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Autogenic Alteration
Autogenesis may refer to: * Abiogenesis, the origination of life from non-living things, as believed by Aristotle and in modern evolutionary theory * Orthogenesis, a discredited evolutionary idea that hypothesised a directed teleological form of evolution * "Christ the Autogenes" in gnostic texts such as the Secret Book of John * Autogeny, the reproductive strategy in insects in which the bodily food reserves of an adult female will support reproduction without feeding, particularly without a blood meal before oviposition * The highest stage in the development of complex adaptive systems in Viable System Theory * Autogenesis, a proposed kind of thermodynamic synergy that the first living creature may have possessed Autogenous may refer to: * Autogenous tissue in autotransplantation (tissue transplanted from elsewhere in an individual's own body) * Autogenous weld, using no filler metal * Autogenous grinding mill, in which ore grinds itself through tumbling impacts * Autogenous mode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abiogenesis
In biology, abiogenesis (from a- 'not' + Greek bios 'life' + genesis 'origin') or the origin of life is the natural process by which life has arisen from non-living matter, such as simple organic compounds. The prevailing scientific hypothesis is that the transition from non-living to living entities on Earth was not a single event, but an evolutionary process of increasing complexity that involved the formation of a habitable planet, the prebiotic synthesis of organic molecules, molecular self-replication, self-assembly, autocatalysis, and the emergence of cell membranes. Many proposals have been made for different stages of the process. The study of abiogenesis aims to determine how pre-life chemical reactions gave rise to life under conditions strikingly different from those on Earth today. It primarily uses tools from biology and chemistry, with more recent approaches attempting a synthesis of many sciences. Life functions through the specialized chemistry of carbon and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthogenesis
Orthogenesis, also known as orthogenetic evolution, progressive evolution, evolutionary progress, or progressionism, is an obsolete biological hypothesis that organisms have an innate tendency to evolve in a definite direction towards some goal (teleology) due to some internal mechanism or "driving force". According to the theory, the largest-scale trends in evolution have an absolute goal such as increasing biological complexity. Prominent historical figures who have championed some form of evolutionary progress include Jean-Baptiste Lamarck, Pierre Teilhard de Chardin, and Henri Bergson. The term ''orthogenesis'' was introduced by Wilhelm Haacke in 1893 and popularized by Theodor Eimer five years later. Proponents of orthogenesis had rejected the theory of natural selection as the organizing mechanism in evolution for a rectilinear model of directed evolution. With the emergence of the modern synthesis, in which genetics was integrated with evolution, orthogenesis and othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnosticism
Gnosticism (from grc, γνωστικός, gnōstikós, , 'having knowledge') is a collection of religious ideas and systems which coalesced in the late 1st century AD among Jewish Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ... and early Christian sects. These various groups emphasized personal spiritual knowledge (''gnosis'') above the orthodox teachings, traditions, and authority of religious institutions. Gnostic cosmogony generally presents a distinction between a supreme, hidden God and a malevolent demiurge, lesser divinity (sometimes associated with the Yahweh of the Old Testament) who is responsible for creating the nature, material universe. Consequently, Gnostics considered material existence flawed or evil, and held the principal element of salvation to be direct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secret Book Of John
The ''Apocryphon of John'', also called the ''Secret Book of John'' or the ''Secret Revelation of John'', is a 2nd-century Sethian Gnostic Christian pseudographical text attributed to John the Apostle. It is one of the texts addressed by Irenaeus in his '' Against Heresies,'' placing its composition before 180 CE. It is presented as describing Jesus appearing and giving secret knowledge (gnosis) to his disciple John. The author describes it as having occurred after Jesus had "gone back to the place from which he came". Overview Many second-century Christians, both Gnostic and orthodox, hoped to receive a transcendent personal revelation such as Paul the Apostle reported to the church at Corinth () or that John experienced on the isle of Patmos, which inspired the ''Book of Revelation''. As ''Acts'' narrates what happened after the time Jesus ascended to heaven, so the ''Apocryphon of John'' begins at the same point but relates how Christ reappeared to John. The opening w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autogeny
In entomology, anautogeny is a reproductive strategy in which an adult female insect must eat a particular sort of meal (generally vertebrate blood) before laying eggs in order for her eggs to mature. This behavior is most common among dipteran insects, such as mosquitoes. Anautogenous animals often serve as vectors for infectious disease in their hosts because of their contact with hosts' blood. The opposite trait (needing no special food as an adult to successfully reproduce) is known as autogeny. Factors governing anautogeny Anautogenous insects generally reach adulthood without sufficient reserves of nutrients (particularly protein) to produce viable eggs, necessitating additional feeding as adults. A high-protein meal, usually of blood, allows the production of yolk to nourish the eggs and makes reproduction possible. This blood is typically obtained through ectoparasitism on large vertebrates. However, even individuals who do have the reserves needed to produce viable eggs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viable System Theory
