نتایج جستجو برای: extraction of drainage networks

تعداد نتایج: 21239837  

Journal: :The British journal of ophthalmology 1976
E J O'Connell A G Karseras

Loss of visual field subserving macular function has been found to be rare after intraocular surgery in advanced glaucoma. Abrupt changes in refractive error, lens opacity, and suppression must be carefully excluded before macular fixation is deemed lost. Out of 69 intraocular procedures (46 drainage operations, 13 cataract extractons) two patients lost central visual field subserving macular f...

Road extraction using remote sensing images has been one of the most interesting topics for researchers in recent years. Recently, the development of deep neural networks (DNNs) in the field of semantic segmentation has become one of the important methods of Road extraction. In the Meanwhile The majority of research in the field of road extraction using DNN in urban and non-urban areas has been...

2010
N. Thommeret J. S. Bailly

To study gully spatial patterns in the badlands using a continuous thalweg vector network, this paper presents methods to extract the badlands’ thalweg network from a regular grid digital terrain model (DTM) by combining terrain morphology indices with a drainage algorithm. This method will delineate a thalweg only where the DTM denotes a significant curvature with respect to DTM accuracy and r...

2012
Benjamin A. Black J. Taylor Perron Devon M. Burr Sarah A. Drummond

[1] Drainage networks on Titan, Earth, and Mars provide the only known examples of non-volcanic fluvial activity in our solar system. The drainage networks on Titan are apparently the result of a methane-ethane cycle similar to Earth’s water cycle. The scarcity of impact craters and the uneven distribution of fluvial dissection on Titan suggest that the surface may be relatively young. The purp...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم پایه 1388

آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...

Future exploitation scheme of an oil reservoir in each cycle within its production life depends on the profitability of the current extraction scenario compared with predicted recoveries that acquire with applying other available methods. In fractured reservoirs appropriate time to pass from the gas injection process into chemical enhanced oil recovery (EOR) firmly depends on the oil extraction...

Journal: :Turkish journal of urology 2013
Cavit Ceylan Öner Odabaş Serkan Doğan Metin Yığman

Pancreatic fistula (PF) is an important complication that may develop during intra-abdominal surgeries and following distal pancreas trauma. In the early period, drainage from the surgical site and increased amylase production based on the biochemical examination of the drainage fluid are the factors for diagnosis. In contrast, in association with fluid collected from the surgical site, intra-a...

Journal: :Journal of Geophysical Research: Planets 2004

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