bluuebunny/crossref_metadata_2025 huggingface dataset:
"The Impact of Interlingual Equivalence on Vocabulary Development. A Case Study on the Acquisition of Specialised (Technical) Lexis"
Authors:   West University of Timişoara, Miuțescu Maria Cristina
Published: May 2023

This paper explores the correlation between the use of several types of equivalence (e.g., linguistic, paradigmatic, semantic) for ELT purposes and the acquisition of terms and concepts pertaining to the fields of science and technology. It builds on previous research concerning the questionable use of interlingual equivalence (namely foreign language – mother tongue) when seeking vocabulary enhancement on the part of ELLs (English language learners). In order to gain significant insight, mixed research methods have been employed, most notably overt observation carried out among two groups of undergraduates (Architecture and Civil Engineering) paired with assessment strategies.
Analisis Potensi Keuntungan Pekerjaan Grouting Metode Downstage dan Upstage pada Proyek Pembangunan Bendungan Jragung
Authors: Zeriqo Mahardika Asy’ari Muhammad , Priyanto Budi
Published: May 2023

Dalam pembangunan bendungan urugan kekuatan pondasi sangat penting. Pondasi harus dipastikan memiliki daya dukung yang kuat, maka dilakukan perbaikan pondasi dengan cara grouting. Terdapat dua metode saat pekerjaan grouting dilakukan yaitu metode downstage dan metode upstage. Tujuan penelitian ini untuk mengetahui metode mana yang memberikan keuntungan lebih banyak. Metode upstage memiliki biaya sebesar Rp2.704.279.000 dan waktu selama 2350 menit, sedangakan metode downstage memiliki biaya sebesar Rp3.660.159.000 dan waktu selama 2620 menit. Hasil dari analisis ini diperoleh bahwa metode upstage memiliki keuntungan lebih banyak daripada metode downstage baik dari segi biaya maupun waktu.

Kata Kunci: d
Analisa Produktivitas Excavator dan Dump Tuck pada Pekerjaan Timbunan Random Proyek Bendungan Jragung
Authors: Prasetiyo Didik , Priyanto Budi
Published: May 2023

Setiap pekerjaan konstruksi sangat memerlukan bantuan alat berat tidak terkecuali pekerjaan timbunan bendungan. Adapun faktor-faktor yang perlu diperhatikan dalam pemilihan penggunaan alat berat adalah lokasi dan jenis pekerjaan yang akan dilaksanakan, fungsi dan jenis alat berat yang akan digunakan seperti untuk menggali, mengangkut, menggusur, atau meratakan. Excavator CAT 320 GC memiliki produktivitas per hari 548,57 m3, excavator Komatsu PC 200-8M0 produktivitas perharinya 486,76 m3, dump truck Hino 260 TI memiliki produktivitas 102,40 m3 dan dump truck Hino 500 FG 235 JJ produktivitas perharinya 88,90 m3. Jumlah alat berat efektif adalah 1 excavator CAT 320 GC, 1 excavator Komatsu PC 200-8M0, 6 dump truck Hino 260 TI dan 5 dump truck Hino 500 FG 235 JJ. Alat berat yang dibutuhkan untuk menyelesaikan pekerjaan timbunan random sesuai dengan target adalah 5 kombinasi yaitu 5 excavator CAT 320 GC, 5 excavator Komatsu PC 200-8M0, 30 dump truck Hino 260 TI dan 25 dump truck Hino 500 FG 235 JJ.
Potentiel agronomique de deuxième cycle de production des bananiers installés en association avec les arbres forestiers en conditions de Kinshasa, RD Congo
Authors: Bangata Bitha Nyi Mbunzu Jean Christian
Published: May 2023

Le but de cette étude est d’améliorer la production des bananes par l’approche sylvo-bananière. Spécifiquement, cette étude vise à évaluer l’impact de l’association bananiers-Arbres forestiers sur le comportement de cultivars de bananier au deuxième cycle de production. Cinq cultivars de bananiers étaient associés, en culture intercalaire, avec les essences forestières arborescentes non légumineuses (EFANL) suivant un dispositif factoriel. Après avoir récolté la production du premier du premier cycle, les pieds reproducteurs ont été retirés pour laisser la place aux rejets successeurs; Et l’évaluation du comportement de ces derniers a fait l’objet de cette étude. Il se dégage de résultats obtenus que le cultivar Nsikumuna se soit révélé plus performant en association avec les essences forestières arborescentes. Le cultivar Bubi s’est par contre révélé moins performant. Quant aux EFANL sélectionnées, Maesopsis eminii Engl. reste l’espèce qui s’est démarquée. Et cela parce qu’elle a influencé positivement la croissance et production des cultivars de bananiers de plus que toutes les autres. Des études ultérieures sont souhaitables en vue d’évaluer la durabilité d’une exploitation sylvo-bananière basée sur les cultivars Nsikumuna et Ndongila avec Maesopsis eminii Engl. comme essence forestière. Mots clés : Agroécosystème, arbres forestiers-bananiers, durabilité, productivité, Kinshasa.
Pengaruh Kompetensi Kerja dan Kepuasan Kerja Terhadap Kinerja Karyawan PT Telkom Akses Jakarta Utara
Authors: Hanum Qonita , Ali Syarif , Min Fadlillah Alnisa
Published: May 2023

