bluuebunny/crossref_metadata_2025_split huggingface dataset:
The influence of the parameters of the running systems of wheeled vehicles on the change in soil density
Authors: Shilo I. N. , Romanyuk N. N. , Kruk I. S. , Orda A. N. , Galimov R. R. , Maksimovich K. Y. , Voynash S. A. , Luchinovich A. A. 
Published: January 2022

The movement of wheeled vehicles on soils and grounds leads to a change in their density. The research includes the influence of mass and its distribution along the axes of the wheels on the change in the density of soils and grounds. The substantiation of analytical dependencies for determining the density of compacted and flowing soils and soils from repeated impacts of wheels under various loads is given. The dependence for determining the density of the soil in the general case, including compressed and fluid components of the state of the soil and soil mass, was substantiated.
The experimental laboratory studies were carried out on the effect of wheels on the soil and the effect of wheel load on soil compaction. The dependences were obtained to determine the compaction of soil with different physical and mechanical properties under different loading modes of the running systems. It was found that the distribution of the mass of a wheeled vehicle along the axles of the wheels affects the depth of the track and the compaction of the soil. The obtained dependences for describing the process of soil compaction are consistent with the results of experiments. It was found that with an increase in the number of axles of the running system, soil compaction decreases. The minimum track depth and soil compaction are observed when the mass of the wheeled vehicle is evenly distributed along the axes of the chassis. With an increase in the number of axles, the influence of the ratio of the pressure of the first wheel to the average pressure on soil compaction decreases due to a decrease in the differential pressure of the wheels that occurs in multi-axle wheel systems. With slight deviations from the unit of the ratio of the front wheel load to the average value of the pressure, the increase in soil density is not perceptible. As the front-to-middle load ratio increases, soil compaction increases significantly compared to an even weight distribution along the axles.
Evaluation of the offset of the angular scale to improve the control accuracy of the single-cylinder engine
Authors: Abramov P. V. 
Published: January 2022

A significant reduction in the cost of controlling a single-cylinder engine with positive ignition for small-scale mechanization can be achieved by replacing material sensors with virtual ones. The information required for control can be extracted from the crankshaft speed. The reliability of the mixture composition estimate based on the intracycle variation of the crankshaft angular velocity depends on many factors, including the installation accuracy of the position sensor of the given shaft and the synchronization disk or other element for determining the angular position of the crankshaft in the selected reference system.
The properties of a single-cylinder engine are revealed. These make it possible to significantly weaken the effect of the displacement of the angular scale on the accuracy of assessing the composition of the mixture by the kinematic parameters of the engine operation, as well as to evaluate the displacement itself.
The experiments were carried out on a general-purpose engine Honda iGX440 with a displacement of 0,44 liters, equipped with an experimental electronic control system for fuel injection, ignition and throttling. The hydraulic brake was used as the load.
The displacement of the angular scale can be determined in various ways: by the deviation of the phase of the harmonic of the kinetic energy of the crank mechanism of any observed order at the extremum of the dependence of this phase on the ignition timing, all other things being equal; by the shift of the derivative with respect to the ignition timing of the specified dependency; by the shift of the dependence of the difference of this phase and the ignition timing from the latter; by the deviation of the phase of the harmonics of the kinetic energy of the crank mechanism of higher orders at the ignition timing, leveling the effect of the displacement of the scale on the phase of the fundamental harmonic of the kinetic energy of the crank mechanism.
Refinement of the position of the crankshaft by evaluating the displacement of the scale by the proposed methods will preserve the necessary accuracy of control of the ignition advance angle on single-cylinder engines while increasing the tolerance for the installation of elements for determining the angular position of the crankshaft.
Potensi Pemanfaatan Gas Karbon Dioksida (CO2) sebagai Density Agent untuk Larutan Pemisah Cangkang dan Kernel Sawit
Authors: Muhammad Muhammad , Marwan Marwan , Zaki Muhammad , Munawar Edi 
Published: January 2022

