Article
Engineering, Chemical
Junjie Wang, Shuangfang Lu, Pengfei Zhang, Qi Zhi, Hongsheng Huang
Summary: In this study, ten samples from the Shahejie Formation, Dongying Sag, Bohai Bay Basin, China, were analyzed using argon ion beam milling-scanning electron microscopy (SEM) to reveal the pore distribution characteristics of different lithofacies lacustrine shales. The SEM images showed that interparticle pores at the edges of brittle particles and intraparticle pores in clay mineral aggregates were the main contributing factors to the reservoir spaces in shale reservoirs. Clay and felsic minerals primarily controlled the shale pore sizes, with the clay mineral content inversely proportional to the pore size. The study also found that felsic-rich shales were favorable for shale oil accumulation and seepage, while calcareous shales with a large number of dissolution pores and organic matter content could produce self-generation and self-storage matrix shale oil.
Article
Materials Science, Multidisciplinary
Jeffrey M. Wheeler
Summary: Meteorites have a unique microstructure called the Widmanstatten structure, which was mapped using mechanical phase mapping in the Taza meteorite to statistically determine properties of different phases. Five microstructural phases were identified and characterized, with mechanical phase maps showing superior contrast in two phases compared to EDX measurements.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Physical
Aneta Wardak, Witold Chrominski, Anna Reszka, Dominika Kochanowska, Marta Witkowska-Baran, Malgorzata Lewandowska, Andrzej Mycielski
Summary: This study presents a defect analysis in Cd and Te inclusion regions within Bridgman-grown Cd0.95Mn0.05Te crystals for nuclear detectors. Contrary to Cd inclusions causing microcracks, Te inclusions do not generate defects but induce higher stresses. The higher stress from Te inclusions has a smaller impact on charge carrier transport in detectors compared to Cd inclusions, as confirmed by mu tau product measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Adedoyin Adeyilola, Natalia Zakharova, Kouqi Liu, Thomas Gentzis, Humberto Carvajal-Ortiz, Hallie Fowler, William B. Harrison III
Summary: This study provides a comprehensive description of the pore system of the Antrim Shale in the Michigan Basin, including porosity, pore size distribution, pore morphology, and mineral associations. The results show that the organic content controls gas sorption and storage capacity.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Environmental Sciences
Zhiqing Li, Zhiyu Qi, Shengwen Qi, Linxin Zhang, Xiaokun Hou
Summary: The Loess Plateau is a vital area for land creation projects, with important implications for city development and infrastructure safety. Different states of loess (intact, compacted, remolded) exhibit differences in microstructural characteristics, with remolded loess showing lower compressibility and specific surface area. Compacted loess at higher densities display specific particle structure changes under high-energy impact load. The threshold value of dry density at 1710 kg/m(3) + 10 kg/m(3) defines the boundaries and micro-macro relationships among the different states of loess.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Zhiqing Li, Shengwen Qi, Zhiyu Qi, Linxin Zhang, Xiaokun Hou
Summary: Loess in northern China, known for soil erosion and shortage of urban land, poses challenges for filling construction due to moisture loss, water shortage, and construction costs. This study compares intact and compacted loess microstructures, revealing that both exhibit trimodal PSDs and a compaction mechanism involving pore size transformation and particle rearrangement. Understanding these properties is crucial for improving engineering safety in loess areas.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Rohan Parai, Naga Bharath Gundrati, Sashanka Akurati, Gary M. Koenig, Dipankar Ghosh
Summary: This study explores the influence of sucrose on microstructure evolution in ice-templated Li4Ti5O12 materials using scanning electron microscopy and X-ray computed tomography. Sucrose was found to reduce transition region height, induce early alignment of ice lamellae, and increase branching of primary ice dendrites, enhancing pore path complexity. Diffusion simulations showed that pore tortuosity increased with sucrose content.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Physical
M. A. Mazo, A. C. Caballero, J. Rubio
Summary: In this study, cheap, abundant, and easily-obtained carbon fillers such as graphite and carbon black were successfully incorporated into a silicon oxycarbide matrix to obtain dense crack-free bulk composites with enhanced electrical and thermal conductivities. Raman parameters were crucial for understanding the electronic and/or phonon transport in the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
T. E. Whitfield, N. L. Church, H. J. Stone, N. G. Jones
Summary: Refractory metal high entropy superalloys (RSA) are being developed for high temperature structural applications. However, recently the microstructures of several RSA have been shown to be unstable, precipitating potentially deleterious intermetallic phases during prolonged exposure at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Nitish Bibhanshu, Gyan Shankar, Satyam Suwas
Summary: Hot deformation and softening response of titanium aluminide Ti-48Al-2V-0.2B were investigated, with microstructural changes observed at different strain rates and temperatures. Deformation in different phase fields led to various mechanisms, such as dynamic recrystallization and cavitation along grain boundaries at certain temperatures. These findings provide insights into the softening behavior of the alloy under different deformation conditions.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Li Fan, Zelin Wang, Yuxiang Lu, Jianguang Zhou
Summary: This study introduces a staged loss-driven neural networks model architecture to transform low-resolution SEM images into super-resolved ones. Experimental results show that compared with other advanced approaches, our model achieves satisfactory results.
