نتایج جستجو برای: riprap stone stability

تعداد نتایج: 324900  

Nowadays, with increasing problems related to lack of water resources and energy problems, the dam construction industry is dramatically expanding in our country. On the other hand, increase of threats to unify the vital systems of the country, causing financial losses through the use of various explosive devices, Has found a special need in the country. In this research, it has been attempted ...

2015
Ali Yusny Daud Osman Ghazali Mohd Nizam Omar

A stepping-stone connection has always been assumed as an intrusion since the first research on stepping-stone connections twenty years ago. However, not all stepping-stone connections are malicious. This paper proposes an enhanced stepping-stone detection (SSD) technique which is capable to identify legitimate connections from stepping-stone connections. Stepping-stone connections are identifi...

2013
Stefan Brandmaier Igor V Tetko

The quality criteria for experimental design approaches in chemoinformatics are numerous. Not only the error performance of a model resulting from the selected compounds is of importance, but also reliability, consistency, stability and robustness against small variations in the dataset or structurally diverse compounds. We developed a new stepwise, adaptive approach, DescRep, combining an iter...

Journal: :JOP : Journal of the pancreas 2002
Chun Xiang Jin Satoru Naruse Motoji Kitagawa Hiroshi Ishiguro Takaharu Kondo Shinobu Hayakawa Tetsuo Hayakawa

CONTEXT The role of protein components of pancreatic secretions has been controversial in pancreatic stone formation. OBJECTIVE To study the lithogenic role of pancreatic stone protein and lactoferrin in stone formation in chronic pancreatitis. PATIENTS Pancreatic stones were collected from 13 patients with alcoholic (n=6) and nonalcoholic (n=7) chronic calcified pancreatitis. MAIN OUTCOM...

2017
Shimpei Yamashita Yasuo Kohjimoto Yasuo Hirabayashi Takashi Iguchi Akinori Iba Masatoshi Higuchi Hiroyuki Koike Takahito Wakamiya Satoshi Nishizawa Isao Hara

BACKGROUND It remains controversial as to whether active stone removal should be performed in patients with poor performance status because of their short life expectancy and perioperative risks. Our objectives were to evaluate treatment outcomes of active stone removal in patients with poor performance status and to compare life prognosis with those managed conservatively. METHODS We retrosp...

Journal: : 2021

The article considers the history of word orlets, one names rhodonite (located mainly in Middle Urals). author traces changes semantics this from its first mention Russian lexicography at end 18th century to present day, when it gained status obsolescence. Specifically, demonstrates that meaning ‘rhodonite’ was assigned only by 19th century. paper presents and comments on existing hypotheses or...

Journal: :International braz j urol : official journal of the Brazilian Society of Urology 2005
Mina S Krishnamurthy Paul G Ferucci Noel Sankey Paramjit S Chandhoke

PURPOSE Several factors determine the success of extracorporeal shockwave lithotripsy (SWL) for kidney stones: stone size, stone location within the collecting system, stone type, and the SWL machine used. It has been suggested that stone radiodensity, as determined either by plain radiography or computed tomography attenuation values, may be an independent predictor of SWL success. We examined...

2018
Muhammad Waqas Imad-Ud-Din Saqib Muhammad Imran Jamil Mohammad Ayaz Khan Saeed Akhter

Purpose To evaluate the impact of various computed tomography scan-based parameters of renal stones on the outcome of extracorporeal shock wave lithotripsy (ESWL). Materials and Methods We conducted a retrospective study of patients who underwent ESWL for renal stones (sized 5-20 mm) from January 2013 to December 2016. We evaluated body mass index, location of the stone, skin-to-stone distanc...

2016
Widi Atmoko Ponco Birowo Nur Rasyid Manint Usawachintachit Frederick Singer

Objectives: Percutaneous nephrolithotomy on staghorn calculi is challenging for urologists because it is difficult to remove all of the stones. The purpose of this study was to evaluate the associated factors of stone-free rate after primary percutaneous nephrolithotomy on staghorn calculi in a large series of patients at a single, tertiary referral, endourologic stone center. Methods: We colle...

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