Viable system theory (VST) concerns cybernetic processes in relation to the development/evolution of dynamical systems. They are considered to be living systems in the sense that they are complex and adaptive, can learn, and are capable of maintaining an autonomous existence, at least within the confines of their constraints. These attributes involve the maintenance of internal stability through adaptation to changing environments. One can distinguish between two strands such theory: formal systems and principally non-formal system. Formal viable system theory is normally referred to as viability theory, and provides a mathematical approach to explore the dynamics of complex systems set within the context of control theory. In contrast, principally non-formal viable system theory is concerned with descriptive approaches to the study of viability through the processes of control and communication, though these theories may have mathematical descriptions associated with them. Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incomplete Nature
''Incomplete Nature: How Mind Emerged from Matter'' is a 2011 book by biological anthropologist Terrence Deacon. The book covers topics in biosemiotics, philosophy of mind, and the origins of life. Broadly, the book seeks to naturalistically explain "aboutness", that is, concepts like intentionality, meaning, normativity, purpose, and function; which Deacon groups together and labels as ententional phenomena. Core Ideas Deacon's first book, ''The Symbolic Species'' focused on the evolution of human language. In that book, Deacon notes that much of the mystery surrounding language origins comes from a profound confusion about the nature of semiotic processes themselves. Accordingly, the focus of ''Incomplete Nature'' shifts from human origins to the origin of life and semiosis. ''Incomplete Nature'' can be viewed as a sizable contribution to the growing body of work positing that the problem of consciousness and the problem of the origin of life are inexorably linked. De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autotransplantation
Autotransplantation is the organ transplantation, transplantation of Organ (anatomy), organs, Biological tissue, tissues, or even particular proteins from one part of the body to another in the same person (''wikt:auto-, auto-'' meaning "self" in Ancient Greek, Greek). The autologous tissue (also called autogenous, autogeneic, or autogenic tissue) transplanted by such a procedure is called an autograft or autotransplant. It is contrasted with allotransplantation (from other individual of the same species), Syngenic, syngeneic transplantation (grafts transplanted between two genetically identical individuals of the same species) and xenotransplantation (from other species). A common example is the removal of a piece of bone (usually from the hip) and its being ground into a paste for the reconstruction of another portion of bone. Autotransplantation, although most common with blood, bone, or skin, can be used for a wide variety of organs. One of the rare examples is autotransp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autogenous Weld
Autogenous welding is a form of welding in which the filler material is either supplied by melting the base material or is of identical composition. The weld may be formed entirely by melting parts of the base metal, and no additional filler rod is used. There is some variation in the use of this term. Those bodies concerned with teaching the craft skill of welding tend to define it as using no filler rod, i.e. the technique is based purely on the base metal. Those concerned with the welded joint's metallurgy may make no distinction between a filler rod and the base metal, provided that the final metallurgy is identical. Most welding processes may be either autogenous or use additional filler. Some are characteristically autogenous and avoid filler. Some arc welding processes, including such major process such as manual metal arc (stick) welding and MAGS (wire-feed) welding, cannot be used autogenously, as they rely on the consumption of a filler rod to provide the arc. Some p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autogenous Grinding Mill
Autogenesis may refer to: * Abiogenesis, the origination of life from non-living things, as believed by Aristotle and in modern evolutionary theory * Orthogenesis, a discredited evolutionary idea that hypothesised a directed teleological form of evolution * "Christ the Autogenes" in gnostic texts such as the Secret Book of John * Autogeny, the reproductive strategy in insects in which the bodily food reserves of an adult female will support reproduction without feeding, particularly without a blood meal before oviposition * The highest stage in the development of complex adaptive systems in Viable System Theory * Autogenesis, a proposed kind of thermodynamic synergy that the first living creature may have possessed Autogenous may refer to: * Autogenous tissue in autotransplantation (tissue transplanted from elsewhere in an individual's own body) * Autogenous weld, using no filler metal * Autogenous grinding mill, in which ore grinds itself through tumbling impacts * Autogenous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryote
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacteria and Archaea (both prokaryotes) make up the other two domains. The eukaryotes are usually now regarded as having emerged in the Archaea or as a sister of the Asgard archaea. This implies that there are only two domains of life, Bacteria and Archaea, with eukaryotes incorporated among archaea. Eukaryotes represent a small minority of the number of organisms, but, due to their generally much larger size, their collective global biomass is estimated to be about equal to that of prokaryotes. Eukaryotes emerged approximately 2.3–1.8 billion years ago, during the Proterozoic eon, likely as flagellated phagotrophs. Their name comes from the Greek εὖ (''eu'', "well" or "good") and κάρυον (''karyon'', "nut" or "kernel"). Euka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution Of Flagella
The evolution of flagella is of great interest to biologists because the three known varieties of flagella – (eukaryotic, bacterial, and archaeal) each represent a sophisticated cellular structure that requires the interaction of many different systems. Eukaryotic flagellum There are two competing groups of models for the evolutionary origin of the eukaryotic flagellum (referred to as cilium below to distinguish it from its bacterial counterpart). Recent studies on the microtubule organizing center suggest that the most recent ancestor of all eukaryotes already had a complex flagellar apparatus. Endogenous, autogenous and direct filiation models These models argue that cilia developed from pre-existing components of the eukaryotic cytoskeleton (which has tubulin and dynein also used for other functions) as an extension of the mitotic spindle apparatus. The connection can still be seen, first in the various early-branching single-celled eukaryotes that have a microtubule basal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
