bluuebunny/crossref_metadata_2025 huggingface dataset:
Fast Simulation for the Super Charm-Tau Factory Detector
Authors: Barnyakov Alexander , Belozyorova Maria , Bobrovnikov Victor , Kononov Sergey , Kyshtymov Dmitriy , Maksimov Dmitry , Razuvaev Georgiy , Sukharev Andrey , Todyshev Korneliy , Vorobyev Vitaliy , Zhadan Anastasiia , Zhadan Daniil
Published: November 2022

The Super Charm-Tau factory (high luminosity electron-positron collider with 3-7 GeV centre mass energy range) experiment project is under development by the consortium of Russian scientific and education organisations. The article describes the present status of the Super-Charm Tau detector fast simulation and algorithms it is based on, shows some usage recipes, and demonstrates first simulation results.
Bifurcation of Limit Cycles and Isochronous Centers on Center Manifolds for a Class of Cubic Kolmogorov Systems in R3
Authors: Gu Jieping , Zegeling Andr´e , Huang Wentao
Published: November 2022

Our work is concerned with the number of limit cycles and isochronous center conditions for a class of three-dimensional cubic Kolmogorov systems with an equilibrium point in the positive octant where the system has biological meaning. A formal series method of computing singular point values (equivalent to focal values) is applied to investigate the Hopf bifurcation and center problem on center manifolds for the Kolmogorov system. Using this we derive two sets of conditions for the equilibrium point to be a center on a center manifold for the system, and prove that at most seven small-amplitude limit cycles can be bifurcated from an isolated positive equilibrium point. We prove that seven limit cycles can be created in this way, obtaining a new result on the number of limit cycles in three-dimensional cubic Kolmogorov systems. Moreover, two sets of necessary conditions for the existence of an isochronous center on the center manifold for such systems are obtained by the computation of period constants. The Darboux theory of linearizability is applied to show the sufficiency of the conditions.
Mathematics Subject Classification (2010). 34C05, 34C07.
Anisotropy-mediated reentrant localization
Authors: Deng Xiaolong , Burin Alexander , Khaymovich Ivan
Published: November 2022

We consider a 2d dipolar system, d=2d=2,
with the generalized dipole-dipole interaction
\sim r^{-a}∼r−a,
and the power aa
controlled experimentally in trapped-ion or Rydberg-atom systems via
their interaction with cavity modes. We focus on the dilute dipolar
excitation case when the problem can be effectively considered as
single-particle with the interaction providing long-range dipolar-like
hopping. We show that the spatially homogeneous tilt
\betaβ
of the dipoles giving rise to the anisotropic dipole exchange leads to
the non-trivial reentrant localization beyond the locator expansion,
a<da<d,
unlike the models with random dipole orientation. The Anderson
transitions are found to occur at the finite values of the tilt
parameter \beta = aβ=a,
0<a<d0<a<d,
and \beta = a/(a-d/2)β=a/(a−d/2),
d/2<a<dd/2<a<d,
showing the robustness of the localization at small and large anisotropy
values. Both exact analytical methods and extensive numerical
calculations show power-law localized eigenstates in the bulk of the
spectrum, obeying recently discovered duality
a↔2d-aa↔2d−a
of their spatial decay rate, on the localized side of the transition,
a>a_{AT}a>aAT.
This localization emerges due to the presence of the ergodic extended
states at either spectral edge, which constitute a zero fraction of
states in the thermodynamic limit, decaying though extremely slowly with
the system size.
New Pd(II)PPh3 Complex Bearing Meta-Cyanobenzyl-Substituted NHC: Crystal Structure and Computational Studies
Authors: ŞEN Betül
Published: November 2022

Crystal structure of palladium(II) complex containing meta-cyanobenzyl substituted NHC and triphenylphosphine were established by single-crystal XRD method. The molecular geometry in optimized form has been studied based on DFT/B3LYP hybrid functional method using the GEN basis set. The HOMO and LUMO analyses are used to compute the energy gap and to determine a number of molecular properties including softness, hardness, chemical potential, and electronegativity. Besides, the molecular stability due to hyperconjugative interactions and charge delocalization have been executed benefiting from the natural bond orbital analysis. Also, atomic charge analysis was conducted by the DFT method.
Critical Care Nurses’ Perceptions of Enteral Nutrition: A Descriptive Cross-Sectional Study
Authors: Al-Sayaghi Khaled Mohammed , Alqalah Talal Ali Hussein Saad , Alkubati Sameer Abdulmalik , Alrubaiee Gamil Ghaleb , Alshoabi Sultan Abdulwadoud , Atrous Masouda Hassan , Mohamed Farida Khalil Ibrahim , Alsultan Kamal Dahan , Suliman Awadia Greeballah , Gameraddin Moawia Bushra , Fadlalmola Hammad Ali , Alwesabi Sadeq Abdo Mohammed , Alsabri Mohammed
Published: November 2022

Background and Objective:

Nutritional support is an essential component of critical care with a significant effect on the outcomes of critically ill patients. Critical care nurses are in a central position to achieve nutritional goals and preserve the nutritional status of patients at best. This study aimed to investigate the critical care nurses’ perceptions of the responsibility, knowledge, and documentation system support regarding enteral nutrition.

