bluuebunny/crossref_metadata_2025 huggingface dataset:
HOW IMPORTANT ARE THE IMPLANT INCLINATION AND THE INFRASTRUCTURE MATERIAL USED IN IMPLANT SUPPORTED FIXED PROSTHESES?
Authors: KARADAYI YÜZÜKCÜ Afra Eda , YERLİYURT Kaan
Published: January 2022

Objectives: The aim of this study is to evaluate the stress , which is caused by the fixed prosthesis under oblique forces around dental implants and bone by using different infrastructure materials and different inclusions, by 3-dimensional finite element analysis method.
Materials and Methods: The 3D finite element models of the mandible, dental implants and prostheses were prepared. The anterior and posterior implants were designed 10 mm in length and 4.3 mm in diameter. The anterior implant was placed parallel to each model. Posterior implant designed to make inclinations those mesial 17, distal 17, buccal 17, lingual 17. Implant supported fixed restorations were divided into 3 main groups according to the infrastructure materials. These materials were; chromium-cobalt, zirconia, polyetheretherketone (PEEK). In each model, a total of 500 N oblique force was applied from the buccal tubercle crests to the buccolingual direction at an angle of 30 degrees to the long axis of the tooth. Maximum principal stress and minimum principal stress values in the bone models were taken. In addition, maximum von Mises stress values were obtained from implants and substructure materials.
Results: When the stress findings in the mandible during oblique loading were evaluated, it was found that the stresses on the cortical bone were higher than the stresses on the trabecular bone. It was observed that the highest stress values occurred in the implants.
Conclusions: It is thought that chromium-cobalt and zirconia-based ceramic bridge restorations are more positive in terms of stress distribution than PEEK-based ceramic bridge restorations.
EFFICACY, TOOTH SURFACE MICROHARDNESS AND ROUGHNESS AFTER TREATMENT WITH COMBINATION OF LASER AND HOME BLEACHING PROTOCOL: AN IN VITRO STUDY
Authors: AZİH Farah , MAQBOOL Manahıl , GHANİ Zuryati , HALİM Mohamad , NOORANİ Tahir
Published: January 2022

Teeth whitening or bleaching has pleased people with aesthetic concerns for long. To improve the efficacy of bleaching and reduce the ill effects on the tooth surface, a combination of power bleaching (PB) and home bleaching (HB) can be used. Objective. To compare the efficacy and effects of combinations of PB/laser bleaching (LB) and HB protocol on human natural tooth structure. Materials & methods: Eighty-eight permanent maxillary central incisors were randomly divided into four groups (n=22). After staining, teeth were bleached using different bleaching protocols: Group 0 (control), Group 1 (Laser White 20 46% hydrogen peroxide (HP) + Opalescence PF 20% carbamide peroxide (CP) – HB sequence for 3 days), Group 2 (Laser White 20 46% HP + Opalescence PF 20% CP – HB sequence for 7 days), Group 3 (Opalescence PF 20% CP – HB sequence for 14 days). Colorimetric measurement was performed, enamel surface roughness and microhardness were measured. Scanning Electron microscope (SEM) evaluation was done to compare the surface topography. Pre and post bleaching data were analysed using paired T-test. Multiple comparison between groups was carried out using one-way ANOVA complemented by Post hoc test (Bonferroni), with significance level set at P<0.05. Results: All protocols demonstrated significant efficacy to whiten stained enamel. All groups demonstrated significant increase in hardness (P<0.05). Surface roughness reduced significantly in Group 1 and 2. SEM showed that Group 1 had a similar microscopic surface appearance as unbleached enamel, while Group 3 had accentuated irregularities. Conclusion: LB followed by HB for 3 days is the most effective in whitening stained teeth with positive effects on tooth surface hardness while maintaining surface topography of dental hard tissues.
COMPARISON TENSILE STRENGTH OF DIFFERENT SUTUR MATERIALS
Authors: KUZU Turan Emre
Published: January 2022

Abstract
Objectives: The purpose of this study is to compare the tensile strength of different types of surgical suture materials.
Materials and Methods: Current study, the tensile strengths of 4 different suture materials made of different materials were compared. [(1-4/0 silk suture 2- 4/0 propylene suture 3-4/0 Polyamide suture 4- 4/0 Poly[Glycolide-Co-L-Lactide](90%:10%) (PGLA) suture)] The tensile strength of a total of 40 samples was calculated, with 10 samples in each group. In the study, the tensile strength of the sutures was calculated using a universal tester, the sutures were tightened to both poles of the test device and fixed with a distance of 15 mm between the poles, tensile force was applied so that both poles of the test device moved away from each other at a speed of 25cm/min until the sutures broke, and the force value of the sutures at the moment of brake was recorded in Newton units (N) as the tensile strength of suture.Statistical analysis of the data was evaluated by One-Way ANOVA and Tukey HSD tests.
Results: In the statistical analysis of the tensile strength of the suture materials, the difference between the tension resistance of the PGLA and Polyamide suture was not statistically significant, but the difference between all other suture materials was statistically significant (p <0.05). Tensile strength of suture materials were determined as propylene, polyamide, pgla and silk suture, respectively.
Conclusion:Within the limitation of this study.It has been stated that propylene suture may be more advantageous than PGLA, silk ,polyamide suture.
Keywords: Sutures ,Tensile ,Break
EVALUATION OF BIOMECHANICAL EFFECTS OF PROSTHETIC COMPONENTS WITH DIFFERENT MATERIALS ON THE ABUTMENT SCREW
Authors: DESTE GÖKAY Gonca , GÖKÇİMEN Gülsüm , DURKAN Rukiye
Published: January 2022

