bluuebunny/crossref_metadata_2025 huggingface dataset:
The role of the pediatrician in the formation of the dentition and in the preservation of children's dental health
Authors:   Danylo Halytsky Lviv National Medical University, Ukraine, Malska A.A. , Dub R.Iu. ,   CNE «Lviv Regional Children’s Clinical Hospital «OKHMATDYT», Ukraine, Pryshko Z.R. ,   Danylo Halytsky Lviv National Medical University, Ukraine, Solonko H.M. ,   Danylo Halytsky Lviv National Medical University, Ukraine
Published: April 2023

Purpose - to analyze the role of the pediatrician in the formation of the dentition and the preservation of dental health in children, reviewing world research on this topic. The data of scientific literature on the awareness of pediatricians in the prevention of children's oral health diseases and timely referral to a pediatric dentist are analyzed. Untreated tooth decay is known to negatively affect a child's overall health and well-being, causing pain, impairing the ability to bite and chew, and thus affecting weight gain and growth, self-esteem, and communication skills. Chronic pain and discomfort caused by dental caries also negatively affects cognitive development and is associated with school absenteeism and lack of concentration. Since the youngest children visit pediatricians much more often than dentists, it is very important that pediatricians have the appropriate knowledge of the development and progression of caries, the principles of its prevention, and ways to maintain and improve the child's oral health. The cooperation of a pediatric dentist, parents and pediatrician is a three-way process for the sake of a child's oral health. Most studies have shown that pediatricians have insufficient knowledge of caries and its transmission, and that pediatricians have limited knowledge and understanding of the initial clinical signs of caries, the recommended age for the first visit to the dentist, the etiology of caries, and recommendations for the use of fluoride toothpastes. No conflict of interests was declared by the authors.
Langerhans cell histiocytosis in a child with multisystemic lesions associated with infected poliomyelitis and SARS-CoV-2, features of diagnostics. Clinical case
Authors:   СNE of Lviv Regional Council «Western Ukrainian Specialized Pediatric Medical Centre», Dorosh O.I. ,   Danylo Halytsky Lviv National Medical University, Ukraine, Petronchak O.A. ,   PLC «Western Histology Laboratory», Lviv, Ukraine, Masynnyk Yu.S. ,   Center for Medical Innovations NOVO, Lviv, Ukraine, Guley R.V. ,   PLC «Western Histology Laboratory», Lviv, Ukraine, Dudash A.P. ,   PLC «Western Histology Laboratory», Lviv, Ukraine, Fesh N.O. ,   PLC «Western Histology Laboratory», Lviv, Ukraine, Tymchyshyn S.M. ,   СNE of Lviv Regional Council «Western Ukrainian Specialized Pediatric Medical Centre», Lytvyn H.O. ,   Danylo Halytsky Lviv National Medical University, Ukraine
Published: April 2023

Langerhans cell histiocytosis (LCH) is an abnormal clonal proliferation of Langerhans cells. The prognosis varies depending on the form of the disease and organ damage. Any organs and systems can be involved in the pathological process in various combinations. A poor response to standard therapy and an unfavorable prognosis are characteristic of patients with a multisystem form of LCH and involvement of organs at risk. Skin lesions are a classic sign of LCH. Purpose - to describe the complexity and duration of diagnosis of LCH with multisystem damage in a boy aged 2 years and 2 months, infected with poliomyelitis and coronavirus. Clinical case. The first clinical manifestations of LCH in the child debuted with an eczematous-seborrheic rash on the scalp with spread to the limbs and trunk. The child was treated for toxicoderma, hemorrhagic vasculitis at the place of residence for 6 months. The boy lost 1.5 kg of body weight in 1 month. At the time of hospitalization, seborrheic-eczematous rashes on the skin with a hemorrhagic component, trophic-inflammatory changes in the nails of the hands, signs of protein-energy deficiency, stomatitis, gingivitis, hepatosplenomegaly, polyserositis, diabetes insipidus, osteolytic foci of the frontal bones were found. Results of the tests: anemia, thrombocytopenia, hypoproteinemia and hypoalbuminemia, coagulation disorders. The patient had the onset of lower flaccid paraparesis, muscle hypotonia. The boy was diagnosed with a number of infectious complications, including poliomyelitis (a derivative of vaccine poliovirus type 2), COVID-19. The child received LCH-III cytostatic therapy with a positive effect. The research was carried out in accordance with the principles of the Helsinki Declaration. The informed consent of the patient was obtained for conducting the studies. No conflict of interests was declared by the authors.
A clinical case of infantile papular acrodermatitis or Gianotti-Crosti syndrome
Authors:   Ivano-Frankivsk National Medical University, Ukraine, Semianchuk V.B. , Synoverska O.B. ,   Ivano-Frankivsk National Medical University, Ukraine, Tsymbalista O.L. ,   Ivano-Frankivsk National Medical University, Ukraine, Vovk Z.V. ,   Ivano-Frankivsk National Medical University, Ukraine, Bobrykovych O.S. ,   Ivano-Frankivsk National Medical University, Ukraine
Published: April 2023

