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https://www.readbyqxmd.com/read/28338006/high-curie-temperature-and-enhanced-magnetoelectric-properties-of-the-laminated-li0-058-na0-535k0-48-0-942nbo3-co0-6-zn0-4fe1-7mn0-3o4-composites
#1
Haibo Yang, Jintao Zhang, Ying Lin, Tong Wang
Laminated magnetoelectric composites of Li0.058(Na0.535K0.48)0.942NbO3 (LKNN)/Co0.6Zn0.4Fe1.7Mn0.3O4 (CZFM) prepared by the conventional solid-state sintering method were investigated for their dielectric, magnetic, and magnetoelectric properties. The microstructure of the laminated composites indicates that the LKNN phase and CZFM phase can coexist in the composites. Compared with the particulate magnetoelectric composites, the laminated composites have better piezoelectric and magnetoelectric properties due to their higher resistances and lower leakage currents...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335980/paper-polymer-composite-devices-with-minimal-fluorescence-background
#2
Chang-Ming Wang, Chong-You Chen, Wei-Ssu Liao
Polymer film incorporated paper-based devices show advantages in simplicity and rugged backing. However, their applications are restricted by the high fluorescence background interference of conventional laminating pouches. Herein, we report a straightforward approach for minimal fluorescence background device fabrication, in which filter paper was shaped and laminated in between two biaxially oriented polypropylene (OPP) and polyvinyl butyral (PVB) composite films. This composite film provides mechanical strength for enhanced device durability, protection from environmental contamination, and prevents reagent degradation...
April 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28334682/phytochemical-induced-nucleolar-stress-results-in-the-inhibition-of-breast-cancer-cell-proliferation
#3
Anna Lewinska, Diana Bednarz, Jagoda Adamczyk-Grochala, Maciej Wnuk
The nucleolus is a stress sensor and compromised nucleolar activity may be considered as an attractive anticancer strategy. In the present study, the effects of three plant-derived natural compounds, i.e., sulforaphane (SFN), ursolic acid (UA) and betulinic acid (BA) on nucleolar state were investigated in breast cancer cell lines of different receptor status, namely MCF-7, MDA-MB-231 and SK-BR-3 cells. Cytostatic action of phytochemicals against breast cancer cells was observed at low micromolar concentration window (5-20µM) and mediated by elevated p21 levels, and cell proliferation of SFN-, UA- and BA-treated normal human mammary epithelial cells (HMEC) was unaffected...
March 14, 2017: Redox Biology
https://www.readbyqxmd.com/read/28333448/role-of-oxygen-functionalities-in-graphene-oxide-architectural-laminates-goal-sub-nanometer-spacing-and-water-transport
#4
Carlo Alberto Amadei, Andrea Montessori, Julian P Kadow, Sauro Succi, Chad David Vecitis
Active research in nanotechnology contemplates the use of nanomaterials for environmental engineering applications. However, a primary challenge is understanding the effects of nanomaterial properties on industrial device performance and translating unique nanoscale properties to the macroscale. One emerging example is graphene oxide (GO) membranes for separation processes. Thus, here we investigate how individual GO properties, in particular the GO chemistry, can impact GO membrane characteristics and water permeability...
March 23, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28333438/nuclear-membrane-targeted-gold-nanoparticles-inhibit-cancer-cell-migration-and-invasion
#5
Moustafa R K Ali, Yue Wu, Deepraj Ghosh, Brian H Do, Kuangcai Chen, Michelle R Dawson, Ning Fang, Todd A Sulchek, Mostafa A El-Sayed
Most cancer patients die from metastasis. Recent studies have shown that gold nanoparticles (AuNPs) can slow down the migration/invasion speed of cancer cells and suppress metastasis. Since nuclear stiffness of the cell largely decreases cell migration, our hypothesis is that targeting AuNPs to the cell nucleus region could enhance nuclear stiffness, and therefore inhibit cell migration and invasion. Our results showed that upon nuclear targeting of AuNPs, the ovarian cancer cell motilities decrease significantly, compared with non-targeted AuNPs...
March 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28333371/structure-dependent-behaviours-of-skin-layers-studied-by-atomic-force-microscopy
#6
A C Chang, B H Liu, P L Shao, J D Liao
The multilayer skin provides the physical resistance and strength against the environmental attacks, and consequently plays a significant role in maintaining the mammalian health. Currently, optical microscopy (OM) is the most common method for the research related to skin tissues while with the drawbacks including the possibility of changing the native morphology of the sample with the addition of the chemical or immunological staining and the restricted resolution of images for the direct observation of the tissue structures...
March 23, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28332443/migration-assessment-and-the-threshold-of-toxicological-concern-applied-to-the-safe-design-of-an-acrylic-adhesive-for-food-contact-laminates
#7
Elena Canellas, Paula Vera, Cristina Nerín
Adhesives are widely used in food packaging. The suitability of an acrylic adhesive used on food packaging has been studied. Six potential migrants have been identified using GC-MS and UPLC-QTOF. Five compounds were intentionally added (2-butoxyethanol and 2,4,7,9-tetramethyl-5-decyne-4,7-diol (TMDD) and TMDD ethoxylates). Moreover, one of the compounds identified as 2-(12-(methacryloyloxy)dodecyl)malonic acid was a non-intenionally added substance (NIAS), that could be a methyl metacrylate derivative. This has demonstrated that the identification of compounds in food packaging is an essential step when the risk evaluation of the package is being studied...
