Objectives of the study: Assess pregnant women's knowledge about tetanus toxoid vaccination, to find out the
relationship between pregnant women's knowledge and some variables which included: (age, level of
education, occupational status, socio-economic level, gravidity, parity, following visits of antenatal care,
tetanus toxoid vaccination coverage).
Methods and Materials: Descriptive analytic study conducted on multistage probabilistic sample of 130
pregnant women during period from 30th January 2012 to the 24th April 2013 was carried out in the six primary
health care centers at Karbala city. The questionnaire was consisted of four parts which include of: sociodemographic
characteristics, reproductive information, knowledge about tetanus toxoid vaccination, sources of
information regarding tetanus toxoid vaccine. Content validity and reliability of the questionnaire were
determined through pilot study, descriptive and inferential statistics were used to analyze the data.
Results: The results of the study showed that highest percentage (29.2%) of study sample were at age group
(20-24) years, (31.5%) of them were not read and write, and (97.7%) of them were housewives. The highest
percentage (68.5%) of them were living in low socio-economic level, the highest percentage (50.8%) of study
sample were had (2–4) pregnancies, and (40.8%) of them were had (2-4) deliveries, (72.3%) of them have
irregular visits to antenatal care, (76.2%) of them have partial vaccination coverage. Their knowledge were
adequate in some items ,and inadequate in other items, (72.3%) of them were not provided with information
about tetanus toxoid vaccine about it, (61.11%) of women that provided with information answered ; doctors
were source of their information. There were statistical significant association between level of knowledge and
(Level of education and Tetanus toxoid vaccination coverage) with probability value ≤ 0.05.
Recommendations: The study recommended to enhance women's knowledge on tetanus by using the various
mass media to increase the coverage of tetanus toxoid. Encouraging the pregnant women to have regular
antenatal care visits which consider the cause to contact with sources of tetanus toxoid and hence increase the
chance of vaccination.
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This paper aims to study the effect of circular Y-shaped fin arrangement to improve the low thermal response rates of a double-tube heat exchanger containing Paraffin phase change material (PCM). ANSYS software is employed to perform the computational fluid dynamic (CFD) simulations of the heat exchanger, including fluid flow, heat transfer, and the phase change process. The optimum state of the fin configuration is derived through sensitivity analysis by evaluating the geometrical parameters of the Y-shaped fin. For the same height of the fins (10 mm), the solidification time is reduced by almost 22%, and the discharging rate is enhanced by almost 26% using Y-shaped fins compared with the straight fins. The results demonstrate that the sol
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