bluuebunny/crossref_metadata_2025 huggingface dataset:
THE HITS AND MISSES OF RUSSIA-AFRICA TIE: A COMPARATIVE ANALYSIS OF SOCIO-ECONOMIC PARTICIPATION
Authors: Oguine Josephine Nchedo
Published: June 2022

Africa is the second-largest and most populous continent globally; in the last decade has witnessed Russian return under Putin’s administration. In this regard, Russia has changed its point of view over Africa to achieve its aim of being one of the global superpowers. Russia today is wealthier and more stable than it was at any point during the 1990s. The research methodology sterns from the review and analysis of several strands of literature. The paper focused on examining the foreign policies of Russia for African states after the new millennium epoch that promoted its swift activities. The paper also fills the existing literature gap in the Russian foreign policy towards African states after the year 2000. It evaluates both countries’ Russian-African strengths, weaknesses, opportunities, and threats in socio-economic engagements. It also reveals that the activities of Russia in Africa gained more ground on the dysfunctional inability of African countries to integrate within normative situations. Lastly, the work recommends unity and African socialism among African countries.
Sustainability Study Of Sugarcane And Sweet Sorghum As Feedstocks For Biotehanol Production
Authors: Sanni Abdulkadeem , Adegboyega Olawale , Yahya Sani
Published: June 2022

Sustainability study of bioethanol production from sugarcane and sweet sorghum was conducted using superPro® Designer and OpenLCA sustainability softwares. The model incorporated the different bioethanol production technologies: pretreatment (sterilization), fermentation and purification. The paper confronted the challenge of fossil fuel derived environmental damages of GHG emission and economic implications of dwindling crude oil prices. This study is aimed at efficient production and consumption of sugarcane and sweet sorghum-based fuel-grade bioethanol with the established economic minimum bioethanol plant capacity of 95 000 m
3/annum.

Based on the economic sustainability indices assessed, the plant using sugarcane had a higher return on investment (ROI) of 26.64% than that utilizing sweet sorghum (18.34%). Their corresponding payback periods were estimated to be 3.75 and 5.5 years respectively. Hence, sugarcane is a more economically viable feedstock for bioethanol production at an annual plant capacity of 95,000 m
3. The environmental assessment conducted on the two feedstocks using life cycle assessment approach in OpenLCA sustainability software showed that the process utilising sugarcane posed lesser environmental burden with higher net energy balance (NEB) of 7.6 but lower net energy renewability (NER) of 50.8. The results of environmental assessment showed that CO
2 emissions in the sugarcane and sweet sorghum processes constituted the highest pollutants emission/discharge costs with about 98% and 98.53% respectively. The lost work analyses of the feedstocks processing showed that distillation columns were the least energy efficient units in both processing plants recording 24.65% and 22.90% for sugarcane and sweet sorghum plants respectively. Although the total lost work in sweet sorghum process (62,506.68kW) was higher than that of sugarcane process (41,581.14kW). Hence, sugarcane is economically and environmentally more sustainable as feedstock for fuel-grade bioethanol production than sweet sorghum.
Sign Language Prediction Model using Convolution Neural Network.
Authors: Ndungi Rebeccah , Karuga Samuel
Published: June 2022

The barrier between the hearing and the deaf communities in Kenya is a major challenge leading to a major gap in the communication sector where the deaf community is left out leading to inequality. The study used primary and secondary data sources to obtain information about this problem, which included online books, articles, conference materials, research reports, and journals on sign language and hand gesture recognition systems. To tackle the problem, CNN was used. Naturally captured hand gesture images were converted into grayscale and used to train a classification model that is able to identify the English alphabets from A-Z.  Then identified letters are used to construct sentences. This will be the first step into breaking the communication barrier and the inequality.  A sign language recognition model will assist in bridging the exchange of information between the deaf and hearing people in Kenya. The model was trained and tested on various matrices where we achieved an accuracy score of a 99% value when run on epoch of 10, the log loss metric returning a value of 0 meaning that it predicts the actual hand gesture images. The AUC and ROC curves achieved a 0.99 value which is excellent.
Supracardiac Total Anomalous Pulmonary Venous Return Repair in a 7-Month-Old Infant
Authors: Planinc Mislav , Malcic Ivan , Anic Darko
Published: June 2022

Total anomalous pulmonary venous return is a congenital heart malformation characterized by anomalous pulmonary venous inflow to the right atrium. Surgical repair typically occurs during the first month of life, and survival beyond that age in untreated patients is unlikely. We report an extreme case of supracardiac total anomalous pulmonary venous return in an infant who survived 7 months despite atypical anomalous inflow without atrial-level communication and with right-to-left shunting only through a patent ductus arteriosus. We stabilized the patient's left-sided heart function before surgically repairing the anomalous venous return 2 months later. Three years postoperatively, the patient was well.
Putting the Embodied Turn in Philosophy to Practice: Luce Irigaray’s Response to Nietzsche’s Philosophy of Embodied Thinking
Authors: Thorgeirsdottir Sigridur
Published: June 2022

