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Determination of CaCO3 Content in Egg Shell Risani Rusnel, Azizah; Putri Karim, Dinda; Marlini, Rahmida; Maharani, Siska
Journal of Global Research Education Vol. 2 No. 2 (2025)
Publisher : Akademi Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62194/4y5hr711

Abstract

The complexometry titration investigation has been conducting to ascertain the CaCO3 concentration of  Egg. The complex substance EDTA will hold the calcium, and the point will be signaled by a change in the metallochromic indicator's color. Standardization EDTA : Pipette 25 mL of MgSO4.7H2O solution, 10 mL of buffer solution pH 10, a little amount of  EBT indicator, and aqua DM into the titration flask. When you titrate with EDTA solution, the solution turns blue. Data processing has revealed that eggshell contains 0,025 grams of calcium and that the calcium content is 14,1%. Theoretically, eggshell is made up of crystals of CaCO3 (98,43%) based on the current mineral composition. Ca3(PO4)2 (0.75%) and MgCO3 (0.84%). Calcium carbonate is the main component of eggshell. When the titrant and titrate interact to create a complex molecule, the titration is known as a complexometric titration. A solution containing Ca2+ will form a complex with EDTA, according to the fundamental tenet of complexometry. CaCO3 was present in the sample (duck eggshell) in an amount of 0.025 grams, and a CaCO3 value of 15.7% was determined.
Social Media: A Bibliometric Analysis Maharani, Siska; Lutpiani, Anisa; Setiawan, Adi
International Journal of Engineering, Science and Information Technology Vol 5, No 2 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i2.880

Abstract

This research discusses the development and role of social media in modern life, especially Within digital marketing and consumer behavior. Social media, defined as internet-based platforms that enable user creation and exchange of content, has experienced a rise from 2003 to 2013, with significant influence on communication, social interaction, and business strategy. The method used in this study is bibliometric analysis with VOSviewer software, which maps data from scholarly articles published in leading journals such as Elsevier, Emerald, Springer, Willey, Sagepub, and Taylor. Data was collected using Publish or Perish software with specific keywords related to social media, digital marketing, and consumer behavior. From the bibliometric analysis, 1,550 articles with 4,961 keywords were found and analyzed using co-occurrence and co-authorship methods, resulting in 111 specific keywords divided into 11 clusters. The study revealed the importance of social media in building customer-business relationships, the influence of the power of social ties on consumer behavior, and the role of social media in developing effective marketing strategies. The research also identifies author collaborations in social media-related studies and shows how research trends and patterns evolve. The findings provide deep insights into the use of social media in modern marketing strategies. They can form the basis for further research development in management, business, and digital marketing. The findings of this study offer valuable contributions to the academic and professional understanding of social media. They serve as a foundational reference for future research aiming to explore the strategic applications of social media in business, the psychology of online consumer engagement, and the technological advancements that continue to reshape digital communications. The study also provides insights into the evolution of research patterns, visualizing how scholarly focus has shifted from early platforms like MySpace and Flickr to contemporary and emerging platforms such as YouTube, TikTok, and Instagram. Using overlay visualization and keyword density maps, the research identifies recent trends and research gaps, highlighting areas that require further academic exploration. For instance, the dominance of "YouTube" in recent literature indicates a growing interest in multimedia marketing, influencer culture, and community-driven content. At the same time, some topics, such as mobile-integrated social platforms, remain underexplored.
STRATEGI PENGEMBANGAN OBJEK WISATA SARASAH TANGKHUGAN DI NAGARI SALAREH AIA KECAMATAN PALEMBAYAN KABUPATEN AGAM Maharani, Siska; Rahmanelli, Rahmanelli
JURNAL BUANA Vol 8 No 2 (2024)
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana/vol8-iss2/3594

Abstract

This study aims to determine the development strategy for the Sarasah Tangkhugan waterfall tourist attraction in Nagari Salareh Aia, Palebayan District, Agam Regency. This type of research is descriptive qualitative. The informants in this study were Wali Nagari Palembayan and visitors. Data collection techniques in this study are observation, interviews, and documentation. The data analysis technique in this study uses the SWOT analysis method. This tourism object has the potential to develop because its beauty and panorama can attract tourists. The results of the research on the development strategy for the Sarasah Tangkhugan waterfall tourism object in Nagari Salareh Aia, Palembayan District, Agam Regency, it can be concluded that the local party needs to add facilities around the tourist attraction, pave unpaved roads, and make entrance gates so that it becomes a better tourist attraction for visiting tourists. Keywords: Development strategy, Tourist attraction, Sarasah Tangkhugan
Aplikasi Penggunaan Resin Silika Gel-GPTMS Termodifikasi Dimetilamina untuk Analisis Ion Klorida (Cl⁻) secara Kromatografi Ion Maharani, Siska; Oktavia, Budhi
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7568

