bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on physico-chemical features of water in Tarahara Fish Farm, Sunsari, Nepal
Authors: Thapa Ganesh Bahadur , Pal Joydeb
Published: December 2021

Tarahara Fish Farm includes 37 large ponds as a fish super zone. Physicochemical parameters viz., air and water temperature, pH, DO, BOD, CO2, Cl-, TA and TH of these ponds were studied for two years (Nov. 2008 to Oct. 2010). The air temperature had positive and significant correlation with water temperature (r=0.893, P<0.01) but inverse and significant correlation with DO (r = - 0.669 P<0.05) and TH (r = - 0.673, P<0.05). Both air and water temperature showed a decreasing trend during the winter months of November to January and again September to October in both years. Similarly, positive and significant correlation showed by pH with DO (r =0.660, P<0.05) and BOD (r =0.846, P<0.05); by free CO2 with DO (r=0.854, P<0.01), chloride (r=0.648, P<0.05) and TA (r=0.616, P<0.05); by DO with TA (r =0.715, P<0.01) and chloride (r =0.625, P<0.05) and by TH with TA (r= 0.592, P<0.05) but inverse and significant correlation showed by pH with water temperature (r =-0.671, P<0.05); by free CO2 with BOD (r=-0.627, P<0.05) and by DO with BOD (r = -0.810, P <0.01). The water quality parameters were within suitable range for the fish growth and breeding with small fluctuations in different months during the first and second years. Physico-chemical parameters significantly (P<0.01; 0.05) differed between different months. However, no mass mortality of fish was recorded from this site. So, the area selected as fish super zone is fruitful to meet the expected production level of fishes and fish seeds in peripheral areas.
Ethnobotany of Tharu community of Pakali, Sunsari, Nepal
Authors: Chaudhary Shravan Kumar , Rai Shiva Kumar
Published: December 2021

Ethnobotany of Tharu community of Pakali, Sunsari has been studied. The study identified a total 119 plants under 92 genera and 52 families using by them for different purposes such as traditional medicinal practices (92.4% plants), cultural and religious ceremonies (27.7% plants), edible (37.8% plants), fodder (17.6% plants) etc. The community is using large number of plants for the treatment of more than 60 human diseases. Maximum plants (17.74) are used for stomach problem and then expelling worm, skin disease, diarrhea, dysentery and cough, rheumatism, fever and eye problems. There are few but important plants which are effective in abortion, gonorrhea, dyspepsia, appetizer, eczema, tumour, head ache, chest pain, cancer, kidney problem, cholera etc. It has been clear that the Tharu of Pakali have a good knowledge of medicinal plants and their uses.
Physico-chemical properties of water and soil of Bhimsen Pokhari Wetland, Jhapa District, Eastern Nepal
Authors: Bhattarai Krishna Prasad , Shrestha Prem Kumar , Koirala Omkanta
Published: December 2021

The functioning of an aquatic ecosystem and its stability support life forms, depend to a great extent on the physico-chemical characteristics of its water and soil. Physico- chemical properties of water and soil were determined in Bhimsen Pokhari wetland of Jhapa districts, eastern Nepal. Soil samples were collected from six sampling sites and analyzed triplicate for each samples. In all sampling site had sandy loam type of soil texture. The proportion of sand showed a marked increase from middle part to corner but clay decrease from middle to corner of the wetland. The acidic nature of soil increased from corner to middle part of the wetland. Soil organic carbon of wetland was higher in the middle part (2.31%) and lower in the North-west corner (1.72%). The result of water analysis showed that the middle part of wetland was slightly acidic than other sampling sites. From the same sampling sites the dissolved oxygen (5.81 mg L-1), total hardness of water (36 ppm) were found higher than other sampling sites. Dissolved oxygen was negatively correlated with the water temperature and pH but positive correlation with the total hardness of water. In conclusion, the middle part of the wetland may be the suitable site for the growth and development of aquatic flora and fauna as well as microbial activities due to having the higher amount of dissolved oxygen and soil organic matter.
Flora of Rambha Rural Municipality, Palpa, Nepal
Authors: Regmi Sushma , Koirala Umesh
Published: December 2021

The floristic study was conducted in Rambha Rural Municipality 1 Hungi, Palpa, Nepal to explore and document flowering plants. In this study, altogether 92 plant species were identified under 84 genera and 43 families. The study area was dominated by Lamiaceae (11 sps) followed by Leguminosae (10 sps), Euphorbiaceae (6 sps) and Anacardiaceae and Poaceae (5 sps each).
Flowering plants of Sarkuwa VDC, Baglung, Western Nepal
Authors: Bhagat Indramani , Subedi Bimala
Published: December 2021

