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Trivedi, Tapankumar,Jadeja, Rajendrasinh,Bhatt, Praghnesh The Korean Institute of Electrical Engineers 2017 Journal of Electrical Engineering & Technology Vol.12 No.3
Direct Power Control technique has become popular in the grid connected Voltage Source Converter (VSC) applications due to its simplicity, direct voltage vector selection and improved dynamic performance. In this paper, a direct method to determine the effect of voltage vector on the instantaneous active and reactive power variations is developed. An alternative Look Up Table is proposed which minimizes the commutations in the converter and results in minimum reactive power variation. The application of suggested table is established for Shunt Active Power Filter (SAPF) application. The Predictive Direct Power Control method, which minimizes apparent power variation, is further investigated to reduce commutations in converters. Both the methods are validated using 2 kVA laboratory prototype of Shunt Active Power Filters (SAPF).
Tapankumar Trivedi,Rajendrasinh Jadeja,Praghnesh Bhatt 대한전기학회 2017 Journal of Electrical Engineering & Technology Vol.12 No.3
Direct Power Control technique has become popular in the grid connected Voltage Source Converter (VSC) applications due to its simplicity, direct voltage vector selection and improved dynamic performance. In this paper, a direct method to determine the effect of voltage vector on the instantaneous active and reactive power variations is developed. An alternative Look Up Table is proposed which minimizes the commutations in the converter and results in minimum reactive power variation. The application of suggested table is established for Shunt Active Power Filter (SAPF) application. The Predictive Direct Power Control method, which minimizes apparent power variation, is further investigated to reduce commutations in converters. Both the methods are validated using 2 kVA laboratory prototype of Shunt Active Power Filters (SAPF).
Sankhari, Jayanta M.,Jadeja, Ravirajsinh N.,Thounaojam, Menaka C.,Devkar, Ranjitsinh V.,Ramachandran, A.V. 경희한의학연구센터 2012 Oriental Pharmacy and Experimental Medicine Vol.12 No.2
The present study was aimed at evaluating protective role of Eugenia jambolana seed extract (EJSE) on high cholesterol diet (HCD) induced hyperlipidemia/hypercholesterolemia amounting to cardiac and hepatic oxidative stress. Serum markers of cardiac and hepatic damage, total lipid profile (serum, tissue and feces), lipid peroxidation, antioxidant status and histopathological changes in cardiac and hepatic tissue have been assessed in control, HCD fed and HCD+EJSE treated (100 mg/kg BW, p.o.) rats. It was observed that co-supplementation of EJSE to HCD fed rats significantly (p<0.05) minimized elevation in the serum, and tissue lipid profiles, decrement in the HDL level and resulted in higher elimination of lipids through feces. Also, EJSE successfully ameliorated HCD induced cardiac and hepatic oxidative stress (p<0.05) and histopathological damage. It can be concluded that, EJSE has the potential of preventing HCD induced experimental hypercholesterolemia and, related cardiac and hepatic oxidative stress. Its therapeutic potential against HCD induced hypercholesterolemia and subsequent oxidative stress mediated cardiac and hepatic damage is indicated.
Polymeric nanoparticles as dual-imaging probes for cancer management
Menon, Jyothi U.,Jadeja, Parth,Tambe, Pranjali,Thakore, Dheeraj,Zhang, Shanrong,Takahashi, Masaya,Xie, Zhiwei,Yang, Jian,Nguyen, Kytai T. Techno-Press 2016 Biomaterials and Biomechanics in Bioengineering Vol.3 No.3
This article reports the development of biodegradable photoluminescent polymer (BPLP)-based nanoparticles (NPs) incorporating either magnetic nanoparticles (BPLP-MNPs) or gadopentate dimeglumine (BPLP-Gd NPs), for cancer diagnosis and treatment. The aim of the study is to compare these nanoparticles in terms of their surface properties, fluorescence intensities, MR imaging capabilities, and in vitro characteristics to choose the most promising dual-imaging nanoprobe. Results indicate that BPLP-MNPs and BPLP-Gd NPs had a size of $195{\pm}43nm$ and $161{\pm}55nm$, respectively and showed good stability in DI water and 10% serum for 5 days. BPLP-Gd NPs showed similar fluorescence as the original BPLP materials under UV light, whereas BPLP-MNPs showed comparatively less fluorescence. VSM and MRI confirmed that the NPs retained their magnetic properties following encapsulation within BPLP. Further, in vitro studies using HPV-7 immortalized prostate epithelial cells and human dermal fibroblasts (HDFs) showed > 70% cell viability up to $100{\mu}g/ml$ NP concentration. Dose-dependent uptake of both types of NPs by PC3 and LNCaP prostate cancer cells was also observed. Thus, our results indicate that BPLP-Gd NPs would be more appropriate for use as a dual-imaging probe as the contrast agent does not mask the fluorescence of the polymer. Future studies would involve in vivo imaging following administration of BPLP-Gd NPs for biomedical applications including cancer detection.
Birth of a healthy infant after bone marrow-derived cell therapy
Nayana H Patel,Yuvraj D Jadeja,Niket H Patel,Molina N Patel,Harsha K Bhadarka,Piyush N Chudasama,Harmi R Thakkar 대한생식의학회 2021 Clinical and Experimental Reproductive Medicine Vol.48 No.3
Bone marrow-derived cell (BMDC) therapy has numerous applications as potential biological cells for use in regenerative medicine. Here, we present an original case of endometrial atrophy associated with genital tuberculosis in a woman who achieved a live birth with BMDC. This 27-year-old woman came to our center with endometrial atrophy and primary infertility. She had a past history of genital tuberculosis and amenorrhea. Her husband’s semen quality was normal. The patient was counseled for hysteroscopy due to thin endometrium and advised in vitro fertilization (IVF) with donor eggs in lieu of poor ovarian reserve. Several attempts of IVF with hormone replacement therapy (HRT) were made, but the desired thickness of the endometrium was not achieved. Uterine artery injection of BMDC through interventional radiology was given, followed by HRT for three months, which resulted in improved endometrium. This was subsequently followed by IVF with donor egg. The treatment resulted in the conception and delivery of a 3.1-kg baby boy through lower segment caesarean section with no antenatal, intranatal or postnatal complications. Recently, there has been massive interest in stem cells as a novel treatment method for regenerative medicine, and more specifically for the regeneration of human endometrium disorders like Asherman syndrome and thin endometrium, which was the reason behind using this strategy for treatment.