bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of nanoclay (Kaolinite) on mechanical properties of epoxy-fiber composite
Authors: M Hasan Hisham , R Majeed Ahmed 
Published: December 2020

An experimental investigation using drag-out tensile test to calculate the interfacial shear strength for different embedded lengths of Kevlar and carbon fibers reinforced epoxy matrix with nanoclay (kaolinite) for different ratio weight, the interfacial shear strength increased by with increasing of embedded length and ratio weight fraction of nanoclay that adding to epoxy matrix.
Basic Concept on Asymptotes in Calculus
Authors: Pokhrel Jagat Krishna 
Published: December 2020

In analytical geometry an asymptote of a curve is a line such that the distance between the curve and the line approaches zero as one or both of the x or y coordinates tend to infinity. Some source includes the requirements that the curve may not cross the line infinitely often but this is unusual for modern definition. In some content such as algebraic geometry an asymptote is defined as a line which is tangent to a curve at infinity.
In some case a curve may have a branch or branches extending beyond the finite region. In this case of p be a point on such a branch of the curve, having its coordinates (x,y) and if P moves along the curve, so that at least one of x and y tend to + ∞ and to -∞, then P is said to tend to infinites and this we denote by P → ∞
The European Context of the Group Insurance Contract
Authors: Fras Mariusz 
Published: December 2020

The entirety of norms on the relations connected with conclusion and performance of insurance contracts make up economic insurance law. Because of its objective homogeneity, it is generally treated as a separate branch of law. From the dogmatic perspective, its permanent element are group insurance contracts. However, the results of a comparative law research allow to draw the conclusion that in a substantial number of legal systems the term “group insurance” is not to be found in normative acts. In the literature, multiple attempts were made to expound the legal nature of the group insurance contract. Still, there is no consensus as to the nature of the legal relationship arising from conclusion of a group insurance contract. The article concerns the proposal of normative regulation of group insurance contract.
Seismic images of crust and upper mantle in Central Iran (from Jiroft to Ashtian) via teleseismic waves
Authors: JAVADI Shahireh , TAGHIZADEH-FARAHMAND Fataneh , GHEITANCHI Mohammad Reza 
Published: December 2020

A detailed knowledge of the thickness of crust and upper mantle structure is important for understanding a plate tectonics and geodynamics in the region. We use body wave for detecting details of the subsurface structure. The information in this research is collected from a seismic linear profile that extends across the Sanandaj-Sirjan metamorphic zone in seismic states of Central Iran and Zagros. We compute P receiver functions to investigate crustal and upper mantle discontinuities. We use teleseismic events (mb ≥ 5.5, 30° < Δ < 95°) registered between 1996 and 2018 and recorded at 10 short-period stations with 3 components and 17 broadband stations with high signal to noise ratio. The observed depth of Moho in the study area is approximately 50 km and rises to 70 km at the end of the seismic linear profile beneath Sanandaj-Sirjan zone. In Central Iran, depths discontinuities in the transition zone are shown by the reference model of deviation, which can be attributed to the convergence of Arabian plate with the Central Iran plateau. Also, the study area was identified as geothermal susceptibility by SUNA and this observation was confirmed.
Lithospheric model along transect HT-1 across Western Carpathians and Pannonian Basin based on 2D integrated modelling
Authors: DÉREROVÁ Jana , BIELIK Miroslav , KOHÚT Igor , GODOVÁ Dominika , VOZÁR Ján , BEZÁK Vladimír 
Published: December 2020

