Showing papers by "Bharathiar University published in 1992"
TL;DR: In this paper, the ability of waste banana pith to remove color from synthetic wastewaters containing acid violet, Congo red + Rhodamine B mixture and Congo red+ Acid Violet+ Rhodamine-B mixture was investigated.
171 citations
TL;DR: Profiles of amino acids revealed that the seed proteins contained relatively higher levels of all the essential amino acids except sulpho-amino acids in all the three germplasm of M. pruriens and threonine in the germplasms of Silent Valley and Lucknow when compared with the WHO requirement pattern.
87 citations
TL;DR: In this article, the ability of biogas waste slurry to adsorb a basic dye (Rhodamine-B) has been investigated and the rate constant was found to be 2.9 × 10−2 min−1 at 20 mg L−1 initial dye concentration.
Abstract: The ability of biogas waste slurry to adsorb a basic dye (Rhodamine-B) has been investigated. The parameters include agitation time, initial dye concentration, pH and adsorbent dosage. The rate controlling step is mainly intraparticle diffusion. The adsorption rate constant was found to be 2.9 × 10−2 min−1 at 20 mg L−1 initial dye concentration. The adsorption conforms with Freundlich isotherm. Removal of the dye was at least 90% in the entire pH range from 2.3 to 11.2. Desorption of the dye in 50% (v/v) acetic acid to the extent of 69.7% indicates that most of the dye is held by the adsorbent by chemisorption.
61 citations
TL;DR: The boiled seeds of Abrus precatorius L are eaten by the residents of the Andaman Islands in India and are rich in most of the essential amino acids, and they are deficient only in cystine and threonine, when compared to the WHO/FAO requirement pattern.
Abstract: The boiled seeds ofAbrus precatorius L. are eaten by the residents of the Andaman Islands in India. The seeds were analysed for proximate composition, total (true) protein, seed protein fractions, amino acid profile of seed proteins, minerals and certain antinutritional factors. The seed proteins are rich in most of the essential amino acids, and they are deficient only in cystine and threonine, when compared to the WHO/FAO requirement pattern. The antinutritional factors (total free phenols, tannins, trypsin inhibitor activity and haemagglutinating activity) were also investigated.
54 citations
TL;DR: In India, the seeds ofCanavalia gladiata andC.
Abstract: In India, the seeds ofCanavalia gladiata andC. ensiformis have traditionally been eaten by the aborigines, but they are less popular among the civilized people. The data on the chemical composition and nutritional quality of these seeds are not readily available. The proximate composition, mineral composition, the contents of total (true) proteins, seed protein fractions, profile of seed protein amino acids and certain antinutritional factors were analysed and reported in the present study. The seeds ofC. ensiformis contain more crude protein, crude lipid and minerals like Na, K, Ca, Mg, P, Fe and Mn than doesC. gladiata. Both albumins and globulins together constitute the major bulk of seed proteins. In both the species ofCanavalia investigated, glutamic acid, aspartic acid, isoleucine+leucine, tyrosine+phenylalanine and lysine are the major amino acids of seed proteins. The presence of certain antinutritional factors (total free phenols, tannins, lectins, L-DOPA, trypsin inhibitor activity) is also reported for both species ofCanavalia.
52 citations
TL;DR: The seeds were found to be a rich source of minerals compared to some of the most common Indian pulses and the essential amino acids valine, leucine, tyrosine, phenylalanine and lysine lower than recommended in the WHO/FAO requirement pattern.
Abstract: The proximate composition, seed protein fractions, amino acid profiles, fatty acids, minerals and anti-nutritional factors of Vigna trilobata were analysed. The crude protein content was 20.31%, crude fat 5.54%, crude fibre 8.81% and ash 2.71%. The seeds were found to be a rich source of minerals such as Mg, Fe, Cu, Zn and Mn compared to some of the most common Indian pulses. In the seed proteins the essential amino acids valine, leucine, tyrosine, phenylalanine and lysine were somewhat higher, but threonine, isoleucine and the sulphur-containing amino acids lower than recommended in the WHO/FAO requirement pattern. The seed lipids contained a large proportion of unsaturated fatty acids. The total free phenols, tannins, L-DOPA (3,4-dihydroxyphenylalanine) and haemagglutinating activity were also analysed or assayed.
