bluuebunny/crossref_metadata_2025 huggingface dataset:
The Metaphysics of Stoic Corporealism
Authors: de Harven Vanessa
Published: February 2021

The Stoics are famously committed to the thesis that only bodies are, and for this reason they are rightly called “corporealists.” They are also famously compared to Plato’s earthborn Giants in theSophist, and rightly so given their steadfast commitment to body as being. But the Stoics also notoriously turn the tables on Plato and coopt his “dunamisproposal” thatbeingis whatever can act or be acted upon, to underwrite their commitment to body rather than shrink from it as the Giants do. The substance of Stoic corporealism, however, has not been fully appreciated. This paper argues that Stoic corporealism goes beyond thedunamisproposal, which is simply an ontological criterion forbeing, to the metaphysics of body. This involves, first, an account of body as metaphysically simple and hence fundamental; second, an account of body as malleable and continuous, hence fit for blending (krasis di’ holou) and composition. In addition, the metaphysics of body involves a distinction between this composition relation seen in the cosmology, and the constitution relation by which the four-fold schema called the Stoic Categories proceeds, e.g. the relation between a statue and its clay, or a fist and its underlying hand. It has not been appreciated that the cosmology and the Categories are distinct — and complementary — explanatory enterprises, the one accounting for generation and unity, the other taking those individuals once generated, and giving a mereological analysis of their identity and persistence conditions, kinds, and qualities. The result is an elegant division of Plato’s labor from the Battle of Gods and Giants. On the one hand, the Stoics rehabilitate the crude cosmology of the Presocratics to deliver generation and unity in completely corporeal terms, and that work is found in their Physics. On the other hand, they reform the Giants and “dare to corporealize,” delivering all manner of predication (from identity to the virtues), and that work is found in Stoic Logic. Recognizing the distinctness of these explanatory enterprises helps dissolve scholarly puzzles, and harmonizes the Stoics with themselves.
Effects of different extraction methods on antioxidant properties of blueberry anthocyanins
Authors: Li Xiang , Zhu Feiying , Zeng Zhiwen
Published: February 2021

Currently, the extraction technology of blueberry anthocyanin includes solvent extraction, enzyme extraction, and ultrasonic extraction. Different methods may damage the internal structure of anthocyanin in the extraction process, and hence the extracted anthocyanin cannot have the maximum nutritional and medicinal value. Therefore, this article analyzes the effects of different extraction methods on the antioxidant properties of blueberry anthocyanin and uses solvent extraction, enzymatic hydrolysis, and ultrasonic extraction methods to extract blueberry anthocyanin. The antioxidative properties of anthocyanins from blueberry by different extraction methods were compared and analyzed. The solvent extraction method, the enzymatic hydrolysis method, and the ultrasonic extraction method were used as experimental comparative extraction methods. The antioxidant properties of blueberry anthocyanins were measured from various angles such as resistance to oil oxidation, reducing power, and ability to scavenge hydroxyl radicals (˙OH) performance. From the perspective of antioxidation of fats and oils, the average inhibition rate of the solvent extraction method can reach 90%, and the corresponding inhibition rate of the anthocyanins obtained by the other two extraction methods is about 80%. The measurement results are also consistent with the measurement results of oxidation resistance of oils and fats. Conclusion: Among three different extraction methods of blueberry anthocyanins, the solvent extraction method can preserve the antioxidant properties of blueberry anthocyanins to the greatest extent.
A comparative study of thermodynamic models to describe the VLE of the ternary electrolytic mixture H2O–NH3–CO2
Authors: Rosa Licianne P. S. , Cruz Natan , Costa Glória M. N. , Pontes Karen V.
Published: February 2021

This study aims to ascertain the influence of the activity coefficient model and equation of state for predicting the vapor–liquid equilibrium (VLE) of the multi-electrolytic system H2O–NH3–CO2. The non-idealities of the liquid phase are described by the eUNIQUAC and eNRTL models. The vapor phase is modeled with the Nakamura equation, which is compared with the ideal gas assumption. The models are validated with experimental data from literature on total pressure and ammonia partial pressure. Results show that the models UNIQUAC and NRTL without dissociation can only reproduce the experimental conditions in the absence of CO2. When the electrolytic term is considered, the eUNIQUAC model is able to reproduce the experimental data with greater accuracy than the eNRTL. The equation of state which describes the vapor phase plays no major role in the accuracy of the VLE prediction in the operational conditions evaluated here. Indeed, the accuracy relies on the activity coefficient, therefore the ideal gas equation can be considered if the non-idealities of the liquid phase are described by a well-tuned model. These findings could be useful for equipment design, flowsheet simulations and large-scale simultaneous optimization problems.
Nonlinear dynamics of a RLC series circuit modeled by a generalized Van der Pol oscillator
Authors: Kpomahou Yélomè Judicaël Fernando , Miwadinou Clément Hodévèwan , Agbokpanzo Richard Gilles , Hinvi Laurent Amoussou
Published: February 2021

In this paper, nonlinear dynamics study of a RLC series circuit modeled by a generalized Van der Pol oscillator is investigated. After establishing a new general class of nonlinear ordinary differential equation, a forced Van der Pol oscillator subjected to an inertial nonlinearity is derived. According to the external excitation strength, harmonic, subharmonic and superharmonic oscillatory states are obtained using the multiple time scales method. Bifurcation diagrams displayed by the model for each system parameter are performed numerically through the fourth-order Runge–Kutta algorithm.
The Foundations of Civil Liability for Industrial Pollution
Authors: Messner David
Published: February 2021

