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  • 1
    Electronic Resource
    Electronic Resource
    Relation between soybean nodulation byBradyrhizobium japonicum and intensity of infestation with the spider miteTetranychus cucurbitacearum (Saved) under different sowing dates and increasing amounts of nitrogenous fertilizer (1991)
    Springer
    World journal of microbiology and biotechnology 7 (1991), S. 37-42 
    Details
    ISSN: 1573-0972
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Inoculation of soybeans withBradyrhizobium japonicum and also the time of sowing of soybeans were studied under N-fertilization with urea at 0, 96 and 192 kg N/ha. Intensity of infestation with the spider miteTetranychus cucurbitacearum (Saved) was followed over six weeks. Inoculation greatly enhanced nodule numbers and weight, dry weight and N content of 65-day-old plant, seed yield, seed N content, 100-seed weight and efficiency of use of N from urea. Counts of the spider mite were increased by inoculation and N fertilization but decreased sharply under late plantation. Fertilizer N proportionally decreased nodulation, N2-fixation and productivity of chemical fertilizer. A late sowing date gave the least seed production but the maximum percentage increase in seed yield if inoculated. This indicated a lower efficiency of chemical fertilizer N utilization and the necessity for inoculation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02310917
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  • 2
    Electronic Resource
    Electronic Resource
    Urea dewaxing of middle fractions of Morgan (UAR) petroleum (1972)
    Springer
    Chemistry and technology of fuels and oils 8 (1972), S. 663-667 
    Details
    ISSN: 1573-8310
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00717966
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of trace elements in Egyptian molasses by instrumental neutron activation analysis (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 129 (1989), S. 453-457 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Multielement neutron activation analysis has been applied to the determination of macro, micro and trace amounts of Al, Br, Ca, Cl, Co, Cr, Cs, Fe, K, La, Mg, Mn, Na, Rb, Sc and V in molasses of Kom Ombo, Edfu, Armant, Naga Hammady and Abu Korkass cane sugar factories. The threshold element concentrations are acceptable and below the safety. Differences in element concentrations may be related to different botanic textures and structures, different compositions of sugar cane plants, corrosion of containers or changes in soil as a result of geochemical differentiation. The method is sensitive down to 0.038 ppm of V. The relative errors due to counting statistics are in the range of 0.2–11%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02039842
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  • 4
    Electronic Resource
    Electronic Resource
    Biochemical effects of some insecticides on the metabolic enzymes regulating glutathione metabolism (1994)
    Springer
    Bulletin of environmental contamination and toxicology 52 (1994), S. 505-510 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194136
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  • 5
    Electronic Resource
    Electronic Resource
    Detection and Quanification of Trihalomethanes in Drinking Water from Alexandria, Egypt (1996)
    Springer
    Bulletin of environmental contamination and toxicology 56 (1996), S. 397 -404 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900057
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  • 6
    Electronic Resource
    Electronic Resource
    A novel synthesis of heterocycles from thiocarbohydrazides (1997)
    Springer
    Monatshefte für Chemie 128 (1997), S. 61-70 
    Details
    ISSN: 1434-4475
    Keywords: Thiocarbohydrazides ; π-Acceptors ; Heterocyclic compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Reaktion der Thiocarbohydrazide1a und der Thiocarbazone1b mit Tetracyanoethylen (TCNE) ergab die Thiazol-, Thiadiazol-, Thiazin- und Thiadiazepinderivate4–7. 2-Dicyanomethylenindan-1,3-dion (CNIND) liefert mit1a,b Aminoindenopyrazolopyridazinon (12) und Phenyl-1,2,3,4-tetraazacyclopentafluoren (13). Die Indazol- und Oxathiadiazolderivate17 und19 wurden durch Reaktion von1b mit 1,3-Dichlor-5,6-dicyano-1,4-benzochinon (DDQ) gebildet. 6,7-Dichlor-5-phenylpyrazolophthalazinol (21) wurde aus1b und 2,3,5,6-Tetrachlor-1,4-benzochinon (CHL-p) erhalten. Die oxidative Cyclisierung der Thiodicarbazone2a–d mit den obengenannten Akzeptoren ergab die Thiadiazol- und Thiadiazinderivate8 und10.
