bluuebunny/crossref_metadata_2025_split huggingface dataset:
Larvicidal Effects of Metabolites Extracted from Nocardia and Streptomyces Species against the Forth Larval Stage of Anopheles stephensi (Diptera: Culicidae)
Authors: Seratnahaei Marjan , Eshraghi Seyyed Saeed , Pakzad Parviz , Zahraei-Ramazani Alireza , Yaseri Mehdi 
Published: September 2023

Background: Larvicidal agents can be produced using microbial resources, which are environmentally friendly, biode­gradable, and economical. The study's goal was to evaluate the larvicidal activity of metabolites isolated from Nocardia (N. fluminea, N. soli and N. pseudobrasiliensis) and Streptomyces (S. alboflavus) bacterial species against Anopheles stephensi.
Methods: Four metabolites isolated from Nocardia and Streptomyces strains were exanimated for larvicidal activity. The experiments were performed for 24, 48, and 72 hours. 300, 350, 400, 450, 500, 550, and 600 µl of Actinobacteria metabolites were added to 100 cc of dechlorinated water. Fourth-stage larvae were placed in dechlorinated water as a control. LC50 and LC90 were calculated using toxicity data and analyzed.
Results: All metabolites had a statistically significant influence on mosquito larvae (P< 0.05). At 24, 48, and 72 hours, the LC50 for N2 (N. fluminea) was 417, 386, and 370 ppm, respectively, and the LC90 was 650, 595, and 561 ppm. Moreover, LC50 for N4 (N. soli) was 389, 376, and 347 and LC90 were 591, 565, and 533 and LC50 for N5 (N. pseudo­brasiliensis) was 390, 357, and 341 ppm and LC90 were 589, 532 ppm. In addition, LC50 for S921 (S. alboflavus) was 484, 416, and 382 ppm, and LC90 was 701, 612, and 574 ppm.
Conclusion: The four bacterial metabolites tested in our study were found to have a notable effect on the mortality rate of Anopheles stephensi larvae, indicating their potential as natural larvicides. This is an effective technique for control­ling Anopheles stephensi that has no detrimental environmental impact.
Effect of Nomophobia on Body Image Satisfaction and Aggression Among College Students
Authors: Sharma Kavita 
Published: September 2023

Nomophobia characterized as the fear of being without a mobile phone or being unable to use it has become widespread in today's technologically advanced society. Given the growing reliance on mobile, it is essential to comprehend the potential psychological effects of nomophobia. Body image satisfaction is a person's subjective assessment and perception of their own physical appearance. It includes sentiments, attitudes, and general body pleasure, including weight, shape, size, and overall attractiveness. Excessive smartphone use may result in an obsession with virtual relationships, limiting face-to-face social interactions and empathy, which can contribute to violence. This research aimed to examine the influence of nomophobia on body image satisfaction and aggression.
The study utilized a quantitative research design and collected data from a sample of college students (N = 52) using convenience sampling. Correlational analysis and regression analysis were also employed on the data.
Findings suggest that the sample under study suffers from a moderate risk of nomophobia higher level of body image satisfaction and moderate levels of aggression. Also, there is a weak negative correlation between nomophobia and body image satisfaction and weak positive correlation between nomophobia levels and four aspects of aggression. In addition, nomophobia is not a significant predictor of college students' body image satisfaction and aggression. These findings highlight the detrimental effects of nomophobia on college students' psychological well-being. In conclusion, results suggest that guided intervention could help decrease the levels of nomophobia in college students, resulting in increased satisfaction with their body image and lower levels of aggression.
THE IMPACT OF MATERIALS MANAGEMENT ON WASTE MINIMIZATION ON GHANAIAN CONSTRUCTION SITES IN THE VOLTA AND OTI REGIONS OF GHANA
Authors: Bentum Mensah Frank , Tsotorvor Godfred , Kodwo Fordjour Francis , Tsorgali Engr. Michael 
Published: September 2023

Minimizing of waste of materials on the construction sites contributes greatly to the general cost of the building as a result of improper supervision on sites towards storage, handling and usage of materials. However, the cost of providing building materials required to complete any construction project is greatly high perhaps amounting to 55%-60% of the tender figure. The research was aimed at ensuring effective and efficient storage and handling of construction materials at construction sites in Volta and Oti Regions to ensure waste minimization harnessed with the needed productivity, in relation to construction material management.
To effectively carry out this project, a survey method through the use of techniques such as questionnaire, observation and interviews were undertaken to actually determine what took place on the construction site in terms of material management thus, storage and handling on construction sites. Population for the study covered 25 construction companies in both Volta and Oti Regions. Quota sampling technique was adopted to distribute questionnaires to 200 respondents and stratified random sampling techniques for selection of 50 operatives on sites visited. Furthermore, interviews were carried out for 15 interviewees and also observed 35 operatives. The method used to analyze the data was descriptive statistics in percentiles through the use of tables and charts. The results showed that, building materials are not properly kept, space allocated for material storage was not enough, poor mode of material transport to site and lack of keeping adequate records among few. It is hereby recommended that Contractors, Site Supervisors and Storekeepers in the construction industries needed to be given sufficient education on the technical knowhow of material storage and handling on site. Prompt delivery of material on sites, good documentations and transport of materials, coupled with proper supervision during batching and mixing of building materials, and finally, appropriate Site layout plans mostly showing location of building and also space allocated for material storage should be applied on most Ghanaian construction.
Sulianti Saroso’s Thoughts on Maternal Reproductive Health in Indonesia 1950—1961
Authors: Aini Syarifah , Amini Mutiah 
Published: September 2023