The study was conducted in Sarkuwa VDC of Baglung district, Western Nepal to explore and document the flowering plants. Altogether 127 species of plants belonging to108 genera and 53 families were collected. Dominant families of the study area are Moraceae with 11 species, Asteraceae with 9 species, Fabaceae and Euphorbiaceae with 8 species, Lamiaceae and Verbenaceae with 5 species and Anacardiceae, Meliaceae, Poaceae with 4 species. Among the 127 species, trees are dominant in species composition attaining 39.37 of the whole floristic value, shrub with 27.55%, herb with 25.19%, and climber with 5.15%, under shrub with 1.57% and finally parasite by attaining 0.78%.
Water quality and biological diversity of Budhoholi Wetland, Jhapa, East Nepal
Authors: Bhattarai Bhanu Kumar , Dahal Diwas
Published: December 2021

The present study deals with the physico-chemical parameters and biological diversity of Budhoholi at Sani-Arjun Municipality -7 Jhapa, from July to October, 2015. The physico-chemical properties of water were within the maximum permissible limit with slight variation in some parameters. The biological diversity was found to be rich. Riparian vegetation consisted of 21 herbs 13 shrubs, 11 trees and 4 climbers, 9 aquatic macrophytes and 21 species of fishes. The overall result of the lake indicated that the lake is not disturbed and is not polluted.
Anthropogenic impacts on Keshalia River, Eastern Nepal
Authors: Shrestha Jay Narayan
Published: December 2021

The anthropogenic impact on Keshalia river, especially on fish diversity, is very high. Over fishing with unconventional fishing methods, disposal of domestic and industrial effluents, excess use of pesticides, dumping sites of municipalities, dam construction without fish ladder across the river and mining of sands and gravels are major anthropogenic impacts on the river.
Vertebrate-faunal diversity profile of Sisauli Wetland, Belbari, Morang
Authors: Adhikari Ramchandra , Thapa Chhetry Damodar
Published: December 2021

The research work on Sisauli Wetland area of Belbari Municipality, Morang was conducted from first week of April to last week of August, 2018. A total of 12 species of mammals, 19 species of Aves, 13 species of reptiles, 8 species of amphibian and 19 species of Pisces were documented from Sisauli Wetland area.
First record of Curvella sikkimensis (Reeve, 1850) (Pulmonata: Subulidae: Subulininae) from Nepal and its reproductive organs
Authors: Budha Prem Bahadur
Published: December 2021

The genus Curvella contains about 50 described species from the tropical world. Out of them four species are known from north eastern India. The original descriptions of all known species are based on the shell characters only. The reproductive anatomy of any species of the genus is still unknown. This is the first evidence on the reproductive anatomy on Curvella sikkimensis from Nepal.
Effect of barrier related factors on perceived usefulness and ease of use of social media applications in the Australian healthcare sector
Authors: Khan Irfanuzzaman , Loh Jennifer , Saleh Abu , Quazi Ali , Talukder Majharul
Published: December 2021

Despite the growing popularity of social media internationally, an extant review of the literature revealed a low rate of social media usage among healthcare professionals. While cynicism amongst healthcare professionals might be a reason, there might be other factors that could explain healthcare professionals’ reluctance to use social media in their practices. This research investigated potential barriers that affected healthcare professionals’ behavioural intention to use social media. A cross-sectional survey was randomly administered to 824 healthcare professionals working in Australian healthcare organisations. At the end of data collection, 219 usable responses were collected. Analysis of data via structural equation model (SEM) found that perceived trust, privacy threats, professional boundary, facilitating conditions and self-efficacy significantly influence the notion of perceived usefulness and ease of use. In addition, information quality directly influences health professionals’ perceived ease of utilising social media technology. The result also indicated that gender moderates the relationship between barrier-related factors and perceived usefulness and ease of use. This study’s findings have important implications for healthcare providers and policymakers regarding medical professionals’ perceptions of the potential challenges in using social media as well as developing strategies to counter misinformation against the backdrop of COVID-19.
Towards a Cashless Society: The Effects of Perceived Convenience and Security on Gamified Mobile Payment Platform Adoption
Authors: Lai P. C. , Liew Ewilly J.Y.
Published: December 2021

Integrating gamification into mobile payment platform incentivizes people to use digital alternatives for payment and could spur user-centric, platform-mediated interactions. This study examines the relationship between perceived convenience and perceived security on individual users’ intention to use a gamified mobile payment platform in Malaysia; a developing country envisioned to build a cashless society. The partial least square structural equation modeling (PLS-SEM) technique is employed on a final sample of 388 online users. The results show that perceived convenience has a strong but indirect effect on the intention to use. Perceived security has a strong and direct effect on intention to use and mediates the relationship between perceived convenience and intention to use. Furthermore, the reliability aspect of security is a top priority concern for users interested in using mobile payment. The multi-functional aspect of convenience is a top priority concern to attract users who are not interested in using mobile payment at first. The study discusses theoretical and practical implications for developing a dual strategy of ‘ensuring convenience’ and ‘assuring security’ to encourage the gamified mobile payment platform adoption in developing countries.
Understanding the Perception of Information System Niche: Conceptualization, Measurement, and Validation
Authors: Darban Mehdi
Published: December 2021

