scholarly journals A Comparison of Short‐term and Continuous Exposures in Toxicity Tests of Produced Waters, Condensate and Crude Oil to Marine Invertebrates and Fish

2021 ◽  
Author(s):  
Francesca Gissi ◽  
Joanna Strzelecki ◽  
Monique T. Binet ◽  
Lisa A. Golding ◽  
Merrin S. Adams ◽  
...  
Keyword(s):  
Crude Oil ◽  
Marine Invertebrates ◽  
Toxicity Tests ◽  
Short Term ◽  
Produced Waters

Impact of crude oil price on the socio-political environment of global countries

2019 ◽  
Vol 118 (3) ◽  
pp. 110-122
Author(s):  
Johnson Clement Madathil ◽  
Velmurugan P. S
Keyword(s):  
Crude Oil ◽  
Descriptive Analysis ◽  
Oil Price ◽  
Policy Framework ◽  
Political Environment ◽  
Policy Reforms ◽  
Crude Oil Price ◽  
Short Term ◽  
Political Impact ◽  
New Energy

Crude oil is known to have an impact on people’s life of both producers and consumers of crude oil countries. A producer country’s socio-political impact will be different from a consumer country’s socio-political impact. This paper aims to show that crude oil price has a socio-political impact on global countries through descriptive analysis. The study found that there were similarities in the movement of crude oil price and change in GDP of both India and United States and further Russia and Venezuela have had crude oil impact on their respective GDP’s, which has made them take policy reforms. The paper identifies changes in the policy framework due to influence of crude oil price and eventual changes in existing socio-political environment. Taking oil producing countries such as Russia and Venezuela as examples, this paper suggests that policy reforms are the key to having a stable socio-political environment. Russia shows us that having a flexible monetary policy can keep the budget dependence on crude oil reduced in the short term. On the other hand, for oil consuming countries, having a stable supply and moving to new energy sources is the key to tackle the influence of crude oil price on the socio-political environment of global countries.

Safety assessment of food-contact paper and board using a battery of short-term toxicity tests: European union BIOSAFEPAPER project

2005 ◽  
Vol 22 (10) ◽  
pp. 1032-1041 ◽  
Author(s):  
I. Severin ◽  
L. Dahbi ◽  
J. -C. Lhuguenot ◽  
M. A. Andersson ◽  
D. Hoornstra ◽  
...  
Keyword(s):  
European Union ◽  
Safety Assessment ◽  
Toxicity Tests ◽  
Short Term ◽  
Food Contact

scholarly journals Animal size and seawater temperature, but not pH, influence a repeatable startle response behaviour in a wide-ranging marine mollusc

2020 ◽  
Author(s):  
Jeff Clements ◽  
Kirti Ramesh ◽  
Jacob Nysveen ◽  
Sam Dupont ◽  
Fredrik Jutfelt
Keyword(s):  
Startle Response ◽  
Marine Invertebrates ◽  
Seawater Temperature ◽  
Effect Of Temperature ◽  
Short Term ◽  
Blue Mussels ◽  
Marine Mollusc ◽  
Closure Duration ◽  
Ecosystem Level ◽  
Animal Size

Startle response behaviours are important in predator avoidance and escape for a wide array of animals. For many marine invertebrates, however, startle response behaviours are understudied, and the effects of global change stressors on these responses are unknown. We exposed two size classes of blue mussels (Mytilus edulis × trossulus) to different combinations of temperature (15 and 19 °C) and pH (8.2 and 7.5 pHT) for three months and subsequently measured individual time to open following a tactile predator cue (i.e., startle response time) over a series of four consecutive trials. Time to open was highly repeatable on the short-term and decreased linearly across the four trials. Individuals from the larger size class had a shorter time to open than their smaller-sized counterparts. High temperature increased time to open compared to low temperature, while pH had no effect. These results suggest that bivalve time to open is repeatable, related to relative vulnerability to predation, and affected by temperature. Given that increased closure times impact feeding and respiration, the effect of temperature on closure duration may play a role in the sensitivity to ocean warming in this species and contribute to ecosystem-level effects.

Ewolucja bezpieczeństwa energetycznego Polski i Białorusi na międzynarodowym rynku ropy naftowej

2021 ◽  
Vol 19 (1) ◽  
pp. 121-139
Author(s):  
Maciej Mróz
Keyword(s):  
Crude Oil ◽  
Energy Policy ◽  
Energy Security ◽  
Political Instability ◽  
Building Energy ◽  
Energy Resources ◽  
Modern World ◽  
Short Term ◽  
Diversification Strategy ◽  
The Common

Access to energy resources has become one of the main challenges of energy security in the modern world. Due to the growing political instability of countries exporting energy resources, the energy security category should be perceived in a special way. Energy security is expressed, first of all, in stable access to energy resources at an acceptable price. The aim of the article is to determine to what extent the strategy of diversifying the sources of crude oil imports to Poland and Belarus is implemented in practice, and to what extent the implementation of this strategy is conducive to building energy security for both these countries. It seems that despite the similar geological and geographical conditions, as well as the common historical infrastructure heritage, Poland and Belarus shape their energy policy differently. The conducted analysis has an empirical dimension, as the REES index is used to measure the concentration of imports and the short-term risk for the security of crude oil supplies. The article shows that a properly implemented diversification strategy significantly improves the country’s energy security, which is possible due to the use of alternative directions for oil imports to the Russian one.

scholarly journals Immunotoxicity in Ascidians: Antifouling Compounds Alternative to Organotins—V. the Case of Dichlofluanid

