Bo Yin^1,#, Xingyu Long^2,#, Zhi Wang¹, Feng Ning¹, Kan Wang², Jun He^1,*

Canadian Journal of Urology, Vol.33, No.1, pp. 201-210, 2026, DOI:10.32604/cju.2025.067189 - 28 February 2026

Abstract Background: Clear cell sarcoma of the kidney (CCSK) is a rare and highly aggressive pediatric renal malignancy with a marked propensity for metastatic spread. Cases of CCSK associated with inferior vena cava (IVC) tumor thrombus (IVCTT) are exceptionally uncommon in the literature. We report a case of CCSK with IVCTT in a 15-month-old male infant. Case Description: We reported a case admitted in May 2020 for a 3-day history of fever and hematuria. Abdominal CT revealed an unevenly enhanced mass and low-density shadows within the IVC. The diagnosis of CCSK was confirmed via needle biopsy. The… More >

Shlomi Barak¹, Netanel Waldenberg¹, Aharon Peretz², Reut Bartoov¹, Guy Bar¹, Snir Dekalo^3,*

Canadian Journal of Urology, Vol.33, No.1, pp. 135-142, 2026, DOI:10.32604/cju.2025.066936 - 28 February 2026

Abstract Background: Hormonal treatment and response as a predictor of sperm retrieval prior to microdissection testicular sperm extraction (micro-TESE) are not well established in the current literature. This study aimed to investigate the hormonal response as a predictor of sperm retrieval among men with nonobstructive azoospermia (NOA). Methods: Seventy-seven consecutive patients who had testosterone levels ≤ 14 nmol/L were treated medically with an aromatase inhibitor or recombinant human chorionic gonadotropin (rec-hCG) prior to micro-TESE and were included. Thirty-four (44.2%) had unexplained NOA (UNEX), 25 (32.5%) had Klinefelter syndrome (KS), 8 (10.4%) had a history of cryptorchidism… More >

Mustufa Babar^1,*, Farooz Babar², Noah Hawks-Ladds³, Justin Loloi⁴, Michael Ciatto⁵

Canadian Journal of Urology, Vol.33, No.1, pp. 193-199, 2026, DOI:10.32604/cju.2025.066654 - 28 February 2026

Abstract Background: Prostate cancer is a common malignancy, with many men on active surveillance for localized, low-risk disease also experiencing lower urinary tract symptoms (LUTS) from benign prostatic hyperplasia (BPH). Water Vapor Thermal Therapy (WVTT) is a minimally invasive BPH treatment, but its safety and efficacy in this setting are unclear. Case Description: We report three men with localized PCa on active surveillance who underwent WVTT for LUTS. Conclusions: WVTT appears safe and potentially effective in treating LUTS, especially in those with lower-risk disease and smaller prostate volumes. Further research is needed to confirm safety, efficacy, and More >

Skander Zouari^1,*, Flora Barthe¹, Arnoult Morrone¹, Lionel Mendel², Imad Bentellis², Louis Vignot¹, Romain Haider¹, Younes Ahallal¹, Daniel Chevallier¹, Matthieu Durand^1,3

Canadian Journal of Urology, Vol.33, No.1, pp. 173-184, 2026, DOI:10.32604/cju.2025.064281 - 28 February 2026

Abstract Background: Inflatable Penile Prosthesis (IPP) is the treatment for erectile dysfunction (ED) refractory to pharmacological therapies. Long-term data on factors associated with prosthesis survival remain unclear. This study aimed to analyze the long-term survival of penile prostheses and identify risk factors associated with survival without reintervention. Methods: This is a retrospective, single-center study of patients who underwent IPP implantation between January 2014 and December 2022. Preoperative data related to the patient and the etiology of ED, as well as perioperative data, were collected. The primary outcome was survival without reintervention, defined as prosthesis revision or… More >

Melita Srpak¹, Darko Pavlovic², Predrag Brlek^3,*, Nikola Kozul³

Energy Engineering, Vol.123, No.3, 2026, DOI:10.32604/ee.2026.075211 - 27 February 2026

Abstract Discussions about the future of energy sources and environmental sustainability are becoming critical on a global scale. The energy sector plays a central role in the economy, as the availability and cost of energy influence the competitiveness of economies, while the level of energy consumption impacts the standard of living for individuals. This paper aims to examine environmental challenges and steps for a sustainable transition towards a hydrogen economy, focusing on its potential as an alternative to fossil fuels and the importance of developing the hydrogen paradigm. The research methodology is based on a combination… More >

