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Diagnostic capabilities of cardiac computed tomography in the preoperative diagnosis of hypertrophic cardiomyopathy
Published 2024-12-01“…The implementation of innovative technologies and computer calculation using next-generation scanners may become relevant and promising in studying various phenotypes of left ventricular remodeling in combination with abnormalities of the chordopapillary apparatus of the mitral valve and myocardial structure. AIM: To examine the diagnostic capabilities of computed tomography in the preoperative examination of various hypertrophic cardiomyopathy phenotypes. …”
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Numerical Investigation of the Applicability of Low-Pressure Exhaust Gas Recirculation Combined with Variable Compression Ratio in a Marine Two-Stroke Dual-Fuel Engine and Performa...
Published 2025-04-01“…In this paper, a novel technical route, namely combining the low-pressure exhaust gas recirculation (LP-EGR) and variable compression ratio (VCR), is proposed to address the inferior fuel economy for marine dual-fuel engines of low-pressure gas injection in diesel mode. …”
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Small cuts, big questions: the impact of incision length in minimally invasive robotic cardiac surgery
Published 2025-06-01“…IntroductionEvidence on incision lengths for ports and cardiopulmonary bypass (CPB) cannulation in robotic cardiac surgery is limited. This study aimed to assess these metrics and influencing factors.Methods204 patients underwent robotic mitral valve repair (MVR) (54.9%), totally endoscopic coronary artery bypass grafting (TECAB) (30.9%), and minimally invasive direct coronary artery bypass grafting (MIDCAB) (14.2%). …”
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A Review of Pressure Regulation Technologies for Irrigation Pipeline Systems
Published 2025-07-01Get full text
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Sensor Location for Hydraulic Transient Monitoring and Leakage Location
Published 2024-10-01“…This study evaluates the pressure signal during valve closures to identify optimal monitoring points and valve operation rules, aiming to maximize information collection during transients. …”
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Application Advances and Prospects of Ejector Technologies in the Field of Rail Transit Driven by Energy Conservation and Energy Transition
Published 2025-07-01“…This paper reviewed the recent advances, technical challenges, research hotspots, and future development directions of ejector applications in rail transit, aiming to address gaps in existing reviews. (1) In waste heat recovery, exhaust heat is utilized for propulsion in vehicle ejector refrigeration air conditioning systems, resulting in energy consumption being reduced by 12~17%. (2) In vehicle pneumatic pressure reduction systems, the throttle valve is replaced with an ejector, leading to an output power increase of more than 13% and providing support for zero-emission new energy vehicle applications. (3) In hydrogen supply systems, hydrogen recirculation efficiency exceeding 68.5% is achieved in fuel cells using multi-nozzle ejector technology. (4) Ejector-based active flow control enables precise ± 20 N dynamic pantograph lift adjustment at 300 km/h. …”
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Desenvolvimento de um sistema para o controle do pH da água para microirrigação Development of a system for control of water pH for microirrigation
Published 2011-02-01“…The water pH control system has a device for acid injection controlled by a solenoid valve. This valve is switched on by electric pulses from a microcontroller. …”
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Control of Carbon Dioxide Bivalent Heat Pump on Heating of Buildings
Published 2024-04-01“…The scheme of a bivalent heat pump (BHP) is considered, using both the heat of the water from the return network and the heat of the outside air as low-potential heat sources (LPH). The aim of the work is to create a BHP circuit that provides functioning at the variable heat load temperature. …”
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Numerical Study of the Influence of Blood Viscosity on Aortic Blood Flow with Left Ventricular Assistance Support Pump
Published 2025-07-01“…However, LVAD implantation may lead to complications such as an increased risk of stroke, thrombus formation, and reverse flow through the aortic valve. This study aims to numerically investigate a section of the aorta coupled to a LVAD pump, using computational fluid dynamics. …”
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Multi-Temperature Heat Pump with Cascade Compressor Connection
Published 2017-08-01“…The obtained technical solution ensures the stabilization of the heat pump coefficient of performance (COP) and prescribed thermal regimes of heat exchangers at a variable flow rate of the refrigerant. The novelty of the elaboration is inclusion a compressor of the first stage with a serially connected intermediate heat exchanger and a control valve that are located before the compressor inlet of the second stage of the heat pump, which allows to establish a rational pressure after the first stage of the compressors. …”
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Development and validation of an integrated prognostic model for all-cause mortality in heart failure: a comprehensive analysis combining clinical, electrocardiographic, and echoca...
Published 2025-03-01“…Random survival forest analysis was conducted to validate variable importance. Results During a median follow-up of 4.14 years, 142 deaths (31.91%) occurred. …”
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Clinical and prognostic significance of left ventricular dysfunction predictors in patients with ventricular ectopy and without structural heart disease
Published 2023-09-01“…Aim. To determine the predictors of left ventricular dysfunction in patients with ventricular ectopic beats without structural heart disease.Material and Methods. …”
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A novel nomogram for predicting the implementation of ultra-fast-track cardiac anesthesia for minimally invasive cardiac surgery
Published 2025-07-01“…However, research on the factors influencing UFTCA implementation remains limited. This study aimed to identify predictors of UFTCA in right-thoracoscopic minimally invasive cardiac surgery (MICS) and develop a nomogram to predict UFTCA implementation. …”
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Rheumatic Valvulopathy in Sub-Saharan Africa: A Cross-Sectional Study of Cameroonian Urban Schools
Published 2025-03-01“…Objective: This study aimed to describe rheumatic valvulopathy among schoolchildren and adolescents in Yaoundé, Cameroon. …”
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Post-carvedilol myocardial function in cats with obstructive hypertrophic cardiomyopathy
Published 2025-03-01“…In addition to conventional echocardiography, strain and strain rates in the left ventricular longitudinal and circumferential directions were measured using layer-specific two-dimensional speckle tracking echocardiography. Each variable was then compared before and after carvedilol medication.ResultsSystolic anterior motion of the mitral valve disappeared in 14 cats and all cats showed resolved DLVOTO with maximal left ventricular outflow tract blood flow velocity of <2.5 m/s after carvedilol administration (P < 0.01). …”
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Nomogram for Predicting 1‐, 3‐, and 5‐Year Survival in Hemodynamically Significant Aortic Regurgitation: The ARISE Score
Published 2025-05-01“…We aimed to develop and validate a nomogram‐based score to predict survival and identify high‐risk patients for timely aortic valve surgery referral. …”
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Infective endocarditis in injection drug users: disease course, diagnostic and clinical aspects (clinical case analysis)
Published 2024-12-01“…On the 21st day of treatment, the patient underwent tricuspid valve replacement surgery with a biological prosthesis and multicomponent reconstruction of the mitral valve, the postoperative period was complicated by the development of exudative pericarditis.Results. …”
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Elevated blood pressure and risk of mitral regurgitation: A longitudinal cohort study of 5.5 million United Kingdom adults.
Published 2017-10-01“…About 5.5 million UK patients with no known cardiovascular or valve disease at baseline were included in this cohort study. …”
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Early prediction of 30-day mortality in patients with surgical wound infections following cardiothoracic surgery: Development and validation of the SWICS-30 score utilizing convent...
Published 2025-03-01“…The SWICS-30 logistic regression score comprised the following variables: age over 65 years, undergoing valve heart surgery, combined coronary and valve heart surgery, heart transplantation, time from surgery to infection diagnosis exceeding 21 days, leukocyte count over 13,000/mm3, lymphocyte count below 1000/mm3, platelet count below 150,000/mm3, and creatinine level exceeding 1.5 mg/dL. …”
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