bluuebunny/crossref_metadata_2025_split huggingface dataset:
The validation of a commercial enzyme-linked immunosorbent assay and the effect of freeze-thaw cycles of serum on the stability of cortisol and testosterone concentrations in Aceh cattle
Authors: Gholib Gholib , Wahyuni Sri , Akmal Muslim , Hasan Muhammad , Agil Muhammad , Purwantara Bambang 
Published: February 2020

Background: To obtain accurate measurements of cortisol (C) and testosterone (T) in Aceh cattle, commercial enzyme-linked immunosorbent assay (ELISA) kits need to be carefully validated. Moreover, repeated freeze-thaw cycles during the storage of the samples may affect the stability of the hormones in the serum. Here, the reliability of C and T concentration measurements in the serum of Aceh cattle, was tested using commercial C and T ELISA kits designed to measure human C and T concentrations. Further, the effect of repeated freeze-thaw cycles on the stability of C and T concentrations in the serum was evaluated. Methods: Commercial C (Cat. no. EIA-1887) and T (Cat. no. EIA-1559) ELISA kits from DRG Instruments GmbH were validated through an analytical validation test (i.e., parallelism, accuracy, and precision) and a biological validation test (for C: effect of transportation on the C excretion; for T: the concentrations of T between bulls and cows). To test the effects of freeze-thaw cycles, cattle serum was subjected to the following treatments: (i) remained frozen at -20OC (control group); (ii) exposed to freeze-thaw cycles for two, four, six, and eight times (test groups). Results: Parallelism, accuracy, and precision tests showed that both C and T ELISA kits adequately measured C and T in the serum of Aceh cattle. Concentrations of C post-transportation were significantly higher than pre-transportation (p<0.05). Concentrations of T in bulls were significantly higher than in cows (p<0.05). After four to eight freeze-thaw cycles, C concentrations were significantly lower compared to the control group (all p < 0.05). In contrast, T concentrations remained stable (all p>0.05). Conclusions: Commercial C (EIA-1887) and T (EIA-1559) ELISA kits are reliable assays for measuring serum C and T, respectively, in Aceh cattle. Repeated freeze-thaw cycles significantly affected the stability of serum C, but did not for T.
Nowe znalezisko z Jass jako źródło do analizy obrazu "Chrzest Armenii" pędzla Teodora Axentowicza
Authors: Zięba Andrzej A. 
Published: February 2020

New Discovery in Iaşi as a Source for Analysis of the "Picture Baptism" of Armenia by Teodor Axentowicz
The author compares the oil painting showing the baptism of Thyristates III, King of Armenia, recently found in the Armenian-Apostolic church in Iaşi and attributed (due to the inscription on the back of the canvas) to Teodor Axentowicz, to the work of the same painter on the same subject that is currently displayed in the Roman Catholic church of St. Peter and St. Paul in Gdańsk. He claims that the painting from Iaşi is probably a copy of Axentowicz’s original work from around 1901 and it fully shows his original composition that was intended for the Armenian Catholic altar in the Roman Catholic church in Suceava. By contrast, the painting from Gdańsk only depicts the central part of the original. The reasons for this reduction remain unknown. Perhaps this was done by the buyer to adapt the image to the altar on which it was exhibited, or by the author himself to enhance the artistic value of the new version. The article also talks about the identification of another painting that captured the baptism of the Armenian king. The work was created in Lwów in 1839 by another Polish painter, Feliks Kasper Orlikowski, and it was intended for an unspecified Armenian church in Suceava. It may be that it was meant for the Armenian monastery Hagigadar located in the suburbs of the city.
Remarks on the Blacks in the Fatimid Army, Tenth–Twelfth Century CE
Authors: Zouache Abbès 
Published: February 2020

AbstractIn this article, I revisit some aspects of the organization of the Fatimid army, and more specifically to the role played by its black contingents, who are still often considered the most faithful supporters of the dynasty. Wherever they came from and regardless of their social and legal status, black soldiers, whose Egyptian-ness was indisputable, were major players in the history of the Fatimid Caliphate. Medieval authors, who sometimes conveyed negative representations linked with racial bias, and who are not necessarily accurate in dealing with other races, even acknowledged this role.
Uznanie dziecka według przepisów Kodeksu rodzinnego i opiekuńczego w świetle regulacji prawa prywatnego międzynarodowego
Authors: Uchańska Joanna 
Published: February 2020

