bluuebunny/crossref_metadata_2025 huggingface dataset:
Fractional order modelling and robust multi-model intelligent controllers’ synthesis for ACP1000 nuclear power plant
Authors:   Maintenance and Technical Training Division, Pakistan Atomic Energy Commission, Chashma Punjab Pakistan, Malik Arshad Habib , Memon Aftab Ahmed ,   Department of Telecommunication Engineering, Mehran University of Engineering and Technology, Jamshoro Sindh Pakistan. Computer Development Division, Pakistan Atomic Energy Commission, Karachi Sindh Pakistan, Arshad Feroza ,   Computer Development Division, Pakistan Atomic Energy Commission, Karachi Sindh Pakistan
Published: July 2022

In this research work, a third generation Pressurized Water Reactor (PWR) type Nuclear Power Plant (NPP) of 1100 MWe rating called Advanced Chinese PWR (ACP1000) NPP is adopted. The research and development work is mainly encompassed of addition of third steam generator loop, hybrid programming platforms, fractional order modular modelling and intelligent controllers. The ACP1000 NPP is comprised of primary loop, secondary loop and balance of plant (BOP). The ACP1000 nonlinear dynamics is precisely modelled with greater efficiency using fractional order differential equations. The entire plant is modelled into eighteen modules in a fractional order framework in Visual Basic (VB) environment. The eighteen modules are governed by nine controllers. Controllers are configured in a fashion of an adaptive neuro-fuzzy inference system (ANFIS). An innovative multi input single output (MISO) ANFIS virtual instrument (VI) is designed for training and configuring controllers in LabVIEW. The developed MISO ANFIS VI in combination is implemented for multi-input multi output (MIMO) ANFIS controllers in parallel computing framework. The variable transfer between fractional order multi- modular framework in VB (FO- MMF-VB) and robust intelligent ANFIS controllers in LabVIEW (RI-ANFIS-LV) is established in client server configuration and system exec VI for calling external code in VB. This hybrid programming framework of Visual Basic and LabVIEW is actually a development of LabVIEW Visual Basic Integration (LabVb) Toolkit used to evaluate the closed loop transient performance of ACP1000 nuclear power plant. Various parameters are simulated for dynamic transient simulations under load manoeuvring from 100% power to 50% power. The results are analysed and validated against benchmark design data and Preliminary Safety Analysis Report (PSAR). All the results are within the protection systems design limits under normal operating conditions.
Impact of Internet and Search Engines on Students’ Understanding of Consumer Behaviour and Choices In Tertiary Institutions of Learning In Abuja, Nigeria.
Authors:   Department of Marketing Baze University, FCT, Abuja, Nigeria, Shu'ara Jamila , Hindu Jibril Amin,
Published: July 2022

Understanding consumer behaviour and choices are crucial for marketing students in tertiary institutions of learning. Thus, the paper examined the impact of the internet and search engines on students' understanding of consumer behaviour and choices in tertiary institutions of learning in Abuja. Three research objectives and three research questions guided the study. The study adopted a descriptive survey research design. The population comprised 1,126 students that were drawn from three tertiary institutions in the FCT. A sample of 291 students was used for the study, using Krejae, and Morgan's (1970) sample size determination table. Sixteen items self-structured questionnaire was used as the instrument for data collection. Content validity was used. Test-retest method of reliability was used to obtain the internal consistency. The reliability index was obtained through Cornbrash's alpha (0.86). 274 questionnaires were returned valid, representing a 94% success rate. Data collected were imputed into the SPSS (25) software package where descriptive statistics, in the form of graphs and tables were generated. The study discovered among others that Google is the most used search engine by students in tertiary institutions of learning in the Federal Capital Territory. Internet search engines have positive impacts on students' understanding of consumer behaviour and choices in tertiary institutions of learning in Abuja. The study recommended among others that Faculty and Departmental lecturers should educate students on how to identify junk information while surfing through the search engines, students should attend special ICT training programmes to improve their internet search skills and the cost of internet subscription should be made affordable for students and other subscribers. . Keywords: Impact, Internet, search engines, consumer behaviour and choices
Control of mathematical modeling process of dynamics of harmful substances concentrations on the basis of ontological approach
Authors:   Department of Computer Science, West Ukrainian National University, Dyvak Mykola , Melnyk Andriy ,   Department of Computer Science, West Ukrainian National University, Pukas Andriy ,   Department of Computer Science, West Ukrainian National University, Dostalek Libor ,   Department of Applied Informatics, University of South Bohemia
Published: July 2022

The problem of building a mathematical model of the dynamics of nitrogen dioxide concentrations at different parts of the city is considered in the paper. The peculiarities of the construction of such models on the basis of periodic measurement of concentrations of harmful substances and identification on the basis of the measurements obtained are considered. This paper also proposes an ontological approach as a control tool that greatly simplifies the systematic standardized methods of the models storage, the process of their construction and appropriate usage in practice. The use of the ontological model allows formalizing the process of obtaining, storing and using relevant knowledge and is suitable for more intelligent systems, such as identification of obviously erroneous solutions based on the model, predictive control of the model, optimization of the decision-making process based on knowledge and modeling of an appropriate technological flow chart. This paper also describes the features of the construction of the corresponding ontological model, the pattern of choice of a nonlinear model with "switching" to different conditions. Relevant experimental studies have also been conducted to confirm the effectiveness of the proposed approach.
Scattering of plane waves by an open arc with different boundary conditions on its sides
Authors:   Lodz University of Technology, Emets Volodymyr
Published: July 2022

