bluuebunny/crossref_metadata_2025 huggingface dataset:
Substantiation of technology for obtaining capsules of a multi-component drug with neurotropic action
Authors: Almakaiev Maksym , Sidenko Larysa
Published: March 2021

The aim of the work. Theoretical and experimental substantiation of a rational technology for obtaining a preparation in the form of capsules based on uridine-5-monophosphate of disodium salt, cytidine-5-monophosphate of disodium salt, vitamin B6, thioctic acid and magnesium lactate dihydrate, determination of process parameters that can affect critical quality characteristics active pharmaceutical ingredients in the product and establishing acceptance criteria for each critical process parameter to be used in batch production and process control.
Materials and methods. Objects of the research: masses for encapsulation, granulates and the finished product - capsules with the conventional name “Neuronucleos”. To obtain capsules, active pharmaceutical ingredients (API) were used: uridine-5-monophosphate disodium salt and cytidine-5-monophosphate disodium salt (Shanghai Oripharm Co. Ltd., China), thioctic acid (Shanghai Modern Pharmaceutical Co., Ltd..”, China), pyridoxine hydrochloride (“DSM Nutritional Products GmbH”, Germany), magnesium lactate (“Moes Cantabra S.L.”, Spain). The quality indicators were studied: description, average mass of content and uniformity of mass, uniformity of dosage units, dissolution, accompanying impurities, quantitative content of API. Methods of liquid chromatography and complexometric titration were used.
Results. It has been established that the use of the direct mixing method does not allow obtaining a mass for encapsulation corresponding to the indicator "Bulk density". The use of the wet granulation method in a fluidized bed has been substantiated. It has been shown that it is difficult to perform granulation in a fluidized bed of an API mixture containing thioctic acid. It has been established that it is rational to obtain a mass for encapsulation in two stages: obtaining a granulate from magnesium lactate dihydrate and pyridoxine hydrochloride with a moisturizer solution (sorbitol + uridine-5-monophosphate disodium salt + cytidine-5-monophosphate disodium salt) and then obtaining a mass for encapsulation from granulate, thioctic acid, anhydrous colloidal silicon dioxide and magnesium stearate by the direct mixing method.
Conclusions. On the basis of the performed technological research and analysis of the quality of the obtained capsules, a method for obtaining a capsule mass using the method of wet granulation in a fluidized bed was chosen. The granulation mode was substantiated and the optimal parameters for obtaining a high-quality product were selected, the acceptance criteria for each critical parameter of the technological process were established
Development of the method for estimating complex formation using the electrochemical impedance spectroscopy on the example of the doxycycline and iron (III) interaction
Authors: Dobrova Anna , Antonenko Yevhenii , Golovchenko Olga , Harna Natalia , Garna Svitlana , Georgiyants Victoriya
Published: March 2021

The aim. To develop an EIS method for study the interaction between medicinal products and metal salts on the example of the Doxycycline and iron (III) interaction.
Materials and methods. Measurements of the total impedance of the studied solutions have been performed using a vector circuit analyzer ZNB40 (Rohde & Schwarz, Germany). The calculations of electrical models were performed using the software package EC-Lab V10.40. Measurement cell was made of Teflon, 1 ml of volume, had 2 parallel nickel plated steel electrodes with diameter 6 mm, distance between electrodes is 9 mm. Basic electrical elements of model circuit were calculated according to type of electrochemical process that were described by Nyquist plot (RW, Rct, RS, Cd, CS etc.). Solutions were prepared immediately before the measurement. Measurements were performed at a temperature of 296±3 K. 6 control solutions of doxycycline and 6 control solutions of iron (III) chloride were prepared and measured. 11 study solutions at a molar ratio 1:6, 1:5, 1:4, 1:3, 1:2, 1:1, 2:1, 3:1, 4:1, 5:1, 6:1 were prepared and measured. Concentration of the solutions was X∙10-3 mol/L respectively.
Results. EIS analysis of Nyquist curves of study solutions in the range of molar ratios 1: 6, 1: 5, 1: 4, 1: 3, 1: 2, 1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 6: 1 showed a change in the dynamics of electrical resistance at a ratio of 1:1. In the aqueous solution at T = 296±3 K the constant formation of the solution of doxycycline hyclate and iron (III) chloride is 2.9. This value of the complexation constant indicates that doxycycline hyclate forms a stable metal-ligand complex with iron (III) ions.
Conclusions. EIS method can be applied to study the interaction of medicinal products. Model of this study was created on the example of doxycycline hyclate and iron (III) chloride. Metal-ion complexation of these two molecules was once again confirmed by using the EIS method
Research of the choice of the basis of a semi-solid medicine with a semi-solid extract of Feverfew (Tanacetum parthenium)
Authors: Velia Mariia , Ruban Olena , Khalavka Maryna , Hohlova Larisa
Published: March 2021

