5,498 research outputs found

    Women Farmer's Perspectives on Climate Change and Intention to Adopt Sustainable Agriculture

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    Purpose: This study highlights the significance of sustainable agriculture and delves into the views of women farmers on climate change and their aspirations to adopt sustainable farming practices. Ā  Theoretical framework: The opportunity comes in creating fresh methods, abilities, and interventions that foster innovation. The challenge is figuring out ways to mitigate its effects and search for alternatives. Women farmers in particular need creative behaviour and decision-making power to adapt to climate change since they face resource, cultural, societal, and personal constraints. Ā  Design/methodology/approach: To better understand how farmers think about climate change, sustainable agriculture, and related topics, we conducted structured, open-ended interviews with them. Twenty-six female farmers in the Himalayan state of Sikkim were chosen using convenience sampling. Qualitative data analysis tools were used to analyse the interview data. A web-based tool was used for sentiment analysis, which also contributed to identifying the themes. Ā  Findings: Positive sentiments were identified in the use of organic farming for sustainable agriculture. Most respondents believed that government support is required for large-scale use of organic farming. The respondents also acknowledged the positive effects of vermicomposting. The analysis showed that vermicomposting provides good health and growth to plants and crops. Resilient crop selection was identified as a method that assists in standing against weather fluctuations. Ā  Research, Practical & Social Implications: Crop selection based on seasons is vital for good yields. The thematic analysis also presented a positive response toward applying crop rotation, intercropping, and companion cropping. Compared to women with lower decision-making and inventive skills, women with these traits embraced more sustainable agricultural practises. Ā  Originality/Value: Giving women in agriculture greater autonomy will thereby enhance the adoption of sustainable agricultural techniques, so enhancing food security and reducing climate change. This outcome will help achieve the Sustainable Development Goals of gender equality and climate action set by the United Nations

    Near-IR studies of recurrent nova V745 Scorpii during its 2014 outburst

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    The recurrent nova (RN) V745 Scorpii underwent its third known outburst on 2014 February 6. Infrared monitoring of the eruption on an almost daily basis, starting from 1.3d after discovery, shows the emergence of a powerful blast wave generated by the high velocity nova ejecta exceeding 4000 kmsāˆ’1^{-1} plowing into its surrounding environment. The temperature of the shocked gas is raised to a high value exceeding 108^{8}K immediately after outburst commencement. The energetics of the outburst clearly surpass those of similar symbiotic systems like RS Oph and V407 Cyg which have giant secondaries. The shock does not show a free-expansion stage but rather shows a decelerative Sedov-Taylor phase from the beginning. Such strong shockfronts are known to be sites for Ī³\gamma ray generation. V745 Sco is the latest nova, apart from five other known novae, to show Ī³\gamma ray emission. It may be an important testbed to resolve the crucial question whether all novae are generically Ī³\gamma ray emitters by virtue of having a circumbinary reservoir of material that is shocked by the ejecta rather than Ī³\gamma ray generation being restricted to only symbiotic systems with a shocked red giant (RG) wind. The lack of a free-expansion stage favors V745 Sco to have a density enhancement around the white dwarf (WD), above that contributed by a RG wind. Our analysis also suggests that the WD in V745 Sco is very massive and a potential progenitor for a future SN Ia explosion.Comment: To appear in ApJ (Letters

    Chirped pulse Raman amplification in plasma

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    Raman amplification in plasma has been proposed to be a promising method of amplifying short radiation pulses. Here, we investigate chirped pulse Raman amplification (CPRA) where the pump pulse is chirped and leads to spatiotemporal distributed gain, which exhibits superradiant scaling in the linear regime, usually associated with the nonlinear pump depletion and Compton amplification regimes. CPRA has the potential to serve as a high-efficiency high-fidelity amplifier/compressor stage

    Need of luteinizing hormone for early pregnancy in the golden hamster (Mesocricetus auratus)

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    Administration of LH antiserum to intact pregnant hamsters on any day from Days 6 to 11 of pregnancy resulted in termination of gestation. Following LH antiserum injection, the ovarian weights were markedly reduced

    Multiscale Analysis of Spreading in a Large Communication Network

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    In temporal networks, both the topology of the underlying network and the timings of interaction events can be crucial in determining how some dynamic process mediated by the network unfolds. We have explored the limiting case of the speed of spreading in the SI model, set up such that an event between an infectious and susceptible individual always transmits the infection. The speed of this process sets an upper bound for the speed of any dynamic process that is mediated through the interaction events of the network. With the help of temporal networks derived from large scale time-stamped data on mobile phone calls, we extend earlier results that point out the slowing-down effects of burstiness and temporal inhomogeneities. In such networks, links are not permanently active, but dynamic processes are mediated by recurrent events taking place on the links at specific points in time. We perform a multi-scale analysis and pinpoint the importance of the timings of event sequences on individual links, their correlations with neighboring sequences, and the temporal pathways taken by the network-scale spreading process. This is achieved by studying empirically and analytically different characteristic relay times of links, relevant to the respective scales, and a set of temporal reference models that allow for removing selected time-domain correlations one by one

    Localized magnetoplasmon modes arising from broken translational symmetry in semiconductor superlattices

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    The electromagnetic propagator associated with the localized collective magnetoplasmon excitations in a semiconductor superlattice with broken translational symmetry, is calculated analytically within linear response theory. We discuss the properties of these collective excitations in both radiative and non-radiative regimes of the electromagnetic spectra. We find that low frequency retarded modes arise when the surface density of carriers at the symmetry breaking layer is lower than the density at the remaining layers. Otherwise a doublet of localized, high-frequency magnetoplasmon-like modes occurs.Comment: Revtex file + separate pdf figure

    A brief review of the impact of silver nanoparticles on agriculture and certain biological properties: A case study

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    Nanotechnology is progressively becoming a popular field of research because it has been successful in changing our agricultural and food systems. According to research published by the UNFAO, agriculture as well as its derivatives would be in high demand sooner or later, owing to nutritional changes. Nanoparticles have been reported to be used in an agricultural sector, because of its capacity to encourage crop growth and yield. Among metal nanoparticles, Silver Nanoparticles (AgNPs) are attracting a lot of attention. We have highlighted some of the agricultural uses of AgNPs, which include pest management, plant disease detection, crop enhancement, and crop production

    Assessment of the effectiveness of head only and back-of-the-head electrical stunning of chickens

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    The study assesses the effectiveness of reversible head-only and back-of-the-head electrical stunning of chickens using 130ā€“950 mA per bird at 50 Hz AC

    Fractional flow reserve versus angiography in guiding management to optimize outcomes in nonā€“ST-elevation myocardial infarction (FAMOUS-NSTEMI): rationale and design of a randomized controlled clinical trial

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    <p>Background: In patients with acute nonā€“ST-elevation myocardial infarction (NSTEMI), coronary arteriography is usually recommended; but visual interpretation of the angiogram is subjective. We hypothesized that functional assessment of coronary stenosis severity with a pressure-sensitive guide wire (fractional flow reserve [FFR]) would have additive diagnostic, clinical, and health economic utility as compared with angiography-guided standard care.</p> <p>Methods and design: A prospective multicenter parallel-group 1:1 randomized controlled superiority trial in 350 NSTEMI patients with ā‰„1 coronary stenosis ā‰„30% severity (threshold for FFR measurement) will be conducted. Patients will be randomized immediately after coronary angiography to the FFR-guided group or angiography-guided group. All patients will then undergo FFR measurement in all vessels with a coronary stenosis ā‰„30% severity including culprit and nonculprit lesions. Fractional flow reserve will be disclosed to guide treatment in the FFR-guided group but not disclosed in the ā€œangiography-guidedā€ group. In the FFR-guided group, an FFR ā‰¤0.80 will be an indication for revascularization by percutaneous coronary intervention or coronary artery bypass surgery, as appropriate. The primary outcome is the between-group difference in the proportion of patients allocated to medical management only compared with revascularization. Secondary outcomes include the occurrence of cardiac death or hospitalization for myocardial infarction or heart failure, quality of life, and health care costs. The minimum and average follow-up periods for the primary analysis are 6 and 18 months, respectively.</p> <p>Conclusions: Our developmental clinical trial will address the feasibility of FFR measurement in NSTEMI and the influence of FFR disclosure on treatment decisions and health and economic outcomes.</p&gt
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