Showing papers by "Aligarh Muslim University published in 1983"
TL;DR: In this article, the effect of lead and cadmium on the dry matter yield and nutrient concentration of tomato (Lycopersicum esculentum) and egg-plant (Solanum melongena) was studied in a greenhouse experiment.
Abstract: The effect of lead and cadmium on the dry matter yield and nutrient concentration of tomato (Lycopersicum esculentum) and egg-plant (Solanum melongena) was studied in a greenhouse experiment. The results showed some benificial effects of Pb and Cd at their lower doses and toxicity at higher levels. The threshold concentration (C10), toxicity index (T10) and loading rate to produce C10 were also calculated. These values suggested the tomato to be more tolerant than egg-plant for heavy metals whose toxicity was found in the order of Cd>Pb in both the plants. The application of the heavy metals was found to effect the nutrient concentration and their uptake by plants. The results have been explained on the basis of their complexation and translocation through the plant sap.
109 citations
TL;DR: A key is given to the world genera of the chalcidoid family Aphelinidae, including three described as new, Encarsiella, Hirtaphelinus and Samariola, and the following genera are regarded as of doubtful position.
Abstract: A key is given to the world genera of the chalcidoid family Aphelinidae. Forty-four genera are accepted as valid, including three described as new, Encarsiella (type-species E.noyesi sp.n.), Hirtaphelinus (type-species H.smetanai sp.n.) and Samariola (type-species S.camerounensis sp.n.). The key is followed by a synopsis of the world genera, which includes: (1) citations of valid genera and their synonyms in chronological order; (2) total or approximate number of described species; (3) distribution in the six zoogeographical regions; (4) references mainly to major works and revisions; and (5) comments, especially on the new synonymies introduced in the present paper. The following new synonymies are proposed (the senior synonyms (valid names) are noted in parentheses): Aleurodiphilus DeBach & Rose (Encarsia Foerster); Aneristus Howard, Ataneostigma Girault, Heptacritus De Santis (Coccophagus Westwood); Artas Howard (Pteroptrix Westwood); Plastocharella Girault, Turmidiscapus Girault (Centrodora Foerster); Encyrtophyscus Blanchard, Physculus Jasnosh, Physcus Howard (Coccobius Ratzeburg); Mesidia Foerster (Aphelinus Dalman); Paranthemus Girault (Cales Howard); Primaprospaltella DeBach & LaSalle (Coccophagoides Girault). The following genera are regarded as of doubtful position: Mesopirene Girault, Neocales Risbec, Paulianaphelinus Risbec and Verekia Risbec.
96 citations
01 Dec 1983
TL;DR: In this paper, it is shown that there is no loss of accuracy in the higher order perturbations, as claimed by Kuiken, and a comparison of the results of Euler transformation with those of Kuiken (based on direct and inverse series) show the agreement to four places of decimal for all values of steamwise distances.
Abstract: This note deals with the comments of Kuiken that appeared in the journal disputing the accuracy of the solutions of an earlier work on the cooling of a low heat resistance stretching sheet moving through a fluid It is shown that there is no loss of accuracy in the higher order perturbations, as claimed by Kuiken Further, a comparison of the results of Euler transformation with those of Kuiken (based on direct and inverse series) show the agreement to four places of decimal for all values of steamwise distances The results for heat transfer not considered in earlier papers are also presented here
71 citations
TL;DR: In this paper, a general result for obtaining recurrence relations between single moments of order statistics is obtained and has been used to establish the recurrence relation between moments of some doubly truncated distributions.
Abstract: A general result for obtaining recurrence relations between single moments of order statistics is obtained and has been used to establish the recurrence relations between moments of some doubly truncated distributions. The examples considered are Weibull, exponential, Pareto, power function, Cauchy, and logistic. Recurrence relations are also obtained for nontruncated gamma and beta distributions.
66 citations
TL;DR: In this paper, the physico-chemical properties of effluents of Kisan Sahkari Chini Mills Limited Satha, Aligarh (UP) India (KSCML) and Panniji Sugar and General Mills, Bulandshahr, India (PSGM), and the effects of PSGM effluent on soil and crop plants were evaluated.
