Results 141 to 150 of about 1,559,469 (190)
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Nature, 1971
THE smallest spherical cell capable of an independent existence is believed to be, in theory, 100 nm. Bodies of this size have been found by electron microscopy in cultures of mycoplasmas but they are probably inviable1,3,4. The existence of living mycoplasmas as small as 125 nm is indicated by their ability to pass through filters of known porosity5–8,
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THE smallest spherical cell capable of an independent existence is believed to be, in theory, 100 nm. Bodies of this size have been found by electron microscopy in cultures of mycoplasmas but they are probably inviable1,3,4. The existence of living mycoplasmas as small as 125 nm is indicated by their ability to pass through filters of known porosity5–8,
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Ecological determinism increases with organism size
Ecology, 2012After much debate, there is an emerging consensus that the composition of many ecological communities is determined both by species traits, as proposed by niche theory, as well as by chance events. A critical question for ecology is, therefore, which attributes of species predict the dominance of deterministic or stochastic processes.
Vinicius F, Farjalla +8 more
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Crystal Size and Organization in Bone
Connective Tissue Research, 1989Size measurements of dispersed rat bone crystals show that with age a greater proportion exceeds 400 A in length. The surface fractures of more heavily mineralized bones tend to be smooth and stepped, whereas those of less mineralized bones are fibrous. These observations combined with information reported elsewhere on the crystal-collagen relations in
S, Weiner, W, Traub
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Organization Size and Failure Among Health Maintenance Organizations
American Sociological Review, 1992We extend the organizational ecology literature by examining the relationship between organization size and failure. Contrary to the typical monotonically declining relationship between organization size and failure rates found in ecology research, we show that this relationship varies by type of organization.
Douglas R. Wholey +2 more
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Economic Size of Organizations
California Management Review, 1968A popular conception is that large organizations are inherently inefficient. In this article the conclusion is reached that size need not necessarily cause managerial inefficiencies, even in the largest concerns.
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Sizing the Selling Organization
2004Every sales force has a size, defined by the number of salespeople. That size changes over time as the company evolves its products and adapts to different market conditions. Companies use many different rules and approaches to determine the size of their sales force. Some of these rules and approaches often lead to poor decisions.
Andris A. Zoltners +2 more
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Technology, Size, and Organization Structure
Sociology, 1972A study of 82 business organizations provides data on the disputed question of whether organization technology or organization size is more closely associated with the elements of organization structure. Technological variables are found to be associated with structure in certain definable respects, but, on the whole, size enjoys a much higher ...
John Child, Roger Mansfield
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Relationships Between Organization Size and Efficiency
Management Science, 1960The relation between productivity, efficiency and size of a technical organization as affected by internally generated and circulated paperwork is analyzed. It is shown that there exists an upper bound to total productive output which is independent of the number of employees; and that as the organization size is increased the efficiency generally ...
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Micron-Sized Ultrathin Metal–Organic Framework Sheet
Journal of the American Chemical Society, 2020The two-dimensional thin metal-organic frameworks (MOF) sheet has emerged as a promising hybrid material for applications in catalysis and optoelectronic devices. However, the small size and large thickness of an MOF sheet still pose barriers toward its potential applications.
Yuewu Zhao, Jine Wang, Renjun Pei
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Cell competition in vertebrate organ size regulation
WIREs Developmental Biology, 2014The study of animal organ size determination has provided evidence of the existence of organ‐intrinsic mechanisms that ‘sense’ and adjust organ growth. Cell competition, a form of cell interaction that equalizes cell population growth, has been proposed to play a role in organ size regulation. Cell competition involves a cell‐context dependent response
Alfredo I, Penzo-Méndez, Ben Z, Stanger
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