The number of niche technologies is growing, and they are getting noticed. However, the usage dynamics of such systems have not been explored. This study introduces the “niche” information systems (IS) construct to differentiate between mainstream and niche technologies and to illustrate how such differences potentially influence a person’s IS usage behavior. We posit that niche-ness is perceptual, and a measurement to gauge an individual’s niche perception in the domain of systems usage is desired. Resting on Optimal Distinctiveness theory, the study develops a novel conceptualization and operationalization of niche technology perceptions, focusing on social networking systems. Our main contribution includes the examination of the typology of the perceived niche, which results in the development and validation of an eight-item instrument for perceived technology niche through three studies. In addition, by placing the construct in a nomological network in a fourth study, we demonstrate that the perceived technology niche construct is related to IS continuance intention.
Trust Types and Mediating Effect of Consumer Trust in m-payment Adoption: An empirical Examination of Vietnamese Consumers
Authors: Nguyen Tuan Anh , Cong Pham Hiep , Dick Martin , Richardson Joan
Published: December 2021

This study employs a quantitative method to investigate different types of trust in m-payment adoption. It aims to overcome the limitation of previous studies which are lack of differentiating trust types and investigating any mediating effect to m-payment adoption. Data of the study was collected in Vietnam, one of fastest growing m-payment usage markets globally in 2019. The research found significant and positive impacts of m-payment provider trust, institution-based trust, and seller trust on the overall consumer trust, which then fully mediates the relationships of three trust types and m-payment adoption. The study also revealed that technology trust is embedded in m-payment provider trust, suggesting that the m-payment provider is considered fully responsible for ensuring technology protection from the perspective of the m-payment consumers. The results enable researchers to better understand trust characteristics in m-payment adoption as well as technology adoption in general. In addition, the findings are beneficial to practitioners such as policy makers, consultants, and m-payment service providers to improve different elements of consumer trust, leading to higher m-payment adoption.
Health Seekers’ Acceptance and Adoption Determinants of Telemedicine in Emerging Economies
Authors: Zobair Khondker Mohammad , Sanzogni Louis , Houghton Luke , Sandhu Kuldeep , Islam Md Jahirul
Published: December 2021

This study investigates health seekers’ acceptance and adoption determinants of telemedicine services in a rural public hospital setting in an emerging economy using an adapted, extended Technology Acceptance Model. The present study pursued synthesising a plethora of existing literature and contextualised the significance of seven broad categories of potential determinants that significantly affect patients’ acceptance and adoption intentions: perceived usefulness, perceived ease of use, self-efficacy, service quality, privacy and data security, social influence, and facilitating conditions. The partial least square structural equation modeling technique was employed to test the conceptual model and research hypotheses. A cross-sectional survey was administered among 500 telemedicine users in randomly selected rural and remote areas of Bangladesh. Excluding self-efficacy and ease of use, five determinants expressively contributed to patients’ acceptance of telemedicine adoption, explaining 65% of the variance (R2) in behavioural Intention. The empirical findings have the quality of rigour obtained from rich data sets in health informatics and can contribute to build telemedicine into an institutionalised health infrastructure in Bangladesh and similar settings. Pertinent implications, limitations and future research directions were recommended to secure the long-term sustainability of telemedicine healthcare projects.
E-governance using mobile applications: A case study of India during the COVID-19 pandemic
Authors: Goyal Sandeep , Pillai Anandan , Chauhan Sumedha
Published: December 2021

Healthcare initiatives backed by electronic-governance (e-governance) principles have contributed well to the extant literature and practice. Governments and healthcare systems across the world were taken aback by the swamping impact of the COVID-19 pandemic. However, they reacted quickly by developing contact-tracing mobile applications (apps) for creating awareness, providing information about various healthcare initiatives, and helping citizens to use the required information in case of emergency. The major challenge was to develop such e-governance interventions in a short time and ensure their quick adoption among the masses. Hence, it is worthwhile to investigate the factors leading to the adoption of such e-governance initiatives, especially in the context of a widespread pandemic situation. The present study is an attempt to analyze the factors driving the intention to use contact tracing mobile apps launched by governments globally during the COVID-19 pandemic. We have conducted the study in the context of India, where the government launched a community-driven contact tracing mobile app for its citizens during the COVID-19 pandemic in April 2020. The study adopted an empirical approach to test how epistemic value, convenience value, conditional value, functional value, and privacy concerns influenced the intention to use this approach. The study found that intention to use such an app was positively influenced by functional value, which in turn was positively influenced by convenience and conditional values. It suggests that the convenience of using the app, perceived seriousness of the pandemic (i.e., conditional value), and utilitarian benefits (i.e., functional value) of the contact-tracing mobile app enhanced its acceptance. However, its novelty (i.e., epistemic value) and privacy concerns are not significant predictors of intention to use. The study recommends that the government should place more emphasis on improving the functional value which is driven by convenience and context-specific features to push the use of an e-governance initiative during the crisis.
Isolation of Alkaloids from Papaver rhoeas (Papaveraceae) Wildly Grown in Iraq
Authors: Ayad Lafta Amenah , N. Hamad Maha
Published: December 2021

The plant Papaver rhoeas ,which belongs to family Papaveraceae and known as common poppy is wildly grown in Iraq .It was used in traditional medicine in wide range of diseases including inflammation, diarrhea, sleep disorders, treatment of cough, analgesia, and also to reduce the withdrawal signs of opioid addiction.