42 citations
TL;DR: The study found that the level of copper increased with increasing age in nuclear brunescence and mixed cataractous lens and a low amount of copper was observed in the posterior subcapsular cataractsous lens with increasingAge.
Abstract: The study was undertaken to determine the copper content in different human cataractous lenses. The level of copper increased with increasing age in nuclear brunescence and mixed cataractous lens and a low amount of copper was observed in the posterior subcapsular cataractous lens with increasing age. Cataractous lenses of females have greater amounts of copper compared with males.
30 citations
TL;DR: Longevity and fecundity are high, while developmental time is short when insect feed on preferred young leaves when insect larvae on senescent leaves are considered.
29 citations
TL;DR: The Tamilnadu germplasms seems to be a rich source of sodium, magnesium, zinc, manganese, copper and iron; whereas the Kerala germplasm seems toBe a rich sources of phosphorus.
Abstract: Two germplasms of the tribal pulse,Mucuna monosperma Dc. ex Wight, viz., [1] Thirunelly Reserve Forest, Wynaad District (Kerala) and [2] Siruvani Reserve Forest, Coimbatore District (Tamilnadu), were analysed for proximate composition, total (true) seed proteins, seed protein fractionation, amino acid composition, fatty acids, minerals and antinutritional factors. Crude proteins, crude lipids, ash and nitrogen free extractives constituted 23.10%, 4.36%, 3.80%, 61.74%, respectively, in Tamilnadu germplasm; whereas, in Kerala germplasm they constituted 20.13%, 8.99%, 3.60% and 61.69%, respectively. The calorific values of 100 g dry matter of seed material are 408.19 KCal (Kerala) and 378.60 KCal (Tamilnadu) germplasms. Essential amino acids like methionine, cystine, threonine and valine were found to be limiting in the seed proteins of both the germplasms. The fatty acids like lauric acid and palmitic acid are found to be common in both the germplasm seed samples, while linoleic and oleic acids in Kerala germplasm and stearic acid in Tamilnadu germplasm are present. The Tamilnadu germplasm seems to be a rich source of sodium, magnesium, zinc, manganese, copper and iron; whereas the Kerala germplasm seems to be a rich source of phosphorus. Antinutritional substances like total free phenols, tannins, L-DOPA, trypsin inhibitor activity and phytohaemagglutinating activity also were investigated.
27 citations
TL;DR: The single-term Walsh series (STWS) technique is used to study the optimal control of linear singular systems with quadratic cost and can be easily implemented on a digital computer.
Abstract: In this paper the single-term Walsh series (STWS) technique is used to study the optimal control of linear singular systems with quadratic cost. This method can be easily implemented on a digital computer. The method is verified by an illustrative example.
23 citations
TL;DR: The effect of gamma rays, EMS, sodium azide and their combination on various cytological parameters in M2 generation were studied in lentil variety PL-639 and pollen sterility could be used as a parameter for selection plants having more number of quadrivalents.
Abstract: The effect of gamma rays, EMS, sodium azide and their combination on various cytological parameters in M2 generation were studied in lentil variety PL-639. The mean values of quadrivalents, rod bivalents, univalents, fragments/bridges, cytological abnormal cells and pollen sterility were increased in mutagenic treated population, while the chiasma frequency was decreased. Combined treatments showed additive effect, EMS produced slightly more abnormalities over sodium azide. Pollen sterility could be used as a parameter for selection plants having more number of quadrivalents.
TL;DR: This paper presents procedures and tables for the selection of minimum sample size multiple deferred (dependent) state sampling plan of type MDS and MDS - 1 for various entry conditions such as AQL, LQL, (AQL, AOQL) etc.
Abstract: This paper presents procedures and tables for the selection of minimum sample size multiple deferred (dependent) state sampling plan of type MDS and MDS - 1 for various entry conditions such as (AQL, LQL), (AQL, AOQL) etc.