In order to achieve the national target of decarbonization by 2030, Palm oil mills (POM) can contribute to reducing CO2 emissions generated from their production activities. The CO2 emitted from POM is currently discharged into the environment without further treatment. As a result, the amount of CO2 in the atmosphere will rise, increasing global warming. This study proposes an approach of utilizing CO2 as a density agent in separation fluid formulation. The formulated fluid is then used to separate palm shells and kernels in the claybath. The solubility of CO2 in water occurs physically and is dependent on temperature and partial CO2 gas in the air. Monoethanolamine (MEA) was used as an absorbent to ensure the full interaction of CO2 with water. The chemisorption method is selected to dissolution CO2 into aqueous MEA. The mass ratios of MEA were varied by 10, 20, 30, 40, 50 % w/w. The achieved appropriate densities of formulated fluid were 1,11, 1,14, dan 1,17 g/cm3 at mass ratios of MEA:H2O is 30, 40, dan 50% w/w, respectively. All achieved densities fall between palm shells and kernels densities. Furthermore, the formulated fluid can be used as separation fluid in claybath for separating palm shells and kernels. In addition to the proposed idea of utilizing CO2 and, at the same time, reducing CO2 emission from POM.
Politik Pembangunan Desa dalam Program Saemaul Undong di Desa Ponjong, Kabupaten Gunung Kidul, Yogyakarta
Authors: Gultom Yohansen Wyckliffe 
Published: January 2022

Program Saemaul Undong yang pernah diterapkan di era Presiden Park Chung Hee 1963-1979, telah menjadi gerakan global di Asia dan Afrika. Melalui Saemaul Globalization Foundation (SGF) Korea Selatan, program Saemaul Undong telah diterapkan di beberapa desa di Indonesia, salah satunya Desa Ponjong, Kabupaten Gunung Kidul Yogyakarta. Penerapannya dipadukan dengan Undang-Undang Desa No. 6 tahun 2014. Akibatnya, di desa Ponjong, peran BUMDes bergerak semakin optimal, dengan penguatan pengorganisasian desa, penentuan produk unggulan; kandang sapi komunal dan gedung serbaguna. UU Desa No. 6 pasal 91 sebenarnya membuka ruang bagi desa di Indonesia untuk meniru pola itu, dengan bekerja sama dengan pihak ke-3 dan strategi dalam program Saemaul Undong di Desa Ponjong bisa menjadi opsi bagi desa di Indonesia dalam memperluas kerjasamanya dengan pihak ke-3. Metodologi di dalam studi ini, dilakukan dengan pendekatan aktor dan sistem politik. Metode yang digunakan dalam menganalisis data menggunakan metode deskriptif kualitatif, untuk menemukan gambaran yang utuh antara peran aktor dan sistem, serta untuk menemukan berbagai program yang terdapat di dalam pelaksanaan program Saemaul Undong di Desa Ponjong Kabupaten Gunung Kidul, Yogyakarta tahun 2015-2019. Metode pengumpulan data, dengan menggunakan teknik wawancara mendalam dan observasi langsung ke lapangan, serta merujuk pada studi pustaka yang ditemukan dari referensi sekunder dan data yang ditemukan di Desa Ponjong, Kabupaten Gunung Kidul, Yogyakarta.

Kata Kunci: Pembangunan Desa, Saemaul Undong, UU Desa No. 6 tahun 2014
Pola Komunikasi Ustaz Dan Santri Dalam Proses Pembelajaran Kitab Bulughul Maram Materi Tentang Silaturahmi Di Pondok Pesantren Nurul Falah Air Mesu
Authors: Fatimah Fatimah , Nasrun Nasrun , Musyarofah Anna 
Published: January 2022