Luce Irigaray’s writings on Nietzsche’s philosophy belong to the groundbreaking interpretations of his work and they also confirm the continued relevance of his philosophy. Unlike most male-centric philosophers, Nietzsche not only saw that sexual difference was becoming one of the major philosophical issues of our age. He was also keenly aware of how it permeated our philosophical tradition with its dualistic models, which is one reason for Irigaray’s interest in it, as has been widely discussed in feminist/queer philosophical research into her Nietzsche interpretation. Another common denominator of Nietzsche and Irigaray are their philosophies of the body. Interpreters of Irigaray have pointed out how her conception of embodied, sexuate being calls for a new way of philosophical thinking (Grosz), and Stegmaier interprets the liberation from prejudices we encounter in Nietzsche’s works as a “liberation of philosophy.” How can the liberation of philosophy be understood in the way we practice philosophical thinking? In the following interpretation of Irigaray’s bookThe Marine Lover of Friedrich Nietzsche(1980), I show how it offers a theory and a practice of embodied philosophical thinking, which I will discuss in light of new phenomenological methodologies of embodied thinking (Gendlin, Petitmengin). Irigaray’s interpretation of Nietzsche’s philosophy inMarine Loveris both critical and constructive as apparent in her interpretation of Dionysus and Ariadne. On the one hand, this couple represents for her the patriarchal tradition of philosophy that she claims Nietzsche is still stuck in, and on the other hand, it also represents a liberation from resentment and misogyny in relations of the sexes. The notions of listening to oneself and to the other, being touched and tearing, enable such a liberation, both on the level of relations of the sexes and on the level of philosophical dialogues and thinking that Dionysus and Ariadne also represent. The water/ocean in the title ofMarine Loverindicates how this is a philosophical text that displays an explicit processing and articulation of feelings, emotions, and affects in philosophical thinking.
A Parsimonious Generalised Height-Diameter Model for Scots Pine Plantations in Bulgaria
Authors: Stankova Tatiana Vassileva , Dimitrova Proletka , Dimitrov Dimitar , Ferezliev Angel , Stefanova Penka
Published: June 2022

Considering the state-of-the-art of forest inventory in Bulgaria, our investigation pursued development of a parsimonious generalised height-diameter model for the Scots pine plantations in the country. A number of 2-, 3- and 4-predictor candidate models were examined and compared based on their goodness-of-fit statistics. Data records obtained in variable-sized sample plots, established throughout the distribution range of the plantations and covering the variety of sites, densities and growth stages were used to fit the models. Two hundred twenty-four plot-level measurements and 3056 tree height-diameter pairs were utilised for parameterization. An independent data set of tree-level measurements and two sets of dominant height-diameter pairs, estimated for differently defined top height tree collectives, were used for model validation. Statistical analyses were carried out using packages nlstools, moments, equivalence, car, nlme, stats and the results were illustrated with ggplot2 and graphics packages of R software environment. A modified form of Gaffrey’s model was selected, which estimates the height of a tree through the breast-height tree diameter, mean stand height and diameter, and accounts for the tree social status. It was fitted by generalised non-linear least squares method, with residual variance weighted by a product of tree diameter and mean stand height exponential functions. An adjusted coefficient of determination of 0.917 and residual standard error of 0.794 m indicated the high predictive potential of the derived model. Validation tests showed that the estimated regression line is very well fitted to the independent data and is appropriate to forecast dominant stand heights. The range of errors, relative to the predicted dominant height values, was narrow, ±25-30%, with low magnitude of the average of their absolute values (4-5%). The equivalence tests rejected the null hypothesis of dissimilarity regarding model bias (observations-predictions line intercept) for all validation data sets, for a region of equivalence as narrow as ±5%. The 3-predictor generalised height-diameter model developed in our study needs information readily available from the inventories and therefore can be broadly used. Its application in dominant stand height prediction is recommended.
Libya and the Prisoner’s Dilemma
Authors: Kamel Amir Magdy
Published: June 2022

This paper explores the prisoner’s dilemma in the context of interactions between Libya’s Tripoli- and Tobruk-led actors in the period between Gaddafi’s 2011 ousting and the 2015 Libyan Political Agreement. In so doing, it reveals the extent to which Libyan decisions aligned with the game’s principal outcome-maximizing strategy to ascertain authority and a non-outcome-maximizing strategy’s conflict resolution-through-cooperation goal. In contrast to the game’s assumptions, however, the findings convey how negotiations between the two players were driven by contextual factors, predominantly: Libya’s historical makeup, internal–external links, and hydrocarbon control. This informs my contention that the complexities of the Libya case study demonstrate the limits of the prisoner’s dilemma in illuminating the dynamics of a given political phenomenon. As a result, this account presents a novel Libya-specific blueprint of the prisoner’s dilemma that highlights the limitations of this framework and concludes with a reflection on what this means for understanding this type of game.
Justice, Reconciliation, and State-Building in Post-Gaddafi Libya
Authors: Sawani Youssef Mohammad
Published: June 2022

This article argues that the transitional justice (TJ) approach in post-Gaddafi Libya has failed because it lacked national reconciliation. Libya’s transition experience did not include reconciliation and agreement on a new social contract, and this not only perpetuated conflict, exclusion, and division, but also frustrated the pursuit of a peace, and made democratic transition a remote possibility. Taking stock from local and relevant comparative international experiences, the main argument is that the nexus between TJ and peacebuilding should be replaced, or at least coupled, with an inclusive national reconciliation process that yields an agreement on a new social contract. This implies the urgent need to go beyond the often externally promoted TJ and narrow state-centric processes in a country where the state itself has been destroyed and its future form remains highly contested with some actors such as Islamists with illiberal notions contesting the nation-state and its legitimacy, authority, and the issue of human rights.
The Impact of Brain Drain on Development
Authors: Morabety Ahmed El , Morabety Mohamed El
Published: June 2022

Brain drain, or human capital flight, is the emigration of highly educated individuals and well-experienced professionals from low-income economies to more prosperous ones. Brain drain in Morocco has dramatically increased over the last years, and has become one of the most hotly debated issues in the country. This paper explores the main push and pull factors behind this ever-increasing flight of skilled labor, and highlights its effects on development and economic growth. It further suggests some ideas to be considered so as to address this increasingly complex challenge.
The Turkish Art of Offensive-Balancing from the Perspective of Neorealism
Authors: Grafov Dmitry B.
Published: June 2022

