bluuebunny/crossref_metadata_2025 huggingface dataset:
Differential evolution and cost-maps for needle path planning in Baker’s cyst aspiration
Authors: Ciszkiewicz Adam , Lorkowski Jacek , Milewski Grzegorz
Published: May 2023

Purpose: The Baker’s cysts appear within the popliteal fossa along with the progression of degenerative changes. Removal of its contents through aspiration is often a necessary complement to treatment at various stages of the development of gonarthritis. Methods: The paper presented a procedure for needle automatic needle path planning in cyst aspiration in transverse plane. The method was based on optimization and used a custom objective function, which utilized cost maps obtained from preprocessed, segmented images of the knee. The optimization was carried out with Differential Evolution. Furthermore, a preliminary sensitivity analysis was carried out. The obtained paths were compared to the reference paths proposed by an experienced surgeon. Results: The procedure was tested on 165 numerical simulations. In all of the obtained paths, the needle successfully avoided crucial objects, such as veins, arteries and nerves. Furthermore, the overall travel distance in the joint was also minimized. When compared to the reference from the surgeon, 90% of the paths were almost the same or only slightly different. Furthermore, the remaining 10% of the generated paths were viable but different. Conclusion: Based on the obtained results, the proposed solution could be a viable solution for planning the aspiration of Baker’s cyst.
The influence of isometric rotation of the lower limb on the functioning of the knee joint stabilizers and rotator muscles
Authors: Chrzan Miłosz , Michnik Robert , Myśliwiec Andrzej , Wodarski Piotr , Suchoń Sławomir , Gzik Marek , Mitas Andrzej
Published: May 2023

Purpose: This paper presents an assessment of the influence of isometric rotation of the lower limb in a standing position on the functioning of the muscles stabilizing the knee joint in the frontal plane with the use of modeling the loads on the musculoskeletal system. Methods: The research was carried out in the AnyBody Modeling System software, performing multi-variant simulations of the musculoskeletal system during isometric rotation of the lower limbs. The simulations were carried out using as input data the values of rotating moments and the ground reaction forces acting on foot segments, which were measured using the proprietary Rotenso device and the position of the body segments. Results: The result is the muscular activity of the lower limbs of the selected muscle groups during isometric rotation. Muscle activity was recorded for Sartorius, Tensor fasciae latae, Iliopsoas, Gluteus minimus, Gluteus medius, Gluteus maximus, Piriformis, Quadratus femoris, Obturator internus, Obturator externus, Gemellus inferior, Gemellus superior. Conclusions: Performing isometric rotation allowed for the activation of most of the knee joint stabilizing muscles and rotators of the lower limb. The results indicate that lower limb rotation exercises can be used in physiotherapy in patients with valgus knee.
The influence of three different test positions and thigh asymmetry on measurements of isometric hip flexion strength in men and women
Authors: Mańka Jacek , Bobowik Patrycja , Jaskulski Karol , Wiszomirska Ida , Kaczmarczyk Katarzyna
Published: May 2023

Purpose: The aim of this study was to compare muscle strength at 90° hip and knee flexion as measured in three different positions and to investigate whether an internal or external deficit in the range of rotation in the hip joint affects flexor muscle strength. Methods: We measured the peak muscle torque of rotation in the hip joint, using isometric torquemeter, and hip ROM in healthy participants N = 40, aged 21.6 ± 1.9, in three different measurement positions. We tested for differences between the positions, and for the potential influence of participant’s sex and ROM asymmetry. Results: The measured peak muscle torque was affected not only by sex and the value of hip flexion affect, but also by the position in which it is measured. Subjects with restricted external rotation of the hip joint (CERD) had significantly higher flexor peak muscle torque compared to subjects with restricted internal rotation (CIRD), in all but the supine position. For CERD, the results were: Supine (SuP) 1.02 ± 0.26; Sitting (StP) 1.32 ± 0.58; Standing (SP) 1.53 ± 0.47; and for CIRD, the results were: Supine (SuP) 1.05 ± 0.17; Sitting (StP) 1.05 ± 0.40; Standing (SP) 1.47 ± 0.53. Conclusions: Overall, measurement position and passive ROM significantly influence the peak muscle torque in isometric conditions. Moreover, an imbalance in thigh rotation movement significantly determines the magnitude of muscle torque of the hip flexion movement. Individuals with increased internal-toexternal rotation achieved significantly higher values for flexor muscle torque force moments. Overall, these findings are of importance for interpreting or comparing any reported values for muscle torque force moments
Modern methods of surface modification for new-generation titanium alloys
Authors: Lisoń-Kubica Julia , Taratuta Anna , Goldsztajn Karolina , Antonowicz Magdalena , Walke Witold , Dyner Aneta , Basiaga Marcin
Published: May 2023

The constantly growing need for the use of implants in osteotomy is mainly due to the aging population and the need for long-term use of this type of biomaterials. Improving implant materials requires the selection of appropriate functional properties. Currently used titanium (Ti) alloys, such as Ti6Al4V and Ti6Al7Nb, are being replaced by materials with better biocompatibility, such as vanadium (V) or niobium (Nb), allowing for creation of the so-called new generation alloys. These new alloys, with the incorporation of zirconium (Zr), iron, and tantalum, possess Young’s modulus close to that of a bone, which further improves the improves the biomaterial’s. biocompatibility. This article describes the atomic layer deposition (ALD) method and its possible applications in the new generation of titanium alloys for biomedical applications. Also, the exemplary results of tin oxide (SnO2) thin coatings deposited by ALD and physical vapor deposition (PVD) methods are presented. This study aimed to evaluate the physicochemical properties of a Ti13Nb13Zr alloy used for elements in the skeletal system. As the temperature and the number of cycles vary, the results demonstrate that the surface area of the samples changes. The uncoated Ti13Nb13Zr alloy exhibits hydrophilic properties. However, all coated specimens improve in this respect and provide improved clinical results. after the applied modification, the samples have a smaller contact angle, but still remain in the range of 0–90°, which makes it possible to conclude that their nature remains hydrophilic. Coating the specimens decreased the mineralization risk of postoperative complications. As a result, the biomaterials demonstrated improved effectiveness, decreased complication indicators, and improved patient well-being
Freeze-dried crosslinked anionic hydrogels composed of poly(vinyl pyrrolidone) and poly(vinyl alcohol): synthesis, characterization and degradability performance
Authors: Obaleye Miracle , Kavaz Doga , Olaifa Joshua
Published: May 2023

Purpose: Poly(vinyl pyrrolidone) (PVP) and poly(vinyl alcohol) (PVA) has enticed significant research interest and are acknowledged among the principal volume of synthetic polymers that have been fabricated globally for nearly one century. This is as a result of their excellent attributes which dictated its wide-ranging usage in a range of applications, chiefly in medical field. The investigation is aimed at preparing PVP/PVA hydrogels using freeze drying technique for its characterization and accessing the biodegradability of the prepared hydrogel. Methods: Scanning electron microscopy and Fourier transform infrared spectroscopy were employed for the description of the morphology and chemical composition of the prepared hydrogels. More characterization studies were implemented by measurement of apparent density, porosity, swelling ratio and crystallinity of the fabricated hydrogel with the use of X-ray diffractometer (XRD). The biodegradability of the prepared hydrogel was also carried out in vitro in phosphate buffered saline. Results: As the PVP content increased the percentage of porosities from 45.00 ± 1.00% to 81.80 ± 0.20%, which was also accompanied by an increase in density. The prepared hydrogel showed increase in swelling ratio as the PVP content increased, the highest swelling ratio was found in PP4 with 95.58% with the least swelling time of 4 minutes. Conclusions: To sum it up, PVP plays a role as network and performance regulator in this sort of anisotropic hydrogels. This investigation offers a fascinating means of regulating morphology and general characteristics of the PVA-based anisotropic hydrogels.
Consequences of prolonged sedentary work during the COVID-19 pandemic
Authors: Lis Paulina Katarzyna , Lisiński Przemysław
Published: May 2023

Purpose: The COVID-19 pandemic has reduced physical activity and increased the time spent sitting. Combined with the lack of ergonomics at home workplaces, the risk of discomfort has increased, especially around the cervical spine and upper limbs. Evaluation of the mentioned problem is the subject of the study. Methods: The study used an original questionnaire based on the Nordic Musculoskeletal Questionnaire. The analysis used responses from people who reported discomfort in the form of tingling or numbness in the cervical spine, shoulder, elbow and wrist during the pandemic. Statistical analysis of the results was carried out to formulate conclusions. In addition, individual data were presented as percentages. Results: Considering the working time exceeding 8 hours a day, discomfort in the wrist joint area was most often reported among people working remotely (15.1%). Shoulder complex discomfort was the most common symptom (22%) reported by people working more than 8 hours a day, under the age of 31. In young people, the risk of discomfort in the shoulder, hand and cervical spine area increased. Conclusions: Extended working time is conducive to the appearance of symptoms within the hands. In future studies, it will be necessary to analyze the ergonomic factors responsible for this phenomenon.
The Use of Powtoon in Teaching Reading Recount Text
Authors:   Universitas Internasional Batam, Al Fitri Rika
Published: May 2023

This research is motivated by the development of Powtoon-based learning media. Powtoon media is a web-based application provided for users to create animated presentations using images, provide music. The advantage possessed by powtoon media is that it is able to provide various animated cartoon displays that can attract students' attention to pay attention to the lessons delivered by the teacher. Lessons for the 2021/2022 academic year. This classroom research was carried out in three meetings. The author used one group pre-test and post-test design. Respondents in this study were 4 students of class X IPS-1. The results of this study. Based on the research that has been done, it can be proven by using the results of the pre-test score obtained that has a score of 50,75 and the post-test score has 75,25. The test score has increased with an increase in value of 24,05. Based on this research, it is proven that learning by using video powtoon will have an effect on increasing learning outcomes. Therefore, the powtoon learning media is proven to be able to improve learning outcomes, especially for class X students on recount text.
Appraisals Analysis on the Argumentation Structure of Indonesian Undergraduate Students’ Research Articles
Authors:   Universitas Islam Indonesia, Febriyanti Reddy Alfa Lisa Muslimah , Pradita Intan ,   Universitas Islam Indonesia
Published: May 2023

This research aims to analyze the argument structure of undergraduate students’ research articles that focus on the introduction section. The data collection was conducted by analyzing the proceedings in the "Background" section written by undergraduate students at university in Indonesia. The data were then analyzed by using a corpus. This research found type of argument of this study were proclaim, disclaim, entertain, and attribute. The lexical choice that was used proclaim with a total of 46. The lexemes entertain a total of 37. The next lexical choice that was used is disclaim with a total of 33. Finally, attribute a total of 26 as the lowest engagement in appraisal.
Improving Architecture Students’ Presentation Skills through Flipgrid during Online Learning
Authors:   UKDW Yogyakarta, Susyetina Arida
Published: May 2023

The study aims to explore the use of Flipgrid’s features as online learning tools for the architecture students taking the English for Specific Purposes (ESP) to improve their presentation skills. The present study utilized a case study and involved twenty-six students of the Architecture Department in Universitas Kristen Duta Wacana, Yogyakarta. This study employed a qualitative method. The data were collected from students’ presentation videos uploaded on Flipgrid and interviews. The result of the study revealed that FLIPGRID plays a notable role in improving the students’ presentation skills, especially in their confidence, fluency, facial expressions, and gestures.
Do Textbooks Really Promote Gender Equality?: A Multimodal Analysis of Gender Roles
Authors:   Universitas Jenderal Soedirman, Asriyama Weksa Fradita , Puspita Sari Eka Dyah ,   Universitas Jenderal Soedirman
Published: May 2023

Gender equality has been promoted by UNICEF since 1995. One strategical way to promote gender equality is through education by exposing the youth to nonbiased learning materials. This paper investigates the representation of gender roles in two English textbooks for senior high school students. Gender related images and texts are taken as the data. The data were analysed using Bruggeilles and Cromer’s (2009) framework for gender typical roles. Findings reveal that in both textbooks, males have the roles as leaders in domestic, social, and occupational sphere while females are considered as keepers, protectors, and caretakers in those spheres.
Promoting Autonomous Learning through Online Discussion
Authors:   Universitas Internasional Batam, Pondalos Ezra Christina , Saputri Novi Ernia ,   Universitas Internasional Batam, Pratiwi Theodesia Lady ,   Universitas Internasional Batam
Published: May 2023

An autonomous learning system is being applied to students nowadays. Students are now encouraged and expected to play a more active role in learning. Autonomy learning is intensified to encourage students to be more independent, creative, and responsible for their learning. Through this article, writers explain how to promote autonomous learning. The method used is the library study related to autonomous learning. Writers explain further about the class design to promote autonomous learning and the strengths also weaknesses of this learning system. Based on this article's findings, possible ways are proposed to help and improve the implementation of autonomous learning.
English Teachers’ TPACK Level, Factors, and the Impacts in Vocational High School
Authors:   Universitas Pendidikan Indonesia, Destiani Isti , Setyarini Sri ,   Universitas Pendidikan Indonesia, Rodliyah Rojab Siti ,   Universitas Pendidikan Indonesia
Published: May 2023

This study is aimed to investigate English teachers’ TPACK level and explore its impact on teaching English to Vocational high school students in Garut. In this mixed-method study, questionnaires, interviews, and observation were used as the instruments for collecting the data. The participants of this study were 50 vocational high school English teachers in Garut. After collecting the data from the questionnaire, this study showed various results for each domain. On average, more than 60% of the participants had a high level of TPACK. And the rest of them had an adequate and low level of TPACK. In addition, based on the interview, factors that influenced the differences in TPACK level among the participants were divided into three aspects: technology, pedagogy, and content knowledge. Factors that influence the technology aspects were facilities, technology mastery, and willingness and curiosity. Meanwhile, factors of pedagogy are influenced by teaching experience and strategy, training, and certification from the government. Whereas, factors of content knowledge are caused by educational background, age, and English knowledge mastery. Thus, English teachers with TPACK levels impact their teaching practices in vocational high schools. Most of them applied technology in the classroom, such as using laptops, projectors, audio and video file, PowerPoint, and digital book. Besides, they also used many teaching strategies with English knowledge mastery in teaching so that their students were more enthusiastic about learning English. This study is expected to benefit the teachers as they derive relevant details for their development and professionalism
The Representation of Target Culture in a Locally Published English Textbook
Authors:   Politeknik APP Jakarta, Setiadi Rizki Muhammad Ardian , Simanjuntak Daniel ,   Politeknik APP Jakarta, Mulyo Diningrat Mohammad Santosa ,   Politeknik APP Jakarta
Published: May 2023

Culture is an important part of English language teaching and learning. Students must be exposed to the culture related to the communication skills being taught. Textbook can be a medium for the teachers to present different kinds of culture along with the language content. Therefore, it is essential for an English textbook to properly include cultural contents. This study aims to investigate the target culture included in a junior high school English textbook used by many teachers in Indonesia. Qualitative descriptive design was employed in order to describe the target culture in the textbook without any manipulation to the data. Moran’s (2001) five dimensions of culture that include products, practices, perspectives, communities, and persons was used to analyze the data. The results found 61 items in the textbook that contained references to the target culture. The ways those target culture were presented were not vary. Almost all of those items were presented in words or passages.
Analisa Karakteristik Campuran Aspal Menggunakan Serbuk Kaca
Authors:   Universitas Internasional Batam, Sucipto Sucipto , Sari Yusra Aulia ,   Universitas Internasional Batam
Published: May 2023

Pavement is a space for vehicles to operate, consisting of a composition of materials which is divided into several layers aiming to withstand the weight working on it and distribute them to the layers below. Road Pavement consists of several types, flexible pavement, rigid pavement and composite pavement. Road which is commonly used in Batam city is composite pavement, which is a combination of rigid pavement and flexible pavement. This study discusses the use of glass powder as an alternative to filler in the AC-WC pavement mixture. Waste pieces of glass that are no longer in use are destroyed until they pass through filter no. 200, pieces of glass are easily encountered because of the many furniture that uses glass as the main material. Glass waste as a filler mixture is expected to reduce the budget and reduce glass waste itself. The sample in this study consisted of 3 samples with 3 types of test, conventional asphalt with 4 samples, asphalt with a mixture of 3% glass powder filler with 3 samples, and asphalt with a mixture of 6% glass powder filler with 3 samples. Based on the laboratory tests that were conducted, asphalt that uses glass powder filler as a filler substitute meets the 2018 BinaMarga specifications with the MQ value of 637,235, VIM value of 3,829, VMA value of 18,609 and VFA value of 79,455. Based on this study it can be concluded that glass powder waste can be used as a replacement for pavement fillers.
Analisis Kinerja Struktur Pada Konstruksi Baja dan Konstruksi Beton Bertulang Dengan Analisa Pushover Statik Non-Linear Menggunakan Software ETABS (Studi Kasus : Hotel Santika, Batam)
Authors:   Universitas Internasional Batam, Rizki Fatkur , Pamungkas Pujo ,   Universitas Internasional Batam
Published: May 2023

Di Negara Indonesia, telah banyak terjadi gempa-gempa besar yang tentunya merusak infrastruktur yang ada, terlebih juga untuk bangunan rumah tinggal, hotel ataupun perkantoran. Gempa tersebut tidak mutlak mengakibatkan bangunan-bangunan tersebut sepenuhnya runtuh. Dengan mengetahui level kinerja dari struktur pasca terjadinya gempa, kita dapat mengetahui apakah struktur tersebut masih layak digunakan atau tidak. Untuk mendukung hal tersebut, konsep perencanaan yang digunakan yaitu perencanaan bangunan tahan gempa yang berbasis kinerja (performance based seismic design). Konsep ini dapat digunakan untuk jenis bangunan lama ataupun baru. Salah satu metode yang dapat digunakan untuk mengetahui level kinerja tersebut yaitu analisa pushover (statik non linier) yang berguna untuk meramalkan performa struktur terhadap beban lateral gempa yang diberikan. Beban tersebut akan ditingkatkan dalam satu arah (monotonik) hingga terdapat elemen dari struktur yang mengalami kondisi putus/runtuh. Pada penelitian kali ini, objek yang diteliti adalah sebuah hotel 10 tingkat yang terletak di Wilayah Gempa Zona 1 dengan jenis tanah sedang. Jenis konstruksi yang diteliti adalah baja dan beton bertulang. Hasil dari penelitian ini menunjukkan bahwa untuk jenis konstruksi baja mampu menahan beban gempa sebesar 9847,9285 kN dan perpindahan lantai atap maksimumnya sejauh 617,58 mm, sedangkan untuk konstruksi beton bertulang hanya mampu menahan beban sebesar 4485,89 kN dan untuk perpindahan lantai atapnya yaitu 59,97 mm. Akan tetapi, kedua jenis konstruksi ini masih mampu untuk menahan beban gempa rencana sebesar 466,92 kN untuk konstruksi baja dan 813,51 kN untuk konstruksi beton bertulang. Level kinerja struktur untuk keduanya juga masih masuk kedalam Immediate Occupancy, sehingga kedua struktur masih cukup aman dan mampu menahan beban gempa yang lebih besar.
Metode Pengendalian Jadwal Pembangunan Pelabuhan dengan Kombinasi Barchart dan Network Planning Studi Kasus Proyek PT. DOK Warisan Pertama
Authors:   Universitas Internasional Batam, Umar Usmanul Hayadi , Dzuraida Nur ,   Universitas Internasional Batam
Published: May 2023

A construction company engaged in the construction of ports and docks, namely PT. DOK Warisan Pertama in Batam is running a port project in Batam City. The number of work items carried out in a project requires a good project management to run it. This study aims to review the port project scheduling currently being implemented by PT. DOK Warisan Pertama with the Critical Path Method (CPM) method. The results of the research carried out indicated that the project was completed within 39 weeks. There are several critical paths in the CPM planning for this project. This indicates that the job does not have a free float to complete the job. Making a CPM in this project can be used as a reference and evaluation in carrying out project work.
Analisa Pengaruh Penambahan Zat Karbon dalam Pembuatan Batako Konvensional
Authors:   Universitas Internasional Batam, everest Arifin , Pamadi Mulia ,   Universitas Internasional Batam, Rifa'i Andri Irfan ,   Universitas Internasional Batam
Published: May 2023

Perkembangan pembangunan baik bangunan maupun infrasrtuktur sangat pesat. Ditambah program pembangunan dari pemerintah pada tahun belakangan ini yang meningkat drastis. Pembangunan tersebut membutuhkan batako untuk pemasangan dinding rumah maupun dinding pagar dan seiring dengan permintaan batako yang meningkat, tentu perlu adanya inovasi batako. Penambahan zat karbon pada pembuatan batako sebagai penambah material pasir dijadikan inovasi bahan tambahan. Maka diperlukan penelitian ini dibuat untuk mengetahui pengaruh zat karbon pada kuat tekan pada batako yang sesuai pada SNI 03-0349-1989 tentang bata beton untuk pasangan dinding. Pencampuran zat karbon dalam pembuatan batako adalah 0%, 5%, 10%, dan 15% dari berat pasir yang diperlukan, campuran semen yang digunakan: 25%: 70%:5% yang mengacu pada Pedoman Teknis yang dikeluarkan oleh Departement Pekerjaan Umum tahun 1986. Penelitian ini merupakan penelitian eksperimen dan bentuk cetakan Kubus berukuran 0,15 x 0,15 x 0,15m, sebanyak 12 buah untuk pengujian kuat tekan yang sudah dicampur dengan penambahan zat karbon. Pada umur 7 hari dilakukan pengujian sesuai syarat yang ditentukan dan kuat tekan batako harus memenuhi persyaratan mutu sesuai dengan SNI-03-0349-1989. Hasil uji kuat tekan Batako dilakukan memperoleh hasil kuat tekan batako normal sebesar 259,783 kg/cm2. Batako dengan campuran 5% mendapatkan hasil sebesar 352,893 kg/cm2. Campuran serbuk karbon aktif dengan 10% mendapatkan hasil kuat tekan tertinggi yaitu sebesar 393,293 kg/cm2. Maka dengan penambahan serbuk karbon sebesar 10% sebagai penambah agregat halus (pasir) merupakan pilihan yang tepat. Terjadinya penurunan kuat tekan benda uji 15% yang dikarenakan kurangnya pemadatan yang maksimal pada saat penelitian serta yang masih berusia 7 hari.
Analisa terhadap Penerapan Timeframe pada Perumahan Winner Flower House Punggur
Authors:   Universitas Internasional Batam, Wijaya Edrick Ottoh , Wibowo Petrus Haryanto ,   Universitas Internasional Batam, Umar Usmanul Hayadi ,   Universitas Internasional Batam
Published: May 2023

