scholarly journals Development of a saprophytic fungal inoculum for the biodegradation of sub-bituminous coal

2022 ◽  
Vol 4 (2) ◽  
Author(s):  
Imade Yolanda Nsa ◽  
Busayo Tosin Akinyemi ◽  
Maryam Bello-Akinosho ◽  
Simon Nnamdi Ezechukwu ◽  
Tomisin Bridget Bayode ◽  
...  
Keyword(s):  
Bituminous Coal ◽  
Value Added ◽  
Mucor Circinelloides ◽  
Control Site ◽  
The Other ◽  
Ageratum Conyzoides ◽  
Sida Acuta ◽  
Cunninghamella Bertholletiae ◽  
Purpureocillium Lilacinum ◽  
Coal Biodegradation

AbstractThe rhizospheres of the weeds Ageratum conyzoides, Axonopus compressus, Emilia coccinea, Synedrella nodiflora, Urena lobata and Sida acuta from a sub-bituminous coal mining site and a control site, without coal discards, were screened for new fungi with ability to degrade sub-bituminous coal in the laboratory. The isolates were identified by cultural and molecular methods. Seventeen out of the sixty-one fungal isolates tested could utilize sub-bituminous coal as an energy source. Upon further evaluation, only seven of these were promising candidates for coal biodegradation, and they were assayed for their biosolubilization and depolymerization activities to determine their mechanisms of coal biodegradation. Based on the accumulation of humic acid (HA), which is the marker for biosolubilization, Mucor circinelloides and Aspergillus tubingensis were the most active. On the other hand, Cunninghamella bertholletiae, Simplicillium subtropicum, Penicillium daleae and Trichoderma koningiopsis were the highest producers of fulvic acid (FA), the indicator of depolymerization. Purpureocillium lilacinum produced the lowest yields of both HA and FA compared to the other six coal-degrading candidates. The presence of laccase in Trichoderma koningiopsis, Penicillium daleae and Simplicillium subtropicum suggests a role for this enzyme in the enhancement of the coal biodegradation process. However, the inability to amplify the laccase gene in Cunninghamella bertholletiae indicates that another enzyme probably aids its coal bioconversion. The current investigation highlights the potentials of these strains in harnessing biotechnological processes of sub-bituminous coal conversion into value-added products, which could be extended to the bioremediation of coal-polluted soils. The fungi with the highest coal bioconversion capabilities belonged to Ascomycota and Zygomycota and were found in the rhizospheres of the weeds Emilia coccinea, Ageratum conyzoides and Axonopus compressus.

On the Future of the Financial Redistribution across Member States in the EU

2006 ◽  
Vol 56 (1) ◽  
pp. 1-43
Author(s):  
Sándor Richter
Keyword(s):  
Value Added ◽  
The Other ◽  
Current Debate ◽  
Member States ◽  
New Member States ◽  
Financial Position ◽  
Cross Member ◽  
Expenditure Structure ◽  
The Eu ◽  
Made In

The order and modalities of cross-member state redistribution as well as the net financial position of the member states are one of the most widely discussed aspects of European integration. The paper addresses selected issues in the current debate on the EU budget for the period 2007 to 2013 and introduces four scenarios. The first is identical to the European Commission's proposal; the second is based on reducing the budget to 1% of the EU's GNI, as proposed by the six net-payer countries, while maintaining the expenditure structure of the Commission's proposal. The next two scenarios represent radical reforms: one of them also features a '1% EU GNI'; however, the expenditures for providing 'EU-wide value-added' are left unchanged and it is envisaged that the requisite cuts will be made in the expenditures earmarked for cohesion. The other reform scenario is different from the former one in that the cohesion-related expenditures are left unchanged and the expenditures for providing 'EU-wide value-added' are reduced. After the comparison of the various scenarios, the allocation of transfers to the new member states in terms of the conditions prevailing in the different scenarios is analysed.

scholarly journals Effect of Fly Ash on Compressive Strength, Drying Shrinkage, and Carbonation Depth of Mortar with Ferronickel-Slag Powder