In his foreign policy, Recep Tayyip Erdoğan has reconsidered commitments to the United States and NATO allies that limit his political ambitions. Turkey’s military power is actively involved in Syria, Iraq, Libya, the Eastern Mediterranean, and the South Caucasus in an attempt to alter the existing regional orders. Offensive realism, as a branch of neorealism, asserts that states are willing to use force to advance their own interests, and that their survival in the international system requires a maximization of power. Defensive neorealism holds that aggressive expansion clashes with the interests of other states and their desire to ensure their own security. According to the balance of power theory, the expansion and maximization of power reduces the security of an offensive state by countering a coalition of balancing states. At the same time, Turkish foreign policy strongly supports the formation of an Islamist, neo-patrimonialist, populist, and security-obsessed ruling bloc representing the resentment of Turkish society of the historical injustices committed by the West. This article attempts to determine Erdoğan’s strategy, examines it from the standpoint of the offensive/defensive approach of neorealism, and evaluates its effectiveness. Erdoğan has created a multi-polar balancing structure of foreign relations in which Turkish rivals restrain each other. This structure is similar to a pentahedron with Turkey in the center and its main rivals–partners arrayed around it at each point. Ankara, by shifting closer to one or another rival–partner, can effectively bargain with others using threats.
On spectral radius and Nordhaus-Gaddum type inequalities of the generalized distance matrix of graphs
Authors: Merajuddin M. , Bhatnagar S. , Pirzada S.
Published: June 2022

If $Tr(G)$ and $D(G)$ are respectively the diagonal matrix of vertex transmission degrees and distance matrix of a connected graph $G$, the generalized distance matrix $D_{\alpha}(G)$ is defined as $D_{\alpha}(G)=\alpha ~Tr(G)+(1-\alpha)~D(G)$, where $0\leq \alpha \leq 1$. If $\rho_1 \geq \rho_2 \geq \dots \geq \rho_n$ are the eigenvalues of $D_{\alpha}(G)$, the largest eigenvalue $\rho_1$ (or $\rho_{\alpha}(G)$) is called the spectral radius of the generalized distance matrix $D_{\alpha}(G)$. The generalized distance energy is defined as $E^{D_{\alpha}}(G)=\sum_{i=1}^{n}\left|\rho_i -\frac{2\alpha W(G)}{n}\right|$, where $W(G)$ is the Wiener index of $G$. In this paper, we obtain the bounds for the spectral radius $\rho_{\alpha}(G)$ and the generalized distance energy of $G$ involving Wiener index. We derive the Nordhaus-Gaddum type inequalities for the spectral radius and the generalized distance energy of $G$.
Self-efficacy, stress levels and daily style of living among older patients with type 2 diabetes in a rural primary care setting: a cross-sectional study
Authors: Klinis Spyridon , Symvoulakis Emmanouil K. , Stefanidou Maria , Bertsias Antonis , Christodoulou Nikolaos , Tsiouri Ioanna
Published: June 2022

Aims. To identify to what extent stress and self-efficacy may be associated with specific features in the elderly with type 2 diabetes, such as lifestyle habits, multi morbidity, sleep quality and duration, and treatment regimen. Methods. A cross-sectional study of 92 out of 103 recruited patients ≥65 year old with a diagnosis of type 2 diabetes was conducted at a rural primary care unit in Northern Greece. The General Self-Efficacy Scale (GSES), the Short Anxiety Screening Test (SAST) and an original questionnaire to assess health habits and disease monitoring information were completed after structured personal interviews.

Results. In the multiple linear regression analysis, patients with higher education, with more night sleeping hours and physical exercise weekly had a higher GSES score than their counterparts (p<0.05). Stress levels assessed with SAST were shown mostly associated with poor sleep quality, fewer days of meat and legumes consumption, increased body mass index and multi-morbidity (p<0.05), as emerged from the multiple linear regression analysis. Glycemic control in the elderly does not have a significant correlation with stress levels or general self-efficacy.

Conclusions. Self-efficacy and stress levels are not predictors for glycemic control, but can indirectly be seen as co-determinants, contributing to the overall daily life quality among patients with diabetes. Mental health well-being, expressed by higher self-efficacy and less stress scale rating, showed positive interferences with eating, sleep and daily life attitudes among elderly with diabetes.
Identification of risk factors associated with hyponatremia in psychiatric patients: a case-control study
Authors: Powle Himani , Shet Ashvitha , Mendonca Arline , Thulasi Lakshmi , Poojari Pooja , Thunga Girish , Munoli Ravindra , Kunhikatta Vijayanarayana
Published: June 2022

Background and aims. Prompt recognition and optimal management of hyponatremia helps the physician devise a better treatment plan to prevent future complications in patients. Hence this study aims to identify the risk factors associated with hyponatremia in psychiatric patients.

Methods. A case-control study was conducted among psychiatric inpatients in a tertiary care teaching hospital. Patients admitted from January 2013 to December 2017 were identified using ICD-10 code F01-F99. Patients with serum sodium levels < 135 mmol/L were considered to have hyponatremia and between 135-145 mmol/L as controls. Factors associated with hyponatremia were identified by multiple logistic regression, and the odds ratio (OR) was calculated.

Results. Based on the inclusion and exclusion criteria, 264 cases of hyponatremia and 253 matching controls were included in the study. The mean age of patients with hyponatremia was 56.4 ± 16.8 years compared to 39.6 ± 13.9 years in controls, and 65.7% of them were males. Seizure disorder (OR = 3.14, p = 0.047), bipolar disorder (OR = 6.03, p = 0.001), depression (OR = 4.78, p = 0.0005), use of quetiapine (OR = 2.11, p = 0.007) and insulin (OR = 3.53, p = 0.038) were independent risk factors associated with development of hyponatremia.

