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This paper presents a photovoltaic (PV) based battery charger utilizing a wireless power transfer (WPT) interface system. The double-sided inductor– capacitor–capacitor (LCC) compensation network is utilized for the inductive power transfer (IPT) system. Because of nonlinear characteristics of the PV, the maximum power point tracking (MPPT) is achieved by controlling the phase displacement angle or the pulse width of the quasi-square pulse inverter connected to the transmitting coil of the IPT system. As a result, the power transferred to the secondary-side, which is connected to a battery bank, is regulated. The IPT-based PV interface system is designed to achieve zero voltage switching (ZVS) in the primary side at rated conditions to minimize the switching loss. Extensive simulation studies are carried out using EMTDC/PSCAD software to investigate the dynamic performance of the proposed IPT-based PV interface system.

Due to overpopulation, and giant projects and cities, the demand for electricity extremely rises in order to keep up with needs. The smart grid is the modernized form of conventional grid which involves not only electric power flow, but also information as well. smart grids are seen as a best possible solution to increase the demand for distributed power generation, enhance power quality, and optimize operation and consumption.This paper focuses on the important role of smart grid as a modern configuration of electrical power grid, and the vital part of communication technologies in smart grid. Consequently, this paper will present, and compere between these technologies. The conclusion will be based on the comparison between all mentioned methods that will be appeared in this paper.

The renewable energy is growing in significant way especially photovoltaic (PV) system in order to keep up with huge needs of electricity. However, the PV output power is suffering from both; intermittency and environmental condition which have great influence on its performance. So, using batteries as complementary source becomes imperative with PV system. Therefore, the batteries must be sizing precisely. In this paper, the different aspects which affect the battery sizing will be explained. These factors will figure out the system behavior and performance. The main aim of this paper is to acquire high system efficiency and reliability with optimal cost.

This study was conducted using irinotecan and cisplatin (IP) concurrently with thoracic radiation therapy to evaluate the response and toxicity of this protocol in the treatment of patients with limited-disease small cell lung cancer (LD-SCLC).Twenty-seven chemotherapy-naive patients with LD-SCLC received two cycles of weekly irinotecan 60 mg/m(2) and cisplatin 60 mg/m(2) before the initiation of the thoracic radiation therapy.Of the 29 patients with LD-SCLC enrolled in the study, 27 were eligible for evaluation of response and toxicity. The median age was 62 years; 26 patients (90%) were men. Eastern Cooperative Oncology Group (ECOG) performance status was 0 in 5 patients (17%) and 1 in 18 patients (62%). Ten patients (37%) achieved a complete response (CR), 14 patients (52%) achieved a partial response (PR), while 3 patients (11%) had progressive disease (PD); one of the 3 nonresponders achieved a PR after commencing concurrent chemoradiotherapy; therefore, the overall response rate was 93%. The median survival time was 20.2 months and 1- and 2-year survival rates were 69% and 53.2%, respectively. The median progression-free survival (PFS) was 11.8 months, and 1- and 2-year PFS times were 52% and 34.1%, respectively. Neutropenia was the most prevalent hematological toxicity and it was evident as grade 3 in 14 patients (52%). Asthenia was the most prevalent nonhematological toxicity, in 18 patients (67%); esophagitis occurred in 15 patients (56%). No treatment-related deaths (due to sepsis or bleeding) were reported in the study.Irinotecan and cisplatin is considered to be an effective and safe chemotherapeutic regimen when used concurrently with thoracic radiation therapy for the treatment of patients with LD-SCLC.

Background Left atrial volume indexed to body surface area (LAVI) measured at rest is an independent predictor of adverse cardiovascular outcome at long-term follow-up. We explored the value of LAVI measured at peak dobutamine stress echocardiography (DSE) to identify patients with significant coronary artery disease (CAD) and to discriminate those with multivessel CAD. Methods We enrolled 100 patients of 134 consecutively screened patients without resting wall-motion abnormalities (WMA) referred for DSE. LA volume was measured using the biplane area–length method at rest and at peak DSE. Significant coronary stenosis was defined as ≥50% obstruction of ≥1 sizable artery by coronary angiography. Results The mean age was 57.2 ± 10.6 years (55% males). Fifty-six patients (56%) had significant CAD by coronary angiography: 28 (28%) had single-vessel CAD, and 28 (28%) had multivessel CAD. ROC curve analysis showed that the optimal cutoff value of stress-induced LAVI that best discriminates significant CAD was 30.1 mL/m2. Using this cutoff value, significant CAD was identified with a sensitivity of 85.7%, specificity 95.5%, PPV 96%, and NPV 84%. The optimal cutoff value of stress-induced LAVI that best discriminates multivessel CAD was 32.7 mL/m2. Using this cutoff value, multivessel CAD was identified with a sensitivity of 88.7%, specificity 96.5%, PPV 97%, and NPV 89%. Conclusions In symptomatic patients who underwent DSE for suspected CAD and had no resting WMA, LAVI measured at peak DSE predicted angiographically significant CAD with acceptable sensitivity and high specificity and predicted multivessel CAD with high sensitivity and specificity.