Untuk mengetahui seberapa besar kinerja yang dihasilkan karyawan, perusahaan perlu melakukan analisa capaian kinerja. Pada PT Telkom Akses sendiri, capaian kerja karyawan disusun dalam tabel performansi kerja yang disusun setiap bulannya, data ini kemudian nantinya akan direkapitulasi pada akhir periode kerja sebagai alat untuk menilai sejauh mana kinerja karyawan yang dihasilkan. Tujuan dari penelitian ini adalah untuk mengetahui dan membuktikan mengenai pengaruh kompetensi kerja dan kepuasan kerja terhadap kinerja PT Telkom Akses Jakarta Utara baik secara parsial ataupun secara simultan. Metode yang digunakan pada penelitian ini adalah metode kuantitatif, sehingga dalam pengambilan datanya diungkapkan melalui angka atau skor, dan disusun menggunakan skala pengukuran Likert. Kemudian hasil dari perhitungan skala ini dapat dijadikan analisis deskrtiptif. Hasil penelitian ini, dapat diketahui bahwa kepuasan kerja mempengaruhi kinerja karyawan. Koefisien determinasi (R-squared) sebesar 0,395 yang artinya 39,5% variabel kinerja dipengaruhi oleh kepuasan kerja. Dari penelitian ini dapat disimpulkan bahwa kompetensi kerja dan kepuasan kerja memiliki pengaruh signifikan terhadap kinerja karyawan PT Telkom Akses Jakarta Utara baik secara parsial maupun secara simultan.
Analisis Sistem Pengendalian Internal Dalam Meningkatkan Efektivitas Pembiayaan Gadai Syariah (Studi Kasus Pada Pegadaian Syariah Awirarangan Kabupaten Kuningan)
Authors: Akbar Hidayat Ryan
Published: May 2023

Pegadaian Syariah Awirarangan Kabupaten Kuningan merupakan salah satu Lembaga Keuangan Syariah berbasis bukan bank, yang mana kegiatan utamanya adalah menyalurkan pembiayaan dengan sistem gadai syariah (rahn). Produk rahn yang dimiliki sudah menjadi kebutuhan utama yang dipakai oleh berbagai nasabah, dimana untuk memenuhi kebutuhan utama dan kebutuhan konsumtif. Dalam kegiatan operasional Pegadaian Syariah Awirarangan terdapat pengendalian internal  di dalamnya, fungsi pengendalian internal adalah untuk mengatasi resiko yang akan timbul dalam kinerja pegawai sehingga dapat melancarkan aktivitas kegiatan perusahaan dan membawa perkembangan perusahaan kearah yang lebih baik lagi. Penelitian ini bertujuan untuk mengetahui analisis sistem pengendalian internal dan efektivitas dari pembiayaan gadai syariah serta perkembangan produk yang mana membawa perkembangan yang lebih baik lagi Pegadaian Syariah Awirarangan Kabupaten Kuningan dalam kegiatan operasionalnya. Metode yang digunakan adalah metode kualitatif deskriptif dengan penelitian lapangan. Data yang dikumpulkan dengan cara observasi, wawancara dengan pimpinan cabang, manajer, pengelola unit, dan para pegawai lainnya serta dilengkapi oleh dokumentasi untuk melengkapi dan memberikan informasi dalam proses penelitian. Hasil dari penelitian ini bahwa analisis sistem pengendalian internal yang diterapkan berdasarkan komponen pengendalian internal dimana 1. Lingkungan Pengendalian bertujuan agar terciptanya lingkungan kerja yang harmonis. 2. Penaksiran Resiko dilakukan agar dapat meminimalisir resiko yang akan muncul dikemudian hari. 3. Aktivitas Pengendalian yang dapat menjadi tolak ukur perusahaan. 4. Informasi dan Komunikasi sehingga dapat mencakup berbagai pelaporan dan kepatuhan peraturan. 5. Kegiatan Kontrol bertujuan untuk memberikan penilaian kinerja rutin dan dapat memperbaiki kinerja yang kurang baik. 6. Job Description tidak lain untuk mengatur kinerja pegawai sesuai dengan kemampuannya masing-masing. Selain itu pada perkembangan perusahaan dimana produk gadai syariah (rahn) membawa kemajuan dibidang laba dan citra perusahaan dimata masyarakat, dan dapat memberikan manfaat kepada kedua belah pihak.
Investigation of Manufacturability of WC Particle Reinforced Steels by Powder Metallurgy Method
Authors: Gökçe Hasan
Published: May 2023

Stainless steels are the development of low-alloyed or unalloyed steels. Stainless steels arewidely used in industry and biomaterial fields due to their advanced properties such as superior mechanicalproperties, resistance to corrosion, and use as a biomaterial. Graphite, iron, titanium, vanadium and tungstencarbide were used in this study. By PM method, 0.05 wt% and 0.1% WC were added into graphite, ironand titanium powders. The powders were subjected to mechanical alloying process with a mechanicalalloying device at 400 rpm for 60 minutes. Samples of each composition were formed by cold pressing themixed powders with a one-way press device under 600 MPa pressure in the mold produced. After pressing,it was sintered for two hours at 1300°C in an argon atmosphere gas environment. Production process,microstructure analyzes were done.
Artificial Intelligence and Sustainability
Authors: Cihan Pınar
Published: May 2023

Sustainability is one of our most important global goals. To achieve this goal, many areas suchas environmental awareness, efficient use of resources, and waste management need to be addressed.Artificial intelligence has become an important tool to achieve this goal by offering various applications indifferent sectors of sustainability. For example, artificial intelligence technologies can be used to producesustainable solutions in areas such as energy and resource efficiency, agriculture, water management, wastemanagement, and transportation. Additionally, artificial intelligence can also be used for monitoring andpreventing environmental damage. However, there are potential risks of artificial intelligence technologiesin sustainability. Therefore, in order to use artificial intelligence technologies in line with sustainabilitygoals, ethical and legal regulations should be increased, as well as user awareness. This study presents aperspective on the importance and applications of artificial intelligence technologies in sustainability, andhow these technologies can contribute to sustainability goals.
zı Pancarda Toplam Fenolik Madde ve Antioksidan Aktivitesi Üzerinde Etkisinin İncelenmesi
Authors: ALKAYARI Rama , SAHIN Zuhal , SONMEZ Fatih , KUCUKISLAMOGLU Mustafa
Published: May 2023

