Physics (PHY): Recent submissions
Now showing items 21-40 of 715
-
X-ray crystallographic investigations of some analgetic pyrazole derivatives and their crystalline complexes
This thesis reports the single?crystal X?ray diffraction studies on: Antipyrine, a 1:1 complex between antipyrine and salicylic acid (salipyrine), Amidopyrine, Phenylbutazone, and a 2:1 complex between phenylbutazone and ... -
Rb-Sr Geochronology and Trace Elements studies on precambrian granitic rocks of Mysore
Abstract not available -
Investigations in high temperature X-ray crystallography
The field of X?ray single?crystal structure analysis beyond 1000?°C is, at present, highly underdeveloped and hardly explored. Structure determinations, as are routinely performed at room and low temperatures, have not ... -
Balloon-borne far infrared observations of galactic star forming regions
Stars are born predominantly within dense cores of giant molecular clouds having number densities > 10? cm?³. This premise is strongly supported by a wealth of observations showing that the hallmarks of newly formed ... -
Multiscaling in three-dimensional fluid turbulence
Fluid turbulence remains one of the most fascinating unsolved problems in Physics. Different aspects of it have attracted physicists and fluid dynamicists for decades. This thesis studies multiscaling of velocity structure ... -
Star formation in giant extragalactic H II regions
We have compared the B V R H? photometry of a sample of giant extragalactic H?II regions with an evolutionary population synthesis model, after correcting for extinction by dust. The basic diagnostic diagrams used are the ... -
Nuclear quadrupole resonance and relaxation - instrumentation and investigations in group V Trihalides
In the present investigation, we have used nuclear quadrupole resonance (NQR) as a local probe to study the structural and dynamical aspects of Group V trihalides. For this purpose, we have set up a pulsed NQR spectrometer ... -
Study of the Environmental influences on spiral galaxies in clusters
A study is made of some of the environmental factors that affect the dynamics and content of both the gas and stars in cluster spiral galaxies. Two issues form the focus of this thesis: (1) the H?I?deficiency of cluster ... -
structure and conformation of steriodals
In the previous chapter, the influence of the same additional ring on two different steroid nuclei (1,4?diene?3?one and 5?ene) was discussed. Here, we present the effects of three different additional rings on the 5?ene ... -
Observational constraints on the formation of pre-galactic condensates in the universe.
The distribution of galaxies in the Universe displays structure on a variety of scales, ranging from groups of a few galaxies to rich clusters containing thousands of galaxies. These clusters are in turn clustered to form ... -
The influence of pulsars on supernova remnants
Both Supernova Remnants (SNRs) and pulsars are products of supernova explosions; so it is natural to expect an association between them. Since various selection effects work against the detection of pulsars, the best way ... -
Non-ohmic conduction electrical switching and magneto-resistance of quasi one-dimensional conductors at high pressures
Electrical switching in the three charge?transfer complexes mtpa?(TCNQ)_x, benzidine–DDQ, and o?tolidine–DDQ has a common origin, and the basic features observed in these complexes are the same. Current–voltage (I–V) ... -
Investigations on the Mechanical threshold in IV-V-VI Glasses
The main features observed in the DSC studies of Ge–As–Te glasses are the following: (i) The T? versus ?r? plot for the two families of Ge–As–Te glasses shows a linear increase with ?r?, with a small change in slope at ?r? ...