The project provide the first comprehensive research done in Iraq to study the phytochemical and the methods of extraction and separation of alkaloids from Papaver rhoeas wildly grown in Iraq .The plant was harvested in April 2019 from Zurbatiya is an Iraqi town located at the northeast of Waist province in Iraq.The collected plant was washed thoroughly, dries under shade, and grounding in a mechanical grinder to fine powder. The plant was extracted by hot extraction method using Methanol then fractionation was done to separate alkaloids from chloroform Fraction by TLC and PTLC .The alkaloids were isolated and purified by PTLC then subjected to various analytical techniques for alkaloids identification such as UV, LC mass and IR .The result was indicated of three alkaloids (dihydrocodien, chelidonine and papaverrubine C) in Papaver rhoeas plant.
A MODEL OF THE EVOLUTION OF THE LITHOSPHERE OF THE HIMALAYAN-TIBETAN OROGEN
Authors:   Sсhmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Alekseev, R.S. , Rebetsky Yu.L. ,   Sсhmidt Institute of Physics of the Earth of the Russian Academy of Sciences
Published: December 2021

The Himalayan-Tibetan orogen is one of the active orogens on Earth. The processes caused by the collision of two continents have attracted attention of many researchers, and over the past decades, a large amount of geological and geophysical data has accumulated, on which models of the evolution of the region are based. The paper presents a model of the evolution of the Tibet plateau and the adjacent mountain chains, which complies with the modern concepts of the structure of the crust. The reference parameters of this model are the data on the values of stresses and on the patterns of the spatial distribution of principal stresses obtained in our own tectonophysical studies in region, as well as in other intracontinental orogens and in subduction zones between lithospheric plates. The basic assumptions of the model are the factors of the long stage of the Indian plate underthrusting beneath the Eurasian continent, metamorphic processes in the submerged slab (oceanic lithosphere) and in the continental lithosphere above it, combination of absolute horizontal movements of the Eurasian and Indian plates, small-scale convection in the upper mantle and vertical movements of matter, both in the continental lithosphere itself and in the upper mantle.
الرمزية الدينية للمسجد الأقصى ودوره في تحفيز المسلمين على تحرير بيت المقدس من الصليبيين عام 583هـ/1187م
Authors: KADDRU Nergis Esad
Published: December 2021

يحتل بيت المقدس مركزاً متميزاً عند المسلمين وأهل الكتاب؛ فهو مكان استقرار للكثير من الأنبياء، أو عبور للكثيرين منهم، كما أنه حظي باهتمام كبير من قبل المسلمين فهو معراج النبي ﷺ إلى السماء، إضافة إلى وجود المسجد الأقصى بما فيه من الجامع الأقصى وقبة الصخرة وغيرهما من الآثار الإسلامية. ونظراً لما حملته هذه المدينة من تلك الدلالات الرمزية العميقة، فقد تعرضت لتهديدات كثيرة عبر مراحل تاريخها، مما دفع بالمسلمين للدفاع عن مقدساتها التي تخص جميع الحضارات، وخاصة بعد تعرضها لهجمات الصليبيين الذين دنسوها، وعملوا على تغيير ملامحها، دون احترام قدسيتها لدى جميع الديانات. تأتي أهمية هذه الدراسة من كونها ستلقي الضوء على هذه الأماكن المقدسة، وكيف تعامل المسلمون مع أصحاب الديانات المختلفة، وحفظوا لهم آثارهم المقدسة واحترموها، ثم المقارنة ما بينهم وبين الصليبيين، الذي اغتصبوا الأرض ولم يحترموا مقدسات هذه المدينة التي كانت مميزة لدى جميع الأديان، وفي نهاية البحث تم مناقشة كيف نجح المسلمون بقيادة صلاح الدين بتحرير هذه الأرض.
Analysis of CSR effort affect on company results and employee awareness
Authors: Harmsone Annija
Published: December 2021

Introduction. The article explores several factors of corporate social responsibility (CSR) influencing various aspects of a company, including profitability, efficiency and employee attitude and wellbeing, further focusing on employee CSR awareness.  Approximately
Aim and tasks. The aim of the article is to determine how companies CSR efforts are affecting the company results and employee awareness, with discussion of latest available researches from 2020 and to date, including an analysis of employee awareness in a selected company in Latvia during 2020. A quantitative method is used in this study, using a questionnaire for analysis of Atea Global Services Ltd employee CSR awareness, conducted by the companies CSR Ambassadors team. Data was collected from the internal survey conducted among employees of the Atea Group company in Latvia, with the total of 108 company employed participants out of 465 existing employees. The main tasks of the article are 1) to indicate and discuss possible outcomes of companies CSR efforts and employee awareness based on existing recent researches; 2) to understand whether employees were aware of the existing “CSR Ambassadors” initiative in Atea Global Services Ltd. (AGS) based on the conducted survey; 3) to determine the employee level of knowledge of the general CSR concept and company’s CSR initiatives based on their self-evaluation.
Results. The article provides several theoretical aspects of CSR effort outcomes, including increased profitability, customer satisfaction, employee retention and an overall positive company image. Findings show that the employees of Atea Global Services are largely aware of the CSR Ambassadors initiative, but show a lack of understanding of the performed activities due to moderate level of internal communication on the subject.
Conclusions. The theoretical research indicate several positive aspects for companies to support their CSR efforts as well as some possible implications. Theoretical research results may be applied to understand CSR efforts in various industries, however, the practical example of employee awareness research is limited to a single company in the information technology industry and requires further research for wider application.
Agribusiness development trends in Georgia: modern challenges and solutions
Authors: Kharaishvili Eter , Suknishvili Mirza
Published: December 2021