The paper considers an approach to numerical modelling of the problem of electromagnetic plane waves scattering by an open arc with different boundary conditions on its sides. The corresponding mixed boundary value problem is reduced to a system of two singular and hypersingular integral equations. The method of collocation for numerical solutions to the equations obtained is proposed and analyzed. Numerical results of the radar cross-section for different values of arc curvatures are presented.
Transport phenomena in copper doped cadmium telluride: calculation from the first principles
Authors:   Lviv Polytechnic National University, Malyk Orest , Petrovych Ihor ,   Lviv Polytechnic National University, Kenyo Halyna ,   Lviv Polytechnic National University
Published: July 2022

In the presented work, the method of determining the energy spectrum, the wave function of the heavy hole and the crystal potential in CdTe at an arbitrarily given temperature is considered. Using this approach within the framework of the supercell method the temperature dependences of the ionization energies of various types of defects caused by the introduction of copper impurity in cadmium telluride are calculated. Also the proposed method makes it possible to define the temperature dependence of the optical and acoustic deformation potentials, as well as the temperature dependence of the scattering parameters of heavy holes on ionized impurities, polar optical, piezooptical and piezoacoustic phonons. Within the framework of short-range scattering models, the temperature dependences of the heavy hole mobility and Hall factor are considered.
Marketing Da’wah through New Media at the "Teras Dakwah” (Da’wah Terrace) Yogyakarta, Indonesia
Authors: Saputra Eko
Published: July 2022

Da'wah today has undergone a significant shift. This article discusses the market religion-based da'wah in the Teras Dakwah in Yogyakarta. This article uses netnographic and ethnographic studies to reveal the da'wah marketing of the Teras Dakwah. The paper finds that the consequences of market religion-based da'wah lead to the fusion of religious authorities, hybrid congregations, and delocalization of religious messages, including place, region, age, culture, language, and ethnicity. Thanks to its media marketing, the Teras Dakwah can freely enter diverse segments of young people across identities. The Teras Dakwah has become a religious entrepreneur. It spreads da’wah that is accepted as pleasure for young people based on considerations of rational choice and economic theory (law of demand and offers). The Teras Dakwah provides a form of da'wah program in a market mechanism that can be enjoyed based on the tastes of young people. The role of the Teras Da’wah media is very significant in the success of the Teras Dakwah religious program. The Teras Dakwah will not successfully reach various segments of young people from cross-religious hybrid identities if it does not use new media channels.
Konsepsi Emosi Marah Dalam Perspektif Budaya di Indonesia: Sebuah Pendekatan Indigenous Psychology
Authors: Zuhdi Mochamad Sulaiman , Nuqul Fathul Lubabin
Published: July 2022

Penelitian ini bertujuan untuk mengeksplorasi konsep emosi marah dengan perspektif budaya-budaya di Indonesia. Penelitian ini secara khusus memiliki urgensi dalam membangun teori emosi marah berdasarkan konsep dasar budaya di Indonesia yang merupakan pengembangan psikologi Indonesia, dan secara praktis dapat membantu memahami konflik-konflik yang ada di Indonesia. Penelitian ini menggunakan pendekatan mix method. Data penelitian dikumpulkan menggunakan kuesioner terbuka. Responden dalam penelitian terdiri dari 254 orang yang tersebar dalam enam suku di Indonesia, yaitu suku Jawa, suku Sunda, suku Madura, suku Bugis-Makassar, suku Batak, dan suku Minang. Data dianalisis menggunakan analisis open-ended, kategorisasi tanggapan, dan tabulasi silang dengan kategori suku. Temuan penelitian menunjukkan bahwa masyarakat Indonesia mendefinisikan emosi marah dengan bentuk perilaku, penyebab emosi marah, dampak, emosi marah, instrumental, dan sabar. Istilah emosi marah dalam setiap suku memiliki istilah khas masing-masing. Pengenalan emosi marah dengan melihat perubahan ekspresi wajah, ekspresi pasif, perubahan intonasi, ekspresi verbal, dan agresif. Relasi individu penyebab emosi marah adalah teman, orang lain, keluarga, dan pasangan. Ekspresi emosi marah yang ditampilkan adalah ekspresi pasif, verbal negatif, bahasa tubuh, verbal positif, aktif fisik, dan ekspresi religius. Faktor penyebab emosi marah adalah hal tidak menyenangkan, dihina, gangguan, pelanggaran norma, kekecewaan, dan pelanggaran kepercayaan. Terakhir, regulasi emosi yang ditawarkan adalah religius coping, diam, mengalihkan, hydro therapy, menghindar, regulasi diri, mengacuhkan, menyelesaikan masalah, berganti posisi, tersenyum, berpikir positif, dan memprovokasi lawan. Berdasarkan analisis terdapat perbedaan konsep emosi marah antar suku di Indonesia. Perbedaan tersebut hanya melingkupi istilah, faktor penyebab, dan regulasi emosi marah.
Evaluation of Chemical, Physical, Microbial and Sensory Properties of Garlic Butter by Using Cow Milk
Authors: Sumithra Nayanangi Wadiwela Mudiyanselage , Pagthinathan Mylvaganam , Gunathilaka Suneth
Published: July 2022

