As of the early twenty-first century, the chemical and physical properties of fullerenes are still under heavy study, in both pure and applied research labs. In April 2003, fullerenes were under study for potential medicinal use — binding specific antibiotics to the structure to target resistant bacteria and even target certain cancer cells such as melanoma. In the October 2005 issue of Chemistry and Biology, an article [1] describing the use of fullerenes as light-activ ...

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Fullerene, Fullerene - Naming, Fullerene - Buckminsterfullerene, Fullerene - Prediction and discovery, Fullerene - Properties, Fullerene - Possible dangers, Fullerene - Fullerene extract mixture C60/C70 solubility, Fullerene - Diffraction of fullerene, Fullerene - Notes, Fullerene - Mathematics of fullerenes, Fullerene - Media

Read more here: » Fullerene: Encyclopedia II - Fullerene - Properties

These harmless arachnids are known for their exceptionally long walking legs, compared to body size. The difference between harvestmen and spiders is that in harvestmen the two main body sections (the abdomen and cephalothorax, or prosoma and opisthosoma) are nearly joined, so that they appear to be one oval structure. They have two eyes in the middle of their heads, oriented sideways. They have a pair of prosomatic scent glands that secrete a peculiar smelling fluid when disturbed. Harvestmen do not have silk glands and do not possess poison glands, ...

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Opiliones, Opiliones - Physical description, Opiliones - Behavior, Opiliones - Endangered status, Opiliones - A venomous myth, Opiliones - Other names

Read more here: » Opiliones: Encyclopedia II - Opiliones - Physical description

The functional group of an alcohol is a hydroxyl group bonded to an sp3 hybridized carbon. It can therefore be regarded as a derivative of water, with an alkyl group replacing one of the hydrogens. If an aryl group is present rather than an alkyl, the compound is generally called a phenol rather than an alcohol. The oxygen in an alcohol has a bond angle of around 109° (c.f. 104.5° in water), and two nonbonded electron pairs. The O-H bond in methanol (CH3OH) is around 96 picometres long. Alcohol - Primary se ...

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Alcohol, Alcohol - Structure, Alcohol - Primary secondary and tertiary alcohols, Alcohol - Methanol & ethanol, Alcohol - Uses, Alcohol - Sources, Alcohol - Nomenclature, Alcohol - Systematic names, Alcohol - Etymology, Alcohol - Physical and chemical properties, Alcohol - Toxicity, Alcohol - Preparation of alcohols, Alcohol - Laboratory, Alcohol - Industrial, Alcohol - Reactions of alcohols, Alcohol - Deprotonation, Alcohol - Nucleophilic substitution, Alcohol - Dehydration, Alcohol - Esterification, Alcohol - Oxidation

Read more here: » Alcohol: Encyclopedia II - Alcohol - Structure

The aldehyde functional group is a carbon atom bonded to a carbonyl group and a hydrogen atom. Aldehyde - α carbon & α hydrogen. An α (alpha) carbon is a carbon adjacent to a carbonyl group. An α hydrogen is a hydrogen atom bonded to the α carbon. The pKa of an α hydrogen is 20. Aldehyde - Carbonyl group. The other molecules containing carbonyl group are: Ke ...

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Aldehyde, Aldehyde - Structure, Aldehyde - α carbon & α hydrogen, Aldehyde - Carbonyl group, Aldehyde - Nomenclature, Aldehyde - Physical properties, Aldehyde - Chemistry, Aldehyde - Preparation, Aldehyde - Common reactions, Aldehyde - Nucleophilic addition, Aldehyde - Keto-enol tautomerism, Aldehyde - Oxidation & Reduction, Aldehyde - Examples of Aldehydes, Aldehyde - Etymology

Read more here: » Aldehyde: Encyclopedia II - Aldehyde - Structure

Definition and meaning of Physical Hazard :

Physical Hazard: Any hazard arising from the material, structural, or operational features of the risk itself apart from the persons owning or managing it.

(Source: InsWeb)

Also see these pages: Physical Hazard , Insurance, Insurance Sitemap, Insurance Dictionary - P

Definition and meaning of Physical Hazard :

Physical Hazard: Any hazard arising from the material, structural, or operational features of the risk itself apart from the persons owning or managing it.

(Source: InsWeb)

Also see these pages: Physical Hazard , Insurance, Insurance Sitemap, Insurance Dictionary - P

Worm compost is usually too rich for use as a seed compost, but is useful as a top layer of soil or an addition to potting composts. Some types of pitted seeds are reportedly easier to germinate when placed in vermicompost for several months. Vermicompost is beneficial for soil in three ways: It improves the physical structure of the soil. It improves the biological properties of the soil (enrichment of micro-organisms, addition of growth hormones such as auxins and gibberellic acid, and addition of enzymes, such as phosphates, cellulase, etc.). It attracts deep- ...

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Vermicompost, Vermicompost - Bins, Vermicompost - Small scale, Vermicompost - Large scale, Vermicompost - Starting Off, Vermicompost - Bedding, Vermicompost - Temperature, Vermicompost - Kitchen waste, Vermicompost - Feeding methods, Vermicompost - Problems, Vermicompost - Vermicompost properties

Read more here: » Vermicompost: Encyclopedia II - Vermicompost - Vermicompost properties

Waves can be described using a number of standard variables including: frequency, wavelength, amplitude and period. The amplitude of a wave is the measure of the magnitude of the maximum disturbance in the medium during one wave cycle, and is measured in units depending on the type of wave. For examples, waves on a string have an amplitude expressed as a distance (meters), sound waves as pressure (pascals) and electromagnetic waves as the amplitude of the electric field (volts/meter). The amplitude may be constant (in which case the ...

