Considerable Economic Potential Research Articles

In-situ solvents generation enhanced steam assisted gravity drainage (ISSG-SAGD): A low carbon and high-efficiency approach for heavy oil recovery

The primary bottleneck in heavy oil production lies in the significant energy consumption and CO2 emissions associated with steam injection for recovery. To address this challenge, we propose the ISSG-SAGD (in-situ solvent generation enhanced steam assisted gravity drainage) technique. The recovery mechanisms and operational strategies are investigated using a numerical simulation with an Athabasca bitumen reservoir model, affirming the considerable environmental and economic potential of ISSG-SAGD. The results demonstrate that ISSG-SAGD integrates the recovery mechanisms of both SAGP (steam and gas push) and ES-SAGD (expanding solvent SAGD). Moreover, employing cyclic steam injection, maintaining low operating pressure, and initiating ISSG-SAGD at an early stage enable a 33.79 % reduction in steam consumption, a 39 % decrease in average carbon intensity, a 5.40 % increase in oil production, and a 61.28 % rise in net present value compared to conventional SAGD. This study proves that the ISSG-SAGD approach offers a sustainable and efficient alternative for future heavy oil recovery endeavors, addresses the challenges of high energy consumption and carbon emissions, and paves the way towards a green and economically viable future for the heavy oil development.

Molecular identification and safety assessment of the potential probiotic strain Bacillus paralicheniformis HMPM220325 isolated from artisanal fruit dairy products.

Bacillus probiotics exhibit considerable economic potential owing to their heightened resilience to external stressors and relatively lower costs related to production and preservation. Although Bacillus paralicheniformis has been acknowledged as a plant-promoting bacterium for a long time, understanding its potential as a probiotic is still in its nascent stages. In this study, the safety and probiotic characteristics of a strain of HMPM220325, isolated from artisanal fruit dairy products, were examined through whole-genome sequencing and phenotypic analysis. The whole genome of HMPM220325 was analyzed for antimicrobial resistance genes, pathogenicity factors, and genes associated with probiotic traits including stress resistance, spore formation, gut adhesion, competitive exclusion of pathogens, bacteriocin expression, and carbohydrate metabolism related to prebiotic utilization. Also, wet lab experiments were conducted for the characterization of probiotics. The identification of the organism as B. paralicheniformis was verified. Its safety was assessed through in silico analysis, the haemolytic activity test, and the acute oral toxicity test. B. paralicheniformis HMPM220325 demonstrated its ability to survive in the pH range of 4-10 and bile salt concentrations of 0-0.9% (w/v), tolerate temperatures between 20 and 60 °C, and exhibit a robust antioxidant capacity. Moreover, B. paralicheniformis HMPM220325 demonstrated a moderate level of hydrophobicity, had the ability to form biofilms, achieved a self-aggregation rate of 51.77 ± 1.01% within 6 hours, and successfully colonized the mouse intestine for a duration of up to 17 days. Additionally, the genome of B. paralicheniformis HMPM220325 contains three gene clusters associated with the biosynthesis of bacteriocins and exhibits co-aggregation with Staphylococcus aureus, Pseudomonas aeruginosa, and Salmonella enterica serovar Typhimurium. The findings of the genomic analysis align with those obtained from the experimental investigation, thereby substantiating the potential of B. paralicheniformis HMPM220325 as a probiotic suitable for incorporation in dairy functional foods and feed applications.

Combining genome-wide association study and transcriptome analysis to identify molecular markers and genetic basis of population-asynchronous ovarian development in Coilia nasus.

