The influence of the mass exchange rate on certain process indices in the autoclave leaching of uranium raw materials

1965 ◽  
Vol 19 (10) ◽  
pp. 798-803
Author(s):  
B.V. Nevskii ◽  
I.P. Smirnov ◽  
S.A. Pirkovskii
Keyword(s):  
Exchange Rate ◽  
Mass Exchange ◽  
Raw Materials ◽  
Autoclave Leaching

scholarly journals The Dynamic Impacts of the COVID-19 Pandemic on Log Prices in China: An Analysis Based on the TVP-VAR Model

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 449
Author(s):  
Chenlu Tao ◽  
Gang Diao ◽  
Baodong Cheng
Keyword(s):  
Exchange Rate ◽  
Structural Changes ◽  
Raw Materials ◽  
Supply And Demand ◽  
Oil Prices ◽  
Control Measures ◽  
Var Model ◽  
Time Varying ◽  
Wood Industry ◽  
The Impact

China’s wood industry is vulnerable to the COVID-19 pandemic since wood raw materials and sales of products are dependent on the international market. This study seeks to explore the speed of log price recovery under different control measures, and to perhaps find a better way to respond to the pandemic. With the daily data, we utilized the time-varying parameter autoregressive (TVP-VAR) model, which can incorporate structural changes in emergencies into the model through time-varying parameters, to estimate the dynamic impact of the pandemic on log prices at different time points. We found that the impact of the pandemic on oil prices and Renminbi exchange rate is synchronized with the severity of the pandemic, and the ascending in the exchange rate would lead to an increase in log prices, while oil prices would not. Moreover, the impulse response in June converged faster than in February 2020. Thus, partial quarantine is effective. However, the pandemic’s impact on log prices is not consistent with changes of the pandemic. After the pandemic eased in June 2020, the impact of the pandemic on log prices remained increasing. This means that the COVID-19 pandemic has long-term influences on the wood industry, and the work resumption was not smooth, thus the imbalance between supply and demand should be resolved as soon as possible. Therefore, it is necessary to promote the development of the domestic wood market and realize a “dual circulation” strategy as the pandemic becomes a “new normal”.

scholarly journals THE EFFECT OF IMPORT FACILITIES FOR EXPORT PURPOSES, EXCHANGE RATES, AND INFLATION ON EXPORTS OF TEXTILES AND TEXTILE PRODUCTS

2020 ◽  
Vol 2 (2) ◽  
pp. 18-38
Author(s):  
Mohammad Fachrudin ◽  
Indah Puspitasari
Keyword(s):  
Exchange Rate ◽  
Exchange Rates ◽  
Textile Industry ◽  
Inflation Rate ◽  
Raw Materials ◽  
Export Performance ◽  
Fiscal Incentives ◽  
Panel Data Regression ◽  
Data Regression ◽  
The Government

The Import Facility for Export Purpose (KITE) is the Government's effort to encourage export performance. Companies that receive the KITE facility obtain fiscal incentives and export their product to import raw materials. The textile and textile product (TPT) industry is a strategic industry and has been determined by the Government as a pilot industry in the Roadmap for Making Indonesia 4.0. The textile industry relies on imported raw materials, so that the KITE facility is needed to encourage growth and increase product competitiveness in the international market. This study aims to determine the effect of the KITE facility, the rupiah exchange rate against the U.S. dollar, and the inflation rate on Indonesia's textile exports. We used a sample of 37 industrial textile companies in Indonesia that received the KITE facility  2016 to 2018. This study uses a panel data regression model with independent variables: KITE facility, exchange rates, inflation, and exported dependent variable. The results showed that the KITE facility had a positive and significant effect on the textile industry exports. In contrast, the exchange rate and inflation had a negative and significant impact on Indonesia's textile industry exports. This study's implications for the Government can be used to formulate a national strategy to increase export.

scholarly journals The Impacts of Oil Prices, Exchange Rate and COVID-19 Pandemic on BIST Petrochemical Market

2021 ◽  
Vol 7 (1) ◽  
pp. 17-33
Author(s):  
Seval Mutlu Çamoğlu
Keyword(s):  
Exchange Rate ◽  
Raw Materials ◽  
Oil Prices ◽  
Stock Market Index ◽  
Monthly Data ◽  
Information Index ◽  
Market Index ◽  
The Impact ◽  
Index Exchange ◽  
Liberal Market Economy

