نتایج جستجو برای: chromatography instruments
تعداد نتایج: 168881 فیلتر نتایج به سال:
The year 2023 marks the 40th anniversary of commercialization inductively coupled plasma mass spectrometry (ICP-MS). Today, there are close to 2000 ICP-MS systems installed worldwide every year, representing around $400M in annual sales. These instruments used for a wide variety applications, from routine, high-throughput multielement analysis more complex tasks, such as trace element speciatio...
The analytical capabilities of various liquid chromatography/mass spectrometry (LC/MS) instruments are compared in the study of illicit and prescription drugs in blood. The blood samples analyzed include postmortem and driving under the influence of drugs (DUID). The presence of drug compounds in these samples was previously confirmed using gas chromatography/mass spectrometry (GC/MS). In this ...
modern world revolutions have created some instruments known as quasi-negotiable instruments which are different from negotiable ones, despite having some similarities to them. commercial custom recognizes them as quasi-negotiable instruments. the principle is that we don’t need new legal regime for this new category because they are right in personam when they are created and rights in re...
The research is devoted to the study on adaptation, verification and implementation of method for determining sinigrin in mustard seeds products its processing, as well other types food raw materials plant origin. relevance determined, one hand, by need control technological processes and, lack effective standardized methods Russian Federation. aim modify (or) adapt most identification quantifi...
he Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) mission is providing a core set of measurements defi ning the basic states of the mesosphere and lower thermosphere/ionosphere (MLTI) region (approximately 60–180 km above the Earth’s surface) and its global energy balance. This article discusses the TIMED spacecraft’s suite of four remote sensing instruments designed to ob...
The principal objective was to measure the magnetic fields occurring in dental surgeries at simultaneous subtraction of direct ground component of the magnetic field. A specifically designed instrument with the Hall probe was used for the measurement. It consisted of two amplifiers and a low frequency filter. Its task was to measure mean square values of the field (RMS) dependent on the positio...
In this paper, we present an approach to design of command tables in aircraft cockpits. To date, there is no common standard for designing this kind of command tables. Command tables impose high load on human visual senses for displaying flight information such as altitude, attitude, vertical speed, airspeed, heading and engine power. Heavy visual workload and physical conditions significantly ...
Results Clear explanations with diagrams and photos are used to illustrate the differences of the most commonly used surgical instruments. We demonstrate how this affects needle and tissue handling, as well as performance. Tips are also given for scrub nurses on handling and loading left-handed instruments. We recommend a standard set that will allow Cardiothoracic Units to provide the essentia...
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