This lab exercise exposes students to a potentially new alternative energy source …
This lab exercise exposes students to a potentially new alternative energy source hydrogen gas. Student teams are given a hydrogen generator and an oxygen generator. They balance the chemical equation for the combustion of hydrogen gas in the presence of oxygen. Then they analyze what the equation really means. Two hypotheses are given, based on what one might predict upon analyzing the chemical equation. Once students have thought about the process, they are walked through the experiment and shown how to collect the gas in different ratios. By trial and error, students determine the ideal combustion ratio. For both volume of explosion and kick generated by explosion, they qualitatively record results on a 0-4 scale. Then, students evaluate their collected results to see if the hypotheses were correct and how their results match the theoretical equation. Students learn that while hydrogen will most commonly be used for fuel cells (no combustion situation), it has been used in rocket engines (for which a tremendous combustion occurs).
Relation of purpose of data to data requirements. Relation of data to …
Relation of purpose of data to data requirements. Relation of data to costs. Accuracy requirements of measurements and error propagation: Related to a problem the required accuracy of measurements and the consequences for accuracy in the final result are discussed. Different types of errors are handled. Propagation of errors; for dependent and independent measurements, from mathematical relations and regression is demonstrated. Recapitulated is the theory of regression and correlation. Interpretation of measurements, data completion: By standard statistical methods screening of measured data is performed; double mass analysis, residual mass, simple rainfall-runoff modelling. Detection of trends; split record tests, Spearman rank tests. Methods to fill data gaps and do filtering on data series for noise reduction. Methods of hydrological measurements and measuring equipment: To determine quantitatively the most important elements in the hydrological cycle an overview is presented of most common hydrological measurements, measuring equipment and indirect determination methods i.e. for precipitation, evaporation, transpiration, river discharge and groundwater tables. Use, purpose and measurement techniques for tracers in hydrology is discussed. Advantages and disadvantages and specific condition/application of methods are discussed. Equipment is demonstrated and discussed. Areal distributed observation: Areal interpolation techniques of point observations: inverse distance, Thiessen, contouring, Kriging. Comparison of interpolation techniques and estimation of errors. Correlation analysis of areal distributed observation of rainfall Design of measuring networks: Based on correlation characteristics from point measurements (e.g. rainfall stations) and accuracy requirements the design of a network of stations is demonstrated.
-De hydrologie van Nederland in historisch perspectief en de rol van de …
-De hydrologie van Nederland in historisch perspectief en de rol van de mens daarin (de vroege geschiedenis; waterbeheersing van af het begin van de 17e eeuw; grote werken);-Hydrologie van Nederland (geologie; neerslag en verdamping; oppervlaktewater; gro
The course deals with the principles of hydrology of catchment areas, rivers …
The course deals with the principles of hydrology of catchment areas, rivers and deltas. The students will learn:
1). to understand the relations between hydrological processes in catchment areas 2?. to understand and to calculate the propagation of flood waves 3). to understand hydrological processes in deltas 4). to draft frequency analysis of extremes under different climatological conditions.
In dit college wordt een introductie gegeven van een groot aantal facetten …
In dit college wordt een introductie gegeven van een groot aantal facetten van de scheepshydromechanica en hun onderlinge samenhang zoals die later in de studie meer als geisoleerde onderwerpen aan bod komen. Behandeld worden: de hydrostatica, de geometrie beschrijving van het schip, inleiding lijnenplan, het begrip stabiliteit, de stabiliteit van drijvende lichamen, eenvoudige stabiliteit berekening bij kleine helling hoeken, de weerstand van lichamen onder water en aan het oppervlak, eenvoudige weerstand benaderings methoden voor schepen, de model wetten in de hydromechanica, de extrapolatie methode van Froude, de lift van een vleugel, de vleugel karakteristieken, de toepassing hiervan bij voortstuwing en bij scheepsschroeven, de schroef karakteristieken en een eenvoudige schroef berekening, en tenslotte de fysica van het zeilen en zeilvoortstuwing. Leerdoelen De student kan: 1. de basis van systeem analyse beschrijven (buitenwereld, interfaces, beperkingen, objecten, relaties enz.) 2. maritieme systemen zoals schip/motor/schroef beschrijven en modelleren met behulp van beperkte systeem analyse methodologie; eenvoudige maritieme systemen modelleren door onderverdeling in subsystemen en componenten 3. evenwicht condities van maritieme systemen bepalen en kwalitatief analyseren 4. de definities en belangrijkste karakteristieken van weerstand, voortstuwing en manoeuvreren (snelheid, weerstand, vermogen, RPM, draaicapaciteit) begrijpen en toepassen 5. de relaties tussen algemeen vloeistof dynamica en scheepshydromechanica (bijv. lift/aerodynamica/zeilen; visceuze stroming/Reynolds getal/volgstroomvelden/voortstuwingsrendement; laminair & visceuze stroming/weerstand; niet visceuze stroming/golf patronen/weerstand) beschrijven 6. de achtergrond van de belangrijkste schaal regels (Newton, Froude, Reynolds) d.m.v dimensie analyse uitleggen 7. schaalregels voor schaalmodel experimenten in een sleeptank toepassen en potentiĚÇle complicaties identificeren
Fenomenologische beschrijving van de stroming om een schip classificatie van weerstandscomponenten en …
Fenomenologische beschrijving van de stroming om een schip classificatie van weerstandscomponenten en parametrische methoden voor de berekening van de scheepsweerstand. Daarnaast wordt uitgelegd hoe de scheepsweerstand experimenteel bepaald kan worden.