In European private law, operators of industrial facilities, power plants and other sites using special substances or procedures are made responsible for harm caused by pollution even where it is doubtful that such harmdoing is unreasonable or could have been foreseen. Analysing both fault-based and strict liability, the author discusses legal bases for this liability and its justification in European jurisdictions.
Euler classes of vector bundles over manifolds
Authors: Naolekar Aniruddha C.
Published: February 2021

Let 𝓔
k
denote the set of diffeomorphism classes of closed connected smooth k-manifolds X with the property that for any oriented vector bundle α over X, the Euler class e(α) = 0. We show that if X ∈ 𝓔2n+1 is orientable, then X is a rational homology sphere and π
1(X) is perfect. We also show that 𝓔8 = ∅ and derive additional cohomlogical restrictions on orientable manifolds in 𝓔
k
.
Dynamical behaviors of a prey-predator model with foraging arena scheme in polluted environments
Authors: He Xin , Zhao Xin , Feng Tao , Qiu Zhipeng
Published: February 2021

In this paper, a stochastic prey-predator model is investigated and analyzed, which possesses foraging arena scheme in polluted environments. Sufficient conditions are established for the extinction and persistence in the mean. These conditions provide a threshold that determines the persistence in the mean and extinction of species. Furthermore, it is also shown that the stochastic system has a periodic solution under appropriate conditions. Finally, several numerical examples are carried on to demonstrate the analytical results.
Stimmrechtsberater in der modernen Corporate Governance
Authors: Hell Patrick
Published: February 2021

Im Zuge der zweiten Aktionärsrechterichtlinie wurden erstmals spezifische Pflichten für Stimmrechtsberater eingeführt. Dieser Beitrag zeigt, dass das Bild der Stimmrechtsberater als besonders mächtige und einflussreiche Akteure die Diskussion um ihre Regulierung in die Irre führt. Die ökonomischen Rahmenbedingungen, das Geschäftsmodell und damit einhergehende Problemlagen sowie jüngste empirische Studien werden dargestellt; ferner wird die Haftungssituation für Stimmrechtsberater untersucht. Auf dieser Grundlage aufbauend wird die aktuelle und potentielle Regulierung der Stimmrechtsberater kritisiert und der Schluss gezogen, dass es sich um eine Stellvertreterdebatte handelt, während die eigentliche Herausforderung für die Zukunft der Corporate Governance börsennotierter Unternehmen im Wachstum der institutionellen – insbesondere der passiven – Investoren liegt.
CUL2LRR1, TRAIP and p97 control CMG helicase disassembly in the mammalian cell cycle
Authors: Villa Fabrizio , Fujisawa Ryo , Ainsworth Johanna , Nishimura Kohei , Lie‐A‐Ling Michael , Lacaud Georges , Labib Karim PM
Published: February 2021

The eukaryotic replisome is disassembled in each cell cycle, dependent upon ubiquitylation of the CMG helicase. Studies ofSaccharomyces cerevisiae,Caenorhabditis elegansandXenopus laevishave revealed surprising evolutionary diversity in the ubiquitin ligases that control CMG ubiquitylation, but regulated disassembly of the mammalian replisome has yet to be explored. Here, we describe a model system for studying the ubiquitylation and chromatin extraction of the mammalian CMG replisome, based on mouse embryonic stem cells. We show that the ubiquitin ligase CUL2LRR1is required for ubiquitylation of the CMG‐MCM7 subunit during S‐phase, leading to disassembly by the p97 ATPase. Moreover, a second pathway of CMG disassembly is activated during mitosis, dependent upon the TRAIP ubiquitin ligase that is mutated in primordial dwarfism and mis‐regulated in various cancers. These findings indicate that replisome disassembly in diverse metazoa is regulated by a conserved pair of ubiquitin ligases, distinct from those present in other eukaryotes.
Arginine-vasopressin infusion in a child with cranial diabetes insipidus during hyperhydration therapy with chemotherapy: a therapeutic challenge
Authors: Devaraja Janani , Sloan Sarah , Lee Vicki , Dimitri Paul
Published: February 2021

An 11-year-old girl presented with acute lower limb weakness, dehydration, hypernatraemia and secondary rhabdomyolysis on a background of an 8-month history of polyuria. Radiological investigations revealed a suprasellar tumour which was diagnosed on biopsy as a non-metastatic germinoma. Further endocrinological investigations confirmed panhypopituitarism and she commenced desmopressin, hydrocortisone and thyroxine. Her chemotherapeutic regime consisted of etoposide, carboplatin and ifosfamide, the latter of which required 4 litres of hyperhydration therapy daily. During the first course of ifosfamide, titration of oral desmopressin was trialled but this resulted in erratic sodium control leading to disorientation. Based on limited literature, we then trialled an arginine-vasopressin (AVP) infusion. A sliding scale was developed to adjust the AVP dose, with an aim to achieve a urine output of 3–4 mL/kg/h. During the second course of ifosamide, AVP infusion was commenced at the outset and tighter control of urine output and sodium levels was achieved. In conclusion, we found that an AVP infusion during hyperhydration therapy was required to achieve eunatraemia in a patient with cranial diabetes insipidus. Developing an AVP sliding scale requires individual variation; further reports/case series are required to underpin practice.

