273 research outputs found
Influence of journals indexed from a country on its research output: An empirical investigation
Scientific journals are currently the primary medium used by researchers to
report their research findings. The transformation of print journals into
e-journals has simplified the process of submissions to journals and also their
access has become wider. Journals are usually published by commercial
publishers, learned societies as well as Universities. There are different
number of journals published from different countries. This paper attempts to
explore whether the number of journals published from a country influences its
research output. Scopus master journal list is analysed to identify journals
published from 50 selected countries with significant volume of research
output. The following relationship are analysed: (a) number of journals from a
country and its research output, (b) growth rate of journals and research
output for different countries, (c) global share of journals and research
output for different countries, and (d) subject area-wise number of journals
and research output in that subject area for different countries. Factors like
journal packing density are also analysed. The results obtained show that for
majority of the countries, the number of journals is positively correlated to
their research output volume, though some other factors also play a role in
growth of research output. The study at the end presents a discussion of the
analytical outcomes and provides useful suggestions on policy perspectives for
different countries.Comment: 6 figures and 4 table
Heterosis study in Okra [Abelmoschus esculentus (L.) Moench] genotypes for pod yield attributes
A study was conducted at Vegetable Research Farm, Department of Horticulture, Institute of Agriculture Sciences, Banaras Hindu University, Varanasi during Spring-Summer and Rainy season of 2012 and 2013 using 12 diverse parental lines of okra and their 66 F1 hybrids (through diallel cross-excluding reciprocals) with the objective to measure the extent of heterosis over better parent and standard commercial check varieties for the purpose of judging the extent up to which heterosis can be exploited in commercial okra breeding. The extent of heterosis for five best crosses over better parent and check (48.32 % to 82.42 % and 7.13 % to 35.66 %, respectively) for yield per hectare suggested the great scope of realizing higher yield in okra through heterosis breeding. Other economic traits also recorded moderate to high level of heterosis over the better parents. The cross combination IC -282280ΓEC β 329380showed high heterosis over better parent and standard check for pod yield (82.42 % and 35.66 %), number of pods per plant (62.82 % and 48.54 %) and respectively. This particular cross combination eventually resulted the height magnitude of heterobeltiosis and standard heterosis for the most of the desirable growth parameters as well as yield attributing characters which may be taken for further breeding programme
India's rank and global share in scientific research -- how publication counting method and subject selection can vary the outcomes
During the last two decades, India has emerged as a major knowledge producer
in the world, however different reports put it at different ranks, varying from
3rd to 9th places. The recent commissioned study reports of Department of
Science and Technology (DST) done by Elsevier and Clarivate Analytics, rank
India at 5thand 9th places, respectively. On the other hand, an independent
report by National Science Foundation (NSF) of United States (US), ranks India
at 3rd place on research output in Science and Engineering area. Interestingly,
both, the Elsevier and the NSF reports use Scopus data, and yet surprisingly
their outcomes are different. This article, therefore, attempts to investigate
as to how the use of same database can still produce different outcomes, due to
differences in methodological approaches. The publication counting method used
and the subject selection approach are the two main exogenous factors
identified to cause these variations. The implications of the analytical
outcomes are discussed with special focus on policy perspectives
Laparoscopic Cholecystectomy Conversion Rates Two Decades Later
Male patients greater than 50 years of age and cases performed by low-volume surgeons were found to have a higher rate of conversion to open procedures
Self Interacting Dark Matter and Dirac neutrinos via Lepton Quarticity
In this paper, we put forward a connection between the self-interacting dark
matter and the Dirac nature of neutrinos. Our exploration involves a discrete symmetry, wherein the Dirac neutrino mass is produced
through a type-I seesaw mechanism. This symmetry not only contributes to the
generation of the Dirac neutrino mass but also facilitates the realization of
self-interacting dark matter with a light mediator that can alleviate
small-scale anomalies of the while being consistent with
the latter at large scales, as suggested by astrophysical observations. Thus
the stability of the DM and Dirac nature of neutrinos are shown to stem from
the same underlying symmetry. The model also features additional relativistic
degrees of freedom of either thermal or non-thermal
origin, within the reach of cosmic microwave background (CMB) experiment
providing a complementary probe in addition to the detection prospects of DM.Comment: 13 pages, 13 captioned figures, accepted for publication in Phys.
Rev.
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Congenital atrichia with papular lesions
Congenital atrichia with papular lesions is a rare, autosomal recessive and irreversible form of total alopecia of the body hair characterized by hair loss soon after birth and the development of keratinfilled cysts or horny papules over extensive areas of the body. The condition is associated with a mutation of the human hairless gene on chromosome region 8p12. We report a 1-year-old boy presenting with the absence of scalp and body hair since birth. On examination, he had complete absence of hair on the scalp, eyebrows, and eyelashes. Multiple, discrete, pearly-to-skin-colored papules of 1-3mm in size were present over the scalp. The skin biopsy from a scalp papule revealed normal overlying epidermis with multiple keratin cysts and hypoplastic hair follicles in the upper dermis
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