bluuebunny/crossref_metadata_2025 huggingface dataset:
Mapping Embryogenesis in the Early Phases of Seabass (Lates calcarifer) Eggs on Different Salinities
Authors: Djawad Muhammad Iqbal , Tenriajeng Muhammad Al Ghiffari , Trijuno Dody Dharmawan
Published: October 2024

Embryogenesis is a critical stage in the development of fish eggs, as it determines the successful hatching and survival of larvae. Understanding the effects of salinity on embryogenesis is crucial for optimizing hatchery practices and improving the production of fish larvae, such as the seabass. The purpose of this study was to map the stages of embryonic development against various salinities in order to identify the ideal salinity for seabass egg hatching. Eggs from natural spawning in a maintenance bath were used in this investigation. Four containers with salinity treatments (20 ppt, 25 ppt, 30 ppt, and 35 ppt) are used to lay fertilized eggs. The findings demonstrated that, in comparison to 20 ppt and 25 ppt treatments, eggs at 30 ppt and 35 ppt treatments generated faster embryonic development stages. Different incubation salinities have a highly substantial effect on the hatching speed of seabass eggs. Further testing revealed that the eggs hatched in 14 h and 40 min, which had the fastest seabass roe hatching time (35 ppt), and 15 h and 20 min for the 20 ppt salinity treatment. The 35 ppt salinity treatment had the highest hatchability rate (80.67%), while the 20 ppt salinity treatment had the lowest percentage (71.78%). It can be concluded that a salinity of 35 ppt provides a good embryo development response where there are no embryos that fail to develop, have the shortest hatching times of 14 h and 40 min, and produce the highest hatchability of eggs compared to other salinities.
Dušan Janák: Klasická sociologie ve střední Evropě. Mezi centrem a periferií
Authors: Nešpor Zdeněk R.
Published: October 2024

A review of the book by Dušan Janák.
Living in the Beautiful City
Authors: Rodríguez Polo Mario
Published: October 2024

This paper presents a view of a Central European city as a space where memory processes provide the context for understanding everyday racism. Participatory research gave voice to otherwise muted experiences of constructed “others” living in the Beautiful City as they navigate and experience racism. Their experiences under the disciplinary gazes of those constructed as a hegemonic population and its occasional violent aggressions give account of how the urban space remains an essential part of a mechanism of subjugation for visible “others”. The hegemonic population perceives urban space as neutral, considering racism a marginal or an accidental phenomenon. On the contrary; the analysed experiences are only possible to explain under the hidden existence of a racial hierarchy, based on the locals’ performed right of belonging to the city. Such a hidden hierarchy constitutes a key element for understanding racism in East-Central Europe.
Skilled Labour Migration
Authors: Topinka Daniel , Lang Petr , Čejková Olga , Ondrašinová Michaela
Published: October 2024

Expatriates are one type of international skilled labour migration. This text will focus on conceptualising and defining categories of expatriates for research purposes. A closer examination requires a definition that reflects theoretical definitions, but also takes into account the local delimitation and even the self-concept of the immigrants themselves. In this text, these perspectives are laid out side by side. Our conceptualisation is comprised of four basic attributes that refer to the centre of personal life (life strategies), the temporary aspect of residence, professional or working skills, and the motivation to migrate. At the local level, the Brno Expat Centre (BEC) operating in the South Moravian Region, is monopolistically involved in the definition of expatriates on a practical scale. The processes of globalisationand trans-nationalisation have led to the diversification of forms of labour migration, which, together with interdisciplinarity, has resulted in a considerable ambiguity of terms and concepts. Thus, for research purposes, one must bear in mind that despite the uniform designation, we are dealing with a very diversified phenomenon. If expatriates are distinguished from skilled migrants, we usually emphasise the undefined length of their stay as opposed to permanent residence and the very important self-concept of expatriates. Brno has become one of the most important places of concentration of expats in the Czech Republic. From the pre-research of the Indian expats case, it shows that the different transnational strategies are very diverse. For further research, it is important to explore the social and demographic characteristics of expats, and we need qualitative research that focuses on the structural conditions of the life of expats and the self-evaluation of expats themselves, considering ethno-cultural factors and gender. Their family members also cannot be ignored.
Our National Heroes
Authors: Jurková Zuzana
Published: October 2024

The following text is focused on the rise of a new, post-revolutionary (after the 1989 “Velvet Revolution”) pantheon on the Prague music scene. Two distinct modalities are discussed: a “state-supported” one, represented by the opera Toufar (the title hero of which is a priest-martyr of the Communist regime), and a subversive one, represented by the musical Velvet Havel! The ethnographic descriptions show both similarities in the music forms and languages, and a distinctiveness regarding the stakeholders. Through interviews with the authors of the presented works, the driving forces behind the rise of music representations are revealed, and the basic premises of contemporary collective memory studies about its constructed nature and about its collective-identity-forming character are confirmed.
Rubin, Eli. 2016. Amnesiopolis: Modernity, Space, and Memory in East Germany
Authors: Kočková Jana
Published: October 2024

A review of the book by Eli Rubin.
Autenticita a představy v antropologii turismu
Authors: Půtová Barbora
Published: October 2024

