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Saratale, Ganesh Dattatray,Saratale, Rijuta Ganesh,Kim, Sang Hyoun,Kumar, Gopalakrishnan Elsevier 2018 International journal of hydrogen energy Vol.43 No.25
<P><B>Abstract</B></P> <P>This work evaluated the effects of individual alkaline, sodium carbonate (Na<SUB>2</SUB>CO<SUB>3</SUB> denoted as; NaC), sodium sulfide (Na<SUB>2</SUB>SO<SUB>3</SUB> denoted as; NaS) and combination of NaC + NaS pretreatment for the saccharification of sugarcane bagasse (SCB). The effects of different pretreatments on chemical composition and structural complexity of SCB in relation with its saccharification were investigated. For enzymatic hydrolysis of pretreated SCB we have utilized the produced crude enzymes by <I>Streptomyces</I> sp. MDS to make the process more cost effective. A enzyme dose of 30 filter paperase (FPU) produced a maximum reducing sugar (RS) 592 mg/g with 80.2% hydrolysis yield from NaC + NaS pretreated SCB under optimized conditions. The resulted enzymatic hydrolysates of each pretreated SCB were applied for hydrogen production using <I>Clostridium beijerinckii</I> KCTC1785. NaC + NaS pretreated SCB hydrolysates exhibited maximum H<SUB>2</SUB> production relative to other pretreatment methods. Effects of temperature, initial pH of culture media and increasing NaC + NaS pretreated SCB enzymatic hydrolysates concentration (2.5–15 g/L) on bioH<SUB>2</SUB> production were investigated. Under the optimized conditions, the cumulative H<SUB>2</SUB> production, H<SUB>2</SUB> production rate, and H<SUB>2</SUB> yield were 1485 mL/L, 61.87 mL/L/h and 1.24 mmol H<SUB>2</SUB>/mol of RS (0.733 mmol H<SUB>2</SUB>/g of SCB), respectively. The efficient conversion of the SCB hydrolysate to H<SUB>2</SUB> without detoxification proves the viability of process for cost-effective hydrogen production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Pretreatments of alkaline, sodium carbonate, sodium sulfide and combination demonstrated for sugarcane baggase. </LI> <LI> Several crucial factors towards optimization were carried out. </LI> <LI> Peak 59.2 g/L of reducing sugar (RS) with 80.2% hydrolysis yield from NaC + NaS pretreated SCB. </LI> <LI> Significant hydrogen production and process optimization using SCB hydrolysates studied in detail. </LI> </UL> </P>
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Saratale, Ganesh Dattatraya,Saratale, Rijuta Ganesh,Benelli, Giovanni,Kumar, Gopalakrishnan,Pugazhendhi, Arivalagan,Kim, Dong-Su,Shin, Han-Seung Springer-Verlag 2017 Journal of cluster science Vol.28 No.3
<P>The current investigation highlighted a novel cost-effective green synthesis of silver nanoparticles (AgNPs) using Argyreia nervosa leaves extract (ANE) as a potential reducing and capping agent. Surface plasmon resonance confirmed the formation of AgNPs with maximum absorbance at lambda (max) = 435 nm. FTIR revealed the involvement of biological macromolecules of ANE in the synthesis and stabilization of AgNPs. HRTEM images showed that the size of the spherical AgNPs ranged between 5 and 40 nm with average particle size of about 15 nm. The ANE-AgNPs showed inhibition activity against carbohydrate digestive enzymes alpha-amylase and alpha-glucosidase, with EC50 of 55.5 and 51.7 A mu g/mL, respectively, indicating its antidiabetic potential. The in vitro antioxidant activity of ANE-AgNPs was evaluated in terms of ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) and DPPH (1,1-diphenyl-2-picrylhydrazyl) free radicals scavenging assays with IC50 value of 44.3 and 55.9 A mu g/mL, respectively. The AgNPs displayed strong antibacterial activity against foodborne bacteria with zone of inhibition 16.0 and 12.5 mm for Escherichia coli and Staphylococcus aureus, respectively, and also exhibited strong synergistic antibacterial activity together with standard antibiotics. The biological activity in terms of antioxidant, antidiabetic and antibacterial potential could be useful in various bio-applications such as cosmetics, food, and biomedical industry.</P>
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Saratale, Rijuta Ganesh,Shin, Han Seung,Ghodake, Gajanan S.,Kumar, Gopalakrishnan,Oh, Min Kyu,Saratale, Ganesh Dattatraya Elsevier 2018 Bioresource technology Vol.258 No.-