The aim. To conduct the research on the choice of the basis for a mild drug with a semi-solid extract of feverfew for use in dermatology.
Materials and methods. In the study of the solubility of a semi-solid extract of feverfew (SSFE) used the method of optical microscopy using a laboratory microscope “Konus Academy”. Determination of pH and homogeneity of the studied samples was performed according to the methods described in SPhU, Vol.1. The bioavailability of the model samples was investigated by diffusion in 3 % agar gel. Colloidal stability and thermal stability were determined according to the methods of GOST 29188.3-91. Measurements of rheological parameters were performed on a rotary viscometer “MYR 3000 V 2R” (Viskotech, Spain). Determination of particle distribution was performed using a laser diffraction analyzer of particle size Mastersizer 3000.
Results. The best results in determining the organoleptic properties, stability and degree of release of biologically active substances (BAS) showed samples prepared on emulgel and gel bases. Structural and mechanical parameters of the samples on these bases proved the presence of a non-Newtonian type of flow with plastic and thixotropic properties. When determining the distribution of SSFE particles by optical diffraction, their smaller size was determined in the sample on an emulgel basis in comparison with the gel.
Conclusions. Emulgel loaded with specific drugs has been found effective in some topical disorders, and it is emerging as potential drug delivery system in the area of dermatology. Since emu-lgel shows enhanced spreadability, adhesion, viscosity and extrusion. Based on the obtained results, an emulsion gel base was chosen as a carrier for a semi-solid drug with SSFE
Comparative study of phenolic compounds of the herb of Betonica L. genus species of flora of Ukraine
Authors: Sas Iryna , Hrytsyk Andrii , Koliadzhyn Taras , Koshovyi Oleh
Published: March 2021

Species of Betonica L. genus are widespread in Ukraine and contain different groups of biologically active substances: hydroxycinnamic acids, flavonoids, tannins, iridoids, terpenoids, steroids, essential oil, organic acids, vitamin K, nitrogen-containing compounds, phenylethanoid glycosides. Species of Betonica L. genus show a wide range of pharmacological activity (anti-inflammatory, antioxidant, choleretic, diuretic, sedative, antitumor, antihypertensive, etc.) and phenolic compounds are one of the most important and promising groups of biologically active substances of these plants.
The aim. The aim of the work was to conduct a comparative study of the phenolic compounds of the herb of Betonica L. genus species of flora of Ukraine.
Materials and methods. The object of the study was the herb of Betonica peraucta and Betonica brachydonta harvested in the phase of mass flowering of the plant in Ivano-Frankivsk region. The study of phenolic compounds was carried out by paper chromatography, HPLC and spectrophotometry.
Results. 7 components of tannins, 4 flavonoids, 5 hydroxycinnamic acids, 2 coumarins were identified and quantified by HPLC in the studied raw material. The quantitative content of the main groups of phenolic compounds in the herb of Betonica peraucta and Betonica brachydonta was determined by the method of absorption spectrophotometry: polyphenols – 5.96 % and 4.82 %, tannins – 1.62 % and 0.68 %, flavonoids – 2.07 % and 1.13 %, hydroxycinnamic acids – 7.01 % and 3.58 %, respectively.
Conclusions. As a result of the conducted studies it was found that the content of phenolic compounds in the herb of Betonica peraucta is significantly higher than in the herb of Betonica brachydonta. Therefore, this species is promising for further research and creation of new drugs
Interference factors of teacher development in the Magelang district, Indonesia
Authors: Mayesthi Firstia , Wibowo Udik Budi , Widarso Sugeng
Published: March 2021

This study aims to analyze the factors inhibiting the promotion of teachers in Candimulyo sub-district, Magelang regency. The research approach used is quantitative methods. Respondents who participated in this study were 116 people. The analysis used is multiple regression test. The results showed that the age factor has a probability of 0.000 and the convenience factor (comfort) has a probability of 0.036 and has a significant effect on the difficulty in advancing according to the respondents in this study. Meanwhile, the factors of regulation, motivation, and education do not significantly influence the difficulty of promotion for teachers.
Requirements for the value component in professional training of foreign language linguists in the age of changing axiological guidelines
Authors: Svyshch Liliia
Published: March 2021

The change in axiological guidelines in the current social and cultural situation makes the problem of preserving individuality, particularly values, extremely relevant. Value education is an effective means of solving this problem. The modern professional training of future foreign language linguists cannot ignore the need to turn to axiological discourse and to ensure acquiring axiological competencies. Recognition of the influence of such axiological guidelines changes on the educational environment leads to addressing the value theory, that is axiology, and determines the need to gain axiological dimension within the educational process.
The purpose of the study is to determine the substantive requirements for the value component in the professional training of future linguists regarding changing axiological guidelines. The validity of the formulated provisions and conclusions is ensured by the involvement of acts, regulating the training of future specialists in foreign philology both in Ukraine and in European countries and the use of developments in the field of philosophy of education, modern axiological and pedagogical knowledge.
Based on the analysis, it is substantiated, that the result of professional training of foreign languages linguists should lie in the involvement and assimilation of (1) knowledge values, (2) teacher’s identity values, (3) interrelation values in education. The outlined system of values correlates with the requirements of the Common European Framework (as it regulates the development of the future specialist of the corresponding linguistic base with all possible professional competencies)
The model of praxeological competence formation in future masters of dentistry
Authors: Skrypnyk Iryna , Kulbashna Yaroslava
Published: March 2021