Kırmızı pancar (Beta vulgaris L.), renk pigmentleri içeren zengin bir fenolik madde kaynağına veayrıca yüksek antioksidan kapasiteye sahiptir. Fenolik madde miktarları ve antioksidan aktiviteleriekstraksiyon koşullarına (pH, süre vb.) bağlı olarak değişmektedir. Bu çalışmada kırmızı pancardan farklıpH değerlerinde (pH 4-10) hem 1 saatlik hem de 24 saatlik ekstraktları elde edilmiştir. Elde edilen buekstraktlar toplam fenolik içerikleri ve antioksidan aktiviteleri açısından değerlendirildi. Sonuçlar, toplamfenolik madde içeriğin 0,55±0,02 ile 2,30±0,19 mg GAE/g fw arasında değiştiğini ve en yüksek içeriğe 24saat pH 4 ekstraksiyon koşullarında ulaştığını göstermiştir. Kırmızı pancar ekstraklarının IC50 değerleri pH4’de 24 saat ekstraksiyon koşullarında DPPH aktivitesi 0,84±0,04 mg/mL olarak, ABTS aktivitesi için eniyi IC50 değerleride aynı koşullarda 1,46±0,42 mg/mL olarak belirlenmiştir.
Electrochromic Glass Design with Solar Energy
Authors: Carbas Buket Bezgin , Düzgün Senem
Published: May 2023

With the effect of the use of non-renewable energy sources, our world is facing the danger ofglobal warming. The use of fossil fuels increases the rate of carbon dioxide emitted into the atmosphere,and thus, global warming, unfortunately, brings climate changes with it. Minimizing this danger can onlybe achieved by turning humanity towards renewable energy sources. Solar energy is a reliable,environmentally friendly and inexpensive source. The aim of this study is to perform the electrochromicglass by using solar energy without any electricity costs and thus to encourage people to more renewableenergy technologies. In this study, it is desired to present a new technology design that is an alternative tothe classical window glasses used in our country by using solar energy. The solar panel converts the sun'senergy into electrical energy by using solar energy, and with this electrical energy, the opaqueelectrochromic glass changes color and becomes transparent. Thus, the glass makes the interior of the roomshow with this color change. This system, which works with a photovoltaic panel, operates theelectrochromic glass with solar energy without the need for extra energy. For example, with this system, italso eliminates the need for curtains or roller blinds used in working and living areas and provide ease ofuse according to the desired conditions. This system can be used not only for this purpose, but alsoanywhere that is required for smart glass design and has solar energy potential. For this study,electrochromic smart glass obtained by placing polymer dispersed liquid crystal (PDLC) smart materialand this material was sandwiched between indium tin oxide window films with the help of Polyvinyl butyral(PVB) layer. This electrochromic glass system is designed by connecting the connection cable and the onoff switch cable to the photovoltaic panel. In this study, electrochromic glass performance was tried to beanalyzed depending on the exposure time of the photovoltaic panel in the sun.
Chatbots in Education: The impact of Artificial Intelligence based ChatGPT on Teachers and Students
Authors: Annuš Norbert
Published: May 2023

The assimilation of artificial intelligence into education is an inevitable phenomenon. Intelligent tools provide opportunities such as personalized instruction, automated assessment and, last but not least, teaching with virtual assistants or chatbots. Chatbots and other virtual assistants have been on the market for years and have been used for educational purposes on various Q&A platforms. ChatGPT, however, can be considered as an intellectual revolution of chatbots that have been released so far. ChatGPT has taken the concept of artificial intelligence to a new level and it was inevitable that it would make its debut in education. However, in schools, this level and relative novelty can bring not only benefits but also dangers. In this article, we discuss the potential of ChatGPT in the educational process. We look at the impact it can have on students, pointing out both the positives and the negatives. We then look at the opportunities for teachers. Finally, conclusions are drawn and suggestions are made as to the aspects that teachers and students need to adhere to in order to effectively implement ChatGPT in their everyday education.
YSZ Termal Bariyer Kaplamanın Elektroforetik Nano-YSZ Kaplama ile Korozyon Direncinin İyileştirilmesi
Authors: ÖZÇELİK Abdulkadir , AVCI Ali , KARABAŞ Muhammet , AKDOĞAN EKER Ayşegül
Published: May 2023

Termal bariyer kaplamalar başta jet motorları olmak üzere türbinlerde kanatçık, egzoz ve yanma odası duvarı gibi sıcaklığa maruz kalan parçaların korunmasında kullanılmaktadır. Yüksek ısıl dayanımı, düşük ısı iletkenliği, yüksek termal şok dayanımı ve mikro yapısal özelliklerinden dolayı %7-8 itriya ile kararlı hale getirilmiş zirkonyum oksit (YSZ) malzemesi termal bariyer olarak yaygın olarak kullanılmaktadır. Çalışma kapsamında, atmosferik plazma sprey (APS) yöntemi aracılığıyla üretilen YSZ kaplamanın üzerine elektroforetik biriktirme (EPD) yöntemi ile nano-YSZ kaplanmış ve sürekli, yoğun mikro yapı özelliklerine sahip bir seramik katman elde edilmiştir. Üretilen nano kaplamaların üzerine belirli oranda kalsiyum, magnezyum, alüminyum ve silisyum tozları (CMAS) ve V2O5-Na2SO4 tozları konularak 1050 °C’de kutu fırında 6 saat tutularak sırasıyla CMAS ve sıcaklık korozyonu testlerine tabi tutulmuştur.  Korozyon sonrası ve öncesi kaplamaların mikro yapıları, yüzey pürüzlülükleri, porozitesi alan emisyonlu taramalı elektron mikroskobu (FESEM) ve taramalı elektrom mikroskobu (SEM) ile incelenmiştir. Enerji Dağılım Spektroskopisi (EDS) analizi sonuçlarına göre nano-YSZ kaplanmış numunelerde korozyon ürünlerinin bağ katmana difüzyonu önemli ölçüde düşürmüştür. X ışınları analizi (XRD) sonuçlarında, itriya (Y2O3) ve V2O5 bileşiğinin reaksiyona girerek YVO4 bileşiği oluşturduğu görülmüştür. Çalışma sonucunda yüzeydeki ve yüzey derinliklerinde çatlak ve porozite miktarları geleneksel termal bariyer kaplamalara kıyasla oldukça düşük çıkmıştır. Yoğun bir katman üretilmiştir, izotermal CMAS ve izotermal sıcak korozyon testleri sonucunda YSZ performansı iyileştirilmiştir.
Modeling COVID-19 Binary Data in the Aspect of Neoplasms as a Potential Indicator of Cancer by Logit and Probit Regression Models
Authors: İyit Neslihan , Sarı Esra , Sevim Ferhat
Published: May 2023

