313 research outputs found
Comparative efficacy of neem and groundnut oil-cakes with aldicarb against Meloidogyne incognita in tomato
Measurement issues when assessing quality of life outcomes for different types of hernia mesh repair
INTRODUCTION: The NHS is required to collect data from patient reported outcome measures (PROMs) for inguinal hernia surgery. We explored the use of one such measure, the Carolinas Comfort Scale(®) (CCS), to compare long-term outcomes for patients who received two different types of mesh. The CCS questionnaire asks about mesh sensation, pain and movement limitations, and combines the answers into a total score. PATIENTS AND METHODS: A total of 684 patients were treated between January 2007 and August 2008 and were followed up in November 2009. RESULTS: Data on 215 patients who met the inclusion criteria were available (96 patients who received Surgipro™ mesh and 119 who received Parietene™ Progrip™ mesh). Recurrence rates were similar in the Surgipro™ group (2/96, 2.1%) and Progrip™ group (3/118, 2.5%) (Fisher's exact test = 1.0). Chronic pain occurred less frequently in the Surgipro™ group (11/95, 11.6%) than in the Progrip™ group (22/118, 18.6%) (p<0.157). Overall, 90% of CCS total scores indicated a good outcome (scores of 10 or less out of 115). A principal component analysis of the CCS found that responses clustered into two subscales: 'mesh sensation' and 'pain+movement limitations'. The Progrip™ group had a slightly higher mesh sensation score (p<0.051) and similar pain+movement limitations scores (p<0.120). CONCLUSIONS: In this study of quality of life outcomes related to different mesh types, the CCS subscales were more sensitive to differences in outcome than the total CCS score for the whole questionnaire. Future research should consider using the CCS subscales rather than the CCS total score
A review of biofuels in India: challenges and opportunities
Economic development in India has raised millions of
people out of poverty and brought about the
modernization of society. Economic ambition though has
not been reached without costs. India has become more
reliant of imports of energy which affects energy security.
Pollution from industry, transport and traditional cook
stoves affects air quality and is increasing emissions of
greenhouse gases and contributing to climate change. .
India initiated bio-fuel production nearly a decade ago to
reduce its dependence on imported oil and thus improve
energy security and is now one of the largest producers of
Jatropha oil. The country began 5% ethanol blending (E5)
pilot program in 2001 and formulated the National
Mission on Biodiesel in 2003 to achieve 20% biodiesel
blends by 2011–2012 (Government of India, 2002, 2003).
Similar to many countries around the world, India's
biofuel programs experienced setbacks, primarily because
of supply shortages and global concerns over food
security. India’s National Policy on Biofuels in 2009
proposed a non-mandatory target of a 20% blend for both
biodiesel and ethanol by 2017, and outlines a broad
strategy for the biofuels program and policy measures to
be considered to support the program.
The aim of the paper is to review the potential for
biofuels to off-set the use of fossil fuels and reduce
greenhouse gas emissions in India. The recent historic use
of biofuels in the context of Government policy
developments will be presented. Example materials
(crops, wastes, residues) that can be used for biofuels will
be reviewed taking a systems approach through whole
lifecycle assessment. Case studies highlighting failure
and successes with biofuel utilization will be presented as
examples of the challenges and opportunities for the use
of biofuels in India, with suggestions made on the role of
biofuels in the future
Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation
The current status of electric dipole moments of diamagnetic atoms which
involves the synergy between atomic experiments and three different theoretical
areas -- particle, nuclear and atomic is reviewed. Various models of particle
physics that predict CP violation, which is necessary for the existence of such
electric dipole moments, are presented. These include the standard model of
particle physics and various extensions of it. Effective hadron level combined
charge conjugation (C) and parity (P) symmetry violating interactions are
derived taking into consideration different ways in which a nucleon interacts
with other nucleons as well as with electrons. Nuclear structure calculations
of the CP-odd nuclear Schiff moment are discussed using the shell model and
other theoretical approaches. Results of the calculations of atomic electric
dipole moments due to the interaction of the nuclear Schiff moment with the
electrons and the P and time-reversal (T) symmetry violating
tensor-pseudotensor electron-nucleus are elucidated using different
relativistic many-body theories. The principles of the measurement of the
electric dipole moments of diamagnetic atoms are outlined. Upper limits for the
nuclear Schiff moment and tensor-pseudotensor coupling constant are obtained
combining the results of atomic experiments and relativistic many-body
theories. The coefficients for the different sources of CP violation have been
estimated at the elementary particle level for all the diamagnetic atoms of
current experimental interest and their implications for physics beyond the
standard model is discussed. Possible improvements of the current results of
the measurements as well as quantum chromodynamics, nuclear and atomic
calculations are suggested.Comment: 46 pages, 19 tables and 16 figures. A review article accepted for
EPJ
Study of the temperature distribution in Si nanowires under microscopic laser beam excitation
