Supaporn Roymanee^1,*, Nantawan Su-angka^1,2, Worakan Promphan^2,3,*, Kanjarut Wongwaitaweewong¹, Jirayut Jarutach¹, Rujira Buntharikpornpun¹, Pimpak Prachasilchai^2,3

Congenital Heart Disease, Vol.18, No.2, pp. 169-181, 2023, DOI:10.32604/chd.2023.021238

Abstract Background: Ventricular septal defect (VSD) is the most common congenital heart disease. Transcatheter VSD closure is an effective treatment for patients with muscular and perimembranous VSD. However, there is a limit data for outlet VSD, especially impact to the aortic valve leaflet after transcatheter closure. This study aims to assess the outcomes of transcatheter closure of the outlet-type ventricular septal defect (OVSD) after 1 postoperative year. Methods: A retrospective study was performed including 50 patients who underwent transcatheter (n = 25) and surgical (n = 25) OVSD closure during the exact time frame at two medical centres. Results: The median age and body weight… More > Graphic Abstract

Jikang Xu^1,4, Ruichuan Li^1,2,*, Yi Cheng², Yanchao Li³, Junru Yang³, Chenyu Feng⁴, Xinkai Ding², Huazhong Zhang⁵

FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.7, pp. 1817-1836, 2023, DOI:10.32604/fdmp.2023.022602

Abstract Electro-hydraulic proportional valve is the core control valve in many hydraulic systems used in agricultural and engineering machinery. To address the problem related to the large throttling losses and poor stability typically associated with these valves, here, the beneficial effects of a triangular groove structure on the related hydraulic response are studied. A mathematical model of the pressure compensation system based on the power-bond graph method is introduced, and the AMESim software is used to simulate its response. The results show that the triangular groove structure increases the jet angle and effectively compensates for the hydrodynamic force. The steady-state differential… More > Graphic Abstract

Andrei George Iosifescu^1,2,*, Roxana Enache^1,3, Ioana Marinică⁴, Corina Radu², Vlad Anton Iliescu^1,2

Congenital Heart Disease, Vol.18, No.1, pp. 67-72, 2023, DOI:10.32604/chd.2023.026598

Abstract Left main coronary compression syndrome (LMCS) may complicate pulmonary artery aneurysms (PAA), usually developed in the context of pulmonary arterial hypertension (PAH). We report the case of a 51-year-old female patient with an atrial septal defect (unsuitable for device closure) complicated by a PAA generating a 90% left main stenosis. The significant PAH held us back from immediate surgery. After specific dual PAH-targeted therapy (sildenafil and bosentan), the atrial septal defect could be closed with a unidirectional valved patch; the PAA-induced LMCS was treated by reductive arterioplasty. The postoperative course was uneventful. Follow-up showed clinical improvement, but PAH treatment was… More > Graphic Abstract

Vitaliy Suvorov^*, Vladimir Zaitsev, Nikolay Pilyugov, Olga Tereshenko, Michail Komissarov

Congenital Heart Disease, Vol.18, No.1, pp. 57-65, 2023, DOI:10.32604/chd.2023.025522

Abstract Critical aortic valve stenosis in newborns is the cause of a severe clinical condition with the onset of symptoms during first hours after birth. We present a clinical case of a successful surgical correction of a critical aortic stenosis using a hybrid method applied in a newborn during the first day of life. The infant was diagnosed with a hypoplastic left heart complex with an intact atrial septum (aortic and mitral valves stenosis variant), that led to the cardiogenic shock and acute pulmonary edema. The procedure included bilateral banding of the pulmonary artery branches and atrioseptostomy with stenting of the… More > Graphic Abstract

Basant Tomar^*, Narendra Kumar, Mini Sreejeth

Computer Systems Science and Engineering, Vol.45, No.2, pp. 1495-1516, 2023, DOI:10.32604/csse.2023.030635

Abstract Industrial Control Systems (ICS) and SCADA (Supervisory Control and Data Acquisition) systems play a critical role in the management and regulation of critical infrastructure. SCADA systems brings us closer to the real-time application world. All process and equipment control capability is typically provided by a Distributed Control System (DCS) in industries such as power stations, agricultural systems, chemical and water treatment plants. Instead of control through DCS, this paper proposes a SCADA and PLC (Programmable Logic Controller) system to control the ratio control division and the assembly line division inside the chemical plant. A specific design and implementation method for… More >

