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61.
We present a grand unified model of the strong, electromagnetic and weak interactions based on a local SU(8)L×SU(8)R gauge theory which possesses a global U(8)L × U(8)R invariance. We break the symmetry down to the standard SU(3)C × SU(2)L × U(1) model, with the proton remaining stable and the left-handed neutrinos obliged to remain massless. A novel feature of our model is the simultaneous absence of both strong CP violations and of axions. 相似文献
62.
On application of dc electric fields to a sample of KNO2 (99.9% pure) fused between two heavily nickel plated copper plates the sample does not acquire the potential difference equal
to the applied emf even though there is no external potential drop in the circuit. Also a very large capacitance of the order
of 3000μF is obtained for this sample which is attributed to interfacial polarization effect. An equivalent circuit is given to explain
the dc electrical behaviour of the sample. The idea of solid state battery does not seem to be applicable in the case of fused
KNO2. The large value of the capacitance for dc fields in series with large voltage-dependent resistance is the cause of the slow
discharge of the condenser. 相似文献
63.
N. Deshpande 《Physics letters. [Part B]》1980,90(4):431-435
In the valence-quark c-decay scheme the decay is expected to be strongly suppressed. We suggest that final state soft gluon exchange may account for the rather large branching ratio recently measured for this process, and study two-body decays of charmed mesons in our new scheme. 相似文献
64.
We calculate the general transition qi → qj + γ for arbitrary quark flavors in a non-linear Rξ gauge. The reduced number of Feynman diagrams as well as simplified Ward identities greatly facilitates this calculation. A general result with intermediate quarks of arbitrary mass is presented and the special cases s → d + γ as well as s → d + gluon are discussed. 相似文献
65.
66.
A.V.Rama Rao V.H. Deshpande B.Ramamohan Rao K. Ravichandran 《Tetrahedron letters》1982,23(10):1115-1116
2-Acetyl-5,8-dimethoxy-3,4-dihydronaphthalene is synthesised easily·starting from 2-acetyl-5,8-dimethoxytetralone. 相似文献
67.
To engineer lithium sulphate based material with high ionic conductivity at lowest possible temperature, the electrical conductivity of binary sulphates of Li2SO4 with Na2SO4, K2SO4, MgSO4, ZnSO4 and Ag2SO4 has been measured in the temperature range from 513 K to 773 K. The results are interpreted on the basis of different phases present therein. Li2SO4:Ag2SO4(40:60) mol % has high ionic conductivity = 2.17×10-3(ohm cm)-1 at 606 K which could be utilized in power sources. 相似文献
68.
Amol Rahane Mrinalini Deshpande Ravindra Pandey 《Journal of nanoparticle research》2010,12(3):727-736
Structures, electronic and magnetic properties of Mn and Mn2 doped stoichiometric (GaO)
n
clusters with n = 1−7 are studied in the framework of density functional theory. Doping of a Mn atom is found to be energetically favorable
in (GaO)
n
clusters and the equilibrium configurations are found to be determined by the metal–oxygen interactions. Mn prefers to maximize
the number of Mn–O bonds by selecting a Ga site in the cluster which increases its coordination with oxygen. Addition of a
Mn atom in Mn(GaO)
n
clusters results into the ground state to be either ferromagnetic or antiferromagnetic depending on the Mn coordination number
and the Mn–Mn bond-length in the given Mn2(GaO)
n
cluster. 相似文献
69.
We prove a common fixed point theorem for discontinuous,noncompatible mappings on noncomplete intuitionistic fuzzy metric spaces by using a new commutativity condition.We validate our main result by an example. 相似文献
70.
M. N. Deshpande 《International Journal of Mathematical Education in Science & Technology》2013,44(2):253-256
In this note properties of two sequences generated by the recurrence relation G n+2 = 4G n+1 ? G n , are studied. It is shown that one of the sequences leads to a family of diophantine triplets. Some interesting properties of these sequences are also established. 相似文献