The article elucidates the significance of future dentists’ practical training. It has been established, that the great attention of available foreign scientific sources is paid to the issue of improving the dental educational content based on the competence approach; nevertheless, modeling of educational process’ components has not been considered so far.
The importance of modeling, as a method of educational process’ studying components, has been determined. The authors’ model of praxeological competence formation of future master of dentistry is presented. It consists of the basic components, which are determined as interconnected blocks: the target one declares the goal and defines the tasks necessary for its achievement; theoretical-methodological block reveals the praxeological competence structure (motivation, gnostic, activity, deontic, scientific-research, reflexive components), basic approaches (competence, system, personal, activity, synergetic, context), principles (subsequence, transparency, evidence-based, scientificity, rationality, creativity, effectiveness) and ways for achieving the aim based on the updated normative base of dental education (branch educational standard of the specialty “Dentistry”, EQC, EPP, elaborated on its base and with the use of necessary pedagogical conditions); the content-procedural block determines the ways of pedagogical conditions realization based on the updated content of dental education of interdisciplinary integration of basic and professional subjects, improvement of methodological instruments (classroom work, projects, self-study work, individual, distant forms; traditional, innovative, interactive methods; means of simulation, under clinic conditions, portfolio), resulting-reflexive block reflects and fixes the levels of future masters’ of dentistry praxeological competence formation according to its components and is based on correspondent criteria and indicators, gives a possibility to ascertain an obtained educational result according to defined levels (minimal and sufficient).
The model shows the researched process as an integral system that gives a possibility to correct the future masters’ of dentistry professional training according to the influence of internal and external factors on the educational process; to determine vectors of its evolution in the context of competence approach introduction into dental education
Features of blood`s microcirculation at physical loads
Authors: Stanishevska Tetana , Gorna Оksana , Horban Daria , Yusupova Olga
Published: March 2021

This research deals with the study of blood microcirculation peculiarities.Materials and methods. 72 students of Bogdan Khmelnytsky Melitopol State Pedagogical University, aged 18–19, were examined. The experimental research consisted of the study of blood microcirculation functional state by means of Laser Doppler flowmetry (LDF) method. It helped to evaluate the state of tissue blood-circulation and to detect individual-typological peculiarities of blood microcirculation under the influence of physical activity (before and after exercise).Results. Three types of blood microcirculation were identified by using LDF-metry. The normoemic type of blood microcirculation, characterized by the superposition of oscillatory rhythms and reflected the balance of the mechanisms of regulation of microcirculation. The hyperemic type, characterized by a «monotonous» LDF-gram with a high parameter of microcirculation, which reflects the relative predominance of metabolic mechanisms in the regulation of microcirculation. The hypoemic type, characterized by a «monotonous» LDF-gram with a low parameter of the microcirculation parameter, which reflects the decrease of vasomotor mechanisms in the regulation of microcirculation. According to the LDF-metric data, the examined students under intensive physical activity have a significant increase in microcirculatory status: by 6 % of the microcirculation parameter, by 28 % of the mean square deviation and by 45 % of the initial value of the coefficient of variation.Conclusions. This dynamics of microcirculation shows that under the influence of physical exertion, a person creates significant functional reserves for the redistribution of blood flow and for more perfect intraorgan capillary blood flow. It was found, that in the process of physical activity, morpho-functional rearrangements of the human cardiovascular system occur. This reaction is formed by several components of blood microcirculation: blood flow in the transport direction, regulating blood supply in accordance with the needs of tissues and the exchange component of the histochemical barrier
Justification of the methodological bases for the management of the radio resource of special purpose radio communication systems under conditions of prior uncertainty
Authors: Shyshatskyi Andrii , Melnyk Artur , Bondar Oleksii , Petruk Oleksandr , Chernyahivskiy Dmytro , Kryvenko Mykola , Petrov Oleksandr , Kravchuk Serhii , Shidlovsky Yuriy , Lukianets Volodymyr
Published: March 2021

The problem of substantiation of methodological bases of radio resource management of military radio communication systems in the conditions of a priori uncertainty is solved in the work. The object of research is the military radio communication system. One of the most problematic places in the management of military radio resources is the inability to carry out a hierarchical management of the parameters and modes of operation of both individual radios and the military radio system as a whole. This reduces the efficiency of the system itself and the efficiency of its application.
The scientific problem is solved by substantiating the methodological principles of radio resource management of military radio communication systems in conditions of a priori uncertainty. During the research, the authors used the main provisions of the theory of queuing, the theory of automation, the theory of complex technical systems, as well as general scientific methods of cognition, namely analysis and synthesis. The novelty is that in the course of work:
– the purpose of functioning of an operative management subsystem of a radio resource of military radio communication systems is formulated;
– indicators and criteria of functioning efficiency of military radio communication systems are determined;
– decomposition of the solution of this problem into problems depending on the signal and noise situation is carried out.
An approach based on the hierarchical decomposition of the functional structure of networks, the behavior of which is described by stochastic differential (or difference) equations of the high dimension state, into a number of interconnected but simpler functional structures is used for the functional description of military radio communication systems. It will allow to make a decomposition of the state of the military radio system and increase the efficiency of decision-making on adjusting the modes of operation and parameters of the military radio system in real time. The research results should be used at the stage of operational management of parameters and modes of these systems operation.
Cybersecurity regulation: cybersecurity certification of operational technologies
Authors: Tsvilii Olena
Published: March 2021