2D integrated modelling approach was applied to determine the lithospheric structure along transect HT-1 located in the Carpathian-Pannonian Basin–European platform region. Our approach combines simultaneous interpretation of surface heat flow, topography, gravity and geoid data. All available geophysical and geological data were used to create an initial model that has been afterwards modified by trial and error method until reasonable fit was obtained between input data and model predictions. The main focus of our study was the position and shape of the lithosphere-asthenosphere boundary (LAB). In the Pannonian Basin the modelled LAB is at depths of about 80–90 km and rapidly dips towards the Western Carpathians where its depth reaches values 145 to 150 km. Beneath the European platform the LAB depth is about 135–140 km. We can observe a slight lithospheric root under the Western Carpathians. This lithospheric thickening is interpreted as a small remnant of a subducted slab. This result is in a good agreement with the previous lithospheric models in the Carpathian-Pannonian Basin.
Surgical results of nonambulatory patients caused by ossification of the posterior longitudinal ligaments in the thoracic spine: retrospective comparative study between posterior decompression and instrumented spinal fusion versus anterior decompression through a posterior approach
Authors: Aizawa Toshimi , Eto Toshimitsu , Hashimoto Ko , Kanno Haruo , Itoi Eiji , Ozawa Hiroshi 
Published: December 2020

OBJECTIVEThoracic myelopathy caused by ossification of the posterior longitudinal ligament (OPLL) remains one of the most difficult-to-treat disorders for spine surgeons. In Japan, approximately 75% of patients with this condition are treated using posterior decompression with instrumented spinal fusion (PDF). In contrast, anterior decompression is the most effective method for relieving spinal cord compression. The authors treated nonambulatory patients with thoracic OPLL by either PDF or by their technique using anterior decompression through a posterior approach. In this study the surgical results of these procedures are compared.METHODSThis was a retrospective case series. From 2008 to 2018, 9 patients with thoracic OPLL who could not walk preoperatively were treated surgically. Three patients were treated by PDF (the PDF group) and 6 patients were treated by anterior decompression through a posterior approach (the modified Ohtsuka group). The degree of surgical invasion and the neurological conditions of the patients were assessed.RESULTSThe PDF group had a shorter operative duration (mean 477 ± 122 vs 569 ± 92 minutes) and less intraoperative blood loss (mean 613 ± 380 vs 1180 ± 614 ml), although the differences were not statistically significant. The preoperative Japanese Orthopaedic Association (JOA) score was almost identical between the two groups; however, the latest JOA score and the recovery rate were significantly better in the modified Ohtsuka group than in the PDF group (8.8 ± 1.5 vs 5.0 ± 1.7 and 71.3% ± 23.7% vs 28.3% ± 5.7%, respectively). The walking ability was evaluated using the modified Frankel scale. According to this scale, 3 patients showed three grade improvements, 2 patients showed two grade improvements, and 1 patient showed one grade improvement in the modified Ohtsuka group. Three patients in the modified Ohtsuka group could walk without any support at the final follow-up.CONCLUSIONSThe present study clearly indicated that the surgical outcomes of the authors’ modified Ohtsuka procedure were significantly better than those of PDF for patients who could not walk preoperatively.
Spinal laser interstitial thermal therapy: single-center experience and outcomes in the first 120 cases
Authors: Bastos Dhiego C. A. , Vega Rafael A. , Traylor Jeffrey I. , Ghia Amol J. , Li Jing , Oro Marilou , Bishop Andrew J. , Yeboa Debra N. , Amini Behrang , Kumar Vinodh A. , Rao Ganesh , Rhines Laurence D. , Tatsui Claudio E. 
Published: December 2020

