bluuebunny/crossref_metadata_2025 huggingface dataset:
The State of the Lake-river System Affected By Mineral Production
Authors: Kuchko Yaroslav , Ilmast Nikolay , Kuchko Tamara
Published: January 2020

The current state of four water bodies in the upper and middle reaches of the River Kenti system, Western Karelia, affected by long-term industrial potassium-sulphate pollution, is assessed. The upper water body of the system, Lake Kostomukshskoye, is supplied by waste water from an iron mining concentration plant. Lakes Okunevoye, Poppalijärvi and Koivas are located downstream. Analysis of some hydrochemical indices and phyto- and zooplankton communities has shown that as the distance from the pollution source increases, the hydrological regime is stabilized, species diversity increases and the quantitative indices of the biotic constituent of the lake-river system grow. For example, the total mineralization value decreases from 632 дo 45 mg/l, the concentrations of major polluting agents, such as K+ and Na+ ions, decline by an average of two orders of magnitude and the medium reaction passes from alkaline (pН 7.7) to neutral (pН 6.8). The species composition of the phytoplankton varies from 18 to 23 species of six 6 divisions. The number of zooplankton taxa increases from 15 to 24 and average quantitative indices grow from 0.048 g/m3 (1.1 thousand individuals/m3) to 0.368 g/m3 (10.3 thousand individuals/m3), respectively. The data obtained were compared with earlier results.
Ichthyo-parasitological Characteristic of Lake Vokhtozero Roach
Authors: Mamontova Olga , Kuchko Tamara , Onishchenko Nikita , Pavlov Vadim
Published: January 2020

The article presents the results of ichthyo-parasitological studies of roach Lake Vokhtozero in the area of economic activity of the cage farm OOO Raduzhnaya forel (rainbow trout). It is shown that the age structure of the roach population is represented by fish aged 3+ to 10+ years. It is based on sexually mature individuals of middle age: 4+ (25%), 5+ (31%) and 6+ (21%). Of these, 61% are females and 39% are males. Roach is infected with parasites of 14 species belonging to five systematic groups: Myxosporea - 5 species, Trematoda - 5, Ciliophora - 2, Nematoda - 1 and Monogenea - 1. The most common ones are mixosporidia and trematodes. The parasitofauna of roach corresponds to a wide spectrum of nutrition of this species with a predominance of benthic herbivorous type in older individuals.
Development of Formulation and Technology of Low-lactose Dairy Beverage Made from Goat Milk
Authors: Antsyperova Mariia , Arseneva Tamara , Volkova Olga , Iakovchenko Natalia
Published: January 2020

The concept of lactose intolerance and solution approaches of this problem using modern dairy processing technologies are considered in this study. The protein and lipid constituents were calculated to select the basis of a low-lactose milk beverage. The β-galactosidase preparation was chosen and enzymatic hydrolysis conditions were optimized to obtain a dairy drink that meets the requirements for low-lactose products. To determine the residual amount of lactose in fermented milk, the method for determining whole blood glucose by enzymatic colorimetric method using Shimadzu UV-1800 spectrophotometry was adopted. The influence of technological factors on the dairy low-lactose drink properties was studied. The formulation has been developed and the manufacture process for obtaining a range of low-lactose beverages was adopted, the protein and lipid constituents in the finished product were calculated. The results of this study are considered to be socially significant since the low-lactose products are intended for people suffering from lactase deficiency.
Optimization of the Cremator Settings for the Disposal of Poultry Waste By Incineration in a Beet-emitting Boiler
Authors: Konovalov Victor , Konovalova Anna , Konovalov Vladimir , Denisov Sergey , Gumarov Gali
Published: January 2020

The purpose of this work is to substantiate the parameters of the boiler unit, which ensures the cremation of manure using microwave radiation. The substantiation of the amount of heat released during the burning of chicken manure at the industrial keeping of poultry in the conditions of sharply continental climate on the basis of minimization of product utilization values - ash content of wastes and pollution of smoke emissions is presented. Using the obtained regression models of magnetron emission power, moisture content of the burnt manure mass, mass air consumption for the specified product utilization parameters, the analysis of the relationship between the obtained parameters is made. Correlation analysis has shown a high correlation between the amount of heat released during the combustion of manure and the concentration of carbon monoxide in the smoke emissions. Rationally, the value of carbon monoxide content in the flue gases is 3.9%, corresponding to the amount of heat released 2.1 MJ/kg at the combustion of a kilogram of manure at the ash content of the residue of 18.4% and the initial moisture content of the manure of 38.4%. It provides power of radiation of magnetron 400 W on 1 kg of a waste and the mass flow rate of air of 13.8 kg/h.
Assessment of the Open Water State in Water Use Point of the Population the Murmansk Region
Authors: Litvinova Marina , Obukhova Ekaterina , Malaeva Anna
Published: January 2020

