21 research outputs found
Copper modified iron oxide as heterogeneous photo-Fenton reagent for the degradation of coomasie brilliant blue R-250
943-948The heterogeneous photo-Fenton degradation of coomasie brilliant
blue RтАУ250 under visible light has been investigated using copper modified iron
oxide, which has been prepared by coprecipitation method and characterized by
IR spectroscopy, scanning electron microscopy and X-ray diffraction. The rate
of photocatalytic degradation of dye follows pseudo-first order kinetics. The
effects of various parameters like pH,
concentration of dye, amount of photocatalyst, amount of H2O2
and light intensity on the rate of the photo-Fenton degradation has also been
studied. Chemical oxygen demand of the reaction mixture before and after
exposure has been determined. A tentative mechanism for the photocatalytic
degradation has been proposed, wherein involvement of тАвOH radicals
has been confirmed by the drastic reduction in the reaction rate in the
presence of тАвOH radical scavengers such as isopropanol and butylated
hydroxy toluene. The retardation with butylated hydroxy toluene is much higher
than with isopropanol. Under similar conditions, efficiencies of Fe2O3
and copper modified Fe2O3 have been compared for
the photocatalytic degradation of coomasie brilliant blue R-250
Superparamagnetic behaviour of nano-particles of Ni-Cu ferrite
169-172The nano-particles of Ni0.8Cu0.2Fe2O4
with a log-normal size distribution of the median diameter of 9 nm and
standard deviation of 0.60 have been synthesized by the chemical
co-precipitation method followed by annealing at 500┬░C. The cubic spinel structure in single phase has been confirmed by
X-ray diffraction. Reduction in saturation magnetization has been explained on
the basis that the magnetic moments in the surface layers, outside the core are
in a state of frozen disorder. The dc magnetization
is measured which show that the nano-particle sample is super-paramagnetic
above the blocking temperature of 250 K. Secondly, the departure of fc curve from the zfc curve is suggestive of temporal relaxation
Degradation of Sunset Yellow FCF using copper loaded bentonite and H2O2 as photo-Fenton like reagent
In the present work, photo-Fenton degradation of Sunset Yellow FCF under visible light was carried out by using copper loaded bentonite and hydrogen peroxide. The photocatalyst was prepared by loading copper ions on bentonite by wet impregnation method. The rate of photocatalytic degradation of dye was measured spectrophotometrically by measuring absorbance of the reaction mixture at regular time intervals. The effect of various parameters such as pH, concentration of dye, amount of photocatalyst, amount of H2O2 and light intensity on the reaction rate has also been studied. Characterization of photocatalyst has been done by IR spectroscopy, scanning electron microscopy and X-ray diffraction. The Chemical Oxygen Demand (COD) of the reaction mixture has been determined before and after treatment. A tentative mechanism involving ┬╖тЙбOH radical as an oxidant for degradation of dye has also been proposed. Involvement of ┬╖тЙбOH radicals as an active oxidizing agent has been confirmed by using isopropanol and butylated hydroxy toluene (BHT) as radical scavengers. It has been observed that the rate of reaction is drastically reduced in the presence of these scavengers. The rate of reaction is much retarded by using BHT as compared with isopropanol
Safety and efficacy of transcoronary transfer of human neonatal stem cells to ischemic myocardium using a novel cell-delivery system (CIRCULATE catheter) in swine model of acute myocardial infarction