The anthropology of tourism represents a relatively new and dynamically developing sub-discipline and thematic field of sociocultural anthropology. The pivotal research topics of the anthropology of tourism are authenticity and tourism imaginaries. The main objective of this paper is the theoretical analysis of particular approaches to the studies of authenticity as they have been developed since the 1970s. Special attention is paid to the phenomenon of tourism imaginaries, which have been the subject of the anthropology of tourism since the 1990s. Therefore, this paper includes the typologies of these categories, as well as further elaboration of the category of the tourists’ perspective, including how theory makes this perspective more accurate and gradually differentiated. This paper presents the development of research terms and categories in the wider context of the development of the anthropology of tourism, and analyses the power relations that affect the relations between guests and hosts.
Dumpster diving jako pramen kreativity
Authors: Brunclíková Lenka , Kliková Jana
Published: October 2024

This paper aims to present dumpster diving as a source of creativity. We argue that thanks to dumpster diving, the pickers exhibit some forms of creative behaviour that would otherwise be concealed or suppressed. We understand creativity as “creativity forward” (Ingold and Hallam 2007), which means considering the process of being creative itself rather than any tangible innovative result that might come from this process. Our view differs from the concepts of creativity and innovation in the fields of business or technology, where the particular, and more importantly, useful result of the creative process is taken as the criterion for creativity. Since dumpster divers face multiple obstacles during their activities, they are forced to creatively come up with solutions and to flexibly respond to whatever issues emerge. In contrast to customary shopping, dumpster divers are also challenged by the issue of how to consume an excessive amount of one type of food so as to not dispose of it again.
Empatie a emoce v etnografickém výzkumu
Authors: Ponocná Petra
Published: October 2024

Ethnographic research differs from other types of research by literally being an embodied experience. The essential part of ethnographic research is observation and participation, including listening and asking questions about the lives of people, their experiences, and the meanings they give to their experiences and lives. Establishing relationships in the field can often result in an ethical challenge, related to this relationship and to personal boundaries, as well as to the problem of binding after the ethnographer leaves the terrain. If the subject of research requires a thorough / deep sensitivity, the ethnographer finds themselves on thin ice. The researcher can be emotionally influenced by what they do, by the places they find themselves in, and by the answers they receive. In this article, I submit my own methodological reflection on my research on the perception of death in contemporary Mexico City. I focus on the ways in which emotions and empathy can influence the relationship between the researcher and the informant. An important part of the article is the reflection of the overwhelming emotions experienced, and the actions that must be observed for coping with mental pressure.
První česká antropologická monografie
Authors: Voráček Josef
Published: October 2024

The first – unsuccessful – attempt at establishing social or even general anthropology in the Czech environment was the work of Josef Voráček, dating to the interwar period. As yet, the works of Voráček have not been the focus of the analysis they deserve; however, they are easily available – with one exception, i.e. the brochure introducing the first Czech anthropological monograph entitled The Beginnings of Ownership and Law from the Perspective of Ethnology and Sociology from 1936. This work, obviously stemming from the analytical and interpretative tradition of the “ethnology” of Mauss, primarily uses the methodology used in philosophical anthropology. We are therefore introducing it to the readers. The author attempts to construe the primordial relation between property rights and magic, and it assumes that the first property of man was their body and their personal effects, from which he derives consequences for property-law and social relations in pre-logical societies, as well as what remained of them in later periods of cultural development.
Miroslav Hroch: Hledání souvislostí. Eseje z komparativních dějin Evropy
Authors: Pešek Jiří
Published: October 2024

A review of the book by Miroslav Hroch.
Ondřej Daniel: Násilím proti „novému biedermeieru“. Subkultury a většinová společnost pozdního státního socialismu a postsocialismu
Authors: Almer Jiří
Published: October 2024

A review of the book by Ondřej Daniel.
Cardiorenal interactions in patients with juvenile idiopathic arthritis
Authors: Bohmat L. F. , Shevchenko N. S. , Holovko T. O. , Nikonova V. V.
Published: October 2024

As early as the first stages of rheumatic diseases in children, a number of pathological changes occur with the involvement of many organs and systems in the process. In children with juvenile idiopathic arthritis (JIA), decreased adaptability of the cardiovascular system is detected in 17.0–20.0 % of cases. 36.9 % of children with JIA develop renal lesions. Thus, inflammation underlies the interaction between pathological mechanisms of renal and heart failure in patients with rheumatic diseases.
The aim of the work is to identify the characteristics of the interaction between main morphofunctional parameters of the cardiovascular system and kidneys in children with JIA, and the factors that give rise to the formation and worsening of these disorders.
Materials and methods. 152 patients aged 13.42 ± 0.22 years with JIA were examined. Renal functions were examined based on the levels of creatinine, urea, albuminuria, urine specific gravity, glomerular filtration rate. To determine the morphofunctional parameters of the heart, ultrasound examinations of both left and right ventricles were performed.
Results. In children with JIA, the functional parameters of the kidneys almost do not differ from those of the control group, with the exception of albuminuria, which is significantly higher in children of the main group and increases with the process activity progression. Morphofunctional analysis of the cardiac parameters has shown a decrease in the stroke volume of the left ventricle (51.83 ± 1.57 ml against 57.86 ± 2.54 ml, р < 0.05) with preserved ejection fraction and a significant increase in the right ventricle volumes both diastolic (34.54 ± 1.51 ml against 22.45 ± 2.11 ml, p < 0.001) and systolic (19.15 ± 0.96 ml against 10.18 ± 1.14 ml, p < 0.001), as well as stroke volume (15.39 ± 0.84 ml against 12.21 ± 1.05 ml, p < 0.01), with a significant decrease in its ejection fraction (45.04 ± 1.44 % against 56.06 ± 1.59 %, p < 0.001).
Conclusions. Renal functional parameters are within normal values, but the level of albuminuria is significantly higher and increases with the process activity progression in children with JIA. The morphofunctional parameters of the left ventricle correspond to the control ones, but there is an increase in the right ventricle volume with a significant decrease in its ejection fraction. A decrease in the myocardial pumping function of the right ventricle is accompanied by a decrease in renal blood supply which leads to the development of cardiorenal syndrome type 5 in JIA children.
Perimenopause period and menopause: cardiovascular and metabolic risks
Authors: Siusiuka V. H. , Vizir V. A. , Serhienko M. Yu. , Demidenko O. V. , Deinichenko O. V.
Published: October 2024