Conclusions. The chances of developing hyponatremia are increased in psychiatric patients with a seizure disorder, bipolar disorder, depression and using quetiapine or insulin. And they should be monitored carefully.
Characterization of eggshell as a bio-regeneration material
Authors: Opris Horia , Baciut Mihaela , Bran Simion , Dinu Cristian , Armencea Gabriel , Opris Daiana , Mitre Ileana , Manea Avram , Stoia Sebastian , Tamas Tiberiu , Barbur Ioan , Baciut Grigore
Published: June 2022

Objective. The objective of this study was to identify and summarize the characteristic features of eggshell for regeneration purpose in oral surgery procedures.

Methods. A review of literature was undertaken based on the PubMed database. A search to reveal the current state of knowledge and the current uses of the eggshell as a biomaterial was performed. The characteristics of the materials, the specific use, the procedure and the outcome were extracted from the articles.

Results. The materials have been found to be used in humans, animals, and in vitro studies. There is a wide use regarding oral surgery especially in experimental models. There have also been attempts to enhance certain properties and improve the capabilities of eggshell as a biomaterial. There is yet a commercial product to be developed and approved for human use.

Conclusions. Eggshell can be an important biowaste which can be of use in guided bone regeneration procedures, but it has not yet entered the commercial phase and approval through official regulation channels.
MBOAT7 rs641738 variant in metabolic-dysfunction-associated fatty liver disease and cardiovascular risk
Authors: Ismaiel Abdulrahman , Spinu Mihail , Osan Sergiu , Leucuta Daniel-Corneliu , Popa Stefan-Lucian , Chis Bogdan Augustin , Farcas Marius , Popp Radu A. , Olinic Dan Mircea , Dumitrascu Dan L.
Published: June 2022

Introduction. Although metabolic-dysfunction-associated fatty liver disease (MAFLD) is associated with an increased cardiovascular risk, MAFLD predisposing genetic variants were not steadily related to cardiovascular events. Therefore, we aimed to assess whether membrane-bound O-acyltransferase domain-containing 7 (MBOAT7) rs641738 variant is associated with an increased cardiovascular risk in in MAFLD patients.
Methods. We conducted an observational cross-sectional study including 77 subjects (38 MAFLD patients, 39 controls), between January-September 2020 using hepatic ultrasonography and SteatoTestTM to assess hepatic steatosis. Echocardiographic and Doppler ultrasound parameters were evaluated. Genomic DNA was extracted and rs641738 SNP was genotyped using TaqMan assays.
Results. The rs641738 variant was not significantly associated with MAFLD, with a p-value of 0.803, 0.5265, 0.9535, and 0.5751 for codominant, dominant, recessive, and overdominant genotypes, respectively. The rs641738 variant overdominant genotype significantly predicted atherosclerotic cardiovascular disease (ASCVD) risk algorithm in univariate analysis (-4.3 [95% CI -8.55 – -0.55, p-value= 0.048]), but lost significance after multivariate analysis (-3.98 [95% CI -7.9 – -0.05, p-value= 0.053]). The rs641738 variant recessive genotype significantly predicted ActiTest in univariate analysis (0.0963 [95% CI 0.0244 – 0.1681, p-value= 0.009]), but lost significance after multivariate analysis (0.0828 [95% CI -0.016 – 0.1816, p-value= 0.105]).
Conclusion. No significant association was observed between rs641738 variant and MAFLD in the studied population. The rs641738 variant was found to predict ASCVD risk score and ActiTest in univariate linear regression analysis. However, the significance of both associations was lost after performing multivariate analysis.
Is smart urban governance possible in developing countries? Constraints, resources, innovative tools and strategies
Authors: Abdellaoui Abdelkader
Published: June 2022

Until recently, we were talking about urban management, local management and territorial management. We are now talking about smart city or intelligent city, terms that have become fashionable in specialized literature and even in everyday language to such an extent that those who ignore them could consider themselves overtaken by the passage of time. But what does the term "smart city" actually mean? Smart city is a city equipped with the tools enabling it to observe, learn and react from the data collected. To observe itself, the smart city needs a large set of various sensors and materials. To this definition, some prefer to oppose another, which would define the smart city as a city that is more liveable, less polluting and in which the user is given a place. This definition obviously does not exclude neither the fact of the connection and the acquisition of essential information necessarily multiple and numerous, nor the complexity of the internal system of analysis and automated decision-making oriented towards the comfort of the user. Some see the smart city as a process and an approach and not as an end. So what about in developing countries where society is undergoing profound and rapid change? Can we adapt the concept in the implementation of a new governance of the city? Answering these questions is not easy. To get around the difficulty, we will instead offer the concept of a sustainable city where the management of essential information can be made less complex. In this article we will successively deal with the theoretical foundations of the "transition to the smart city" and sustainability, the need for the establishment of a new vision of urban governance and smart governance tools. To illustrate our point, we will present a few simple and didactic examples for the Algerian city of medium importance. Keywords: smart city, sustainability, local governance
OPERATOR METHOD IN DIFFRACTION PROBLEM OF WAVES OF CIRCULAR WAVEGUIDE BY THE ANNULAR DISCONTINUITIES
Authors:   V. N. Karazin Kharkiv National University, Kaliberda M. E. , Lytvynenko L.M. ,   V. N. Karazin Kharkiv National University, Pogarsky S.A. ,   V. N. Karazin Kharkiv National University
Published: June 2022