TL;DR: In this paper, mixed ligand complexes of ruthenium(III) with β-diketones, halide and triphenylphosphine ortriphenylarsine as ligands have been synthesized.
Abstract: Mixed ligand complexes of ruthenium(III) with β-diketones, halide and triphenylphosphine or triphenylarsine as ligands have been synthesised. The complexes were assigned the formula [RuX2(DIKET) (EPh3)2] (X = CI, Br; E = P, As; DIKET=diketonate) on the basis of analytical and spectral (IR, electronic and EPR) data. An octahedral structure has been proposed for all these complexes.
TL;DR: In this paper, the efficiency of Fe3+/Cr3+ sludge, a waste material from the wastewater treatment in the fertilizer industry, is compared with the conventional flocculants, ferric chloride and ferrous sulphate, in the treatment of dairy wastewater.
TL;DR: In this paper, the authors analysed Alysicarpus rugosus (Willd.) DC seeds for proximate composition, seed protein fractions, amino acid composition, fatty acid profiles, minerals and antinutritional factors.
TL;DR: In this article, a table is presented for the construction and selection of tightened-normal-tightened sampling scheme of type TNT-(n1, n2;c) for single and double sampling.
Abstract: A table is presented for the construction and selection of tightened-normal-tightened sampling scheme of type TNT-(n1, n2;c). Efficiency of TNT-(n1, n2;c) scheme over conventional single and double sampling plans is discussed.
TL;DR: In this article, the authors measured the thickness of the germanium film (Ge) by multiple beam interferometer technique (MBI) and determined the spreading factor, β, and relaxation time, τa.
Abstract: Al-G e-A l (MSM) capacitors are formed by vaccum evaporation under a vacuum of 2.66 × 10−3 Pa. The thicknesses of the films (Ge) are measured by multiple beam interferometer technique (MBI). From X-r ay diffraction studies, the structure of the germanium film (d = 47 nm) is found to be amorphous in nature. Aging, annealing, dielectric, and ac conduction studies are made for these films. The dielectric constant for a film of thickness 47.5 nm at 1 kHz and at room temperature is calculated to 16.5 and its value was found to increase gradually with the thickness of the films. AC conduction studies reveale that the conduction machanism is due to hopping of electrons. The activation energies are calculated from the relaxation process and using the plot of log conductance versus the inverse absolute temperature. Cole-C ole diagrams are drawn and from these diagrams the spreading factor, β, and relaxation time, τa, are determined.
In einem Vakuum von 2,66 × 10−3 Pa werden Al-G e-A l (MSM)-Kondensatoren aufgebracht. Die Dicke der Schichten (Ge) wird mittels Mehrstrahlinterferrometrie (MBI) gemessen. Aus Rontgenbeugungsuntersuchungen wird gefunden, das die Struktur der Germaniumschicht (d = 247 nm) amorph ist. Alterungs-, Temperungs-, dielektrische und Wechselstromleitfahigkeitsuntersuchungen werden an diesen Schichten durchgefuhrt. Die Dielektrizitatskonstante fur eine Schicht der Dicke 47,5 nm wird bei 1 kHz und Zimmertemperatur zu 16,5 berechnet und es wird gefunden, das der Wart graduell mit der Dicke der Schichten ansteigt. Wechselstromleitfahigkeitsuntersuchungen ergeben, das der Leitungsmechanismus durch Elektronenhopping bestimmt wird. Aus dem Relaxationsprozes und unter Benutzung der Auftragung des log Leitfahigkeit uber der inversen absoluten Temperatur werden die Aktivierungsenergien berechnet. Cole-C ole-D iagramme werden aufgezeichnet und aus dienen Diagrammen der Ausbreitungsfaktor β, und die Relaxationszeit τa, bestimmt.
TL;DR: In this article, the authors measured the dielectric properties of LiNbO3-Schichten with the Tolansky technique and confirmed that the mechanism responsible for the conduction process in these films is electronic hopping.
