Comparative Effect Of Crude Oil Products On Nitrogen Content Of Clarias gariepinus Juveniles

2009 ◽  
Vol 6 (2) ◽  
Author(s):  
HO Nwamba
Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4255
Author(s):  
Elżbieta Szaruga ◽  
Zuzanna Kłos-Adamkiewicz ◽  
Agnieszka Gozdek ◽  
Elżbieta Załoga

This paper presents the synchronisation of economic cycles of GDP and crude oil and oil products cargo volumes in major Polish seaports. On the one hand, this issue fits into the concept of sustainable development including decoupling; on the other hand, the synchronisation may be an early warning tool. Crude oil and oil products cargo volumes are a specific barometer that predicts the next economic cycle, especially as they are primary sources of energy production. The research study applies a number of TRAMO/SEATS methods, the Hodrick–Prescott filter, spectral analysis, correlation and cross-correlation function. Noteworthy is the modern approach of using synchronisation of economic cycles as a tool, which was described in the paper. According to the study results, the cyclical components of the cargo traffic and GDP were affected by the leakage of other short-term cycles. However, based on the cross-correlation, it was proved that changes in crude oil and oil products cargo volumes preceded changes in GDP by 1–3 quarters, which may be valuable information for decision-makers and economic development planners.


Significance Import-dependent Lebanon has faced acute energy shortages in recent months, reflecting poor infrastructure, unsustainable policies and a lack of hard currency. Leaders are exploring rival regional options for the supply of gas and oil products: primarily Iraq, Iran and Egypt gas via Jordan and Syria. Impacts Since Lebanon has no functional refinery, it would be unable to use direct crude oil imports. Reliable provision of petrol and diesel will ultimately require a painful complete end to subsidies. Installation of solar power is already happening rapidly through private initiatives, but its contribution will remain minor.


2018 ◽  
Vol 4 (1) ◽  
pp. 30
Author(s):  
Yuli Andriani ◽  
Hotmalina Silitonga ◽  
Anjar Wanto

Analisis pada penelitian penting dilakukan untuk tujuan mengetahui ketepatan dan keakuratan dari penelitian itu sendiri. Begitu juga dalam prediksi volume ekspor dan impor migas di Indonesia. Dilakukannya penelitian ini untuk mengetahui seberapa besar perkembangan ekspor dan impor Indonesia di bidang migas di masa yang akan datang. Penelitian ini menggunakan Jaringan Syaraf Tiruan (JST) atau Artificial Neural Network (ANN) dengan algoritma Backpropagation. Data penelitian ini bersumber dari dokumen kepabeanan Ditjen Bea dan Cukai yaitu Pemberitahuan Ekspor Barang (PEB) dan Pemberitahuan Impor Barang (PIB). Berdasarkan data ini, variabel yang digunakan ada 7, antara lain: Tahun, ekspor minyak mentah, impor minyak mentah, ekspor hasil minyak, impor hasil minyak, ekspor gas dan impor gas. Ada 5 model arsitektur yang digunakan pada penelitian ini, 12-5-1, 12-7-1, 12-8-1, 12-10-1 dan 12-14-1. Dari ke 5 model yang digunakan, yang terbaik adalah 12-5-1 dengan menghasilkan tingkat akurasi 83%, MSE 0,0281641257 dengan tingkat error yang digunakan 0,001-0,05. Sehingga model ini bagus untuk memprediksi volume ekspor dan impor migas di Indonesia, karena akurasianya antara 80% hingga 90%.   Analysis of the research is Imporant used to know precision and accuracy of the research itself. It is also in the prediction of Volume Exports and Impors of Oil and Gas in Indonesia. This research is conducted to find out how much the development of Indonesia's exports and Impors in the field of oil and gas in the future. This research used Artificial Neural Network with Backpropagation algorithm. The data of this research have as a source from custom documents of the Directorate General of Customs and Excise (Declaration Form/PEB and Impor Export Declaration/PIB). Based on this data, there are 7 variables used, among others: Year, Crude oil exports, Crude oil Impors, Exports of oil products, Impored oil products, Gas exports and Gas Impors. There are 5 architectural models used in this study, 12-5-1, 12-7-1, 12-8-1, 12-10-1 and 12-14-1. Of the 5 models has used, the best models is 12-5-1 with an accuracy 83%, MSE 0.0281641257 with error rate 0.001-0.05. So this model is good to predict the Volume of Exports and Impors of Oil and Gas in Indonesia, because its accuracy between 80% to 90%.


2021 ◽  
Vol 2020 (67) ◽  
pp. 154-184
Author(s):  
دانية اياد جاسم ◽  
أ. د . فلاح خلف علي

The oil refining industry in Iraq is one of the industries of strategic importance, and what these industries have been subjected to destruction, obsolescence and neglect in a way that led to the deterioration of oil products in quantity and quality, and in a manner that is not commensurate with Iraq's capabilities in the field of daily crude oil production, as well as its incompatibility with laws and standards. In addition to the inability of these industries to achieve self-sufficiency and resort to closing the gap through imports. The study assumes that rebuilding the oil refineries in Iraq on modern foundations commensurate with international environmental laws and standards, will contribute to achieving self-sufficiency in high-quality oil products and open new horizons for the refining industry. The study reached several conclusions, the most important of which are the most important reasons for the decline in the production of refineries in Iraq, failure to implement investment projects for the oil refineries sector, reliance on old methods of liquidation, obsolescence of treatment units, neglect of maintenance and maintenance operations, and continuous stops due to the interruption of electrical current, and sabotage of some pipelines that transport crude oil to the refineries. The researcher recommended that the existence of a strong sector of refineries in Iraq capable of securing energy sources and achieving self-sufficiency, in addition to its ability to compete, that achieving this goal requires working on building new and modern refineries and rehabilitating old refineries to increase production capacities and obtain high-quality oil products to Iraq can compete in the global


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