Coilia nasus, a migratory fish species found in the middle and lower reaches of the Yangtze River and along offshore areas of China, possesses considerable aquacultural and economic potential. However, the species faces challenges due to significant variation in the gonadal development rate among females, resulting in inconsistent ovarian maturation times at the population level, an extended reproductive period, and limitations on fish growth rate due to ovarian prematurity. In the present study, we combined genome-wide association study (GWAS) and comparative transcriptome analysis to investigate the potential single nucleotide polymorphisms (SNPs) and candidate genes associated with population-asynchronous ovarian development in C. nasus. Genotyping of the female population based on whole-genome resequencing yielded 2 120 695 high-quality SNPs, 39 of which were suggestively associated with ovarian development. Of note, a significant SNP peak on LG21 containing 30 suggestively associated SNPs was identified, with cpne5a determined as the causal gene of the peak. Therefore, single-marker and haplotype association analyses were performed on cpne5a, revealing four genetic markers ( P<0.05) and seven haplotypes (r 2>0.9) significantly associated with the phenotype. Comparative transcriptome analysis of precociously and normally maturing individuals screened out 29 and 426 overlapping differentially expressed genes in the brain and ovary, respectively, between individuals of different body sizes. Integrating the GWAS and transcriptome analysis results, this study identified genes and pathways related to hypothalamic-pituitary-gonadal axis hormone secretion, extracellular matrix, angiogenesis, and gap junctions involved in population-asynchronous ovarian development. The insights gained from this study provide a basis for a deeper understanding of the molecular mechanisms underlying ovarian development in fish and may facilitate the genetic breeding of C. nasus strains exhibiting population-synchronous ovarian development in the future.

The Use of Acid Leaching to Recover Metals from Tailings: A Review

Mine tailings deposits are often overlooked by the industry, posing significant environmental challenges due to chemical hazards and inadequate maintenance. Nevertheless, such mineral deposits hold considerable economic potential for processing, and the adoption of innovative technologies may also address critical chemical and physical stability issues. Existing research has demonstrated the feasibility of recovering target metals—i.e., copper, iron, manganese, cobalt, zinc, and others—through the application of acid leaching techniques with consistently high yields and metal recovery rates. Therefore, a compilation was carried out from 2008 onwards, on working conditions such as leaching agent, acid concentration, oxidizing-reducing reagent, particle size, O2 pressure, stirring speed, solid–liquid ratio, temperature, and leaching time. At present, there are no reviews on the recovery of metals via acid leaching in tailings, so this study can serve as support for future researchers who want to project themselves in this area, ordering the procedures and the results obtained by the research carried out. Regarding the evaluation, it can be commented that research has shown that acid leaching of tailings has achieved recoveries of over 90% in different metals, such as Zn, Cu, and Fe, which indicates that the treatment is efficient and recommended for different types of tailings.

Utilization of Nanobodies in Immunoturbidimetric Assays

Aims: Nanobodies, characterized by their small size, accessibility, and high yield, are emerging as advantageous tools in various applications. Despite these benefits, their integration into the formulation of immunoturbidimetric reagents has remained limited since their discovery.&#x0D; Methodology: This study utilized nanobodies specific to cystatin C to formulate immunoturbidimetric reagents and compared them with traditional rabbit polyclonal antibody reagents. &#x0D; Results: The findings revealed that the multiantibody affinity of Cys-rPAB surpasses that of Cys-VHH-104 and Cys-VHH-704 nanobodies, although the difference is not statistically significant. Upon evaluating the reagent formulation performance, both types of antibodies were found to satisfy the prerequisites of conventional immunoturbidimetric assay reagents. The correlation coefficient R2 in the statistical analysis of the clinical results was 0.9986, signifying a high degree of consistency.&#x0D; Conclusion: These findings underscore the feasibility and considerable economic potential of employing nanobodies in immunoturbidimetric reagents.

Pemanfaatan Teknologi Sel Surya untuk Optimalisasi Budidaya Ikan Lele Berbasis Sistem Biofloc-Aquaponic

Gadingkasri Village is one of the villages located in the Klojen District of Malang City which is located in the downtown area of Malang. The location of the village surrounded by a business center and several universities makes this village very strategic because it is a densely populated residential area with a combination of residential communities and students as boarding house residents. With this condition, Gadingkasri Village has considerable economic zone potential for its people. Gadingkasri Village, especially residents in RW. 3, there is a community of PKK mothers who are members of the Urban Farming Group who have a vision to green residential areas by gardening around settlements. One of the potentials that can be developed is to develop community activities in the Urban Farming community towards optimizing energy and increasing residents' income by raising catfish. The community service program through funding from the State University of Malang aims to maximize the existing potential through the use of appropriate technology. The method used in this service is a method of empowering catfish farming by utilizing appropriate technology engineering for sustainable alternative energy. The activities that have been carried out are in the form of mentoring, designing, installing aquaponic systems, and biofloc pools, and solar panels which will be alternative energy in supplying aquaponic pump electrical systems and biofloc ponds. The results of this service activity are expected to be an alternative energy source solution that can be used independently by RW residents. 3 Gadingkasri village. The empowerment of catfish with a biofloc system is also expected to be able to increase the economic income of residents