The object of research is the system and schemes of conformity assessment (certification) of cybersecurity of operational technologies (OT), as a set of rules and procedures that describe the objects of certification, determine the specified requirements and provide a methodology for certification. The terminological base and conceptual apparatus of the study of cybersecurity certification of operational technologies are based on the international standard ISO 17000:2020 Conformity assessment – Vocabulary and general principles. Cybersecurity certification systems and schemes are based on assessment standards, the choice and application of which is not unambiguous and historically has many interpretations and application mechanisms. These standards consist of tools, policies, security concepts, security assurances, guidelines, risk management approaches, best practices, safeguards, and technologies. But they have, to one degree or another, a significant drawback – the complexity of transforming the results of information security assessment according to these standards into security guarantees with any wide international recognition. In the context of globalization, this significantly degrades the cybersecurity quality.
The main hypothesis of research is that the cybersecurity quality can be improved by converging towards a common methodology that is based on agreed international standards and international best practice for certification. The question of the key role of cybersecurity for operational technologies, which become the basis for Economy 4.0 and are now considered as a new frontier of cybersecurity, is considered. The need to create a system and schemes for certification of OT cybersecurity based on international and European certification principles is shown. A hierarchical model of cybersecurity certification system assessment standards and a hierarchical model of agreements on mutual recognition of cybersecurity certificates have been developed, which will allow a systematic approach to the creation of a system and schemes for OT cybersecurity certification. This provides an opportunity for developers of systems and certification schemes to form OT cybersecurity certification systems based on the principles of wide cross-border recognition of OT cybersecurity certificates.
Modelling the project transport support optimal option
Authors: Rusanova Svitlana , Piterska Varvara , Onyshchenko Svitlana
Published: March 2021

The object of research is the processes of planning transport provision of projects. The vast majority of projects involve the creation of tangible objects as a product. The implementation of such projects is associated with the use of various types of materials and equipment, which necessitates transport services for the functioning of the project logistics system. Vehicles with different characteristics can be used to solve the same transportation problems. Also, for large-scale infrastructure projects, rental of vehicles is often used for the duration of the project. This allows, on the one hand, to save on transportation costs, on the other hand, to gain complete control over the transportation processes in the project.
As a research result, an optimization model has been developed for determining the option of transport support for the project. The variant of transport support of the project is understood as a set of combinations of types and types of vehicles, their characteristics and conditions of use in the project for the work of the project that provide for transport services. Acquisition, lease or transport services from the project suppliers are considered as conditions for the use of vehicles in the project.
The optimization criterion is the cost of transport support, taking into account their possible increase, as well as the potential risks of losses associated with the failure to complete the work. Constraints take into account costs, time to receive a project product, and availability of transportation options.
Experimental calculations, a fragment of which is presented in the research, demonstrated the efficiency of the developed model, its adequacy and reliability of the results obtained with its help.
The area of practical use of the model is making decisions about transportation at the stage of project planning. The model allows for «what-if» experiments, which reflect various scenarios that are possible in the transportation of the project. And this, in turn, allows at the stage of project planning to assess the possible risks associated with transportation, and to establish their impact on the project as a whole.
Optimization of infrastructure projects parameters in the program
Authors: Vereshchaka Mykolay
Published: March 2021

The object of research is infrastructure projects as part of the program. The products of infrastructure projects are various infrastructural objects that together provide a certain value for stakeholders, for example, a certain bandwidth of the transport network or the capacity of a port, channel, etc. Identification of the parameters of project products is carried out at the stage of program development. For most projects, these parameters allow for variability within certain limits. The interconnection of infrastructure projects is determined not only by general financing and management, but, above all, by the consistency of the properties of goods. Therefore, the optimization of the parameters of the products of such projects is carried out integrally, within a single model. Coordination of the parameters of the products of infrastructure projects as part of the program requires formalized methods that allow them to be optimized taking into account both local constraints for each project and the global conditions for implementing the program. As a result of the study, a concept has been formed and an appropriate model has been developed, which allows setting the optimal parameters of the products of infrastructure projects as part of the program. Modeling is based on the ability to vary the parameters of project products and their relationship with the characteristics of projects and the program as a whole, such as value, costs, and the magnitude of risks. Since the program and the projects included in it can be of a non-commercial nature, therefore, the main criterion of optimality for the parameters of the products of projects and programs is a universal category – value, and it is considered for all stakeholders. The use of this model in the development of the program and the infrastructure projects included in it ensures the optimization of the required result while meeting certain requirements and limiting conditions. The model belongs to the class of nonlinear models and is developed for a situation where a so-called «main» project (or their combination) can be distinguished, which form(s) the requirements for the products of other projects interconnected with it, which is typical for infrastructure programs.
The researching of information inequality in the market of information services
Authors: Kondratenko Natalia
Published: March 2021

