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The research of organic geochemistry has been carried out through the report of aliphatic hydrocarbon fraction biomarkers in Cepu Block oil, Wonocolo Formation, East Java. Organic geochemistry studies were carried out through biomarker analysis such as the depositional environment, the origin of organic compounds, and the maturity of Cepu Block crude oil samples. The biomarker was analyzed using extraction, fractionation, and structure identification methods by Gas Chromatography-Mass Spectrometer (GC-MS). The odd-to-even carbon number predominance of n-alkanes with a CPI value of 1.04 indicates that the organic material sample had low maturity. The indicator of maturity is also supported by the Ts/Tm ratio of 0.52, and the abundance of 17α(H),21β(H)-hopane which is lower than 17β(H),21a(H)-hopane, and the high abundance of 5α(H)-7-cholestene. The ratio of pristane/phytane (Pr/Ph) of 3.25 and Ts/(Tm+Ts) ratio of 0.34 indicates that the oil sample came from an oxidative depositional environment. The bimodal distribution of n-alkane biomarkers with a ratio of long-chain to short chains n-alkanes (Σ2/Σ1) of 1.25 indicates that the source of oil organic compounds comes from higher plants, bacteria, and algae. The presence of hopane and homohopane, 8β(H)-drimane and homodrimane compounds, and also the sterane group indicates the presence of bacterial input with bacteriohopanetetrol precursors produced by Archaebacteria. The results that have been obtained indicate that the Cepu Block oil sample, Wonocolo Formation has various organic sources with low maturity. [ABSTRACT FROM AUTHOR]

The structural, magnetic and thermal properties of Cr doped polycrystalline Fe2WO6 have been investigated. The Cr doped sample shows tetragonal space group of P42/mnm and crystallizes with inverse trirutile structure. All Cr doped samples shows antiferromagnetic-paramagnetic transition (TN), with increasing Cr percentage the TN is decreasing to low temperature and finally stable at Cr2WO6 antiferromagnetic phase (43K). The magnetic momentum increases with Cr doping and the strength of antiferromagnetic interaction is decreases due to the decreasing the percentage of half-filled Fe3+(3d5) eg orbitals. The heat capacity study on Cr doped samples shows fairly sharp λ-like peak near the ordering temperature indicates the existence of long range antiferromagnetic ordering in the present samples. [ABSTRACT FROM AUTHOR]

The purpose of this study is to extract similar term definitions used in the terminology of Japanese medical device adverse events. We employed Levenshtein and Jaro–Winkler distances as edit distances and Skip-gram, continuous-bag of words, and fast text to produce distributed representations in Word2Vec. A comparison of the accuracies of the models showed that Levenshtein distance had higher specificity whereas Skip-gram had higher sensitivity as compared to the other models. [ABSTRACT FROM AUTHOR]