An intronic DNA sequence within the mouse Neuronatin gene exhibits biochemical characteristics of an ICR and acts as a transcriptional activator in Drosophila
Imprinting control regions (ICRs) are domains within imprinted loci that are essential for their establishment and maintenance. Imprinted loci can extend over several megabases, encompass both maternally and paternally-expressed genes and exhibit multiple and complex epigenetic modifications including large regions of allele-specific DNA methylation. Differential chromatin organisation has also been observed within imprinted loci but is restricted to the ICRs. In this study we report the identification of a novel imprinting control region for the mouse Neuronatin gene. This biochemically defined putative ICR, present within its 250 bp second intron, functions as transcriptional activator in Drosophila. This is unlike other known ICRs which have been shown to function as transcriptional silencers. Furthermore, at the endogenous locus, the activating signal from the ICR extends to the Neuronatin promoter via allele-specific unidirectional nucleosomal positioning. Our results support the proposal that the Neuronatin locus employs the most basic mechanism for establishing allele-specific gene expression and could provide the foundation for the multiplex arrangements reported at more complex loci
Mesenchymal stem cells preserve neonatal right ventricular function in a porcine model of pressure overload
Study design and rationale for ELPIS: A phase I/IIb randomized pilot study of allogeneic human mesenchymal stem cell injection in patients with hypoplastic left heart syndrome
Despite advances in surgical technique and postoperative care, long-term survival of children born with hypoplastic left heart syndrome (HLHS) remains limited, with cardiac transplantation as the only alternative for patients with failing single ventricle circulations. Maintenance of systemic right ventricular function is crucial for long-term survival, and interventions that improve ventricular function and avoid or defer transplantation in patients with HLHS are urgently needed. We hypothesize that the young myocardium of the HLHS patient is responsive to the biological cues delivered by bone marrow-derived mesenchymal stem cells (MSCs) to improve and preserve right ventricle function. The ELPIS trial (Allogeneic Human MEsenchymal Stem Cell Injection in Patients with Hypoplastic Left Heart Syndrome: An Open Label Pilot Study) is a phase I/IIb trial designed to test whether MSC injection will be both safe and feasible by monitoring the first 10 HLHS patients for new major adverse cardiac events. If our toxicity stopping rule is not activated, we will proceed to the phase IIb component of our study where we will test our efficacy hypothesis that MSC injection improves cardiac function compared with surgery alone. Twenty patients will be enrolled in a randomized phase II trial with a uniform allocation to MSC injection versus standard surgical care (no injection). The 2 trial arms will be compared with respect to improvement of right ventricular function, tricuspid valve annulus size, and regurgitation determined by cardiac magnetic resonance and reduced mortality, morbidity, and need for transplantation. This study will establish the safety and feasibility of allogeneic mesenchymal stem cell injection in HLHS patients and provide important insights in the emerging field of stem cell-based therapy for congenital heart disease patients
рдмрд╣реБрдЬрди рд╕рд╛рд╣рд┐рддреНрдп рдХреА рдкреНрд░рд╕реНрддрд╛рд╡рдирд╛
