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45,520 results
  • Motion correction and noise removing in lung diffusion-weighted MRI using low-rank decomposition. [Journal Article]
    Med Biol Eng Comput. 2020 Jul 11 [Online ahead of print]Wang X, Chen H, … Peng Y
  • Lung diffusion-weighted magnetic resonance imaging (DWI) has shown a promising value in lung lesion detection, diagnosis, differentiation, and staging. However, the respiratory and cardiac motion, blood flow, and lung hysteresis may contribute to the blurring, resulting in unclear lung images. The image blurring could adversely affect diagnosis performance. The purpose of this study is to reduce …
  • Mechanistic implications of altered protein expression in rheumatic heart disease. [Review]
    Heart Fail Rev. 2020 Jul 11 [Online ahead of print]Lumngwena EN, Skatulla S, … Ntusi NAB
  • Rheumatic heart disease (RHD) is a major cause of cardiovascular morbidity and mortality in low- and middle-income countries, where living conditions promote spread of group A β-haemolytic streptococcus. Autoimmune reactions due to molecular mimicry of bacterial epitopes by host proteins cause acute rheumatic fever (ARF) and subsequent disease progression to RHD. Despite knowledge of the factors …
  • Altered Biatrial Phasic Function after Heart Transplantation in Children. [Journal Article]
    J Am Soc Echocardiogr. 2020 Jul 08 [Online ahead of print]Parthiban A, Jani V, … Kutty S
  • CONCLUSIONS: Atrial strain determination is feasible in pediatric HT recipients and demonstrates disruption of reservoir, conduit, and booster function of both atria in this population; we speculate this may be a consequence of ventricular diastolic dysfunction.
  • Corneal biomechanical properties in myopic eyes evaluated via Scheimpflug imaging. [Journal Article]
    BMC Ophthalmol. 2020 Jul 11; 20(1):279.Yu AY, Shao H, … Chen S
  • CONCLUSIONS: Eyes with severe myopia showed greater DA, lesser A2 time, HC time, and faster A2-velocity compared to low to high myopia. This suggests the cornea becomes weaker and more deformable with elongation of axial length with corresponding increases in myopia. DA, A2-time and A2-velocity could be useful corneal biomechanical indicators in patients with myopia.
  • Spectroscopic studies for the inclusion complexation of ketoprofen enantiomers with β-cyclodextrin. [Journal Article]
    Spectrochim Acta A Mol Biomol Spectrosc. 2020 Jul 02; 241:118674.Obaid A, Jamil AKM, … Mohamad S
  • Inclusion complexes of R-ketoprofen and S-ketoprofen enantiomers with β-cyclodextrin (β-CD) in aqueous solution were studied using various spectroscopic techniques such as Raman, FTIR, UV and fluorescence. The different relative intensities and characteristic band shifts of the two enantiomers from Raman spectra suggests different interaction when complexed with β-CD. Raman experiments revealed a…
  • Dosimetric effects of adaptive prostate cancer radiotherapy in an MR-linac workflow. [Journal Article]
    Radiat Oncol. 2020 Jul 10; 15(1):168.Mannerberg A, Persson E, … Ceberg S
  • CONCLUSIONS: A target underdosage caused by anatomical changes occurring during the reported time frame for adaptive replanning MR-linac workflows was found. Volume changes in both bladder and rectum caused large prostate displacements. This indicates the importance of thorough position verification before treatment delivery and that the workflow needs to speed up before introducing margin reduction.
  • A numerical investigation of the infrapatellar fat pad. [Journal Article]
    Proc Inst Mech Eng H. 2020 Jul 10 [Online ahead of print]Fontanella CG, Macchi V, … Carniel EL
  • The infrapatellar fat pad is an adipose tissue in the knee that facilitates the distribution of synovial fluid and absorbs impulsive actions generated through the joint. The correlation between morphological configuration and mechanical properties is analyzed by a computational approach. The microscopic anatomy of the infrapatellar fat pad is studied aiming to measure the dimension of adipose lob…
  • The Effect of a Taper Angle on Micro-Compression Testing of Mo-B-C Coatings. [Journal Article]
    Materials (Basel). 2020 Jul 08; 13(14)Zábranský L, Bernátová K, … Buršíková V
  • This research was devoted to studying the influence of the taper angle on the micro-compression of micro-pillars fabricated from near-amorphous and nanocrystalline Mo-B-C coatings. A series of micro-pillars with a taper angle between 4-14° was fabricated by focused ion beam technique. The deformation mechanism was found to be dependent on the taper and, also, on the crystallinity of the coating. …
  • Surface analysis of ancient parchments via the EVA film: The Aleppo Codex. [Journal Article]
    Anal Biochem. 2020 Jul 07 [Online ahead of print]Zilberstein G, Zilberstein S, … Righetti PG
  • The margins of several pages of the Aleppo codex have been found to be corroded and contaminated by diffuse maculae. In order to understand the origin of this decay these margins have been analysed by applying EVA (ethylene vinyl acetate plastic embedded with strong cation and anion exchangers and mixed with C8 and C18 hydrophobic resins) diskettes for harvesting surface material. The captured co…
  • Split Calvarial Bone Graft for Reconstruction of Skull Defect in Langerhans Cell Histiocytosis. [Journal Article]
    J Craniofac Surg. 2020 Jul 01 [Online ahead of print]Baek SO, Kim J, Lee JY
  • Langerhans cell histiocytosis (LCH) is a rare disease in which histiocytes proliferates in several tissues. It mainly occurs in children between 1 and 15 years of age, and affects bone especially the skull being the most common site of invasion. It is desirable to reconstruct the skull defect after surgical removal of the lesion with autologous bone considering the fact that this disease affects …
  • Polyethylene oxide enhances the ductility and toughness of polylactic acid: the role of mesophase. [Journal Article]
