bluuebunny/crossref_metadata_2025_split huggingface dataset:
Voluntariado - A ciência da solidariedade: Relatos de experiências por estudantes de medicina sobre trabalhos voluntários no Paraguai e no Brasil
Authors: Martins Clara Barbosa , Almeida Diedra Sanielle Barros de Sá , Bonomo Andressa Amaral , Moreira Débora Nunes Teixeira , Oliveira Natalia de , Santos Karina Fernandes dos , Santos Katia Roberta dos , Ramos Jackelyne Grasyelle Filho , Lacerda Fabrício Azzi , Silva Sergio Rodrigo Becker Quadros da , Becker Camila Cristina Steinmetz , Costa Mariana Wehbe , Miranda Marília , Bertoli João Guilherme Braganholo , Rebelato Jaqueline Fernanda , Silva Jéssica Carina Pimentel da , Sampaio Rebeca Santos , Colla Maria Manoela , Mattei Bruna Boehm , Cruz Renata Iana Elias , Araújo Luana Sula Sousa dos Reis , Gomes Marcos Vinícius de Sousa 
Published: September 2024

Durante os anos de graduação em medicina, um grupo de estudantes realizou diversas ações de voluntariado com objetivo de desenvolverem e expressarem: solidariedade, humanização e empatia. As atividades ocorreram no Paraguai e no Brasil em diferentes contextos: lares de idosos, abrigos de crianças com HIV e/ou em situações de vulnerabilidade social, albergues e comunidades terapêuticas. Esse artigo trata-se de um relato de experiências. Por meio das diversas impressões de diferentes estudantes, o leitor poderá refletir sobre o sentido da vida e seu propósito. Trata-se de um convite a fazermos do mundo um lugar melhor, depositando nele, gotas de amor. Te convidamos a pensar no senso de humanidade e, por conseguinte a perceber os impactos na saúde mental e física, que os trabalhos voluntários podem proporcionar a quem executa e também recebe as ações.
PENINGKATAN HASIL BELAJAR ILMU PENGETAHUAN ALAM MATERI PESAWAT SEDERHANA MELALUI METODE GROUP INVESTIGATION DENGAN BANTUAN MEDIA NYATA PADA SISWA KELAS V SEMESTER II SDN V ARJASA
Authors: Mory Victor Febrianto  , Ratih Kesuma Dewi  
Published: September 2024

Penelitian ini merupakan penelitian tindakan kelas yang bertujuan untuk meningkatkan hasil belajar siswa dengan menerapkan metode Group Investigation dengan bantuan media nyata pada mata pelajaran IPA materi Pesawat Sederhana untuk siswa kelas V semester II di SDN V Arjasa tahun pelajaran 2023/2024. Siswa kelas V di SDN V Arjasa berjumlah 9 orang. Terdiri dari 4 siswa laki-laki dan 5 siswa perempuan. Instrumen yang digunakan dalam penelitian ini adalah silabus, RPP, dan Lembar Kerja Siswa. Data-data yang diperlukan dalam penelitian tindakan kelas ini diperoleh melalui proses wawancara dengan guru wali kelas V mengenai proses belajar siswa selama ini. Bagaimana mengajak siswa untuk mampu aktif dan kreatif saat proses belajar mengajar berlangsung. Data juga diperoleh melalui hasil observasi penerapan metode Group Investigation dan tes formatif khusus mata pelajaran IPA materi Pesawat Sederhana untuk siswa-siswi kelas V di SDN V Arjasa Kecamatan Arjasa Kabupaten Situbondo. Data penunjang lainnya yaitu catatan lapangan serta foto kegiatan yang sedang dilaksanakan. Penelitian ini menggunakan Penelitian Tindakan Kelas sebanyak 2 siklus. Siklus I terdiri dari tahap identifikasi masalah, perencanaan, tindakan, observasi, dan refleksi. Siklus II terdiri dari tahap perencanaan, tindakan, observasi, dan refleksi. Hasil penelitian menunjukkan bahwa hasil belajar siswa kelas V di SDN V Arjasa pada mata pelajaran IPA materi Pesawat Sederhana mengalami peningkatan dan memenuhi kriteria ketuntasan minimum serta dinyatakan tuntas secara klasikal.
PENERAPAN MODEL KOOPERATIF TIPE JIGSAW UNTUK MENINGKATKAN HASIL BELAJAR MATA PELAJARAN IPA MATERI PESAWAT SEDERHANA PADA SISWA KELAS V SEMESTER II SDN 9 PATOKAN
Authors: Setia Wulandari  
Published: September 2024