The number of mature and elderly women is increasing all over the world. According to the World Health Organization, in most countries of the world, the life expectancy of women after the age of 50 ranges from 27 to 32 years. Thus, approximately one third of a woman’s life is lived after menopause.
Aim. To analyze and summarize scientific data on cardiovascular and metabolic risks in perimenopausal and menopausal women based on the use of scientometric databases.
Menopause should be considered as a risk factor for the development of cardiovascular diseases (CVDs), which triggers a whole cascade of pathological changes in a woman’s body, including the development of arterial hypertension, dyslipidemia, abdominal obesity, insulin resistance, an increased sympathoadrenal tone, endothelial function disorders, and inflammatory vascular reactions. CVD is known to be the leading cause of death among postmenopausal women associated with the loss of estrogenic protective effect on the cardiovascular system. Women with premature menopause have a 33 % higher risk of heart failure and a 9 % higher risk of atrial fibrillation.
Metabolic syndrome is more common in postmenopausal women than in premenopausal women. It is defined as a cluster of disorders characterized by impaired glucose metabolism, high blood pressure, central obesity, low high-density lipoprotein cholesterol, high low-density lipoprotein cholesterol and triglycerides. It is the activity of low-density lipoproteins and an increase in the level of triglycerides that have serious consequences in the etiology of cardiovascular diseases and the development of atherosclerosis.
Osteoporosis ranks fourth among non-communicable diseases after CVD, cancer and diabetes. Estrogen deficiency during menopause results in increased osteoclast resorptive activity, while osteoblast function remains relatively constant, ultimately resulting in bone loss. In the first postmenopausal years, a woman can lose up to 9–35 % of bone mass, postmenopausal osteoporosis affects between one third to a half of all women.
Conclusions. Menopause is a difficult period in a woman’s life, during which the risk of developing cardiovascular diseases and metabolic disorders increases, as well as almost all somatic diseases are exacerbated. Therefore, proper assessment of such risks is mandatory to improve long-term CVD outcomes. Given this, it is the interdisciplinary interaction that is central to early detection of symptoms and diagnosis of climacteric disorders for the timely prescription of treatment. Physicians working with this contingent of women should apply a comprehensive approach to health care and quality of life preservation during the menopause transition, menopause and postmenopause.
Approaches to evaluation of neurocognitive profile in patients with residual schizophrenia depending on a history of cerebral stroke
Authors: Safonov D. M. , Darii V. I. , Stoianov O. M. , Horodokin A. D. , Gapon K. V.
Published: October 2024

Cerebral stroke consequence assessment in patients with residual schizophrenia is a complex clinical scenario questioning both diagnostic and therapeutic strategies.
Aim. To assess the structure of neurocognitive dysfunctions in patients with residual schizophrenia with pronounced negative symptoms depending on a history of cerebral stroke.
Materials and methods. In the period of 2020–2023, a clinical examination of 47 patients of Zaporizhzhia Regional Clinical Psychiatric Hospital and Veselovsky Psychoneurological Boarding School with a diagnosis of residual schizophrenia (ICD-10: F20.5) was carried out. Study groups were formed: G1 – 9 patients with residual schizophrenia and the history of cerebral stroke; G2 – 36 patients with residual schizophrenia without the history of cerebral stroke.
Results. The DSM-5 neurocognitive functioning assessment system was used in the study, based on which a protocol for rapid testing of neurocognitive functions adapted for patients with residual schizophrenia was developed. The group of patients with the history of cerebral stroke has demonstrated lower results in attention allocation (p ≤ 0.05). This group has also shown relatively poor results in planning (p ≤ 0.05), error correction (p ≤ 0.05), inhibition (p ≤ 0.05) and flexibility (p ≤ 0.05). As concerning verbal ability, worse results of expressive speech (p ≤ 0.05), grammar and syntax (p ≤ 0.05) have been revealed in the group of patients with the history of cerebral stroke. In terms of perceptual-motor functions, the gnosis task has been performed worse (p ≤ 0.05) by the group of patients with the history of cerebral stroke. Differences in emotion recognition and theory of mind were insignificant between groups.
Conclusions. An original neurocognitive function assessment protocol adapted for the Ukrainian-speaking patient population with residual schizophrenia has been developed. The patient population with residual schizophrenia and the history of cerebral stroke or without it has been examined with the use of the developed protocol for the assessment of neurocognitive functions. According to the obtained results, patients with residual schizophrenia and the history of cerebral stroke have demonstrated worse cognitive performance compared to those without the history of stroke.
Effect of adhesives on the sensitivity of dental tissues
Authors: Diudina I. L. , Yanishen I. V. , Tomilin V. H. , Movchan O. V. , Pereshyvailova I. O. , Biriukov V. O.
Published: October 2024