Stock markets are developing with the economic growth of the countries in a liberal market economy. Petrochemicals is an indicator of the performance of the country's industry with high inter-industry linkage by providing input to several sectors, producing various outputs with a certain number of raw materials. The COVID-19 pandemic period has affected all markets worldwide and caused fluctuations in the index values of large firms in the petrochemical industry in Borsa Istanbul (BIST). This study analyzes the impact of the pandemic period and change in the oil prices and exchange rate on the petrochemical market in Turkey. The monthly data of petrochemical stock market index, exchange rate, oil prices are used in this time series analysis. A pandemic information index representing the COVID-19 pandemic was derived and included in the model. According to the results, it is observed that the most important determinant of the fluctuations on the BIST petrochemical index is the oil prices. While a shock in oil prices negatively affects the BIST petrochemical index, the petrochemical index responds positively to the shock in the pandemic index.

scholarly journals Labour Force, National Savings and the Manufacturing Sector Productivity in Nigeria

2020 ◽  
Vol 64 (4) ◽  
pp. 459-473
Author(s):  
Adeyemi Babasanya ◽  
◽  
Olukayode Maku ◽  
Joseph Amaefule ◽  
◽  
...  
Keyword(s):  
Exchange Rate ◽  
Raw Materials ◽  
Manufacturing Sector ◽  
Labour Force ◽  
Industrial Sector ◽  
National Bureau ◽  
Growth And Survival ◽  
Long Run ◽  
Negative Effect ◽  
The Government

The study evaluated the role of sectoral labour force and the national savings on the manufacturing sector output in Nigeria from 1985 to 2019, a period of 35years. Data was sourced from Central Bank Of Nigeria (CBN) statistical bulletin various issues up until 2017, National Bureau of Statistics (NBS), and World Development Index (WDI). Data were analyzed using Vector Error Correction Model (VECM). The VECM result revealed that national savings and labour force have long run positive effect on the manufacturing sector output, while exchange rate and inflation have long-run negative effect on the manufacturing sector output. It could be deduced from this study that national savings, labour force in the industrial sector, inflation and exchange rate are very critical factors that determine the growth and survival of the manufacturing sector. Hence, it was recommended that the government look critically to the manufacturing sector and revamp the sector by making credit facility to the sector, and increase the use of domestic raw materials.

scholarly journals Globalization and Agricultural Sector Output in Nigeria

2020 ◽  
Author(s):  
Olusegun Akinwale Samson ◽  
Oluwabusayo Temitope Obagunwa
Keyword(s):  
Foreign Direct Investment ◽  
Exchange Rate ◽  
Direct Investment ◽  
Agricultural Sector ◽  
Raw Materials ◽  
Trade Openness ◽  
Series Data ◽  
Portfolio Investment ◽  
Foreign Portfolio Investment ◽  
Integration Test

This study examined the effect of globalization on agricultural sector development in Nigeria. The study employed annual time series data from Central Bank of Nigeria Statistical Bulletin between 1986 and 2018 which were analyzed with Autoregressive Distributed Lag technique. The result of the Bound co-integration test indicated that there is long run relationship among agricultural sector output, foreign direct investment, foreign portfolio investment as a percentage of gross domestic product, trade openness and exchange rate. The result of the ARDL revealed that trade openness, foreign portfolio investment and exchange rate stimulate agricultural sector output while foreign direct investment negatively influence agricultural sector output in Nigeria. It was concluded that globalization plays important role in the development and enhancement of agricultural sector output in Nigeria through openness and financial inflow to the sector. Thus, government should formulate policy frameworks that will enhance the trade relationship between the agricultural sector and other developed nations to facilitate the inflow of important raw materials for the sector’s productivity, government should formulate policies that will ease direct investment inflow into the agricultural sector by creating linkage between foreign multi-national companies and agricultural sector in Nigeria. Finally, it was recommended that exchange rate stability should be prioritized by the government and more foreign exchange subsidy should be given to the agricultural sector to facilitate the of importation of raw materials.

