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Transverse patterning

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https://www.readbyqxmd.com/read/29346490/composition-architecture-and-functional-implications-of-the-connective-tissue-network-of-the-extraocular-muscles
#1
Linda K McLoon, André Vicente, Krysta R Fitzpatrick, Mona Lindström, Fatima Pedrosa Domellöf
Purpose: We examined the pattern and extent of connective tissue distribution in the extraocular muscles (EOMs) and determined the ability of the interconnected connective tissues to disseminate force laterally. Methods: Human EOMs were examined for collagens I, III, IV, and VI; fibronectin; laminin; and elastin using immunohistochemistry. Connective tissue distribution was examined with scanning electron microscopy. Rabbit EOMs were examined for levels of force transmission longitudinally and transversely using in vitro force assessment...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29344976/role-of-elastography-in-axillary-examination-of-patients-with-breast-cancer
#2
Wanying Chang, Wanru Jia, Junni Shi, Congcong Yuan, Yuzhu Zhang, Man Chen
OBJECTIVES: This study aimed at exploring the role of ultrasound (US) elastography in the diagnosis of the axillary lymph node status in patients with breast cancer. METHODS: We analyzed 140 visible axillary lymph nodes on conventional US imaging. All of them underwent elastography. Five conventional US features were adopted to assess axillary lymph nodes: longitudinal diameter, longitudinal-to-transverse diameter ratio, cortical thickness, status of the hilum, and vascular pattern...
January 18, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29343646/role-of-boundary-conditions-in-determining-cell-alignment-in-response-to-stretch
#3
Kellen Chen, Andrea Vigliotti, Mattia Bacca, Robert M McMeeking, Vikram S Deshpande, Jeffrey W Holmes
The ability of cells to orient in response to mechanical stimuli is essential to embryonic development, cell migration, mechanotransduction, and other critical physiologic functions in a range of organs. Endothelial cells, fibroblasts, mesenchymal stem cells, and osteoblasts all orient perpendicular to an applied cyclic stretch when plated on stretchable elastic substrates, suggesting a common underlying mechanism. However, many of these same cells orient parallel to stretch in vivo and in 3D culture, and a compelling explanation for the different orientation responses in 2D and 3D has remained elusive...
January 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29331127/molecular-hydrodynamics-vortex-formation-and-sound-wave-propagation
#4
Kyeong Hwan Han, Changho Kim, Peter Talkner, George Em Karniadakis, Eok Kyun Lee
In the present study, quantitative feasibility tests of the hydrodynamic description of a two-dimensional fluid at the molecular level are performed, both with respect to length and time scales. Using high-resolution fluid velocity data obtained from extensive molecular dynamics simulations, we computed the transverse and longitudinal components of the velocity field by the Helmholtz decomposition and compared them with those obtained from the linearized Navier-Stokes (LNS) equations with time-dependent transport coefficients...
January 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29328193/polarization-insensitive-and-wide-incident-angle-optical-absorber-with-periodically-patterned-graphene-dielectric-arrays
#5
Xiujuan Zou, Gaige Zheng, Jiawei Cong, Linhua Xu, Yunyun Chen, Min Lai
A polarization-insensitive and angle-independent graphene absorber (GA) with periodically patterned grating is demonstrated. A periodic nanocavity composed of multilayer subwavelength grating and metal substrate supports a strongly localized mode inside the cavity, where the mode helps to absorb more electromagnetic waves. The proposed GA exhibits polarization-insensitive behavior and maintains the high absorption above 90% within a wide range of incident angle (more than 80°). We attribute the high absorption to the excitation of the cavity mode resonance and magnetic resonance for the transverse electric and transverse magnetic polarizations, respectively...
