, Caroline Leygue, Eamonn Ferguson
Sustained cooperative social interactions are key to successful outcomes in many real-world contexts (e.g., climate change and energy conservation). We explore the self-regulatory roles of anger and guilt, as well as prosocial or selfish social preferences in a repeated social dilemma game framed around shared electricity use at home. We explore the proposal that for sustained cooperation, guilty repair needs to override angry retaliation. We show that anger is damaging to cooperation as it leads to retaliation and an increase of defection, while, through guilt, cooperation is repaired resulting in higher levels of cooperation...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28447585/metabolic-profiles-of-individuals-switched-to-second-line-antiretroviral-therapy-after-failing-standard-first-line-therapy-for-treatment-of-hiv-1-infection-in-a-randomized-controlled-trial
#19
Amanda H Yao, Cecilia L Moore, Poh Lian Lim, Jean-Michel Molina, Juan Sierra Madero, Stephen Kerr, Paddy Wg Mallon, Sean Emery, David A Cooper, Mark A Boyd
BACKGROUND: To investigate metabolic changes associated with second-line antiretroviral therapy (ART) following virological failure of first-line ART. METHODS: SECOND-LINE was an open-label randomized controlled trial. Participants were randomized 1:1 to receive ritonavir-boosted lopinavir (LPV/r) with 2-3 nucleoside/nucleotide reverse transcriptase inhibitors (N(t)RTI-group) or raltegravir (RAL-group) Two hundred and ten participants had a dual energy X-ray absorptiometry (DXA)-scan at baseline, week 48 and 96...
April 27, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28447450/band-bending-of-ga-polar-gan-interfaced-with-al2o3-through-ultraviolet-ozone-treatment
#20
Kwangeun Kim, Jae Ha Ryu, Jisoo Kim, Sang June Cho, Dong Liu, Jeongpil Park, In-Kyu Lee, Baxter Moody, Weidong Zhou, John Albrecht, Zhenqiang Ma
Understanding the band bending at the interface of GaN/dielectric under different surface treatment conditions is critically important for device design, device performance, and device reliability. The effects of ultraviolet/ozone (UV/O3) treatment of the GaN surface on the energy band bending of atomic-layer-deposition (ALD) Al2O3 coated Ga-polar GaN were studied. The UV/O3 treatment and post-ALD anneal can be used to effectively vary the band bending, valence band offset, conduction band offset, and interface dipole at the Al2O3/GaN interfaces...
April 27, 2017: ACS Applied Materials & Interfaces
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