751 research outputs found
A mis-splicing early flowering 3 (elf3) allele of lentil is associated with yield enhancement under terminal heat stress
No full textThere is a vast scope of area expansion of lentils after harvesting wet rice in South Asia. However, due to the photoperiod effect and terminal heat, the existing short-duration varieties failed to minimize yield loss under late-sown conditions. A mis-splicing causing A/G SNP present in the last nucleotide of exon 3 of early flowering 3 (ELF3) gene (elf3 allele) in a lentil line, L4710, is associated with the photoperiod insensitive flowering and the fast absolute growth rate (AGR). None of the Indian cultivars tested in this study, either early or late, possesses the non-functional elf3 allele. However, the A to G transition in ELF3-exon2 replaces glycine with aspartic acid at the 403rd amino acid in all the Indian varieties tested, compared to the reference sequence of Mediterranean accession, ILL5588. Therefore, targeting A/G SNP of exon 3, a PCR-based codominant marker is developed. The elf3 allele is correlated with the fast AGR and early flowering, but low yield and biomass, in an L4710 × LL56–derived RIL-population, compared to ELF3 carrying alleles when sown on 15th November. However, in a month of delayed sowing (20th December), the same elf3-RILs revealed a higher yield and biomass with slower AGR Moreover, three elf3-carrying lines, grown in delayed condition (20 December) for two consecutive years in three locations, outyielded three popular high-yielding cultivars that carry functional ELF3. Thus, elf3-carrying high-yielding lines could be the breeder’s choice to expand and enhance lentil yield in short-season environments and in vast rice fallows of south Asia, where delayed rice harvest occurs frequently
Hadronic event shapes in pp collisions at 7 TeV
No full textAbstractEvent-shape variables exhibit sensitivity to the structure of QCD radiation in hadron collisions. Five infra-red and collinear safe event-shape variables, each sensitive to the different features of multi-jet production, are measured using hadronic jet data collected with the CMS detector from pp collisions at s=7 TeV, corresponding to a total integrated luminosity of 5 fb−1. The measurements are compared to predictions of various QCD-inspired event generators of multi-jet production
Heavy neutrino searches at ATLAS and CMS
No full textMultiple theories beyond the Standard Model predict the existence of heavy neutrinos in order to explain the light neutrino masses, such as the Type I seesaw mechanism, which introduces new heavy neutrino states without additional vector bosons, or the Type III seesaw mechanism which introduces additional heavy lepton triplets. Left-right symmetric models, which restore parity symmetry in weak interactions at a higher energy scale, also predict heavy neutrinos, along with right-handed counterparts to the weak gauge bosons. Searches for such heavy Majorana or Dirac neutrinos with the ATLAS and CMS detectors will be presented using proton-proton data from the LHC at a center-of-mass energy of 13 TeV
Search for heavy right-handed gauge bosons decaying into boosted heavy neutrinos with the ATLAS detector at √s = 13 TeV
No full textSeveral beyond Standard Model theories exist that predict the existence of the heavy neutrinos at TeV scale, thus discoverable at the LHC, in order to explain the light neutrino masses. In Type I seesaw mechanism the heavy neutrinos are introduced as at least two fermionic singlets, where as in case of Type III seesaw mechanism they are introduced with additional fermionic triplets. Type I seesaw mechanism can be further embedded into the Left-Right Symmetric Model, which restores the parity symmetry at a high energy scale by introducing heavy neutrinos as the right handed parity gauge partners of the corresponding left handed neutrino fields. The more is the energy of the LHC the stronger is the motivation to explore the possibility for the existence of such heavy neutrinos in a high momentum phase space. If the mass ratio between the neutrino and the right handed gauge boson is significantly low it gives rise to an unusual topology with a large radius jet having a hard lepton inside as a proxy for the heavy neutrino. Searches for such high momentum heavy neutrino along with the future prospect of expanding the phase space with the ATLAS detector will be presented using proton-proton data from the LHC at a center-of-mass energy of 13 TeV
Hadronic event shapes in pp collisions at 7 TeV
No full textEvent shape variables exhibit sensitivity to the structure of QCD radiation in hadron collisions. Five infrared- and collinear-safe event shape variables, each sensitive to the different features of multi-jet production, are measured using hadronic jet data collected with the CMS detector from pp collisions at = 7 TeV, corresponding to a total integrated luminosity of 5 fb. The measurements are compared to predictions of various QCD-inspired event generators of multi-jet production
Jet measurements from CMS
No full textRecent results on jets measurements as well as jet properties and jet variables are presented. These studies illustrate the perturbative and non-perturbative aspects of QCD since jets are the most direct manifestations of these scenarios. The data samples used for these measurements were collected at proton-proton collisions with center-of-mass energy (sqrt(s)) equal to 2.76, 7 and 8 TeV with the CMS detector at the LHC
From illegal to organic: fair trade-organic tea production and women's political futures in Darjeeling, India
No full textMy dissertation is an ethnographic engagement with the localized effects of emerging global ethical regimes like Fair Trade. It explores the meaning and materiality of Fair Trade as it unfolds among women producers in Darjeeling's tea industry. It looks at how the specifics of agricultural commodity production premised on organic and Fair Trade stipulations can influence the bargaining power of marginalized women producers in formal and informal production settings. Grounded in anthropological theory and methods, this project contributes to recent debates among feminist scholars on issues of work under neoliberal production systems and women's political agency, interdisciplinary research on global alternative trade, south Asian labor ethnographies and scholarship on social justice.
While Fair Trade-organic production is looked upon by its founders, activists, and participating NGOs as an antidote to the problems of corporate globalization, this project investigates such optimism ethnographically by examining whether Fair Trade is indeed effective for marginal producer groups, and if so, under what conditions this is the case. To do so, my dissertation compares how engagement with the Fair Trade movement has influenced the autonomy and livelihoods of two different groups of women working in the Fair Trade organic tea industry in Darjeeling, India--plantation workers and small scale farmers. I found that women tea farmers (independent farmers growing organic tea in their own land) tend to be more politically active than women plantation workers (wage laborers), even though the plantation workers have a long history of labor activism. My in-depth ethnographic research shows that women tea farmers are more effective in connecting their struggles against economic and cultural domination to the goals of the Fair Trade movement. They become more active in community affairs and undertake new business ventures by combating middlemen. In contrast, women plantation workers, despite their prior labor activism, are relatively incapable of mobilizing the Fair Trade movement to their own benefit, in spite of having their own informal networks. Key reasons for the difference include the different institutional structures of collective bargaining, access to resources (land), existing gender ideologies of work, and gendered community histories of political involvement in previous movements.Ph.D.Includes bibliographical references (p. 261-272)by Debarati Se
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