Influence of struts on cavity at subsonic speeds: Flow characteristics

2019 ◽  
Vol 233 (14) ◽  
pp. 5369-5379 ◽  
Author(s):  
Junjie Miao ◽  
Yuxin Fan
Keyword(s):  
Exchange Rate ◽  
Residence Time ◽  
Mass Exchange ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Critical Length ◽  
Flame Stabilization ◽  
Combined Cycle ◽  
Structure Parameters ◽  
Closed Cavity

Cavity–strut combined flame holder is a promising choice for turbine-based combined cycle engines with its excellent fuel distribution and flame stabilization. In this paper, the effects of the strut structure parameters on the flow characteristics in the cavity were investigated by using particle image velocimetry and numerical simulation. Experimental and numerical results show that the struts induce complex three-dimensional flow patterns, which have a significant influence on the cavity transverse vortex. The relative position between the cavity and the strut influences the critical length-to-depth ratio of the open cavity reverting to the closed cavity. The mass exchange rate of the cavity decreases with the increase in the space between the cavity and the struts, while it increases with the strut inclination angle increases. The variation law of mean cavity residence time with the structure parameters is exactly opposite to that of the mass exchange rate. Compared with a single cavity, at a high subsonic speed, the cavity–strut combined structure has the advantage of increasing the mass exchange rate and cavity residence time simultaneously.

scholarly journals A Comparative Analysis of Adjustment of Nigerian Selected Macro Economic Variables to Deregulated Exchange Rate System

2019 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Ifeoma Chinelo Amakor ◽  
Onyinye Eneh
Keyword(s):  
International Trade ◽  
Exchange Rate ◽  
Comparative Analysis ◽  
Raw Materials ◽  
Positive Influence ◽  
Real Sector ◽  
Economic Variables ◽  
Rate System ◽  
Sector Performance ◽  
Exchange Rate Level

This study is a comparative analysis of how Nigerian macro economic variables of Balance of Payment and Real Sector performance (surrogated by Real Gross Domestic Product) reacted to exchange rate deregulation in Nigeria. One of the reasons why countries deregulate their exchange rate is to avail themselves the benefits of international trade, and the international trade transaction of every nation is depicted in its balance of payment position. In order to ascertain the significance of Naira deregulated exchange rate on the selected variables, a pre and post deregulation analyses were carried out using Paired Sample T Test staring from 1960 to 1985 as pre deregulation period and 1986 to 2011 as post deregulation period. The result revealed that both Balance of Payment and Real Sector Performance reacted significantly to exchange rate deregulation. While the influence of deregulation of exchange rate on Balance of Payment was negative, it showed a positive influence on Real Sector performance. The researchers concluded that deregulation of exchange rate did not increase the Nigerian general export, but oil export only, which is also an indication that Nigerian domestic industries did not contribute significantly to the country’s export level. We recommend that the monetary authority can consider placing a crawling peg on Naira exchange rate level in order to regulate the level of currency depreciation; this will reduce the cost of production for the domestic industries as most of their raw materials are imported. Again the export ability of the Nigerian domestic industries can be enhanced by granting them export incentives such as free international packaging and external credit guarantee.

Influence of strut on cavity at subsonic speeds: Ignition characteristics

2020 ◽  
Vol 234 (8) ◽  
pp. 1369-1379 ◽  
Author(s):  
Junjie Miao ◽  
Yuxin Fan ◽  
Tianchi Liu
Keyword(s):  
Exchange Rate ◽  
Residence Time ◽  
Mass Exchange ◽  
High Speed ◽  
Imaging Techniques ◽  
Structural Parameters ◽  
Ignition Limit ◽  
Flame Stabilization ◽  
Structure Parameters ◽  
Ignition Characteristics

In high-speed airflow, the use of cavity and struts in combination can improve fuel distribution and flame-stabilization, but may weaken the ignition performance. Herein, the lean ignition characteristics of several cavity–strut flame holders in a tandem turbine-based combined cycles combustor are experimentally investigated with the flow fields by using particle image velocimetry and high-speed chemiluminescence imaging techniques. Additionally, the effects of the strut structure parameters on the lean ignition performance in the cavity are studied. Experimental results indicate that changes in structural parameters have the opposite effects on the ignition performance and the flame-propagation performance. Reducing the strut inclination angle has a contrary function with the decrease in the cavity–strut space, which also transforms the flame-stabilizing mechanism between strut-stabilizing and cavity-stabilizing, accompanied by the flame morphology behind strut changes from no-flame to intermittent-flame, and finally continuous-flame. The lean ignition limit changes with the structure parameters, mainly due to the inverse change in the mass exchange rate and cavity residence time. Compared with the single cavity, the proper cavity–strut combined structure has a wider lean ignition limit at high subsonic speeds due to the advantage of simultaneously increasing the mass exchange rate and cavity residence time.

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