bluuebunny/crossref_metadata_2025 huggingface dataset:
Metacognitive Strategies Employed by English Students in Reading Comprehension
Authors: Devina Septiani  , Azhar Aziz Lubis  , Sufiyandi Sufiyandi
Published: December 2023

This research aims to investigate the metacognitive strategies employed by English students at Bengkulu University in reading comprehension. This research was a descriptive quantitative study with the design was survey. The design intends to describe the students’ frequencies in employing metacognitive strategies and also the students’ awareness of metacognitive strategies appropriateness in reading comprehension. The population of this study was English students in KIP Faculty at Bengkulu University. The sample was 92 of English students overall. The sample was taken by using simple random sampling technique. The data were collected by using MARSI questionnaire by Mochtari & Reichard. The data obtained from questionnaire was analyzed by using scoring rubric of MARSI questionnaire and used mean formula to calculate the students’ results. The results have revealed that students highly preferred to employ Problem Solving Strategies (3.00) in reading. Global Reading Strategies was the medium strategy preferred by students (2.88). The least strategy preferred by students was Support Reading Strategies (2.82).The result also indicated that English students are frequently employee metacognitive strategies in reading. As conclusion, this study has revealed that students most frequently employed problem-solving strategies (PROB). The study has also found that students have medium awareness of metacognitive strategies appropriateness in reading.
Code-switching used by English teachers in teaching EFL students
Authors: Andi Rustandi  , Febriani (Scopus ID 57217300982) R Bunga , Sevia Fauziah
Published: December 2023

This study aims to investigate: (1) the types of code-switching used by English teachers in teaching the classroom; and (2) the frequency of code-switching functions used by English teachers in teaching activities. According to Poplack’s theory, there are three types of code-switching: inter-sentential switching, intra-sentential switching, and tag switching. In addition, there are also three functions of code-switching that will be found in classroom activities according to Sert’s theory: topic switch, affective function, and repetitive function. This study was conducted using a qualitative method with a case study approach. The participant in this study was an English teacher at one of the Islamic junior high schools in Ciamis. To determine the participant, the writer used the purposive sampling technique. Data collection in this study was carried out through observation and recording. The writer conducted observation twice, and then recording was used to analyze the data. The results show: (1). The teacher did all the types of code-switching according to Poplack’s theory in her teaching activities, namely, inter-sentential switching, intra-sentential switching, and tag switching. (2). The code-switching function that was dominantly used by English teachers was the topic switch function, with 109 cases, or 82%, while the results of affective and repetitive functions were equal.
Language Learning Strategies: A Case of Indonesian Students Studying in the United Kingdom
Authors: Indah Nopita Nurpa , Yunita Wisma , Maisarah Ira
Published: December 2023

This study aimed to find out the language learning strategies used by Indonesian students during their studies at the University of Leeds in the United Kingdom, the obstacles faced in implementing the learning strategy, and how to overcome the obstacles in implementing the learning strategy. Data obtained by providing a questionnaire and interview. The questionnaire was adopted from the Oxford theory, which consists of 50 statements with five answer choices in the form of Google form to 30 Indonesian students who studied at the University of Leeds. Then, the writer conducted the interview via zoom meeting that focused on the participants’ reasons and experiences with the language learning strategies they used. The result showed that: (1) the Indonesian students studying at the University of Leeds dominantly used cognitive, metacognitive, and social strategies. (2) The Indonesian students faced some obstacles in implementing the learning strategy, and they came from two factors: internal (study habits and study concentration) and external (teacher teaching style and the social environment). (3) The Indonesian students overcome those obstacles by applying different kinds of learning strategies. These findings relate to the importance and the use of language learning strategies for students who want to continue their studies overseas.

Keywords: Language Learning Strategies; Indonesian Student; United Kingdom.
Student Teacher Engagement in Teacher Indirect-Focused Written Corrective Feedback (IFWCF) in a Tertiary EFL Writing Classroom
Authors: Kusrin Kusrin , Supeno
Published: December 2023

Teacher feedback becomes essential things for student-teachers. It assists them in evaluating learning progress. However, student-teachers’ engagement is under-explored. This present study is objective to showcase Indirect-focused written corrective feedback (IFWCF). This case study focused on investigating the combination of indirect-focused written corrective feedback (IFWCF) simultaneously to the higher education students in Indonesia who engaged affectively, behaviorally, and cognitively in narrative writing class. This study uses the narrative inquiry method. The data were collected from students’ reflective journals and their corrected worksheets as teacher’s feedback and interviews. The results indicate that effectively, students engage IFWCF positively although two participants by birth felt confused and frustrated. Cognitively, students think of making plans to follow up on IFWCF, and behaviorally, they materialize the plans to fix the corrected worksheets. In conclusion, the implementation of IFWCF in writing courses has pedagogical implications for EFL students.
Pelatihan Mendesain Media Pembelajaran Animasi pada Masa Pandemi Covid-19 bagi Guru Bahasa Indonesia Tingkat SMP di Kabupaten Bengkulu Tengah
Authors: Wardhana Dian Eka Chandra , Suryadi Suryadi , Noermanzah Noermanzah
Published: December 2023

Media pembelajaran animasi merupakan alat utama guru bahasa Indonesia dalam memberikan pengalaman belajar yang bermakna bagi siswa terutama di masa Pandemi Covid-19. Faktanya, masih banyak guru bahasa Indonesia tingkat SMP, khususnya di Kabupaten Bengkulu Tengah yang belum mampu mendesain media pembelajaran animasi.  Untuk itu, dalam pengabdian kepada masyarakat ini bertujuan menjelaskan hasil pelatihan mendesain media pembelajaran animasi pada masa Pandemi Covid-19 bagi guru bahasa Indonesia Tingkat SMP di Kabupaten Bengkulu Tengah. Metode pelatihan dilaksanakan secara daring melalui Zoom dengan teknik diskusi, ceramah, dan pendampingan. Hasil dari pelatihan ini yaitu pemahaman para kepada guru bahasa Indonesia dalam mendesain media pembelajaran animasi dengan aplikasi Renderforest, Powtoon, dan VideoScribe sebesar 75% dan keterampilan dalam mendesain media pembelajaran animasi baru 53% dari 28 jumlah peserta yang hadir dalam pelatihan.
Demonstrasi, Simulasi dan Video Robot Untuk Meningkatkan Motivasi Siswa Bidang IPA
Authors: Mayub Afrizal , Henny Johan  , Aceng Ruyani
Published: December 2023

Salah satu tridharma perguranan tinggi adalah pengabdian kepada masyarakat, kegiatan pengabdian itu merupakan kegiatan yang wajib dilaksanakan oleh setiap Dosen, oleh karena itu Dosen program S2 IPA Universitas Bengkulu bekerjasama dengan guru MAN 1 Rejang Lebong, Kabupaten Rejang Lebong Bengkulu tanggal 28 September 2022 melakukan kegiatan Pengabdian di MAN 1 Rejang Lebong Bengkulu. Kolaborasi ini berbentuk kegiatan pengabdian kepada masyarakat di MAN 1  Rejang Lebong Bengkulu dengan judul  “Demonstrasi dan Simulasi Robot Line Follower Untuk Memotivasi  Siswa Belaja  IPA Pada MAN 1, Kabupaten Rejang Lebong. Dari kegiatan tersebut dapat disimpulkan bahwa; Materi ajar yang disampaikan dengan menggunakan multimedia interaktif yang meliputi, ceramah, demo secara virtual, animasi, visualisasi, simulasi dan video terbukti berhasil memotivasi siswa untuk lebih peduli pada sains pada kategori termotivasi/peduli dengan score 3,82 pada skala 1 -5.
Pelatihan English Conversation Bagi Guru dan Siswa
Authors: Siti Maria Ulfa  , Moh. Arief Wahyudi
Published: December 2023

This activity is carried out with the aim of conveying information about how English conversation must be carried out by both teachers and students in order to achieve the desired goals, namely being able to communicate well and effectively. The participants in this activity were three English teachers and twelfth grade students totaling thirty seven students and took place in the school’s classroom. The method used starts from introduction, delivery of theory, discussion, implementation of trials, reflection and evaluation. Each stage was well executed  and as a result, this activity had a tremendous effect on teachers and students. Teachers can find strategies that they had not previously thought of in teaching speaking skills to students and they feel comfortable when they are taught by adjusting the topics of discussion that are appropriate to their domain. Therefore, it is necessary to carry out activities that are continuous and sustainable so that what is the main goal of students to be able to master English conversation for the world career and a better opportunity to study can be achieved.
Membangun Jiwa Enterpreneur Bidang Elektronika Dengan Memanfaatkan LED Strip
Authors: Kurniawan Chandra , Rida Samdara  , Riska Ekawita
Published: December 2023

Madrasah Aliyah Mambaul Ulum merupakan salah satu madrasah swasta di bawah kementerian agama yang berlokasi di Jl. Masjid Al-Muttaqin No.92 Desa Harapan Makmur, Kecamatan Pondok Kubang, Kabupaten Bengkulu Tengah, Provinsi Bengkulu. Sekolah yang sudah berdiri sejak 2016 ini memiliki unit usaha mandiri yang keuntungannya  digunakan untuk mendukung operasional sekolah seperti biaya listrik, keberlangsungan kegiatan belajar mengajar, dan pembayaran gaji guru serta tenaga kependidikan. Namun usaha yang sudah berjalan selama ini belum optimal memenuhi operasional sekolah. Berdasarkan kondisi tersebut, tim pengabdian  berasumsi bahwa perlu adanya unit usaha tambahan yang dapat dijalankan oleh sekolah. Salah satu unit usaha yang belum pernah dijalankan oleh MA Mambaul Ulum adalah unit usaha berbasis elektronika berupa pemanfaatan LED (Light Emitting Diode) Strip. Pemilihan unit usaha ini berdasarkan bidang keahlian tim pengabdian yaitu bidang fisika instrumentasi (elektronika). LED Strip dijadikan sebagai bahan utama dalam pembuatan souvenir berupa lampu hias dan lampu akrilik yang bernilai jual. Souvenir berbasis LED Strip tersebut diharapkan mampu menarik minat pasar dan menjadikannya sebagai sarana promosi unit usaha sekolah. Metode yang dilaksanakan dalam mencapai tujuan adalah pelatihan dan pendampingan pembuatan souvenir. Kegiatan ini diikuti oleh 12 orang peserta siswa/i MA Mambaul Ulum yang tergabung dalam 4 kelompok kecil. Di akhir pelatihan, peserta mampu membuat souvenir berbasis LED yang telah dikustomisasi sesuai dengan kreativitas masing-masing siswa.
Pelatihan PKBI bidang Kalimat Bahasa Indonesia Tenaga Administrasi Lembaga Pemerintah Kota Bengkulu
Authors: Yulistio Didi
Published: December 2023

Pelatihan PkM ini bertujuan untuk PKBI bidang Kalimat Bahasa Indonesia bagi Tenaga Administrasi Lembaga Pemerintah di Kota Bengkulu. Tempat pelaksanaan kegiatan di Aula Hotel Splash Kota Bengkulu, Rabu, 12 April 2023, Pukul 08.00 sampai dengan Pukul 12.00 WIB. Sasaran kegiatan untuk peningkatan pola pikir (mindset) atau sikap, pengetahuan, dan keterampilan menulis kalimat bahasa Indonesia Tenaga Administrasi Lembaga Pemerintah di Kota Bengkulu. Peserta kegiatan ini berjumlah 50 orang dari 34 lembaga pemerintah yang diikutsertakan. Kegiatan melalui metode ceramah dan diskusi aktif peserta. Narasumber mempresentasikan materi kalimat bahasa. Target Capaian kegiatan yakni perubahan pola pikir (mindset), pengetahuan, dan keterampilan menggunakan kalimat bahasa Indonesia tenaga administrasi lembaga pemerintah di kota Bengkulu. Hasil kegiatan PkM bahwa telah terjadi PKBI bidang kalimat khususnya peningkatan sikap, pengetahuan, dan keterampilan tenaga administrasi lembaga pemerintah di kota Bengkulu berkategori baik. Hal tersebut dibarengi dengan aktivitas peserta yang juga meningkat dengan lebih bersemangat dan antusiasme yang tinggi. Hasil ini sebagaimana rincian keberhasilan kegiatan yang meliputi (1) peningkatan pola berpikir (mindset) atau sikap peserta dalam beraktivitas mengikuti pelatihan dengan motivasi, semangat, dan antusiasme dalam mewujudkan penulisan kalimat bahasa Indonesia yang baik dan benar, (2) peningkatan pengetahuan dan keterampilan KBI tenaga administrasi lembaga pemerintah di kota Bengkulu dengan kategori baik, khususnya bidang kalimat bahasa Indonesia. Saran hasil kegiatan dapat ditindaklanjuti melalui pelatihan penulisan laporan dan surat-menyurat resmi bagi lembaga pemerintah di kota Bengkulu.
Edukasi Peran Perempuan Melalui Art Therapy Sebagai Strategi Ketahanan Keluarga Pasca Masa Pandemi Covid-19
Authors: Rendy Wikrama Wardana  , Herawati Anna Ayu , Bayu Pradikto
Published: December 2023

Tujuan pengabdian pada masyarakat ini untuk menyajikan edukasi melalui materi art Therapy bagi ketahanan keluarga pasca pandemi covid-19. Kegiatan dilakukan dalam tiga tahap, yaitu: meliputi tiga tahapan yakni tahap pertama (Layanan informasi dan Art Theraphy), kedua (Alternatif Solusi Pengembangan Diri) dan Tahap tiga (Evaluasi). Materi disampaikan dengan ceramah, diskusi. Peserta kegiatan berjjumlah lebih dari 40 Ibu-Ibu dari berbagai Profesi di desa Magelang Kecamatan Kerkap Kabupaten Bengkulu Utara. Pelaksanaan art theraphy dilakukan melalui teknik painting yakni memberikan warna pada gambar anggota tubuh serta menggambarkan bagaimana keluarga ideal yang diharapkan dalam berumah tangga. Hasil yang didapatkan melalui art therapy mewarnai anggota tubuh diketahui bahwa pada ibu-ibu di Desa Magelang terbagi menjadi tiga kategori, yaitu: (1) Baik-baik saja, (2) Sakit fisik, dan (3) Gejala sakit psikis. Adapun ibu-ibu yang terdapat pada kategori baik-baik saja berjumlah 8 orang (20 %), kategori sakit fisik berjumlah 20 orang (50%), dan kategori sakit psikis berjumlah 12 orang (30 %). Kesimpulan yang diperoleh dari kegiatan ini adalah ibu-ibu mendapatkan pengetahuan dan solusi dalam mengelola dan memenejemen ketahanan pangan keluarga.
Pengembangan Kompetensi Tenaga Administrasi Sekolah Melalui Self-Directed Learning
Authors: Sururi  , Hafidh Zaini , Suryana Asep , Rahyasih Yayah , Kadarsah Deni , Suharto Nugraha
Published: December 2023

Tenaga administrasi sekolah/Madrasah (TAS/M) memerankan peran penting dalam sistem sekolah, peran penting ini sama hal nya dengan peran guru dalam proses mendidik. Selain betugas dalam pengelolaan yang berkenaan dengan hal administratif di sekolah, tenaga administrasi sekolah juga berperan aktif dalam memberikan pelayanan administrasi kepada seluruh pihak yang berkepentingan. Peran vital tenaga administrasi yang begitu penting dalam pengelolaan suatu sekolah sehingga pemerintah melalui Permendiknas Nomor 24 Tahun 2008 menetapkan standar tenaga administrasi sekolah. Standar ini mengatur tentang kualifikasi dan kompetensi minimal yang harus dipenuhi oleh seorang tenaga administrasi sekolah. Kompetensi yang dimaksud adalah kompetensi kepribadian, sosial, teknis dan manajerial. TAS/M harus terus mengembangkan kompetensi dan profesionalisme nya sebagai bagian tanggung jawab dalam menjalankan tugasnya. Proses pengembangan dan penguatan kompetensi ini harus terus dilakukan seperti halnya pengembangan kompetensi untuk guru yang dilakukan secara terus menerus. Self-Directed Learning (SDL) adalah satu pembelajaran yang mana pembelajar dapat terlibat dalam menentukan apa yang mereka pelajari. Hal tersebut jelas berbeda dengan konteks belajar sendiri dan mereka dapat lebih aktif dan leluasa dalam menentukan apa yang mau mereka capai. Melalui metode diharapkan berdampak positif pada proses pengembangan dan penguatan kompetensi tenaga admistrasi sekolah
Geokids Class: Pemberdayaan untuk Pariwisata Berkelanjutan melalui Pengenalan Geopark pada Anak-Anak di Desa Olele
Authors: Yayu Indriati Arifin  , Ninasafitri Ninasafitri , Djamal Adi Nugroho  , Fadhil Abdillah Ahmad  , Alit Anastasya Hemu
Published: December 2023

Geopark merupakan topik penting pembangunan daerah khususnya pariwisata di era globalisasi saat ini. Desa Olele yang merupakan daerah tujuan wisata potensial, terdapat potensi alam yang besar, termasuk kekayaan geologis yang belum dimanfaatkan secara maksimal. Untuk mendapatkan manfaat yang berkelanjutan dari industri pariwisata ini, masyarakat lokal harus diberdayakan melalui pendekatan yang juga mencakup pengenalan profesi ahli geologi kepada generasi muda. Tujuan dari penulisan artikel ini adalah untuk menggambarkan implementasi program "Geokids Class" yang dirancang untuk memberikan pengetahuan dasar tentang geologi dan geopark kepada anak-anak di Desa Olele. Metode pendekatan partisipatif dan pendidikan berbasis komunitas digunakan dalam implementasi program ini. Hasil dari program "Geokids Class" menunjukkan peningkatan pemahaman anak-anak tentang geopark di sekitar mereka serta pemahaman tentang dampak positif yang dapat dihasilkan dari pengenalan profesi geologi.
Cold thermal energy storage study in a hospital building
Authors: Alhikami Akhmad Faruq , Gusuma Egi Dwi , Firmansah Moh. Fiqi , Nugroho Rusdan Aditya Aji , Sepriyatno Riswan
Published: December 2023

This paper studies cold thermal energy storage in a hospital building. There are six CTES strategies to implement in the building includes full storage, levelling storage, partial storage 30%, partial storage 50%, partial storage 70%, and partial storage 90%. The energy consumption, electricity cost and chiller performances are evaluated to find the optimum mode.The results showed that levelling storage found the best mode for new cooling system investment with annual savings up to 10.5%. In addition the energy consumption is considered lower than normal cooling system. The chiller capacity of partial storage 30% is closed to normal cooling, thus this strategy is the best for replacement system with the annual savings up to 13%.
Rancang Bangun Mesin Penggilingan Padi Rumahan dengan Penggerak Dinamo Pompa Air
Authors: Siregar Muhammad Iqbal Harapan Muslim , Bukhari  , Abdilah Tomi , Irawan Tomi , Pane Ali Hasimi , Saktisahdan Tengku Jukdin
Published: December 2023

Saat ini proses penggilingan padi di Kecamatan Rawang Panca Arga masih menggunakan mesin mobil diesel sebagai motor penggeraknya. Mesin ini memiliki beberapa kekurangan serta mengeluarkan polutan berbahaya yang merugikan kesehatan pernafasan. Oleh karena itu, peralatan yang ringkas dan sangat portabel dikembangkan untuk memenuhi kebutuhan beras para petani dengan mudah, tanpa menimbulkan polusi. Mesin Penggiling padi ini menggunakan dinamo pompa air yang menggunakan daya listrik rumahan sebesar 125 Watt dengan putaran sebesar 2800 rpm dan tenaga yang dihasilkan dari motor pompa tersebut adalah 3,28154 KW. Motor tersebut mentransmisikan putarannya dengan menggunakan dua buah kopling yang dapat memutarkan poros as penyosoh yang ditumpu oleh dua buah bantalan pillow block .Mesin ini memiliki ruang penggiling dengan kapasitas maksimal sebesar 72 kg/jam yang cocok untuk pemakaian skala rumahan.
Application of X-ray Fluorescence and Radiation Methods for the Analysis of Medicinal Plant Raw Materials on the Example of Achilleae millefolii herba
Authors: Kalikina I. Yu. , Turyshev A. Yu. , Belonogova V. D. , Kuritsyn A. V. , Puchnina S. V. , Buzmakova N. A.
Published: December 2023

Introduction. Environmental monitoring is an important area of modern scientific research. This is due to the anthropogenic impact on the environment, which often negatively affects the diversity of the Russian medicinal flora. The use of modern instrumental analytical methods of medicinal plant raw materials is relevant due to the intensive development of science. The content of heavy metals, the elemental composition and the level of background radiation are important characteristics of ecological purity and safety of medicinal plant raw materials. These characteristics are of interest for assessing the possibility of harvesting and using medicinal plants at localization. The generally accepted instructions for harvesting were used.

Aim. Investigation of the possibilities of using X-ray fluorescence and radiation methods for environmental monitoring of medicinal plant raw materials.

Materials and methods. The research object was Achilleae millefolii herba. The harvestment of plant raw materials was carried out in the Bardymsky, Chernushinsky, Uinsky, Kishertsky, Oktyabrsky, Suksunsky, Ordinsky, Sivinsky districts of the Perm Region in the summer in 2022–2023. The X-ray fluorescence analyzer (XFA) ARL QUANT'X EDXRF was used to determine heavy metals and assess the elemental composition of plants. The analysis was carried out according to the methodology that was developed by scientists of the Pharmacognosy Department at the Perm State Pharmaceutical Academy. The radiation background in raw materials was assessed by using a special dosimeter RADEX RD1503.

Results and discussion. As a result, it was found that harvesting of Achilleae millefolii herba is possible in the Perm Region studied areas. Bardymsky, Uinsky, Kishertsky, Ordinsky, Chernushinsky districts are the most recommended for harvesting plant raw materials. Samples from these areas are ecological purity and safe for use as medicinal raw materials and have a diverse elemental composition. The content of heavy metals does not exceed the maximum permissible concentrations according to the regulatory documentation requirements. The background radiation level does not exceed the threshold value compared to other areas in the Russian Federation.

Conclusion. X-ray fluorescence analysis is a suitable and reliable analytical method for determining elements in plant raw materials. XFA is a multi-element express method that allows analyzing a sample with minimal sample preparation. The advantages of the method are good reproducibility, high sensitivity, and efficiency. Research continues.
Development of Methods for Identifying BAS Exhibiting Anticoagulant Activity
Authors: Berezina E. S. , Nepogodina E. A. , Sobin F. V. , Pulina N. A. , Dozmorova N. V.
Published: December 2023

Introduction. Vascular pathologies associated with thromboembolism are common complications and the leading cause of morbidity and mortality among patients of various nosological groups. Previously, we obtained water-soluble 2-hydroxy-4-oxo-4-R-2-butenoates of hetarylammonium, which exhibit a significant pharmacological effect on the blood coagulation system». A compound with a pronounced anticoagulant effect was found in various routes of administration. It was of interest to study various methods of confirming the authenticity of a potential anticoagulant.

Aim. Development of methods for identification of a potential anticoagulant 2-hydroxy-4-oxo-(4-chlorophenyl)-2-butenoate of thiazolinammonium.

Materials and methods. The studies were carried out on three series of the substance 2-hydroxy-4-oxo-(4-chlorophenyl)-2-butenoate of thiazolinammonium obtained in laboratory conditions. The melting point of BAS was measured by the capillary method according to GF XV OFS.1.2.1.0011 "Melting point". The solubility of the substance was determined in accordance with GF XV of the OFS.1.2.1.0005 "Solubility". The absorption spectra in the IR region were taken in accordance with GF XV of the OFS.1.2.1.1.0002 "Spectrophotometry in the middle infrared region". Absorption spectra in the UV region were taken in accordance with GF XV of the OFS.1.2.1.1.0003 "Spectrophotometry in the ultraviolet and visible regions". In carrying out qualitative reactions, reagents prepared in accordance with GF XV of the OFS were used.1.3.0001 "Reagents. Indicators".

Results and discussion. A description of the substance has been carried out. The melting point and solubility of the compound were determined. Spectra in the IR and UV regions of the spectrum were taken. Methods were selected, and qualitative reactions of authenticity of a potential anticoagulant were carried out.

Conclusion. The studied characteristics of the new BAS can be used in the standardization of the substance according to the indicators "Description", "Solubility", "Identification", "Melting point". These indicators characterize the physico-chemical properties of 2-hydroxy-4-oxo-(4-chlorophenyl)-2-butenoate of thiazolinammonium, and will be included in the draft regulatory documentation for the substance in the future.
Study of the Anti-inflammatory Activity of 2-hydroxy-4-oxo-4-R-2-butenoates of Heterylammonium, which Have an Effect on the Blood Clotting System
Authors: Sobin F. V. , Pulina N. A. , Chashchina S. V. , Starkova A. V. , Rudakova I. P. , Buzmakova N. A.
Published: December 2023

Introduction. The use of anticoagulants is relevant in therapeutic, cardiological, neurological practice, geriatrics, obstetrics and gynecology, as well as in complications associated with COVID-19 infection and vaccination. In-depth studies of additional pleiotropic effects of existing anticoagulants are being conducted. The anti-inflammatory effect of heparins and direct oral anticoagulants was found. Special emphasis is placed on the existing close relationship between coagulation and inflammatory processes. The interaction of anticoagulants with nonsteroidal anti-inflammatory drugs when taken together is actively discussed. The combination of anticoagulant and anti-inflammatory action in one chemical molecule can solve the problem of polypragmasia.

Aim. To study the anti-inflammatory activity of promising 2-hydroxy-4-oxo-4-R-2-butenoates of heterylammonium, which have an effect on the blood clotting system.

Materials and methods. For further study of anti-inflammatory activity, 2-hydroxy-4-oxo-4-R-2-butenoates of heterylammonium, which have an effect on the blood clotting system, were selected. The anti-inflammatory effect was studied on a model of acute inflammatory edema in mongrel rats of both sexes weighing 180–250 g. The studied compounds were administered intragastrically. Diclofenac sodium and nimesulide substances administered similarly were used as comparison drugs. Acute toxicity of substances that showed activity was studied on white nonlinear mice of both sexes weighing 18–22 g with the definition of LD50.

Results and discussion. All the studied 2-hydroxy-4-oxo-4-R-2-butenoates of heterylammonium have anti-inflammatory effects of varying severity. Data on the study of acute toxicity during intragastric administration, allow us to attribute the studied compounds to the 4.5 class of the hazard classification of chemical products.

Conclusion. The anti-inflammatory activity of 14 2-hydroxy-4-oxo-4-R2-butenoates of heterylammonium has been studied. Five butanoate have an effect lower than comparison drugs, eight compounds are comparable to the effect of reference drugs, one compound is superior to nimesulide. The studied compounds can be assigned to class 4,5 of the hazard classification of chemical products. Medicinal candidates have been selected for further pharmacological, toxicological and technological study.
Synthesis and Antihypoxic Activity of 2-aryl-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-4-carboxylic Acids and Their Reaction Products with Substituted Hydrazines
Authors: Namyatova K. V. , Zykova S. S. , Ovchinnikov D. S. , Shurov S. N.
Published: December 2023

Introduction. Hypoxia is a violation of oxidative processes in tissues that occur when oxygen is insufficiently supplied to them or when its utilization is disrupted during biological oxidation. Chronic hypoxic damage plays an important role in the occurrence and development of various diseases, which necessitates the synthesis of new compounds with antihypoxic activity.

Aim. The purpose of this study is to synthesize and investigate the antihypoxic activity of 2-aryl-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-4-carboxylic acids and their reaction products with substituted hydrazines.

Materials and methods. 2-Aryl-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-4-carboxylic acids (I–VI) were obtained with high yields as a result of the interaction of 4-aroyl-2,4-dioxobutane acids with 3-amino-5,5-dimethylcyclohex-2-enone. Interaction of 2-aryl-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-4-carboxylic acids with benzyl- and (2-phenylethyl)hydrazines 5-aryl-2-benzyl- and 2-(2-phenylethyl)-8,8-dimethyl-3,7,8,9-tetrahydro-2H-pyrido[4,3,2-de]cinnoline-3-ones (VII–XII) were obtained. As a result, 12 compounds were synthesized. The study of the antihypoxic activity of the obtained compounds was carried out in vivo on a model of normobaric hypoxia with hypercapnia.

Results and discussion. The synthesized compounds were tested for the presence of antihypoxic action. The most pronounced antihypoxic activity is characteristic of compounds VI and VIII, which have a methoxy group and a methyl radical in the para-position of the phenyl substituent at C5, respectively. The presence of chlorine in the structure of compound III, fluorine in compound X and the absence of substituents (compounds I and VII) contribute to the prohypoxic effect. According to the results of the study, both quinolincarboxylic acids and pyridocinnolines are potential antihypoxants.

Conclusion. A comparative analysis of the antihypoxic activity of the synthesized compounds was carried out, the relationship between their structure and severity of action was established, the most active substances were identified.
The Effect of New Water-soluble 2-aminoheteryl-3-ium 4-(het)aryl-2-hydroxy-4-oxobut-2-enoates on the Hemostasis System In vitro
Authors: Starkova A. V. , Sobin F. V. , Rudakova I. P. , Pulina N. A. , Dozmorova N. V. , Luzhanin V. G.
Published: December 2023

Introduction. The hemostasis system is a set of functional, morphological and biochemical mechanisms of a living organism that ensure the preservation of the liquid state of the blood, the prevention and stopping of bleeding, as well as the integrity of blood vessels. Anticoagulants and hemostatic agents can significantly change the mechanism of hemostasis. Interest in the synthesis and search for compounds that affect the blood coagulation system remains high. Substances exhibiting anticoagulant and hemostatic effects have been found. The search for compounds among the products of organic synthesis that affect the hemostasis system seems relevant.

Aim. To study the effect of new water-soluble 2-amino heteryl-3-ium 4-(get)aryl-2-hydroxy-4-oxobut-2-enoates on the hemostasis system using an in vitro model.

Materials and methods. Direct interaction 4-(het)aryl-2-hydroxy-4-oxobut-2-enoic acids with heterocyclic amines have been obtained new water soluble 2-aminoheteryl-3-ium 4-(het)aryl-2-hydroxy-4-oxobut-2-enoates. The study of the effect of substances on the hemostasis system was carried out using the coagulometer "APK 4-02-P". Ethamsylate and sodium heparin were used as comparison drugs for hemostatic and anticoagulant activity, respectively. Acute toxicity of the compounds was determined by intravenous administration of aqueous solutions of the compounds to non-linear white mice of both sexes with the definition of LD50.

Results and discussion. 10 New 2-aminoheteryl-3-ium 4-(het)aryl-2-hydroxy-4-oxobut-2-enoates have been synthesized. In vitro screening of the effect of compounds on the hemostasis system found that 3 substances have a pronounced anticoagulant effect, and 4 compounds showed hemostatic activity. Some patterns of the "structure-pharmacological action" relationship have been found. The studied butenoates can be classified as moderately toxic compounds according to the classification of chemical toxicity.

Conclusion. Pharmacological screening in vitro of the effect of compounds on the hemostasis system was carried out. It was found that all the studied compounds have an effect on the blood coagulation system of varying degrees of severity. The combination of a pronounced pharmacological effect, low acute toxicity and water solubility of butenoates may become a prerequisite for further search and possible development of new domestic medicines that have an effect on the hemostasis system.
Research into LED RGB Light Fixture with Adjustable Radiation Spectrum for Aquarium Lighting
Authors: Gorbunov Alexey A. , Ivanushkin Anton M. , Mikaeva Svetlana A. , Zhuravlyova Julia A.
Published: December 2023

The article presents the results of a study of an aquarium lighting device prototype developed based on a RGB LED strip using computer technologies for measurement of its spectral characteristics on the basis of practical studies of the effect of chromaticity on flora and fauna of water bodies. The studies were carried out at Light and Engineering Metrology resource sharing centre of the Electronics and Light Engineering Institute of N.P. Ogarev Mordovia State University. For development of the prototype of an aquarium lighting device based on RGB LED strip, the results of colorimetric measurements of special fluorescent aquarium lamps made by Hagen and Havells Sylvania Europe LTD (Germany) were used. The laboratory set based on a Raspberry Pi single-board computer and software for colorimetric calculations and set control was developed for connection and adjustment of spectral characteristics of the RGB LED strip. The colorimetric characteristics of the prototype were compared to those of special fluorescent lamps for aquarium lighting. Satisfactory repeatability of spectra and CCT was demonstrated for the developed LED-based prototype aquarium lighting device. These studies will allow us to identify further areas for updating of functional and software solutions to make it possible to adjust spectral characteristics and to make them close to optimal levels for specific species.
Constructive and Software of a Gonio-Radiometer for UV Radiation Sources
Authors: Pankratov Alexey A. , Bobylev Maxim D. , Palagushkin Andrey S. , Vishnevsky Sergey A.
Published: December 2023

The Keitz method is well-proved itself. And factually it became the basis for the accepted practice in measuring of radiant flux of the germicidal low-pressure lamps. But it was developed for linear lamps exclusively. The measuring of radiant flux of the compact and U-shaped germicidal lamps was not considered neither in the IUVA methodology and nor in the international standard ISO 15727. The results accuracy of the simplified methods depends on the type of approximation of the spatial distribution of the radiant intensity that should be based on the goniometric data. They are accumulated for the linear lamps and they are absent for the compact and U-shaped germicidal lamps.
There are device and functions of the automated goniometer-radiometer complex, developed by specialists of the Scientific Research Institute of Light Sources named after A.N. Lodygin, described in the article. This complex is intended for research of the light power angle (space) distribution of the germicidal lamps having various shapes. The research aim is to clarify the existing simplified methods or to develop new ones.
The complex operation is controlled by GNU/Linux system. The developed software program has the command-line interface that allows us to get the remote access (via SSH-server) and to make the personnel work safe by absence of the direct UV-radiation exposing.
The article also provides examples of goniometer-radiometer measurement sessions and the obtained results for germicidal lamps DB15 (linear) and DKB11 (compact), which were used as test samples.
Selection and Justification of Optimal Spectral Wavelengths for Control of Methane Emission from an Advanced Nanosatellite
Authors: Karasik Valery E. , Belov Mikhail L. , Zhivotovsky Ilya V. , Sakharov Alexei A.
Published: December 2023

The choice and justification of optimal wavelengths of spectral radiance density registration for the task of monitoring methane emissions in the atmosphere from the orbit of an artificial satellite by a passive optical sensor in the spectral region near 1.65 μm have been performed. Mathematical modelling of the spectra recorded by the optical sensor for tropical and subarctic atmospheric models of the Earth’s atmosphere, different widths of the spectral function of the acousto-optic spectrometer, and different solar zenith angle were performed. It is assumed that methane emissions in the Earth’s atmosphere will be monitored from a promising nanosatellite (weighing less than 6 kg) using an acousto-optic spectrometer, which uses two narrow (0.1 nm and 0.5 nm) wavelengths of radiation registration to implement a differential method of absorption spectroscopy based on acousto-optic filtering. A criterion for selecting optimal wavelengths for monitoring the integral methane content in the atmosphere from the orbit of the artificial satellite is proposed. The values of the central wavelengths of optimal wavelengths for recording the energy brightness of scattered radiation for the width of the spectral function of the acousto-optic spectrometer in range (0.0, 0.1, 0.2 and 0.5) nm have been obtained. It is shown that the choice of the optimal pair of wavelengths is determined by the width of the spectral function of the sensor, depends insignificantly on the model of the Earth’s atmosphere (tropical or subarctic model) and does not depend on the solar zenith angle in range (0–80) angular degree.
Methodology for Creating Personalized Adaptive Lighting Systems for Round-the-Clock Shift Workers
Authors: Klimova Daria A. , Roslyakova Svetlana V. , Filippov Ilya M. , Goffman Olga O. , Bragina Tatyana V. , Zemlyanova Ekaterina I. , Bystryantseva Natalia V.
Published: December 2023

Light has a dominant non–visual effect on numerous physiological processes. Workers with non-standard schedules often suffer from the disturbance of circadian rhythms that depend on light. In this study, we have developed a methodology for creating an adaptive lighting system that helps maintain the psychophysiological state of employees in norm. The existing methods for adapting lighting were considered. It was concluded that the psychophysiological factor of adaptation is relevant for both employers and employees. Various methods of data collection for the functioning and development of the system were reviewed, including psychological techniques and biomonitoring devices. Based on the analysis, a methodology was developed for creating an adaptive lighting system for doctors with round-the-clock and night work schedules with the prospect of future scalability. This will improve the health of employees, which often deteriorates due to unsatisfactory working conditions. Based on the developed methodology, it is possible to create adaptive lighting systems in different areas that require non-standard schedules and increased accuracy to perform work tasks.
Innovation Efficiency of Chinese Light and Engineering Industry Based on DEA-Malmquist Index Model
Authors: Du Yunchao
Published: December 2023

Scientific and technical innovation is essential for the continuous growth and advancement of the lighting industry. In this study, we utilized the DEA-Malmquist index method to evaluate the innovation input-output efficiency of listed companies in China’s lighting industry from 2015 to 2022. The findings reveal a positive trend in technological innovation within the industry, characterized by increased technological progress and the scale effect. This trend demonstrates the industry’s ability to adapt to market demands and leverage new technologies, contributing to its overall growth and competitiveness. The industry’s emphasis on research and development investment and the introduction of innovative products and processes play significant roles in fostering this positive trajectory. Furthermore, the scale effect observed highlights the benefits of scaling up operations to achieve efficiency and productivity gains. However, to fully capitalize on technological advancements and scale benefits, companies need to strengthen their management practices. Ultimately, the success of the Chinese lighting industry serves as a source of inspiration for other countries and industries, emphasizing the importance of prioritizing research and development, embracing new technologies, scaling up operations, and improving management practices to drive innovation and enhance competitiveness.
Anemia in children with chronic kidney disease
Authors: Park Min Ji , Cho Min Hyun
Published: December 2023

Chronic kidney disease (CKD) causes numerous changes that destabilize homeostasis, of which anemia is one of its important complications. Anemia significantly reduces the quality of life in children with CKD and plays a crucial role in the progression of cardiovascular disease such as left ventricular hypertrophy, a major cause of mortality in those with advanced CKD. The treatment of anemia is a pivotal factor in reducing morbidity and mortality rates in children with CKD, representing one of the methods for enhancing patients’ quality of life.
A Study on the Possibility of Endoscopic Modified Lothrop Procedure Using Imaging Measurements
Authors: Koo Hyung-Bon , Kwak Jae-Hwan , Lee Jae-Hoon
Published: December 2023

Background and Objectives Endoscopic modified Lothrop procedure (EMLP) is indicated after the failure of standard endoscopic sinus surgery techniques to alleviate frontal sinus disease. Three parameters, such as nasal beak thickness (NBT), accessible dimension of frontal recess (AD), and distance of frontal sinus (DFS), are important in the preoperative evaluation and selection of patients for EMLP. The purpose of this study is to apply the parameters to determine the feasibility of EMLP for the Korean population.Subjects and Method Sinus CT was performed on a total of 233 people, and a study was conducted using 466 bilateral sides with the following parameters: 1) NBT 2) the distance from the posterior margin of nasal beak to the anterior margin of skull base (DNBSB) 3) the right and left AD and 4) the right and left DFS. If the values of NBT, AD, and DFS of the study group were less than 10 mm, greater than 5 mm and 7 mm, respectively, they were considered candidates for the EMLP.Results DNBSB, NBT, AD, and DFS were 6.97±1.96 mm, 7.01±1.58 mm, 7.16±2.40 mm, and 9.47±2.91 mm, respectively. Parameters except DNBSB showed significant differences in male and female. The feasibility of EMLP was 75.36% for male and 57.89% for female, with 68.24% overall.Conclusion The overall feasibility of EMLP was 68.24% for the study group, where feasibility was lower for female than for male.
Investigation of Visual and Auditory Reaction Times of Elite and Non-Elite Field Hockey Athletes
Authors: Avcı Nahsen , Özdal Mustafa , Yılmaz Ömer Faruk , Koyunlu Ahmet , Cağdanlıoğlu Mustafa Burak
Published: December 2023

The aim of this study is to examine the visual and auditory reaction times of elite and non-elite hockey players. Between the ages of 19-29 33 elite male hockey players who selected to U21 national team of Türkiye and 37 non-elite hockey players who playing in the hockey super league and 1. league as a volunteer in the study. In the laboratory where age, height, body weight measurements and appropriate environmental and environmental conditions are provided to the groups. Firstly, the auditory reaction test was applied to the athletes, and then the visual reaction test was applied. Measurements were applied with online computerized programs (for visual reaction, www.humanbenchmark.com; for auditory reaction, www.cognitivefun.net).When statistical analysis of data is done; A significant difference was found in favor of non-elite athletes in the visual reaction test (p<0.05). In the auditory reaction test, a significant difference was found in favor of elite athletes (p<0.05). Consequently, a significant difference in favor of non-elite athletes in the visual reaction time test indicate that visual reaction time of non-elite athletes is better than elite athletes. a significant difference in favor of elite athletes in the auditory reaction time test indicate that auditory reaction time of elite athletes is better than non-elite athletes. In addition, it was concluded that the auditory reaction times of the elite and non-elite hockey players were better than the visual reaction times.
Exploring Predictors of Team Performance in Curling Championships: An Investigation of Factors Predicting Success
Authors: Erhan Süleyman Erim , Ağduman Fatih , Bedir Deniz
Published: December 2023

Curling is one of the most popular sports of the Olympic Winter Games. As strategy is very important for curling, it is called “chess on the ice”. Given the exponential surge in sports-related data, the analysis of game performance has assumed paramount importance, as it provides a valuable avenue for improving overall athletic performance. The aim of this research was to examine the effect of some parameters on championship performance of elite level curling teams. The data used in this study were taken from the World Curling Federation Historical Results database. World Mens/Womens Curling Championships (2021 – 2022 – 2023) and European Mens/Womens Curling Championships results (2019 – 2021 – 2022) included in the study. A multiple linear regression analysis was conducted to determine the extent to which the independent variables, namely Draw Shot Challenge distance, shot performance, stolen points for, stolen points against, hammer efficiency, force efficiency, and difference of generated and given points, explained team success. Statistical Package for Social Sciences 24.0 software used for statistical analyses. The results revealed an R-value of 0.902 and an adjusted R-squared value of 0.804. In the study investigating the factors influencing team success in World and European Curling Championships, it was concluded that the difference of points generated and given points, Draw Shot Challenge distance, and hammer use efficiency predicts championship success.
İki Farklı Ülkede Yaş Grubu Yüzücülerinin, Beslenme, Yüzme Performansı ve Fiziksel Aktivite Düzeylerinin Karşılaştırılması
Authors: Sevük Meral , Özcaldıran Bahtiyar
Published: December 2023

Bu çalışmanın amacı Amerika ve Türkiye’de yüzen yaş grubu sporcularının; beslenme ve fiziksel aktivite alışkanlıkları ile performansları arasındaki farkların karşılaştırılmasıdır. Çalışmaya yaş ortalaması 11,34±0,57 yıl olan 41 Türk ve yaş ortalaması 11,40±0,71 yıl olan 32 Amerikalı sporcu katılmıştır. Çalışmaya katılan tüm sporcular aktif olarak yüzme yarışmalarına katılan lisanslı sporculardır. Çalışmaya katılan sporculara veri toplama aracı olarak anket formu uygulanmıştır. Performans ölçütü olarak çalışmaya katılan tüm sporcuların (n=73), kendi ülkelerinde kış şampiyonalarında yüzdükleri yarışlardan elde ettikleri en yüksek Uluslararası Yüzme Federasyonu (FINA) puanı toplamlarının ortalamaları alınmıştır. Bulgulara göre antropometrik ölçümler değerlendirildiğinde Türk yüzücülerin boy ortalama değerleri 153,85 ± 6,72cm, Amerikaları yüzücülerin 153,75 ± 8.62cm, Türk yüzücülerin vücut ağırlığı ortalama değerleri 40,97 ± 5,57kg, Amerikalı yüzücülerin 41,07 ± 6,7kg olduğu; Türk yüzücülerin %80,5, Amerikalı yüzücülerin %81,3’ünün yeterli ve dengeli beslendiği, yine Türk yüzücülerin %63,4, Amerikalı yüzücülerin %93,7’ünün yüzme antrenmanı dışında düzenli olarak fiziksel aktivite yaptıklarını ifade ettikleri, Türk yüzücülerin FINA puan ortalamalarının 376,4 ± 85,91 puan, Amerikalı yüzücülerin 409,4 ± 108,02 puan olduğu tespit edilmiştir. Sonuç olarak, Amerikalı ve Türk sporcuların öğünlerde tüketilen besin seçimlerinin, günlük TV ve bilgisayar kullanım sürelerinin değişiklik göstermesinin sosyo-kültürel farklılıklardan kaynaklandığı ve bu durumun performans farklılıklarına neden olmadığı, fiziksel aktivite düzeylerindeki farkların ise performans farkının nedeni olabileceği düşülmektedir.