Butter is a popular dairy product composed of mainly milk fat and other minor components such as water, vitamins, enzymes, and minerals which are beneficial for health. The study was to investigate the effect of garlic (Allium sativum) powder addition on the chemical, physical, microbial, and sensory properties of butter, incorporated with garlic at the rate of 2% garlic chips and 2% garlic powder (w/w) and 2% garlic chips and 4% garlic powder (w/w). Butter samples were analyzed for physical, chemical, microbial and sensory properties during refrigerated storage at 7 °C. The physico-chemical and sensory characteristics were analyzed during storage. Moisture, total solids, fat, free fatty acids, titratable acidity, and pH were significantly different (p<0.05) among the treatments on day one. The results of this study revealed that the moisture (14.09±0.10%) and total solids (85.91±0.10%) content were significantly (p<0.05) higher in butter without incorporating garlic chips and powder. Fat content (80±0.00%) was significantly (p<0.05) lowest in butter incorporated with 2% garlic chips and 4% garlic powder. While free fatty acids were significantly (p<0.05) highest in butter incorporated with 2% garlic chips and 4% garlic powder and lowest in butter without added garlic chips and powder. pH (6.09±0.03%) was significantly (p<0.05) lowest in butter incorporated with 2% garlic chips and 4% garlic powder. Titratable acidity (0.13±0.02%) was significantly (p<0.05) lower in butter without added garlic chips and powder 2% garlic chips and 4% garlic powder added to butter showed the highest (48.75±1.18 Mm/g) antioxidant activity. During storage, the pH value was significantly (p<0.05) decreased and titratable acidity was increasing with the storage period. The cohesiveness, gumminess and springiness were significantly (p<0.05) increased. Organoleptic characteristics revealed that 2% garlic chips and 4% garlic powder added to butter had the highest mean score of overall quality of all sensorial properties. Finally, most of the panelist accepted, that butter is made from 2% garlic chips and 4% garlic powder than other types of butter.
Effects of Fermentation and Roasting on Natural Antioxidants in Maize
Authors: Oladeji Babatunde Stephen
Published: July 2022

Natural antioxidants in foods are well appreciated for preserving foods and had been shown to have beneficial effects against oxidative stress-induced degenerative and age-related diseases, cancer, and aging. This chapter reviewed the effects of two major primary processing methods; fermentation and roasting on the antioxidant properties of maize and its products. The effect of fermentation and roasting on the chemical active compounds including carotenoids, vitamin C, phenolics, and flavonoids, and the scavenging antioxidants power of both aqueous and organic extracts of fermented and roasted maize using DPPH and ABTS assays were reported. Fermentation results in the modification of cereals' phytochemicals; caroteniods content of maize increases due to fermentation with improved scavenging power of fermented maize extract. The effect of roasting includes increased antioxidant activity and content, development of brown colouration and improved flavour due to the presence of Maillard reaction products. These changes contribute to better health benefits by enhancing the digestibility of nutrients and the activity of available antioxidants. Intakes of roasted fresh or dried maize varieties; especially, QPM are highly recommended to ameliorate the causes of night blindness, lung and prostate cancers.
A Low Prandtl Number Haemodynamic Oscillatory Flow through a Cylindrical Channel using the Power Series Method
Authors: Bunonyo Kubugha Wilcox , Ebiwareme Liberty
Published: July 2022

This article details the use of the power series method to solve a haemodynamics problem in a cylindrical channel with a low Prandtl number. The process involves modifying the Navier-Stokes momentum equation and energy equation with radiation absorption to represent flow through a cylindrical channel; the governing models are made dimensionless with the help of some dimensionless quantities; and the flow is subjected to no-slip boundary conditions. It is true that the flow through biological vessels is thought to be oscillatory due to the pulsatile nature of the heart. The solutions were thought to be associated with an oscillatory frequency term. The dimensionless models were perturbed using the oscillatory term, and the partial differential equations were reduced to ordinary differential equations. Wolfram Mathematica, version 12, was used to code the analytical solutions, which included biophysical parameters such as the Prandtl number, oscillatory frequency parameter, Hartmann number, radiation absorption parameters, and dimensionless wall temperature. It was discovered that changes in biophysical parameters caused changes in both the velocity and temperature profiles, which is extremely important for scientists and clinicians. It is recommended that we pay attention to some of the parameters mentioned above in order to achieve the best results when studying blood flow through a vessel.
Creative Inquiry-Based E-Worksheet: A Way to Improve Student's Self-Efficiency and Scientific Communication Skills
Authors: Apriyani Lisa , Distrik I Wayan , Rosidin Undang
Published: July 2022

The ability of self-efficacy and scientific communication is part of the important skills in the 21st century that must be practiced in learning. This study aims to improve self-efficacy and scientific communication skills using a creative inquiry-based e-worksheet. This study uses research and development methods that contain four stages, namely preliminary studies, planning and development, field testing, and dissemination. The sample of this research is the 68 12th-grade students of SMA N 1 Airnaningan. After product validation, obtained an average of 80.00% and declared valid. The average score of students' positive responses to the e-worksheet is 94.44%. While the effectiveness of the e-worksheet in improving self-efficacy and scientific communication skills was obtained from the results of the pretest and posttest with the experimental class N-gain value greater than the control class and the effect size self-efficacy value of 1.19 and scientific communication ability of 2.17 with high category. It was concluded that the e-worksheet based on creative inquiry was effective in increasing students' self-efficacy and scientific communication skills.
COVID-19 PANDEMIC AND CHILDREN SEPARATE
Authors: Aris
Published: July 2022

