13,194 research outputs found
Fungal Wound Healing through Instantaneous Protoplasmic Gelation (Nguyen et. al)
No full textNguyen et. al., 2020.
This dataset contains raw microscopy and gel images, and raw data used to obtain the plots shown in the indicated figures
Is Vietnam economic paradigm sustainable for catch up
No full textIn the course of catching-up, Vietnam faces risks in two sectors: in real sector and in financial sector. In this paper we focus mostly on risk in real sector: the risk of getting stuck in middle-income trap. Vietnam is still far lagged behind her neighbors and much more further to developed economies. Does the economic paradigm that Vietnam follows in the last two decades allow her to catch up with those economies? We show that Vietnam’s economic growth in the last two decades based essentially on cheap but low skill labor and physical capital. Participation in international and regional production network probably lock Vietnam in low-tech position, hence low value added. If Vietnam keeps on growing in present paradigm, hardly can it catch up the neighboring economies.Flying geese paradigm, VAR models, TFP, Technological improvement, catch-up, Vietnam.
Die Gestalt von natürlichen Steinen und ihr Fallverhalten in Wasser
No full textResearch at IWAWI of TU Berlin focuses on rock placement in coastal engineering and port construction. During research work it was found that objective and descriptive shape classification of rocks was needed. The introduced method utilizes three independent parameters: size referred to by volume, shape according to Zingg and roundness according to Diepenbroek or by the degree of shape deviation of the rock\u92s equivalent ellipsoid of inertia. This classification is visualized in a three dimensional parameter space. Underwater falling properties of natural rocks were object of a systematic experimental examination. These properties are associated with the parameter space. The digital visualization of the examined rocks and the experimental results on properties and motion are presented in a PC-based interactive information system RockDataBase. The user can query information on any rock by using RockDataBase as a modern form of comparison table to acquire shape properties, hydraulic properties and a visualization of its under water motion
Watertovenaars: Delftse ideeën voor nog 200 jaar Rijkswaterstaat
No full textEen bundel artikelen met inspiratie voor Rijkswaterstaat voor de ontwikkeling in de volgende 200 jaar. Watertovenaar of tovenaarsleerling? (K. d'Angremond, P. Huisman en G.I. Schiereek) De oudste deltawerken: dammen en duikers uit het begin van de jaartelling (T. de Ridder) Een erfenis uit de Bataafse periode (W.M. de Jong) Wat eerst: wonen, water, wegen of welvaart? (T.M. de Jong) Een nieuwe rol voor de waterstaatsingenieur (F.M. Sanders) De terugkeer van de stedenbouwkundige discipline (V.J. Meyer Water (P. Huisman, K. d'Angremond en G.J. Schiereek) Dynamische buffers in autosnelwegen (D. Westland en P.H.L. Bovy) Op de automatische piloot door de Randstad? (R. van der Heijden, V. Marchau, E. Molin en K. van Wees) Niet bruggen bouwen, maar zelf brug zijn (B. Enserink, M.P.M. van der Ploeg, WAH. Thissen en G.J. de Vreede) Nederland als vervoersemplacement? (M.P.C. Weijnen, W.A.H. Thissen en E.F. ten Heuvelhof) Immobilisatie van gevaarlijk afval (Ch.F.Hendriks) Dubbel verduurzamen van wegconstructies (A.A.A. Molenaar) Innovatie van de geometrische infrastructuur (P.J.G.Teunissen) Radarhoogtemetingen en de (voorname) rol van Delft (M. Naeije) Een hoog(water)standje (T. Rientjes, C. van den Akker en P. van der Veer) Naar één beslismodel voor de veiligheid (J.K. Vrijling en J. Stoop) De betrouwbaarheid van dijken (A. Verruijt) Windgolven, een fascinerend fenomeen (L.H. Holthuijsen en J.A. Battjes) Mijn droom: het railvaartuig (B. Boon) Een waterfilm in plaats van wielen (A. van Beek) Uren worden minuten (E.A.H. Vollebregt, H. Jansen en M.R.T. Roest) Een kwestie van schuiven (R.Brouwer, A.Hof en J. Schuurmans) Energie door vergisting van slib (M.S.M. letten en M.C.M. van Loosdrecht) Nóg een poldermodel: hoge-sterkte beton (J.C. Walraven) Atollen voor de Noordzeekust (J. Kristinsson) Van maker naar regisseur (H.A.J. de Ridder
Untersuchungen zum Fallverhalten würfelförmiger Einzelkörper in Wasser
No full textThe underwater fall of cubes (as reference bodies for sharp edged quarry rock material) of different sizes and densities has . been examined. The experimental study has been carried out by using a shaft (diameter: 5 m) filled with water. Due to rotary motion (Magnus' effect), the trajectories of such cubes deviate from vertical lines. The direction of such deviation cannot be predicted, because the axis of rotation changes irregularly during the fall. The cubes reach their settling velocities very fast. The observed settling velocities are in accordance with the values obtained from the general quadratic law for resistance. The drag coefficient Cw is 0,8 - independent of the size and density of the cube - referred to the maximum projection area. Since the effected projection area changes during a cube's fall, the instantaneous velocity of this object oscillates. The oscillation can sometimes be as large as 25 % of the calculated mean value
