We have shown that a variety of left(right) normal bands is closed in some homotypical varieties. Further, we partially generalize a result of Isbell from the class of commutative semigroups to some generalized classes of commutative semigroups by showing that dominion of such semigroups belongs to same classes.

Background: Iron deficiency anaemia (IDA) is the prevalent form of anaemia which has become a major public health problem, globally. Women in the reproductive age group (15–49 years of age) are at increased risk, especially in the South Asian population. It is of paramount importance to identify these micronutrient deficiencies in this age group as it adversely affects the birth outcomes, but the mother and the child at risk of morbidity and mortality during pregnancy.  Methods: A cross-sectional study was conducted at Civil Hospital, Karachi for 12 months i.e. October, 2018 to December, 2019. Data was prospectively collected from patients after obtaining written informed consent. 377 patients were included who met the diagnostic criteria. Descriptive statistics were used and qualitative data analysis; mean, standard deviation, frequency, and percentages were respectively calculated. Effect modifiers were controlled through stratification to see the effect of these on the outcome variable. For post-stratification, the chi-square test was applied with a p value of≤0.05.Results: A total of 377 patients with microcytic anaemia were enrolled from Civil Hospital, Karachi. Mean age, duration of anaemia, haemoglobin, height, weight and BMI in our study was 29.28±6.14 years, 1.41±0.26 months, 9.27±0.86 mg/dl, 26.72±1.56 kg/m2, 138±7.28 cm and 78.7±9.87 kg. Out of 377 patients with microcytic anaemia, 144 (38.2%) and 233 (61.8%) had and did not have iron deficiency anaemia.  Conclusions: IDA is frequently found in microcytic anaemia patients. Thus, it is important to screen premenopausal in female patients for iron deficiency presenting with microcytic anaemia to prevent adverse outcomes.

Background: COVID-19 is an infectious disease, categorized as a global pandemic. Daily implications and coping strategies of pregnant women with coronavirus outbreak is currently unknown. This study will assess their knowledge, attitude, and practices (KAP), risk perceptions, anxiety and concerns related to COVID-19.Methods: A hospital-based cross-sectional survey was conducted in Karachi. Self-reported questionnaires including KAP, generalized anxiety disorder (GAD) scale and perception of pregnancy risk questionnaire were administered. Descriptive statistics were calculated for continuous variables and were reported as mean ± standard deviation. Frequencies and percentages were computed for categorical variables. Pearson correlation was calculated to explore linear associations among the perception of pregnancy risk, age, body mass index (BMI), and gestation. All data analysis was done using STATA 16.0.Results: The 575 pregnant women were enrolled with an average age of 26.07 years and 27.22±8.99 gestational age. Their knowledge showed that 92.2% knew that coronavirus causes COVID-19 and 72.30% knew the importance of wearing masks. Regarding attitudes, 96.3% felt safe to breastfeed their newborns, 80.20% considered changing their birth method whereas 54.6% were not concerned about the outbreak and around 70-80% cancelled their social gatherings. 72% trusted healthcare frontline staff with their struggle towards COVID-19. The 43.82% women were more anxious (scoring ≥7) and 56.17% were less anxious (<7) on GAD scale. The mean score for perceived risk for baby and mother was 22.95±13.72 and 19.40±0.57 respectively.Conclusions: Considering the burden of COVID-19, pregnant women’s perception is a major contributor to her and her baby’s health and wellbeing. Well-planned strategies by media, healthcare providers and government would significantly support such pregnant women during COVID-19.

Objective: To determine the frequency of polycystic ovarian syndrome (PCOs) amongst the reproductive age women by ultrasound.