Methods:

Data were collected from 292 critical care nurses in different healthcare sectors in Sana’a, the capital of Yemen, using a quantitative, descriptive, cross-sectional design. A self-administered questionnaire containing 50 items was used for data collection. The data were collected between March and June 2021. The Statistical Package for the Social Sciences (SPSS) version 16 was used for the data analysis.

Results:

The study found that most critical care units did not have guidelines, protocols, or a nutritional support team, and the physicians prescribed enteral nutrition. The critical care nurses perceived they had a low responsibility, insufficient knowledge, and moderate documentation support regarding enteral nutrition. The nurses in private hospitals had the highest responsibility, the nurses who received in-service education about enteral nutrition reported the highest level of knowledge, and the nurses in the Neuro critical care units had the best support from a documentation system. Scientific workshops and conferences were the main sources of knowledge regarding enteral nutrition. The nurses’ educational needs included the ability to evaluate the outcomes, goal setting, and nutritional assessment.

Conclusions:

The critical care nurses perceived a low responsibility, low level of knowledge, and moderate support from a documentation system regarding enteral nutrition. There is an urgent need to create or adopt enteral nutrition evidence-based guidelines and protocols and establish a multidisciplinary nutritional support team with clear roles and responsibilities. In-service education and training related to enteral nutrition are paramount.
Review on Terahertz Metamaterial Absorbers
Authors: Jia Haoduo , Tang Xin , Li Ming , Wu Dai , Li Peng , Wang Jianxin , Zhu Xinghua , Yang Dingyu
Published: November 2022

Absorbers are devices that internally consume electromagnetic waves to partially or
completely attenuate them. The basic idea is to absorb electromagnetic radiation by resonating the
intended surface with the incident electromagnetic waves. This article focuses on the development
of the absorber (from single-band to multi-band, narrow to broadband, non-tunable to tunable, and
so on). The basic absorption principle of the current popular and excellent metamaterial graphene
absorber is provided, as is the theoretical explanation of impedance matching and how to attain critical performance metrics like tunability, as well as prospects for terahertz (THz) absorber applications. Finally, numerous innovative absorbers are shown as examples, providing new ideas for future researchers.
Pemanfaatan Agregat Plastik pada Pembuatan Bata Beton
Authors:   SMP Negeri 1 Wonosobo, Fasani Azha Zayda , Rahmasari Ferina ,   SMP Negeri 1 Wonosobo, Hastuti Tri ,   SMP Negeri 1 Wonosobo, Triastuti Triastuti ,   SMP Negeri 1 Wonosobo
Published: November 2022

The increased demand for red bricks or concrete bricks has resulted from the increase in house construction. Meanwhile, raw materials for making red bricks are becoming limited. As a result, alternative materials are required in the production of concrete bricks. On the other hand, even more plastic disposed of in landfills and cannot be recycled. As a consequence, the use of plastic waste is assumed to be a solution to the problem of plastic waste including the availability of raw materials for making concrete bricks. This research used artificial aggregate of plastic recycle (LDPE) which derived from cap bottle or plastic bag. The purpose of this research is to know the influence of plastic aggregate utilizing on the brick. The testing were compressive strength, density and permeability as SNI 03-0349-1989 about brick. The bricks in the research used plastic aggregated which the maximum diameter was 4 mm.Â The percentages of plastic aggregate are between 5% until 25% as replacement of sand. The results show 50 kg/cmÂ² of the maximum compressive strength, 1667 gr/cm3 for density and 10% for water absorption. Based on SNI 03-0349-1989, the brick in this research was the brick with class III.
Comparison of What If, Fast Track and Crash Program Methods for Acceleration of Project Delay
Authors:   Universitas Brawijaya, Prawirawati Ratih , Suharyanto Agus ,   Universitas Brawijaya, Pujiraharjo Alwafi ,   Universitas Brawijaya
Published: November 2022

One of the obstacles that often arises in working on a project is project delay. Delays are usually caused by unplanned obstacles Â or problems. Delays cause the project implementation duration is not as planned in employment contract. What If, Fast Track, and Crash Program methods can all reduce project delays. The costs incurred by the Fast Track method and the What If method were less than the realization costs, while the Crash program method is greater than the realization costs, but the costs of all these methods are greater than the planning costs.The combination of Fast Track Crash Program methods and the combination of Fast Track What If methodsboth can restore the initial duration of the project.If the methodsare reversed into combinations of the Crash Program Fast Track methods and What If Fast Track methods, the produced results aredifferent, namely unable to restore the initial duration of the project. The costs incurred from these combinations are both less than the realization costs, but still higher than the planning costs.
Efectos de amitraz más Parapoxvirus ovis sobre EGF, VEGF, IGF-1 e IGF-2 en la demodicosis generalizada canina
Authors: Yarim Gul Fatma , Pekmezci Didem , Yarim Murat , Bekir Yagci Bugrahan , Gokceoglu Ayris , Sozmen Mahmut , Zafer Pekmezci Gokmen , Karaca Efe , Guzel Murat
Published: November 2022

