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The Lobster Telephone is a surrealist artwork created by the artist Salvador Dalí in 1936. It features a standard telephone with a large, realistic lobster placed on top of it. The piece is emblematic of the surrealist movement, which sought to challenge conventional perceptions and provoke thought through unexpected juxtapositions.

NGC 4151 is a Seyfert galaxy located in the constellation Ursa Major. It is classified as a type 1 Seyfert galaxy, which is characterized by having broad emission lines in its spectrum, indicating the presence of a supermassive black hole at its center surrounded by an accretion disk.

NeVe 1 refers to a specific type of fiber-optic communication system or network. However, without more context, it's difficult to provide a precise definition, as "NeVe 1" could also pertain to various other fields, such as technology, gaming, or even product names.

X-ray astronomy detectors are specialized instruments used to observe and analyze X-ray emissions from astronomical sources, such as stars, supernova remnants, black holes, and galaxy clusters. Unlike optical telescopes that capture visible light, X-ray telescopes and their detectors are designed to detect high-energy radiation emitted in the X-ray part of the electromagnetic spectrum.

In astronomy, an X-ray flash (XRF) is a type of transient astronomical event characterized by the brief emission of X-rays. X-ray flashes are often associated with the explosive emissions from astrophysical phenomena, such as gamma-ray bursts (GRBs) or the collapse of massive stars leading to supernovae. X-ray flashes are typically shorter than gamma-ray bursts and are believed to be among the early signatures of such explosive events, often occurring before the more energetic gamma rays.

The Computed Tomography Dose Index (CTDI) is a standardized measurement used to quantify the radiation dose delivered to a patient during a computed tomography (CT) scan. It provides a way to assess and compare the radiation exposure between different CT scanners and imaging protocols.

X-ray fluorescence (XRF) is a non-destructive analytical technique used to determine the elemental composition of materials. When a sample is irradiated with X-rays, it absorbs some of the energy, causing the inner-shell electrons of the atoms in the sample to be ejected. As a result, electrons from higher energy levels within the atom fill these vacancies, and energy is released in the form of characteristic X-rays.

The Xuhui District in Shanghai is served by several metro stations across various lines of the Shanghai Metro. Some of the key stations in Xuhui District include: 1. **Xujiahui** (Line 1, Line 9, Line 11) 2. **Shanghai Indoor Stadium** (Line 11) 3. **Hengshan Road** (Line 1) 4. **Shangnan Road** (Line 9) 5.

Caobao Road station is a station on the Shanghai Metro system, specifically on Line 7. It is located in the Minhang District of Shanghai, China. The station serves as an important transit point within the city's extensive metro network, facilitating travel for residents and visitors alike. Like other metro stations in Shanghai, Caobao Road station features various amenities and is designed to accommodate a high volume of passengers. The station typically includes ticket vending machines, turnstiles, and accessibility features for individuals with disabilities.

The Diamond League Shanghai is a prominent athletics meeting that is part of the Wanda Diamond League, an annual series of elite track and field competitions. This event takes place in Shanghai, China, and typically features a wide range of athletics events, including sprints, middle-distance races, jumps, and throws, showcasing some of the best athletes in the world. The Diamond League began in 2010 and has evolved into one of the highest levels of competition in athletics, attracting top-tier athletes from various disciplines.

Cone Beam Computed Tomography (CBCT) is a medical imaging technique that uses X-ray equipment to create detailed 3D images of the body, particularly the bone structures and dental anatomy. Unlike traditional CT scans, which use a series of flat X-ray images taken from multiple angles to create cross-sectional images, CBCT employs a cone-shaped X-ray beam that captures a volumetric image in a single rotation around the patient.

Contrast CT, or Contrast-Enhanced Computed Tomography, is a medical imaging technique that uses contrast agents (also known as contrast media) to improve the visibility of anatomical structures in CT scans. ### Key features of Contrast CT: 1. **Contrast Agents**: These are substances that enhance the contrast of the images captured during the CT scan.