Learning points:

Certain chemotherapeutic regimens require large fluid volumes of hyperhydration therapy which can result in significant complications secondary to rapid serum sodium shifts in patients with diabetes insipidus.

The use of a continuous AVP infusion and titrating with a sliding scale is more effective than oral desmopressin in regulating plasma sodium and fluid balance during hyperhydration therapy.

No adverse effects were found in our patient using a continuous AVP infusion.

Adjustment of the AVP infusion rate depends on urine output, fluid balance, plasma sodium levels and sensitivity/response of the child to titrated AVP doses.
Sperm selection by rheotaxis improves sperm quality and early embryo development
Authors: Romero-Aguirregomezcorta Jon , Laguna-Barraza Ricardo , Fernández-González Raúl , Štiavnická Miriama , Ward Fabian , Cloherty Jennifer , McAuliffe Denis , Larsen Peter B , Grabrucker Andreas M , Gutiérrez-Adán Alfonso , Newport David , Fair Seán
Published: February 2021

The objective of this work was to elucidate whether a sperm selection method that combines rheotaxis and microfluidics can improve the selection of spermatozoa over density gradient and swim-up. For this purpose human sperm selected by rheotaxis were compared against density gradient, swim-up and a control group of non-selected spermatozoa in split frozen-thawed (FT) and fresh (F) semen samples. Sperm quality was assessed in terms of motility, morphology, DNA fragmentation index (DFI), viability, acrosome integrity and membrane fluidity. Using a mouse model, we compared fertilisation and embryo development rates after performing ICSI with spermatozoa, sorted using rheotaxis or swim-up. Selection by rheotaxis yielded a sperm population with reduced DFI than the control (P < 0.05), improved normal morphology (P < 0.001) and higher total motility (TM; P < 0.001) than the other techniques studied in F and FT samples. Swim-up increased TM compared to density gradient and control in FT or F samples (P < 0.001), and yielded lower DFI than the control with F samples (P < 0.05). In FT samples, selection by rheotaxis yielded sperm with higher viability than control, density gradient and swim-up (P < 0.01) while acrosomal integrity and membrane fluidity were maintained. When mouse spermatozoa were selected for ICSI using rheotaxis compared to swim-up, there was an increase in fertilisation (P < 0.01), implantation (P < 0.001) and foetal development rates (P < 0.05). These results suggest that, in the absence of non-destructive DNA testing, the positive rheotaxis can be used to select a population of low DNA fragmentation spermatozoa with high motility, morphology and viability, leading to improved embryo developmental rates.
IFR, IFD und WpIG – Neuer Rechtsrahmen für Wertpapierfirmen (Teil 1)
Authors: Schuster Gunnar , Nemeczek Heinrich
Published: February 2021

Wertpapierfirmen müssen sich auf ein neues, komplexes Aufsichtsregime einrichten, das am 26. 6. 2021 in Kraft tritt. Es soll den besonderen Risiken, die von Wertpapierfirmen für die Finanzstabilität ausgehen, besser Rechnung tragen als das bisher für sie maßgebliche Aufsichtsregime für Kreditinstitute. Lediglich die größten Wertpapierfirmen sollen weiterhin als CRR-Kreditinstitute beaufsichtigt werden.

Der Beitrag behandelt in vorliegendem ersten Teil die ausdifferenzierte Kategorisierung der Wertpapierfirmen. In einem zweiten Teil des Beitrags, der in der kommenden Ausgabe der ZBB erscheint, werden die Kapital- und Liquiditätsanforderungen, die Aufsichtsanforderungen an Konzentrationsrisiken, die Änderungen zur aufsichtlichen Konsolidierung sowie die Vorgaben zur internen Unternehmensführung und zur Vergütung behandelt.
Peran Etika Qur’ani Terhadap Sistem Ekonomi Islam.
Authors: Iswandi Andi
Published: February 2021

Role of Ethics Qur’anic toward Islamic Economic Sistem. In the discourse of conventional economics, ethics in economic activity does not have an important role in his studies even denied. This view is based sphere of ethics that is different from the economic sphere. Ethics is more inclined to religious values are just talking about good-bad and the world hereafter. While the economy discussing with the sistem and the material welfare. In contrast to conventional economics, Islamic economics is the view that ethics plays a role in the economic activity, even ethics and economics can’t be separated. In Islamic economics, ethics or morals qur’ani contained in the Quran has an important role on the formation of an Islamic economic sistem  DOI:10.15408/aiq.v6i1.1528
Cover Vol. 7 (2), July 2015
Authors: Al-Iqtishad Jurnal
Published: February 2021

Cover Vol. 7 (2), July 2015
Current Evidence and Future Directions of PCSK9 Inhibition
Authors: Xu Jiaqian , Shapiro Michael D
Published: February 2021

Recent scientific and therapeutic advances in proprotein convertase subtilisin kexin type 9 (PCSK9) inhibition have opened a chapter in the management of hypercholesterolemia, especially in patients who are inadequately controlled on or intolerant to statins. The two PCSK9 monoclonal antibodies, evolocumab and alirocumab, reduce LDL cholesterol by 60% and improve cardiovascular outcomes when taken in addition to statin therapy. More recently, inclisiran, a silencing RNA (siRNA) that inhibits translation of PCSK9 mRNA, demonstrated LDL cholesterol reduction by 45–50% with the advantage of dramatically reduced dose frequency. Other modes of PCSK9 inhibition include small molecule antagonists, vaccines, CRISPR gene editing, and antagonism at various steps of translation, and post-translational processing.
Chemical restraint of coatis by the association of Detomidine, Tiletamine and Zolazepam, in allometrically scaled dosages
Authors: Kunz R.O. , Cardeal C. , Riekher Junior L.E. , Valle L.G.E. , Belettini S.T. , Piau Junior R. , Quessada A.M. , Pachaly J.R.
Published: February 2021