Objective. The purpose of the study is to investigate the effect of treatment with amitraz plus-Parapoxvirus ovis (IPPVO) on serum concentrations and skin expressions of insulin-like growth factor (IGF)-1 and -2, epidermal growth factor (EGF), vascular endothelial growth factor (VEGF), in dogs suffering from generalised demodicosis (GD). Materials and Methods. Generalised demodicosis affected dogs were injected 1 ml IPPVO on days 0, 2 and 9 subcutaneously in addition to amitraz (0.025 %) treatment twice weekly for 80 days. IGF-1, IGF-2, EGF and VEGF concentrations in blood serum were measured by canine-specific enzyme-linked immunosorbent assay kit.  EGF, VEGF, IGF-1, and IGF-2 expressions in skin biopsy specimens were examined immunohistochemically. Results. After the treatment of the dogs with amitraz plus-IPPVO in GD, we demonstrated a significant reduction in both circulating concentrations and skin expressions of EGF, VEGF, IGF-1, and IGF-2, which have a role in preserving skin integrity and wound healing. Conclusions. Results of this study suggest that IGF-1, IGF-2 EGF, and VEGF have a crucial role in the progression of GD in dogs. It is believed that the findings from this study will contribute to the development of new strategies for the treatment of GD, which is an important health problem for dogs.
Supervision of Extracurricular Activities and Development of Soft Skills among Students in Selected Public Secondary Schools in Lushoto District, Tanzania
Authors: Mohamed Husna , Osaki Kalafunja
Published: November 2022

Soft-skill development is increasingly gaining importance in secondary education, and extra-curricular activities are an important component of the curriculum to develop them. The purpose of this study was to investigate the state and effectiveness of extracurricular activities (ECAs) in fostering the development of soft skills among students in a selected public secondary school in the Lushoto district of Tanzania. The study had two objectives, namely, to identify types of existing extracurricular activities in selected public secondary schools and to verify the availability of extracurricular activities’ facilities and infrastructure that would enhance the development of soft skills among students in the district. This study employed a mixed-methods research approach and a convergent design. We sampled a total of 298 respondents, including 276 students, 15 extracurricular activities teachers, 5 heads of school, and 2 ward education officers. The research tools included questionnaires, an interview guide, a focus group discussion, and an observation guide. The data was analysed through descriptive and thematic analysis. The findings revealed that the kinds of extracurricular activities practiced in visited secondary schools can be grouped into four categories, namely: sports and games; academic; production-related activities, including beekeeping and gardening; and social clubs. It was revealed that facilities and infrastructure for these activities were very limited. The study concluded that the kinds of extracurricular activities offered in the secondary schools in the district are inadequate for students, which leads them to complete secondary education without adequate soft skills for them to start an independent life. This leads them to fail to seize opportunities around them with the current high unemployment rate and turn to criminal behaviour. Extracurricular activities such as sports and games, debating clubs, farming activities, and subject clubs are important aspects in the development of a student and should be a priority for practice in public secondary schools nationwide. The implications of the findings for future curriculum reviews and school supervision are discussed.
Exclusión, excepción y violencia hacia los migrantes centroamericanos
Authors: Morales Vargas María José , Pastén Palma Claudio Aquiles
Published: November 2022

Violence, exclusion, and exception faced by migrants when crossing the Mexican border are analyzed from critical theory and a regional perspective. Following Michael Foucault’s pathway and his core concept biopolitics, contemporary theoreticians are chosen from the critical current to analyze extreme daily violence undocumented subjects suffer during their journey. This journey starts in their home countries, continuing through Mexico, the country of transit. It is argued that a migrant’s body appears as the “nuda vida” (naked life) of a mere body or man who can be killed in exception zones, with nobody being punished for it.
Node Localization in Wireless Sensor Networks using Dynamic Genetic Algorithm
Authors: Rout Saroja Kumar , Mohapatra Pradyumna Kumar , Rath Amiya Kumar , Sahu Bibhuprasad
Published: November 2022

A wireless sensor network is a collection of nodes organized in a cooperative environment. Node localization plays a vital role in many applications. Conventional location detection techniques such as global positioning system (GPS) and infrared are expensive to find the location node. This paper proposes the use of a genetic algorithm (GA) to learn the environment impairments within a wireless sensor network with the purpose of localization for data management. Hence, in this paper, we have presented an efficient and dynamic Genetic algorithm with help of receiving signal strength indicator (RSSI) which gives the optimal node location value with minimal localization error. Our simulation modeled in MATLAB 7.0 shows that the dynamic GA can achieve acceptable node location detection with the aid of three anchors. The simulation results represent th
Physico-Mechanical Properties Polypropylene/Ethylene-Propylene Diene Monomer (PP/EPDM) Binary Blends
Authors: Lai Josephine , Ramash Kunashiny , Ratnam Chantara Thevy , Baini Rubiyah , Abdul Samat Nur Amalina Shairah , Sar-ee S.
Published: November 2022

This study was to develop a radiation sterilized polypropylene/ethylene-propylene diene monomer (PP/EPDM) binary blends using melt blending and the mechanical properties of the blends were studied. The PP/EPDM binary blends were prepared in the ratios of 80:20, 60:40, 50:50, 40:60 and 20:80. The binary blends were then compressed for 12 minutes using the Hot and Cold Press machine and were cut into 1mm, 3mm and 6mm thickness for tensile test, impact test, hardness test and Fourier Transform Infrared Spectroscopy analysis. The results showed that higher EPDM content binary blends were more elastic and had better energy absorption compared to lower EPDM ratio binary blends. With the introduction of 100kGy radiation dose, the binary blends performed better in Young modulus with crosslinking formed within the molecules. Among the PP/EPDM binary blends, 20:80 PP/EPDM blends performed the best in both physical and mechanical properties. This binary blend was suitable for medical devices.
Health Index for Power Transformer Condition Assessment: A Comparison of Three Different Techniques.
Authors: Zaldivar Diego Armando , Romero Andres Arturo
Published: November 2022