Pendidikan IPA diharapkan dapat menjadi wahana bagi peserta didik untuk mempelajari diri sendiri dan alam sekitar, serta pengembangan lebih lanjut dalam menerapkannya di dalam kehidupan sehari- hari hingga menjadi manusia yang bermartabat. Pembelajaran IPA sebaiknya dilaksanakan secara inkuiri dan berbuat untuk memperoleh pemahaman yang mendalam tentang alam dan menumbuhkan kemampuan berpikir, bekerja dan bersikap ilmiah. Penelitian ini bertujuan untuk: mengetahui penerapan model Kooperatif Tipe Jigsaw untuk meningkatkan hasil belajar pada mata pelajaran Ilmu Pengetahuan Alam materi pesawat sederhana pada siswa kelas V semester II SDN 9 PATOKAN tahun ajaran 2023-2024. Penelitian ini adalah penelitian tindakan kelas yang dilaksanakan dalam dua siklus, masing-masing siklus mencakup tahap perencanaan, pelaksanaan, observasi dan refleksi. Hasil penelitian menunjukkan bahwa penerapan model Kooperatif Tipe Jigsaw untuk meningkatkan hasil belajar mata pelajaran Ilmu Pengetahuan Alam materi pesawat sederhana pada siswa kelas V semester II SDN 9 PATOKAN .
STRATEGI GURU DALAM UPAYA PENINGKATAN MORAL SISWA di MTs MIFTAHUL ULUM ARJASA KABUPATEN SITUBONDO
Authors: Risa Haidayati  , Siti Seituni  
Published: September 2024

Strategi merupakan komponen penting dan mempunyai pengaruh yang besar terhadap keberhasilan pembinaan kerena dengan adanya strategi maka suatu tujuan yang telah direncanakan akan mencapai hasil yang dinginkan, maka yang menjadi fokus kajian dalam penelitian ini adalah strategi guru dalam peningkatan moralitas siswa. Seiring berkembangnya ilmu pengetahuan teknologi, Banyak dampak yang telah dihasilkan dari perkembangan tersebut, baik itu berupa dampak positif maupun dampak negatif. Perubahan zaman ke abad 21 kini membawa setiap lapisan masyarakat pada kemajuan Ilmu Pengetahuan dan Teknologi (IPTEK). Namun, kemajuan IPTEK yang seharusnya mampu menciptakan masyarakat madani ternyata malah mengikis pentingnya nilai-nilai kesopanan, ajaran baik tentang perbuatan dan kelakuan (akhlaq) atau sering kali kita sebut sebagai moral. Maka, untuk mengatasi degradasi moral ada upaya yang harus dilakukan yaitu salah satunya dengan strategi-strategi tepat yang digunakan oleh guru dalam memperbaiki moral dan anak bangsa yang berkarakter. Dalam penelitian ini menggunakan metode kualitatif deskriptif dengan tekhnik observasi, wawancara dan dokumentasi. Dan penelitian ini menghasilkan data bahwa Strategi Guru di sekolah dalam Membina moral Siswa di MTS Miftahul Ulum yaitu dilakukan melalui metode keteladanan dengan cara memberikan keteladanan atau contoh yang baik dan mulia kepada siswa atau guru harus bisa digugu dan ditiru. Artinya guru harus bisa memberi contoh dan bisa jadi contoh yang baik bagi baik dilingkungan sekolah maupun di luar lingkungan sekolah. Adapun Strategi yang lain yaitu melalui metode nasehat dan melalui metode pembiasaan.
PEMAKAIAN BAHASA MADURA DIKALANGAN MAHASISWA UNIVERSITAS ABDURACHMAN SALEH SITUBONDO
Authors: Rosyidatul Imama  , Inna Wahida  
Published: September 2024