2020 ◽  
Vol 8 (6) ◽  
pp. 396
Author(s):  
Francesca Cima ◽  
Roberta Varello
Keyword(s):  
Marine Invertebrates ◽  
Zinc Pyrithione ◽  
Short Term ◽  
Colonial Ascidian ◽  
Antifouling Paints ◽  
Glutathione Oxidation ◽  
Defence Responses ◽  
Sediment Interface ◽  
Sublethal Concentrations

Dichlofluanid has long been employed as a fungicide in agriculture and has been massively introduced in antifouling paints for boat hulls over the last two decades. One of the most important toxic effects of antifoulants is represented by immunosuppression in marine invertebrates, which can be analysed in vitro with a number of short-term toxicity assays on haemocytes. Among bioindicators, the colonial ascidian Botryllus schlosseri is a useful candidate; it is a filter-feeding organism living in the water-sediment interface that is found worldwide and is sensitive to antifouling xenobiotics. Dichlofluanid adversely affects both immunocyte lines (phagocyte and cytotoxic lines) after exposure to sublethal concentrations. At 0.05 μM (16.65 μg/L), dichlofluanid induced haemocyte apoptosis and cell shrinkage with a decrease in both motility and phagocytosis. At the lowest concentration (0.01 μM, 3.33 μg/L), inhibition of pivotal enzymatic activities of phagocytes and cytotoxic cells occurred. At the highest concentration (0.1 μM, 33.3 μg/L), dichlofluanid increased glutathione oxidation, leading to stress conditions. The effects of dichlofluanid on immune defence responses are similar to those of organometal-based antifoulants (i.e., organotin compounds and zinc pyrithione), and its use in coastal areas requires attention.

Impact of Canadian Regulatory Changes on Cross-Border Trade

1987 ◽  
Vol 5 (1) ◽  
pp. 65-78
Author(s):  
R. Priddle
Keyword(s):  
Natural Gas ◽  
Crude Oil ◽  
Reference Price ◽  
Export Performance ◽  
Load Factor ◽  
Regulatory Change ◽  
Productive Capacity ◽  
Short Term ◽  
Export Prices ◽  
Gas Markets

In the year following oil deregulation Canada's crude oil productive capacity grew by 5%, but production was unchanged due to a lack of pipeline capacity, the effects of prorationing and a lack of price flexibility. While Canadian oil demand remained stable, exports of crude oil increased by one-third and imports by one-half. Export prices followed world trends with light crude oil export prices declining from $C 40/bl to $C 15 in July 1986. Natural gas exports were down by 17% in the first nine months of the 1986 contract year. This period coincides with the implementation of the Agreement on Natural Gas Markets and Prices, but was also a period marked by declines in US gas prices, declining US gas demand, and significant changes in US gas industry regulation. Prices for gas exports by licence have been renegotiated and some short-term interruptible sales have been made. Export prices approached those for interprovincial sales, which typically offered a better load factor. Licence holders have been able to average export prices over all sales under a licence to satisfy the minimum export price requirement in relation to the domestic reference price. As a result, since the Agreement of 31 October 1985, all renegotiated prices for exports of gas by licence have been approved. The factors having the most impact on gas exports by licence appear to be the 6% decline in US gas demand, limitations on pipeline access during the period of transition in US pipeline regulation, priority given by US pipelines to managing lower-48 take-or-pay obligations, and the changing role of US pipelines to being transporters rather than merchants of gas to the detriment of some Canadian gas export contracts. Exports by licence were at a level of 42% of authorized volumes for most of 1986. Volume authorizations were therefore, not an impediment to exports by licence. There was no volume restriction for short-term exports by order. Gas exports by short-term interruptible order faced US pipeline access restrictions but were affected by the domestic reference price floor. Short-term interruptible exports grew rapidly after the Agreement, peaking in January 1986 and then declined as US competitive prices fell below comparable Canadian domestic prices. Short-term interruptible exports have accounted for only 3% of total exports in the first nine months of the current contract year. Canada's disappointing 1985–6 gas export performance was attributable to weak US gas markets, changing US market structures, and delayed US regulatory change. Although there has been some impact on short-term interruptible sales, the overall decline in gas exports was not significantly relatable to Canadian gas export regulation.

scholarly journals Impact of COVID-19 on Forecasting Stock Prices: An Integration of Stationary Wavelet Transform and Bidirectional Long Short-Term Memory

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Daniel Štifanić ◽  
Jelena Musulin ◽  
Adrijana Miočević ◽  
Sandi Baressi Šegota ◽  
Roman Šubić ◽  
...  
Keyword(s):  
Crude Oil ◽  
Stock Prices ◽  
Short Term Memory ◽  
Oil Price ◽  
Stationary Wavelet Transform ◽  
Crude Oil Price ◽  
Short Term ◽  
Term Memory ◽  
Long Short Term Memory ◽  
The Impact

COVID-19 is an infectious disease that mostly affects the respiratory system. At the time of this research being performed, there were more than 1.4 million cases of COVID-19, and one of the biggest anxieties is not just our health, but our livelihoods, too. In this research, authors investigate the impact of COVID-19 on the global economy, more specifically, the impact of COVID-19 on the financial movement of Crude Oil price and three US stock indexes: DJI, S&P 500, and NASDAQ Composite. The proposed system for predicting commodity and stock prices integrates the stationary wavelet transform (SWT) and bidirectional long short-term memory (BDLSTM) networks. Firstly, SWT is used to decompose the data into approximation and detail coefficients. After decomposition, data of Crude Oil price and stock market indexes along with COVID-19 confirmed cases were used as input variables for future price movement forecasting. As a result, the proposed system BDLSTM + WT-ADA achieved satisfactory results in terms of five-day Crude Oil price forecast.

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