ABSTRACT Ten free-living adult coatis (two males and eight females) were chemically restrained with "ZAD-50", a concentrated formulation prepared with the dehydrated content of a Zoletil/50® vial diluted with 0.25mL of 1% atropine, 0.265mL of Dormiun-V®, and 2.2mL of distilled water, being exactly 3.0mL. The formula was administered to each animal previously captured and physically contained with a net. The loss of righting reflex (RR) occurred at 2.3±0.8 minutes post-injection (MPI), with anesthesia beginning at 4.4±2.7 MPI. Myorelaxant and analgesia were considered excellent at all moments of the evaluation. Conscious reactions were observed at 78.7±22.2 MPI, the return of the RR occurred at 101 ± 18 MPI, and normal ambulation was acquired at 137.0±31.0 MPI. The mean values of physiological parameters measured every 10 minutes between 10 and 50 MPI were 152.2 heartbeats per minute for heart rate, 66.4 respiratory movements per minute for respiratory rate, 39.2oC for rectal temperature, 86.2% for SpO2 and 14.6 mmHg for systolic blood pressure. In the same times, the EEG registered sinus rhythm. No adverse reactions were observed, and the assessed vital parameters remained compatible with the state of chemical restraint.
Estimation of genetic parameters for test-day milk yield in Girolando cows using a random regression model
Authors: Santos E.P.B. , Feltes G.L. , Negri R. , Cobuci J.A. , Silva M.V.G.B.
Published: February 2021

ABSTRACT The objective of this study was to estimate the components of variance and genetic parameters of test-day milk yield in first lactation Girolando cows, using a random regression model. A total of 126,892 test-day milk yield (TDMY) records of 15,351 first-parity Holstein, Gyr, and Girolando breed cows were used, obtained from the Associação Brasileira dos Criadores de Girolando. To estimate the components of (co) variance, the additive genetic functions and permanent environmental covariance were estimated by random regression in three functions: Wilmink, Legendre Polynomials (third order) and Linear spline Polynomials (three knots). The Legendre polynomial function showed better fit quality. The genetic and permanent environment variances for TDMY ranged from 2.67 to 5.14 and from 9.31 to 12.04, respectively. Heritability estimates gradually increased from the beginning (0.13) to mid-lactation (0.19). The genetic correlations between the days of the control ranged from 0.37 to 1.00. The correlations of permanent environment followed the same trend as genetic correlations. The use of Legendre polynomials via random regression model can be considered as a good tool for estimating genetic parameters for test-day milk yield records.
Garlic oil as a fight against histological and oxidative stress abnormalities in Wistar rats after oral inoculation of Anisakis spp. Type II (L3) (Nematoda)
Authors: Morsy K. , Sheraba N. , Alhamhoom Y. , Dajem S.B. , Al-Kahtani M. , Shati A. , Alfaifi M. , Elbehairi S.E. , El-Mekkawy H. , El-Kott A. , Ezzat A. , Meferij M.B. , Saber S.
Published: February 2021

ABSTRACT The consumption of inadequately thermally treated fish is a public health risk due to the possible propagation of Anisakis larvae and their antigenic proteins, the causative agent of the zoonotic disease anisakidosis. The present study demonstrated the physiological and histopathological changes that accompanied an oral inoculation of crude extracts from fresh and thermally treated Anisakis Type II (L3) in Wistar albino rats. Nematode worms were isolated from the marine fish Dicentrarchus labrax. They were examined and taxonomically identified using light and scanning electron microscopy. The study was performed in 6 rat groups: a control group (I), a garlic oil (GO) inoculated group (II), a fresh L3 inoculated group (III), a thermally treated L3 inoculated group (IV), a fresh L3 + GO inoculated group (V), and a thermally treated L3 + GO inoculated group (VI). It was observed that rats inoculated with fresh and thermally treated L3 crude extracts showed abnormal oxidative stress markers associated with the destruction of normal architecture of spleen and thymus. GO produced a protective effect in rat groups inoculated with L3 extracts + GO administration via the amelioration of oxidative stress markers, which was confirmed by the marked normal structure of the organs’ histology. Cooking of L3 infected fish induced severe physiological and histopathological alterations compared to uncooked infected fish. The administration of garlic before and after fish eating is recommended to avoid the dangerous effect of anisakids, even if they are cooked.
Movimento Vertical de Minifoguetes: Equações de Trajetórias e Análises Gráficas
Authors: Alves André Luíz , Bento Sérgio Souza , Marchi Carlos Henrique
Published: February 2021

