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Topic: Cycle studies

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	[No title]
		The precise cell cycle function(s) of Cdc14p is unknown.
		The first studies of the direct effect of hypoxia on cell cycle activity were performed generally on transformed or oncogenic cells lines.
		This led to the study of the effect of hypoxia on cell cycle activity and progression and cell viability in a variety of mammalian and human cell lines.
	www.lycos.com /info/cell-cycle--studies.html (357 words)

	Flame Imaging Studies of Cycle-by-Cycle Combustion Variation in a SI Four Stroke Engine
		The unusual shape of Cycle 13 is seen to be early throughout the cycle relative to the average cycle, presumably because the flow distortion has caused the flame to grow in two separate large sections, resulting in a larger total burning rate.
		ATDC in cycles 10 and 17; in cycle 10, this is due to the relatively greater progress of burning, compared to other cycles, but in cycle 17 combustion is completed because the flame shape happens to closely conform to the shape of the chamber when it reaches the wall.
		Cycle 25 presumably is a case where the early kernel is blown toward the wall, and is stretched out because of flow divergence there, leading to the flat flame that later develops.
	www.tvu.com /PCycleByCycleweb.htm (9761 words)

	[No title]
		The aim of this study was to investigate whether the phases of the menstrual cycle affect lysine requirement in healthy adult females, as determined by the indicator amino acid oxidation (IAAO) method.
		Five healthy females with regular menstrual cycles were studied at seven graded levels of lysine intake, in random order, with an oral [13C]phenylalanine tracer protocol in both the follicular and luteal phases.
		Within the course of the six-month study, the experimental subjects with irregular flow tended to normalize, although cycle synchronization was not observed as a trend.
	www.lycos.com /info/menstrual-cycle--studies.html (712 words)

	CancerNetwork:
		Studies included in Table 3 contrasted survival in patients treated between days 3 and 12 of the menstrual cycle with survival in those treated during days 0 to 2 or days 13 to 32.
		Animal studies by Hrushesky et al indicated that NK activity varied with estrous cycle and was inversely correlated to metastatic dissemination.[11] In earlier studies of healthy women, who provided three or four blood specimens during a single menstrualcycle, a reduction in NK activity was noted before ovulation, with a subsequent rise later in the cycle.
		In retrospective studies, it is difficult to accurately assess the extent of disease at diagnosis and whether or not irregularly cycling perimenopausal women or women using oral contraceptives have been appropriately excluded from the study.
	www.cancernetwork.com /journals/oncology/o9710c.htm (8676 words)

	Cycle - Wikipedia, the free encyclopedia
		Citric acid cycle, Kreb's cycle, the Born Haber cycle or the Calvin cycle.
		The cycle is a unit of phase angle equivalent to one oscillation, or 2π radians.
		A cycle is an element of a homology class.
	en.wikipedia.org /wiki/Cycles (488 words)

	NSF Program Announcement/Solicitation: Integrated Carbon Cycle Research Program
		Studies of the chemical, biological, ecological, and physical processes driving carbon distribution, transformation and transport within and between terrestrial, atmospheric, and oceanic environments are appropriate for this competition.
		Process studies improve our knowledge of poorly understood chemical, biological, and physical processes operating at a variety of spatial and temporal scales within the carbon cycle by helping to define and quantify key mechanisms responsible for carbon transformations and exchanges between land, sea, and air.
		One of the important lessons learned from two decades of global carbon cycle and climate research is that the utility of focused process studies can be maximized by including global data synthesis and modeling activities as integral components of the research initiative at the outset.
	www.nsf.gov /pubs/2002/nsf02016/nsf02016.htm (4563 words)

	Ecocycle - Benefits of Critical Review in Life-Cycle Studies - 1996-04-01
		By the conclusion of the study, there were over 500 000 data points including data collected from over 60 sites in six countries and four continents.
		Objectives: to ensure the purpose of the study was clearly defined; to ensure that data categories included in and excluded from the system boundary were identified; and to understand how the results of the study would be used.
		Most life-cycle studies report single values for the data categories and are often misleading due to variability in performance between locations and over time.
	www.ec.gc.ca /ecocycle/issue3/en/p13.cfm (792 words)

