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Gandhi, Chintan N,Balaraman, R Kyung Hee Oriental Medicine Research Center 2009 Oriental pharmacy and experimental medicine Vol.9 No.3
Curcumin (CMN) is known to have beneficial role in anorexia, coryza, cough, diabetic wounds, and hepatic disorders apart from its inherent antioxidant effects. Therefore, the present study was aimed to evaluate antioxidant effect of CMN in prevention of nephrolithiasis in rats-induced by ethylene glycol (EG) and Vitamin D3 (Vit. D3). Male Wistar rats (175 - 200 g) were randomized in groups like control, EG + Vit. D3 induced nephrolithiatiatic rats, CMN treated rats, CMN + EG + Vit. D3 treated rats, Vit. E + EG + Vit. D3 treated rats. Urine was collected weekly throughout the experimental protocol and estimated for calcium oxalate (CaO) count. After completion of experimental protocol serum was estimated for blood urea nitrogen and creatinine. Both the kidneys were excised and used to evaluate levels of biomarkers of oxidative stress and calcium oxalate crystal deposition by histopathological studies. Administration of EG and Vit. D3 to rats resulted in increased oxidative stress, hyperoxaluria and renal deposition of CaO crystals. Supplementation with CMN improves kidney function, reduces elevated oxidative stress, urinary oxalate level and renal deposition of CaO which shows its protective action in nephrolithiasis. The increased deposition of stone in the kidney and stone forming constituents of nephrolithiatic rats were effectively lowered by treatment of CMN.
Gandhi, V.C. Sathish,Kumaravelan, R.,Ramesh, S. Techno-Press 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.52 No.3
In an indentation approach, the smooth rigid spherical ball penetrated into a deformable flat is considered for the study based on contact mechanics approach. The elastic-plastic frictionless spherical indentation analysis has been under taken in the finite element analysis using "ABAQUS" and experimental study. The spherical indentation has been studied for the materials like steel, aluminium, copper and brass with an identical spherical indenter for diverse indentation depths. The springback analysis is executed for studying the actual indentation depth after the indenter is unloaded. In the springback simulation, the material recovers its elastic deformation after the indenter is unloaded. The residual diameter and depth of an indentation for various materials are measured and compared with simulation results. It shows a good agreement between the simulation and an experimental studies.
Gandhi, Sakthivel,Kumar, Prem,Thandavan, Kavitha,Jang, Kiwan,Shin, Dong-Soo,Vinu, Ajayan The Royal Society of Chemistry 2014 NEW JOURNAL OF CHEMISTRY Vol.38 No.7
<P>A successful method has been demonstrated for the synthesis of a mesoporous organic–inorganic nanohybrid using amine functionalized polyhedral oligomericsilsesquioxane (POSS) and pluronic polymer as a silica precursor and structure directing agent, respectively. The results confirmed the presence of porous structure, along with the high surface area and uniform pore size distribution which can be utilized for various applications namely catalysis, drug-delivery, <I>etc.</I></P> <P>Graphic Abstract</P><P>A novel mesoporous silica with high surface area and ordered porosity has been developed using <I>N</I>-methylamino POSS and dichloromethylsilane. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4nj00292j'> </P>
Gandhi Jeet,Suthar Disha,Patel Hetal,Shelat Pragna,Parejiya Punit 경희대학교 융합한의과학연구소 2021 Oriental Pharmacy and Experimental Medicine Vol.21 No.3
A widespread of superficial fungal infections deals with concerns related to current therapeutic regimen such as drug resistance and adverse events associated with the same which leads exploration of natural oils as an antifungal agent. The aim of present work is to the development of clove oil loaded microemulsion based gel for treatment of superficial fungal infections. The microemulsion based gel was prepared by phase titration method and optimized using D-optimal design considering globule size, drug permeation and drug retention on skin as critical quality attributes. The MIC and zone of inhibition of clove oil was found to be 2.2 mg/ml and 38 mm respectively. A pale to yellowish transparent microemulsion had a globule size, zeta-potential and PDI of 14.41 nm, 0.73 and 0.0113 respectively indicating a stable microemulsion. A clove oil loaded microemulsion based gel (CLMBG) with a pH of 6.27 and viscosity of 12.87 m.pas/sec exhibited a comparable texture profile to marketed preparation. The drug release of the CLMBG with a drug content of 102.6 ± 4% in acetate buffer pH 5.5 was 98.5 ± 0.35% ensuring complete drug release from the formulation. Ex-vivo drug permeation study and skin irritation study dictated the retention of drug at site of action and the formulation to be non-irritant. The antifungal study proved the formulation to have similar efficacy as the marketed product (clobet gel). The stability study indicated the product to be safe, efficacious and stable formulation. From the above results, it can be derived that clove oil loaded microemulsion based gel can be a promising alternative to current antifungal regimens.
