Origin of L-Threonine: Foods rich in L-threonine are: 1  poultry. 2  fish. 3  cottage cheese. 4  sesame seeds. 5  lentils. 6  bananas. 7  carrots. 8  green leafy vegetables.
UOAs are a great tool in the Management of any machinery that uses liquid lubricants. Unfortunately, their real value is often misunderstood by those who contribute to BITOG. Firstly, it is important to realize that you get what you pay for. The most common forms of UOA are limited in their scope. It is a case of if you pay more you get more. So my comments here relate primarily to the âsimpleâ UOAs â the cornerstone of those appearing on BITOG.
When the air/fuel ratio is rich, the resistance of the sensor is around 950 ohms and more than 21 kilohms when the mixture is lean. As with the zirconia sensor, the titanium O 2 sensor is also considered a narrow-band O 2 sensor.t the stoichiometric air-fuel ratio, the generated O 2 sensor voltage is about 450 mV. The Engine Control Module (ECM) recognizes a rich condition above the 450 mV level, and a lean condition below it, but does not detect the extent of the richness or leanness.