Gianotti-Crosti syndrome is a kind of infectious exanthem. That is characterized by the appearance of monomorphic papules, which colour may be from the skin colour to pink-red ones. The most typical location is on the face, buttocks and extensor surfaces of the limbs. Over time, the rash disappears spontaneously and the medical treatment becomes symptomatic. Currently, the pathophysiological changes are not still thoroughly studied. It is clear that the syndrome represents an immunological response to the previous viremia and bacteraemia; perhaps, it is the delayed-type hypersensitivity reaction. Purpose - to acquaint doctors with criteria of the papular acrodermatitis for a timely diagnostic and a correct treatment strategy. Clinical case. There was a described clinical case of Gianotti-Crosti syndrome in a child of 2. The parents had complained about rashes on the face, limbs, buttocks for 6 weeks. The severe restlessness and itching of the skin had been present. During the whole time, the child was examined by various specialists. Alternative diagnoses were: an atopic dermatitis, a food allergy, a worm infestation. The child was prescribed local zinc-containing agents, systemic and local glucocorticosteroids, antiviral drugs, antibacterial therapy, antihistamines, sorbents, probiotics and a three-time course of deworming in the process of the treatment. The treatment have not had a positive therapeutic effect. Conclusions. Gianotti-Crosti syndrome is most common in childhood. At present, we consider it a self-limited disease that does not require specific treatment. Recent studies proved that the syndrome is more commonly associated with a variety of viral and bacterial pathogens. However, insufficient knowledge of papular acrodermatitis may lead to groundless and continuous examinations and treatment of children. The research was carried out in accordance with the principles of the Helsinki Declaration. The informed consent of the patient was obtained for conducting the studies. No conflict of interests was declared by the authors.
Identification of Panax spp. in the Northern Vietnam based on ITS-rDNA sequence analysis
Authors: Viet Thanh Tran Thi , Ngoc Bon Trinh , Van Truong Do , Quang Tuyen Pham , Van Luong Hua , Van The Pham , Ke Long Phan
Published: April 2023

In order to accurately identify ginseng species (Panax spp.) that grow naturally in some Northern provinces of Vietnam, we collected 30 natural ginseng samples and used nuclear genetic region (ITS-rDNA) for current analysis. The success rate for nuclear genomic region PCR (ITS-rDNA) amplification is 100%. The bidirectional sequence read success rate obtained from the PCR product was 100%, with a nucleotide sequence length of 588 bp. Based on the analysis of ITS-rDNA region results, the samples of ginseng species from Tuyen Quang and Cao Bang provinces have a close relationship with Panax notoginseng (MLBS = 100%), while the samples of ginseng species from Ha Giang and Yen Bai provinces have a close relationship with P. stipuleanatus (MLBS = 99%). As the results, the ginseng samples from Tuyen Quang and Cao Bang provinces were identified as Panax notoginseng and the ginseng samples from Ha Giang and Yen Bai provinces were identified as Panax stipuleanatus. The obtained result also recorded new distribution areas of P. notoginseng in Tuyen Quang and Cao Bang provinces. Furthermore, we successfully registered the nuclear nucleotide sequences of these two Panax species on GenBank with 24 codes (from OM190408 to OM190410, from OM213014 to OM213030, and from OK376138 to OK376141).
Transient expression and purification of S2 protein from porcine epidemic diarrhea virus in plants
Authors: Ho Thuong Thi , Trinh Vy Thai , Hoang Hang Thi Thu , Pham Ngoc Bich , Chu Ha Hoang
Published: April 2023

Porcine epidemic diarrhea (PED), caused by the Porcine epidemic diarrhea virus (PEDV), is an acute, highly contagious disease of pigs of all ages, especially piglets under one week old, with the mortality rate reaching 95–100%. Developing an effective vaccine against PEDV in Vietnam is urgent. Spike protein containing S1 and S2 subunits is considered the main target for vaccine development, and the S2 subunit contains immunodominant neutralizing epitopes of PEDV. To date, the expression of S2 protein in plants has not been reported and evaluated. In this study, the gene encoding the S2 subunit of a PEDV strain belonging to genotype 2a was amplified, sequenced, and inserted in a pRTRA vector containing the GCN4pII (pII) motif. The plant expression cassette containing S2-pII was then inserted into the pCB301 vector. The Agrobacterium tumefaciens harboring the pCB301-S2-pII vector was transformed into Nicotiana benthamiana leaves via agroinfiltration. The accumulation level of S2-pII protein in tobacco leaves was semi-quantified by Western blot, accounting for approximately 86.7 mg/kg of fresh leaves and 1.47% total soluble protein, which was 294-fold higher than the accumulation level of S1-pII protein in our previous publication. S2-pII protein was successfully purified by immobilized metal affinity chromatography (IMAC). The oligomeric state of S2-pII protein was characterized by size exclusion chromatography (SEC). The S2-pII protein was determined to be a multimer protein with a high molecular weight. These results are the basis for more extended studies to develop a plant-based S2 vaccine against PEDV infection.
Implementation of verbal and written feedback classroom practices by teachers
Authors: Gashi Shatri Zamira , Zabeli Naser
Published: April 2023