    Soft Matter. 2020 Jul 10 [Online ahead of print]Wang Z, Zhang C, … Liu C
  • A lack of understanding of the structure-property relationship of the polylactic acid (PLA)-based polymer composite system makes it a challenge to manufacture products with optimized mechanical performance by precisely regulating the microscopic structure and morphology. Herein, we chose the PLA/polyethylene oxide (PEO) blend as a model to investigate the structural reason for the enhanced ductil…
  • Membrane Poration Mechanisms at the Cell-Nanostructure Interface. [Journal Article]
    Adv Biosyst. 2019 Dec; 3(12):e1900148.Dipalo M, Caprettini V, … De Angelis F
  • 3D vertical nanostructures have become one of the most significant methods for interfacing cells and the nanoscale and for accessing significant intracellular functionalities such as membrane potential. As this intracellular access can be induced by means of diverse cellular membrane poration mechanisms, it is important to investigate in detail the cell condition after membrane rupture for assess…
  • Low-Invasive Cell Injection based on Rotational Microrobot. [Journal Article]
    Adv Biosyst. 2019 Jul; 3(7):e1800274.Lu H, Yang Y, … Shen Y
  • The advancement of cell injections has created a need for accurate, efficient, and low-invasive injections. However, the conventional approaches to reduce cell damage during penetration, mainly optimization of micropipette tips and vision-based automatic injections, have almost reached the limit. Here, described are the design and implementation of a robotic-aided rotatory microinjection system t…
  • Wonky whales: the evolution of cranial asymmetry in cetaceans. [Journal Article]
    BMC Biol. 2020 Jul 10; 18(1):86.Coombs EJ, Clavel J, … Goswami A
  • CONCLUSIONS: Early ancestors of living whales had little cranial asymmetry and likely were not able to echolocate. Archaeocetes display high levels of asymmetry in the rostrum, potentially related to directional hearing, which is lost in early neocetes-the taxon including the most recent common ancestor of living cetaceans. Nasofacial asymmetry becomes a significant feature of Odontoceti skulls in the Early Oligocene, reaching its highest levels in extant taxa. Separate evolutionary regimes are reconstructed for odontocetes living in acoustically complex environments, suggesting that these niches impose strong selective pressure on echolocation ability and thus increased cranial asymmetry.
  • Dynamic Mechanical Response and Damage Mechanism of HTPB Propellant under Impact Loading. [Journal Article]
    Materials (Basel). 2020 Jul 07; 13(13)Zhang H, Liu M, … Chang H
  • The dynamic mechanical behaviors of Hydroxyl-terminated polybutadiene (HTPB) propellant was studied by a split Hopkinson pressure bar apparatus (SHPB) at strain rates ranging from 103 to 104 s-1. The obtained stress-strain curves indicated that the mechanical features, such as ultimate stress and strain energy, were strongly dependent on the strain rate. The real time deformation and fracture evo…
  • StatPearls: Sensory Neuropathy [BOOK]
    . StatPearls Publishing: Treasure Island (FL) Gomatos Elias L. EL Westside Regional Medical Center Rehman Anis A Southern Illinois University BOOK
  • Sensory neuropathies refer to a host of diseases that result in loss of sensation throughout the body. Collectively, sensory neuropathies can result from a plethora of conditions that this review will discuss. These may further sub-divide into small fiber (pain-dominant) and large fiber (ataxia-predominant) pathologies. When classifying sensory neuropathy for appropriate treatment and management,…
  • The neuro-immune microenvironment of acupoints-initiation of acupuncture effectiveness. [Journal Article]
    J Leukoc Biol. 2020 Jul; 108(1):189-198.Gong Y, Li N, … Xu Z
  • Acupuncture is a centuried and unfading treatment of traditional Chinese medicine, which has been proved to exert curative effects on various disorders. Numerous works have been put in to uncover the effective mechanisms of acupuncture. And the interdependent interaction between acupuncture and acupoint microenvironment is a crucial topic. As a benign minimally invasive stimulation, the insertion…
  • Deformation of a Liquid Near an AFM Tip: Molecular Dynamics Approach. [Journal Article]
    Langmuir. 2020 Jul 09 [Online ahead of print]Hilaire L, Siboulet B, … Dufrêche JF
  • The interaction between an AFM probe and a thin film of water deposited over a flat substrate is studied using Molecular Dynamics (MD). The effects of the film thickness and of the probe radius on both the deformation height of the liquid interface, and the distance of the jump to contact at which the liquid comes in direct contact with the probe, are investigated. The dynamics of the surface def…
  • Modeling of surface mechanical behaviors of soft elastic solids: theory and examples. [Journal Article]
    Soft Matter. 2020 Jul 09 [Online ahead of print]Liu Z, Jagota A, Hui CY
  • Surfaces of soft solids can have significant surface stress, extensional modulus and bending stiffness. Previous theoretical studies have usually examined cases in which both the surface stress and bending stiffness are constant, assuming small deformation. In this work we consider a general formulation in which the surface can support large deformation and carry both surface stresses and surface…
  • Nanoscale crack initiation and propagation in carbon fiber/epoxy composites using synchrotron: 3D image data. [Journal Article]
    Data Brief. 2020 Aug; 31:105894.Watanabe T, Takeichi Y, … Kimura M
  • Crack initiation and propagation in carbon fiber-reinforced plastic (CFRP) was observed in situ under the application of an opening load using nanoscopic synchrotron radiation X-ray computed tomography (nanoscopic SR X-CT) at a high spatial resolution of ∼50 nm. Two datasets of reconstructed and segmented images were produced in typical regions, namely in the thin and thick epoxy regions where th…
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