Purpose. Diff raction problem of the H11 and E11 waves of circular waveguide by the fi nite and semi-infi nite system of similar discontinuities is considered. Four types of discontinuities are considered: iris, disk, ring, annular slot. Th e distance between irregularities is the same. Th e waveguide is fi lled by the dielectric with losses. Design/methodology/approach. To solve the problem we chose the operator method. While so-called key problem, the diff raction problem by a single discontinuity, is solved by the method of moments. The field in the domain of the obstacle is represented as a series in terms of eigenwaves of infi nite waveguide which cross section coincides with the cross section of discontinuity, with unknown amplitudes. To fi nd the amplitudes we obtain the infi nite system of equations, which is solved by the reduction. As a result, the transmission and refl ection operators of a key-problem are obtained. The properties of fi nite sequence are determined from the operator equations relatively amplitudes of the scattered field. To write these equations the iterative procedure is used. The properties of the structure, which consists of N discontinuities are obtained under assumption that the properties of the structure, which consists of N – 1 discontinuity are known. The reflection operator of the semi-infi nite system is obtained from known non-linear operator equation of the second kind. Findings. The systems of equations for every single discontinuity are obtained. The operator equations relatively amplitudes of the scattered fields for fi nite system are presented. With the help of the created model the dependences of the transmission, refl ection coeffi cients of the H11 wave as well as transformation coeffi cients of the H11 to E11 wave of the circular waveguide on the wavenumber, geometrical and material parameters for fi nite and semi-infi nite structures are studied. The comparison of the results obtained by presented method with the results obtained in HFSS is made. Conclusions. With the use of the operator method the scattering model of the H1n and E1n eigenwaves by the system of annular discontinuities of zero thickness in a circular waveguide is built. Th e study of the scattering characteristics on the parameters is made. The coincidence of the behavior of the curves obtained by the presented method with those obtained in HFSS allows us to draw a conclusion about the correctness of the results. Th e results can be used during creation of a series of the microwaves and optic devices.
A STRING MAGNETOMETER USING THE METHOD OF SMALL PERTURBATIONS
Authors:   O.Ya. Usikov Institute for Radiophysics and Electronics of NASU, SOVA K. Yu. , VAKULA A. S. ,   O.Ya. Usikov Institute for Radiophysics and Electronics of NASU, CHERNYAKOV E. I. ,   Kharkiv National University of Radio Electronics, TARAPOV S. I. ,   O.Ya. Usikov Institute for Radiophysics and Electronics of NASU
Published: June 2022

Subject and Purpose. The existing interest in nanosized magnetic materials requires equipment for express post-synthesis measurements of magnetic properties of these nanostructures in such a way as to exclude any mechanical displacement of the sample. Although there exist plenty of methods and devices for studying magnetic properties of materials, the development of novel schemes based on the known techniques for examining properties of magnetic nanomaterials, for example magnetic nanopowders, is a hot problem. Th e measurement equipment of the sort will detect changes in the magnetic properties of materials over time and under the infl uence of various factors, such as temperature, external magnetic fi elds, stabilizing substances. Method and Methodology. The developed setup for registering magnetic hysteresis loops is based on the method of small perturbations performed by an alternating magnetic fi eld. The devised scheme combines conventional physical principles of both hysterometers and vibrating-sample magnetometers. Results. With the aid of the developed setup, magnetic hysteresis loops of La 0.775 Sr 0.225 MnO3 nanopowder have been obtained and compared with the data provided by the well-known technique. A good agreement was observed. Th e measurement error was 10%. Conclusion. The suggested scheme can be used for the express registration of magnetic hysteresis loops of miscellaneous magnetic materials of various compositions, including nanoscale magnets.
Екосистемний підхід до оцінки збитків, завданих воєнними діями
Authors: Дідух Яків Петрович
Published: June 2022

У статті висвітлено екологічні аспекти оцінки збитків, завданих довкіллю внаслідок повномасштабного вторгнення РФ в Україну. Запропоновано оцінювати збитки в балах за трьома критеріями: ступінь пошкодження, стійкість та вразливість на прикладі урбоекосистем. Автор наголошує, що зволікання з вирішенням екологічних проблем у найближчому майбутньому може призвести до значно більших екологічних та економічних наслідків, ніж ми уявляємо на початковому етапі. Ключове завдання для екологів полягає в тому, щоб передбачити «каскадні процеси», оцінити їх можливий негативний вплив на довкілля і запропонувати ефективні заходи протидії. Підкреслено, що заходи з відновлення довкілля потребують розроблення комплексних програм, залучення наукових, людських і технічних ресурсів, пошуку джерел фінансування, зокрема відшкодування збитків за рахунок коштів агресора.
Sinovitis transitoria de cadera en un niño como probable manifestación inicial atípica de COVID-19
Authors: Turazza Florencia , Yunes Joaquín , Tourn Diego , Masquijo Julio Javier
Published: June 2022

Comunicamos el caso de un niño con sinovitis de cadera como manifestación inicial atípica de una infección por SARS-CoV-2. Varón de 7 años que consultó por dificultad en la marcha e impotencia funcional con dolor localizado en la cadera derecha. El diagnóstico presuntivo fue sinovitis transitoria de cadera, por lo que recibió tratamiento conservador. A los 12 días, continuaba con impotencia funcional y presentó decaimiento y fiebre. Ante la evolución atípica del cuadro, se decidió su internación para punción articular/drenaje. Se obtuvo un líquido articular claro de aspecto inflamatorio que no presentó desarrollo en los cultivos bacterianos. Durante la internación, se confirmó el resultado positivo de la reacción en cadena de la polimerasa para SARS-CoV-2. El paciente evolucionó favorablemente una vez resuelto el cuadro viral. En el último seguimiento, no tenía síntomas y el rango de movilidad era completo. La sinovitis transitoria de cadera puede ser una manifestación clínica inicial atípica de COVID-19. En el contexto de la pandemia, es indispensable sospechar una posible artropatía reactiva como consecuencia del virus, principalmente cuando la presentación es atípica, hay contactos familiares estrechos, fiebre u otros síntomas respiratorios asociados.
Efecto de la pandemia en las actividades laborales de nuestros asociados desde el inicio (marzo 2020) hasta la etapa posvacunación (julio 2021)
Authors: Dello Russo Bibiana , Vivas Mauro , Saez Lara Emilce , Barcia Sergio , Santini Araujo Gala , Aquino Gabriela , Piantoni Lucas , Cafruni Virginia María , Camino Willhuber Gastón
Published: June 2022