Objectives: The purpose of this study was to evaluate the effects of different resin-based and ceramic superstructure materials and two different abutment types on the stress distribution of the abutment screw using the three-dimensional finite element stress analysis method.
Materials and Methods: A three dimensional implant, abutment (zirconia and titanium), abutment screw, crown (zirconia reinforced lithium silicate, lithium disilicate, polymer-infiltrated resin ceramic, and PEEK), and alveolar bone were designed using Rhinoceros 3D modeling software and VRMesh Studio software and combined to form 8 simulations. On the models prepared, loading was made on the lingual tubercule of the maxillary right first premolar crown at an angle of 30° with 150 N force obliquely in the buccolingual direction. The von Mises values obtained from the abutment screw were compared according to the types of abutment and crown materials.
Results: The von Mises stress values in the abutment screw were higher in the models using a titanium abutment abutment (on average 1336.24 MPa), and the lower stress values were obtained in the models using a zirconia abutment (on average 964.26 MPa). When the prosthetic material used was changed, no apparent difference was observed in the stress values on the abutment screw.
Conclusions: Considering that the abutment screw is the weakest link of the implant system, zirconia abutments can be used reliably in the maxillary first premolar region where aesthetic expectations are high.
INVESTIGATION OF THE EFFECT OF HUMIC ACID ON BONE REGENERATION IN PARIETAL DEFECTS FORMED IN RATS RATLARDA OLUŞTURULAN PARİETAL DEFEKTLERDE HUMİK ASİTİN KEMİK REJENERASYONU ÜZERİNE ETKİSİNİN ARAŞTIRILMASI
Authors: ŞENGÜL Muhammet , BOSTANCI Vildan
Published: January 2022

INVESTIGATION OF THE EFFECT OF HUMIC ACID ON BONE REGENERATION IN PARIETAL DEFECTS FORMED IN RATS

ABSTRACT
Objectives: The objective of our study is to research the effect of the local humic acid on the premature new bone amount in autogenous bone graft applications.
Materials and Methods: 12-Week 24 rats of Wistar Albino species with a ranging weight of 230-250 g were used as subjects. The laboratory animals were divided into 4 groups. Those were determined as the control group, only autogenous graft-applied group, autogenous graft group applied with 100 mg/kg humic acid and autogenous graft group applied with 200 mg/kg humic acid. The bicortical bone fragment in the diameter of 5 mm at a critical size on the parietal bone of the laboratory animals was removed under physiological saline solution irrigation using an automax drill. The autogene graft obtained during the formation on the defected area was applied to the relevant experimental groups. The amount of humic acid determined for the groups of local application was applied by being mixed with the autogene graft. The laboratory animals were sacrificed on the 28th day following the procedure. Then the grafted defect area was evaluated using micro-computed tomography (Micro- CT).
Results: The highest value among trabecular thickness (Tb.Th) and the ratio of the bone volume to the tissue volume (BV/ TV) was encountered in the autogenous graft group applied with 100mg/kg humic acid. The highest value in the bone volume (BV) variance was detected in the group to which only the autogenous graft was applied. A statistically significant difference was found between the control group and the only autogenous graft-applied group and the autogenous graft group applied with local 100mg/kg humic acid upon comparing the groups in pairs for bone surface area (BS) variance. A statistically significant difference was found between the control group and the other groups in the ratio of bone surface are to the bone volume (BS/BV). BS/BV value was found higher in the autogenous graft group applied with local 200mg/kg humic acid than the autogenous group applied with local 100mg/kg humic acid.
Conclusions: The applied humic acid caused a decrease in the BV value. However, the positive effect of the humic acid application was observed in Tb.Th and BV/TV values, dosage increase negatively impacted the same. The dosage increase negatively affected the BS value. No positive effect of the humic acid application to BS/BV value was observed. The statistical significance between the control group and the other groups is considered to be autogenous graft.
Visibility Graphs of Anchor Polygons
Authors: Boomari Hossein , Zarei Alireza
Published: January 2022

The visibility graph of a polygon corresponds to its internal diagonals and boundary edges. For each vertex on the boundary of the polygon, we have a vertex in this graph and if two vertices of the polygon see each other there is an edge between their corresponding vertices in the graph. Two vertices of a polygon see each other if and only if their connecting line segment completely lies inside the polygon. Recognizing visibility graphs is the problem of deciding whether there is a simple polygon whose visibility graph is isomorphic to a given graph. Another important problem is to reconstruct such a polygon if there is any. These problems are well known and well-studied, but yet open problems in geometric graphs and computational geometry.
However, they have been solved efficiently for special cases where the target polygon is known to be a tower or a spiral polygon. In this paper, we propose a linear time algorithm to solve these recognizing and reconstruction problems for another type of polygons, named anchor polygons.
Experiencia didáctica dentro y fuera del aula: un itinerario interdisciplinar para conocer un barrio de la ciudad de Cuenca
Authors: Serrano Gil Óscar
Published: January 2022

La ciudad es un recurso didáctico para los diferentes niveles educativos por el potencial que encierra en sí misma para conocer el espacio geográfico. Por ello, el objetivo principal de este artículo es subrayar el valor que contiene el entorno urbano de la ciudad de Cuenca materializado en el estudio de uno de sus barrios con identidad propia (las Quinientas). La metodología por proyectos ha permitido la participación activa de los alumnos durante las distintas fases de realización del mismo con dos momentos capitales. El primero, mediante la aplicación de una metodología investigativa de las principales características socio-económicos indagando en los conceptos geográficos previos; y el segundo, a través de una aplicación didáctica sobre el terreno desarrollada en la salida de campo a la barriada. Los resultados obtenidos muestran un mejor conocimiento y una valoración del entorno urbano para ser utilizado como aula al aire libre.
Evaluación de la adquisición de la competencia científica entre el alumnado de Biología de la ESO y una propuesta para mejorar su habilidad en las representaciones gráficas
Authors: Franco López Antonio , Ayuso Fernández Gabriel Enrique , López-Banet Luisa
Published: January 2022