The study of the ecological situation in lake basins, including the assessment of water pollution, has become relevant recently, since the quality of drinking water depends on the quality of surface water bodies. The paper reflects the main results of water quality assessment of Lower Vaengskoye Lake in the Murmansk Region in the period 2016–2017. Hydro-chemical studies included the following indicators: biochemical consumption of oxygen, mass content of ammonium, nitrites, nitrates, sulfates, iron, coloration and hardness of water, permanganate oxidation. Natural factors are decisive contributors to the chemical composition of water. The sanitary status of the lake was assessed using the methods of microbiological analysis of water from the surface sources of water use. According to the microbiological indicators in the studies, water meets the requirements of hygienic standards. According to sanitary-chemical indicators, there is a variance with the requirements of hygienic standards in 10% of all the studies conducted, namely in terms of coloration, permanganate oxidation, and iron. On the whole, the quality of the lake’s water during the period of the study was assessed by the value of the integral hydro-chemical index as “pure” water (by the value of WPI). The results of the tests make it possible to conclude that the degree of the anthropogenic burden on the reservoir studied is insignificant.
Development of an Autoclave Thermal Processes Model for the Simulator of Canned Food Sterilization Process
Authors: Kaychenov Alexandr , Vlasov Aleksandr , Maslov Alexey , Selyakov Ilia , Glukhikh Yana
Published: January 2020

The article describes an autoclave thermal processes model, which is used for the simulator of canned food sterilization process. The simulator is based on a simulation model that adequately describes the reaction of the autoclave to the actions of the control system and the operator of the sterilization unit. The model’s parameters were obtained by means of experimental data processing. The computer program ”autoclave Model” for simulating sterilization process in the steam and water environment is described. The examples of the canned food’s manual control sterilization modeling are shown. The results of numerical mathematical modeling of canned food sterilization processes in the autoclave showed a high degree of the implemented process models quality of approximation. The calculation schemes done as a result of the mathematical models creation were used to develop a hardwaresoftware complex of the sterilization process simulator. The increase of training level on carrying out process of canned goods sterilization will be provided as a result of designing the simulator of sterilization process in educational process. Consequently reducing defects in production and improving the quality of canned products are expected.
Features of Forming the Composition of the Atmosphere in the City of Murmansk
Authors: Legostaeva Anastasia , Shironina Anastasia , Malaeva Anna
Published: January 2020

The article is devoted to the issues of planning and development of urban environment in the Arctic region of the Russian Federation, the city of Murmansk located beyond the Arctic Circle is investigated as an example. The article provides a description of the natural and climatic conditions, characteristic of the latitude of the city, it also gives a detailed analysis of the site development and the microclimate it formed, impacting greatly on the distribution of pollutants in the city’s outside air and, consequently, on the comfortable conditions for the northerners living. The conclusions are based on the surveys of more than 200 industrial facilities located on the territory of Murmansk and the city’s transport as well. The analysis of their combined impact on the outside atmosphere of the city was conducted by the specialists of JSC Research Institute ”Atmosphere” applying the system of summary calculation.
Figure Influence of the Barents Sea Frontal Zones on Chlorophyll Concentration in Spring
Authors: Makarevich Pavel , Vodopianova Veronika , Bulavina Aleksandra , Kalinka Olga
Published: January 2020

In spring of 2016, 2018 and 2019, chlorophyll a (Chl a) content was studied in the 0-50 m layer on the vast Barents Sea area - to the north of 75∘ N. Standard sampling was carried out at 11 oceanographic transects, including 52 stations. Due to the negative ice anomalies and the high-latitude position of the ice edge, original data on Chl a concentration for spring period were obtained in hard-to-reach and previously unexplored areas of the Barents Sea. The investigation area covered the Marginal Ice Arctic zone, as well as the area where the Polar Front was located quasi-stationary. The effect of the Marginal Ice Arctic and Polar frontal zones on the distribution of Chl a concentration was revealed. The strongest factor influencing the distribution of chlorophyll was the Polar Front. It divided mainly Arctic and Atlantic waters. The highest pigment concentrations corresponded to the Arctic water mass and exceeded the content of pigment in water of Atlantic origin by an order of magnitude. The impact of the Marginal Ice Arctic Front was not so obvious - the content of Chl a in waters of various genesis differed, but not more than by a factor of 2.
Contemporary Issues of Commercial Invertebrates’ Harvesting in the Russian Sector of the Barents Sea
Authors: Sokolov Konstantin , Tyukina Olga , Martynova Daria
Published: January 2020

The Russian fishery for invertebrate hydrobionts in the Barents Sea includes the list of a dozen species of crustaceans, mollusks, and echinoderms. This type of fishery is characterized by great diversity in relation to the status of exploited stocks, catch size, and economic efficiency of the fishery. The list of up-to-date problems of this industry is long and includes biological, scientific, commercial, socio-economical, and market issues. Among the main problems of the Russian invertebrate fishery in the Barents Sea, overfishing, underutilization of a number of stocks, and significant emissions from fishing waste are considered. The causes of these problems, possible solutions and the priorities of such a solution are analyzed.
Biologically Active Complex with High Antioxidant Properties Based on Macrophytes of the Azov-Black Sea Basin
Authors: Donchenko Lyudmila , Bitutskaya Olga , Vlaschik Lyudmila , Limareva Natalia
Published: January 2020