Artikel ini menginvestigasi pemakaian bahasa Madura oleh mahasiswa dalam komunikasi sehari-hari, entah itu dengan dosen, teman, orang tua, ataupun tetangga baik itu di dalam kampus maupun diluar kampus. Penelitian ini menggunakan pendekatan kualitatif dengan menganalisis data dari wawancara dan observasi melalui angket berupa tabel terhadap mahasiswa Universitas Abdurachman Saleh Situbondo khususnya parodi FKIP 1B tentang pemakaian bahasa Madura sesuai dengan tingkatannya. Dalam penggunaanya bahasa Madura terdiri dari 4 tingkatan antara lain: 1) “Enja’ iye”, 2) “Engghi enten”, 3) “Engghi- Bhunten”, 4) “Abdhi- dhalem/ Ajhunan Dhalem”. Dalam penelitian, diperoleh hasil rata-rata mahasiswa menggunakan bahasa Indonesia saat berkomunikasi dengan dosen dan saat pembelajaran didalam kelas dan penggunaan bahasa Madura Madura “enja’ iye” dan “engghi enten” digunakan pada saat berkomunikasi dengan teman, orang tua maupun didalam masyarakat. Bahasa "enjek iye" penggunaanya kurang sopan jika lawan bicaranya lebih tua dari kita, akan tetapi ini sudah menjadi kebiasaan, sehingga tidak begitu dipermasalahkan. Kami memberikan sebuah penguatan dan upaya mengenalkan bahasa Madura yang lebih halus untuk digunakan kembali dalam berinteraksi terhadap seseorang yang lebih tua, yakni penggunaan bahasa Madura "engghi bhunten" karena di dalam intonasi tersebut sangat elok untuk diterapkan pada saat berkomunikasi kepada yang lebih tua. Implikasi dari penelitian ini dapat memberikan wawasan untuk lebih memahami pemakaian bahasa Madura yang baik sesuai dengan tingkatannya dan pelestarian bahasa Madura agar tetap digunakan dalam berkomunikasi sehari hari karena sebagian mahasiswa belum mendukung pelestarian bahasa dan budaya lokal di lingkungan pendidikan tinggi.
A genetic investigation in five Chinese families with keratoconus
Authors: Lin Qinghong , Wang Xuejun , Peng Xiaoliao , Han Tian , Sun Ling , Zhang Xiaoyu , Zhou Xingtao 
Published: September 2024

Background
This study investigated the genetic characteristics of five Chinese families with keratoconus (KC).

Methods
In the five families affected by KC, medical records, clinical observations, and blood samples were collected from all individuals. All KC family members (n = 20) underwent both whole exome sequencing of genomic DNA and Sanger sequencing to confirm the variants. Online software was utilized to analyze all variants, and the online server I-TASSER was employed for in silico predictions of the three-dimensional protein structures of the variants. The newly discovered variants and single nucleotide polymorphisms were further examined in 322 sporadic KC patients.

Results
The Pentacam tomographic composite index in those affected first-degree family members of the probands showed a pathological change. Five new variants were detected in the five probands and other affected members in their families: a heterozygous missense variant g.19043832C>T (p.Ser145Asn) in the homer scaffolding protein 3 (HOMER3) gene; a heterozygous missense variant g.99452113G>A (p.Gly483Arg) in the insulin-like growth factor 1 receptor (IGF1R) gene; a heterozygous missense variant g.55118280G>T (p.Trp843Leu) in the echinoderm microtubule-associated protein like 6 (EML6) gene; a heterozygous frameshift variant c. 1226_1227del (p.Gln410Glufs*17) in the DOP1 leucine zipper-like protein B (DOP1B) gene; and a heterozygous splice-site variant c.7776+2T>A in the neurobeachin-like protein 2 (NBEAL2) gene. These variations were predicted to be potentially pathogenic and associated with KC.

