scholarly journals MET overexpression assessed by new interpretation method predicts gene amplification and poor survival in advanced gastric carcinomas

2013 ◽  
Vol 26 (12) ◽  
pp. 1632-1641 ◽  
Author(s):  
Sang Y Ha ◽  
Jeeyun Lee ◽  
So Y Kang ◽  
In-Gu Do ◽  
Soomin Ahn ◽  
...  
2020 ◽  
Author(s):  
Nikita Seleznev ◽  
◽  
Tarek M. Habashy ◽  
Michel Claverie ◽  
Hanming Wang ◽  
...  

2015 ◽  
Vol 141 (11) ◽  
pp. 1945-1952 ◽  
Author(s):  
Ghasem Janbabai ◽  
Ziaeddin Oladi ◽  
Touraj Farazmandfar ◽  
Tarang Taghvaei ◽  
Farshad Naghshvar

Gut ◽  
2015 ◽  
Vol 65 (4) ◽  
pp. 635-646 ◽  
Author(s):  
Lixia Xu ◽  
Xiaoxing Li ◽  
Muyan Cai ◽  
Jinna Chen ◽  
Xiangchun Li ◽  
...  

2016 ◽  
Vol 4 (2) ◽  
pp. SF31-SF53 ◽  
Author(s):  
Oyinkansola Ajayi ◽  
Carlos Torres-Verdín

Neutron logs are routinely expressed as apparent neutron porosity based on the assumption of a freshwater-saturated homogeneous formation with solid composition equal to either sandstone, limestone, or dolomite. Rock formations are often extremely heterogeneous and consist of different minerals and fluids in varying proportions, which cause simultaneous matrix and fluid effects on neutron logs. Detailed quantification of formation mineral composition enables the correction of matrix effects on measured neutron logs to unmask fluid effects; this in turn enables accurate quantification of porosity and water saturation. Neutron-induced gamma-ray spectroscopy is one of the most direct means available to quantify in situ formation mineralogy but available spectroscopy-based interpretation methods are usually tool dependent and incorporate empirical correlations. We have developed a new interpretation method to quantify mineral concentrations through the joint nonlinear matrix inversion of measured spectroscopy elemental weight concentrations and matrix-sensitive logs, such as gamma ray, matrix photoelectric factor, matrix sigma (neutron capture cross section), and matrix density. The estimated mineralogy was used in the correction of matrix effects on porosity logs and subsequent calculation of true formation porosity. The water saturation was quantified through joint petrophysical interpretation of matrix-corrected porosities and resistivity measurements using an appropriate saturation model. The developed inversion-based interpretation method is applicable to a wide range of formation lithologies, well trajectories, and borehole environments (including open and cased hole environments), and it is independent of tool and neutron source type. Verification results with synthetic and field cases confirm that the spectroscopy-based algorithm is reliable and accurate in the quantification of mineral concentrations, matrix properties, porosity, and hydrocarbon saturation.


2014 ◽  
Vol 919-921 ◽  
pp. 382-387
Author(s):  
Man Xu ◽  
Zhi Hua Chen ◽  
Bin Zeng ◽  
Wang Li Ye ◽  
Kai Fu Chen

The karst cavities can cause great harm to the construction or running of expressway. During the construction of expressway, the detection of these unfavorable geological objects is usually by use of high density resistivity method, and the physical background of the method is the combination of high resistivity of bedrock and low resistivity of karst cavities. In the study area, the Kaihua segment of Hangzhou-Xinanjiang-Jingdezhen Expressway, the widely distributed rich carbonaceous bedrock shows low resistivity, and the conventional interpretation idea of high density resistivity method is not applicable. The research results of this paper suggest that the U shape of relative high resistivity can be an indicative for detection of unfavorable geological objects such as karst cavities. 6 out of 11 boreholes drilled for purpose of calibration revealed karst cavities, and the karst ratio is from 1.2% to 10.3%, indicating the new interpretation method is feasible and reliable.


2000 ◽  
Vol 31 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Thomas P. Brien ◽  
Robert D. Odze ◽  
Christine E. Sheehan ◽  
Barbara J. McKenna ◽  
Jeffrey S. Ross

Author(s):  
Shigeaki Asakura ◽  
Hitoshi Takezaki ◽  
Hitoshi Mikada ◽  
Masafumi Fukuhara ◽  
Masatoshi Nishi

2016 ◽  
Vol 29 (9) ◽  
pp. 1095-1103 ◽  
Author(s):  
Soomin Ahn ◽  
Jeeyun Lee ◽  
Mineui Hong ◽  
Seung Tae Kim ◽  
Se Hoon Park ◽  
...  

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