The article presents the results of studying the chemical composition of commercial macrophytesfrom Azov-Black Sea basin – brown algae Cystoseiraspp.andSea grass of the family Zosteraceae. It is shown that the objects selected for the study are sources of alginic acid, fucoidan, pectins, water and fat soluble vitamins, macro-and microelements. A high content of iodine and selenium is also noted. The data are given on physico-chemical characteristics of the selected Zosterin (methoxyl component, acetyl group, complexing and jelly-forming ability), the feasibility of expanding its use in the production of food products of functional purpose is substantiated. The technological applicability of dark-colored grape varieties as a raw source of compounds with antioxidant properties has been experimentally proved. Chemical composition of developed biologically active complexes of ANTIOXI VITA and ZOSTERA VITAis shown. Their suitability for inclusion in the diet of modern human as a means of high antioxidant and detoxifying propertiesis substantiated.
Assessment of the Functional and Technological Properties of Zooprotein Based on Fly Larvae (Lucilia Caesar) As Feed Composition
Authors: Nadtochii Liudmila , Melchakov Roman , Muradova Mariam , Lepeshkin Artem , Istomin Aleksey
Published: January 2020

Recently, biotechnologies are gaining large scale as promising areas of science that are exploring the possibilities of using living organisms, systems or products of their vital functions for solving technological problems. The object of present research is the high-protein preparation Zooprotein based on the larvae of the fly species Lucilia Caesar. The insect gained wide popularity due to the highly effective bioconversion of various solid organic waste, as well as the high nutritional value of the larvae with the possibility of using fly larvae in farm animals and aquaculture feeding. The high-protein preparation Zooprotein based on the larvae of Lucilia Caesar can be considered as a promising functional ingredient for feeding diets for various animal species due to unique chemical composition. Present study provides data on the antimicrobial properties of Lucilia Caesar flies from the point of view of the safety in use of the high-protein feed ingredient Zooprotein as feed composition. In addition, the functional and technological properties of Zooprotein were evaluated in comparison with other commonly used ingredients in the feed industry, in particular fish and meat and bone meal. Also, the main basis for its application is the ability to bind moisture and fat, create a specific structure for the finished product, and, finally, the harmlessness of using this product. The main purpose of present research is to study the functional and technological properties of high-protein preparation Zooprotein in comparison with other commonly used feed ingredients.
Justification of the Recipe Composition of Biscuit Using Functional Additives
Authors: Sokolova Olga
Published: January 2020

Increased production of processed foods, rapid urbanization and changing lifestyles have led to a shift in dietary patterns. Nowadays, people consume more foods high in calories, fat, free sugars, and salt/sodium, and many do not consume enough fruits, vegetables, and other types of fiber such as whole grains. The article describes the principles of healthy nutrition, which are justified by the World Health Organization (WHO). The recipe composition of the biscuit using a mixture of potato and corn starches, oat bran replace part of the sugar on stevioside with the addition of functional additives in the Arctic region, namely black currant juice, grown in Lovozero. It is known that black currant contains vitamins, organic acids, sugars (fructose and glucose), flavonoids, pectin, minerals and adding it to the formulation can increase nutritional and functional value. The article shows the results of the study of biscuit quality using functional additives of the Arctic region. The composition of the biscuit: the ratio of the added vegetable raw materials is scientifically proved. A point scale of quality of functional biscuit products with the use of additives from the raw materials of the Arctic region was developed. The composition of the finished product was investigated.
Use of Marine Biological Resources of the Arctic Region for Creation of Combined Fish and Vegetable Canned Pastes
Authors: Kuranova Lyudmila , Grokhovsky Vladimir , Ershov Mihail , Pilipenko Anastasia
Published: January 2020

The article discusses the possibility of expanding the species composition of sterilized food products through harvesting and processing of fucus algae growing in the Arctic littoral. Their rich chemical composition is shown, having a high content of such essential nutrients as polysaccharides, iodine, and water-soluble vitamins. Microbiological and toxicological studies of fucus algae F. vesiculosus and A. nodosum conducted by the authors have proved the safety and possibility of using fucus algae in food production. The article presents the results of the newly-developed manufacturing technology for canned fish pastes with vegetable components on the example of Northern blue whiting (Micromesistius poutassou) and the Barents Sea algae (Fucus vesiculosus). The authors worked out the technological scheme, optimized the product formulation, provided the scientific substantiation for the product sterilization regime, and evaluated the quality of the finished product. The combination of fucus properties with fish tissues enabled the authors to bring closer the solution to the problem of developing food products with a balanced nutrition formula. The functionality of the developed sterilized product based on the content of iodine, calcium, magnesium and phosphorus is shown.
Convective Drying at Fish Chips Technology
Authors: Pokholchenko Vyacheslav , Smirnova Aleksandra , Glukhikh Yana
Published: January 2020

The article presents the overview of the main technological processes in fish structured products dehydration. The rational modes of the technological process of minced fish raw materials with various initial moisture and fat content heat treatment are determined. One of the main tasks of the fish processing industry development which allows increasing the profitability of products and their quality is improving technological processes. The scientifically substantiated choice of resource and energy-saving modes of processing food materials is highly important in this case. It will reduce not only production costs but also emissions of harmful substances into the environment and increase the efficiency of using equipment. It must be taken into consideration that the optimization of dehydration technological processes without identifying their patterns is extremely difficult. Increasing efficiency and controlling technological processes makes sense only on the basis of patterns. The effectiveness of the hydrobionts processing determines the quality and cost of finished products manufacturing while fish processing enterprises working. The development and implementation of highly efficient technologies with the use of resource-saving technical systems, for example, using heat pumps, makes it possible to produce cost-effective high-quality products.
Technology of Minced Fish Canned Food from Thorny Skate, Enriched with Chondroitin Sulfate
Authors: Raybulov Sergey , Shokina Yulia
Published: January 2020

