Polypropylene research paper

History[ edit ] Phillips Petroleum chemists J. Paul Hogan and Robert Banks first polymerized propylene in The sales of this material are forecast to grow at a rate of 5. The methyl group improves mechanical properties and thermal resistance, although the chemical resistance decreases.

Polypropylene research paper

Polypropylene research paper

Around half have stress incontinence. Many treatment modalities have been elucidated to treat stress incontinence, and among the most popular are rectus Many treatment modalities have been elucidated to treat stress incontinence, and among the most popular are rectus fascia sling and tension-free vaginal tape TVT.

The introduction of TVT to the urological armamentarium put a multiplicity of synthetic materials into use in the correction of stress urinary incontinence.

A comparison of the impact of these 2 commonly used techniques is needed. A total of 53 female patients older than 21 years mean age Randomization was performed after patients received spinal anesthesia.

One surgeon performed the 2 types of treatment. Associated grade 2 cystocele was simultaneously corrected. Patients with bladder or urethral pathology, as well as those with cystocele greater than grade 2, were excluded from analysis.

All 53 patients completed 6 months of followup and all had stress urinary incontinence.


There were 15 patients who underwent sling surgery and 17 who underwent TVT who had concomitant grade 1 or 2 cystocele. No statistically significant difference was found between the 2 groups at baseline. There were 7 patients who needed at least 1 extra week of catheterization in the sling group and 3 in the TVT group.

No significant difference was detected in terms of post-void residual urine, symptom score, and filling and voiding parameters. At 6 months 1 patient had de novo detrusor overactivity and 7 had wound pain.

Compared to those with TVT, 2 cases of sling were considered treatment failures, none had de novo overactivity and 2 had wound pain.

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None of the patients had symptoms suggestive of urethral erosion. Rectus fascia sling and TVT seem to be equally effective regarding primary outcome measure ie cure of stress incontinence. Symptom score related to incontinence surgery as well as simultaneous correction of cystocele are comparable in the 2 groups.

Fascial sling is a longer treatment process yet it is more economical. Longer followup is vital before rigorous conclusions can be drawn.Researchers raise alarm after chemical leak found in common plastic Medical researchers at the University of Alberta say that two chemicals leaking from plastic laboratory equipment were so biologically active they ruined a drug experiment.

Polypropylene research paper

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A drinking straw or drinking tube is a small pipe that allows its user to more conveniently consume a beverage.

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A thin tube of paper, plastic (such as polypropylene and polystyrene), or other material is used by placing one end in the mouth and the other in the beverage.A combination of muscular action of the tongue and cheeks reduces air pressure in the mouth and above the liquid in the straw.

Polypropylene Chemical Compatibility Chart: Check the chemical compatibility of Polypropylene with various chemicals, solvents, alcohols and other products..

Shop Polypropylene. Please Note: The information in this chart has been supplied by reputable sources and is to be used ONLY as a guide in selecting equipment for appropriate chemical compatibility.

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