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The purpose of this research was described to gain comprehensive insight into Project Based Learning (PjBL) in science learning and find out the research topics that are being researched a lot at the moment. This research was carried out through bibliometric analysis using Scopus data sources, a total of 182 documents were obtained in the period 1994-2022. VOSviewer is used as a tool to image keywords, and the final research area in PjBL. The research results show that so far the number of publications regarding PjBL in science learning has fluctuated. The United States stands out as the leading country in terms of publication volume, with significant contributions from its authors and research institutions. An analysis of keywords indicates that, in the past two years, research on Project Based Learning has predominantly focused on topics such as physics, steam, integration, research methods, and junior high school education. This suggested bibliometric analysis offers valuable insights into the primary topics explored in the realm of Project Based Learning (PjBL) within the context of Science Learning.

Despite the extensive research conducted on the antimony borate glasses, further investigation is required to explore their structural characteristics when Sb2O3 replaces B2O3 in the presence of rare-earth metal oxide. Herein, the structure and properties of xSb2O3·(99-x)B2O3·1Tb4O7 (30 ≤ x ≤ 70 mol%) were investigated. The infrared (IR) spectra exhibited that there is a remarkable increase in the relative area of the absorption 800–1200 cm−1 region. This is associated with nearly constant density values, despite the heavier Sb2O3 replacing the lighter B2O3. While the molar volume is decreased with the Sb2O3 content, the oxygen packing density is decreased. These findings are related to the structural units belonging to Sb2O3. The type of these units depends on the oxidation of Sb3+ into Sb5+ through the supply of oxygen atoms from the surroundings at high melting temperatures. While Sb3+ acts as a glass network former ion through the formation of [SbO3E] and/or [SbO4E−] (where E is the 5s2 lone-pair of electrons), Sb5+ acts as a modifier ion to convert [SbO3E] into [SbO4E−] units through the formation of [SbO6], similarly to the conversion of [BO3] into [BO4̅] in B2O3 glasses. These structural units are likely contributing to the FTIR absorption 800–1200 cm−1 region, such that its relative area is considered to be the sum of the four-coordinated B atoms [BO4−] (N4) and four-coordinated Sb atoms [SbO4E−] (Sb4). These negative units compensate for the positive terbium ions (Tb3+), thus generating single-doped green phosphor for light-emitting-diode (LED) applications. [ABSTRACT FROM AUTHOR]

From the useless municipal solid waste (MSW) ashes, CeO2, Gd2O3 and CeO2 + Gd2O3 doped borosilicate glasses were organized via melting-quenching procedure. Various optical, structural, physical and radiation shielding parameters were examined towards the influence of 100 kGy of γ-radiation. UV–visible NIR spectra revealed UV peaks at 351, 348 and 370 nm corresponding to the trivalent states of Ce3+ and Gd3+ ions, while, photoluminescence (PL) spectra displayed asymmetric broad excitations of Ce3+ and Gd3+ ions due to 4f → 5d transitions, and emission intense bands at 412, 434, and 417 nm. CIE chromaticity shows that Gd3+ ions increase the luminescence of Ce3+. FTIR absorption bands revealed an overlapping between tetrahedral groups of silicate (SiO4), with trigonal (BO3) and tetrahedral (BO4) units of borate. The influence of 100 kGy obtains quite reduction in UV–visible NIR and PL peaks, large stability in FTIR and ESR spectra, and stability of thermal expansion coefficient (CTE) as well. The whole data revealed optical, structural and physical stability of glasses after irradiation besides an enhancement in microhardness owing to more structural compactness and high bonding connectivity. Radiation shielding parameters from Phy-X/PSD program showed higher values of mass (MAC) and linear attenuation coefficients (LAC), and effective atomic number (Zeff) in the order of; glass Ce+Gd > glass Ce > glass Gd. Ce + Gd doped glass revealed also the lowest half value layer (HVL) comparing to other shielding commercial concretes. The study recommends the beneficial and economical use of the useless MSW ash to produce CeO2 and/or Gd2O3 borosilicate glasses with hopeful radiation shielding features. [ABSTRACT FROM AUTHOR]

Copyright of Jurnal Kependidikan is the property of UIN Saizu Purwokerto and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The melt-quenching method was used to manufacture newly synthesized glasses with a nominal composition of 60B2O3 – 20CaO – 15ZnO – 5Li2O – xEu2O3: 0 (Eu-0.0) ≤ x ≤ 0.5 (Eu-0.5) mol%. The structural, physical, FTIR, UV–visible spectra, and mechanical properties of the synthesized Eu-x glasses are examined. XRD results verified the amorphous condition of proposed glasses. The density (ρ) of the prepared glasses increased from 3.231 to 3.338 g cm−3, but in contrast, the molar volume (VM) decreased from 20.643 to 20.506 cm3 mol−1 with increasing Eu3+ ions. FTIR spectroscopy illustrated absorbance peaks appear around 393 and 464 nm, which indicates the presence of electronic states in the wide band gap of glass matrix. These peaks are attributed to the 5L6 and 5D2 electronic states of Eu3+ ions. UV–visible measurements showed an improvement in optical absorbance and a decrease in optical energy gap. The Eu3+ ions mol% doping into the proposed glasses results in generating photoluminescence glasses, which is attributed to the 5D0 → 7F1, 5D0 → 7F2, 5D0 → 7F3, and 5D0 → 7F4 electronic transitions of Eu3+ ions. Thus, the emission spectra due to the 393 nm excitation results in the appearance of emission peaks at 593 (orange), 617 (strong red), 653 (red), and 698 (red) nm. The Poisson's ratio (σ) of Eu-x glasses is decreased from 0.3927 to 0.3903 as the molar fraction of Eu3+ ions is increased from 0.0 to 0.5 mol%. The thermodynamic properties of the glassy network are hidden in the Gibbs free energy (G) which started at 33.56 and ended at 33.72 kJ.cm−3 at low and high Eu3+ ions content mol%. Furthermore, all elastic moduli increased linearly with molar increment of Eu3+ ions in the molecular structure of the proposed glassy network. [ABSTRACT FROM AUTHOR]

Copyright of Jurnal Kependidikan is the property of UIN Saizu Purwokerto and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Jurnal Kependidikan is the property of UIN Saizu Purwokerto and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Inclusive-based Islamic religious education is an innovative and strategic approach to preventing religious radicalism. Inclusive Islamic religious education is also a form of Islamic education reform that emphasizes anti-discrimination, tolerance and mutual respect. This study aims to determine inclusive-based Islamic religious education in preventing religious radicalism in Indonesia. A qualitative method with the type of library research, examines a variety of related data, originating from the main data sources as well as supporting data sources that have a direct link with the research. The data obtained were then analyzed by conducting content analysis. The results of this study are in the form of findings relating to the implementation of inclusive-based Islamic religious education in preventing religious radicalism, namely it is found that (a) the goals of religious education are ideological-absolutistic or oriented towards pluralist-inclusive (b) the curriculum of religious education is more oriented towards rigid laws and exclusive into a loveoriented curriculum that is inclusive (c) normative-textual material becomes normative-contextual (d) exclusive-doctrinaire educators become inclusive-moderate educators (tawasuth). (e) The textualistscriptura list learning strategy becomes an objective-positive approaches. [ABSTRACT FROM AUTHOR]