2021 ◽  
Vol 11 (3) ◽  
pp. 1037
Author(s):  
Se-Jin Choi ◽  
Ji-Hwan Kim ◽  
Sung-Ho Bae ◽  
Tae-Gue Oh
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Construction Industry ◽  
Bituminous Coal ◽  
Raw Materials ◽  
Drying Shrinkage ◽  
The Other ◽  
Test Results ◽  
Slag Powder ◽  
Ferronickel Slag

In recent years, efforts to reduce greenhouse gas emissions have continued worldwide. In the construction industry, a large amount of CO2 is generated during the production of Portland cement, and various studies are being conducted to reduce the amount of cement and enable the use of cement substitutes. Ferronickel slag is a by-product generated by melting materials such as nickel ore and bituminous coal, which are used as raw materials to produce ferronickel at high temperatures. In this study, we investigated the fluidity, microhydration heat, compressive strength, drying shrinkage, and carbonation characteristics of a ternary cement mortar including ferronickel-slag powder and fly ash. According to the test results, the microhydration heat of the FA20FN00 sample was slightly higher than that of the FA00FN20 sample. The 28-day compressive strength of the FA20FN00 mix was approximately 39.6 MPa, which was higher than that of the other samples, whereas the compressive strength of the FA05FN15 mix including 15% of ferronickel-slag powder was approximately 11.6% lower than that of the FA20FN00 mix. The drying shrinkage of the FA20FN00 sample without ferronickel-slag powder was the highest after 56 days, whereas the FA00FN20 sample without fly ash showed the lowest shrinkage compared to the other mixes.

scholarly journals The intersectoral linkage effects in Turkish economy: an application of static Leontief model

2009 ◽  
Vol 56 (3) ◽  
pp. 301-326
Author(s):  
Yay Gürkan ◽  
Serkan Keçeli
Keyword(s):  
Extraction Method ◽  
Manufacturing Industry ◽  
Value Added ◽  
The Other ◽  
Input Output ◽  
General Equilibrium Theory ◽  
Traditional Methods ◽  
Turkish Economy ◽  
Leontief Model ◽  
Linkage Effects

In this study, the leading activities of Turkish Economy whose changes in their structure of production, value-added and employment are interrelated with the other activities of the economy, are found by using the input-output model which is presented and called as an 'Application of the General Equilibrium Theory' by Leontief. For this purpose; firstly theoretical foundations of the input-output model are examined. After that, 59 activities of the 2002 Input-Output Table of the Turkish Economy are aggregated at 52 sectors and classified into three categories as Ricardo Sectors, High-Technology Sectors and Heckscher-Ohlin Sectors like Dasgupta and Chakraborty did for the Indian Economy in 2005. Then, the leading, key or strong activities of the economy that are more interrelated with other activities are calculated and found by the Static Leontief Model which is used by the Traditional Methods as the techniques to calculate the linkage effects like Chenery-Watanabe and Rasmussen methods to determine the sectors having the highest priority at investment policies according to the Hirschmanian Unbalanced Growth Model. As a result of the interpretation of Leontief Model, using the traditional methods of Chenery-Watanabe and Rasmussen while calculating the linkage effects rather than the hypothesis extraction methods like Strassert's Original Extraction Method, Cella's Extraction Method, Sonis' Pure Linkage Method and Dietzenbacher and Van der Linden's Method or a SAM (Social Accounting Method) model which does not omit the income generating process (distributing income among primary factors and households as a result of production) of a sector, in Turkey, the Heckscher-Ohlin Sectors mostly seen in the manufacturing industry which Kaldor refers as the engine of growth, are stronger than the other sectors.

scholarly journals Ocena efektu Harbergera-Laursena-Metzlera w polskim sektorze rolno-żywnościowym

2019 ◽  
Vol 106 (1) ◽  
pp. 36-50
Author(s):  
Jacek Strojny
Keyword(s):  
Current Account ◽  
Vector Autoregression ◽  
Value Added ◽  
Terms Of Trade ◽  
The Other ◽  
Food Sector ◽  
Exogenous Factor ◽  
Trade Shocks ◽  
Gross Value Added ◽  
The Current Account