A Review on Automatic Generation of Architectural Space Layouts with Energy Performance Optimization
No full textGreen Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Climate Design and SustainabilityDesign InformaticsBuilding ServicesArchitectural Engineering +Technolog
Tuin Park Landschap: Documentatie Minor Landschapsarchitectuur 2009
No full textDit boek geeft een overzicht van analyses, ontwerpen en essays van studenten in de Minor Landschapsarchitectuur die aan de Faculteit Bouwkunde TU Delft in het najaar semester van 2009 voor de tweede keer werd gegeven onder begeleiding van de docenten Daniel Jauslin en Denise Piccinini. De minor is een nieuwe vorm van onderwijs waarin studenten uit verschillende faculteiten en universiteiten een totaal ander vak kunnen volgen buiten of binnen de grenzen van hun eigen faculteit. We hanteren voor de analyse- en ontwerpopgave drie landschaparchitectonische archetypes; tuin, park, landschap. De rivier de Rotte door Rotterdam is het verbindend landschappelijk element tussen stad en land en tussen de schalen - van klein naar groot. De driedelige thematieken, schalen en de keuze voor de Rotte als verbindend element waren de belangrijkste vernieuwingen in deze tweede lichting van de minor. De structuur tuin, park, landschap wordt daarom ook voor dit boek aangehouden met de Rotte als orientatie. Overal zijn we enthousiasme tegen gekomen voor ons vak maar ook voor het feit dat dit vak vanuit te TU Delft ontwikkeld wordt. Dit boek is daarom ook als dank aan velen bedoeld. Door de bestaande landschappen van de Faculteit Bouwkunde waait een vernieuwende wind. Wij hopen dat deze documentatie helpt om deze vernieuwing verder op te bouwen en velen ervan te overtuigen zich in de Landschapsarchitectuur te verdiepen.UrbanismArchitectur
Hydraulic performance, wave loading and response of Elastocoast revetments and their foundation - a large scale model study -
No full textELASTOCOAST revetments are highly porous structures made of crushed stones which are durably and elastically bonded by Polyurethane (PU). To improve the understanding of the physical processes involved in the wave-structure-foundation interaction and to develop prediction formulae for both hydraulic performance and wave loading more than 75 large-scale model tests using both regular and irregular waves were performed. Three ELASTOCOAST revetment alternatives with the same slope (1:3) and the same revetment thickness (0.20 m) but with different thicknesses of the underlying filter layer (0.00 m, 0.10 m and 0.20 m for Model Alternatives A, B and C, respectively) were tested. More than 85 measuring devices synchronously connected to two video cameras were used. Prediction formulae are developed for wave reflection, wave run-up and run-down as a function of the surf similarity parameter which illustrate the advantage of ELASTOCOAST revetments as compared to conventional revetments. For instance, more than 25% less wave runup may result on comparison to smooth impermeable revetments. Using a surf similarity-based wave load classification as well as a systematic parametrization in both time and space, prediction formulae are also developed for both impact loads on and just beneath the revetment. These include the peak pressure pmax, its location in relation to still water level zpmax, the spatial pressure distribution and the time related parameters (rise time and total load duration). Prediction formulae for the wave-induced pore pressure in the sand core beneath the revetment are also provided, including the maximum pressure at the upper boundary of the sand layer and its development in deeper layers. Formulae are also proposed for the flexural displacement ä of the ELASTOCOAST revetment, showing that for impact load much smaller displacements would result than for non-impact load and that ä linearly increases with peak pressure pmax for a given revetment thickness. Finally, a stability analysis of Model Alternative A is performed on basis of the results of the measurements and the simultaneously recorded videos. The results illustrate why Model Alternative failed due to local transient soil liquefaction while Model Alternative B tested synchronously under the same wave conditions did not fail.LWI098
Project Hue: Report and field study on the water related problems and solutions in and around the Cau Hai lagoon and the Tu Hien inlet, Vietnam