Introduction. The article substantiates the importance of agribusiness development in solving the problem of food security and food security of the population. Economic indicators of agribusiness development in Georgia and Adjara region are analized, the role of determining agribusiness development trends and perspective directions in strengthening the rural community, especially in terms of rural community involvement in business is assessed. Therefore, in order to overcome the problem of agribusiness development, it is of special importance to study the development trends of agribusiness, to identify the current challenges in this field and to develop perspective directions of development.
Aim and tasks. The aim of the research is to identify modern challenges based on the study of agribusiness development trends and to make recommendations on promising development directions.
Results. The paper analyzes the views of researchers on alternative models of development in the field of agribusiness, focusing on the components of the agribusiness sector as a model. The article presents the conclusions and develops recommendations on overcoming the factors hindering the development of agribusiness and ways of future development. The development of the cooperation process is also important for the growth of scale and its place in international markets. Quantitative research has shown that 86% of farmers are not united in cooperatives. Even those who are united from year to year with less turnover of financial and material resources are recorded in the respective organizations, indicating their less life skills.
Conclusions. Quantitative and qualitative research on the example of Adjara region (Georgia) has been conducted to identify the trends and characteristics of agribusiness development and to determine future directions. A questionnaire has been developed for the quantitative research and beneficiaries have been selected from the database of employees in the field of agribusiness, while for the qualitative research a group of experts has been identified and focus groups have been formed from these groups to clarify some problems. Quantitative research has identified the current challenges of agribusiness development, while qualitative research has identified the specific causes of the problems and the characteristics that will determine the future priorities of agribusiness development in the Adjara region.
Digital challenges in the economy and their impact on regional development
Authors: Nowak Dariusz , Dolinskyi Leonid , Filipishyna Kristina
Published: December 2021

Introduction. Digital transformations that have occurred in socio-economic development of entire society have been proven, so that direct consumers of digital products and services are population gaining access to the Internet, certain applications, programs and databases that help to improve the quality of life, make it more comfortable in conditions of turbulent development and quarantine restrictions caused by the COVID-19 pandemic. Development of digital opportunities has emphasized importance of supporting this area from regulatory and legislative framework, in particular its improvement and regulation, which will be reflected in improving population’s well-being and regional development.
Aim and tasks. The aim of the article is devoted to consideration of theoretical and practical foundations of ongoing changes in the economy of territorial economic systems under the influence of rapid spread of innovative technologies, in particular digital transformations and digital challenges, their impact on regional development.
Results. In the given article we have considered approaches and individual directions concerning certain changes in socio-economic direction of society’s development under the influence of digital transformations. The factors and indicators influencing region’s level of assessment of digital capabilities are indicated. A possible scenario for transformation of digital economy is given, taking into account forms of involvement in digitalization process contributing to the development of digital network and business, formation of new approaches to sustainable strategic development of the regional economy. The role of investment component in promoting and developing digital opportunities, which are reflected in population’s social well-being, has been proven. It has been established that the digital development of society is formed under the influence of the relationship between government and business, the use of the latest information technologies.
Conclusions. The widespread dissemination and implementation of digital opportunities is the key to sustainable development of the region, which affects the improvement of business, interaction with the authorities and the growth of the population's well-being. Expanding access to the Internet, levelling user opportunities will accelerate implementation of digital economy and achievement of positive socio-economic changes. It is digitalization of the economy and society that is the main tool for development. A systematic approach to the usage of digital technologies will act as a stimulating factor in the development of society and economy at different levels: national, regional (territorial) and local. In addition, the systematic usage of digital technologies has an impact on raising the level and improving population’s living conditions.
Recent Progress on the Production of Aluminum Oxide (Al2O3) Nanoparticles: A Review
Authors: Ziva Adzra Zahra , Suryana Yuni Kartika , Kurniadianti Yusrianti Sabrina , Nandiyanto Asep Bayu Dani , Kurniawan Tedi
Published: December 2021

