262 research outputs found
Production of N2 Vegard-Kaplan and Lyman-Birge-Hopfield emissions on Pluto
We have developed a model to calculate the emission intensities of various
vibrational transitions of N triplet band and Lyman-Birge-Hopfield (LBH)
band emissions in the dayglow of Pluto for solar minimum, moderate, and maximum
conditions. The calculated overhead intensities of Vegard-Kaplan (), First Positive (), Second Positive (), Wu-Benesch (), Reverse First Positive, and LBH (-- )
bands of N are 17 (74), 14.8 (64), 2.4 (10.8), 2.9 (12.7), 2.9 (12.5), and
2.3 (10) R, respectively, for solar minimum (maximum) condition. We have
predicted the overhead and limb intensities of VK (150-190 nm) and LBH (120-190
nm) bands of N on Pluto for the New Horizons (NH) flyby condition that can
be observed by Alice: the ultraviolet imaging spectrograph also know as
P-Alice. The predicted limb intensities of VK and LBH bands peak at radial
distance of 2000 km with the value of about 5 (13) and 9.5 (22) R for
solar zenith angle 60 (0), respectively. We have also
calculated overhead and limp intensities of few prominent transition of CO
Fourth Positive bands for NH flyby condition.Comment: 7 pages, 5 figures, 2 table
Production of N2 Vegard-Kaplan and other triplet band emissions in the dayglow of Titan
Recently the Cassini Ultraviolet Imaging Spectrograph has revealed the
presence of N2 Vegard-Kaplan band emissions in Titan's dayglow limb
observation. We present model calculations for the production of various N2
triplet states in the upper atmosphere of Titan. The Analytical Yield Spectra
technique is used to calculate steady state photoelectron fluxes in Titan's
atmosphere, which are in agreement with those observed by the Cassini's CAPS
instrument. Considering direct electron impact excitation, inter-state
cascading, and quenching effects, the population of different levels of N2
triplet states are calculated under statistical equilibrium. Densities of all
vibrational levels of each triplet state and volume production rates for
various triplet states are calculated in the model. Vertically integrated
overhead intensities for the same date and lighting conditions as the reported
by UVIS observations for N2 VK, 1P, 2P, Wu-Benesch, and Reverse First Positive
bands of N2 are found to be 132, 114, 19, 22, and 22 R, respectively. Overhead
intensities are calculated for each vibrational transition of all the triplet
band emissions of N2, which span a wider spectrum of wavelengths from
ultraviolet to infrared. The calculated limb intensities of total and prominent
transitions of VK band are presented. The model limb intensity of VK emission
within the 150-190 nm wavelength region is in good agreement with the Cassini
UVIS observed limb profile. An assessment of the impact of solar EUV flux on
the N2 triplet band emission intensity has been made by using three different
solar flux models, viz., Solar EUV Experiment, SOLAR2000 model of Tobiska
(2004), and HEUVAC model of Richards et al, (2006). The calculated N2 VK band
intensity at the peak of limb intensity due to S2K and HEUVAC solar flux models
is a factor of 1.2 and 0.9, respectively, of that obtained using SEE solar EUV
flux.Comment: 25 pages, 11 figures; Icarus, 201
BRIDGING THE GAP BETWEEN R&D AND COMMERCIALIZATION IN PHARMACEUTICAL INDUSTRY: ROLE OF MEDICAL AFFAIRS AND MEDICAL COMMUNICATIONS
The launch of a new drug into the market requires a unique and complex process initiating from development (R&D) to its commercialization (marketing authorization and selling of these products). Due to increased burden by regulatory authorities, the medical affairs evolved as separate medical organization to bifurcate medical and commercial functions. It is closely associated with development but works mainly on post-approval activities by providing both the scientific and clinical expertise. The core functional areas of medical affairs (MA) include: medical communications/publications, medical science liaisons (MSLs) and medical information. In the recent years ethical and evidence-based medical communications has attained increasing importance in emerging pharmaceutical markets. A successful product launch is based on both promotional (medico-marketing) and non-promotional (medical information services, publications) material to support the product and to report clinical trials in peer-reviewed international journals. Local clinical or observational studies and medical surveys can provide sufficient information about the product. Besides, a number of medical communication like product monographs, brochures, slide kits, leave behind literature (LBL), continuous medical education (CME) slides, training modules, key opinion leader documents(promotional inputs) and conference posters, abstracts, and journal articles (research based inputs)are other ways to aid in an effective product launch. In the last 10 years medical writers in India have developed the capability to meet this challenge through their training and work experience making India hub for medical communications services.
