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467 results on '"double-short"'

2. Feasibility of Using a Novel 2.45 GHz Double Short Distance Slot Coaxial Antenna for Minimally Invasive Cancer Breast Microwave Ablation Therapy: Computational Model, Phantom, and In Vivo Swine Experimentation

Author

C. J. Trujillo-Romero, José L. Reyes, M. A. Vega-López, Lorenzo Leija, M. C. Ramírez-Estudillo, Arturo Vera, R. Ortega-Palacios, F. Morales-Alvarez, and M. F. J. Cepeda Rubio

Subjects
lcsh:Medical technology, Materials science, Article Subject, Swine, medicine.medical_treatment, Finite Element Analysis, Biomedical Engineering, Health Informatics, Slot antenna, Breast Neoplasms, Imaging phantom, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Breast cancer, medicine, Animals, Humans, Minimally Invasive Surgical Procedures, Computer Simulation, Microwaves, lcsh:R5-920, Coaxial antenna, business.industry, Phantoms, Imaging, Ultrasound, Microwave ablation, Temperature, Mammary Neoplasms, Experimental, Equipment Design, Ablation, medicine.disease, lcsh:R855-855.5, 030220 oncology & carcinogenesis, Catheter Ablation, Feasibility Studies, Surgery, Female, Coaxial, lcsh:Medicine (General), business, Biotechnology, Biomedical engineering, Research Article
Abstract

Microwave ablation (MWA) by using coaxial antennas is a promising alternative for breast cancer treatment. A double short distance slot coaxial antenna as a newly optimized applicator for minimally invasive treatment of breast cancer is proposed. To validate and to analyze the feasibility of using this method in clinical treatment, a computational model, phantom, and breast swine in vivo experimentation were carried out, by using four microwave powers (50 W, 30 W, 20 W, and 10 W). The finite element method (FEM) was used to develop the computational model. Phantom experimentation was carried out in breast phantom. The in vivo experimentation was carried out in a 90 kg swine sow. Tissue damage was estimated by comparing control and treated micrographs of the porcine mammary gland samples. The coaxial slot antenna was inserted in swine breast glands by using image-guided ultrasound. In all cases, modeling, in vivo and phantom experimentation, and ablation temperatures (above 60°C) were reached. The in vivo experiments suggest that this new MWA applicator could be successfully used to eliminate precise and small areas of tissue (around 20–30 mm2). By modulating the power and time applied, it may be possible to increase/decrease the ablation area.

Published
2018

3. Partial substitution of the ureter using a double short segments of the ileum following the monti procedure

Author

Khalid Elkhader, Ahmed Ibn Attya Andaloussi, Abdelkader Belkouchi, Mounir Lahyani, Nabil Jakhlal, Mohamed Elouazni, Abdellatif Koutani, Ismail Bezza, Fouad Bakloul, Tarik Karmouni, and Lhssan Ifrine

Subjects
Male, medicine.medical_specialty, Transplantation, Heterotopic, medicine.medical_treatment, Urinary system, Case Report, Ileum, Hydronephrosis, Partial substitution, urologic and male genital diseases, monti procedure, Transplantation, Autologous, Postoperative Complications, Ureter, Laparotomy, substitution, Humans, Medicine, Monti procedure, lcsh:R5-920, Sclerosis, treatment, business.industry, lcsh:Public aspects of medicine, stenosis, lcsh:RA1-1270, General Medicine, Anatomy, Middle Aged, medicine.disease, Surgery, Fibromatosis, Aggressive, medicine.anatomical_structure, Mitrofanoff principle, Stents, lcsh:Medicine (General), business
Abstract

The partial substitution of the ureter using a pediculated double short segments of the ileum is a technique used to re-establish ureteral transit and preserve the renal unit, following the resection of extensive ureteral lesions. Standard surgical procedure for an ileoureteroplasty consists of isolating an ileal duct of equal or greater length than the ureteral defect and interposing it in the urinary tract in an isoperistaltic direction. Monti described a surgical technique that allows for the creation of catheterizable stomas in continent urinary diversions, using the Mitrofanoff principle. These passageways were created from one or several 2.5 cm long ileal sections by means of their detubulization and transverse retubulization.

Published
2015
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4. NYSE To Double Short Interest Reporting

Subjects
Financial disclosure -- Laws, regulations and rules, Regulatory compliance -- Laws, regulations and rules, Securities dealers -- Laws, regulations and rules, Government regulation, Banking, finance and accounting industries, Business
Abstract

NYSE Regulation is planning to double the number of short interest reports broker/dealers must complete come September. NYSE Regulation is planning to double the number of short interest reports broker/dealers [...]

Published
2007

20. A Double Short Pulse High-Voltage Power-Supply Based On DSP

Author

Wu Yan, Liang Ping, Xu Dapeng, and Li Guofeng

Subjects
Engineering, Power supply rejection ratio, Switched-mode power supply, business.industry, Pulse-amplitude modulation, Rise time, Electrical engineering, High voltage, Energy consumption, Dielectric barrier discharge, business, Voltage
Abstract

Publisher Summary With the pollution becoming gradually severe, the quality of water deteriorates badly. So, traditional ways of wastewater treatment are being challenged. Recently many researchers paid attention to a way of wastewater treatment by high-voltage discharge in water. Single-pole short pulse and AC high-voltage power supply are most commonly used for generating this kind of discharge. But there are no reported research results of double short pulse high-voltage power supply. The chapter explains a design of a double short pulse high-voltage power supply system, which can output high-peak voltage, short voltage rise time, and high frequency. Mostly importantly, it can be applied on dielectric barrier discharge (DBD) wastewater treatment reactor to decrease energy consumption. The power supply system is composed of a positive and a negative DC high-voltage power supply and a rotating spark-gap switch (RSGS). The RSGS is used to control charge and discharge of pulse forming capacitances. The DC high-voltage power supply employs full-bridge inversion techniques and LCC resonant techniques to realize miniaturization. DSP is the controlling core of the whole power supply system, which regulates pulse amplitude and pulse frequency of power supply, based on the feedback information of interior parameter of the load. This power supply system is applied to discharge in water for dye wastewater treatment.

Published
2004
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