Neste trabalho são descritas as equações diferenciais de movimento e as respectivas soluções para a velocidade [v(t)] e altitude [y(t)] em função do tempo, relativas a um foguete que segue uma trajetória vertical em um movimento de subida. São considerados quatro modelos: no primeiro é desprezada a força de arrasto do ar; no segundo é considerada uma força de arrasto linear com a velocidade; no terceiro e quarto modelos é considerado que a força de arrasto é proporcional ao quadrado da velocidade. O terceiro modelo se distingue por considerar a massa total de um foguete constante. No quarto modelo, apresenta-se uma solução completa, considerando-se que a massa decresce linearmente com o tempo durante a exaustão de gases. Para testar estes modelos foi utilizado o voo experimental do minifoguete Epsilon-8 do Grupo de Foguetes Carl Sagan da UFPR. Foram utilizados parâmetros experimentais relacionados à curva de empuxo em função do tempo (teste estático) do Epsilon-8 que permitiram estimar a velocidade de exaustão dos gases expelidos do motor. As curvas teóricas para v(t) e y(t) do terceiro e quarto modelos, por serem mais completos, foram utilizados no ajuste das respectivas curvas experimentais do Epsilon-8. O terceiro modelo, embora tenha uma solução aproximada, é razoável na previsão do apogeu, com um erro de 8,6%. O quarto modelo, por ser o mais completo, prevê o apogeu com um erro de apenas 1,5%.
Abordagem do suicídio na educação médica: analisando o tema na perspectiva dos acadêmicos de medicina
Authors: Soeiro Ana Cristina Vidigal , Limonge Lívia Gomes , Lopes Nicole Salomão , Fayal Syenne Pimentel
Published: February 2021

Resumo: Introdução: O Brasil figura entre os países com maior número de suicídios no mundo, contudo o estigma relacionado ao tema ainda persiste, realidade que se reflete em sua escassa problematização na educação e prática médicas. Objetivo: O estudo foi realizado com o objetivo de conhecer as percepções e atitudes de acadêmicos acerca de temas relacionados ao suicídio, de modo a identificar a inserção da temática ao longo da graduação. Método: Trata-se de uma pesquisa de natureza descritiva, exploratória e transversal, com uso de metodologia quantitativa. O estudo teve início após aprovação por Comitê de Ética em Pesquisa e contou com participação de uma casuística de 188 alunos matriculados no curso de Medicina de uma universidade pública do Pará. Os dados foram coletados de forma presencial, por meio da utilização de um questionário semiestruturado, após assinatura do Termo de Consentimento Livre e Esclarecido (TCLE). Resultados: A maioria dos participantes atribuía importância ao tema, mas observou-se que ainda há pouca inserção de conteúdos relacionados à temática ao longo da educação médica, haja vista o fato de a grande maioria dos participantes não conhecer nenhum manual ou protocolo de intervenção nessa área. Além disso, mais da metade dos acadêmicos relataram dificuldades em relação à realização da notificação compulsória. Conclusões: Apesar da inclusão de temas relacionados à saúde mental ao longo da formação acadêmica, a problematização do suicídio ainda precisa ser intensificada nos conteúdos curriculares da educação médica. Trata-se de uma medida importante para o alcance de intervenções mais eficazes e qualificadas, particularmente pela relevância que o assunto vem adquirindo nos tempos atuais.
Santo de Casa ou Sangue Novo? Caso de Sucessão da Tink
Authors: Meneghini Eleandra Maria Prigol , Passos Ana Paula Pereira dos , Marinho Sidnei Vieira , Alberton Anete
Published: February 2021

RESUMO Este caso para ensino tem por objetivo promover uma reflexão sobre o processo de sucessão da Tink, uma indústria de tintas familiar, composta por sete núcleos familiares, localizada no município de Panambi, estado do Rio Grande do Sul. Em 2018, a empresa estava no mercado há duas décadas, e Pedro, o diretor-presidente desde 2009, informou aos sócios que deixaria a gestão em um período de dois anos. Os sócios gestores defendiam a sucessão interna e apostavam principalmente na manutenção da cultura da empresa. Já a parte dos sócios que não atuava na empresa defendia a sucessão externa, pois não identificava, na atual equipe, o perfil apto a ocupar a cadeira de Pedro. Assim, era necessário discutir sobre as possibilidades de sucessão, considerando o posicionamento divergente dos sócios. Para este caso, propõe-se que os alunos se coloquem no lugar de Pedro, a fim de propiciar-lhes um debate acerca das vantagens e desvantagens da sucessão interna e da sucessão externa para a Tink. Propõe-se que o caso seja utilizado em cursos de graduação e pós-graduação lato sensu na área de Gestão, em disciplinas de Estratégias Organizacionais e Gestão de Pessoas que enfoquem a sucessão em empresas familiares, as competências gerenciais e a manutenção da cultura.
In Search of Sabrosura and Sabor: possible connections between anthropological methods and performance
Authors: Cabanzo Pilar
Published: February 2021

ABSTRACT The goal of this article is to make connections between anthropological methods and performance based on data collected in research about salsa dancing in the city of Rio de Janeiro. The text describes changes in the approach to salsa and focuses on two different dance styles practiced in two ballroom dance schools. The literature on salsa tends to favor its sound structure, leaving aside other sensory stimuli. In contrast, this article presents an ethnographic approach to salsa dancing based on notions of performance. Thus, the purpose is to contribute to dance research from an anthropological perspective.
Bee pollen improves productivity of laying Japanese quails
Authors: OLIVEIRA Maria Cristina de , SOUZA Rodolfo Gomes de , DIAS Daisa Mirelle Borges , GONÇALVES Bruno Nunes
Published: February 2021

