bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Small Intestine in the Acute Period of Spinal Injury: Early Metabolic Disorders According to Fluorescence-Lifetime Imaging FLIM
Authors: Baleyev M. S. , Kiseleva E. B. , Loginova M. M. , Shirmanova M. V. , Fraerman A. P. , Shcheslavskiy V. I. , Gladkova N. D. , Ryabkov M. G. 
Published: July 2023

RELEVANCE A special place in the development of enteral insufficiency is given to dysproteinemia, which is one of the leading causes of the development of decubital ulcers in patients with spinal cord injury. Early enteral nutrition partially solved this problem, but the incidence of bedsores still remains high and reaches 68%. The risk of metabolic disorders in the acute period of spinal injury is largely determined by non-occlusive intestinal ischemia against the background of spinal shock, neurohumoral dysregulation; intra-intestinal and intra-abdominal hypertension; change in intestinal microflora. Pathological changes in the intestinal wall occur during the first 20 days after injury and further exacerbate chronic maldigestion, malabsorption, intestinal dyskinesia in patients with traumatic spinal cord disease. New knowledge about the features of early enteral nutrition in patients in the acute period of traumatic spinal cord disease will reduce the risk of decubitus ulcerative defects.AIM OF THE STUDY To study the dynamics of metabolic processes in the tissues of the small intestine in the acute period of spinal injury.MATERIAL AND METHODS Wistar rats (n=22). Spinal injury was simulated by acute complete transection of the spinal cord at the level of Th5–Th6 vertebrae. The assessment of metabolic changes in the cells of the serous membrane of the intestine was performed immediately, 3 and 24 hours after injury. The metabolism was assessed in vivo using fluorescence time-resolved macroimaging technology FLIM by autofluorescence in the spectral channel of the metabolic cofactor nicotinamide adenine dinucleotide (phosphate).RESULTS The acute period of spinal cord injury is accompanied by a change in the endogenous autofluorescence of the serous membrane of the small intestine: a statistically significant decrease in the mean fluorescence lifetime (τm), the lifetime of the long component (τ2), and the relative contribution of the long component (а2) in 24 h after injury was recorded. The changes observed using FLIM confirm the catabolic type of metabolism in the tissues of the small intestine after spinal cord injury.CONCLUSION For the first time in the experiment in vivo it has been shown that the acute period of spinal injury is accompanied by a violation of metabolic processes in the tissues of the small intestine. This fact requires a more balanced approach in calculating the calorie content of nutrients used for early enteral nutrition in patients with spinal cord injury.
Latest Technologies, Design Considerations, and Quality Concerns of Additive Polymers Manufacturing
Authors: Vanasarla Hema , Tang Herman , Rufe Phil 
Published: July 2023

Additive manufacturing (AM or 3D printing) is known for large capacities like design freedom, reduced tooling, and production hours. AM evolving exciting advancements for new business models in different industries. Few research papers and studies are limited to material specifications, processes, or quality issues. So, this literature review combined with considerations of AM for polymers materials to quality process to get basic ideas or to lay the groundwork for future researchers. To outline the critical points for investigative queries and identify research gaps in this literature with primarily detailed info on innovation technologies. This review states polymers materials optimization and its manufacturing, all-purpose design considerations, and limitations define CAD source printing and step-by-step quality processes for the fortitude of the analysis to create previous research intended to advantage researchers for future business practices in Industrial revolution 4.0.
Pengembangan Instrumen Penilaian Sikap Disiplin Menggunakan Skala Likert Untuk Mengukur Sikap Disiplin Siswa Di Madrasah Ibtidaiyah
Authors: Huda Nurul , Rizki Afifah , Oktavia Lusi , Ramadhan Syahrul 
Published: July 2023