March 23, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28332069/dairy-cows-change-locomotion-score-and-sensitivity-to-pain-with-trimming-and-infectious-or-non-infectious-lesions
#8
L T Passos, E A da Cruz, V Fischer, G C da Porciuncula, D Werncke, A G C Dalto, M T Stumpf, E F Vizzotto, I D B da Silveira
Lameness can negatively affect production, but there is still controversy about the perception of pain in dairy cows. This study aimed to verify the effects of hoof affections in dairy cows on locomotion score, physiological attributes, pressure nociceptive threshold, and thermographic variables, as well as assess improvement on these variables after corrective trimming and treatment. Thirty-four lame lactating cows were gait-scored, and all cows with locomotion score ≥4 were retained for this study 1 day before trimming...
March 22, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28331790/ultrathin-fluidic-laminates-for-large-area-fa%C3%A3-ade-integration-and-smart-windows
#9
Benjamin P V Heiz, Zhiwen Pan, Gerhard Lautenschläger, Christin Sirtl, Matthias Kraus, Lothar Wondraczek
Buildings represent more than 40% of Europe's energy demands and about one third of its CO2 emissions. Energy efficient buildings and, in particular, building skins have therefore been among the key priorities of international research agendas. Here, glass-glass fluidic devices are presented for large-area integration with adaptive façades and smart windows. These devices enable harnessing and dedicated control of various liquids for added functionality in the building envelope. Combining a microstructured glass pane, a thin cover sheet with tailored mechanical performance, and a liquid for heat storage and transport, a flat-panel laminate is generated with thickness adapted to a single glass sheet in conventional windows...
March 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28329435/face-shield-design-against-blast-induced-head-injuries
#10
Long Bin Tan, Kwong Ming Tse, Yuan Hong Tan, Mohamad Ali Bin Sapingi, Vincent Beng Chye Tan, Heow Pueh Lee
Blast-induced traumatic brain injury (TBI) has been on the rise in recent years due to the increasing use of improvised explosive devices (IEDs) in conflict zones. Our study investigates the response of a helmeted human head subjected to a blast of 1 atm peak overpressure, for cases with and without a standard polycarbonate (PC) face shield and for face shields comprising of composite PC and aerogel materials and with lateral edge extension. The novel introduction of aerogel into the laminate face shield is explored and its wave-structure interaction mechanics and performance in blast mitigation is analysed...
March 22, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28323483/taphonomy-of-microbial-biosignatures-in-spring-deposits-a-comparison-of-modern-quaternary-and-jurassic-examples
#11
Sally L Potter-McIntyre, Jason Williams, Charity Phillips-Lander, Laura O'Connell
On Earth, microorganisms commonly enhance mineral precipitation and mediate mineralogical and chemical compositions of resulting deposits, particularly at spring systems. However, preservation of any type of microbial fossil or chemical or textural biosignature depends on the degree of alteration during diagenesis and factors such as exposure to diagenetic fluids. Little is known about the transformation of biosignatures during diagenesis over geologic time. Ten Mile Graben, Utah, USA, hosts a cold spring system that is an exceptional site for evaluation of diagenetic alteration of biosignatures because of the presence of modern springs with actively precipitating microbial mats and a series of progressively older tufa terraces (<400 ka) preserved in the area from the same spring system...
March 2017: Astrobiology
https://www.readbyqxmd.com/read/28300030/hemispheric-polymicrogyria-and-neonatal-seizures-a-potentially-life-threatening-combination
#12
Paula M Brna, A Simon Harvey, Richard J Leventer
Polymicrogyria (PMG) is a heterogeneous malformation of cortical development characterized by excessive gyration and abnormal cortical lamination. Typically, bilateral forms have more severe developmental delay and early-onset epilepsy, but the full spectrum of severity remains ill-defined. We report two cases of right hemispheric PMG and neonatal-onset, drug-resistant seizures culminating in early death. Case 1 began having seizures on Day 1 of life that intensified in severity and proved resistant to numerous antiepileptic drugs...