This study aims at discussing several methods to produce aluminum oxide (Al2O3) synthesis methods along with the advantages and disadvantages of each method used. In general, several methods are available: (1) precipitation, (2) combustion, (3) sol-gel, (4) wet chemical, (5) synthesis in supercritical water conditions, (6) microwave, (7) mechanochemical, and (8) hydrolysis, and the most efficient method for synthesizing Al2O3 is precipitation because it is facile and the simplest method (compared to other methods), can be proceeded using inexpensive raw materials, produces less pollution, and has several advantages: high purity product, high thermal stability, nearly homogeneous nanoparticle in size, and control desired particle size. The results of the study help to provide comparisons in producing various Al2O3 synthesis methods.
Data on Emission Factors of Gaseous Emissions from Combustion of Woody Biomasses as Potential Fuels for Firing Thermal Power Plants in Nigeria
Authors: Elehinafe Francis Boluwaji , Okedere Oyetunji Babatunde , Ebong-Bassey Queen Edidiong , Sonibare Jacob Ademola
Published: December 2021

This work generated data on the emission factors of air emissions from combustion of woody biomasses collected from southwest, Nigeria. This was with a view to finding their potentials as sustainable and environmentally friendly fuels for firing thermal power plants compared to coals. The data on heating values and elemental contents (carbon, sulphur and nitrogen) responsible for gaseous emissions in the 100 woody biomasses were collected from the previous results of this work to determine the gaseous emission factors on the expected condition of complete combustion. The current results showed that the CO2 emission factors ranged from 0.0147 kg/(MJ/kg) for Ficus mucuso to 0.1499 kg/(MJ/kg) for Spondias mombin, SO2 emission factors ranged from 0.0000000 kg/(MJ/kg) for Pterygota macrocarpa, Irvingia grandifolia, and fifteen others, to 0.0011341kg/(MJ/kg) for Khaya ivorensis, while NO2 emission factors ranged from 0.0000000 kg/(MJ/kg) for Citrus medica to 0.0035824 kg/(MJ/kg) for Ficus carica. Considering the minimal emissions from biomasses compared to coal species, serious political will is needed on the part of the Nigerian government to propagate these biomasses for fuels in firing the thermal plants in the country.
A Report on Metal Forming Technology Transfer from Expert to Industry for Improving Production Efficiency
Authors: Khoirudin Khoirudin , Sukarman Sukarman , Murtalim Murtalim , Dewadi Fathan Mubina , Rahdiana Nana , Rais Amin , Abdulah Amri , Anwar Choirul , Abbas Aries
Published: December 2021

This article reports on technological mastery assistance in three small metal forming industries in Indonesia. Problems in the blangking and piercing separately process caused increased production time which resulted in inefficiency cost. Therefore, the expert team aided in metal forming technology through participatory action research (PAR) methods and experimental methods through reverse engineering for several products. The PAR method involves optimal contribution and participation from the industry. Assistance in mastering technology in small metal-forming industries reduces the manufacturing process from seven to three stages, increasing efficiency. The press machine's tonnage capacity must balance with the force blanking/piercing requirement. The minimum press machine requirement is 6.7 tons, and based on the availability of existing press machines, the expert team recommends a 20-ton capacity press machine. Total efficiency can be further increased by implementing full progressive die technology by combining piercing, blanking, and bending processes.
Emphasis of Weld Time, Shielding Gas and Oxygen Content in Activated Fluxes on the Weldment Microstructure
Authors: Tathgir Surinder , Rathod Dinesh W , Batish Ajay
Published: December 2021

The activated-TIG (A-TIG) process is a recognised process for achieving higher depth-of- penetration (DoP) and it could be used for various stainless-steel grades welding. The oxygen content of oxide based activated fluxes provide the extra heat during decomposition of flux and result into deep penetration. This study reveals the effect of short weld time of 2 sec in stationary arc, shielding environment (Ar and Ar + 2.5 % H2) and an effect of oxygen element in activated flux (CrO3 and SiO2) on the microstructure and weld metal micro-hardness. Use of hydrogen mix shielding gas during A-TIG process has significant impact on the dilution rate, grain size and dendrite arm spacing. The fraction of oxygen in the flux and the presence of silicon in SiO2 flux play a significant role in achieving higher DoP. To evaluate the impact of different shielding environment on grain growth, the samples were investigated with weld pool morphology, depth of penetration, weld chemistry, optical microscopy and SEM analysis. The extra heat produced due to oxygen fraction in activated flux and H2 induced shielding have been quantified in the study. The ferrite and austenite grain growth as well as the dendrite arm spacing found to be increased due to presence of H2 in shielding gas.
The Effect of Excess Heat Utilization on the Production Cost of Cement
Authors: Adetunji Olayide R. , Ogbuokiri Montfort C. , Dairo Olawale U. , Olatunde Olanrewaju B. , Okediran Iliyas K.
Published: December 2021