    Notes: Summary The reaction of thiocarbohydrazides1a and thiocarbazones1b with tetracyanoethylene (TCNE) afforded the thiazol, thiadiazole, thiazine, and thiadiazepine derivatives4–7. 2-Dicyanomethyleneindane-1,3-dione (CNIND) reacted with1a,b to give aminoindenopyrazolopyridazinone (12) and phenyl-1,2,3,4-tetraazacyclopentafluorene (13). The indazole and oxathiadiazole derivatives17 and19 were formed during the reaction of1b with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDO). 6,7-Dichloro-5-phenylpyrazolophthalazinol (21) was obtained from the reaction of1b with 2,3,5,6-tetrachloro-1,4-benzoquinone (CHL-p). The oxidative cyclization of thiodicarbazones2a–d with the above acceptors afforded the thiadiazole and thiadiazine derivatives8 and10.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807639
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  • 7
    Electronic Resource
    Electronic Resource
    Changes of some serum parameters and amino acids content in rats after chronic sublethal doses of dimethoate (1994)
    Springer
    Archives of environmental contamination and toxicology 27 (1994), S. 256-259 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract An intraperitoneal repeated dose of dimethoate (O,O-dimethyl S-[N-methylcarbamoyl methyl] phosphorodithioate) was injected to male Wistar rats for 8 successive days. Body weight and liver weight decreased significantly while liver/body weight ratio and mg protein/g liver remained unchanged. Twenty serum amino acids were assayed in blood samples collected from hepatic vein, portal vein, and aorta. Most of the measured amino acids showed a tendency of decrease compared to control. The decrease was significant only for taurine, serine, threonine, methionine, tyrosine, histidine, and arginine but not for the rest of the amino acids measured. Glucose, 3-hydroxybutyrate, urea, ammonia, and lactate were measured in the same serum samples. These serum parameters showed a tendency of decrease (except urea) of them from control but the decrease was not significant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00214271
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  • 8
    Electronic Resource
    Electronic Resource
    Chemical interactions between 2-mercaptobenzazoles and π-acceptors (1995)
    Springer
    Monatshefte für Chemie 126 (1995), S. 653-662 
    Details
    ISSN: 1434-4475
    Keywords: 2-Mercaptobenzazoles ; Molecular interactions ; π-Acceptors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die 2-Mercaptobenzazole1a–c reagieren mit verschiedenen π-Akzeptoren wie Tetracyanoethylen (TCNE), 2,3-Dichlor-5,6-dicyano-1,4-benzochinon (DDQ), 2,3,5,6-Tetrachlor-1,4-benzochinon (CHL), Dicyanomethylenindan-1,3-dion (CNIND), 2,3-Dicyano-1,4-naphthochinon (DCNQ), 9-Dicyanomethylen-2,4,7-trinitrofluoren (DTF) und 2,3-Dichlor-1,4-naphthochinon (DCHNQ) unter Ausbildung von charge transfer — Komplexen (CT) zu heterocyclischen Verbindungen.
    Notes: Summary 2-Mercaptobenzazoles (1a–c) interact with several π-acceptors such as tetracyanoethylene (TCNE) 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 2,3,5,6-tetrachloro-1,4-benzoquinone (CHL) dicyanomethyleneindane-1,3-dione (CNIND), 2,3-dicyano-1,4-naphthoquinone (DCNQ), 9-dicyanomethylene-2,4,7-trinitrofluorene (DTF), and 2,3-dichloro-1,4-naphthoquinone (DCHNQ)via the formation of charge-transfer (CT) complexes to yield various heterocyclic compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807155
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  • 9
    Electronic Resource
    Electronic Resource
    A Simple Model of Pollutant Concentrations in a Street Canyon (1998)
    Springer
    Environmental monitoring and assessment 52 (1998), S. 269-280 
    Details
    ISSN: 1573-2959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A single compartment model has been constructed for predicting hourly concentrations of pollutant concentrations arising from vehicular emissions within a typical street canyon. The model takes account of traffic densities and composition to estimate pollutant emissions within the model compartment. Meteorological data on wind speed and direction are used to define the exchanges of pollutants between the compartment and the surrounding air. A parameter is also included to describe the exchange in calm conditions. The pollutant concentrations are then estimated from a steady state mass balance equation for the compartment, assuming conservation of pollutants. The model was applied to the prediction of carbon monoxide concentrations in Hope Street, Glasgow. Model parameters were fitted using field measurements, together with concurrent meteorological data and traffic flows estimated from traffic census data for Hope Street. The model accounted well for the observed variations in carbon monoxide. It was found that the model parameters varied seasonally, perhaps due to differences in atmospheric stability which have not so far been included in the model formulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005976513162
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  • 10
    Electronic Resource
    Electronic Resource
    Euler solutions for self-generated rotor blade-vortex interactionsPresented as AIAA paper 90-1588 at the AIAA 20th Fluids and Plasma Dynamics Conference, Buffalo, New York, June 1990. (1992)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 15 (1992), S. 427-451 
    Details
    ISSN: 0271-2091
    Keywords: Aerodynamics ; Rotor ; Blade-vortex ; Interactions ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A finite-difference procedure has been developed for the prediction of three-dimensional rotor blade-vortex interactions. The interaction velocity field was obtained through a non-linear superposition of the rotor flow field, computed using the unsteady three-dimensional Euler equations, and the embedded vortex wake flow field, computed using the law of Biot-Savart. In the Euler model, near wake rotational effects were simulated using the surface velocity ‘transpiration’ approach. As a result, a modified surface boundary condition was prescribed and enforced at each time step of the computations to satisfy the tangency boundary condition. For supercritical interactions using an upstream-generated vortex, accuracy of the numerical results were found to rely on the user-specified vortex core radius and vortex strength. For the more general self-generated subcritical interactions, vortex wake trajectories were computed using the lifting-line helicopter/rotor trim code CAMRAD. For these interactions, accuracy of the results were found to rely heavily on the CAMRAD-predicted vortex strength, vortex orientation with respect to the blade, and to a large extent on the user-specified vortex core radius. Results for the one-seventh scale model OLS rotor and for a non-lifting rectangular blade having a NACA0012 section are presented. Comparisons with the experimental windtunnel data are also made.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/fld.1650150405
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