background: chemicals are among risk factors that can affect women's reproductive system. this study is aimed to investigate the association of occupational exposure to a mixture of organic solvents with menstruation disturbances and hormonal changes among female workers. methods : female workers of a pharmaceutical company were divided into three groups of non-exposed, low-exposed and highly-e...

The volume is divided into two parts: (1) the place of mental hygiene in public health, including factors of responsibility, leadership, methods, organization, and services; and (2) the development of the individual, including factors of personality development, eugenics, and prenatal to so-called old age periods. There is a useful review of psychopathological states and of visual aids, with bo...

Plant hormones have been studied for more than a century because they have been heavily implicated in the control of plant growth and development. For many years, they have been considered to fall into five classes: auxins, cytokinins, gibberellins, abscisic acid and ethylene. More recently, a variety of additional classes such as brassinosteroids have been added and it seems likely that more w...

As humans grow from children into adults, they pass through a stage called adolescence. Adolescence is time of major social, environmental, and biological change in person’s life. The start puberty, which often happens around the teenage years, an important period human physical emotional development. In addition to more obvious bodily changes that happen during this time, adolescent’s brain al...

background: one of the new methods for elimination or destruction of estrogen hormones is ultrasound irradiation. the aim of this study was to determine the main mechanism of steroid hormones removal by ultrasound. methods: in this study, estrogen (e1) and 17 beta-estradiol (e2) were irradiated with ultrasound at different frequencies, powers, and exposure times in two cases: with and without b...

varying from the role of ionizing radiation in leukemogenesis to the repair and replication of DNA following injury. Each paper is presented in a succinct and well documented fashion by an authority in the field. The illustrations are excellent and the free discussions of the various topics are both informative and provocative. This book is not for the clinician, but it should be on the shelf o...

THE ACTIONS OF ANTIDIURETIC hormone or vasopressin (AVP) to promote water retention and to acutely increase arterial pressure are well established. Oxytocin (OT) has well known effects on uterine contraction and milk ejection. In addition to these widely recognized hormonal actions, these peptides have additional behavioral, autonomic, renal, and cardiovascular effects, the physiological signif...