4,319 research outputs found
Resistência de cultivares de trigo ao nematóide formador de galhas Meloidogyne javanica.
No full textA cultura do trigo (Triticum aestivum L.) é uma cultura importante para a região do Sul do Brasil, mostrando boa adaptação para a região dos Cerrados e é cultivado em pequenas áreas do Estado de Goiás, Bahia, Minas Gerais, Mato Grosso do Sul e Distrito Federal. As informações sobre perdas causadas por nematoides das regiões de cerrados são deficientes. SHARMA (1979) pela primeira vez registrou ocorrência de nematoides fitoparasitos na cultura de trigo nos Cerrados do Distrito Federal. O nematoide formador de galhas, Meloidogyne javanica Treub,1885) Chitwood,1949, foi encontrado causando sérios danos à cultura do trigo. Posteriormente, o autor verificou a patogenicidade do referido nemat6ide em condições de casa-de-vegetação e simultaneamente foram feitas avaliações de resistência de 21 cultivares de trigo ao mesmo nematoide
sj-docx-1-pie-10.1177_09544089231170999 - Supplemental material for Parametric optimization and ranking analysis of basalt fiber–marble dust particulates–polyamide 66 polymer composites under dry sliding wear investigation
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231170999 for Parametric optimization and ranking analysis of basalt fiber–marble dust particulates–polyamide 66 polymer composites under dry sliding wear investigation by Ravi Prakash Sharma, Ankit Sharma, Sudhanraj Jeganmohan, Mukesh Kumar and Ashiwani Kumar in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-docx-2-pie-10.1177_09544089231170999 - Supplemental material for Parametric optimization and ranking analysis of basalt fiber–marble dust particulates–polyamide 66 polymer composites under dry sliding wear investigation
No full textSupplemental material, sj-docx-2-pie-10.1177_09544089231170999 for Parametric optimization and ranking analysis of basalt fiber–marble dust particulates–polyamide 66 polymer composites under dry sliding wear investigation by Ravi Prakash Sharma, Ankit Sharma, Sudhanraj Jeganmohan, Mukesh Kumar and Ashiwani Kumar in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-docx-1-pie-10.1177_09544089231190230 - Supplemental material for Mechanical and dry sliding wear performance evaluation of marble dust particulates–lapinus fiber–polyamide 66 polymer composites with ranking analysis using hybrid AHP-R method
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231190230 for Mechanical and dry sliding wear performance evaluation of marble dust particulates–lapinus fiber–polyamide 66 polymer composites with ranking analysis using hybrid AHP-R method by Ravi Prakash Sharma, Mukesh Kumar and Ashiwani Kumar in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
An Analysis of Healthcare System in India
No full textMaster of Arts -EconomicsI would like to express my deepest gratitude to my supervisor Dr. Ravi Kiran for her unwavering support, and mentorship through this project. This is also dedicated to my friends and my family who supported me on this journey. I would also like to extend my thanks my revered teachers at TIET who offered guidance and support over the course, specially Dr A. N. Sah; Dr Rakesh Sharma and Dr Shilpy Tyagi
Intraocular Lymphoma
No full text<p>Intraocular Lymphoma: Ravi Bypareddy, Ashwini Behera, Koushik Tripathy, Rohan Chawla, Pradeep Venkatesh, Yog Raj Sharma<br>DOS Times - Vol. 20, No. 6 December, 2014</p>
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Reliability testing and heat transfer enhancement of organic phase change materials / Ravi Kumar Sharma
No full textThe design and development of a thermal energy storage device require discrete selection of the appropriate phase change material (PCM) and a suitable container to contain them. This study focuses on the selection of PCMs for solar thermal energy storage devices and the improvement in their thermophysical properties. In addition, a new shape of the PCM container is also investigated using computational fluid dynamics.
The accelerated thermal cycle test is an essential requirement to ensure the thermal and chemical stability of selected PCMs to be used in practical applications. Solar energy being an unlimited natural energy source is used in a large number of applications such as solar water/air heating, cooking, drying and other domestic and commercial applications. On the other hand, this energy also has limitations as this is available only in the daytime. Storage of this abundantly available solar energy can be effectively used in the night hours or when there are no sunny days. Four organic PCMs-paraffin wax, palmitic acid, myristic acid, and polyethylene glycol (PEG) 6000, all in the melting temperature range of 50-70 ˚C, have been considered in this study and the changes in their thermal and chemical properties have been measured using the differential scanning calorimetry and the Fourier transform infrared techniques. The results of this research work revealed that the changes in the melting temperature of paraffin wax, palmitic acid, myristic acid, and PEG 6000 were in the range of +0.72 ˚C to +3.27 ˚C, -0.29 ˚C to +1.76 ˚C, -2 ˚C to +1.2 ˚C, and 3.77 to 3.94 ˚C respectively. The variation in the latent heat of fusion was found in the range of -9.8 to 14%, 3.28 to 18%, 0.9 to 10%, and 13 to 25 % for paraffin wax, palmitic acid, myristic acid, and PEG 6000 respectively.
