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Topic: Rigor

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  Rigor mortis - Wikipedia, the free encyclopedia
Rigor mortis is a recognizable sign of death that is caused by a chemical change in the muscles, causing the limbs of the corpse to become stiff ("rigor") and impossible to move or manipulate.
The biochemical cause of rigor mortis is hydrolysis of ATP in the muscle tissue, the chemical energy source required for movement.
The onset of rigor mortis and its resolution determines the tenderness of meat.
en.wikipedia.org /wiki/Rigor_mortis   (437 words)

 Rigour - Wikipedia, the free encyclopedia
These are separate from judicial and political applications with their suggestion of laws enforced to the letter, or political absolutism.
An opportunistic tendency to use any argument at hand is not very rigorous, if very common in politics, for example.
Most mathematical arguments are presented as prototypes of formally rigorous proofs, on the grounds that too much formality may in fact obscure what is being said.
en.wikipedia.org /wiki/Rigor   (603 words)

It is the thesis of this paper that while the rhetoric of rigor functions to attack the academic enterprise in an attempt to reclaim it, the rhetoric also functions as a legitimation rhetoric within the university to justify administrative intrusions into the pedagogical enterprise in the form of increased organization, control, and surveillance.
The call for rigor and accountability originates in the political realm of Reagan conservatism to be used as a discourse to rescue the educational enterprise from the liberal drift rooted in 60?s radicalism, a drift which was linked to the slippage of American economic dominance.
The rhetoric of rigor like all legitimization discourses is a defensive discourse which speaks to the failure of socializing institutions to transform the next generation into the vision of the previous one.
it.stlawu.edu /~spapson/rigor.html   (3971 words)

 Decomposition: What is rigor mortis?
Rigor mortis is the state a body reaches when the oxygen supply to the muscles ceases but the cells continue to respire anaerobically (without oxygen).
Rigor mortis ceases as the body cells die, enzymes are released and the cells decompose.
During rigor mortis, the tissues are acidic because of the lactic acid and this makes them unpalatable to fly larvae.
www.deathonline.net /decomposition/body_changes/rigor_mortis.htm   (200 words)

 Program Details for A Dialogue on Rigor   (Site not responding. Last check: 2007-11-06)
Let’s face it; rigor is a concept that applies to all educators in much the same way as integrity applies to political leaders: we say we value it, we aspire to achieve it and (whether or not we really ever do achieve it) the public demands that we strive for it.
Rather, rigor is a highly personalized element of the teaching/learning partnership in which the teacher lights a fire of academic ambition and personal responsibility in the learner and shares with the learner a mutual accountability for stoking that fire with high expectations, achievement and continuous growth.
Rigor is not raised by boosting the average IQ of a classroom of students; it is raised by boosting mutual (teacher and learner) accountability for elevating the expectation, performance and capacity of each student.
www.sdpb.org /Archives/ProgramDetail_learning.asp?ProgID=2970   (848 words)

 RIGOR - Definition
{Rigor caloris}[L., rigor of heat] (Physiol.), a form of rigor mortis induced by heat, as when the muscle of a mammal is heated to about 50[deg]C.
{Rigor mortis}[L., rigor of death], death stiffening; the rigidity of the muscles that occurs at death and lasts till decomposition sets in.
Severity of climate or season; inclemency; as, the rigor of the storm; the rigors of winter.
www.hyperdictionary.com /dictionary/rigor   (273 words)

 How does Rigor Mortis work?   (Site not responding. Last check: 2007-11-06)
Rigor mortis is the rigidity of the body that occurs after death.
Rigor mortis is Latin for "stiffness of death".
Rigor mortis wears off as the tissues begin to decompose - proteolytic enzymes in the lysosomes of the muscle cells escape and begin to dissolve the myofilaments.
users.stlcc.edu /cmittler/emt/RigorMortis.html   (363 words)

