the main role ofcore in earth dams is to reduce and control the seepage flow through the dam. in order to achieve this purpose, the core material is usually selected from pure or mixed clays.due to very small coefficient of permeability, the clay cores can prevent water leakageeasily. however, pore water pressures developed inside the core during construction, can not be dissipated quickly. as ...

Maternal hypothyroidism during pregnancy impairs brain function in human and rat offspring, but little is known regarding the influence of maternal hyperthyroidism on neurodevelopment. We have previously shown that the expression of neuronal and glial differentiation markers in fetal brain is compromised in hypothyroid rat dam pregnancies and have now therefore extended this investigation to hy...

Lactation is an important function that is dependent on changes in the maternal homeostasis and sustained by histological maternal adjustments. We evaluated how offspring manipulations during the lactational phase can modulate maternal morphologic aspects in the mammary gland, adipose tissue, and pancreatic islets of lactating dams. Two different models of litter-manipulation-during-lactation w...

The site for the high Quxue Dam has a narrow canyon with very steep abutments and complex geology in Sichuan Province, China. Various types of embankment concrete dams were considered an asphalt-core dam (ACED), 174 m high, was selected. asphalt core is slender impervious element some concerns have been raised about reliability safety type (ACEDs). This paper presents case study highest ever bu...

Introduction In the foreword to the Malaysian Guidelines for Operation, Maintenance and Surveillance of Dams (Malaysian Inter-Departmental Committee on Dam Safety 1989), it is stated “The expanding inventory of dams has brought into focus the subject of dam safety”. At the time of the guideline publication, there had been a considerable increase in the inventory of dams with those constructed d...