Igor Mokryk^1,2,*, Vitaly Demyanchuk^1,2, Volodymyr Vashkeba², Ilya Nechay¹, Borys Todurov^1,2

Congenital Heart Disease, Vol.17, No.6, pp. 641-646, 2022, DOI:10.32604/chd.2022.025096

Abstract Congenital heart disease (CHD) is one of the risk factors for developing infective endocarditis (IE). Right-sided IE occurs in 5%–10% of endocarditis cases, and pulmonary valve (PV) is involved in less than 2% of such patients. Literature data are few, and optimal treatment methods, indications for surgery, and types of operative techniques are still under debate. We present an adult patient with a rare combination of the ventricular septal defect (VSD) and PV IE who underwent surgical treatment. Neocuspidization with autologous pericardium was utilized for the reconstruction of his PV. We discuss details of this novel surgical technique. More > Graphic Abstract

Xiaohua Chen^1,*, Caifu Lan¹, Honghao Zheng², Wang Li¹, Chao Zhao¹, Wenjun Dang³

Energy Engineering, Vol.119, No.4, pp. 1439-1452, 2022, DOI:10.32604/ee.2022.018208

Abstract For oil pipeline in mountain areas, high hydrostatic pressure in the pipeline may cause error-opening of pressure relief valves, and oil is discharged from the pipeline to the pressure relief tanks, bringing spilling-over risk of the pressure relief tanks. Therefore, simulating the error-opening situations of the pressure relief valves and investigating the oil discharge process are necessary for checking the possibility of the spilling-over accident and then proposing measures to improve the pressure relief system. This research focuses on a continuous undulating oil pipeline with large elevation difference and a station along this pipeline, which is named B station in… More >

Woo Young Park¹, Gi Beom Kim^1,*, Sang Yun Lee¹, Mi Kyoung Song¹, Hye Won Kwon¹, Hyo Soon An¹, Eun Jung Bae¹, Sungkyu Cho², Jae Gun Kwak², Woong-Han Kim²

Congenital Heart Disease, Vol.17, No.3, pp. 335-350, 2022, DOI:10.32604/chd.2022.018666

Abstract Objectives: To establish long-term outcome of surgical pulmonary valve replacement (PVR) in congenital heart disease (CHD) and to identify risk factors for overall mortality, operative mortality, and repetitive PVR. Methods: This is a retrospective study of 375 surgical PVR in 293 patients who underwent surgical PVR for CHD between January 2000 and May 2020. We only included patients with index PVR with previous open-heart surgery regardless of the number of PVRs. The previous surgical history of patients who underwent PVR during the study period was also included. Patients who underwent the Rastelli operation, and those who underwent single PVR without… More >

Aniket N. Sharma¹, Shilpa R. Dongre¹, Rajesh Gupta¹, Prerna Pandey¹, Neeraj Dhanraj Bokde^2,*

CMES-Computer Modeling in Engineering & Sciences, Vol.131, No.3, pp. 1515-1537, 2022, DOI:10.32604/cmes.2022.018867

Abstract Water distribution network (WDN) leakage management has received increased attention in recent years. One of the most successful leakage-control strategies is to divide the network into District Metered Areas (DMAs). As a multi-staged technique, the generation of DMAs is a difficult task in design and implementation (i.e., clustering, sectorization, and performance evaluation). Previous studies on DMAs implementation did not consider the potential use of existing valves in achieving the objective. In this work, a methodology is proposed for detecting clusters and reducing the cost of additional valves and DMA sectorization by considering existing valves as much as possible. The procedure… More >

Jinliang Zhu¹, Xiulei Wang¹, Guihua Wang¹, Xianglin Zhong², Zhenguo Li³, Zhiming Wang¹, Ke Sun^1,*, Shuzhan Bai^1,*

FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.3, pp. 701-711, 2022, DOI: 10.32604/fdmp.2022.019311

Abstract Exhaust thermal management is essential to allow engines to meet the Euro VI emissions standards and reducing nitrogen oxide emissions is one of the most important targets being pursued nowadays. Along these lines, in the present study, engine’s thermal performances have been evaluated on the basis of a WHTC test, namely a transient engine dynamometer schedule defined by the global technical regulation (GTR) developed by the UN ECE GRPE group (the GTR is covering a world-wide harmonized heavy-duty certification (WHDC) procedure for engine exhaust emissions). The influence of thermal management on fuel consumption, intake, and tailpipe NO_x have been quantitatively… More >