Introducción: El 11 de marzo de 2020, la OMS declaró la pandemia global por COVID-19 que afectó la práctica ortopédica en el mundo. Para analizar la influencia de la COVID-19 sobre la situación laboral de los socios de la Asociación Argentina de Ortopedia y Traumatología, hemos realizado tres encuestas desde el inicio (marzo 2020) hasta la etapa posvacunación (julio 2021). Los objetivos fueron determinar diferencias en la reducción relativa del trabajo (consultorios, cirugías) durante las tres fases de la pandemia: prepico, pico y etapa de vacunación, y diferenciar entre la población estudiada, cuidados de protección, actividad, testeos, infección, aislamientos, vacunación.

Materiales y Métodos: Encuesta prospectiva, en tres etapas, a los socios en general, autorizada por la Comisión Directiva, desde el inicio del aislamiento social obligatorio (Ro de 2,8), en el pico y posvacunación.

Resultados: Se observó un bajo grado de adherencia que fue disminuyendo progresivamente entre las fases. El 6,99% había sido testeado en la primera encuesta; el 25,29%, en la segunda, y el 88,2%, luego de 6 meses. La reducción de las actividades habituales y la incorporación de la telemedicina, como una nueva forma de intercambio médico-paciente, fue la novedad en la segunda parte de la encuesta.

Conclusiones: Los sistemas de protección han dado un porcentaje aceptable de confiabilidad con un alto índice de vacunación dentro de los especialistas. A pesar del riesgo y los miedos al contagio, la telemedicina no ha logrado ser una alternativa aceptaba tanto por los profesionales como por los pacientes.
Fracturas de calcáneo tipo IIC de Sanders en lengüeta: ¿Es la cirugía percutánea el tratamiento de elección? Evaluación funcional y radiográfica a corto plazo
Authors: Seletti Maximiliano , Baravalle Juan
Published: June 2022

Objetivos: Describir los resultados radiográficos, funcionales y las complicaciones de la cirugía percutánea en pacientes con fracturas de calcáneo tipo IIC de Sanders en lengüeta.

Materiales y Métodos: Se evaluaron 9 fracturas articulares de calcáneo desplazadas en 9 pacientes con radiografías de pie, de frente y de perfil, y tomografía computarizada preoperatorias. Se tomaron radiografías de pie, de frente y perfil, sin carga en el posoperatorio inmediato y con carga a las semanas 6 y 12, y al final del seguimiento. Se midió el ángulo de Böhler y se cuantificó el grado de artrosis subastragalina y calcaneocuboidea. Se evaluaron las siguientes variables: puntaje AOFAS, complicaciones de la herida, lesión neurológica y necesidad de cirugías adicionales, como retiro del material de osteosíntesis y artrodesis subtalar.

Resultados: El seguimiento fue de 21.1 meses. La edad promedio de los pacientes (3 mujeres y 6 hombres) era de 42 ± 12. El ángulo de Böhler preoperatorio fue de 7º (±6,2º) y de 33,6º (±4,1°) en el posoperatorio final (p <0,00001). Hubo una restricción leve de la movilidad subtalar en todos los pacientes. No se observó artrosis subtalar ni calcaneocuboidea. El puntaje AOFAS fue bueno en 4 pacientes y excelente en 5. Todos obtuvieron buenos y excelentes resultados. No se observaron infecciones de la herida, lesiones neurológicas ni complicaciones de la herida.

Conclusión: La cirugía percutánea en fracturas de calcáneo tipo IIC de Sanders en lengüeta permite lograr una reducción adecuada con buenos resultados funcionales y bajas tasas complicaciones de parte blandas.
Instrucción Ortopédica de Posgrado - Imágenes. Resolución del caso
Authors: Re Rodrigo , Negri Maximiliano
Published: June 2022

Osteosarcoma
ОДЕРЖАННЯ ТА ДОСЛІДЖЕННЯ ВЛАСТИВОСТЕЙ КОМБІНОВАНИХ АЛЬГІНАТ-ЖЕЛАТИНОВИХ ГІДРОГЕЛІВ
Authors: Букартик Марта М. , Носова Наталія Г. , Майкович Ольга В. , Букартик Наталія М. , Стасюк Анна В. , Дронь Ірина А. , Фігурка Наталія В. , Хом'як Семен В. , Остапів Дмитро Д. , Влізло Василь В. , Самарик Володимир Я. , Варваренко Сергій М.
Published: June 2022