Separation child from parents or caregiver during the COVID-19 pandemic is frequent phenomenon found moment now this , so make phenomenon this important for researched more continued . Study this is study library . Update in research this that is analysis in study implemented based on phenomenon that occurs moment pandemic so that not yet once done study related Thing this in the past . The separation that occurs in children consequence pandemic could be shared Becomes two categories , that is not intentionally and intentionally aware . Separating children with people old or babysitter will boost various problems psychosocial in children . To overcome the problem of separating a child with people old or a babysitter could refer to the guidelines general protection child During COVID-19 pandemic . In Thing this researcher recommend that children capable for disclose feelings , don't get used to it child keep anger , as well child capable study from condition surrounding
KONSEP KESETARAAN GENDER DALAM PEMBANGUNAN DAN PEMBERDAYAAN EKONOMI MASYARAKAT
Authors: Afni Nur , Rezal Mohammad , Latoki Labandingi
Published: July 2022

One of the important elements in human development is economic growth that is equitably distributed between generations, between ethnicities, between genders, and between regions. One of the dimensions emphasized is the existence of gender equality. This dimension is also one of the development commitments and gender inequality that occurs in various parts of the world. Development in principle must provide justice and prosperity to all people, to men and women, to the rich and the poor. The current fact is that development has sharpened the gap in social justice between the poor and the rich, between women and men, between the ruling group and the common people. This can be seen from the existence of gender inequality in development.
PENTINGNYA PENDIDIKAN LINGKUNGAN HIDUP BAGI ANAK USIA DINI
Authors: Siti Rabiatul Adawiyah
Published: July 2022

Environmental problems are not only related to the symptoms of evolutionary natural change, but also to the pollution caused by industrial and family waste. Therefore, environmental education for early childhood is expected to be one of the patterns to manage and protect the environment around us. models that can be used Conservation Scout model is used as a means to provide education on environmental awareness and concern. introduction to the environment for early childhood, the environment consisting of human resources, biological natural resources, non-biological natural resources, and artificial resources and elements of the natural environment, both physical and biological.
In vitro seed germination and shoot proliferation of bat flower (Tacca chantrieri Andre)
Authors: Wiendi Ni Made Armini , Sushanty Rezky Y.N. , Sagita Citra Alunna , Krisantini -
Published: July 2022

Tacca chantrieri Andre, or bat flower, is a species from Taccaceae family that has unique inflorescences consisting of large, dark-colored bracts with long whiskers, making it suitable as ornamental pot plants. T. chantrieri leaves and rhizomes contain phytochemicals that have been reported to have medicinal properties. T. chantrieri is increasingly hard to find in their native habitat; their seeds have a very slow and low germination rate, whereas propagation in vivo by division takes a long time. A protocol is presented to optimize seed germination and in vitro propagation of T. chantrieri from West Borneo, Indonesia. We have developed a method to improve in vitro germination of freshly harvested T. chantrieri seeds. Pre-sowing treatment with 5 mg L –1 of GA3 for 5 × 24 h and addition of GA3 at 5 mg L–1 to the MS medium significantly promoted earlier and final germination up to >90% within 10 weeks after sowing compared to without GA3, or immersing in GA3 for shorter durations. MS media supplemented with indole acetic acid (IAA) at 0.5 mgL–1 and benzyl adenine (BA) at 1 or 2 mgL–1 was effective to induce shoot proliferation from in vitro germinated seeds; 7–10 shoots were produced after 12 weeks of culture. Shoot proliferation from basal shoot explants were best on MS supplemented with IAA at 0.5 mgL–1. The results of this study have provided a basis for further mass propagation efforts of T. chantrieri.
Veterinary needs for animal cruelty recognition and response in the United States center on training and workplace policies
Authors: Patterson-Kane Emily G. , Kogan Lori R. , Gupta Maya E. , Touroo Rachel , Niestat Laura N. , Kennedy-Benson Alison
Published: July 2022

OBJECTIVE

To better understand the experiences and perceptions of veterinary professionals in the US responding to suspected cases of animal cruelty.

SAMPLE

1,027 US veterinary professionals.

PROCEDURES

An anonymous survey was distributed via social media and veterinary professional associations between October 15 and November 15, 2020.

RESULTS

Responses indicated that more cases of suspected animal cruelty were seen by those who reported having had cruelty training and in workplaces with emergency intake or a relationship with law enforcement. In addition, suspected cases were more likely to be reported to authorities by respondents who indicated there was a workplace policy for handling cruelty cases and by individuals who indicated that they were aware that they were mandated reporters.