	PMEL CO2: Carbon Cycle Studies (Site not responding. Last check: 2007-10-12)
		The fate of the other half of the released CO has been a matter of great concern to scientists and politicians over the past few decades.
		The processes relevant to the carbon cycle span the range of scales from molecular to global.
		Our understanding of the current carbon cycle is improving very rapidly thanks to aggressive research in this field.
	www.pmel.noaa.gov /co2/ccstudies (215 words)

	Human sexual response cycle - Wikipedia, the free encyclopedia
		Studies show that the sex flush occurs in approximately 50-75% of females and 25% of males, yet not consistently.
		Both males and females experience quick cycles (typically 0.8 seconds apart) of muscle contraction of the anus and lower pelvic muscles, with women also experiencing uterine and vaginal contractions.
		Males ejaculate approximately 2–5 mL of semen, with the volume varying considerably depending on the period of abstinence and degree of sustained arousal prior to ejaculation.
	en.wikipedia.org /wiki/Human_sexual_response_cycle (1298 words)

	Ch 7. Carbon Cycle
		The global carbon cycle is currently the topic of great interest because of its importance in the global climate system and also because human activities are altering the carbon cycle to a significant degree.
		By studying the ratios of stable isotopes of oxygen that make up the glacial ice, we can estimate the temperature (in the region of the ice) at the time the snow fell (glacial ice is formed by the compression of snow as it gets buried to greater and greater depths).
		This means that, to the extent that the state of the carbon cycle is closely linked to the condition of the global climate, we are pushing the system toward a climate that has not occurred anytime within the last several million years -- not something to be taken lightly.
	www.carleton.edu /departments/geol/DaveSTELLA/Carbon/carbon_intro.htm (1821 words)

	PRISM - Case Studies - Cell Cycle Control in Eukaryotes
		In this case study we consider a probabilistic model of cell cycle control in eukaryotes, a very commonly occurring class of single-celled or multicellular organisms.
		The model is a translation of the formal specification in the biochemical stochastic π-calculus given in [LP03] which studies the relative concentration of a number types of proteins, partaking concurrently in several complex chemical reactions.
		In this approach, the time until a reaction between proteins is modelled as an exponential distribution, and therefore we construct a CTMC model of the system where the states of the CTMC correspond to the number of proteins of each type and the transitions correspond to the possible reactions between the proteins.
	www.cs.bham.ac.uk /~dxp/prism/casestudies/cyclin.php (568 words)

	Physiology or Medicine for 2001 - Press Release
		For all living eukaryotic organisms it is essential that the different phases of the cell cycle are precisely coordinated.
		On the basis of his findings he introduced the concept checkpoint, which means that the cell cycle is arrested when DNA is damaged.
		The amount of CDK-molecules is constant during the cell cycle, but their activities vary because of the regulatory function of the cyclins.
	nobelprize.org /nobel_prizes/medicine/laureates/2001/press.html (1711 words)

	The Relationship Between Menstrual Cycle Phases and Suicide Attempts -- Baca-García et al. 62 (1): 50 -- ...
		the phase of the menstrual cycle by endometrial histology (8,
		in studies of the menstrual cycle in suicidal patients is the
		Lethal hazards of luteal phase of the menstrual cycle.
	www.psychosomaticmedicine.org /cgi/content/full/62/1/50 (4836 words)

	Life Cycle Study
		In the four key areas, the LCI study demonstrates that polystyrene foam products in most cases have environmental burdens that are lower than or comparable to the alternative products studied (see more report highlights).
		A life cycle approach means we recognize how our choices influence what happens at each of these points so we can balance trade-offs and make informed choices that can help reduce overall burdens on the environment.
		LCI studies are particularly important in the public arena, where they can help policymakers arrive at well-informed decisions and avoid the shortcomings of focusing on a single environmental performance attribute.
	www.polystyrene.org /news/2006_lifecycle.html (516 words)

