Chemo-Entrepreneurship (CEP) Essentials: Practical Videos on Functional Group Material via YouTube

Entrepreneurship is crucial for students to navigate intense competition in the globalized era. Chemo-entrepreneurship (CEP) integrates chemistry education with the production of marketable products, which can serve as practical videos to illustrate the application and relevance of functional group materials in daily life, making chemistry learning more impactful when applied practically. This research aims to develop YouTube content in the form of practical videos on functional group material containing chemo-entrepreneurship. The method used in this research is research and development (R&D) with a define, design, develop, and disseminate (4-D) model. The products developed are assessed by material, media, and educational practitioner experts using product quality assessment sheets and student responses. The percentage of assessments from material, media experts, and reviewers are 87, 96, and 91%, respectively. Students responded positively to the practical video that was developed and obtained a percentage of 97%. Assessments from experts, reviewers, and students are in the very good category. Based on the data obtained, the practical video developed is suitable for use as an alternative media in practical learning of functional group material to improve students' entrepreneurial spirit

Characterisation Of The Alkaline Peroxide Pulps From The Oil Palm Empty Fruit Bunch And Their Potential For Cellulose Acetate Production

The first phase of this study involved the making and analyses of hand sheet made from the fibers of the oil palm empty fruit bunches via the process called the alkaline peroxide pulping (APP). This was followed by a two-stage paper recycling process Eight sets of hand sheets were made from the fibers extracted from the varying EFb-alkaline peroxide (AP) reaction duration The pulp and fines from the process were studied and the possibility of incorporating the fines in paper was also assessed. It is noteworthy that the fines collected as materials retained on the 400-mesh screen (R400) could improve hand sheet tensile strength by 100%. Recycling of this pulp, however, showed a declining mechanical properties of hand sheets. This is attributable to fibre hornification and weak inter-fibre bonding as a consequence of re-wetting and repeated disintegration of the hand sheets. Owing to the lost papermaking capacity, pulp purification was therefore attempted to upgrade the pulp to become raw material for cellulose acetate (CA) production. As a result of totally chlorine-free bleaching (TCF) purification of the alkaline peroxide pulp by oxygen-ozone-peroxide (OZP) sequence, CA powders and films show the smoothest oxygen-ozone-peroxide cellulose acetate (OZPCA) film surface produced by incorporation of plasticiser. With or without plasticiser, the produced CAs show thermal characteristics that are similar to those of the commercial CA

Application of Audiolingual Method in Active Arabic Language Learning for Visually Impaired Students

This study investigates the effectiveness of the Audiolingual Method in teaching Arabic to visually impaired students at Tahfidz Sam'an Boarding School in Darussudur Cimenyan, Bandung. The method, focusing on listening and speaking skills, is adapted to suit the unique needs of visually impaired learners. Using a qualitative approach with participant observations and interviews, the researchers assess the impact on students' language proficiency. Preliminary findings suggest positive outcomes, enhancing engagement, fostering inclusivity, and promoting a more interactive Arabic language learning environment. The study also incorporates teachers' perspectives, offering valuable insights for adapting language teaching methods to cater to the specific requirements of visually impaired students, ultimately contributing to effective Arabic language education in Islamic boarding schools

The effectiveness of diphenyltin (IV) and triphenyltin (IV) alkylphenyldithiocarbamate compounds as insecticide against aedes aegypti LINN. (Diptera: Culicidae) in laboratory