This research aims to discuss Sulianti Saroso as one of the important figures in the development of maternal reproductive health in Indonesia. Specifically, this research is focused on the period 1950-1961 based on Sulianti Saroso's many ideas related to maternal reproductive health which she pioneered while serving as Head of the Maternal and Child Welfare in Indonesia during that period. To understand her thoughts, the author used several primary sources in the form of ego documents including the memoirs of Sulianti Saroso's first child, the archives of Sulianti's biography that she wrote herself, as well as the archives of Sulaiman’s biography. To support this research, the author also used her interviews’s archives from Kedaulatan Rakyat Newspaper as well as some newspapers from the National Library of Indonesia, Solo Press Museum, and Dhelper. Meanwhile, for data analysis, the author used five stages of historical research, namely topic selection, source collection, verification, interpretation, and historiography. The results of the analysis then highlighted that as a figure who represents intellectual women, Sulianti's thoughts have a major contribution relevant to the development of maternal reproductive health in Indonesia. In conclusion, Sulianti Saroso can be considered as a significant figure in Indonesian health development.
Railway Network, Industrialization, and Development of Langsa, Aceh in 1907—1943
Authors: Rahman Aulia , Arie Wibowo Guntur , Akob Bachtiar 
Published: September 2023

This study aims to reveal the railway networks, industrialization, and development of Langsa, Aceh in 1907-1943s. In the early 1900s, Langsa was designed as a Government Center and a

new economic center on the East Coast of Aceh. However, Langsa was not yet connected to the railway networks, so it was necessary to build a railway line as one of the supporting infrastructures. The construction of the railway networks changed many things, ranging from urban landscape, economy, politics, to socio-culture. To pursue the aim of this study, historical methods consisted of heuristics, source criticism, interpretation and historiography were applied. The sources used were colonial archives, contemporary newspapers, contemporary magazines, and other relevant sources. This study found that the construction of the railway networks in Langsa was part of the Dutch colonial government's strategy to maximize economic benefits in the eastern coastal region of Aceh by building connectivity from the North and South regions. The development of the railway networks also had an impact on the growth of the economy, the mobilization of a dynamic population, the growth of good infrastructure for travelers, facilitating communication networks, to encourage the emergence of various types of new professions. However, the construction of the railway networks played a role in environmental damage in the eastern coastal region of Aceh as well as gave insignificant impact on the development of Aceh's indigenous human resources.
Making Meaning of Inanimate Objects as Characters in The Blue Umbrella (2013)
Authors: Saptiadi Nur Alifia Putri , Agustina Mia Fitria , Trisnawati Ririn Kurnia 
Published: September 2023

This study aims to reveal deeper and different meaning of an inanimate object, specifically umbrella, from naked eye's perspective in The Blue Umbrella Film. The Blue Umbrella Film, an animated short film directed by Saschka Unsled, employs inanimate objects as the characters as seen through the distinct human's facial expression painted on the black, blue, and red umbrellas To pursue the aim of this study, qualitative method was conducted together with Saussure's semiotic theory. The results showed that the black umbrellas signified as the majorities, while the blue and red umbrellas signified as the minorities. The black umbrellas also signified as a group of office workers as well as members of Sexual and Gender Majority. On the other hand, the blue and the red umbrellas signified as the members of Sexual and Gender Minority. In short, the movie highlights an encouraging message that it is okay to be different from the majority's choice.
The effect of biologically active substances of thyme (Thymus vulgaris L.) on the growth of yeast cells
Authors: Fedorova A. M. , Drozdova M. Y. , Milentyeva I. S. , Minina V. I. 
Published: September 2023

