A Twenty-foot Equivalent Unit (TEU) is a standard measurement used in the shipping and logistics industry to describe the capacity of container ships and cargo terminals. It represents the dimensions of a standard 20-foot shipping container, which is one of the most commonly used sizes in global shipping. Each TEU can accommodate one standard 20-foot container.
The Toxicity Equivalency Factor (TEF) is a method used to assess the toxicity of a mixture of polychlorinated biphenyls (PCBs), dioxins, or other similar compounds by converting their concentrations into a common units or scale.
TNT equivalent is a measure used to compare the energy released in an explosion with the energy released by TNT (trinitrotoluene), which is a widely used explosive. The term is often used in contexts such as nuclear explosions, bomb testing, or large-scale industrial accidents to provide a frame of reference for the magnitude of the explosion. Different materials release energy in different amounts when they explode.
In the context of programming and technology, "Salt" often refers to SaltStack, which is a configuration management and orchestration tool that enables automated infrastructure management. Salt is used for managing and monitoring servers, scaling infrastructure, and deploying applications. If you're asking for alternatives or equivalents to SaltStack, some popular configuration management and orchestration tools include: 1. **Ansible**: A simple, agentless configuration management tool that uses YAML for playbooks.
The Röntgen (symbol: R) is a unit of measurement used in radiation physics to quantify exposure to ionizing radiation. Specifically, it measures the amount of X or gamma radiation that produces a particular amount of ionization in air. The Röntgen is defined as the amount of radiation that produces 2.58 × 10^-4 coulombs of charge per kilogram of air.
The Roentgen Equivalent Man (rem) is a unit of measurement used to quantify the biological effect of ionizing radiation on human tissue. It is a derived unit that takes into account the type of radiation and its potential to cause harm to humans. In essence, the rem is used to express the effective dose of radiation, considering both the amount of energy deposited in the tissue and the type of radiation (such as alpha particles, beta particles, gamma rays, etc.
The Ringer equivalence number (REN) is a concept used in the field of pharmacology and toxicology to describe a quantitative measure related to the efficacy of a drug or therapeutic agent in producing a certain biological effect. The REN is often related to drug dosage and its relationship with the response of a biological system, helping to determine how effectively a substance can produce a desired outcome compared to other compounds.
Residential Customer Equivalent (RCE) is a common metric used in the utility industry, particularly by electric and gas companies, to quantify the demand a particular customer or group of customers places on utility services in terms that can be compared to an average residential customer. This concept helps utilities assess and manage capacity, load forecasting, and infrastructure investment decisions.
Population equivalent (PE) is a term commonly used in environmental science and wastewater treatment to express the impact of a specific group of people or activities in terms of the load they place on a system, usually related to waste generation or water use. This concept translates various sources of pollution or waste into a common measure that can be compared to that generated by a standard individual, typically a person.
Passenger Car Equivalent (PCE) is a concept used in transportation engineering and traffic studies to quantify the impact of different types of vehicles on road traffic. It allows for the comparison of various vehicle types, such as buses, trucks, and motorcycles, in terms of their effect on road congestion and traffic flow, relative to a standard passenger car. The PCE provides a way to express the number of passenger cars that would produce an equivalent level of traffic impact as a given vehicle type.
Oxygen equivalent is a term commonly used in various fields, including chemistry, biology, and environmental science, to provide a standardized measure of the amount of oxygen that is required to completely oxidize a substance. This can apply to different contexts, such as water quality assessment, assessing the degradation potential of organic substances, or evaluating the impact of pollutants.
Noise-equivalent temperature (NET) is a measure used in the field of radiometry and spectroscopy to quantify the sensitivity of a detector or an instrument that measures electromagnetic radiation, particularly in the infrared and microwave regions. It describes the amount of thermal noise generated by the detector that would correspond to a given signal level. In essence, the NET indicates the temperature of a black body that would produce the same amount of thermal noise as the actual electronic noise present in the detector.
Noise-equivalent power (NEP) is a key parameter used to describe the sensitivity of a detector or sensor, often in the context of optical and infrared detectors. It quantifies the minimum power of an incoming signal that can be reliably detected above the noise level of the system. Specifically, NEP is defined as the incident power of a signal that produces a signal-to-noise ratio (SNR) of one when integrated over a given bandwidth.
Moisture equivalent is a term often used in soil science and agriculture to describe the amount of water that is held in the soil relative to its dry weight. It provides an indication of the soil's ability to retain moisture, which is crucial for plant growth and agricultural productivity. Specifically, moisture equivalent can be defined as the amount of water contained in a soil sample when the soil is in a specific state, often at its field capacity.
The term "milk equivalent" typically refers to a measurement used to express the impact or value of a product in comparison to milk, often in the context of dairy products, nutrition, or food processing. It can denote the amount of protein, fat, or other nutrients in a food item that would be equivalent to that found in a certain volume or weight of milk.
Miles per gallon gasoline equivalent (MPGe) is a measure used to compare the energy consumption of alternative fuel vehicles (AFVs) to traditional gasoline-powered vehicles. It represents the distance a vehicle can travel using the same amount of energy contained in one gallon of gasoline. The concept of MPGe is particularly useful for electric vehicles (EVs) and other alternative powertrain vehicles (like hydrogen fuel cell vehicles) that do not use gasoline directly but instead utilize electricity or other fuels.
The term "meter water equivalent" (MWE) refers to the volume of water that would have the same energy content as a given amount of energy in another form, typically in the context of geothermal energy or heat transfer. In simpler terms, it's a way of expressing energy in terms of the equivalent distance that a column of water would rise if it were subjected to the same energy.
The Metabolic Equivalent of Task (MET) is a unit that estimates the amount of energy expended during physical activities. One MET is defined as the energy cost of sitting quietly, which is approximately 1 kcal/kg/hour (or 3.5 mL of oxygen per kg of body weight per minute) for an average adult.
Livestock grazing comparison refers to the assessment and analysis of different grazing practices, animal species, or grazing management techniques in relation to various factors such as productivity, sustainability, environmental impact, economic viability, and animal welfare. The comparison can involve several aspects, including: 1. **Animal Species**: Different livestock species (e.g., cattle, sheep, goats, and buffalo) can be compared based on their grazing habits, nutritional needs, and their impact on pasture health.
The term "human equivalent" can refer to various concepts depending on the context. Here are a few interpretations: 1. **Biological Standards**: In pharmacology or toxicology, "human equivalent" often refers to dosages or effects that are standardized to reflect what would impact a human subject, often derived from animal studies. Researchers may use a "human equivalent dose" (HED) to compare the effects of drugs or chemicals tested on animals to potential effects in humans.

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