48 research outputs found
Feni closure dam, final design report
No full textOverview report of the final design of the Feni closure dam in Banglades
The Feni-river closure dam reviewed
No full textThe subject of this study is the Feni River Closure Dam in Bangladesh, which was designed in 1983 and subsequently built in 1985. In this final report the influence is analyzed of advanced design methods, which have become available since 1983, on the geometric dam profile and sea side slope protection. For this purpose the Feni dam was redesigned using these advanced design techniques. First the methods used for the original design were analyzed, with regard to the geometric profile and sea side slope protection. Subsequently the Feni dam was redesigned, using advanced design methods and considering the afore mentioned items. Contrary to the original design, the distinction between monsoon and cyclone conditions was made, because of the different character of both hydraulic situations. As a result of the closure of the Feni river by means of the Feni dam, a huge area downstream of the dam has accreted. The geometric redesign and structural redesign of the slope protection was carried out twice: With and without accretion influence. In this way, the influence of a hypothetical method to predict the morphological process, which was not available at the time the original design was originally made, is demonstrated. In order to derive the hydraulic loading conditions first the water levels were analyzed. The influence of the accretion process on the water levels near the dam was assumed to be zero. By analyzing gauge readings near the dam site, a probability distribution for water levels during monsoon conditions was derived. The probability distribution of water levels for cyclone conditions was obtained by means of a numerical storm surge model. After calibrating this model, 40 synthetic situations were derived, of which the probability of occurrence could be derived from the meteorological cyclone record since 1900. By computing the maximum water levels for these 40 situations and by means of relations between gauge stations the probability distribution for cyclone conditions near the Feni dam could be obtained. For the wave climate the influence of the accretion process is not negligible. As no wave observations have been carried out in the neighbourhood of the Feni dam, again a numerical model was used. By means of a wave hindcast model, the wave climate could be estimated during cyclones and monsoon winds and for the two cases: with or without accretion influence. It was found out that the wave height 3 years after closure was about 10 to 20% lower than at the time of closure for the same probability of exceedance. This effect is caused by the accretion of the fore shore.Hydraulic EngineeringCivil Engineering and Geoscience
Report on the construction of the Feni river closure dam
No full textDescription of the construction of the Feni closure dam in Banglades
Discourse Of Flowers In Contemporary Betawi Culture
Get PDFDiscourse about flowers means discourse with symbol. It was constructed to serve
the needs of a culture to be a symbol in a tradition. This tradition can gradually find
themselves in different modifications according reception times. In Betawi people for
example, the delivery of messages through the depth of flowers despite its meaning can
not be changed. Now, the original of a culture of the ritual to Betawi wedding ceremony
is rarely seen among the community. While the information and knowledge about
communication symbol of the flowers of Betawi culture is still not widely known.
Therefore, this research would like to explain in more detail about flowers and their
meanings of the communication symbol in Betawi culture, especially for the citizens of
Betawi Rawa Belong, Jakarta Barat. Flowers in question are Melati, Kenanga,
Cempaka, dan Kamboj
Study into multi-purpose operation of Feni reservoir, Bangladesh: Low head hydro power in an irrigation project
No full textThe subject is to find out how the surplus water of an irrigation project can be used for the production of hydropower. The irrigation project is the Muhuri irrigation project, lower reaches of the Feni river, near Sandwip island, Bangladesh. The objectives of the Muhuri project is to provide water in the dry season.Hydraulic EngineeringCivil Engineering and Geoscience
Control of Mooij correlations at the nanoscale in the disordered metallic Ta–nanoisland FeNi multilayers