English

Moringa stenopetala is a multipurpose tree with considerable economic and social potential as it has vital nutritional, industrial, and medicinal applications. The study was aimed to investigate the antimicrobial activities of M. stenopetala seed oil against pathogenic microorganisms. M. Stenopetala seeds were collected from three locations (Damba Gofa, Shelle, and Konso) and extracted using two different solvents (hexane and petroleum ether). Pathogenic microorganisms: bacteria (gram-positive, Staphylococcus aureus, and gram-negative Escherichia coli) and the fungal strains (Trichophyton mentagrophytes and Candida albicans) were used in this study. Standard procedures were followed to determine antimicrobial activities of M. stenopetala extract against pathogenic microorganisms. The result revealed that M. stenopetala seed extract has shown inhibitory activity against T. mentagrophytes fungi at the concentration &ge; 12.5% at all locations and both extraction solvents used. However, the extract did not show any inhibitory activity against tested bacteria and C. albicans fungi. The finding indicated that M. stenopetala seed could be used as an alternative to chemical fungicide to control T. mentagrophytes fungi. Further investigation is needed on the identification of compounds that inhibits the pathogenic microorganism. &nbsp; Key words: Antimicrobial activity, bacteria and fungi, Moringa stenopetala seed, extract.&nbsp

An overview of bamboo cultivation in Southern Italy

This study examines the development of bamboo cultivation in Europe and especially in Italy. An economic and environmental analysis of two case studies located in Calabria was undertaken, looking at the multiple products that can be obtained from bamboo, notably the production of shoots and carbon sequestration. The results suggest that bamboo cultivation is well-adapted to the Mediterranean climate and has considerable ecological and economic potential. • First study on the economic and environmental aspects of bamboo cultivation in Italy • Multiple uses of bamboo: production of culms, sprouts and CO 2 storage • For Italian farmers, bamboo cultivation can represent an opportunity to diversify production and consequently income.

Tackling market opportunities for the biomass production in Romania

Abstract The European Green Deal sets out a detailed vision for Europe to become a climate-neutral continent by 2050 by providing clean, secure, and affordable energy. Thus, with the aim of providing a market-oriented perspective on the economic potential of biomass-related activities, several data were analyzed in this research paper. The positive impact of the green transition is necessary to be studied both at macroeconomic and microeconomic levels. In this context, the research question addressed was: What is the impact of the green transition on farms’ performance and national economy? A descriptive statistical analysis was carried out in order to prove the importance of specific crops, taking into consideration the movements in the energy market and the farmer’s constraints in the era of the European Green Deal. The main objective of this research was to determine if biomass is one of the optimal solutions able to gather all these European desiderates. This conference paper identifies the best scenario for an agricultural farm using diversification activities and the macroeconomic impact of the biomass crops. Currently, the European context is the most favorable for resorting to biomass crops, especially if considering the recent global energy market dynamics. Additionally, there is a need for activities diversification at the farm level in order for them to become greener and to boost their socio-economic and environmental performance. Results confirm that there is considerable economic potential for biomass production in Romania. The added value of the paper is provided by both microeconomic and macroeconomic approaches.

Understanding the Limiting Climatic Factors on the Suitable Habitat of Chinese Alfalfa