The paper discusses the current issues on recognition of paternity in the light of children’s rights. It identifies the proper tools necessary for determining paternity and maternity and highlights their growing importance in connection with common migration and free movement of persons in the EU. The issue of establishing the law applicable to the content or the form of declaration of paternity is presented based on judicial practice. 34 E. Skrzydło-Tefelska, op. cit., s. 149–150.106 | Przegląd Prawniczy Uniwersytetu im. Adama Mickiewicza The paper describes the relationship between recognition of paternity and the process of establishing citizenship and the conditions that must be fulfilled to obtain legal residence in Poland. The conclusions de lege ferenda call for changes in the acquisition of Polish citizenship by operation of law by a child who has been recognized by a man of Polish citizenship. Currently, this possibility is limited by the annual date on which it is necessary to recognize to change a citizenship of a child by law
Between Prudential Regulation and Shareholder Value: An Empirical Perspective on Bank Shareholder Equity (2001-2017)
Authors: Biondi Yuri , Graeff Imke J. 
Published: February 2020

Abstract
We analyse the effects of changes in regulatory capital requirements under Basel III on the dynamic evolution of bank shareholder equity over time. Evidence from managerial and regulatory reports shows that bank shareholder equity stands between micro-prudential regulatory capital requirements and managerial pursuit of equity economising strategies. Shareholder value strategies see shareholders as the equity investment remuneration recipients. Micro-prudential regulators, in turn, address them as equity investment providers. With opposing cash streams, one orientation puts the other to a test. The article visualises this conflict by analysing the actual shareholder contribution to the bank equity position in nine case studies of European financial institutions between 2001 and 2017; our evidence-based financial analysis applies an innovative method to data directly extracted from financial statements, in order to measure this equity position evolution and assess bank equity dynamics in light of revised regulatory capital requirements and persistent assurance of shareholder value thriving in managerial reports. The choice of in-depth analysis of a sample of relevant case studies overcomes the absence of detailed data on changes in bank equity in existing databases.
Nuciferine prevents hepatic steatosis by regulating lipid metabolismin diabetic rat model
Authors: Ning Qian , Wang Yang , Zhang Yi , Shen Guozhi , Xie Zhenglu , Pang Jie 
Published: February 2020

AbstractObjectiveThis study investigatesthe nuciferine capacity to regulate the liver’s lipid metabolism regarding steatosis and injury in STZ-induced diabetic rats.Materials and MethodsThe rats were randomly divided into groups control, diabetic and nuciferine 200 mg/kg/ day treatment. After 4 days of STZ injection, the nuciferine group was treated and administered via oral gavages for 4 weeks. At the end of experiment, blood, liver, myocardial and muscular samples were collected.ResultsNuciferine-treated significantly increased the body weight from 339.4g to 367.8g, but significantly decreased the food and water intake compared with diabetic rats. Also, the nuciferine-treated rats had significantly decreased TC, TG, and FFAs in the liver compared with the diabetic group, especially the serum markers of blood glucose. These were associated with the gene expression related to lipogenesis which was significantly down-regulated; the gene expression involved in lipolysis and fatty acid β-oxidation was significantly up-regulated. Discussion andConclusionThe data provide evidence that nuciferine supplementation could protect the liver by regulating lipid metabolism gene expression resulting in decreasing the steatosis and injury in diabetic rat. Thus, nuciferine could be developed as a diabetic adjuvant food additive in future.
Comparative Simulation Study of Multi Stage Hybrid All Optical Fiber Amplifiers in Optical Communications
Authors: Amiri IS , Rashed Ahmed Nabih Zaki , Yupapin P. 
Published: February 2020

Abstract
This study clarifies the comparison between hybrid all optical fiber amplifiers in single-stage and multi-stage amplification. EDFA/Raman, Raman/EDFA/Raman, and EDFA/Raman/EDFA configurations are employed for upgrading optical communication systems. Single-stage Raman amplifiers clarifies very better performance than single-stage EDFA amplifier. Multi-stage Raman/EDFA/Raman also outlines very better performance than other hybrid configuration up to 475 km distance. Single-stage Raman amplification has outlined maxi. Q factor up to 218.392 for 250 km distance and 11.937 up to 475 km propagation range. So hybrid all optical amplifiers are essentially for upgrading optical system performance efficiency.
Impact Analysis of the Number of Core on Hexagonal Multicore Fibre
Authors: Vyas Ajay Kumar 
Published: February 2020

