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Topic: Prompt critical

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Prompt neutron

Supercritical

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	Prompt critical Encyclopedia
		Prompt criticality must be avoided in the operation of a nuclear reactor as it will cause a rapid uncontrollable increase in reactor activity, and reactors are designed to make it as unlikely as possible.
		At Chernobyl, in 1986, the heat of an overheated reactor core led to the meltdown of the core, vaporization of steam and a steam explosion.
		Indeed, one of the problems to be overcome in constructing a plutonium-fueled bomb is to achieve prompt criticality and an explosion before the energy released by the reaction in an assembly that is merely supercritical destroys the bomb.
	www.hallencyclopedia.com /topic/Prompt_critical.html (992 words)

	Critical mass Summary
		Critical mass is the amount of material necessary to sustain a nuclear chain reaction at a constant rate.
		The realisation that a supercritical assembly is not necessarily prompt critical is attributed to Enrico Fermi, and made the construction of a nuclear reactor using a fission chain reaction possible.
		In the case of a sphere surrounded by a neutron reflector the critical mass is about 15 kg for uranium-235 (20 to 25 kg for a gun-type assembly) and 10 kg for plutonium 239.
	www.bookrags.com /Critical_mass (2324 words)

	Prompt critical - Wikipedia, the free encyclopedia
		Prompt criticality must be avoided in the operation of a nuclear reactor as it will cause a rapid uncontrollable increase in reactor activity, and reactors are designed to make it as unlikely as possible.
		At Chernobyl, in 1986, the heat of an overheated reactor core led to the meltdown of the core, vaporization of steam and a steam explosion.
		Indeed, one of the problems to be overcome in constructing a plutonium-fueled bomb is to achieve prompt criticality and an explosion before the energy released by the reaction in an assembly that is merely supercritical destroys the bomb.
	en.wikipedia.org /wiki/Prompt_critical (836 words)

	Criticality Accidents
		The criticality radiation alarm system functioned as designed, the evacuation of personnel from the building was prompt and orderly, and the excursion was terminated expeditiously by a negative coefficient of reactivity and was prevented from recurring by the action of the safety devices.
		A criticality excursion occurred as enriched uranium metal, neutron-reflected and -moderated by hydrogen, was being assembled.
		Prompt critical was obtained by dropping a slug of UH in styrex through a vertical hole in a small assembly of the same material, which was diluted with polyethylene and reflected by graphite and polyethylene.
	www.cddc.vt.edu /host/atomic/accident/critical.html (4824 words)

	NUKEFACTS ... and fictions
		The condition where the reactor is critical on prompt neutrons, and the neutron population increases as rapidly as the prompt neutron generation lifetime allows is known as prompt criticality.
		The so-called condition of "prompt criticality" is pure fiction based on flawed logic that ignores the message contained in the two principal equations describing reactor transient behavior.
		There is only one state of criticality, and that is "delayed criticality." The condition of "prompt criticality" is a fiction that defies the fundamental equations of reactor behavior.
	www.pipeline.com /~rstater/nuke1tttt.html (1760 words)

	Prompt
		The condition where the reactor is critical on prompt neutrons, and the neutron population increases as rapidly as the prompt neutron generation lifetime allows is known as prompt critical.
		Prompt critical is, however, a convenient condition for marking the transition from delayed neutron to prompt neutron time scales.
		A reactor whose reactivity even approaches prompt critical is likely to suffer damage due to the rapid rise in power to a very high level.
	www.tpub.com /doenuclearphys/nuclearphysics82.htm (415 words)

	Welcome to the PROMPT Institute Home page
		PROMPT first structures sessions so that the child is required to focus (give as much attention to the task of interaction) as possible.
		As a parent or care giver it is critical that you are familiar with all/as many of the different types of programs that are available your child and his/her specific type of delay or disorder, the theory or principles on which they are based, and the outcomes they claim to achieve.
		PROMPT advocates strongly for the parent to be in a "parent role" (as opposed to a therapist role) and to support their child in daily life and communication experiences.
	www.promptinstitute.com /treatmentexp.html (1340 words)

	Nuclear reactor - the free encyclopedia (Site not responding. Last check: 2007-10-11)
		A mass of fissionable material is said to be a critical mass if each fission event leads to one or more fission events on average.
		Nuclear reactors are (with the exception of certain speculative subcritical reactors) designed to contain critical masses that are not prompt critical, so that controlsystems can react quickly enough to maintain a steady rate of heat production.
		Fission events that occur immediately arecalled "prompt" fission events, and if there are enough prompt events for the reaction to be self-sustaining without the delayedfission events, then the reactor is said to be prompt critical.
	www.encyclopedia-of-knowledge.com /?t=NR (3833 words)

	Command Prompt Fun - Critical Security.NET
		There are hundreds of things that can be done from a command prompt.
		Mict, I can see you are a pretty new member and you're obviously keen, so I am not going to flame here, but please don't answer questions unless you know what you are talking about - it just leads to confusion.
		I'm in a firewalls and networks team and work and I can tell you that at least 25% of may day is spent inside the command shell.
	www.criticalsecurity.net /index.php?showtopic=19077&view=findpost&p=113589 (1495 words)