January 1, 2018: Optics Letters
https://www.readbyqxmd.com/read/29328092/talbot-carpet-at-the-transverse-plane-produced-in-the-diffraction-of-plane-wave-from-amplitude-radial-gratings
#6
Saifollah Rasouli, Ali Mohammad Khazaei, Davud Hebri
We experimentally demonstrate and theoretically predict a new and unprecedented optical carpet that includes all the geometric shadow and far-field and near-field diffraction patterns at the transverse plane in the diffraction from a radial grating illuminated by a plane wavefront. The main feature of using radial grating is the continuous change of the spatial period along the radial direction. Therefore, the geometric shadow, and the near-field and far-field diffraction regimes are mixed at various propagation distances, and the traditional definitions for the different diffraction regimes would not apply here...
January 1, 2018: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29321623/a-dual-layer-broadband-radar-absorber-to-minimize-electromagnetic-interference-in-radomes
#7
Thtreswar Beeharry, Riad Yahiaoui, Kamardine Selemani, Habiba Hafdallah Ouslimani
A thin broadband dual-layer radar absorber based on periodic Frequency Selective Surfaces (FSS) to tackle Electromagnetic Interference (EMI) in radomes is presented in this article. The proposed structure consists of periodically arranged metallic patterns printed on two dielectric substrates separated by an optimized air gap. Under normal incidence, the proposed structure exhibits at least 89.7% of absorption in the whole band of 4.8 GHz to 11.1 GHz for both Transverse Electric (TE) and Magnetic (TM) polarizations...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29319350/biomechanical-evaluation-of-standard-versus-extended-proximal-fixation-olecranon-plates-for-fixation-of-olecranon-fractures
#8
Allison L Boden, Charles A Daly, Poonam P Dalwadi, Stephanie A Boden, William C Hutton, Raghuveer C Muppavarapu, Michael B Gottschalk
BACKGROUND: Small olecranon fractures present a significant challenge for fixation, which has resulted in development of plates with proximal extension. Olecranon-specific plates with proximal extensions are widely thought to offer superior fixation of small proximal fragments but have distinct disadvantages: larger dissection, increased hardware prominence, and the increased possibility of impingement. Previous biomechanical studies of olecranon fracture fixation have compared methods of fracture fixation, but to date there have been no studies defining olecranon plate fixation strength for standard versus extended olecranon plates...
January 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29315904/the-effects-of-ageing-on-mouse-muscle-microstructure-a-comparative-study-of-time-dependent-diffusion-mri-and-histological-assessment
#9
Paola Porcari, Matt G Hall, Chris A Clark, Elizabeth Greally, Volker Straub, Andrew M Blamire
The investigation of age-related changes in muscle microstructure between developmental and healthy adult mice may help us to understand the clinical features of early-onset muscle diseases, such as Duchenne muscular dystrophy. We investigated the evolution of mouse hind-limb muscle microstructure using diffusion imaging of in vivo and in vitro samples from both actively growing and mature mice. Mean apparent diffusion coefficients (ADCs) of the gastrocnemius and tibialis anterior muscles were determined as a function of diffusion time (Δ), age (7...
January 9, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29312869/gastrointestinal-tract-involvement-in-acute-pancreatitis-initial-findings-and-follow-up-by-magnetic-resonance-imaging
#10
Yi-Fan Ji, Xiao-Ming Zhang, Don G Mitchell, Xing-Hui Li, Tian-Wu Chen, Yong Li, Zhi-Guo Bao, Wei Tang, Bo Xiao, Xiao-Hua Huang, Lin Yang
Background: To study the initial and follow up patterns of gastrointestinal tract involvement in acute pancreatitis (AP) using magnetic resonance imaging (MRI). Methods: A total of 209 patients with AP undergoing abdominal MRI on 1.5 T MRI were compared to 100 control patients selected from our daily clinical caseload who underwent MRI over the same recruitment period and had no other disease which can cause abnormality of gastrointestinal tract. Initial and follow up MRI examinations of gastrointestinal tract abnormalities were noted for AP patients...
