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Sep 18, 2014Open Access
In this paper, we obtain some results on compact
operators. More specially, we prove that if T is a unitary operator on a
Hilbert space H, then it is compact if and only if H has a finite
dimension. Also, we prove that, if H is a Hilbert space with Heine-Borel
property, then  .
Sep 17, 2014Open Access
A new numerical evaluation of the Newtonian component of Mercury’s
perihelion advance over more than two centuries starting from about the year
2000 is made. Results are given for about the last 30 years of this interval.
Comparison with perturbation theory calculation results indicates necessity of
revision of previously held estimates of this quantity.
Sep 17, 2014Open Access
Variations in level of fluid in wells caused by
Earth tides and earthquakes are governed by two leading processes: deformation
of medium and filtration. These processes are described by identical systems of
equations and are united by the term “hydrodynamical phenomena”. The exact
solution is obtained for the problem of level variations in wells due to Earth
tides. The similar problem is solved for short-term precursors of a tectonic
earthquake. Results are consistent with data of field observat...
Sep 17, 2014Open Access
This study examined the influence of spatial
comfort and environmental workplace ergonomics on the job satisfaction of
librarians in the federal and state university libraries in Southern Nigeria.
The study adopted the survey research
design. The total enumeration technique was used to survey the 500
librarians from the 37 federal and
state universities libraries in Southern Nigeria. Descriptive statistics was
used to analyze the data collected. The findings revealed that there was
a positive re...
Sep 16, 2014Open Access
Let  be a sequence
of completely asymmetric stable process or stable subordinators defined on a
common probability space . In this paper, for proper selection of norming
constants, we study almost sure limit inferior for increments of stable
subordinators of geometr...
Sep 16, 2014Open Access
In this paper, the model of a multiverse made up of entangled pairs of
universes is presented. The arrow of time obtained from the principles of
thermodynamics and the arrow of time given by the thermodynamics of entanglement
for single universes are analyzed. The latter requires that the single
universes expand once they have crossed the quantum barrier at the Euclidean
regime. The possible relationship with respect to the growth of local
structures in a single universe is also discussed.
Sep 16, 2014Open Access
Present day metal cutting industry has to meet the challenges of
productivity and the quality of the machined parts during the turning processes
economically. In the present work, an attempt has been made to develop a model
and predict the tool wear and nodal temperature of hard turned AISI D3
hardened steel using Response Surface Methodology (RSM). The combined effects
of cutting speed, feed rate and depth of cut are investigated using contour
plots. RSM based Central Composite Design (CCD) is ...
Sep 15, 2014Open Access
Improved laboratory protocols for convenient and rapid transformations are highly desired in modern synthetic chemistry. Microwave irradiated reactions have received considerable attention in recent years and it is a subject of intense discussion in the scientific community. Microwave heating is more efficient in terms of the energy used, produces higher temperature homogeneity and is considerably more rapid than conventional heating methods. This technique as an alternative to conventional ener...
Sep 15, 2014Open Access
Esomeprazole is the S-isomer of Omeprazole and it is
a proton pump inhibitor (PPI). Esomeprazole is used in acid-related disorders
and it is available as several brands in the market which makes it difficult
for doctors to select the effective, safe and economic one for patients.
Therefore we have decided to establish pharmaceutical equivalence among the
different brands of esomeprazole available in Karachi, Pakistan. In our present
study different brands of esomeprazole are evaluated for weight...
Sep 15, 2014Open Access
Atomic
absorption analysis involves measuring the absorption of light by vaporized
ground state atoms and relating the absorption to concentration. The incident
beam of light is attenuated by atomic vapour absorption according to Beer’s
Law. The estimation of trace elements shows a colorful presentation of
different metals. It has been seen and found that the levels of zinc, calcium,
magnesium, aluminum are lower in Alzheimer’s disease samples in compari ...
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