Age, Vascular Health, and Alzheimer's disease Biomarkers in an Elderly Sample

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Source: Annals of Neurology - Category: Neurology Authors: Tags: Research Article Source Type: research

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Publication date: Available online 21 February 2020Source: Polymer TestingAuthor(s): P. Madhu, M.R. Sanjay, Mohammad Jawaid, Suchart Siengchin, Anish Khan, Catalin Iulian PruncuAbstractThis research is focused to fundamentally understand the benefits of using Agave Americana C. plant as potential reinforcement in polymeric composites. The fibers were extracted from the external part of the bark of the plant, which grows worldwide in pastures, grasslands, open woodlands, coastal and riparian zones. In order to use the natural fiber as reinforcement it is paramount important to probe their chemical composition, microstructur...
Source: Polymer Testing - Category: Chemistry Source Type: research
Publication date: Available online 20 February 2020Source: PolymerAuthor(s): Akihiko Toda, Ken Taguchi, Koji Nozaki, Xinchao Guan, Wenbing Hu, Yoshitomo Furushima, Christoph SchickAbstractThe crystallization and melting behaviors of poly(butylene terephthalate) (PBT) and poly(ethylene terephthalate) (PET) were examined by Hoffman-Weeks (H–W), Gibbs-Thomson (G-T), and thermal Gibbs-Thomson (t-G-T) plots constructed by using fast-scan calorimetry and small-angle X-ray scattering. With PBT and PET, neither an H–W nor a G-T plot could be utilized for the determination of the equilibrium melting point (TM0) of chain...
Source: Polymer - Category: Chemistry Source Type: research
Publication date: June 2020Source: Microchemical Journal, Volume 155Author(s): Karolina Nowak, Marcin Zawadzki, Tomasz JurekAbstractPostmortem diagnosis of hyperglycaemia is a challenge in forensic medicine. Glycated haemoglobin (HbA1c) is considered one of the markers providing an alternative to postmortem determinations of glucose concentration. On the other hand, glycated albumin (GA) may be determined in cases of difficulty in determining HbA1c.The aim of this study was to implement and evaluate the usefulness of methods enabling determination of HbA1c an GA in postmortem material (HbA1c–peripheral blood, GA&ndas...
Source: Microchemical Journal - Category: Chemistry Source Type: research
Publication date: June 2020Source: Microchemical Journal, Volume 155Author(s): Nabilah Al-Ansi, Abdulwahab Salah, Mbage Bawa, Salah Adlat, Iram Yasmin, Ayman Abdallah, Bin QiAbstractIn this work, three-dimensional nitrogen-doped porous graphene aerogel (NPGA) was easily synthesized via one-step hydrothermal reduction by mixing graphene oxide (GO) with p-phenylenediamine (PPD) and ammonia solution and then followed by freeze-dried. The NPGA sample was studied by different techniques such as SEM, TEM, nitrogen adsorption-desorption isotherms, XRD, XPS, and electrochemical measurements. NPGA composite exhibits a microporous w...
Source: Microchemical Journal - Category: Chemistry Source Type: research
Publication date: June 2020Source: Microchemical Journal, Volume 155Author(s): G.H. Li, Y. Chen, X.J. Sun, P.Q. Duan, Y. Lei, L.F. ZhangAbstractChinese scroll painting is one of the oldest continuous artistic traditions in the world. These paintings are characterized by brushwork, pigment category and painting style. In order to nondestructively investigate the techniques of large-scale Chinese scroll paintings, an automatic hyperspectral scanning system, composed of a hyperspectral camera, a halogen light source, an automatic scanning platform, data processing software and a reference spectral library, was set up. This sy...
Source: Microchemical Journal - Category: Chemistry Source Type: research
Publication date: Available online 21 February 2020Source: Journal of Electroanalytical ChemistryAuthor(s): Simin Kolahi Ahari, Behjat Deiminiat, Gholam Hossein RounaghiAbstractA novel, low-cost and sensitive electrochemical detection method was proposed for quantitative measurement of tramadol (TRA) based on using a pencil graphite electrode (PGE) modified with multiwalled carbon nanotubes (MWCNTs) and gold nanoparticles (AuNPs). The electroanalysis of tramadol was carried out by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Field emission scanning electron microscopy (FE-SEM) was used to in...
Source: Journal of Electroanalytical Chemistry - Category: Chemistry Source Type: research
Publication date: 5 July 2020Source: Journal of Alloys and Compounds, Volume 828Author(s): F. Gaâbel, M. Khlifi, N. Hamdaoui, K. Taibi, J. DhahriAbstractCaCu2.8Ni0.2Ti4O12 ceramics were prepared via the solid-state reaction. The pellets were sintering at 950 °C, 1000 °C, 1050 °C and 1100 °C for 24h. The X-ray diffraction (XRD) exhibits the crystallization of all the samples in the cubic structure with Im3‾ space group. The scanning electronic microscope (SEM) analysis show the growth of grain size by increasing sintering temperature from 0.65 to 18.58 μm. The conducti...
Source: Journal of Alloys and Compounds - Category: Chemistry Source Type: research
In this study, the effects of hafnium addition on the microstructure and mechanical properties of CoCrFeNi high entropy alloy were investigated. The CoCrFeNiHfx (x = 0, 0.1, 0.2, 0.3 and 0.4, x values in molar ratio) high entropy alloys were prepared by vacuum arc melting. The microstructure and phase identities were studied by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. With increasing Hf contents, the structure of CoCrFeNiHfx HEAs changed from FCC single phase to Ni7Hf2 + FCC, then to Ni7Hf2 + C15 Laves + FCC, and finally to C15 Laves ...
Source: Journal of Alloys and Compounds - Category: Chemistry Source Type: research
Publication date: 25 June 2020Source: Journal of Alloys and Compounds, Volume 827Author(s): Sandeep Saini, Jyoti Shah, R.K. Kotnala, K.L. YadavAbstractIn green energy generation, recently Hydroelectric cell (HEC) by dissociating the water molecules at room temperature has taken a big stride among other alternative green energy sources. In this work, another unique novel material Ni substituted lithium ferrite (LNFO) for the fabrication of hydroelectric cell to generate green electricity has been reported. Oxygen deficient nanoporous LNFO has been synthesised by the Solid-State reaction method. Special processing steps were...
Source: Journal of Alloys and Compounds - Category: Chemistry Source Type: research
ObjectiveRecent availability of amyloid and tau positron emission tomography (PET) has provided us with a unique opportunity to measure the association of systemic vascular health with brain health after accounting for the impact of Alzheimer disease (AD) pathologies. We wanted to quantify early cerebrovascular health –related magnetic resonance imaging brain measures (structure, perfusion, microstructural integrity) and evaluate their utility as a biomarker for cerebrovascular health.MethodsWe used 2 independent samples (discovery, n  = 390; validation, n = 1,035) of individuals, aged&thi...
Source: Annals of Neurology - Category: Neurology Authors: Tags: Research Article Source Type: research
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