December 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29311596/theory-for-perfect-transmodal-fabry-perot-interferometer
#11
Xiongwei Yang, Joshua M Kweun, Yoon Young Kim
We establish the theory for perfect transmodal Fabry-Perot interferometers that can convert longitudinal modes solely to transverse modes and vice versa, reaching up to 100% efficiency. Two exact conditions are derived for plane mechanical waves: simultaneous constructive interferences of each of two coupled orthogonal modes, and intermodal interference at the entrance and exit sides of the interferometer with specific skew polarizations. Because the multimodal interferences and specific skew motions require unique anisotropic interferometers, they are realized by metamaterials...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311414/dynamics-of-a-quasiparticle-in-the-%C3%AE-t-sub-3-sub-model-role-of-pseudospin-polarization-and-transverse-magnetic-field-on-i-zitterbewegung-i
#12
Tutul Biswas, Tarun Kanti Ghosh
We consider the $\alpha$-$T_3$ model which provides a smooth crossover between the honeycomb lattice with pseudospin $1/2$ and the dice lattice with pseudospin $1$ through the variation of a parameter $\alpha$. We study the dynamics of a wave packet representing a quasiparticle in the $\alpha$-T$_3$ model with zero and finite transverse magnetic field. For zero field, it is shown that the wave packet undergoes a transient $zitterbewegung$ (ZB). Various features of ZB depending on the initial pseudospin polarization of the wave packet have been revealed...
January 9, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29311205/thermoelectric-magnetohydrodynamic-effects-on-the-crystal-growth-rate-of-undercooled-ni-dendrites
#13
A Kao, J Gao, K Pericleous
In the undercooled solidification of pure metals, the dendrite tip velocity has been shown experimentally to have a strong dependence on the intensity of an external magnetic field, exhibiting several maxima and minima. In the experiments conducted in China, the undercooled solidification dynamics of pure Ni was studied using the glass fluxing method. Visual recordings of the progress of solidification are compared at different static fields up to 6 T. The introduction of microscopic convective transport through thermoelectric magnetohydrodynamics is a promising explanation for the observed changes of tip velocities...
February 28, 2018: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29305728/the-rice-zebra3-z3-mutation-disrupts-citrate-distribution-and-produces-transverse-dark-green-green-variegation-in-mature-leaves
#14
Suk-Hwan Kim, Choon-Tak Kwon, Giha Song, Hee-Jong Koh, Gynheung An, Nam-Chon Paek
BACKGROUND: Rice zebra mutants are leaf variegation mutants that exhibit transverse sectors of green/yellow or green/white in developing or mature leaves. In most cases, leaf variegation is caused by defects in chloroplast biogenesis pathways, leading to an accumulation of reactive oxygen species in a transverse pattern in the leaves. Here, we examine a new type of leaf variegation mutant in rice, zebra3 (z3), which exhibits transverse dark-green/green sectors in mature leaves and lacks the typical yellow or white sectors...
January 5, 2018: Rice
https://www.readbyqxmd.com/read/29304851/development-of-the-excitation-contraction-coupling-machinery-and-its-relation-to-myofibrillogenesis-in-human-ipsc-derived-skeletal-myocytes
#15
Jeanne Lainé, Gunnar Skoglund, Emmanuel Fournier, Nacira Tabti
BACKGROUND: Human induced pluripotent stem cells-derived myogenic progenitors develop functional and ultrastructural features typical of skeletal muscle when differentiated in culture. Besides disease-modeling, such a system can be used to clarify basic aspects of human skeletal muscle development. In the present study, we focus on the development of the excitation-contraction (E-C) coupling, a process that is essential both in muscle physiology and as a tool to differentiate between the skeletal and cardiac muscle...