In practice, the condition state of Power Transformers (PT) is quantified by using Health Index (HI). This paperanalyzes and compares three different state-of-the-art algorithms to compute HI. The first one uses a Weighted SumModel (WSM), the second is based on a Fuzzy Inference System (FIS), and the third combines both techniques, i.e.,WSM and FIS. These three approaches are tested in a PT fleet composed of 30 units. Results show that eachapproach produces different HI values for the same PTs. Therefore, decision making regarding the PT fleet willdepend on the selected approach for HI calculation. This work proposes merging the knowledge involved in eachanalyzed approach by using a K-means clustering technique to overcome this drawback. This solution could help theasset manager to make adequate decisions regarding the maintenance scheduling of PT when there is uncertaintyabout the appropriate approach to be selected.
Pengaruh audit tenure, reputasi auditor, komite audit dan fee audit terhadap kualitas audit (studi empiris pada perusahaan yang terdaftar di indeks Kompas100 pada BEI Tahun 2012-2016)
Authors: Rizaldi Sendy , Rahayu Sri , Tiswiyanti Wiwik
Published: November 2022

This study examines the influence of audit tenure, auditors' reputation, audit committees, and audit fees on audit quality. Audit quality uses current proxy accruals; while the term is measured by counting the year in which the same auditors have made an engagement with the auditee, the reputation of the auditor is measured by a dummy variable using the big four and non-big four groups of auditors, the audit committee is measured by the percentage amount of the audit committee comparing to the number of commissioners and audit fee measured by professional fees account on the financial statement. The population in this study consists of listed go public firm KOMPAS100 index on Indonesia Stock Exchange in the year 2012-2016. The sampling method used is purposive sampling. The sample's total is 135 from 27 firms over five years of research in this research—multiple regression analysis used to be the analysis technique. The empirical result of this study shows that audit tenure and reputation of the auditor had not significantly influenced audit quality. Meanwhile, the audit committee and audit fee variable positively affect the audit quality.
Analyzing Eight Emerging Topics and Their Importance to Career Success
Authors: Harrast Steven A. , Olsen Lori , Sun Yan
Published: November 2022

The inclusion of eight emerging topics on future Certified Public Accounting (CPA) exams challenges educators to prioritize these topics in the accounting curriculum. We analyze the emerging topics and discuss their importance and appropriate teaching locus in light of survey evidence collected from professionals. The results support the preeminence of data analytics above other emerging accounting topics and show the relative importance of other topics based on their statistically significant differences. The results are helpful as educators make decisions about where to teach particular topics as well as their relative emphasis. To augment the analysis, we also examine factors that influence professionals’ judgement of the importance of data analytics to career success and find a positive relationship between years of experience and data analytics importance.
Harnessing Data and Embracing Digital Strategy at Zalora
Authors: Perdana Arif , Wang Tawei
Published: November 2022

This case analyzes how Zalora has applied various strategies to gain a sustainable advantage in the e-commerce industry and provide solutions that continuously add value for its customers, even during the COVID-19 pandemic. It describes the company’s efforts to capitalize on customer demand and external and internal forces to be more agile and nimble in an increasingly competitive environment. Zalora has introduced several technologies that reflect its digitization, digitalization, and digital transformation efforts. The use of digital technologies has helped Zalora to capture and analyze relevant data from its business processes and customer interactions. The information and automation generated by the technologies have enabled Zalora to continuously improve and reinvent itself to stay ahead of the competition. The challenges and opportunities of digital transformation are also discussed.
A declaração de Brighton
Authors:   Rio Ave F C, Ribeiro Basil
Published: November 2022

Em Brighton, Reino Unido, entre 5 e 8 de maio de 1994, reuniram-se políticos e outros especialistas, nacionais e internacionais, sobre a temática da participação da mulher no desporto, organizado pelo British Sports Council e apoiado pelo Comité Olímpico Internacional. Pretendia-se discutir o modo de acelerar a participação e envolvimento da mulher no desporto. De 82 países estiveram presentes 280 delegados pertencentes a organizações governamentais e não governamentais, a comités olímpicos nacionais, federações desportivas nacionais e internacionais e outras instituições ligadas à investigação. Desta reunião saiu a Declaração de Brighton portadora dos princípios orientadores da maior participação feminina no desporto, a todos os níveis e funções...
Saúde Mental no Desporto de Alta Competição
Authors:   Clínica Espregueira – FIFA Medical Centre of Excellence, Porto, Gomes Eluana , Andrade Renato , Valente Cristina , Espregueira-Mendes João ,   Clínica Espregueira – FIFA Medical Centre of Excellence, Porto
Published: November 2022

The impact of mental illness on the sport performance of athletes is increasingly recognized by the clinic and scientific community. The demand of elite sport influences the mental health of this population and increases the risk of mental illness. This article aims to briefly discuss the most relevant points about mental illness in athletes, as well as highlights the gaps in the literature, and indicates future directions for research and intervention in this area. Despite the existing advances on this topic, it is extremely important to promote the dissemination of scientific knowledge and actions of mental health, and to improve general quality of life of the athletes.
Reportagem do XV Congresso Nacional da SPAT
Authors:   Rio Ave F C, Ribeiro Basil
Published: November 2022