The object of research is information inequality. Information inequality is seen as a socio-economic problem that can be solved with the help of confident actions of the state. Data analysis confirmed the problem of the «digital divide» at the global and regional levels. The transformation of the information services market depends on the quality of the Internet. The growing number of Internet users is a global tendency, but at the regional level it is possible to see clear differences, which creates problems for obtaining quality educational, financial and professional services. Both negative and positive consequences of information inequality are considered. Along with the growing importance of modern information technologies and services in society, inequality between certain segments of the population is growing. Some people for various reasons may have restrictions on access to information, knowledge, information services, new digital products and modern technologies, while others may not have similar restrictions on access to them.
The study found that the market for information services is specific in terms of protection of intellectual property rights. Aspects that would contribute to strengthening the protection of intellectual property rights to information services and products, information security are provided. Negative transactional externalities occur in the market of information services precisely when there is a decrease in information security due to violation of intellectual property rights by one person in relation to another, causing the last damage. To reduce the burden of transaction costs on market participants in information services, the directions of reducing transaction costs at the national level are substantiated. In all countries of the world, the COVID-19 pandemic has exacerbated the issue of information inequality. The study presents the principles for overcoming digital inequality.
An Asynchronous University Distance Course as a Possible Model for International Online Collaboration
Authors: Титаренко Лариса Григорьевна , Литтл Крейг Б.
Published: March 2021

A reassessment and discussion of distance education (DE) in the higher education is crucial in a situation when many students over the world have become e-learners and several international exchange programs were suspended. Our study is related to international online collaboration in a sociology course where university students from four countries participated. We created an innovative design for an international online course and successfully ran it for about 15 years. The research addresses what the key factors are in order to make an international distance course a useful practice case, and how these factors contribute to the effectiveness of such a course and the level of students’ satisfaction. On the basis of our long-term collaboration, we identified the key factors that stimulated the high level of student involvement in online dialogue and the high level of satisfaction. The article argues that online asynchronous technology and online dialogue in the form of student-led discussions (SLD) organized for regular interaction among students and between students and lecturers are key factors in the course’s success. An additional factor is the regular motivation of the students by the teachers in the form of technical and pedagogical support. The model discussed in this article takes into account all these factors. Its effectiveness is confirmed by the students' level of satisfaction with our class and the high level of student engagement. It enables students from different countries to equally communicate online and freely exchange ideas among themselves and with the teachers. Student-oriented teaching methods and the careful design of the course were also significant for success. The article concludes that an asynchronous e-learning university course emphasizing students’ regular participation in discussion forums can be a useful model for international collaboration where students from different countries are involved.
Оруэлл: честное слово в эпоху идеологических конфликтов
Authors: Черныш Михаил Федорович
Published: March 2021

В России английского писателя Джорджа Оруэлла знают прежде всего как острого критика советского тоталитарного режима, автора романа «1984» и сатирической комедии «Скотный двор». Однако литературное наследие Дж. Оруэлла, его политическое послание не исчерпывается этими двумя произведениями. Джордж Оруэлл придерживался социалистических убеждений, выступал как противник колониальной политики Великобритании, сражался против фашизма в Испании, где получил тяжелое ранение. Его антитоталитарная позиция не имела конкретной географической адресации, тоталитарные практики он рассматривал как развитие отношений неравенства, эволюцию практик господства, которые рождает капиталистическое общество. В любых обстоятельствах Дж. Оруэлл стремился сохранять за собой право иметь независимую точку зрения на происходящее, поддержать позицию справедливости.
Траектории развития регионализма в России: опыт Свердловской области и Республики Татарстан
Authors: Витковская Татьяна Борисовна , Назукина Мария Викторовна
Published: March 2021

В статье анализируются траектории развития регионализма в российских регионах в период с 1990-х годов, когда регионализация шла наиболее активно, по настоящее время, когда регионализм стал ослабевать. Представлен анализ динамики и современных форм регионализма в двух российских регионах – Республике Татарстан и Свердловской области. Отдельное внимание уделено регионалистским движениям (организациям, партиям) в указанных регионах как акторам, артикулирующим регионализм. Анализируются стратегии региональных элит, поскольку паттерны их взаимодействия с регионалистскими организациями предполагают разные конфигурации, обуславливающие различные траектории динамики регионализма в России. Разграничиваются регионализм «снизу» как активность регионалистских организаций, и регионализм «сверху» как политика региональных элит. Доказано, что соотношение данных измерений в пределах региона оказывает влияние на формирование региональной модели. В статье представлены результаты эмпирического исследования, проведенного в Республике Татарстан и Свердловской области в 2019 году, продемонстрировавшего, как были сформированы модели элитарного регионализма в Республике Татарстан и латентного регионализма в Свердловской области. Показаны различные траектории динамики регионализма – его элитизация в Республике Татарстан и маргинализация в Свердловской области.
PERLİT KULLANIMI İLE ODUN PLASTİK KOMPOZİTLERİN FİZİKSEL, MEKANİK VE YÜZEY ÖZELLİKLERİNDEKİ DEĞİŞİMLERİN BELİRLENMESİ
Authors: ÖZDEMİR Ferhat
Published: March 2021