El desarrollo de la competencia científica en una enseñanza-aprendizaje por indagación basada en problemas cotidianos constituye un planteamiento beneficioso para el aprendizaje de las ciencias. En este trabajo, se analiza la adquisición de diferentes destrezas imprescindibles para la alfabetización científica de estudiantes de 3º de ESO. Para ello, se ha elaborado un cuestionario que plantea la autopercepción y conocimiento del alumnado de diferentes dimensiones de la competencia científica como identificación de problemas investigables, formulación de hipótesis, diseño experimental, construcción e interpretación de gráficos y elaboración de conclusiones. Los resultados muestran que el alumnado, a pesar de haber realizado actividades relacionadas con estas destrezas y habilidades, presenta serias dificultades para realizar tareas básicas como identificación de problemas, formulación de hipótesis, construcción de gráficas o elaboración de conclusiones. En consecuencia, describimos una propuesta de innovación coherente con la fundamentación teórica y sus resultados, centrada en la mejora de algunos de estos aspectos.
Agenda 2030 y representación socioemocional del medio ambiente en la Educación Primaria
Authors: Sánchez Giménez Laura , Morales Hernández Antonio José , Santana Martín Diana
Published: January 2022

¿Existe una correlación entre las emociones y representaciones sociales que los escolares tienen sobre el medio ambiente capaz de incidir en el desarrollo de los Objetivos de Desarrollo Sostenible de la Agenda 2030? A partir de esta inquietud hemos planteado un estudio de casos en tercer ciclo de Educación Primaria. Para ello hemos solicitado a 117 estudiantes que realicen un dibujo sobre el medio ambiente asociándolo a la emoción que les provoca. Los resultados evidencian tendencias de correlación entre las emociones básicas y las representaciones sociales del medio ambiente. Se distingue la asociación de representaciones naturalistas y antropocéntricas del medio ambiente con emociones positivas o neutras. Así mismo, las representaciones globalizantes se identifican con una percepción de la problemática ambiental desde una doble óptica emocional: más angustiada o más serena. Todo ello muestra indicios de la existencia de una serie de etapas en la interiorización de la Educación Ambiental.
Conocimiento científico, problemas socioambientales y formación inicial del Profesorado de Primaria
Authors: Lopez-Lozano Lidia , Rodríguez Marín Fátima , Solís Ramírez Emilio
Published: January 2022

Sin duda, la compleja situación socioambiental actual requiere de una cultura científica que proporcione a la ciudadanía herramientas para intervenir en su realidad. En el contexto de la formación del profesorado, esto toma mayor relevancia si entendemos la educación como motor transformador de una sociedad. Así, presentamos una investigación basada en el diseño y desarrollo de una propuesta didáctica para el aprendizaje de la construcción del conocimiento científico y su construcción social, en el contexto de una problemática socioambiental sobre la que deben emitir un juicio: la ganadería intensiva. El tratamiento multidisciplinar de dicha problemática nos permite, primeramente, presentar la red de problemas y contenido que se han prestado a investigación y, seguidamente, conocer el grado de aprendizaje de los principales rasgos de la metodología investigativa. Se han analizado los 12 proyectos de investigación elaborados por un grupo de estudiantes del Grado en Educación Primaria.
Hereros y Namas: el comienzo de los genocidios en el siglo XX. Análisis desde la perspectiva de la geografía de la memoria
Authors: Nin María Cristina
Published: January 2022

En el presente artículo se sistematiza el proceso genocida que sufrieron los pueblos Hereros y Namas en África Sudoccidental a principios del siglo XX. El principal propósito es el de generar el intercambio y debate tanto en el ámbito de la investigación como en el educativo. La perspectiva geohistórica de los procesos de construcción territorial contribuye a comprender el presente en relación al pasado. A partir de metodología interpretativa, fuentes secundarias y el genocidio como categoría conceptual, se deconstruye la compleja trama territorial marcada por violencias. Se concluye que la memoria es una construcción colectiva y que, junto a los otros cuatro pilares de la justicia transicional: la verdad, la justicia, la reparación y las garantías de no repetición, depende que en el futuro se construyan sociedades y territorios con convivencia pacífica.
Felipe B. Pedraza Jiménez y Milagros Rodríguez Cáceres (eds.): “Antonio Enríquez Gómez Cuatro Obras Políticas…”
Authors: Gómez Caballero Iván
Published: January 2022

Reseña de Felipe B. Pedraza Jiménez y Milagros Rodríguez Cáceres (eds.): Antonio Enríquez Gómez Cuatro Obras Políticas: INQUISICIÓN DE LUCIFER, LUIS DADO DE DIOS, MÁRTIR Y REY DE SEVILLA, SAN HERMENEGILDO, EL REY MÁS PERFETO
Something is coming: La iconoclasia anticolonial hispánica en los Estados Unidos
Authors: Aloy Ricart Rita , Sola Rubio Nathaniel
Published: January 2022