Teachers use feedback to modify student thinking or behaviour to improve their learning. In order for students to achieve better, teachers must use different strategies and ways of teaching. In this article we reflect on the practical application and impact that written and verbal feedback have on learners. Through the research reported on here we aimed to contribute to reflection about different concrete feedback models that are helpful to teachers and students. Seventy-four teachers of the curriculum area, society and environment (civic education, geography and history), in urban schools (n = 39) and rural schools (n = 35) from 10 lower secondary schools answered the questionnaire. The results show that teachers provide students with written and oral feedback and that there is no significant difference in the application by teachers in urban and rural schools, nor among teachers who teach subjects in the curriculum area, society and environment. We recommend that teachers receive continuous training on how to use formative assessment techniques.
Syryjski konflikt i jego wpływ na sytuację w Europie
Authors:   Wyższa Szkoła Bankowa w Gdańsku, Giedz Maria
Published: April 2023

The Arab Spring, which turned into a revolution, or rather a civil war in Syria caused a tragic, yet interesting configuration of the international political arena. This seemingly small, insignificant country in the Middle East pulled the most important powers of the world in to its interiour conflicts. Syria has become the key to the Middle East. It is a very colorful country in every way: ethnic, religious, cultural, landscape… and the country in which the Middle East countries and world powers and international terrorist organizations want to pursue their interests. They are so contradictory interests that led to an absurd war in which everyone is fighting against everyone. There has therefore been a confrontation on several levels, such as political: between the United States and Russia; religious: Christians–Muslims, as well as within Islam: Sunni–Shia, or Saudis and the Persians; business: where, for example, the role of the corridor between the Mediterranean Sea and Iraq it is taken by Turkey, it is a confrontation between the Ottomans and the Persians. Due to this almost 3 million external emigration takes place – not to mention the more than 10 million internal migration – and simutlaniously the influx of refugees not only to neighboring countries but also to Europe, mainly Western Europe. On the political scene the new players are reinforcing themseves namely, the Kurds. A new division of the Middle East is being created of which, the future is difficult to predict.
Źródła i historiografia badań zdolności miasta Lwowa do obrony w XIV–XVIII wieku
Authors:   Narodowy Uniwersytet „Politechnika Lwowska”, Biłuszczak Tatiana M. , Terski-Szełomencew Światosław W. ,   Narodowy Uniwersytet „Politechnika Lwowska”
Published: April 2023

The study analyzes the works of Ukrainian and foreign researchers who have studied the question ability to defend the city of Lviv in the fourteenth and eighteenth centuries. The authors characterize the main types of sources and the scientific contribution of researchers in the accumulation of knowledge in the historical study of the problem of defense of the city during medieval times.
Image of a Chinese Revolutionary in the Era of the Civil War in the Far East: An Ideological Aspect (Based on the Novel My Great Brother by Ilya Chernev)
Authors:   Blagoveshchensk State Pedagogical University, Blagoveshchensk, Zalesskaya Olga V. , Orobii Alena V. ,   Blagoveshchensk State Pedagogical University, Blagoveshchensk
Published: April 2023

The aim of this interdisciplinary article is to analyse the image of a Chinese character, as well as reflect the historical facts of the presence of the Chinese in Russian fiction. The article focuses on the ideological context. The authors refer to My Great Brother (1954), a historical and revolutionary novel by Ilya Chernev. The novel highlights the main stages of the revolutionary struggle of the Amur and Trans-Baikal proletariat. Most of the key characters in the novel are Chinese people. In the article, following H. Gьnther, the authors single out four diverse characters, the Chinese, that reflect the participation of foreign revolutionaries during the civil war: a proletarian, a warrior, a victim, and a politician. The “historical” component of the article confirms that workers who were subjects of other states and stayed on the territory of Russia were recruited into armed formations to fight counter-revolutionary forces, taking an active part in the partisan movement, and supplying the partisans with food, medicines, and ammunition. The article identifies the reasons why the Chinese joined the revolutionary associations: liberation from exploitation, socialisation, but at the same time, the ideological instability of the Chinese revolutionaries due to the motley social composition and poor knowledge of the Russian language. The article discusses the artistic means Chernev employs to portray the Chinese characters. It is proved that the novel is an example of a work commissioned by the state. Even though the novel My Great Brother has not gained fame, its value is determined by the material itself underlying its artistic canvas. The participation of Chinese citizens in the civil war remains one of the little-studied topics of Russian history, and in literature, the novel My Great Brother is the only work of fiction on this topic.
Investigación postcualitativa: aportes críticos desde el postestructuralismo feminista
Authors: Olivares-Aising Daniela , Mayorga Rojel Alberto Javier
Published: April 2023