Abstract: Thin films of LiNbO3 are prepared by thermal evaporation onto well cleaned glass substrates at 2.66 x 10−3 Pa. The thicknesses of the dielectric films are measured by Tolansky technique (Fizeau fringes). The X-ray diffractogram shows that the as deposited films are amorphous in nature. Aging and annealing effects are found to improve the dielectric properties. The capacitance and dielectric loss are measured from 303 to 463 K in the frequency range 1 to 30 kHz. The dielectric constant of a film of 80 nm thickness is found to be 8.01 at room temperature in the frequency range studied. From the ac conduction studies it is confirmed that the mechanism responsible for the conduction process in these films is electronic hopping. The intrinsic temperature coefficient of capacitance is estimated to 1500 ppm/K. Two activation energies are observed for the thermally activated process and the results are discussed.
Mittels thermischer Verdampfung werden bei 2,66 x 10−3 Pa dunne LiNbO3-Schichten auf gut gerenigte Glassubstrate aufgebracht. Die Dicke der dielektrischen Schichten wird mit der Tolansky-technik (Fizeau-Streifen) gemessen. Rontgenbeugungsdiagramme zeigen, das die ursprunglich auf-gebrachten Schichten amorph sind. Es wird gefunden, das Alterung und Temperung die dielektrischen Eigenschaften verbessern. Die Kapazitanz und die dielektrischen Verluste werden im Frequenzbereich von 1 bis 30 kHz zwischen 303 bis 463 K gemessen. Die Dielektrizitatskonstante einer 80 nm dicken Schicht wird im untersuchten Frequenzbereich zu 8,01 bei Zimmetemperatur bestimmt. Untersuchungen der Wechselstromleitfahigkeit bestatigen, das der fur den Leitungsprozes verantwortliche Mechanismus Elektronenhopping ist. Der intrinsische Temperaturkoeffizient der Kapazitanz wird zu 1500 ppm/K bestimmt. Fur den thermisch aktivierten Prozes werden zwei Aktivierungsenergien beobachtet und die Ergebnisse werden diskutiert.
TL;DR: The operating characteristic curves of certain known sigma variables sampling plans may not be satisfactory in that they have a tendency to reject even lots of acceptable quality as discussed by the authors, and a method to identify such sigma variable plans possessing unsatisfactory operating characteristic curve is presented in this paper.
Abstract: The operating characteristic curves of certain known sigma variables sampling plans may not be satisfactory in that they have a tendency to reject even lots of acceptable quality. This note presents the theory and a method to identify such known sigma variables plans possessing unsatisfactory operating characteristic curves.
01 May 1992
TL;DR: In this paper, it was shown that the single-term Walsh series technique is not applicable to singular systems of index three, and that linear time-varying singular systems in discrete time are not applicable.
Abstract: By considering linear time-varying singular systems in discrete time it is shown that the single-term Walsh series technique is not applicable to singular systems of index three.
TL;DR: In this article, the formation of the Z center during irradiation is confirmed by both thermoluminescence and optical absorption studies, and the origin of emission bands in pure and doped CsBr and CsCl is discussed.
TL;DR: In this paper, tables and procedures for finding the double sampling plans, conditional double sampling plan, link sampling plan and chain sampling plans involving minimum sum of producer's and consumer's risks for specified Acceptable Quality Level and Limiting Quality Level are given.
Abstract: Tables and procedures are given for finding the double sampling plan, conditional double sampling plan, link sampling plan, ChSP-4 and ChSP-4A chain sampling plans involving minimum sum of producer's and consumer's risks for specified Acceptable Quality Level and Limiting Quality Level
TL;DR: In this paper, the controllability of nonlinear neutral Volterra integrodifferential systems and infinite delay neutral Vectors has been investigated, by suitably adapting the technique of Dauer [5].