Tujuan penelitian ini adalah 1) Untuk mengetahui bagaimana pola komunikasi ustaz dalam perencanaan pembelajaran kitab bulughul maram materi tentang silaturrahmi di Pondok Pesantren Nurul Falah Air Mesu Timur. 2) Untuk mengetahui faktor apa saja yang mempengaruhi pola komunikasi ustaz dan santri dalam proses pembelajaran kitab bulughul maram materi tentang silaturrahmi di Pondok Pesantren Nurul Falah Air Mesu Timur. Penelitian ini menggunakan jenis penelitian deskriptif kualitatif, yaitu melalui sumber data primer dan sumber data sekunder. Metode pengumpulan datanya dengan observasi, dokumntasi, wawancara. Teknis analisisnya dengan reduksi data, penyajian data dan menarik kesimpulan. Dari penelitian ini dapat dianalisis bahwa belajar kitab bulughul maram tergantung pembawaan seorang ustaz, semakin luas pengetahuan ustaz semakin mudah ia memberikan pengajaran. Hasilnya adalah komunikasi yang digunakan adalah lansung. Dalam proses pembelajaran pada hakikatnya merupakan proses komunikasi, yaitu proses penyampaian pesan dari komunikator (guru) kepada komunikan (siswa) dengan menggunakan saluran media tertentu. Tanpa komunikasi maka tidak akan tercapai secara maksimal dalam mendapatkan sebuah hasil yang diinginkan
Pengaruh Kepribadian Guru Pendidikan Agama Islam Terhadap Motivasi Siswa Berjilbab Kelas VI di SD Negeri 18 Sungaiselan Kabupaten Bangka Tengah
Authors: Susilawati Susilawati , Janawi Janawi , Musyarofah Anna 
Published: January 2022

Penelitian ini bertujuan untuk mengungkapkan pengaruh antara kedua variabel tersebut. Penelitian ini menggunakan jenis penelitian kuantitatif deskriptif dengan menggunakan rumus regresi linier sederhana. Adapun teknik pengumpulan data menggunakan angket tertutup, dokumentasi. Data yang telah dikumpulkan selanjutnya akan dianalisis dengan menggunakan bantuan program SPSS 22.0. Hasil yang diperoleh dari penelitian pengaruh kepribadian guru pendidikan agama Islam terhadap motivasi siswa berjilbab kelas VI di SD Negeri 18 Sungaiselan Kabupaten Bangka Tengah, sesuai dengan hasil pengujian hipotesis menunjukkan bahwa jika nilai Thitung > Ttabel pada taraf signifikasi 5% (0,05) dengan angka 3 angka 2,789 > 1,739 berarti Ha diterima dan Ho ditolak. Sedangkan besar pengaruh antara variabel X terhadap Y sebesar 31,4 % dengan melihat tabel R Square (koefisien determinasi) R2= 0,314 X 100 = 31,4 % dan sisanya 68,6 % dipengaruhi faktor lain. Dengan demikian disimpulakan bahwa terdapat pengaruh yang signifikan antara kepribadian guru pendidikan agama Islam terhadap motivasi siswa berjilbab. Adapun bentuk persamaan regresi sesuai dengan yang diperoleh pada tabel Coefficientsa diperoleh nilai konstanta 13,196 dan niali koefisien b1 (kepribadian guru PAI) sebesar 0,579. Maka bentuk persamaan regresi linier sederhana Ŷ = 13,196 + 0,579X.
Pengaruh Gerakan Literasi Sekolah (GLS) Terhadap Kebiasaan Membaca Siswa di SD Negeri 1 Koba Kabupaten Bangka Tengah Tahun Ajaran 2019/2020
Authors: Vitaloka Vitaloka , Sulaiman Rusdy , Munir Misbahul 
Published: January 2022