Industrial excess heat is a largely untapped resource that has the potential for external use that would be beneficial to the cement industry. Therefore, this work studied the excess heat utilization for the optimization of production cost in a cement plant within a period of three years. The study of plant layout in the selected plant in Nigeria (Ewekoro II Cement Plant of 200 tonnes/hour) was carried out to identify areas where excess heat is generated. The temperature and static pressure of precalciner, kiln, and cyclone were taken using a temperature probe, pitot tube, digital manometer, and light-emitting diode temperature reader. These parameters were used to obtain the mass flow rate and heat transfer needed for the heat energy analysis of the system. The kiln was maintained at constant tonnage per hour through a clinker truck weighed using the weighbridge. The result showed that the heat generated from the kiln was 577,640,260 MJ/hr. through excess air draft of 780,000 m3/hr (89.4%) at 250 °C and induced draft fan of 900,000 m3/hr at 350 °C. The result showed that excess heat can be utilized in pre-heater and air quenched cooler boilers, steam turbines and auxiliaries, and generators. The total estimated heat that could be saved amounted to 344,648,250 MJ with a total annual capacity of 2.25 million tonnes of cement. A saving of over two billion dollars could be achieved in production cost per year.
The Role of Composites for Sustainable Society and Industry
Authors: Widyorini Ragil , Sari Nasmi Herlina , Setiyo Muji , Refiadi Gunawan
Published: December 2021

In the last few decades, the global community's demands are getting stronger for more environmentally friendly materials. Natural fiber reinforced composites have been applied as reinforcement in concrete, sound absorbers, buildings, aeronautical, aerospace, sanitation, electronics, bridge decks, interior, automotive, sports equipment and furniture industries, modular structures, and others. Natural fibers are receiving high attention due to their sustainability, environmental friendliness, low density, low cost, low abrasiveness, renewability, and biodegradability, as well as contributing to the consumption of CO2 gas. As reported by many researchers, Indonesia has several natural resources for natural fibers such as bark fiber, leaf fiber, seed/fruit fiber, grass fiber, stalk fiber, and wood fiber.
An investigation of methods for calculating the volume of methane dissolved in reservoir water
Authors: Fominykh O. V. , Leontiev S. A.
Published: December 2021

Existing gas production technologies limit gas recovery at the level of 85 %. Therefore, it is important to introduce technologies that make it possible to maximize the volume of production and intensify the inflow; for their selection it is important to have a reliable estimate of the residual gas reserves, since with a significant volume of the aquifer of gas fields, the volume of dissolved gas can be up to 10 % of the total reserves of the reservoir, which should be taken into account when designing the application of technologies to increase gas recovery.

The main hydrocarbon dissolving in reservoir water is methane. In this regard, it is of interest to study methods that make it possible to determine the volume of hydrocarbon gases dissolved in saline water, which will make it possible to determine the total reserves of such gas. We investigated the existing methods for calculating the amount of methane dissolved in reservoir water, and gave a quantitative assessment of the volume of gas dissolved in water.
Estimation of the value of leaks through a through defect of the pipeline when using in-pipe repair elements
Authors: Toropov E. S. , Dorofeev S. M. , Toropov S. Yu. , Sorokina E. M. , Ponomareva T. G.
Published: December 2021

The loss of hydrocarbons when using in-pipe repair elements is determined by the nature of the fluid flow in the gap between the pipe and the repair sleeve. An accurate analytical calculation of the flow parameters for a real sleeve, taking into account its length, the asymmetry of the defect and other design features, is very difficult. In this article, the problem of accurate calculation of the radial flow of a viscous incompressible fluid in a thin layer between two annular plates simulating a circular region with a center coincide with a pipeline defect is solved. The area consists of two circles formed by the pipeline wall with a through defect and the surface of the internal repair element. The results obtained will allow us for accurate calculations in the area adjacent to the defect of the pipe and approximate calculations for the whole repair element.
Predictive control of the starting pressure of the main oil pipeline
Authors: Yakupov A. U. , Cherentsov D. A. , Toropov S. Yu. , Zemenkova M. Yu. , Shabarov A. B. , Chizhevskaya E. L. , Ponomareva T. G.
Published: December 2021

The article calculates the starting pressures and the time of safe shutdown of the pipeline during the transportation of high-viscosity and high pour point oils, the rheological properties of which depend on temperature. When the oil temperature decreases, its viscosity increases and paraffins are released, forming a strong structure, for which additional stress is necessary to shift. To start a stopped oil pipeline transporting oil with such characteristics, the pressure developed by the pumps may not be enough. In this regard, it is necessary to determine the safe time of stopping the oil pipeline. The relevance increases with an increase in the share of high-viscosity and high pour point oil in the total production volume. Predictive control, based on the analysis of data on the characteristics of the transported product and forecasting the nature of their changes, is an intelligent tool for managing the efficiency of technological transport enterprises. Predictive control allows you to choose the optimal way to ensure reliable and trouble-free operation of the main equipment of hydrocarbon transport systems.