March 14, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28299706/microfluidic-pouch-chips-for-immunoassays-and-nucleic-acid-amplification-tests
#13
Michael G Mauk, Changchun Liu, Xianbo Qiu, Dafeng Chen, Jinzhao Song, Haim H Bau
Microfluidic cassettes ("chips") for processing and analysis of clinical specimens and other sample types facilitate point-of-care (POC) immunoassays and nucleic acid based amplification tests. These single-use test chips can be self-contained and made amenable to autonomous operation-reducing or eliminating supporting instrumentation-by incorporating laminated, pliable "pouch" and membrane structures for fluid storage, pumping, mixing, and flow control. Materials and methods for integrating flexible pouch compartments and diaphragm valves into hard plastic (e...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28299614/lamin-a-c-cardiomyopathies-current-understanding-and-novel-treatment-strategies
#14
REVIEW
Xi Wang, Allyson Zabell, Wonshill Koh, W H Wilson Tang
Dilated cardiomyopathy (DCM) is the third leading cause of heart failure in the USA. A major gene associated with DCM with cardiac conduction system disease is lamin A/C (LMNA) gene. Lamins are type V filaments that serve a variety of roles, including nuclear structure support, DNA repair, cell signaling pathway mediation, and chromatin organization. In 1999, LMNA was found responsible for Emery-Dreifuss muscular dystrophy (EDMD) and, since then, has been found in association with a wide spectrum of diseases termed laminopathies, including LMNA cardiomyopathy...
March 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28294881/-dilatation-of-the-chambers-of-the-heart-caused-by-a-mutation-of-lamin-gene-lmna
#15
T G Vaikhanskaya, L N Sivitskaya, N G Danilenko, I V Sidorenko, T V Kurushka, O G Davydenko
Dilated cardiomyopathy (DCM) caused by mutations in the lamin A/C (LMNA) gene is often associated with conduction disorders, cardiac arrhythmias and various skeletal muscle abnormalities. We present here a case of severe form of DCM with overlapping phenotype.
May 2016: Kardiologiia
https://www.readbyqxmd.com/read/28284905/embryonic-mosaic-deletion-of-app-results-in-displaced-reelin-expressing-cells-in-the-cerebral-cortex
#16
D G Callahan, W M Taylor, M Tilearcio, T Cavanaugh, D J Selkoe, T L Young-Pearse
It is widely accepted that amyloid precursor protein (APP) plays a central role in the pathogenesis of Alzheimer's disease. In addition, APP has been proposed to have functions in numerous biological processes including neuronal proliferation, differentiation, migration, axon guidance, and neurite outgrowth, as well as in synapse formation and function. However, germline knockout of APP yields relatively subtle phenotypes, and brain development appears grossly normal. This is thought to be due in part to functional compensation by APP family members and other type I transmembrane proteins...
March 8, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28283545/macroh2a-histone-variants-maintain-nuclear-organization-and-heterochromatin-architecture
#17
Julien Douet, David Corujo, Roberto Malinverni, Justine Renauld, Viola Sansoni, Melanija Posavec Marjanović, Neus Cantari'o, Vanesa Valero, Fabien Mongelard, Philippe Bouvet, Axel Imhof, Marc Thiry, Marcus Buschbeck
Genetic loss-of-function studies in development, cancer and somatic cell reprogramming have suggested that the group of macroH2A histone variants might function through stabilizing the differentiated state by a yet unknown mechanism. Here, we present results demonstrating that macroH2A variants have a major function in maintaining nuclear organization and heterochromatin architecture. Specifically, we find that a substantial amount of macroH2A is associated with heterochromatic repeat sequences. We further identify macroH2A on sites of interstitial heterochromatin decorated by H3K9me3...
March 10, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28283083/a-novel-model-to-assess-lamellar-signaling-relevant-to-preferential-weight-bearing-in-the-horse
#18
A K Gardner, A W van Eps, M R Watts, T A Burns, J K Belknap
Supporting limb laminitis (SLL) is a devastating sequela to severe unilateral lameness in equine patients. The manifestation of SLL, which usually only affects one limb, is unpredictable and the etiology is unknown. A novel, non-painful preferential weight bearing model designed to mimic the effects of severe unilateral forelimb lameness was developed to assess lamellar signaling events in the supporting limb (SL). A custom v-shaped insert was attached to the shoe of one forelimb to prevent normal weight bearing and redistribute weight onto the SL...
March 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28280760/the-shear-bond-strength-of-porcelain-laminate-to-prepared-and-unprepared-anterior-teeth
#19
Ali Asghar Alavi, Zeinab Behroozi, Farid Nik Eghbal
STATEMENT OF THE PROBLEM: Porcelain laminate veneer is an esthetic restoration used as an alternative to full veneer crowns and requires minimal tooth preparation. In restoration with porcelain laminate veneers, both the longevity of the laminate and conservation of the sound tooth structure are imperative. PURPOSE: The present study aimed to investigate the shear bond strength of porcelain laminates to prepared- and unprepared- anterior teeth in order to compare their longevity and success rate...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28280757/evaluation-of-the-effect-of-porcelain-laminate-thickness-on-degree-of-conversion-of-light-cure-and-dual-cure-resin-cements-using-ftir
#20
Maryam Hoorizad Ganjkar, Haleh Heshmat, Reza Hassan Ahangari
STATEMENT OF THE PROBLEM: Increasing the thickness of the veneering porcelain may affect the polymerization of resin cements. Incomplete polymerization of resin cements can lead to compromised quality of restoration and decrease the longevity of indirect restorations. PURPOSE: This study sought to assess the effect of IPS Empress porcelain thickness on the degree of conversion of light-cure and dual-cure resin cements using Fourier transform infrared spectroscopy...
March 2017: Journal of Dentistry
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