Abstract
The multicore fibre (MCF) is an effective and auspicious technology to overawe the limitation of the single-mode fibre. One of the important applications of MCF is power over fibre. In this paper, we have been designed eight different hexagonal structures by using 6, 7, 8, 9, 10, 11, 12 and 13 cores MCF. Those designs are categorized as even core multicore fibre (ECMCF) for 6, 8, 10 and 12 cores and odd core multicore fibre (OCMCF) for 7, 9, 11 and 13 number of cores. We also studied the impact analysis of odd or even number of the cores. The proposed designs having 140 µm diameter, large effective area of 1256 µ2m and two pitches d1=20 µm and d2=10 µm. The comparative analysis has been done by core multiplicity factor, electric field, coupled power, cross overpower parameter calculated for 10,000 samples. The hexagonal core shape MCF shows better performance if the number of the core in even number.
From symmetric to asymmetric bowtie nanoantennas: electrostatic conformal mapping perspective
Authors: Pacheco-Peña Victor , Alves Rúben A. , Navarro-Cía Miguel 
Published: February 2020

Abstract
Plasmonic nanoantennas have revolutionized the way we study and modulate light–matter interaction. Due to nanofabrication limitations, dimer-type nanoantennas always exhibit some degree of asymmetry, which is desirable in some cases. For instance, in sensing applications, asymmetry is sometimes induced by design in plasmonic nanoantennas to favor higher order nonradiative modes with sharp Fano line shapes. Regardless of the actual origin of the asymmetry, unintentional or intentional, an analytical frame that can deal with it in a seamless manner would be beneficial. We resort to conformal mapping for this task and we track the influence of the degree of asymmetry of the circular sectors composing gold bowtie nanoantennas on the nonradiative Purcell enhancement of a nearby nanoemitter. This manuscript reviews the contributions of conformal mapping to plasmonic nanoantennas and illustrates the advantages of the elegant analytical solution provided by conformal mapping to grasp physical insights, which can serve as a springboard for new plasmonic asymmetric nanoantenna designs.
Crystal structure, Hirshfeld surfaces, topology, energy frameworks and dielectric studies of 1-(2-chlorophenyl)- 3,3-bis(methylthio)prop-2-en-1-one
Authors: Madan Kumar Shankar , Hemraju Byrapura Chandregowda , Anil Seegehalli Manjegowda , Manjunatha Neralekere Kenchegowda , Swamy Menasagere Thammannagowda , Lokanath Neratur Krishnappagowda , Al-Ghorbani Mohammed , Al-Zaqri Nabil , Alsalme Ali 
Published: February 2020

AbstractThe title compound 1-(2-chlorophenyl)-3,3-bis(methylthio)prop-2-en-1-one (1) have been synthesized, crystallized and characterized using FT-IR,1H NMR,13C NMR, LCMS and confirmed by single crystal X-ray diffraction method. In addition, the intermolecular interactions in the crystal structure are analyzed using Hirshfeld surfaces computational method. The (1) crystallizes in a monoclinic crystal system (space groupP 21/c) with cell parametersa = 17.0132(9) Å,b = 8.6521(4) Å,c = 8.2815(7) Å,β = 95.512(6) ° andZ = 4. Intermolecular hydrogen bonds/interactions of the type C · · · H · · · O, C–H · · · S, C–H · · · Cg and C–Cl · · · Cg stabilize the crystal structure. The intermolecular interactions responsible for crystal packing are analyzed using Hirshfeld surfaces computational method, 2D finger print plots, electrostatic potential surfaces, toplogy surfaces [curvedness (C) and shape index (S), enrichment ratio (E) and 3D energy frameworks]. In addition the dielectric studies were performed for the title molecule. The crystal structure database (CSD) analysis was carried out for structural conformation and crystal packing confirmation. Overall structural studies confirmed that the intermolecular interactions of the type S · · · S chalocogen bonds are involved in crystal packing in addition to the C11–H11 · · · O1, C10–H10B · · · O1, two C10–H10 · · · S1, C4–H11 · · · Cg1 and C1–Cl1 · · · Cg1 interactions.
The untypical high-pressure Zintl phase SrGe6
Authors: Schwarz Ulrich , Castillo Rodrigo , Hübner Julia M. , Wosylus Aron , Prots Yurii , Bobnar Matej , Grin Yuri 
Published: February 2020

