| 1. |
- Fatima, Iza, et al.
(författare)
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Individual and synergistic effects of different fertilizers and gibberellin on growth and morphology of chili seedlings
- 2024
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Ingår i: Ecological Frontiers. - 1872-2032. ; 44:2, s. 275-281
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Tidskriftsartikel (refereegranskat)abstract
- Gibberellins (GA3), as well as the basic elements phosphorus (P), nitrogen (N), and potassium (K), are crucial to the growth of chili. This study investigates the effect of different fertilizers and plant growth regulator on the growth and morphology of chili seedlings. Soil application of NPK, urea, SOP, and DAP (2.5 g/L) was applied during sowing, and N in two splits at sowing and after twenty days of sowing while foliar application of GA3 (50 mg/L) was applied after fifteen days of germination. The result of five seedlings' traits plant height (PH), plant girth (PG), plant spread (PS), number of leaves (NOF), and root length (RL) demonstrated a significant difference among growth-related traits in chili seedlings owing to the use of fertilizers, GA3, and their combinations. An optimum level of K and P alone or in combination with GA3 had a significant effect on all traits. PH was particularly influenced by the combination of GA3 with K and P whereas other traits like PG, NOF, PS, and RL are greatly influenced by the application of NPK, urea, SOP, DAP, and their combination with GA3. The study results showed an increase in chili seedlings' growth and morphology in response to various fertilizers and GA3.
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| 2. |
- Yong, Jean W.H
(författare)
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Ethological evidence of adaptive predation of oriental pied hornbill (Anthracoceros albirostris) on farmed swiftlet (Aerodramus spp.) in Kalabakan, Sabah, Malaysia
- 2022
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Ingår i: Acta Ecologica Sinica. - : Elsevier BV. - 1000-0933 .- 1872-2032. ; 42, s. 255-258
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Tidskriftsartikel (refereegranskat)abstract
- The Oriental Pied Hornbill is one of the ten species of hornbills found in Malaysia, and known to be an adaptable species with regard to utilising available food resources, although there is not much information about its foraging behaviour where its habitat overlap with human activities. We observed an opportunistic behaviour of a pair of Oriental Pied Hornbills preying on farmed edible bird nest swiftlets, in the state of Sabah, Malaysia as captured by closed circuit television utilised by an edible bird nest entrepreneur. A more detailed study could better assist and determine the frequency of this particular predation-prey interaction which may be a new cause of human-wildlife conflict in Malaysia and illuminating the diet diversity and adaptive ability of this hornbill species to seeking their dietary range.
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| 3. |
- Goop, Joel, 1986, et al.
(författare)
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The effect of high levels of solar generation on congestion in the European electricity transmission grid
- 2017
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Ingår i: Applied Energy. - : Elsevier BV. - 1872-9118 .- 0306-2619. ; 205, s. 1128-1140
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Tidskriftsartikel (refereegranskat)abstract
- The increasing levels of solar power affect the usage and development of electricity grids, both at local distribution level and with respect to potential congestion within the transmission grid. We use a cost-minimising investment model (ELIN) to determine the development of the European electricity generation system up to Year 2050, for two renewable-dominated scenarios: the Green Base scenario, with a Europe-wide, technology-neutral renewable certificate scheme; and the Net Metering scenario, with an additional net metering support scheme for solar power. The system compositions are extracted from the ELIN results for the years 2022 and 2032, and analysed in an hourly dispatch model (EPOD) to study the effects of solar power on marginal electricity costs and transmission congestion. From the results of the investment model, it is clear that the presence of a net metering subsidy scheme significantly affects both the pace at which solar power continues to expand and the geographical distribution of the new capacity. In the dispatch modelling, it can be seen that high penetration levels of solar power have a strong effect on the marginal costs of electricity, since production is concentrated around a few hours each day. At penetration levels of 20–30% of annual electricity demand, solar power production entails a predictable daily marginal cost difference between the solar peak and the evening price peak, which could make short-term storage competitive. Transmission congestion during summer is consistently higher in the systems from the Net Metering scenario than in those from the Green Base scenario, while the opposite is true during winter. Solar power production correlates strongly with congestion 6–9 h after the solar peak, whereas wind power correlates with congestion with respect to more slowly evolving and longer-term variations.
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