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https://www.readbyqxmd.com/read/28431172/quantitative-analysis-of-li-distributions-in-battery-material-li1-xfepo4-using-fe-m2-3-edge-and-valence-electron-energy-loss-spectra
#1
Shunsuke Kobayashi, Craig A J Fisher, Akihide Kuwabara, Yoshio Ukyo, Yuichi Ikuhara
The spatial distribution of Li ions in a lithium iron phosphate (Li1-xFePO4) single crystal after chemical delithiation is quantitatively investigated using Fe M2,3-edge and valence electron energy loss (EEL) spectroscopy techniques. Li contents between those of end-member compositions LiFePO4 and FePO4 are found to correspond to reproducible changes in Fe M2,3-edge and valence EEL spectra across an interface between LiFePO4 and FePO4 regions. Quantitative analysis of these changes is used to estimate the local valence states of Fe ions, from which the Li concentration in the intermediate phase can be deduced...
April 18, 2017: Microscopy
https://www.readbyqxmd.com/read/28429299/participation-of-c-h-protons-in-the-dissociation-of-a-proton-deficient-dipeptide
#2
Damodar Koirala, Sabyasachy Mistry, Paul G Wenthold
The dissociation of anionic dipeptides Phe*Gly and GlyPhe*, where Phe* refers to sulfonated phenyl alanine, has been investigated by using ion trap mass spectrometry. The dipeptides undergo collision-induced dissociation (CID) to give the same products, indicating that they rearrange to a common structure before dissociation. The rearrangement does not occur with the dipeptide methyl esters. The structures of the b2 ions were investigated to determine the effect that having a remote, anionic site has on product formation...
April 20, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28429025/nanoscale-controlled-li-insertion-reaction-induced-by-scanning-electron-beam-irradiation-in-a-li4ti5o12-electrode-material-for-lithium-ion-batteries
#3
Mitsunori Kitta, Masanori Kohyama
The development of a nanoscale battery reaction in an electrode material associated with in situ microscopic observation is significant to an understanding of the solid-state mechanism of a battery reaction. With a Li4Ti5O12 (LTO) crystal as the negative electrode of a Li-ion battery (LIB), we show that a nanoscale-controlled Li-insertion reaction can be produced by electron beam irradiation with scanning transmission electron microscopy (STEM). A selected area in a Li2O-coated thin LTO crystal was irradiated by the electron probe of STEM with a high beam intensity of 2...
April 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28428364/role-of-oestrogen-receptor-signaling-in-skeletal-response-to-leptin-in-female-ob-ob-mice
#4
Russell T Turner, Kenneth A Philbrick, Amida Kuah, Adam J Branscum, Urszula T Iwaniec
Leptin, critical in regulation of energy metabolism, is also important for normal bone growth, maturation and turnover. Compared to wild type (WT) mice, bone mass is lower in leptin-deficient ob/ob mice; osteopenia in growing ob/ob mice is due to decreased bone accrual, and is associated with reduced longitudinal bone growth, impaired cancellous bone maturation and increased marrow adipose tissue (MAT). However, leptin deficiency also results in gonadal dysfunction, disrupting production of gonadal hormones which regulate bone growth and turnover...
April 20, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28428010/a-strategy-of-faster-movements-used-by-elderly-humans-to-lift-objects-of-increasing-weight-in-ecological-context
#5
Thomas Hoellinger, Joseph McIntyre, Lena Jami, Sylvain Hanneton, Guy Cheron, Agnes Roby-Brami
It is not known whether, during the course of ageing, changes occur in the motor strategies used by the CNS for lifting objects of different weights. Here, we analysed the kinematics of object-lifting in two different healthy groups (young and elderly people) plus one well known deafferented patient (GL). The task was to reach and lift onto a shelf an opaque cylindrical object with changing weight. The movements of the hand and object were recorded with electromagnetic sensors. In an ecological context (i.e...