Currently, the issue of increased dentin sensitivity after operations for hard dental tissue preparation during the therapeutic treatment of the carious process, as well as during orthopedic treatment of various types with non-removable dentures, has retained its relevance. Pain management is the prevention of postoperative complication development and ensures high-quality treatment results.
Aim. The purpose of the literature review in this paper was to draw specialists’ attention to the use of low-solvent adhesive systems of various types to manage postoperative sensitivity of hard dental tissues.
Materials and methods. More than 30 literature sources focused on studying action mechanisms of known generations of dental adhesive systems and their effects on changes in postoperative sensitivity of dental hard tissues as a result of a high-quality protective film formation on the dentin surface have been analyzed.
Results. The use of various adhesive systems to reduce postoperative sensitivity of soft tissues with the formation of a high-quality protective film on the dentin surface that seals the dentinal tubules is of great importance for obtaining qualitative treatment results and increasing its effectiveness. However, various reactive substances (solvents, acetone), which are components of most adhesives, have a strong impact on their quality and significantly reduce the indications for their use.
Conclusions. Thus, studying the action mechanisms of adhesives on dental tissues, searching for the formulation of new adhesive systems with a lower solvent content would expand the indications for their use as therapeutic and prophylactic drugs to reduce pain sensitivity of hard dental tissues after preparation.
Pattern of IgM and IgG changes depending on the pathological process duration in patients with autoimmune thyroiditis
Authors: Rahimova R. R. , Mehdiyev L. , Dashdamirova G. S. , Guliyeva S. R. , Azizova U. H. , Rzayeva F. F.
Published: October 2024

The aim of the study was to find out the pattern of IgM and IgG changes in patients with autoimmune thyroiditis depending on the pathological process duration.
Materials and methods. A single-center cross-sectional study with randomization elements enrolled 170 patients with autoimmune thyroiditis, and 65 patients without thyroid pathology or other autoimmune diseases were assigned to sex- and age-matched comparison group (p = 0.6155 and p = 0.3093, respectively). The patients were classified according to thyroid status parameters into subclinical and manifest groups. All study participants were examined on IgM and IgG levels based not only on the clinical form of the disease, but also on the disease duration (up to 5 years and more than 5 years). The control group comprised 65 healthy individuals, including 26 men and 39 women (mean age 38.7 ± 10.8 years).
Results. A slight decrease in IgM levels was observed in patients with subclinical form and longer disease duration, which was 1.5 (1.5; 1.7) g/l with the disease duration of up to 5 years and 1.4 (1.2; 1.4) g/l with the disease duration of more than 5 years, while there were no differences in IgM levels in patients with manifest form with longer disease duration. IgG concentrations were statistically significantly higher in both clinical groups of patients with the disease duration of up to 5 years compared to those in patients with the disease duration of more than 5 years (13 (11; 14) g/l up to 5 years and 11 (10; 12) g/l more than 5 years in subclinical group, p < 0.05); 13 (12; 14) g/l up to 5 years and 12 (10; 15) g/l more than 5 years in manifest group, p < 0.05).
Conclusions. A downward trend in IgG concentrations is noted with the disease progression and longer duration, while IgM levels are uninformative.
The spectrum of pathogens and their resistance in patients with malignant liver and biliary tract tumors with biliary obstruction after extensive liver resections
Authors: Romaniuk V. P. , Kotenko O. H. , Solovyova G. A.
Published: October 2024

The aim of the study to assess the resistance of infectious complication pathogens to antibacterial drugs in patients after major liver resection (MLR) with or without biliary obstruction.
Material and methods. A total of 105 patients were assigned to 2 groups: group 1 consisted of 53 patients (7 – with hepatocellular carcinoma (HCC), 28 – with cholangiocarcinoma (CC), 18 – with metastases of colorectal cancer) with biliary obstruction; group 2 – 52 patients (25, 10 and 17, respectively) without biliary obstruction.
Results. A microbiological examination of urine, blood, sputum, bile, pharyngeal and wound samples was performed after MLR.
Conclusions. Patients with HCC and CC with biliary obstruction after MLR had infectious complications in 100.0 % of cases, patients without biliary obstruction – in 25.7%; Gram-positive microorganisms were statistically significantly more often isolated from them: Enterococcus faecalis in 17.1 % (р1,2 = 0.01); gram-negative microorganisms: Escherichia coli in 5.7 % (р1,2 = 0.05), hemolytic Escherichia coli in 5.7 % (р1,2 = 0.05), Pseudomonas aeruginosa in 5.7 % (р1,2 = 0.05); fungi in 8.6 % (р1,2 = 0.04); significantly more often, Enterococcus faecalis was isolated from blood in 5.7 % (р1,2 = 0.05), Enterococcus faecium – from urine in 8.6 % (р1,2 = 0.05), Candida albicans – from wounds in 5.7 % (р1,2 = 0.05) and sputum in 8.6 % (р1,2 = 0.02).
Drimia maritima flowers as a source of biologically potent components: Optimization of bioactive compound extractions, isolation, UPLC–ESI–MS/MS, and pharmacological properties
Authors: Bensaci Cheyma , Belguidoum Mahdi , Khattabi Latifa , Abid Asma , Touahria Tatou , Zahnit Wafa , Harchaoui Lilya , Rahmani Zineb , Boussebaa Walid , Laichi Yacine , Belfar Assia , Farah Mohammad Abul , Al-Anazi Khalid Mashay , Ali Ahmad
Published: October 2024

