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Red Wine Prevents Brain Oxidative Stress and Nephropathy in Streptozotocin-induced Diabetic Rats
Montilla, Pedro,Barcos, Montserrat,Munoz, Maria C.,Bujalance, Inmaculada,Munoz-Castaneda, Juan R.,Tunez, Isaac Korean Society for Biochemistry and Molecular Biol 2005 Journal of biochemistry and molecular biology Vol.38 No.5
We have studied the effects of red wine on brain oxidative stress and nephropathy in streptozotocin (STZ)-induced diabetic rats. Diabetes was induced in Wistar rats with a single intraperitonally injection of STZ (50 mg/kg). Two weeks before and four weeks after injection, red wine was given orally in both normal and diabetic rats. Blood samples were taken from the neck vascular trunk in order to determine the glucose, triglycerides, total cholesterol, HDL-cholesterol (HDL-c), atherogenic index (AI), total protein, blood urea nitrogen (BUN), creatinine, insulin, lipid peroxidation products, reduced glutathione (GSH) and superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities. As well, we estimated the lipid peroxidtion, GSH and SOD, GSH-Px and catalase activities in brain and renal homogenates, and the excretion of albumin, proteins and glucose in urine over 24 h period. The administration of STZ caused significant increases in levels of glycosuria, proteinuria, albuminuria, glycemia, total cholesterol and AI, as well as in lipid peroxidation products in the brain, plasma and kidney, whereas it decreased the GSH content and SOD, GSH-Px and catalase activities. Treatment with red wine significantly prevented the changes induced by STZ. These data suggested that red wine has a protective effect against brain oxidative stress, diabetic nephropathy and diabetes induced by STZ, as well as it protects against hypercholesterolemia and atherogenic risk.
Non-resonant Element in Slotted Ground Plane for Multiband Antenna Operation
Cristina Picher,Jaume Anguera,Aurora Andújar,Adrián Bujalance 한국전자통신연구원 2014 ETRI Journal Vol.36 No.5
New ways of achieving small, multiband,multifunctional, and standard solutions for mobilehandset antennas are demanded in the current wirelessmarket. A non-resonant element of 5 mm × 5 mm × 5 mm,a matching network, and a 100 mm × 40 mm slottedground plane are proposed to satisfy mobile marketdemands that require multiband operation and smallantenna solutions. The main advantage of the proposeddesign is that with only one non-resonant element ofconsiderably small size (0.015, 900 MHz), the handset iscapable of providing operation at mobile bands.
Non-resonant Element in Slotted Ground Plane for Multiband Antenna Operation
Picher, Cristina,Anguera, Jaume,Andujar, Aurora,Bujalance, Adrian Electronics and Telecommunications Research Instit 2014 ETRI Journal Vol.36 No.5
New ways of achieving small, multiband, multifunctional, and standard solutions for mobile handset antennas are demanded in the current wireless market. A non-resonant element of $5mm{\times}5mm{\times}5mm$, a matching network, and a $100mm{\times}40mm$ slotted ground plane are proposed to satisfy mobile market demands that require multiband operation and small antenna solutions. The main advantage of the proposed design is that with only one non-resonant element of considerably small size ($0.015{\lambda}$, 900 MHz), the handset is capable of providing operation at mobile bands.
Bujal Noor Ropidah,Sulaiman Marizan,Abd Kadir Aida Fazliana,Khatib Tamer,Eltawil Naji 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.6
Optimal placement and sizing of Distributed Generation (DG) are essential for future power planning of distribution networks. The performance of Gravitational Search Algorithm (GSA) and an Improved version of Gravitational Search Algorithm (IGSA) are compared in solving the optimization problem. The multi-objective function optimization includes power loss minimization (P loss ), Minimum bus voltage (Vbus min ), and an average voltage total harmonic distortion (THDv) are considered in this optimization problem and the IEEE 13-bus and IEEE 69-bus radial distribution network were applied on this study. The benefi ts due to the optimal placement and sizing of DG include power loss reduction, minimization of total harmonic distortion, and improvement of bus voltages, especially the weakest bus in the distribution network. The impact of DG installation at the proposed location with the proposed sizing on voltage stability margin also presented. The results show the Voltage Stability Margin (VSM) for both real power (P) and reactive power (Q) at the weakest bus after DG have improvement with present of DG.