Resumen: El artículo tiene como propósito realizar un recorrido por el desarrollo de las epistemologías feministas, cuyas contribuciones a las ciencias sociales han transitado desde la exposición del sesgo androcéntrico de sus investigaciones, el rechazo a las nociones de objetividad y neutralidad de los métodos empíricos tradicionales, hasta exponer los sistemas de poder que crean y recrean los conceptos utilizados por la ciencia en un sistema social y político particular. Si en un primer momento fueron las mujeres el principal objeto de estudio del feminismo, su interés se ha desplazado a otros marginados, indagando sobre las condiciones de posibilidad que mantienen sociedades profundamente desiguales. Se revisan tres corrientes de epistemologías feministas, con énfasis en el postestructuralismo feminista por sus contribuciones en la investigación postcualitativa postcartesiana.
Flora of Pernambuco, Brazil: Ipomoea (Convolvulaceae)
Authors: Delgado-Junior Geadelande Carolino , Costa Swami Leitão , Staples George , Buril Maria Teresa
Published: April 2023

Abstract Ipomoea L. is the largest genus in Convolvulaceae with approximately 150 species reported from Brazil, more than 50% of which are from the northeastern region of the country. The genus is represented by 48 species in Pernambuco state, occurring in Atlantic Forest and Caatinga vegetation as well as areas impacted by human activities. We present here an identification key, photographic documentation, taxonomic comments, and the geographical distributions of species in Pernambuco. New records of Ipomoea cearensis O’Donell, I. hirsutissima Gardner and I. squamosa Choisy for the state are reported.
Terapia ocupacional e trabalho: desafios e perspectivas de uma prática emergente durante e após a pandemia da Covid-19
Authors: Rodrigues Daniela da Silva
Published: April 2023

Resumo Este ensaio discute as possibilidades de intervenção da terapia ocupacional no campo do trabalho em período pandêmico, bem como apontar os desafios e perspectivas de atuações pós-pandemia. As intervenções foram discutidas a partir de três estágios: i) preparação pré-pandemia; ii) estratégias de preparação durante a pandemia; iii) recuperação pós-pandemia, considerando os níveis micro, meso e macroestruturais, a partir da perspectiva de uma prática centrada na pessoa e no ambiente de trabalho. A atenção às (in)capacidades laborais e a atuação no processo de retorno ao trabalho foram consideradas as principais intervenções do terapeuta ocupacional, articuladas com os diversos atores, instituições, serviços e entidades de classe, de forma a ampliar as ações e promover uma rede de atenção integrada. As novas configurações do trabalho resultantes da inovação tecnológica ampliaram o diálogo interdisciplinar da terapia ocupacional com o campo do trabalho. Espera-se contribuir com reflexões teóricas para pensar a prática profissional e o fortalecimento desse campo na contemporaneidade.
INVESTIGATION ON IMPACTS OF ELLIPTICAL DUCTS ON MACROSCOPIC SPRAY CHARACTERISTICS OF DUCTED FUEL INJECTION
Authors: Li Feng , Wang Ziman , Lee Chia-Fon
Published: April 2023

To study the influence of ducts other than circular shapes on spray characteristics of ducted fuel injection (DFI), experimental and simulation methods were used to study the impacts of elliptical ducts on DFI macroscopic spray characteristics. Two elliptical ducts, small and large, were used, with a circular duct for comparison. The small elliptical duct had the same hole cross-sectional area as the circular duct, and the large elliptical duct had a larger cross-sectional area. The DFI spray configuration with the elliptical duct promoted the axial dispersion and weakened the radial dispersion of spray with respect to free spray. Different spray-duct interactions caused differences in spray characteristics, manifested in changes in velocity field and pressure field. The spray velocity field of the circular duct had the best effect on promoting spray dispersion, followed by the small elliptical duct, and finally by the large elliptical duct compared to that of free spray. Furthermore, the pumping effect caused by the pressure differences between inside and outside the duct promoted the thorough mixing of spray and ambient gas inside the duct. From the radial velocity of ambient gas flowing to spray around the duct inlet, the pumping effect of the circular duct was the strongest, followed by the small elliptical duct and finally by the large elliptical duct.
Modal synthesis of controllers by a polynomial method for automatic control systems with excessive dimension of the control vector
Authors:   Novosibirsk State Technical University, Russian Federation, Voevoda Alexander A. , Shipagin Victor I. ,   Novosibirsk State Technical University, Russian Federation
Published: April 2023

