bluuebunny/crossref_metadata_2025 huggingface dataset:
Antimicrobial activity of Parrotiopsis jacquemontiana and Caesalpinia decapetala plant extracts against selected pathogens
Authors: Ullah Asad , Siraj Unays , Muhammad Atif , Junaid Muhammad , Arif Hafsa , Batool Sidra , Ullah Shakir , Ullah Shahab
Published: January 2024

Antimicrobial-resistant bacteria are a global health concern. Some gram-negative bacteria have acquired resistance to many notorious diseases induced by various pathogens. Therefore, new antibacterial agents are needed to combat these infections. We utilised the agar well diffusion method to find the antibacterial capabilities of Caesalpinia decapetala and Parrotiopsis jacquemontiana aqueous and methanolic extracts. We aimed to find the efficacy of these extracts and their various components against selected pathogens. Methanolic extract showed significantly higher antimicrobial activity against all tested pathogens compared to aqueous extracts, such as 20 mg/mL of MRE-CD, which showed 12.16 ± 1.04 mm inhibitions against P. aeruginosa. In contrast, 10.5± 0.5 mm against S. dysenteriae inhibition compared to 20 mg/mL of MRE-PJ showed 10.16±0.76 mm inhibition against E. coli. Meanwhile, only aqueous root extracts of P. jacquemontiana at 10 mg/mL showed the least 1.5 ± 1.32 against S. dysenteriae mm inhibitions, while E. coli appears to be the less sensitive strain at 10 mg/mL of methanolic stem extract of P. jacquemontiana compared to the aqueous extract of C. decapetala stems, significantly affecting the growth of gram-negative bacterial strains. Therefore, these plant extracts have great natural antimicrobials, and further evaluation would be necessary to use them.
Crescimento inicial de Dendrocalamus asper em resposta a relações cálcio:magnésio, silício e zinco
Authors:   , Paula Rodrigo Nascimento de
Published: January 2024

O interesse crescente pela cultura do bambu no Brasil vem de encontro com a necessidade de evoluir com o conhecimento do manejo nutricional. Estudos demonstram a importância de nutrientes como cálcio e magnésio, sendo que o magnésio chega a superar a quantidade quando comparado com o cálcio nos tecidos do bambu. Outro elemento, o silício, aparece como principal componente da massa de nutrientes em estudos com bambu, além disso, a literatutua demonstra vários estudos com efeitos positivos do zinco em gramíneas. Tem-se como objetivo deste trabalho avaliar a produção de biomassa de Dendrocalamus asper, cultivado em vasos, sob efeito de relações cálcio e magnésio (Ca:Mg), e de doses de silício. O experimento foi instalado no viveiro de pesquisa do Departamento de Engenharia Florestal da Universidade Federal de Viçosa, em arranjo fatorial 5 x 5 (5 níveis de relação Ca:Mg e 5 níveis de doses de silício), mais um tratamento adicional com zinco em vasos de 25 L, disposto no delineamento experimental de blocos ao acaso. Os tratamentos consistiram de cinco relações Ca:Mg (3:1; 2:1; 1:1; 1:2; 1:3), sendo as doses calculadas com base nos resultados da análise de caracterização química do solo, elevando-se a saturação por bases até o nível de 50%; cinco doses de silício, equivalentes a 0, 2, 4, 6 e 8 t ha-1 de Agrosilício Plus® ha-1, um tratamento adicional com Zn, equivalente a dose de 5 kg ha-1 . Os produtos utilizados foram Carbonato de Cálcio e Hidróxido de Magnésio. Para o silício utilizou-se Bugram Protect® via solo. Para o Zn utilizou-se como fonte sulfato de zinco. Todos os tratamentos receberam as mesmas quantidades de NPK, em adubações de plantio e cobertura, totalizando 45 g vaso-1 de P2O5, 20 g vaso-1 de N e 50 g vaso-1 de K2O. As avaliações foram realizadas após 207 dias de cultivo, quantificando o número de brotos, massa seca de folhas, galhos, colmos, parte aérea, rizomas, sistema radicular e massa seca total. Os resultados obtidos foram analisados estatisticamente, através da análise de variância, teste de Dunnett e Tukey e análise de regressão. Como resultado, não houve efeito significativo, pelo teste Dunnett a 5% de probabilidade, para aplicação Zn, quando comparado com os demais tratamentos. Obteve-se resposta significativa, a 5% de probabilidade, pelo teste de Tukey para a relação Ca:Mg 1:3, para massa seca de sistema radicular e massa seca total. Houve resposta significativa para maior dose de Si (equivalente a 8 t ha-1 de Agrosilício Plus®). Pela análise de regressão é possivel observar que os modelos ajustados indicam que a dose ótima, onde haverá maior crescimento é atingida em doses de Si superiores as testadas para essa idade e condição de cultivo. Os resultados demonstram respostas positivas do crescimento de Dendrocalamus asper com maior disponibilidade de Mg e Si no substrato. Palavras-chave: Bambu. Adubação. Calagem. Nutrição mineral.
Observer Design Pattern Applied on Real Life Store Use Case
Authors:   Sr. Director – Enterprise Architecture, Fortune Brands Home & Security,USA, Kulkarni Nilesh D , Bansal Saurav ,   Sr. Manager - Digital Applications, , Fortune Brands Home & Security,USA
Published: January 2024

The paper explores the Observer Design Pattern in the context of a software system. It discusses the significance of design patterns in software engineering, particularly for object-oriented design, emphasizing their role in creating flexible, elegant, and reusable systems. The Observer pattern is specifically examined for its effectiveness in distributed event handling systems, highlighting its utility in decoupling components and facilitating communication between objects. A real-life scenario involving a customer and a store is used to illustrate the application of this pattern, showcasing how it optimizes customer experience and resource management in a retail context. The document also delves into technical aspects like .NET framework, UML basics, and provides C# code examples to demonstrate the practical implementation of the Observer pattern in a software ordering system.
Strategy Design Pattern Applied on a Mobile App Building
Authors:   Sr. Director – Enterprise Architecture, Fortune Brands Home & Security, USA, D Kulkarni Nilesh , Bansal Saurav ,   Sr. Manager - Digital Applications, Fortune Brands Home & Security, USA
Published: January 2024