.... Os três Presentes do Congresso, os Drs. Vítor Coelho, Luís Amaral e Pedro Dantas (figura 2), criaram as condições para o sucesso do congresso e, em associação com a direção da SPAT, de modo mais particular com o seu Presidente, O Dr. Manuel Vieira da Silva, elaboraram um programa científico de elevada qualidade, onde palestrantes nacionais e estrangeiros abordaram as patologias, os diagnósticos e os tratamentos de todas as articulações do corpo. Muitos tratamentos foram referidos, mas o tratamento (e diagnóstico) por via artroscópica revelou-se algo de extraordinário no tratamento do atleta e do cidadão comum. Foi surpreendente (ou talvez não) ouvir as palestras de jovens médicos, onde a experiência e a casuísticas próprias deslumbraram os participantes e os médicos mais seniores validaram....
FORMAÇÃO DE PROFESSORAS E PROFESSORES DE CIÊNCIAS DA NATUREZA E AS QUESTÕES DE GÊNERO E SEXUALIDADE
Authors: Cordeiro Thamires Luana , Gonçalves dos Santos Eliane
Published: November 2022

A pesquisa buscou analisar as concepções de licenciandos e licenciandas de três cursos voltados a formação de professores e professoras da área de Ciências da Natureza, referentes aos termos Gênero e Sexualidade. Visto que a mídia, a sociedade e os discursos conservadores reforçam e contribuírem para a construção de visões tendenciosas referentes a estas temáticas. Para o desenvolvimento desta pesquisa foi utilizado um questionário e para a exploração dos dados utilizou-se a Análise de Conteúdo, da qual emergiram três categorias. Os resultados demonstram que estudantes de licenciatura apresentam entendimentos equivocados sobre as terminologias Gênero, Sexualidade e Orientação sexual e sinalizam que a Universidade aborda pouco essas temáticas, ao mesmo tempo, reconhecem a importância de se trabalhar com essas questões nos espaços escolares. Por fim, a pesquisa aponta que são necessários maiores aprofundamentos acerca da temática Gênero e Sexualidade na formação de professores e professoras, haja vista que essas questões fazem parte do cotidiano e estão presentes na vida das educandas e dos educandos.
COMMUNITY BASED ECOTOURISM: PARTISIPASI POKDARWIS DALAM MENGEMBANGKAN OBJEK WISATA PANTAI PELAWAN KABUPATEN KARIMUN
Authors: Zulaika Maleny , Trisakti Febby Amelia
Published: November 2022

Pembangunan destinasi pariwisata yang berkualitas, berkelanjutan dan berbasis masyarakat penting dilakukan untuk memberikan manfaat yang besar bagi masyarakat. Salah satu Destinasi Pariwisata Unggulan Daerah Provinsi Kepri yaitu kawasan wisata Pantai Pelawan di Kabupaten Karimun. Penelitian ini bertujuan untuk mengetahui peran pokdarwis dalam mengembangkan wisata pantai pelawan melalui konsep community based ecotourism. Dalam penelitian ini menggunakan pendekatan teori komunikasi partisipatif dari Tufte dan Mefalopulos. Penelitian juga menggunakan model community based ecotourism yang diimplementasikan oleh pokdarwis pelawan bestari dalam mengembangkan wisata pantai pelawan. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan teknik pengumpulan data observasi, wawancara, dan dokumentasi. Hasil penelitian menujukkan peran pokdarwis dalam mengembangkan wisata pantai pelawan cukup optimal, dengan melibatkan masyarakat lokal melalui kegiatan pariwisata. Pengembangan wisata pantai pelawan berupa tersedianya homestay, perbaikan dan pembangunan infrastruktur yang lebih memadai, dan pengembangan UMKM. Manfaat yang dirasakan oleh masyarakat berupa adanya peningkatan perekonomian, mendapatkan pengetahuan baru dan menghasilkan produk wisata yang bernilai.
Morfologia urbana, paisagem e "Genius Loci"
Authors: Inoue Luciana Massami
Published: November 2022

Este artigo trata da relação entre morfologia urbana, paisagem e “genius loci”. Os dois últimos conceitos vêm sendo bastante empregados nas questões referentes à preservação do patrimônio. Já o primeiro, de morfologia urbana, possui váriasaplicações, sendo uma delas na preservação, principalmenteno que se refere à análise dos lugares, dos diversos tecidos urbanos que compõem a cidade e do local onde são detectadas permanências. Estas, por sua vez, são observáveis no parcelamento dos lotes ou na volumetria das edificações, além de em outras manifestações. A morfologia urbana, noentanto, possui várias linhas investigativas, sobre as quais este artigo discorre; além disso, aborda-se como elas dialogam, ou não, entre si e se podem ser compatibilizadas com os conceitos de paisagem e de “genius loci”. Esta análise é feita sem que se perca de vista a aplicabilidade dos conceitos nas questões relativas à preservação do patrimônio urbano.
Forma Urbana de áreas centrais no século XXI
Authors: Mendonça Eneida Maria Souza , Pegoretti Michela Sagrillo
Published: November 2022

