Specialty Digest

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Concepts

Ideas, terms, and mechanisms explained clearly.

a slow feeder dog bowl used to manage feeding pace and portion control. photo by eltoro.vet, cc0.

Pet Nutrition and Feeding

Species-Specific Nutritional Needs Dogs and cats have fundamentally different nutritional requirements rooted in their evolutionary diets. Dogs are biologically classified as omnivores, capable of deriving nutrition from a mix of animal and plant sources and synthesizing certain nutrients internally. Cats, by contrast, are obligate carnivores that require specific nutrients, including taurine, arachidonic acid, and preformed

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The science of formulating and managing diets for companion animals to meet species-specific nutritional requirements across life stages.

pH

In simple terms pH tells you how acidic or basic a water based liquid is. Lemon juice is acidic, a baking soda solution is basic, and pure water sits between them. The scale runs from 0 to 14. Seven is neutral, below 7 is acidic, and above 7 is basic, also called alkaline. How it

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pH measures how acidic or basic a water based solution is, on a scale where 7 is neutral, lower is acidic and higher is basic.

Diagram of human internal organs including the liver, the primary site of drug metabolism

Pharmacokinetics

Pharmacokinetics is the branch of pharmacology that studies how the body absorbs, distributes, metabolizes, and eliminates a drug over time, essentially describing what the body does to a drug rather than what the drug does to the body, which is the separate focus of pharmacodynamics. Understanding a drug’s pharmacokinetic profile is essential for determining appropriate

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The study of how the body absorbs, distributes, metabolizes, and eliminates a drug over time.

The nave of Chartres Cathedral, an example of awe-inspiring sacred architecture

Phenomenology of Religion

Overview The phenomenology of religion is a methodological approach within religious studies that aims to describe religious experience, symbol, and expression as they present themselves to believers, deliberately setting aside, or bracketing, questions about the objective truth or falsity of the beliefs being described. This approach prioritizes careful, empathetic description over causal or reductive explanation.

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The phenomenology of religion is an approach to religious studies that seeks to describe religious experience and expression as they appear to believers, before explanatory judgment.

An example of a deceptive scam warning used in phishing-style attacks

Phishing

Phishing is a cyberattack technique in which an attacker impersonates a trustworthy person, organization, or system in order to trick a target into revealing sensitive information, such as login credentials or financial details, or into taking a harmful action, such as installing malware or transferring money. The name is a deliberate play on fishing, reflecting

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A cyberattack technique in which an attacker impersonates a trustworthy party to trick a target into revealing information or taking a harmful action.

The 2018 International Phonetic Alphabet chart, showing consonant and vowel symbols in grids

Phoneme

In simple terms A phoneme is the smallest unit of sound that can change a word’s meaning in a particular language. SIL Global’s Glossary of Linguistic Terms calls it the smallest contrastive unit in a language’s sound system, and contrastive is the whole point: swap one phoneme and you have a different word. English rip

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A phoneme is the smallest unit of sound that can change the meaning of a word in a particular language.

View from the Window at Le Gras, the oldest surviving photograph, by Joseph Nicephore Niepce

Photography

Photography is the process and art of capturing a permanent image using light, originally through a light-sensitive chemical surface and today increasingly through digital sensors, a technology whose basic chemical and optical principles were worked out independently by several inventors in the early nineteenth century. Early invention French inventor Joseph Nicephore Niepce produced the earliest

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The process and art of capturing a permanent image using light, chemically or digitally.

A press photographer uploading images on location

Photojournalism

Photojournalism is the practice of telling news stories primarily through photographs, capturing significant moments, events, and conditions in ways that convey information and emotional impact that text alone may not fully achieve. It spans a wide range of subjects, from breaking news and conflict coverage to documentary projects exploring social issues over extended periods. Ethical

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The practice of telling news stories primarily through photographs.

A green leaf lit from behind by sunlight, showing its network of veins.

Photosynthesis

In simple terms Photosynthesis is how plants, algae and some bacteria make their own food. They use energy from sunlight to turn carbon dioxide and water into sugars. Oxygen comes out as a byproduct. Almost every breath you take depends on it. How it works Three inputs are needed: carbon dioxide, water and light. Carbon

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Photosynthesis is how plants, algae and some bacteria use sunlight to turn carbon dioxide and water into sugars, releasing oxygen.

An outdoor CCTV security camera mounted on a building wall

Physical Security

Overview Physical security covers the tangible measures an organization puts in place to prevent unauthorized people from physically reaching a facility, piece of equipment, or other protected asset. It complements rather than replaces cybersecurity, since a hacker who cannot breach a network remotely might instead attempt to walk into a data center and access equipment

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Physical security refers to measures designed to prevent unauthorized physical access to a facility, equipment, or resource.