Effect of spacings and nitrogen levels on herb and oil yield oil concentration and composition in three selections of Cymbopogon jwarancusa (Jones) Schultz

The performance of three selections of Cymbopogon jwarancusa (SL-7822, SL-7869 and SL-7896) was studied under five spacings and two levels of nitrogen. Though herbage and oil yield was higher in 4.01 m' stand density (50 x 50 cm spacing), 1l.l/m' (30 x 30 cm spacing) stand density was preferred as the projected yield per ha was higher in the latter. Increase in nitrogen from 200 to 300 kg/ba did not result in higher herbage and oil concentration in the leaves. The composition of oil was also not affected by spacings or nitrogen levels. &nbsp

Effect of spacings and nitrogen levels on herb and oil yield oil concentration and composition in three selections of Cymbopogon jwarancusa (Jones) Schultz

The performance of three selections of Cymbopogon jwarancusa (SL-7822, SL-7869 and SL-7896) was studied under five spacings and two levels of nitrogen. Though herbage and oil yield was higher in 4.01 m' stand density (50 x 50 cm spacing), 1l.l/m' (30 x 30 cm spacing) stand density was preferred as the projected yield per ha was higher in the latter. Increase in nitrogen from 200 to 300 kg/ba did not result in higher herbage and oil concentration in the leaves. The composition of oil was also not affected by spacings or nitrogen levels. &nbsp

Fluid Ontologies in the Search for MH370

This paper gives an account of the disappearance of Malaysian Airways Flight MH370 into the southern Indian Ocean in March 2014 and analyses the rare glimpses into remote ocean space this incident opened up. It follows the tenuous clues as to where the aeroplane might have come to rest after it disappeared from radar screens – seven satellite pings, hundreds of pieces of floating debris and six underwater sonic recordings – as ways of entering into and thinking about ocean space. The paper pays attention to and analyses this space on three registers – first, as a fluid, more-than-human materiality with particular properties and agencies; second, as a synthetic situation, a composite of informational bits and pieces scopically articulated and augmented; and third, as geopolitics, delineated by the protocols of international search and rescue. On all three registers – as matter, as data and as law – the ocean is shown to be ontologically fluid, a world defined by movement, flow and flux, posing intractable difficulties for human interactions with it

Community health worker training on older adults: A qualitative needs assessment

Background: Community health workers (CHWs) are frontline public health personnel who serve as liaisons between vulnerable patient populations and the healthcare system. They are instrumental in health promotion and education for urban-dwelling older adults. However, no research exists on training that CHWs receive on age-friendly health care. This article explores CHW education on the 4Ms of an Age-Friendly Health System and identifies areas where additional training may be necessary. Methods: As part of a two-pronged qualitative needs assessment, four focus groups were held with a total of 17 CHWs and semistructured interviews were conducted with 10 clinicians, including both healthcare providers and social workers. Focus group and interview transcripts were then analyzed for major themes in Dedoose, a qualitative coding software. Results: Clinicians most often identified Mentation and Mobility as areas where CHWs can have the greatest impact. Correspondingly, CHWs felt under-equipped to assist patients in these areas and expressed strong interest in additional training. In general, CHWs and clinicians agreed that Medications and What Matters do not fall under CHW scope of practice. Conclusions: Our findings confirm the critical role that CHWs can play in promoting the health and well-being of urban-dwelling older adults. However, we also demonstrate that many CHWs lack adequate training in age-friendly care. To meet the social and medical needs of a rapidly aging US population, there is a pertinent need to develop a novel community health worker training curriculum on Mentation and Mobility.</p

Effect of spacings and nitrogen levels on herb and oil yield oil concentration and composition in three selections of Cymbopogon jwarancusa (Jones) Schultz

The performance of three selections of Cymbopogon jwarancusa (SL-7822, SL-7869 and SL-7896) was studied under five spacings and two levels of nitrogen. Though herbage and oil yield was higher in 4.01 m' stand density (50 x 50 cm spacing), 1l.l/m' (30 x 30 cm spacing) stand density was preferred as the projected yield per ha was higher in the latter. Increase in nitrogen from 200 to 300 kg/ba did not result in higher herbage and oil concentration in the leaves. The composition of oil was also not affected by spacings or nitrogen levels. &nbsp

