Microstructural imaging

Ebook "Electron microscopy in heterogeneous catalysis (Series in Microscopy in materials science)" addresses a number of issues that are fundamental to the understanding of heterogeneous catalysis by oxides and supported metals. The properties of a catalyst are governed by its microstructure and chemistry on an atomic scale, and electron microscopy methods are essential to directly analyze these properties.

246p coduathanh1122 27-03-2024 1 0   Download

Part 2 book "Computed tomography advanced applications" includes content: Cone beam computed tomography for oral and maxillofacial imaging; usefulness of cone beam computed tomography for the diagnosis and treatment of oral and maxillofacial pathology; novelty detection‐based internal fingerprint segmentation in optical coherence tomography images; the use of computed tomography to explore the microstructure of materials in civil engineering - from rocks to concrete; physical transport properties of porous rock with computed tomography;.... and other contents.

148p oursky05 23-10-2023 4 2   Download

Uterine cervical cancer (UCC) was the fourth leading cause of cancer death among women worldwide. The conventional MRI hardly revealing the microstructure information. This study aimed to compare the value of amide proton transfer-weighted imaging (APTWI) and diffusion kurtosis imaging (DKI) in evaluating the histological grade of cervical squamous carcinoma (CSC) in addition to routine diffusion-weighted imaging (DWI).

10p vielonmusk 21-01-2022 19 0   Download

High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT) is an emerging technology for evaluation of bone quality in Rheumatoid Arthritis (RA). However, there are limitations with standard HR-pQCT imaging protocols for examination of regions of bone commonly affected in RA.

12p viannito2711 20-04-2021 11 1   Download

Fibered confocal fluorescence microscopy (FCFM) allows in vivo investigation of pulmonary microstructures. However, the bronchial epithelium can only be imaged using exogenous fluorophores. The objective of this study is to compare methylene blue (MB) and acriflavine genotoxicity and to assess FCFM performance for in vivo imaging of precancerous lesions.

10p vimontana2711 05-04-2021 11 1   Download

Osteoarthritis (OA) is now increasingly recognized as being related to the whole joint instead of the cartilage alone. In particular, the importance of subchondral bone in OA pathogenesis has drawn a lot of interest. The aim of this study is to investigate subchondral bone microstructural features in two femoral condyles of human knee osteoarthritis.

9p vitennessee2711 02-02-2021 7 1   Download

The research results of poly(1-naphthylamine)/Fe3O4 (PNA/Fe3O4) nanocomposites synthesized by a chemical method for As(III) wastewater treatment are presented in this paper. XRD patterns and TEM images showed that the Fe3O4 grain size varied from 13 to 20 nm. The results of Raman spectral analysis showed that PNA participated in part of the PNA/Fe3O4 composite samples. The grain size of PNA/Fe3O4 composite samples is about 25–30 nm measured by SEM.

10p tradaviahe14 01-02-2021 5 0   Download

In the present study, we report on the synthesis of ZnO nanoparticles using Tilia Tomentosa (Ihlamur) leaves extract followed by calcination at 400
C for 15 min. The prepared ZnO nanoparticles were characterized by XRD and SEM to study the phase and microstructure, respectively. The XRD analysis showed the absence of impurity peaks and the SEM image confirmed the spherical nature of the prepared ZnO nanoparticles with an average particle size of 80 nm.

7p larachdumlanat129 14-01-2021 11 1   Download

The microstructure of cast Al-4Si-Mg reinforced with fly ash particles at various particle contents has been studied. The composites were fabricated by stir casting process and characterized by optical microscopy, image analyzer, scanning electron microscopy and hardness measurements. The results showed that particle contents affected to the presence of porosities and hardness of the composites. It was observed that increasing the fly ash content increase the porosity in the composites, with the matrix alloy reinforced with 15 wt.

10p 12120609 01-06-2020 6 2   Download

Prostate MRI has become a corner stone in diagnosis of prostate cancer (PC). Diffusion weighted imaging and the apparent diffusion coefficient (ADC) can be used to reflect tumor microstructure.

11p viorochimaru2711 30-05-2020 10 0   Download

3D high-resolution X-ray imaging methods have emerged over the last years for visualising the anatomy of tissue samples without substantial sample preparation. Quantitative analysis of cells and intercellular spaces in these images has, however, been difficult and was largely based on manual image processing.

14p vihashirama2711 21-05-2020 13 1   Download

A combination of gel-casting and polymeric foam infiltration methods is used in this study to prepare porous bodies of hydroxyapatite (HA), to provide a better control over the microstructures of samples. These scaffolds were prepared by impregnating a body of porous polyurethane foam with slurry containing HA powder, and using a percentage of solids between 40% and 50% w/v, and three different types of monomers to provide a better performance.

8p kequaidan1 16-11-2019 8 0   Download

The Hibiscus sabdariffa calyxes’ residue (HSR) remained after the extraction of beverage is discarded which contributes to environmental pollution. The objective of this study was to explore the suitability of incorporating different amount of HSR (0%, 1.25%, 2.5%, 3.75%, and 5.0%) in crackers to enhance dietary fiber and antioxidant content. Physicochemical properties, antioxidants activity, nutritional quality, sensory profile and microstructure properties of samples containing HSR were examined and compared with control crackers.

9p trinhthamhodang1 16-11-2019 24 0   Download

In order to investigate how the microstructure of fuel/matrix-interaction (FMI) layers change during irradiation, different U–7Mo dispersion fuel plates have been irradiated to high fission density and then characterized using scanning electron microscopy (SEM). Specifially, samples from irradiated U–7Mo dispersion fuel elements with pure Al, Al–2Si and AA4043 (~4.5 wt.%Si) matrices were SEM characterized using polished samples and samples that were prepared with a focused ion beam (FIB).

12p minhxaminhyeu5 30-06-2019 15 1   Download

(BQ) Part 2 of the document Magnetic resonance imaging of microscopic has contents: Diffusion weighted magnetic resonance microscopy, manganese enhanced magnetic resonance microscopy, a bit of history... and other contents. Invite you to consult the details.

56p thuongdanguyetan10 09-03-2019 22 1   Download

Among all the clinical indications for which radiologists, nuclear medicine physicians, neurologists, neurosurgeons, psychiatrists (and others examining disorders of the brain) order and read brain PET scans, demand is greatest for those pertaining to dementia and related disorders. This demand is driven by the sheer prevalence of those conditions, coupled with the fact that the differential diagnosis for causes of cognitive impairment is wide and often difficult to distinguish clinically.

231p crius75 03-01-2013 52 7   Download

Congenital heart disease in newborns is associated with global impairment in development. We characterized brain metabolism and microstructure, as measures of brain maturation, in newborns with congenital heart disease before they underwent heart surgery. Methods We studied 41 term newborns with congenital heart disease — 29 who had transposition of the great arteries and 12 who had single-ventricle physiology — with the use of magnetic resonance imaging (MRI), magnetic resonance spectroscopy (MRS), and diffusion tensor imaging (DTI) before cardiac surgery....

12p muakhuya 07-07-2012 68 2   Download