SUMMARY This study aimed to evaluate the effects of bee pollen (BP) on the performance of laying Japanese quails and egg quality. A total of 60 quails were used in a completely randomized experimental design with four treatments (0%, 0.5%, 1%, and 1.5% BP inclusion in diets) and five replicates. At the end of the study, productive performance and egg quality were evaluated; 160 eggs were maintained at different temperatures based on a completely randomized design and factorial arrangement (4 × 2), with four BP levels (cited above) and two storage temperatures (room temperature and refrigeration) for 14 days, totaling eight treatments with four replicates. BP levels did not influence (P> 0.05) feed conversion; however, daily feed intake, laying rate, egg mass, and weight and percentage of albumen increased. Yolk percentage decreased due to the augmentation of BP in diets. There was no effect (P> 0.05) of interaction of storage temperature × BP levels on egg quality, except with regard to the Haugh unit. BP supplementation resulted in higher egg weight and index of yolk and albumen. Refrigerated eggs had better internal quality than normal eggs. BP inclusion in diets of Japanese quails improved bird performance and the quality of fresh and stored eggs.
Mango pulp meal in diets for Nile tilapia (Oreochromis niloticus): Digestibility, Growth performance, Biochemical analysis, Digestive enzyme activity, hematological variables
Authors: Souza Seldon Almeida de , Souza Anderson Miranda de , Souza Renilde Cordeiro de , Melo José Fernando Bibiano , Vidal Luiz Vitor Oliveira
Published: February 2021

ABSTRACT The objective of this study was to evaluate the potential of mango pulp meal (MPM) as an ingredient for extruded diets for Nile tilapia juveniles. In the first trial, the digestibility of energy, dry matter, crude protein, and amino acids was determined, using 80 juveniles (average weight 25.00 ± 0.50 g), fed with a reference diet and a test diet containing the proportion of 70% of the reference diet and 30% of the MPM. Chromium oxide (Cr2O6) was used as an digestibility indicator and feces were collected using the Adapted Guelph System. The second assay assessed the growth performance; biochemical analysis; digestive enzyme activity; hematological variables for 300 juveniles fish (average weight 26.66 ± 0.17 g), fed for 45 days with balanced diets containing 0 (control), 40, 80, 120, and 160 g of MPM per kg-1. The dry matter, crude protein, and crude energy apparent digestibility coefficients of MPM were 39.26, 50.18, and 44.5%, respectively. The growth performance of the animals was negatively impacted by the MPM, however the hematological parameters and plasma concentrations of albumin, total proteins and cholesterol were not altered. However, the increase on hepatic glycogen reserves, glycemia, and alanine aminotransferase plasmatic enzyme activity demonstrated that MPM diet inclusion promoted oxidative metabolism conditions that could cause hepatocellular damage and affect fish health, if fed for long periods or at higher levels of MPM than analyzed in this study.
DETECCIÓN DE SARS-CoV-2 EN CONTACTOS ESTRECHOS ASINTOMÁTICOS DE CASOS CONFIRMADOS POR DIAGNÓSTICO MOLECULAR, PROVINCIA DE BUENOS AIRES, ARGENTINA
Authors: Fischerman Laura , Ercole Regina , Mozgovoj Marina , Dus Santos María José , Garnham Mercedes Didier , Lenicov Federico Remes , Benvenutti María Luz , Santana Lorena , Dominguez Laura , Gauna Santiago , Ameri Lucía , Varela Teresa , Kreplak Nicol´ás , García Enio , Pifano Marina
Published: February 2021

La detección de SARS-CoV-2 y su implicancia en el diagnóstico de COVID-19 han sido muy debatidos en la pandemia. El acceso al diagnóstico molecular y su población destinataria fue parte esencial de las políticas públicas. El objetivo de este estudio fue evaluar el costo/beneficio de la detección de SARS-CoV-2 en contactos estrechos asintomáticos mediante el uso de distintas pruebas de diagnóstico molecular. Se estudiaron 51 contactos estrechos de personas con diagnóstico de SARS-CoV-2 confirmado por RTqPCR, clasificadas por Ct (<20, entre 20 y 30 y >30) en hospitales públicos de la Provincia de Buenos Aires. Del total de contactos estudiados el 15,7% resultó confirmado para SARS-CoV-2, no hubo contactos de casos con Ct>30 positivos. La cantidad de contactos positivos de casos con Ct<20 fue significativamente mayor que la de casos con Cts>20. Las muestras con Cts<20 se asociaron a una carga viral estimada de entre 1 a 4 órdenes de magnitud de diferencia con los rangos de Ct >20. Un 13,7% de contactos estrechos positivos fueron de casos con Ct<20. Al estudiar muestras positivas con diagnóstico confirmado por PCR, correspondientes a la SE1 del 2021, sólo un 19,35% correspondían a muestras con Cts<20 y un 50,7% con Cts entre 20 y 30. A partir de estos datos se muestra que con el testeo de contactos estrechos podríamos detectar sólo un 3,7% de casos. El esfuerzo por parte del sistema de salud pública para esta estrategia, con bajo poder predictivo, puede tener un efecto negativo para el cumplimiento del aislamiento de los contactos y podría generar una demora en los resultados de los casos sospechosos, sin aportar significativamente a controlar la pandemia.
Educación ambiental en el lugar de interés y con la participación de las personas
Authors: Batres Quevedo Jorge Alejandro
Published: February 2021

