1,586 research outputs found
Typescript Bill H.R. 20819 for the Construction of Roads and other Permanent Improvements
No full textTypescript draft of Bill H.R. 20819 to provide for the construction of roads and other permanent improvements at or near the Grand Canyon. The sum of $110,000 dollars is to be appropriated for the project under the direction of the Secretary of Agriculture
A hydraulic mixing-cell method to quantify the groundwater component of streamflow within spatially distributed fully integrated surface water-groundwater flow models
No full textThe complexity of available hydrological models continues to increase, with fully integrated surface water-groundwater flow and transport models now available. Nevertheless, an accurate quantification of streamflow generation mechanisms within these models is not yet possible. For example, such models do not report the groundwater component of streamflow at a particular point along the stream. Instead, the groundwater component of streamflow is approximated either from tracer transport simulations or by the sum of exchange fluxes between the surface and the subsurface along the river. In this study, a hydraulic mixing-cell (HMC) method is developed and tested that allows to accurately determine the groundwater component of streamflow by using only the flow solution from fully integrated surface water-groundwater flow models. By using the HMC method, the groundwater component of streamflow can be extracted accurately at any point along a stream provided the subsurface/surface exchanges along the stream are calculated by the model. A key advantage of the HMC method is that only hydraulic information is used, thus the simulation of tracer transport is not required. Two numerical experiments are presented, the first to test the HMC method and the second to demonstrate that it quantifies the groundwater component of streamflow accurately. © 2011 Elsevier Ltd.D. Partington, P. Brunner, C.T. Simmons, R. Therrien, A.D. Werner, G.C. Dandy, H.R. Maie
Innovative Ways of Dealing with Existing Problems: How to reliably Assess the Cause of Damage of Masonry Structures in an Area with Man-induced Earthquakes?
No full textGroningen, a province in the northern part of the Netherlands, suffers from earthquakes because of gas drilling. The residential building stock in Groningen was not designed for these loads. Over the years a lot of smaller and larger damage has developed, possibly - but not necessarily - caused by the effects of gas drilling. Delft University of Technology was asked by the Dutch government to come up with a method to reliably assess the cause of damage of masonry structures in Groningen. This paper discusses the developed approach for reliably assessing the causes of failure of masonry structures in earthquake-prone areas and the way innovative monitoring techniques were applied.Green 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.Applied Mechanic
Efficient material use through smart flexible formwork method
No full textConcrete is an excellent material for application in free-form architecture as a result of its initial fluid state. Double-curved building shapes have been realized in various fibre-reinforced mixtures, using advanced CNC-milled formwork systems. However, a substantial reduction of material use is still possible on two ends: by using a flexible formwork very thin and structurally efficient elements can be manufactured, reinforced with fibres or textiles. Moreover, the reusability of the flexible formwork considerably limits the waste material that was always remaining after the use of milled formwork systems. This paper discusses experiments with both formwork and mixtures in a PhD-study of the first author, demonstrating the ecological potential of this innovative production method.Structural EngineeringCivil Engineering and Geoscience
Endothelin inhibition as a biologic target for treating hypertension.
No full textEndothelin, a 21-amino-acid peptide, binds to a specific receptor on vascular smooth muscle cells, thereby inducing vasoconstriction. Although plasma levels are not consistently elevated in hypertension, there is evidence that endothelin has an important role in its pathogenesis. Administration of endothelin antagonists has lowered blood pressure and reduced end-organ damage in some animal models. It has also reduced the cross-sectional area of neointima due both to hypertension and vascular injury. Coadministration of endothelin and angiotensin II to rats produced a synergistic hypertensive effect. Similarly, coadministration of an endothelin antagonist with an angiotensin converting enzyme inhibitor resulted in a synergistic lowering of blood pressure. Several preliminary clinical studies have been done. The endothelin antagonist bosentan has decreased vascular resistance and blood pressure and increased cardiac index in patients with congestive heart failure. Plasma endothelin levels are elevated in the acute phase of myocardial infarction and in chronic heart failure. The magnitude of this increase, measured 3 days after patients experienced myocardial infarction, had a significance at least equal to known risk factors in predicting 1 year survival. Thus, there are reasons to believe that endothelin antagonists may become a useful tool in the management of various cardiovascular disorders
Cosmetic Testing on Animals
No full textPushing the Humane Cosmetics Act (H.R.4148) both to Remove Harmful Ingredients from Cosmetics and Promote the Health and Welfare of AnimalsFall 2014Accompanied by video fil
Bundeling van zonlicht door gekromde gevels: Een concreet probleemgeval onderzocht met parametrische tools, simulatie en controlemetingen
No full textWat te doen als je prachtige gekromde glazen gevel onverwacht als vergrootglas blijkt te werken? Het fenomeen, dat al enigszins bekend was van de beruchte “Walkie Talkie” in Londen, is al eens eerder beschreven in Bouwfysica in 2018 [1]. Helaas kon dat artikel niet voorkomen dat ook in Nederland dit probleem vorig najaar plotseling optrad bij een nieuw gebouw dat op het punt stond opgeleverd te worden. Smeltende auto-onderdelen op het ondergelegen parkeerterrein, mogelijk gevaar voor bezoekers en een ongeruste opdrachtgever waren het resultaat. Parametrische tools en software voor simulatie van bezonning hielpen het ontwerpteam en de opdrachtgever om samen te zoeken naar de meest geschikte oplossing.Green 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.Applied MechanicsEnvironmental & Climate Desig
Time-Dependent Behaviour of Polymers and Unidirectional Polymeric Composites
No full textMechanical Maritime and Materials Engineerin
Nilai Budaya Pada Novel Gugur Bunga Kedaton Karya Wahyu H.R: Kajian Antropologi Sastra Dan Implementasinya Dalam Pembelajaran Sastra Di Sma
No full textThis study has four objectives. Describe the social background of historical authorship of Wahyu H.R. Describe the structure builders novel GBK work of Wahyu H.R. Describe the cultural values embodied in the novel GBK work of Wahyu H.R. Explained implementation of novel research results GBK of Wahyu H.R work in teaching literature in high school. This study uses descriptive qualitative method. Object of research is cultural values contained in the novel GBK of Wahyu H.R with a review of the anthropological literature. The data in this study a paragaf, sentences, and words related to novel structures and cultural values. The primary data source in this study is novel GBK. While secondary data sources in the research is a biography of the author and literary authors. Data collection techniques used are literature, see, and record. Validation data using triangulation theory. Data were analyzed using heuristic and hermeneutic reading method. In the novel there are five cultural values were analyzed using the theory presented by Djamaris. This value includes the value of culture in the human relationship with God which consists of the value ketawakalan, piety, faith in destiny, grateful, and pleasure, the value of culture in human relationships with the society of the value of consensus, mutual cooperation, harmony or balance, and solidarity ,cultural values in human relationships with others that consist of the value of love, loyalty, obedience to parents, and wisdom, the value of culture in the human relationship with yourself that consists of the value of willpower, study, live custom and religion, courage and vigilance, and cultural values in human relationships with nature consisting of human values that unite with nature and human nature conquered or utilize. Implementation of cultural value in GBK novel as literature in high school teaching materials appropriate and relevant learning materials to be used as literature. GBK novel contains elements of intrinsic and extrinsic elements. Intrinsic element is implemented to the students to find a theme, a fact the story and the story means. Extrinsic elements of the novel are implemented to discover cultural values contained in the novel
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