Este artigo visa refletir sobre possibilidades da forma urbana para o século XXI, como contribuição aosestudos sobre áreas centrais, tendo  como objeto de exame, o Centro da cidade de Vitória, capital do Espírito Santo. A revisão bibliográfica considerou abordagens de autores contemporâneos e clássicos sobre áreas centrais, expectativas urbanísticas para o século XXI, métodos para o estudo da forma urbana e história da área em questão. A partir dessa base, foram analisados projetos urbanos e planos propostos para o Centro de Vitória no século XXI, à luz de sua problemática atual. O estudo demonstrou por um lado, complementaridade e ausência de contradições entre as proposições, a despeito de não ter havidoarticulação intencional neste sentido, e por outro, baixa efetividade de execução destas pelo poder público e consequente desatenção deste, sobre a importância da permanência de formas urbanas remotas e respectivas apropriações pela população.A conclusão aponta para o potencial dos estudos sobre a forma urbana, na perspectiva de enfrentamento dos desafios ambientais e urbanísticos do século XXI, considerando a valorização das diversas camadas históricas intrínsecas às áreas centrais, em articulação às questões sociais contemporâneas.
Polyamide/Polyethylene/Carbon Fibre Polymer Nanocomposites
Authors: Alexandrescu Laurentia , Georgescu Mihai , Sönmez Maria , Ficai Anton , Trusca Roxana , Ardelean Ioana Lavinia
Published: November 2022

Polyamide and polyethylene are well known as engineering thermoplastic materials that are widely used in industrial applications for their good mechanical and thermal properties. The paper presents the study of the new nanostructured polymer composites based on polyamide/ compatibilizers/polyethylene/carbon fibres nanoparticles-PA/PE-g-MA/PE/CF in order to obtain, by injection, centre pivot liner, centre plates, and other components for the railway industry, with impact resistance higher than 5-8 kJ/m², abrasion resistance below 100 mm3, resistance to temperatures of -40 - 240°C, resistance to impact and to outdoor applications, with temperatures ranging from -40 to +60°C, in rain, snow or sunshine. The influence of carbon fibres nanoparticles (CF) on the rheological and physico-mechanical properties of the polyamide was studied. The nanocomposites based on polyamide/ compatibilizers/ polyethylene/carbon fibres nanoparticles were characterized by scanning electron microscopy (SEM) and Fourier transformation infrared spectrum (FT-IR) and in terms of physico-mechanical properties. The studied nanocomposites have higher values compared to the blank samples, and the requirements of the railway of impact strength of 5 KJ/m2. Carbon fiber concentrations greater than 1.5% result in decreases in impact strength values, similar to traction resistance values, but not lower than standard values. This leads to the conclusion that the percentages of carbon fibers in the range of 0.1-1.5% achieve maximum values of physical-mechanical parameters.
Determination of Essential Oil Components Obtained from Leaves and Aerial Parts of Ferulago syriaca
Authors: Kaya Durmuş Alpaslan , Güzel Yelda , Türkmen Musa
Published: November 2022

In this study, the contents of essential oils obtained from the leaves and aerial parts of Ferulago syriaca were investigated by GC-MS. Ferulago syriaca used in the study was obtained from Hatay flora. 57 components of the essential oils obtained from the leaves of the plant were determined at a rate of 99.99%. When the essential oil components obtained from the aerial-parts were examined, 43 components were determined at a rate of 98.47%. When the essential oil components obtained from Ferulago syriaca leaves and aerial parts were examined, the main components were determined as Myrcene, durylaldehyde, α-pinene, β-phellandrene, α-terpinolene, limonene, bornyl acetate, p-cymene in both parts of the plant.
Comparison of Two Different Etch Systems as Adhesion Resistance in Dental Adhesive Systems
Authors: Öztoprak Ece , Öztoprak Kaan
Published: November 2022

Adhesive systems are used in many specialties in dentistry. These systems provide chemical attachment of prosthetic and restorative materials to the tooth surface. The first stage of adhesive systems is the etching process. In the commonly used Total etch systems, acid agent is applied to the tooth first to create roughness on the tooth surface, then the applied bond agent enters this rough surface to ensure retention. The acid agent used is 37% phosphoric acid gel. Normally, phosphoric acid is liquid. It should be applied in gel form in order to be applied in a controlled manner to a certain surface of the tooth and to remain on the desired surface for a long time. Commercially used phosphoric acid gels are produced by a single method and contain the carbomer chemical. Another way to produce gel is silicium dioxide. Acid gels produced with carbomer have a glossy appearance, while acids produced with Silicium have a matte appearance. In this study, we aimed to see the difference in retention of the phosphoric acid gel produced with silicium dioxide compared to the carbomeric acid gel. In this study, we prepared phosphoric acid gel with silicium dioxide and phosphoric acid with carbomer. In our study, 50 extracted caries-free human teeth were used. Orthodontic buttons were attached to the buccal surfaces of the teeth in 2 groups. Phosphoric acid gel prepared with Carbomer was applied for 40 seconds on 25 teeth and phosphoric acid gel prepared with silicium dioxide for 40 seconds on 25 teeth. Afterwards, the teeth were washed with water for 10 seconds and dried, and the orthodontic buttons were adhered with blue light for 40 seconds with Tokuyama bond and flowable composite, and a tensile test was applied to them. There was a statistically significant difference between the tensile force resistance of the buttons attached with two different methods. The teeth in which the gel prepared with silicium dioxide was used showed an average of 6% more resistance to tensile force than the other group. In this study, adhesion strength was measured for the first time by changing the gel base material in acid. We recommend this preparation of acids in adhesive systems, and we believe it can be beneficial for all dentists.
Hair Masks Based on Keratin and Collagen
Authors: Albu-Kaya Mădălina Georgiana , Ghica Mihaela-Violeta , Dinu-Pîrvu Cristina-Elena , Popa Lăcrămioara , Dănilă Elena , Chelaru Ciprian , Anuța Valentina , Kaya Durmuș Alpaslan , Talianu Marina-Theodora , Stavri Ana-Maria
Published: November 2022