Chinese alfalfa (Medicago sativa) is one of the most widely planted species in China. It has considerable economic potential and plays an important role in soil and water conservation. In order to conduct scientific cultivation of Chinese alfalfa, we collected 100 occurrence records from herbarium and publications and 19 climatic variables from BIOCLIM to simulate potential suitable habitat and identified the key climatic factors of Chinese alfalfa by MaxEnt and GIS software. The result shows that the MaxEnt model performed well, with an average test AUC value of 0.86 with 10-fold cross validation. The potential distribution of Chinese alfalfa is mainly in arid and semi-arid areas of north and northwest China, about 15.2% (1.46 million km2) of China’s total land area, and the highly suitable area is Loess Hilly region and Xinjiang. The main climatic factors affecting the distribution of this species is hydrological-related factors (PDM, PS, AP, PDQ and PCQ), which explained 58.6% of the variation, and the climatic factors limiting the southern, northern, northwestern and Tibetan plateau boundaries were PDM, AMT, AP and MTCM, respectively. The climatic thresholds of the core area of Chinese alfalfa are 0.0–14.0 mm of PDM, 23.8–108.2% of PS, 3.9–15.5 °C of AMT, 14.0–664.0 mm of AP, 1.0–47.0 mm of PDQ, 2.0–51.0 mm of PCQ. The results improve our understanding of limiting climatic factors for Chinese alfalfa and suggest a priority management measures for areas with corresponding limiting climatic factor.

The Repercussions of the Donbass Crisis On Foreign Investment in Lugansk, Ukraine

Luhansk region is one of the biggest industrial regions in Ukraine and has considerable economic potential, which attracts attention of foreign enterprises. Foreign economic activity of the region is realized both at the level of the region and at the level of individual enterprises. This work aims to shed light on the Donbas crisis and the reasons behind the recent disquieting developments. The research divided the beginning of the concept of the economic crisis and the repercussions of the Donbas, specifically the city of Luhansk, eastern Ukraine, before and after the crisis.

YE. CHIKALENKO IN THE ETHNO-POLITICAL SPACE OF KYIV

The article studies urban tourism as a sociocultural practice endowed with considerable professional, heuristic, economic and social potential for the development of a modern city. It is highlighted the role of modern creative innovations in urban development and the need for their correlation with a historical tradition of every urban space. The author regards urban tourism as a basic post-industrial socio-economic resource focused on fulfilling the cultural- heuristic potential of every tourist and citizen. It is differentiated between urban tourism as a modern cultural practice on the one hand and traditional cultural-educational tourism on the other. The research proves that the progress of the infrastructure of urban tourism is mainly driven by heightened popular interest in the use of cultural goods. It is covered the strategic importance of the progress of urban tourism as a component of modern effective urban management and the intensification of international economic relations.

Implementing and financing sustainable rural development in the Republic of Bashkortostan, by the example of the Ufa district

A key aspect of rural development is its considerable natural, demographic, economic, historical and cultural potential. Its reasonable, effective and efficient fulfillment can provide diversification, full employment, and high living standards in rural settlements. Rural development is a long-term action plan, it is a strategy for the socio-economic development of rural areas. The Strategy of socio-economic development of rural territories is a document defining the priorities, goals and objectives of socio-economic development of rural territories for the long term, corresponding to the priorities, goals and objectives of socio-economic development of rural territories of the Russian Federation and the Republic of Bashkortostan. The given paper discusses the strategy of sustainable rural development in the Republic of Bashkortostan. The work highlights factors hindering the program implementation. These include a manpower shortage, insufficient funding, weak infrastructure and others. There is a brief overview of the current state of the agro-industrial complex in the Republic of Bashkortostan. The study suggests a draft financial support for the municipal program of integrated development by the example of the Ufa district. The authors consider the cause-and-effect relationship between the amount of financing and the pace of rural development.

Adaptive Remanufacturing – Decision Model for the Intelligent Maintenance of Production Resources

The life cycle extension of capital goods holds considerable ecological and economic potential in terms of improved resource efficiency in view of increasing resource scarcity and rising environmental awareness. The innovative approach of Adaptive Remanufacturing (AdR) allows to raise these potentials. The objective of this article is the detailed introduction of the structure and functioning of the AdR decision model. AdR describes a proactive, intelligent maintenance strategy based on structured decisions about the optimal time and scope of maintenance and remanufacturing measures. The basis of assessment are the remanufacturing-relevant components of a capital good. To protect these components from critical wear and tear, component conditions are monitored, and sensor measurement data are transferred into the decision model as dynamic input. Based on condition monitoring and defined threshold values per sensor, critical states of the monitored components are predicted. These forecasts trigger the decision process to identify and suggest suitable measures and the optimal point in time for their application based on a catalogue of measures, which serves as static input for the decision model. From this catalogue, feasible measures are preselected according to their technical suitability for specific components and wear mechanisms. To determine the optimal measure for a given component and wear, measures are assessed in terms of benefits regarding the state of a component as well as economic and ecological efforts. The decision model is implemented in a web-based software application. As a main result, it provides key figures regarding short- and long-term expenses, the CO2 consumption, and the effective duration per measure. Moreover, a prioritised measure recommendation is issued. The AdR decision model thus enables the substantiated selection of the optimal maintenance or remanufacturing measure per component.