La iconoclasia ha sido una práctica constante pero cambiante a lo largo del tiempo. En este sentido, el presente artículo estudiará la “iconoclasia anticolonial” contemporánea imbricada al territorio estadounidense, ejercida, específicamente, sobre conmemoraciones que celebran la expansión peninsular en el país, mediante monumentos designados a Cristóbal Colón o Fray Junípero Serra. Por tanto, se analizarán las razones del surgimiento de esta oleada iconoclasta y su difusión, sujetas al sentido de la identidad y el conflicto de la preservación tradicional, manteniendo como principal motor la plusvalía ejercida sobre las imágenes.
Intersecciones genéricas. Autoetnografía y autobiografía en Transgenerismos (2006) de Norma Mejía
Authors: Martínez Gil Juan
Published: January 2022

Transgenerismos (2006) de Norma Mejía fue la primera tesis doctoral sobre la transexualidad defendida en España por una persona trans. No obstante, el texto posee un valor añadido, ya que puede leerse en clave autobiográfica debido a sus características textuales. En el presente trabajo indagaremos las posibilidades de esta lectura autobiográfica a partir de los desplazamientos que produce la metodología antropológica a la que se adscribe su autora, la autoetnografía. A continuación, mostraremos los mecanismos que Mejía utiliza para dialogar en su escritura con ambas convenciones, la literaria y la académica
Raquel Macciuci (ed.): "Manuel Vicent: Contra Paraíso"
Authors: Sánchez Mariela
Published: January 2022

Reseña sobre la edición crítica de Raquel Macciuci de la obra Contra paraíso de Manuel Vicent.
Gemma Pellicer: "Medidas Extremas"
Authors: Hernández García Carlos
Published: January 2022

Reseña de Gemma Pellicer: Medidas Extremas.
Īpašnieku vadītu mazo un vidējo uzņēmumu pārvaldība
Authors: Millers Māris
Published: January 2022

Promocijas darbā pētīts, kā laika gaitā veidojusies un mainījusies izpratne par mazajiem un vidējiem uzņēmumiem (MVU), šādu uzņēmumu īpašniekiem-vadītājiem, kā ir attīstījušās uzņēmumu pārvaldības pieejas. Veikts empīrisks pētījums par īpašnieku vadītu MVU pārvaldību, un pētījuma dati ir analizēti, izmantojot statistiskās analīzes un rezultātu vizuālās analīzes metodes. Darbā piedāvāta jauna MVU īpašnieku-vadītāju tipoloģija, veikta uzņēmumu pārvaldības pieeju profilēšana, kā arī izstrādāta un aprobēta metodika, ko MVU īpašnieki un vadītāji var izmantot savu uzņēmumu darbības analīzei un attīstībai.
Advancement of the Entrepreneurial Mindset as a Driving Force for the Creation of a Successful Born Global Strategy
Authors: Vaivode Irēna
Published: January 2022

The Doctoral Thesis is devoted to the field of entrepreneurial mindset and its interaction with the process of the creation of a successful born global strategy. Entrepreneurial mindset is the research object of the Doctoral Thesis, it refers to a specific state of mind, which orientates a human towards entrepreneurial activities and outcomes. Successful born global strategy is considered as the outcome of the dynamic process of entrepreneurial mindset. The present Doctoral Thesis covers research on the role of the individual level characteristics of entrepreneurial mindset as basis for running born global companies.
Między populizmem a barbarzyństwem: analiza figury Evity Peron
Authors: Geremek Zuzanna
Published: January 2022

Eva Duarte de Perón, druga żona argentyńskiego prezydenta Juana Domingo Perona, odcisnęła piętno nie tylko na XX wiecznej historii polityki argentyńskiej, lecz także na kształtowaniu się tożsamości narodowej Argentyńczyków. Postać ta jest wciąż żywa w literaturze, sztuce, twórczości dramatycznej i w popkulturze. W artykule przeanalizujemy w jaki sposób figura Evy Duarte była wykorzystywana przez ruch peronistyczny w Argentynie. Spróbujemy też wykazać, jak ważną, również symbolicznie, rolę odegrała i wciąż odgrywa w kształtowaniu się tożsamości argentyńskiej. Istotą artykułu będzie zatem wykazanie, iż Evita operuje w argentyńskim imaginarium społecznym nie tylko na poziomie historycznym, lecz także jako artefakt kultury, co zwiększa zasięg jej społecznego oddziaływania. Metodologicznie artykuł czerpie z teorii populizmu Ernesto Laclaua, teorii abiektu Julii Kristevy, oraz prac Martina Kohana, Paoli Cortés Rocca oraz Elsy Drucaroff. Mit Evity, z jej różnymi wariantami, skonfrontujemy z wizją kobiecości wypracowaną przez teorie feministyczne, by odpowiedzieć na szereg pytań: Jaka była jej rola w formowaniu się myśli peronistycznej? Czy rzeczywiście możemy uznawać ją za model feministki-rewolucjonistki? Czy sława Evity nie sprawiła, iż zamiast być podmiotem tworzącym dyskurs, stała się jego ofiarą?
The Role of Trait Competitiveness and Entrepreneurial Alertness in the Cognitive Process of Entrepreneurship Among Students: A Cross-Cultural Comparative Study Between Vietnam and Poland
Authors: Duong Cong Doanh , Le Thi Loan , Ha Ngoc Thang
Published: January 2022