An examination and study were carried out in order to investigate the beneficial advantages of Drimia maritima aqueous and hydroalcoholic extracts (DmAE/DmHE). The chemical profile was determined using rapid ultrahigh performance liquid chromatography–electrospray ionization tandem mass spectrometry analysis, revealing the presence of 31 bioactive components. Four different methodologies were employed to conduct a series of antioxidant testing. The DmAE and DmHE have exhibited a noteworthy antioxidant capacity, as evidenced by their significant half maximal inhibitory concentration values across several activities, comparable to the performance of DmAE. However, D. maritimia does not exhibit any reduction in power activity. Furthermore, a notable suppression of the critical enzyme (urease), which serves a role in various health conditions, including hyperpigmentation and pathological functional abnormalities, was discovered for the first time. A significant inhibition of the urease enzyme was observed for DmAE at a value of 122.04 ± 1.42. D. maritima had strong sun protection properties and demonstrated effective anti-inflammatory effects. The pharmacological activities of DmAE and DmHE were also conducted in vivo using analgesic and anti-inflammatory tests, and the oral toxicity was determined in accordance with the Organisation for Economic Cooperation and Development 425 Guideline. Intoxication symptoms were not observed in any of the treated animals following oral administration of DmAE and DmHE at 2,000 mg/kg. Conversely, the oral administration of DmAE and DmHE at varying concentrations inhibits the development of paw edema at different concentrations, which results in a substantial reduction in the acetic acid-induced writhing test. Chemical and spectroscopic investigation of D. maritima flowers resulted in the isolation of sucrose, and it was never isolated in this plant species and Scilliphäosidin-3-O-β-d-glucoside, using proton nuclear magnetic resonance and carbon 13 nuclear magnetic resonance spectroscopy. As indicated by these findings, D. maritima has the potential to be utilized in a wide range of applications, including as a nutritional supplement, as an alternative treatment for a variety of physiological conditions and pathologies, and as a preventive and healing agent.
A geometric approach to apriori estimates for optimal transport maps
Authors: Brendle Simon , Léger Flavien , McCann Robert J. , Rankin Cale
Published: October 2024

A key inequality which underpins the regularity theory of optimal transport for costs satisfying the Ma–Trudinger–Wang condition is the Pogorelov second-derivative bound.
This translates to an apriori interior

C
1

C^{1}

estimate for smooth optimal maps.
Here we give a new derivation of this estimate which relies in part on Kim, McCann and Warren’s observation that the graph of an optimal map becomes a volume maximizing spacelike submanifold when the product of the source and target domains is endowed with a suitable pseudo-Riemannian geometry that combines both the marginal densities and the cost.
Value Perception of the Chronotope in the Author’s Discourse (Based on the Works of Kazakh Authors)
Authors: Zhiyenalina Aizhan , Anishchenko Olga , Zharkynbekova Sholpan
Published: October 2024

The relevance of the study is due to the increased interest of researchers in the study of the chronotope category in recent decades, and the lack of a unified approach to the analysis of the chronotope in the scientific community. The purpose of the article is to study the value aspects of space-time in the author’s mind through the study of the linguistic representation of the chronotope in Kazakh fiction and journalistic prose. To achieve the goal, the article uses a structural, biographical, hermeneutical, and comparative method. The article studies the spatiotemporal organization of literary texts of Kazakh writers: “Diary of a trip to Issyk-Kul” by Sh.Sh. Ualikhanov, “Tuyuk su” by G.K. Belger,” and “The tale of a century-old steppe man” by B.T. Alimzhanov. Based on the study of literary texts, using the indicated methodology, the key chronotopes for each selected work are identified. It has been established that the category of space-time in all the studied works is characterized by complexity, diversity, and multidimensionality. The practical significance of the study lies in the fact that the method of analysis of the chronotope category presented in the article can be applied in the study of the chronotope in literary texts.
Some results in prime rings involving endomorphisms
Authors: Boua Abdelkarim , Raji Abderrahmane , El hamdaoui Mohammadi
Published: October 2024

In this paper, we generalize some results from [M. Ashraf and S. Ali,
On left multipliers and the commutativity of prime rings,
Demonstr. Math. 41 2008, 4, 763–771] and present our contribution to the study of endomorphisms. In particular, we prove that a prime ring must be an integral domain if it admits endomorphisms and multipliers satisfying some algebraic identities on non-zero ideals. As a consequence of our main theorems, many known results can either be generalized or deduced. Furthermore, an example is given to show that the necessity of the primeness assumption imposed on the hypotheses of various theorems cannot be unnecessary.
Echinacoside inhibits PASMCs calcium overload to prevent hypoxic pulmonary artery remodeling by regulating TRPC1/4/6 and calmodulin
Authors: Zhao Enqi , Wang Jinyu , Zhao Yuefu , Xia Qingqing , Wang Hongmai , Li Zhanqiang , Li Cen , Gai Xiangyun
Published: October 2024