GONADOSOMATIC INDEX OF NANDUS NANDUS (HAMILTON, 1822)

Ornamental fishes have emerged as a resource with considerable economic potential. The Asian region stands up as the largest importer of tropical ornamental fish trade. In 2007, it exported 56% of the total global share. Singapore exports the largest share occupying 38% followed by Malaysia, Japan and Thailand by 14%, 12% and 8% respectively ( FishStat, 2009). Compared to the Asian scenario India's total share is negligible in the ornamental fish trade. India is endowed with rich resource of ornamental fish species and can become a major contributor to the international market. Northeastern region can also contribute a major share in the trade of India with its diversified water bodies. The major area which needs to be focused is breeding of ornamental fishes. A successful breeding programme can be possible only if the breeding season of the fish is known. In order to complete the task, the present study was undertaken to trace accurately the spawning period of Nandus nandus. This is reported in terms of gonadosomatic index, which express the relative change in gonad weight to the percentage of body weight.

Mineralogy and chemistry of a new halloysite deposit from the Rio de Janeiro pegmatite province, south-eastern Brazil

AbstractHalloysite is a 1:1 dioctahedral clay mineral that has been studied widely for applications in nanotechnology and as a mineral exploration guide for recognizing regolith-hosted heavy rare earth element (HREE) deposits. In Brazil, pegmatites from the state of Rio de Janeiro have been catalogued, but their potential to host halloysite deposits has never been studied. After a mineral exploration programme, one pegmatite with considerable halloysite contents and economic potential was discovered. This study reports the mineralogical and chemical characterization of the halloysite of this pegmatite and evaluates the possibility of clay-adsorbedHREEdeposits, like that in the Zudong (China) regolith-hostedHREEdeposit. Seven samples were collected in horizontal channels. Bulk samples and clay fractions (&lt;2 μm) were analysed by quantitative mineral analysis (X-ray diffraction/Rietveld method), chemical analysis (major elements by X-ray fluorescence and Y, U, Th and rare earth elements by inductively coupled plasma mass spectrometry), scanning electron microscopy, Fourier-transform infrared spectroscopy, particle-size analysis, nitrogen physisorption and cation-exchange capacity. Mixed polygonal/cylindrical halloysite-7Å in concentrations between 6.3 and 35.4 wt.% in bulk samples and between 58.0 and 89.8 wt.% in the clay fractions were identified in the pegmatite. The clay fractions presented an average chemical composition of 45.46 wt.% SiO2, 36.10 wt.% Al2O3, 14.62 wt.% loss on ignition and 1.04 wt.% Fe2O3, as well as technological properties close to those observed in world-class halloysite deposits such as Dragon Mine (USA) and Matauri Bay (New Zealand). The clay minerals did not present significantHREEcontents.

The complete chloroplast genome of Keteleeria davidiana var. calcarea (Pinaceae), an endangered species endemic to China

Keteleeria davidiana var. calcarea is an endangered tree with considerable economic potential that used as timber wood for furniture and house construction. However, the natural population of K. davidiana var. calcarea is very fragmented, which is the cause for its low genetic diversity. In this study, we report the complete chloroplast genome of K. davidiana var. calcarea using Illumina sequencing. The chloroplast genome size is 117,670 bp in length, harboring a pair of very short inverted repeats (IRs) of 262 bp separated by a large single copy (LSC) sequence of 64,634 bp and a small single copy (SSC) sequence of 53,078 bp. The chloroplast genome K. davidiana var. calcarea contains 113 genes (74 protein genes, 35 tRNA genes, and 4 rRNA genes) and the overall GC content is 38.6%. The maximum likelihood phylogenetic analysis shows that K. davidiana var. calcarea is clustered with K. davidiana in genus Keteleeria. This complete chloroplast genome will help us to understand the evolution of K. davidiana var. calcarea and lays the foundations for future studies in this species conservation.

