Case Study of Seismic Effect on Hyperbolic Cooling Towers

This paper deals with the study of seismic analysis of hyperbolic cooling towers. Two existing cooling towers are chosen from Bellary thermal power station (BTPS) as case study. FEA based ANSYS Software is used for the analysis. The boundary conditions considered are Top end free and Bottom end fixed. The material properties of the cooling tower are young’s modulus 31GPa, Poisson’s Ratio 0.15 and density of RCC 25 kN/m3. The analysis is carried out using 8 noded SHELL 93 element. Maximum deflection, Maximum Principal Stress & Strain, Maximum Von Mises Stress, Strains are obtained. The variation in max principal stress v/s thickness, maximum deflection v/s thickness is plotted graphically.Keywords: Cooling tower, Stress, Strain, SHEL

Effect Of Composition, Morphology And Semiconducting Properties On The Efficiency Of Cuin1-xgaxse2-ysy Thin-film Solar Cells Pre

A rapid thermal processing (RTP) reactor for the preparation of graded CuIn1-xGaxSe2-ySy (CIGSeS) thin-film solar cells has been designed, assembled and is being used at the Photovoltaic Materials Laboratory of the Florida Solar Energy Center. CIGSeS films having the optimum composition, morphology, and semiconducting properties were prepared using RTP. Initially films having various Cu/(In+Ga) ratios were prepared. In the next step selenium incorporation in these films was optimized, followed by sulfur incorporation in the surface to increase the bandgap at the surface. The compositional gradient of sulfur was fine-tuned so as to increase the conversion efficiency. Materials properties of these films were characterized by optical microscopy, SEM, AFM, EDS, XRD, GIXRD, AES, and EPMA. The completed cells were extensively studied by electrical characterization. Current-voltage (I-V), external and internal quantum efficiency (EQE and IQE), capacitance-voltage (C-V), and light beam induced current (LBIC) analysis were carried out. Current Density (J)-Voltage (V) curves were obtained at different temperatures. The temperature dependence of the open circuit voltage and fill factor has been estimated. The bandgap value calculated from the intercept of the linear extrapolation was ~1.1-1.2 eV. Capacitance-voltage analysis gave a carrier density of ~4.0 x 1015 cm-3. Semiconductor properties analysis of CuIn1-xGaxSe2-ySy (CIGSeS) thin-film solar cells has been carried out. The values of various PV parameters determined using this analysis were as follows: shunt resistance (Rp) of ~510 Ohms-cm2 under illumination and ~1300 Ohms-cm2 in dark, series resistance (Rs) of ~0.8 Ohms-cm2 under illumination and ~1.7 Ohms-cm2 in dark, diode quality factor (A) of 1.87, and reverse saturation current density (Jo) of 1.5 x 10-7A cm-2. The efficiency of 12.78% obtained during this research is the highest efficiency obtained by any University or National Lab for copper chalcopyrite solar cells prepared by RTP. CIGS2 cells have a better match to the solar spectrum due to their comparatively higher band-gap as compared to CIGS cells. However, they are presently limited to efficiencies below 13% which is considerably lower than that of CIGS cells of 19.9%. One of the reasons for this lower efficiency is the conduction band offset between the CIGS2 absorber layer and the CdS heterojunction partner layer. The band offset value between CIGS2 and CdS was estimated by a combination of ultraviolet photoelectron spectroscopy (UPS) and Inverse Photoemission Spectroscopy (IPES) to be -0.45 eV, i.e. a cliff is present between these two layers, enhancing the recombination at the junction, this limits the efficiency of CIGS2 wide-gap chalcopyrite solar cells

Nonlinear Analysis of Existing RC Bridge Using SAP 2000

There are many literatures available on the seismic evaluation procedures of multi-storied buildings using nonlinear static (pushover) analysis. There are presently no comprehensive guidelines to assist the practicing structural engineer to evaluate existing bridges and suggest design and retrofit schemes. In order to address this problem, the aims of the present project was to carry out a seismic evaluation case study for an existing RC bridge using nonlinear static (pushover) analysis.  In the present study a 4 Span RC Bridge  existed in SH-12 in Karnataka, India, was selected and by defining FEMA 356 Auto hinges conducted Nonlinear Static (Pushover) Analysis using (ATC 40) Capacity Spectrum Method and software SAP2000 was used to analyze the Bridge. The evaluation results presented here shows that the selected bridge does not have the capacity to meet the desired performance level and it requires retrofitting. Keywords: RC Bridge, FEMA 356, Nonlinear Static (Pushover) Analysis, SAP 2000, ATC 40

CLINICAL EVALUATION OF AGNIKARMA IN THE MANAGEMENT OF KADARA W.S.R TO CORN

Kadara is a Kshudra Roga. It does not cause any threat to life but can trouble person a lot. Initially Kadara is a painless condition but with its progress it can become painful. On the basis of clinical presentation the disease Kadara can be compared with Corn in modern medicine. Corn is a localized hyperkeratosis of skin in cone shape with inwardly pointed apex and outwardly placed base it is palpable as a nodule due to horny induration with a hard center. Histologically it is composed of keratin masses with intact basal layers. Even though, there are varieties of modalities aiming at cure of Kadara viz., Ointments , Corn Caps, Surgical Excision etc, but none of them are complete and devoid of recurrences. When the condition of Kadara is Surgically Excised, recurrences have been reported as it is having recurrence tendency. Hence, to overcome the recurrence ‘Agni Karma’ can be the ideal procedure. With this ideology, in the present study an effort has been made to assess the efficacy of ‘Agni Karma’ after Shastra Karma in the management of Kadara vis-à-vis Corn.Comparative efficacy of the therapies in Group A and Group B showed statistically highly Significant (p<0.001) results in the parameters of assessment of pain and tenderness with ‘t’ value of 3.99 and 5.32 respectively.            Comparative efficacy of the therapies in Group A and Group B showed statistically Significant (p<0.001) results in the parameters of assessment of itching and recurrence with ‘t’ value of 3.46 and 2.62 respectively. Comparative efficacy of the therapies in Group A and Group B showed statistically non Significant (p<0.001) results in the parameters of assessment of Size of Corn and Infection with ‘t’ value of 1.58 and 1.01 respectively