The development of using insecticide of organotin(IV) compound against Aedes aegypti mosquitoes have been explored and test the effectiveness of compound to prevent resistance insecticide. The aim of this research was to examine the insecticidal effect which is larvisidal and adulticidal effect two series of diphenyltin(IV) and triphenyltin(IV) alkylphenyldithiocarbamate compounds against Ae. aegypti in laboratory. Four compounds which diphenyltin(IV) ethylphenylditiocarbamate (DFEF), triphenyltin(IV) ethylphenylditiocarbamate (TFEF), diphenyltin(IV) butylphenylditiocarbamate (DFBF) and triphenyltin(IV) butylphenylditiocarbamate(DFBF) were carried out larvicidal bioassay testing against third instar larvae of Aedes aegypti. Based on activity of larvicidal testing, further study was continued to compound WHO showed the best activity larvicidal to test adulticide effect against female mosquito adults of Aedes aegypti. The results showed that TFEF compound showed the best larvicidal effect with LC50 and LC90 values of 0.082 ppm and 0.184 ppm, respectively. Therefore, TFBF compound showed a good larvicide effect with LC50 and LC90 values of 0.108 ppm and 0.273 ppm respectively. However, both of two compounds DFEF and DFBF were not a good of larvicide effect. Based on adultisial testing, TFEF compound not showed good activity of adulticidal effect with high LC50 and LC90 values which is 31,556.03 ppm and 98,427.05 ppm respectively. TFEF compound not show the good adulticide effect but it has potential to develop as larvicide. In conclusion, further study was needed to elucidate and ensure this compound will be used safely as larvicide

PERBANDINGAN KINERJA REKSA DANA SYARI’AH DAN REKSA DANA KONVENSIONAL YANG TERCATAT DI IPOT FUND PERIODE 2018-2020

Abstract : This research aims to analyze the performance comparison between conventional mutual funds and shariah mutual funds listed in Ipot fund periods 2018-2020. Variables that are used in this research are mutual funds net asset value and Sharpe ratio. By using purposive sampling method there are 69 conventional equity funds, 14 sharia equity funds, 39 conventional fix income and 7 sharia fix income. This research used the difference the average yield of mutual funds to analyze performance between conventional and sharia mutual fund. The result showed that the average conventional and sharia mutual funds do not have significantly different performance. The sharpe ratio average value showed that sharia mutual funds have higher return than conventional mutual funds.   Keywords :  Mutual Funds Performance, Net asset value, Sharpe and Ipot Fund.   Abstrak : Penelitian ini bertujuan untuk menganalisis perbandingan kinerja reksa dana konvensional dengan reksa dana syariah yang terdaftar di Ipot fund periode 2018-2020. Variabel yang digunakan dalam penelitian ini adalah nilai aktiva bersih reksa dana dan rasio Sharpe. Dengan menggunakan metode purposive sampling terdapat 69 reksa dana saham konvensional, 14 reksa dana saham syariah, 39 pendapatan tetap konvensional dan 7 pendapatan tetap syariah. Penelitian ini menggunakan perbedaan rata-rata yield reksa dana untuk menganalisis kinerja reksa dana konvensional dan syariah. Hasil penelitian menunjukkan bahwa rata-rata reksa dana konvensional dan syariah tidak memiliki perbedaan kinerja yang signifikan. Nilai rata-rata sharpe ratio menunjukkan bahwa reksa dana syariah memiliki return yang lebih tinggi dibandingkan reksa dana konvensional.   Kata Kunci : Kinerja Reksa Dana, Nilai Aktiva Bersih, Sharpe dan Ipot Fund. &nbsp

[N-Benzyl-N-(2-phenylethyl)dithiocarbamato-κ2S,S′]triphenyltin(IV) and [bis(2-methoxyethyl)dithiocarbamato-κ2S,S′]triphenyltin(IV): crystal structures and Hirshfeld surface analysis

The crystal and molecular structures of two triphenyltin dithiocarbamates, [Sn(C6H5)3(C16H16NS2)], (I), and [Sn(C6H5)3(C7H14NO2S2)], (II), are described. In (I), the dithiocarbamate ligand coordinates the SnIV atom in an asymmetric manner, leading to a highly distorted trigonal–bipyramidal coordination geometry defined by a C3S2 donor set with the weakly bound S atom approximately trans to one of the ipso-C atoms. A similar structure is found in (II), but the dithiocarbamate ligand coordinates in an even more asymmetric fashion. The packing in (I) features supramolecular chains along the c axis sustained by C—H...π interactions; chains pack with no directional interactions between them. In (II), supramolecular layers are formed, similarly sustained by C—H...π interactions; these stack along the b axis. An analysis of the Hirshfeld surfaces for (I) and (II) confirms the presence of the C—H...π interactions but also reveals the overall dominance of H...H contacts in the respective crystals

Crystal structures and Hirshfeld surface analyses of bis[N,N-bis(2-methoxyethyl)dithiocarbamato-κ2 S,S′]di-n-butyltin(IV) and [N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2 S,S′]triphenyltin(IV)

The crystal and molecular structures of the two title organotin dithiocarbamate compounds, [Sn(C4H9)2(C7H14NO2S2)2], (I), and [Sn(C6H5)3(C5H10NOS2)], (II), are described. Both structures feature asymmetrically bound dithiocarbamate ligands leading to a skew-trapezoidal bipyramidal geometry for the metal atom in (I) and a distorted tetrahedral geometry in (II). The complete molecule of (I) is generated by a crystallographic twofold axis (Sn site symmetry 2). In the crystal of (I), molecules self-assemble into a supramolecular array parallel to (101) via methylene-C—H...O(methoxy) interactions. In the crystal of (II), supramolecular dimers are formed via pairs of weak phenyl-C—H...π(phenyl) contacts. In each of (I) and (II), the specified assemblies connect into a threedimensional architecture without directional interactions between them. Hirshfeld surface analyses confirm the importance of H...H contacts in the molecular packing of each of (I) and (II), and in the case of (I), highlight the importance of short methoxy-H...H(butyl) contacts between layers

Crystal structures and Hirshfeld surface analyses of (N-hexyl-N-methyldithiocarbamato-κ2 S,S′)triphenyltin(IV) and [N-methyl-N-(2-phenylethyl)dithiocarbamato-κ2 S,S′]triphenyltin(IV)

The crystal and molecular structures of two triphenyltin dithiocarbamate compounds, viz. [Sn(C6H5)3(C8H16NS2)], (I), and [Sn(C6H5)3(C10H12NS2)], (II), are described. The dithiocarbamate ligand in each molecule coordinates in an asymmetric fashion resulting in heavily distorted tetrahedral C3S coordination geometries for the Sn atoms, with the distortions traced to the close approach of the non-coordinating thione-S atom. The molecular packing in both compounds features C—H....Sn-phenyl) interactions. In (I), the donors are Sn-phenylC—H groups leading to centrosymmetric aggregates, while in (II), the donors are both Sn-phenyl-C—H and methyl-C—H groups leading to supramolecular chains propagating along the b axis. The identified aggregates assemble into their respective crystals with no directional interactions between them. An analysis of the Hirshfeld surfaces show distinctive patterns, but an overwhelming predominance (>99% in each case) of H...H, C...H/H...C and S...H/H...S contacts on the respective Hirshfeld surface

Di-n-butylbis[N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2S,S′]tin(IV): crystal structure and Hirshfeld surface analysis

The complete molecule of the title compound, [Sn(C4H9)2(C5H10NOS2)2], is generated by a crystallographic mirror plane, with the SnIV atom and the two inner methylene C atoms of the butyl ligands lying on the mirror plane; statistical disorder is noted in the two terminal ethyl groups, which deviate from mirror symmetry. The dithiocarbamate ligand coordinates to the metal atom in an asymmetric mode with the resulting C2S4 donor set defining a skew trapezoidal bipyramidal geometry; the n-butyl groups are disposed to lie over the longer Sn—S bonds. Supramolecular chains aligned along the a-axis direction and sustained by methylene-C—H...S(weakly coordinating) interactions feature in the molecular packing. A Hirshfeld surface analysis reveals the dominance of H...H contacts in the crystal