scholarly journals Study of the component composition of organic matter of the East Pre-Caucasian basin rocks based on the results of lithological, petrophysical and geochemical studies

Georesursy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 66-72
Author(s):  
R.S. Khisamov ◽  
Natalia Skibitskaya ◽  
Nikita Samokhvalov ◽  
Kazimir Kovalenko ◽  
Oleg Navrotsky
Keyword(s):  
Organic Matter ◽  
Component Composition ◽  
Separate Determination ◽  
Weight Concentration ◽  
Kerogen Type ◽  
Low Concentrations ◽  
Close Relationship ◽  
Geochemical Investigation ◽  
Geochemical Studies

This study introduces results of lithological, petrophysical and geochemical investigation of Lower Cretaceous (K1) and Middle Jurassic (J2a-b) rocks of East Pre-Caucasian basin. According to pyrolytic and bituminological studies method of separate determination of kerogen and bitumen concentration been developed. In accordance with this method differentiation of organic matter components in different lithotypes of rocks been described. Also relationship between bitumen and kerogen concentrations been revealed. The majority of samples have poor to fair organic richness and poor source potential. Kerogen type is commonly presented by type III and stages of maturity characterized by stages PC3 to MC3. Bitumen compounds have low concentrations of asphaltenes and aromatic hydrocarbons and mainly contains light and heavy resins. Based on petrophysical and geochemical studies a close relationship between the concentration of organic carbon and the weight concentration of potassium nuclides was obtained. This relationship indicates that kerogen in the sediments under consideration is associated with clay minerals, which is also confirmed by the mineral composition of the rocks.

Turkish policy towards Libya after the February 2011 revolution

2020 ◽  
pp. 31
Author(s):  
Rafea Shareef Dhanoon
Keyword(s):  
International Law ◽  
Military Cooperation ◽  
The West ◽  
Regional Parties ◽  
Spheres Of Influence ◽  
Close Relationship ◽  
Shed Light

The close relations between Turkey and Libya are still on the rise, and this was evident through Turkish support at all levels of the internationally recognized government of Al-Sarraj winner. The Memorandum of Understanding signed between Turkey and Libya on 27 / November 2019, in the areas of security and military cooperation and the determination of areas of influence revealed The navy, the extent of the historical close relationship between Ankara and Tripoli, just as the Turkish President Erdogan wanted to deliver a message to the West and other regional parties after the signing of the Memorandum of Understanding, that Turkey has a non-negotiable sovereign right to define the maritime spheres of influence and that this right stems from international law. In light of these tracks, we will shed light on the orientations of Turkish policy towards Libya after the February 2011 revolution, by defining the determinants of those trends and examining the most important obstacles in the march of Turkish policy towards Libya.

scholarly journals The Double Face of Ketamine—The Possibility of Its Identification in Blood and Beverages

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 813
Author(s):  
Magdalena Świądro ◽  
Paweł Stelmaszczyk ◽  
Irena Lenart ◽  
Renata Wietecha-Posłuszny
Keyword(s):  
Date Rape ◽  
Signal To Noise Ratio ◽  
High Sensitivity ◽  
Heroin Addiction ◽  
Assisted Extraction ◽  
Low Concentrations ◽  
High Concentrations ◽  
Rosé Wine ◽  
Tof Ms

The purpose of this study was to develop and validate a high-sensitivity methodology for identifying one of the most used drugs—ketamine. Ketamine is used medicinally to treat depression, alcoholism, and heroin addiction. Moreover, ketamine is the main ingredient used in so-called “date-rape” pills (DRP). This study presents a novel methodology for the simultaneous determination of ketamine based on the Dried Blood Spot (DBS) method, in combination with capillary electrophoresis coupled with a mass spectrometer (CE-TOF-MS). Then, 6-mm circles were punched out from DBS collected on Whatman DMPK-C paper and extracted using microwave-assisted extraction (MAE). The assay was linear in the range of 25–300 ng/mL. Values of limits of detection (LOD = 6.0 ng/mL) and quantification (LOQ = 19.8 ng/mL) were determined based on the signal to noise ratio. Intra-day precision at each determined concentration level was in the range of 6.1–11.1%, and inter-day between 7.9–13.1%. The obtained precision was under 15.0% (for medium and high concentrations) and lower than 20.0% (for low concentrations), which are in accordance with acceptance criteria. Therefore, the DBS/MAE/CE-TOF-MS method was successfully checked for analysis of ketamine in matrices other than blood, i.e., rose wine and orange juice. Moreover, it is possible to identify ketamine in the presence of flunitrazepam, which is the other most popular ingredient used in DRP. Based on this information, the selectivity of the proposed methodology for identifying ketamine in the presence of other components of rape pills was checked.

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