Our study aims to explore the influences of trait competitiveness and entrepreneurial alertness on the cognitive process of entrepreneurship in the cross-cultural context of Vietnam and Poland, two emerging nations with different levels of economic and social development. To achieve this research goal, two student questionnaire surveys were carried out at universities and institutes in Vietnam and Poland. Structural equation modelling (SEM) with a bootstrapping approach was utilised to test the proposed hypotheses and conceptual model. Eight hypotheses were statistically supported by the Vietnamese dataset, confirming the significant and positive effects of both trait competitiveness and entrepreneurial alertness on the cognition process of entrepreneurship. However, for the Polish data, trait competitiveness was not found to be associated with an entrepreneurial attitude, perceived behaviour control, or entrepreneurial intention, while entrepreneurial alertness was positively related to perceived behavioural control. Our study has significantly contributed to the entrepreneurship literature by increasing the knowledge about the central role of trait competitiveness and entrepreneurial alertness on the cognitive process of business ventures in two emerging countries, where to the best of our knowledge, few studies related to our topic have been researched. Moreover, practical contributions are also offered for educational institutions and practitioners to stimulate university students’ business venturing activities.
Competitiveness of the Regions in the Czech Republic from the Perspective of Disaster Risk Financing
Authors: Oulehlova Alena , Kudlak Ales , Urban Rudolf , Hoke Eva
Published: January 2022

Mitigation of the impact of disasters and increasing resilience represent an inseparable part of the competitiveness of regions that cannot be implemented without a necessary resource framework. The paper focuses on the issue of financing individual phases of disaster management at the level of regions in the Czech conditions. The article is based on the assumption that public authorities do not systematically plan funds for dealing with crisis situations in the expenditure part of the budget, thereby not supporting the structural and functional conditions of territorial attractiveness, security and sustainability. The aim of the article is to propose a unique calculation of the minimum fund allocation for individual phases of disaster risk reduction at the regional level. The calculation concept is based on the value of the property owned by the region, the number of crisis situations predicted in the region, the number of crisis situations predicted in the Czech Republic, the administrative territory of the region and the total expenditures of the regional budget. The article presents a specific national approach to the public fund allocation to the individual disaster risk management phases, providing competitive administration and progressive and resilient development of the region. Based on the originally elaborated calculation, a comparative analysis of the expenditure part of 13 regional budgets for the 2013– 2019 period was performed. The premise on the insufficient financing of disaster management was confirmed, although the Crisis Management Act imposes this obligation. The results showed that the most underfunded area was the implementation phase.
Bonds Between Earnings Management and Corporate Financial Stability in the Context of the Competitive Ability of Enterprises
Authors: Valaskova Katarina , Androniceanu Ane-Mari , Zvarikova Katarina , Olah Judit
Published: January 2022

The financial health of enterprises and their continued profitability and competitiveness in the market are influenced considerably by the level of earnings achieved. Enterprises are forced to report the best possible results to demonstrate financial strength and competitiveness and to provide a good accounting for investors and creditors. Thus, the main objective of the study is to investigate whether there is any mutual dependence between corporate financial stability and earnings management. To measure these categories, Altman’s Z score was used to determine the financial health of enterprises, and the Beneish M-score and modified Jones model were applied to detect earnings manipulation. Using the chi-square test, the results revealed a statistically significant dependence between financial distress and earnings manipulation. Then, a multivariate statistical technique of correspondence analysis was applied to the categorical data to find categories of factors that are mutually correspondent. Based on a dataset of 11,105 enterprises operating in the Visegrad countries, the results found that enterprises that are threatened by bankruptcy or located in the gray zone tend to manipulate their earnings to maintain credibility, creditworthiness, and competitiveness. Because the financial health of an enterprise provides a potential incentive for earnings manipulation, state authorities, regulators, and policy-makers may benefit from the findings of the study.
A Note on the Representation of Clifford Algebras
Authors:   Marin Drinov Academic Publishing House, Gu Ying-Qiu
Published: January 2022

In this note we construct explicit complex and real faithful matrix representations of the Clifford algebras $\Cl_{p,q}$. The representation is based on Pauli matrices and has an elegant structure similar to the fractal geometry. In the cases $p+q=4m$, the representation is unique in equivalent sense, and the $1+3$ dimensional space-time corresponds to the simplest and best case. Besides, the relation between the curvilinear coordinate frame and the local orthonormal basis in the curved space-time is discussed in detail, the covariant derivatives of the spinor and tensors are derived, and the connection of the orthogonal basis in tangent space is calculated. These results are helpful for both theoretical analysis and practical calculation. The basis matrices are the faithful representation of Clifford algebras in any $p+q$ dimensional Minkowski space-time or Riemann space, and the Clifford calculus converts the complicated relations in geometry and physics into simple and concise algebraic operations. Clifford numbers over any number field $\mathbb{F}$ expressed by this matrix basis form a well-defined $2^n$ dimensional hypercomplex number system. Therefore, we can expect that Clifford algebras will complete a large synthesis in science.
Twisted Sasakian Metric on the Tangent Bundle and Harmonicity
Authors:   Marin Drinov Academic Publishing House, Latti Fethi , Elhendi Hichem , Belarbi Lakehal
Published: January 2022

In the present paper, we introduce a new class of natural metrics on the tangent bundle $TM$ of the Riemannian manifold $(M,g)$ denoted by $G^{f,h}$ which is named a twisted Sasakian metric. A necessary and sufficient conditions under which a vector field is harmonic with respect to the twisted Sasakian metric are established. Some examples of harmonic vector fields are presented as well.
Genome-wide identification and characterization of the CLASP_N gene family in upland cotton (Gossypium hirsutum L.)
Authors: Ji Meijun , Sun Kangtai , Fang Hui , Zhuang Zhimin , Chen Haodong , Chen Qi , Cao Ziyi , Wang Yiting , Ditta Allah , Khan Muhammad Kashif Riaz , Wang Kai , Wang Baohua
Published: January 2022

Background

Cytoplasmic linker–associated proteins (CLASPs) are tubule proteins that can bind to microtubules and participate in regulating the structure and function of microtubules, which significantly affects the development and growth of plants. These proteins have been identified in Arabidopsis; however, little research has been performed in upland cotton.