The aim of the study was to asses the Harberger-Laursen-Metzler effect in Polish agro-food sector. The analysis covers period of 2002-2017. There was applied the vector autoregression (VAR) methodology. The outcome of the research revealed that permanent deterioration in terms of trade contributed to the current account of Polish agribusiness sector improvement. The temporary effect of terms of trade shocks was not indentified. Additionally, the research enabled recognition of gross value added (GVA) as the most exogenous factor of the VAR system. On the other hand most endogenous factor of the model is the current account. The variable permanent terms of trade is more exogenous factor than the current account.

scholarly journals Usandsynligheder, overkrydsninger og umuligheder. En retorisk tilgang til brud på den mimetiske karakternarrations kode

2011 ◽  
Vol 39 (112) ◽  
pp. 33-50
Author(s):  
James Phelan
Keyword(s):  
Value Added ◽  
Independent Sets ◽  
The Other ◽  
Reading Experience ◽  
Adventures Of Huckleberry Finn ◽  
Great Gatsby ◽  
The Great Gatsby ◽  
Present Tense ◽  
The One ◽  
Rhetorical Narratology

IMPROBABILITIES, CROSSOVERS, AND IMPOSSIBILITIES | Extending and to some extent revising some of his earlier work, James Phelan in this essay examines three kinds of “unnatural”departures from the mimetic code. Paralepsis (or implausible knowledgeable narration), simultaneous present-tense character narration, and a kind of departure not previously noticed, which he calls cross over narration: “an author links the narration of two independent sets of events by transferring the effects of the narration of the one to the other.” In spite of being rather different ways of breaching the mimetic code, the three breaks form a useful cluster for investigating underlying conventions of reading that can explain why readers often do not notice the breakes. Phelan thus induces two Meta-Rules of Readerly Engagement: The Value Added Meta-Rule underlies the principle that disclosurefunctions trump narrator functions, and stipulates that readers overlook breaks in the mimetic code when those breaks enhance their reading experience; the Story over Discourse Meta-Rule stipulates that once a narrative foregrounds its mimetic component, readers will privilege story elements over discourseelements, and thus be inclined to overlook breaks in the code. Four additional Rules are derived from the Meta-Rules in a reading of Adventures of Huckleberry Finn, which serves as an example ofimplausibly knowledgeable narration. Rules and Meta-Rules are then deployed in reading a passage of The Great Gatsby, exemplifying crossover narration. A discussion with Henrik Skov Nielsen about the simultaneous present-tense narration in Glamorama marks both the closeness and a certain differencein perspective between rhetorical narratology and Nielsen’s concept of narration without narrators.

Lean Thinking and the Innovation Process

2020 ◽  
pp. 479-498
Author(s):  
Hilal Hurriyet ◽  
Dilupa Nakandala
Keyword(s):  
Manufacturing Industry ◽  
Innovation Process ◽  
Value Added ◽  
The Other ◽  
Lean Thinking ◽  
Repetitive Processes ◽  
Improved Performance ◽  
Innovation Processes

This chapter analyses the evolution of lean thinking and its widening applications from its origin of the manufacturing industry towards the other industries with the emphasis on how organizations could learn from lean thinking for achieving improved performance of innovation processes. Based on the degree of novelty, uncertainty and complexity associated with innovation processes, direct adoption of lean thinking for optimization is considered to be challenging. We discuss that organizations need to realize that there are opportunities for lateral learning from lean applications that have benefited systematic repetitive processes such as manufacturing by adapting to innovation processes through identification and shedding of non-value added activities. By identifying several lean innovation approaches in practice for optimizing innovation process, we stress the need and opportunity for the adaptation of lean thinking to cater the special characteristics of innovation processes.

scholarly journals An experimental investigation into the effects of traffic noise on distributions of birds: avoiding the phantom road

2013 ◽  
Vol 280 (1773) ◽  
pp. 20132290 ◽  
Author(s):  
Christopher J. W. McClure ◽  
Heidi E. Ware ◽  
Jay Carlisle ◽  
Gregory Kaltenecker ◽  
Jesse R. Barber
Keyword(s):  
Traffic Noise ◽  
Visual Disturbance ◽  
Landscape Scale ◽  
Control Site ◽  
The Other ◽  
Chemical Pollution ◽  
Negative Effects ◽  
Bird Abundance ◽  
Stopover Site ◽  
Migratory Period

