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When was Eclipse PPM software created?
Eclipse PPM software was created in 2002.
How does thermal expansion of steel compare to aluminum?
Aluminum is higher expansion - about 23 ppm/C, whereas steels range from 12ppm/C for alloy steel and carbon steel, 17 ppm/C for stainless 300 austenitic series, and 11 ppm/C for stainless 400 martensitic series
How do you calculate Coupling constant j value?
Here is how you calculate a coupling constant J: For the simple case of a doublet, the coupling constant is the difference between two peaks. The trick is that J is measured in Hz, not ppm. The first thing to do is convert the peaks from ppm into Hz. Suppose we have one peak at 4.260 ppm and another at 4.247 ppm. To get Hz, just multiply these values by the field strength in mHz. If we used a 500 mHz NMR machine, our peaks are at 2130 Hz and 2123.5 respectively. The J value is just the difference. In this case it is 2130 - 2123.5 = 6.5 Hz This can get more difficult if a proton is split by more than one other proton, especially if the protons are not identical.
Circuit used to convert pwm to ppm?
the pwm output can be converter to ppm by passing pwm through a monostable multivibrator with a low stable state and high quasi stable state and which is negative edge triggered.
What is ppm modulation?
pulse position modulation, used in many RC model aircraft controls.
Is 100 ppm better or worse then 50 ppm?
100 ppm is worse than 50 ppm. The higher the ppm value, the more concentrated the substance is in the solution. In this case, a concentration of 100 ppm is twice as much as 50 ppm.
What is the safe COD level for drinking water?
Between 50 ppm and 300 ppm is safe. Better below 100 ppm.
How do you convert your in ground pool from chlorinated to saltwater?
Make sure your water is balanced and add salt (sodium chloride). You need to purchase a saltwater chlorine generator and you'll need to calculate the amount of salt you need. You would need to bring your pool salt content up to 3,000 ppm. Concentration is the amount (by weight) of salt in water and can be expressed in parts per million (ppm). Here are the classes of water: * Fresh water - less than 1,000 ppm * Slightly saline water - From 1,000 ppm to 3,000 ppm * Moderately saline water - From 3,000 ppm to 10,000 ppm * Highly saline water - From 10,000 ppm to 35,000 ppm Ocean water has a salinity that is approximately 35,000 ppm. http://www.windows.ucar.edu/tour/link=/earth/Water/dissolved_salts.html&edu=high There is now a system with a healthier salt available Magnesium and Potassium Chloride. it is more expensive but in my opinion it is also much better and halthier than Sodium chloride. The aticle I am using is from poolrite http://www.magnapool.com/about_magnapool.php
What is the maximum ppm of zinc sulfate that you may apply to a leaf without damaging the leaf?
Twenty (20) is the maximum ppm of zinc sulfate that can be applied without damaging the leaf.Specifically, 15-20 ppm is the critical concentration of zinc in plants. Less than 20 ppm indicates deficiency. More than 400 ppm identifies a situation of excess and toxicity.
What is a good level of ppm in well water?
"ppm" simply means 'parts per million' and describes the quantity of any substance in water. For example -Iron should be less than 3 ppm."ppm" simply means 'parts per million' and describes the quantity of any substance in water. For example -Iron should be less than 3 ppm.
What coding system typically used in digital telemetry is?
correct answer is PPM
How do you calculate the width of pulse in pulse position modulation?
The width of the pulse in PPM is not important, but is usually very narrow and constant in any given PPM system.
Is 1 ppm equal to 1 percent?
No, one percent is one part per 100. 1 ppm is equal to one part per 1,000,000. In other words, 1 PPM is 10,000 times smaller than 1%.
What should be the salt level be on a salt system pool?
The ideal salt level is between 2700-3400 ppm (parts per million) with 3200 ppm being optimal. Before adding salt to your pool, test the water to check your salt level.
Impact of chlorine in human health?
Chlorine is a toxic gas that irritates the respiratory system. Because it is heavier than air, it tends to accumulate at the bottom of poorly ventilated spaces. Chlorine gas is a strong oxidizer, which may react with flammable materials Chlorine is detectable with measuring devices in concentrations of as low as 0.2 parts per million (ppm), and by smell at 3 ppm. Coughing and vomiting may occur at 30 ppm and lung damage at 60 ppm. About 1000 ppm can be fatal after a few deep breaths of the gas. Breathing lower concentrations can aggravate the respiratory system, and exposure to the gas can irritate the eyes. The toxicity of chlorine comes from its oxidizing power. When chlorine is inhaled at concentrations above 30 ppm, it begins to react with water and cells, which change it into hydrochloric acdi (HCl) and hypochlorous acid (HClO).
How you write ppm capital or small?
ppm
What is a measure of how clear water is in a water system?
This is 'turbidity' and is measured in 'ppm' when you have a water sample analysed in a lab.
