BACKGROUND Few studies present prospective data on the incidence of asthma. Its associations with sex and with prior and concurrent hay fever and eczema were examined in a nationally representative sample followed from birth to 23 years of age (British 1958 birth cohort). METHODS Reports of asthma or wheezy bronchitis, hay fever and eczema were obtained by interview of parents of children at ...

BACKGROUND One of the major obstacles in using artificial insemination to manage genetics of elephant population in captivity is the large variations in semen quality among ejaculates within the same and among individuals. The objectives of this study were to determine the influences of (1) age (2) seasonality (3) and circulating testosterone (SrTest), triiodothyronine (SrT3) and tetraiodothyro...

After the ossification of the mandibular symphysis, shortly after birth, changes in mandibular width would be expected to occur only by surface apposition or resorption on the buccal surfaces of the left and right mandibular halves. However, evidence for an opening hinge movement of the two mandibular halves around a vertical axis located in the region of the mandibular symphysis was recently f...

The fact that minimum wages seem especially binding for young workers has led some countries to adopt age-differentiated minimum wages. We develop a dynamic competitive two-sector labor market model where workerswith heterogeneous initial skills gain productivity through experience.We compare two equally binding schemes of single and age-differentiated minimumwages, and find that although diffe...

INTRODUCTION Food availability and access are strongly affected by seasonality in Ethiopia. However, there are little data on seasonal variation in Infant and Young Child Feeding (IYCF) practices and malnutrition among 6-23 months old children in different agro-ecological zones of rural Ethiopia. METHODS Socio-demographic, anthropometry and IYCF indicators were assessed in post- and pre-harve...

Background: Male hypogonadism is a clinical disorder of low testosterone and spermatozoa due to impaired production that can occur at one or more levels in the hypothalamic-pituitary-gonadal (HPG) axis. Apart from iron accumulation, also other mechanisms thalassemia patients, such as influence adipose tissue leptin. The study aimed assess relationship between leptin with free BMI transfusion-de...

The corona at solar minimum generally differs greatly from that during active times. We discuss the current Cycle 23/24 minimum from the point of view of the occurrence of flares and CMEs (Coronal Mass Ejections). By comparison with the previous minimum, the flare/CME ratio diminished by almost an order of magnitude. This suggests that the environmental effect in flare/CME association differed ...

OBJECTIVES To describe knowledge and attitudes regarding sexually transmitted diseases (STD) in the same women followed longitudinally for 7 years from teenage years to early adulthood, and to relate the findings to sexual behaviour. METHODS A face to face interview and a questionnaire were completed by 79 young women when they were 16, 18, and 23 years old. RESULTS The questionnaire, testi...