In this study, the effects of disability-adjusted life years (DALYs) from neoplasms and concomitant non-communicable diseases (NCDs) on total deaths from the COVID-19 pandemic until 21 July 2021 are examined globally for 179 countries. For this purpose, the explanatory variables are taken as DALYs as a measure of total burden of diseases in life lost years and lived with a disability years from neoplasm and NCDs. In this study, the total number of deaths caused by the COVID-19 pandemic has been made categorical with the help of the indicator variable and then taken as the response variable. Thus, in this study, the effects of neoplasms and concomitant NCDs on the COVID-19 pandemic are investigated by using binary logit and binary probit regression models in the family of generalized linear models (GLMs) as statistical methods. Specific to this study, the superiority of the probit model which is based on the assumption that the errors have a normal distribution in the statistical sense over the logit model which is based on the assumption that the errors have a logistic distribution is emphasized. As principle results and major conclusion from this study, neoplasms, cirrhosis and other chronic liver diseases, cardiovascular diseases, skin and subcutaneous diseases and other non-communicable diseases have been found to have statistically significant effects on deaths due to the COVID-19 pandemic.
Short-Term Load Forecasting Based on Bayesian Ridge Regression Coupled with an Optimal Feature Selection Technique
Authors: Ashraf Abdullah , Haroon Shaikh Saaqib
Published: May 2023

Load forecasting has been an important aspect in power system operations. The increase in the integration of different renewable energy resources during past decades has made it even more crucial as an accurate load forecast can be highly beneficial for the energy market as well as the ongoing economic dispatch and unit commitment problem. The increased influence of artificial intelligence and machine learning in electrical engineering has also caused an improvement in load forecasts immensely. This study presents a short-term load forecasting methodology using Bayesian Ridge Regression paired up with an optimal feature selection technique which is a combination of Coyote Optimization Algorithm and Quadratic Discriminant Analysis. The test systems used in the study are based on the historical load data obtained from publicly available API offered by PJM data miner 2 and the weather data obtained using Visual Crossing. Before the application of the feature selection technique, the features were engineered by lagging the weather and the load data. The results of this method are compared with multiple state-of-the-art load forecasting methods including Gradient Boosting Regressor, Random Forest Regressor, Ensemble from ElasticNet, and Bagging with Decision Tree. The proposed method proved to be superior as it showed a noticeable decrease in mean absolute percentage error and root-mean-square error.
OKUL MÜDÜRLERİNİN ÖĞRETİMSEL LİDERLİK DAVRANIŞLARINA İLİŞKİN SİSTEMATİK BİR DERLEME ÇALIŞMASI
Authors: DOLAPCI Erhan , ULUĞ Feyzi
Published: May 2023

Bu çalışmada, Türkiye’de okul müdürlerinin öğretimsel liderlik davranışları konusunda, 2010-2020 yılları arasında yayımlanmış olan akademik çalışmaların sistematik olarak incelenmesi amaçlanmıştır. Sistematik derleme yöntemiyle yapılan bu çalışmanın örneklem grubunu Türkiye’de yayımlanmış yüksek lisans ve doktora tezleri ile Türkiye kökenli hakemli dergilerde yayımlanmış makaleler oluşturmaktadır. Bu bağlamda 55 tez ve 26 makale; yayın yıllarına, yöntemlerine, konularına, bireysel ve örgütsel değişkenler arasındaki ilişkilere, veri toplama araçlarına, örneklemlerine, sonuçlarına ve önerilerine göre değerlendirilmiştir. Veri analiz yöntemi olarak içerik analizi yöntemi tercih edilmiş, veriler derinlemesine incelenmiştir. İncelenen çalışmalarda yoğun olarak öğretmenlerin örneklem grubu olarak tercih edildiği ve örneklem büyüklüğünün nicel çalışmalarda 150-1.300 arası değişmekle birlikte genellikle 200-300 arasında olduğu görülmüştür. Çalışmalar çoğunlukla nicel araştırma yöntemi kullanılarak tarama deseninde yürütülmüştür. Çalışmaların çoğunda öğretimsel liderlik, bağımsız değişken olarak kullanılmış ve diğer değişkenlerle ilişkilerinin anlamlı olduğu görülmüştür. “Öğretimsel liderlik” değişkeniyle birlikte en fazla kullanılan değişken “örgütsel bağlılık” değişkeni olmuştur. Mevcut araştırma sonucunda ulaşılan diğer bir sonuç ise araştırmacıların öğretimsel liderlik ölçeği geliştirmektense alan yazında mevcut ölçekleri kullanma eğiliminde olduğudur.
Strategies for the Prevention of Dental Caries as a Non-Communicable Disease
Authors: Kim Jae-Gon
Published: May 2023