EraseNet: A Recurrent Residual Network for Supervised Document Cleaning

Document denoising is considered one of the most challenging tasks in computer vision. There exist millions of documents that are still to be digitized, but problems like document degradation due to natural and man-made factors make this task very difficult. This paper introduces a supervised approach for cleaning dirty documents using a new fully convolutional auto-encoder architecture. This paper focuses on restoring documents with discrepancies like deformities caused due to aging of a document, creases left on the pages that were xeroxed, random black patches, lightly visible text, etc., and also improving the quality of the image for better optical character recognition system (OCR) performance. Removing noise from scanned documents is a very important step before the documents as this noise can severely affect the performance of an OCR system. The experiments in this paper have shown promising results as the model is able to learn a variety of ordinary as well as unusual noises and rectify them efficiently.Comment: 10 pages, 5 figures, attempting for publication in International Journal on Document Analysis and Recognition (IJDAR

Ayurvedic diet plays an important role in Psoriasis patient - A Case Study

Prevention, treatment and management with right Ayurvedic diet exercise, mental health and proper Langhan (Fasting) in today’s environment is definitely promising to clear skin disease like psoriasis. As you know Psoriasis is a chronic inflammatory skin disease. Ayurveda is an oldest system of medicine practiced in various parts of India since many years. In Ayurveda, several herbs, formulations and advised proper Ayurvedic diet which have been used in the management of Psoriasis - Kushta Roga (skin disorders). Here, an effort was made to treat the 45 yrs female patient by applying Ayurvedic diet, with life style changes along with Ayurvedic medication, advised strictly Ayurvedic diet for one month.  At the end of one month this management resulted in reduced severity score i.e., Itching, redness, thickness and scaling of skin area. Also found reduction in weight and reduction in Hba1c of the patient

Reductive Biotransformation of Ethyl Acetoacetate: A Comparative Studies using Free and Immobilized Whole Yeast Cells

Bioreduction of ethyl acetoacetate with free and immobilized yeast whole cell was achieved by using water and sucrose combination. After detachment from immobilized beads under basic condition, the corresponding ethyl(S)-(+)-3-hydroxybutanoate was isolated with 98 to 100% yield. Immobilized beads of yeast whole cell were prepared at different temperature which affects the morphology and physiology of the beads for the diffusion of the enzyme, which shown the maximum conversion of the substrate to products as compared to the free yeast whole cell

Implementation and Design of Customer Relationship Management for Openbravo

Customer Relationship management is the strongest and the most efficient approach in maintaining and creating relationships with customers.CRM systems are designed to com-pile information on customers across different channels which could include the company?s website, telephone, live chat, direct mail, marketing materials and social media. The purpose of the system is to capture the potential customer details using CRM Openbravo

Extraction, purification and characterization of hyaluronic acid from Rooster comb

Hyaluronic acid, is extract by different procedures from various sources like pig, rabbit, oxes and human are available, but these processes have certain imitations like low yield, and also it requires the killing of these animals which is against the experimental ethics. In the present study, we have carried out the extraction of hyaluronic acid from cock’s comb which was further analyzed with qualitative test, viscosity, UV absorption, endotoxin detection assay. Also, the protein contamination of extracted hyaluronic acid was determined by using SDS-PAGE of hyaluronic acid was studied for checking the protein contaminants and it was noted that there were no bands observed in the well loaded with extracted hyaluronic acid sample indicating that the final extract of hyaluronic acid is not contaminated with the protein. The extraction and purification of hyaluronic acid by using the method reported here give pure hyaluronic acid. The viscosity of extracted hyaluronic acid was found to be 2.55 poise which is economical and can be used for industrial production of hyaluronic acid having clinical application

Fruit peel waste: characterization and its potential uses

Globally, India is the leading producer of fruits. Fruits after consumption leave a peel which is a nuisance to the environment as a solid waste. In this article, commonly available large volume-fruit peels (FP) (viz. banana, orange, citrus, lemon and jackfruit) were investigated for surface, physical and chemical characteristic with a view to propose their valorization in detail. Each FP was characterized by proximate and ultimate analysis, porosity, particle density, bulk density, point of zero charge (pHpac), surface pH, surface charges, water absorption capacity, BET surface area, scanning electron microscopy, Fourier transform infrared spectroscopy and TGA/derivative of thermogravimetric. The BET surface area of FP is very less, between 0.60 and 1.2 m2/g. The pHpac and surface pH values of orange peel (OP), citrus peel (CP), lemon peel (LP) and jackfruit peels (JFP) are in the range of 3-4. The pHpac value and surface pH of banana peel (BP) is closer to 7. The order of surface acidity is OP > LP > CP > JFP > BP. From TG curves it is clear that FPs are stable below 150°C. The results will be useful for rational design, when FP is used as a substrate for bioactive compounds, phenolic antioxidants, organic acids, enzymes, biofertilizer, production of energy and as absorbents