keyword
https://read.qxmd.com/read/38642499/molecular-dynamics-simulation-study-of-sodium-ion-structure-dynamics-in-water-in-ionic-liquids-electrolytes-using-1-butyl-3-methyl-imidazolium-tetrafluoroborate-and-1-butyl-3-methyl-imidazolium-hexafluorophosphate
#21
JOURNAL ARTICLE
Shrayansh Gupta, Utkarsh Gupta, Praveenkumar Sappidi
In this paper, we have performed an all-atom molecular dynamics simulation to understand the structure and dynamics of Na+ ions in water mixed Ionic liquids (Water in Ionic liquid). Two ionic liquid (IL) systems consist of (1) 1-butyl-3-methylimidazolium [BMIM] tetrafluoroborate [BF4 ] and (2) 1-butyl-3-methylimidazolium [BMIM] hexafluorophosphate [PF6 ] were considered in this work. We understand various inter- molecular structures and dynamic and thermodynamic behaviours of Na+ ions in the water- mixed IL systems...
April 16, 2024: Journal of Molecular Graphics & Modelling
https://read.qxmd.com/read/38642233/peripheral-nerve-stimulation-in-postoperative-analgesia-a-narrative-review
#22
REVIEW
Alan D Kaye, Taylor R Plaisance, Summer A Smith, Amanda R Ragland, Michael J Alfred, Catherine G Nguyen, Azem A Chami, Saurabh Kataria, Kylie Dufrene, Sahar Shekoohi, Christopher L Robinson
PURPOSE OF REVIEW: Recent research has shown the effectiveness of peripheral nerve stimulators (PNS) in managing chronic pain conditions. Ongoing studies aim to explore its potential application in treating acute postoperative pain states. The purpose of this systematic review is to assess the role of PNS in providing relief for postoperative pain. RECENT FINDINGS: Clinical studies investigating the use of peripheral nerve stimulators (PNS) for analgesia following various surgeries, such as total knee arthroplasty, anterior cruciate ligament repair, ankle arthroplasty, rotator cuff repair, hallux valgus correction, and extremity amputation, have shown promising results...
April 20, 2024: Current Pain and Headache Reports
https://read.qxmd.com/read/38642124/intramedullary-versus-plate-fixation-of-both-bone-forearm-fractures-in-skeletally-immature-patients-a-systematic-review-and-meta-analysis
#23
REVIEW
Ahmed Mohamed Ahmed, Elsayed Said, Ahmad Addosooki, Hossam Ahmed Attya, Ahmad Khairy Awad, Emad Hamdy Ahmed, Hamdy Tammam
BACKGROUND: Both bone forearm fractures (BBFFs) are a common injury amongst the pediatric population. The main indications of surgical fixation are open, irreducible, or unstable fractures. The two most commonly used surgical techniques are closed or open reduction with intramedullary fixation (IMF) and open reduction with plate fixation (PF). The aim of this systematic review and meta-analysis was to determine which fixation method is superior for BBFFs. METHODS: PubMed, Scopus, Web of Science, and CENTRAL were searched to identify studies comparing IMF and PF...
April 20, 2024: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://read.qxmd.com/read/38642122/a-prospective-randomized-control-trial-comparing-outcomes-of-casting-pinning-and-plating-for-distal-end-of-radius-fractures-ao-type-a2-a3-c1-or-c2-in-the-elderly-population
#24
JOURNAL ARTICLE
Owais Ahmed, Pradeep Balakrishnan, Ramesh Perumal, Devendra Agraharam, Purnaganapathi Sundaram Velmurugesan, Dheenadhayalan Jayaramaraju, Shanmuganathan Rajasekaran
PURPOSE: With this prospective randomized control trial (RCT), we aim to provide the outcome analyses of the three most used treatment modalities for distal end of radius (DER) fracture management in the elderly. METHODS: A prospective randomized control trial was performed. Fifty-two patients with DER fractures (AO A2, A3, C1, or C2) were randomized to the casting (n = 17), percutaneous pinning (n = 18), and the volar plating group (n = 17)...
April 20, 2024: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://read.qxmd.com/read/38641934/timing-of-surgery-in-peripheral-nerve-injury-of-the-upper-extremity
#25
REVIEW
Nicola Felici, Alice Alban
Peripheral nerve injuries present a complex clinical challenge, requiring a nuanced approach in surgical management. The consequences of injury vary, with sometimes severe disability, and a risk of lifelong pain for the individual. For late management, the choice of surgical techniques available range from neurolysis and nerve grafting to tendon and nerve transfers. The choice of technique utilized demands an in-depth understanding of the anatomy, patient demographics and the time elapsed since injury for optimized outcomes...