When using polynomial methods of synthesis of multichannel regulators, there is a need for polynomial matrix calculus. However, when using this method, objects with the number of output channels equal to the number of input channels are mainly considered. This is necessary for the convenience of solving a system of linear algebraic equations in matrix polynomial computation. At the same time, a fairly large number of real technical systems have an unequal number of input and output channels. At the same time, the issue of the synthesis of generators by the polynomial method for multichannel objects with an unequal number of input and output impacts has not been worked out sufficiently deeply. One of the special cases of such systems can be considered systems with excessive dimension of the control vector. Within the framework of this work, examples of such systems and the purposes of their use are given. An illustrative example of a linear model of an unstable object with three channels for input action and two channels for output action is given. It is necessary to achieve certain quality indicators of the output vector quantity, while the control is carried out in the feedback of the system and is summed up with the input effect. The simplicity of the system under consideration is connected with the convenience of demonstrating on this example a modal synthesis method using a polynomial matrix decomposition of the transfer functions of an object and a controller for such a class of objects. In accordance with the recommendations presented in the algorithm for synthesizing regulators for objects with a non-square matrix transfer function, to solve the problem of synthesizing a regulator for systems with an excessive dimension of the control vector, the transfer function of the control object is represented as a right polynomial matrix decomposition, and the regulator is represented as a left one. During the demonstration of the example of the algorithm, some clarifications and edits are proposed in it.
MECHANICAL AND METALLURGICAL PROPERTIES OF FRICTION-STIR-WELDED AISI 304 STAINLESS STEEL
Authors: Govindaraj Sundar raju , Karuppa Sivakumar
Published: April 2023

Friction stir welding of AISI 304 stainless-steel sheets was successfully carried out with a tungsten-alloy (W+La2O3) tool and the effect of the tool rotational speed on the microstructure and mechanical properties of the joints were evaluated. 3-mm-thick plates were friction-stir welded at various rotational speeds of 600–1000 min–1 and a constant welding speed of 40 mm/min with a constant axial load of 15 kN. Defect-free joints were produced at 800 min–1 and 900 min–1, indicating a proper plastic flow of the material and ensuring adequate heat generation during welding. Tensile, Charpy impact, compression and microhardness tests were performed to evaluate the joint mechanical properties. The microstructural behavior of the welded and base-metal samples was examined with optical microscopy and scanning electron microscopy. According to the mechanical results, the welded material has a higher yield strength than the base metal due to the grain refinement and work hardening effect in the stir zone. FSW welds have a higher hardness than the base metal due to the high density of dislocations and continuous dynamic recrystallization. The joints also exhibit acceptable impact toughness. Finally, the EDS analysis confirms that there is no secondary-phase formation in the weld zone of the fabricated material.
UTILIZATION OF SLAG POWDER AND RECYCLED CONCRETE WASTES IN REACTIVE POWDER CONCRETE
Authors: N Sakthieswaran , Shiny Brintha G.
Published: April 2023

Using recycled wastes and industrial by-products in construction materials has become mandatory to conserve the natural resources and manage waste-disposal environmental problems. This experimental work investigates the workability and strength properties of reactive powder concrete (RPC), utilizing slag powder and finely ground recycled concrete waste as the partial substitutes for cement and quartz sand, respectively. The results for the slump flow, flexural strength, compressive strength, split-tensile strength were analysed for varying contents of the recycled concrete waste in RPC, i.e., (0, 5, 10, 15, 20, 25 and 30) % and a constant slag-powder addition of 20 %. Furthermore, water absorption of the hardened specimens of 28 d of curing was also examined. The results indicated a rise in the water absorption and reduced workability with the increase in the content of recycled concrete in RPC. This was due to porous inter-particle voids in recycled concrete wastes. The strength properties of RPC exhibited superior performance for the substitution of 15 % of quartz sand with recycled concrete waste. A low water-cement ratio and a steel-fibre addition to RPC play an important role in the strength development and durability properties of RPC.
Systematic Review of Mediatization of Politics in Southeast Asia
Authors:   Universiti Kebangsaan Malaysia, KHO SUET NIE , ZAWAWI JULIA WIRZA ,   Universiti Putra Malaysia
Published: April 2023

Mediatization of politics refers to the meta-process by which political institutions are highly dependent and influenced by the usage of media in political processes. In the early 2000s, research was heavily pioneered by scholars from Western World. For the past decade, scholars from the Southeast Asian region have explored and used the concept in understanding the relationship between media and political institutions in their respective countries. However, there is no cohesive systematic review on research that has been done on how mediatization of politics is being constructed in Southeast Asian context. This is crucial to determine mediatization of politics claims as the new paradigm of media studies holds true in the context of Asian political systems. Therefore, the present article conducted a systematic literature review on mediatization of politics in the Asian region. This study integrated different research designs and the review was based on PRISMA 2020 (Preferred Reporting Items for Systematic and Meta Analysis 2020). From 45 articles initially screened, 9 articles were chosen for the final systematic review. Four themes emerged from the systematic review, namely a) democratization, b) disinformation, c) religious populism and d) nationalism. The results showed that in most SEA countries, political actors are embracing the high dependency of media, whether it is the mainstream media or the digital media. Along with the mediatization, comes positive and negative consequences that are different according to the history of the countries. Future scholars should focus on expanding and building the systematic review in different regions. Keywords: Systematic review, mediatization of politics, Southeast Asia, democratization, political institutions.
Polycaprolactone/Chlorophyllin Sodium Copper Salt Nanofibrous Mats Prepared by Electrospinning for Soft Tissue Engineering
Authors:   Research Centre for Sustainable Process Technology, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Aiman Zulkifli Muhammad Zikri , Kamarudin Nur Hidayatul Nazirah ,   Research Centre for Sustainable Process Technology, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Nordin Darman ,   Research Centre for Sustainable Process Technology, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
Published: April 2023