Dental caries is a multifactorial disease influenced by interactions between teeth, biofilm, dietary factors, and various biological, behavioral, sociocultural, and genetic factors. Recent research has shown that dental caries results from dysbiosis, an imbalance in the oral microbial community, shifting the concept from an infectious disease to a non-communicable disease (NCD). Dental caries shares similarities with other chronic NCDs such as cardiovascular diseases and diabetes, as they all relate to dietary intake, lifestyle habits, and environmental factors. Considering the high prevalence of dental caries and its impact on people’s health and quality of life, it is important to understand dental caries as an NCD and develop effective oral health management strategies. Ecological prevention methods and efficient public health policies should be provided to reduce risk factors associated with dental caries.
Three Dimensional Skeletal, Dentoalveolar and Airway Space Changes after Slow Maxillary Expansion in Children
Authors: Kim Nawoon , Lee Daewoo , Kim Jae-Gon , Yang Yeonmi
Published: May 2023

The aim of this study was to investigate the effects of slow maxillary expansion (SME) on the dentoalveolar, skeletal, upper airway, and maxillary sinus using cone-beam computed tomography (CBCT). Twenty-three orthodontic patients (mean age 8.93 ± 1.61 years) who were treated with maxillary expansion using banded hyrax in the Department of Pediatric Dentistry at Jeonbuk National University Dental Hospital were included. According to the expansion speed applied, they were divided into two groups: SME (12 subjects, mean age 8.92 ± 1.45 years) and rapid maxillary expansion (RME, 11 subjects, mean age 8.94 ± 1.84 years). CBCT were obtained before (T0) and after (T1) the treatment and were analyzed with InVivo5 software (Anatomage, San Jose, CA, USA). Descriptive statistics showed no significant differences between the two groups in age, sex, or skeletal maturity. There were significant increases in maxillary width at the dentoalveolar and skeletal levels for both groups. Upper airway volume revealed a significant increase of 38.59% in the SME group and 28.72% in the RME group. However, there was no significant difference between SME group and RME group in all measurements. This study suggested the efficacy of SME in growing patients. SME was effective in increasing not only dentoalveolar and skeletal measurements but also airway volume. Therefore, pediatric dentists should select an appropriate expansion method considering the physiological aspects of periodontal tissues and discomfort in growing children.
Evaluación de tres dosis del bioestimulante Quitosana en el cultivo de pepino (Cucumis sativus) en un periodo tardío
Authors: González-Gómez Luis Gustavo , Falcón Rodríguez Alejandro Bernardo , Jiménez María C. , Jiménez L. , Silvente Jordania , Terrero J. C.
Published: May 2023

Se investigó la efectividad de un bioestimulante producido por el Instituto Nacional de Ciencias Agrícolas, denominado Quitosana, en el cultivo de pepino, Cucumis sativus. Se seleccionó un cantero por tratamiento como unidad experimental con una población de 207 plantas, sembrada a doble hileras en canteros con 30 cm de separación, la variedad utilizada fue la SS-5, aplicándose la sustancia bioactiva Quitosana, la cual se aplicó de manera foliar en las primeras horas de la mañana a los 10 días después de la germinación de las semillas. La propagación de cultivo se hizo a través de siembra directa. El experimento contó con 4 tratamientos consistente en tres dosis y un control, se evaluaron diferentes parámetros reproductivos del cultivo del pepino en el momento de la primera cosecha arribando a importantes conclusiones sobre el efecto de las dosis evaluados en el crecimiento y desarrollo del cultivo.
Efectos del ozono troposférico sobre cultivos de ajo, Allium sativum y tabaco, Nicotiana tabacum en Cuba
Authors: Andreu Rodríguez Carlos Manuel , Cupull Santana René , Pérez Padrón Gilberto , Morales Gómez Yolanda
Published: May 2023

En los últimos años se incrementaron los daños en el ajo (Allium sativum, Liliaceae) y el tabaco (Nicotiana tabacum, Solanaceae), presumiblemente por causa del ozono troposférico (O3) en Cuba. Los síntomas en las hojas de estos cultivos causan grandes pérdidas económicas, por lo que el objetivo de este trabajo fue el de caracterizar los efectos del gas contaminante sobre estas especies de importancia en la agricultura. Los resultados de la reseña indicaron que en las condiciones de Cuba, la incidencia de O3 es alta entre los meses de Diciembre y Febrero y la sintomatología típica consistió en manchas y tizón foliar pudiendo causar la muerte de las plantas afectadas.
Surface Character of Magnetic Ce-doped TiO2 for Photocatalytic Performance Enhancement
Authors: Rahmiati Tia , Chen Ching-Cheng , Saad Siti Asmahani , Eko Nugroho , Apriana Asep
Published: May 2023

Using a modified sol-gel method for magnetic photocatalyst, the core shell structure of Ce-doped TiO2@SiO2@ferrite composite nanoparticles (NPs) was created. X-ray diffraction (XRD), Brunauer–Emmit–Teller (BET), and a superconducting quantum interference device (SQUID) were used to examine the physicochemical properties of the products as they were prepared. The ultraviolet-visible spectrometry (UV-vis) was used to measure the catalyst's photocatalytic activity. On the composite NPs' outer shell coating, the anatase phase related to the TiO2 structure was constructed. On the Ce-doped TiO2 layers, a mesoporous structure with uniform pore size was created, resulting in a specific surface area of 111.916 m2g-1. In the meantime, the thin TiO2 coating contained the redox couple of Ce3+ and Ce4+. An external magnetic field can also be used to separate the catalyst's magnetic NPs from the reaction system. In the aqueous solution of methylene blue (MB), the degradation efficiency and product performance were both 50 percentage
Dynotest Design Analysis for Electrical Converted Vehicles
Authors: Sumarsono Danardono Agus , Zainuri Fuad , Hidayat Tullah Muhammad , Noval Rahmat , Prasetya Sonki , Subarkah Rahmat , Rahmiati Tia , Widi Widiyatmoko , Ridwan Muhammad
Published: May 2023

The study comprises dynotest design and analysis to measure torque and horsepower. Basically, a dynotest carried out by apply certain load to the axle of a combustion motor through the braking mechanism of its crankshaft. Due to the high price of a Dynotest unit in the market, it is relatively difficult for a developing institution to own it on their site. The study target to design a simple and good accurate Dynotest within a reasonable price. The study used a common standard method for design analysis which rely on function and structural approach. Functionally, Dynotest is designed to be used to an ouput of an electical motor. Loading on motor shaft was done by disc brake braking mechanism. Structurally, Dynotest was designed to use rollers. As a main component, its mounting construction is connected to a motor to generate electrical power. Power transmitted from the motor to Dynotest through a center joint shaft, torque measured by load cell while the rotation of shaft itself counted by a digital tachometer. Test result show that electricity was produced from the simple construction and Dynotest functioned well in measuring it. Measurement data of roller support shaft performance showed a motor torque performance curve which are similar with the typical of similar Dynotest. Construction Test done by applying Solid Work software analysis to some components partially on rollers and on the construction assembly as a whole unit
Allium Cepa Remediates Oxidative Stress-Mediated Hepatic DNA Damage in Cadmium-Exposed Rats through Enhanced p53 Expression and Inhibition of Bcl2
Authors: Ige Serah Funke ,   Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria, Adeniyi Mayowa Jeremiah , Ademilua O. B. , Fatola A. O. , Adeyemi I. A. ,   Edo University Iyamho, Iyamho, Nigeria,   Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria;
Published: May 2023

BACKGROUND: Cadmium (Cd), a naturally occurring toxic metal, in addition to being cytotoxic, has been shown to be responsible for inducing free radical-dependent DNA damage in cells. Allium cepa is also known to ameliorate cadmium sulphate-induced organ toxicity through its antioxidant potential. The study was carried out to determine the ameliorative mechanisms of Allium cepa extract (ACE) in oxidative stress-mediated hepatic DNA damage in rats exposed to cadmium sulphate. MATERIALS AND METHODS: Twenty male adult wistar rats weighing 160-180g were used for this study. They were divided into four groups; group one (control), group two (Cd group), group three (Cd + ACE group) and group four (ACE group). Rats were administered 15 mg/kg CdSO4 and Allium cepa Extract (1 ml/100 g BW) for 28 days once per day (p.o.). Body weight changes (BWC), organ/body weight (OBW) ratio, feed conversion ratio (FCR), daily water intake (DWI) and daily feed intake (DFI) were monitored. Superoxide Dismutase (SOD), Catalase (CAT) activities and % DNA fragmentations were examined spectrophotometrically while immunohistochemical expression of Tumor Suppressor protein (p53) and cytoplasmic Bcl2 were also studied. Results were analyzed using SPSS 21 via Analysis of Variance (ANOVA). RESULTS AND DISCUSSION: Exposure to CD caused no significant change in BWC, OBW, FCR, DWI and DFI, but significantly decreased SOD and CAT activities. Significantly increase in % DNA fragmentation and Bcl2 expression and inhibited p53 expression were also observed in CD exposed rats. Decreased SOD and CAT activities, increased DNA fragmentation and Bcl2 expression together with inhibition of p53 expression orchestrated by cadmium exposure were ameliorated by Allium cepa treatments. CONCLUSION: Allium cepa remediates oxidative stress-mediated hepatic DNA damage by promoting P53 expression and inhibiting Bcl2 protein in rats exposed to cadmium sulphate.
The Rarity of Spina Bifida in a Rural Community in a South-Western State of Nigeria
Authors: Okunlola Abiodun I. ,   Department of Surgery, Federal Teaching Hospital, Ido-Ekiti/ Afe Babalola University, Ado-Ekiti, Nigeria, Adeyemo Olabisi T. , Adeniyi Augustine A. , Oni Ayobami O. , Akinyoade Richard A. , Babalola Olakunle F , Okunlola Cecilia K. ,   Department of Obsterics and Gynaecology, Federal Teaching Hospital, Ido-Ekiti/ Afe Babalola University, Ado-Ekiti, Nigeria;,   Department of Surgery, Federal Teaching Hospital, Ido-Ekiti/ Afe Babalola University, Ado-Ekiti, Nigeria;,   Department of Medicine, Federal Teaching Hospital, Ido-Ekiti, Nigeria
Published: May 2023

Background: Spina bifida is a form of birth defect involving the vertebral column and it can be classified as occult or overt spina bifida. The most clinically significant and common spina bifida is myelomeningocele. The prevalence of the spina bifida is low in Africa but still varies from one region to another. Aim: To document the prevalence of spina bifida in our community. Materials and Methods: A retrospective review of the labour ward register over thirteen years period from 2007 to 2019 was carried out. The total number of deliveries was evaluated. Spina bifida was restricted to cases of obvious neural placode at delivery whether it is myelomeningocele or myelocele. Cases of cutaneous stigmata were not included. Results: There was a total of 4,473 deliveries over the thirteen years in review. There was no case of spina bifida over this thirteen years period. Conclusion: There is a rarity of Spina bifida in our community which is in support of the available literature. Regular intake of natural food as well as a near natural relatively undisturbed rural environment may account for this rarity. A further well planned population based study is needed to highlight the favourable factors that can benefit region with high prevalence of the spina bifida.
Effect of Dioscorea hispida var. Daemona (Roxb) Prain & Burkill on Oxidative Stress and DNA Damage in the Liver of Pregnant Rats
Authors: Ibnu Rasid Elda Nurafnie ,   Toxicology and Pharmacology Unit, Herbal Medicine Research Centre, Institute for Medical Research, Ministry of Health, 50588 Kuala Lumpur, Malaysia, Azlan Abdul Rahim , Mamat Daud Nur Fatihah , Shah Tengku Aideed , Saad Wan Mazlina Md. , Awang Norizah , Muhammad Hussin ,   Department of Medical Laboratory Technology, Faculty of Health Sciences, Universiti Teknologi MARA, UiTM Puncak Alam,42300 Bandar Puncak Alam, Selangor, Malaysia,   Toxicology and Pharmacology Unit, Herbal Medicine Research Centre, Institute for Medical Research, Ministry of Health, 50588 Kuala Lumpur, Malaysia;
Published: May 2023

Dioscorea hispida var. daemona (Roxb) Prain & Burkill is an intoxicating yam which is commonly known as ‘ubi gadong’ in Malaysia and traditionally consumed in various part of the world. However, the tuber of this plant is poisonous as it contains toxic compound, dioscorine. The aim of this study was to evaluate the hepatoxicity effect of D. hispida aqueous extract (DHAE) by measuring the level of oxidative stress and DNA damage in the liver of pregnant Sprague Dawley (SD) rats. Twenty pregnant rats were randomly divided into four groups (n=5) consisting of control, low 500 mg/kg, medium 1000 mg/kg and high 2000 mg/kg group that were administered with different concentrations of D. hispida by oral gavage for 15 days from gestation day (GD) 6 until 20. At GD 21, the liver was collected and oxidative stress (reactive oxygen species (ROS) level, H2O2 concentrations, superoxide dismutase (SOD) lipid peroxidation malondialdehyde (MDA) and DNA damage were measured. No significant changes on ROS level and H2O2 concentration in 1000 and 2000 mg/kg body weight DHAE except for the lowest concentration group (p<0.05) when compared to control whereas the SOD activity was comparable with untreated rats. Increase of MDA level and DNA damage was observed in all treated groups. In conclusion, DHAE did not increase oxidative stress in maternal rats’ liver however may induces DNA damage. Further study is required to confirm these findings through a longer DHAE administration to understand the mechanism involves in its effects .
Keratinocyte Proliferative and Wound Healing Effects of Edible Bird's Nest Extract on Human Skin
Authors: Terazawa Shuko ,   Research Development Division, Oryza Oil and Fat Chemical Co., Ltd., 1 Numata, Kitagata-cho, Ichinomiya, Aichi 493-8001, Japan, Shimoda Hiroshi
Published: May 2023

Edible bird’s nest is a delicacy of Chinese cuisine. Its major components include mucin and sialic acid in addition to epidermal growth factor-like substances. However, its effects on skin cells and skin barrier function currently remain unknown. Therefore, we herein examined the effects of edible bird’s nest extract (EBN) on skin cell proliferation, wound healing, and tight junction proteins as well as human skin barrier function. The results obtained showed that EBN (0.1%) enhanced the proliferation of keratinocytes and fibroblasts as well as the migration and tight junction protein expression by keratinocytes. The oral ingestion of EBN (70 mg/day) standardized by sialic acid for 1 month reduced transepidermal water loss, the shallow wrinkle area, and dermal thickness. These results suggest that EBN exerts epidermal protective and smoothing effects through keratinocytes. Thus, EBN is a valuable ingredient for maintaining healthy skin.
A Randomised Controlled Study of High Dose Statin Versus Statin Plus Ezetimibe Therapy in Patients with Acute Coronary Syndrome
Authors: Palathingal John Thomas ,   Clinical Pharmacologist, HCG Cancer Centre, Healthcare Global Enterprises, Kalburagi, Karnataka-585102, India, Vijayan Deni , Rajan C Drisya , Stanly Irene , Jamshad T. P. , Linu M. P. ,   Practice, Al Shifa College of Pharmacy, Kizhattur- 679325, Perinthalmanna, Malappuram, Kerala, India
Published: May 2023

AIM: To assess the efficacy of statin and ezetimibe combination compared to statin given as monotherapy in maintaining optimum cholesterol level. METHODOLOGY: A Prospective Randomized Interventional study was conducted including 68 patients with ACS with the duration of six months carried out in the Cardiology Department of tertiary care Hospital, Kerala. SPSS 20 version was used to perform the statistical analysis of the collected data. Independent t-test was used to compare quantitative variables between control and case group and paired t-test for comparison of demographic variables. The level of significance was 0.05. RESULTS AND DISCUSSION: Mean LDL-C of control group at baseline was found to be 129.64mg/dL and that of case group was found to be 125.73mg/dL. Mean difference was found to be 3.90. On using Independent t-test, there was no significant difference in LDL-C between the groups with p= 0.664 (t value= 0.437). Mean LDL-C of control group on review was found to be 125.42mg/dL and that of case group was found to be 109.33mg/ dl. Mean difference was found to be 16.09. On using Independent t-test, there was significant difference in LDL-C between the groups with p<0.05 (t value=2.036). CONCLUSION: The LDL-C levels plummets the most in patients who are at highest risk of recurrent coronary event. Therapy using a combination of statin and ezetimibe resulted in remarkable reduction in elevated lipid cholesterol with a similar safety profile compared with doubling of statin dose. Its superior lipid altering efficacy by dual inhibition of cholesterol synthesis and intestinal absorption makes it a drug of choice for ACS.
Effect of n-power scheme on youth empowerment in Anyigba, Dekina local government area of Kogi state
Authors: Ifatimehin Olayemi Olufemi ,   Kogi State University, Isyak Ibrahim Ogirima , Omale Danjuma ,   Kogi State University,   Kogi State University
Published: May 2023

Unemployment is a major problem ravaging Nigeria’s population today and youths are worst hit by it. According to the National Bureau of Statistics, Nigeria’s youth unemployment reached an all-time high of 29.7% in 2018 with about 13.2 million youths becoming unemployed. As a result, most youths lack the means to cater for their basic necessities. In the above light, the government at several times have created various youth empowerment schemes to empower youths and improve their living standard. The recent of them is the National Social Investment Program (NSIP) introduced in 2015 which consist of National Cash Transfer Programme (NCTP), Trader Moni, School Feeding Program and N-Power. The N-Power program is specifically geared towards empowering youths by training and engaging them in public organisations. Against this backdrop, the study examines the effect of the N-Power scheme on youth empowerment in Anyigba area of Kogi state, Nigeria. The population of the study was put at 491 which is the total number of N-Power beneficiaries in Anyigba in 2016, from which a sample size of 220 was obtained using Taro Yamane's. Data for the study were sourced primarily via questionnaire and secondarily via web articles, journals, seminar reports, etc. Descriptive and inferential statistics and One-Way ANOVA analysis were used for the data analysis and test of hypothesis. The study found that N-Power scheme has to a very large extent empower the youths in Anyigba in skills acquisition, financial status, self-reliance and productivity among the youth. The study also gave some recommendations among which is that the government should initiate more youth empowerment programs for development, the government should provide mandatory training and workshops in the area of ICT and agriculture to enhance the beneficiaries’ technical skills.
The paradigm shift in war reporting: the rise of journalism of attachment. A case study of the Bosnia war of 1992
Authors: Jepchirchir Julie ,   Girne American University, TRNC
Published: May 2023

Journalism of attachment; defined by its founder, Dr. Martin Bell as “journalism that knows and cares” (Bell, 1998, pp.63) is one of the subjective methods of war reporting. The elements of journalism of attachment are totally opposite of objectivity, truthfulness, accuracy, transparency and impartiality; aspects that are considered guiding principles of journalism as a profession. Despite this, journalism of attachment argues that it provides the “naked truth in warzones”, a characteristic that lacks in bystander journalism; as it is restricted by the code of ethics that govern it (Bell, 1998). Using qualitative research design, this study determined the paradigm shift in war reporting in line with the emergence of journalism of attachment. Content analysis was performed on all new reports of the Bosnia war of 1992 as reported by Dr. Bell. His interviews from 1992 to date as well as two of his books; “In Harm’s Way; Reflection of a war zone thug (1997)” and “Through Gates of Fire; A Journey into World Disorder (2003)”; were also analysed. The findings indicated that Dr. Bell’s use of journalism of attachment in the coverage of the Bosnia war steered debates among academics as well as professions in the journalism industry. It thus created a paradigm shift in subjective reporting based on the debates for and those against the practice of journalism of attachment in war reporting. The study therefore concluded that there is need for academics, critiques and professionals in the journalism industry to find a way to balance both aspects of subjective reporting (emotional/ passionate reporting) and professional reporting (objectivity, neutrality, impartiality, and fairness), in the coverage of wars and conflict.
Assessing Wetland Degradation in a Growing Urban Area: Case of Nsooba in Kampala, Uganda
Authors: Warsame Ali ,   Kampala International University, Luyiga Suzan , Akiyode Oluwole ,   Kampala International University,   Kampala International University
Published: May 2023

Increasing population and urbanization of most of the cities with their continuous socioeconomic development and experiences put pressure on the components of the environment that are essential for their sustainable development. This includes urban wetlands which are parts of the veritable resources for the sustenance of societal ecosystems. This study assesses the process of wetland degradation in Nsooba, Kampala through the identification of the current anthropological activities that encourage the wetland degradation and also examined the levels of the water quality in its pools during the dry and wet seasons. This was done through questionnaire administration and physicochemical analysis. The study identifies the prevalence of constructions activities in the wetland area which crippled the flow of its stream. The results of the physicochemical analysis of the water quality of the pools/channels depicted that the pH values of both the wet and dry seasons were within acceptable limits while the Biochemical Oxygen Demand (BOD5) was above the acceptable limits during the wet seasons signifying moderate organic pollution. In the end, the study advocates the need for the Kampala Capital City Authority (KCCA) to develop a framework that will encourage the sustainability of the city wetlands. This includes enforcement procedures that will control and stop the destructive anthropogenic activities that pervade the wetlands in the city.
Performance Evaluation of the LSBLG 1200/MCF Water-cooled Chiller Air Conditioning System
Authors: Sangotayo Emmanuel O. ,   Kampala International University, Nnamchi Stephen N. , Mundu Mustpha M. , Kibogo Ibrahim ,   Kampala International University,   Kampala International University,   Kampala International University
Published: May 2023

Air conditioners regulate temperature and humidity and improve air quality. After several years of immaculate operation, the system started malfunctioning, resulting in several resident complaints. This study aims to assess the effectiveness of the central water chiller air conditioning system. In order to analyze the effect of local time and temperature on the performance parameters of the LSBLG 1200/ MCF model central water chiller and cooling tower, the intake and output temperatures were measured for a period of 8 hours using the inbuilt temperature display. Coefficients of Performance and Energy Efficiency Ratios of the cooling system were determined using empirical governing equations of the performance parameter, and the SAS package was utilized to construct characteristic curves. The results revealed that local time has a dynamic effect on the performance parameter, but temperature has a direct proportionate effect on the cooling system's effectiveness. The maximum coefficients of performance for the chiller and cooling tower are 52 and 20, respectively. The chiller and cooling tower have respective Energy Efficiency Ratios of 177 and 68. The greatest amount of cooling happened between 1p.m and 3 p.m. A greater coefficient of performance indicates enhanced performance and decreased electrical energy use. Variable speed retrofits are recommended for increasing chiller effectiveness because variable speed drives will benefit the majority of components in a chiller water system.