April 20, 2024: Journal of Hand Surgery, European Volume
https://read.qxmd.com/read/38641712/using-calcaneal-plates-in-fixation-of-comminuted-posterior-wall-acetabular-fractures-with-cranial-or-posterior-extension-a-prospective-case-series-and-novel-technique
#26
JOURNAL ARTICLE
Mahmoud Fahmy, Ebeed Yasin, Mohamed Abdelmoneim
BACKGROUND: This study aims to evaluate the outcomes of using calcaneal plate in fixation of comminuted posterior wall (PW) acetabular fractures especially that have cranial (dome) or posterior extension (posterior column edge), and to evaluate its safety. To our knowledge, this is the first study that utilizes this off label implant technique in fixation of such fracture. METHODS: Twenty-two patients enrolled in the study with a minimum follow up of one year. After reducing the PW fragments sequentially, calcaneal plate was applied, fixing its distal part at ischial tuberosity upper ends using 3 screws in a triangular fashion, while its proximal part and radial wings were firmly fixed along the acetabular rim together with the classic longitudinal anchorage...
April 20, 2024: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://read.qxmd.com/read/38641692/prediction-of-potentially-toxic-elements-in-water-resources-using-mlp-nn-rbf-nn-and-anfis-a-comprehensive-review
#27
REVIEW
Johnson C Agbasi, Johnbosco C Egbueri
Water resources are constantly threatened by pollution of potentially toxic elements (PTEs). In efforts to monitor and mitigate PTEs pollution in water resources, machine learning (ML) algorithms have been utilized to predict them. However, review studies have not paid attention to the suitability of input variables utilized for PTE prediction. Therefore, the present review analyzed studies that employed three ML algorithms: MLP-NN (multilayer perceptron neural network), RBF-NN (radial basis function neural network), and ANFIS (adaptive neuro-fuzzy inference system) to predict PTEs in water...
April 20, 2024: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38641268/development-and-performance-evaluation-of-a-novel-elastic-bacterial-nanocellulose-polyurethane-small-caliber-artificial-blood-vessels
#28
JOURNAL ARTICLE
Geli Li, Luhan Bao, Gaoquan Hu, Lin Chen, Xingping Zhou, Feng F Hong
There is an increasing demand for small-diameter blood vessels. Currently, there is no clinically available small-diameter artificial vessel. Bacterial nanocellulose (BNC) has vast potential for applications in artificial blood vessels due to its good biocompatibility. At the same time, medical polyurethane (PU) is a highly elastic polymer material widely used in artificial blood vessels. This study reports a composite small-diameter BNC/PU conduit using a non-solvent-induced phase separation method with the highly hydrophilic BNC tube as the skeleton and the hydrophobic polycarbonate PU as the filling material...
April 17, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38640928/kinetic-cooperativity-resolves-bidirectional-clogging-within-the-nuclear-pore-complex
#29
JOURNAL ARTICLE
Tiantian Zheng, Anton Zilman
As the main gatekeeper of the nucleocytoplasmic transport in eukaryotic cells, the nuclear pore complex (NPC) faces the daunting task of facilitating the bidirectional transport of a high volume of macromolecular cargoes while ensuring the selectivity, speed, and efficiency of this process. The competition between opposing nuclear import and export fluxes passing through the same channel is expected to pose a major challenge to transport efficiency. It has been suggested that phase separation-like radial segregation of import and export fluxes within the assembly of intrinsically disordered proteins that line the NPC pore could be a mechanism for ensuring efficient bidirectional transport...
April 10, 2024: Biophysical Journal
https://read.qxmd.com/read/38640920/effects-of-as8-structure-formation-on-the-surface-morphology-and-internal-microstructure-of-gaas-thin-films
#30
JOURNAL ARTICLE
Wenwen Tian, Qian Chen, Zhetian Bian, Yue Gao, Quan Xie, Tinghong Gao
Gallium arsenide (GaAs) materials have the advantages of high electron mobility, electron saturation drift rate, and other irreplaceable semiconducting properties. They play an important role in the electronics, solar and other fields. However, during GaAs film sedimentary growth, As atoms can undergo segregation to form As8 clusters because of the influence of external factors, which affect the surface morphology and internal structure of these films. In this study, a series of investigations on the deposition and growth of GaAs crystal films were performed...