This study examined the process of synthesising biodegradable nanofibres made up of polycaprolactone (PCL) and chlorophyllin sodium copper (CSC) through electrospinning for scaffolding in tissue engineering. Scaffolds provide a platform for cell regeneration for repairing damaged human tissues or organs. However, the issue lies in developing scaffolding that will provide a favourable environment for cell attachment and proliferation. One way to address this concern is to add CSC, which has been widely used in biomaterial applications, to the nanofibres. The structure and morphology of the nanofibres in this research were determined by using a scanning electron microscope (SEM), and their chemical properties were tested by using Fourier-transform infrared spectroscopy (FTIR). Moreover, the diameter and adhesive force of the nanofibres were investigated by using an atomic force microscope (AFM). The SEM examination revealed that the PCL/CSC nanofibres lost their fibrous structure, and the FTIR results proved that the nanofibres synthesised by electrospinning still consisted of PCL and CSC. The AFM examination showed that the diameter and adhesive force of PCL/CSC nanofibres were less than those of PCL nanofibres. This outcome resulted from the CSC’s inability to generate fibres on its own. Furthermore, its noncrystalloid structure prevented it from providing inner enhancement for PCL nanofibres. Hence, further studies are needed to ensure that PCL/CSC nanofibres can be used as an innovative type of scaffolding to provide an appropriate environment for living cells.
Development of Filtration System for the Collection of Soaking Water during Bedak Sejuk Preparation
Authors:   Chemical Engineering Programme Research Centre for Sustainable Process Technology (CESPRO) Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Ibrahim Nurhasniza , Tan Kofli Noorhisham ,   Chemical Engineering Programme Research Centre for Sustainable Process Technology (CESPRO) Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia
Published: April 2023

“Bedak Sejuk” or fermented rice powder is a traditional cosmetic product used by locals that is made from fermented rice. To start the process, the rice grains are soaked in water at 1:1 (w:v) ratio and continuously soaked until the rice gains fully dissolved into flour paste slurry. The soaking water was discarded at end of the fermentation process although it is believed valuable active components still exist in the water. Thus, the aim of the present study is to develop filtration system to collect the soaking water and to analyze active components presence. Local rice grains were soaked in the water in a container and within 14 days interval, the soaking water was replaced. The soaking water collected was then filtered using muslin cloth, followed by membrane filter size of 0.45 and 0.20μm. The filtered soaking water was analyzed for amino acid analysis using HPLC. Sample (0.1 ml) was poured onto the nutrient agar plate for microbial growth to determine the effectiveness of the filtration system. Based on these observations, it can be concluded that the rice soaking water during bedak sejuk preparation content were rich in amino acids (15 types of amino acids detected) with the highest concentration were lycine, glutamic acid and arginine – 0.11, 0.12 and 0.16% respectively. After the filtration using 0.20μm, no microbial growth detected suggested that it can be applied directly onto the skin as organic cosmetic product that benefits the skin.
Effects of Organic Solvent and Temperature on the Extraction of Lutein from Scenedesmus sp Biomass
Authors:   Institute of Bioproduct Development (IBD), Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Keat Long Low , Ahmed Iqbal ,   Department of Mechanical Engineering, Faculty of Engineering, King Abdulaziz University, Idris Ani ,   Institute of Bioproduct Development (IBD), Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
Published: April 2023

Lutein is a valuable bioactive compound that has various industrial applications. In nature, lutein is a yellow coloured isoprenoid polyene pigment, being produced by many photosynthetic organisms. With regard to Scenedesmus sp as the studied organism, this study aims to investigate the efficiency of microalgae-derived lutein extraction process. Repetitive solvent extraction method had been examined with four different organic solvents under different treatment temperatures for their lutein extraction effectiveness. Results showed that diethyl ether was the most effective organic solvent to extract lutein as compared to acetone, ethanol and dichloromethane. Under the extraction temperature of 60oC, diethyl ether was able to extract a total of 14.61 ± 0.31 mg/g of lutein from microalgae biomass. All the studied extraction treatments showed that lutein content in the extractants decreased as the number of extraction repetitions increased. By increasing the extraction repetition to 7 cycles using diethyl ether, treatment temperature at 60 °C resulted in a total of 16.07 ± 0.26 mg/g of lutein being extracted. Therefore, by selecting the most suitable organic solvent in lutein extraction, higher extraction treatment temperature shall provide sufficient energy required for the extraction process, thus further enhancing the overall extraction performance.
Bacterial Cellulose as a Potential Hard Gelatin Capsule
Authors:   Research Centre for Sustainable Process Technology,  Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Abd. Rahman Norliza , Kamarudin Nur Syafiqah ,   Research Centre for Sustainable Process Technology,  Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Esa Faezah ,   Research Centre for Sustainable Process Technology,  Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Kalil Mohd Sahaid ,   Research Centre for Sustainable Process Technology,  Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Kamarudin Siti Kartom ,   Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia
Published: April 2023

