992 resultados para alluvial fan
Resumo:
L’objectiu d’aquest estudi consisteix en saber quins coneixements posseeixen, quines
actituds i quin ús fan els cuidadors informals de persones diagnosticades d’Alzheimer
en el domicili, de les contencions mecàniques i farmacològiques.
Aquest projecte es tracta d’un disseny exploratori, descriptiu i transversal. Per a
realitzar-lo es prendrà com a mostra a cuidadors principals informals, que tinguin al
seu càrrec persones diagnosticades d’Alzheimer que siguin usuàries de l’atenció
primària dels serveis sanitaris públics, de la província de Barcelona. L’estudi integrarà
dues fases: la primera consistirà en realitzar una prova pilot a un nombre reduït de
persones que servirà per avaluar i perfeccionar l’eina de la recollida de dades (els
instruments a emprar seran una enquesta d’elaboració pròpia i entrevistes) i la segona
consistirà en efectuar la recollida de dades a partir de l’enquesta modificada i validada
en la fase anterior.
En la fase pilot es realitzarà l’anàlisi de les dades a través de la tècnica coneguda com
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Resumo:
The primary purposes of this investigation are: 1) To delineate flood plain deposits with different geologic and engineering properties. 2) To provide basic data necessary for any attempt at stabilizing flood plain deposits. The alluvial valley of the Missouri River adjacent to Iowa was chosen as the logical place to begin this study. The river forms the western boundary of the state for an airline distance of approximately 139 miles; and the flood plain varies from a maximum width of approximately 18 miles (Plates 2 and 3, Sheets 75 and 75L) to approximately 4 miles near Crescent, Iowa (Plate 8, Sheet 66). The area studied includes parts of Woodbury, Monona, Harrison, Pottawattamie, Mills, and Fremont counties in Iowa and parts of Dakota, Thurston, Burt, Washington, Douglas, Sarpy, Cass and Otoe counties in Nebraska. Plate l is an index map of the area under consideration.
Resumo:
Un estudi permet identificar nous gens relacionats amb la regulació dels nivells de serotonina, el neurotransmissor sobre el qual actua el tabac
Resumo:
Un estudi permet identificar nous gens relacionats amb la regulació dels nivells de serotonina, el neurotransmissor sobre el qual actua el tabac
Resumo:
Societies exchange knowledge, ideas and merchandise throughout their territories. Topography plays a fundamental role in the trajectory of such movements whilst helping to explain the distribution of human constructions. Standard GIS functions have been employed widely to simulate communication routes between settlements, but the straight application of published least cost route models proved inadequate for Mediterranean alluvial plain areas in which seasonal floods become an important factor to acknowledge. The objective of this study is the production of a new model, using topographic and hydrologic factors as variables from which it would be possible to simulate a route, and test it against known Roman itineraries. The selected Roman stretches are Girona – Coll de Pannisars and Tarragona – Montblanc. The new model shows the need to consider each case individually but also stresses the hydrologic factor, expressed in seasonal floods, as being of prime importance in the creation and development of Roman roads in Mediterranean alluvial plains.
Resumo:
This thesis analyses the calculation of FanSave and PumpSave energy saving tools calculation. With these programs energy consumption of variable speed drive control for fans and pumps can be compared to other control methods. With FanSave centrifugal and axial fans can be examined and PumpSave deals with centrifugal pumps. By means of these programs also suitable frequency converter can be chosen from the ABB collection. Programs need as initial values information about the appliances like amount of flow and efficiencies. Operation time is important factor when calculating the annual energy consumption and information about it are the length and profile. Basic theory related to fans and pumps is introduced without more precise instructions for dimensioning. FanSave and PumpSave contain various methods for flow control. These control methods are introduced in the thesis based on their operational principles and suitability. Also squirrel cage motor and frequency converter are introduced because of their close involvement to fans and pumps. Second part of the thesis contains comparison between results of FanSave’s and PumpSave’s calculation and performance curve based calculation. Also laboratory tests were made with centrifugal and axial fan and also with centrifugal pump. With the results from this thesis the calculation of these programs can be adjusted to be more accurate and also some new features can be added.
Resumo:
In areas where there is irrigated agriculture, the recuperation of water reserves in alluvial aquifers may occur preferentially due to precipitation. Recharging can be evaluated from variation information of water depth measured in piezometers or observation wells. Thus, the aim of this research is to study the recharge in the alluvial aquifer formed by the Mimoso temporary stream in the semiarid region of Pernambuco (PE), Brazil, using the method of the fluctuation of the water level. This system is typical on the Brazilian Northeast semiarid region, using groundwater for domestic supply and for irrigation on small scale agriculture. Monthly potentiometric levels and rainfall data were used. The selected period for the study, from January 2002 to October 2009, involved extreme events of flooding and droughts as well as regular years, providing a better understanding of the behavior of the alluvial recharge. It was found that the system responds significantly to precipitation events. It was also observed that even with different soil textures in the study area, recharge factors were not significantly different. The study provided a better understanding of the behavior of aquifer recharge and its relationship with the soil and the rainfall events in the region.