Prolongation of life expectancy and improvement of phenotypes directly related to the aging process have been the objects of many studies. Some of the known methods of increasing life expectancy, including dietary restrictions and genetic manipulation, are difficult to apply to all people, and their side effects are difficult to predict. It is for this reason that it becomes important to find those biologically active compounds that can act as anti-aging agents or can induce prolongation of life due to various metabolic processes inside the cell. The medicinal plant SFO thyme (Thymus vulgaris L.) is a source of many active compounds that can affect life expectancy. The present study was conducted to evaluate the effect of biologically active compounds of the extract of the callus culture of Thymus vulgaris L., dried by spray drying at different temperature conditions (60 ℃, 90 ℃, 120 ℃), on the growth of the experimental model Saccharomyces cerevisiae Y-564. Anti-aging effect of dry extract of callus culture Thymus vulgaris L. with concentrations of 0.25 mg/ml, 0.50 mg/ml and 1.00 mg/ml on a model yeast organism, the yeast cells were evaluated by increasing the biomass of yeast cells. The results of the studies showed that the best variant of the effect of the growth properties of the biomass of the yeast suspension S. cerevisiae Y-564 showed an extract of the callus culture Thymus vulgaris L., dried at a temperature of 90 ℃, with a concentration of 0.50 mg / ml. It was under such conditions that a stimulating increase in the biomass of the test culture was observed. These results of this study provide new insights into the mechanisms by which biologically active compounds extracted from the callus culture of Thymus vulgaris L. can slow down the aging process.
Technological aspects of the preparation of jelly marmalade of reduced sugar content and caloric content using a natural carbohydrate-containing product
Authors: Magomedov G. O. , Plotnikova I. V. , Litvinova A. A. , Magomedov M. G. , Plotnikov V. E. 
Published: September 2023

The article describes the characteristics and properties of natural honey varieties - buckwheat and sunflower. It also presents their comparative analysis of chemical composition, quality indicators, enzyme activity, antioxidant activity, vitamin C content and microbiological indicators. The innovative method of sugar-free jelly marmalade production based on honey by injection molding into a polymeric barrier shell is described. It has been stated that the replacement of white sugar and starch syrup by natural honey in jelly marmalade recipe leads to sugar and calorie content decrease of the product, an increase in its nutritional value, antioxidant activity, antibacterial properties due to the application with honey essential substances for a human body (vitamins of group B, C, antioxidants, antiseptics, enzymes, minerals, etc.). The use of a new method of forming and marmalade packaging in a polymer barrier shell leads to an extension of marmalade shelf life up to 6 months. Analysis of changes in the quality of jelly marmalade samples showed that moisture removal, and with it the process of drying after storage for 180 days, occurs more intensively – 2.2 times in a sample of marmalade packed according to traditional technology, while the content of reducing substances (to the total mass of dried marmalade) in this sample increased by 11.3 %. Daily consumption of the developed product helps to increase immunity, vitality, it normalizes metabolism, strengthens heart muscle, nervous system, it also improves food absorption, work of the gastrointestinal tract, etc. The developed dietary marmalade can be recommended primarily to children during their growth, the elderly people, athletes and adults with heavy physical exertion, obese as well.
Experimental study of the flow structure in packed tray-type column extractors
Authors: Berengarten M. G. , Kozin Y. V. 
Published: September 2023

Liquid extraction is a well-known separation process that has been widely used in the chemical industry for many years, for example, in the selective purification of oil fractions, in the purification of liquefied gases from hydrogen sulfide, in the production of petrochemicals, in the recovery of metals, in nuclear fusion, in food and pharmaceutical industry. On-going elaborations aimed at engineering solution search in order to improve mass-transfer processes are in progress on a permanent basis. Combination of trays and packing in the fractionator results in stream disequilibrium which leads to worse hydrodynamic conditions in the splitter (extraction, rectifier tower and etc.) and causes significant difficulties in stable operating process maintaining. The study objective is to review the structure of stream structures in the extraction tower via examples of trays and packing combinations since the mentioned contact devices are widely used in industry but they are conventionally applied as individual contact devices and not in combination. Combination of the above contact devices may earn a supplementary synergetic effect. In the course of the experiment it was found out and described in graphic format that stream disequilibrium could be eliminated and hydrodynamic conditions in the extraction tower could be improved via extra stream supply in the tower shell. Research will be useful for the development of new designs of column equipment, for example, extraction. In order to expand the experiment in various hydrodynamic modes, it is proposed to simulate the experiment using, for example, the Solid Works 2020 software package and, in particular, one of its add-ons - Flow Simulation.
The state of regional economic security and the directions of its provision
Authors: Gorkovenko E. V. , Platonova I. V. , Rogova E. A. 
Published: September 2023