Matured coconut water is considered as an industrial waste where about 5.3m3 of this solution was discarded everyday especially in the coconut processing industry. An improper disposal process can cause environmental pollution especially to nearest river of processing industry. Despite all the advantages of bacterial cellulose (BC) over plant cellulose, its production is relatively expensive process primarily due to the low productivity and expensive culture medium. Thus, coconut water can be used as a medium for fermentation bacterial cellulose and the production cost can be reduced up to 50 to 60%. Acetobacter xylinum 0416 is often used in industry because they can be produced large quantity of BC. There are many applications of BC in industries such as in the food industry, pharmaceutical industry, textiles and etc. However, this study only focuses on the characteristics of hard gelatin capsule (pharmaceutical industry) and BC. This is because, in market there are about 80-90% hard gelatin capsule are non-halal and this situation cause very high demand of halal hard gelatin capsule especially in Islamic countries. This study focus on determination of optimum condition for BC production by manipulation of variable with a certain pH range which is (4-6), the incubator temperature (28-32°C), and time of fermentation (3-7 days). Comparison of BC and hard gelatin capsule properties were made through FESEM, XRD and FTIR analysis. Study found that optimum BC was obtained about 2.28 g/L at 32°C, in pH4 for 7 days fermentation period.
From a Native Daughter’s Native Daughter — On Lessons Learned from Kumu Haunani
Authors: Borja-Quichocho-Calvo Kisha
Published: April 2023

This article is from a Native daughter’s Native daughter. Interspersing poetry and prose, I share some of the lessons I learned from Kumu Haunani-Kay. I also discuss how her activism, teaching, and written work have served as contributions to her role not only as Kumu but also as a Native daughter, who essentially mothered other Native daughters of Oceania—such as myself, a Chamoru woman from Guåhan—who now continue the work that she so bravely and so fiercely started. Her life and contributions taught us of our responsibility to our respective communities and homelands as well as to our other siblings across Oceania.
Multi-Purpose function-based Parliamentary Optimization Framework for Community Detection over social media
Authors: Rathore Rishank . , Pippal Ravi Kumar Singh
Published: April 2023

This paper presents a multi-purpose function-based Parliamentary Optimization, community detection methods. Initially, the population of Parliamentary Optimization Algorithm was created in a Python environment for the data used. The population formed was divided into a certain number of groups, and the power values of each group were calculated. While strong groups show joining according to the determined combination probability value, the vulnerable groups are eliminated from the population according to the determined deletion probability. The result for the problem has been approached. The program steps continued until all groups were combined and the termination condition of the algorithm was met; the individual with the highest eligibility values among the remaining data in the last stage was accepted as the solution to the overlapping community discovery problem of the proposed algorithm. Subsequently, performs a proposed work evaluated over one artificial and four real network-based social media data sets. The comparison of feature evaluation is carried out to identify the influence of Single and Multi-Purpose functions on community detection performance. Finally, this paper gives a comparative analysis of proposed MPPOA algorithm worth three heuristic overlap community detection algorithm over six real social media data set.
A Comparative Study of the California Bearing Ratio Value of Subgrade Made by Stone Dust and Natural Sand with Coarse Aggregate
Authors: Gupta Ashish , Kumar Beerendra , Khati Bhishm Singh
Published: April 2023

Resources of engineering materials (sand) used for construction activities are limited, so some other materials should be introduced by changing the sand. Stone dust produced from Stone Crushing Zone appears as a problem for effective disposal. Stone dust can be replaced by sand which is used as a fine aggregate in construction work. In this study, the main concern is to find an alternative to sand. Replacement of normal sand by stone dust will work both solid waste minimization and sand recovery. Stone dust is one of the alternatives to sand which can meet the demand of fine aggregate. In the engineering practice, the properties of existing sub-grades are required for the construction of the earth, thereby improving density and strength of the subgrade. A series of California Bearing Ratio (CBR) tests have been conducted for determination of soaked and un-soaked CBR by using the stone dust as a fine aggregate blended with 10 mm and 20 mm size Coarse Aggregates (CA). A detailed comparison is made for the findings of the CBR tests conducted on samples prepared using natural sand (as a fine aggregate) blended with 10 mm and 20 mm size coarse aggregates.
Comprehensive Study of User Behavior in Social Media Using Business Process Re-Engineering
Authors: SHUKLA VIVEK
Published: April 2023

Business process re-engineering is the representation of a center-business method of measuring designed to improve product returns, quality, or decreasing expenditures. It usually involves investigate organizational processes, finding inferior or wasteful measures, and identifying techniques to disposing or changing them. As of late online media has gotten universal and essential for social systems administration and substance sharing. Online media have reached a step in which its impact is believed by larger connections nowadays. The organizations have had a vital role to play in rethinking their current economic initiatives and planning new business cycles in globalized marketplaces. Our paper discusses topics such as how web-based media shape market cycles and why they take proactive steps in modern companies. An organization's progress relies on the successful performance of its expected results. These market initiatives are also being contemplated whilst a few aspects are being prepared. The internet media promotes a mixture of individuals from separate places to exchange substances, which acts as an essential and critical feature in the characterization of market measures. Business measures through online media are a unique pattern for the present organizations. As web-based media, a rich pool of data through the successful use of modern systems is created. Businesses will profit immensely from online media and this analysis region is also limited by the field of information technology. Our paper is a little focused on the research carried out in the province.
Effect of Change in Startup Cycle Time on Transient Thermal Stresses in Steam Turbine Rotor
Authors: Nagpure Homeshwar Girirao , Nath Samir Kumar
Published: April 2023