Methods

In this study, the whole genome of the CLASP_N family was analyzed to provide theoretical support for the function of this gene family in the development of upland cotton fiber. Bioinformatics was used to analyze the family characteristics of CLASP_N in upland cotton, such as member identification, sequence characteristics, conserved domain structure and coevolutionary relationships. Real-time fluorescent quantitative PCR (qRT-PCR) was used to clarify the expression pattern of the upland cotton CLASP_N gene family in cotton fiber.

Results

At the genome-wide level, we identified 16 upland cotton CLASP_N genes. A chromosomal localization analysis revealed that these 16 genes were located on 13 chromosomes. The motif results showed that all CLASP_N proteins have the CLASP_N domain. Gene structure analysis showed that the structure and length of exons and introns were consistent in the subgroups. In the evolutionary analysis with other species, the gene family clearly diverged from the other species in the evolutionary process. A promoter sequence analysis showed that this gene family contains a large number of cis-acting elements related to a variety of plant hormones. qRT-PCR was used to clarify the expression pattern of the upland cotton CLASP_N gene family in cotton fiber and leaves, and Gh210800 was found to be highly expressed in the later stages of fiber development. The results of this study provide a foundation for further research on the molecular role of the CLASP_N genes in cotton fiber development.
Management of Postcaesarean Delivery Analgesia-Diclofenac Suppository, Paracetamol Infusion and a Combination
Authors: Reddy Mandem Sadana , Munisamaiah Munikrishna
Published: January 2022

Introduction: One of the most important aspect of postoperative care is pain management which plays an important role in early recovery and improves patient’s general condition. Paracetamol and diclofenac have an excellent safety profile when compared to opioids. Aim: To assess and compare the analgesic efficacy and safety of individual use of Intravenous (IV) paracetamol, diclofenac suppository and in combination. Materials and Methods: This hospital-based cross-sectional study was conducted from October 2018 to June 2020 at Department of Obstetrics and Gynaecology. A total of 90 women who underwent caesarean section were recruited for the study and were randomly allocated (lottery method) into three groups with 30 participants in each group. The patients underwent Lower Segment Caesarean Section (LSCS) under spinal anaesthesia with the same technique and medicine, (Bupivacaine 0.5%) without receiving any sedation. Group A patients received diclofenac suppository 50 mg every eight hourly, Group B received paracetamol infusion 1000 mg every eight hourly and Group C received 50 mg diclofenac suppository and 500 mg IV paracetamol every eight hourly. Pain severity (Visual Analogue Scale (VAS) score), Heart Rate (HR), Blood Pressure (BP) and side-effects were evaluated at 2,4,6,8,12 and 24 hours postoperatively. Patient satisfaction score was evaluated 24 hours after caesarean section. Results: Age range of participants was 19 to 28 years. Mean duration of surgery (minutes) in each group were- Group A-56.5±7.49, Group B-58.27±8.06 and Group C-56.97±6.78, respectively. There was a significant reduction of pain in patients receiving paracetamol and diclofenac suppository combination group. The satisfaction score was categorised as excellent by 80% patients in Group C. In Group A 30% and in Group B 16.6% categorised as excellent patient satisfaction score. The adverse effects such as nausea and epigastric discomfort was higher (7.7%) with diclofenac suppository group followed by Paracetamol (2.2% side-effects) and minimal with combination (1%). Conclusion: Paracetamol infusion is as effective as diclofenac suppository in reducing postoperative pain following caesarean section. Diclofenac suppository and IV paracetamol combination provides more effective postoperative analgesia compared with individual usage of IV paracetamol or diclofenac suppository in patients following caesarean section. The combined use of paracetamol and diclofenac suppository has fewer side-effects compared with individual use of either IV paracetamol or diclofenac suppository.
Use of Adipofascial Reverse Sural Artery Flap for Distal Leg and Ankle Region Reconstruction- A Prospective Cohort Study
Authors: Sinha Archana , Dash Suvashis , Sharma Sneha , Sharma Sunil
Published: January 2022

Introduction: Though distally based sural artery fasciocutaneous flap is a good choice for distal leg and ankle reconstruction, shortcomings like venous congestion and flap bulkiness are matters of concern. Aim: To assess the utility of adipofascial flap for distal leg and ankle reconstruction, complications, and long-term functional results with range of motion at ankle joint. Materials and Methods: A prospective cohort study (January 2018 to December 2019) was conducted at Safdarjung Hospital, New Delhi, India on patients having distal leg defect and ankle defects reconstructed with Distally Based Sural Artery Adipofascial Flap (DBSAAF). Participants of any age and aetiology were included in the study while polytrauma patients, life-threatening injuries, mangled extremity patients were excluded. Postoperatively flap survival, complications and functional outcome were assessed. Results: Total 21 patients with above defects had undergone DBSAAF reconstruction. Fifteen (71.4%) patients were males and 6 (28.6%) were females, with mean age of 34.85 years. Causes of defect were road traffic injury in 6 (28.6%) patients, additional Tendoachilles tear was repaired in 5 (23.8%) patients. Four (19%) patients had avulsion injury, 3 (14.3%) patients had postburn unstable scar, and chronic ulcer was found in 3 (14.3%) patients. The maximum defect size was 8.5×7 cm (mean of 5.24×4.34 cm). The width of flap pedicle was kept at 4 cm maximum (mean=3.04 cm). All flaps were transported to the defect site by incising the intervening bridge, tunneling was not done. Fourteen patients did not have any co-morbidity, whereas four patients were chronic smokers, and three were diabetics. Flap survived completely in all patients. Three patients had partial graft loss and one patient had chronic discharge. Follow-up for maximum of six months (mean=4.04 months) were done. Conclusion: DBSAAF is a reliable flap for defects of distal leg and ankle region. Advantages are aesthetically better donor area, normal contour, and minimal scarring. It does not require a secondary debulking making it a one stage procedure and allowing patients to use their normal footwear.
Ophthalmic manifestations of psoriasis
Authors: Katoch Kritika , Sharma Ratan Kumar , mahajan Vikram , Tuli Rajeev
Published: January 2022