No full text© 2020, The Author(s). Localisation phenomena in highly disordered metals close to the extreme conditions determined by the Mott-Ioffe-Regel (MIR) limit when the electron mean free path is approximately equal to the interatomic distance is a challenging problem. Here, to shed light on these localisation phenomena, we studied the dc transport and optical conductivity properties of nanoscaled multilayered films composed of disordered metallic Ta and magnetic FeNi nanoisland layers, where ferromagnetic FeNi nanoislands have giant magnetic moments of 103–105 Bohr magnetons (μB). In these multilayered structures, FeNi nanoisland giant magnetic moments are interacting due to the indirect exchange forces acting via the Ta electron subsystem. We discovered that the localisation phenomena in the disordered Ta layer lead to a decrease in the Drude contribution of free charge carriers and the appearance of the low-energy electronic excitations in the 1–2 eV spectral range characteristic of electronic correlations, which may accompany the formation of electronic inhomogeneities. From the consistent results of the dc transport and optical studies we found that with an increase in the FeNi layer thickness across the percolation threshold evolution from the superferromagnetic to ferromagnetic behaviour within the FeNi layer leads to the delocalisation of Ta electrons from the associated localised electronic states. On the contrary, we discovered that when the FeNi layer is discontinuous and represented by randomly distributed superparamagnetic FeNi nanoislands, the Ta layer normalized dc conductivity falls down below the MIR limit by about 60%. The discovered effect leading to the dc conductivity fall below the MIR limit can be associated with non-ergodicity and purely quantum (many-body) localisation phenomena, which need to be challenged further
MISTISME SIMBOLIK KARTU TAROT THE DEVIL (STUDI SEMIOTIK TAROT THE DEVIL DARI BUKU EASY TAROT LIDIA PRATIWI)
No full textNi3S2 nanostrips@FeNi-NiFe2O4 nanoparticles embedded in N-doped carbon microsphere: An improved electrocatalyst for oxygen evolution reaction
Get PDFThis is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recordThe designing and preparing of low-cost and easily available electrocatalyst for oxygen evolution reaction (OER) are crucial for many advanced energy technologies. Herein, the Ni3S2 nanostrips@FeNi-NiFe2O4 nanoparticles embedded in N-doped carbon (Ni3S2@FeNi-NiFe2O4/C) microspheres were synthesized as improved electrocatalyst for OER, using a facile heat-treatment method. The optimized Ni3S2@FeNi-NiFe2O4/C-3 sample exhibits enhanced electrocatalytic activity toward OER performance with an overpotential of 280 mV at 10 mA cm−2 and a small Tafel slope of 33.9 mV dec−1. Furthermore, Ni3S2@FeNi-NiFe2O4/C-3 composite shows good stability in alkaline media. The outstanding electrocatalytic OER performance of composites was attributed due to the synergetic effect between Ni3S2 nanostrips and FeNi-NiFe2O4 nanoparticles and it is believed that the heterointerfaces between them act as active centers for OER. Additionally, N-doped carbon prevents the aggregation of Ni3S2@FeNi-NiFe2O4 species and enhances the conductivity of composites during the OER process.Jiangsu University of Science and Technology, Chin
Remaking place: the social construction of a Geographical Indication for Feni
No full textA range of social movements mobilise around and seek to valorise ‘place-based’ imageries. There is, these movements argue, vitality in place. As anthropologists remind us, people continue to construct some form of boundaries around place, however permeable and transient those boundaries might be. In the context of global agrifood, a diversity of socially generated marks indicating conditions of origin have emerged that seek to speak to a range of moral economies. Within this constellation, Geographical Indication (GI) appears as a remarkable place-based intellectual property which the author appreciates as the juridical reification of a place-based stabilisation of cultural norms. However, rather than idealise GIs, the paper also probes a ‘politics in place’ through a fieldwork-based study of a recently acquired GI for Feni, a liquor distilled from either coconut or cashew apples. Juxtaposing observations of Feni distilling with the specifications that constitute the GI, the paper explains these differences in terms of the local social relations of power. The Goa government aligned itself with the recently established Feni Association, composed mainly of large distillers with bottling operations, to acquire the GI and was successful because of the complicity of the GI Registry office.
Remaking place : the social construction of a geographical indication for Feni
Get PDFA range of social movements mobilise around and seek to valorise ‘place-based’ imageries. There is, these movements argue, vitality in place. As anthropologists remind us, people continue to construct some form of boundaries around place, however permeable and transient those boundaries might be. In the context of global agrifood, a diversity of socially generated marks indicating conditions of origin have emerged that seek to speak to a range of moral economies. Within this constellation, Geographical Indication (GI) appears as a remarkable place-based intellectual property which the author appreciates as the juridical reification of a place-based stabilisation of cultural norms. However, rather than idealise GIs, the paper also probes a ‘politics in place’ through a fieldwork-based study of a recently acquired GI for Feni, a liquor distilled from either coconut or cashew apples. Juxtaposing observations of Feni distilling with the specifications that constitute the GI, the paper explains these differences in terms of the local social relations of power. The Goa government aligned itself with the recently established Feni Association, composed mainly of large distillers with bottling operations, to acquire the GI and was successful because of the complicity of the GI Registry office