OBJECTIVEThe objective of this study was to present the results of a consecutive series of 120 cases treated with spinal laser interstitial thermal therapy (sLITT) to manage epidural spinal cord compression (ESCC) from metastatic tumors.METHODSThe electronic records of patients treated from 2013 to 2019 were analyzed retrospectively. Data collected included demographic, pathology, clinical, operative, and imaging findings; degree of epidural compression before and after sLITT; length of hospital stay; complications; and duration before subsequent oncological treatment. Independent-sample t-tests were used to compare means between pre- and post-sLITT treatments. Survival was estimated by the Kaplan-Meier method. Multivariate logistic regression was used to analyze predictive factors for local recurrence and neurological complications.RESULTSThere were 110 patients who underwent 120 sLITT procedures. Spinal levels treated included 5 cervical, 8 lumbar, and 107 thoracic. The pre-sLITT Frankel grades were E (91.7%), D (6.7%), and C (1.7%). The preoperative ESCC grade was 1c or higher in 92% of cases. Metastases were most common from renal cell carcinoma (39%), followed by non–small cell lung carcinoma (10.8%) and other tumors (35%). The most common location of ESCC was in the vertebral body (88.3%), followed by paraspinal/foraminal (7.5%) and posterior elements (4.2%). Adjuvant radiotherapy (spinal stereotactic radiosurgery or conventional external beam radiation therapy) was performed in 87 cases (72.5%), whereas 33 procedures (27.5%) were performed as salvage after radiotherapy options were exhausted. sLITT was performed without need for spinal stabilization in 87 cases (72.5%). Post-sLITT Frankel grades were E (85%), D (10%), C (4.2%), and B (0.8%); treatment was associated with a median decrease of 2 ESCC grades. The local control rate at 1 year was 81.7%. Local control failure occurred in 25 cases (20.8%). The median progression-free survival was not reached, and overall survival was 14 months. Tumor location in the paraspinal region and salvage treatment were independent predictors of local recurrence, with hazard ratios of 6.3 and 3.3, respectively (p = 0.01). Complications were observed in 22 cases (18.3%). sLITT procedures performed in the lumbar and cervical spine had hazard ratios for neurological complications of 15.4 and 17.1 (p < 0.01), respectively, relative to the thoracic spine.CONCLUSIONSsLITT is safe and provides effective local control for high-grade ESCC from vertebral metastases in the thoracic spine, particularly when combined with adjuvant radiotherapy. The authors propose considering sLITT as an alternative to open surgery in selected patients with spinal metastases.
PENERAPAN PENDEKATAN KONTEKSTUAL MENGGUNAKAN MEDIA GAMBAR BINATANG UNTUK MENINGKATKAN KETERAMPILAN MENDESKRIPSI SECARA TERTULIS SISWA KELAS II SDN PUNIK
Authors: Murtiah Bq. 
Published: December 2020

Abstrak: Penelitian Tindakan Kelas 3 siklus yang terdiri dari tahapan perencanaan, observasi, evaluasi, dan refleksi dengan tujuan untuk mengetahui apakah penerapan pendekatan kontekstual menggunakan media gambar binatang dapat meningkatkan keterampilan mendeskripsi secara tertulis siswa kelas II SDN Punik menggunakan metode observasi, interview, dokumentasi, dan tes. Diperoleh hasil siklus I yaitu 10 dari 22 siswa tuntas atau ketercapaian 45,4%, siklus II yaitu 13 dari 22 siswa tuntas atua ketercapaian 59%, siklus III yaitu 19 dari 22 siswa tuntas atua ketercapaian 86,3%. Disimpulkan bahwa pendekatan kontekstual menggunakan media gambar binatang dapat meningkatkan keterampilan mendeskripsi secara tertulis siswa kelas II SDN Punik Abstract: Class Action Research 3 cycles consisting of planning, observation, evaluation, and reflection stages with the aim to know whether the application of contextual approach using animal image media can improve the skill of descripting in writing the second grade students of SDN Punik using observation method, interview, documentation, and test . The result of cycle I is 10 out of 22 students complete or 45.4% achievement, cycle II is 13 of 22 students complete 59% achievement, cycle III that is 19 out of 22 students complete atua achievement 86.3%. It is concluded that the contextual approach using animal image media can improve the skill of descripting in writing the students of class II SDN Punik
PENGGUNAAN MODEL PEMBELAJARAN DISCOVERY LEARNING UNTUK MENINGKATKAN KREATIVITAS DAN HASIL BELAJAR SISWA KELAS 5 SD NEGERI MANGUNSARI 07
Authors: Setyowati Endah , Kristin Firosalia , Anugraheni Indri 
Published: December 2020