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Wave, Wave - The medium which carries a wave, Wave - Examples of waves, Wave - Characteristic properties, Wave - Transverse and longitudinal waves, Wave - Polarization, Wave - Physical description of a wave, Wave - Travelling waves, Wave - Propagation through strings, Wave - The wave equation

Read more here: » Wave: Encyclopedia II - Wave - Physical description of a wave

Since antiquity, people have tried to understand the behavior of matter: why unsupported objects drop to the ground, why different materials have different properties, and so forth. Also a mystery was the character of the universe, such as the form of the Earth and the behavior of celestial objects such as the Sun and the Moon. Several theories were proposed; most of them were wrong, but this is part of the nature of the scientific enterprise, and even modern theories of quantum mechanics and relativity are merely considered "theories that h ...

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History of physics, History of physics - Antiquity, History of physics - Greek contributions to physics, History of physics - Middle-Eastern contributions to physics, History of physics - Indian contributions to physics, History of physics - The Middle Ages, History of physics - The scientific revolution, History of physics - 16th century, History of physics - 17th century, History of physics - 18th century, History of physics - 19th century, History of physics - 20th century, History of physics - Developments since 1990, History of physics - Developments since 2000, History of physics - Notes

Read more here: » History of physics: Encyclopedia II - History of physics - Antiquity

This balancing of agency and structure is referred to as the duality of structure, so as to avoid extremes of structural or agent determinism. For example, Giddens writes: "Human history is created by intentional activities but is not an intended project" (p. 27). For Giddens, structures are rules and resources (sets of transformation relations) organized as properties of social systems. The theory employs a recursive notion of actions constrained and enabled by structures which are produced and reproduced by that action. Consequently ...

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Theory of structuration, Theory of structuration - The duality of structure, Theory of structuration - Types of Structures, Theory of structuration - Change, Theory of structuration - Technology, Theory of structuration - Related

Read more here: » Theory of structuration: Encyclopedia II - Theory of structuration - The duality of structure

Protein - Components and synthesis. Main articles: Amino acid and Protein biosynthesis Proteins are biopolymers built from 40 different L-alpha-amino acids. Proteins are assembled from amino acids using information present in genes. Genes are transcribed into RNA, RNA is then subject to post-transcriptional modification and control, resulting in a mature mRNA that undergoes translation into a protein. mRNA is translated by ribosomes that match the three-ba ...

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Protein, Protein - Properties of protein, Protein - Components and synthesis, Protein - Structure, Protein - Protein regulation, Protein - Diversity, Protein - Role of protein, Protein - Functions, Protein - Nutrition, Protein - Studying proteins, Protein - History

Read more here: » Protein: Encyclopedia II - Protein - Properties of protein

STRUCTURAL INTEGRATION

Based on the work of Dr. Ida P. Rolf, structural integration is based on the idea the entire structural order of the body needs to be realigned and balanced with the gravitational forces around a “central vertical line” representing gravity’s influence.

Therapeutic intervention is directed toward the myofascial system - the ligaments, muscles, tendons, and surrounding connective tissues.

A practitioner of structural integration has a 10-session cycle of work - they use different angles and degrees of physical pressure to stretch and guide fascia to a place of easier movement. The process is not intended to “cure” symptoms; its goal is to create a more resilient, higher-energy system free of inhibitions due to past trauma.

See: Rolfing.

(See also: STRUCTURAL INTEGRATION, Alternative Health, Massage, Bodywork, Body Mind and Soul)

Modern particle physics research is focused on subatomic particles, which have less structure than atoms. These include atomic constituents such as electrons, protons, and neutrons (protons and neutrons are actually composite particles, made up of quarks), particles produced by radiative and scattering processes, such as photons, neutrinos, and muons, as well as a wide range of exotic particles. Strictly speaking, the term particle is something of a misnomer. The objects studied by particle physics obey the principles of quantu ...

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Particle physics, Particle physics - Subatomic particles, Particle physics - History of particle physics, Particle physics - The Standard Model of particle physics, Particle physics - Experimental particle physics, Particle physics - Theoretical particle physics, Particle physics - Particle physics and reductionism, Particle physics - Public policy and particle physics, Particle physics - The future of particle physics

Read more here: » Particle physics: Encyclopedia II - Particle physics - Subatomic particles

Computational methods are widely used in solid state physics, fluid mechanics and lattice quantum chromodynamics among other areas. Computational physics borrows a number of ideas from computational chemistry - for example, the density functional theory used by computational physicists to calculate properties of solids is basically the same as that used by chemists to calculate the properties of molecules. Many other more general numerical problems fall loosely under the domain of computational physics, although they could easily be c ...

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Computational physics, Computational physics - Challenges in computational physics, Computational physics - Applications of computational physics

Read more here: » Computational physics: Encyclopedia II - Computational physics - Applications of computational physics

Since antiquity, people have tried to understand the behavior of matter: why unsupported objects drop to the ground, why different materials have different properties, and so forth. Also a mystery was the character of the universe, such as the form of the Earth and the behavior of celestial objects such as the Sun and the Moon. Several theories were proposed; most of them were wrong, but this is part of the nature of the scientific enterprise, and even modern theories of quantum mechanics and relativity are merely considered "theories that h ...

See also:

History of physics, History of physics - Antiquity, History of physics - Middle-Eastern contributions to physics, History of physics - Indian contributions to physics, History of physics - The Middle Ages, History of physics - The scientific revolution, History of physics - 16th century, History of physics - 17th century, History of physics - 18th century, History of physics - 19th century, History of physics - 20th century, History of physics - Developments since 1990, History of physics - Developments since 2000, History of physics - Notes

Read more here: » History of physics: Encyclopedia II - History of physics - Antiquity