The use of laser beams as excitation sources for the characterization of semiconductor nanowires (NWs) is largely extended. Raman spectroscopy and photoluminescence (PL) are currently applied to the study of NWs. However, NWs are systems with poor thermal conductivity and poor heat dissipation, which result in unintentional heating under the excitation with a focused laser beam with microscopic size, as those usually used in microRaman and microPL experiments. On the other hand, the NWs have subwavelength diameter, which changes the optical absorption with respect to the absorption in bulk materials. Furthermore, the NW diameter is smaller than the laser beam spot, which means that the optical power absorbed by the NW depends on its position inside the laser beam spot. A detailed analysis of the interaction between a microscopic focused laser beam and semiconductor NWs is necessary for the understanding of the experiments involving laser beam excitation of NWs. We present in this work a numerical analysis of the thermal transport in Si NWs, where the heat source is the laser energy locally absorbed by the NW. This analysis takes account of the optical absorption, the thermal conductivity, the dimensions, diameter and length of the NWs, and the immersion medium. Both free standing and heat-sunk NWs are considered. Also, the temperature distribution in ensembles of NWs is discussed. This analysis intends to constitute a tool for the understanding of the thermal phenomena induced by laser beams in semiconductor NWs
Dalit identity in urban Pokhara, Nepal
Urban migration by Nepalese Dalits has not only provided them with social, economic and educational opportunities, but also the possibility of escaping traditional caste-based discrimination. However, despite making the most of opportunities provided by the city, Dalits have not been able to pursue their political agenda to the extent of other ethnic communities. This study in the city of Pokhara, Nepal, explored Dalit identity using two rounds of focus group discussions involving a total of 23 individuals drawn from a range of Dalit caste groups with a variety of livelihoods. The results describe the caste-based discrimination experienced by the participants and the different strategies they employ to either reinvent themselves by changing names; or embracing their caste-heritage and taking advantage of affirmative action programmes. Whilst urban migration can provide some relief from discrimination, the study reveals that caste still remains prominent in the lives of Dalits in Pokhara. The paper argues that Dalit unity and elimination of intra-Dalit caste-based discrimination are needed in order to institutionalise their citizenship rights in post conflict Nepal
Human Health Risk Assessment For Arsenic: A Critical Review
Millions of people are exposed to arsenic resulting in a range of health implications.This paper provides an up-to-date review of the different sources of arsenic (water, soil and food), indicators of human exposure (biomarker assessment of hair, nail, urine and blood), epidemiological and toxicological studies on carcinogenic and non-carcinogenic health outcomes, and risk assessment approaches. The review demonstrates a need for more work evaluating the risks of different arsenic species such as; arsenate, arsenite monomethylarsonic acid, monomethylarsonous acid, dimethylarsinic acid and dimethylarsinous acid as well as a need to better integrate the different exposure sources in risk assessments
Measurement of jet suppression in central Pb-Pb collisions at root s(NN)=2.76 TeV
The transverse momentum(p(T)) spectrum and nuclear modification factor (R-AA) of reconstructed jets in 0-10% and 10-30% central Pb-Pb collisions at root s(NN) = 2.76 TeV were measured. Jets were reconstructed using the anti-k(T) jet algorithm with a resolution parameter of R = 0.2 from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal). The jet p(T) spectra are reported in the pseudorapidity interval of \eta(jet)\ 5 GeV/c to suppress jets constructed from the combinatorial background in Pb-Pb collisions. The leading charged particle requirement applied to jet spectra both in pp and Pb-Pb collisions had a negligible effect on the R-AA. The nuclear modification factor R-AA was found to be 0.28 +/- 0.04 in 0-10% and 0.35 +/- 0.04 in 10-30% collisions, independent of p(T), jet within the uncertainties of the measurement. The observed suppression is in fair agreement with expectations from two model calculations with different approaches to jet quenching. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.Peer reviewe
Effect of exposure to sublethal concentrations of sodium cyanide on the carbohydrate metabolism of the Indian Major Carp Labeo rohita (Hamilton, 1822)
Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb⁻¹ of pp collisions at \sqrts = 13 TeV with the ATLAS experiment
A search for flavour-changing neutral current (FCNC) events via the coupling of a top quark, a photon, and an up or charm quark is presented using 81 fb−1 of proton–proton collision data taken at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Events with a photon, an electron or muon, a b-tagged jet, and missing transverse momentum are selected. A neural network based on kinematic variables differentiates between events from signal and background processes. The data are consistent with the background-only hypothesis, and limits are set on the strength of the tqγ coupling in an effective field theory. These are also interpreted as 95% CL upper limits on the cross section for FCNC tγ production via a left-handed (right-handed) tuγ coupling of 36 fb (78 fb) and on the branching ratio for t→γu of 2.8×10−5 (6.1×10−5). In addition, they are interpreted as 95% CL upper limits on the cross section for FCNC tγ production via a left-handed (right-handed) tcγ coupling of 40 fb (33 fb) and on the branching ratio for t→γc of 22×10−5 (18×10−5). © 2019 The Author(s
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