The article presents the results of theoretical and experimental research on the development of technology of functional minced fish canned food. Study of consumer preferences and the market of canned fish in the Murmansk region allowed to determine the range of novelties such as canned fish (”Skate and cod in white sauce” and ”Meatballs made from skate and cod in tomato sauce”), enriched with chondroitin sulfate (CS). The use of thorny skate’s (a fish that lives in the North Atlantic and the Barents Sea) wings meat for canning purposes enriches the composition of canned food. The content of CS in one can of canned food with net weight of 250 g ranged from 550 to 700 mg. This guarantees the intake of human body from 78 to 100% of the daily rate of this powerful chondroprotector. To remove urea from the skate’s meat, the method of infrared blanching is proposed, which ensures the efficiency in removal of urea at over 70% of its initial content in fish. Infrared blanching allows not only saving raw materials from unpleasant smell, but also partially removing water from it (water losses are from 8 to 13%). Partial dehydration of raw materials allows avoiding formation of water sedimentation in ready-made canned goods after sterilization. With the help of the fuzzy logic method, the MatLab program determines the optimal formulations of canned food, which guarantee their best consumer properties. The Ellab device has been used to experimentally select sterilization modes, which guarantee industrial sterility of canned food, hence the actual sterilization effect is higher than the standard one. During the two years of research, experimental studies of organoleptic properties, microbiological and biochemical changes in canned food were carried out, which made it possible to establish the shelf life: one year at a storage temperature not exceeding 20ºC.
The Estimation of the Initial Stage of Succession of Green-pine Trees Windfall in the Eastern Moscow Suburbs
Authors: Zykov Igor , Khotuleva Olga , Egorova Galina
Published: January 2020

The paper is devoted to the study of entomocomplex of stem pests, the number and biology of its dominant species and the ecological structure of the soil mesofauna of the two differing in composition and growing conditions, areas of wind pine forests-green insects. The main causes of windfalls, which are unfavorable soil and soil conditions and the defeat of trees by the root sponge, are established. The degree of participation of different types of feed substrate in the dynamics of the number of stem pests in the lesion is estimated. In addition to the windfall of trees, stem pests are the adjacent one, decreasing the resistance of pine in the walls of the forest, overmature trees or trees weakened by anthropogenic, standing trees, the trunks of which are damaged by windfall to a lesser extent than the remaining standing part of inboard of broken trunks. We identified eight species of entomophagous parasitic on the grubs of Longhorn beetles and jewel beetles. It is noted that the population of ground beetles, in windswept areas studied, is characterized by a decrease in species diversity, a decrease in the number of moisture-loving species typical of pine forests of the Eastern Moscow region, a change in the spectrum of life forms in the direction of reducing litter species and increasing the proportion of litter-soil.
THE BASED BANK RATING INFLUENCE TOWARD BPR SYARIAH PROFIT GROWTH IN EAST JAVA
Authors: Tri Indrianasari Neny , Ermawati Emmy , Bahtiar Sulistyan Riza , Ifa Khoirul , Hudi Setyobakti Moh.
Published: January 2020

Purpose of the study: This study aimed to determine the effect of the level of health of the banking consisting of Non-Performing Financing (NPF), Financing to Deposit Ratio (FDR), Return on Asset (ROA), Return on Equity(ROE) and Capital Adequacy Ratio (CAR) to the BPR Syariah Profit Growth in East Java province.

Methodology: This study uses a quantitative approach to analyze the description of the measured ratios

Main Findings: The study concluded that the NPF ratio and ROE no effect on profit growth. Except for FDR, ROA and CAR have a significant effect on earnings growth.

Applications of this study: The populations used in this study were all Sharia Rural Bank (BPRS) East Java Province recorded in the Financial Services Authority (FSA) selected period 2015-2017 with a total population of 26 banks.

Novelty/Originality of this study: BPR Syariah is a banking company that has different characteristics compared to conventional banks. With these different characteristics, Sharia Rural Banks need to be reviewed specifically, where conventional bank reviews are not necessarily in accordance with Sharia Rural Bank conditions.
Early bacterial identification and carbapenemase detection from positive blood culture by mass spectrometry and Blue-Carba test
Authors: CATTANİ María Eugenia , COGUT Sandra , KAUFMAN Sara C.
Published: January 2020

Objectives:
In this study, we evaluated a rapid and simple protocol for direct
identification of microorganisms with Matrix-Assisted Laser
Desorption/Ionization Time of Flight, Mass Spectrometry (MALDI-TOF MS) after a
short incubation in solid medium (3 to 5h). Methods: We have examined a total
of 1101 positive blood culture bottles from 782 patients. Results: We obtained a correct
identification in 1037 (94.18%); 190 (98.44%) were Staphylococcus aureus, and 386 (98.44%) Enterobacteriaceae. Both are the most
frequent etiological agents of sepsis. A total of 1004 bottles were monomicrobial
(96.81%) and 33 (3.18%), polimicrobial. In the latter we identified at least one
species. Two hundred eighty (27.00%) organism isolated were considered skin
contaminant. Carbapenemase tests were performed with Blue-Carba test in 140
patinas from Gram negative bacilli, we have detected earlier 27 of 29 positive
(93.10%).