 Paper 1: Why does rigor mortis progress downwards? : Anil Aggrawal's Internet Journal of Forensic Medicine   (Site not responding. Last check: 2007-11-06)
Differences in the rigor mortis between these muscles are reflected by differences in rigor mortis between the predominant muscle fibers, but the cause of rapid progress of rigor mortis in red muscle fiber is unknown.
Rigor mortis could be resolved by proteases which would be activated by high levels of intracellular Ca However, it is not known whether postmortem levels of Ca are different between red and white muscle.
Rigor mortis progressed more rapidly in red than in white muscles, and this study was the first to demonstrate such a difference between muscle types.
anil298.tripod.com /vol_003_no_002/papers/paper001.html   (2929 words)

 dying and death
Rigor mortis tends to affect the smallest muscles first, and then spread throughout the larger muscles.
Typically, rigor is first apparent in the small muscles of the eyelids, then the lower jaw and neck, followed by the limbs.
Thus, when rigor affects the orbicularis muscles shortly afterwards, the force of contraction they produce is not enough to overcome the stiffness of the levator muscles and the eyes remain open.
www.nurseminerva.co.uk /dying.htm   (1983 words)

 MSN Encarta - Search Results - Rigor Mortis
Rigor Mortis, stiffening of body muscles after death.
Rigor mortis occurs because of chemical changes that take place in the muscle tissue beginning...
After somatic death, several changes occur that are used to determine the time and circumstances of death.
ca.encarta.msn.com /Rigor_Mortis.html   (113 words)

 Rigor Mortis   (Site not responding. Last check: 2007-11-06)
Rigor mortis starts in the smallest muscles, and continues to spread until all muscles are stiff.
While this is true in a general sense, the real rule of thumb is rigor begins with small muscles and continues to large ones; which means the muscles in the face (which tend to be small) will be affected sooner than those in the leg (which tend to be longer).
To establish the degree of rigor mortis, a medical examiner will often feel the jaw, as this is the first place rigor mortis is noticable, and the first place from which it will disappear.
www.uncg.edu /dcl/courses/fastforward/eng105/content/unit2/fact2.htm   (189 words)

 Rat Rigor Mortis   (Site not responding. Last check: 2007-11-06)
Rigor mortis is the stiffening of muscles after death.
At 37º C (98º F) rigor was fully developed by 3 hours after death, and resolved at 6 hours after death.
At 6º C (42º F) rigor was fully developed by 48-60 hours after death, and resolved at 168 hours after death.
www.ratbehavior.org /RigorMortis.htm   (346 words)

 Slaughter Methods, Ante-Mortem Stress and Rigor Assessment in Turbot (Scopthalmus maximus)   (Site not responding. Last check: 2007-11-06)
Rigor mortis is the first post-mortem process that has a major influence on appearance and structure of fish muscle.
Rigor mortis can be influenced by a number of ante-mortem and post-mortem factors, in particular, the handling and processing of fish during commercial operations.
A rigor index was developed to assess the state of rigor during the experiment by observing the angle of sag of a clamped fish in a vertical position index.
www.ucc.ie /research/adc/posters/poster11.html   (259 words)

Rigor, I.G. and J.M. Wallace, Variations in the Age of Sea Ice and Summer Sea Ice Extent, Geophys.
Rigor, I.G. Wallace, and R.L. Colony, Response of Sea Ice to the Arctic Oscillation, J. Climate, v.
Rigor, I.G. (invited), and J. Wallace, Predicting the Extent of Sea Ice in the Arctic, Eos Trans.
psc.apl.washington.edu /pscweb2002/Staff/rigor/rigor.html   (1982 words)

 Quality and quality changes in fresh fish - 5. Postmortem changes in fish   (Site not responding. Last check: 2007-11-06)
Rigor mortis starts immediately or shortly after death if the fish is starved and the glycogen reserves are depleted, or if the fish is stressed.
A fish in rigor mortis cannot normally be filleted or processed because the carcass is too stiff to be manipulated and is often contorted, making machine-handling impossible (see also section 3.2 on bleeding and section 5.1 on sensory changes).
The resolution of rigor is a process still not completely understood but always results in the subsequent softening (relaxation) of the muscle tissue and is thought to be related to the activation of one or more of the naturally-occurring muscle enzymes, digesting away certain components of the rigor mortis complex.
www.fao.org /docrep/v7180e/V7180E06.htm   (9365 words)