Bu çalışmada odun plastik kompozit üretiminde, perlit kullanımının etkisi araştırılacaktır. Bu amaçla odun unu, polipropilen ve farklı oranlarda perlit karışımı elde edilmiştir. Odun-plastik kompozit (OPK) malzemelerin üretimi doğrudan pres yöntemi kullanılarak gerçekleştirilmiştir. Üretilen OPK kompozit malzemelere ait test numunelerinin fiziksel, mekanik ve yüzey özellikleri belirlenmiştir. İlgili standartlara bağlı kalınarak OPK levhaların fiziksel (su alma ve kalınlık şişme), mekanik (eğilme direnci, eğilmede elastikiyet modülü ve şok direnci) ve yüzey pürüzlülüğü testleri yapılmıştır. Sonuç olarak perlit ilave edilerek üretilen OPK malzemenin perlit ilave oranının artmasına bağlı olarak fiziksel, mekanik ve yüzey pürüzlülüğü özelliklerin belirli oranlarda olumsuz etkilendiği belirlenmiştir.
Comparative study of follicular unit yield in elliptical versus trapezoid donor strip in hair transplantation
Authors: Somaiah Savitha A. , Balakrishnan Nirmal , Sarvajnamurthy Sacchidanand
Published: March 2021

Background: Hair transplantation is a surgical method of management of hair loss. The classical method involves harvesting an elliptical strip from the donor area and dissection follicular units, which are then implanted into the recipient area. A modification of elliptical strip is trapezoid strip, where the ends are tapered to a trapezoid to reduce the transection of follicles.

Methods: 12 male patients with androgenetic alopecia undergoing hair transplantation by strip method were included in the study. One cm strip was harvested from the donor area in all the patients. One end of the strip was designed elliptical and the other end was trapezoid. The ends were dissected and follicular grafts were counted.

Results: The trapezoid end of strip yielded more follicular units in 10 out of 12 cases (83.3%), one was equal and in one case the elliptical end had a greater yield.

Conclusions: Transection of follicular units in the ends of donor strip can be minimized by 30-40% by harvesting a trapezoid strip. The grafts harvested were 28.3% more in the trapezoid end of the strip than the elliptical end.
FPGA-based Visible Light Communication System for Real-Time File Transmission
Authors: Fuada Syifaul , Aji Saputro Rosmianto
Published: March 2021

The digital image, character/texts, audio (music), and video are the multimedia contents commonly used as objects to be transmitted on the VLC system. This paper has performed the real-time file transfer successfully using VLC technology with a UART connection. The FPGA was chosen as a DSP due to its capability in clocked-speed. We used an Ethernet connection due to its easy configuration and ability to meet the high-speed communication requirement. It was used for communicating between the host and the client device computer. This work covers the MAC layer implementation, SoC FPGA for UART connection, and analog front-end (AFE) transceiver. According to the functional test, the achieved bandwidth of the Ethernet connection is about 83.6 Mbps. However, the FPGA’s clock is set at 100 kHz only due to the transferred file does not require a high speed. Thus, the physical layer baud rate is fixed to 11520 bps; it can be used for real-time transfer of a digital image with 512 pixels with no compressed file and error at 22 cm of optical LoS channel (no lenses).
Proposal of the Reworking Station Model using Plant Simulation
Authors: Daneshjo Naqib , Malega Peter
Published: March 2021

This paper deals with the proposal of the reworking station in the automotive company. The paper consists of four parts. The first part is about Tecnomatix Plant Simulation, which is now one of the best software for simulation tasks. The second part deals with analysis of real production process in the selected company and some parts are also dedicated to the main product – external handle. The third part treats with simulation of production process in Plant Simulation in selected company and the final fourth part is oriented on proposal of the reworking station in Plant Simulation.
COVID-19: A Hypothesis to Prevent SARS-CoV-2 From Entering Respiratory Cells
Authors: Ashrafizadeh Hadis , Oroojan Ali Akbar
Published: March 2021

The article's abstract is not available.
El enojo desde la perspectiva de un grupo de niÃ±os y niÃ±as mexicanos
Authors: Ortega-Andrade Norma AngÃ©lica , Viramontes-MartÃ­nez Linda MarÃ­a , JimÃ©nez-RodrÃ­guez David
Published: March 2021

