A straight-nine engine, also known as an inline-nine engine, is an internal combustion engine configuration that has nine cylinders arranged in a straight line along a single crankshaft. This design is less common than other inline engine configurations, such as the more typical straight-four, straight-six, or straight-eight engines. **Characteristics of a Straight-Nine Engine:** 1.
A Jubilee clip, also known as a hose clip or hose clamp, is a type of fastener used to secure a hose onto a fitting such as a pipe or a barb. It typically consists of a band, a screw mechanism for tightening, and an adjustment system that can accommodate different hose sizes. Jubilee clips are made from various materials, including stainless steel, which offers resistance to corrosion, and are commonly used in plumbing, automotive, and industrial applications.
DIN rail is a standardized metal rail used for mounting various industrial control equipment, such as circuit breakers, relay systems, and terminal blocks. The term "DIN" stands for "Deutsches Institut für Normung," which is the German Institute for Standardization. DIN rails are generally made of steel or aluminum and have a specific shape, typically resembling a "U" or "T" profile.
The Extended Finite Element Method (XFEM) is an advanced numerical technique used in computational mechanics to analyze problems involving discontinuities, such as cracks and interfaces, within the framework of the finite element method (FEM). It enhances the traditional FEM by allowing for the representation of discontinuities without the need for mesh refinement or re-meshing, which can be both labor-intensive and computationally expensive.
Market design is a subfield of economics that focuses on creating and optimizing the rules and structures of markets to ensure they function efficiently and equitably. It involves the application of economic theory, game theory, and strategic thinking to develop mechanisms for matching supply and demand in various contexts. Market designers aim to improve the way resources are allocated and help facilitate transactions among participants.
Medical photography and illustration are specialized fields that involve creating images and illustrations for medical purposes. They play a crucial role in the documentation, education, and communication of medical concepts, procedures, and conditions. Here's a brief overview of each: ### Medical Photography Medical photography involves capturing images of patients, medical conditions, surgical procedures, and anatomical structures. The primary purposes are: 1. **Documentation**: To record the condition of a patient for clinical records, legal documentation, or research purposes.
The Algebraic Reconstruction Technique (ART) is an iterative method used in computational imaging, particularly in the field of computed tomography (CT) and image reconstruction. It is employed to reconstruct images from projections, which are typically obtained through various means, such as X-ray scans. ### Key Concepts of ART: 1. **Projection Data**: In any imaging system, a series of measurements or projections are collected from different angles.
Bone scintigraphy, also known as a bone scan, is a nuclear imaging technique used to evaluate bone metabolism and detect abnormalities in the bones. This diagnostic procedure involves the intravenous injection of a small amount of radioactive material (radiopharmaceutical) that tends to accumulate in areas of high bone activity, such as inflammation, infection, or tumors.
As of my last knowledge update in October 2023, Positron Corporation is a company that focuses on developing and commercializing medical imaging technologies, particularly in the field of Positron Emission Tomography (PET). PET is a powerful imaging technique used primarily in oncology, cardiology, and neurology to visualize metabolic processes in the body.
Mathematical modeling of infectious diseases is a method used to understand and predict the dynamics of disease transmission in populations using mathematical equations and concepts. These models help researchers and public health officials analyze how diseases spread, identify potential outbreaks, and evaluate the impact of interventions such as vaccinations, social distancing, or treatment strategies. ### Key Components of Mathematical Models 1. **Population Segments**: - **Susceptible (S)**: Individuals who are not infected but can contract the disease.
The 142nd meridian east is a line of longitude that is 142 degrees east of the Prime Meridian, which is situated at 0 degrees longitude. Meridians are the imaginary lines that run from the North Pole to the South Pole and are used to help establish geographical coordinates. The 142nd meridian east passes through several regions, including parts of Eastern Russia, Japan, and various areas of the Pacific Ocean.
The 160th meridian west is a line of longitude that is 160 degrees west of the Prime Meridian, which is at 0 degrees longitude. This meridian runs from the North Pole to the South Pole and passes through various landmasses and bodies of water. In the Northern Hemisphere, the 160th meridian west crosses parts of the Bering Sea and approaches the Aleutian Islands of Alaska. In the Southern Hemisphere, it crosses the central Pacific Ocean.
The 4th meridian west is a line of longitude that is 4 degrees to the west of the Prime Meridian, which is located at 0 degrees longitude. The Prime Meridian runs through Greenwich, London, and serves as the baseline for measuring longitude. The 4th meridian west, therefore, passes through several countries as it extends from the North Pole to the South Pole.
The 95th meridian east is an imaginary line of longitude that runs from the North Pole to the South Pole, located at 95 degrees east of the Prime Meridian. It passes through several countries and regions. In the Northern Hemisphere, it goes through parts of Russia, China, and India, while in the Southern Hemisphere, it crosses through parts of the Indian Ocean. Meridians are useful for navigation and mapping, and they help define time zones and geographical demarcations.
Loam molding is a traditional method of casting metals that involves forming a mold from a mixture of sand, clay, and water, typically referred to as "loam." This molding technique is particularly well-suited for producing large and complex castings. **Key Characteristics of Loam Molding:** 1. **Materials:** The mold is created using a loamy mixture, which consists of fine sand mixed with a certain percentage of clay and water.
Hydrogen gas porosity refers to the presence of voids or pores within a material that can trap hydrogen gas. This concept is particularly relevant in various fields, including materials science, metallurgy, and engineering, where hydrogen can have significant effects on the mechanical properties and stability of materials. In metals and alloys, hydrogen can diffuse into the material, especially during processes like welding or when exposed to hydrogen environments, leading to issues such as hydrogen embrittlement.
As of my last update in October 2023, Lauren Rohwer does not appear to be a widely recognized public figure or a subject of notable mention in mainstream media or literature.
San mai is a traditional Japanese method of sword-making that involves the layering of different types of steel to create a blade that combines the best properties of the materials used. The term "san mai" translates to "three layers" in Japanese, referring to the structure of the blade, which typically consists of a hard, high-carbon steel core sandwiched between two layers of softer, more ductile steel.
A photonic crystal is an optical material that has a periodic structure on the scale of the wavelength of light. This periodicity creates a photonic band gap, which is a range of wavelengths (or frequencies) over which light cannot propagate through the material. Just as a semiconductor crystal can control the flow of electrons, a photonic crystal can control the flow of photons (light).
Automated Weather Source (AWS) generally refers to systems and technologies that automatically collect, process, and disseminate meteorological data without human intervention. These systems often include sensors and instruments that monitor various weather parameters, such as temperature, humidity, wind speed and direction, precipitation, and barometric pressure. AWS might include: 1. **Automated Weather Stations (AWS):** These are fixed locations equipped with various meteorological instruments that gather and transmit data at regular intervals, often in real-time.

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!
We have two killer features:
  1. 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-calculus
    Articles 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/derivative
  2. 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.
    Figure 5. . 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.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
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