40 citations
TL;DR: In this article, the properties of a finite-range failure-time distribution, that includes the exponential as a particular case, have been studied and the distribution is IFR when the shape parameter exceeds unity, but is IFRA always.
Abstract: Properties of a finite-range failure-time distribution, that includes the exponential as a particular case, have been studied. The distribution is IFR when the shape parameter exceeds unity, but is IFRA always. For a given value of the shape parameter, the distribution is NBUE over a segment of its range. Estimators of parameters have been derived. Distributions of two-component series, parallel, and standby system lives have also been worked out.
37 citations
TL;DR: Petroleum ether extracts of seeds at 10–1% concentration were tested for insecticidal activity against stored grain insects, Tribolium castaneum Herbst.
Abstract: Petroleum ether extracts of seeds at 10–1% concentration were tested for insecticidal activity against stored grain insects,Tribolium castaneum Herbst, in the laboratory About 50 oils were tested, of which ten showed repellent, antifeedant property up to 1% concen-tration
30 citations
TL;DR: In this article, the authors define two non-dimensional parameters Λ = τ w p x δ and R p = U p δ ν where τ w is the wall stress, p x (⪢0) is the pressure gradient to which the turbulent boundary layer (of thickness δ) is subjected, ν is the kinematic viscosity, U p = ( νp x p ) 1 3 is a characteristic velocity and p is the density.
27 citations
TL;DR: In this paper, a general result for obtaining recurrence relations between product moments of order statistics is established and this result is used to determine the recurrence relation between product moment of some doubly truncated distributions, including Weibull, exponential, Pareto, power function and Cauchy distributions.
26 citations
24 citations
TL;DR: The sensitivity of the assay increased by as much as 16-fold when fluorogenic substrate was used instead of conventional PNP-P and could therefore be employed for the detection of low avidity antibodies.
TL;DR: In this paper, a new piperidine alkaloid and 2.4-dimethoxy-3-ψ,ψ-dimethylallyl- trans -cinnamoylpiperidide assigned to the alkaloids was confirmed through synthesis.
TL;DR: A new crystalline inorganic ion-exchanger, Zr(IV) arsenosilicate, has been synthesized and shows high chemical and thermal stability as mentioned in this paper, which is also stable under γ-radiations of moderately high strength.
Abstract: A new crystalline inorganic ion-exchanger, Zr(IV) arsenosilicate, has been synthesized and shows high chemical and thermal stability. It is also stable under γ-radiations of moderately high strength. The utility of this material has been demonstrated by achieving quantitative separation of Hg(II) from such other metal ions as Cd(II), Pb(II), Ni(II), Co(II), Zn(II), Al(III), and Fe(III) on its columns. Some silicate rocks have also been analyzed using this material.
01 Dec 1983
TL;DR: In this article, the formation and characterization of water in oil (W/O) microemulsion systems composed of ionic surfactants-water-benzene-n-alcohols (C4 − C8).
Abstract: The present article presents data on the formation and characterization of water in oil (W/O) microemulsion systems composed of ionic surfactants-water-benzene-n-alcohols (C4 – C8). The influence of the alcohol chain length and surfactant concentration, on the formation of microemulsion systems, has been investigated. When the amount of benzene or water was increased, the microemulsion system's appearance changed from clear to bluish to turbid. The transitions were identified on the basis of both visual appearance and specific resistance measurements. A dramatic change in the specific resistance was observed for the transitions. This was rationalized by assuming a change in the water structure from spherical to cylindrical to lamellae type. The critical nwater/noil ratio (Vc), for stable microemulsion system was calculated with the help of viscosity measurements.
Journal Article•
TL;DR: In this article, the pre-Siwalik Tertiary rocks of southern Himachal Pradesh are grouped into five distinct lithofacies, which collectively represent a consanguineous association of sediments deposited in related geomorphic environments.