April 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28427658/influence-of-ultrasound-assisted-extraction-on-the-pyrolysis-characteristics-and-kinetic-parameters-of-eucalyptus
#6
Zhenyu Wang, Zhengbin He, Zijian Zhao, Songlin Yi, Jun Mu
In this study, the influence of ultrasound-assisted extraction on eucalyptus samples with special focus on pyrolysis characteristics and kinetic parameters was explored. Ultrasound and Soxhlet extraction were used to pretreat samples respectively, then samples were assayed by component analysis, TG-FTIR, and kinetic analysis. Ultrasound-assisted extraction did change the physiochemical characteristics of eucalyptus samples, particularly in regards to the quantity of extractives obtained. In TG and DTG curves, ultrasound-extracted samples reflected lower residual weight ratio (17...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427632/ultrasonic-treatment-of-cofe2o4-b2o3-sio2-as-a-new-hybrid-magnetic-composite-nanostructure-and-catalytic-application-in-the-synthesis-of-dihydroquinazolinones
#7
Ali Maleki, Morteza Aghaei, Hamid Reza Hafizi-Atabak, Mohammad Ferdowsi
New hybrid magnetic composite nanostructure are prepared via ultrasonic treatment by glass-ceramic method, characterized by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), energy-dispersive X-ray (EDX), element distribution image (EDX mapping), thermal gravimetric analysis (TGA)/differential thermal analysis (DTA) and N2 adsorption-desorption by Brunauer-Emmett-Teller (BET) analyses. Then, the catalytic activity of the prepared CoFe2O4@B2O3-SiO2 nanoparticles was tested in the synthesis of 2-substituted-3-(phenylamino)-dihydroquinazolin-4(1H)-ones in deep eutectic solvent (DES) based on choline chloride as an eco-friendly and recyclable media...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427343/loss-of-pericyte-smoothened-activity-in-mice-with-genetic-deficiency-of-leptin
#8
Guanhua Xie, Marzena Swiderska-Syn, Mark L Jewell, Mariana Verdelho Machado, Gregory A Michelotti, Richard T Premont, Anna Mae Diehl
BACKGROUND: Obesity is associated with multiple diseases, but it is unclear how obesity promotes progressive tissue damage. Recovery from injury requires repair, an energy-expensive process that is coupled to energy availability at the cellular level. The satiety factor, leptin, is a key component of the sensor that matches cellular energy utilization to available energy supplies. Leptin deficiency signals energy depletion, whereas activating the Hedgehog pathway drives energy-consuming activities...
April 20, 2017: BMC Cell Biology
https://www.readbyqxmd.com/read/28427044/on-the-reverse-micelle-effect-in-liquid-scintillation-counting
#9
Youcef Nedjadi, Jean-Pascal Laedermann, François Bochud, Claude Bailat
This work looks into the tracks of electrons in nanoemulsive scintillating media using the Monte Carlo Geant4-DNA code which simulates event-by-event interactions of electrons in liquid water down to the eV, without resorting to the condensed history method. It demonstrates that the average number of micelles in which electrons deposit energy is quite large, increasing with their emission energy, decreasing with micelle size, and rising with micelle concentration. The probability of an electron ending its track in a micelle is found to be rather large and micelle size-dependent below 1keV, and approximating the aqueous fraction at higher energies...
April 12, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28426992/factors-affecting-sound-energy-absorbance-in-acute-otitis-media-model-of-chinchilla
#10
Xiying Guan, Thomas W Seale, Rong Z Gan
Acute otitis media (AOM) is a rapid-onset infection of the middle ear which results in middle ear pressure (MEP), middle ear effusion (MEE), and structural changes in middle ear tissues. Previous studies from our laboratory have identified that MEP, MEE, and middle ear structural changes are three factors affecting tympanic membrane (TM) mobility and hearing levels (Guan et al., 2014, 2013). Sound energy reflectance or absorbance (EA) is a diagnostic tool increasingly used in clinical settings for the identification of middle ear diseases...
