| 词汇 | example_english_mass-spectrometer |
| 释义 | Examples of mass spectrometerThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The analysis of products was performed using a gas chromatograph coupled to an infrared detector and a quadrupole massspectrometer. The argon analysis was performed using the isotope dilution procedure on a noble gas massspectrometer in duplicate. The massspectrometer was used in static multi-collector mode for this study. The evolved gases are analysed by a massspectrometer. Individual oligomers produced in heating experiments on urea-amino acid mixtures were analysed using a liquid chromatograph massspectrometer. The diagnostic systems consisted of an electrostatic massspectrometer and an ion collector. The same massspectrometer is also able to detect negative ions resulting from a proton subtraction. The gas generated at each temperature will be analysed by the massspectrometer. Corrections were made for irradiation interference reactions and massspectrometer discrimination. This massspectrometer will also study other elements and look for methane in samples of the atmosphere. Time-of-flight massspectrometer and multiple-coincidence techniques are introduced which are the basic tools to study the fragmentation process on a femtosecond time scale and to distinguish among the multiple-fragmentation channels. The fine spray enters the heated capillary and the fine droplets evaporate leaving a beam of macromolecules to enter the massspectrometer through two differentially pumped chambers. Naturally, the experimental set-up used at that time did not permit the isolation of the carbon radicals, which were produced just in sufficient quantities to feed a massspectrometer. That requires capability for connecting the massspectrometer to a gas liquid chromotograph, as well as a high performance liquid chromatograph. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 A massspectrometer is the only available technique that fulfils the necessary criterion for a primary reference standard. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 One £20,000 massspectrometer goes a long way. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 In a second stage of massspectrometer, the fragments from the molecules are separated from the ions of interest. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The massspectrometer was invented in the 1940s and began to be used in radiometric dating in the 1950s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The percentage of renewable carbon in a material (solid or liquid) can be measured with an accelerator massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The distance between the ion source and the inlet of the massspectrometer is 5 to 25 mm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a second step the massspectrometer separates ions according to their mass-to-charge ratio. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Using an ultra-high resolution massspectrometer, bio-archaeologists managed to produce a near complete collagen sequence. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At the end of this column, the solution is sprayed out of a narrow nozzle charged to a high positive potential into the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The action of the primary droplets hitting the surface produces secondary droplets that are the source of ions for the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Later the device will be placed in a vacuum chamber, connected to a vacuum pump and a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The development of the massspectrometer allowed the exact mass of atoms to be measured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Subsequently, one or more chromatographic separations are applied to resolve resulting peptides, which are then ionized and analyzed in a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The massspectrometer was a new tool for examining the structures of small botanical molecules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This will produce a set of peptides that can be analysed using a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This method employed devices known as calutrons, a hybrid of the standard laboratory massspectrometer and cyclotron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It was speculations about isotopy that directly gave rise to the building of a massspectrometer capable of separating the isotopes of the chemical elements. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The massspectrometer does this by breaking each molecule into ionized fragments and detecting these fragments using their mass-to-charge ratio. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These salts are not volatile, so this technique is less useful with a massspectrometer as the detector. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a massspectrometer, a vaporized sample is bombarded with high-energy electrons, which cause the sample components to become positively charged ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The ions formed are directed to the massspectrometer inlet by both the gas flow and a slight vacuum in the spectrometer inlet. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a quadrupole massspectrometer the quadrupole is the component of the instrument responsible for filtering sample ions, based on their mass-to-charge ratio ("m/z"). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A linear series of three quadrupoles is known as a triple quadrupole massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The data collected from the massspectrometer was delivered to the individual rooms for the anesthesiologist to use. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Computer simulation of ionization and fragmentation processes occurring in massspectrometer is the primary tool for assigning structure or peptide sequence to a molecule. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the early 1960s, he coupled a low-field ion mobility drift cell to a sector massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once operating pressure has been reached, the massspectrometer can start its measuring operation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is commonly used as a component of a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is critical that the sample be processed before entering the massspectrometer so that only a single chemical species enters at a given time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A secondary ion massspectrometer can also be used. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A common tool used to measure trace elements in an otolith is a laser ablation inductively coupled plasma massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The massspectrometer then isolates ions of a particular peptide, subjects them to collision-induced dissociation, and records the produced fragments in a tandem mass spectrum. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Desired fragmentation is made in the collision zone (post-source fragmentation) of a tandem massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The proteins were identified by splicing them with trypsin and then searching through the results of passing the product through a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The droplets travel to the massspectrometer inlet and are further desolvated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It can be configured as a charged particle energy analyzer, monochromator, or massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The massspectrometer records the spatial distribution of molecular species such as peptides, proteins or small molecules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One application of this principle is the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The massspectrometer uses this principle to measure the mass-to-charge ratio of ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is achieved by ionizing the sample with inductively coupled plasma and then using a massspectrometer to separate and quantify those ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its isotopic composition would be measured with a massspectrometer to determine its average relative atomic mass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another relatively common detector is the ion trap massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The laser what set up in a stainless steel cylindrical cell with the laser perpendicular to the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a histogram usually acquired using an instrument called a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A common variation of the transmission quadrupole is the triple quadrupole massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, during collision-induced dissociation peptides collide with a gas within the massspectrometer and break into pieces at their peptide bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These peptides are separated by liquid chromatography en route to a tandem massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Similar concepts for the weighing of charged particles can be found in the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Using a quadrupole massspectrometer, scientists can learn what the atmosphere was like when the dinosaurs roamed the earth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The vacuum system will carry any tracer gas molecule into the analyzer cell of the magnetic sector massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Adduct ions are often formed in a massspectrometer ion source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. After ionization, the ions travel through air into the atmospheric pressure interface which is connected to the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Proteomic technologies must be sensitive and robust, it is for these reasons, the massspectrometer has been the workhorse of protein analysis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Techniques available to measure blood concentrations include thin layer chromatography, gas liquid chromatography with or without a massspectrometer, and radioimmunoassay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It used devices known as calutrons, a hybrid of the standard laboratory massspectrometer and cyclotron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Dating can now be performed on samples as small as a nanogram using a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Analysis is usually done using a massspectrometer, detecting small differences between gaseous elements. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The dust massspectrometer detected material similar to the composition of carbonaceous chondrites meteorites and also detected clathrate ice. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is also known as a transmission quadrupole massspectrometer, quadrupole mass filter, or quadrupole massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The ions then enter the massspectrometer where they are discriminated based on mass based on a double focusing system. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The resulting ions are then analyzed by the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One of the review's recommendations was that a massspectrometer and a nuclear magnetic resonance spectrometer should be purchased forthwith. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are then sent through one massspectrometer to separate them by mass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In addition to the survivability upgrade, the massspectrometer has the added capacity to identify numerous industrial chemical hazards. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At that time, helium-3 was unknown because the massspectrometer had not yet been invented. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Samples must be introduced to the massspectrometer as pure gases, achieved through combustion, gas chromatographic feeds, or chemical trapping. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Instruments included a dust detector, neutral massspectrometer, and ultraviolet-visible spectrometer, as well as a technology demonstration consisting of a laser communications terminal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For organic materials in particular, this process is often monitored by a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once the vacuum has reached the massspectrometer operating pressure, any helium leakage will be measured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The composition of the gaseous mixture is measured at the exit of the sample container with appropriate detectors (thermal conductivity detector, massspectrometer). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cells are nebulized and sent to an argon plasma, ionizing the multi-atom metal tags, which are then analyzed by a time-of-flight massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When he became a research professor he used this frustration as motivation to invent and construct the guided ion-beam tandem massspectrometer, which provided highly accurate thermodynamic measurements. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A sector field massspectrometer uses a combination of an electrostatic analyzer and a magnetic analyzer to separate the secondary ions by their mass to charge ratio. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ionization of too much material results in a large microplasma whose time spread and ion energy distribution entering the massspectrometer can result in undesired peak deformation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The charged droplets pick up the sample through interaction with the surface and then form highly charged ions that can be sampled into a massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One can use data in an experiment, which are a function of the pressure like the intensity of a massspectrometer, to determine the desorption rate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An ordinary massspectrometer is designed to analyse the composition of very small samples; the calutron uses the same principle, but is designed to separate substantial quantities of known isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ions can be formed by extraction into charged electrospray droplets, thermally desorbed and ionized by chemical ionization, or laser desorbed or ablated and post-ionized before they enter the massspectrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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