Penelitian ini bertujuan untuk mengetahui Pengaruh Gerakan Literasi Sekolah (GLS) Terhadap Kebiasaan Membaca Siswa di SD Negeri 1 Koba Kabupaten Bangka Tengah . pendekatan penelitian yaitu pendekatan deskriptif kuantitatif. Sampel penelitian siswa kelas 4 dan 5 berjumlah 168 siswa. Pengumpulan data dengan metode Angket dan dokumentasi. Uji keabsahan data dengan uji validitas dan uji reliabilitas. Analisis data dengan deskripsi data, uji prasyarat dan uji hipotesis dengan bantuan SPSS 16.0. hasil penelitian menunjukkan bahwa terdapat pengaruh yang tinggi antara gerakan literasi sekolah dengan kebiasaan membaca siswa. Hasil analisis diperoleh thitung = 6.158, sedangkan ttabel = 1.669 dengan N = 63 pada taraf signifikansi 0,05, berarti thitung > ttabel dengan angka 6.158 > 1.669. dapat ditarik kesimpulan bahwa Ha diterima dan Ho ditolak. Hasil korelasi antara variabel gerakan literasi sekolah dan kebiasaan membaca siswa bahwa Ha diterima dan Ho ditolak berjumlah 0,619. Hal ini menunjukkan hubungan yang tinggi antara gerakan literasi sekolah dengan kebiasaan membaca siswa. Hasil persamaan regresi Linear sederhana yaitu Ÿ = 16.634 + 0,575X. sehingga terbukti bahwa gerakan literasi sekolah berpengaruh signifikan terhadap kebiasaan membaca siswa sebesar 38,3%. Kemudian untuk 61,7% dipengaruhi oleh faktor-faktor lainnya yang tidak dijadikan sebagai variabel independent, seperti motivasi belajar, lingkungan anak dan lainnya.
Pengaruh Kemampuan Guru PAI dan Keterampilan Mengelola Kelas Terhadap Peningkatan Adversity Quotient Siswa Kelas XII SMK Negeri 2 Kota Pangkalpinang
Authors: Utami Yodea Putri , Jamali Yusra , Isro'i Nurul Faqih 
Published: January 2022

Penelitian ini bertujuan untuk mengetahui (1) Pengaruh kemampuan guru PAI terhadap peningkatan adversity quotient siswa, (2) Pengaruh keterampilan guru PAI mengelola kelas terhadap peningkatan adversity quotient siswa, (3) Pengaruh secara bersama-sama antara kemampuan guru PAI dan keterampilan mengelola kelas terhadap adversity quotient siswa. Penelitian ini dilakukan di SMK Negeri 2 Kota Pangkalpinang. Penelitian ini merupakan penelitian kuantitatif Subjek yang dianalisis dalam penelitian ini sebanyak 205 orang siswa yang mengacu pada pengambilan sampel dari tabel Morgan dan Krejcie. Hasil penelitian ini menunjukan: (1) Terdapat pengaruh positif dan signifikan kemampuan guru PAI terhadap adversity quotient siswa SMK Negeri 2 Kota Pangkalpinang. (2) Terdapat Pengaruh positif dan signifikan keterampilan mengelola kelas terhadap adversity quotient siswa SMK Negeri 2 Kota Pangkalpinang. (3) Terdapat pengaruh positif dan signifikan antara kemampuan guru PAI dan keterampilan mengelola kelas terhadap peningkatan adversity quotient siswa SMK Negeri 2 Kota Pangkalpinang
Latsar Penerapan Model Pembelajaran Jigsaw Untuk Mata Diklat Akuntabilitas Pada Pelatihan Dasar Calon Pegawai Negri Sipil Provinsi Kepulauan Bangka Belitung Tahun 2019
Authors: Habibah Enny 
Published: January 2022

Inovasi pembelajaran merupakan upaya penemuan atau pembaharuan dalam sistem pembelajaran yang dilakukan dengan tujuan mendapatkan kualitas pendidikan yang lebih baik, efektif dan efisien, hal mutlak harus dilakukan oleh widyaiswara. Penelitian ini bertujuan untuk mengetahui bagaimana efektivitas model pembelajaran jigsaw yang diterapkan untuk mata diklat Akuntabilitas kepada 320 peserta pelatihan dasar CPNS di lingkungan Provinsi Kepulauan Bangka Belitung tahun 2019. Penelitian dilakukan dengan pendekatan diskriptif kualitatif, menggunakan alat ukur berupa kuesioner yang berisi daftar pertanyaan yang berhubungan dengan variabel kajian. Hasil penelitian menunjukkan 18,125 % peserta menyatakan model pembelajaran Jigsaw sangat efektif diterapkan untuk mata diklat Akuntabilitas, 71,250 peserta menyatakan model pembelajaran jigsaw efektif diterapkan untuk mata diklat Akuntabilitas, 8,125% peserta menyatakan model pembelajaran jigsaw kurang efektif diterapkan untuk mata diklat Akuntabilitas dan 2,50% peserta menyatakan penerapan model pembelajaran jigsaw tidak efektif untuk diterapkan pada mata diklat Akuntabilitas pelatihan dasar CPNS. Dapat disimpulkan bahwa model pembelajaran jigsaw sangat efektif diterapkan untuk mata diklat Akuntabilitas pada pelatihan dasar CPNS Provinsi kepulauan Bangka Belitung tahun 2019.
Usefulness of Elevated Troponin to Predict Severity in Patients with COVID-19
Authors: Nowaz Kazi Alam , Haque AFM Shamsul , Sultana Syeda Aleya , Malek Mohammad Abdul , Rahman Waliur , Kamal Mostafa , Haque Md Sanaul , Farjana Jinat , Khondaker Md Noornabi 
Published: January 2022

Background: Coronavirus disease 2019 (COVID-19) has produced a significant health burden worldwide. Recent studies had shown that cardiac injury in COVID-19 is not uncommon and may leads to death. The aim of this study was to assess cardiac troponin in patients with COVID-19 and to evaluate the incidence of myocardial injury.
Methods: A cross-sectional study was designed among 100 hospitalized patients with moderate to severe COVID-19 in Combined Military Hospital (CMH), Dhaka from January to April, 2021, after considering inclusion and exclusion criteria, study population was divided into two groups on the basis of normal and elevated troponin level.
Results: Participants had mean age of 67.33 ± 7.63 years with 76% men. 42% population had elevation in troponin levels. Risk factors like age, Diabetes (DM), C-reactive protein (CRP), Lactate dehydrogenase (LDH), D- Dimer, Ferrtin level were more in elevated troponin group and statistically significant. Troponin levels significantly increased with increasing severity of COVID-19 staging (Kendall’s tau-b =0.479, p= 0.004) with reflected moderate positive correlation. Multivariate analysis was performed for association of COVID- 19 severity with elevated troponin separately after adjusting for other known confounding factors. Independent association between COVID-19 severity and troponin remained significant after that along with other acute phase reactants and inflammatory markers.
Conclusion: COVID-19 can significantly leads to myocardial injury. This data suggested elevated troponin level is one of the determinants of clinical outcome in patients with COVID-19.
University Heart Journal 2022; 18(1): 29-35
A New Method Based on the von Mises-Fisher Distribution Shows that a Minority of Liver-Localized CD8 T Cells Display Hard-To-Detect Attraction to Plasmodium-Infected Hepatocytes
Authors: Zenkov Viktor S. , O’Connor James H. , Cockburn Ian A. , Ganusov Vitaly V. 
Published: January 2022

Malaria is a disease caused byPlasmodiumparasites, resulting in over 200 million infections and 400,000 deaths every year. A critical step of malaria infection is when sporozoites, injected by mosquitoes, travel to the liver and form liver stages. Malaria vaccine candidates which induce large numbers of malaria-specific CD8 T cells in mice are able to eliminate all liver stages, preventing fulminant malaria. However, how CD8 T cells find all parasites in 48 h of the liver stage lifespan is not well understood. Using intravital microscopy of murine livers, we generated unique data on T cell search for malaria liver stages within a few hours after infection. To detect attraction of T cells to an infection site, we used the von Mises-Fisher distribution in 3D, similar to the 2D von Mises distribution previously used in ecology. Our results suggest that the vast majority (70–95%) of malaria-specific and non-specific liver-localized CD8 T cells did not display attraction towards the infection site, suggesting that the search for malaria liver stages occurs randomly. However, a small fraction (15–20%) displayed weak but detectable attraction towards parasites which already had been surrounded by several T cells. We found that speeds and turning angles correlated with attraction, suggesting that understanding mechanisms that determine the speed of T cell movement in the liver may improve the efficacy of future T cell-based vaccines. Stochastic simulations suggest that a small movement bias towards the parasite dramatically reduces the number of CD8 T cells needed to eliminate all malaria liver stages, but to detect such attraction by individual cells requires data from long imaging experiments which are not currently feasible. Importantly, as far as we know this is the first demonstration of how activated/memory CD8 T cells might search for the pathogen in nonlymphoid tissues a few hours after infection. We have also established a framework for how attraction of individual T cells towards a location in 3D can be rigorously evaluated.
A Ferroptosis-Related Gene Prognostic Index to Predict Temozolomide Sensitivity and Immune Checkpoint Inhibitor Response for Glioma
Authors: Cai Yonghua , Liang Xianqiu , Zhan Zhengming , Zeng Yu , Lin Jie , Xu Anqi , Xue Shuaishuai , Xu Wei , Chai Peng , Mao Yangqi , Song Zibin , Han Lei , Xiao Jianqi , Song Ye , Zhang Xian 
Published: January 2022