Abstrak: Tujuan penelitian meningkatkan Kreativitas dan Hasil Belajar siswa melalui penggunaan model pembelajaran discovery learning. Jenis penelitian ini PTK subjek penelitian siswa kelas 5. Teknik analisis data berupa nilai tes,data hasil observasi, rubrik kreativitas. Kreativitas Prasiklus siswa kelas V sedang 6 (27,3%) , rendah 16(72,7%). siklus I 5(22,7%) tinggi, 10(45,5%) sedang, dan 7 (31,8%) sangat rendah. Siklus II 4(18%) sangat tinggi, 9(41%) tinggi, dan 9 (41%) rendah. Sedangkan hasil belajar siswa prasiklus Bahasa Indonesia 10(46%). Siklus I 14(64%) pada siklus II 18(82%) .IPA prasiklus 9 (41%), siklus I 13(59%), siklus II 18(82%). SBDP prasiklus 12(54,5%), siklus I 16(73%),siklus II 19(86%). Abstract: The objective of the research is to improve the students' creativity and learning outcomes through the use of learning discovery learning model. Types of this research PTK research subjects students class 5. Data analysis techniques in the form of test scores, observation data, rubric creativity. Prasiklus creativity of grade V students is 6 (27,3%), low 16 (72,7%). cycle I 5 (22,7%) high, 10 (45,5%) medium, and 7 (31,8%) very low. Cycle II 4 (18%) is very high, 9 (41%) high, and 9 (41%) low. While the learning result of students prasiklus Indonesian 10 (46%). Cycle I 14 (64%) in cycle II 18 (82%). Precycles 9 (41%), cycle I 13 (59%), cycle II 18 (82%). SBDP prasiklus 12 (54,5%), cycle I 16 (73%), cycle II 19 (86%).
PENGGUNAAN MODEL PEMBELAJARAN KOOPERATIF TIPE THINK-PAIR-SHARE DISERTAI DEMONSTRASI UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR BIOLOGI KELAS XII SMK PGRI 1 TERBANGGI BESAR
Authors: Wahyuningsih Hesty 
Published: December 2020

Abstrak: Penelitian ini adalah Penelitian Tindakan Kelas (PTK), bertujuan meningkatkan aktivitas dan hasil belajar biologi sebanyak 21 peserta didik yang memiliki tingkat kemampuan yang bervariasi. Peneliti mengamati secara langsung selama 2 siklus. Setiap siklus mempunyai tahapan-tahapan yaitu perencanaan, pelaksanaan tindakan, observasi dan refleksi. Teknik pengumpulan data menggunakan lembar observasi dan tes. Hasil penelitian menunjukkan bahwa penggunaan kooperatif tipe think-pair-share disertai demonstrasi dapat meningkatkan aktivitas dan hasil belajar. Peningkatan aktivitas terlihat pada setiap indikator aktivitas. Peserta didik yang dinyatakan mencapai KKM (nilai ≥ 75) pada siklus I sebesar 76,19%dan pada siklus II meningkat menjadi 90,84%. Saran yang diajukan kepada guru agar aktivitas dan hasil belajar memperoleh hasil yang optimal, maka disarankan untuk menerapkan model kooperatif tipe think-pair-share disertai demonstrasi.Abstract: This research is a Classroom Action Research (PTK), aims to increase the activity and biology learning outcomes as many as 21 students who have varying ability levels. Researchers observed directly for 2 cycles. Each cycle has stages of planning, implementation of action, observation and reflection. Data collection techniques use observation and test sheets. The results showed that the use of cooperative type of think-pair-share with demonstration can increase activity and learning outcomes. Increased activity is seen in each activity indicator. Students who declared to reach KKM (value ≥ 75) in the first cycle of 76,19% and in the second cycle increased to 90,84%. Suggestions submitted to the teacher for activities and learning outcomes to obtain optimal results, it is advisable to apply the model of cooperative type of think-pair-share with the demonstration.
PENGEMBANGAN LEMBAR KERJA SISWA MATERI SPLDV BERBASIS KONTEKSTUAL BERBANTUAN SOFTWARE GEOGEBRA UNTUK SISWA KELAS VIII SMP
Authors: Hayu Kumarawati Dyah , Prihatnani Erlina 
Published: December 2020

