A quantitative evaluation of Playfair's law and its use in testing long-term stream erosion models

2001 ◽  
Vol 26 (12) ◽  
pp. 1317-1332 ◽  
Author(s):  
Jeffrey D. Niemann ◽  
Nicole M. Gasparini ◽  
Gregory E. Tucker ◽  
Rafael L. Bras
Keyword(s):  
Quantitative Evaluation ◽  
Erosion Models ◽  
Stream Erosion

Long-term quantitative evaluation of liver transplantation in familial amyloid polyneuropathy (Portuguese V30M)

Amyloid ◽  
2002 ◽  
Vol 9 (2) ◽  
pp. 126-133 ◽  
Author(s):  
Mamede de Carvalho ◽  
Isabel Conceiçato ◽  
Carla Bentes ◽  
M. L. Sales Luis
Keyword(s):  
Liver Transplantation ◽  
Quantitative Evaluation ◽  
Familial Amyloid Polyneuropathy ◽  
Amyloid Polyneuropathy

scholarly journals Quantitative Evaluation of Vehicle Seat Driving Comfort During Short and Long Term Driving

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 111420-111432
Author(s):  
Mingyue Li ◽  
Zhenhai Gao ◽  
Fei Gao ◽  
Tianyao Zhang ◽  
Xingtai Mei ◽  
...  
Keyword(s):  
Quantitative Evaluation ◽  
Short And Long Term ◽  
Vehicle Seat

Quantitative Evaluation of Secondary Phases in a Weld Joint Made of COST F and FB2 Creep Resistant Steels

2017 ◽  
Vol 270 ◽  
pp. 183-188
Author(s):  
Dagmar Jandová
Keyword(s):  
Quantitative Evaluation ◽  
Creep Strength ◽  
Weld Joint ◽  
Precipitate Size ◽  
Secondary Phases ◽  
Creep Tests ◽  
Transmission Electron ◽  
Creep Resistant Steels ◽  
Term Creep

Conventional (CCT) and accelerated (ACT) creep tests of a weld joint made of COST F and COST FB2 steels were carried out over a temperature range from 550 °C to 650 °C. Fracturing of the crept specimens was located in the heat affected zone (HAZ) of the F steel. Two specimens were selected after CCT and ACT for quantitative evaluation of the precipitates and compared to the weld joint in as-received conditions. Scanning and transmission electron micrographs were used to measure the precipitate size. Both methods were compared and the accuracy of the results was discussed. It was concluded that ACT can simulate the precipitation of chromium carbides and structure recovery during long term creep exposures. However, precipitation of Laves phase during CCT was not recorded after ACT. Therefore, it is difficult to use ACT in this experiment for estimating the long term creep strength.

scholarly journals Method for Quantitative Evaluation of Spiral Tibial Fractures

2014 ◽  
Vol 21 (3) ◽  
pp. 27-33
Author(s):  
F. A Matsukatov ◽  
I. I Martel’
Keyword(s):  
Quantitative Evaluation ◽  
Preventive Measures ◽  
Term Treatment ◽  
Tibial Fractures ◽  
X Rays ◽  
Treatment Results ◽  
Long Term Treatment ◽  
Secondary Displacement ◽  
Series Of Experiments

To elaborate a method of quantitative evaluation of instable spiral tibial bones fractures as the basis for differential approach to secondary displacement prevention, x-rays of 312 patients were analyzed and a series of experiments to study spiral fractures peculiarities was performed. The factors responsible for the instable pattern of spiral tibial fractures were detected. Quantitative index of the risk of secondary displacement was calculated and preventive measures were elaborated on their basis. Proposed recommendations on secondary displacement prevention were used as a basis for the treatment of 83 patients using Matsukidis - Shevtsov apparatus. Long-term treatment results were studied in 59 (71%) patients. Excellent and good results were achieved in 51 (86.5%) and 8 (13.5%) patients, respectively. Neither satisfactory nor poor results were observed.

scholarly journals Freeze-Thaw Induced Gully Erosion: A Long-Term High-Resolution Analysis

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 549 ◽  
Author(s):  
Ingrid Luffman ◽  
Arpita Nandi
Keyword(s):  
Important Variable ◽  
Gully Erosion ◽  
Subtropical Climate ◽  
Freeze Thaw ◽  
Erosion Rates ◽  
Erosion Pins ◽  
Erosion Models ◽  
High Resolution Analysis ◽  
Resolution Analysis

Gullies are significant contributors of sediment to streams in the southeastern USA. This study investigated gully erosion in the clay-rich soils of east Tennessee under a humid subtropical climate. The aims of this study were to (1) estimate long-term erosion rates for different gully geomorphic settings, (2) compare patterns of erosion for the different settings, and (3) model the response of gully erosion to freeze-thaw events. Erosion was measured weekly from June 2012 to August 2018 using 105 erosion pins distributed in gully channels, interfluves, and sidewalls. Erosion rates were estimated from average slopes of lines of best fit of pin lengths versus time. Maximum and minimum temperature was calculated daily using an on-site weather station and freeze-thaw events were identified. Gully erosion was modeled using antecedent freeze-thaw activity for the three geomorphic settings. Long-term erosion rates in channels, interfluves, and sidewalls were 2.5 mm/year, 20 mm/year, and 21 mm/year, respectively; however, week-by-week erosion was statistically different between the three settings, indicating different erosive drivers. Models of erosion with lagged freeze-thaw variables explained up to 34.8% of the variability in erosion variables; sidewall erosion was most highly related to freeze-thaw activity. Freeze-thaw in prior weeks was an important variable in all erosion models.

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