Research indicates that hypoxic pulmonary hypertension (HPH) potentially stimulates the sympathetic nervous system, which may increase norepinephrine (NE) release and cause excessive Ca2+ influx into pulmonary artery smooth muscle cells (PASMCs), leading to calcium overload and abnormal PASMC proliferation, factors closely associated with pulmonary vascular remodeling (PVR). This study investigates the potential mechanisms underlying echinacoside (ECH) treatment in HPH.
Future prospects of gold nanoclusters in hydrogen storage systems and sustainable environmental treatment applications
Authors: Alkhursani Sheikha A. , Aldaleeli Nadiah Yousef , Al-Gahtany Samera Ali , Ghobashy Mohamed Mohamady , Alharthi Sarah , Amin Lamiaa Galal , Mahmoud Safwat A. , Boraie Waleed E. , Attia Mohamed S. , Madani Mohamed
Published: October 2024

Gold nanoclusters (AuNCs), with sizes below 2 nm, have emerged as remarkable nanomaterials exhibiting unique optical, electronic, and chemical properties. Their ultra-small size imparts advantageous characteristics, including high surface area, tunable fluorescence, and excellent biocompatibility, making AuNCs highly promising for diverse applications. This article explores recent advancements in leveraging AuNCs to address critical challenges in clean energy storage and environmental remediation. For energy storage, AuNCs boost the performance of Li-based batteries by facilitating rapid electron transfer kinetics and limiting polysulfide shuttling. The review delves into mechanistic insights governing AuNC–hydrogen interactions, various synthetic approaches for tailoring AuNCs, and their emerging applications as advanced electrodes, efficient catalysts, and conductive additives enabling improved charge storage capabilities. Additionally, using plasmonic effects and hot carrier generation induced by AuNCs shows tremendous potential in photocatalytic water splitting for clean hydrogen fuel production. For environmental applications, AuNCs enable the degradation of persistent organic pollutants, heavy metal ion detection at part-per-trillion levels, and solar-driven water purification, relying on plasmon-enhanced hot carrier processes. However, the long-term ecological impacts of AuNCs remain unclear. This study thus underscores the need for further toxicological assessments and life cycle analyses to promote sustainable AuNC-based technologies through responsible research and innovation. Overall, it highlights the versatile applicability of AuNCs in addressing critical energy and environmental challenges.
Csoportkiválasztási módszerek vizsgálata rugalmas projekttervezési megközelítések esetén
Authors: KOSZTYÁN Zsolt Tibor , HARTA Péter , SZALKAI István , OBERMAYER Nóra
Published: October 2024

Napjainkban a legtöbb szoftverprojekt rugalmas, például agilis, extrém vagy hibrid környezetben valósul meg. Ezekben a környezetekben a projektekben szereplő tevékenységek végrehajtásához prioritásokat rendelnek. A kötött végrehajtási struktúra helyett pedig általában a rugalmas végrehajtás a jellemző, ahol a tevékenységek végrehajtási sorrendje a projekt előrehaladtával változhat. Ráadásul a rugalmas megközelítéseket egyre inkább alkalmazzák nem szoftverprojektek esetén is. A legtöbb szoftverprojekt-ütemezési probléma (angolul: Software Project Scheduling Problem, SPSP), amely egy tágabb problémakör, a projektütemezési probléma (Project Scheduling Problem, PSP) része, fix projektvégrehajtási struktúrát feltételez. Ha ezeket a hagyományos módszereket használjuk, nem tudjuk modellezni és így megérteni, hogy bizonyos rugalmas, pl. agilis irányelvek miért elengedhetetlenek, és hogyan segítik a projektmenedzsmentet. Kutatásunk bemutatja, hogy egy mátrixalapú projekttervezési megközelítés hogyan modellezheti a csoportszerepeket és a munkavállalók közötti szinergiákat. A szinergiaalapú szoftverprojekt-ütemezés problémáját kibővítve a tanulmány bemutatja az autonóm csoportszerepek kiválasztásának hatásait a DISC viselkedéstípusokon keresztül. A javasolt modell képes kezelni (1) a rugalmas projekteket, (2) a munkavállalók közötti szinergiákat és (3) a kemény és a puha készségek (soft and hard skill) közötti különbséget. Tanulmányunk hidat képez az operációkutatási modellek, a csoportszerepek modellezése, valamint a rugalmas projektütemezési megközelítések között. A javasolt módszert egy valós vállalati esettanulmányon keresztül értékeljük. Az eredményeket összehasonlítjuk a meglévő, nem szinergiaalapú projektütemezési módszerekkel. Vizsgálataink eredménye nemcsak azt mutatja meg, hogy a munkavállalók közötti pozitív szinergia csökkentheti a projekt átfutási idejét, hanem azt is, hogy a legjobb megoldást mely csoportszerep kiválasztása adja.
Could the impact of a public policy help us evaluate the changes that have been implemented? An analysis of non-take-up of Spanish minimum income benefits
Authors: Muñoz-Higueras Diego , Granell Pérez Rafael , Fuenmayor Fernández Amadeo
Published: October 2024

