Answer:
Aquatic plants
Explanation:
Aquatic biomass is energy crops which do not remain competitive for territory or any other energy with food plants. Aquatic biomass consists of various micro, macro- and aquatic plant species. The highest priority has been given to HTL treating aquatic biomass because microalgae are suitable for use and can potentially deliver the highest levels of biomass per area. Aquatic biomass, such as seaweed, algae and aquatic plants, is likely to achieve part of the growing biomass want.
Answer:
① There are many test methods: many kinds of NMR test methods, including one-dimensional and two-dimensional, have been widely used in structural analysis and material identification; quantitative analysis is no longer limited to 1H NMR experiment, and quantitative analysis of heteronuclear and even two-dimensional NMR appears frequently;
② There are many calibration targets: most compounds have multiple sets of NMR lines, which can be used as calibration targets for quantitative analysis theoretically, which undoubtedly provides convenience for the processing of test data;
③ There are many types of quantitative information: in the literature reports, not only the integral area or intensity of the resonance spectral line is used as the data parameter of NMR quantitative analysis, but also the change value of chemical displacement under specific conditions can be used as the parameter of content determination;
④ There are many reference modes: nuclear magnetic resonance obtains the data information of quantitative analysis through direct comparison of signals. In the experiment, multiple modes such as internal standard, external standard, solvent calibration and physical calibration can be used to provide reference signals. In the determination of relative content, the mode of sample self-standard can also be used.
In a word, NMR is a mature analytical and testing method with distinct technical characteristics, multiple means, flexible methods and rich information, which has a strong competitiveness in drug analysis and identification.
Explanation:
http://www.creative-biostructure.com/nmr-services_28.htm
Answer:
lt is because the magnetic field of the magnet is equal in magnitude to the Earth's horizontal magnetic field but it is in opposite direction
Explanation:
Thus the net magnetic field at these two points is zero
Answer:
Việt Nam
Việt Nam has the greatest rice production of any southeast Asian country.
