A gas-lifted system in a mature oil well can experience casing-heading instability, which reduces the mean oil production and it is not healthy for the downstream equipment. This instability was removed by implementing a terminal equality-constrained...
Background/Objectives: According to the modified Mason classification, radial head fractures can be treated with open reduction and internal fixation (ORIF), radial head arthroplasty, or resection. This study by the Department of Traumatology and Ort...
The purpose of this study was to investigate mid-term outcomes and complications after operative treatment according to a standardized protocol for terrible triad injuries. Twenty-four patients that were treated by a single surgeon with a standardize...
Post-traumatic rotational instability at the atlanto-axial (C1-2) joint is difficult to assess, much less quantify, due to the orientation and motion plane of the joint. Prior investigations have demonstrated that a dynamic axial CT scan, during whic...
Background: Radial head arthroplasty is commonly used for unreconstructable radial head fractures, particularly in cases associated with elbow instability. Both loose-fit monobloc and cemented bipolar radial head prostheses are available, but compara...
Injury to the head and neck resulting from whiplash trauma can result in upper cervical instability (UCIS), in which excessive movement at C1 on C2 is observed radiologically. In some cases of UCIS there is also a loss of normal cervical lordosis. We...
Atlantoaxial dislocation (AAD) or subluxation (AAS) is a potentially life-threatening disorder caused by instability between the atlas and axis. Typical symptoms include neck pain, torticollis, and neurological deficits, but dizziness has rarely been...
4 March 2024
This study aimed to compare the diagnostic efficacy of the Halmágyi–Curthoys head impulse (thrust) test and Romberg’s test in detecting vestibular hypofunctioning among two groups of 50 vertigo patients each; the two groups were randomly assigned. Th...
Startup transients are critical in gas generator cycle liquid rocket engines because pressure overshoot, mixture-ratio excursions, and turbopump instability can occur before steady operation. This study compares conventional pyrostarter and tank head...
Background/Objectives: Vertical ridge augmentation remains a challenging procedure in alveolar bone reconstruction, with existing techniques often limited by surgical complexity, graft instability, and high resorption rates. This study evaluates the...
We performed a retrospective analysis of angiosarcoma (AS) genomic biomarkers and their associations with the site of origin in a cohort of 143 cases. Primary sites were head and neck (31%), breast (22%), extremity (11%), viscera (20%), skin at other...
Adult rhabdomyosarcoma (RMS) represents an uncommon entity with an incidence of less than 3% of all soft tissue sarcomas (STS). Consequently, the natural history and the clinical management of this disease are infrequently reported. In order to fill...
Background/Objectives: Instability without component loosening is a leading indication for revision total knee arthroplasty (TKA), yet no preoperative radiographic marker of this outcome has been validated. We examined whether preoperative fibula&nda...
Background/Objectives: Chronic injuries of the radial collateral ligament (RCL) of the thumb metacarpophalangeal (TMCP) joint are becoming an increasingly common clinical challenge. In cases without degenerative changes, surgical treatment with ligam...
Recurrent/metastatic (R/M) head and neck cancers bear a poor prognosis. In this analysis, we examined the efficacy and the outcome of targeted therapy recommendations based on the patients’ molecular tumor portrait after failure of all standard...
Monopile foundations are extensively utilized in the rapidly expanding offshore wind power industry, and the stability of these foundations has become a crucial factor for ensuring the safety of offshore wind power projects. Such foundations are subj...
Common quantitative assessments of neck injury criteria do not predict anatomical neck injuries and lack direct relations to design parameters of whiplash-protection systems. This study aims to provide insights into potential soft tissue-level injury...
This study aims to investigate the interactions appearing when the beta-2-glycoprotein-1 binds to a lipid bilayer. The inter- and intra-molecular forces acting between the two macromolecular systems have been investigated using a molecular dynamics s...
The stability of axial flow pumps is significantly affected by the tip leakage vortex (TLV), which is generated through the entrainment of the main flow. This study explores the effects of circumferential grooving in the rotor chamber on the tip leak...
Background/Objectives: Vestibular evoked myogenic potentials (VEMPs) and the video head impulse test (vHIT) enable receptor-specific assessment of otolithic organs and semicircular canals. Their increasing use has revealed selective or apparently iso...
18 December 2023
A growing significance of flexible steam turbine operation challenges the control of turbines, as part load operation using control valves can be accompanied by highly unsteady flow conditions. The increased dynamic load induced by pressure forces ca...
Background and Objectives: Post-traumatic elbow stiffness is a disabling condition often resulting from a combination of capsular contracture, osseous impingement, and residual instability, rendering it exceptionally challenging to treat. The aim of...
Background/Objectives: Recurrent acute otitis media (rAOM) is a common disease in childhood, but its impact on the vestibular system remains poorly understood. The present study aimed to evaluate the long-term effects of rAOM on balance and vestibula...
Numerous pan-genomic studies identified alterations in protein-coding genes and signaling pathways involved in bladder carcinogenesis, while non-coding somatic alterations remain weakly explored. The goal of this study was to identify clinical biomar...
Squeezed branch piles, originally developed for building and bridge foundations, have been downsized and deployed at larger pile spacing for reinforcing embankments over soft soils. However, the working mechanism of squeezed branch pile-supported emb...