<P><B>Abstract</B></P> <P>This study focuses on development of calcium peroxide (CaO<SUB>2</SUB>) pretreatment that removes major part of lignin but retaining most of sugar components of kenaf core powder (KCP) biomass. In chemical pretreatment, usually higher loss of biomass occurs which was less during this pretreatment strategy. Supplementation of inorganic salts; manganese sulfate (MnSO<SUB>4</SUB>) and cobalt chloride (COCl<SUB>2</SUB>) in CaO<SUB>2</SUB> pretreatment resulted in maximum delignification of KCP relative to individual CaO<SUB>2</SUB> pretreatment. Maximum glucose yield (98%) and hydrolysis yield (80.5%) was achieved after enzymatic hydrolysis (30 FPU/g of KCP) under optimized conditions. Analytical results proved effective lignin removal and significant destruction of KCP with this pretreatment strategy. Finally, utilization of KCP enzymatic hydrolysates by developed strain <I>Klebsiella pneumoniae</I> KMK05 resulted in maximum 2,3-butanediol (BDO) production (10.42 g/L) and BDO titer (0.385 g/g of sugar). BDO titer achieved with KCP derived sugars were found comparable with the mixture of standard sugars which is notable.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Developed CaO<SUB>2</SUB> pretreatment & optimized various operational parameters for KCP biomass. </LI> <LI> Addition of inorganic salts improved delignification, glucose yield and total sugar recovery. </LI> <LI> Maximum BDO production (10.42 g/L) was achieved using <I>Klebsiella pneumoniae</I> KMK05. </LI> <LI> This novel pretreatment strategy abstained loss of sugar components of biomass. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Electrochemical Oxidation of Phenol for Wastewater Treatment Using Ti/PbO2 Electrode
Saratale, Rijuta Ganesh,Hwang, Kyoung-Jin,Song, Ji-Young,Saratale, Ganesh Dattatray,Kim, Dong-Su American Society of Civil Engineers 2016 Journal of environmental engineering Vol.142 No.2
<P>The electrochemical oxidation of phenol was studied using a Ti/PbO2 electrode prepared by the electrodeposition method with PbO2 coated on Ti. The structural and morphological activity of Ti/PbO2 was analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and intermediates formed after degradation of phenol were quantitatively assessed by high-pressure liquid chromatography (HPLC). Optimization of various parameters such as current density, initial phenol concentration, initial solution pH, and different temperature and dose of Fe2+ on electrochemical degradation of phenol using Ti/PbO2 were investigated. Complete removal of phenol (250mgL-1) was observed at 50 degrees C, potential difference (5V), and at pH 2. Experimental results showed that the phenol removal rate increased with increasing current intensity along with significant reduction in total organic carbon (TOC). Fundamental kinetic data obtained for the degradation of phenol by Ti/PbO2 was found to follow in accordance with the zero-order kinetics with respect to the phenol concentration. This paper is expected to be useful for the development of electrochemical process using Ti/PbO2 for the degradation of phenol containing wastewater. (C) 2015 American Society of Civil Engineers.</P>
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Ganesh, M. Gokul,Lavenya, K.,Kirubashini, K.A.,Ajeesh, G.,Bhowmik, Shantanu,Epaarachchi, Jayantha Ananda,Yuan, Xiaowen Techno-Press 2017 Advances in aircraft and spacecraft science Vol.4 No.6
This investigation highlights rationale of electrically conductive nano adhesives for its essential application for Electromagnetic Interference (EMI) Shielding in satellites and Lightning Strike Protection in aircrafts. Carbon Nano Fibres (CNF) were functionalized by electroless process using Tollen's reagent and by Plasma Enhanced Chemical Vapour Deposition (PECVD) process by depositing silver on CNF. Different weight percentage of CNF and silver coated CNF were reinforced into the epoxy resin hardener system. Scanning Electron Microscopy (SEM) micrographs clearly show the presence of CNF in the epoxy matrix, thus giving enough evidence to show that dispersion is uniform. Transmission Electron Microscopy (TEM) studies reveal that there is uniform deposition of silver on CNF resulting in significant improvement in interfacial adhesion with epoxy matrix. There is a considerable increase in thermal stability of the conductive nano adhesive demonstrated by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). Four probe conductivity meters clearly shows a substantial increase in the electrical conductivity of silver coated CNF-epoxy composite compared to non-coated CNF-epoxy composite. Tensile test results clearly show that there is a significant increase in the tensile strength of silver coated CNF-composites compared to non-coated CNF-epoxy composites. Consequently, this technology is highly desirable for satellites and EMI Shielding and will open a new dimension in space research.