Article
Construction & Building Technology
Jiandong Huang, Yi Zhang, Yuantian Sun, Jiaolong Ren, Zedong Zhao, Junfei Zhang
Summary: This study investigated the pore size distributions and permeability reduction behavior of pervious concrete through laboratory tests. The results showed that while thickness has a negligible effect on permeability, it has a significant impact on clogging behavior.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Gaurav Dak, Sachin Sirohi, Chandan Pandey
Summary: This study examined the microstructure and mechanical properties of a dissimilar laser beam welded joint between ferritic/martensitic P92 steel and 304L austenitic stainless steel. It was found that the dissimilar joint exhibited a high level of inhomogeneity in its microstructure. The effect of this inhomogeneity on the mechanical properties, such as microhardness and impact strength, of the welded joint was discussed. The results showed that the welded joint met the requirements for both as-weld and post-weld heat treatment situations, demonstrating a satisfactory combination of tensile strength and impact strength.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Chemistry, Physical
S. C. H. Llewelyn, L. R. Owen, H. Y. Playford, N. G. Jones, D. Dye, M. C. Hardy, H. J. Stone
Summary: This study examined the effects of Ni:Co ratio variation on the lattice misfit of NiCo-5Al-5Ti-15Cr alloys over a wide temperature range. Different alloy compositions were prepared and aged at 800 degrees C, and neutron diffraction was used to determine the lattice parameters. The results showed that the lattice misfit decreased with increasing temperature for alloys with Co content of 0-47 at%, and the misfit increased systematically with increasing Co content up to 38 at%. The alloy with 47Co exhibited lower misfit values than the 38Co alloy at temperatures up to 700 degrees C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Paul M. Souza, Giribaskar Sivaswamy, Aurik Andreu, Salaheddin Rahimi
Summary: Secondary hot-working is crucial for microstructural modification of dual phase titanium alloys to tailor mechanical properties. However, industrial scale manufacturing often poses challenges due to a narrow processing window. Cyclic thermal treatment (CTT) is emerging as a potential technology for microstructure modification in Ti-6Al-4V, reducing mechanical work in the alpha + beta region. This study summarizes the CTT investigations conducted on wrought Ti-6Al-4V alloy to develop different initial microstructures and incorporates a JMAK model into DEFORM (R) software for microstructure evolution prediction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Computer Science, Interdisciplinary Applications
Dan Benjamini, Michal E. Komlosh, Nathan H. Williamson, Peter J. Basser
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2019)
Article
Radiology, Nuclear Medicine & Medical Imaging
M. E. Komlosh, D. Benjamini, N. W. Williamson, F. Horkay, E. B. Hutchinson, P. J. Basser
MAGNETIC RESONANCE IMAGING
(2019)
Article
Radiology, Nuclear Medicine & Medical Imaging
Dan Benjamini, Peter J. Basser
MAGNETIC RESONANCE IMAGING
(2019)
Review
Biophysics
Dan Benjamini, Peter J. Basser
NMR IN BIOMEDICINE
(2020)
Article
Multidisciplinary Sciences
Kristofor Pas, Michal E. Komlosh, Daniel P. Perl, Peter J. Basser, Dan Benjamini
SCIENTIFIC REPORTS
(2020)
Article
Biology
Nathan H. Williamson, Rea Ravin, Dan Benjamini, Hellmut Merkle, Melanie Falgairolle, Michael James O'Donovan, Dvir Blivis, Dave Ide, Teddy X. Cai, Nima S. Ghorashi, Ruiliang Bai, Peter J. Basser
Article
Biochemical Research Methods
Nathan H. Williamson, Rea Ravin, Teddy X. Cai, Dan Benjamini, Melanie Falgairolle, Michael J. O'Donovan, Peter J. Basser
JOURNAL OF MAGNETIC RESONANCE
(2020)
Article
Clinical Neurology
Dan Benjamini, Diego Iacono, Michal E. Komlosh, Daniel P. Perl, David L. Brody, Peter J. Basser
Summary: The study focused on investigating the changes in different MRI parameters related to DAI in traumatic brain injury, using a combination of MRI and histopathology. The results suggest that multidimensional MRI can effectively differentiate the severity of axonal injury and may serve as non-invasive biomarkers for DAI detection.