	BioMed Central \| Full text \| Cell cycle and centromere FISH studies in premature centromere division
		Cell cycle duration assessed by average generation time using differential sister chromatid stain analysis and FISH studies of DNA centromere sequences in PCD individuals, are included and compared with previously reported PCD individuals from 9 families.
		Cellular proliferation kinetics was used to determine the cell cycle duration, which is the interval between one mitosis and the subsequent [13].
		Although PCD is considered a rare phenomenon, two studies found in selected population frequencies of 1 of 100 [1] or 1 of 1000 [11].
	www.biomedcentral.com /1471-2350/6/33 (4133 words)

	Perimenopause: The Complex Endocrinology of the Menopausal Transition -- Prior 19 (4): 397 -- Endocrine Reviews
		Systematic Studies of the Endocrinology of the Perimenopause
		cycle (63, 65, 87, 88, 89, 90, 91).
		temperature studies (16, 57) and in the perimenopausal endocrinology
	edrv.endojournals.org /cgi/content/full/19/4/397 (10185 words)

	PVC shows environmental benefits in life cycle studies
		Some studies see clear advantages for concrete, some report clear advantages for polymer pipes such as PVC and PE, some conclude that the material plays no role as long as no cast iron is chosen.
		The sewage pipe study stresses that it should be kept in mind that PVC pipes have a proven lifetime of more than 50 years, due to their durability (stabilisers).
		The same study further concludes that the sustainability of products (or materials) cannot be seen as an absolute, it is always a ‘relative contribution to the sustainability of the entire system’ in comparison to other, alternative products.
	www.pipa.com.au /docs/PVCLCA.html (801 words)

	Department of Molecular Biology
		Moreover, it is clear from recent studies that Ras is able to induce cyclin D1 elevation during G2 phase by altering the translational efficiency of preformed cyclin D1 mRNA.
		We have detailed the cell cycle expression characteristics of this molecule, and the role of cell cycle in sensitivity of cells to the anti-topo II drug, etoposide.
		In all our studies we have relied upon novel approaches in cell cycle study; these include time lapse studies of normal and fluorescent cells, quantitative image analysis, and single cell microinjection.
	www.lerner.ccf.org /molecbio/stacey (742 words)

	Cell Cycle (Site not responding. Last check: 2007-10-12)
		For researchers who want to do cell cycle research at their benchtop, Guava Cell Cycle software can be used for measuring G0/G1, S, and G2/M phase distributions.
		Cell cycle software includes markers that can be set for quick assessment of G0/G1, S, and G2/M phase cell cycle percentages as data is being collected.
		Whether you are a researcher exploring the mitotic pathway, or evaluating novel compounds for cancer therapies, you will appreciate the ease and convenience of doing cell cycle studies, right in your lab.
	www.guavatechnologies.com /main/products/cellcycle-software.cfm (134 words)

	Energy analysis of power systems
		Studies were also driven by a perception that primary energy sources including uranium would become increasingly difficult and expensive to recover, and would thus require undue amounts of energy to access them.
		Rashad & Hammad conclude that the life cycle CO emission coefficient for nuclear power, on the basis of centrifuge enrichment, is 2.7% of that for coal-fired generation.
		The Vattenfall life cycle study gives a bottom line of 1.35% of lifetime energy output being required for all inputs, and only a tiny fraction of this being in the nature of energy debts.
	www.uic.com.au /nip57.htm (4989 words)

	Diocesan School of Ministry and Theology - Cycle of Studies for Ministry
		The “Cycle of Studies” provides a coherent program for any student who seeks an introduction to the tapestry of Scripture, tradition, and reason that characterizes the Anglican expression of Christianity.
		The sequence of courses within the “Cycle of Studies” then moves backward in time to examine two formative periods in church history.
		We hope that you will be inspired to join us in study, in prayer, and in community, so that you may grow in faithfulness and love.
	www.dsomat.org /cycle.cfm (362 words)

	Cell cycle proteins: studies with CDK2 (Site not responding. Last check: 2007-10-12)
		We are also exploring co-crystallisation studies of pCDK2/cyclin A with intact substrates and the possibility that the CDK2/cyclin A complex has a third site of recognition for substrates.
		Components of the cell cycle machinery are frequently altered in cancer.
		These studies suggested that once both substrates are bound in the correct orientation the ATP is poised to promote phospho-transfer to the substrate serine hydroxyl by a direct in-line attack of the lone pair electrons of the serine on the
	biop.ox.ac.uk /www/lj2001/johnson/johnson_01.html (2671 words)