Psoriasis is a common chronic inflammatory and proliferative condition of the skin associated with systemic manifestations. The relationship between the eye and psoriasis has been recognized for decades, but the precise eye manifestations in patients with psoriasis and psoriatic arthritis are only recently coming to light. Ocular involvement occurs in 10% of patients with psoriasis. Ophthalmic manifestations include blepharitis, dry eye, meibomian gland dysfunction, nonspecific conjunctivitis, punctate keratitis, corneal recurrent erosions, vascularisation, ulceration, scarring and even melting. Anterior uveitis is another psoriasis associated manifestation involving 7% to 25% of patients with psoriatic arthritis. Retinal vasculitis, cystoid macular edema, and papillitis are other uncommon changes seen. Various topical and systemic therapies used to treat psoriasis too can affect eyes, which includes conjunctiva hyperaemia, dry eye, blepharitis, blepharoconjunctivitis, keratitis, corneal opacities, cataract, and deceased night vision.
Bilateral Buried Optic Nerve Head Drusen Mimicking Idiopathic Intracranial Hypertension
Authors: Sahu Juhi , Vallinayagam Muthukrishnan , Alekhya C
Published: January 2022

Optic nerve head (ONH) drusen are buried deposits in the optic nerve head simulating papilloedema. Idiopathic Intracranial Hypertension (IIH) signifies raised intracranial pressure in the absence of intracranial space occupying lesion. A 35-year old woman diagnosed elsewhere with IIH and treated with oral acetazolamide for six months, presented with non-specific headache. Fundus showed bilateral blurring of disc margins, elevated disc and obscuration of cup. MRI of brain was normal. The non-resolution of disc edema despite six months of acetazolamide therapy raised suspicion of an alternate diagnosis. Ultrasound B-scan confirmed the diagnosis of ONH drusen. ONH drusen should be excluded before entertaining the diagnosis of IIH.
Ophthalmic Manifestations of Immunoglobulin G4-Related Disease (IgG4-RD)
Authors: Agarwal Ayushi , Khanam Samreen , Raut Akash , Goel Ruchi
Published: January 2022

Immunoglobulin-G4 related disease (IgG4-RD) is an inflammatory disorder of unknown etiology that comprises a wide spectrum of presentation, involving nearly all the bodily systems. A number of clinical conditions which were previously identified as distinct entities, such as autoimmune pancreatitis, Reidel thyroiditis, and Mikulicz syndrome, have now come within the purview of this disease. The clinical expression of IgG4-RD varies depending upon the organ involved. The authors in this article aim to highlight the various ophthalmic manifestations of IgG4-RD.
Developments on the Bioactive Compounds and Food Uses of the Tubers: Colocasia esculenta (L) Schott (Taro) and Xanthosoma sagittifolium (L) Schott (Tannia)
Authors: Mba C. J. , Agu H. O.
Published: January 2022

Two varieties of Cocoyam Colocasia esculenta (L) Schott (Taro) and Xanthosoma sagittifolium (L) Schott (Tannia) are experiencing renewed interest not only in Africa but also in the rest of the world. They are considered to be cheaper sources of carbohydrates than cereals or other bulbous crops because of their high calorie yield per hectare, low production costs, and relatively low susceptibility to insect and pest infestation. In addition to their nutritional benefits, they contain bioactive compounds such as polyphenols, proteins, mucilage, polysaccharides, lipids and anti-polyphenol antioxidants. These bioactive compounds have been shown to provide consumers with health benefits such as anti-cancer, anti-inflammatory, antioxidant and dyslipemic properties. Interestingly, you don't need to consume the raw tubers or leaves to get these numerous health benefits, as the different parts of the plants which are nutrient-dense, have been used in various food applications such as flour, chips, poi, syrup, weaning foods for babies, local delicacies, and starch production. These products compete favourably with products from other root and tuber crops. Therefore, this article describes various value-added products made from Cocoyam that can be consumed to reap the numerous health benefits associated with consuming Cocoyam.
Determination of Functional Properties of Sri Lankan Ambarella (Spondias dulcis Forst. syn. Spondias cytherea Sonn.) Fruit and Development of Vacuum Dried Ambarella Fruit Powder and Incorporated Soup Mix
Authors: Navoda N. P. G. D. , Samaranayake M. D. W. , Liyanage S. L. , Herath H. M. T. , Jayasinghe J. M. J. K.
Published: January 2022

Objective: To develop vacuum dried (VD) Ambarella fruit powder and Ambarella fruit incorporated soup mix from large and miniature Ambarella and investigation of antioxidants and anti-diabetic properties.

Methods: Ethanolic extracts of two Ambarella varieties were analyzed for antioxidant potential in terms of total phenolic content (TPC), total ﬂavonoid content (TFC), ferrous reducing antioxidant power (FRAP), radical scavenging activities of DPPH and ABTS and α-amylase inhibitory activity.

