Topic
Calibration curve
About: Calibration curve is a research topic. Over the lifetime, 6552 publications have been published within this topic receiving 95128 citations.
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TL;DR: Two simplified methods for assessing the emission of ammonia, from fertilized, flooded rice (Oryza sativa L. cv. Inga) fields without affecting the plant's environment, are described and compared with an established micrometeorological method.
Abstract: Two simplified methods for assessing the emission of ammonia, from fertilized, flooded rice (Oryza sativa L. cv. Inga) fields without affecting the plant's environment, are described and compared with an established micrometeorological method. Method A requires a circular plot of a 25-m radius over which wind speed and atmospheric ammonia concentrations are observed at 0.8 m above the floodwater. Method B requires measurements of ammoniacal nitrogen concentration, pH and temperature in the floodwater, and wind speed at a fixed height. Method A is the more accurate technique and requires fewer measurements. It appears that one calibration curve relating vertical flux of ammonia to these measurements can be applied in widely different environments. Method B is not only less accurate than Method A but appears to require different calibration curves to determine vertical flux for different environments. However, this method may be more useful for comparing ammonia losses from several different fertilizer treatments since only small plot areas are required for each treatment. Method B can be calibrated easily for each site by one set of simultaneous measurements on one treatment plot, using Method A.
104 citations
TL;DR: The absolute calibration of photostimulable image plates (IPs) used as proton detectors is presented and a calibration curve is presented that enables retrieving the proton number from the IP signal.
Abstract: In this paper, the absolute calibration of photostimulable image plates (IPs) used as proton detectors is presented. The calibration is performed in a wide range of proton energies (0.5-20 MeV) by exposing simultaneously the IP and calibrated detectors (radiochromic films and solid state detector CR39) to a source of broadband laser-accelerated protons, which are spectrally resolved. The final result is a calibration curve that enables retrieving the proton number from the IP signal.
103 citations
TL;DR: The analysis of pesticides residues using a last generation high resolution and high mass accuracy hybrid linear ion trap-Orbitrap mass spectrometer (LTQ- orbitrap-MS) was explored and enables the simultaneous detection/identification of non-target pesticides, pharmaceuticals, drugs of abuse, mycotoxins, and their metabolites.
103 citations
TL;DR: In this paper, pH-sensitive capacitive EIS sensors consisting of a Ta2O5-gate have been investigated in terms of their CIP (cleaning-in-place) suitability.
Abstract: “Non-glass” pH-sensitive capacitive EIS (electrolyte–insulator–semiconductor) sensors consisting of a Ta2O5-gate have been investigated in terms of their CIP (cleaning-in-place) suitability. After optimisation of the process parameters, even after 30 CIP cycles, the sensors show a clear pH response and nearly linear calibration curve. The video-microscopic and scanning electron microscopy investigations do not show any visible degradation or destruction of the Ta2O5 films.
103 citations
TL;DR: In this paper, the laser-induced breakdown spectroscopy (LIBS) was used to measure the chloride content of reinforced concrete cores and the results were compared with the results of standard chemical methods.
103 citations