Atomic Trap Trace Analysis (ATTA) is a highly sensitive technique used for detecting and analyzing trace amounts of specific atoms or isotopes. It is especially beneficial in the fields of environmental science, nuclear science, and security applications due to its ability to identify and quantify very low concentrations of target substances. The general concept involves trapping atoms using electromagnetic fields, allowing researchers to analyze their properties and behaviors in detail.
"Bootstrap current" typically refers to a phenomenon in plasma physics and fusion research. It describes a self-generated current that can be produced within a plasma confined in devices like tokamaks or stellarators. This current is important for maintaining the stability and confinement of the plasma during fusion reactions. In fusion devices, the plasma is often subject to magnetic fields which help confine it at high temperatures and densities required for fusion reactions to occur.
Ontology engineering is a field of study and practice focused on the development and formal representation of ontologies, which are explicit specifications of concepts, categories, and relationships within a specific domain of knowledge. It involves creating, refining, and maintaining ontologies to facilitate effective information sharing, retrieval, and interoperability across systems. Key aspects of ontology engineering include: 1. **Ontology Development**: This involves defining the classes, properties, and relationships within a domain.
"Works" in the context of nuclear issues could refer to various kinds of efforts, programs, or projects related to nuclear energy, nuclear weapons, or nuclear safety. Here are some key areas that might be encompassed: 1. **Nuclear Energy Development**: Initiatives aimed at advancing the technology and safety of nuclear power plants, including research on small modular reactors, fusion energy, and radioactive waste management.
Nuclear liability refers to the legal responsibilities and financial obligations of nuclear facility operators and other parties involved in nuclear activities, should an accident or incident occur that causes damage to people, property, or the environment. Given the potential severity and consequences of nuclear incidents, regulatory frameworks are in place to ensure that there are adequate compensation mechanisms for those affected.
United Nations General Assembly Resolution 1, adopted on January 24, 1946, was the first resolution of the UN General Assembly. The resolution addressed the issue of nuclear disarmament and called for the establishment of a commission to explore the potential for the control of atomic energy and the elimination of atomic weapons. Specifically, it urged member states to work towards preventing the spread of nuclear weapons and to promote the peaceful use of atomic energy.
Uranium mining is the process of extracting uranium ore from the earth, which is then used primarily as fuel for nuclear power plants and in the production of nuclear weapons. The process involves several steps, from exploration to extraction and processing. ### Key Aspects of Uranium Mining: 1. **Exploration**: Before mining can begin, geologists conduct surveys and use various methods, such as drilling and sampling, to locate uranium deposits.
The nuclear history of the United States encompasses a timeline of events, developments, and policies related to nuclear science, technology, arms development, and energy production. Here’s an overview of significant milestones: ### Early Discoveries and Research (1896–1940s) - **1896**: Discovery of radioactivity by Henri Becquerel.
Induced gamma emission (IGE) refers to a process in which gamma-ray photons are emitted from a nucleus when it is excited by an external source of gamma radiation. This phenomenon is somewhat analogous to stimulated emission in laser physics, where an external photon stimulates an excited atom or molecule to emit a photon of the same energy. In the case of induced gamma emission, a nucleus in an excited state can absorb a gamma photon, leading to the emission of a gamma photon of the same energy.
Cardiac ventriculography is a medical imaging procedure used to assess the function of the ventricles of the heart, usually the left ventricle. It is often performed to evaluate heart conditions, such as heart failure, coronary artery disease, or other heart abnormalities. During the procedure, a contrast agent is injected into the bloodstream, typically through a catheter placed in a blood vessel. This contrast agent enhances the visibility of the heart chambers on X-ray images.
Cobalt-59 nuclear magnetic resonance (Co-59 NMR) refers to a type of nuclear magnetic resonance spectroscopy that focuses on the isotope cobalt-59, which is a stable isotope of cobalt. NMR is a powerful analytical technique used to determine the structure, dynamics, and environment of molecules, based on the magnetic properties of certain atomic nuclei.
Deuterated solvents are solvents that contain deuterium (D), a stable isotope of hydrogen, instead of the more common hydrogen-1 isotope (¹H). Deuterium has one proton and one neutron in its nucleus, which gives it distinct nuclear properties. This feature makes deuterated solvents particularly useful in nuclear magnetic resonance (NMR) spectroscopy, a technique commonly used in chemistry and biochemistry to analyze the structure of organic compounds.
The Embrace Neonatal MRI System is a specialized medical imaging device designed for use in neonatal care. It is developed to perform magnetic resonance imaging (MRI) on premature and term infants in a manner that minimizes stress and risk. Traditional MRI machines can be challenging to use with newborns due to their size, the need for sedation during imaging, and the potential for movement artifacts.
fMRI adaptation, also known as repetition suppression, is a phenomenon observed in functional magnetic resonance imaging (fMRI) studies where the BOLD (blood oxygen level-dependent) signal in a specific brain region decreases when a stimulus is repeated. This decrease in activation is thought to reflect the brain's efficiency in processing familiar stimuli, suggesting that the neural representation of the stimulus becomes more efficient upon repeated exposure.
Protein function prediction refers to the process of inferring the biological function of a protein based on its sequence, structure, or evolutionary relationships. Understanding the function of proteins is crucial for many areas of biology and medicine, as proteins play key roles in virtually all biological processes within a cell.
Gadoversetamide is a contrast agent used in magnetic resonance imaging (MRI) to enhance the visibility of certain tissues and blood vessels in medical imaging. It is a gadolinium-based compound that helps improve the clarity and detail of MRI scans, particularly in evaluating conditions related to the brain, spine, and other organs.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.Figure 4. Visual Studio Code extension tree navigation.Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact





