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Cycle, Nitrogen -- See Nitrogen Cycle


The circulation of nitrogen in nature, consisting of a cycle of biochemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by animals, plants, bacteria, and fungi, eventually returning to the atmosphere by bacterial decomposition of organic matter
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Cycle of Guillaume d'Orange -- See Guillaume d'Orange (Chansons de geste)


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Cycle, Ovarian -- See Menstrual Cycle


The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase
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Cycle, Rankine -- See Rankine cycle


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Cycle-rickshaws -- See Pedicabs


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Cycle routes -- See Bicycle trails


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Cycle, Sleep-wake -- See Sleep-wake cycle


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Cycle, Steam -- See Rankine cycle


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Cycle, Sunspot -- See Solar cycle


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Cycle-Transition Point, Cell -- See Cell Cycle Checkpoints


Regulatory signaling systems that control the progression through the CELL CYCLE. They ensure that the cell has completed, in the correct order and without mistakes, all the processes required to replicate the GENOME and CYTOPLASM, and divide them equally between two daughter cells. If cells sense they have not completed these processes or that the environment does not have the nutrients and growth hormones in place to proceed, then the cells are restrained (or "arrested") until the processes are completed and growth conditions are suitable
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Cycle veille-sommeil. : Brain control of wakefulness and sleep / Mircea Steriade and Robert W. McCarley  2005 1
 

Cycle, Water -- See Water Cycle


Circulation of water among various ecological systems, in various states, on, above, and below the surface of the earth
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  Cycles -- 14 Related Subjects   14
Cycles.   18
 

Cycles, Algebraic -- See Algebraic cycles


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Cycles and paths (Graph theory) -- See Paths and cycles (Graph theory)


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Cycles and subschemes Algebraic geometry Algebraic cycles : Hodge theory, complex geometry, and representation theory : NSF-CBMS Regional Conference in Mathematics, June 18, 2012, Texas Christian University, Fort Worth, Texas / Robert S. Doran, Greg Friedman, Scott Nollet, editors  2014 1
Cycles and subschemes Algebraic geometry Parametrization (Chow and Hilbert schemes) : Commutative algebra and its connections to geometry : Pan-American Advanced Studies Institute, August 3--14, 2009, Universidade Federal de Pernambuco, Olinda, Brazil / Alberto Corso, Claudia Polini, editors  2011 1
Cycles and subschemes Algebraic geometry Transcendental methods, Hodge theory   2
 

Cycles, Audit -- See Audit cycles


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Cycles (Bicycles) -- See Bicycles


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Cycles, Cell -- See Cell Cycle


The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE
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Cycles, Cell Division -- See Cell Cycle


The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE
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Cycles, Circadian -- See Circadian rhythms


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Cycles -- Congresses : Vico and Joyce / edited by Donald Phillip Verene  1987 1
 

Cycles, Dark-Light -- See Photoperiod


The time period of daily exposure that an organism receives from daylight or artificial light. It is believed that photoperiodic responses may affect the control of energy balance and thermoregulation
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Cycles, Daylight -- See Photoperiod


The time period of daily exposure that an organism receives from daylight or artificial light. It is believed that photoperiodic responses may affect the control of energy balance and thermoregulation
  1
Cycles économiques.   5
Cycles économiques -- Méthodes statistiques. : Business cycles : durations, dynamics, and forecasting / Francis X. Diebold and Glenn D. Rudebusch  1999 1
Cycles économiques -- Recherche. : Frontiers of business cycle research / Thomas F. Cooley, editor  c1995 1
 

Cycles, Endometrial -- See Menstrual Cycle


The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase
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Cycles géologiques. : Numerical adventures with geochemical cycles / James C.G. Walker  1991 1
 

Cycles, Hydrologic -- See Water Cycle


Circulation of water among various ecological systems, in various states, on, above, and below the surface of the earth
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Cycles in literature. : Fortune's wheel : Dickens and the iconography of women's time / Elizabeth A. Campbell  2003 1
 

Cycles, Life -- See Life Cycle Stages


The continuous sequence of changes undergone by living organisms during the post-embryonic developmental process, such as metamorphosis in insects and amphibians. This includes the developmental stages of apicomplexans such as the malarial parasite, PLASMODIUM FALCIPARUM
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Cycles, Life (Biology) -- See Life cycles (Biology)


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Cycles, Light -- See Photoperiod


The time period of daily exposure that an organism receives from daylight or artificial light. It is believed that photoperiodic responses may affect the control of energy balance and thermoregulation
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Cycles, Light-Dark -- See Photoperiod


The time period of daily exposure that an organism receives from daylight or artificial light. It is believed that photoperiodic responses may affect the control of energy balance and thermoregulation
  1
 

Cycles, Limit -- See Limit cycles


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  Cycles (Literature) -- 2 Related Subjects   2
Cycles (Literature)   17
Cycles longs (économie politique) : Rethinking industrial relations : mobilization, collectivism, and long waves / John Kelly  1998 1
 

Cycles, Lunar -- See Moon


The natural satellite of the planet Earth. It includes the lunar cycles or phases, the lunar month, lunar landscapes, geography, and soil
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Cycles -- Mathematical models   3
 

Cycles, Menstrual -- See Menstrual Cycle


The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase
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Cycles, Moon -- See Moon


The natural satellite of the planet Earth. It includes the lunar cycles or phases, the lunar month, lunar landscapes, geography, and soil
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Cycles (Motorcycles) -- See Motorcycles


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Cycles, Nitrogen -- See Nitrogen Cycle


The circulation of nitrogen in nature, consisting of a cycle of biochemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by animals, plants, bacteria, and fungi, eventually returning to the atmosphere by bacterial decomposition of organic matter
  1
 

Cycles, Ovarian -- See Menstrual Cycle


The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase
  1
Cycles -- Periodicals : Biological rhythm research (Online)  1994- 1
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