April 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28426701/exploratory-study-on-the-effect-of-osteoactivin-on-muscle-regeneration-in-a-rat-volumetric-muscle-loss-model
#11
Jinjin Ma, Andrew R Baker, Anthony Calabro, Kathleen A Derwin
Wounds causing extensive injury loss of muscle, also known as volumetric muscle loss (VML), are frequently associated with high-energy civilian trauma and combat-related extremity injuries. Currently, no effective clinical therapy is available for promoting de novo muscle tissue regeneration to restore muscle function following VML. Recent studies have shown evidence that osteoactivin (OA), a transmembrane glycoprotein, has the ability to prevent skeletal muscle atrophy in response to denervation. Therefore the objective of this study is to investigate the potential regenerative effect of OA embedded and delivered via a cross-linked gelatin hydrogel within a volumetric tibialis anterior muscle defect in a rat model...
2017: PloS One
https://www.readbyqxmd.com/read/28424674/global-fecal-and-plasma-metabolic-dynamics-related-to-helicobacter-pylori-eradication
#12
Theresa Wan-Chen Yap, Alex Hwong-Ruey Leow, Ahmad Najib Azmi, Damien L Callahan, Guillermo I Perez-Perez, Mun-Fai Loke, Khean-Lee Goh, Jamuna Vadivelu
Background:Helicobacter pylori colonizes the gastric mucosa of more than half of the world's population. There is increasing evidence H. pylori protects against the development of obesity and childhood asthma/allergies in which the development of these diseases coincide with transient dysbiosis. However, the mechanism underlying the association of H. pylori eradication with human metabolic and immunological disorders is not well-established. In this study, we aimed to investigate the local and systemic effects of H...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28424470/atom-size-electron-vortex-beams-with-selectable-orbital-angular-momentum
#13
Darius Pohl, Sebastian Schneider, Paul Zeiger, Ján Rusz, Peter Tiemeijer, Sorin Lazar, Kornelius Nielsch, Bernd Rellinghaus
The decreasing size of modern functional magnetic materials and devices cause a steadily increasing demand for high resolution quantitative magnetic characterization. Transmission electron microscopy (TEM) based measurements of the electron energy-loss magnetic chiral dichroism (EMCD) may serve as the needed experimental tool. To this end, we present a reliable and robust electron-optical setup that generates and controls user-selectable single state electron vortex beams with defined orbital angular momenta...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424263/the-kielin-chordin-like-protein-kcp-attenuates-high-fat-diet-induced-obesity-and-metabolic-syndrome-in-mice
#14
Abdul Soofi, Katherine I Wolf, Margo P Emont, Nathan Qi, Gabriel Martinez-Santibanez, Edward Grimley, Wesam Ostwani, Gregory R Dressler
Obesity and its associated complications, such as insulin resistance and non-alcoholic fatty liver disease, are reaching epidemic proportions. In mice, the TGF-beta superfamily is implicated in the regulation of white and brown adipose tissue differentiation. The Kielin/chordin-like Protein (KCP) is a secreted regulator of the TGF-beta superfamily pathways that can inhibit both TGF-beta and activin signals while enhancing bone morphogenetic protein (BMP) signaling. However, KCP's effects on metabolism and obesity have not been studied in animal models...
April 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28423931/comparative-effectiveness-of-two-walking-interventions-on-participation-step-counts-and-health
#15
Aaron Smith-McLallen, Debbie Heller, Kristin Vernisi, Diana Gulick, Samantha Cruz, Richard L Snyder
PURPOSE: To (1) compare the effects of two worksite-based walking interventions on employee participation rates; (2) compare average daily step counts between conditions, and; (3) examine the effects of increases in average daily step counts on biometric and psychologic outcomes. DESIGN: We conducted a cluster-randomized trial in which six employer groups were randomly selected and randomly assigned to condition. SETTING: Four manufacturing worksites and two office-based worksite served as the setting...