January 5, 2018: Skeletal Muscle
https://www.readbyqxmd.com/read/29288492/-leukodystrophy-like-phenotype-in-children-with-myelin-oligodendrocyte-glycoprotein-antibody-associated-disease
#16
Yael Hacohen, Thomas Rossor, Kshitij Mankad, Wk 'Kling' Chong, Andrew Lux, Evangeline Wassmer, Ming Lim, Frederik Barkhof, Olga Ciccarelli, Cheryl Hemingway
AIM: To review the demographics and clinical and paraclinical parameters of children with myelin oligodendrocyte glycoprotein (MOG) antibody-associated relapsing disease. METHOD: In this UK-based, multicentre study, 31 children with MOG antibody-associated relapsing disease were studied retrospectively. RESULTS: Of the 31 children studied, 14 presented with acute disseminated encephalomyelitis (ADEM); they were younger (mean 4.1y) than the remainder (mean 8...
December 30, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29288409/gene-expression-analysis-to-identify-mechanisms-underlying-heart-failure-susceptibility-in-mice-and-humans
#17
Christoph Koentges, Mark E Pepin, Carolyn Müsse, Katharina Pfeil, Sonia V Viteri Alvarez, Natalie Hoppe, Michael M Hoffmann, Katja E Odening, Samuel Sossalla, Andreas Zirlik, Lutz Hein, Christoph Bode, Adam R Wende, Heiko Bugger
Genetic factors are known to modulate cardiac susceptibility to ventricular hypertrophy and failure. To determine how strain influences the transcriptional response to pressure overload-induced heart failure (HF) and which of these changes accurately reflect the human disease, we analyzed the myocardial transcriptional profile of mouse strains with high (C57BL/6J) and low (129S1/SvImJ) susceptibility for HF development, which we compared to that of human failing hearts. Following transverse aortic constriction (TAC), C57BL/6J mice developed overt HF while 129S1/SvImJ did not...
December 29, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29285121/persistent-m%C3%A3-llerian-duct-syndrome-a-case-report-and-review
#18
Xiaoya Ren, Di Wu, Chunxiu Gong
Persistent Müllerian duct syndrome (PMDS) is a rare type of male pseudohermaphroditism caused by a deficiency in anti-Müllerian hormone (AMH) or a defect in its type II receptor. The current study reports the clinical data and results of the genetic analysis of a 17-month-old male diagnosed with PMDS. The clinical manifestations of the patient included a left transverse testicular ectopia and bilateral cryptorchidism. Pelvic ultrasonography indicated two testes on the same left inguinal ring and left inguinal hernia and uterine tissue located at the left rear of the bladder...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29284231/assessment-of-the-influence-of-jogging-on-the-shape-of-female-foot-arches
#19
Agata Maslon, Joanna Golec, Elzbieta Szczygiel, Dorota Czechowska, Boguslaw Golec
INTRODUCTION: Both walking and its faster, running, consist of cyclical subsequent phases of swing and support; however, they differ in their time proportions as well as magnitude of acting forces. There is a lack of studies concerning the long-term consequences of repeated jogging cycles on the function of feet and, above all, on their permanent impact on the shape of foot arches. OBJECTIVES: The objective of this study was to answer the question whether regular jogging changes the shape of the transverse and medial longitudinal arches of the feet...
December 23, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/29275899/analysis-of-the-treatment-plan-evaluation-process-in-radiotherapy-through-eye-tracking
#20
A Kyroudi, K Petersson, M Ozsahin, J Bourhis, F Bochud, R Moeckli
BACKGROUND AND PURPOSE: Treatment plan evaluation is a clinical decision-making problem that involves visual search and analysis in a contextually rich environment, including delineated structures and isodose lines superposed on CT data. It is a two-step process that includes visual analysis and clinical reasoning. In this work, we used eye tracking methods to gain more knowledge about the treatment plan evaluation process in radiation therapy. MATERIALS AND METHODS: Dose distributions on a single transverse slice of ten prostate cancer treatment plans were presented to eight decision makers...
December 21, 2017: Zeitschrift Für Medizinische Physik
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