International audienceThis book was originally published in Hindi with the title 'Bahujan Sahitya ki Prastavan" [Introduction to Bahujan Literature] in the year 2016. Its English translation was also published in the same year.This book presents a discussion on the concept of Bahujan literature in Hindi and Indian languages. On the one hand, this book monitors the changes taking place in Hindi literature, on the other hand, outlines the basic elements of the new debate that started in the field of literature in relation to the changing social and political scenarios after the implementation of the Mandal Commission. In today's Indian perspective, the Bahujan sections are тАУ Other Backward Classes, Scheduled Tribes, Scheduled Castes, Denotified Nomadic Castes, Pasmanda Minorities and Women. The concept of Bahujan literature sees similarity in all these sufferings and finds the causes of their exploitation more or less similar. This book is as important for the researchers of literature as it is for the conscious people who aspire to understand the literary perspective and also for those who consider themselves a part of the Bahujan community. This book answers all the questions related to Bahujan discourse.рдпрд╣ рдкреБрд╕реНрддрдХ рдореВрд▓ рд░реВрдк рд╕реЗ рд╣рд┐рдВрджреА рдореЗрдВ рд╡рд░реНрд╖ 2016 рдореЗрдВ 'рдмрд╣реБрдЬрди рд╕рд╛рд╣рд┐рддреНрдп рдХреА рдкреНрд░рд╕реНрддрд╛рд╡рдирд╛' рд╢реАрд░реНрд╖рдХ рд╕реЗ рдкреНрд░рдХрд╛рд╢рд┐рдд рд╣реБрдИ рдереАред рдЙрд╕рдХрд╛ рдпрд╣ рдЕрдВрдЧреНрд░реЗрдЬреА рдЕрдиреБрд╡рд╛рдж рднреА рдЙрд╕реА рд╡рд░реНрд╖ рдкреНрд░рдХрд╛рд╢рд┐рдд рд╣реБрдЖ рдерд╛редрдпрд╣ рдХрд┐рддрд╛рдм рд╣рд┐рдиреНрджреА рдФрд░ рднрд╛рд░рддреАрдп рднрд╛рд╖рд╛рдУрдВ рдореЗрдВ рдмрд╣реБрдЬрди рд╕рд╛рд╣рд┐рддреНрдп рдХреА рдЕрд╡рдзрд╛рд░рдгрд╛ рдкрд░ рд╡рд┐рдорд░реНрд╢ рдкреНрд░рд╕реНрддреБрдд рдХрд░рддреА рд╣реИред рдПрдХ рдУрд░ рдпрд╣ рдХрд┐рддрд╛рдм рд╣рд┐рдВрджреА рд╕рд╛рд╣рд┐рддреНрдп рдореЗрдВ рд╣реЛ рд░рд╣реЗ рдмрджрд▓рд╛рд╡реЛрдВ рдкрд░ рдирдЬрд░ рд░рдЦрддреА рд╣реИ рджреВрд╕рд░реА рдУрд░ рдордВрдбрд▓ рдХрдореАрд╢рди рдХреЗ рд▓рд╛рдЧреВ рд╣реЛрдиреЗ рдХреЗ рдмрд╛рдж рдмрджрд▓ рд░рд╣реЗ рд╕рдорд╛рдЬ рд╡ рд░рд╛рдЬрдиреАрддрд┐рдХ рдкрд░рд┐рджреГрд╢реНрдпреЛрдВ рдХреЗ рд╕рд╛рдкреЗрдХреНрд╖ рд╕рд╛рд╣рд┐рддреНрдп рдХреЗ рдХреНрд╖реЗрддреНрд░ рдореЗрдВ рд╢реБрд░реВ рд╣реБрдИ рдирдИ рдмрд╣рд╕ рдХреЗ рдмреБрдирд┐рдпрд╛рджреА рддрддреНрд╡реЛрдВ рдХреЛ рд░реЗрдЦрд╛рдВрдХрд┐рдд рднреА рдХрд░рддреА рд╣реИред рдЖрдЬ рдХреЗ рднрд╛рд░рддреАрдп рдкрд░рд┐рдкреНрд░реЗрдХреНрд╖реНрдп рдореЗрдВ рдмрд╣реБрдЬрди рддрдмрдХреЗ рд╣реИрдВ- рдЕрдиреНрдп рдкрд┐рдЫрдбрд╝рд╛ рд╡рд░реНрдЧ, рдЕрдиреБрд╕реВрдЪрд┐рдд рдЬрдирдЬрд╛рддрд┐рдпрд╛рдВ, рдЕрдиреБрд╕реВрдЪрд┐рдд рдЬрд╛рддрд┐рдпрд╛рдВ, рд╡рд┐рдореБрдХреНрдд рдШреВрдордВрддреВ рдЬрд╛рддрд┐рдпрд╛рдВ, рдкрд╕рдорд╛рдВрджрд╛ рдЕрд▓реНрдкрд╕рдВрдЦреНрдпрдХ рд╡ рд╕реНрддреНрд░рд┐рдпрд╛рдВ ред рдмрд╣реБрдЬрди рд╕рд╛рд╣рд┐рддреНрдп рдХреА рдЕрд╡рдзрд╛рд░рдгрд╛ рдЗрди рд╕рднреА рдХреА рдкреАрдбрд╝рд╛рдУрдВ рдореЗрдВ рд╕рдорд╛рдирддрд╛ рджреЗрдЦрддреА рд╣реИ рддрдерд╛ рдЗрдирдХреЗ рд╢реЛрд╖рдг рдХреЗ рдХрд╛рд░рдгреЛрдВ рдХреЛ рдХрдореЛрдмреЗрд╢ рд╕рдорд╛рди рдкрд╛рддреА рд╣реИред рдпрд╣ рдХрд┐рддрд╛рдм рд╕рд╛рд╣рд┐рддреНрдп рдХреЗ рд╢реЛрдзрд╛рд░реНрдерд┐рдпреЛрдВ рдХреЗ рд▓рд┐рдП рдЬрд┐рддрдирд╛ рдорд╣рддреНрд╡рдкреВрд░реНрдг рд╣реИ, рдЙрддрдирд╛ рд╣реА рд╕рд╛рд╣рд┐рддреНрдпрд┐рдХ рдирдЬрд░рд┐рдП рдХреЛ рд╕рдордЭрдиреЗ рдХреА рдЖрдХрдВрдХреНрд╖рд╛ рд░рдЦрдиреЗ рд╡рд╛рд▓реЗ рдЬрд╛рдЧрд░реВрдХ рд▓реЛрдЧреЛрдВ рдХреЗ рд▓рд┐рдП рднреА рдФрд░ рдЙрдирдХреЗ рд▓рд┐рдП рднреА рдЬреЛ рд╕реНрд╡рдпрдВ рдХреЛ рдмрд╣реБрдЬрди рдХрд╛ рд╣рд┐рд╕реНрд╕рд╛ рдорд╛рдирддреЗ рд╣реИрдВред рдлрд┐рд░ рдЪрд╛рд╣реЗ рд╡реЗ рд╕рд╛рдорд╛рдЬрд┐рдХ рдХрд╛рд░реНрдпрдХрд░реНрддрд╛ рд╣реЛрдВ рдпрд╛ рдлрд┐рд░ рд░рд╛рдЬрдиреЗрддрд╛ред рдмрд╣реБрдЬрди рд╡рд┐рдорд░реНрд╢ рд╕реЗ рдЬреБрдбтАНрд╝реЗ рд╕рднреА рд╕рд╡рд╛рд▓реЛрдВ рдХрд╛ рдпрд╣ рдХрд┐рддрд╛рдм рдЙрддреНрддрд░ рджреЗрддреА рд╣реИ