During the turbine start stop period, occuring at brief intervals , the temperature of the steam turbine rotor varies. Because of the significant temperature gradients, this shift in temperature causes transitory thermal stresses in the rotor. Changes in material parameters such as thermal expansion coefficient ,modulus of elasticity, thermal conductivity, specific heat, Poisson's ratio, and others cause transient stresses. Thermal and mechanical stresses are applied to the turbine rotor. Before designing the rotor, it is necessary to estimate transient thermal stresses. The finite element study of a 210 MW steam turbine rotor for transient thermal loading is investigated in this paper. 30Cr1Mo1V was used to make the rotor. CAD software (PRO-E) was used to create the high-pressure turbine model. Since the steam turbine shaft (rotor) was symmetric about the axis along which it rotates, the model was solved using a 1 Degree slice model. Ansys 11 was used to investigate the FE model for transient thermal stresses for reduced cold start up cycle. The analysis was carried out for start up cycles of 560, 440 and 320 minutes respectively. The comparative results were studied and it was observed thatalthough the transient thermal stresses in the reduced cold start up cycle of 440 minutes are higher as compared to the transient thermo-mechanical stress value for actual cold start up cycle (560 minutes) but are within safe limits of yield and tensile strength. The thermal stress values for the other reduced cold start up cycle (320 minutes) re quite higher than the allowable yield and tensile strength of the material and hence cannot be considered as feasible start up cycle. Thermal stresses in the transient state were found to be significantly higher than steady state thermal stresses.
Review of Hybrid Solar-Biomass Power Generation System
Authors: Waqar Mohd , Shukla Anoop Kumar , Sharma Meeta , Maheswari Mayank , Nandan Gopal
Published: April 2023

The present paper reviewed the studies of the hybrid solar-biomass power plants. Based on renewable energy, several configurations of hybrid power cycles are discussed and summarized. It includes the technical, economical, and environmental aspects of the hybrid solar-biomass plant, how the hybrid power plant works, and the essential resources required for the setup and running of the hybrid solar biomass plant. The advantages and disadvantages associated with the single renewable resource-based power plants are also discussed. The hybrid power plants help rectify the disadvantages over single resource plants, improve the power production rate of the plant, and help it run over seasonally.  The present paper also discussed the solar and biomass potential in the Indian context and compared the progress of the hybrid solar-biomass power generation system with other countries.
Contribution of Multiprotocol Label Switching Traffic Engineering in Throughput Enhancement
Authors: Swami M M , Gaikwad D P , Kolte S S , Phadatare M M
Published: April 2023

Multiprotocol Label Switching traffic engineering offers competency to all types of service providers including mobile,internet. Service provider should provide highly stable and seamless connections over the globe for customers connected to network. This paper describes designing of Multiprotocol Label Switching along with traffic engineering with the help of Interior Gateway Protocol. Multiprotocol Label Switchingtraffic engineering also assures path, link and node protection functionality along with router reflector features which always ensure better efficiency and easy administration. The efficient use of available resources in internet service provider infrastructures is one of the key requirement to meet today's highly demanding business which can be possible with the help of Multiprotocol Label Switchingtraffic engineering. In this paper, one of solution has been demonstrated to mitigate subjected the requirement.
Growth of Individualizing Web Services using APIs: REST and SOAP
Authors: Banubakode Abhijit , Chore Priya
Published: April 2023

Web Services are a collection of open protocols and standards that enable clients and servers to connect with one another. It allows various programmes to communicate with one another. Representational State Transfer (REST) and Simple Object Access Protocol (SOAP) are the two most extensively utilized web services today (SOAP). REST is an architectural approach, whereas SOAP is an underlying protocol. Both services are used to manage internet communication (www). Both services have advantages and downsides, and it is up to the web developer to decide which the better option is for their purposes. The purpose of this research is to construct a REST API and a SOAP API, respectively, using JAX-RS and JAX-WS, and to compare the two APIs.
Data Storage Security in Cloud Computing Using Aes Algorithm and Md5 Algorithm
Authors: Kadam Anil Kumar J , Varma Vaibhav , Patil Sonal , Patil Mohit , Patil Madhuri
Published: April 2023

The most intriguing computing paradigm shift in information technology today is cloud computing. However, security and privacy are seen as major roadblocks to widespread adoption. The authors present a list of important security concerns and encourage more research into security solutions for a secure public cloud environment. Cloud computing is a new term for a long- awaited technology. Computing as a utility is a vision. The cloud gives on-demand network access to a centralised pool of programmable computing resources that may be deployed quickly and effectively as well as little management overhead