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431.
Dikonda S. Rani Parupalli V. A. Lakshmi Vuppalapati Jayatyagaraju 《Transition Metal Chemistry》1994,19(1):75-77
Summary Manganese(II), iron(III), cobalt(II), nickel(II), copper(II) and zinc(II) complexes of a new multidentate oxygen-nitrogen donor, bis(N-salicylidene)-2,3-dihydrazino-1,4-quinoxaline (H2BSDHQ) were prepared and characterised by elemental analysis, conductance, thermal, spectral and magnetic data. H2BSDHQ deprotonates to give a dibasic ONNO donor set in a trivalent iron(III) complex, which binds to the divalent metal ions in a bis-tridentate fashion, using two monobasic ONN donor sets, and resulting in polymeric complexes. Octahedral geometries are proposed for all these complexes, and preliminary studies show that they possess potential antimicrobial activity. 相似文献
432.
Ljiljana M. Milovanović Ivanka Popović Marija R. Ranić Snežana Saičić D. Skala D. Antonović 《Journal of Thermal Analysis and Calorimetry》2007,89(3):929-934
In this study non-isothermal non-oxidative and oxidative TG analysis was applied as a method for determining the thermal stability
of the total lipids extracted from raw and maturing intramuscular tissue of fallow deer (Cervus Dama Dama L.). The total lipids
were extracted from intramuscular tissue, according to the Folch method and stored for nine months at +4 and −18°C. The changes
in the thermal stability of the total lipids during non-oxidative and oxidative TG analysis were correlated with the lipid
composition, i.e. fatty acid composition. The Flynn-Wall method was used to determine the values of the activation energy
of thermal degradation of the total lipids in a defined mass loss range. 相似文献
433.
Jhansi Rani Kalluri Tahir Arbneshi Dr. Sadia Afrin Khan Adria Neely Perry Candice Birsen Varisli Marla Washington Shardae McAfee Britinia Robinson Santanu Banerjee Dr. Anant Kumar Singh Dr. Dulal Senapati Dr. Paresh Chandra Ray Prof. 《Angewandte Chemie (International ed. in English)》2009,48(51):9668-9671
434.
Meenu Thakur B. R. Behera Ruchi Mahajan N. Saneesh Gurpreet Kaur Priya Sharma R. Dubey Kushal Kapoor A. Yadav Neeraj Kumar S. Kumar Kavita Rani P. Sugathan A. Jhingan A. Chatterjee M. B. Chatterjee S. Mandal A. Saxena Santanu Pal S. Kailas Avazbek Nasirov Bakhodir Kayumov 《The European Physical Journal A - Hadrons and Nuclei》2017,53(6):133
435.
The non-relativistic radial Schr¨odinger equation is analytically solved using asymptotic iteration method within the framework of a general interaction potential whose special cases are the Cornell and Cornell plus harmonic potentials. The energy eigenvalues expression is derived in three dimensional space, which is further used to calculate the mass spectra of ˉcc,ˉbb,ˉbc, cˉs, bˉs and b ˉq mesons. The obtained results of this work are in good agreement with experimental and other relativistic results and also improved in comparison with other non-relativistic recent studies. 相似文献
436.
437.
R. Dhanya V. C. Kishore K. Sreekumar C. Sudha Kartha Rani Joseph 《Macromolecular Symposia》2009,277(1):112-118
Poly(6-tert-butyl-3,4-dihydro-2H-1,3-benzoxazine) was synthesized by thermally activated cationic ring opening polymerization. The structure of the polymer was confirmed by spectral and thermal studies. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) were estimated using cyclic voltammetry and optical absorption. Modulated photocurrent measurement technique was employed to study the spectral and field dependence of photocurrent. Photocurrent of the order of 1.5 µA/m2 was obtained for polymer at a biasing electric field of 40 V/µm. 相似文献
438.
The unsteady natural convective couple stress fluid flow over a semi-infinite vertical cylinder is analyzed for the homogeneous first-order chemical reaction effect. The couple stress fluid flow model introduces the length dependent effect based on the material constant and dynamic viscosity. Also, it introduces the biharmonic operator in the Navier-Stokes equations, which is absent in the case of Newtonian fluids. The solution to the time-dependent non-linear and coupled governing equations is carried out with an unconditionally stable Crank-Nicolson type of numerical schemes. Numerical results for the transient flow variables, the average wall shear stress, the Nusselt number, and the Sherwood number are shown graphically for both generative and destructive reactions. The time to reach the temporal maximum increases as the reaction constant K increases. The average values of the wall shear stress and the heat transfer rate decrease as K increases, while increase with the increase in the Sherwood number. 相似文献
439.
S. Shamaila R. Sharif S. Riaz M. Ma M. Khaleeq-ur-Rahman X.F. Han 《Journal of magnetism and magnetic materials》2008
Magnetic and magnetization properties of fcc Co1−xPtx (x?0.3) alloy nanowires fabricated by electrodeposition into self-synthesized anodic alumina templates are investigated. Magnetization curves, measured for varying wire geometries, show a crossover of easy axis of magnetization from parallel to perpendicular to the nanowire axis as a function of the diameter and length. The measured values of coercivity (Hc) and remanent squareness (SQ) of CoPt nanowire arrays, as a function of angle (θ) between the field and wire axis, support the crossover of easy axis of magnetization. The curling mode of the magnetization reversal process is observed for CoPt nanowire arrays. At low temperatures, the easy axis for magnetization of the nanowires is observed to deviate from the room-temperature orientation. 相似文献
440.
Ramandeep Kaur Ripneel Kaur Aman Grover Susheela Rani Ashok Kumar Malik Abuzar Kabir Kenneth G. Furton 《Journal of separation science》2019,42(14):2407-2417
A rapid extraction and cleanup method using selective fabric phase sorptive extraction combined with gas chromatography and mass spectrometry has been developed and validated for the determination of broad polarity spectrum emerging pollutants, ethyl paraben, butyl paraben, diethyl phthalate, dibutyl phthalate, lidocaine, prilocaine, triclosan, and bisphenol A in various aqueous samples. Some important parameters of fabric phase sorptive extraction such as extraction time, matrix pH, stirring speed, type and volume of desorption solvent were investigated and optimized. Calibration curves were obtained in the concentration range 0.05–500 ng/mL. Under the optimum conditions, the limits of detection were in the range 0.009 –0.021 ng/mL. This method was validated by analyzing the compounds in spiked aqueous samples at different levels with recoveries of 93 to 99% and relative standard deviations of <6%. The developed method was applied for the determination of the emerging contaminants in tap water, municipal water, ground water, sewage water, and sludge water samples. The results demonstrate that fabric phase sorptive extraction has great potential in the preconcentration of trace analytes in complex matrix. 相似文献