Abstract
The binary strontium germanide SrGe6 was synthesized at high-pressure high-temperature conditions of approximately 10 GPa and typically 1400 K before quenching to ambient conditions. At ambient pressure, SrGe6 decomposes in a monotropic fashion at T = 680(10) K into SrGe2 and Ge, indicating its metastable character. Single-crystal X-ray diffraction data indicate that the compound SrGe6 adopts a new monoclinic structure type comprising a unique three-dimensional framework of germanium atoms with unusual cages hosting the strontium cations. Quantum chemical analysis of the chemical bonding shows that the framework consists of three- and four- bonded germanium atoms yielding the precise electron count Sr[(4bGe0]4[(3b)Ge−]2 in accordance with the 8 − N rule and the Zintl concept. Conflicting with that, a pseudo-gap in the electronic density of states appears clearly below the Fermi level, and elaborate bonding analysis reveals additional Sr–Ge interactions in the concave coordination polyhedron of the strontium atoms.
Synaptic Integration of Thalamic and Limbic Inputs in Rodent Gustatory Cortex
Authors: Stone M. E. , Fontanini A. , Maffei A. 
Published: February 2020

AbstractNeurons in the gustatory cortex (GC) process multiple aspects of a tasting experience, encoding not only the physiochemical identity of tastes, but also their anticipation and hedonic value. Information pertaining to these stimulus features is relayed to GC via the gustatory thalamus (VPMpc) and basolateral amygdala (BLA). It is not known whether these inputs drive separate groups of neurons, thus activating separate channels of information, or are integrated by neurons that receive both afferents. Here, we used anterograde labeling andin vivointracellular recordings in anesthetized rats to assess the potential convergence of BLA and VPMpc inputs in GC, and to investigate the dynamics of integration of these inputs. We report substantial anatomic overlap of BLA and VPMpc axonal fields across GC, and identify a population of GC neurons receiving converging BLA and VPMpc inputs. Our data show that BLA modulates the gain of VPMpc-evoked responses in a time-dependent fashion and that this modulation is dependent on the recruitment of synaptic inhibition by both BLA and VPMpc. Our results suggest that BLA shapes cortical processing of thalamic inputs by dynamically gating the excitatory/inhibitory balance of the GC circuit.
The derivative connecting problems for some classical polynomials
Authors: Ramskyi A. , Samaruk N. , Poplavska O. 
Published: February 2020

Given two polynomial sets $\{ P_n(x) \}_{n\geq 0},$ and $\{ Q_n(x) \}_{n\geq 0}$ such that $$\deg ( P_n(x) ) =n, \deg ( Q_n(x) )=n.$$ The so-called the connecting problem between them asks to find the coefficients $\alpha_{n,k}$ in the expression $\displaystyle Q_n(x) =\sum_{k=0}^{n} \alpha_{n,k} P_k(x).$ Let $\{ S_n(x) \}_{n\geq 0}$ be another polynomial set with $\deg ( S_n(x) )=n.$ The general connection problem between them consists in finding the coefficients $\alpha^{(n)}_{i,j}$ in the expansion $$Q_n(x) =\sum_{i,j=0}^{n} \alpha^{(n)}_{i,j} P_i(x) S_{j}(x).$$ The connection problem for different types of polynomials has a long history, and it is still of interest. The connection coefficients play an important role in many problems in pure and applied mathematics, especially in combinatorics, mathematical physics and quantum chemical applications. For the particular case $Q_n(x)=P'_{n+1}(x)$ the connection problem is called the derivative connecting problem and the general derivative connecting problem associated to $\{ P_n(x) \}_{n\geq 0}.$
In this paper, we give a closed-form expression of the derivative connecting problems for well-known systems of polynomials.
Physical activity of the university's senior students
Authors: Kolokoltsev Mikhail M. , Jagiello Wladyslaw 
Published: February 2020