This paper provides the importance and application of design patterns in software engineering, particularly focusing on the Strategy Design Pattern. It outlines how design patterns offer efficient, flexible, and reusable solutions to common problems in object-oriented software development. The paper presents a case study of Strategy Design Pattern’s application in a mobile app builder, emphasizing its role in creating adaptable and maintainable software architecture. Additionally incorporates commentary on the SOLID Open and Close principle, explaining how it allows software entities to be extendable without modifying existing code, thus enhancing the scalability and robustness of the application. The OC principle integration with the Strategy Design Pattern demonstrates its practicality in promoting flexible and stable software development.
A Bioaugmentation Approach for Efficient Total Nitrogen Reduction in Landfill Leachate
Authors:   ACE Solutions Co, Ltd, Ok Alan , Jung Ken ,   ACE Solutions Co, Ltd, Lamba Himanshu Ramesh ,   BiOWiSH Technologies, Inc
Published: January 2024

In this study, the focus was on assessing the efficacy of Bioaugmentation in addressing Total Nitrogen (TN) levels in leachate from one of South Korea’s largest waste landfills. The utilization of proprietary bioaugmentation technology led to a remarkable 89% reduction in Total Nitrogen levels within a mere three weeks of implementation at the site. The significant outcome of this reduction not only ensured compliance with stringent Total Nitrogen discharge standards but also brought about the added advantage of eliminating the need for certain chemicals in the leachate treatment process. This dual benefit highlights the practical and sustainable nature of Bioaugmentation as a solution for Total Nitrogen reduction in Landfill Leachate. The findings from this study contribute valuable insights into the potential of Bioaugmentation as a cost-effective and efficient strategy. The ability to expedite the reduction of Total Nitrogen levels in landfill leachate not only addresses environmental concerns but also holds promise for streamlining waste management practices on a larger scale. As we move forward, such innovative approaches could play a crucial role in shaping more sustainable and eco-friendly solutions for waste treatment in landfills.
Mystical Elements in the Novels of Marah Rusli
Authors: Stark Alexander , Baharuddin Khairul Hiyam , Hassan Ariezal Afzan , Mohd Nasir Nazatul Syima
Published: January 2024

Marah Rusli is widely recognized as a prominent figure in Indonesian literature, particularly in the field of writing novels. He is regarded as the 'father' of contemporary Indonesian fiction. His well-known writings, including Sitti Nurbaya, were the subject of numerous analyses. The mystical components, another aspect of Marah Rusli's writing that appears to be recurrent, will be examined by the researchers in this article. The findings indicate that Marah Rusli, despite being aligned with modernist ideals and expressing criticism towards traditional Minangkabau rituals, exhibited a profound inclination towards mystical concepts that can be characterized as rooted in folk beliefs. His autobiographical novel Memang Jodoh, in particular, includes numerous mystical influences and illustrates supernatural events. For the reader, this fact is fascinating as it provides new, important background information about the work of Marah Rusli.
Faktor Penyebab Peningkatan Tanah Pertanian Terbiar di Negeri Kedah Darul Aman
Authors: Malek Nor Malina , Ani Mohd Zulkifli
Published: January 2024

Isu tanah pertanian terbiar sentiasa menjadi perhatian pihak kerajaan dengan memperuntukkan pelbagai insentif dan dana dalam usaha untuk memperkasakan sekuriti makanan negara sekaligus mengelak kebergantungan terhadap bekalan import. Tindakan tersebut wajar supaya negara kekal berdaya tahan daripada sebarang kemungkinan pada masa hadapan di samping menjana ekonomi berasaskan pertanian. Namun, isu peningkatan tanah pertanian terbiar berterusan membelenggu pemilik tanah dan negara apabila berlaku peningkatan saban tahun sepertimana yang dilaporkan oleh Jabatan Pertanian. Oleh itu, kajian ini bertujuan untuk mengkaji faktor-faktor yang menyebabkan peningkatan tanah pertanian terbiar di Negeri Kedah Darul Aman. Kajian ini menggunakan pendekatan penyelidikan kualitatif dan data dikutip melalui kaedah temu bual separa berstruktur serta pemerhatian langsung. Seramai 33 orang pemilik tanah dan 5 orang informan kajian telah ditemu bual. Kaedah analisis kandungan telah digunakan untuk menganalisis data menerusi transkrip temu bual. Melalui kajian ini, isu sebenar yang dihadapi oleh pemilik tanah pertanian dapat dikenal pasti. Hasil kajian menunjukkan bahawa masalah modal merupakan faktor utama yang mempengaruhi peningkatan tanah pertanian terbiar di negeri Kedah Darul Aman. Selain itu terdapat juga beberapa faktor lain yang mempengaruhi seperti bantuan agensi kerajaan, birokrasi, kekurangan kelengkapan asas, masalah minat dan lain-lain faktor yang merangkumi masalah haiwan liar, bencana alam dan sumber tanah. Hasil kajian ini diharap dapat membantu Kerajaan Persekutuan dan Kerajaan Negeri merangka strategi dalam penambahbaikan Dasar Pertanian Negara, melaksanakan pendekatan strategi pertanian yang kompeten di samping pengurusan dan perancangan guna tanah yang lebih dinamik di masa hadapan.
The Graphic Schemata Drawings of Children Using Golomb’s Representational Theory
Authors: Subramaniam Maithreyi , Wardi Rainal Hidayat , Ghazali Rusmawati , Rosman Rahman , Naser Faradina Liana
Published: January 2024