Eulerian Simulation of Multiphase Flows for Flotation

In the mineral industry, flotation is of great significance for the beneficiation of raw materials. It is conventionally designed at a small scale in the lab and then scaled up to fit industrial purposes. In the upscaling and optimizing of flotation processes, knowledge of local multiphase flow variables is very valuable. Computational Fluid Dynamics (CFD) simulations in the Eulerian multi-fluid approach offer insights into such multiphase flows with the advantage of reasonable computation times. However, several gaps in their current state-of-the-art appear in the context of flotation. Most notably: (i) The hydrodynamic submodels for gas-liquid flows are developed for single bubbles, and therefore require validation and consideration of interactions at higher gas holdups. (ii) A baseline hydrodynamic model for gas-solid-liquid flows has not been established yet. (iii) Bubble-particle aggregates and flotation kinetic models need to be integrated into the simulation. In this thesis, these gaps are addressed sequentially in simple configurations that are more amenable to analysis than full-scale flotation cells. As will be shown, the hydrodynamic submodels for gas-liquid flows provide sufficiently accurate predictions up to medium gas holdups, primarily due to the effect of mixture density on the pressure gradient and relative velocity. At higher holdups, the swarm effect becomes relevant, for which the literature unfortunately so far offers only inconclusive models. Furthermore, the bubble size has a significant impact on the liquid flow. For large bubbles with a negative lift coefficient, the flow becomes unstable and the gas holdup decreases as observed experimentally. The absence of bubble-induced turbulence and large gas fluxes also induce flow instability, but an appropriate validation of their mechanisms requires more elaborate models. For gas-solid-liquid flows, divergent hydrodynamic models were used in previous studies offering little guidance. This situation is exacerbated by a scarcity of potential validation data in the literature. The attempt to nonetheless establish a baseline hydrodynamic model for such flows demonstrates the added complexity due to the presence of a third phase. A fundamental understanding of this interaction is still largely lacking. Finally, a novel framework is developed to include flotation kinetic models for the bubble-particle attachment. For the first time, bubble-particle aggregates appear explicitly in the simulation. The implications of increasing aggregate density with particle loading can readily be studied. At the same time, the necessity to develop suitable hydrodynamic models for the aggregates becomes evident. The work presented in this thesis has made contributions to advancing the state-of-the-art in CFD simulation of multiphase flows for flotation. Although the hydrodynamic model for gas-solid-liquid flows does not perform very well under conditions of high gas flow rates and solid fractions, the present investigation guides future efforts towards further necessary research to develop more robust closure models for such conditions and to provide comprehensive validation data. Moreover, the flotation framework enables the inclusion of a flotation kinetic model and contributes to the prediction accuracy of the simulation by capturing the impact of attachment on the buoyancy of bubble-particle aggregates. Future research should primarily focus on two key areas. The first is the development of closure models for bubble-particle aggregates, since particle attachment is known to impact the flow dynamics of the aggregates. The second is extending the framework, for example by incorporating more solid phases to account for gangue particles or cover a broad range of particle size distribution, and applying the framework to flow configurations that are more representative of flotation applications

Eulerian Simulation of Multiphase Flows for Flotation

In the mineral industry, flotation is of great significance for the beneficiation of raw materials. It is conventionally designed at a small scale in the lab and then scaled up to fit industrial purposes. In the upscaling and optimizing of flotation processes, knowledge of local multiphase flow variables is very valuable. Computational Fluid Dynamics (CFD) simulations in the Eulerian multi-fluid approach offer insights into such multiphase flows with the advantage of reasonable computation times. However, several gaps in their current state-of-the-art appear in the context of flotation. Most notably: (i) The hydrodynamic submodels for gas-liquid flows are developed for single bubbles, and therefore require validation and consideration of interactions at higher gas holdups. (ii) A baseline hydrodynamic model for gas-solid-liquid flows has not been established yet. (iii) Bubble-particle aggregates and flotation kinetic models need to be integrated into the simulation. In this thesis, these gaps are addressed sequentially in simple configurations that are more amenable to analysis than full-scale flotation cells. As will be shown, the hydrodynamic submodels for gas-liquid flows provide sufficiently accurate predictions up to medium gas holdups, primarily due to the effect of mixture density on the pressure gradient and relative velocity. At higher holdups, the swarm effect becomes relevant, for which the literature unfortunately so far offers only inconclusive models. Furthermore, the bubble size has a significant impact on the liquid flow. For large bubbles with a negative lift coefficient, the flow becomes unstable and the gas holdup decreases as observed experimentally. The absence of bubble-induced turbulence and large gas fluxes also induce flow instability, but an appropriate validation of their mechanisms requires more elaborate models. For gas-solid-liquid flows, divergent hydrodynamic models were used in previous studies offering little guidance. This situation is exacerbated by a scarcity of potential validation data in the literature. The attempt to nonetheless establish a baseline hydrodynamic model for such flows demonstrates the added complexity due to the presence of a third phase. A fundamental understanding of this interaction is still largely lacking. Finally, a novel framework is developed to include flotation kinetic models for the bubble-particle attachment. For the first time, bubble-particle aggregates appear explicitly in the simulation. The implications of increasing aggregate density with particle loading can readily be studied. At the same time, the necessity to develop suitable hydrodynamic models for the aggregates becomes evident. The work presented in this thesis has made contributions to advancing the state-of-the-art in CFD simulation of multiphase flows for flotation. Although the hydrodynamic model for gas-solid-liquid flows does not perform very well under conditions of high gas flow rates and solid fractions, the present investigation guides future efforts towards further necessary research to develop more robust closure models for such conditions and to provide comprehensive validation data. Moreover, the flotation framework enables the inclusion of a flotation kinetic model and contributes to the prediction accuracy of the simulation by capturing the impact of attachment on the buoyancy of bubble-particle aggregates. Future research should primarily focus on two key areas. The first is the development of closure models for bubble-particle aggregates, since particle attachment is known to impact the flow dynamics of the aggregates. The second is extending the framework, for example by incorporating more solid phases to account for gangue particles or cover a broad range of particle size distribution, and applying the framework to flow configurations that are more representative of flotation applications

OMVÅRDNADSÅTGÄRDER SOM FRÄMJAR PATIENTERS ÅTERHÄMTNING EFTER STROKE

Background: Stroke is a common disease that is increasing worldwide. People who have suffered a stroke can also suffer from complications after the disease. Life can be different after a stroke and the emotions associated with this can be difficult to deal with. Nurses are professionals and have a legal duty to treat and prevent disease. Purpose: The aim is to describe nursing interventions that promote patient recovery after stroke. Method: A literature review consisting of a descriptive phenomenon of ten health science articles contained qualitative and quantitative was analyzed. Results: Three themes emerged. First theme: Nursing interventions that promote patient function recovery. In the second theme: Nursing interventions that promote patients' emotional recovery after stroke. In the third theme: The importance of the nurse in treatment. Conclusion: There is to describe nursing interventions that promote patient recovery after stroke. This study can also contribute with increased knowledge for nurses who work with patients who have suffered a stroke.