 On Intellectual Rigor
Intellectual rigor is the art of convincingly defining the axioms and proving the most relevant properties of some properly bounded logically possible domain.
This line of thought would allow one to conclude that intellectual rigor –unlike the usual matters on which it is exercised—is a creative and intuitive modus operandi.
That these collections of general principles are not truly intellectually rigorous can be seen from the usual fact that many of these analogies are never rigorously worked out to completion, because, at a certain point, nobody cares to work out a problem that has ceased to be one.
pages.sbcglobal.net /enrique.moreno/prose/OnIntellectualRigor.htm   (1168 words)

 rigor mortis on Encyclopedia.com   (Site not responding. Last check: 2007-11-06)
The onset may vary from about 10 min to several hours or more after death, depending on the condition of the body at death and on factors in the atmosphere, particularly temperature.
Rigor mortis affects the facial musculature first and then spreads to other parts of the body.
Rigor mortis came slow: but was PRA justice done?
www.encyclopedia.com /html/r1/rigormor.asp   (337 words)

 Rigor-Force Producing Cross-Bridges in Skeletal Muscle Fibers Activated by a Substoichiometric Amount of ATP -- Yamada ...
and the rigor patterns are depicted in Fig.
Any differences in the bar graph are statistically significant in the transition from the rigor state to the photoactivated state.
Structure and periodicities of crossbridges in relaxation, in rigor, and during contractions initiated by photolysis of caged Ca Biophys.
www.biophysj.org /cgi/content/full/85/3/1741   (7222 words)

 Do You Speak American . Track That Word! | PBS
Delirium tremens) Inf TN24, The rigors [FW: This does not seem to be a synonym; Inf used it to describe tremens].
100.899 wAL, A nervous rigor may be confused with a chill but is characterized by the patient alternately tensing and relaxing the muscles over the body, shivering, and the absence of fever; it is a type of anxiety attack.
A rigor ran up her spine, turned and dived into her stomach.
www.pbs.org /speak/words/trackthatword/ttw?i=1268   (281 words)

 Ignatius Rigor's CV
Rigor, Sediment transport by sea ice in the Chukchi and Beaufort Seas: Increasing importance due to changing ice conditions?, Deep Sea Research, submitted, 2004.
Rigor, I., Russian Historical Ice Charts and Data Set, 1967 - 1990, Proceedings of the ONR/NRL Workshop on Modeling the Dispersion of Nuclear Contaminants in the Arctic Seas, Monterey, CA, Oct.
Rigor, and Kay Runciman-Moore, A Collection of Sea Ice Trajectories in the Arctic Ocean, APL-UW TM 4-90, 1990.
www.atmos.washington.edu /~ignatius/CV.html   (1518 words)

 Biophysical Journal: Rigor-force producing cross-bridges in skeletal muscle fibers activated by a substoichiometric ...
The latter cross-bridges contribute to produce the rigor force by interacting with the actin filaments, first producing the active force and then being locked in a noncycling state(s), transforming their configuration on the actin filaments to stably sustain the produced force as a passive rigor force.
Although the rigor force is considered to be a passively produced force, it is generated after the active force production when cross-bridges hydrolyzing the last stock of ATP finally attach to the thin actin filaments, forming rigor complexes.
Therefore it could be argued whether the cross-bridges producing the rigor force are in the rigor configuration(s) or in the active force-generating configuration(s).
www.findarticles.com /p/articles/mi_qa3938/is_200309/ai_n9288513   (1080 words)

 Peter Suber, "The Rule of Rigor"
The rule of rigor means that from "p · q" we can infer only the left-hand conjunct "p" by the rule of simplification.
Mathematicians differed on methods by which they attacked this problem, but they agreed that the concept of proof in mathematics had to be made much more rigorous and precise, and that proofs had to be conducted according to a much higher standard of rigor.
The rule of rigor corresponds to the fact that, at the lowest level, computing machines perform only unintelligent syntactical operations and never "decide for themselves" that steps are so obvious that they can be skipped.
www.earlham.edu /~peters/courses/log/rigor.htm   (1207 words)

 Photolytic Release of MgADP Reduces Rigor Force in Smooth Muscle -- Khromov et al. 80 (4): 1905 -- Biophysical Journal
from the stiffness in rigor by engaging the offset mode of the
After the force had reached a plateau, the strip was placed into 0 Ca high-tension rigor state by washing it in ATP- and Ca-free solution for 30-40 min with constant stirring and then transferring it into the photolysis trough containing 1 mM caged ADP for a 5-min incubation period.
Rigor stiffness, considered to be proportional to the number of attached cross-bridges, is not expected to be affected by
www.biophysj.org /cgi/content/full/80/4/1905   (6114 words)