March 2017: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/28423710/phospholipase-c%C3%AE-1-suppresses-cell-migration-and-invasion-of-breast-cancer-cells-by-modulating-kif3a-mediated-erk1-2-%C3%AE-catenin-mmp7-signalling
#16
Qing Shao, Xinrong Luo, Dejuan Yang, Can Wang, Qiao Cheng, Tingxiu Xiang, Guosheng Ren
Phospholipase C δ1 (PLCD1) encodes an enzyme involved in energy metabolism, calcium homeostasis and intracellular movement. It is located at 3p22 in a region that is frequently deleted in multiple cancers, and the PLCD1 enzyme is a potential tumour suppressor in breast cancer that inhibits matrix metalloprotease (MMP) 7, but the detailed mechanism remains elusive. In this study, we found that PLCD1 was downregulated in breast cancers, and the gain-or-loss functional assay revealed that PLCD1 inhibited cell migration and invasion in vitro via the ERK1/2/β-catenin/MMP7 signalling pathway...
March 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422159/spastic-paraplegia-linked-phospholipase-papla1-is-necessary-for-development-reproduction-and-energy-metabolism-in-drosophila
#17
Martina Gáliková, Peter Klepsatel, Judith Münch, Ronald P Kühnlein
The human PAPLA1 phospholipase family is associated with hereditary spastic paraplegia (HSP), a neurodegenerative syndrome characterized by progressive spasticity and weakness of the lower limbs. Taking advantage of a new Drosophila PAPLA1 mutant, we describe here novel functions of this phospholipase family in fly development, reproduction, and energy metabolism. Loss of Drosophila PAPLA1 reduces egg hatchability, pre-adult viability, developmental speed, and impairs reproductive functions of both males and females...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28422064/dried-plums-prunes-and-bone-health-a-comprehensive-review
#18
REVIEW
Taylor C Wallace
The 2015-2020 Dietary Guidelines for Americans advocate for increasing fruit intake and replacing energy-dense foods with those that are nutrient-dense. Nutrition across the lifespan is pivotal for the healthy development and maintenance of bone. The National Osteoporosis Foundation estimates that over half of Americans age 50+ have either osteoporosis or low bone mass. Dried plums, also commonly referred to as prunes, have a unique nutrient and dietary bioactive profile and are suggested to exert beneficial effects on bone...
April 19, 2017: Nutrients
https://www.readbyqxmd.com/read/28421192/exercise-and-protein-intake-a-synergistic-approach-against-sarcopenia
#19
REVIEW
Anna Maria Martone, Emanuele Marzetti, Riccardo Calvani, Anna Picca, Matteo Tosato, Luca Santoro, Angela Di Giorgio, Antonio Nesci, Alex Sisto, Angelo Santoliquido, Francesco Landi
Sarcopenia, the age-dependent loss of muscle mass and function/strength, is increasingly recognized as a major risk factor for adverse outcomes in frail older people. As such, the skeletal muscle is a relevant target for interventions aimed at preventing or postponing the occurrence of negative health-related events in late life. The association among physical inactivity, insufficient intake of energy and protein, and poor muscle health in older adults suggests that physical exercise and targeted nutritional supplementation may offer substantial therapeutic gain against sarcopenia and its negative correlates...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28420112/the-association-between-breakfast-skipping-and-body-weight-nutrient-intake-and-metabolic-measures-among-participants-with-metabolic-syndrome
#20
Lijuan Zhang, Lorraine S Cordeiro, Jinghua Liu, Yunsheng Ma
The effect of skipping breakfast on health, especially in adults, remains a controversial topic. A secondary data analysis was conducted to examine associations between breakfast eating patterns and weight loss, nutrient intake, and metabolic parameters among participants with metabolic syndrome (MetS) (n = 240). Three randomly selected 24-h dietary recalls were collected from each participant at baseline and at the one-year visit. Skipped breakfast was seen in 32.9% at baseline and in 17.4% at the one-year visit, respectively...
April 14, 2017: Nutrients
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