Desde sus orígenes, la educación ambiental ha atravesado tres etapas: en la década de los años setenta se definen sus dimensiones, propósitos e intenciones más importantes; en los años ochenta se integra el concepto de sostenibilidad y en los años noventa queda supeditada a los fines del desarrollo sostenible. En los años sucesivos, no se identifica una nueva tendencia, pero se hacen visibles sus problemas más importantes: institucionalización, escolarización y activismo ambiental. Con el objetivo de contribuir a la solución de estos y otros problemas detectados, el artículo recoge una experiencia de aproximación participativa, originada en el trabajo comunitario y la práctica docente, denominada educación ambiental situada (EAs), que busca cumplir con tres fines: propiciar el uso de metodologías participativas para resolver, en parte, la escolarización e institucionalización; concebir a la educación ambiental como un proceso educativo integral, situado y significativo, que trasciende el activismo ambiental; promover una ética ambiental de responsabilidad en la relación ser humano-naturaleza. El resultado más importante del marco conceptual de la educación situada es la validación de una metodología para educar ambientalmente en lugares específicos y con la participación de las personas involucradas.
The clash between the employee's right to privacy and freedom of expression and social media misconduct: What justifies employee's dismissal to be a fair dismissal?
Authors: Phungula Simphiwe P
Published: February 2021

The 21st century has an increase in the use of the internet as a means of trading. The use of the internet has also influenced the use of social media as a means of communication. This communication extends to the employer–employee relationship in the workplace. However – in South Africa – due to the rapid use of social media both in and out of the workplace, it has become blurry of what constitutes social media misconduct for which an employee may be disciplined. This is exacerbated by the lack of specific legislation dealing with employees and social media misconduct in South Africa. This article deals with the blessings and the curse of using social media as a means of communication in the workplace. It reveals the difficulties faced by both employers and employees when determining to what extent the behaviour of an employee can constitute adequate grounds for dismissal in relation to that employee’s social media misconduct. Recommendations are made on the way forward.
Discrimination on the grounds of pregnancy, denial of maternity leave and lack of conducive environment for nursing mother in the workplace in South Africa
Authors: Matotoka Motlhatlego D
Published: February 2021

In South Africa, women continue to be discriminated against on the grounds of being pregnant in the workplace and sometimes they are denied maternity leave, breastfeeding and childcare facilities. Methodologically, using a descriptive and content analysis research approach, this article examines how the apartheid era restricted the rights of pregnant women in the workplace, particularly black African women. Post-1994 South Africa, the article utilised various protective transformative legal and policy interventions that have been introduced and are being implemented to address the problem of discrimination against women on the grounds of pregnancy in the workplace.
The devil in the deemed: Novel takes on Sections 198B and D
Authors: Govindjee Avinash , Grogan John
Published: February 2021

Section 198 of the Labour Relations Act is designed to protect vulnerable employees of labour brokers and those on fixed-term contracts. Some recent judgments may make obtaining that protection more complicated.
Substantiation of the Erdenetiyn-Ovoo copper-molybdenum ore flotation technology with the use of tertiary acetylene alcohol
Authors: Yushina T. I. , Purev B. , Namuungerel B.
Published: February 2021

The article presents the results of a study of the factors affecting the efficiency of the copper-molybdenum ore flotation. The objective of this work was to substantiate and develop a reagent mode for flotation of the Erdenetiyn-Ovoo porphyry copper ores, which makes possible extracting main copper and molybdenum minerals into corresponding concentrates more fully and selectively. It is shown that the use of a DC-80 (2-methyl-3-butin-2-ol) flotation reagent in assosiation with the main base mode reagents — an AERO MX-5152 (a mixture of allyl ethers of xanthogenic acids with n-butyloxycarbonyl-O-n-butylthionocarbamate) combined nonionized collector, a BK-901B (a composition of dialkyldithiophosphate and O,N-dialkyldithiocarbamate) blending ionized collector; diesel fuel; a MIBC (methyl isobutyl carbinol) frother; sodium sulphide Na2S as a modifier and lime СаО as a pH regulator of the medium allows obtaining a noticeable, economically sound additional recovery of both copper and molybdenum. Quantum chemical calculations have permitted to establish an important feature of the mechanism of interaction between the DC-80 molecules that can form stronger complexes based on -bonds with metal cations of sulfide minerals in comparison with allyl ethers of xanthogenic acids. The energy indicators of the formation of bonds between Cu2S, the DC-80 molecules and allyl ether of xanthic acid were calculated. There were shown the models of the assumed interaction of small mineral particles with air bubbles during flotation, which are determined by physical and chemical properties of the molecules of acetylene-containing reagents. The principal difference between the properties of the foam bubbles formed by acetylene-containing molecules for at least 50% and that of the ordinary foam bubbles formed by standard frothers has been demonstrated in the view of the mechanism of their fixing on the surface of small particles of sulfide minerals and the surface of the bubbles. The optimal flotation mode, comprising a DC-80 reagent, BK-901B and AERO MX-5152 base collectors has been developed. The application of this mode will allow increasing the copper and molybdenum recovery into concentrates by 0.62% and 5.76%, respectively, reducing the flotation time by 35–40%, and improving the quality of resulting concentrates. Based on the research results, it is recommended to incorporate the DC-80 acetylene reagent into the basic flotation mode for conducting pilot tests at the Erdenet Mining Corporation enterprises (Mongolia).
The Greek shield as a metal artifact and its reflection in the story of the Croesus’ gifts in Thebes
Authors: Mozhajsky A. Yu. , Pichugina V. K.
Published: February 2021