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An Approach to Brain Tumor Segmentation and Severity Analysis using Particle Swarm Optimization
Ganesh Prasad Bhatta 한국디지털융합학회 2019 IJICTDC Vol.4 No.1
Medical image processing is one of the most challenging and emerging filed. Processing of medical image is one of the important tasks for the diagnosis of brain tumor. Image segmentation is required for detection of brain tumors, which is a quite complicated job if performed automatically. In recent time, scientists from various fields including medical, mathematical and computer science have collaborated to find out a better understanding of the disease and devise more cost-effective treatments. Due to advancements in the field of science and technology, we have innumerous methods for image segmentation which are used for the detection of brain tumor and to clearly recognize it from MRI imagery. Various methods and algorithms have been implemented for segmenting MRI imagery. This work implements particle swarm optimization technique to recognize brain tumor by characterizing MRI images. Machine learning algorithm is used for severity analysis of brain tumor.
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Ganesh B. Gathalkar,Deepak D. Barsagade,Avalokiteswar Sen 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.3
Xanthopimpla pedator is a major pupal endoparasitoid of tropical tasar silkworm, Antheraea mylitta. Extensive parasitism by X. pedator results in pupal (seed) mortality and broken cocoons, which declines the wild tasar silk production. A detailed account is given on the oviposition behaviour of the female X. pedator and feeding behaviour of its immature forms in the pupa of A. mylitta. Scanning electron microscopic (SEM) details of the ovipositor of X. pedator revealed the presence of various mechano- and chemoreceptors, which regulate host discrimination and oviposition behaviour. The oviposition and feeding behaviour of X. pedator were evaluated in the field as well as in situ conditions. In addition, the invasion caused by X. pedator on A. mylitta, are also described. Host-parasitoid interactions are also discussed and recorded frame-by-frame video-graphically. The parasitoid X. pedator, arrests development and eventually the survival of A. mylitta. We also assume that parasitism by X. pedator in tasar culture is due to the microhabitat and food content of pupal host A. mylitta, which favors the development of parasitoid.
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Quality of Life among Breast Cancer Patients In Malaysia
Ganesh, Sri,Lye, Munn-Sann,Lau, Fen Nee Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Background: Among the factors reported to determine the quality of life of breast cancer patients are socio-demographic background, clinical stage, type of treatment received, and the duration since diagnosis. Objective: The objective of this study was to determine the quality of life (QOL) scores among breast cancer patients at a Malaysian public hospital. Materials and Methods: This cross-sectional study of breast cancer patients was conducted between March to June 2013. QOL scores were determined using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) and its breast cancer supplementary measure (QLQ-BR23). Both the QLQ-C30 and QLQ-BR23 assess items from functional and symptom scales. The QLQ-C30 in addition also measures the Global Health Status (GHS). Systematic random sampling was used to recruit patients. Results: 223 breast cancer patients were recruited with a response rate of 92.1%. The mean age of the patients was 52.4 years (95% CI = 51.0, 53.7, SD=10.3). Majority of respondents are Malays (60.5%), followed by Chinese (19.3%), Indians (18.4%), and others (1.8%). More than 50% of respondents are at stage III and stage IV of malignancy. The mean Global Health Status was 65.7 (SD = 21.4). From the QLQ-C30, the mean score in the functioning scale was highest for 'cognitive functioning' (84.1, SD=18.0), while the mean score in the symptom scale was highest for 'financial difficulties' (40.1, SD=31.6). From the QLQ-BR23, the mean score for functioning scale was highest for 'body image' (80.0, SD=24.6) while the mean score in the symptom scale was highest for 'upset by hair loss' (36.2, SD=29.4). Two significant predictors for Global Health Status were age and employment. The predictors explained 10.6% of the variation of global health status ($R^2=0.106$). Conclusions: Age and employment were found to be significant predictors for Global Health Status (GHS). The Quality of Life among breast cancer patients reflected by the GHS improves as age and employment increases.
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