This study intends to study primary schools’ children’s graphic schemata drawings developments using Golomb’s representational theory. The graphic schemata drawing of 7-8, 9-10 and 11-12-year-old children was examined based on the stimulus given to them. Children’s drawing responses were observed in terms of representational activity marks such as line, shape and colour. The subjects were 384 from primary schools. Stimulus materials consisting of a theme “A Garden with Trees, Flowers and Insects” were given to the children to complete their drawings. The statistical analysis uses frequencies, percentages, and chi-square measurement to analyse the drawings of the children. The analysis indicates that the three key aspects of Golomb’s representation have similarities and differences based on each group of young children’s age. The findings revealed that Golomb’s representational theory were significant to the primary schools’ children’s age group. Hence, it can be concluded children’s creative and intellectual development is positively impacted.
Comentarios sobre registros recientes e históricos del oso de anteojos, Tremarctos ornatus, en la Cordillera Central del departamento de Caldas, Colombia
Authors: Jaramillo-Castrillón Manuela , Marín-Ramírez Alexandra , Tamayo-Zuluaga Andrés F. , Ospina-Pérez Erika M. , Terán-Sánchez Sofía , Guerrero-Diaz Alison F. , Pisso-Flórez Gustavo Adolfo , Cepeda-Duque Juan Camilo , Ramírez-Chaves Héctor
Published: January 2024

En el número 9(2) de Mammalogy Notes, se presentó un registro novedoso del oso de anteojos, Tremarctos ornatus, para la cordillera Central en el departamento de Caldas, Colombia. El registro fue obtenido en el municipio de Salamina, en una zona con intervención antrópica y está basado sobre una única fotografía lateral de un individuo considerado adulto. Sin embargo, una evaluación minuciosa de la fotografía demuestra que el tamaño del individuo con respecto al fondo, junto con la coloración diferenciada entre el lomo y el cuello, el largo del pelaje, la forma del cuerpo, en especial de las orejas y el tamaño de las patas respecto al cuerpo, que el registro corresponde a un individuo adulto de taira, Eira barbara. Aunque la presencia del oso andino en la cordillera Central de Colombia ha sido documentada para departamentos como el Tolima, Quindío, y Risaralda, aún hay carencia de registros validados que indiquen su presencia en la zona del registro en este sector de Caldas. Se recomienda mayor cuidado en el análisis de la evidencia presentada para soportar hallazgos novedosos que tienen implicaciones para la conservación y manejo de especies amenazadas en paisajes intervenidos.
PENGARUH EMPATI DAN KONTROL DIRI TERHADAP AGRESIVITAS SISWA KELAS XI SMK NEGERI 1 BINTANG BAYU
Authors: Tumiyem Tumiyem , Syasmita Indah , Umara Yudi
Published: January 2024

ABSTRAK

Agresivitas yang merupakan tindakan anarkis atau merugikan orang lain, juga dipengaruhi kecerdasan emosi yang dimiliki individu. Penelitian ini bertujuan untuk mengetahui pengaruh empati dan kontrol diri terhadap agresivitas siswa kelas XI SMK Negeri 1 Bintang Bayu . Masalah dalam penelitian ini adalah: Adakah pengaruh empati dan kontrol diri terhadap agresivitas siswa kelas XI SMK NEGERI 1 BINTANG BAYU ?. Penelitian ini menggunakan penelitian deskriptif dengan pendekatan kuantitatif. Populasi dalam penelitian ini adalah siswa kelas XI SMK Negeri 1 Bintang Bayu  yang berjumlah 50 orang. Sampel diambil keseluruhan jumlah siswa, yaitu sebanyak 50 orang. Data diambil melalui angket empati, kontrol diri dan agresivitas sebanyak 30 item sebelum uji coba, dan setelah uji coba  23 item. Data analisis dengan menggunakan teknik uji persyaratan analisis, dan uji hipotesis regresi linier berganda. Berdasarkan hasil penelitian data yang menggunakan uji hipotesis linier berganda menunjukkan pengujian pertama bahwa nilai sig untuk empati adalah sebesar 0,064 (p > 0,05) maka dari itu hipotesis (H1) ditolak artinya variabel empati tidak berpengaruh signifikan terhadap agresivitas, selanjutnya untuk variabel kontrol diri, data diatas menunjukkan nilai sig. sebesar 0,046 (p < 0,05) maka dari itu hipotesis (H2) diterima, artinya kontrol diri sangat berpengaruh signifikan terhadap agresivitas. Melalui pengujian kedua  hasil analisis data dari nilai sig F sebesar 0,006 ( p < 0,05) maka dapat disimpulkan bahwa hipotesis (H3) diterima, artinya variabel kontrol diri dan empati berpengaruh signifikan secara bersama-sama terhadap agresivitas. Maka dapat disimpulkan “Terdapat pengaruh empati dan kontrol diri terhadap agresivitas pada siswa kelas XI SMK Negeri 1 Bintang Bayu.

Kata Kunci : Empati, Kontrol Diri, Agresivitas
PENGARUH PENDEKATAN SAINTIFIK TERHADAP KEMAMPUAN LITERASI MATEMATIS SISWA KELAS V SD NEGERI 067097 MEDAN BARAT
Authors: Harahap Azizah Yusra Amaliyah , Hasibuan Ainul Marhamah , Supriyani Ani
Published: January 2024

Penelitian ini bertujuan untuk mengetahui pengaruh pendekatan saintifik terhadap kemampuan literasi matematis siswa kelas V SD Negeri 067097 Medan Barat. Penelitian ini merupakan penelitian kuantitatif dengan sampel penelitian sebanyak 54 siswa kelas V SD Negeri 067097 Medan Barat. Teknik pengumpulan datanya menggunakan angket pretes dan post test dengan UJi t Test sebagai teknik analisis datanya. Hasil analisis dan pengujian hipotesis penelitian maka dapat disimpulkan siswa yang kemampuan literasi matematis siswa yang diajarkan dengan pendekatan Saintifik lebih tinggi dibandingkan dengan pembelajaran biasa (Fhitung = 11.493 dan nilai sig. 0,001 < 0,05).
Penyuluhan Penggunaan Obat Rasional (POR) dalam Swamedikasi pada Masyarakat di Desa Sejahtera Kecamatan Palolo Kabupaten Sigi
Authors: Niluh Niluh Puspita Dewi , Marselinus Marselinus , Dipayana I Made
Published: January 2024

Self-medication is a common activity carried out by a person when he is sick. Proper self-medication by providing information provided by health workers will help the patient's healing process by optimizing therapy. Irrational management can result in various disadvantages such as medication errors due to inaccurate self-diagnosis; drug use is not appropriate because of the acquisition of incorrect information from the media; waste of time and costs; can cause unwanted drug reactions such as sensitivity, allergies, side effects or resistance. The use of drugs is said to be rational, if the patient receives the right drug for clinical needs, in doses that meet the needs for a sufficient period of time, and at affordable costs for both individuals and society. This activity was carried out with the aim to increase the understanding and knowledge of the community in Sejahtera Village, Palolo District, Sigi Regency, especially about rational medicine and the provision social assistance. Counseling is given by interactive lecture method through posters and distribution of leaflets. The effectiveness of the extension was tested by giving a partner satisfaction questionnaire to the activities carried out. The results of the activity observations showed that the Partners were satisfied with the outreach activities carried out.
Isolation and Identification of Pathogenic Bacteria from Hospital Door Handles/knobs
Authors: Abougrara Ghada , Algeblaue Ghada , Almabrouk Enas , Almahdi Ebtisam
Published: January 2024

Background and objectives. Contracting infectious diseases from microbial contaminated door handles is a potential threat to health and safety. Therefore, we performed microbiological screening of door handles at the door handles of Zawia Education Hospital, Zawia, Libya, to estimate the presence of potentially pathogenic organisms. Methodology. A total of 125 samples were collected aseptically by using a moistened sterile bacteriologic swab on different days by scrubbing the selected handles and immersing them in the sterile broth to be transported to the microbiology laboratory, within no more than 30 minutes after collection. All the bacterial isolates were characterized and identified by standard diagnostic microbiological procedures and criteria, according to the Clinical and Laboratory Standards Institute. Data were presented as counts and percentages using Excel spread data sheath. Results: There was a total of 147 isolates obtained from the 12 sampled departments. The frequency of isolation of these organisms from these samples was as follows: coagulase-negative staphylococcus (16.80%) in 21 samples, Staphylococcus aureus (10.40%) in 13 samples, Diphtheroid (76.00%) in 95 samples, non-lactose fermenting gram negative bacilli (12.80%) in 16 samples, streptococcus pyogenes (0.80%) in one sample, and Klebsiella pneumoniae (0.80%) in one sample. Conclusion. Staphylococcus aureus, coagulase negative staphylococcus, streptococcus pyogenes, klebsiella pneumonae, Diphtheroid, and non-lactose fermenting gram-negative bacilli were the main bacteria isolated in this research study. The results of the present study demonstrated that contact surfaces such as door handles are often colonized by several bacteria and serve as a potential source of infections.
The Relationship between Mobile Phone Usage and Academic Performance of Secondary School Students: A Case Study in Asian International School
Authors: Wedikandage L.N.P. , Zahir Mohamed Razmi
Published: January 2024

Technology is a global imperative because of its contributions to human existence and has improved global socioeconomic relations. As a result, the mobile phone has become the most important mode of communication today. It is also an important learning tool for today’s school students. It enables students to access online learning platforms, course resources, and interact digitally. The goal of this study was to determine the relationship between mobile phone usage and academic performance of secondary level students at an international school in Sri Lanka. The study’s sample consisted of 523 Secondary level students from an International School, ranging from Form 1 to Upper 6. For the study, a survey research design and questionnaires were used. Google Forms was used to create the students’ survey. The findings show that there is a positive relationship between mobile phone usage and academic performance among secondary school students, no relationship between mobile phone usage and academic performance among secondary school students of different parents’ occupations, and a relationship between the frequency of mobile phone usage and academic performance among secondary school students.
The Relationship between Parental Knowledge and Anxiety Levels towards COVID-19 Vaccination in Children
Authors: Jusuf Siti Khodijah Nur'Aini , Nurdin Azizah , Sakinah Andi Irhamnia , Sa’diyah Halimah
Published: January 2024

Introduction: The COVID-19 vaccine is crucial as a preventive measure against infection with the SARS-CoV-2 virus. The Indonesian Pediatric Association (IDAI) has approved the vaccination for children under 12 years, allowing them to receive up to the second dose. However, a lack of knowledge about the vaccine has led to hesitancy among parents, fueled by misinformation and concerns about potential side effects on their children. This study aims to explore the correlation between parental knowledge and their anxiety levels concerning the COVID-19 vaccination for their children.Methods: We conducted a cross-sectional survey with 207 parents of students from SDIT Nurul Fikri in Makassar City. The research instrument was a structured questionnaire. Data were analyzed through univariate analysis, followed by bivariate comparisons using the Chi-square test and multivariate regression.Results: Among the respondents, a majority (58%) exhibited limited knowledge of COVID-19, with 50.2% reporting varying degrees of anxiety about the vaccination for their children. Of the children, 46.3% had received the complete vaccination series. Statistical analysis revealed a significant correlation between parental knowledge and anxiety levels regarding their child’s COVID-19 vaccination (α<0.05; p=0.007).Conclusion: There is a significant correlation between knowledge and anxiety concerning children's COVID-19 vaccination, with knowledge being the most significant predictor of anxiety levels.
Uso de opioides paliativos en pacientes oncológicos al momento de fallecer: “el mito de la morfina”
Authors: Kramer Verónica , Peralta Barbarita , Stamm Tomás , Lemp Carla , Aravena Natalia , Cárcamo Marcela
Published: January 2024

Objetivos: Determinar cuáles fueron los opioides usados al momento de morir, tiempo de uso e incremento de dosis. Materiales y métodos: Pacientes paliativos ingresados el año 2008 al Instituto Nacional del Cáncer. Los datos fueron obtenidos del libro de ingresos y registro informático de recetas. Resultados: Ingresaron 456 pacientes, de éstos fallecieron 170 (37%), con mediana de edad de 66 años (16-97) y 53% mujeres. Al momento del fallecimiento, un 14% no estaba recibiendo opioides. Los opioides utilizados fueron codeína, 11,7%; tramadol, 32,4%; oxicodona, 0,7%; morfina, 37,2%; metadona, 4,8%; buprenorfina TTS, 10,3% y fentanilo TTS, 2,8%. En todos, las dosis promedio fueron bajas (morfina, 26,9 mg/día; metadona, 17,9 mg/ día; tramadol, 142,8 mg/día; buprenorfina, 19 µg/h; y fentanilo, 19,5 µg/h). No se evidenció un incremento significativo en las dosis. El tiempo promedio de uso desde el último cambio de opioide fue 41,3 DE+63,5 días con una mediana de 26 días (1 a 366). No se encontró diferencia entre los opioides.Discusión: La mitad de los pacientes fallecidos estaban en OMSIII. De los usuarios de opioides potentes, solo un 37% estaba con morfina. Las dosis promedio de todos fueron bajas. El tiempo transcurrido entre el inicio del opioide y la muerte no difirió entre opioides. En suma, no todos los pacientes paliativos en nuestra población falleció recibiendo morfina, no se evidenciaron diferencias en el tiempo de uso del opioide ni un aumento de la dosis, lo cual desmitifica dos creencias: “si uso morfina me voy a morir antes” y “si uso morfina deberé aumentar las dosis y me haré dependiente”.
ANALYSIS OF PERFORMANCE OF A PV SOLAR CELL AND EFFECT OF PHYSICAL PARAMETER
Authors: Rehan Ali Rahimoon  , Kamil Zaman Rahimoon  , Aamir Khan Jarwar  , Muhammad Faizan Shaikh  , Mujtaba Abid Hussain
Published: January 2024

In recent days, PV solar systems have been commercialized in almost the whole world because of its advantageous efforts like a long-term supply of power at a very lower cost and various governments are also encouraging consumers to use sustainable green energy. The purpose of this study was to develop a model that allows the user to predict PV cell’s current-voltage (I-V) and power-voltage (P-V) characteristic curves by varying irradiance, cell temperature, and diode ideality factor, and the value of series resistance. The characteristic curves obtained from the simulation of the MATLAB/Simulink model are matched with the data given by the manufacturers by changing the value of mentioned internal parameters. Comparative results of one and two diode models with different electrophysical parameters are shown. There are analyses for photocurrent, voltage and power, as well as their dependence on single and two diode models. Block diagram models for diodes are also presented. Keywords: Irradiance, Temperature, Ideality Factor, Series Resistance, current-voltage characteristics.
ENHANCING BIOMASS GASIFICATION: ANALYZING CRUCIAL PARAMETERS FOR SUSTAINABLE ENERGY PRODUCTION
Authors: Sh. A. Amankeldin  , A. A. Kalinin
Published: January 2024

Biomass gasification is a promising technology for converting organic materials into valuable gases such as syngas, hydrogen, methane, and chemical feedstocks. This process involves complex thermochemical reactions influenced by various parameters. This article explores key factors affecting product quality during biomass gasification, including feedstock composition, moisture content, particle size, operating conditions, catalysts, and sorbent-to-biomass ratio. The study sheds light on the advantages and disadvantages of different gasifier types, such as updraught, downdraught, fluidised bed, and entrained flow, highlighting their suitability for specific applications. It also delves into the significance of parameters like steam-to-biomass ratio and air equivalence ratio. The findings underscore the importance of optimizing these factors to enhance gasification efficiency and minimize undesired byproducts. Biomass gasification holds significant potential for sustainable energy production and should be explored further to harness its benefits effectively. Keywords: Biomass, alternative source of energy, bioenergy, biofuel, biomass gasification, gasifier types.
КҮН БАТАРЕЯЛАРЫН ҚОЛДАНУДЫҢ ТЕХНИКАЛЫҚ-ЭКОНОМИКАЛЫҚ НЕГІЗДЕМЕСІ
Authors: Н. У. Бижанов  , Д. Н. Утебаев  , Т. И. Глущенко
Published: January 2024

Қазіргі әлемде күн энергетикасының жоғары даму қарқыны жақын арада ол электр энергиясының негізгі көздерінің біріне айналады деп айтуға мүмкіндік береді. Мақалада автономды энергиямен жабдықтау үшін жаңартылатын энергия көздерінен жұмыс істейтін энергия жүйелерін пайдаланудың өзектілігі, атап айтқанда, елдің энергетикалық тәуелсіздігін нығайтуға ықпал ететін тұтынушылар үшін экологиялық таза және экономикалық тұрғыдан тиімді электр энергиясын өндіру үшін күн энергиясын қолданудың өзектілігі қарастырылған. Энергияның негізгі көздері, атап айтқанда сұйық отын генераторы, газ тәрізді отын генераторы, күн электр станциялары, автономды энергиямен жабдықтау үшін қолданылатын шағын гидрогенераторлар қарастырылады. Дизельді электр станциясымен салыстырғанда күн электр станциясын пайдаланудың техникалық-экономикалық негіздемесі 25 жыл есептік пайдалану уақытымен келтірілген. Дизельді және күн электр станциясының жүйелері үшін жабдықтар мен техникалық қызмет көрсету құны анықталды. Автономды энергиямен жабдықтау үшін сұйық (дизель) отынмен жұмыс істейтін электр станциясы мен күн электр станциясының пайдалану шығыстары қарастырылды. Энергиямен жабдықтау жүйелері үшін қолданылатын әртүрлі энергия көздері ұсынылған. Автономды энергиямен жабдықтау жүйелері үшін ұсынылған энергия көздерінің артықшылықтары мен кемшіліктеріне салыстырмалы талдау жүргізілді. Дизельді электр станциясымен салыстырғанда күн электр станциясының негізгі артықшылықтары атап өтілді. Кілтті сөздер: автономды энергия, жаңартылатын энергия, күн батареясы, күн электр станциясы, дизельді электр станциясы.
СИНТЕЗ И ХАРАКТЕРИЗАЦИЯ ТОНКОПЛЕНОЧНЫХ ПОКРЫТИЙ НА ОСНОВЕ Nb2O5-MoN-AlN ПОЛУЧЕННЫХ МЕТОДОМ МАГНЕТРОННОГО НАПЫЛЕНИЯ
Authors: Д. Б. Боргеков  , А. Л. Козловский  , Д. И. Шлимас  , А. Н. Бергузинов
Published: January 2024

В работе представлены результаты оценки прочностных свойств многослойных тонкопленочных покрытий на основе соединений Nb2O5-MoN-AlN, полученных методом магнетронного напыления на поверхности стали марки 316 L. Выбор компонент для покрытий обусловлен возможностью повышения устойчивости к внешним воздействиям за счет высоких показателей прочностных характеристик данных покрытий, а также их структурных особенностей. С применением метода рентгенофазового анализа было установлено, что вариация количества слоев и компонент приводит к формированию аморфных покрытий. В качестве методов для определения прочностных характеристик были применены методы индентирования и определения коэффициента сухого трения. В случае нанесения двухкомпонентных многослойных покрытий, установлено, что твердость увеличивается на 10–20 %, а в случае трехкомпонентных покрытий увеличение твердости составило более чем 50 %. При испытаниях на износостойкость полученных покрытий было установлено, что нанесение на сталь марки 316 L двух-трехкомпонентных покрытий приводит к увеличению устойчивости к износу стали более чем в 7–10 раз, при этом профиль износа значительно меньше за счет высокой устойчивости покрытий к износу. Ключевые слова: магнетронное напыление, многослойные тонкопленочные покрытия, нитрид алюминия, твердость, упрочнение.
ПЕРСПЕКТИВЫ ПРИМЕНЕНИЯ ФАЗОПОВОРОТНЫХ ТРАНСФОРМАТОРОВ В ЭЛЕКТРОЭНЕРГЕТИКЕ
Authors: Ж. К. Оржанова  , А. А. Боканова  , Ж. Н. Исабеков
Published: January 2024

Статья посвящена актуальной проблеме – управлению режимами работы энергосистемы для обеспечения регулирования потоков электроэнергии. Для воздушных линий электропередач (ВЛЭП) электроэнергетических систем (ЭЭС) Казахстана с большим количеством параллельных линий разного класса напряжения и значительной протяженности характерно неоптимальное распределение потоков мощности. Развитие и внедрение устройств координации для управления фазами режимных параметров приводящих к перераспределению активных и реактивных мощностей по элементам электропередачи способствует повышению управляемости энергетической системы. В статье рассмотрены инновационные технологии гибких (управляемых) систем электропередач на переменном токе FACTS на основе фазоповоротного трансформатора (ФПТ). Для оптимального потокораспределения, снижения потерь и повышения пропускной способности, разработанных и эксплуатируемых зарубежными энергокомпаниями, было проведено сопоставление и анализ функциональных особенностей ФПТ. Исследования проводились на универсальных стендах ЭВ-4 и ТОЭ-335.1 для определения углов поворота и фазовых сдвигов. Ключевые слова: электроэнергетическая система, потокораспределение, управляемость, потери, FACTS, фазоповоротные трансформаторы, фазовый сдвиг, углы поворота.
МАШИНАЛЫҚ ОҚЫТУ ЖӘНЕ ИНТЕРНЕТ ЗАТТАРЫНА НЕГІЗДЕЛГЕН ҚАЛДЫҚТАРДЫ БАСҚАРУ ЖҮЙЕСІ
Authors: М. Б. Мейрханова  , С. В. Войткевич  , В. А. Иванов  , К. М.Тохметова  , К. К. Смагулова
Published: January 2024

«Жасыл ақылды қоғамға» арналған заттар интернеті мен машиналық оқытуға негізделген тұрмыстық қалдықтарды басқару жүйесі ең заманауи IOT технологиясын қолдана отырып, қоғамның әрбір пәтеріндегі қалдықтарды басқаруды тиімдірек етуге бағытталған. Бұл мақалада қалдықтарды тиімді пайдалану және нақты қалдықтарды тиімді азайту үшін қалдықтарды ақылға қонымды түрде жинау және ыдырату талқыланады. Бұл мақала қалдықтарды екі деңгейде бөлуге бағытталған: сегрегацияның бірінші деңгейі қоғамның жеке үйінде, ал сегрегацияның екінші деңгейі жалпы қоғамда. KNN сияқты машиналық оқыту технологиясы био және биологиялық ыдырамайтын қалдықтардың деңгейі, улы газ концентрациясы сияқты үш сенсорлық мәндердің әртүрлі комбинациялары үшін ескерту хабарламасын жасау үшін қолданылады. Бұл зерттеудің жалпы әсері ластаушы заттардың шығарындыларын азайту, ресурстарды сақтау, бөлу және технологияны пайдалану арқылы энергияны қайта пайдалану арқылы «жасыл» технологияларды ілгерілету болып табылады. Бұл мақалада тұрмыстық қалдықтарды бөлуге және машиналық оқыту мен интернет заттары технологиясына негізделген биокомпост жасау үшін қалдықтарды қайта пайдалануға арналған ақылды қоқыс жәшігі ұсынылады. Мақаланың негізгі үлесі сенсор мәндерінен алынған үш параметрдің тіркесімі негізінде қабылданған шешім негізінде тиісті әкімшілікке ескерту хабарламаларын жіберу болып табылады. Бірінші параметр қоқыс жәшігіндегі биологиялық ыдырайтын қалдықтардың деңгейіне, екінші параметр қоқыс жәшігіндегі биологиялық ыдырамайтын қалдықтарға, ал үшінші параметр улы газдардың концентрациясына байланысты. Кілтті сөздер: Заттар интернеті (IoT), машиналық оқыту, автоматтандыру, ақылды қоқыс жәшігі, KNN әдісі, Arduino UNO, MQ-4 газ сенсоры, Raspberry pi.
БИОГАЗ ҚОНДЫРҒЫЛАРЫНЫҢ ЖҰМЫСЫНА ҚЫЗМЕТ КӨРСЕТУ ТҮРЛЕРІ
Authors: А. К. Жумалиева  , Б. Т. Бахтияр  , Г. У. Турсынбаева  , М. А. Маханова
Published: January 2024

Республикада мал шаруашылығы саласының әлеуеті жылдан жылға артып келеді. Бұл саланың қалдықтары қоршаған ортаның ластануының әртүрлі түрлерін тудырады. Биогаз өндіру қоршаған ортаға теріс әсерді азайтуға мүмкіндік береді. Бұл мақаланың мақсаты биогаз қондырғысына қызмет көрсету түрлері талқылануда. Биогаз қондырғыларының конструктивті және пайдалану параметрлері олардың сенімділігі мен тиімділігін бағалаудың негізгі критерийі болып табылады. Биогаз қондырғысын пайдалану кезеңінде жаңа көңді жүктеудің тәуліктік дозасы және оны енгізу жиілігі үлкен маңызға ие. Жүктеу дозасы – тұрақсыз болып келеді және шикізат түрінде болады, ашыту температурасына және құрғақ заттардың концентрациясына байланысты толық қарастырылады. Сонымен қатар, биогаз өндірісінің тиімділігін арттыруға бағытталған қарапайым биогаз қондырғысын салу кезінде тәртіпті сақтау ұсынылады және биогаз қондырғыларының жұмысы мен қызмет көрсетуіне тоқталады. Реактор құрылғыға тоқтала келгенде, металдан да, құрылыс материалдарынан да жасалуы мүмкін, мысалы: кірпіш, цемент, тас. Қалай болғанда да, реактор герметикалық және коррозияға төзімді болуы керек. Бірінші кезекте тиеу және түсіру құбырларын монтаждау жүргізілуі және сұлбасы ұсынылған. Биогаз қондырғысын іске қосу жолдары. Кілтті сөздер: биогаз, термофильді режим, доза, мезофильді режим, ашыту процесі, реактор, қондырғы.
ОСОБЕННОСТИ ПОСТРОЕНИЯ ПРОЕКТНОЙ ДОКУМЕНТАЦИИ СИСТЕМ УПРАВЛЕНИЯ ЭЛЕКТРИЧЕСКИМ ОБОРУДОВАНИЕМ НА ВОЗДУШНЫХ СУДАХ
Authors: Н. А. Исупова  , А. В. Дробинский  , О. М. Талипов
Published: January 2024

Развитие микропроцессорной техники повлекло за собой внедрение автоматизированных и автоматических систем управления во все сферы жизни, что позволило повысить точность и надежность управления снижая затраты и время на него при этом снижая нагрузку на оператора. Новые системы управления на основе микропроцессоров и контроллеров широко распространяются и на воздушном транспорте, что значительно снижает нагрузку на экипаж, облегчая их работу и повышает надежность работы бортового оборудования при выполнении полетного задания. В статье показаны особенности систем управления энергетическим оборудованием (электротехническими системами) на воздушних судах и трудности, возникающие в связи с этим, при разработке проектной документации. Показана реакция системы оповещения (табло на панели управления) на режимы работы системы управления технологическим процессом. Выявлена невозможность с помощью известных способов выполнения проектной документации показать функционирование системы оповещения на воздущном судне. Предложен вариант изображения сигналов о состоянии системы управления на функциональных схемах автоматизации технологическими процессами на воздушных судах. Он может использоваться при составлении проектной документации систем управления оборудованием как на воздушных судах так и управлением технологическими процессами в наземных условиях. Ключевые слова: система автоматизации, воздушное судно, летательный аппарат, система кондиционирования, функциональная схема автоматизации.
IoT Based Smart Farming Monitoring System for Bolting Reduction in Onion Farms
Authors: Khatal Om Pradip  , Kadlag Ayush Rajendra  , Yewale Ashish Dattatraya  , Arote Akash Dnyaneshwar  , Prof. Kulkarni B. L
Published: January 2024

Commercial commodities like onion, tomatoes, potatoes are very essential for our day-to-day life and living. India ranks second in onion production in the world, which acquires 6% of the market share in the total production of vegetables in India. Onions are the important spice commodities consumed in India almost everyday in every house. Unlike other vegetables, their requirement is daily essential in the kitchen, and therefore, availability in the market at reasonable prices for both producers as well consumers is highly essential. However, they are harvested twice or thrice a year. Unless stored for some time, daily supply, irrespective of the season is not possible. Therefore, storage of onion becomes more important for regular supply to consumers. But the stored onions in onion sheds are exposed to the hot, cold, and humid air. Due to continuous change in climate onions can rot easily. Once the rotting process is initiated it grows drastically and rapidly resulting in unexpected losses of up to 15% of the total production or more. So to avoid this we propose a hygiene monitoring and reporting system using IoT. Internet of Things plays a vital role in smart agriculture monitoring system. Smart farming is an emerging concept, because IoT sensors are capable of providing information about their fields. This system includes electronic circuitry which has been designed and developed to monitor and report. Gas sensors are used to sense the emitted gases. The main purpose of paper is to propose a grid system onion storage methodology which will help to reduce onion degradation due to temperature and humidity. When the onion starts rotting developed system informs the owner and provides a three-way alert which includes alarm, display, and SMS. Inbuilt wireless IoT transmission system enables preserving the record for analysis in the cloud
venta de productos electrónicos en el mercado Veragüense ante los nuevos hábitos de consumo
Authors: Campines Barría Francisco Javier
Published: January 2024

El incremento en las ventas de productos electrónicos ha impactado a los  diversos segmentos de mercado, donde los hábitos de consumo de las personas han sido influenciados por la pandemia del coronavirus. El presente estudio tiene como objetivo determinar cuáles han sido los productos electrónicos más vendidos en el mercado Veragüense ante los nuevos hábitos de consumo ocasionados por la pandemia del Covid-19. La metodología empleada tiene un enfoque cuantitativo de tipo descriptiva con un diseño  no experimental, de corte transversal. La técnica seleccionada para la recolección de datos fue en base a una encuesta, la cual se aplicó a una muestra de 20 empresas de dicada a la venta de productos electrónicos en la provincia de Veraguas. Los resultados muestran que el 85% de los encuestados indican que los productos electrónicos han tenido un aumento significativo en donde 40% señalan que los celulares ocupan el primer puesto en ventas.
Deontología y ética informática
Authors: Consuegra Delia , Sucre Antonio
Published: January 2024