Tujuan penelitian ini adalah menghasilkan produk penilaian sikap disiplin yang telah diuji kelayakannya. Penelitian ini menggunakan R&D dengan model ADDIE. Uji coba instrumen dilakukan pada tiga puluh siswa kelas VI di MI Ma™arif Bego Yogyakarta. Hasil penelitian menunjukan instrumen sikap disipin layak digunakan berdasarkan perhitungan validitas isi dan Rash Model. Hasil validasi ahli evaluasi sebesar 19,25% dikategorikan validitas tinggi. Hasil validasi ahli bahasa sebesar 18,5% dan ahli sikap 18,75% juga dikategorikan tinggi. Hasil data uji coba instrumen penilaian sikap disiplin selanjutnya dianalisis dengan Rash Model Winsteps. Hasil OUTFIT MNSQ menunjukan 4 butir item yang tidak cocok yaitu (item nomor 15, 19, 8, 14). Hasil PT MEASURE CORR terdapat 2 butir yang tidak cocok yaitu item 3 dan 8. Hasil OUTFIT ZSTD menunjukan 1 butir yang tidak cocok yaitu item 15. Adapun tingkat kesukaran item dinyatakan bagus karena nilai measure berada pada rentang (-2 < Measure < 2). Sedangkan reliabilitas dari segi item menunjukan sebesar 0,82 berada pada kategori sangat tinggi dan person reliability 0,67 menunjukan reliabilitas tinggi. Hal ini berarti kualitas butir pernyataan instrumen sikap disiplin menggunakan Skala Likert reliabilitasnya sangat tinggi.Keywords: Instrumen Sikap Disiplin, Madrasah Ibtidaiyah, Pengembangan, Skala Likert.
Kemampuan Literasi Matematika Mahasiswa Pendidikan Guru Sekolah Dasar Berbasis PMRI
Authors: Rahmawati Ika 
Published: July 2023

Pendidikan Guru Sekolah Dasar (PGSD) merupakan jurusan di perguruan tinggi yang bertugas mencetak calon guru Sekolah Dasar (SD), maka dari itu sangat penting sekali menyiapkan kualifikasi guru SD yang sesuai dengan tuntutan AKM. Salah satu pendekatan yang bisa dilakukan untuk menumbuhkan keterampilan pemecahan masalah, berpikir kritis, kreatifitas, koordinasi dengan sesama serta fleksibilitas kognitif adalah pendekatan dengan masalah kontekstual atau masalah sehari-hari atau dalam matematika yakni PMRI (Pendidikan Matematika Realistik Indonesia). Peneliti melakukan penelitian yang bertujuan untuk mendeskripsikan kemampuan literasi matematis siswa Pendidikan Guru Sekolah Dasar berbasis Pendidikan Matematika Realistik. Penelitian ini menggunakan metode deskriptif kualitatif untuk menggambarkan kondisi dan fakta di lapangan selama proses penelitian, yang dijelaskan secara kata-kata atau deskriptif. Berdasarkan data yang telah diolah, diperoleh hasil bahwa kemampuan literasi matematis siswa pendidikan guru sekolah dasar kurang memadai.Keywords: Literasi Matematika, Pendidikan Guru Sekolah Dasar, Pendidikan Realistik Matematika.
Edukasi Manajemen Waktu Oleh Kepala Sekolah Sebagai Penguatan Karakter Disiplin Waktu Siswa
Authors: Saingo Yakobus Adi 
Published: July 2023

Tujuan penelitian ini untuk menganalisis bagaimana edukasi manajemen waktu oleh Kepala Sekolah sebagai penguatan karakter disiplin waktu siswa kelas V di SD Inpres Lili. Penelitian ini menggunakan metode kualitatif. Pengumpulan data dengan mewawancarai 1 orang kepala sekolah dan 4 orang peserta didik kelas V. Data dianalisis berdasarkan indikator manajemen waktu dan dideskripsikan secara bermakna. Hasil Penelitian ditemukan bahwa Kepala Sekolah telah melaksanakan aktifitas edukasi manajemen waktu sesuai dengan indikator manajemen waktu dengan baik secara rutin bagi peserta didik kelas V yang menambah pengetahuan pedagogis dalam penguatan karakter disiplin waktunya.Keywords: Manajemen Waktu, Kepala Sekolah, Karakter, Disiplin Waktu.
Implementasi Appreciative Inquiry dalam Perencanaan Strategis untuk Meningkatkan Mutu Pendidikan Sekolah Dasar
Authors: Lase Destin Ricardo , Iriani Ade , Waruwu Marinu 
Published: July 2023

