نتایج جستجو برای: sectional ducts

تعداد نتایج: 203776  

2009
Markus Stoffel

Past activity of geomorphic processes can be reconstructed on tree-ring series using the presence of injuries, reaction wood or abrupt changes in the annual increment. The analysis of these features provides valuable data on years with process activity. In contrast, an intra-annual dating has so far normally only been possible through the analysis of injuries. In this technical note, it is show...

2012
Monika Jacob Faisal Yusuf Heinz Jürgen Jacob

The Wolffian ducts (proand mesonephric ducts) are the most important and earliest structures formed during the development of the urogenital system in vertebrates including humans. The Wolffian ducts originate in the prospective cervical region of the young embryo but later migrate caudally inducing the development of the pronephric and mesonephric tubules along their migratory route. In additi...

Journal: :Indoor air 2002
R Holopainen M Tuomainen V Asikainen P Pasanen J Säteri O Seppänen

The aim of this study was to evaluate the amount of dust in supply air ducts in recently installed ventilation systems. The samples for the determination of dust accumulation were collected from supply air ducts in 18 new buildings that have been constructed according to two different cleanliness control levels classified as category P1 (low oil residues and protected against contaminations) an...

Journal: :Folia morphologica 2004
Błazej Ciesielczyk Marek Nowik

The aim of this work is to assess the usefulness of current imaging techniques of biliary tracts in percutaneous transhepatic biliary drainage (PTBD). In the period from January 1996 to March 2003 44 cases of PTBD were carried out under ultrasonographic and X-ray control in 34 patients who could not have a bypass or endoscopic prothesis of the bile duct. The effectiveness of the method was eval...

2014
Gayathri

The uterus is formed during embryogenesis by the fusion of the two paramesonephric ducts (also called mullerian ducts). This process usually fuses the two mullerian ducts into a single uterine body. Incomplete fusion of the mullerian ducts results in uterine malformation like uterus didelphus, uterus bicornis bicollis, uterus bicornis unicollis, uterus subseptate, uterus arcuate, and uterus uni...

Journal: :Journal de radiologie 2007
V Laurent S Corby C Barbary E Kermarrec S Béot D Régent

Mangafodipir trisodium (Teslascan) is a hepatobiliary contrast agent that provides noninvasive opacification of the bile ducts. Using this contrast medium combined with a T1-weighted gradient echo enhanced sequence provides functional imaging of the bile ducts. Second-intention MRI was obtained after the usual morphological study of the bile ducts using heavily T2-weighted sequences (SS-FSE Te ...

2012
Hung-Chang Lee Chuen-Bin Jiang Wai-Tao Chan Chun-Yan Yeung

The biliary trees descend from the canaliculi at the hepatocytes in the liver. Bile drains from this level into intrahepatic ducts, smaller ducts combine to form the segmental bile ducts which within the liver gradually enlarge and merge to the right and left hepatic ducts. The right and left hepatic ducts join together to form the common hepatic duct (CHD) at porta hepatis. The common bile duc...

2002
Ariton E. Xhafa Ozan K. Tonguz Ahmet G. Cepni Daniel D. Stancil Pavel V. Nikitin Dagfin Brodtkorb

Abstract— In this paper, we report theoretical channel capacity estimates of heating, ventilation, and air-conditioning (HVAC) ducts based on multi-carrier transmission that uses M-QAM modulation and measured channel responses at 2.4 GHz Industrial, Scientific, and Medical (ISM) band. It is shown that, data rates in excess of 1 Gbps are possible over distances up to 500 m in “matched” ducts (on...

Journal: :Development 1991
A Harris G Chalkley S Goodman L Coleman

The specialised epithelia lining the respiratory tract, pancreatic ducts, male genital ducts and sweat gland ducts are defective in the severe inherited disease, cystic fibrosis (CF). We have looked at the expression of the CF gene in human fetal tissues to throw light on the development of function in specialised ductal epithelia and to determine the age of onset of the CF disease process. The...

2017
Katherine S. Garman

The origin of the progenitor cell for Barrett's esophagus remains a major unsolved mystery. Understanding the source of this progenitor may improve strategies to prevent the development of esophageal adenocarcinoma. Esophageal submucosal glands (ESMGs) and ducts may serve as a potential source of progenitor cells that respond to esophageal injury. Through the use of human histologic and molecul...

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