Results 101 to 110 of about 2,150 (191)

Estimation of lost circulation amount occurs during under balanced drilling using drilling data and neural network

open access: yesEgyptian Journal of Petroleum, 2017
Lost circulation can cause an increase in time and cost of operation. Pipe sticking, formation damage and uncontrolled flow of oil and gas may be consequences of lost circulation. Dealing with this problem is a key factor to conduct a successful drilling
Pouria Behnoud far, Pantea Hosseini
doaj   +1 more source

Analisis City Branding Dalam Pengembangan Destinasi Pariwisata Kabupaten Jayapura [PDF]

open access: yes, 2016
Jayapura district is a district located in the province of Papua. Unidirectional on the vision and mission of "New Jayapura district" makes the Jayapura district currently holds the role as the major developments in the polar region in particular of ...
Bawanti, A. (Ari)
core  

A geostatistical approach for predicting the top producing formation in oil fields

open access: yesGeodesy and Cartography, 2012
Drilling engineer's understanding of the subsurface conditions of oil-rich regions in Iran is based on experience and through quantitative assessment of these valuable data.
Mohammad Abdideh, Majed Abyat
doaj   +1 more source

Genes of tumor necrosis factors and their receptors and the primary open angle glaucoma in the population of Central Russia [PDF]

open access: yes, 2017
To examine the association of genetic polymorphisms (-308)G/A TNFα, (+250)A/G Ltα, (+36)A/G TNFR1, (+1663) A/G TNFR2 with the development of primary open angle glaucoma (POAG) among people in Central ...
Churnosov, M.   +4 more
core  

Method for the fast determination of bromate, nitrate and nitrite by ultra performance liquid chromatography–mass spectrometry and their monitoring in Saudi Arabian drinking water with chemometric data treatment [PDF]

open access: yes, 2016
A rapid, sensitive and precise method for the determination of bromate (BrO3(-)), nitrate (NO3(-)) and nitrite (NO2(-)) in drinking water was developed with Ultra performance Liquid Chromatography-Mass Spectrometry (UPLC-ESI/MS).
Al-Omran.   +28 more
core   +1 more source

Sequence Stratigraphy of lower zones of Asmari Formation in Marun Oilfield by using of microfacies analysis, isolith maps and γ- Ray log

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2015
The Oligo- Miocene Asmari Formation is one of the most important reservoir units of the Marun Oilfield in Dezful Embayment SW Iran, deposited in Zagros foreland basin.
Ahmad Mirmarghabi   +5 more
doaj  

Reconstruction of Incomplete Data Sets orImages Using Direct Sampling [PDF]

open access: yes, 2018
With increasingly sophisticated acquisition methods, the amount of data available for mapping physical parameters in the geosciences is becoming enormous.
Mariethoz, Gregoire, Renard, Philippe
core  

Seismic velocity deviation log: An effective method for evaluating spatial distribution of reservoir pore types [PDF]

open access: yes, 2017
Velocity deviation log (VDL) is a synthetic log used to determine pore types in reservoir rocks based on a combination of the sonic log with neutron-density logs.
Faraji, M.   +3 more
core   +1 more source

Spread of Mutant Middle East Respiratory Syndrome Coronavirus with Reduced Affinity to Human CD26 during the South Korean Outbreak [PDF]

open access: yes
The newly emerging Middle East respiratory syndrome coronavirus (MERS-CoV) causes a severe respiratory infection with a high mortality rate (similar to 35%).
Aigerim, A   +16 more
core   +1 more source

In vitro anti-cholinesterase and antioxidant activity of extracts of Moringa oleifera plants from Rivers State, Niger Delta, Nigeria [PDF]

open access: yes, 2018
This study evaluated Moringa oleifera extracts from two locations in Niger Delta for in vitro anti-cholinesterase and antioxidant activities.
Adedapo   +14 more
core   +2 more sources

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