Conclusions: Mass spectrometry by MALDI-TOF MS is very useful
to quickly identify the microbial agent and Blue-Carba contribute to adapt the
antibiotic therapy to obtain a correct clinical management of the patient with
bacteremia.
Emerging Myanma—From Regime to Reforms
Authors: Rubaj Piotr ,   Department of International Economy, Institute of Economics and Finances, John Paul II Catholic University of Lublin, Lublin, Poland.
Published: January 2020

During decades of isolation beginning from 1962 and lasting till 2011, Myanmar seriously suffered from international sanctions. Ruled by the military regime, the country was doomed to economic and social failure. Studying the process of its transformation seems to be very interesting both from business and scientific points of view, and this is the main purpose of the paper. The literature and information about Myanmar's reforms are considerably limited and it is deeply justified to contribute to the knowledge on this fast emerging country. The methodology used in this article is based on the analysis of the existing statistical data, coming from international reports and statistic yearbooks. The basic param-eters of these analyses concern macroeconomic and social indicators. Comparisons with The Association of Southeast Asian Nations (ASEAN) countries are critical for the conclusions drawn in this article. On its way to the formation of a democratic society Myanmar faced a lot of problems. Some of them, such as the unsolved Rohingya refugee crisis, have had a bad effect not only on domestic reforms, but also a global effect, sometimes recognized as an international crisis. For business, Myanmar is one of the fastest growing economy in the world with a population of 51 million, which makes it an attractive market. The GDP per capita in Myanmar is low, so the domestic market guarantees a growing demand.
A Model for Companies to Overcome US–China Conflict on International Trade
Authors: Sousa Miguel , Sousa Maria J. , Cruz Rui ,   Essex University, Essex, United Kingdom,   ISCTE - Lisbon University Institute, Lisbon, Portugal,   European University of Lisbon, Lisbon, Portugal.
Published: January 2020

This article aims to study international trade specificity and the main activities of Chinese companies in US markets. It addresses the strategic tools of companies and their application in a global and very competitive market, framed by public policies and governments' strategies. It explores the principles of the internal and external environment of the countries. The main research question is: what are the dimensions of a model to potentiate the US–China Companies? The principal methodology used in this research was a literature review, and the analysis was based on the papers that research the theme US and China trade relations. The findings reflect that international trade is conditioned by the government politics, and there are several other obstacles that a US or Chinese company need to overcome: (a) economic forces; (b) technological forces; (c) political–legal forces; (d) sociocultural forces; and (e) physical forces.
Innovation Public Policy—The Case of Portugal
Authors: Sousa Maria J. , Ferreira Carla , Vaz Dulce ,   Professor, ISCTE—Lisbon University Institute, Lisbon, Portugal.,   Office for Strategy and Studies (GEE), Ministry of Economy, Lisbon, Portugal.,   Office for Strategy and Studies (GEE), Ministry of Economy, Lisbon, Portugal.
Published: January 2020

Innovation public policy has an essential role in influencing the competitive capacity of companies and is strongly associated with their ability to innovate and the way they are organized. As important as the technological organization of work is the social dimension, namely, involvement, participation, and commitment of the workforce, as these are, par excellence, factors that contribute to creating added value and differentiation for companies. In this sense, the concept of innovation depends on an integrated vision between the human dimension and the other multiple dimensions that innovation can assume. Public policies, besides the goal of creating a more modern and competitive business and industrial context, also are focused on the development of the workforce, not only in digital competences but also in soft skills. This type of skill contributes to creating a more innovative context and a culture of innovation. This article's goal is to make a global overview of innovation and the public policies to promote the modernization of companies and influence the way they contribute to economic growth.
Virus-Free Plant Regeneration from Shoot Apical Meristem of Coccinia grandis L., an Important Medicinal Plant in Bangladesh
Authors: Hasan Md. F. , Jannat Mst M. , Zaman Rashed , Sikdar Biswanath ,   Department of Genetic Engineering and Biotechnology, Faculty of Life and Earth Sciences, University of Rajshahi, Rajshahi – 6205, Bangladesh.,   Department of Genetic Engineering and Biotechnology, Faculty of Life and Earth Sciences, University of Rajshahi, Rajshahi – 6205, Bangladesh.,   Department of Genetic Engineering and Biotechnology, Faculty of Life and Earth Sciences, University of Rajshahi, Rajshahi – 6205, Bangladesh.,   Department of Genetic Engineering and Biotechnology, Faculty of Life and Earth Sciences, University of Rajshahi, Rajshahi – 6205, Bangladesh.
Published: January 2020

This investigation was undertaken to establish an efficient protocol for virus-free plant regeneration in Coccinia grandis L. through shoot apical meristem culture. Murashige and Skoog (MS) basal medium supplemented with different concentrations and combinations of 6-benzyl amino purine (BAP), gibberellic acid (GA3), naphthalene acetic acid (NAA), and indole-3-butyric acid (IBA) was used for meristem establishment, shoot regeneration, and root induction as well as elongation. MS liquid medium supplemented with 1.0 mg l-1 BAP + 0.10 mg l-1 NAA was found to be the best medium for the primary establishment of meristems. MS medium containing 1.5 mg l-1 BAP + 0.5 mg l-1 GA3 + 0.5 mg l-1 NAA was found to be best for shoot regeneration percentage at 100.0 ± 0.0 and multiplication with 10.0 ± 0.8 shoots per meristem as well as shoot elongation (highest 9.0 ± 0.0 cm). In vitro grown shoots were subcultured and rooted with 11.0 ± 0.8 roots per shoot subsequently on MS medium containing 0.5 mg l-1 IBA. Well-rooted plantlets were gradually acclimatized and successfully established in the field condition with 100% survival rate.
Effects of single parenting on childcare: A case of single mothers in Masvingo urban, Zimbabwe
Authors: Mtemeri Jeofrey
Published: January 2020

