نتایج جستجو برای: rockfill dams

تعداد نتایج: 8454  

Journal: Desert 2007
A. Esmaeili Nameghi A. Hassanli, M. Soufi

Abstract Spacing between check dams depends on the stream bed slope, effective height of check dams and slope of deposited sediments behind the check dams. The slope of deposited sediments is more important than the other two factors because of complications in the way of its occurrence and its measurement after several years of dam construction. This research presents the effective factors a...

Journal: :Pediatric dentistry 1991
A C O'Connell W H Bowen

Available evidence indicates that infants, for the most part, acquire their oral flora, in particular Streptococcus mutans, from their mothers. The purpose of this study was to explore the effect of rampant caries in rat dams on subsequent caries activity in their offspring. Rampant caries was induced by surgical desalivation of four dams, and subsequent infection with Streptococcus sobrinus 67...

Journal: :Journal of animal science 1999
S E Echternkamp K E Gregory

The effects of twinning, dystocia, retained placenta, and body weight on postpartum reproduction were evaluated for 3,370 single and 1,014 twin births. Females were bred by AI for 40 d followed by 20 or 30 d of natural service with equal numbers bred and calved in spring and fall. Percentage of dams cyclic by the end of the AI period was lower (P<.05) for dams birthing and nursing a single calf...

2016
Juyoung Kim Juhae Kim Young Hye Kwon

BACKGROUND/OBJECTIVES Changes in nutritional status during gestation and lactation have detrimental effects on offspring metabolism. Several animal studies have shown that maternal high-fat diet (HFD) can predispose the offspring to development of obesity and metabolic diseases, however the mechanisms underlying these transgenerational effects are poorly understood. Therefore, we examined the e...

Iran, as a leading country in the dam construction industry, is located in one of the earthquake-prone regions of the world. Dams are important sources of hydroelectric power. Failure of these structures causes catastrophic damage. Therefore, evaluating the behavior of dams under seismic loading is an important issue. The present study focuses on the prediction of the slope displacements of emb...

2006
DANIEL B. HAYES JOANNA LESSARD

—Dams provide many benefits to society, yet they have profound impacts on aquatic ecosystems. In addition to blocking fish migration, small surface-release dams on coldwater streams generally increase water temperature below the dam. The goal of this study was to evaluate how small, surface-release dams affect fish communities, separating the total effect into components related to fragmentatio...

2005
MERTICE M. CLARK

Previous research has revealed profound effects of prenatal interactions among littermates on the subsequent fecundity and behaviour of female Mongolian gerbils, Meriones unguiculatus. Here, we determined whether interlitter competition for maternal resources similarly affects female phenotypes. We found that, when adult, female Mongolian gerbils whose dams were both nursing while gestating the...

2014
Helieh S. Oz Thomas Tobin

BACKGROUND Toxoplasmosis is a common cause of foodborne, gastrointestinal and congenital syndrome with particularly severe or unknown health consequences. There is no safe and effective preventive or therapeutic modality against congenital toxoplasmosis or to eliminate the persistent chronic infection. HYPOTHESIS Diclazuril to be safe in pregnancy and effective against gastrointestinal toxopl...

Journal: :Journal of applied physiology 2007
Laura M Lintault Elzbieta I Zakrzewska Rhonda L Maple Lisa A Baer Theresa M Casey April E Ronca Charles E Wade Karen Plaut

Exposure of rat dams to hypergravity during pregnancy is associated with increased pup mortality, reduced food intake, and decreased rates of glucose oxidation and lipogenesis in mammary tissue. We hypothesized that increased pup mortality is due to changes in maternal metabolism and not to reduced food intake of dams. Effects of hypergravity on rate of glucose oxidation and lipogenesis in mamm...

2014
Lindert Benedictus Henny G Otten Gerdien van Schaik Walter GJ van Ginkel Henri CM Heuven Mirjam Nielen Victor PMG Rutten Ad P Koets

Bovine Neonatal Pancytopenia (BNP), a bleeding syndrome of neonatal calves, is caused by alloantibodies absorbed from the colostrum of particular cows. A commercial BVD vaccine is the likely source of alloantigens eliciting BNP associated alloantibodies. We hypothesized that the rare occurrence of BNP in calves born to vaccinated dams could be associated with genetic differences within dams and...

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