Conclusion
Five novel variants in HOMER3, IGF1R, EML6, DOP1B, and NBEAL2 genes were identified in this study and may be associated with the pathogenesis of KC. This study provides new information about the gene variants and their protein changes in KC patients. The findings should be explored further and could potentially be applied to the early diagnosis of KC before clinical onset.
87Sr/86Sr in recent accumulations of calcium sulfate on landscapes of hyperarid settings: A bimodal altitudinal dependence for northern Chile (19.5°S–21.5°S)
Authors: Cosentino N. J. , Jordan T. E. , Derry L. A. , Morgan J. P. 
Published: November 2015

AbstractAn elevation‐dependent relationship of the 87Sr/86Sr ratio of Holocene surface accumulations of sulfate salts is demonstrated for a continental margin hyperarid setting. In the Atacama Desert of northern Chile, gypsum and anhydrite of multiple origins exist widely on superficial materials that originated during the last 10,000 years. An important source of calcium sulfate is from offshore‐generated stratocumulus clouds that are advected onto the continent, where they generate fog that transfers water droplets to the ground surface which, upon evaporation, leaves calcium sulfate crystals. Meteorological measurements of the cloud base and top altitudes average ∼400 m and ∼1100 m above sea level (masl), respectively. The seawater ratio of 87Sr/86Sr (0.70917) is distinctively higher than that reported for weathered mean Andean rock (less than 0.70750). Samples of 28 modern surface salt accumulations for locations between 200 and 2950 masl and between ∼19°30′ and ∼21°30′S verify that 87Sr/86Sr varies as a function of site altitude. Sites below 1075 masl and above 225 masl display calcium sulfate 87Sr/86Sr of mean value 0.70807 ± 0.00004, while the ratio outside this altitudinal domain is 0.70746 ± 0.00010. Thus, the 87Sr/86Sr ratio of Holocene salt accumulations differentiates two altitudinal domains.
Twenty‐two–item Sino‐Nasal Outcome Test in a control population: a cross‐sectional study and systematic review
Authors: Farhood Zachary , Schlosser Rodney J. , Pearse Madeline E. , Storck Kristina A. , Nguyen Shaun A. , Soler Zachary M. 
Published: November 2015

BackgroundThe 22‐item Sino‐Nasal Outcome Test (SNOT‐22) is a commonly utilized outcome measure for chronic rhinosinusitis (CRS). However, what constitutes a normal score remains poorly defined. The goal of this study was to evaluate SNOT‐22 scores in a control population without CRS and perform a systematic review and meta‐analysis of “normal” values.MethodsNinety‐nine subjects without CRS were enrolled, with 95 fully completing the SNOT‐22 questionnaire. Multivariable linear regression was used to determine whether demographic factors or medical comorbidities influence SNOT‐22 scores in a population without CRS. A systematic literature search was performed, identifying studies that evaluated the SNOT‐22 in a non‐CRS population and estimates for SNOT‐22 values were pooled.ResultsThirty‐six males and 59 females were included in the primary analysis with a mean age of 53.4 ± 17.3 years (range, 18–88 years). The mean SNOT‐22 score was 16.4 ± 15.2. Asthma (p = 0.003) and depression (p = 0.002) were found to be independent predictors of higher SNOT‐22 scores. Thirteen articles were identified in the literature search and 1 was provided via author correspondence, with 10 reporting sufficient data to be included in the meta‐analysis. Weighted mean SNOT‐22 score was 11 ± 9.4 (n = 1517). Our data differed significantly from published data (mean difference = 5.4; 95% confidence interval [CI], 3.4 to 7.5; p < 0.0001) likely owing to differences in comorbidities.ConclusionSNOT‐22 scores vary in non‐CRS populations depending upon the group queried. Asthma and depression are associated with higher SNOT‐22 scores and should be considered when determining what constitutes a normal value.
Silicium‐Nanokristalle und Silicium‐Polymer‐Hybridmaterialien: Synthese, Oberflächenmodifikation und Anwendungen
Authors: Dasog Mita , Kehrle Julian , Rieger Bernhard , Veinot Jonathan G. C. 
Published: November 2015

AbstractAufgrund der hohen Verfügbarkeit in der Erdkruste und seiner geringen Toxizität im Vergleich zu einigen anderen Halbleitern ist Silicium der Vorreiter in der Elektroindustrie. Daher finden Silicium‐Nanokristalle (SiNKs) insbesondere aufgrund ihrer einzigartigen optoelektronischen Eigenschaften ein hohes Interesse in der Halbleiterindustrie und sie haben das Potenzial, die toxischen Quantenpunkte (Elemente der Gruppen II–VI und III–V) zu substituieren. Dennoch erhielten SiNKs wegen ihrer geringeren Photolumineszenz(PL)‐Quantenausbeuten, einer schwierig zu erzielenden monodispersen Partikelverteilung und ihrer Oxidationsanfälligkeit nicht dieselbe Aufmerksamkeit wie ihre schwermetallhaltigen Analoga. Daher wurde vermehrt an der Funktionalisierung von SiNK‐Oberflächen geforscht und die genannten Faktoren im Wesentlichen verbessert. Vor diesem Hintergrund fassen wir in diesem Aufsatz die neuesten Entwicklungen in der Funktionalisierung von SiNK‐Oberflächen, beschriebene SiNK/Polymer‐Hybridmaterialien und deren Anwendungen in den Bereichen Sensorentwicklung, Leuchtdioden, Katalyse und Akkumulatoren zusammen.
Silicon Nanocrystals and Silicon‐Polymer Hybrids: Synthesis, Surface Engineering, and Applications
Authors: Dasog Mita , Kehrle Julian , Rieger Bernhard , Veinot Jonathan G. C. 
Published: November 2015

AbstractSilicon nanocrystals (Si‐NCs) are emerging as an attractive class of quantum dots owing to the natural abundance of silicon in the Earth's crust, their low toxicity compared to many Group II–VI and III–V based quantum dots, compatibility with the existing semiconductor industry infrastructure, and their unique optoelectronic properties. Despite these favorable qualities, Si‐NCs have not received the same attention as Group II–VI and III–V quantum dots, because of their lower emission quantum yields, difficulties associated with synthesizing monodisperse particles, and oxidative instability. Recent advancements indicate the surface chemistry of Si‐NCs plays a key role in determining many of their properties. This Review summarizes new reports related to engineering Si‐NC surfaces, synthesis of Si‐NC/polymer hybrids, and their applications in sensing, diodes, catalysis, and batteries.
Preparation and characterization of magnetic poly(styrene–glycidyl methacrylate) microspheres for highly efficient protein adsorption by two‐stage dispersion polymerization
Authors: Zhao Xinwei , Guan Yueping , Xia Changfu , Xia Tingting , Qiu Xiaolin , Wang Chuhang , Guo Chen 
Published: November 2015

ABSTRACTMicrometer‐sized superparamagnetic poly(styrene–glycidyl methacrylate)/Fe3O4 spheres were synthesized by two‐stage dispersion polymerization with modified hydrophobic Fe3O4 nanoparticles, styrene (St), and glycidyl methacrylate (GMA). The morphology and properties of the magnetic Fe3O4–P (St‐GMA) microspheres were examined by scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, thermogravimetric analysis, and attenuated total reflectance. The average size of the obtained magnetic microspheres was 1.50 μm in diameter with a narrow size distribution, and the saturation magnetization of the magnetic microspheres was 8.23 emu/g. The magnetic Fe3O4–P (St‐GMA) microspheres with immobilized iminodiacetic acid–Cu2+ groups were used to investigate the adsorption capacity and selectivity of the model proteins, bovine hemoglobin (BHb) and bovine serum albumin (BSA). We found that the adsorption capacity of BHb was as high as 190.66 mg/g of microspheres, which was 3.20 times greater than that of BSA, which was only 59.64 mg/g of microspheres as determined by high‐performance liquid chromatography. With a rather low nonspecific adsorption, these microspheres have great potential for protein separation and purification applications. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43005.
Epoxidized soybean oil‐plasticized poly(lactic acid) films performance as impacted by storage
Authors: Xing Cheng , Matuana Laurent M. 
Published: November 2015