La deontología es parte de la ética, que trata de los deberes y principios que afectan las Tecnología de la Información y Comunicación (TIC). La relación existente entre la ética y la informática es debido al impacto de las tecnologías de la información y comunicación en la sociedad actual. La deontología se ubica entre la moral y el derecho, son las normas que se deben seguir. El presente artículo es una revisión documental sobre la ética y deontología profesional, normas de códigos deontológico-informáticos y las asociaciones profesionales dedicadas al estudio de la ética informática, que tratan de regir los problemas éticos-morales que se puedan dar en el mundo digital, puesto que las redes y el ciberespacio han producido una revolución, donde el componente ético es fundamental para la totalidad de las acciones y relaciones del ser humano en la era de la post-información. La ética informática aporta guías sobre la forma adecuada de actuar cuando no hay reglamentación o cuando la existente está obsoleta, los códigos éticos son un suplemento de la ley, para los que estamos involucrado en la docencia la ética informática es un reto, ya que tenemos el compromiso de educar con conciencia ética y contribuir en esta nueva y creciente sociedad de la información.
Infâncias matáveis no Brasil Amefricano: reflexões sobre a ideologia do branqueamento e a morte de crianças negras no Brasil
Authors: Salaberry Ismael Leonardi , D'Agord Marta Regina de Leão
Published: January 2024

A partir da expansão diária do número de mortes de crianças, principalmente daquelas não-brancas no território nacional, este artigo se propõe a tensionar a construção dos lugares sociais em que certas infâncias perdem o direito à vida e ao futuro. Em conjunto de desenvolvimentos de Lélia Gonzalez, ligados à categoria da amefricanidade e sua negação na constituição do Brasil; e de elaborações de Ilana Katz, no que tange a definição das crianças-matáveis; buscamos construir uma rede de inteligibilidade para um conjunto de acontecimentos que se apresentam como uma faceta de puro horror no cenário brasileiro. Longe de trabalhar a morte de tais crianças na qualidade de um desvio à lei ou desfiguração do Estado, aquilo que averiguamos é sua característica estrutural e sua função na manutenção de certa lógica nacional. Isto é, a morte de crianças não brancas como perpetuação de uma lógica de Estado baseada na ideologia do branqueamento e na recusa de um futuro que não seja baseado nas ideias da supremacia branca no poder. Assim, infâncias não brancas seriam infâncias impossíveis na Améfrica Brasil
Randomized clinical trial evaluating the efficacy of synbiotic supplementation on serum endotoxin and trimethylamine N-oxide levels in patients with dyslipidaemia
Authors: Salamat Shekoufeh , Jahan-Mihan Alireza , Tabandeh Mohammad Reza , Mansoori Anahita
Published: January 2024

Introduction

Elevated serum endotoxin and trimethylamine N-oxide (TMAO) are associated with metabolic disorders including dyslipidaemia and insulin resistance. This study aimed to evaluate the impact of a 12-week treatment with a synbiotic supplement on serum endotoxin and TMAO levels in patients diagnosed with dyslipidaemia.

Material and methods

A total of 56 patients who met the study inclusion criteria were recruited in this randomized, double-blind clinical trial. Participants were randomly assigned into intervention and control groups and received either synbiotic or placebo sachets twice a day for 12 weeks. The sociodemographic data, food intake, physical activity, and anthropometric indices of participants were assessed before and after intervention. Serum endotoxin, TMAO, and fasting blood glucose (FBG) levels were measured at the baseline and end of the study.

Results

No significant difference in the baseline characteristics of participants in the 2 groups was observed. After the 12 weeks of intervention, the mean of serum endotoxin (p < 0.0001), TMAO (p < 0.0001), and FBG (p < 0.0001) was decreased in patients who received synbiotic supplements while no significant change was observed in the control group. Moreover, a significant positive correlation between changes in endotoxin (r = 0.41, p = 0.041) and TMAO (r = 0.40, p = 0.047) with FBG changes was observed.

Conclusions

A significant reduction in serum endotoxin and TMAO levels, as well as improvements in FBG, following 12 weeks of supplementation with synbiotics, may offer a potential approach for improving metabolic status in patients with dyslipidaemia.
Exploring the key drivers of responsive parenting in mothers and fathers – observed and self-reported responsiveness
Authors: Anikiej-Wiczenbach Paulina , Kaźmierczak Maria , Czerwiński Stanisław
Published: January 2024

Background

This article explores parental responsiveness – the ability of a parent to react to a child’s needs adequately, promptly, and with tenderness and synchrony. Parental responsiveness can be measured using observational and self-report scales. The purpose of this study was to explore whether individual differences in empathy and attachment in mothers and fathers and their satisfaction with their relationship are predictors of parental responsiveness toward infants. Moreover, self-report and observational measures of parental responsiveness were compared.

Participants and procedure

A total of 110 triads (mother, father, and child aged 6-10 months) took part in the free play procedure and parents’ behav-iors towards their children were assessed using the Ainsworth Sensitivity Scale. Moreover, they filled out a set of question-naires measuring parental self-reported responsiveness, empathy, experiences in close relationships and romantic relation-ship satisfaction.

Results

Higher empathic concern was connected with higher responsiveness and this was seen in both individual and partner measures. At the individual level, measures of responsiveness (self-report and observational) were not congruent and proba-bly depended on other variables. In couples, there were positive correlations in three aspects of their family functioning: observed and self-reported parental responsiveness as well as relationship satisfaction.

Conclusions

This study revealed differences between self-reported and observational measures of parental responsiveness, indicating that their results may not always be congruent and could depend on other variables.