Life sciences in the context of Confocal laser scanning microscopy

Bioethics is both a field of study and professional practice, interested in ethical issues related to health (primarily focused on the human, but also increasingly includes animal ethics), including those emerging from advances in biology, medicine, and technologies. It proposes the discussion about moral discernment in society (what decisions are "good" or "bad" and why) and it is often related to medical policy and practice, but also to broader questions as environment, well-being and public health. Bioethics is concerned with the ethical questions that arise in the relationships among life sciences, biotechnology, medicine, politics, law, theology and philosophy. It includes the study of values relating to primary care, other branches of medicine ("the ethics of the ordinary"), ethical education in science, animal, and environmental ethics, and public health.

Paleobiology (or palaeobiology) is an interdisciplinary field that combines the methods and findings found in both the earth sciences and the life sciences. An investigator in this field is known as a paleobiologist.

Paleobiology is closely related to the field of paleontology, although the latter focuses primarily on the study and taxonomic classification of fossil records, while paleobiology incorporates a broader ecological, evolutionary and geological perspectives of the history of life on Earth. It is also not to be confused with geobiology, which focuses more on the contemporary interactions between the modern biosphere and the physical Earth.

Microscopy is the technical field of using microscopes to view subjects too small to be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical, electron, and scanning probe microscopy, along with the emerging field of X-ray microscopy.

Optical microscopy and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beams interacting with the specimen, and the collection of the scattered radiation or another signal in order to create an image. This process may be carried out by wide-field irradiation of the sample (for example standard light microscopy and transmission electron microscopy) or by scanning a fine beam over the sample (for example confocal laser scanning microscopy and scanning electron microscopy). Scanning probe microscopy involves the interaction of a scanning probe with the surface of the object of interest. The development of microscopy revolutionized biology, gave rise to the field of histology and so remains an essential technique in the life and physical sciences. X-ray microscopy is three-dimensional and non-destructive, allowing for repeated imaging of the same sample for in situ or 4D studies, and providing the ability to "see inside" the sample being studied before sacrificing it to higher resolution techniques. A 3D X-ray microscope uses the technique of computed tomography (microCT), rotating the sample 360 degrees and reconstructing the images. CT is typically carried out with a flat panel display. A 3D X-ray microscope employs a range of objectives, e.g., from 4X to 40X, and can also include a flat panel.

In research design, especially in psychology, social sciences, life sciences and physics, operationalization (or operationalisation) is a process of defining the measurement of a phenomenon which is not directly measurable, though its existence is inferred from other phenomena. Operationalization thus defines a fuzzy concept so as to make it clearly distinguishable, measurable, and understandable by empirical observation. In a broader sense, it defines the extension of a concept—describing what is and is not an instance of that concept. For example, in medicine, the phenomenon of health might be operationalized by one or more indicators like body mass index or tobacco smoking. As another example, in visual processing the presence of a certain object in the environment could be inferred by measuring specific features of the light it reflects. In these examples, the phenomena are difficult to directly observe and measure because they are general/abstract (as in the example of health) or they are latent (as in the example of the object). Operationalization helps infer the existence, and some elements of the extension, of the phenomena of interest by means of some observable and measurable effects they have.

Sometimes multiple or competing alternative operationalizations for the same phenomenon are available. Repeating the analysis with one operationalization after the other can determine whether the results are affected by different operationalizations. This is called checking robustness. If the results are (substantially) unchanged, the results are said to be robust against certain alternative operationalizations of the checked variables.

Monogenism or sometimes monogenesis is the theory of human origins which posits a common descent for all humans. The negation of monogenism is polygenism. This issue was hotly debated in the Western world in the nineteenth century, as the assumptions of scientific racism came under scrutiny both from religious groups and in the light of developments in the life sciences and human science. It was integral to the early conceptions of ethnology.

Modern scientific views favor this theory, with the most widely accepted model for human origins being the "Out of Africa" theory.

Funga is all the fungi of a particular region, habitat, or geological period. In life sciences, "funga" is a recent term (2000s) for the kingdom Fungi similar to the longstanding fauna for animals and flora for plants. The term seeks to simplify projects oriented toward implementation of educational and conservation goals. It highlights parallel terminology referring to treatments of these macroorganisms in particular geographical areas. An official proposal for the term occurred in 2018, despite previous use.

The Species Survival Commission (SSC) of the International Union for Conservation of Nature (IUCN) in August 2021 called for the recognition of fungi as one of three kingdoms of life, and critical to protecting and restoring Earth. Funga was recommended by the IUCN in 2021. They ask that the phrase animals and plants be replaced by animals, fungi, and plants, and fauna and flora by fauna, flora, and funga.