Economic and environmental impacts of sand mining activities at sadang river Pinrang Regency, South Sulawesi

Sand is a material needed for various purposes such as construction materials and backfill materials so that the need for sand continues to increase. The economic potential in the form of generating income for both workers and companies has triggered increased sand mining activities in the Sadang River in Pinrang Regency. The research took place between September and November 2019 which aimed to determine the economic potential and encironmental impact of the Sadang River sand mining in Pinrang Regency. The research area covers three districts included in the Sadang River sand mining area of Pinrang Regency namely Patampanua, Duampanua and Cempa Districts. A field survey was conducted to find out the amount of production volume, production costs, mining and transportation activities. The results showed that the Sadang River sand mining has considerable economic potential. In addition to direct economic benefits, it also provides indirect economic benefits for the community around the mining area. If the river sand mining has been deemed damaging to the environment and disrupting the function of the river, then the activities at Sadang River shows the opposite, namely that the Sadang River sand mining can help restore the hydrological function of the Sadang River to prevent siltation of the Sadang River due to sedimentation so as not to cause overflow and floods that can damage residents’ settlements and agricultural land in three districts.

Trends in social vulnerability to storm surges in Shenzhen, China

Abstract. An evaluation of social vulnerability to storm surges is important for any coastal city to provide marine disaster preparedness and mitigation procedures and to formulate post-disaster emergency plans for coastal communities. This study establishes an integrated evaluation system of social vulnerability by blending a variety of single-evaluation methods, which are subsequently combined by weighting in order to calculate a common social vulnerability index. Shenzhen has a current reputation of having considerable economic development potential and is a representative city in China. It is chosen for an evaluation of its social vulnerability to storm surges via a historical social and economic statistical dataset spanning the period 1986–2016. Exposure and sensitivity increased slowly with some fluctuation, leading to some alterations of the social vulnerability trend. Social vulnerability stayed almost constant during 1986–1991 and 1993–2004, while it decreased sharply afterwards to form a “stair-type” declining curve over the past 31 years. Resilience is progressively increasing by virtue of a continuous increase in medical services supply, fixed asset investments, and salary levels of employees. These determinants contribute to the overall downward trend of social vulnerability for Shenzhen.

Оцінка процесів модернізації на підприємствах деревообробної промисловості

An urgent requirement of the time is to carry out modernization in all sectors of the national economy, aimed at extensive and intensive expansion of production, its innovative development and greening. The wood processing industry of Ukraine, having considerable economic potential, faces problems due to low technical and technological level of development. In order to assess the state and quality of the process of modernization of woodworking enterprises, its components are distinguished: extensive, intensive, innovative and environmental. To evaluate the extent of modernization, the following indicators were selected and investigated for the years 2014–2018: number of employees, value of current assets, residual value of fixed assets, production volumes, profit. It is substantiated that modernization has an intensive component if the growth rate of the number of employees is greater than one, the rate of growth of the value of current assets is greater than the rate of growth of the working capital, the rate of increase of the residual value of fixed assets is greater than the rate of growth of the current assets. the residual value of fixed assets, and the growth rate of profit is greater than the growth rate of production. The use of the Spearman coefficient showed that during 2015–2016, the process of modernization of woodworking enterprises in the growth of attracted resources and production volumes was ineffective due to losses. In 2017, the modernization processes are estimated to be effective but mostly extensive, in 2018 the indicators selected have a standard dynamic - the modernization is intensive. The evaluation of the modernization innovativeness was carried out on the basis of the research of indicators of innovation activity of the enterprises of the industry for 2014-2018. The calculated integral indices showed the reduction of innovation activity in 2015 and 2017, and its expansion in 2016 and 2018. The presence of environmental component of modernization confirms a significant increase in capital Enterprises of the Environmental Protection Industry in 2018 The proposed techniques for assessing the components of modernization can be used both at the industry level and at the vni individual companies.