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a measure of duration. See under adjectives for specific times, such as bleeding time.
activated partial thromboplastin time (APTT, aPTT) the period required for clot formation in recalcified blood plasma after contact activation and the addition of platelet substitutes such as brain cephalins or similar phospholipids; used to assess the coagulation pathways. A prolonged aPTT can indicate a deficiency of any of various coagulation factors, including factors XII, XI, IX, VIII, X, V, and II, and fibrinogen.
AEC minimal response time the shortest duration at which x-ray exposure can be terminated by automatic exposure control.
atrioventricular sequential time a fixed nonprogrammable interval that extends from the atrial stimulus to the ventricular stimulus.
bleeding time the time required for a standardized wound to stop bleeding; used as a test for platelet disorders; see also bleeding time.
circulation time the time required for blood to flow between two given points; see also circulation time.
clotting time (coagulation time) the time required for blood to clot in a glass tube; see also clotting.
cold ischemia time the time between the placement of a traumatically amputated body part in ice and the time of surgical replantation.
inertia time the time required to overcome the inertia of a muscle after reception of a stimulus.
ischemia time the total time between traumatic amputation of a limb or portion of a limb and its surgical reimplantation; it is the sum of warm and cold ischemia times.
minimal response time in radiology, the shortest possible exposure time for an x-ray film to be exposed automatically.
one-stage prothrombin time prothrombin time.
prothrombin time see prothrombin time.
real time a term used to describe a recording device that shows events simultaneously to their occurrence.
thrombin time the time required for plasma fibrinogen to form thrombin; see also thrombin time.
warm ischemia time the time interval between traumatic amputation of a limb or part and its placement on ice.



time (t),

1. That relationship of events expressed by the terms past, present, and future, and measured in units such as seconds, minutes, hours, days, months, or years.
2. A certain period during which something definite or determined is done.
Synonym(s): tempus (2)
[A.S. tima]


Vox populi The so-called fourth dimension, which corresponds to the duration of a particular event. See Activated partial thromboplastin time, Collision time, Contact time, Delay time, Doubling time, Dwell time, Emergence time, Euglobulin clot lysis time, Expiratory time, Forced expiratory time, Gastric emptying time, Interpulse time, Ivy bleeding time, Just in time, Lead time, Lethal time, Mean time between failure, Movement time, Overtime, Partial thromboplastin time, Pit recovery time, Plasma recalcification time, Quality time, Relaxation time, Prothrombin time, Real time, Relaxation time, Reptilase time, Retention time, Stypven time, Therapeutic turnaround time, Total lead time, Total sleep time, Transportation time, Tumor doubling time, Turnaround time, Turnover time, Wake time, Zero time.


(t) (tīm)
1. That relation of events expressed by the terms past, present, and future, and measured by units such as minutes, hours, days, months, or years.
2. A certain period during which something definite or determined is done.
Synonym(s): tempus (2) .
[M.E., fr. O.E. tīma]


That relationship of events expressed by past, present, and future, and measured in units such as seconds, minutes, hours, days, months, years, or decades.
[M.E., fr. O.E. tīma]

Patient discussion about time

Q. what are the chances for a one time epileptic seizure? I had an epileptic seizure a few years ago and after all the tests it appeared to be a one time seizure. I know having one indicates my tendency for this kind of seizures so should I be afraid now to do things that might bring it up again- like alcohol, drugs, being exposed to flashing lights or having lack of sleep? what are the chances of it to come back after 5 years? any help will be very appreciated....thanks!

A. After 5 years with no recurrence of seizures after a one time episode, tha chances of having another one are low, almost exact to the general population. I would not advise you to start heavily drinking alcohol and doing drugs, because these things can certainly have an effect, however you need not be afraid.

Q. i get headaces all the time what do i need to do?

A. Is this new? Are these headaches worsened after lying down? What side of the body are they?

Constant headache in young female may be migraine or pseudotumor cerebri, both have treatments that necessitate prescription by a doctor.

You can read more about them here:

Q. my legs hurt all the time, what is wrong with them? they ach in the joints and sometimes I get burning needle point pain and the muscles feel like sandpaper

A. There can be a lot of reasons for leg or joint pain, and usually there are not specific problems you can deal with medically. Are you exercising too much? Sometimes stress fractures from running can cause the kind of pain you are describing. Either way you should see someone about this if it is bothering you, either an orthopedic surgeon or a neurologist.

More discussions about time
References in periodicals archive ?
It can be seen in Figure 3 that as the polymer concentration increases at the same crosslinker concentration, the gelation time decreases.
Figure 1 shows the gelation time of our mixed compositions based on Si[(OGly).sub.4]x2GlyOH and 2.0 (4.0) wt.% CS-GA as a function of the template/precursor weight ratio at several pH values and temperatures.
At low levels of pigment addition, <15%, there is little effect; however, at higher loadings, the inhibition effects of 4B become evident both in the initial stages of cure and in the gelation time. The pigment 6B shows a slight decrease in its initial cure time at very high loadings but there is a small increase in the gelation time.
From Figure 4, it can be found that, when the mass fraction of blends was 0.6%, the gelation time was 20 min.
It is also noted that the B series pigments in general all have longer gelation times than the A series pigments.
In this study, the rheometry results showed that trend of the change in gelation times lower temperature sensitivity above the gelation temperature.
In the quantitative way, the Odex/GC hydrogel with gelation time of 12 h was selected as well as the self-healing hydrogel with healing time of 30 min and 2 h after injection, and dynamic frequency sweep test with frequency ranging from 0.1 to 10 Hz, were tested at 37[degrees]C under a fixed strain at 0.1%.
Concentration (%, w/v) Inclusion Formulation complex Chitosan P407 F68 F1 2 0.3 20 2 F2 2 0.3 20 3 F3 2 0.3 21 2 F4 2 0.3 21 3 Gelation temperature Gelation time Formulation [+ or -] SD ([degrees]C) [+ or -] SD (min) F1 32.3 [+ or -] 0.87 0.3 [+ or -] 0.1 F2 34.3 [+ or -] 0.34 -- F3 28.1 [+ or -] 0.52 1.1 [+ or -] 0.2 F4 30.5 [+ or -] 0.83 0.7 [+ or -] 0.3 Table 2: Effect of thermoreversible gel on reserpine-induced ptosis, akinesia, and hypothermia.
As illustrated in Figure 3, gelation time of SF/PNIPAAm hybrids decreased with increase in temperature and concentration of each polymer.
From a practical standpoint, UV crosslinking is faster; a typical gelation time for TEMED-based gels would be ~30-45 min, while the gelation time for UV-polymerized gels is ~1-5 min [1].
However, most pH indicators shows a color change at an early stage before actual gelation time This is because most pH indicators show a color change slightly above pH 8 which is the pH immediately after mixing.