This paper provides new evidence on why people who are eligible to receive a benefit do not apply for it, an occurrence most commonly referred to as “non-take-up”. It examines the relationship between the characteristics of the Guaranteed Minimum Income (GMI) and the non-take-up rate achieved by these benefits. This study looks into five main causal conditions in the design of a GMI: the amount of the benefit, the duration of the benefit, the administration's resolution times, the documentation requirements and an aggregation of supply side factors. The sample used corresponds to the 19 existing regional GMI programmes in Spain. The existence of relationships between causal conditions is tested using the Fuzzy-set Qualitative Comparative Analysis (FsQCA) methodology. The results show that there are three different combinations of conditions that result in less than 45% coverage of a GMI.
With these results it is possible to evaluate ex ante whether the Spanish Minimum Vital Income (MVI) can avoid the non-take-up problem that other GMIs have in Spain. We find that the new MVI does not follow any of the combined conditions that lead to the failings of the GMI’s coverage rate.
Subsidies, Land Size and Agricultural Output
Authors: Kyriazi Foteini , Thomakos Dimitrios D. , Rezitis Antonis
Published: October 2024

In this paper we make a two-fold contribution. We first examine the impact of agricultural subsidies on Greece, using a detailed, micro-panel dataset for four years, 2008, 2010, 2012, and 2014. Our analysis is illuminating at least two aspects of subsidies: first, it suggests that an incentive scheme for promoting a larger farm size would have a probable positive effect on agricultural value-added; second, that subsidies today produce the larger impact on future value-added for the top two percentiles of the subsidy distribution. The adjacent contribution is the presentation of a new theoretical model on subsidies where we examine the impact of land size and taxes on them. We estimate the model’s hyperparameters, using Greek data from the FADN database. Our new theoretical results, combined with the empirical analysis on the first part, suggest that agricultural subsidies are of dubious economic value, in magnitude and effect, and distort the incentives for returns-to-scale and increased working hours in Greek agriculture
Pure Theories of Policy Mix : Nordhaus's Destructive Game and the Case of High Inflation
Authors: Le Page Jean-Marie
Published: October 2024

Nordhaus’s theory of the “destructive game” (1994) is a central analysis of the policy mix. His theory showed that a lack of cooperation between the central bank and the fiscal authorities would result in the budget deficit being higher and the inflation rate lower than either of the authorities would want. It explains indeed why Central Bank independence can lead to these suboptimal results even when the goals of monetary policy are set by the fiscal authority. But the construction of this model was based on the existence of a Phillips-type relationship between the inflation rate and the unemployment rate, which has lost its relevance in the contemporary economy. Today, the prospect of a rise in the inflation rate leads to an increase in interest rates and a subsequent rise in the unemployment rate. This paper intends to show that the main conclusions of the Nordhaus model are preserved, with a model based on an increasing relationship between the inflation rate and the unemployment rate. Moreover, as in traditional macroeconomic theory, according to this version of the model, the unemployment rate is the same in steady states for different strategic equilibria.
The parallels of Latvian and Lithuanian historiography: the attempts of cooperation and problems in the period between the two Wars
Authors: Šimkus Robertas
Published: October 2024

The object of this study is the links and cooperation between Latvian-Lithuanian historians. Presumptions of historiographic parallels are being ventilated in the study on institutional and individual basis so that the links between past Latvian-Lithuanian historians would be identified.
The study describes the ways how cooperation of Lithuanian-Latvian historians was evidenced, when there were the most favourable circumstances: in the context of academic institutions' launching and practice. The reasons for national historiography's insularity are outlined, which did not enable the cooperation of academic historians to be developed. There are no specific cooperation facts highlighted in the study, but trends, the cooperation opportunities during the academic historiography genesis in Latvia and Lithuania (during interwar). The main Latvian-Lithuanian historiography trends presented in a study reflect well up till now characteristic institutional - academic, social indifference of Latvian-Lithuanian historiography.
"Seventeen moments of spring" or how KGB subverted Soviet Union
Authors: Burinskaitė Kristina
Published: October 2024

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Factors influencing Industry 4.0 technologies’ suitability for adoption in marketing functions within the SMEs
Authors:   , Blažinauskytė Evelina
Published: October 2024

Veiksniai, turintys įtakos 4.0 Pramonės revoliucijos technologijų įgalinimo tinkamumui rinkodaros veiklose smulkiose ir vidutinėse įmonėse
Citrus Genus and its Pharmacological Activities: A Review
Authors:   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India, Singh Parwinder , Sharma Rahul Kumar ,   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India, Kaur Ramandeep ,   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India, Mehta Puskar ,   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India, . Pankaj ,   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India, Sharma Neelam ,   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India, Sharma Shailesh ,   Department of Pharmaceutical Research, Amar Shaheed Baba Ajit Singh Jujhar Singh, Memorial College of Pharmacy (An  Autonomous College), BELA (Ropar), Punjab, India
Published: October 2024