Voor scheepsschroeven wordt aangegeven hoe de complete geometrie beschreven kan worden, hoe de stuwkracht en koppel uit een parametrische beschrijving kan worden berekend m.b.v. een systematische schroevenserie en via een ideaal stromings model (actuator schijf). Een introductie in cavitatie (vorming van waterdamp gebieden) is onderdeel van de cursus.
Paul Andersen explains how the pressure, volume, amount, and temperature of an …
Paul Andersen explains how the pressure, volume, amount, and temperature of an ideal gas are related. Absolute zero of a gas can be determined by varying the temperature and measuring the corresponding volume of a gas sample. Several examples including Boyle's and Charle's Law are included.
The video resource "The Ideal Gas Law: Crash Course Chemistry #12" is …
The video resource "The Ideal Gas Law: Crash Course Chemistry #12" is included in the "Chemistry" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Ideal Gas Problems: Crash Course Chemistry #13" is included …
The video resource "Ideal Gas Problems: Crash Course Chemistry #13" is included in the "Chemistry" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
In the first video segment, we present a cartoon model of a …
In the first video segment, we present a cartoon model of a weighted chain, which can be regarded as an approximation for a polymer under tension (e.g. a strand of DNA being stretched out using optical tweezers). The Hamiltonian and partition function for this system are described in the second segment. Finally, in the third segment, we calculate the average energy and elongation of the chain.
When a flood is forecast for the Red River of the North, …
When a flood is forecast for the Red River of the North, community leaders, emergency responders, and residents around Fargo, North Dakota, and Moorhead, Minnesota, can gauge their need for preparation by accessing visualizations showing the extent, depth, and timing of expected flooding.
The suburban city of Mount Rainier, Maryland, is doing its part to …
The suburban city of Mount Rainier, Maryland, is doing its part to improve the water quality of a polluted river in its region: residents and organizations are using green infrastructure to reduce stormwater runoff.
Paul Andersen defines impulse as the product of the force applied and …
Paul Andersen defines impulse as the product of the force applied and the time over which the force is applied. The impulse of an object is equivalent to the change in momentum of the object. Several problems related to impulse, force, and change in momentum are included.
Students learn about material balances, a fundamental concept of chemical engineering. They …
Students learn about material balances, a fundamental concept of chemical engineering. They use stoichiometry to predict the mass of carbon dioxide that escapes after reacting measured quantities of sodium bicarbonate with dilute acetic acid. Students then produce the reactions of the chemicals in a small reactor made from a plastic water bottle and balloon.
Facing sea level rise, increasing numbers of wildfires, and encroachment of invasive …
Facing sea level rise, increasing numbers of wildfires, and encroachment of invasive species, managers of a national forest chose to integrate climate change into their new plan.
A federal study assessed vulnerabilities of transportation infrastructure to extreme events in …
A federal study assessed vulnerabilities of transportation infrastructure to extreme events in Mobile, Alabama. The effort also resulted in tools and approaches that other transportation departments can use to assess and address their own vulnerabilities.
This course provides an understanding of how geospatial perspectives and technologies support …
This course provides an understanding of how geospatial perspectives and technologies support all stages of emergency management activities, from small scale emergency management efforts to large scale disaster/humanitarian efforts. This includes learning about commonly used and emerging geospatial tools. It also includes an exploration of advancements in data collection, processing and analysis capabilities, such as unmanned aerial systems, geospatial artificial intelligence, volunteered geographic information, social media, and many more.
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