Peningkatan mutu sekolah perlu perencanaan strategis. Penelitian ini bertujuan untuk mengimplementasikan Appreciative Inquiry dalam perencanaan strategis untuk meningkatkan mutu pendidikan pada Sekolah Dasar. Subjek penelitian adalah kepala sekolah, para guru dan pengurus Yayasan. Pengumpulan data melalui observasi, wawancara, Focus Group Discussion (FGD) dan studi dokumen. Analisis data menggunakan model Miles dan Huberman yang terdiri dari: reduksi data, penyajian data, triangulasi sumber, serta penarikan kesimpulan. Hasil penelitian: 1) Perencanaaan strategis memiliki peran penting dalam memberi arah dan petunjuk untuk mencapai visi dan misi sekolah; 2) Implementasi Appreciative Inquiry memberi paradigma baru dalam penyusunan strategi berdasarkan potensi, kekuatan serta sumber daya yang ada untuk meraih masa depan yang lebih baik; 3) Appreciative Inquiry mendorong setiap individu untuk berkontribusi pada organisasinya sesuai dengan sumber daya manusia yang memiliki.Keywords: Appreciative Inquiry, Perencanaan Strategis, Mutu Sekolah
21st Century Learning: 4C Skills In Case Method And Team Based Project Learning
Authors: Handayani Peny Husna , Marbun Sariana , Novitri Dwi Maya 
Published: July 2023

The life of the 21st century presents its own challenges in the world of education, namely how in the learning process students are provided with skills to survive in the global world of the 21st century. The purpose of this study is to describe how well the 2nd century (4C) skills possessed by Early Childhood Education Teacher students are in case-based lectures and team based projects. The approach used in this research is quantitative and the method used is descriptive. The sample in this study were 2nd, 4th, and 6th semester students, totaling 450 students. The data collection technique is through filling out questionnaires about 4C skills which are carried out by self and peer assessment online by students. The results show that students' critical thinking and creativity are in the good category with an average critical thinking score of 83.7 and creativity of 85.4. Meanwhile, the communication (87.4) and cooperation skills (89.7) of students are in the very good category. Case-Method and team-based projects learning can help develop 4C skills as 21st century skills.Keywords: 21st century learning, critical thingking, creativity, communication, collaboration, 4C skills
Development Of Stem-Based Interactive Multimedia On Human Digestive System For Elementary School
Authors: Khairani Liza Ayu , Djulia Ely , Bunawan Wawan 
Published: July 2023

This study aims to determine the feasibility of using STEM-based interactive multimedia on human digestive system for elementary school. This research is a Research and Development which refers to the ADDIE model which consists of 5 stages, namely the analysis, design, development, implementation, and evaluation stages. Data collection techniques in this study were observation, interviews, and validation. This research was conducted in class V. The results showed the multimedia was valid in terms of media by 91,20%, in terms of material by 94.44%, and interms of instructional design by 93,33%. This multimedia is œVery Feasible for participants touse in learning education. Furthermore, the results of the assessment from the teacher obtained 93% and limited trials by students obtained 94% which is in the very good category.Keywords: Interactive Multimedia, STEM, Elementary School.
Kompetensi Pedagogik Di Era Society 5.0: Sebuah Tinjauan Dalam Perspektif Pedagogik Kritis
Authors: Baharizqi Sindi Ladya , Muhtar Tatang , Herlambang Yusuf Tri , Nur Fahrozy Fazrul Prasetya 
Published: July 2023

Penelitian ini bertujuan untuk mengetahui serta mendeskripsikan bagaimana Kompetensi Pedagodik di era society 5.0: Sebuah tinjauan dalam perspektif Pedagogik Kritis. Penelitian ini menggunakan metode penelitian kualitatif yang bersifat studi literatur (library research). Tujuan dari penulisan artikel ini mengkaji mengenai pedagogi kritis dalam pendidikan, pedagogi kritis ini diartikan sebagai teori pendidikan dan praktik pembelajaran yang dirancang untuk meningkatkan kesadaran kritis siswa terhadap situasinya sendiri, sehingga memperoleh kebebasan untuk belajar. Karena pedagogi kritis membimbing guru untuk menciptakan pembelajaran yang bermakna. Guru harus menguasai berbagai jenis pengetahuan, seperti pengetahuan akademik, pedagogik, sosial dan budaya. Guru harus mampu berpikir kritis, merespon perubahan dan memecahkan masalah. Adapun artikel yang digunakan merupakan artikel keluaran 10 tahun terakhir dan berindeks. Berdasarkan hasil studi pendahuluan menunjukkan bahwa pedagogik kritis penting bagi guru dalam mencapai tujuan pembelajaran serta berdasarkan studi pustaka pedagogik kritis dapat mencapai tujuan pendidikan.Keywords: Kompetensi Pedagogik, Era Scociety 5.0, Pedagogik Kritis.
Inovasi Lembar Kerja Peserta Didik Berbasis Discovery Learning Untuk Kelas IV Sekolah Dasar
Authors: Sitohang Risma , Simanjuntak Sorta , Haliza Yana 
Published: July 2023

Penelitian ini bertujuan untuk mengetahui validitas, praktikalitas dan efektivitas LKPD berbasis Discovery Learning pada tema Indahnya Keberagaman Di Negeriku Kelas IV berdasarkan hasil uji coba lapangan. Jenis penelitian ini merupakan penelitian pengembangan (Research and Development) dengan menggunakan desain ADDIE. Subjek penelitian yaitu peserta didik kelas IV Madrasah Ibtidaiyah Swasta Addini. Teknik pengumpulan data menggunakan wawancara, angket, tes dan dokumentasi. Teknik analisis data menggunakan pendekatan kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa LKPD yang dikembangkan termasuk dalam kategori œSangat Layak dengan persentase dari hasil validasi ahli materi menunjukkan 88% dan hasil validasi desain menunjukkan 82%. Praktikalitas LKPD diperoleh melalui hasil penilaian oleh ahli praktisi pendidikan dengan hasil persentase 90% dan termasuk kedalam kategori Sangat Praktis. Efektivitas LKPD pada Pre-test memperoleh rata-rata ketuntasan sebesar 62% dan setelah melaksanakan pembelajaran dengan menggunakan LKPD Berbasis Discovery Learning mengalami peningkatan Post-test sebesar 90% dengan kriteria ketuntasan œTuntas dan œSangat Efektif. Dapat disimpulkan bahwa LKPD berbasis Discovery Learning sangat layak, sangat praktis, dan sangat efektif digunakan pada Tema Indahnya Keberagaman di Negeriku Kelas IV Madrasah Ibtidaiyah Swasta Addini T.A 2021/2022.Keywords: LKPD, Discovery Learning, Berpikir Kritis
Etos Kerja Sebagai Variabel Dominan Pada Model Pengembangan Kinerja Pegawai Atas Variabel Adaptasi Digital, Komitmen Organisasi, Adversity Quotient, Dan Etos Kerja
Authors: Azhari Yan , Nasrun Nasrun , Darwin Darwin 
Published: July 2023

Tujuan Penelitian ini adalah untuk menganalisis pengaruh adaptasi digital dan komitmen organisasi terhadap Adversity Quotient Pegawai; pengaruh adaptasi digital dan komitmen organisasi terhadap etos kerja pegawai; pengaruh adaptasi digital, komitmen organisasi, Adversity Quotient dan etos kerja terhadap kinerja pegawai. Penelitian ini dilakukan pada pada Tenaga Kependidikan di Universitas Negeri Medan dengan melibatkan 130 orang sebagai sampel. Untuk pengumpulan data dilakukan dengan menggunakan kuesioner dengan lima pilihan jawaban. Instrumen yang digunakan terlebih dahulu diujicobakan kepada responden di luar sampel. Hasil penelitian menunjukkan: (1) Adaptasi Digital berpengaruh langsung positif terhadap Adversity Quotient sebesar Ï31=0,425; (2) Komitmen Organisasi berpengaruh langsung positif terhadap Adversity Quotient sebesar Ï32=0,500; (3) Adaptasi digital berpengaruh langsung positif terhadap etos kerja sebesar Ï41=0,555; (4) Komitmen organisasi berpengaruh langsung positif terhadap etos kerja sebesar Ï42=0,411; (5) Adaptasi Digital berpengaruh langsung positif terhadap kinerja sebesar Ï51=0,155; (6) Komitmen organisasi berpengaruh langsung positif terhadap kinerja sebesar Ï52=0,250; (7) Adversity Quotient berpengaruh langsung positif terhadap kinerja sebesar Ï53=0,122; (8) Etos kerja berpengaruh langsung positif terhadap kinerja sebesar Ï54=0,492. Berdasarkan penerimaan hipotesis penelitian maka ditemukan model teoritik atau fixed model yang menggambarkan struktur hubungan kausal antara variabel adaptasi digital pegawai, komitimen organisasi, adversity quotient, etos kerja, dan kinerja pegawai di Universitas Negeri Medan.Keywords: Adaptasi Digital, Adversity Quotient, Etos Kerja, Kinerja Pegawai, Komitmen Organisasi
Model Pembelajaran Problem Based Learning (PBL) Pada Pembelajaran Tematik Di Sekolah Dasar
Authors: Ahmad Syafri , Aryanti Dina , Kurniawan Romi 
Published: July 2023

Penelitian ini bertujuan untuk mendeskripsikan pelaksanaan pembelajaran tematik terpadu menggunakan model Problem Based Learning (PBL) di kelas IV SD Negeri 03 Alai Kota Padang. Penelitian ini menggunakan pendekatan kualitatif dan kuantitatif dalam bentuk penelitian tindakan kelas. Subjek penelitian terdiri dari 27 orang, yaitu guru dan siswa kelas IV SD Negeri 03 Alai Kota Padang. Hasil penelitian menunjukkan adanya peningkatan dalam pelaksanaan pembelajaran. Pada siklus I, persentase rata-rata pelaksanaan guru mencapai 70%, dan meningkat menjadi 95% pada siklus II. Sementara itu, persentase rata-rata pelaksanaan siswa juga mengalami peningkatan dari 70% menjadi 90%. Selain itu, hasil belajar siswa juga mengalami peningkatan yang signifikan. Pada siklus I, persentase ketuntasan belajar siswa hanya mencapai 33.33%, namun meningkat menjadi 100% pada siklus II. Dalam konteks pembelajaran tematik terpadu, penelitian ini menyimpulkan bahwa penerapan model PBL memberikan dampak positif. Melalui partisipasi aktif siswa dalam memecahkan masalah, keterampilan dan pemahaman siswa dapat meningkat. Oleh karena itu, disarankan kepada para guru di sekolah dasar untuk mempertimbangkan penggunaan model PBL dalam pembelajaran tematik terpadu guna meningkatkan kualitas pembelajaran dan hasil belajar siswa.Keywords: Pembelajaran Tematik Terpadu, Problem Based Learning.
Polyurethane Membranes From Red Seaweeds For Ammonia Adsorption
Authors: Kamila Nurul , Marlina Marlina , Mustafa Irfan , Nurman Salfauqi , Saiful Saiful 
Published: July 2023

Polyurethane (PU) membranes were prepared from red seaweed (Gracilaria sp.), castor oil, Toluene Diisocyanate (TDI), and added benzoyl peroxide (BPO) additive to improve membrane performance. The membrane is applied for the adsorption of ammonia in the solution. FT-IR analysis showed the presence of functional group N = C = O at a wavenumber of 2276 cm-1 and the O-H functional group at a wave number of 3373.50 cm-1, indicating the urethane group's formation has been formed during membrane polymerization. SEM images showed the morphological structure of the PU membrane, where the more open structure of the PU membrane by the addition of BPO. The DSC and TGA results showed the membrane's thermal stability with the addition of BPO. The PU membrane has an optimum contact time for ammonia uptake of 40 minutes. The adsorption isotherm of ammonia by the PU membrane follows the Freundlich isotherm model. The adsorption capacity of the PU membrane with the addition of BPO additives was 13.2 mg/g, which shows that the adsorption capacity of the PU-BPO membrane has a better performance than a membrane without the addition of the BPO. The PU-BPO membrane could be used as an alternative method of ammonia removal.
Evaluation of Serum Ghrelin and Leptin Levels in Patients with Celiac Disease, Type1Diabetes Mellitus and Rheumatoid Arthritis
Authors: Mustafa Nisreen W. , Elia Zaid N. , Jarjes Sanaria F. 
Published: July 2023