A hammer mill is a mill whose purpose is to shred or crush aggregate material into smaller pieces by the repeated blows of small hammers. These machines have numerous industrial applications, including:

• Ethanol plants (grains)
• A farm machine, which mills grain into coarse flour to be fed to livestock
• Fluff pulp defiberizing
• Fruit juice production
• Grinding used shipping pallets for mulch
• Milling grain
• Livestock, poultry, and aquatic feed production
• Sawmills, size reduction of trim scrap and planer shavings into boiler fuel or mulch

Healthcare in the United States is largely provided by private sector healthcare facilities, and paid for by a combination of public programs, county indigent health care programs, private insurance, and out-of-pocket payments. The U.S. is the only developed country without a system of universal healthcare, and, as of 2023, 7.9% of the population does not have health insurance. The United States spends more on healthcare than any other country, both in absolute terms and as a percentage of GDP; however, this expenditure does not necessarily translate into better overall health outcomes compared to other developed nations. In 2022, the United States spent approximately 17.8% of its Gross Domestic Product (GDP) on healthcare, significantly higher than the average of 11.5% among other high-income countries. Coverage varies widely across the population, with certain groups, such as the elderly, disabled and low-income individuals receiving more comprehensive care through government programs such as Medicaid and Medicare.

The U.S. healthcare system has been the subject of significant political debate and reform efforts, particularly in the areas of healthcare costs, insurance coverage, and the quality of care. Legislation such as the Affordable Care Act of 2010 has sought to address some of these issues, though challenges remain. Uninsured rates have fluctuated over time, and disparities in access to care exist based on factors such as income, race, and geographical location. The private insurance model predominates, and employer-sponsored insurance is a common way for individuals to obtain coverage.

In the life sciences, mass flow, also known as mass transfer and bulk flow, is the movement of fluids down a pressure or temperature gradient. As such, mass flow is a subject of study in both fluid dynamics and biology. Examples of mass flow include blood circulation and transport of water in vascular plant tissues. Mass flow is not to be confused with diffusion which depends on concentration gradients within a medium rather than pressure gradients of the medium itself.

Wageningen (Dutch pronunciation: [ˈʋaːɣənɪŋə(n)] ) is a municipality and a historic city in the central Netherlands, in the province of Gelderland. It is famous for Wageningen University, which specialises in life sciences. The municipality had a population of 39,635 in 2021, of which many thousands are students from over 150 countries.

Science advanced dramatically during the 20th century. There were new and radical developments in the physical, life and human sciences, building on the progress made in the 19th century.

The development of post-Newtonian theories in physics, such as special relativity, general relativity, and quantum mechanics led to the development of nuclear weapons. New models of the structure of the atom led to developments in theories of chemistry and the development of new materials such as nylon and plastics. Advances in biology led to large increases in food production, as well as the elimination of diseases such as polio.

North Carolina State University (NC State, North Carolina State, NC State University, or NCSU) is a public land-grant research university in Raleigh, North Carolina, United States. Founded in 1887 and part of the University of North Carolina system, it is the largest university in the Carolinas. The university forms one of the corners of the Research Triangle together with Duke University in Durham and the University of North Carolina at Chapel Hill. It is classified among "R1: Doctoral Universities – Very high research activity".

The North Carolina General Assembly established North Carolina College of Agriculture and Mechanic Arts on March 7, 1887, as a land-grant college. The college underwent several name changes and officially became North Carolina State University at Raleigh in 1965. However, by longstanding convention, the "at Raleigh" portion is usually omitted. Today, NC State has an enrollment of more than 39,000 students, making it among the largest in the country. NC State has historical strengths in engineering, statistics, agriculture, life sciences, textiles, and design and offers bachelor's degrees in 106 fields of study. The graduate school offers master's degrees in 104 fields, doctoral degrees in 61 fields, and a Doctor of Veterinary Medicine.

PubMed is an openly accessible, free database which includes primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system of information retrieval.

From 1971 to 1997, online access to the MEDLINE database was provided via computer, using phone lines primarily through institutional facilities, such as university libraries. PubMed, first released in January 1996, ushered in the era of private, free, home- and office-based MEDLINE searching. It was released alongside with "Internet Grateful Med" (web-version of Grateful Med). In 2001 Grateful Med was deleted and entirely replaced by PubMed. The PubMed system was offered free to the public starting in June 1997.