Review
Radiology, Nuclear Medicine & Medical Imaging
Paddy J. Slator, Marco Palombo, Karla L. Miller, Carl-Fredrik Westin, Frederik Laun, Daeun Kim, Justin P. Haldar, Dan Benjamini, Gregory Lemberskiy, Joao P. de Almeida Martins, Jana Hutter
Summary: This article discusses an emerging paradigm in microstructure imaging that combines diffusion-relaxometry imaging to provide a more detailed assessment of tissue microstructure. By varying multiple MR contrast encodings in a multidimensional acquisition space, correlations and coupling between multiple MR parameters can be quantified, enabling the disentangling of multiple tissue compartments within voxels. This allows for the creation of new generation microstructural maps with improved biological sensitivity and specificity.
MAGNETIC RESONANCE IN MEDICINE
(2021)
Article
Neurosciences
Susie Y. Huang, Thomas Witzel, Boris Keil, Alina Scholz, Mathias Davids, Peter Dietz, Elmar Rummert, Rebecca Ramb, John E. Kirsch, Anastasia Yendiki, Qiuyun Fan, Qiyuan Tian, Gabriel Ramos-Llorden, Hong-Hsi Lee, Aapo Nummenmaa, Berkin Bilgic, Kawin Setsompop, Fuyixue Wang, Alexandru Avram, Michal Komlosh, Dan Benjamini, Kulam Najmudeen Magdoom, Sudhir Pathak, Walter Schneider, Dmitry S. Novikov, Els Fieremans, Slimane Tounekti, Choukri Mekkaoui, Jean Augustinack, Daniel Berger, Alexander Shapson-Coe, Jeff Lichtman, Peter J. Basser, Lawrence L. Wald, Bruce R. Rosen
Summary: The Human Connectome Project marked advancements in MRI technology for mapping the structural connections of the human brain, showcasing the potential of high-gradient performance scanners for studying neural tissue microstructure. The development of the next-generation Connectome scanner aims to optimize the study of neural tissue microstructure and connectional anatomy, pushing diffusion resolution to unprecedented levels and creating an ultimate diffusion MRI instrument capable of capturing the multi-scale organization of the living human brain.
Article
Clinical Neurology
Dan Benjamini, David S. Priemer, Daniel P. Perl, David L. Brody, Peter J. Basser
Summary: This study uses machine learning and multidimensional MRI to successfully detect and identify astrogliosis, an invisible process in previous radiological imaging. The method has the potential to greatly impact neuroimaging studies of injury, disease, repair, and aging by providing a highly sensitive and specific tool for detecting reactive astrocytes at the individual level.
Editorial Material
Physics, Multidisciplinary
Mustapha Bouhrara, Jana Hutter, Dan Benjamini
FRONTIERS IN PHYSICS
(2022)
Article
Geriatrics & Gerontology
Mustapha Bouhrara, Alexandru V. Avram, Matthew Kiely, Aparna Trivedi, Dan Benjamini
Summary: Using the MAP-MRI framework, this study found that older adults exhibited higher non-Gaussianity and lower propagator anisotropy in white matter, indicating axonal degradation. In gray matter, these two indices were consistent and showed regional heterogeneity, suggesting fewer neuronal projections across cortical layers and increased glial concentration. Regional variations in age-related microstructural differences were also observed, consistent with the posterior-anterior shift in aging paradigm.
NEUROBIOLOGY OF AGING
(2023)
Article
Physics, Multidisciplinary
Dan Benjamini, Mustapha Bouhrara, Michal E. Komlosh, Diego Iacono, Daniel P. Perl, David L. Brody, Peter J. Basser
Summary: Multidimensional MRI is an emerging approach that encodes water relaxation and mobility, using subvoxel distributions instead of voxel-averaged values. The study aims to evaluate the performance of a nonlocal estimation of multispectral magnitudes (NESMA) filter on reduced datasets to limit the total acquisition time required for reliable multidimensional MRI characterization of the brain. Noise reduction improved the accuracy of resulting injury biomarker maps while allowing for significant data reduction in different cases.
FRONTIERS IN PHYSICS
(2021)
Article
Neurosciences
Dan Benjamini, Elizabeth B. Hutchinson, Michal E. Komlosh, Courtney J. Comrie, Susan C. Schwerin, Guofeng Zhang, Carlo Pierpaoli, Peter J. Basser