Enhancing Thermal and Water Absorption Properties of Unsaturated Polyester and Epoxy by Nanocarbon Black Powder

This paper covers the effect of nanocarbon black powder (N220) on the some physical properties (thermal conductivity and water absorption) of unsaturated and epoxy resins filled with nanocarbon black powder (N220). The polymer nanocomposites, were prepared with (1 to 10 wt%) of carbon black nanoparticles using ultrasonic wave bath machine dispersion method. The results had shown thermal conductivity of unsaturated and epoxy resins improved by (131.37% and 78%) respectively, at 10wt. %. The water absorption reduction by (55.41% at 4 wt.%, 51.76% at 6 wt.%) for unsaturated polyester and epoxy nanocomposite, respectively

THE INCIDENCE OF ULTRASOUND DIAGNOSED UTERINE ABNORMALITIES RELATED TO MISCARRIAGE RATES – A LOCAL AUDIT

Introduction. Uterine abnormalities are traditionally presented as the cause of pregnancy loss at specific time of pregnancy, mostly at the first or second trimester. The aim of the current study is to use ultrasound to identify the relationship between the incidence of uterine abnormalities and miscarriage at different stages of pregnancy. Patient and method. 174 cases of women with miscarriage have been examined by transabdominal and transvaginal ultrasound. The patient age was from (18 to 45) years and the data collected over eight month from five different hospitals. Results. The age group of (26-35 years) has the largest percentage of miscarriage among other tested age groups with 40.8% in (71cases). Also it was found that single miscarriage was presented in most of the cases. Miscarriage in women with uterine abnormalities was found in 46.6% of the cases. The major uterine anomalies were bicornuate, septate, arcuate and unicornuate uterus which present in (24.69%, 19.75%, 9.88% and, 7.41%) respectively. Other ultrasound findings were fibroid, cervical incompetence and endometriosis which occur in (14.81%, 13, 58 % and, 9.88%) correspondingly. Conclusions. Pregnancy loss is likely to occur in women with bicornuate and septate uterus more than any other uterine anomalies, while the incidences are fewer in women with unicornuate uterus. Furthermore, uterine fibroid is present to be one of the major uterine diseases which can have negative impact on pregnant women, also cervical incompetence and endometriosis are considered as important factors, which can cause pregnancy loss that required further evidence