No full textThe Tam Giang-Cau Hai lagoon system, lying in the Thua Thien-Hue province in central Vietnam, is affected by a tropical monsoon climate. This among others is the reason the Cau Hai Lagoon area has a long history of floods and other water related problems. Inhabitants are very dependent on the lagoon, as the main sources of income of people living in the region are fishing, agri- and aquaculture. The project goal has been formulated as follows: Finding an economic as well as technical feasible solution to reduce the water related problems, specifically navigability, salt intrusion and floods, in and around the Cau Hai Lagoon and the Tu Hien inlet and thereby improving the economic development of the region. Concerning flood risk, navigability and salt intrusion the inlet stability and size are important aspects. Using an echo sounder the bathymetry of the inlet has been measured. The measured size of the inlet was one of the input parameters for the hydraulic model that has been set up. This basic model of the Cau Hai basin system was made to test some alternative solutions for the Tu Hien inlet. The different solutions were simulated for five different scenarios. These scenarios include average dry season conditions, average wet season conditions and multiple extreme events. The output of the model for the different alternatives was used to rate the alternatives for a couple of criteria in a Multi Criteria Analysis. Other criteria of the MCA are qualitatively rated. The most promising alternative proved to be the one including a jetty at the northern side of the Tu Hien inlet in combination with a bank protection at the other side. In this way a large part of the littoral drift is blocked, enlarging the equilibrium cross-section of the inlet. This in turn results in a better flood evacuation capacity, navigability and water quality in the lagoon. For both mentioned elements a preliminary technical design is made, resulting in the stone class needed for the armour layers, dimensions of the toe and characteristics of the filter.Hydraulic EngineeringCivil Engineering and Geoscience
Sargassum siliquosum J. Agardh. A. Habit 1848
No full textSargassum siliquosum J. Agardh (1848: 316) (Fig. 6A–F) Thallus up to 60 cm high, attached by discoidal holdfast, 1 cm in diameter. Main axes terete, smooth, 0.15 cm wide, producing 3–5 primary branches. Primary branches cylindrical, smooth, terete 2–3 cm at base. Lateral branches numerous, alternate at an interval of 3–4 cm. Basal leaves thick, large, oval, 2.5–5.0 cm long, 0.3–1.0 cm wide; upper leaves 1.5– 3 cm long and up to 0.6 cm wide, with shallowly dentate margin. Midrip conspicuous but fading towards the apex. Cryptostomata irregularly scattered. Vesicles oval or lanceolate, about 0.3–0.5 cm long and up to 0.2 cm wide, with very short flat petioles, mucronate. Plant monoecious. Receptacles cylindrical, smooth, simple to once furcate, about 2 cm long or more. Maturation in spring in the southwestern Vietnam. Habitat:— Sargassum siliquosum grows on rock and dead coral in the lower intertidal zone. Specimens examined:— Duong Dong, Phu Quoc, lower intertidal, 01 Mar. 2018 V. T . Nguyen, S.M. Boo (NVT2043, NVT2044, NVT2045), Duong Dong, lower intertidal, 16 Feb. 2019, V. T . Nguyen (NVT2510, NVT2511). Taxonomic remarks: — Sargassum siliquosum is distinguished from other species by having numerous small vesicles, secondary axis somewhat compressed and smooth at lower part. The syntype localities of this species are Jakarta in Indonesia and Singapore (Silva et al. 1996). The cylindrical and warty axes described by Nguyen (2007) were not observed in specimens from the Phu Quoc Island. Primary branches are terete, 2–3 cm at base, basal leaves are longer and bigger than those positioned at the lateral branches. Leaves of Vietnamese specimens are shorter than those from China (Tseng & Lu 1992). Vesicles are oval to lanceolate, sharply pointed or rounded, 0.2 cm in length, as Chinese plants (Tseng & Lu 1992). Identification of species from southwestern Vietnam: In the present study, eleven species of Sargassum including five species described above were collected and examined (Table S1). Six species commonly occur along the east coast of Vietnam, and their morphologies and descriptions have been introduced by my thesis and other reports (Pham 1969, Nguyen 2007, Nguyen 2014, Nguyen 2020, Nguyen & Boo 2020). Based on morphological descriptions and illustrations, a key for identification of species from southwestern Vietnam is given below.Published as part of Tu, Nguyen Van, 2023, Morpho-anatomical study of Sargassum (Fucales, Phaeophyceae) diversity reveals noteworthy collections and range extensions from southwestern Vietnam, pp. 281-290 in Phytotaxa 600 (5) on pages 286-287, DOI: 10.11646/phytotaxa.600.5.3, http://zenodo.org/record/812937
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