	How do I promote student reflection and critical thinking
		However, reflective thinking is most important in prompting learning during complex problem-solving situations because it provides students with an opportunity to step back and think about how they actually solve problems and how a particular set of problem solving strategies is appropriated for achieving their goal.
		Thus, it is increasingly important to prompt reflective thinking during learning to help learners develop strategies to apply new knowledge to the complex situations in their day-to-day activities.
		It is important to prompt reflective thinking in middle school children to support them in their transition between childhood and adulthood.
	www.higp.hawaii.edu /kaams/resource/reflection.htm (1060 words)

	Cultures of Monstrosity Course Syllabus - EngagedIntellectual.org (Site not responding. Last check: 2007-10-11)
		Prompt 2: write a short summary of the critical reading strategies introduced in “Reading” in Writer’s 21-29 and “Reading and Responding” in Thinking 11-16 that promise to be of most value to you.
		Prompt 10: Collaboratively write a 1 paragraph abstract of your argument, highlighting the main claims your group will be making about the historical context for the changes to the Frankenstein story in a film version of the novel.
		Prompt 15, Part B: Write a 1 paragraph abstract of your argument based on a case from one of the class archives of monstrosity, briefly summarizing your cultural text and highlighting the main claims you will be making about the aspects of history that inform it.
	www.uwm.edu /People/ljsmth/monstrosity.html (1334 words)

	City of Lebanon Fire Department: Emergency Response (Site not responding. Last check: 2007-10-11)
		The longer a situation goes undetected, be it a fire, medical, environmental, or rescue emergency, the worse it gets, the more costly it becomes to resolve and the greater the potential for life and property loss.
		Prompt notification and quick response will be effective only if the response is appropriate for the particular threat.
		A specific life or property threat that is detected quickly and receives the prompt attention of personnel trained and equipped to handle that threat will result in the best possible outcome.
	www.lebcity.com /City_Resources/fire/er.htm (734 words)

	PHHS - SAT Essay Prompt
		The prompts are meant to be relevant to a wide range of fields and interests - literature, the arts, sports, politics, technology and science, history, and current events -not narrowly related to specific topics.
		Because the prompt asks them to address a specific issue, students will not be able to prepare an essay in advance that will effectively address the essay assignment.
		Following the prompt is an assignment that focuses the student on the issues addressed in the quotations or paragraph.
	www.pthsd.k12.nj.us /sch/PHHS/satprompt.htm (932 words)

	[No title]
		Critical habitat is not determinable when one or both of the following situations exist: (i) information sufficient to perform required analyses of the impacts of the designation is lacking, or (ii) the biological needs of the species are not sufficiently well known to permit identification of an area as critical habitat (50 CFR 424.12(a)(2)).
		Once designated, critical habitat has only one regulatory impact: under section 7(a)(2), Federal agencies must, in consultation with the Service, insure that any action they authorize, fund, or carry out is not likely to result in the destruction or adverse modification of critical habitat.
		Critical habitat actions are funded separately (funding still is allocated through the listing subactivity), and critical habitat actions will be prioritized on an annual basis.
	www.eswr.com /f06149.txt (2661 words)

	Welcome to the PROMPT Institute Home page
		The development of PROMPT treatment for them was grounded in theoretical and clinical perspectives that cross several disciplines concerned with physical, mental and social development.
		With respect to PROMPT treatment in the 1990's, emphasis began to be placed on the concept of "planes of movement" (vertical, horizontal, anterior-posterior) used in co-articulated speech, and on how these movement planes become coordinated in normal speech.
		The PROMPT Institute is dedicated to the investigation of tactual sensory systems and their critical role in the development/rehabilitation of speech, language, cognition and interaction.
	www.promptinstitute.com /mission.html (1183 words)

	4.1 Elements of Fission Weapon Design
		Since at prompt critical alpha is exactly zero, the ratio of the magnitude of this delayed critical measurement to the fraction of fission neutrons that are delayed allows the alpha value to be calculated.
		Since neutron leakage occurs at the surface of a critical or supercritical core, the strength of the neutron flux is not constant throughout the core.
		Since the critical mass of a system is inversely proportional to the square of the density, we have increased the critical mass remaining material (which we shall call the target) while simultaneously reducing its actual mass.
	nuclearweaponarchive.org /Nwfaq/Nfaq4-1.html (21668 words)

	English 315 (Site not responding. Last check: 2007-10-11)
		A critical theory writing prompt will be assigned upon completion of each novel to provide you the opportunity to experience the novels from different perspectives.
		Critical Theory Prompts: You will be asked regularly to write about a specific prompt relevant to the novel we are reading at the time.
		These prompts will be related to the critical interpretations that you read about in Kershner's text, from "The rise of Modernism" through "Gender Criticism." Prompts will be given at the beginning of class and will be timed writings of 15-20 minutes.
	webpages.marshall.edu /~johnsond/english315f01.html (754 words)