Abstract: The Subathu, Dagshai and Kasauli rocks of Himachal sub Himalaya have been classically interpreted as of marine brackish or lagoonal origin. In this study, the pre-Siwalik Tertiary rocks of southern Himachal Pradesh are grouped into five distinct lithofacies, which collectively represent a consanguineous association of sediments deposited in related geomorphic environments: 1. Fossiliferous green shale, locally red, with lenses of limestone interpreted as tidally influenced shelf deposits; 2. Clean white sandstone interpreted as coastal barrier bars; 3. Red mudstone locally green, and lenses of grey sandstone with channel lag interpreted as lagoonal and tidal flat deposits; 4. Grey sandstone with channel lag and red mudstone and siltstone inferred to have accumulated in distributary channel and inter-distributary plains of fluvio-delta complex; 5. Grey, white sandstone and mudstone interpreted as a mixed assemblage of fluvio-delta and coastal barrier facies. Two systems of currents operated during the deposition of these rocks: one, across the delta plain complex was directed towards south and southwest following the prevailing regional paleoslope; and the other representing longshore currents in adjacent coastal areas operating parallel to shoreline, was directed towards west-northwest.
TL;DR: In this paper, the photon-photon delayed coincidence technique has been used to measure the 6 3 P 1, 7 3 S 1, and 7 1 S 0 level lifetimes in mercury atoms.
Abstract: The photon-photon delayed coincidence technique has been used to measure the 6 3 P 1 , 7 3 S 1 , and 7 1 S 0 level lifetimes in mercury atoms. The measured mean lifetimes are 6 3 P 1 (116±5) ns, 7 3 S 1 (7.7±0.4) ns and 7 1 S 0 (30.5±4.3) ns, respectively.
TL;DR: A new furocoumarin wampetin has been isolated from Clausena wampi (syn. Clausena lansium) as mentioned in this paper, which was established from 1 H NMR, 13 C NMR and MS and chemical data.
TL;DR: In this article, a monofunctional weak cation exchanger of tin(IV)-iodophosphate is used for detailed study owing to its highest ion exchange capacity and highest chemical stability.
Abstract: Iodates and iodophosphates of tin(IV), zirconium(IV) and iron(III) have been synthesized under varying conditions and studied their ion exchange behaviour. Among the various ion exchangers synthesized, tin(IV)-iodophosphate is chosen for detailed study owing to its highest ion exchange capacity and highest chemical stability. The most stable sample is prepared by mixing 0.1M stannic chloride, 0.1M potassium iodate and 0.1M potassium dihydrogen orthophosphate solutions in the volume ratio 1:1:2 respectively at pH 0–1. It is a monofunctional weak cation exchanger. Its ion exchange capacity for K+ is 1.6 meq/dry g. The thermal and chemical stabilities of this material have been determined and compared with Zr(IV)-phosphoiodate. Effect of heating on the properties of tin(IV)-iodophosphate has been determined. To explore the separation potential of tin(IV)-iodophosphate Kd values of different metal ions have been determined in organic solvents. A number of important separations of metal ions of indust...
TL;DR: The periodicity of cambium and the formation of xylem and phloem have been studied in Mimusops elengi L., for three consecutive calendar years and it has been found that following the thinning of the crown in April, new leaves emerge in May and this is followed by the initiation of c Cambial activity in June, after a lapse of 4 weeks from the time of leaf emergence.
TL;DR: In this article, the electrical conductivities and i.r.d. spectral data indicate a considerable extent of cation-anion interaction and the anion is bonded in a tridentate manner such that it has a reduced Cs symmetry in the molecule.
Abstract: Chlorosulphates of the divalent transition metals Mn(II), Co(II), Ni(II) and CU(II) have been prepared and characterized. The electrical conductivities and i.r. spectral data indicate a considerable extent of cation-anion interaction and the anion is bonded in a tridentate manner such that it has a reduced Cs symmetry in the molecule. The magnetic susceptibility measurements and the ligand field spectroscopic studies are consistent with the octahedral geometry for these salts and indicate the presence of some covalent bonding between the chlorosulphate ion and the metal ion. However, a tetragonal distortion in the geometry has been indicated for the Ni(II) salt. The coordination compounds of the type ML4(SO3Cl)2[L=acetonitrile, pyridine, pyridine N-oxide] and ML2(SO3Cl)2 [L = 2,2′bipyridine, acridine] have also been prepared and characterized. The i.r. and ligand field spectroscopic studies and magnetic susceptibility measurements indicate the presence of a strong interaction between the anion an...