Este estudio tuvo como objetivo explorar las diferentes vivencias que los niÃ±os experimentan en torno a la emociÃ³n del enojo y analizar los factores que lo predisponen, asÃ­ como las acciones que lleva a cabo para regular esta emociÃ³n. El estudio es cualitativo bajo un enfoque fenomenolÃ³gico. Participaron un total de 34 niÃ±os y niÃ±as de 9 a 12 aÃ±os de los cuales 16 (47%) de ellos fueron niÃ±os y 18 (53%) fueron niÃ±as. El muestreo fue noprobabilÃ­stico por conveniencia. La tÃ©cnica para recolectar los datos fue un cuestionario conformado por nueve preguntas, que refiere a las cogniciones, conductas y sentimientos con respecto al enojo, el cual se aplicÃ³ en pequeÃ±os grupos conformados por 4 niÃ±os y/o niÃ±as. Los resultados muestran que desde la perspectiva de los niÃ±os el enojo es sentirse irritado, expresarlo con gestos o respuestas agresivas, y la forma de regular su enojo es tratando de tranquilizarse o bien buscar una soluciÃ³n. Se concluye que las respuestas de los niÃ±os son mÃ¡s reactivas que anticipatorias.
 
This study aimed to explore the different experiences that children experience around the emotion of anger and to analyze the factors that predispose it, as well as the actions carried out to regulate this emotion. The study is qualitative under a phenomenological approach. A total of 34 boys and girls between the ages of 9 and 12 participated, of which 16 (47%) of them were boys and 18 (53%) were girls. The sampling was non-probabilistic for convenience. The technique to collect the data was a questionnaire made up of nine questions, which refers to cognitions, behaviors and feelings regarding anger, which was applied in small groups made up of 4 boys and / or girls. The results show that, from the children's perspective, anger is feeling irritated, expressing it with gestures or aggressive responses, and the way to regulate their anger is by trying to calm down or find a solution. It is concluded that the children's responses are more reactive than anticipatory.
Lâ€™instrumentalisation politique de lâ€™ethnicitÃ© dans le champ religieux au Nord-Cameroun
Authors: Assana Assana
Published: March 2021

Ce texte analyse lâ€™articulation de la politique et lâ€™ethnicitÃ© dans le champ religieux au Nord-Cameroun. Il part dâ€™un ancrage historique de lâ€™instrumentalisation de lâ€™ethnicitÃ©, consacrÃ© par les missionnaires, et consolidÃ© par les entrepreneurs ethniques, pour saisir les enjeux contemporains des mouvements de conversion ethnico-religieuse. Dâ€™un point de vue mÃ©thodologique, cette analyse sâ€™appuie sur la thÃ©orie de la gouvernementalitÃ© de Michel Foucault et les donnÃ©es empiriques recueillies par les sources documentaires, les entretiens et lâ€™observation directe auprÃ¨s des responsables des confessions religieuses fortement reprÃ©sentÃ©es dans cette partie du Cameroun (lâ€™Ã‰glise catholique, les Ã‰glises protestantes et lâ€™Islam). Cette contribution vise Ã  objectiver le champ religieux comme un cadre de construction des relations de pouvoir ethniques, permettant lâ€™expression de lâ€™intelligence stratÃ©gique et des pratiques de rÃ©sistance.
 
This text analyzes the articulation of politics and ethnicity in the religious field in North Cameroon. It starts from a historical anchoring of this instrumentalization of ethnicity, consecrated by missionaries, and consolidated by ethnic entrepreneurs, to grasp the contemporary challenges of the movements of ethnic-religious conversion. From a methodological point of view, this analysis is based on Michel Foucaultâ€™s theory of governmentality and empirical data collected by documentary sources, interviews and direct observation with leaders of religious denominations represented in this part of Cameroon (the Catholic Church, the protestant churches and Islam). This contribution aims to objectify the religious field as a framework for building ethnic power relations, allowing the expression of strategic intelligence and resistance practices.
DÃ©termination Du RÃ©gime Alimentaire De La Girafe dâ€™Afrique De lâ€™Ouest (Giraffa Camelopardalis Peralta Linnaeus 1758) En Saison SÃ¨che Dans Les Zones ExcentrÃ©es De Fandou, Dingazi-Banda Et Simiri Au Niger
Authors: O. Hamadou , A. Amadou Oumani , B. Morou , A. Mahamane
Published: March 2021