Abstrak: Penelitian ini bertujuan untuk mengembangkan LKS berbasis kontekstual berbantuan geogebra yang valid, praktis dan efektif. Penelitian ini menggunakan model pengembangan ADDIE dan telah dinyatakan valid dari aspek materi dan media pembelajaran dengan persentase berturut-turut 92,59% dan 92,80%, termasuk kategori sangat baik. Media ini telah diujicobakan kepada siswa kelas VIII SMP PGRI Banyubiru dan menghasilkan indeks kepraktisan penggunaan sebesar 75%, masuk kategori praktis. Uji pair t-test dengan taraf signifikan α = 0,05 menghasilkan signifikan mendekati nol kurang dari 0,05 dengan rata-rata posttest lebih tinggi daripada pretest. Berdasarkan ketiga hasil uji tersebut maka dapat disimpulkan bahwa media ini valid, praktis, dan efektif. Abstract: This study aims to develop a Geogebra based, contextual, practical and effective contextual-based LKS. This research uses ADDIE development model and it has been stated valid from material aspect and instructional media with percentage of 92,59% and 92,80%, including very good category. This media has been tested to students of class VIII SMP PGRI Banyubiru and produce the practicality of the use index of 75%, entered the practical category. T-test pair with significant level α = 0.05 yields significantly close to zero less than 0.05 with posttest average higher than pretest. Based on the three test results it can be concluded that the media is valid, practical, and effective.
PENGARUH PEMBELAJARAN KOOPERATIF TIPE JIGSAW UNTUK MENINGKATKAN PEMAHAMAN
Authors: Fitriani Eka , Mahsup Mahsup 
Published: December 2020

Abstract: This research aims to determine the effect of cooperative learning of the jigsaw type in improving understanding of the material of elementary algebra students Semester II Study Program Mathematics education FKIP UM Mataram. This type of research is experimental research. The population in this study is all students of the second semester of Mathematics Education Study Program, while the sample of this research is five semester II students. The data collection techniques used are test instruments with a significant level of 5%. Based on the results of the hypothesis test obtained that was done so that the alternative hypothesis (HA) was rejected and the zero hypothesis (Ho) was received. So that it can be concluded that there is no influence of the jigsaw method on the achievement of mathematical learning in the linear program of students Semester II Program of education Studies Mataram FKIP UM MataramTuliskan abstrak dalam bahasa InggrisAbstrak: Penelitian ini bertujuan untuk mengetahui Pengaruh pembelajaran kooperatif tipe jigsaw dalam meningkatkan pemahaman materi Aljabar Elementer mahasiswa semester II Program Studi Pendidikan Matematika FKIP UM Mataram. Jenis penelitian ini adalah penelitian eksperimen. Populasi dalam penelitian ini adalah seluruh mahasiswa semester II program Studi Pendidikan Matematika, sedangkan sampel penelitian ini adalah 5 orang mahasiswa semester II. Tehnik pengumpulan data yang digunakan adalah instrumen test dengan taraf signifikan 5%. Berdasarkan hasil pengujian hipotesis didapatkan yang telah dilakukan sehingga hipotesis alternatif (Ha) ditolak dan hipotesis nol (Ho) diterima. Sehingga dapat disimpulkan bahwa tidak ada pengaruh metode jigsaw terhadap prestasi belajar matematika pada materi program linear Mahasiswa Semester II Program Studi Pendidikan Mataram FKIP UM Mataram.
Scleroderma spp. in Indonesia : Poisoning Case and Potential Utilization
Authors: Permana Putra Ivan 
Published: December 2020