Today, in an unstable international political situation, the urgent issue of ensuring national and regional economic security is more urgent than ever. Ensuring the stability of indicators of economic processes is to develop and improve a flexible system of protection measures against adverse external and internal factors and threats. It is the minimization of the impact of threats, as well as ensuring the stability and security of the economy in critical conditions that constitutes the essence of economic security. Based on objective and subjective factors, the subjects of the Russian Federation differ significantly in the level of socio-economic development and, as a result, in the level of economic security. Such a spread cannot but affect the level of security of the entire state. Regional specifics must necessarily be applied when assessing threats to economic security at the country level. In 2019–2020, the COVID pandemic significantly affected the state of not only regional, but also national economic security. The measures taken by the Government of the Russian Federation to stabilize the economic situation had a positive effect, but cost significant additional costs to both federal and regional budgets. Despite government support for business, there was a decline in the quality of life in the country, an increase in unemployment due to the reduction of staff by many enterprises, a reduction in workers' wages and other socio-economic phenomena that we consider as sources of risks and threats to economic security. As part of the study, an analysis of the state of economic security of the Voronezh region was carried out, threats to its economic security were identified and assessed. The state of economic security of the region in the period under study was negatively affected by: a significant increase in inflation against the background of the global crisis in 2020, a decrease in the share of investments in fixed assets, a drop in the index of industrial production, a drop in innovation activity, an increase in social tension. At the same time, the retail trade turnover per capita was marked by positive dynamics, the share of citizens with incomes below the subsistence minimum decreased, and the gross regional product grew. Among the threats to the economic security of the region, the most dangerous are: the increase in prices for goods and services, the slowdown in the growth of innovation and investment activity, the deterioration of the social sphere.
The use of hydrobiont collagen in the production of products based on minced fish
Authors: Vorobyov V. I. , Chernega O. P. , Berseneva A. R. 
Published: September 2023

The influence of certain fractions of fish scales (zander) used as an additive in minced meat from pollock fillets, as well as from by-products (backbones, tails, fins) of salmon obtained by separation on the physicochemical and organoleptic properties of the resulting semi-finished products and ready-to-eat – how products (meatballs). It was determined that with an increase in the percentage of adding additives to pollock minced meat, the mass loss of meatballs after baking (combi steamer) decreased compared to the control (46.25% – without adding scales) and amounted to (with a 10% addition of three fractions scales) respectively 29.50; 37.30 and 38.83%. It was revealed that the preliminary holding (stabilization) of these semi-finished products in a refrigerator at a temperature of 4 °C for 90 minutes, followed by baking, contributed to a more significant reduction in mass losses of finished products compared to the control (46.25%) and amounted to (at 10% addition of three scale fractions) respectively 24.00%, 18.7% and 24.39%. A similar reduction in mass losses of finished products occurred in the manufacture of meatballs from separated minced meat obtained from salmon by-products with the addition of certain fractions of fish scales in an amount of 1 to 10% by weight of raw materials. It is shown that with an increase in the percentage of addition of fish scale additives to minced meats, the ultimate shear stress (USS) of the resulting mixture increases, water-holding capacity (WHC), with an additive concentration in minced meat from 1 to 7% tends to decrease, and from 7 to 10% to increase in comparison with the control. Meatballs obtained from minced pollock and salmon with the addition of the collagen fraction of the scales (more than 2.5 mm) in the amount of 8 and 10% by weight of the raw material had a very delicate texture and a less pronounced fishy taste and smell.
Waste of brewing production - a coagulating agent in the technology of extraction of emulsion rubbers from latex
Authors: Sannikova N. Y. , Vlasova L. A. , Nechesova J. M. , Shcherbakova M. S. , Magomedov G. O. , Nikulin S. S. 
Published: September 2023

Today, there is a growing interest in the production of synthetic polymers, which are widely used in the production of modern materials. Of particular interest is the manufacture of rubbers by emulsion polymerization. Rubber compounds and vulcanizates made on their basis have characteristics due to which they are actively used in various industrial sectors. The coagulation process in the production of emulsion polymers increases environmental stress. Sodium chloride used at some enterprises as a coagulating agent is consumed in large quantities - up to 200 kg / t of rubber, and increases environmental pollution. In the presented work, for the first time, the possibility of recycling the beer production residue - inactivated yeast, which is proposed to be used to reduce the aggregative stability of disperse systems, is considered. The introduction of yeast into the emulsion polymer isolation technology makes it possible to reduce the amount of sodium chloride in the waters discharged from the enterprise. The use of a system based on a protein coagulant contributes to the complete release of coagulum from latex at a consumption of inactivated yeast in the amount of 10-15 kg/t of rubber. The most effective results were obtained when yeast preliminarily acidified with sulfuric acid was used in this process, which led to the charging of the nitrogen atom of the protein component. It is noted that the best temperature regime for the process of coagulation of latex particles is 1-20 ℃. An increase in temperature to 60 ℃ leads to an increase in the consumption of coagulant up to 25 kg/t of rubber. The ratios of the consumption of sulfuric acid and acidified yeast have been optimized, allowing to obtain the most complete coagulation of the latex. It has been established that the rubbers isolated using food production waste meet the requirements for rubbers of the SKS-30ARK brand according to the main physical and mechanical indicators.