An-Najah Staff

In  recent  years,  the  employment  of  computer  techniques  in  engineering  design  work  has  become  an  irreversible  trend.  This  is  achieved  through  using  computer  as  the  tool  for  modeling,  analysis,  and  design.  The  objective  of  this  paper  is  to  determine  the  stress  in  unreinforced concrete portal frame and predict  the cracks which will occur  in  the beam and  columns  in  this  frame  due  to  this  stress.  To  do  this,  a  technique  utilizing  finite  element  analysis  is used  in order  to create computerized model using  shell elements with SAP2000  program. This model  is  built  to  simulate  the  real  state  of  beam  and  columns  in  the  frame  under different loading conditions.

In recent years, the employment of computer techniques in engineering design work has become an irreversible trend. This is achieved through using computer as the tool for modeling, analysis, and design. The objective of this paper is to determine the stress in unreinforced concrete portal frame and predict the cracks which will occur in the beam and columns in this frame due to this stress. To do this, a technique is utilizing finite element analysis is used in order to create computerized model using shell elements with SAP2000 program. This model is built to simulate the real state of beam and columns in the frame under different loading conditions.

Introduction & Objectives: Modest long term success is one of the most disappointing issues facing patients undergoing anti-incontinence surgery.Herein we prospectively evaluated the long term results of a novel surgical modification in the treatment of female stress urinary incontinence(SUI).
Material & Methods: Twenty three female patients with mean age of 48.2 years(range:22-73),underwent anti-incontinence surgery to correct their SUI between Augusts 2006 and January 2008. All cases were primary except two patients had previous anti-incontinence surgery. Patients who had mixed incontinence (8 patients), where subjected to urodynamic evaluation and any patient who was documented to have urodynamically overactive bladder was excluded. In-situ anterior vaginal wall sling, reinforced with equi-size monofilament polypropylene tape, was used as an anti-incontinence surgical procedure. The mean follow up period was 30.2 months (range:24-38).
Results: The surgical technique was successful in twenty two 95.65% patients as twenty of them were cured and two patients showed clinical improvements. Only one patient 4.35% did not benefit from the surgery (64-year-old, diabetic, BMI= 44.98).Urinary retention was observed in one patients 4.34% which was resolved after decreasing the tension of suspension sutures. Vaginal mesh erosion was found in two patients 8.69% during the gynecological examination in the first month postoperatively, one of them had early sexual intercourse. Both of these patients suffered only from minimal discomfort during sexual intercourse and the patients refused surgical intervention and conservative approach (watchful waiting) was applied. No postoperatively significant post-voiding residue was detected. Postoperative urgency without urge incontinence was observed in two patients in the early post operative period which was resolved after temporary anti-cholinergic therapy for three weeks. Non of the patients showed suprabupic discomfort or pain due to fixation of suspension sutures with symphysis pubis, neither during the physical examination nor during daily physical activities.
Conclusions: Cost-effectiveness and low risk of urethral erosion, due to the presence of intervening vaginal mucosa, are important considerations of this technique. Long term success is expected, because relaxation of non-tension free suspension sutures and dislocation of midurethral sling are less likely.