Heterogeneous is an adjective used to describe something that has a large amount of variants or different forms. Derived from the Greek; heteros or 'other' and genos or 'kind'. It is the antonym of homogeneous, which means that an object or system consists of many identical items. In Lexical semantics, opposites are words that lie in an inherently incompatible binary relationship as in the opposite pairs male: female, long: short Matters of a quantum can exist in homogenous or in heterogeneous or in combined distributions. Matter is commonly defined as being anything that has mass and that takes up space. This article describes the distribution function as used in physics The term is often used in a scientific (such as a kind of catalyst), mathematical, sociological or statistical context. Science (from the Latin scientia, meaning " Knowledge " or "knowing" is the effort to discover, and increase human understanding Catalysis is the process in which the rate of a Chemical reaction is increased by means of a Chemical substance known as a catalyst Mathematics is the body of Knowledge and Academic discipline that studies such concepts as Quantity, Structure, Space and Sociology (from Latin: socius "companion" and the suffix -ology "the study of" from Greek λόγος lógos "knowledge" Statistics is a mathematical science pertaining to the collection analysis interpretation or explanation and presentation of Data.

A heterogeneous compound, mixture, reaction or other such object is one that consists of many different items, which are often not easily sorted or separated, though they are clearly distinct.

A heterogeneous mixture is a mixture of two or more compounds. In Chemistry, a mixture is a substance made by combining two or more different materials without a chemical reaction occurring (the objects do not bond together A chemical compound is a substance consisting of two or more different elements chemically bonded together in a fixed proportion by Mass. In chemical kinetics, a heterogeneous reaction is one that takes place at the interface of two or more i. e. between a solid and a gas, a liquid and a gas, or a solid and a liquid.

1 Statistics

Statistics

In meta analysis the term refers to the presence of multiple non-random intercepts in a dataset. An amorphous solid is a Solid in which there is no Long-range order of the positions of the Atoms (Solids in which there is long-range atomic order are Zygosity refers to the genetic condition of a Zygote. In genetics zygosity describes the similarity or dissimilarity of DNA between Homologous A heteroazeotrope is an Azeotrope where the vapour phase coexists with two liquid phases Homogenization (or homogenisation) is a term used in many fields such as Chemistry, Agricultural science, Food technology, Sociology Zygosity refers to the genetic condition of a Zygote. In genetics zygosity describes the similarity or dissimilarity of DNA between Homologous Mesoporous silicates are Silicates with a special morphology Background Porous inorganic solids have found great utility as Catalysts and sorption In Statistics, a meta-analysis combines the results of several studies that address a set of related research hypotheses In Meta-analysis of clinical studies which involves comparing and quantifying the effects of separate studies, heterogeneity refers to the differences in study populations or in methodologies used to study them that may have the effect of reaching differing conclusions. This is a problem as it calls into question conclusions that are drawn from studies and reduces their comparability. The following concepts are important in understanding the importance of heterogeneity in meta-analytical research.

Clinical Heterogeneity:

Heterogeneity resulting from differences in clinical features of a population that is being studied or treated.

Methodological Heterogeneity:

Heterogeneity resulting from the differential use of study methodology. These may lead to different conclusions in different studies, despite their clinical characteristics being the same.

Statistical Heterogeneity:

Heterogeneity resulting from either clinical or statistical heterogeneity, which leads to a difference in expected results, more than which can be accounted for by chance.

Systems

In the world of enterprise computing, heterogeneous data is a mix of data from two or more sources, often of two or more formats, e. Debt AIDS Trade in Africa (or DATA) is a Multinational non-government organization founded in January 2002 in London by U2 's g. , SQL and XML. Don't change "Extensible"

Distributed systems are called heterogeneous if they contain many different types of hardware and software.

Social and human science

Homogeneity and heterogeneity are terms used to describe variety in many aspects of human groups, communities and populations, including cultural, demographic, ethnic and socio-political. Distributed computing deals with Hardware and Software Systems containing more than one processing element or Storage element concurrent In Economics and Social Sciences, 'heterogeneous agents' refers to a set of agents with different properties. Economics is the social science that studies the production distribution, and consumption of goods and services. The social sciences comprise academic disciplines concerned with the study of the social life of human groups and individuals including Anthropology, Communication studies In Economics, an agent is an actor in a model that (generally solves an optimization problem The opposite of 'heterogeneous agents' in economic terminology is 'representative agent'. Economists use the term representative agent to refer to the typical individual of a certain type (for example the typical consumer or the typical firm

General

In taxonomy, a heterogeneous taxon is a taxon that contains a great variety of individuals or sub-taxa; usually this implies that the taxon is an artificial grouping. Taxonomy is the practice and science of classification The word comes from the Greek, taxis (meaning 'order' 'arrangement' and, nomos

Genetics

In genetics, heterogeneity refers to multiple origins causing the same disorder in different individuals.

Allelic heterogeneity

If a number of different mutations occurring the same gene produce disorders, it is said to manifest allelic heterogeneity. History See also History of genetics The existence of genes was first suggested by Gregor Mendel (1822-1884 who in the 1860s studied inheritance This term has been used when a number of different alleles cause a similar phenotype or different phenotypes. A phenotype is any observable characteristic of an Organism, such as its morphology, Development, biochemical or physiological properties

Example diseases:

Different FBN1 mutations causing Marfan's syndrome
Cystic fibrosis is caused by greater than 900 different mutant alleles
Alpha-Thalassemia or sickle cell anemia can be caused by different mutations in alpha-globin gene. Marfan syndrome (or Marfan's syndrome is a genetic disorder of the Connective tissue. Cystic fibrosis (also known as CF, mucoviscoidosis, or mucoviscidosis) is a hereditary disease affecting the exocrine (mucus glands of the lungs Thalassemia (from Greek θαλασσα thalassa sea + αίμα haima blood British spelling "thalassaemia" is an inherited Autosomal recessive Sickle-cell disease or sickle-cell anaemia (or anemia) is a Blood disorder characterized by Red blood cells that assume an abnormal rigid

Locus (Non-allelic) Heterogeneity

If mutations at a number of different loci, usually in different genes, all result in the same disorder (phenotype), such disorder is said to manifest locus heterogeneity.

Example Disease:

Retinitis Pigmentosa has autosomal dominant, autosomal recessive, and X-linked causes. Retinitis pigmentosa ( RP) is a group of genetic Eye conditions

Dictionary

heterogeneous

-adjective

Diverse in kind or nature; composed of diverse parts.
(mathematics) Incommensurable because of different kinds.
(physics): Having more than one phase (solid, liquid, gas) present in a system or process.
(chemistry): Visibly consisting of different components.
(information technology): A network comprising different types of computers, potentially with vastly differing memory sizes, processing power and even basic underlying architecture. Alternatively, a data resource with multiple types of formats.

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