April 19, 2024: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://read.qxmd.com/read/38640286/acute-blockage-of-forearm-supination-due-to-flap-tear-of-the-triangular-fibrocartilage-disc-a-case-report
#31
JOURNAL ARTICLE
Ji Woong Ho, Jee Yune Kim, Young-Keun Lee
RATIONALE: Acute blockage of forearm supination has been reported in several studies. It is caused by loose bodies in the wrist joint, extensor carpi ulnaris tendon interposition, and distal radioulnar joint (DRUJ) injuries, including forearm bone fractures. Some studies have reported cases of DRUJ injuries caused by triangular fibrocartilage complex (TFCC) tears.We report a case of acute blockage of forearm supination after minor trauma and suggest a possible TFCC tear when a patient complains of forearm supination blocking...
April 19, 2024: Medicine (Baltimore)
https://read.qxmd.com/read/38639779/do-balloon-catheters-have-a-different-radial-force-along-their-longitudinal-axis
#32
JOURNAL ARTICLE
Tae Won Choi, Jinoo Kim, Je Hwan Won
PURPOSE: This experimental study was designed to compare radial forces between the central portion and both ends of balloon catheters when dilating stenosis. MATERIALS AND METHODS: Three balloon catheters of 6 and 8 mm in diameter and of variable length were tested: Mustang, Conquest, and Genoss PTA. Cylindrical modules to position balloon catheters and install the measuring tip during radial force measurements were made using a 3D printer. The measuring tip created 20% stenosis at the inner lumen...
April 19, 2024: Cardiovascular and Interventional Radiology
https://read.qxmd.com/read/38638820/cfd-simulation-of-silica-dispersion-natural-rubber-latex-mixing-for-high-silica-content-rubber-composite-production
#33
JOURNAL ARTICLE
Ekaroek Phumnok, Phonsan Saetiao, Panut Bumphenkiattikul, Sukrittira Rattanawilai, Parinya Khongprom
High silica contents rubber composites are favored in the green tire industry for their ability to reduce rolling resistance. However, achieving effective silica dispersion in natural rubber, particularly at high silica content, poses a challenge. In addition, the choice of impeller configuration significantly influences mixing performance, especially in commercial production, which requires large mixing tanks. Therefore, understanding the scaling-up process for this mixing system is essential. This research aims to investigate the mixing of silica dispersion in natural latex, specifically focusing on a high silica content regime...
April 16, 2024: RSC Advances
https://read.qxmd.com/read/38638747/macular-and-optic-disc-perfusion-changes-after-silicone-oil-removal-using-optical-coherence-tomography-angiography-a-prospective-study
#34
JOURNAL ARTICLE
Christina Karakosta, Vassilios S Verykios, Georgios Feretzakis, Christina Kourentis
AIM: The aim of this study was to prospectively evaluate the changes in macular and optic disc microvascular structures in patients who underwent silicone oil (SO) removal. MATERIALS AND METHODS: A total of 28 patients scheduled for unilateral SO removal were included in the study. Their fellow eyes served as controls. Optical coherence tomography angiography (OCTA) of the retina (6.0 mm) and disc (4.5 mm) was performed one day before SO removal, and then at 1 week and 1, 3, 6, and 12 months postoperatively...
March 2024: Curēus
https://read.qxmd.com/read/38638490/visualization-modality-for-augmented-reality-guidance-of-in-depth-tumour-enucleation-procedures
#35
JOURNAL ARTICLE
Nadia Cattari, Fabrizio Cutolo, Luciana La Placa, Vincenzo Ferrari
Recent research studies reported that the employment of wearable augmented reality (AR) systems such as head-mounted displays for the in situ visualisation of ultrasound (US) images can improve the outcomes of US-guided biopsies through reduced procedure completion times and improved accuracy. Here, the authors continue in the direction of recent developments and present the first AR system for guiding an in-depth tumour enucleation procedure under US guidance. The system features an innovative visualisation modality with cutting trajectories that 'sink' into the tissue according to the depth reached by the electric scalpel, tracked in real-time, and a virtual-to-virtual alignment between the scalpel's tip and the trajectory...