The study aimed to develop and characterize some O/W emulsions, designed as nourishing hair masks. The cosmetic formulations based on collagen hydrolysate, keratin, and natural ingredients (essential and vegetable oils) were organoleptically evaluated. The pH, morphological, superficial, and rheological properties were assessed as a physicochemical background. The rheological measurements were performed at 23 and 32°C, and the shear stress versus shear rate ascending and descending rheograms were built, together with the flow profiles of viscosity as a function of shear rate. The cosmetic emulsions were stable at temperature variation and the pH values were considered physiologically acceptable for the skin, indicating that formulations can be safely applied for cosmetic purposes. Results from the optical microscopy analysis showed that all emulsions presented a creamy and non-greasy appearance. The superficial profiles, quantified through contact angle at solid/liquid interface, were specific for hydrophilic formulations. The emulsions showed pseudoplastic and thixotropic behavior, facilitating the formulations’ flow and the topical application. The Power law model was used to quantify the flow properties, and the thixotropic analysis was conducted using particular descriptors, namely thixotropic area, and thixotropic index. The designed emulsions presented appropriate physicochemical properties for cosmetic applications in hair care.
The Development of a Small-Scale PPG-UAV for Emergency Response Actions
Authors: Salistean Adrian , Toma Doina , Jomir Mihaela , Badea Ionela
Published: November 2022

In this paper is shown the development processes of an Unmanned Aerial Vehicle (UAV) that can be used for remote sensing, logistics or other emergency actions. The UAV is an ultralight aerial unit with an adaptable mission configuration. Thus, the configuration can be tailored to the type of intervention: observation, logistics, detection of certain personnel that are using Personnel Protective Equipment (PPE) equipped with radio ID transponders etc. The UAV is in fact a scaled down Powered Paraglider (PPG). The PPG-UAV uses a textile wing manufactured from a low weight double rip-stop nylon 6.6 fabric with extra coatings for air permeability reduction and added UV protection. The paraglider is linked with an Automated Command and Control (ATC) unit designed with increased modularity in mind allowing rapid reconfiguration based on the nature of the intervention. In this paper we summarize the fabric development followed by the paraglider pre-dimensioning, simulation using a numerical experimental model. The process is conducted on computer software developed within our institute. After the design phase the virtual prototype is preloaded for CNC cutting of the wing patterns, prototype assembly. The prototype is validated using computational algorithms combined with live testing in either static tests and/or simulated emergency live situations.
Activity of Oleic Acid on Biofilm Formation of S. aureus
Authors: Yaprak Elif , Duran Nizami
Published: November 2022

Oleic acid is a naturally occurring fatty acid in animal and vegetable oils and has been shown to have a wide variety of pharmacological effects. It aimed to investigate the efficacy of oleic acid on the adhesion and invasion of S. aureus to the host cell and biofilm production. The standard S. aureus strain (ATCC 25923) was used in the experiments. Cytotoxicity tests of oleic acid were performed in the Vero cell line. Bacterial adhesion and invasion rates and activities on slime formation in cells treated with oleic acid were evaluated compared to the control group. Slime formation tests were evaluated phenotypically on Congo red agar. In the study, it was determined that oleic acid was effective in both cellular adhesion and invasion in terms of colony number in cell cultures treated with 0.156 µg/ml concentration of oleic acid. In addition, it was determined that slime production was significantly inhibited in bacterial cultures treated with oleic acid. Oleic acid prevents cells from attaching to bacteria and has an inhibitory effect on the virulence of bacteria. This activity of oleic acid may be due to its modulatory effect on cellular processes, and its bacterial virulence may be related to its effect on bacterial metabolism.
Effect of Enzymatic Bating on Wet Blue Leather Properties
Authors: Biškauskaitė Renata , Valeika Virgilijus
Published: November 2022

The use of enzymes in leather processes has increased in recent years. Enzymes have gained more recognition because of their properties, such as specific activity, simple application, mild enzymatic reaction conditions, and non-polluting effluent generations. However, not all enzymatic operations are well investigated, and there is still a lack of knowledge on ferment usage in post-tanning processes. The aim of this study was to investigate the enzyme implementation in wet blue bating and its effect on semi-finished product. The various enzyme preparations were used for bating at different concentrations and process times. The amount of removed collagen proteins, the shrinkage temperature after bating and rechroming were assessed; on top of that, the amount of chrome compounds in semi-finished product and in the effluent was determined. The results showed that enzymatic bating had an effect on wet blue leather. The greatest difference was obtained using Zime SB enzyme preparation. The results obtained during the study are promising, even so, further research on mechanical properties, dying, and fatliquoring effects needs to be investigated to see enzymatic effect on the finished product.
Behaviour of Nitrile Rubber-Based Mixtures to Composting Tests
Authors: Stelescu Maria Daniela , Nituica (Vilsan) Mihaela , Georgescu Mihai , Gurău Dana , Alexandrescu Laurenția , Sönmez Maria
Published: November 2022