Abstract : Mushroom are functional food which has been consumed for long time due to the various benefits and are rich in nutrients for health. Even though it is not the main food ingredient, local people in Indonesia are accustomed to consuming wild mushroom in the vicinity. One of these mushroom is Scleroderma spp. which grows as ectomycorrhizal mycobiont usually around the Gnetum gnemon L. plant. This study aimed to provide the information regarding poisioning case of Scleroderma in Indonesia and also it’s potential utilization. This paper is a literature-based quantitative research. Several previous studies have confirmed the benefits of this mushroom such as antioxidant, antibacteria, and anti-inflammatory which is beneficial for health. However, the result showed that during the last 10 years, there have been 6 cases of poisoning due to consumption of Scleroderma in Indonesia. A total of 54 people have become victims and 4 of them have died. Scleroderma spp. known to be easily found in various places throughout Indonesia. This mushroom is generally recommended to be consumed only in the young fruiting body phase. Some cases of poisoning are thought to be due to the sclerocitrin content in the fruiting body of this mushroom.Abstrak : Jamur merupakan salah satu bahan pangan yang telah sejak lama dikonsumsi karena memiliki berbagai manfaat dan kaya akan kandungan bahan bioaktif untuk kesehatan. Walaupun belum menjadi bahan pangan utama, masyarakat lokal di Indonesia telah terbiasa untuk mengkonsumsi jamur liar yang ada di sekitarnya. Salah satu dari jamur tersebut adalah Scleroderma spp. yang tumbuh sebagai mikobion pembentuk ektomikoriza umumnya di sekitaran tanaman melinjo (Gnetum gnemon L.). Penelitian ini bertujuan untuk menyediakan informasi mengenai kasus keracunan Scleroderma di Indonesia serta potensi pemanfaatannya. Tulisan ini merupakan penelitian kuantitatif berbasis literatur. Meskipun beberapa penelitian sebelumnya telah mengkonfirmasi manfaat dari jamur ini seperti: antioksidan, antibakteri, dan antiinflamasi yang bermanfaat untuk kesehatan. Selama 10 tahun terakhir, telah terjadi 6 kasus keracunan akibat pengkonsumsian jamur liar Scleroderma di Indonesia. Sebanyak 54 orang telah menjadi korban dan 4 diantaranya meninggal dunia. Scleroderma spp. diketahui mudah ditemukan di berbagai tempat di seluruh Indonesia. Jamur ini umumnya disarankan hanya dikonsumsi pada fase tubuh buah yang masih muda. Beberapa kasus keracunan diduga juga karena kandungan sclerocitrin yang terdapat pada tubuh buah dari jamur ini.
THE EFFECT OF LEARNING MEDIA AND INTEREST IN LEARNING ON ENGLISH LEARNING OUTCOMES
Authors: Apriani Reni 
Published: December 2020

<p>This study aims to determine the Effect of Learning Media Influence and Interest in Learning Outcomes of English in Public Junior High School Students in Lebak Banten. Furthermore,the researcher to find out the effect of learning media interaction and learning interest on learning outcomes using the quantitative experiment method. This study used population of 583 students and sample of 70 students. The research hypotheses tested include: 1) There is a significant effect of learning media on learning outcomes. 2) There is a significant effect of interest in learning on learning outcomes. 3) There is a significant interactive influence on learning media and interest in learning about learning outcomes. Then from the results of the hypothesis test, it was found that 1) there is a significant effect of learning media on the learning outcomes of English students of Lebak region at Junior High School. This is evidenced by the acquisition of the Sig. = 0,000 &lt;0,05 and F count = 16,334. 2) There is a significant effect of interest in learning on the learning outcomes of English students in Lebak region at Junior High School. This is evidenced by the acquisition of Sig. = 0,000 &lt;0,05 and F count = 15,127. 3) There is a significant interaction effect of learning media and learning interest in the learning outcomes of English students of Lebak region Junior High School. This is evidenced by the acquisition of Sig. = 0,000 &lt;0,05 and F count = 13,833.</p>