Background: There is currently no consensus on the usefulness of postoperative imaging after ventriculoperitoneal (VP) shunt insertion in adults. The aim of this study was to investigate the utility of routine postoperative imaging (CT head scans and radiographs) following primary VP shunt insertion in a general adult population treated at a tertiary neurosurgical centre.
Methods: Patients undergoing primary VP shunt insertion between 2017-2021 were included.
Background: Achieving optimal marginal fit is essential for the success of Virgilite Based Lithium Disilicate Ceramic crowns.
Materials And Methods: In this study, we compared the marginal fit of Virgilite Based Lithium Disilicate Ceramic crowns using two different CAD/CAM scanners, powder free (System A, Omnicam) and powder based (System B, Blue cam).
Results: The mean marginal gap for System A was found to be 63.
Superhydrophobic and superoleophilic meshes have gained considerable attention in oil/water separation in recent years. To fabricate such meshes, surface roughness features can be introduced, and the surface free energy can be lowered, preferably, by utilizing low cost, safe, and readily available materials. Herein, we report a novel approach for fabricating a superhydrophobic copper mesh using low-cost carbon nanoparticles embedded within surface micropatterns.
View Article and Find Full Text PDFBackground: Professional drivers in Saudi Arabia may be at increased risk for mental illness because of their expatriate status, long driving hours, and unhealthy lifestyles.
Objective: To assess the prevalence and correlates of depressive symptoms among professional drivers in Saudi Arabia, most of whom are expatriates.
Methods: Professional drivers (n = 324) were interviewed after convenient sampling of transportation companies.
Background Sudden infant death syndrome (SIDS) refers to the unexpected and unexplained death of a child under one year old. The pathogenesis of SIDS remains unclear. However, certain factors such as the child's sleeping position, sleeping on a soft mattress, and maternal smoking have been suggested to contribute to its occurrence.
View Article and Find Full Text PDFHigh repetition coherent extreme ultraviolet (XUV) harmonics offer a powerful tool for investigating electron dynamics and understanding the underlying physics in a wide range of systems. We demonstrate the utilization of combined three-color (ω+2ω+3ω) laser fields in the generation of coherent extreme ultraviolet radiation in mixed noble gases. The three-color field results from the combination of fundamental, second-, and third-order harmonics of the near-infrared laser pulses in the nonlinear crystals.
View Article and Find Full Text PDFLaser processing is a simple way to obtain hydrophobic or even superhydrophobic properties of metal surfaces. However, preparation of superhydrophilic surfaces by this method, the properties of which do not change under the influence of various factors, remains a difficult task. In this work, we show that with increasing laser power, the degree of oxidation of the treated metal surface also increases.
View Article and Find Full Text PDFAfter surgical treatment of Charcot neuro-osteoarthropathy (CNO) complicated by plantar ulcer and midtarsal osteomyelitis, offloading is mandatory to protect the surgical site. Total contact casting is, to date, the standard-of-care to offload the foot during the postoperative period. We have compared the application of external circular fixator, to the standard of care, with regard to surgical wound healing and time to healing.
View Article and Find Full Text PDFKey Clinical Message: Actinmomycetma is a granulomatous infection with a presentation was very similar to osteosarccoma. Multidisciplinary team and triple assessments are extremely important to prevent misdiagnosis, surgical treatment in combination with medical treatment followed by regular clinical and radiological follow-up can be a limb-saving procedure in such cases.
Abstract: Various conditions may mimic osteosarcoma.
The COVID-19 pandemic is a major health care catastrophe that affects people's physical and mental well-being worldwide. Medical students are at an increased risk of mental health hazards during the COVID-19 pandemic. Sulaiman Al Rajhi University (SRU), the site of our study, is located in Qassim province in the Kingdom of Saudi Arabia.
View Article and Find Full Text PDFWe investigate the evolution mechanisms of the laser-induced periodic surface structures (LIPSS) and quasi-periodic grooves that are formed on the surface of monocrystalline silicon (mono-Si) when exposed to femtosecond laser radiation of different pulse duration, state of polarization, and fluence. The conditions required for producing LIPSS-free complex micro-ridge patterns are elaborated. The LIPSS evolution mechanism is explained in terms of scattering/interference-based phenomena.
View Article and Find Full Text PDFWe report a robust two-step method for developing adherent and anticorrosive molybdenum (Mo)-based coatings over an aluminum (Al) 6061 alloy substrate using a femtosecond (fs) laser. The fs laser nanostructuring of Al 6061 alloy in air gives rise to regular arrays of microgrooves exhibiting superhydrophilic surface properties. The microstructured surface is further coated with an Mo layer using the fs-pulsed laser deposition (fs-PLD) technique.
View Article and Find Full Text PDFA two-step femtosecond-pulsed laser deposition (fs-PLD) process is reported for the rapid development of uniform, poreless, crack-free, and well-adhering amorphous coatings of source materials with a high melting point. The first step comprises a high-rate raw deposition of the source material via fs-PLD, followed by a second step of scanning the raw sample with fs laser pulses of optimized fluence and scan parameters. The technique is applied to develop substoichiometric molybdenum oxide (MoO, x < 3) coatings on mild steel.
View Article and Find Full Text PDFOne of the important aspects of manipulating and controlling liquid transport is the design of membrane surfaces. Janus membranes with opposite wettability characteristics can be manufactured for efficient directional water transfer. In this work, two types of materials were used to fabricate membranes with an asymmetric wettability behavior: copper foam and copper mesh.
View Article and Find Full Text PDFBackground: Herniated lumbar disc is one of the common causes of back pain. Discectomy provides rapid relief of back pain and radicular pain. Few studies have been done in our setting to look for the outcome of discectomy.
View Article and Find Full Text PDFA 17-year-old male was ejected from the motorcycle and brought to the Emergency Department with bilateral hip dislocation and absence of pelvic or femur fractures or sciatic nerve injury. Closed reduction and postreduction examination were performed with a bilateral stable full range of motion in all directions.
View Article and Find Full Text PDFBackground: Prior studies have shown that decompressive craniectomy may be an independent risk factor for the development of post-traumatic hydrocephalus (PTH). It is upon this background that we chose to conduct our single-center retrospective study to establish the possibility of an association between decompressive craniectomy and PTH.
Methods: A retrospective review involving a database of all patients with traumatic brain injury was undertaken.
The generation of laser-induced plasma at the gas-liquid interface provides many fundamental and interesting scientific phenomena such as ionization, sharp explosion, shock wave radiation, bubble creation, and water splitting. However, despite the extensive research in this area, there is no reference on the effect of the surrounding environment on the chemical processes that occur during the laser-induced plasma-water interaction. In this work, we investigate the effect of the surrounding gas environment on femtosecond laser-induced plasma when generated at the pure water-gas interface.
View Article and Find Full Text PDFMixed (FAPbI3).(MAPbBr3). perovskite thin films exhibit strong nonlinear optical responses, rendering them promising candidates for applications in photonics and optical communications.
View Article and Find Full Text PDFUltrafast laser structuring has proven to alter the wettability performance of surfaces drastically due to controlled modification of the surface roughness and energy. Surface alteration can be achieved also by coating the surfaces with functional materials with enhanced durability. On this line, robust and tunable surface wettability performance can be achieved by the synergic effects of ultrafast laser structuring and coating.
View Article and Find Full Text PDFBackground: Mycetoma is the most common neglected disease in humans. It is a chronic, progressive, and destructive disease primarily caused by fungi or bacteria characterized by formation of dark pale grains commonly involve skin, soft tissue and rarely bone.
Case Presentation: A 19 year old male patient with chronic right ankle pain, swelling and abscess formation for more than 1 year, patient was treated repeatedly with incision and drainage without any success.
Evidence suggests that professional drivers are at risk for venous thromboembolism (VTE), a life-threatening yet preventable disease. Awareness of VTE among this population has not been assessed in the Middle East. The study aimed to assess professional drivers' awareness of VTE and attitudes toward VTE preventive measures.
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