Ebtehal Chasseb Jbary^*, Alaa R. Al-Badri

Energy Engineering, Vol.123, No.3, 2026, DOI:10.32604/ee.2025.074415 - 27 February 2026

Abstract Despite significant advancements in solar collector technology, persistent challenges remain in improving the overall efficiency of solar systems. This paper investigates the use of mini-channel aluminum tubes mounted on the reflective surface as preliminary heating stages to enhance the overall system thermal performance. Experimental assessments were conducted with flow rates ranging from 0.1 to 0.8 LPM and tilt angles of 180° South and 225° Southwest in Al-Kut, Iraq, from 9:00 AM to 2:00 PM. Fluid flows sequentially through five flat aluminum tubes totaling 50 channels, named stage-1, then flows through four aluminum tubes totaling 40… More >

Shaymaa Husham Abdulmalek¹, Ali Ahmed Gitan^2,*, Israa Sami Farhan², Oras Fadhil Khalaf¹, Sayf Waleed Albayati¹

Energy Engineering, Vol.123, No.3, 2026, DOI:10.32604/ee.2026.074018 - 27 February 2026

Abstract The utilisation of waste in green sustainable technology can provide a clean environment and support energy demand. This work aims to design and analyse the performance of a developed indirect flat-plate Solar Air Heater (SAH) integrated with an internal thermal storage unit using Waste Automotive Oil (WAO). The SAH was designed based on the circulation of confined air around the internal thermal storage unit due to the updraft effects of hot air. Two SAHs were tested to compare the performance of WAO and water, with the results being compared to previous work that utilised phase… More >

Naveen Guguloth¹, Bishwajit Dey², Fausto Pedro García Márquez^3,*, Prasenjit Dey¹, Isaac Segovia Ramírez⁴

Energy Engineering, Vol.123, No.3, 2026, DOI:10.32604/ee.2025.073971 - 27 February 2026

Abstract The increasing integration of electric vehicle (EV) loads into power systems necessitates understanding their impact on stability. Small-magnitude perturbations, if persistent, can cause low-frequency oscillations, leading to synchronism loss and mechanical stress. This work analyzes the effect of voltage-dependent EV loads on this small-signal stability. The study models an EV load within a Single-Machine Infinite Bus (SMIB) system. It specifically evaluates the influence of EV charging through the DC link capacitor of a Unified Power Flow Controller (UPFC), a key device for damping oscillations. The system’s performance is compared to a modified version equipped with More >

Samar Taha Yousif^1,2, Firas Basim Ismail^1,3,*, Ammar Al-Bazi⁴, Alaa Abdulhady Jaber⁵, Sivadass Thiruchelvam¹

Energy Engineering, Vol.123, No.3, 2026, DOI:10.32604/ee.2025.073955 - 27 February 2026

Abstract Thermal power plants are the main contributors to greenhouse gas emissions. The prediction of the emission supports the decision makers and environmental sustainability. The objective of this study is to enhance the accuracy of emission prediction models, supporting more effective real-time monitoring and enabling informed operational decisions that align with environmental compliance efforts. This paper presents a data-driven approach for the accurate prediction of gas emissions, specifically nitrogen oxides (NOx) and carbon monoxide (CO), in natural gas power plants using an optimized hybrid machine learning framework. The proposed model integrates a Feedforward Neural Network (FFNN)… More > Graphic Abstract

Abdin Abdin¹, Nicola Bianchi^1,*, Andrea Voltan², Walter Faedo², Piero Cazzavillan², Alessandro Biason²

Energy Engineering, Vol.123, No.3, 2026, DOI:10.32604/ee.2025.073434 - 27 February 2026

Abstract Synchronous reluctance motors (SynRM) are widely employed in industrial applications due to their high robustness, low cost, and absence of permanent magnets. In recent years, significant research efforts have focused on improving the controllability and efficiency of SynRM. Accurate rotor position information is essential for the controller to generate appropriate current and voltage references corresponding to the desired speed and load torque. Shaft-mounted position sensors are generally undesirable because of their high cost, sensitivity to harsh operating conditions, maintenance requirements, and reduced reliability in environments characterized by high vibration. Consequently, sensorless control techniques that estimate… More >