A numerical experiment was carried out for the effect of seasonal cooling devices to protect permafrost soils from thawing, at the time of a safe shutdown of the oil pipeline. The values of starting pressures have been determined. Dependence of the pressures on the duration of the safe shutdown of the pipeline has been established. It was revealed that due to the operation of seasonally operating cooling devices, the difference between the temperature soil and oil increases during cooling, and the cooling rate increases. More pressure will be required to launch such an oil pipeline.
The geosolitonic concept of high output hydrocarbon deposits formation
Authors: Bembel R. M. , Bembel S. R. , Zaboeva M. I. , Levitina E. E.
Published: December 2021

Based on the well-known results of studies of the ether-geosoliton concept of the growing Earth, the article presents the conclusions that made it possible to propose a model of thermonuclear synthesis of chemical elements that form renewable reserves of developed oil and gas fields. It was revealed that local zones of abnormally high production rates of production wells and, accordingly, large cumulative production at developed fields in Western Siberia are due to the restoration of recoverable reserves due to geosoliton degassing. Therefore, when interpreting the results of geological and geophysical studies, it is necessary to pay attention to the identified geosoliton degassing channels, since in the works of R. M. Bembel and others found that they contributed to the formation of a number of hydrocarbon deposits in Western Siberia. When interpreting the results of geological-geophysical and physicochemical studies of the fields being developed, it is recommended to study the data of the ring high-resolution seismic exploration technology in order to identify unique areas of renewable reserves, which can significantly increase the component yield of hydrocarbon deposits.
Effect of molybdenum on the structure and properties of electrodeposited alloys of iron and nickel
Authors: Kovenskiy I. M. , Koreshkova E. V. , Kulemina A. A. , Chaugarova L. Z.
Published: December 2021

The article considered electrodeposited coatings made of iron- and nickel-based alloys doped with molybdenum. The studies carried out by optical and electron microscopy, X-ray structural analysis, as well as the determination of hardness and corrosion rate of the coatings under study allowed us to determine the laws of the influence of the structure on the properties of electrodeposited alloys immediately after obtaining, as well as after thermal treatment. Corrosion tests carried out both in the media of produced water of oil fields of Western and Eastern Siberia and in standard media allowed to determine the conditions for obtaining and thermal treatment of coatings, in which the effectiveness of protection with coatings is at maximum. Due to comparison with standard media, the influence of not only the pH of the medium but also the degree of its mineralization has been established. This article may be of interest to researchers studying the structure and properties of electrodeposited coatings, as well as to specialists in the field of corrosion protection and technologists of galvanic production.
Investigation of the nature of suspended matter under the influence of the facies-genetic characteristics of bottom sediments
Authors: Katanov Yu. E. , Zubchenko I. O. , Tarasenko A. V. , Vorobjeva S. V.
Published: December 2021

The purpose of this study is to obtain a mathematical model to assess the influence of the facies and genetic characteristics of bottom sediments on the distribution of suspended matter during dredging.

The addressed problem is associated with the detrimental effect of bottom sediments during hydraulic works on the ecological state of a water body. An increase in the level of technogenic turbidity leads to redistribution of the thermal conductivity of water masses and corresponding deterioration in the habitat of aquatic organisms. The development of a mathematical model for the distribution of suspended matter is an urgent task, the solution of which will allow us to analyze the area of distribution of each of the facies of bottom sediment during dredging operations.

A mathematical model of the distribution of facies of suspended matter during dredging operations based on the finite difference method has been developed. Software for modeling and visual representation of the process of propagation of facies of suspended matter in the water space of the Gorin River during dredging operations has been developed using C# software, Visual Studio software development environment.

The scientific novelty of the performed work is a qualitative and quantitative assessment of the distribution of suspended solids during dredging operations under conditions of hydrogeological uncertainty.
Determining factors of the unconsolidated rocks of Cenomanian reservoir on the Bolshekhetskaya depression
Authors: Moskalenkо N. Yu.
Published: December 2021

The relevance of the article is associated with the importance of the object of the research. Dozens of unique and giant oil and gas fields, such as Urengoyskoye, Medvezhye, Yamburgskoye, Vyngapurovskoye, Messoyakhskoye, Nakhodkinskoye, Russkoye, have been identified within the Cenomanian complex. The main feature of Cenomanian rocks is their slow rock cementation. This leads to significant difficulties in core sampling and the following studies of it; that is the direct and most informative source of data on the composition and properties of rocks that create a geological section.

The identification of the factors, which determine the slow rock cementation of reservoir rocks, allows establishing a certain order in sampling and laboratory core studies. Consequently, reliable data on the reservoir and estimation of hydrocarbon reserves both of discovered and exploited fields and newly discovered fields that are being developed on the territory of the Gydan peninsula and the Bolshekhetskaya depression will be obtained. This study is also important for the exploration and development of hydrocarbon resources of the continental shelf in the waters of the Arctic seas of Russia as one of the most promising areas.

As a result of the analysis, it was found that the formation of rocks of the PK1-3 Cenomanian age of the Bolshekhetskaya depression happened under conditions of normal compaction of terrigenous sedimentary rocks that are located in the West Siberian basin. Slow rock cementation of reservoir rocks is associated with relatively low thermobaric conditions of their occurrence, as well as the low content of clay and absence of carbonate cements. Their lithological and petrophysical characteristics are close to the analogous Cenomanian deposits of the northern fields of Western Siberia and can be applied to other unconsolidated rocks studied areas.