Results: Fresh dwarf Ambarella showed a significantly (p<0.05) high TPC (3.35±0.10 mgGAE/g) while fresh large Ambarella showed a significantly (p<0.05) high FRAP (0.71±0.13 mgTE/g) and DPPH (3.57±0.31 mg TE/g). In comparison of ethanolic extracts of VD Ambarella powders, a significantly (p<0.05) higher antioxidant potential in terms of FRAP (4.19±0.06 mgTE/g) exhibited in dwarf variety while significantly (p<0.05) higher ABTS (4.03±0.27 mgTE/g) and DPPH (3.00±0.49mgTE/g) exhibited in large Ambarella. Alpha amylase inhibition activities of fresh fruits of large and dwarf were 46.30±4.07% and 49.55±3.18% where as in VD powders were 27.59±5.03% and 15.58±5.86% respectively. An instant soup mixture was developed incorporating 20% of VD powder from large variety due its abundance. The antioxidant potential of ethanolic extract of the soup mixture in terms of TPC, TFC, ABTS, and FRAP were 0.55±0.00 mgGAE/g, 0.04±0.00 mgQE/g, 1.65±0.06 mgTE/g, and 0.04±0.15 mgTE/g. Alpha amylase inhibition activity of soup mixture was 39.49±0.29%.

Conclusion: The both types of fresh fruits exhibited higher antioxidant potential except FRAP and higher anti-amylase inhibition than VD Ambarella powder.
Synthesis and Characterization of Barium-Iron Oxide Based Neodymium, Gadolinium and Praseodymium Doped Ceramic Materials
Authors: Aytimur Arda , Koçyiğit Serhat , Uslu Ibrahim
Published: January 2022

Neodymium, gadolinium, and praseodymium doped barium-iron oxide ceramic materials were synthesized by polymeric precursor method. No carbon contents or the moisture was observed in infrared spectra of the ceramics. Neodymium and gadolinium doped ceramics were crystallized in cubic lattice form, while praseodymium doped ceramic was formed in hexagonal lattice. Same results were observed from SEM images, Neodymium and gadolinium doped ceramics had similar morphological structures, but praseodymium doped ceramics had slightly different morphology. Neodymium and gadolinium doped ceramics consisted of grain-like structure, while praseodymium doped ceramic material consisted of both grain-like and pillar-like crystal structures.
Purification and Characterization of Superoxide Dismutase Enzyme from Punica granatum L.
Authors: Ozdemir Caglar , Gulesci Nuri , Bilgin Ramazan
Published: January 2022

Superoxide dismutase (SOD) constitutes a very important antioxidant defense against oxidative stress in the body. SOD is found aplenty in many organisms, from microorganisms to plants and animals. Pomegranate (Punica granatum L.) peels and fruits have been used in traditional medicine. In this study, SOD (E.C 1.15.1.1) was purified from Punica granatum L. For this purpose, Punica granatum L. was homogenized centrifuged, fractioned with ammonium sulfate to precipitate, and then DEAE chromatography separation was applied.  Punica granatum L. was purified 16.60-fold. SOD enzyme-specific activity was found as 166 U/mg protein.
Assessment of the Wound Healing Property of the Ethanolic Seed Extract of Eleusine coracana Linn using the Chorioallantoic Membrane Model
Authors: Bot K. J. , Agwom F. M. , Kim K. , Chollom S. C. , Odumosu P. O. , Ochekpe N. A.
Published: January 2022

Access to readily available material for wound healing is very important. The wound healing property of Eleusine coracana a food source in Nigeria was therefore investigated. The ethanolic crude extract of the seed flour was prepared using maceration and qualitative phytochemical screening was carried out on the crude extract using standard methods. The antimicrobial activity of the E. coracana extract was determined using the disc diffusion method against E. coli, S. aureus, P. aeruginosa, and C. tetani. The wound healing property assay was carried out using the Chorioallantoic Membrane Model (CAM) at 50mg, 100mg, 150mg, and 200mg/ml concentration with the basic Fibroblast Growth Factor (bFGF) as the positive control. The crude extract was further fractionated into Hexane, Methanolic, and Aqueous fractions and then subjected to amino acid content analysis using the Applied Biosystems Phenylthiohydantoin (PTH) Amino Acid Analyzer. The phytochemical screening reveals the presence of alkaloids, steroids, terpenes, flavonoids, carbohydrates, glycoside, and protein. E. coli and S. aureus were susceptible to the E. coracana extract at a Minimum Inhibitory Concentration (MIC) of 50µg/ml while the P. aeruginosa was only susceptible at 200µg/ml and C. tetani was not susceptible at all the concentrations used. An increase in percentage angiogenesis was observed at all doses of the extract used indicating good wound healing properties. The amino acid profile reveals the presence of glycine, a proline that is important in wound healing. The E. coracana seeds, therefore, have wound healing properties based on the CAM model.
A PANDEMIA COVID-19 E O TELETRABALHO NA PREVIDÊNCIA SOCIAL (PS)
Authors: Ângela de Souza Edvânia
Published: January 2022

Há um fato muito significativo que transfere o trabalho das instituições públicas e privadas para os espaços domésticos, que é a pandemia causada pelo novo coronavírus, Covid-19. Medidas de enfrentamento à pandemia preveem o distanciamento social, portanto, o trabalho vem sendo realizado de forma remota, todavia, a sua manifestação antecede à pandemia e vincula-se ao desenvolvimento tecnológico e às medidas neoliberais. Objetiva-se discutir o trabalho remoto na Previdência Social (PS) no Brasil. Foram realizadas entrevistas semiestruturadas com analistas de seguro social da PS. Evidencia-se que o teletrabalho resulta de um processo dialético, que implica na maior flexibilidade do horário de trabalho e, paradoxalmente, na ausência de condições adequadas, numa equação de elevada demanda, poucos trabalhadore\a(s), exigência de cumprimento de metas, responsabilidade pelas condições adequadas para o trabalho realizado em casa, individualização e, em consequência, maior sobrecarga laboral, estresse e sofrimento mental relacionada ao trabalho.