crack


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crack

(krăk),
1. A fissure.
2.

crack

(krak) an incomplete split, break, or fissure.

crack

Etymology: ME, craken
a street drug made by chemically converting cocaine hydrochloride to a form that can be smoked. Smoking crack is a faster, more direct way of getting cocaine molecules into the brain. Because larger amounts of the drug reach the brain more quickly, the effects are more intense than when cocaine, in the white-powder form, is injected, ingested, or inhaled. Also called crack cocaine, freebase.

crack

Substance abuse A 'free-base' form of cocaine which, when smoked in a pipe, produce a brief, very intense 'high'. See Bingeing, Cocaine, Crack 'smile. ', Free base cocaine.

crack

(krak)
1. A fissure.

crack

A highly purified form of COCAINE which produces an intense reaction of rapid onset. Crack is inherently more dangerous than less concentrated forms and deaths have resulted from its use.

crack

(krak)
A fissure.

crack

a discontinuity in a hard, brittle surface such as horn, hoof.

toe crack

Patient discussion about crack

Q. what causes the sound of cracking noises in the head all the time it was said i had acute sinusitis but honestly i think it is more . I don't know why i have cracking noises in my head . I am very concerned about this also my neck is always stiff feeling and aching all the time. . My eyes are very tired and i see blue spots and they hurt behind the eye very badly . I have headaches very often

A. wow...that really sounds serious...i have chronic sinusitis and i can tell you i had horrible headaches but nothing like you describe now. i would strongly consider going to a hospital and checking it out...
tell us what was the result!

Q. anyone knows how to stop hard skin on the feet from becoming cracked??? during summer my feet got lots of hard skin and in the heel area the skin actually got cracked kinda deep. it hurts now and the cracks are starting to get infected I guess... do u guys know how to solve this?? I know there are some creams for that but I thought maybe now it's too late for that and I need something stronger?

A. There are good creams for moisterizing the skin of your feet on a daily basis, however now that you feel they might be infected you should see a dermatologist for some better treatment.

Q. Im only 17 I have horrble lower back pains. Im constitly rubbing,stretching, or cracking my back. the pain is either a throbbing pain or an ache or sting.I feel it worse when I put my chest out my shoulders back. my back feels like its out of place.

A. Lower back pain is so very common... I have had it for years, and just recently what I found to be very helpful is walking. Even a 30-45 minute walk and then some streching is good. I have hardly had any pain since I started exercising and it feels really good. Swimming is also known to help.

More discussions about crack
References in periodicals archive ?
The parameter which causes the crack generation were studied and characterized.
Finally the fatigue crack analysis and maximum life is estimated, this work was done by both analytical and finite element analysis technique.
The Case 3 is a continuation of the crack propagation that passed the reinforcing steel bar.
To verify the validity and reliability of the established FEM model, the simulation results of the SIF along the crack tips are compared with Raju-Newman's research [11].
In this section, the mode shape functions of cracked thin plate are obtained by using the simply supported boundary conditions and internal boundary conditions along the crack.
This can result in vertical cracks appearing in the internal and external walls if expansion and contraction joints are not correctly installed during the construction of the building.
To determine the propagation energy of the crack running perpendicular to the interface, also called energy release rate, the following equation studied by Madani et al.
The researchers compared the predicted fatigue life based on the long and short crack models using the extreme-value statistics (EVS) estimated maximum pore sizes to the experimental data.
The rose diagrams were drawn on the basis of crack orientation data (Fig.
Airbus has dismissed calls to ground its superjumbo fleet over the cracks, which first came to light during repairs of a Qantas A380 damaged by an engine blowout shortly after taking off from Singapore in November 2010.
You often run into challenging environments such as cracks full of water, cold temperatures or exceedingly wide cracks that require a customized solution," said Duntemann.
Numerous FE models have been developed for the simulation of the single specimen test method and for obtaining predicted crack resistance curves.