TL;DR: Toxic metals like lead, bismuth, mercury and zinc-aranyl have been found to repress the carbonaceous oxygen demand of amino acid, methionine, used as substrate as mentioned in this paper.
TL;DR: In this paper, the authors applied first-order embedded Markov chain statistics to subsurface data of Karharbari and Barakar coal measures of Giridih and Saharjuri basins of Bihar, India.
TL;DR: In this paper, the authors present a mathematical model to determine transitional as well as steady state probabilities of various system states in a conveyor-paced assembly line system with the line-conveyor subject to failure and repair.
Abstract: This paper presents a mathematical model to determine transitional as well as steady state probabilities of various system states in a conveyor-paced assembly line system with the line-conveyor subject to failure and repair. The analysis helps to predict the effect of system parameters on labour efficiency, output rate, and system down time. The on-line service time distribution has been taken as general for wider applicability. An optimization problem for a business concern is then formulated taking into account all the relevant economic implications, and solved for a numercial example by STJMT. The profit function is seen to be a concave function with the cost structure as presented here. The results of the numerical example give convincing evidence that, when the problem is seen in totality, neither worker utilization nor output remain the criteria for optimization.
TL;DR: A hitherto unknown hydroxy acid has been isolated from Blepharis sindica seed oil has been characterized as 9-hydroxydodecanoic acid by IR, NMR and mass spectral studies as discussed by the authors.
TL;DR: The spot-test for m-dinitroaromatics and their derivatives, based on the Janovsky reaction, is re-investigated and the sensitivity has been much enhanced by changing the solvent and using the novel "pellet" spot- test.
TL;DR: In this paper, the mixed convection in an axisymmetric point heat source due to a vertical free stream is analyzed using the boundary layer equations, and the two solutions where the buoyancy effects are favourable and adverse with respect to the oncoming stream are studied.
TL;DR: In this article, the separation potential of TBP impregnated silica gel-G for 48 metal ions has been explored in a number of solvent systems and some important binary and ternary separations were achieved.
Abstract: The separation potential of TBP impregnated silica gel-G for 48 metal ions has been explored in a number of solvent systems. The effect of the degree of impregnation of TBP has been studied and some important binary and ternary separations were achieved.
TL;DR: In this paper, electron paramagnetic resonance of Cu 2+ ion in HCOO 2 ·2H 2 O were measured at room temperature and the spectrum was interpreted in terms of Jahn-Teller effect.
Abstract: Electron paramagnetic resonance of Cu 2+ ion in Sr(HCOO) 2 ·2H 2 O were measured at room temperature. The spectrum was interpreted in terms of Jahn-Teller effect. Cu 2+ is found to be incorporated both interstitially and substitutionally. The substitutional Cu 2+ is found to be in nearly cubic environment and \(\varGamma_{5}\) distortion is responsible for Jahn-Teller effect. The interstitial Cu 2+ finds itself in octahedral field which undergoes Jahn-Teller splitting due to \(\varGamma_{3}\) coupling.
TL;DR: In this article, des intensites des raies de C and d'autres raies of recombinaison anormales de NGC 2024, Orion A et W3.
Abstract: Etude detaillee des intensites des raies de C et d'autres raies de recombinaison anormales de NGC 2024, Orion A et W3. On a calcule les densites electroniques et les temperatures a partir des equilibres thermique, chimique et d'ionisation a l'aide d'une methode auto-compatible. La meilleure valeur des intensites observees des raies de recombinaison dans le spectre 0,6-15 GHz est utilisee pour calculer les parametres physiques de chaque nuage dans les hypotheses d'abondances solaires et d'abondances deficientes