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The low thermal conductivity of organic PCMs is a well-known drawback which limits their use in many domestic and industrial applications. A composite of palmitic acid and nano titanium dioxide (TiO2) was prepared and its phase change behavior was investigated. TiO2 nanoparticles of 0.5%, 1.0%, 3.0%, and 5.0% were dispersed into palmitic acid and the thermophysical properties of these nano composites were measured. The composite PCMs were characterized by FESEM, XRD, and FT-IR. The thermal properties, thermal stability and thermal reliability were ensured by DSC, TGA, and thermal cycle testing. FESEM images show the uniform dispersion of nanoparticles in the palmitic acid and FT-IR spectrum indicate that the composite PCM possesses good chemical stability and interaction between PCM and nanoparticles. The results of a thermal conductivity test show that the dispersion of the 5% nanoparticles enhances the thermal conductivity of palmitic acid by 80%.
Finally, a novel trapezoidal cavity is proposed for containing the PCM and a detailed parametric study was carried out using two nano enhanced PCMs, paraffin-Cu and water-Cu based on the computational study. The effect of side wall inclination angle, cold wall temperature, nanofluid’s initial temperature, cavity inclination, Grashof number on the total solidification time of nanofluid was simulated. The total solidification time for different wt% of Cu nanoparticles was also investigated in the trapezoidal cavity. The enthalpy–porosity technique is used to trace the solid–liquid interface. The inclination angle can be used efficiently to control the solidification time. In addition, the average Nusselt number along the hot wall for different angles, nanoparticles volume fractions, and Grashof number are presented graphically. The proposed predictions are very helpful in developing an improved latent heat thermal energy storage for the solar heat collector and for casting and mold design
Socrates in Old Comedy
No full textSeveral comedies rehearsed from 430 to 410 BCE deal with “education” (paideia). It has been rightly observed that these plays form a “subgenre” of Old Comedy. At least seven plays by six comedians (Cratinus, Teleclides, Callias, Eupolis, Amipsias, and Plato Comicus) target “wisdom” (sophia) and those who teach or acquire it, the “sophists” or “thinkers” (sophistai or phrontistai). Such intellectuals, or followers of them, form the choirs of five comedies that center around the matter of teaching and acquiring a new kind of wisdom. Such wisdom is ridiculed by the comedians as unheard of and weird. It consists of four distinct subjects that were not encompassed in traditional paideia, namely: A) The study of nature; B) Non-official religiosity; C) Fraudulent lyrical and rhetorical skills; D) Asceticism and poverty. All of these four subjects are core features of Aristophanes’ portrayal of Socrates. All other playwrights discuss A) without any reference to Socrates and his pupils. Callias is the only comedian who indirectly relates B) to Socrates. C) and D), on the contrary, appear to be unique features of Socrates, not only according to Aristophanes but also according to the other abovementioned comedians. In my paper, I deal with these four subjects, and show how they are related to the Socrates, and the Socratic features, portrayed by Old Comedy
Masquerade Syndrome
No full text<p>Masquerade Syndrome, Koushik Tripathy MD, DNB, Rashmi Singh MBBS, Rohan Chawla MD, FRCS, Yog Raj Sharma MS, Rajpal Vohra MD, Ravi Bypareddy MD, Subodh Kumar Singh MD<br>DOS Times - Vol. 20, No. 3 September, 2014</p>
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sj-docx-1-hol-10.1177_09596836231163486 – Supplemental material for Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau: Paleo-salinity records from Pangong Tso
No full textSupplemental material, sj-docx-1-hol-10.1177_09596836231163486 for Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau: Paleo-salinity records from Pangong Tso by Sumit Sagwal, Anil Kumar, Choudhurimayum Pankaj Sharma, Pradeep Srivastava, Shravi Agarwal and Ravi Bhushan in The Holocene</p
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