2024: Healthcare Technology Letters
https://read.qxmd.com/read/38638299/abnormal-cell-sorting-and-altered-early-neurogenesis-in-a-human-cortical-organoid-model-of-protocadherin-19-clustering-epilepsy
#36
JOURNAL ARTICLE
Wei Niu, Lu Deng, Sandra P Mojica-Perez, Andrew M Tidball, Roksolana Sudyk, Kyle Stokes, Jack M Parent
INTRODUCTION: Protocadherin-19 ( PCDH19 )-Clustering Epilepsy (PCE) is a developmental and epileptic encephalopathy caused by loss-of-function variants of the PCDH19 gene on the X-chromosome. PCE affects females and mosaic males while male carriers are largely spared. Mosaic expression of the cell adhesion molecule PCDH19 due to random X-chromosome inactivation is thought to impair cell-cell interactions between mutant and wild type PCDH19 -expressing cells to produce the disease. Progress has been made in understanding PCE using rodent models or patient induced pluripotent stem cells (iPSCs)...
2024: Frontiers in Cellular Neuroscience
https://read.qxmd.com/read/38638221/two-dimensional-radial-%C3%AF-stacks-in-solution
#37
JOURNAL ARTICLE
Feng Su, Yongseok Hong, Guilan Zhang, Kongchuan Wu, Juno Kim, Zhi Chen, Hui-Jun Zhang, Dongho Kim, Jianbin Lin
Highly organized π-aggregate architectures can strongly affect electronic couplings, leading to important photophysical behaviors. With the escalating interest in two-dimensional (2D) materials attributed to their exceptional electronic and optical characteristics, there is growing anticipation that 2D radial-π-stacks built upon radial π-conjugation nanorings, incorporating intra- and inter-ring electronic couplings within the confines of a 2D plane, will exhibit superior topological attributes and distinct properties...
April 17, 2024: Chemical Science
https://read.qxmd.com/read/38637554/convolutional-neural-networks-develop-major-organizational-principles-of-early-visual-cortex-when-enhanced-with-retinal-sampling
#38
JOURNAL ARTICLE
Danny da Costa, Lukas Kornemann, Rainer Goebel, Mario Senden
Primate visual cortex exhibits key organizational principles: cortical magnification, eccentricity-dependent receptive field size and spatial frequency tuning as well as radial bias. We provide compelling evidence that these principles arise from the interplay of the non-uniform distribution of retinal ganglion cells, and a quasi-uniform convergence rate from the retina to the cortex. We show that convolutional neural networks outfitted with a retinal sampling layer, which resamples images according to retinal ganglion cell density, develop these organizational principles...
April 18, 2024: Scientific Reports
https://read.qxmd.com/read/38637415/superficial-branch-of-the-radial-nerve-passing-through-the-supinator-canal-emerging-between-the-extensor-digitorum-and-abductor-pollicis-longus-muscles-and-consequently-supplying-the-second-finger-and-radial-portion-of-the-third-finger-a-case-report-and-clinical
#39
JOURNAL ARTICLE
Anhelina Khadanovich, Michal Benes, Radek Kaiser, David Kachlik
Awareness of unique path of the superficial branch of the radial nerve and its unusual sensory distribution can help avoid potential diagnostic confusion. We present a unique case encountered during a routine dissection of a Central European male cadaver. An unusual course of the superficial branch of the radial nerve was found in the right forearm, where the superficial branch of the radial nerve originated from the radial nerve distally, within the supinator canal, emerged between the extensor digitorum and abductor pollicis longus muscles and supplied the second and a radial half of the third digit, featuring communications with the lateral antebrachial cutaneous nerve and the dorsal branch of the ulnar nerve...
April 18, 2024: Surgical and Radiologic Anatomy: SRA
https://read.qxmd.com/read/38637341/exploring-the-intersection-of-tuberous-sclerosis-and-precocious-puberty-unveiled-by-hematocolpos
#40
JOURNAL ARTICLE
Ramandeep Singh, Sameer Peer, Arvinder Wander
We present the case of a 6-year-old girl who initially presented with acute pelvic pain, ultimately diagnosed with imperforate hymen leading to hematocolpos. Further investigation revealed additional clinical features including academic struggles, mood swings, and cutaneous findings, prompting consideration of a neurocutaneous syndrome. Magnetic Resonance Imaging (MRI) revealed features consistent with tuberous sclerosis complex (TSC), including radial migration lines in the subcortical white matter and an incidental arachnoid cyst...
April 19, 2024: Neurological Sciences
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