В статті представлено результати досліджень по синтезу гідрогелевого матеріалу медичного призначення із використанням природніх біополімерів (альгінату натрію та желатину). Ці полімери є біосумісні, нетоксичні, біодеградабельні та відносяться до класу відновлюваної сировини. Комбіновані альгінат желатинові гідрогелі формуються внаслідок утворення сітки гідрогелю при сумісному перехресному зшиванні іонами кальцію макромолекул альгінату натрію, желатину  та макроланцюгів рідкозшитої поліакрилової кислоти. Визначено оптимальні умови синтезу (мінімальні граничні межі концентрацій компонентів, мольне співвідношення йонів кальцію до кількості карбоксильних груп Са2+/СООН-) при яких комбіновані гідрогелі мають задовільні фізико-хімічні та механічні властивості. Залежності механічних властивостей альгінат-желатинові гідрогелі від ступеня набрякання вказують на широкий діапазон їх задовільних експлуатаційних характеристик. Вивчено здатність отриманих гідрогелів сорбувати та вивільняти знеболювальні препарати (лідокаїн та новокаїн). Здатність альгінат-желатинових гідрогелів до тривалого вивільнення лікарських препаратів дозволяє прогнозувати тривалість пролонгованої доставки цих препаратів до ран. Проведений аналіз цитотоксичності in vitro показав, що синтезовані гідрогелі не мають токсичного впливу на живі клітини. Сукупність переліченого спектру властивостей дозволяє стверджувати, що отримані комбіновані альгінат-желатинові гідрогелі є перспективним матеріалом для створення гідрогелевих пов’язок для догляду за ранами.
КІНЕТИКА І МЕХАНІЗМ ЕЛЕКТРОХІМІЧНОГО ВИДІЛЕННЯ КИСНЮ У ЛУЖНОМУ РОЗЧИНІ НА НІКЕЛЕВИХ ПОКРИТТЯХ
Authors: Проценко Вячеслав С. , Бутиріна Тетяна Є. , Данилов Фелікс Й.
Published: June 2022

Вивчені кінетичні закономірності і охарактеризований механізм анодного виділення кисню з водного лужного розчину на двох типах нікелевих електродів, одержаних методом електроосадження. Перший тип нікелевого покриття був отриманий зі «звичайного» водного хлоридного електроліту нікелювання. Другий тип нікелевого покриття був осаджений з електроліту на основі ethaline (евтектична суміш холін хлориду і етиленгліколю), що є типовим представником так званих низькотемпературних евтектичних розчинників (нового покоління низькотемпературних іонних рідин). Електрокаталітичні характеристики Ni покриттів у реакції виділення кисню оцінювали методами лінійної вольтамперометрії і спектроскопії електродного імпедансу. За умов помірної поляризації лімітувальною стадією на обох типах електродів є перенесення другого електрона. При зростанні поляризації уповільненим стає перенесення першого електрону. Ni покриття, електроосаджене з електроліту на основі ethaline, демонструє більш високу електрокаталітичну активність, ніж покриття, отримане з водного електроліту, що підтверджується більшими густинами струму обміну і меншими поляризаційними опорами. Спостережені ефекти є наслідком не стільки зростання площі поверхні, доступної для електрохімічного процесу, скільки проявом "істинної" електрокаталітичної активності.
PEMETAAN TINGKAT KONSUMSI IKAN RUMAH TANGGA DI INDONESIA
Authors: Virgantari Fitria , Koeshendrajana Sonny , Arthatiani Freshty Yulia , Faridhan Yasmin Erika , Wihartiko Fajar Delli
Published: June 2022

Ikan merupakan salah satu produk pangan hewani yang memiliki kontribusi cukup besar terhadap konsumsi protein penduduk di Indonesia. Dari tahun ke tahun tingkat konsumsi ikan terus meningkat; namun ironisnya, tingkat konsumsi ikan di Indonesia masih tergolong rendah. Selain itu, data menunjukkan bahwa persebaran konsumsi ikan nasional per pulau selama ini tidak merata. Tingginya disparitas tingkat konsumsi ikan di Jawa atau Kawasan Barat Indonesia dengan Kawasan Timur Indonesia menyebabkan tingkat konsumsi ikan nasional relatif rendah. Salah satu cara yang dapat digunakan untuk memantau tingkat kecukupan konsumsi ikan dengan mudah adalah dengan mengelompokkannya di seluruh Indonesia. Dengan adanya klasterisasi kemudian pemetaan, perencanaan, monitoring dan evaluasi, serta sistem peringatan dini masalah kelangkaan konsumsi dapat dilakukan dengan baik. Kajian ini dilakukan dengan tujuan untuk menilai tingkat konsumsi ikan di Indonesia dengan cara mengelompokkan dan memetakannya; sehingga dapat dirumuskan rekomendasi kebijakan peningkatan konsumsi ikan penduduk Indonesia secara akurat. Data yang digunakan dalam penelitian ini adalah data sekunder SUSENAS 2019 yang diselenggarakan oleh Badan Pusat Statistik. Variabel yang digunakan dalam penelitian ini adalah tingkat konsumsi ikan, tingkat partisipasi, dan tingkat pengeluaran untuk ikan. Pengelompokan dilakukan berdasarkan metode cluster K-means. Hasil analisis menunjukkan bahwa jumlah cluster yang optimal dengan rasio variance terkecil adalah 5 cluster. Klaster 1 dengan tingkat konsumsi, partisipasi dan pengeluaran ikan terendah adalah provinsi Daerah Istimewa Yogyakarta dan Jawa Tengah. Klaster 2 terdiri dari 5 provinsi yaitu Lampung, Jawa Barat, Jawa Timur, Bali, Nusa Tenggara Timur. Klaster 3 terdiri dari 8 provinsi, yaitu Sumatera Barat, Sumatera Selatan, Bengkulu, Banten, Nusa Tenggara Barat, Sulawesi Tengah, Gorontalo, dan Sulawesi Barat. Klaster 4 terdiri dari 11 provinsi yaitu Sumatera Utara, Jambi, DKI Jakarta, Kalimantan Barat, Kalimantan Selatan, Sulawesi Utara, Sulawesi Tenggara, Maluku, Maluku Utara dan Papua. Sedangkan cluster 5 dengan tingkat konsumsi, partisipasi, dan pengeluaran ikan tertinggi terdiri dari 8 provinsi, yaitu Aceh, Riau, Kepulauan Bangka Belitung, Kepulauan Riau, Kalimantan Tengah, Kalimantan Timur, Kalimantan Utara, dan Papua Barat
Peran Cold Storage Dalam Pengembangan Kawasan Minapolitan Perikanan Tangkap Di Pasir Jambak Kota Padang
Authors: Apriyeni Deltri , Wati Wati
Published: June 2022