Background: Gliomas are highly lethal brain tumors. Despite multimodality therapy with surgery, radiotherapy, chemotherapy, and immunotherapy, glioma prognosis remains poor. Ferroptosis is a crucial tumor suppressor mechanism that has been proven to be effective in anticancer therapy. However, the implications of ferroptosis on the clinical prognosis, chemotherapy, and immune checkpoint inhibitor (ICI) therapy for patients with glioma still need elucidation.Methods: Consensus clustering revealed two distinct ferroptosis-related subtypes based on the Cancer Genome Atlas (TCGA) glioma dataset (n = 663). Subsequently, the ferroptosis-related gene prognostic index (FRGPI) was constructed by weighted gene co-expression network analysis (WGCNA) and “stepAIC” algorithms and validated with the Chinese Glioma Genome Atlas (CGGA) dataset (n = 404). Subsequently, the correlation among clinical, molecular, and immune features and FRGPI was analyzed. Next, the temozolomide sensitivity and ICI response for glioma were predicted using the “pRRophetic” and “TIDE” algorithms, respectively. Finally, candidate small molecular drugs were defined using the connectivity map database based on FRGPI.Results: The FRGPI was established based on the HMOX1, TFRC, JUN, and SOCS1 genes. The distribution of FRGPI varied significantly among the different ferroptosis-related subtypes. Patients with high FRGPI had a worse overall prognosis than patients with low FRGPI, consistent with the results in the CGGA dataset. The final results showed that high FRGPI was characterized by more aggressive phenotypes, high PD-L1 expression, high tumor mutational burden score, and enhanced temozolomide sensitivity; low FRGPI was associated with less aggressive phenotypes, high microsatellite instability score, and stronger response to immune checkpoint blockade. In addition, the infiltration of memory resting CD4+ T cells, regulatory T cells, M1 macrophages, M2 macrophages, and neutrophils was positively correlated with FRGPI. In contrast, plasma B cells and naïve CD4+ T cells were negatively correlated. A total of 15 potential small molecule compounds (such as depactin, physostigmine, and phenacetin) were identified.Conclusion: FRGPI is a promising gene panel for predicting the prognosis, immune characteristics, temozolomide sensitivity, and ICI response in patients with glioma.
Association Between Trypanosoma cruzi DNA in Peripheral Blood and Chronic Chagasic Cardiomyopathy: A Systematic Review
Authors: Bosch-Nicolau Pau , Espinosa-Pereiro Juan , Salvador Fernando , Sánchez-Montalvá Adrián , Molina Israel 
Published: January 2022

Chronic chagasic cardiomyopathy (CCC) is the most important complication of patients with Chagas disease (CD). The role of persistent detection of DNA in peripheral blood and its association to CCC is unknown. We performed a systematic review up to July 2021, including studies that reported ratios of CCC and PCR positivity among non-treated adult patients. We identified 749 records and selected 12 for inclusion corresponding to 1,686 patients. Eight studies were performed in endemic countries and 4 in non-endemic countries. Only two studies showed an association between CCC and Trypanosoma cruzi parasitemia by means of PCR detection. Six studies reported greater positive PCR ratios among patients with CCC than in the patients with indeterminate chagas disease (ICD) with no statistical significance. A significant risk of bias has been detected among most of the studies. Therefore, while we performed a meta-analysis, wide inter-study heterogeneity impeded its interpretation.ConclusionsWith the available information, we could not establish a correlation between PCR-detectable parasitemia and CCC.Systematic Review Registration:https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020216072, identifier: CRD42020216072.