Resumo:
Fan systems are responsible for approximately 10% of the electricity consumption in industrial and municipal sectors, and it has been found that there is energy-saving potential in these systems. To this end, variable speed drives (VSDs) are used to enhance the efficiency of fan systems. Usually, fan system operation is optimized based on measurements of the system, but there are seldom readily installed meters in the system that can be used for the purpose. Thus, sensorless methods are needed for the optimization of fan system operation. In this thesis, methods for the fan operating point estimation with a variable speed drive are studied and discussed. These methods can be used for the energy efficient control of the fan system without additional measurements. The operation of these methods is validated by laboratory measurements and data from an industrial fan system. In addition to their energy consumption, condition monitoring of fan systems is a key issue as fans are an integral part of various production processes. Fan system condition monitoring is usually carried out with vibration measurements, which again increase the system complexity. However, variable speed drives can already be used for pumping system condition monitoring. Therefore, it would add to the usability of a variablespeed- driven fan system if the variable speed drive could be used as a condition monitoring device. In this thesis, sensorless detection methods for three lifetime-reducing phenomena are suggested: these are detection of the fan contamination build-up, the correct rotational direction, and the fan surge. The methods use the variable speed drive monitoring and control options for the detection along with simple signal processing methods, such as power spectrum density estimates. The methods have been validated by laboratory measurements. The key finding of this doctoral thesis is that a variable speed drive can be used on its own as a monitoring and control device for the fan system energy efficiency, and it can also be used in the detection of certain lifetime-reducing phenomena.
Resumo:
Tutkimukseni käsittelee kokemuksellisuuden muodostumista Batman: Yön Ritari -elokuvan markkinointiin kehitetyssä ARG-pelissä. ARG-peli eli vaihtoehtotodellisuuspeli on pervasiivinen peli, joka välittyy osallistujille reaaliaikaisesti erilaisten arkipäiväisten viestimien kautta immersiivisyyttä ja yhteisöllisyyttä korostaen. Vuorovaikutukseen perustuva ARG-peli on kokemus, joka muodostuu yhteistyössä pelintekijöiden ja osallistujien välillä. Tutkimuksen keskeisenä tavoitteena on tarkastella Why So Serious? -pelin kokemuksellisuutta luovia elementtejä sekä pelintekijöiden että pelaajien näkökulmasta. Tutkimusaineistoni koostuu verkkoaineistosta. Käsittelen tutkimuksessani kahta peliyhteisön kannalta merkittävää keskustelufoorumia, joissa osallistujat kokivat ja pelasivat peliä yhteisönä ja yksilöinä. Tutkimusmetodini pohjautuu fenomenologis-hermeneuttiseen metodiin: tarkastelen ARG-pelin kokemuksellisuutta tulkitsemalla osallistujien kirjallisia ilmaisuja ilmiöön liittyvä teoriatausta tukenani. Tutkimukseni on aineistolähtöinen ja etenee kronologisesti. Pelin kokonaiskuvan muodostamisessa olen hyödyntänyt osallistujien luomaa wikisivustoa, mikä toimi pelin aikana sekä informaatiokanavana että peliä dokumentoivana mediana. Vaikka käsittelemäni ARG-peli ei edustanut perinteistä ARG-peliä muun muassa heikon tarinallisuutensa vuoksi, se muodosti osallistujilleen hyvin voimakkaan kokemuksen. Why So Serious? -pelin kokemuksellisuus pohjautui hyvin pitkälti Batman-brändin tunnettuuteen ja populaarikulttuuriseen arvoon sekä nimekkäisiin fiktiivisiin hahmoihin, jotka yhdessä houkuttelivat osallistujia uppoutumaan pelin vaihtoehtotodellisuuteen. Keskinäisestä kilpailustaan huolimatta peliyhteisöt muodostivat jäsenilleen kollektiivisen identiteetin tunteen, minkä lisäksi muun muassa pelin dokumentointi ja spekulointi laajensivat osallistujien kokemusta. Yksilötasolla ensikertalaisuus vaikutti vahvasti pelin muodostamaan kokemukseen: kokemus oli voimakkaampi niille pelaajille, jotka osallistuivat ARG-peliin ensimmäistä kertaa. Why So Serious? -pelistä tuli ainutkertaisuudessaan osa Batman-brändin historiaa, mikä vahvisti pelin osallistujilleen tuottamaa kokemusta. 2000-luvun kuluttaja etsii elämyksiä ja myös markkinoinnin on mukauduttava – sekä uudistuttava – kuluttajien kasvavien vaatimuksien mukaan. Tutkimukseni on yksi esimerkki onnistuneesta, 2000-luvun kuluttajille suunnatusta markkinointikampanjasta.