Background and Study Aim. To prevent hypodynamics, to evaluate the volume and level of weekly physical activity of the university's senior students.
Material and methods. The study involved students (n = 244) aged 19-20 years (n = 157 - boys, n = 87 - girls). The students studied in the 4th year of the Technical University (Russia). The following parameters were investigated: physical activity (PA), the intensity of metabolic processes and motor skills. The volume of weekly physical activity was determined by a short form of the IPAQ-SF physical activity questionnaire. The level of physical activity intensity was determined by the formula of a metabolic equivalent of task (MET) (min/week). According to MET, students are divided into three groups: 1st group with a high level; 2nd group with average level; 3rd group with low level. The battery of motor tests used to evaluate students' physical preparedness.
Results. The total intensive and non-intensive weekly motor activity of boys was 6.2 hours (372 min). This confirms with the standard volume (6 hours) recommended by WHO. The total motor activity of the girls (intense and non-intense) was 4.5 hours (271.6 min) per week. More than a quarter of the surveyed boys had a high level of physical activity. About 62% of students had an average level and 12.7% had a low level. Among all surveyed girls 16.1% have a high level of physical activity, 41.4% had an average level and 42.5% had a low level. The results of boys with a low level of physical activity in all motor tests were lower than the results of boys with high and average levels of physical activity. The exception was the results of the Seated Forward Bend test (p <0.05). In 6 motor tests, the results of girls with a low level of physical activity were worse than the results of female students with a high level of weekly physical activity (p <0.05). There are no significant differences between the test results in girls with low and average levels of weekly physical activity.
Conclusions. After completing the course on the subject "Elective Courses in Physical Culture and Sports", the physical activity of students remains high enough. 12.7% of boys and 42.5% of girls with low levels of physical activity and MET were identified among the surveyed student population. This allows aligning them into a group at risk of developing non-communicable diseases. To reduce the hypodynamics of junior courses students at risk, it should use individually directed pedagogical technologies of physical education. In presenting the theoretical section of the subject "Physical Culture" to the senior courses students it is necessary to strengthen their motivation for independent motor activity.
Atualidade da teologia da cultura de Paul Tillich
Authors: Higuet Etienne Alfred 
Published: February 2020

A teologia de Tillich elaborou-se como um constante diálogo e confronto com os movimentos sociais, políticos, filosóficos, científicos e artísticos do século XX, no afinco de descobrir sua dimensão religiosa suprema, suas chances e seus desvios, suas exigências e seus apelos. Foi nessa intenção que Tillich construiu o “método de correlação” que o tornou famoso. É nesse sentido que toda a teologia dele pode ser qualificada de “teologia da cultura”. O breve trabalho que aqui propomos explicitará numa primeira parte os principais conceitos que estruturam a teologia da cultura de Tillich : preocupação suprema, última ou incondicional; duplo conceito de religião; profanização e demonização; cultura e estilo; kairos e teonomia; princípio protestante. Apresentamos na segunda parte três aplicações, para ilustrar o projeto tillichiano de teologia da cultura: análise da cultura da sociedade industrial; análise religiosa do capitalismo e do socialismo; natureza, símbolo e sacramento.
O símbolo Império em Paul Tillich e a ameaça autodestrutiva da sociedade angolana no romance “O cão e os caluandas” de Pepetela
Authors: Silva Natanael Gabriel da 
Published: February 2020

O presente artigo procura problematizar a leitura que Pepetela faz sobre a sociedade angolana em “O cão e os caluandas”, a partir da Teologia da Cultura e as ambiguidades da vida, tendo como referencial o símbolo Império desenvolvido por Paul Tillich. O registro do símbolo Império no referido romance de Pepetela é um caminhar pelo cotidiano de Luanda, sob o regime de um Estado controlado por um partido único. Tal situação resulta, com enrijecimento institucional por meio da burocracia monolítica em corrupção, fragmentação, desumanização e ameaça à integração, manifestado na manipulação e distorção do socialismo, identificado como “esquemático” por Pepetela. Sob a voz profética, o romancista narra a vida, as suas contradições, falta de sentido, descaminhos e sonhos recrudescidos por uma tentativa de antecipação política da vida idealizada, ou vida sem ambiguidade, antecipada e demônica, como aponta Tillich.