Abstract: Sufficent conditions for controllability of nonlinear neutral Volterra integrodiffer-ential systems are established. Controllability of an infinite-delay neutral Volterrasystem is also considered. 1. Introduction Several authors [4, 6, 8, 12] have studied the theory of functional differ-ential equations. In [2, 9] the problem of controllability of linear neutralsystems has been investigated. Motivation for such control systems and itsimportance in other fields can be found in [8, 10]. Chukwu [3] and Angell[1] studied the functional controllability and Underwood and Chukwu [13],null controllability of nonlinear neutral systems. Onwuatu [11] discussedthe problem for nonlinear systems of neutral functional differential equa-tions with limited controls. Gahl [7] derived a set of sufficient conditions forcontrollability of nonlinear neutral systems through the fixed point methoddeveloped by Dauer [5]. In this paper, we shall study the controllability ofneutral Volterra integrodifferential system and infinite delay neutral Volterrasystems, by suitably adapting the technique of Dauer [5].
01 Oct 1992-Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering
TL;DR: In this paper, anionic polymer RF‐440 in combination with Fe3+/Cr3+ hydroxide sludge gave a maximum removal of turbidity (71%), COD (50%), Chloride (20%), Potassium (48%), Calcium (42%), and BOD (40%).
Abstract: Combination of the waste Fe3+ /Cr3+ hydroxide sludge and polymer flocculant used in the treatment of distillery wastewater yielded good results. Fe3+/Cr3+ hydroxide sludge and polymer flocculants were not effective, when used separately. Various parameters like turbidity, colour, COD, Chloride, Potassium, Sodium, Calcium and BOD. Among various polymer flocculants used, anionic polymer RF‐440 in combination with Fe3+/Cr3+ hydroxide sludge gave a maximum removal of turbidity (71%), COD (50%), Chloride (20%), Potassium (48%), Calcium (42%) and BOD (40%).
TL;DR: In this paper, sufficient conditions for the global controllability of nonlinear Volterra integrodifferential systems with prescribed controls are derived by transforming the control system into a boundary value problem and then the result is obtained by the application of the Schaefer fixed point theorem.
Abstract: Sufficient conditions for the global controllability of nonlinear Volterra integrodifferential systems with prescribed controls are derived. The method is a transformation of the given control system into a boundary value problem and then the result is obtained by the application of the Schaefer fixed point theorem.
TL;DR: In this article, the conduction properties of aluminum-neodymium oxide-aluminium thin film capacitors have been studied and the trap density has been found to be of the order of 1026 m−3.
Abstract: Aluminium-neodymium oxide-aluminium thin film capacitors have been prepared by thermal evaporation and the d.c. conduction properties of these films have been studied. The thicknesses of the films have been determined by a multiple beam interferometer. The current-voltage power-law dependence showed that the conduction in these films is space-charge limited. The linear dependence of the current density on the square root of the applied field confirmed the exponential trap distribution. The trap density has been found to be of the order of 1026 m−3. It has also been observed that the Schottky type of conduction is predominant in the high-field region and the height of the Schottky barrier has been determined. It is seen that the conduction mechanism is an activated process with the activation energy decreasing with increasing field.
TL;DR: The peripheral lymphocytes of 11 male and seven female workers occupationally exposed to textile dyes were studied for cytogenetic change and a significant increase in the frequency of chromosomal aberrations and sister chromatid exchanges was recorded.
Abstract: The peripheral lymphocytes of 11 male and seven female workers occupationally exposed to textile dyes were studied for cytogenetic change. A significant increase in the frequency of chromosomal aberrations and sister chromatid exchanges were recorded regardless of the duration of the workers' exposure to the dyes.
TL;DR: In this article, a table and a procedure are given to find the tightened-normal-tightened system involving the minimum sum of producer's and consumer's risks for a specified acceptable quality level and limiting quality level.
Abstract: A table and a procedure are given to find the tightened-normal-tightened system involving the minimum sum of producer's and consumer's risks for a specified acceptable quality level and limiting quality level.
TL;DR: In this article, the properties of three sampling inspection plans with identical operating characteristic curves are discussed, relative merits and demerits are studied and an eficient plan is identi-fied.
Abstract: The properties of three sampling inspection plans with identical operating characteristic curves are discussed. Relative merits and demerits are studied and an eficient plan is identiJied. Tables yielding parametric values for designing plans for various entry parameters are provided.