This quantitative study sought to explore the effects of single parenting on childcare in Masvingo urban, Zimbabwe. The cross-sectional survey design was adopted in the study. A standardised questionnaire was used as the data collection instrument. A sample of 47 single mothers residing in Masvingo urban was selected using stratified random sampling. Data were analysed through descriptive statistics. Findings of the study revealed that single mothers were labelled as having loose morals and had suffered from a mental disorder at least once before. Single mothers were moving frequently in search of better-paying jobs and cheaper accommodation. This study further revealed that children raised by single mothers did not have behavioural problems but, however, had emotional problems. The study recommended that a comprehensive study covering a wider geographical area be done to enable generalisation of results to a wider population. The study further recommended that policies that support single mothers in their endeavours to support the children be enacted.

Keywords: Single mother, childcare, Masvingo.
Effectiveness of family involvement activities in pre-school education
Authors: Aytac Pembe , Demirbas-Celik Nur , Kiracioglu Duygu
Published: January 2020

The purpose of this research was to examine the effectiveness of family activities which are improved for the families. In this research, content improved family involvement activities were applied to the families whose children continue their preschool mothers’ and fathers’ family involvement were compared. Research’s experiment group includes the parents of 16 students who continue their pre-school education. Control group includes the parents of 10 students. Family Involvement Questionnaire (FIQ) has been used to test the effectiveness of family involvement activities. This FIQ measures the family involvement as school-based involvement, home–school conferencing and home-based involvement. In data analyses, the Mann–Whitney U test has been used. FIQ has been answered by all the parents from experiment group and 10 mothers and 6 fathers from the control group. The result of analyses has shown that there is no difference between experiment and control groups’ family involvements. In the experiment group, mothers’ home–school conferencing permanent involvement scores are higher than the fathers’ home–school conferencing involvement scores. The results of the research have been argued, and the suggestions were given to pre-school teachers and related research workers.
Keywords: Family involvement, home–school conferencing, pre-school education
SYPHILITIC AORTITIS WITH FATAL OUTCOME IN YOUNG AGE
Authors: Krupin K. N. , Nedugov G. V.
Published: January 2020

This report presents a case postmortem diagnosis of the syphilitic aortitis оf a 26-year-old man associated with an aneurysm of ascending aorta complicated with dissection, rupture of the aneurism and cardiac tamponade. Authors conclude about the need to include syphilis into the list of the differential diagnosis of any lymphoplasmocytic aortitis and of any ascending aorta aneurysm.
MEDICO-LEGAL EXPERTS OF THE INVESTIGATIVE COMMITTEE OF THE RUSSIAN FEDERATION: THE BEGINNING OF THE BIG WAY
Authors: Spiridonov V. A.
Published: January 2020

The initial stage of the work organization and carrying out of medico-legal examinations in the system of the Investigative Committee of the Russian Federation is clarified. The prospects of activities of the medico-legal experts of the Investigative Committee in the light of the founding a separate expert institution are discussed.. As a result of the positive experience obtained from the work of the medico-legal experts of the Investigative Committee, the regional departments of the Investigative Committee were given the opportunity to introduce the positions of medico-legal experts. The department of medico-legal examinations was created in the department of organization of forensic science activities of the Main Department of Forensic Science (Forensic Center), the head of the department was appointed, and painstaking work was begun on selection of personnel and organization of the performing the medico-legal examinations.
METHODOLOGICAL RECOMMENDATIONS FOR THE FINAL COMPARISON OF THE CLINICAL AND PATHOLOGICAL / FORENSIC DIAGNOSES
Authors: Zabozlaev F. G. , Zairatyants O. V. , Kakturskii L. V. , Klevno V. A. , Kuchuk S. A. , Maksimov A. V.
Published: January 2020

The Guidelines for comparing the final clinical and pathological / forensic diagnoses are a joint work of the working group of professional non-profit medical associations – the Russian society of pathologists and the Association of forensic experts, placed in the information system of the Ministry of health of the Russian Federation «Electronic rubric of clinical recommendations’ in the section «Guidelines». Presents the guidelines contain structured information on issues between final clinical and postmortem / forensic medical diagnosis: lists the terms and definitions, describes the rules for mapping of diagnoses and recommendations for determining the cause and category of a divergence of diagnoses, recommendations for the design of the matching results for further diagnoses of clinical-expert work. The purpose of the guidelines is the formation of uniform requirements for the rules of comparison of the final clinical and pathological / forensic diagnoses.
PURKINJE CELLS OF THE CEREBELLUM IN CLOZAPINE AND CLOZAPINE ETHANOL POISONING (EXPERIMENTAL RESEARCH)
Authors: Golubev A. M. , Sundukov D. V. , Churilov A. A. , Ershov A. V. , Romanova O. L. , Telipov I. N.
Published: January 2020