Many authors have suggested that the negative effects of roads on animals are largely owing to traffic noise. Although suggestive, most past studies of the effects of road noise on wildlife were conducted in the presence of the other confounding effects of roads, such as visual disturbance, collisions and chemical pollution among others. We present, to our knowledge, the first study to experimentally apply traffic noise to a roadless area at a landscape scale—thus avoiding the other confounding aspects of roads present in past studies. We replicated the sound of a roadway at intervals—alternating 4 days of noise on with 4 days off—during the autumn migratory period using a 0.5 km array of speakers within an established stopover site in southern Idaho. We conducted daily bird surveys along our ‘Phantom Road’ and in a nearby control site. We document over a one-quarter decline in bird abundance and almost complete avoidance by some species between noise-on and noise-off periods along the phantom road and no such effects at control sites—suggesting that traffic noise is a major driver of effects of roads on populations of animals.

The Economic Impact of Tourism in Israel: A Multi-Regional Input—Output Analysis

1997 ◽  
Vol 3 (4) ◽  
pp. 341-359 ◽  
Author(s):  
Daniel Freeman ◽  
Esther Sultan
Keyword(s):  
Spatial Distribution ◽  
Economic Impact ◽  
Value Added ◽  
The Other ◽  
Input Output ◽  
Output Analysis ◽  
Input Output Analysis ◽  
Regional Impacts

Tourism has become one of the main export services in Israel in the last five years. The objective of this study was to estimate the comprehensive contribution of tourism to the economy of Israel and its spatial distribution. The study measured the impacts (multipliers) on three levels: direct, indirect and induced. A multi-regional input–output (MRIO) model was used in this research because of its capability to evaluate the impacts of inter-regional interdependencies simultaneously with those of sectoral ones. The results were expressed as multi-regional input–output multipliers. The authors conclude that the sum of the value-added from indirect output was 4% of GDP, and that from induced impacts was 7% of the GDP. There were differences in the impacts within and outside the regions. The analysis of multi-regional impacts through the use of MRIO enabled the authors to estimate simultaneously the magnitude of the impacts within the region, the related impacts in other regions, and the feedback impacts due to the other regions' demand.

Computational Study of 16 kWth Furnace Cofired Using Pulverized Bituminous Coal and Liquified Petroleum Gas Operated in Un-Staged and Air-Staged Conditions

2020 ◽  
Vol 143 (8) ◽  
Author(s):  
Nitesh Kumar Sahu ◽  
Mayank Kumar ◽  
Anupam Dewan
Keyword(s):  
Particle Size ◽  
Coal Particle ◽  
Bituminous Coal ◽  
Computational Study ◽  
Pearson Correlation ◽  
Turbulence Models ◽  
The Other ◽  
Test Facility ◽  
Measured Temperature ◽  
Inlet Swirl

Abstract This paper presents a computational study on air-fuel combustion of bituminous coal and liquified petroleum gas (LPG) in a 16 kWth test facility with a coflow-swirl burner. The performance of three turbulence models is investigated for the furnace operated under both air-staged and un-staged conditions by comparing their predictions with the reported measurements of temperature and species concentrations. This comparison shows that the shear stress transport (SST) k–ω model and SST k–ω model with low-Re correction predict the profiles of temperature and species concentrations reasonably well, but significantly underpredict the temperature in the furnace core at axial locations away from the burner. On the other hand, the transition SST k–ω model provides better overall congruency with the measured temperature and species concentrations when compared with the other turbulence models used, as indicated by relatively higher values of the Pearson correlation coefficient at locations away from the burner. The present high-fidelity computational model developed is also capable of accurately simulating the effect of coal particle size on the furnace environment, which is verified by the match between the computational predictions and the experimental results for two different sized coal samples. The model is also used to investigate the effect of coal particle size on the internal recirculation zone (IRZ) and the reattachment length (LR) for the same inlet swirl number (SN). A decrease of nearly 50% in the coal sample size results in the increase of LR and IRZ length by 20% and 82.6%, respectively.

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