	1999 Institute
		The educators studied and discussed various methods and concepts of critical response in relation to the standards,and applied this to their observations.
		We practiced our own skills of critical analysis and critical response, then designed ideas and methods that examined the relationship of critical analysis techniques and methodologies to encourage critical thinking skills when responding to our visual culture.
		While entire lessons in the arts can be centered on critical response, sections of the critical response standard can also be addressed as part of a lesson that has a different topic.
	www.northallegheny.org /govinsarts/1999Institute.html (585 words)

	password
		This is the password prompt that would appear from User Table option 2.
		You may also find yourself face to face with this prompt for reasons including: trying to update your data file to a new version of QuickBooks®, or trying to open your file right after installing an update to your existing version of QuickBooks®.
		This is the password prompt that would appear from User Table options 3 or 4.
	www.critical-recovery.com /password/password.htm (705 words)

	CBBS: Reporting of Critical Values by transfusion service laboratories
		These critical values may be indicated in the procedure manual and /or in a separate manual or policy.
		The requirement for the establishment of "critical values" is most readily evident where quantitative results are generated, but assays yielding qualitative results can also be considered as potentially yielding "critical" results.
		He concludes saying that trying to put all critical events/situations that could conceivably occur in the transfusion service into one policy is unnecessary, virtually impossible, and does nothing, that he can see, to improve patient care.
	www.cbbsweb.org /enf/2005/criticalvalues.html (1798 words)

	Methods - Design and Applications of the Nuclear Reactor
		prompt critical if the immediate fission events are sufficient to carry on a chain reaction.
		A prompt critical mass will rapidly release an exponentially increasing amount of heat and cannot be controlled.
		When a neutron is captured by a fuel nucleus, the nucleus may undergo fission immediately, it may remain in an unstable state for a short while before undergoing fission, or it may fail to undergo fission at all.
	www.edinformatics.com /inventions_inventors/nuclear_reactor.htm (3755 words)

	Critical Prompt
		Research will be used to help support your point, to show you are aware that others disagree with your position, to provide helpful background information, or to help expand your understanding of your topic.
		Again, a critical research paper is primarily your textual-supported argument; it is not a review of what the critics have said.
		The final draft should be double-spaced with 1 inch margins in 12-point Ariel or Times New Roman font.
	www.dbu.edu /mitchell/critical1.htm (864 words)

	UMR Nuclear Reactor: Basic Physics Behind a Nuclear Reactor (Site not responding. Last check: 2007-10-11)
		Roughly speaking, when the same number of neutrons are created at a given time as are created in a previous generation, a reactor is considered to be 'critical'.
		If a reactor is 'prompt critical,' however, the operator should be very concerned because the reactor is changing in power very quickly and is very likely moving faster than human reaction time.
		To prevent a prompt critical state, many standard procedures and regulations have been created and are rigorously enforced.
	campus.umr.edu /reactor/basicphysics.html (280 words)

	Heart attack symptoms and warning signs on MedicineNet.com
		heart attack is critical for prompt recognition and treatment.
		Even though the symptoms of a heart attack at times can be vague and mild, it is important to remember that heart attacks producing no symptoms or only mild symptoms can be just as serious and life-threatening as heart attacks that cause severe chest pain.
		Prompt administration of drugs can help restore circulation to the heart and increase your chances of survival.
	www.medicinenet.com /script/main/art.asp?articlekey=14577 (600 words)

	[No title]
		It occurred because of a combination of design defects of the Soviet-designed RBMK reactor with performance of a experiment with the reactor that, ironically, was intended to establish safer ways of bringing the reactor to a safe-shutdown condition after an operational upset.
		When barely prompt critical, an RBMK reactor (the Chernobyl reactor type) will increase in power by a fraction of 1% every 0.001 second.
		However, the design and implementation of the experiment did not take into account some of the trickier aspects of the neutronics of the reactor (i.e., the behavior of neutrons in the core) and the coupling of the neutronics with the conditions of the cooling water (i.e., the thermal hydraulics of the reactor).
	home.comcast.net /~brooks50/chernall.html (1544 words)

	Force Application and Launch from CONUS (FALCON)
		The Government's vision of an ultimate prompt global reach capability (circa 2025 and beyond) is engendered in a reusable Hypersonic Cruise Vehicle (HCV).
		A much nearer term prompt, global strike capability is needed however.
		This common set of key technologies includes: efficient aerodynamic shaping for high lift to drag, lightweight and durable high temperature materials, thermal management techniques including active cooling and trajectory shaping (such as periodic flight), target update and weapons separation.
	www.globalsecurity.org /space/systems/falcon.htm (429 words)

	Critical mass - Wikipedia, the free encyclopedia
		An exactly critical, room temperature mass will become sub critical if warmed and supercritical if cooled.
		Top: A sphere of fissile material is too small to allow the chain reaction to become self-sustaining as neutrons generated by fissions can too easily escape.
		Middle: By increasing the mass of the sphere to a critical mass, the reaction can become self-sustaining.
	en.wikipedia.org /wiki/Critical_mass_(nuclear) (1483 words)

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