CLINICAL RELEVANCE

The important needs for veterinary professionals in relation to animal cruelty are more training to recognize animal cruelty, workplace policies for reporting, and knowledge of reporting laws.
Fish consumption habits of pregnant women in Itaituba, Tapajós River basin, Brazil: risks of mercury contamination as assessed by measuring total mercury in highly consumed piscivore fish species and in hair of pregnant women
Authors: Oliveira Ricardo Bezerra de , Silva Domingas Machado da , Franco Thamilles Santa Bárbara Sousa , Vasconcelos Cláudio Ramon Sena , Sousa Deise Juliane dos Anjos de , Sarrazin Sandra Layse Ferreira , Sakamoto Mineshi , Bourdineaud Jean-Paul
Published: July 2022

The Tapajós River basin in the Amazon region, Brazil is one of the most active gold mining areas in the world. In this study, we evaluated fish consumption habits and mercury exposure in 110 pregnant women in the city of Itaituba by measuring their total hair mercury concentrations. In addition, we investigated seasonal differences in mercury concentrations in two highly consumed piscivorous fish species, tucunaré (Cichla spp.) and pescada (Plagioscion squamosissimus). Total fish mercury concentrations (THg) during the dry season were 0.62±0.07 mg/kg for Cichla spp. and 0.73±0.08 mg/kg for P. squamosissimus. During the rainy season they were 0.39±0.04 and 0.84±0.08 mg/ kg, respectively. Of our participants 44 % declared that they ate Cichla spp. and 67 % P. squamosissimus. Mean mercury concentration in their hair was 1.6±0.2 mg/kg and was above the US Environmental Protection Agency (US EPA) reference dose of 1 mg/kg in 48 % of them. Mean fish THg concentrations were also above the joint Food and Drug Administration and US EPA safety limit of 0.5 mg/kg for P. squamosissimus during both seasons and for Cichla spp. during the dry season only. These results show that pregnant women should avoid consumption of these piscivorous fish species during pregnancy and call for a regular programme to monitor Hg levels in that area.
Perfluorooctanoic acid affects mouse brain and liver tissue through oxidative stress
Authors: Endirlik Burcu Ünlü , Eken Ayşe , Canpınar Hande , Öztürk Figen , Gürbay Aylin
Published: July 2022

The aim of this study was to investigate oxidative stress induced by perfluorooctanoic acid (PFOA) in the brain and liver tissues of Balb/c mice as well as protective effects of taurine and coenzyme Q10 (CoQ10) in both organs. For this purpose, animals were treated with PFOA (15 and 30 mg/kg) orally and their lipid peroxidation, total glutathione levels (GSH), and antioxidant enzyme activities measured and both tissues analysed for histopathological changes. Our results showed a dose-dependent decrease in body weight and increase in relative brain and liver weights, PFOA-induced lipid peroxidation and reduced glutathione peroxidase (GPx) activity in the brain tissue, and changes in GSH levels, GPx, superoxide dismutase (Cu-Zn SOD), and catalase (CAT) activities in the liver tissue. Pre-treatment with taurine or CoQ10 provided protection against PFOA-induced Cu-Zn SOD reduction in the liver tissue. Our findings evidence the depleting effect of PFOA on antioxidative systems and confirm that PFOA exerts its (neuro)toxicity through oxidative stress, but further research is needed to identify the exact toxicity mechanisms, especially in the brain.
Occupational exposure to BTEX and styrene in West Asian countries: a brief review of current state and limits
Authors: Rahimpoor Razzagh , Sarvi Fatemeh , Rahimnejad Samira , Ebrahimi Seyed Mohammad
Published: July 2022

The aim of introducing occupational exposure limits (OELs) is to use them as a risk management tool in order to protect workers’ health and well-being against harmful agents at the workplace. In this review we identify OELs for benzene, toluene, ethylbenzene, xylene (BTEX), and styrene concentrations in air and assess occupational exposure to these compounds through a systematic literature search of publications published in West Asian countries from 1980 to 2021. OELs for BTEX and styrene have been set in Iran and Turkey to levels similar to those in European countries and the US. The search yielded 49 full-text articles that cover studies of exposure assessment in six countries, but most (n=40) regard Iran. Average occupational exposure to benzene of workers in oil-related industries is higher than recommended OEL, while average occupational exposure to other compounds is lower than local OELs (where they exist). Currently, information about levels of occupational exposure to BTEX and styrene is insufficient in West Asian countries, which should be remedied through OEL regulation and application. Furthermore, coherent research is also needed to determine actual levels of occupational exposure, dose-responses, and the economic and technical capacity of local industries to address current issues.
Antioxidative, cytotoxic, and antibacterial properties of self-assembled glycine-histidine-based dipeptides with or without silver nanoparticles in bio-inspired film
Authors: Eylul Kiymaci Merve , Erdoğan Hakan , Bacanlı Merve
Published: July 2022

Recent years have seen much attention being given to self-assembly of dipeptide-based structures, especially to self-regulation of dipeptide structures with different amino acid sequences. In this study we investigated the effects of varying solvent environments on the self-assembly of glycine-histidine (Gly-His) dipeptide structures. First we determined the morphological properties of Gly-His films formed in different solvent environments with scanning electron microscopy and then structural properties with Fourier-transform infrared (FTIR) spectroscopy. In addition, we studied the effects of Gly-His films on silver nanoparticle (AgNP) formation and the antioxidant and cytotoxic properties of AgNPs obtained in this way. We also, assessed antibacterial activities of Gly-His films against Gram-negative Escherichia coli and Pseudomonas aeruginosa and Gram-positive Staphylococcus aureus. Silver nanoparticle-decorated Gly-His films were not significantly cytotoxic at concentrations below 2 mg/mL but had antibacterial activity. We therefore believe that AgNP-decorated Gly-His films at concentrations below 2 mg/mL can be used safely against bacteria.
Architectural education in the context of social sciences
Authors: Mazalán Peter , Vinárčiková Jana , Hronský Michal C.
Published: July 2022

Architecture is an interdisciplinary subject that utilises knowledge and experience from numerous scientific fields. Social sciences in particular have a special relationship with architecture, transforming it into a living and reflective discipline. Architectural design is basically a hypothesis that explores how society would react to its substance and the conditions it creates. However, social sciences subjects are often limited to theoretical knowledge over the course of architectural education. This research discusses social and psychological sciences and their architecture-specific theories as powerful tools for student engagement in architectural education. Focusing on educational concepts which lead to a greater understanding of dynamic societal changes, the research also indirectly analyses the traditional process of creating a universal design, outside of this understanding. This approach enables students to understand the limitations of their education and to think analytically about design options and the improved interactions not only with their surroundings but, more importantly, with a specific person or group of people. Activities that develop this kind of understanding are different forms of interactive art (site-specific installations) and social activities (focus groups) with different demographics (persons with health impairments – for example barrier-lessness and social inclusion). The base research analyses social and psychological sciences in relation to the process of architectural design education with a focus on European context. In social sciences, social and spatial connection and their often implied or ignored relationships are investigated in increasingly more interesting ways. The aim of this study is to provide a complex outline of the educational methods which, on top of technological change, also actively monitor social change.
Use of different matrix systems in the treatment of simple caries.
Authors: Kovács-Ivácson Andrea-Csinszka , Stoica Alexandra Mihaela , Pop Mihai , Dakó Timea
Published: July 2022

Dental matrix systems are instruments used in the treatment of simple caries which replace the missing wall of the tooth during restoration. The aim of the study is to evaluate, using a questionnaire-based survey, the most used matrix systems among dentists and dentistry students. Materials and methods: Two hundred and fifty questionnaires containing 8 questions were distributed in electronic and printed format to dentists in Mureș and Harghita countries and dentistry students from 4th to 6th year of study at George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș. The obtained data were then analyzed using Microsoft Excel and SSPS 20.0.0. Statistical analysis was performed using the one tailed ANOVA and Tukey/ Kramer test. Significance level was set at a value of p<0.05. Results: Of the persons who completed the questionnaire 97.78% consider it important to use a matrix system during tooth restoration, 98.25 % use it when restoring class II Black cavities. Sectional matrixes are used most commonly during class II Black cavity restoration, for MOD cavities the circular matrix systems are the preferred ones. During class V Black cavity restoration only 5.45% of the doctors and students use a matrix system. Wooden wedge is used most frequently in combination with a matrix system. Only 3.3% always ask for a control X-ray after a tooth restoration. Conclusion: The use of matrix systems is considered to be very important by both dental students and dentists in the restoration of simple caries lesions and are most commonly used for a Black class II, III, IV, and MOD cavity. More importance should be given to follow-up X-rays after tooth restoration.
Dietary clove leaf meal supplementation: influence on egg qualities and reproductive morphometry of domestic laying birds
Authors: Olateju Imoleayo Sarah , Adu Olufemi Adesanya , Ewegbemi Oluwaseyi Titilope
Published: July 2022

This study investigated the effects of dietary Syzygium aromaticum supplementation on egg qualities, egg cholesterol and reproductive morphometry of laying hens. Three experimental diets were formulated containing 0.00%, 0.25% and 0.50% Syzygium aromaticum leaf meal (SLM). One hundred and fifty (20 weeks old) Isa-Brown birds were randomly assigned to three-treatment group which comprised 50 birds replicated five times with 10 birds each. Six eggs were collected from each replicate three days to the end of the 1st cycle of laying (4 weeks), 2nd and 3rd cycles and properly labelled for egg qualities assessment. At the end of the 12 weeks feeding trial, 45 birds (3 birds per replicate, that is, 15 birds per treatment) were slaughtered and dissected to evaluate their reproductive parameters. The result showed positive dietary effect (P<0.05) on shell thickness, yolk height, yolk index and egg mass. Cholesterol level of whole eggs, egg yolk and albumen were significantly lowered. Weight of entire reproductive tract and ovary as well as length of infundibulum, magnum, isthmus, uterus and vagina were significantly increased by dietary SLM. Conclusively, clove supplementation at 0.25% and 0.50% could be adopted for improved egg shell thickness and low-cholesterol eggs in poultry production
Genetic evaluation of Teleorman Black Head ewes using genes polymorphism for improving milk traits
Authors: Lazar Cristina , Gras Mihail Alexandru , Pelmus Rodica Stefania , Rotar Catalin Mircea
Published: July 2022

The purpose of the present study was to asses specific gene markers associated with the sheep milk production in Teleorman Black Head ewes. For the proper selection of the best candidates for milk production, the genetic markers such as CSN3, BLG and PRL were selected. To detect CSN3, PRL and BLG polymorphisms, genomic DNA was isolated from blood samples collected from 50 ewes. ASA-PCR and PCR-RFLP methods were used for genotyping of animals; the genotypes frequencies and Hardy-Weinberg equilibrium were estimated using R software. In our samples, for CSN3 gene were identified two genotypes (CC and CT), the most frequent being CT genotype (94%). For PRL gene, were identified three genotypes (AA, AB and BB), AA and BB genotypes being the most frequent (36% and 40% respectively). Also, three genotypes were identified for BLG gene (AA, AB and BB), with an increased frequency of AB genotype (44%). These preliminary data will be correlated in the next experiments with phenotypic data, generating important tools for genetic selection of the Teleorman Black Head sheep population.
Plasma biochemical profile of dairy cows, with respect to diet and breed
Authors: Vasilachi Andreea , Ciurescu Georgeta , Hăbeanu Mihaela
Published: July 2022

The aim of this study was to determine if total replacement of soybean meal (SBM) with a rapeseed by-product (RS-by) in the diets of Romanian Black Spotted (RBS) and Montbéliarde (MB) breeds will cause changes of the biochemical profile in lactating cows. Thirty-two healthy multiparous dairy cows, mid-lactation stage, were randomly assigned to four homogeneous groups (2 RBS and 2 MB) of 8 cows each for 42 days of experiment. Groups received the same basal diet (maize silage and alfalfa hay) and two types of compound feed: control (with 12.5% SBM) and experimental (with 12.5% RS-by). Individual blood samples were collected at the end of the trial from the mammary vein and plasma biochemical parameters were determined. The main effects of feed, breed and their interaction were statistically analyzed with SPSS software. Plasma energy parameters were not affected by the dietary treatments, but glucose was higher in MB breed. Total protein and urea were significantly higher (7.99 vs. 6.93 g/dL; 18.50 vs. 15.31 mg/dL) in control compared to the experimental group; urea was also influenced by the feed x breed interaction. Magnesium was significantly higher (1.98 vs.1.59 mg/dL) in the experimental group. Alanine aminotransferase and alkaline phosphatase were significantly higher (35.75 vs. 29.00 U/L; 43.62 vs. 36.40 U/L) in the control group. The mineral or enzimatic analytes were not affected by animal breed. The majority of the parameters ranged between the normal limits.
Estimation of the genetic parameters for Somatic Cell Scores in the first lactation of Romanian Black and White cattle
Authors: Pelmuș Rodica Ștefania , Grosu Horia , Gras Mihail Alexandru , Lazăr Cristina , Rotar Mircea Cătălin
Published: July 2022

The aim of study was the estimation of the genetic parameters of somatic cell score of Romanian Black and White cattle population. Test-day records of somatic cell count (SCC) of 305 days lactation were from Romanian Black and White cattle population from experimental farm of our institute. The mean of somatic cell count of milk in the first lactation of Romanian Black and White cows was 291966.89. The genetic parameters were estimates with random regression test-day animal model. The heritability for somatic cell score (SCS) ranged from 0.0473 to 0.147. The breeding values for the best cows for somatic cell score were between -35.566 and -191.358. The genetic correlations between somatic cell count milk records test-day were positive. The phenotypic and genetic correlations between somatic cell count and milk yield were negative.
Linear Programming with Interval Coefficients
Authors: Baboş Alina
Published: July 2022

Many operational research optimization models, such as linear programming, assume that the data used to build a model is accurate, but in the real world most of these assumptions are only approximately true. In linear programming models, uncertainty is associated with the model coefficients during the formulation stage. A small number of papers discuss these models of linear programming with interval coefficients (LPIC). Using the method presented in paper [1], capable of solving linear programming problems with numerical intervals as intervals, we give in this paper a practical example, to demonstrate the use and the practicality of interval coefficients in linear programming models.
On the Calculus of Functionally Graded Plates
Authors: Năstăsescu Vasile , Bârsan Ghiță , Marzavan Silvia
Published: July 2022

This paper presents some of our results regarding calculus of the functionally graded plates (FGPs). Such plates are made of Functionally Graded Materials (FGMs), which represent a new material class belonging to the composite materials. Our paper presents some material laws in a comparative way. But the main purpose of this paper is to provide calculus concepts and calculus methodologies, based on the means available in scientific research of mechanical engineering field, for the calculation of plates made of FGMs. Thus, the authors use the concepts of multilayer plate and equivalent plate, using both analytical and numerical calculus. The numerical method used are the Finite Element Method (FEM).The calculation aims both to determine the displacements and the stresses of the plates under statical loads, as well as to determine the free vibration frequencies. The research methodology is based on combining analytical calculation, where and when possible, with numerical simulation. The validation of our results is done by comparison with the analytical solution and the comparative analysis of the methods.
Practical Implementation of Reflectors for Wi-Fi Antennas
Authors: Sârbu Annamaria , Zaharia Ana-Maria
Published: July 2022

This article presents a practical approach towards the use of reflectors for Wi-Fi antennas. First, a custom Wi-Fi antenna was simulated in CST Studio software. Using simulation, we have analysed the effects of several types of reflectors on the antenna parameters. The most effective solution (antenna plus corner reflector) was manufactured and mounted on the specially designed ensemble. The designed ensemble enables automatic rotation of the reflector around the antenna. Simulation results were finally confronted with experimental measurements to validate the data. Our findings show that the presence of the reflector significantly increases the gain in the main radiation lobe and several other radiating directions.
Electrochemical Sensors for the Detection of Chemical Warfare Agents: Strategy and Exemples
Authors: Stoian Ioan-Adrian , Moşteanu Dănuț-Eugeniu , Ilie Florin Vasile
Published: July 2022

Since the addition of chemical warfare agents (CWAs) in the World War I, there has been a constant demand for the development of rapid and accurate analytical instruments for detecting and identifying these agents. The most common techniques used in CWAs determination are spectroscopic and chromatographic techniques. Although they possess remarkable robustness, they require prolonged analysis time, experienced personnel, expensive instrumentation and are not fit for on-field applications and fast early alert. Fortunately, electrochemical sensors represent a viable alternative due to their, simple instrumentation, high sensitivity and low cost. The aim of this article is to highlight some important aspects of electrochemical sensing and to present some electrochemical sensors developed for CWAs detection. The future perspectives and challenges in electrochemical sensor development for CWAs detection is also discussed.
Low-energy pulsed electromagnetic field therapy reduces pain in fibromyalgia: A randomized single-blind controlled pilot study
Authors: Giovale Massimo , Novelli Lucia , Persico Luca , Motta Francesca , Rampoldi Stefano , Galli Rossana , Monteforte Patrizia , Doveri Marica , Bianchi Gerolamo , Selmi Carlo , Bottaro Luigi Carlo
Published: July 2022

Objectives

Fibromyalgia symptoms have a significant impact on the quality of life and respond poorly to medications. It has been hypothesized that the use of low-energy pulsed electromagnetic field (PEMF) induces neuroprotective effects that may interfere with pain perception. We explored the efficacy of PEMF in patients affected by fibromyalgia.

Methods

Twenty-one females (median age 59 years, interquartile range [IQR] 16.5) affected by fibromyalgia were randomized to receive pulsed electromagnetic field-triple energy pain treatment (PEMF-TEPT) or placebo at T0 and at 4 weeks and 8 weeks. Fibromyalgia impact questionnaire (FIQ), widespread pain index (WPI), visual analog score (VAS) pain, symptom severity (SS) scale, and short form 36 (SF-36) health survey questionnaire have been evaluated.

Results

Patients in the PEMF-TEPT group had a significantly higher reduction of WPI compared to placebo (mean difference −12.90 ± standard deviation [SD] 5.32 vs. −1.91 ± 4.55, difference in difference [DD] of −10.99; P < 0.001), of SS score (−4.10 ± 4.85 vs. −2.00 ± 2.32; DD = −2.1; P < 0.05), of VAS pain (−48 ± 30.75 vs. −16.82 ± 23.69; DD = −31.18; P < 0.01). They also reported a higher improvement of FIQ and SF-36, albeit not reaching statistical significance.

Conclusion

In our pilot controlled study, PEMF-TEPT appeared to be safe and improved fibromyalgia symptoms.
FAKTOR - FAKTOR YANG BERHUBUNGAN DENGAN KECEMASAN PADA PASIEN PASCA STROKE
Authors: Khairunnisa Siti , Elita Veny , Bayhakki Bayhakki
Published: July 2022

Stroke is a clinical syndrome characterized by acute loss of brain function and can cause death. Stroke can cause complex physical and psychological problems. The physical problem that is usually experienced by stroke sufferers is paralysis, while one of the psychological problem that is usually experienced by stroke patients is anxiety. This study aims to determine the factors related to anxiety in post-stroke patients. A cross sectional design was conducted among 30 post-stroke patients using quota sampling. Hamilton Anxiety Rating Scale (HARS) was used to measure the level of anxiety, while Pittsburgh Sleep Quality Index (PSQI) was used to measure sleep quality. Chi-Square Test by 0,05 significance values is examined as data analysis. The results showed that there is a relationship between age and anxiety in post-stroke patients (p value = 0,012), there is a relationship between gender and anxiety in post-stroke patients (p value = 0,004), and there is a relationship between sleep quality and anxiety in post-stroke patients (p value = 0,004). Post-stroke anxiety in the severe category occurs mostly in the elderly, female, and has poor sleep quality.
TINGKAT PENGETAHUAN COVID-19 BERHUBUNGAN DENGAN KECEMASAN PADA PENDERITA DIABETES MELLITUS
Authors: Zofir Kusuma Mu’aedy , Setyorini Andri
Published: July 2022

Peningkatan yang sangat pesat pada kasus Covid-19 menimbulkan keresahan dalam masyarakat. Dampak psikologis mulai tergambar dari mereka yang merasa cemas, panik, bahkan stres. Hal ini lebih terasa bagi masyarakat yang memiliki penyakit komorbid, dimana mereka akan lebih rentan mengalami perburukan kondisi apabila terinfeksi Covid-19. Resiko kematian pada penderita diabetes mellitus akibat Covid-19 lebih tinggi hingga 50% dibandingkan orang-orang tanpa diabetes. Penelitian ini bertujuan untuk mengetahui hubungan tingkat pengetahuan Covid-19 dengan kecemasan pada penderita diabetes mellitus. Penelitian ini dilakukan di Wilayah Puskesmas Banguntapan II Kabupaten Bantul. Desain penelitian adalah deskriptif korelasi dengan pendekatan cross sectional. Sampel penelitian adalah 34 pasien diabetes mellitus dengan menggunakan teknik pengambilan purposive sampling. Instrumen yang digunakan untuk mengukur tingkat pengetahuan adalah kuesioner tingkat pengetahuan Covid-19, sedangkan untuk kecemasan menggunakan kuesioner Hamilton Anxiety Rating Scale. Analisis bivariat menggunakan uji Kendall Tau. Hasil penelitian menunjukkan tingkat pengetahuan Covid-19 pada penderita diabetes mellitus, sebagian besar berada pada kategori tinggi sebanyak 31 responden (91,2%) dan kecemasan pada penderita diabetes mellitus sebagian besar dengan kategori cemas sedang sebanyak 28 responden (82,4%). Ada hubungan antara tingkat pengetahuan Covid-19 dengan kecemasan  pada penderita diabetes mellitus dengan nilai korelasi sebesar 0,483 dan p value 0,004 (<0,05).