Objectives. Systematization of cerebellar Purkinje cell injuries to clarify the pathogenesis of combined clozapine-alcohol poisoning and to substantiate the immediate cause of death. Material and methods. Experimental studies were performed on 25 white outbreed rats divided into 5 groups: control, group I (clozapine 3 hours), group II (clozapine 24 hours), group III (clozapine + alcohol 3 hours), group IV (clozapine+alcohol 24 hours). Te assessment of Purkinje cell injury was performed using the classifcation of neuronal damage.Results. In the control group of animals reversible changes in Purkinje cells prevailed: primary irritation and acute swelling (15-20%). Irreversible changes were detected in 2-5%. In case of clozapine poisoning the number of Purkinje cells with irreversible changes (shrinking, karyocytolysis, severe changes, Ghost-like cells) was increased. Te percentage of Purkinje cells with such changes was 30-40%. In case of combined clozapine-alcohol poisoning the percentage of irreversible Purkinje cells injury increased to 40-60% (especially 24 hours afer starting the study). Quantitative diferences in irreversible changes in Purkinje cells in the experimental groups were statistically signifcant if compared to the controls (p0.05). Conclusion. As a result of the study the most commonly detected injuries of Purkinje cells of cerebellum in clozapine poisoning were revealed. Te most prominent damage to Purkinje cells with predominance of irreversible changes were found in cases of combined clozapine-alcohol poisoning. 24-hour duration of the experiment led to the more severe Purkinje cell injuries if compared to the 3-hour duration.
Sonogram Ginjal dan Kantung Kemih Berdasarkan Variasi Bentukan Urolit pada Anjing (SONOGRAM OF KIDNEY AND URINARY BLADDER BASED ON SHAPE VARIATION OF UROLITH IN DOG)
Authors: Simatupang Grace Tabitha Tenggi Olihta , Sudisma I Gusti Ngurah , Arjentinia I Putu Gede Yudhi
Published: January 2020

Urolithiasis is a condition of the presence of urine stones (urolite), crystals, or sediments in the urinary tract system. The urinary tract system that is prone to urolithiasis includes the kidney, ureter, can be found in the bladder (bladder), and in the urethra in excessive amounts. This study aims to analyze the relationship between urolite formation that occurs in the bladder and urolite formation that occurs in the kidneys through ultrasound examination. This study used 15 dogs indicated by urolithiasis. Ultrasonography shows urolites, crystals and sediments in the bladder sonogram and in the kidneys. Kidney sonograms and bladder sacs refer to the occurrence of urolithiasis in the bladder which will always be followed by the occurrence of urolithiasis in the kidneys. Generally urolites are in the mucosa and bladder lumen while the kidneys are in the medulla and renal pelvis. There are several sonograms showing the buildup only occurs in one part both in the bladder and also in the kidneys. The presence of urolite in the mucous portion of the bladder is due to the gravitational force. Whereas clumps of cloud in the form of debris cells found in the lumen occur due to agitation and contraction of the bladder therefore that urolites are mixed with urine. The renal medulla and pelvis in the kidneys are channels of filtration in the kidney urinary tract. This results in a large urolithic buildup due to filtration when the urine is delivered to the bladder.
Hydrodynamics in spray and packed liquid-liquid extraction columns: A review
Authors: Sovilj Milan N. , Nikolovski Branislava G. , Spasojević Momčilo Đ.
Published: January 2020

This work provides a review of hydrodynamic characteristics such as the slip velocity, the dispersed-phase holdup, mean drop size, and axial dispersion of non-mechanically agitated liquid-liquid (L-L) extractors, with special reference to spray and packed bed columns. The complexity and importance of hydrodynamic behavior in designing and scaling up L-L extractors was a driving force to analyze, compare and discuss some important experimental findings available in the literature. The effects of phase velocities and the dispersed-phase holdup on the slip velocity, the mean drop size and the axial dispersion coefficient were studied and presented. Empirical correlations for slip velocity, the Sauter mean drop diameter and the axial dispersion coefficient, which were taken from the literature, were commented in terms of their applicability.
Development and validation of a SPE-UHPLC-fluorescence method for the analysis of ochratoxin-a in certain Turkish wines
Authors: Oncu Kaya Elif Mine
Published: January 2020

A sensitive Ultra-High Performance Liquid Chromatography (UHPLC)-fluorescence method was developed and validated for the determination of ochratoxin-A (OTA) in Turkish wine samples. Naphthalene was used as an internal standard in this study. OTA was separated on a C18 (3.0 mm × 100 mm × 1.8 µm) column and analyses were run under isocratic conditions, with a mobile phase consisting of water/acetonitrile/acetic acid (50:50:1, v/v/v). The flow rate and injection volume were 0.5 ml min−1 and 10 μl, respectively. The excitation and emission wavelengths were 330 nm and 460 nm for OTA, respectively, and 220 nm and 325 nm for internal standard, respectively. A solid-phase extraction (SPE) clean-up procedure on a C18 cartridge was used prior to the analysis of the wine samples by UHPLC. The developed method was validated with respect to linearity, precision, accuracy, limit of detection (LOD), limit of quantitation (LOQ), stability and robustness. The method presented good RSD (< 4 %) and recovery (102.6–105.2 %) values. The LOD and LOQ values were 0.01 ng ml–1 and 0.05 ng ml–1, respectively. All other parameters were acceptable. OTA amounts were found in the range of 2.72‒7.40 µg kg‒1 in the Turkish wine samples.
Identification and quantification of phenolic compounds in pomegranate juices from eight Macedonian cultivars
Authors: Petreska Stanoeva Jasmina , Peneva Nina , Stefova Marina , Gjamovski Viktor
Published: January 2020