	Baptist Publishing House (Site not responding. Last check: 2007-10-12)
		The cycle as a whole aims to teach the truth of Scripture for Christian living today while demonstrating the historical sequence and the gradual unfolding of revelation through the Bible.
		Users and potential users of the curriculum should be aware of these key features of the cycle.
		First, it prevents studies from remaining in one testament for so long that the balancing perspective of the other testament is lost.
	www.bph.org /sevenyearcycle.html (436 words)

	Regional Carbon Cycle Studies IV: Progress and Methods Two Posters - Biogeosciences [B]
		In this study, an analysis of the anthropogenic component to atmospheric CO2 measurements is completed using a regional atmospheric chemistry model and its adjoint.
		To accommodate the study of coupled human-environmental relationships and their influences on carbon dynamics, a coherent suite of models is being developed for agricultural, wooded and wetland ecosystems within predominantly grassland and shrubland ecoregions.
		Two critical components of the project are (1) sensitivity and cross-validation studies to evaluate the internal consistencies of the models and (2) intercomparison studies to help isolate methodological artifacts from variability resulting from climate and management of the land.
	www.agu.org /meetings/fm05/fm05-sessions/fm05_B51C.html (9208 words)

	Cardiomyocyte Cell Cycle Regulation -- Pasumarthi and Field 90 (10): 1044 -- Circulation Research
		of the cell cycle is depicted in the Figure).
		Migration of precardiac cells in the chick embryo: a radiographic study.
		Autoradiographic study on the synthesis of DNA, RNA, and proteins in normal cardiac muscle cells and those changed by experimental injury.
	circres.ahajournals.org /cgi/content/full/90/10/1044 (6169 words)

	ISCS Home Page (Site not responding. Last check: 2007-10-12)
		For the understanding of the solar processes during the rising and maximum of the up-coming 23rd solar cycle and their interplanetary consequences SCOSTEP has embarked on a new coordinated program named ISCS.
		Solar Energy Flux Study: From the Interior to the Outer Layer
		dynamic solar emissions in the increasing and maximum portion of solar cycle 23.
	cspar.uah.edu /iscs (266 words)

	PMEL CO2 Home Page
		Washington, conducts ocean carbon cycle research from ships and moorings in all of the major ocean basins in collaboration with AOML's CO2 Program.
		The ocean plays an important role in regulating the amount of CO in the atmosphere and in regulating climate variability and the impact that humans have on the global environment.
		A recently completed field study from Tahiti to Alaska collecting data about the effects of ocean acidification on the water chemistry and marine organisms found evidence that verifies earlier computer model projections.
	www.pmel.noaa.gov /co2/co2-home.html (678 words)

	Forest Dynamics and Carbon Cycle Studies from Multi-sensor Data Fusion
		These changes affect the forest spatial structure, ecosystem function, and the region and the global carbon balance.
		Mapping and understanding the impact of the disturbances on forests are very important for global climate change studies.
		A group of scientists from UMD, GSFC, and Sukachev Forest Institute of Russia have been working on forest mapping and structural parameters retrieval from multi-sensor (optical, radar, lidar) data and data fusion methods.
	www.geog.umd.edu /research/projects/Sun_CarbonCycle.htm (350 words)

	Regional Carbon Cycle Studies V: Progress and Methods - Biogeosciences [B]
		A study on upscaling eddy correlation measurements of CO2 form field to region has been conducted over the island of Zealand, Denmark within an area of 8000 km2.
		Understanding patterns of carbon stocks and fluxes on the land surface is important for studies of terrestrial ecology, the carbon cycle, and climate change and is an increasingly high priority for environmental policymakers.
		This study examines the relative importance of these mechanisms through 2 objectives; statistical analysis of existing Hubbard Brook data and collection and analysis of additional field data.
	www.agu.org /meetings/fm05/fm05-sessions/fm05_B53A.html (3381 words)

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