This research will discuss about Winner Flower housing development The house which will later function as a residence, shop and apartment, and has facilities such as a club house and a swimming pool. This study aims to estimate the time for material procurement based on the time schedule for the construction project of the Punggur Flower House Winner. The method used to determine the estimated time is the conventional method, where the scheduling process is the scheduling process where the measurements are taken, in planning meetings, in measuring, and making scheduling times more regular and systematic. This research will discuss about Winner Flower housing development The house which will later function as a residence, shop and apartment, and has facilities such as a club house and a swimming pool. The estimated work plan for this project is 52 weeks and the realization of this project is 52 weeks. Thus it can be concluded that the processing time until the completion of the work is not delayed.
Evaluasi Tebal Perkerasan Kaku Apron Bandara Mutiara Sis Al-Jufri
Authors:   Universitas Gadjah Mada, Wulandari Aprilia , Tri Utomo Suryo Hapsoro ,   Universitas Gadjah Mada, Siswosukarto Suprapto ,   Universitas Gadjah Mada
Published: May 2023

Bandar Udara Mutiara Sis Al Jufri merupakan salah satu bandara yang mengalami peningkatan permintaan akan lalu lintas udara. Adanya permintaan perjalanan udara yang meningkat setiap tahunnya diharapkan juga selaras dengan kinerja pada fasilitas sisi udara Bandar Udara tersebut sehingga dapat melayani peningkatan permintaan yang terjadi, khususnya pada apron. Penelitian ini dimaksudkan bertujuan untuk mengevaluasi perkerasan kaku apron Bandara Mutiara Sis Al-Jufri Palu serta memperoleh hasil perhitungan konstruksi perkerasan apron yang direncanakan agar mampu melayani lalu lintas pesawat sesuai dengan pertumbuhan lalu lintas pesawat yang direncanakan dengan menggunakan pesawat tipe Boeing 737-900ER sebagai pesawat rencana. Evaluasi perkerasan kaku apron dilakukan dengan menggunakan metode FAA (Federal Aviation Administration) dengan pesawat Boeing 737-900 ER sebagai pesawat rencana. Berdasarkan hasil evaluasi tebal perkerasan kaku untuk kondisi eksisting menggunakan pesawat rencana tipe Boeing 737-900 ER diperoleh tebal slab beton sebesar 36 cm dan subbase sebesar 15 cm, sedangkan tebal perkerasan untuk 20 tahun mendatang diperoleh tebal slab beton sebesar 41 cm dan subbase 15 cm. Sehingga perlu dilakukan penambahan pada tebal slab beton sebesar 5 cm sehingga dapat memikul beban lalu lintas pesawat untuk 20 tahun mendatang. Sedangkan untuk subbase course tidak perlu dilakukan konstruksi kembali sehingga perkerasan tersebut dapat melayani lalu lintas pesawat untuk 20 tahun mendatang.
Persepsi Pengguna Ojek Online di Masa Pandemi Covid-19 dengan Metode Analisis Faktor Eksploratori
Authors:   Universitas Gadjah Mada, Ian Muhammad Rezki , Irawan Muhammad Zudhy ,   Universitas Gadjah Mada, Malkhamah Siti ,   Universitas Gadjah Mada
Published: May 2023

Pandemi COVID-19 memberikan dampak yang besar sehingga memaksa perusahan penyedia jasa ojek online untuk tetap menjaga kualitas pelayanan yang disesuaikan dengan peraturan dan protokol kesehatan agar dapat menekan laju penyebaran virus. Hal tersebut mempengaruhi persepsi dan perilaku masyarakat dalam menggunakan transportasi ojek online. Penelitian ini bertujuan untuk menganalisis persepsi dan perilaku sehingga dapat diketahui faktor yang mempengaruhi penggunaan ojek online di masa pandemi COVID-19. Pengambilan data menggunakan formulir online dengan metode convenience sampling dan metode analisis yang digunakan adalah Exploratory Factor Analysis (EFA). Berdasarkan hasil penelitian ini diperoleh 6 faktor yang mempengaruhi penggunaan ojek online di masa pandemi yaitu faktor protokol kesehatan, keselamatan, kemauan, layanan kesehatan, kinerja ojek online dan kepuasan pengguna angkutan barang.
Delineation and Evaluation of Land Use and Spatial Patterns on the Flood Plains in the City of Sungai Lilin
Authors:   Mahasiswa Magister Teknik Sipil, DTSL, FT, Universitas Gadjah Mada, Putra Ramon , Wignyosukarto Budi Santoso ,   Dosen Magister Teknik Sipil, DTSL, FT, Universitas Gadjah Mada, Legono Djoko ,   Dosen Magister Teknik Sipil, DTSL, FT, Universitas Gadjah Mada
Published: May 2023

Sungai Penuh City is one of the cities in Jambi province that suffers floods every year; floods of 1,651 hectares were recorded in 2017 and 872 hectares were recorded in 2018. The information provided on floodplain maps is one of the measures to reduce flood-related damages. Floodplain maps are also useful for spatial planners to determine suitable spatial patterns in floodplain areas, in addition to flood information. The objective of this study was to map the flood plains in Sungai Penuh City and evaluate the land use and spatial patterns of the flood plains. The delineation of the floodplain area using the HEC-RAS software with a 50-year return period (Q50) flood discharge, land use and spatial patterns using the Detailed Spatial Plan for Sungai Penuh City 2018. The results of the HEC-RAS analysis obtained a floodplain area of 1,869.52 Ha. The use of paddy fields is 1,282.26 hectares or 68.59% of the total floodplain area. 309.42 hectares of bushland. For the spatial pattern, 1,460.96 hectares of the total floodplain or 78.15% is a wetland agricultural zone, while the medium-density and high-density housing zones are 5.54% and 3.58%, respectively.
The Effect of Excavation Work to Soil Slope Stability
Authors:   Program Studi Teknik Sipil, Fakultas Teknik dan Sains, Universitas Muhammadiyah Bangka Belitung, Arif Maulana , Ilpandari Ilpandari ,   Program Studi Teknik Sipil, Fakultas Teknik dan Sains, Universitas Muhammadiyah Bangka Belitung
Published: May 2023

Excavation work is a type of work that is commonly found in many construction projects. In carrying out excavation work, it is necessary to consider stable slope conditions so that landslides do not occur during work. Common ground excavation work found on Bangka Island, especially in the city of Pangkalpinang, is kulong excavation, or sea excavation, as an effort to increase depth elevation. This study aims to determine changes in soil slope stability due to excavation work at a certain depth and slope. The study used field observation data in the form of CPT (Cone Penetration Test), hand drill, and data from laboratory analysis. Data analysis was then carried out using the Slope/W software, which is part of Geostudio 2018, to determine the safety factor for soil slopes using the Bishop and Fellenius method. The value of the safety factor produced by Slope/W determines the level of stability of the soil slope. The slope of the soil varied 15⁰, 30⁰, and 45⁰ and the excavation depth was determined to be 4 m and 8 m. The results showed that the safety factor of the 4 m and 8 m excavation depth in the same slope angle was decreasing about 23.18 % while the safety factor of the 15⁰ and 30⁰ excavation slope in the same depth was decreasing about 31.81%
INTERNALISASI FILSAFAT PANCASILA MELALUI PROFIL PELAJAR PANCASILA PADA KURIKULUM MERDEKA
Authors: Utami Asih , Rukiyati  , Prabowo Mulyo
Published: May 2023

Pancasila sebagai falsafah Indonesia harus terus dijiwai oleh seluruh warga Indonesia. Tindakan yang akan merongrong nilai pancasila harus dicegah. Pelajar Indonesia merupakan sasaran yang utama untuk menumbuhkan dan melestarikan jiwa pancasila. Penelitian ini bertujuan untuk mendeskripsikan internalisasi filsafat pancasila melalui profil pelajar pancasila. Metode penelitian ini menggunakan studi literatur atau studi kepustakaan dengan sumber referensi yang relevan. Hasil penelitian menunjukkan bahwa profil pelajar pancasila fokus pada pengembangan karakter dan kompetensi siswa untuk menghadapi tantangan global agar bisa berdaya saing tinggi. Profil pelajar pancasila terdiri dari enam dimensi yaitu : 1) beriman, bertakwa kepada Tuhan Yang Maha Esa, dan berakhlak mulia, 2) mandiri, 3) bergotong-royong, 4) berkebinekaan global, 5) bernalar kritis, dan 6) kreatif. Keenam dimensi pada profil pelajar pancasila merupakan panjang tangan dari sila-sila pancasila.
Insecticides Efficacy to Control the Neotropical Peanut Burrower Bug Cyrtomenus mirabilis (Perty, 1830) (Hemiptera: Cydnidae) Under Laboratory Conditions
Authors: Michelotto Marcos D. , Reis Aline D. P. , Rodrigues Renato M. , Rincão Rodolfo O. , Andrade Daniel J. , Schwertner Cristiano F. , Godoy Ignácio J.
Published: May 2023

In this study, we evaluated the effectiveness of insecticides sprayed by contact as well as seeds treatment for controlling the burrower bug Cyrtomenus mirabilis (Perti, 1830) (Hemiptera: Cydnidae) under laboratory conditions. In the first experiment, the insecticides were sprayed onto the insects (direct contact). Insect mortality evaluation started 24h after insecticide application and repeated every two days up to 20 days. In the second experiment, peanut seeds were treated with insecticides. The mortality of insects was evaluated at 10, 15, and 20 days after installation. The mixture of fipronil and alpha-cypermethrin in direct contact was the most efficient treatment to control nymphs and adults of C. mirabilis. Regarding the seed treatment, fipronil was the most efficient for controlling adults of C. mirabilis while for nymphs, all insecticides were highly effective.
PELATIHAN PENDIDIKAN PARENTING BAGI ORANG TUA SISWA PADA MASA PANDEMI COVID-19 DI MADRASAH IBTIDAIYAH NEGERI 2 SAMBAS
Authors: Purniadi Putra  , Arnadi  , Hadisa Putri
Published: May 2023

Community service is one of the manifestations of the Tri Dharma Higher Education activities that must be carried out by all lecturers at universities, including in this case the Sultan Muhammad Syafiuddin Sambas Islamic Institute as one of the Islamic Higher Education institutes in the Indonesia-Malaysia border area. Community service and empowerment activities are by providing parenting education training for parents of students during the Covid-19 Pandemic at Madrasah Ibtidaiyah Negeri 2 Sambas. The purpose of this parenting education training is to train parents of students in understanding the importance of parenting and their involvement in the child's learning process comprehensively. The purpose of the research is to provide enlightenment and learning models for Covid-19. To overcome the problems that occur, it is very necessary to hold intensive guidance for family education at home and teachers to provide intensive guidance in parenting education training during the current Covid-19 Pandemic. The implications of family education guidance will provide parents with knowledge at home and at school, especially in Madrasah Ibtidaiyah Negeri 2 Sambas. The result of this research is that the implementation of the training is carried out through direct training and practice. The method used is the lecture method, discussion, and sharing of experiences during the event. The results show the satisfaction of the participants in the training and understand the importance of parenting education assistance during the COVID-19 pandemic in the very good category.
Role of facial familiarity and emotional expression intensity in ensemble emotion perception
Authors: Awad Deema , Emery Nathan J. , Mareschal Isabelle
Published: May 2023

When looking at groups of people, we can extract information from the different faces to derive properties of the group, such as its average facial emotion, although how this average is computed remains a matter of debate. Here, we examined whether our participants’ personal familiarity with the faces in the group, as well as the intensity of the facial expressions, biased ensemble perception. Participants judged the average emotional expression of ensembles of four different identities whose expressions depicted either neutral, angry, or happy emotions. For the angry and happy expressions, the intensity of the emotion could be either low (e.g., slightly happy) or high (very happy). When all the identities in the ensemble were unfamiliar, the presence of any high intensity emotional face biased ensemble perception towards its emotion. However, when a familiar face was present in the ensemble, perception was biased towards the familiar face’s emotion regardless of its intensity. These findings reveal that how we perceive the average emotion of a group is influenced by both the emotional intensity and familiarity of the faces comprising the group, supporting the idea that different faces may be weighted differently in ensemble perception. These findings have important implications for the judgements we make about a group’s overall emotional state may be biased by individuals within the group.
INFLUENCE OF NEODYMIUM COMPOUNDS ENERGY CONTENT ON THE SPECIFIC ELECTRICAL CONDUCTIVITY OF NEODYMIUM COBALTITE
Authors:   MISIS University of Science and Technology, Moscow, Bogatyreva Elena V. , Melnik Filipp ,   MISIS University of Science and Technology, Moscow
Published: May 2023

The influence of the genesis of neodymium cobaltite on its energy content and specific electrical conductivity has been established. The dependences of the specific electrical conductivity of neodymium cobaltite on its energy content, calculated according to X-ray diffraction analysis, and temperature are determined.
THE DEVELOPMENT OF FACILITY AND METHOD FOR AN AUTOMATED DETERMINATION OF METAL POWDERS IGNITION TEMPERATURE
Authors:   FSUE “RFNC –VNIIEF”, Borodovskiy Anton A. , Dudorov Igor V. ,   FSUE “RFNC –VNIIEF”, Korshunov Kirill V. ,   FSUE “RFNC –VNIIEF”, Leshchinskaya Anna G. ,   FSUE “RFNC –VNIIEF”, Stengach Aleksey A. ,   FSUE “RFNC –VNIIEF”, Yaroshenko Vyacheslav V. ,   FSUE “RFNC –VNIIEF”
Published: May 2023

An ignition temperature is one of the important characteristics of metal powders. The determination of ignition temperature is carried out while producing and checking the overall condition of material. The facility and method for automated determination of metal powder ignition temperature have been developed. The method has the advanced precision parameters.
OBTAINING POWDERS OF A SET PHASE AND GRANULOMETRIC COMPOSITION IN THE Li2O-ZnO-TiO2 SYSTEM FOR LTCC-TECHNOLOGY
Authors:   Mendeleev University of Chemical Technology, Vershinin Dmitry I. , Poskotinova Anastasia M. ,   Mendeleev University of Chemical Technology, Shurgaya Nikita S. ,   Mendeleev University of Chemical Technology
Published: May 2023

In this work, the powder of the compound Li2ZnTi3O8 was obtained by sintering technology. It is established that the synthesis at 1200 ºС allows to obtain a monophase thermally stable powder with a perfect microstructure. The granulometric composition of the powder after grinding meets all the requirements for powders used in the technology of low-temperature co-firing ceramics. The resulting powder is promising for creating microelectronic components based on it, such as filters, resonators and monopoles using LTCC technology.
INFLUENCE OF KI ON THE KINETICS OF THE CATHODE PROCESS AND MORPHOLOGY OF ELECTRODEPOSITED SILICON IN THE KF-KCL-K2SIF6 MELT
Authors:   Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Zhuk Sergey I. ,   Ural Federal University, First President of Russia B. N. Yeltsin, Minchenko Lyudmila M. ,   Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Suzdaltsev Andrey V. ,   Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences,   Ural Federal University, First President of Russia B. N. Yeltsin, Isakov Andrey V. ,   Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Zaikov Yury P. ,   Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences
Published: May 2023

The process of electrochemical reduction of silicon on glassy carbon in the melt (mol %) 66.5KF–33.3KCl–0.23K2SiF6 was studied by linear voltammetry. The influence of the addition of 2 mol. % KI on the electroreduction of silicon was studied. The effect of the meniscus on the peak value of the cathode current density of the electrochemical reduction of silicon on glassy carbon is estimated. It has been found that the addition of potassium iodide to the melt under study has no effect on the kinetics and mechanism of the electrochemical reduction of silicon ions.
COMBINATION OF MICROWAVE TECHNOLOGY WITH SOL-GEL METHOD WITH AUTO-COMBUSTION FOR OBTAINING CATALYSTS FOR LOW-TEMPERATURE OXIDATION OF CARBON MONOXIDE
Authors:   Institute of Catalysis and Inorganic Chemistry of the Ministry of Education and Science of Azerbaijan, Zulfugarova Sima M. , Aleskerova Zuleikha F. ,   Institute of Catalysis and Inorganic Chemistry of the Ministry of Education and Science of Azerbaijan, Azimova Gunel R. ,   Institute of Catalysis and Inorganic Chemistry of the Ministry of Education and Science of Azerbaijan, Guliyeva Ulduz R. ,   Institute of Catalysis and Inorganic Chemistry of the Ministry of Education and Science of Azerbaijan
Published: May 2023

The results of a study of the reaction of carbon monoxide oxidation on double and triple cobalt-containing oxide catalysts obtained by the sol-gel method with auto-combustion and the use of microwave technology are presented. The conditions for combining microwave treatment with the sol-gel method with auto-combustion are established. The use of microwave energy to "ignite" the gel without further prolonged irradiation, the catalytic activity of the obtained oxide systems in the oxidative conversion of carbon monoxide is comparable to the activity of similar samples obtained by the sol-gel method with traditional combustion
REDUCING OF COMPOSITE BASED ON GRAPHENE OXIDE WITH METAL SALTS
Authors:   N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Ioni Yulia V. , Rasskazov Ivan E. ,   National University of Science and Technology (MISiS) my of Sciences
Published: May 2023

The results of reduction of a composite based on graphene oxide with metal salts introduced into its structure are described. The composite is an extended dense film. Metal cations are bound to the surface of graphene oxide through oxygen functional groups. The material was further reduced chemically and thermally, and also treated in supercritical isopropanol. Processing under supercritical conditions leads to the reduction of graphene oxide, while metal salts are reduced to metal nanoparticles.
EVALUATION OF THE POSSIBILITY OF USING HYDROLYSIS LIGNIN AS A METAL REDUCER FROM ELECTRIC ARC FURNACE DUST
Authors:   Chelyabinsk State University, Kovalenko Liliya Yu. , Anzulevich Anton P. ,   Chelyabinsk State University, Kalganov Dmitry A. ,   Chelyabinsk State University, Butko Leonid N. ,   Chelyabinsk State University, Zakharyevich Dmitry A. ,   Chelyabinsk State University
Published: May 2023

Experimental results on the reduction of zinc and iron from the dust of electric arc furnaces by hydrolytic lignin in an inert atmosphere are given in the work. The thermogravimetric curve data were processed at temperatures of 700–1000 ºC. It was found that the reduction occurs in two stages: 700–800 ºC and 800–950 ºC. Samples of the original dust and those recovered at different temperatures are not single-phase, which was determined by X-ray phase analysis. In the initial dust, such phases as Fe3O4 and ZnO predominate, at 800 ºC the reflections of the FeO phase have the highest intensity, at 1000 ºC the Fe phase appears in the samples. Based on the data of thermal and X-ray phase analysis, reaction equations are proposed that underlie the process of reduction of dust metals by hydrolytic lignin.
FEATURES OF THE FORMATION OF THE REACTION MASS AND STRUCTURE OF METAL POWDERS DURING THE REDUCTION OF COMPLEX OXIDE COMPOUNDS OF REFRACTORY METALS OF V AND VI GROUPS BY VAPORS OF ALKALINE EARTH METALS
Authors:   I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials  of the Kola Science Centre of the Russian Academy of Sciences, Kolosov Valery N. , Orlov Veniamin M. ,   I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials  of the Kola Science Centre of the Russian Academy of Sciences
Published: May 2023

The features of the formation of the reaction mass and the structure of powders of refractory metals of group V (Ta, Nb) and group VI (Cr, W, Mo, MoCr, MoW) formed during the reduction of complex oxide compounds: Mg4Ta2O9, Mg4Nb2O9, MgCr2O4, MgWO4, CaWO4, MgMoO4, CaMoO4, MgW0.3Mo0.7O4, Cr2(MoO4)3, Cr2WO6 with alkaline earth metal vapors (Mg, Ca) was studied. It was determined that after reduction under certain conditions of compounds containing metals of group VI, a spatial separation of products takes place, which consists in the fact that the bulk of the oxide of the reducing metal is located outside the reaction zone . It was shown that powders of both pure metals and alloys have a mesoporous structure. The specific surface area of metal powders is many times greater than the specific surface area of precursor powders
ADSORPTION OF TUNGSTEN(VI) ON MODIFIED MONTMORILLONITE
Authors:   Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences, Korobitsyna Anna D. , Pechishcheva Nadezhda V. ,   Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences, Krutikova Elizaveta A. ,   Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences, Ordinartsev Denis P. ,   Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences, Shunyaev Konstantin Yu. ,   Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences
Published: May 2023

The aim of the work was to find conditions for the most adsorption of tungsten by a composite sorbent based on montmorillonite. It is shown that montmorillonite modified by magnetite particles adsorbs up to 99 % of tungsten from 10 mg/l W(VI) solution. The maximum difference in adsorption of W(VI) and Mo(VI) on the initial montmorillonite in an acetate buffer medium at pH = 5,4 was bserved. Desorption of tungsten from the surface of montmorillonite was 98 %.
CALCIOTHERMIC NIOBIUM POWDERS
Authors:   I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials  of the Kola Science Centre of the Russian Academy of Sciences, Orlov Veniamin M. , Kryzhanov Mikhail V. ,   I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials  of the Kola Science Centre of the Russian Academy of Sciences
Published: May 2023

The reduction of niobium compounds Nb2O5 and Mg4Nb2O9 by calcium vapor in the temperature range of 750–850 °C has been studied. The features of the porous structure of the obtained niobium powders are established, and the effect of the Mg4Nb2O9 particle size on the completeness of reduction, which increases with a decrease in the average particle size of magnesium niobate, is shown.