Showing papers by "SDM College of Engineering and Technology published in 2009"
TL;DR: In this paper, a single cylinder, four-stroke, direct injection, water-cooled CI engine operated in single fuel mode using Honge, Neem and Rice Bran oils.
115 citations
29 Aug 2009
TL;DR: In this paper, the performance evaluation of a newly designed, developed and fabricated dead weight machines to realize forces in the range of (2-50) N is reported, and the calibration of these load cells against the dead weight force machine shows that the repeatability (Rep) and reproducibility (Repr) are better than 0.003% and 0.005% respectively, over the entire range.
Abstract: Results of the performance evaluation of a newly designed, developed and fabricated dead weight machines to realize forces in the range of (2–50) N are reported in this paper. Precision load cells of 20N, 50N and 100N having an expanded uncertainty of ± 0.03% are used for this evaluation. The calibration of these load cells against the dead weight force machine shows that the repeatability (Rep) and reproducibility (Repr) are better than 0.003% and 0.005% respectively, over the entire range. The calibration data observed is found to closely agree with the calibration results obtained directly against the Physikalsich-Technische Bundesanstalt (PTB), Germany force standard machine having the relative measurement uncertainty of the force scale in the measuring range ≤ 0.002%.
9 citations
TL;DR: In this paper, the combined effect of surface roughness and couple stress fluid on the performance characteristics of squeeze film lubrication between two circular plates was analyzed using microcontinuum theory and the Christensen stochastic model.
Abstract: This paper describes the combined effect of surface roughness and couple stress fluid on the performance characteristics of squeeze film lubrication between two circular plates. Using microcontinuum theory for the couple stress fluid and the Christensen stochastic model for the surface roughness, the modified Reynolds equation is derived by assuming the roughness asperity heights to be small compared to the film thickness. An eigenvalue problem involving Bessel functions enables analysis of the Reynolds equation. The expressions for mean pressure, load-carrying capacity, and squeeze film time are obtained for various probability distribution functions (pseudo normal, rectangular, and inverse square root distributions) that characterize the roughness of the lubricating surfaces. The influence of roughness and couple stress on bearing characteristics is presented in terms of the relative percentage in load for all these roughness patterns. © 2009 Begell House, Inc.
4 citations
TL;DR: The 3-phenyl sydnone has proven to be a versatile precursor for the synthesis of various related derivatives and may be used further in preparing various pharmaceutical and agricultural compounds as mentioned in this paper.
Abstract: The synthetic versatility of 3-[p-(hydrazinocarbonyl)]phenylsydnone is demonstrated in the syntheses of various heterocyclic compounds. For example, pyrazoles, fused pyranopyrazoles, 1,3,4-thiadiazoles, 1,3,4-oxadiazoles and 1,2,4-triazoles can be built on the phenyl ring of this 3-phenyl sydnone. The phenylsydnones prepared herein were characterized spectroscopically and subjected to antibacterial and antifungal screening. The compounds demonstrated high fungicidal activities. 3-[p-(hydrazinocarbonyl)]phenylsydnone has proven to be a versatile precursor for the synthesis of various related derivatives and may be used further in preparing various pharmaceutical and agricultural compounds.
3 citations
01 Jan 2009
TL;DR: This paper describes a new local data uploading system called Information Uptriever, and implements the system for uploading actionable information pertaining to the domain of Indian higher education as a proof-of-concept.
Abstract: In the developing regions much of local information content is not available in form seasily indexable by web crawlers. In this paper we describe a new local data uploading system called Information Uptriever. The goal of Information Uptriever is to selectively upload local data relevant to a pre-defined set of decision-making situations. Rather than uploading normal (or all) information that does not necessarily result in an immediate action an Information Uptriever uploads actionable information that is likely to be most relevant in a decision-making situation and may lead to action. Using freely available resources on the web we implement the system for uploading actionable information pertaining to the domain of Indian higher education as a proof-of-concept. Our anecdotes suggest that uptrieving is very effective for uploading information relevant to a pre-defined set of actions. The live system is accessible at http://uptriever.googlepages.com
TL;DR: In this article, the dielectric measurements in benzene at room temperature on the pure samples of o-ethyl phenol, 2-nbutylphenol, 4-n-butyl phenol and 3,4-difluorophenol were carried out at a frequency of 9.98 GHz and also at 8.74 GHz.
Abstract: Two important molecular parameters, namely, the dielectric relaxation time τ and electric dipole moment are highly useful in having insight into the molecular structure, size, shape, apart from the inter- and intra-molecular forces, etc. With these in view dielectric measurements in benzene at room temperature on the pure samples of o-ethyl phenol, 2-n-butylphenol, 4-n-butylphenol, 2,6-dimethoxyphenol and 3,4-difluorophenol were carried out at a frequency of 9.98 GHz by employing concentration variation method. Similar measurements, on a single weight fraction of each of them at 9.98 GHz and also at 8.74 GHz are carried out. Measurements on a single weight fraction in benzene of each of the liquid crystal samples, namely, EPCP.car (Butyl-p-(p-ethoxy phenoxy corbonyl)-phenyl carbonate), PPPB (p-pentylphenyl-p-propyl benzonate), EPAP.Hp (p-(p-ethoxyphenyl azo) phenyl heptenate) and EPAP. Und (p-(p-ethoxyphenyl azo) phenyl undecylenate were also carried out at the said two frequencies. Using the obtained val...