ABSTRAK  Kemajuan ekonomi wilayah sangat ditentukan oleh perkembangan pusat pertumbuhan ekonomi. Kawasan Minapolitan Pasir Jambak sebagai lumbung penghasil produk perikanan tangkap di Kota Padang dapat menjadi salah satu pusat pertumbuhan ekonomi di Indonesia. Studi ini bertujuan untuk menganalisis kemampuan kawasan sebagai lumbung penghasil tangkapan yang optimal dan meningkatkan keberadaan cold storage (ruang pendingin) dalam menyerap hasil tangkapan nelayan lokal, menganalis langkah strategis dalam mengatasi kelangkaan produk dan menstabilkan harga di pasaran. Jenis penelitian ini adalah deskriptif kualitatif dengan menggunakan data primer dan data sekunder. Penelitian dilakukan pada Januari 2021. Pengumpulan data dilakukan melalui observasi, wawancara, dokumentasi dan FGD (Focus Group Disscusion). Teknik pemilihan responden menggunakan purposive sampling. Teknik analisis data dilakukan secara kualitatif dengan langkah reduksi data, penyajian data dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa kemampuan kawasan sebagai lumbung penghasil produk tangkapan laut belum mencapai optimal. Karena belum mampu memenuhi kebutuhan konsumsi lokal. Hasil tangkapan nelayan langsung diserap oleh pasar tanpa harus dibeli oleh pemilik cold storage. Pemilik cold storage justru membeli produk tangkapan nelayan yang berasal dari luar kawasan minapolitan. Dalam skala mikro cold storage sudah berperan dalam mengatasi kelangkaan produk di pasar dan bisa menstabilkan harga ketika terjadi kelangkaan komoditi. Perlu dilakukan pengembangan kawasan menjadi kawasan mandiri dengan meningkatkan volume hasil tangkapan nelayan, jenis komoditi yang dihasilkan dengan meremajakan armada kapal, meningkatkan kemampuan alat tangkap nelayan yang lebih moderen. Fasilitas penunjang suatu kawasan perikanan tangkap harus menjadi fokus pengembangan selanjutnya untuk menjadi kawasan yang maju dan berkembang. Kata kunci: kawasan minapolitan; hasil tangkapan; cold storage; kualitatif;  armada kapal; alat tangkap
Przyszłość przez przeszłość – rola historii w koncepcji patriotyzmu konstytucyjnego Jürgena Habermasa
Authors:   Uniwersytet Warszawski, Raczyński Mikołaj
Published: June 2022

The definition of patriotism is usually restricted to the conclusion that its aim is mere cultivation of the historical memory. However, patriotism has two distinct faces: one pointed at the past and the other focused on the present. What is more, in the opinion of many scholars, patriotism doesn’t need to be closely related to one nation or culture. An interesting concept of constitutional patriotism was developed by German historians and philosophers during the debate on national identity after World War II. Jürgen Habermas has been one of the founders of this project. According to the German philosopher, constitutional patriotism doesn’t mean just positivist constitutional acts, but some abstract forms, interpretations of a particular community. Such universal principles may be, for instance, procedures of sovereignty and liberal rights. The following article conveys arguments indicating that the role of history is very important in the concept of constitutional patriotism by Jürgen Habermas.
Dyplomacja samorządowa jako innowacyjny instrument zarządzania regionem
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Bierzyńska-Sudoł Magdalena
Published: June 2022

The aim of the article is to present self-government diplomacy as a novel, innovative form of international contacts realized by regional and local authorities, including the kujawsko-pomorskie voivodeship. The author has made a formal and statistical analysis of the various forms of functioning of this method of international cooperation. On this basis, the author concludes that local government diplomacy fosters the construction of international social, economic, cultural and other ties at local and regional level.
Przeszłość prawa pracy a współczesna polityka rynku pracy w Polsce
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Barszcz Marek
Published: June 2022

In 1989, he began the process of systemic transformation, which concerned the labor market, based on a rejection of the current legal status of labor law. In the study, changes in the market, the author used the analysis of the institutional and legal in conjunction with the recognition decision policy. The author took the research period of systemic transformation and change in recent years (since 2014) with the proposals programmatic political parties.
Wyzwania okresu transformacji ustrojowej w Argentynie – niedokończony proces rozliczania się z tzw. brudną wojną
Authors:   Uniwersytet Warszawski, Zamęcka Paulina
Published: June 2022

A political transformation that has started in Argentina in 1983 put an end on the reign of military junta, but at the same time it was related with a number of challenges for both first democratic governments and the argentine society as a whole. One of the most problematic issues resulting from the confrontation with the crimes from 1976 – 1983 was so called transitional justice and the problem of identity and collective memory of societies coming out of the period of trauma, which are characterized by a high polarization due to different, even contradictory at times interpretations and ideas about the past. The article attempts to analyze the difficult process of settlement of the dirty war period, including the characteristics of the preceding events, the policy of the first democratic governments and the original strategies developed by the argentine movement for human rights, which on the one hand aimed to combat with the impunity of the perpetrators, and on the other hand to counteract the social amnesia and to keep the memory about the tragic past events alive.