The Experts below are selected from a list of 6 Experts worldwide ranked by ideXlab platform
Maryam Massaeli - One of the best experts on this subject based on the ideXlab platform.
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impact of distributed generation on distribution system s reliability considering recloser fuse miscoordination a practical case study
Indian journal of science and technology, 2011Co-Authors: Seyed Ali Mohammad Javadian, Maryam MassaeliAbstract:Using Distributed Generation (DG) is an interesting topic that has drawn attention of electrical engineers in recent years. The presence of these generation units in distribution systems, although has many advantages and benefits, has to be applied after performing detailed studies and investigations due to their complexities in operation, control and protection of network. DGs are connected to distribution networks with the aim of reliability improving. On the other hand, installation of DG may destroy the protection coordination which causes the system reliability to become worse. This conflict has been investigated on a practical distribution system in Iran and the results have been presented. Because of the large number of temporary faults in the studied feeder and their Long Repair Time, which is because of special recloser-fuse coordination scheme of the feeder, reliability analysis is done considering both permanent and temporary faults.
Seyed Ali Mohammad Javadian - One of the best experts on this subject based on the ideXlab platform.
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impact of distributed generation on distribution system s reliability considering recloser fuse miscoordination a practical case study
Indian journal of science and technology, 2011Co-Authors: Seyed Ali Mohammad Javadian, Maryam MassaeliAbstract:Using Distributed Generation (DG) is an interesting topic that has drawn attention of electrical engineers in recent years. The presence of these generation units in distribution systems, although has many advantages and benefits, has to be applied after performing detailed studies and investigations due to their complexities in operation, control and protection of network. DGs are connected to distribution networks with the aim of reliability improving. On the other hand, installation of DG may destroy the protection coordination which causes the system reliability to become worse. This conflict has been investigated on a practical distribution system in Iran and the results have been presented. Because of the large number of temporary faults in the studied feeder and their Long Repair Time, which is because of special recloser-fuse coordination scheme of the feeder, reliability analysis is done considering both permanent and temporary faults.
Hyung Keun Park - One of the best experts on this subject based on the ideXlab platform.
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in vitro in vivo and clinical tests of a novel flexible ureteroscope for the diagnosis and treatment of kidney and ureteral diseases
Investigative and Clinical Urology, 2018Co-Authors: Dai Hee Kim, Jung Hyun Shin, Se Young Choi, Dalsan You, Choungsoo Kim, Hyung Keun ParkAbstract:Purpose Despite advances in flexible ureteroscopy, the high cost and Long Repair Time of ureteroscopes limit their use in the urology. We compared the performance of a novel flexible ureteroscope (fURS) 'HF-EH' with that of the two contemporary fURSs 'URF-P6' and 'COBRA'. Materials and methods We compared in vitro measurements of deflection angle, irrigation flow rate, and image quality between HF-EH and URF-P6 while also inspecting renal collecting systems in five female pigs. For clinical testing, we performed retrograde intrarenal surgeries using HF-EH in four patients. Experienced urologists compared performance parameters (irrigation, convenience, and maneuverability) between the HF-EH and COBRA. Results The flow rate of HF-EH (21.0 mL/min) was worse, and its resolution (1.59 line pairs/mm) was inferior to that of URF-P6 (28.7 mL/min and 3.17 line pairs/mm, respectively). However, HF-EH was superior to URF-P6 in terms of loss of deflection angle with the insertion of accessories (1.8% vs. 12.7%). In vivo and clinical testing revealed that the performance parameters of HF-EH were slightly inferior to those of conventional domestic fURSs. We successfully performed retrograde intrarenal surgeries using HF-EH in four patients and achieved stone-free statuses in two. None of the patients exhibited any procedure-related complications. Conclusions Although we observed that two of the three performance parameters of the novel ureteroscope 'HF-EH' were inferior to those of the conventional ureteroscope, we successfully used HF-EH to perform retrograde intrarenal surgeries in patients. Further studies on performance and durability are warranted for making HF-EH commercially available.
