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In March 2023, Quizlet started to incorporate AI features with the release "Q-Chat", a virtual AI tutor powered by OpenAI's ChatGPT API. [27] [28] [29] Quizlet launched four additional AI powered features in August 2023 to assist with student learning. [30] [31] In July 2024, Kurt Beidler, the former co-CEO of Zwift, joined Quizlet as the new ...
The first email Tomlinson sent was a test. It was not preserved and Tomlinson describes it as insignificant, something like "QWERTYUIOP." This is commonly misquoted as "The first e-mail was QWERTYUIOP." [22] Tomlinson later commented that these "test messages were entirely forgettable and I have, therefore, forgotten them." [23]
[5] The first radiograph. Röntgen discovered X-rays' medical use when he made a picture of his wife's hand on a photographic plate formed due to X-rays. The photograph of his wife's hand was the first ever photograph of a human body part using X-rays. When she saw the picture, she said, "I have seen my death." [5]
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Indirect detectors contain a layer of scintillator material, typically either gadolinium oxysulfide or cesium iodide, which converts the x-rays into light.Directly behind the scintillator layer is an amorphous silicon detector array manufactured using a process very similar to that used to make LCD televisions and computer monitors.
Ray is a 2004 American biographical musical drama film focusing on 30 years in the life of soul musician Ray Charles. [ a ] The independently produced film was co-produced and directed by Taylor Hackford ; it was written by James L. White from a story by Hackford and White.
The major benefit of the increased power density level for the metal-jet X-ray tube is the possibility to operate with a smaller focal spot, say 5 μm, to increase image resolution and at the same time acquire the image faster, since the power is higher (15-30 W) than for solid-anode tubes with 10 μm focal spots.
Barium X-ray examinations are useful tools for the study of appearance and function of the parts of the gastrointestinal tract. They are used to diagnose and monitor esophageal reflux, dysphagia, hiatus hernia, strictures, diverticula, pyloric stenosis, gastritis, enteritis, volvulus, varices, ulcers, tumors, and gastrointestinal dysmotility, as well as to detect foreign bodies.