First Order Differential Subordinations for Carathéodory Functions
Gandhi, Shweta,Kumar, Sushil,Ravichandran, V. Department of Mathematics 2018 Kyungpook mathematical journal Vol.58 No.2
The well-known theory of differential subordination developed by Miller and Mocanu is applied to obtain several inclusions between $Carath{\acute{e}}odory$ functions and starlike functions. These inclusions provide sufficient conditions for normalized analytic functions to belong to certain class of Ma-Minda starlike functions.
Gandhi, R.,Chandrasekar, S.,Nagarajan, C. The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.4
In recent times, gas insulated medium voltage (MV) circuit breakers (CB) form a vital component in power system network, considering its advantages such as reduced size and safety margins. Gas insulation characteristics of circuit breakers are generally measured by lightning impulse (LI) test according to IEC standard 60060-1 as a factory routine test. Considering the environmental issues of $SF_6$ gas, many research works are being carried out towards the mixture of $SF_6$ gases for high voltage insulation applications. However, few reports are only available regarding the LI withstand and streamer propagation characteristics (at both positive and negative polarity of waveform) of $SF_6/N_2$ gas mixture insulated medium voltage circuit breakers. In this paper, positive and negative polarity LI tests are carried out on 22 kV medium voltage circuit breaker filled with $SF_6/N_2$ gas mixture at different gas pressures (1-5 bar) and at different gas mixture ratios. Important LI parameters such as breakdown voltage, streamer velocity, time to breakdown and acceleration voltage are evaluated with IEC standard LI ($1.2/50{\mu}s$) waveform. Weibull distribution analysis of LI breakdown voltage data is carried out and 50% probability breakdown voltage, scale parameter and shape parameter are evaluated. Results illustrate that the $25%SF_6+75%N_2$ gas filled insulation considerably enhances the LI withstand and breakdown strength of MV circuit breakers. LI breakdown voltage of circuit breaker under negative polarity shows higher value when compared with positive polarity. Results show that maintaining the gas pressure at 0.3 MPa (3 bar) with 10% $SF_6$ gas mixed with 90% $N_2$ will give optimum lighting impulse withstand performance of 22 kV MV circuit breaker.
Gandhi Pandiyan Indira,Gunasekaran Kulaiyappa,Poonguzhali Selvaraj,Anandham Rangasamy,Kim Gil-Hah,Chung Keun-Yook,Sa Tong-Min Korean Society of Applied Entomology 2005 Journal of Asia-Pacific Entomology Vol.8 No.4
Laboratory experiment was conducted to compare the relative toxicity of biopesticides like Pseudomonas fluorescens strain pf1 and neem oil with imidacloprid, quinalphos, and endosulfan against an egg parasitoid, Trichogramma chilonis, and a predatory green lacewing, Chrysoperla carnea. Biopesticides were safer than chemical insecticides in minimizing harmful effects on development and behavior of two natural enemies. P. fluorescens treatment recorded high parasitism (${\thickapprox}73%$) and parasitoid egg development (${\thickapprox}72%$) of T. chilonis. It also gave high egg (${\thickapprox}75%$) development on C. carnea. Neem oil recorded 58.9 % parasitoid emecrgence, and 59.3 % parasitism, and 63.1 % egg hathability. Other chemical insecticides exhibited high damages on the natural enemies.