Temperature Finger

Transcutaneous arterial C02 partial pressure ptcC02 Temperature (finger, core)... 

The liquid in B rapidly volatilises at the bottom of the tube T, the stopper being thrown off, and bubbles of air escape from D into the tube C. Continue boiling the liquid in J steadily until no more bubbles escape into C. Then carefully slip the end of D from under the tube C, close the end of C securely with the finger, and then transfer the tube to a gas-jar of water, so that the level of the water inside and outside C can be equalised. Measure the volume of air in C, and note the room temperature and the barometric pressure. The vapour density can now be calculated (see p. 428). 

A cold finger condenser packeFriedrichs condenser in combination with a circulating low-temperature bath (— 70°) is more convenient. 

With 2537 k-Light. 1 g (140) in 140 ml anhydrous dioxane is irradiated for 20 hr at room temperature with a Hanau NK 6/20 low-pressure mercury lamp placed in a central water-cooled quartz finger. 0.19 g of (141) crystallize from the crude reaction mixture as described above. Chromatography of the residual material on silica gel with benzene-ethyl acetate (4 1) gives 0.29 g of B-nortestosterone acetate [(142) 28.5 %] and starting material (140). 

Nitrite compounds are often known as poppers because of the popping noise produced when the capsules containing them are crushed between the fingers. Both amyl nitrite and butyl nitrite are yellowish liquids that evaporate at room temperature. These compounds are distributed under variety of names and are contained in a range of products, such as air fresheners. Iso-amyl nitrite is also available in the United States by prescription. Currently, the primary indication for isoamyl nitrite is for the treatment of cyanide poi-... 

The exactness of a measurement is expressed by its precision. This concept can be explained with an example. Suppose three swimmers are discussing the temperature of a swimming pool. The first dips a finger in the water and says that the temperature is about 24 °C. The second examines an immersed pool thermometer and reports the temperature to be 26 °C. The third swimmer, who has been monitoring daily variations in the pool s temperature, uses a portable precision digital thermometer and reports, According to my precision thermometer, the pool temperature is 25.8 °C. ... 

The swimmers have measured the water temperature using different measuring devices with different levels of precision. The first swimmer s finger test is precise to about 3 °C T — 24 3 °C (read twenty-four plus or minus three degrees ). The pool thermometer gives a reading that is precise to the nearest degree ... 

Figure 3a shows the spectra of CO adsorbed at room temperature on a typical Cr(II)/Si02 sample. At low equilibrium pressure (bold black curve), the spectrum shows two bands at 2180 and 2191 cm Upon increasing the CO pressure, the 2191 cm component grows up to saturation without frequency change. Conversely, the 2180 cm component evolves into an intense band at 2184 cm and a shoulder at 2179 cm The bands at 2191, 2184, and 2179 cm which are the only present at room temperature for pressures lower than 40 Torr, are commonly termed the room temperature triplet and are considered the finger print of the Cr(ll)/Si02 system (grey curve in Fig. 3). A new weak band at around 2100 cm appears at room temperature only at higher CO pressure. As this peak gains intensity at lower temperature, it will be discussed later. The relative intensity of the three components change as a function of the OH content (i.e., with the activation temperature and/or the activation time) [17].

It was decided to heat the solution for several hours in an attempt to speed up the process. The jar and it s contents were propped up on a porcelain stand inside a cooking pot. To this pot was added enough water to surround the pickle jar. The lid to the pickle jar was made finger tight so that the contents could not evaporate but still allow pressure to escape. For roughly 3 hours the mixture sat in very warm water (not boiling.) Occasionally one would lift the jar, and shake the contents before placing it back on the stand. Afterwards the heat source was turned off and the water and the pickle jar contents cooled to room temperature. 

In a study on another manganese enzyme, glutathione transferase, the Hoffmann group has proposed Q-band dispersion EPR at the unusually low temperature of 2 K as the optimal approach to collect data from Mn11 centers with D hv (Smoukov et al. 2002). This proposal would be practically limited by the fact that Q-band spectrometers running at 2 K can be counted on the fingers of one finger however, dispersion spectra are readily obtained in Q-band also at helium-flow temperatures (i.e., T>4.2K). 

In the MBR, the applicator of plate steel was an important safety feature in the possible event of vessel rupture or explosion. Temperature and pressure measurements, stirring, infinitely variable control of microwave power input, the cold-finger, as well as a pressure relief valve, have all contributed significantly to the safety and reliability of the system. 

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