Dai Hee Kim - One of the best experts on this subject based on the ideXlab platform.
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in vitro in vivo and clinical tests of a novel flexible ureteroscope for the diagnosis and treatment of kidney and ureteral diseases
Investigative and Clinical Urology, 2018Co-Authors: Dai Hee Kim, Jung Hyun Shin, Se Young Choi, Dalsan You, Choungsoo Kim, Hyung Keun ParkAbstract:Purpose Despite advances in flexible ureteroscopy, the high cost and Long Repair Time of ureteroscopes limit their use in the urology. We compared the performance of a novel flexible ureteroscope (fURS) 'HF-EH' with that of the two contemporary fURSs 'URF-P6' and 'COBRA'. Materials and methods We compared in vitro measurements of deflection angle, irrigation flow rate, and image quality between HF-EH and URF-P6 while also inspecting renal collecting systems in five female pigs. For clinical testing, we performed retrograde intrarenal surgeries using HF-EH in four patients. Experienced urologists compared performance parameters (irrigation, convenience, and maneuverability) between the HF-EH and COBRA. Results The flow rate of HF-EH (21.0 mL/min) was worse, and its resolution (1.59 line pairs/mm) was inferior to that of URF-P6 (28.7 mL/min and 3.17 line pairs/mm, respectively). However, HF-EH was superior to URF-P6 in terms of loss of deflection angle with the insertion of accessories (1.8% vs. 12.7%). In vivo and clinical testing revealed that the performance parameters of HF-EH were slightly inferior to those of conventional domestic fURSs. We successfully performed retrograde intrarenal surgeries using HF-EH in four patients and achieved stone-free statuses in two. None of the patients exhibited any procedure-related complications. Conclusions Although we observed that two of the three performance parameters of the novel ureteroscope 'HF-EH' were inferior to those of the conventional ureteroscope, we successfully used HF-EH to perform retrograde intrarenal surgeries in patients. Further studies on performance and durability are warranted for making HF-EH commercially available.
Jung Hyun Shin - One of the best experts on this subject based on the ideXlab platform.
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in vitro in vivo and clinical tests of a novel flexible ureteroscope for the diagnosis and treatment of kidney and ureteral diseases
Investigative and Clinical Urology, 2018Co-Authors: Dai Hee Kim, Jung Hyun Shin, Se Young Choi, Dalsan You, Choungsoo Kim, Hyung Keun ParkAbstract:Purpose Despite advances in flexible ureteroscopy, the high cost and Long Repair Time of ureteroscopes limit their use in the urology. We compared the performance of a novel flexible ureteroscope (fURS) 'HF-EH' with that of the two contemporary fURSs 'URF-P6' and 'COBRA'. Materials and methods We compared in vitro measurements of deflection angle, irrigation flow rate, and image quality between HF-EH and URF-P6 while also inspecting renal collecting systems in five female pigs. For clinical testing, we performed retrograde intrarenal surgeries using HF-EH in four patients. Experienced urologists compared performance parameters (irrigation, convenience, and maneuverability) between the HF-EH and COBRA. Results The flow rate of HF-EH (21.0 mL/min) was worse, and its resolution (1.59 line pairs/mm) was inferior to that of URF-P6 (28.7 mL/min and 3.17 line pairs/mm, respectively). However, HF-EH was superior to URF-P6 in terms of loss of deflection angle with the insertion of accessories (1.8% vs. 12.7%). In vivo and clinical testing revealed that the performance parameters of HF-EH were slightly inferior to those of conventional domestic fURSs. We successfully performed retrograde intrarenal surgeries using HF-EH in four patients and achieved stone-free statuses in two. None of the patients exhibited any procedure-related complications. Conclusions Although we observed that two of the three performance parameters of the novel ureteroscope 'HF-EH' were inferior to those of the conventional ureteroscope, we successfully used HF-EH to perform retrograde intrarenal surgeries in patients. Further studies on performance and durability are warranted for making HF-EH commercially available.