KEYWORDS: Key opinion leaders; Medical affairs; Medical communications; Medical science liaisons; Medical writing
Evaluation of lipid profile and apolipoproteins in cord blood from Tribal and nontribal population of Udaipur region, India
Background: Cardiovascular diseases are the leading cause of mortality in India. The important factor associated is dyslipidemia. A strong relationship has been seen in epidemiological studies between cholesterol and cardiovascular disease. The present study was planned to analyze cord blood lipid profile, apolipoproteins and atherogenic index in tribal and nontribal population and compare them gender wise.Methods: Our study group consisted of 250 healthy full-term newborn. The cord blood was collected immediately after a normal delivery. The blood was tested to determine lipid profile, apolipoproteins and atherogenic index. Results: The results showed that the levels of lipid profile, apolipoproteins and ratio (TC/HDL, TC/LDL, HDL/LDL, and LDL/HDL) were higher in non-tribal population than tribal ones. Gender wise comparison revealed higher levels in male non-tribal neonates as compared to female non-tribal neonates. The apolipoproteinB and Atherogenic index (ApoB/ApoA-1) were higher in females than male non-tribal neonates in cord blood. The trends were reversed in the tribal population.Conclusions: The result concluded that tribal and non-tribal population, also female and male neonates have genetic variation and difference in lipid metabolism
Calculations of N2 triplet states vibrational populations and band emissions in Venusian dayglow
A model for N2 triplet states band emissions in the Venusian dayglow has been
developed for low and high solar activity conditions. Steady state
photoelectron fluxes and volume excitation rates for N2 triplet states have
been calculated using the Analytical Yield Spectra (AYS) technique. Model
calculated photoelectron flux is in good agreement with Pioneer Venus
Orbiter-observed electron flux. Since inter-state cascading is important for
the triplet states of N2, populations of different levels of N2 triplet states
are calculated under statistical equilibrium considering direct electron impact
excitation, and cascading and quenching effects. Densities of all vibrational
levels of each triplet state are calculated in the model. Height-integrated
overhead intensities of N2 triplet band emissions are calculated, the values
for Vegard-Kaplan (A^3Sigma_u^+ - X^1Pi_g^+), First Positive (B^3Pi_g -
A^3Sigma_u^+), Second Positive (C^3Pi_u - B^3Pi_g), and Wu-Benesch (W^3Delta_u
- B^3Pi_g) bands of N2, are 1.9 (3.2), 3 (6), 0.4 (0.8), and 0.5 (1.1) kR,
respectively, for solar minimum (maximum) conditions. The intensities of the
three strong Vegard-Kaplan bands (0, 5), (0, 6), and (0, 7) are 94 (160), 120
(204), and 114 (194) R, respectively, for solar minimum (maximum) conditions.
Limb profiles are calculated for VK (0, 4), (0, 5), (0, 6) and (0, 7) bands.
The calculated intensities on Venus are about a factor 10 higher than those on
Mars. The present study provides a motivation for a search of N2 triplet band
emissions in the dayglow of Venus.Comment: Icarus, 201
Impact of solar EUV flux on CO Cameron band and CO2+ UV doublet emissions in the dayglow of Mars
This study is aimed at making a calculation about the impact of the two most
commonly used solar EUV flux models -- SOLAR2000 (S2K) of \cite{Tobiska04} and
EUVAC model of \cite{Richards94} -- on photoelectron fluxes, volume emission
rates, ion densities and CO Cameron and CO UV doublet band dayglow
emissions on Mars in three solar activity conditions: minimum, moderate, and
maximum. Calculated limb intensities profiles are compared with SPICAM/Mars
Express and Mariner observations. Analytical yield spectrum (AYS) approach has
been used to calculate photoelectron fluxes in Martian upper atmosphere.
Densities of prominent ions and CO molecule in excited triplet a state
are calculated using major ion-neutral reactions. Volume emission rates of CO
Cameron and CO UV doublet bands have been calculated for dif{}ferent
observations (Viking condition, Mariner and Mars Express SPICAM observations)
on Mars. For the low solar activity condition, dayglow intensities calculated
using the S2K model are 40% higher than those calculated using the EUVAC
model. During high solar activity, due to the higher EUV fluxes at wavelengths
below 250 \AA\ in the EUVAC model, intensities calculated using EUVAC model are
slightly higher (20%) than those calculated using S2K model. Irrespective
of the solar activity condition, production of Cameron band due to
photodissociative excitation of CO is around 50% higher when S2K model is
used. Altitude of peak limb brightness of CO Cameron and CO UV doublet
band is found to be independent of solar EUV flux models. Calculated limb
intensities of CO Cameron and CO UV doublet bands are on an average a
factor of 2 and 1.5, respectively, higher than the SPICAM Mars
Express observation, while they are consistent with the Mariner observations.Comment: 27 Pages, 12 Figures; Planetary and Space Science, 201
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