ABSTRACTThis study examined the effect of storage time at room temperature on the melt viscosity, thermal, and tensile properties of epoxidized soybean oil plasticized poly(lactic acid) (PLA) films manufactured through a cast extrusion process. Infrared results indicate that plasticizer migration to the surface of the film occurred after only 30 days of storage, which significantly affected the performance of plasticized films. While the melt viscosity, glass transition temperature, degree of crystallinity, tensile strength, and modulus increased, the elongation at break and energy to break decreased with storage time up to 30 days and all properties remained constant thereafter. However, the ability of stored plasticized film to cold crystallize remained unaffected since both the cold crystallization temperature and melting temperature were not affected during storage. Although plasticized film lost some flexibility after only 30 days of storage due to plasticizer migration to the surface of the film, sufficient plasticization performance still remained in plasticized PLA films for flexible packaging application even after a long storage period at ambient conditions. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43201.
Precipitation trend analysis of Sindh River basin, India, from 102‐year record (1901–2002)
Authors: Gajbhiye Sarita , Meshram Chandrashekhar , Singh Sudhir Kumar , Srivastava Prashant K. , Islam Tanvir 
Published: November 2015

AbstractThe study of long‐term precipitation record is critically important for a country, whose food security and economy rely on the timely availability of water. In this study, the historical 102‐year (1901–2002) rainfall data of the Sindh River basin (SRB), India, were analyzed for seasonal and annual trends. The Mann–Kendall test and Sen's slope model were used to identify the trend and the magnitude of the change, respectively. Spatial interpolation technique such as Kriging was used for interpolating the spatial pattern over SRB in GIS environment. The analysis revealed the significantly increasing precipitation trend in both seasonal and annual rainfall in the span of 102 years.
Tyrosinase immobilized on a hydrophobic membrane
Authors: Algieri Catia , Donato Laura , Giorno Lidietta 
Published: November 2015

AbstractPolyvinylidene fluoride (PVDF) membrane surfaces were ad hoc functionalized chemically to make them suitable for enzymatic immobilization. The process was performed by grafting the membrane surface with 1,4‐diaminobutane and subsequently by activating it with glutarhaldehyde. The chemico‐physical properties of the original PVDF membrane and of the modified membranes were studied by infrared spectroscopy, scanning electron microscopy, and static contact angle measurements. The activated membranes were used as a support for covalent immobilization of tyrosinase. The activity of free and immobilized enzyme was studied and compared. The experimental data showing the specific activity of the immobilized enzyme are similar to the value obtained with the free one. This means that the immobilization procedure did not alter the catalytic properties of the tyrosinase. In addition, the surface modification of the PVDF made it a promising material to use in enzyme or biomolecule immobilization processes.
Bifunctional Ionic Liquids for the Multitask Fixation of Carbon Dioxide into Valuable Chemicals
Authors: Saptal Vitthal B. , Bhanage Bhalchandra M. 
Published: November 2015

AbstractA series of task‐specific ionic liquids (ILs) such as mono‐, dicationic, and polymer‐supported ILs were synthesized. These ILs were applied as multitasking organocatalysts for transformations of carbon dioxide into valuable chemicals through a range of reactions, including (i) cycloaddition reactions of CO2/CS2 with epoxides to form cyclic carbonates and 1,3‐oxathiolane‐2‐thiones, (ii) transesterification of cyclic carbonates with methanol to form dimethyl carbonate, and (iii) synthesis of quinazoline‐2,4(1 H,3 H)‐diones and quinazoline‐2,4(1 H,3 H)‐dithiones from 2‐aminobenzonitriles and CO2/CS2. The developed methodology is transition‐metal free, solvent free, and additive free. Remarkably, the developed ILs were recyclable in up to seven consecutive cycles; thus, making this protocol green and cost effective.
Aqueous‐Phase Amination of Biogenic Isohexides by using Ru/C as a Solid Catalyst
Authors: Pfützenreuter Rebecca , Rose Marcus 
Published: November 2015

AbstractAn aqueous phase process for the amination of biogenic isohexides with ammonia using Ru/C as solid catalyst is reported. The products possess great potential for the production of biogenic polyamides. From the diol substrates amino alcohols and diamines are derived as main products with significantly varying product selectivity depending on the substrates’ stereochemistry. The catalytic reaction is performed at temperatures of 140–180 °C. The Ru/C catalyst shows a high activity in the aqueous phase, which is beneficial for the transformation of the polar biogenic substrates. Despite the basic conditions, the metal leaching is negligible and the catalyst can be recycled easily in batch operation and, thus, enables further process development thanks to the mild and scalable reaction conditions.