 Rigor Mortis - Prepare To Meet Your Slow Death!
Rigor Mortis - Prepare To Meet Your Slow Death!
The original RIGOR MORTIS line up of Bruce Corbitt, Mike Scaccia (MINISTRY, REVOLTING COCKS), Casey Orr (GWAR, X-COPS, THE HELLIONS, THE BURDEN BROTHERS), and Harden Harrison (PERVIS, SPEEDEALER, MITRA) have announced their first shows together in 15 years.
The Re-Animate tour starts with a handful of Texas dates in October, with tentative plans to continue after the first of the year followed by a new album.
www.geocities.com /futurevillain/rigor.html   (83 words)

 Winds, Ice Motion Root Cause Of Decline In Sea Ice, Not Warmer Temperatures
The Arctic Oscillation is a seesaw pattern in which atmospheric pressure at the polar and middle latitudes fluctuates between positive and negative phases.
Rigor and John M. Wallace, UW professor of atmospheric sciences, say the extreme high caused winds at the surface to circulate in ways that blew most of the thicker, older ice out of the Arctic Ocean into the Atlantic.
The fluctuations in the Arctic Oscillation to its positive phase set the stage for the recent reductions in ice extent, and Rigor and Wallace think low summer sea-ice extents are likely to persist for at least a few years.
www.sciencedaily.com /releases/2004/12/041220010410.htm   (919 words)

 Deans scrutinize academic rigor   (Site not responding. Last check: 2007-11-06)
The academic rigor committee will look at how much time is spent on courses and whether faculty expectations are too high or too low.
The Academic Rigor Committee was constructed by those that were most critical of the Strategic Plan, Esteban said.
The results of the committee will celebrate the areas that value academic rigor and high performance and take steps to improve the areas that are not as good, Esteban said.
orion.csuchico.edu /Pages/vol39issue03/n.deans.html   (720 words)

 Contraction and rigor mortis
Explaining the development of rigor is a serious undertaking, because first you must understand the biochemistry of muscle contraction.
In early research, it was though that increased tenderness might originate from the breakdown of rigor bonds between thick and thin filaments, but now this appears unlikely, because increased tenderness during conditioning still occurs when sarcomeres are at a stretched length that virtually eliminates any overlap of thick and thin filaments.
If the muscle happens to be at a contracted length when rigor develops, we have a major problem, because the massive overlap of thick and thin filaments causes severe meat toughness.
www.aps.uoguelph.ca /~swatland/ch5_1.htm   (2165 words)

 Dimensions: Suggested academic rigor standards on way to Faculty Senate   (Site not responding. Last check: 2007-11-06)
The idea behind the academic rigor statement for Chico State University is that students should take their college classes as seriously as they would a job or career.
The Academic Rigor Committee, headed by Donald Heinz, dean of humanities and fine arts, and Roger Lederer, dean of natural sciences, formed in the fall of 1997.
Sophomore Melissa Koinzan attends one of Zimbelmen's classes, where parts of the academic rigor statement are printed in the syllabus, showing that some professors are already implementing the plan in the classroom.
orion.csuchico.edu /Pages/vol41issue4/dimensions/4.rigor.html   (589 words)

 International Center for Leadership in Education
A comprehensive systems approach to the transformation of schools and districts based on a focus on instruction, data, leadership at all levels, and changing the structure and culture of schools.
Using the Rigor/Relevance Framework for Planning and Instruction Planning tools and professional development activities to raise the level of rigor and relevance in all subjects and all grades.
Changing how and what schools teach is possible as long as educators focus on the skills and knowledge students need for adult life, organize education based on the way students learn, and obtain broad-based community support for change.
www.daggett.com   (536 words)

 Structural responses to the photolytic release of ATP in frog muscle fibres, observed by time-resolved X-ray ...
In the absence of Ca, photolytic release of ATP in muscle fibres initially in the rigor state caused the force and stiffness to decrease monotonically towards their values in relaxed muscle fibres.
In the presence of Ca, photolytic release of ATP resulted in an initial rapid decrease in force, followed by a slower increase to the isometric plateau.
However the gradual return towards the rigor state began earlier when only 0·33 mM ATP was released.
jp.physoc.org /cgi/content/abstract/520/3/681   (475 words)

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