The article is devoted to the study of archaeological evidences and literary tradition regarding ancient Greek shields as metal artifacts or as the artifacts made by the use of metal. Presented is an attempt at interpreting the names “σάκος” (sakos) and “ἀσπίς” (aspis), by which ancient authors called the Greek shields in the Archaic and Classical Periods. New data on the dating of some artefacts let assume that a number of shields, the production technology of which goes back to the Late Bronze Age or made later (in the Geometric or Archaic Periods) may have been displayed in sanctuaries under the influence of the artifacts from the Late Bronze Age. The authors propose a version according to which Herodotus, describing the Croesus’ gifts in Thebes, uses the word “σάκος”, thereby emphasizing the uncommonness of the golden shield, its heroic antiquity and the reliability of the Amphiaraus’ shield. Archaeological parallels and the words “φαενάν [ἀσπ]ίδα” from an inscription found in Thebes suggest that it was a round shield. Thisartifact had not only a religious, but also a historical and educational function, being an article that bounds up the Thebans with their heroic past. This work is supported by the Russian Science Foundation under grant No. 18-78-10001.
Insights into the Use of Social Comparison in Migrants’ Transnational Social Positioning Strategies
Authors: Stock Inka
Published: February 2021

This article discusses the role of social comparisons in the processes through which migrants make sense of their own social position from a transnational perspective. Migrants are often involved in transnational forms of life which influence their forms of belonging, their economic strategies, their moral values and their political actions. There is also evidence to suggest that migrants use transnational frames of reference to evaluate their social positioning within their origin and host countries. In this article, we offer a methodological approach to the study of social positions in transnational spaces which aims to account for the interplay between the markers of objectively verifiable social positions and their subjective assessment by migrants. Concretely, we focus on social comparison as a mechanism for symbolic boundary drawing processes, which help migrants to make sense of their (often differing) social positions within host and origin countries. Social comparisons help migrants to evaluate how they are seen and positioned by others and subsequently bring these assessments into line with their own social categories and evaluations of their social position in different places. These findings highlight the importance of social comparisons as a tool to investigate the interaction between social and spatial mobility.
Migrants’ Social Positioning Strategies in Transnational Social Spaces
Authors: Stock Inka , Fröhlich Joanna Jadwiga
Published: February 2021

This article examines the nexus of spatial and social mobility by focusing on how migrants in Germany use cultural, economic and moral boundaries to position themselves socially in transnational social spaces. It is based on a mixed-methods approach, drawing on qualitative interviews and panel data from the German Socio-Economic Panel Survey. By focusing on how people from different origins and classes use different sets of symbolic boundaries to give meaning to their social mobility trajectories, we link subjective positioning strategies with structural features of people’s mobility experience. We find that people use a class-specific boundary pattern, which has strong transnational features, because migrants tend to mix symbolic and material markers of status hierarchies relevant to both their origin and destination countries. We identify three different types of boundary patterns, which exemplify different ways in which objective structure and subjectively experienced inequalities influence migrants’ social positioning strategies in transnational spaces. These different types also exemplify how migrants’ habitus influences their social positioning strategies, depending on their mobility and social trajectory in transnational spaces.
Move Abroad to Move Forward? Self-Assessments of Chinese Students and Undocumented Migrants in France
Authors: Lévy Florence , Li Yong
Published: February 2021

Migrants’ self-assessments refer to their perceptions of social mobility and positioning. These assessments are often ambivalent and counterintuitive for observers. To overcome contradictory first impressions, we propose a comprehensive approach to migrants’ self-assessments that goes beyond the opposition between objective and subjective social mobility and links the transnational context, various social spheres, actors’ migratory projects, and their reflexivity. The empirical materials in this article draw on two studies on Chinese migrants in France and confront the trajectories and viewpoints of undocumented migrants and international students. Beyond the differences between their experiences and their legal, economic, and social statuses in France and China, we highlight several common points: First, both groups considered migration a lever to improve their social status. Second, their evaluations link their regions of origin and destination as well as various social spheres. Third, in a transnational context, many factors at different scales influence migrants’ subjective self-assessments of the success or failure of their migration. The migrants’ assessments can vary according to their emphasis on professional, personal, or family trajectories, or on their choice of reference groups. They are shaped by the complexity of translations of status from one country to another and by rapid social transformation in China. Thus, many interviewees estimate that they are simultaneously in situations of social progression and regression.
Introduction: Migration and Unequal Positions in a Transnational Perspective
Authors: Faist Thomas , Fröhlich Joanna J. , Stock Inka
Published: February 2021

How does spatial mobility influence social mobility and vice versa? Often, the ‘objective’ structural positions on the one hand, and the ‘subjective’ definition of social positions on the other hand, are not considered together. Yet this is necessary in order to gauge the consequences of mobility trajectories reaching across borders. This framing editorial asks how we can study the interplay of perceptions of one’s own social position and one’s objective social position to better understand how spatial mobility influences social mobility and vice versa. In short, this means an exploration of the nexus of spatial mobility and social mobility. Exploring that nexus requires attention to objective social positions, subjective social positioning strategies, transnational approaches to the study of social positions and self-positioning, and social boundary theory. Overall, the complexity of the nexus between social and spatial mobilities calls for a multifaceted research approach that covers various levels of analysis. Some of the contributions feature a mixed-methods approach that allows drawing a multifaceted picture of the interrelation between the perceptions of social positions and their structural features.