La girafe du Niger (Giraffa camelopardalis peralta), est une espÃ¨ce relique bÃ©nÃ©ficiant depuis plusieurs dÃ©cennies dâ€™une protection intÃ©grale et cohabite de maniÃ¨re assez harmonieuse avec les humains. Ces derniÃ¨res annÃ©es, les girafes colonisent progressivement de nouveaux habitats et peu dâ€™informations sont connues sur le rÃ©gime alimentaire dans les nouvelles zones. La determination du rÃ©gime alimentaire de la girafe en saison sÃ¨che dans les zones excentrÃ©es de Fandou, Dingazi-banda et Simiri, a pour objectif dâ€™identifier les espÃ¨ces vÃ©gÃ©tales, les plus recherchÃ©es par la girafe pour une gestion durable de lâ€™espÃ¨ce au Niger. Trois (3) mÃ©thodes Ã  savoir lâ€™observation directe, lâ€™indice dâ€™abroutissement et lâ€™analyse microscopique des crottes ont Ã©tÃ© utilisÃ©es. Il ressort de cette Ã©tude, que 23 espÃ¨ces vÃ©gÃ©tales appartenant Ã  10 familles sont consommÃ©es par la girafe du Niger. Vigna anguculata a Ã©tÃ© retrouvÃ© Ã  travers les indices dâ€™abroutissement. Les femelles ont un spectre alimentaire plus large (19 espÃ¨ces vÃ©gÃ©tales) que les mÃ¢les (16 espÃ¨ces vÃ©gÃ©tales). Les espÃ¨ces vÃ©gÃ©tales, les plus consommÃ©es sont Combretum glutinosum (15,60%), Balanites aegyptiaca (11,60%) et Faidherbia albida (37,60%). Le broutage de Mitragyna inermis nâ€™est pas observÃ© chez les mÃ¢les. Maerua crassifolia et Ziziphus mauritiana, prÃ©sentant des indices dâ€™abroutissement Ã©levÃ©s, sont moins broutÃ©es par la girafe. La faible frÃ©quence de la girafe sur certaines espÃ¨ces vÃ©gÃ©tales nâ€™est que la consÃ©quence de sa disponibilitÃ© dans lâ€™habitat.
 
The Niger giraffe (Giraffa camelopardalis peralta), is a replicant species that has enjoyed full protection for several decades and cohabits quite harmoniously with humans. In recent years, giraffes have gradually colonized new habitats and little is known about the diet in the new areas. Determining the giraffe's diet during the dry season in the outlying areas of Fandou, Dingazi-banda and Simiri, aims to identify the plant species most sought after by the giraffe for sustainable management of the species in Niger. Three (3) methods, namely direct observation, browsing index and microscopic analysis of droppings were used. This study shows that 23 plant species belonging to 10 families are consumed by the Niger giraffe. Vigna anguculata was found through the browsing indices. Females have a wider food spectrum (19 plant species) than males (16 plant species). The most consumed plant species are Combretum glutinosum (15.60%), Balanites aegyptiaca (11.60%) and Faidherbia albida (37.60%). Grazing of Mitragyna inermis is not observed in males. Maerua crassifolia and Ziziphus mauritiana, with high browsing indices, are less browsed by giraffe. The giraffe's low frequency on certain plant species is only a consequence of its availability in the habitat.
Optimisation De La Stabilisation Physique Du Lait De Coco En Utilisant La Gomme De Cajou (Anacardium occidentale L.) Comme Agent Stabilisant
Authors: Soro PÃ©gnonsienrÃ¨ Lacina , TourÃ© Naka , KonÃ© Fankroma Martial Thierry , Kouadio Marcellin Konan , DjÃ¨ Kouakou Martin , DabonnÃ© Soumaila
Published: March 2021

Le lait de coco est essentiellement une Ã©mulsion huile dans eau, stabilisÃ©e par les protÃ©ines naturelles et les phospholipides prÃ©sents dans la pulpe. Cependant, le lait de coco reste physiquement instable et sujet Ã  une sÃ©paration de phase. Dâ€™oÃ¹ la nÃ©cessitÃ© dâ€™utiliser des agents stabilisants. Cette Ã©tude avait pour objectif de dÃ©terminer les conditions optimales de stabilisation du lait de coco en utilisant la gomme de cajou comme agent stabilisant, par la mÃ©thodologie des surfaces de rÃ©ponse utilisant un plan factoriel complet 32. Ainsi, les effets de la concentration en gomme de cajou et du ratio pulpes/eau sur les paramÃ¨tres physico-chimiques du lait de coco tels que lâ€™indice de crÃ©mage, lâ€™indice de taille des gouttelettes, la viscositÃ© et le taux de perte de turbiditÃ© ont Ã©tÃ© Ã©valuÃ©s. Les rÃ©sultats de lâ€™analyse ont indiquÃ© que les conditions optimales Ã©taient de 1,50 % pour la concentration en gomme de cajou et de 1/1 (g/mL) pour le ratio pulpes/eau. Les rÃ©ponses optimales enregistrÃ©es ont Ã©tÃ© de 60,239 % ; 0,716 ; 0,076 mPa.s et de 0,824 Ã…/jr respectivement pour lâ€™indice de crÃ©mage, lâ€™indice de taille des gouttelettes, la viscositÃ© et le taux de perte de turbiditÃ©. Par ailleurs, aucune diffÃ©rence significative (p> 0,05) nâ€™a Ã©tÃ© observÃ© entre les valeurs expÃ©rimentales et les valeurs prÃ©dites. Les diffÃ©rents modÃ¨les dÃ©veloppÃ©s pour prÃ©dire les diffÃ©rentes caractÃ©ristiques du lait de coco Ã©taient trÃ¨s significatifs, avec des coefficients de dÃ©termination Ã©levÃ©s (>0,95) et des manques dâ€™ajustement non significatifs (p> 0,05). La gomme de cajou porterait donc un fort potentiel dans la stabilisation des Ã©mulsions.