This clinical trial compared the effects of hydrogen peroxide concentration and toothbrushing on clinical response to vital bleaching. Tooth bleaching was accomplished with a flexible, polyethylene strip coated with a hydrogen peroxide bleaching gel worn for 30 minutes twice daily over a 14-day period. A total of 36 subjects were randomized to 1 of 3 treatment groups: 5.3% hydrogen peroxide str...

We have developed a new litmus paper test (DipTest) for detecting Escherichia coli (E. coli) in water samples by performing enzymatic reactions directly on the porous paper substrate. The paper strip consists of a long narrow piece of cellulose blotting paper coated with chemoattractant (at bottom edge), wax hydrophobic barrier (at the top edge), and custom formulated chemical reagents (at reac...

a new competitive immunochromatography (icg) strip test based on polyclonal antibody (pab) conjugated with gold nanoparticles (nps) was developed and its applications for primary screening of immunoglobulin (ig) a in serum were evaluated. nanocolloidal gold as the detection reagent, with an average particle diameter of 20 nm, was synthesized and labelled pab. the antibody-nanocolloidal gold pro...

Looper and tension control is important in hot strip mills because it affects the strip quality as well as strip threading. Moreover, the most difficult challange in the controller design and control performance comes from the interaction between looper angle and strip tension. Disturbances from several sources also cause a deterioration in control performance, and thus they should be rejected ...

We investigate the Within-Strip Discrete Unit Disk Cover problem (WSDUDC), where one wishes to find a minimal set of unit disks from an input set D so that a set of points P is covered. Furthermore, all points and disk centres are located in a strip of height h, defined by a pair of parallel lines. We give a general approximation algorithm which finds a 3d1/ √ 1− h2e-factor approximation to the...

BACKGROUND Polypharmacy poses threats to patients' health. The Systematic Tool to Reduce Inappropriate Prescribing (STRIP) is a drug optimization process for conducting medication reviews in primary care. To effectively and efficiently incorporate this method into daily practice, the STRIP Assistant--a decision support system that aims to assist physicians with the pharmacotherapeutic analysis ...

use the ‘‘handle,’’ likened to an open scroll, to steady the patch strip as it is loaded with aqueous antigens and applied to the patient’s back. The cotton tipped applicator can then be gently reverse rolled out of position once the patch test strip is applied. This method allows for decreased handling of the adhesive surface, increased stability of the patch and ultimately much less risk of a...