Ghrelin and leptin are two hormones that possess multiple functions, including appetite regulation, maintenance of the tissue homeostasis and regulation of proinflammatory cytokines. A few studies on serum ghrelin and leptin levels in autoimmune diseases have exhibited conflicting results. Therefore, the present study aimed to investigate the relationship between the two energy balance hormones and autoimmune diseases. Serum ghrelin and leptin levels were assessed in 94 adult patients, 61 females and 33 males, with various autoimmune diseases (celiac disease, type 1 diabetes mellitus and rheumatoid arthritis) as well as in 35 healthy people as controls, using commercially available ELISA kits. Statistically important distinctions (P < 0.05) were found between the patients and controls with regard to serum ghrelin and leptin levels. Moreover, females had higher mean serum ghrelin and leptin levels than males. On the other hand, serum ghrelin level was positively correlated with serum leptin levels (r = 0.399, P < 0.05) in the RA group. Whereas no significant correlation (P > 0.05) was found between serum ghrelin and leptin levels in both CD and T1DM groups. As well as the correlation of the diseases biomarkers (tissue transglutaminase antibodies, anti-tTG; glutamic acid decarboxylase antibodies, anti-GAD; and cyclic citrullinated peptide antibodies, anti-CCP) with ghrelin/leptin levels revealed that anti-CCP was the only marker that significantly (P < 0.05) associated with ghrelin and leptin in patients with RA. The current study indicates a linkage between the immune system and metabolic hormones depending on response to different autoimmune conditions. Additional studies are required to understand whether changes in ghrelin-leptin levels influence the emergence of autoimmune diseases or vice versa.
Integration of Sunflower and Sorghum Water Extracts Applied Alone or in Combination With Reduced Doses of Chevalier for Weed Control in Wheat
Authors: Fadhel Laith Z. , AL-Behadili Alaa A. J. 
Published: July 2023

Field trial was conducted with the aim of utilizing extract of allelopathic crop to reduce the use of synthetic herbicides in wheat fields. Sorghum extract at 12 L /ha, sunflower extract at 12 L /ha, combination of sorghum and sunflower extracts at 12 L /ha and chevalier at 25, 50 and 100% of recommended dose were applied alone or in combination with each other. Weed free and weedy check treatments were included for comparison. The experiment was conducted in a randomized complete block design with three replications. The results showed that the recommended dose of chevalier treatment recorded lowest means of weed density 15.7, 23.7, 25.3 and 27.9 weeds m-2and weeds dry weight 13.4, 16.4, 23.3 and 29.2 g m-2 and gave highest percentage of weed control 71.4, 67.4, 64.3 and 63.0% after 60, 75, 95 and 115 days of planting respectively, without significant difference on the sorghum water extract + sunflower water extract at 12L/ha +50% of treatment. Also, the recommended dose of chevalier treatment had highest mean of number of spikes 368.6 spike m-2, grain yield 5.75 ton ha-1, biological yield 17.70 ton ha-1 and harvest index 32.55% without significant difference in the sorghum water + sunflower water extracts at 12L/ha +50% of treatment in the grain yield and biological yield also without significant difference on the sorghum water extract + sunflower water extract at 12 L/ha) +33% of recommended chevalier treatment in the grain yield and biological yield. We can conclude that the allelopathic effects of sorghum and sunflower extracts with chevalier herbicide at half dose gave positive results in weeds control while improving the grain yield of wheat without a significant difference with the spraying of the chevalier herbicide at full dose.These results were a clear indication that the presence of the extracts had a synergistic or cumulative additive role with the low doses of chevalier herbicide that contributed to raising its efficacy in weeds control.