The paper presents the behavior of some samples based on nitrile rubber reinforced with inorganic and organic type of filler, respectively, to composting. The organic filler used was obtained as waste in the leather and footwear industry. Before use, the waste was ground and then functionalized with potassium oleate in order to improve compatibility with the polymer matrix. The samples of rubber mixtures were obtained on a Brabender mixer, the vulcanization agents were added on a laboratory roller, and the vulcanization of the samples was performed in a hydraulic laboratory press, at 165°C, with a pressing force of 300 kN. The aerobic composting test was performed at laboratory scale, using solid, standardized and homogeneous synthetic waste. After a thermophilic incubation period of 42 days (at 58°C), followed by a period of mesophilic incubation (at the room temperature) of 42 of days, a decrease of some physico-mechanical properties was noticed (hardness, 100% modulus, tensile strength), of the gel fraction, and of the crosslinking densities, the largest decrease of these characteristics being observed in the sample with the highest content of organic filler. The results obtained may indicate that the biodegradation of the rubber samples is favored by the organic fillers.
Decorative Plates from Epoxydic Composites
Authors: Chelaru Ciprian , Ignat Mădălina , Constantinescu Rodica Roxana , Ciobanu Ana-Maria , Drușan Denis , Burghelea Virginia
Published: November 2022

Leather waste obtained in the leather industry represents a potential source of pollution for the environment, for plants and animals. The ecological treatment of this waste involves quite high costs and only companies with large production capacities can afford them. This paper proposes a method of transforming this waste into ash rich in chromium III and using it as a pigment (green), together with other substances, to obtain new materials. In this sense, it is proposed to use compounds that can incorporate and block the diffusion of the substances back into the environment. To achieve this, a mixture of epoxy polymers, biphenol A and biphenol F, will be used, in a 1:1 ratio, which after the polymerization reaction, with Ancamine 2686, will result in an inert mass. The polymer tiles can then be used as decorative elements for the facades of some buildings.
Materials for Surface Design and Finishing for Contemporary Footwear – Part 2
Authors: Niculescu Olga , Badea Elena , Quaratesi Ilaria , Constantinescu Rodica Roxana , Gurau Dana
Published: November 2022

Leather has a natural beauty that, unlike many materials, improves with age, and has long been a component of luxury goods such as footwear, leather goods and clothing. It is a natural and durable material, unmatched by any synthetic product, in terms of hygienic and protective properties. Thanks to the skills of leather producers, who take the same basic raw material, natural leathers are processed through different technological processes and transformed into finished leathers for various clothing items with high-performance properties. Finishing is achieved through a series of technologies, using materials that provide the finished leather with the desired aesthetic characteristics related to fashion, colors and special effects (pearl, two-tone, antique, printed, glossy, matte, waxed, etc.). Hand-painted natural leather shoes are also in fashion, to give a personal touch to a luxury item. The work presents surface finishing technologies of ecological natural leathers (tanned without metals), using pigment pastes with a metallic effect, in combination with acrylic and polyurethane polymers, with resistance to light and aging. White and pastel finished leathers with silver and gold effect can be used in creative industries for artistic and luxury footwear (especially for women).
Smart Textiles Digitalization Using Creative Methods
Authors: Aileni Raluca Maria , Stroe Cristina
Published: November 2022

This paper presents several aspects concerning the digitalization implementation using creative learning and teaching methods in the Erasmus+ DigiTEX project framework. The DigiTex project developed an e-learning platform for the course and end-users management. The students and teachers accessed the platform after enrolling, which allows an association of the end-users with the universities. The database associated with the e-learning platform contains information about students, teachers, course categories and contains. In the framework of the DigiTEX Erasmus+ project, the e-learning platform Moodle DigiTEX was used during the Intensive Study Program in Athens, Greece (2022) and will be used in multiplier events by all partners.
Opportunity and the Pandemic: Re-imagining Business Management Curriculum for First-generation Students under Cover of Pandemonium
Authors: Engelbrecht Doug
Published: November 2022

First-generation university students negotiate with clear and evident difficulty the transition from the familiarity of secondary (high school) education to tertiary (university) education. The impersonal nature of tertiary education generally—and particularly so since the pandemic advent—accentuates marginalisation of vulnerable youth and impinges on effective learning and a favourable learning experience. A more desirable state would include demystification of the processes of becoming a student-customer, firstly, and thereafter a learner-initiate. Teaching faculty, in the (necessarily virtual) classroom, serve as the user-interface with the impersonal and often impenetrable administrative and teaching dimensions of the university exosystem. The rationale is that, were the pathway from high school graduate to student-customer and learner-initiate to be less harrowing, the transition would be more composed and the journey to degree completion more gratifying. Scaffolding this rationale as a reconceptualised first-year management studies curriculum draws upon Bronfenbrenner’s bioecological model of learner development, and the foundations established by Vygotsky’s socio-cultural model of learning. In this frame, proximal processes arising as learner interaction with microsystem and exosystem dimensions of socio-economic and socio-cultural inheritance, can be addressed in the classroom to transcend learner disaffection. An entry-level management principles curriculum delivered to a substantial cohort in the second semester of 2021 served as object of phenomenological observation and interpretation. The student-experience pathway was emphasised as instructor-directed, student-focused and compensatory. Two foci are brought to the fore in this paper, rendering the curriculum content accessible for the student profile, and overcoming assessment helplessness and despondency. These accomplishments are elaborated as features of backwards design and emphasis on teaching and learning as social interaction with a more knowledgeable other.