Consider regression though the origin (i.e., straight line regression.pdf
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Consider regression though the origin (i.e., straight line regression with population intercept known to be zero) with Var(eixi)=xi22. The corresponding regression model is Yi=xi+ei(i=1,,n). Find and explicit expression for the weighted least square estimate of ?.
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Consider four populations of island iguanas. Each island has a differ.pdf
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becomes Because Edison has deviated from the cartel agreement and increased his output of
water by 35 gallons, Hilary decides that she will also increase her production by 35 gallons.
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For them, total revenue equals profit. The following table shows the town's demand schedule for
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INTRODUCCIN
El espectrofotmetro es un instrumento utilizado para medir los espectros de muestras y reas
microscpicas. Se utiliza para medir espectros NIR UV visibles de muestras microscpicas. Mide
la transmisin, la absorcin, la reflectancia, la polarizacin y la fluorescencia de una muestra
determinada. Est diseado como un microscopio ptico combinado con un espectrofotmetro NIR
UV visible. Mide un rango de muestras de hasta 1 x 1 micrmetro. Con la ayuda del software, se
pueden realizar medidas de mapeo 3D y calorimetra. Con esto es posible la medicin del espesor
de pelcula delgada de micropuntos sin contacto. Tiene una gran influencia en el campo de la
investigacin y la industria. Dado que tiene un gran rango espectral, los cientficos e ingenieros lo
utilizan para obtener espectros de reas de muestra extremadamente pequeas. Incluso funciona en
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qumico lo usa para combinar fibras o pinturas de muestras microscpicas. Un gelogo puede usarlo
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RESULTADO DE APRENDIZAJE
1. El funcionamiento mecnico bsico del espectrofotmetro secomam PRIM.
2. Los principios bsicos de la espectrofotometra, incluida la relacin/clculo del valor de
transmitancia (T) y absorbancia (A).
3. Identificar la absorbancia mxima (A max) de un compuesto y cmo se determina.
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A.Determinar el espectro de absorbancia y la longitud de onda de mxima absorbancia El
instrumento que se utilizara en esta prctica es el Secomam PRIM.
1. El espectrofotmetro est encendido. calent el
mquina durante 15 minutos.
2. Se presion el botn Val para activarlo.
3. El botn de transmitancia ha sido seleccionado por el utilizado
del botn A
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5. La cubeta se limpi y sec.
6. Se coloc la solucin en blanco y la cubeta en el portamuestras del espectrmetro.
7. Se presion el botn cero.
8. Se ha retirado la cubeta con la solucin en blanco.
9. Se limpi y sec otra cubeta.
10. La solucin estndar A se verti en la cubeta y la cubeta se coloc en el portamuestras del
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11. La transmitancia se registra en el papel de resultados.
12. Se retir la cubeta con la solucin estndar A.
13. La longitud de onda se cambia a 425 nm
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15. Se presion el botn cero.
16. Se retir la cubeta con la solucin en blanco.
17. La cubeta con la solucin estndar A se coloc en
portamuestras del espectrmetro.
18. La transmitancia se registra en el papel de resultados.
19. Se retir la cubeta con la solucin estndar A.
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B. Traz.
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do 2 decimu' phoes, es. 1.62 or 1.62% and all other mawers to 1 decind ploce, es. I. or L.6Ki (a)
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Describe It: The Inflammatory Response, Part 1 Describe the sequence of events of the first part
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Compete Corporation reported a quick ratio of 6.25 , current assets o.pdf
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