To investigate the influence of injector recess depth on the combustion characteristics of air heaters, high-speed shadowgraph imaging technology combined with numerical simulation was employed. Targeting a tripropellant coaxial direct-flow single in...
The focus of this work is the extension of nonlinear state estimation methods to gas-lifted systems. The extended Kalman filter (EKF), unscented Kalman filter (UKF) and particle filter (PF) were used to estimate the nonlinear states. Brief descriptio...
This work systematically quantifies groundwater’s effect on the roof stability of underground openings in shallow coal mines and indirectly assesses the potential for sinkhole formation. A specific stratigraphy was analyzed where the opening in...
Model simulation and control of pumped storage unit (PSU) are essential to improve the dynamic quality of power station. Only under the premise of the PSU models reflecting the actual transient process, the novel control method can be properly applie...
Background/Objectives: Behçet’s disease is a chronic relapsing multisystem inflammatory disorder characterized by recurrent mucocutaneous ulceration, vasculitis, and exaggerated inflammatory responses to minor trauma. These features may...
This paper presents a simplified methodology for the design of jet-grouted bottom sealing barriers (temporary water-tightness structures) for deep excavations that was undertaken in deep aquifers. The bottom sealing barriers are usually required to p...
Unstable guide vane torsional mode self-excited vibrations that occur at small guide vane openings during the transient operations with pump flow, such as the starting and closing of the pump mode, are considered to have potentially severe consequenc...
Background and Objectives: There have been numerous advances in spine surgery for metastatic spinal tumors, and minimally invasive spine stabilization (MISt) is becoming increasingly popular in Japan. MISt is a minimally invasive fixation procedure t...
In pump-turbines, high pressure fluctuation is one of the crucial instabilities, which is harmful to the stable and effective operation of the entire unit. Extensive studies have been carried out to investigate pressure fluctuations (amplitude and fr...
Oral cancer is emerging as a major cause of mortality globally. Oral cancer occupies a significant proportion of the head and neck, including the cheeks, tongue, and oral cavity. Conventional methods in the treatment of cancer involve surgery, radiot...
The steering system plays a critical role in the vehicle’s handling and directly influences its lateral dynamics. Faults or abnormal behavior in this system can affect performance, cause vehicle instability, and even lead to accidents. Therefor...
The groundwater inverse problem has several challenges such as instability, non-uniqueness, and complexity, especially for heterogeneous aquifers. Solving the inverse problem is the traditional way to calibrate models, but it is both time-consuming a...
Background: Accurate three-dimensional positioning of dental implants is fundamental for long-term prosthetic success. While static guided surgery and traditional dynamic navigation present intrinsic limitations related to physical bulk or hand–eye c...
A Holstein-Fresian calf with multiple congenital malformations was subjected postmortem to anatomical and genetic investigation. The calf was small (20 kg), had shortened limbs and was unable to stand up. It lived only 44 days. Detailed anatomical in...
Background: Pheochromocytoma and paraganglioma are catecholamine-secreting tumors, rarely presenting with pheochromocytoma multisystem crisis (PMC), a life-threatening endocrine emergency. The severity of the condition includes a refractory cardiogen...
Background and Clinical Significance: Vascular lesions of the face, particularly arteriovenous malformations (AVM) and mixed hemangiomas (MH), pose significant diagnostic and therapeutic challenges because of their complex anatomy, unpredictable beha...
On the 4th and 5th of March 2005, about 100 rainfall-induced landslides occurred along volcanic slopes of Camaldoli Hill in Naples, Italy. These started as soil slips in the upper substratum of incoherent and welded volcaniclastic deposits, then evol...
Campanacci grade III giant cell tumors of the distal radius frequently require en bloc resection to achieve adequate oncologic control. Reconstruction of the resulting defect remains challenging, particularly with respect to preservation of distal ra...
Background: Displaced pediatric radial neck fractures are challenging injuries. Adequate reduction can be difficult to achieve via closed methods. Open reduction has been associated with avascular necrosis and growth arrest due to soft tissue strippi...
Purpose: The primary aim of the present study was to assess the prevalence of chronic lesions of the central band of the interosseous membrane (cbIOM) in complex elbow instability (CEI) in a consecutive series of patients who had previously undergone...
Background: Major spine surgery carries an inherent risk of hemodynamic instability due to prone positioning, significant blood loss, and the strict necessity to maintain adequate spinal cord perfusion. Hemodynamic management mainly relies on a react...
(1) Background: Cerebellar ataxia with neuropathy and vestibular areflexia syndrome (CANVAS) is characterized by late-onset cerebellar ataxia, bilateral vestibulopathy, and sensory neuronopathy mostly due to biallelic RFC1 expansion. (2) Objectives:...
The transition toward carbon-neutral energy systems has revived interest in nuclear technologies, particularly small and micro modular reactors (SMRs and MMRs) as flexible, safe and efficient alternatives to conventional large-scale power plans. In t...
Proximal tibiofibular dislocation in closing-wedge high tibial osteotomy increases the risk of medium and long-term total knee replacement. Background: High tibial osteotomy is an effective treatment for medial osteoarthritis in young patients with v...