What does Rlue mean? 5, What does lu mean

Lu is lutetium (aMetallic elements

Lutetium is a metallic element with the chemical symbol of lu, and the element corresponding to lutetium is a silvery-white metal, which is a rare earth element.

the hardest and densest of the metals; Melting point 1663, boiling point 3395, density. Lutetium is relatively stable in the air; Lutetium oxide is a cryptopure colorless crystal, which is dissolved in acid to form the corresponding colorless salt. Tong carries such as.

Physical properties

The rare earth metal of lutetium is luster, between silver and iron. The content of impurities has a great influence on their properties, so there are often obvious differences in physical properties in the literature. Lanthanum is a superconductor at 6°K.

Most rare earth metals are paramagnetic.

Gadolinium is stronger ferromagnetic than iron at 0. Terbium, dysprosium, holmium, erbium, etc., also exhibit ferromagnetism at low temperatures.

Low melting point of lanthanum and cerium and high vapor pressure of samarium, europium and ytterbium.

It shows that the physical properties of rare earth metals are very different. The thermal neutron absorption cross-section ratio of samarium, europium, and gadolinium is widely used in nuclear reactors.

The cadmium and boron of the control material are also large. Rare earth metals are malleable, with samarium and ytterbium being the best. With the exception of ytterbium, yttrium-group rare earths have higher hardness than cerium group rare earths.

The above content reference: Encyclopedia-Lutetium.

LU isMetallic elementsThe chemical symbol of lutetium.

Lutetium, atomic number 71, atomic weight.

Element name**Birthplace of the discoverer, Austria in 1907.

The chemist Wels and the French chemist Huerban respectively discovered lutetium from ytterbium soil. The content of lutetium in the earth's crust is 100,000 parts per million, mainly found in ytterbium phosphate and black rare gold ore, and there are two natural isotopes.

Lutetium 175, lutetium 176.

Usage:

According to the research team of the Singapore Center for Quantum Technology, compared to the cesium element.

and Rubidium, which provides greater stability and accuracy. Lead researcher Murray Barrett said: atomic clocks.

The final performance depends on the properties of the atom – how insensitive the atom is to its surroundings. In my opinion, lutetium is the top choice in this regard.

Lutetium not only vibrates at the frequency of light, it also has another advantage: changes in temperature and pressure have a negligible effect on it. Traditional quartz watches.

It is precisely because of these environmental factors that quartz watches are good, but not perfect. Again, these factors have a subtle effect on the accuracy of atomic clocks. Today, the research team conducted a large number of tests over a six-month period and concluded:

Of all the existing atomic clocks, lutetium is the least sensitive to the degree of warmth.

The above content reference: Encyclopedia-Lutetium.

Lue means left upper limb and is an abbreviation for left upper extremity.

1. Left upper extremity pronunciation.

English [left p (r) k strem ti], American [left p r k strem ti].

2. Upper definition.

the top, the top; Upper part; the upper one; inland; Highland; to the north.

3. Interpretation of extremity.

Extremity; Endpoint; End; Extreme; Utmost; Limit; (Human) limbs, hands and feet.

4. Example of left upper extremity.

he had decreased hearing in her left ear, left upper extremity tingling and numbness.

She had hearing loss in her left ear and tingling and numbness in her left upper extremity.

1. RLU reading refers to the size of the reading relative to the unit of light.

2. Relative Light Unit (RLU) The raw data of the luminometer is usually expressed in relative light units. The Relative Light Unit (RLU) is not a scientifically defined unit, but simply a relative measured value of the amount of light produced in a sample. It is not expected that different luminometers will give the same RLU readings for the same sample.

Each luminometer must be individually calibrated with a known analytical concentration or a specific calibrator. There is a big difference between the photon counting and current testing systems.

3. The RLU value can be measured by ATP biofluorescence detector and other instruments. The steps to measure RLU with an ATP biofluorescence detector are as follows: