bluuebunny/crossref_metadata_2025 huggingface dataset:
EFEKTIVITAS PENILAIAN PEMBELAJARAN MATEMATIKA SELAMA MASA PANDEMI COVID-19 SDK NDONA 2 KECAMATAN NDONA KABUPATEN ENDE
Authors: Ana Maria , Ndole Theodosia
Published: March 2021

This study aims to determine the effectiveness of the assessment of mathematics learning during the COVID-19 pandemic at SDK Ndona 2, Ndona District, Ende Regency. This type of research is qualitative research with data collection techniques in this study carried out by means of observation, interviews, and documentation. After the data was collected, the data were analyzed qualitatively. The results of this study indicate that the effectiveness of assessing mathematics learning during the COVID-19 pandemic only focuses on the cognitive assessment of students, therefore teachers have other techniques in carrying out mathematics learning assessments so that they can provide a real picture of students' abilities. The conclusion from the results of this study is that during this pandemic the assessment of mathematics learning has been effective. This is because the assignment given by the teacher is not done by students but is served by someone else (parents, siblings)
El Horacio lírico de Víctor Botas
Authors: Bartolomé Jesús
Published: March 2021

El propósito de este trabajo es de estudiar la recepción que el poeta Víctor Botas hace de la tradición clásica y en concreto de la lírica de Horacio, las Odas y el Canto Secular. Con tal objetivo, distinguiremos tres aspectos de esa relación: la construcción de Horacio como personaje (1), las versiones poéticas del libro Segunda mano (2), y, por último, las relaciones intertextuales que establece Víctor Botas con Horacio (3). En este último aparatado nos centraremos en tres temas: la reflexión sobre la propia poesía, la actualización del tópico del carpe diem, y la perdurabilidad de la poesía.
THE CULTURAL COMMONALITIES OF IRAN AND UZBEKISTAN (From the perspective of the Persian language and literature history)
Authors:   Associate Professor of Persian Language and Literature, Payame Noor University, Iran, Abbasi Sima , Mirzakhmedova Khulkar ,   Associate Professor of Persian Language, Tashkent State University of Oriental Studies, Uzbekistan
Published: March 2021

Iran and Uzbekistan are both countries with a very old history and are influential countries in the culture and civilization areas in Asia. Although the new political identity of Uzbekistan has not been formed recently since its independence, the historical background of this land and its important and crucial cities and great personalities and thinkers of this country is clear and evident. Uzbekistan, as part of the historical Transoxiana region, has been the ground for many cultural, linguistic, literary, and political events for its neighboring lands. Iran is also an ancient country with wide geographical latitude and longitude that has had a special effect on the cultures of different nations and ethnic groups in different historical eras. The overlap of these two cultures throughout history has led to the emergence of rich and dominant culture, in which the characteristics of Iranian-Islamic culture can be clearly observed. In the present study, cultural commonalities between these two countries were briefly investigated and identified with an emphasis on Persian language and literature as two important cultural origins. The common historical inseparable roots, common cultural and political history, influence on the formation, prevalence, and identification of Persian language and literature along with the similarity of traditions, rituals, and social beliefs are among the main factors in the formation of a close cultural relationship between Iran and Uzbekistan.
SYNTAX ASPECTS OF THE USE OF MOTIVES IN UZBEK POETRY OF 20-30 YEARS OF THE XX CENTURY
Authors:   Phd Student, Andijan State University named after Z.M.Babur, Kuchkarov Oybek Abdumansurovich
Published: March 2021

The article provides reasonable comments on the syntactic aspects of the use of motifs in Uzbek poetry of the 20-30s of the XX century. The article also examines the syntax of motives in the poetry of the period, ie their interaction and the formation of complexes of motives, which are manifested as thematic-ideological units in the composition of the poem, and this issue is revealed in the analysis of specific poems.
TRAINING OF FUTURE TEACHERS TO PROFESSIONAL EDUCATIVE ACTIVITY ON THE BASEMENT
Authors:   PhD in Pedagogical Sciences, Department of Pedagogy and Psychology, Gulistan State University, Nurumbekova Yarkinay
Published: March 2021

The article enlightens the analyze of the system of improving spiritual-moral features, transformation of cognitive and sensual-social, also dialectical unit of individualization of person’s intronization with general human values. Spiritual-moral education, which was developed in our country and enriched with ancient values of our ancestors, leads to improvement of pedagogical process. In the process of the research, there was obtained organization of the process of formation of spiritual-moral features while training future teachers to spiritual-historical values, spiritual-moral bases, professional-educative activities. Spiritual-moral feature as a complicated social phenomenon in the formation process, closely related with national, spiritual, historical, moral and legal factors. At this point, national and spiritual values are not only historical-spiritual heritage of our nation, but also important factors of education and formation of fully complex person. On the basement of the analyze, there were obtained and analyzed that spiritual-moral feature has a complicated structure and covers components such as spiritual-moral knowledge, spiritual-moral skills, spiritual-moral qualifications, spiritual-moral features, spiritual-moral advantages.
DIAGNOSTICS OF THE CONTENT OF EDUCATION AS A PEDAGOGICAL PROBLEM
Authors:   Teacher, Gulistan State University, Fakhriddinov Yokub
Published: March 2021

The following article discusses the functions of control over the formation of knowledge, skills and abilities in the educational process, didactic tests, the essence of diagnostic testing levels.
THE NEED TO FORMULATE THE VISION OF THE "THIRD RENAISSANCE" IN SECONDARY SCHOOLS
Authors:   Researcher, Samarkand State Institute of Foreign Languages, Amirova Dilovar
Published: March 2021

: In the article was spoken about the development of youth in the period of the creation of the third Renaissance Foundation laid down by the president of the Republic of Uzbekistan Sh.Mirziyoyev, the important aspects that should be addressed to him in the universal system of Education.
SOME ASPECTS OF RESETTLEMENT POLICY IN ANDIJAN REGION
Authors:   Teacher, Department of ", B.B. Abbasov ,   Archivology",   , Namangan State University
Published: March 2021

: There is analyzed the problem of population relocation and internal migration in the Andijan oblast in the middle of 50s of XX century. The migration policy, has been carried out by the party and the Soviet authorites, was aimed the development of virgin and fallow lands in Andijon region and further development of cotton growing in the Uzbek SSR. The social structure of the resettled people of collective and state farms of the Andijan oblast was also studied.
PURCHASE MEMORIES OF TASHKENT MERCHANTS IN TURKISH MARKETS
Authors:   PhD student, Institute of History of the Uzbekistan Academy of Sciences, Okhunjonova Shahodat Yusubjon kizi
Published: March 2021

This article the role of persons engaged in Shuttle trade in society, as well as the importance of their commercial activities for raising the market with necessary goods and meeting the needs of the population. In addition, the study shows a number of innovations and changes used in recent years in the implementation of the Shuttle business.
HISTORY AND TODAY'S SIGNIFICANCE OF THE SHANGHAI COOPERATION ORGANIZATION
Authors:   3rd year student, Faculty of History, Tashkent State Pedagogical University named after Nizami, Abdullayeva Elmirahon Mamatisoq qizi
Published: March 2021

In this article, we would like to provide interesting and important information about the Shanghai Cooperation Organization (SCO), which provides regional security and economic cooperation around the world. At the same time, we would like to emphasize the important role and place of the Shanghai Cooperation Organization (SCO) in the countries of the world, as well as in our beautiful and unique Uzbekistan.
THE ROLE OF PUNCTUATION MARKS IN THE PRAGMATIC MEANING OF THE ANALYSIS OF CONJUNCTIONS
Authors:   Teacher, Jizzakh State Pedagogical Institute named after A.Kadiriy, Ganiyeva Hayriniso Bakhtiyorovna , Usmonov Aslam Karshiboyevich ,   Teacher, Jizzakh State Pedagogical Institute named after A.Kadiriy
Published: March 2021

This article explores the pragmatic meaning of conjunctions based on punctuation functions. It has been found that conjunctions produce locutive, illocutive, and perlocutive acts in speech.
DERIVATIVES OF WORDS, WORD COMBINATIONS AND PHRASES WITH THE WORD "MARKET" IN THE UZBEK LANGUAGE
Authors:   Doctor of Philological Sciences, Professor, Bukhara State University, Uraeva Darmon Saidakhmedovna
Published: March 2021

The article examines derivative words, word combinations and phrases formed in the Uzbek language with the participation of the word "market". Synonyms for this word are words borrowed from the English language. Revealed literal and figurative meanings of words and phrases formed with the participation of the word "market".
SEMANTICS AND THEIR ARTISTIC AND AESTHETIC FUNCTIONS IN SIRAJIDDIN SAYYID'S POETRY
Authors:   Teacher, Department of Uzbek language teaching methods, Jizzakh State Pedagogical Institute named after A.Qodiriy, Kholdorova Shohista
Published: March 2021

This article describes in detail the semantic movements used in Sirojiddin Sayyid’s iyrics and their stylistic and linguistic features. Also, the poet’s unique visual skills and the expressin of subtle meanings of language units have been analyzed from a linguopoetic point of view.
La gestión institucional y su efecto en el logro de la calidad académica. Caso de la Escuela Académico Profesional de Ingeniería Electrónica de la Facultad de Ingeniería Electrónica y Eléctrica de la Universidad Nacional Mayor de San Marcos, Año 2020
Authors:   Universidad Nacional Mayor de San Marcos|, Jara Jara Nolan , Garay Capcha Gladys Maria ,   Universidad César Vallejo
Published: March 2021

Una de las estrategias educativas que cada institución debería poseer es saber identificar los estilos de gestión de cada unidad, ya que estos pueden influir directamente en lograr un buen rendimiento académico. El objetivo de la investigación fue Determinar el efecto de la aplicación de la gestión institucional en el logro de indicadores de calidad del área académica universitaria de la Escuela Académica Profesional de Ingeniería Electrónica de la Facultad de Ingeniería electrónica y eléctrica de la Universidad Nacional Mayor de San Marcos, en el año 2020. Al aplicar un diseño no experimental descriptivo correlacional, se seleccionó una muestra no probabilística intencionada de 70 docentes. Al respecto se aplicó dos encuesta-cuestionario, una acerca de la Gestión Institucional y otra sobre Calidad del área académica universitaria. Los resultados fueron procesados aplicando el programa estadístico SPSS versión 20.0. Como consecuencia de la exploración estadística de los resultados obtenidos se concluye que es significativo el efecto del uso de la gestión universitaria en la consecución de la calidad académica universitaria en la Escuela Académica Profesional de Ingeniería Electrónica de la Facultad de Ingeniería electrónica y eléctrica de la Universidad Nacional Mayor de San Marcos, en el año 2020.
Invariants of Surfaces in Three-Dimensional Affine Geometry
Authors:   University of Iceland, Iceland, Arnaldsson Örn , Valiquette Francis ,   Monmouth University, USA
Published: March 2021

Using the method of moving frames we analyze the algebra of differential invariants for surfaces in three-dimensional affine geometry. For elliptic, hyperbolic, and parabolic points, we show that if the algebra of differential invariants is non-trivial, then it is generically generated by a single invariant.
GRIPPING DEVICES OF INDUSTRIAL ROBOTS FOR MANIPULATING OFFSET DISH ANTENNA BILLETS AND CONTROLLING THEIR SHAPE
Authors: Savkiv Volodymyr , Mykhailyshyn Roman , Maruschak Pavlo , Kyrylovych Valerii , Duchon Frantisek , Chovanec Ľuboš
Published: March 2021

Invention proposes an adaptive gripping device of an industrial robot, which combines functions of capturing different-shape manipulation objects with control of deviations from the shape of these objects. The device is a T-shaped frame with three Bernoulli grips pivotally mounted thereon and a pneumatic sensor. Analytical dependencies are presented for determination of design parameters of adaptive gripping device and calculation of required lifting force of each of Bernoulli Gripping Device (BGD). Formula is derived for determining its position of pneumatic sensor on frame of gripping devices. In the ANSYS-CFX software environment, numerical simulation of airflow dynamics in the gap between the cooperating BGD surfaces and the offset mirror antenna plate blank. The simulation was based on the Reynolds-Averaged Navier–Stokes (RANS) equations of viscous gas dynamics, the Shear Stress Transport (SST) model of turbulence, and the y model of laminar–turbulent transition. As a result of the simulation, the effect of the curvature radius of the surface of the plates of offset mirror antennas on the BGD power characteristics was determined.
Path2Integrity Learning Cards & Handbook for Trainers and Lecturers: M-Series
Authors: Prieß-Buchheit Julia , Häberlein Lisa , Lindemann Tom
Published: March 2021

Do you want to teach future researchers how to integrate their knowledge into their own research activities, as well as help them understand how important reliable research is for society? This handbook accompanies the Path2Integrity learning cards (P2ILC) on six topics (https://www.path2integrity.eu/ri-materials) and introduces you to an easy and fun learning programme that has been evaluated in over 15 training sessions. The Path2Integrity learning cards M-series is especially designed for graduates who already have a university degree. They learn how responsible research needs to be conducted in order to be reliable and thus useful for society.
Investigation of the critical heat flux in small-diameter channels
Authors: Belozerov Vladimir I. , Gorbach Aleksandr S.
Published: March 2021

The paper describes experimental studies into the hydrodynamics and heat exchange in a forced water flow in small-diameter channels at low pressures. The timeliness of the studies has been defined by the growing interest in small-size heat exchangers. Small-diameter channels are actively used in components of compact heat exchangers for present-day engineering development applications.

The major difficulty involved in investigation of heat-transfer processes in small-diameter channels consists in the absence of common methodologies to calculate coefficients of hydraulic resistance and heat transfer in a two-phase flow. The channel size influences the heat exchange and hydrodynamics of a two-phase flow as one of the determining parameters since the existing internal scales (vapor bubble size, liquid droplet diameter, film thickness) may become commensurable with the channel diameter, this leading potentially to different flow conditions. It is evident that one cannot justifiably expect a change in the momentum and energy transfer regularities in single-phase flows as the channel size is reduced for as long as the continuum approximation remains valid.

The authors have analyzed the experiments undertaken by Russian scientists to investigate the distribution of thermal-hydraulic parameters in channels with a small cross-section in the entire variation range of the flow parameters in the channel up to the critical heat flux conditions when the wall temperature increases sharply as the thermal load grows slowly. The experimental critical heat flux data obtained by Russian and foreign authors has been compared.
Writing Instructions at a University and Identity Issues: A Systemic Functional Linguistics Perspective
Authors: Kanwal Nagina , Amin Qadir Samina , Shaukat Kamran
Published: March 2021

In this paper, we explore the discoursal identity in the academic writing of a postgraduate student from the University of Pakistan where English is the medium of instruction as well as taught as a foreign language. The study aims to find out the extent and the specific ways dominant conventions and practices enable and constrain meaning-making. It also helps to identify the role of social and institutional goals in shaping the discoursal identity of students. To achieve our objectives, we have conducted a linguistic analysis of the student’s academic texts by using Systemic Functional Linguistics. The findings from the linguistic analysis of academic texts are quite significant because the lexico-grammatical and discoursal choices in the academic texts reflect their writer’s desired disposition and their orientation within academia and their socio-cultural setting. Thus they reveal the writer’s discoursal identity and his positioning and affiliation with the academic community. The findings of the study provide significant implications for the reconceptualization of writing instructions at universities, also they point to the need to employ emerging technologies in the writing instructions program while not ignoring the students’ identity issues.
Status and Trend of Research on the Funding and Management of Basic Research in China: An Analysis Based on Knowledge Maps of Core Journal Database of China National Knowledge Infrastructure in 1992-2019
Authors: Yang Yang , Zhu Xiangyu
Published: March 2021

This paper aims to clarify the current status, hotspots, historical evolution and development trend of the research on funding and management of basic research in China. Firstly, 736 relevant papers indexed during 1992-2019 in the core journal database of China National Knowledge Infrastructure (CNKI) were analyzed in details. Using the information visualization software CiteSpaceV5.6.R3, the institutional cooperation co-occurrence map, author cooperation co-occurrence map, keyword co-occurrence map, and keyword timeline view maps were plotted through content mining. The results show that: the research institutions in the research field of basic research funding and management have formed three core cooperation networks, and the institutions in Beijing attract the most attention; most of the prolific and active authors choose teamwork over independent research; the research topics mainly fall into four aspects of basic research: input, subjects, results, and talents; the research hotspots are in line with policies and demands, and evolve through three stages: exploration and gradual progress, adjustment and development, and expansion and acceleration. The research results open up a new direction for relevant studies, and provide a reference for innovative parties to implement basic research.
C19-SmartQ: Applying Real-Time Multi-Organization Queuing Management System Using Predictive Model to Maintain Social Distancing
Authors: Abdul Halim Syafnidar , Othman Mohd Hikmi , Buja Alya Geogiana , Abdul Rahid Nurul Najwa , Sharip Anis Afiqah , Md Zain Siti Maisarah
Published: March 2021

COVID-19 is a pandemic crisis that has introduced new norm to the world where we are not encouraged to be in 3C areas, namely crowded place, confined space, and close conservation. We must also ensure that we are at least one meter apart from one another at all time even while queuing. The queuing process can be seen at any organization that offer services. Adhering to the new norm can be a challenge for organization such as banks, hospitals, and government offices when the number of clients waiting in queue increases while in confined space.  On the client’s side, they must go through the queue process of obtaining a queue number ticket and then wait to be served in confined and sometimes crowded space every time they require a service.  Thequeue process will be repeated at different premise. This study proposes real-time multi-organizationsC19-SmartQ system which use predictive modelling to generate single or consecutive queue number tickets for any client requiring services from two different organizations located within the same building.  C19-SmartQsystemmanages queues thus administer social distancing and streamline queues to reduce waiting periods and improve service efficiency. To ensure operability of C19-SmartQ system, itwas tested on the functionality and web server speed performance. The web server speed performance results show that data transfer and web loading were stable since there was only an increase of 0.2 seconds or 0.08% as the number of users per session increases. In the future, the system can be designed to accommodate queuing for more organizations located within the same building.  Machine learning can also be integrated in the system to improve the predictive modelling based on current environment at each organization.
An Instrumental Assessment of Touch'n Go eWallet Mobile App
Authors: Hussain Azham , Mkpojiogu Emmanuel O.C. , Kamal Fazillah Mohmad , Wahab Rohazna binti , Che Meh Noor Halawati
Published: March 2021

This study assessed the instrumentality of Touch ’n Go eWallet mobile app at selected areas in University Malaysia Perlis (UniMAP) and Politeknik Tuanku Syed Sirajuddin (PTSS) Perlis, Malaysia, in July and August 2019. Fifteen staff from the two institutions was selected as participants. The purpose of the test was to assess the usability of the app and get user feedback to improve the instrumental quality of the application in order to meet user satisfaction and their experience. This report contains the participants’ feedbacks, task completion rates, ease or difficulty of task completion, time on task, errors, and recommendations for improvements. This study used 4 tasks to assess the instrumental quality of Touch ‘n Go eWallet mobile app. Overall, the outcome of the study revealed that the app is generally usable and instrumental to assisting users accomplish their electronic wallet goals. There is however some observed issues in the app that require fixing to enhance the instrumental quality of app.
Assisting Children with Autism Spectrum Disorder with Educational Mobile Apps to Acquire Language and Communication Skills: A Review
Authors: Hussain Azham , Mkpojiogu Emmanuel O.C , Okoroafor Pauline Chiamaka
Published: March 2021

This systematic literature review was set out to review available literature on autism spectrum disorder and educational mobile apps with the aim of investigating available educational mobile app and how teachers can utilize these apps in assisting autistic children in acquiring language and communication skills. In order to achieve the aim of the study, the researchers employed a systematic method of investigation. Fifty papers in the areas of autism, educational apps and teaching method for autistic children were downloaded. Twenty-six were carefully selected because of their relevance to the study. The papers were analyzed and the result showed that there are available educational apps that are effective in helping autistic children in acquiring language and communication skills.
L’accompagnement scientifique comme moteur d’innovation et de développement agricole au Gabon
Authors: Goff Jean-Louis Le , Nguema-Obame Roger
Published: March 2021

Cet article présente une recherche interdisciplinaire (sociologie, géographie, économie, agronomie) dont la finalité est d’appréhender de manière théorique et pratique un modèle de développement croisant innovation, expertise et accompagnement. Son objectif est d’analyser scientifiquement les dynamiques sociales, organisationnelles et économiques à l’œuvre dans le secteur agricole au Gabon en expérimentant leur mise en œuvre matérielle : production agricole innovante, formation de jeunes agriculteurs et techniciens, diffusion d’expertises diverses en gestion, en agronomie. Cette perspective permet de produire une vision critique et réflexive de l’Open science en tant que projet politique.
L’aménagement flexible de la classe : le point de vue d’enseignantes du primaire au Québec
Authors: Leroux Mylène , Bergeron Léna , Turcotte Sylvain , Deschênes Geneviève , Smith Jonathan , Malboeuf-Hurtubise Catherine , Riel Jessica , Bergeron Julie , Berrigan Félix
Published: March 2021

Bien que l’aménagement flexible de la classe ait connu un regain d’intérêt dans le milieu scolaire au cours de la dernière décennie, encore relativement peu de recherches se sont intéressées à cette pratique. Cette étude exploratoire trace un portrait des perceptions d’enseignantes quant à leurs motivations et inspirations à opter pour cette pratique, à leurs intentions et à leur manière de la mettre en œuvre, aux défis rencontrés, aux bénéfices perçus, ainsi qu’aux ressources et au soutien sur lesquelles elles ont pu compter. Pour ce faire, 27 enseignantes du primaire ont été interrogées en lien avec ces dimensions et 6 d’entre elles ont également participé à des entretiens semi-dirigés individuels. Les résultats indiquent que l’aménagement flexible de la classe pourrait favoriser la différenciation en permettant de mieux répondre aux besoins des élèves, ainsi qu’à ceux des enseignantes.
La différenciation, une réponse individuelle et locale à une institution scolaire traversée de tensions
Authors: Boucenna Sephora
Published: March 2021

L’école est fortement décriée par de nombreux acteurs, faisant apparaitre sa vulnérabilité d’institution au caractère fragmenté. Pour y faire face et assurer leur fonction de pédagogues, certains enseignants déploient des trésors de ressources. Parmi celles-ci, la différenciation occupe une place prépondérante, même si chaque acteur l’investit de manière singulière. Concept mobilisateur de l’action ou concept d’intelligibilité ? Nous avons pris le parti de ne pas traiter la « différenciation » comme un concept de recherche, mais comme une notion qui mobilise les acteurs dans des tâches et des manières d’agir qu’ils ne mettraient pas en œuvre s’ils ne rencontraient pas des obstacles non négligeables dans leur quotidien d’enseignants. A cet effet, nous avons interviewé dix-sept enseignants exerçant dans l’enseignement fondamental (3 à 12 ans), secondaire (12 à 18 ans) et supérieur non universitaire et universitaire. Ils ont été recrutés selon une logique d’opportunité, afin d’explorer, dans une approche subjective, les éléments de leur pratique révélant les indices des tensions larvées ou explicites qui traversent l’institution scolaire et qui font de l’école un espace stressant, inconfortable, voire générant de la souffrance.
Study on Soil Properties towards Formation of High Quality Agarwood Resin in Aquilaria crassna
Authors: Hamdan Mohd Syafik Mohamad , Ismail Mohd Azrul Hisham , Shaarani Siti Hajar Noor , Tajuddin Saiful Nizam
Published: March 2021

Agarwood has been used for its fragrance and medicinal properties in Asian culture for centuries. In recent years, agarwood gains its popularity in the west due to its usage in perfume formulation. Unfortunately its supply not meets the augmentation market demand. This is mostly because of depleting nature agarwood reservoir and lack of induction technique that can produce agarwood consistently in the plantation. In this study, we look into a case where artificial inducing technique successfully produced high quality agarwood. To assure its quality, agarwood chip was analysed by Gas Chromatography for its chemical profiles. Discovered compounds were identified as sesquiterpene group which also had been characterized as major agarwood compound listed on previous studies. Few compounds that are detected such as δ-cadinene (0.20%), jinkoh-eremol (22.09%), epi-α-cadinol (4.74%), agarospirol (3.75%) and others. Soil condition that contributes into this agarwood formation; soil analysis on physical properties, chemical properties and nutrients content of the soil have been analyzed. Based on the findings, soil condition is an important factor to successfully induced high quality agarwood.
Extraction and Characterization of Keratin from Chicken and Swiftlet Feather
Authors: Badrulzaman Sharifah Zafierah Syed , Aminan Aimi Wahidah , Ramli Aizi Nor Mazila , Che Man Rohaida , Wan Azelee Nur Izyan
Published: March 2021

Keratin is a durable and fibrous protein of hair, nails, horns, hoofs, feathers and the epithelial cells in the outermost layers of the skin. Keratin in animals mainly presents in vertebrates such as mammals, birds and reptiles including chicken and swiftlet. This study aims to characterize keratin extracted from chicken and swiftlet feathers. The extraction of the keratin performed using dimethyl sufoxide (DMSO) at high temperature. The extracted keratin from both samples were used for the characterization process using Bradford protein assay, CHNS analysis and Fourier-transform infrared (FTIR) spectroscopy. This study showed that keratin extract of swiftlet feather showed higher protein concentration (0.813 mg/mL) than keratin extract of chicken feather (0.646 mg/ml). The highest composition for keratin extract is hydrogen which are 4.97% for keratin extract from swiftlet feathers and 3.12% for keratin extract from chicken feathers. FTIR analysis exhibited that carboxyl groups and amino groups are presence in both keratin samples however, the protein value is higher in swiftlet feathers compared to chicken feathers. This study's outcome is significant in discovering keratin extract from swiftlet feathers containing high protein content due to the breakdown of disulfide bonds. Furthermore, this research is the first report on keratin characterization from swiftlet feathers that would be useful for high value future keratin study.
An Attempt to Develop Aerobic Granular Sludge in Continuous Airlift Reactors
Authors: Mohd Shafei Muhammad Syafiq , Jemaat Zulkifly
Published: March 2021

Recent advancement on biological wastewater treatment is via granular sludge technology. It is widely known that, aerobic granular sludge has been developed in a batch operation since its discovery. Yet, most of the wastewater treatment plant (WWTP) is operated in continuous mode. Now, the real challenge is how to adopt the granular technology while maintaining present operation mode of WWTP. Thus, this study attempts to evaluate the feasibility of developing aerobic granular sludge in continuous airlift reactors feed with two different substrates, namely glucose and acetate. Two identical airlift reactors (6 L) were employed and operated at room temperature (30°C). Prior to the substrate feeding, both reactors were inoculated with seed sludge obtained from a palm oil mill anaerobic pond. One of the reactors was fed with 2000 mg COD L-1 of glucose (ALR1) and the other reactor with 2000 mg COD L-1 of acetate (ALR2). The hydraulic retention time (HRT) and organic loading rate (OLR) for both reactors were maintained at 4 days and between 0.2 to 0.5 kg m-3day-1 respectively. Dissolved oxygen was maintained between 5.0 and 6.0 mg O2L-1 and supplied by air compressor. The reactor performance was monitored based on COD removal. Aerobic granules developed throughout the study period was evaluated based on granules size and morphology, sludge volumetric index (SVI30) and SVI5/SVI30 ratio analysis. Results showed that ALR1 demonstrated the formation of filamentous-type aerobic granules with most of the SVI30 average at 100 to 190 mL g-1. Ratio SVI5/SVI30 analysis was evaluated at 0.2 and 0.5. The largest granules size obtained during the experiment was about 600 μm on day-136 and average granules size obtained at 200 to 400 μm. ALR1 able to achieve 95% COD removal. For ALR2, round shaped aerobic granules were developed with average SVI30 from 100 to 1000 mLg-1. SVI5/SVI30 analysis indicated an average ratio between 0.7 and 0.9. The average granules size was between 30 to 50 μm and the largest was 78 μm on day-60. 90% of COD removal efficiency was obtained in ALR2. In conclusion, ALR fed with acetate had indicated better aerobic granules characteristics as compared to glucose fed reactor. Furthermore, the study demonstrated that to develop aerobic granules in continuous reactors is feasible.
The Effectiveness of Ni/Ce/Al2O3 Catalyst in the Extraction of Naphthenic Acids from Acidic Crude Oil
Authors: Aziz Nurul Hidayah , Shohaimi Norshahidatul Akmar Mohd , Che Harun Noraini Safar
Published: March 2021

Processing of petroleum crude oil with high total acid number (TAN) lead to corrosion problems in oil refinery equipment, storage, facilities and even reduces the performances of the oil. The purpose of this study is to overcome the corrosion problem in oil refinery by reducing the TAN in the oil to less than 1 mgKOH/g. A 2-methylimidazole in ethanol with the aid of Ni/Ce (10:90)/Al2O3 catalyst through the catalytic deacidification technique. The catalyst was prepared by using Incipient Wetness Impregnation (IWI) methods on alumina beads as catalyst support and calcined at 800°C, 900°C and 1000°C. Ni/Ce (10:90)/Al2O3 catalyst was characterized by using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction Spectroscopy (XRD) and Brunauer-Emmett-Teller (BET) to study physicochemical properties of the catalyst. The results shows that Ni/Ce (10:90)/Al2O3 catalyst successfully reduced TAN in crude oil to 0.50 from 4.22 mg KOH/g at 1000°C calcination temperature and catalyst loading of 0.39% (7 beads). XRD analysis proposed Al2O3 and CeO2 fcc was the active site for Ni/Ce (10:90)/Al2O3 catalyst. C-H alkanes stretching, -CH2- alkanes stretching and pure metal oxides stretching modes were detected on the catalyst at wavelength of 2952.49 to 2852.82, 1599.38, and 862.81 to 537.27 cm-1 respectively by FTIR analysis after catalytic deacidification process which indicates that there were impurities that have adsorbed on the catalyst surface. As a conclusion, the catalysts successfully reduced the TAN value of acidic crude oil to less than 1.00 mg KOH/g.
Influence of Molecular Weight on the Morphology and Structure of Electrospun Polyvinylidene Fluoride (PVDF)
Authors: Zahari Aminatul Sobirah , Mazwir Muhammad Hafiz , Misnon Izan Izwan
Published: March 2021

Polyvinylidene fluoride (PVDF) reveals outstanding properties such as lightweight, high flexibility and temperature independence material compared to other polymers. In this study, PVDF as a function of molecular weight was prepared by using an electrospinning method in order to study the influences of the molecular weight of the PVDF membrane on the morphology. Analytical techniques such as field emission scanning electron microscope (FESEM), Fourier transform infrared (FTIR) and X-ray diffraction (XRD) were used to characterize the electrospun PVDF membranes. FESEM was used for morphology characterization and also to measure the diameter of fibers while XRD and FTIR were employed to examine crystalline phase membranes. The lowest molecular weight has the smallest average diameter of fibers. Besides, a combination of both α-phase and β-phase crystalline was showed by XRD and FTIR results. This is because the crystalline phases and membrane morphology depend on the polymer molecular weight. In this research, it was found that the largest β-phase fraction for the electrospun PVDF membrane is 80.25 % with a molecular weight at 180,000 g/mol.
A Review of Shear Properties for Malaysian Tropical Timber in Structural Size
Authors: Mohd Puaad Muhammad Bazli Faliq , Ahmad Zakiah , Aziz Nurul Faiizin Abdul , Talip Adrina Rosseira Abu , Yasin Mohd Hanafie
Published: March 2021

In recent years, the studies on producing data on physical and mechanical properties of Malaysian timber specimens have evolved from small clear specimen to structural size specimen, where most of the research method was based on the American Standard Testing Manual ASTM D198. Numerous data regarding mechanical properties on structural size specimen have been produced through this method, such as bending and compression test. Unfortunately, studies on shear properties on structural size timber are very scarce. It has reviewed that the global timber researchers are focusing to produce data on shear properties of European timber species such as Oak, Spruce and Pine where both shear strength and shear modulus data were obtained from bending and torsion test. Furthermore, from the review of the existing literature, it is clear that there is no proper studies focusing on development of shear properties of Malaysian tropical timber, especially torsion test in accordance with EN 408:2010. Therefore, the aim of this study is to investigate the shear properties (shear strength and shear modulus) of Malaysian Tropical Timber in large size.
Analysis of Absorbance Patterns and Functional Groups of BIO-Dye (Ocimum sanctum) Based on pH Variations in the Wet and Dry Extraction Method
Authors: Supriyanto Edy , Dikayanti Antin , Andarini Novita , Kartikasari Henry Ayu , Qohhar Rosil , Sutjipto Agus Geter Edy
Published: March 2021

Bio-Dye is a dye derived from natural ingredients that have an important role in DSSC performance. This Bio-Dye is later in charge of absorbing sunlight entering the DSSC cells. Bio-Dye is a dye derived from natural ingredients that have an important role in the performance of the DSSC. This Bio-Dye is the one that will be in charge of absorbing sunlight entering the DSSC cells). One important key to know DSSC performance is to pay attention to the quality of the BIO-Dye. A good BIO-Dye can be seen by knowing the absorbance pattern and the function group of the dye its self. This research was conducted to determine absorbance patterns and functional groups based on pH variations in the wet and dry extraction methods contained in the Ocimum sanctum. The absorbance pattern was seen using a UV-Vis spectrophotometer and a functional group using FTIR. The chlorophyll pigment contained in the BIO-Dye (Ocimum sanctum leaf) was extracted using an ethanol solvent and added acetic acid to produce variations in pH values. The UV-Vis spectrometer measurement results showed the highest absorbance pattern was possessed by Ocimum sanctum dye in the dry extraction method and at natural pH (pH = 6.5). The peak absorbance they have is 648 nm, 614 nm, and 537 nm. The FTIR spectrum was obtained from Ocimum sanctum information containing the same functional groups when variations in pH values ​​were carried out in the wet and dry extraction methods. The functional groups are OH groups at wave number 3356.57 cm-1, CH at 2975.37 cm-1, C = O at 1652.50 cm-1, CN at 1383.81 cm-1, C = C at 880.25 cm-1, and CH absorbed at wave number 1087.78 cm-1. In general, it can be concluded that natural dye from Ocimum sanctum has a high absorbance in the visible light region and contains COOH compounds that can strengthen the bond of dye with TiO2 semiconductors so that Ocimum sanctum can be used as a dye in Dye-Sensitized Solar Cells (DSSC).
Fabrication and Characterization of Cold-Pressed and Sintered Aluminium - MWCNT Composites
Authors: Dhore Vilas Gulabrao , Rathod Walmik S. , Patil Kashinath N.
Published: March 2021

In the present article aluminium matrix composites were fabricated by cold pressing and sintering technique. Multi-walled carbon nanotube (MWCNT) with various weight percentage 0.5, 1.0, 1.5 and 2.0 were added as a reinforcement to aluminium (Al) matrix. A planetary ball mill was used for mechanical alloying and even dispersion of carbon nanotubes (CNTs) in aluminium matrix. Tin (Sn) with 1.0 weight percent was used in composite to incite the sintering. The sintering was carried out at 500°C inside a tube furnace in an argon atmosphere. The morphology and structure of CNT and Al-Sn-CNT composite was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. The effect of MWCNT reinforcement on microhardness and wear properties of Al-Sn-CNT composite was investigated. The hardness of composites was improved significantly with increase in CNT fraction. The reduction in the coefficient of friction and improvement in the wear resistance of the Al-Sn-CNT composite was noticed with the increase in percentage of CNTs in the composite.
Effects of Cytokinin in Enhancing the Multiplication of Vegetative Hylocereus polyrhizus
Authors: Ng Zhe Cheng , Shiekh Mahmud Siti Hamidah Radiyah , Tan Suat Hian
Published: March 2021

Hylocereus polyrhizus is a climbing vine cactus species that grows in tropical area. Recently, it has attracted the attention of public as it provides numerous benefits to humans in term of health especially for those who prioritize health over mostly anything. The objective of this research was to assess the effects of different type of cytokinins which were 6-Benzylaminopurine (BAP) and Kinetin in different concentration with combination of waste coconut water and sucrose on enhancing the in vitro multiplication of H. polyrhizus. It was found that BAP had higher effect in shoot multiplication than Kinetin as the highest number of shoots was produced at 3.67± 0.67 when supplemented with 3.0 mg/L of BAP whereas for Kinetin, it only produced 1.75±0.38 shoots and without cytokinin was 1.17±0.01. However, Kinetin had a slightly better effect in shoot elongation than BAP as Kinetin produced shoots with longer length than BAP. It was found that the longest length produced by Kinetin was 2.51±0.06 while BAP was 2.43±0.05 cm and without cytokinin was 2.18±.0.01.For the production of roots, low concentration of cytokinin in range 0.3 mg/L to 1.0 mg/L provides the best number of roots. In conclusion, addition of cytokinin has significant effect in enhancing the growth and multiplication of vegetative H. polyrhizus.
Trimalleolar fracture: The endless posterior malleolus fracture debate, to repair or not to repair?
Authors: Nasrallah Khalil , Einal Bathish , Shtarker Haim
Published: March 2021

Ankle fracture is one of the most common fractures presenting in the emergency department. The fracture varies from unimalleolar, bimalleolar or trimalleolar. Involvement of the posterior malleolus is common and ranges from small avulsions to large intraarticular fragments causing subluxation of the talus. If left untreated, the resulting step-off, comminution or posterior talar subluxation may lead to osteoarthritis and further disability. To date, no consensus exists regarding the management of posterior malleolus fractures in the set-up of trimalleolar fractures. In this review we provide an overview of the literature on the available treatment options for posterior malleolar fracture in the set-up of trimalleolar fractures.
Time's Up! Needed Cultural Changes in Athletic Training Education and Clinical Practice
Authors: Grove Destinee , Mansell Jamie , Moffit Dani
Published: March 2021

Context

Culturally competent care has been on the radar of peer health care professions for many years. The unique patient populations that athletic trainers work with lend us to be at the forefront of delivering truly patient-centered care. However, we have not yet appropriately incorporated this tenet of evidence-based practice.

Objective

To convey the importance of culturally inclusive care and education to athletic training clinical practice and educational programs. We also present a novel way to intertwine inclusivity in the classroom and the clinic in a way that is accessible at any point in one's cultural competence journey.

Background

Historically, cultural competence in athletic training education has focused on ethnicity and race. The students we teach and the patients we treat share a variety of cultures that are often forgotten yet need to be included for a more holistic approach.

Recommendation(s)

Athletic trainers and athletic training educators need to continue the journey toward delivering culturally inclusive care. This journey also needs to extend to the classroom, from the delivery methods of teaching to the way we interact with our students. Teaching priorities should include a focus on the cultures around and within our profession.
Macroseismic and landslide information on the 1663 moment magnitude (M) 7 earthquake, Charlevoix, Quebec
Authors: Lamontagne M , Locat J
Published: March 2021

The February 5, 1663, magnitude 7 Charlevoix earthquake occurred at approximately 5:30 p.m. local time (February 5, 1663, 22:30 U.T.). This earthquake is one of five known moment magnitude 5.5-7 events that occurred in the Charlevoix Seismic Zone (CSZ) between
1663 and the present. Due to the sparse population at the time, the exact position of the epicenter and the magnitude are still debated. The Charlevoix Seismic Zone is generally assumed as the epicentral region based on its historical earthquakes and its sustained lower magnitude earthquake
activity. Given that this earthquake occurred in the mid 1600's and far from the few existing towns, felt accounts are limited in number. Available historical documents reveal that it was felt by the then 2500 inhabitants of New France mostly concentrated in three towns (Quebec City,
Trois-Rivières, Montréal), and by other inhabitants of New England and New Holland.
The macroseismic information is augmented by landslides (subaqueous and terrestrial) and sedimentation events which likely were triggered by the 1663 earthquake. Most of these mass movements are dated using either C14 or sedimentation rate methods. These mass movements are used as proxies to
estimate both the magnitude of the earthquake and its epicentre.
This Open File Report presents the macroseismic information and its ratings on the Modified Mercalli Scale for a total of eight locations for Canada. For each 2 locality, the felt information is rated on the Modified Mercalli intensity (MMI) scale and tabulated in a Microsoft Excel sheet. The text
of some of the newspaper accounts are reproduced. The Open File also provides a GoogleEarth kmz file that allows the felt information reports to be viewed in a geographic visualization tool.
Resolution of the Oberwolfach problem
Authors: Glock Stefan , Joos Felix , Kim Jaehoon , Kühn Daniela , Osthus Deryk
Published: March 2021

The Oberwolfach problem, posed by Ringel in 1967, asks for a decomposition of

K_{2n+1}

into edge-disjoint copies of a given 2-factor. We show that this can be achieved for all large

n

. We actually prove a significantly more general result, which allows for decompositions into more general types of factors. In particular, this also resolves the Hamilton–Waterloo problem for large

n

.
Numerical Study of the Stabilization of 1D Locally Coupled Wave Equations
Authors: Gerbi Stéphane , Kassem Chiraz , Mortada Amina , Wehbe Ali
Published: March 2021

In this paper, we study the numerical stabilization of a 1D system of two wave equations coupled by velocities with an internal, local control acting on only one equation. In the theoretical part of this study [Z. Anal. Anwend. 40 (2021)(1), 67–96] we distinguished two cases. In the first one, the two waves assumed propagate at the same speed. Under appropriate geometric conditions, we had proved that the energy decays exponentially. While in the second case, when the waves propagate at different speeds, under appropriate geometric conditions, we had proved that the energy decays only at a polynomial rate. In this paper, we confirmed these two results in a 1D numerical approximation. However, when the coupling region does not intersect the damping region, the stabilization of the system is still theoretically an open problem. But, here in both cases, we observed an unpredicted behavior: the energy decays at an exponential rate when the propagation speeds are the same or at a polynomial rate when they are different.
Global Strong Solution of Nonhomogeneous Bénard System with Large Initial Data and Vacuum in a Bounded Domain
Authors: Zhong Xin
Published: March 2021

We study an initial boundary value problem of two-dimensional nonhomogeneous Bénard system with nonnegative density. We derive the global existence of a unique strong solution. In particular, the initial data can be arbitrarily large.