Background: This review underscores the global distribution of citrus plants, diverse phytochemical composition, pharmacological properties and their uses. Purpose: This paper reviewed the originating of Citrus genus from northeastern and central Australia, island Southeast Asia, near Oceania, and various subtropical and tropical regions in Asia. Paper elaborates the diverse phytochemical composition of citrus species contributes to their therapeutic characteristics. Citrus fruits, widely consumed and rich in nutrients and phytochemicals, have been linked through epidemiological studies to a reduced risk of several diseases. Methods: The role of citrus plants according to their pharmacological activities explained in the paper with their possible mechanism of action. Results: The citrus fruits contain phenolic acids, flavonoids, and coumarins ac chief chemical constituents. Pharmacologically, the citrus genus exhibits a spectrum of activities, including antioxidants, hypoglycaemic, antimicrobial, anticancer, antiulcer, anti-inflammatory, analgesic, anthelmintic, hepatoprotective, hypolipidemic, estrogenic, and neuroprotective effects. Conclusions: Citrus plants have been shown in traditional and ethno medicinal literature to be especially beneficial in a variety of diseases.
Estranhamento (Entfremdung), subjetividade e emancipação humana em Para uma ontologia do ser social de Lukács
Authors: Furtado de Araujo Paulo Henrique
Published: October 2024

O artigo oferece notas iniciais a respeito do modo pelo qual Lukács aborda, em Para uma ontologia do ser social, a categoria estranhamento em sua ligação com as categorias trabalho, objetivação, alienação, reificação e ideologia. Por este caminho, toca em questões relacionadas com o processo de formação da personalidade humana e de sua subjetividade ou consciência, da consciência atribuída, da elevação do indivíduo preso à generidade em si até a generidade para si e do acaso. Trata da emancipação humana e, nessa trajetória, arrisca alguns comentários críticos a partir da figuração de mundo oferecida pela leitura de Marx feita por Moishe Postone.
What human life is according to Hans Jonas?
Authors: Buenos Aires de Carvalho Helder
Published: October 2024

The paper aims to show the centrality of homo faber in the configuration of the human within the scope of Hans Jonas’s philosophy of life, that is, in his philosophical anthropology. Although Jonas presents a substantive critique of homo faber in the context of intensely technological contemporary societies, diagnosing that modern technique has become a determinant of human life as a whole and, therefore, despite the enormous benefits that it has brought with it, the deleterious impacts it causes not only for humans, but for life on the entire planet, it is not a technophobic perspective, of denial of technique, but of asking about which technique we want. In this sense, homo faber would remain central in his philosophical anthropology and his critique of modern technique as a main point of his ethics of responsibility.
Penggunaan GPN Sebagai Metode Pemungutan PPH Pada Pelaku Usaha E-Commerce
Authors: Maulaa Vida Nikmal , Furqon Imahda Khoiri
Published: October 2024

Perkembangan teknologi yang pesat membawa dampak terhadap perubahan pola pikir dan perilaku serta bermacam kegiatan yang ada di lingkungannya. Revolusi industri 4.0 memberikan akibat yang besar di era globalisasi ini, terpenting kemajuan terhadap teknologi dan pertumbuhan ekonomi di Indonesia yang mana dalam hal ini perdagangan dapat diselenggarakan melalui media elektronik. Kemajuan bisnis tidak diimbangi dengan kemajuan hukum yang setara. Dimana pemerintah mengalami kesulitan mengenai masalah pajak penghasilan dari e-commerce. Untuk mengoptimalkan pemungutan pajak penghasilan, Dirjen Pajak berkolaborasi dengan Bank Indonesia untuk mengintegrasikan sistem pembayaran GPN. GPN diharapkan mampu mencatat dan menyimpan seluruh transaksi yang telah dilakukan pengusaha melalui media elektronik untuk memudahkan pemerintah dalam mengetahui kesanggupan pengusaha menjadi wajib pajak. Penelitian ini menggunakan teknik kepustakaan dalam pengumpulan data, teknik ini dengan memahami dan menganalisa permasalahan dengan beberapa jurnal, buku, dan majalah sebagai referensi yang digunakan. Penelitian ini menyimpulkan untuk mengetahui banyaknya pemungutan pajak penghasilan pada pelaku usaha e-commerce , jika tidak adanya kolaborasi atau peraturan lainnya maka penggunaan PPh untuk optimalisasi tidak akan berhasil.
Purification and characterization of laccase from the white-rot fungus Pleurotus pulmonarius VAST02.42
Authors: Dang Thu Quynh , Le Viet Hoang , Le Mai Huong , Do Huu Nghi
Published: October 2024

Laccase (EC 1.10.3.2) is a multi-copper oxidase that utilizes molecular oxygen to oxidize phenolic rings to phenyloxy radicals. Due to its capability to use a wide variety of phenolic and non-phenolic substrates, this oxidative enzyme has potential applications in the food, pharmaceutical, and environmental industries. In the present study, a laccase (PleuLac) from the white-rot fungus Pleurotus pulmonarius VAST02.42 that was newly isolated from Muong Phang special-use forest, was purified and studied on physical-chemical properties. After ultrafiltration (10, 30 kDa cut-off), laccase was successfully purified to apparent homogeneity (specific activity of 28 U.mg-1) by using the anion-exchange chromatography (e.g., DEAE-Cellulose, HiTrapTM Q XL columns) and size-exclusion chromatography (Superdex G-100). After the final purification step, a total activity of 532 U was acquired with a recovery of 8.3 % and purity of 9.6-fold. The molecular weight (Mw) of PleuLac was determined to be 35 kDa by SDS-PAGE electrophoresis. This enzyme exhibited an optimal activity at 40 ºC and pH of 5.5; it is stable at 25 ºC after incubation of 120 min and pH of 5.0. This purified and characterized PleuLac will serve for further application study on catalyzing the oxidation of essential oils to value-added products in combination with peroxidase.