Punica granatum L. is one of the species enjoying growing interest due to its complex and unique chemical composition that encompasses the presence of anthocyanins, ellagic acid and ellagitannins, gallic acid and gallotannins, proanthocyanidins, flavanols and lignans. This combination is deemed responsible for a wide range of health-promoting biological activities.This study was focused on the analysis of flavonoids, anthocyanins and phenolic acids in eight pomegranate varieties (Punica granatum) from Macedonia, in two consecutive years. Fruits from each cultivar were washed and manually peeled, and the juice was filtered. NaF (8.5 mg) was added to 100 ml juice as a stabilizer. The samples were centrifuged for 15 min at 3000 rpm and analyzed using an HPLC/DAD/MSn method that was optimized for determination of their polyphenolic fingerprints.The dominant anthocyanin in all pomegranate varieties was cyanidin-3-glucoside followed by cyanidin and delphinidin 3,5-diglucoside. From the results, it can be concluded that the content of anthocyanins was higher in 2016 compared to 2017. But in contrast, the total content of non-colored polyphenols was around 10 times lower in 2016 compared to the amount found in the same samples in 2017.
Relation between learning approaches of chemistry students and their achievement in general chemistry
Authors: Olić Ninković Stanislava , Adamov Jasna , Vojinović Ješić Ljiljana
Published: January 2020

This research was conducted with the aim of investigating the relationship between students’ approaches to learning chemistry and their levels of achievement. The sample was comprised of 46 students in the first year of the Faculty of Sciences in Novi Sad (Serbia). The research involved two instruments: a knowledge test and an instrument for assessing the learning approach. The results showed that students have difficulties in understanding the factors that influence the chemical equilibrium, as well as with writing equations of the chemical reaction of salt hydrolysis. Most students use a deep approach to learning chemistry content. The deep approach significantly correlates with student achievement. On the basis of these results, it is concluded that is important to create a climate in the classroom that will encourage a deep approach to the study of chemistry.
Crystal structures of the bis-bidentate N2S2 Schiff base ligand and its copper(I) coordination polymer
Authors: Dehno Khalaji Aliakbar , Peyghoun Seyyed Javad , Dusek Michal , Kucerakova Monika , Akbari Alireza , Feizi Nourollah
Published: January 2020

A new flexible bis-bidentate N2S2 Schiff base ligand (2,4-Cl-ba)2dapte = N,Nʹ-bis-(2,4-dichlorobenzaldehyde)-1,2-di(o-iminophenylthio)ethane and its copper(I) coordination polymer [Cu2(μ-I)2(μ-(2,4-Cl-ba)2dapte)]n, were synthesized and characterized by CHN elemental analysis, FT-IR and UV-Vis spectroscopy and single-crystal X-ray diffraction. The molecule of (2,4-Cl-ba)2dapte adopts a trans conformation of the 1,2-di(o-iminophenylthio)ethane unit. The (2,4-Cl-ba)2dapte acts as a bis-bidentate ligand with two iminic nitrogen and two sulfur atoms, coordinating to copper(I) ions in an anti-form leading to the dinuclear Cu2(μ-(2,4-Cl-ba)2dapte) groups. These groups are then bridged by two iodide anions to form a copper(I) coordination polymer [Cu2(μ-I)2(μ-(2,4-Cl-ba)2dapte)]n. The coordination geometry around the copper(I) ions is a distorted tetrahedron. Finally, a nano-sized form of the copper(I) coordination polymer [Cu2(μ-I)2(μ-(2,4-Cl-ba)2dapte)]n was prepared by an ultrasonic bath assisted process and characterized by elemental analysis, FT-IR and SEM.
Transesterfication Process of Waste Cooking Oil Catalyzed by Na/CaO Derived from Blood Clam (Anadara Granosa) Shells
Authors: Kurniawan Edi , Nurhayati Nurhayati
Published: January 2020

Abstract: Blood clam (Anadara granosa) shells has the potential to be developed as a base heterogeneous catalysts for biodiesel production. Blood clam (Anadara granosa) shells has a high mineral content of calcium carbonate (CaCO3). CaCO3 can be decomposed into CaO at high temperature heating. In this study, CaO catalyst synthesized from the blood clam (Anadara granosa) shells calcined of 900 °C for 10 hours and then impregnated using NaOH (1, 3, and 5% w/w) the activation temperature of 600 °C for 5 hours. 3% Na/CaO catalyst was the most better catalyst with maximum biodiesel results obtained at 83,57% using the 3% Na/CaO catalyst. The maximum conditions obtained from biodiesel production using the 3% Na/CaO catalyst on the reaction temperature at 60 °C, the reaction time of 3.5 hours, stirring speed of 250 rpm, 3 g weight of catalyst, and the mole ratio of oil: methanol 1: 6.Keywords: Biodiesel, Transesterification, Blood clam shells, Heterogeneous base catalystReceived: 29 September 2019; Accepted: 2 December 2019; Published: 15 January 2020