Abstract

The limited use of silica gel as an ion-exchange resin in ion chromatography columns forms the background of this study, despite its high potential as a stationary phase. This research aims to apply glycidoxypropyltrimethoxysilane–dimethylamine (GPTMS–DMA) modified silica gel as an ion-exchange resin in ion chromatography for the analysis of chloride ions (Cl⁻). A quantitative method was employed, using chloride ion concentrations of 100 ppm, 200 ppm, and 300 ppm. The analysis was conducted using High Performance Liquid Chromatography (HPLC) with a column packed with GPTMS–DMA silica gel and a mixed eluent of Na₂CO₃ and NaHCO₃ at concentrations of 0.1 M, 0.05 M, and 0.01 M. The results showed that 0.1 M Na₂CO₃ produced the most optimal chromatogram peaks, with a regression equation of y = 0.0004x and a determination coefficient R² = 0.9733, indicating high linearity. The study concludes that GPTMS–DMA modified silica gel is effective as a stationary phase for chloride ion analysis via ion chromatography and holds strong potential for further development as an ion-exchange resin in broader chemical analysis applications.
Pengaruh Media Scrapbook Terhadap Hasil Belajar IPAS Siswa Kelas V Sekolah Dasar Maharani, Siska; Erdiana, Lita; Wulan, Budhi Rahayu Sri
JPPSD: Jurnal Pendidikan dan Pembelajaran Sekolah Dasar Vol 5, No 2 (2025): Oktober
Publisher : Universtas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jppsd.v5i2.76144

Abstract

Penelitian ini berlatar belakang pemanfaatan dukungan media guna mendidik agar dapat membangun motivasi belajar siswa. penelitian ini bermaksud untuk melihat dampak penggunaan media scrapbook atas hasil belajar IPAS siswa kelas V sekolah dasar. Pendekatan dalam penelitian ini memanfaatkan pendekatan kuantitatif dengan metode penelitian kuasi eksperimen. Sampel penelitian terdiri dari 60 siswa yang kemudian dibagi menjadi dua kelas dengan setiap kelas berisikan 30 siswa. Pengumpulan data yang manfaatkan yaitu teknik tes dan angket. Nilai hasil belajar IPAS pre-test kelas eksperimen yaitu 68,7 dan nilai post-test yaitu 86,7 meningkat sebanyak 18%. pada kelas kontrol nilai hasil pre-test siswa yaitu 68,5 dan nilai post-test 83,5. Hasil belajar IPAS diukur mengenakan uji t membuktikan nilai t hitung 2,132 dan t-tabel 1,701 yang artinya Ho ditolak dan Ha diterima, sedangkan penggunaan media scrapbook terhadap hasil angket respon siswa menunjukkan hasil yang positif dengan presentase keseluruhan mencapai 93% yang ada pada taraf “sangat baik”. Sehingga menunjukkan hasil belajar kelas eksperimen lebih tinggi dari pada kelas kontrol dan media scrapbook memberikan dampak atas meningkatnya hasil belajar IPAS siswa kelas V sekolah dasar, serta mendapatkan respon siswa yang sangat baik dengan nilai sekor mencapai 93% This research is based on the use of media support to educate and build student motivation to learn. This research aims to examine the impact of using scrapbook media on the IPAS learning outcomes of fifth-grade elementary school students. This research uses a quantitative approach with a quasi-experimental research method. The research sample consisted of 60 students, who were then divided into two classes, each containing 30 students. Data collection utilized test and questionnaire techniques. The pretest IPAS learning outcomes for the experimental class were 68.7, and the posttest scores were 86.7, an increase of 18%. In the control class, the pre-test scores were 68.5, and the post-test scores were 83.5. The IPAS learning outcomes were measured using a t-test, which yielded a calculated t-value of 2.132 and a table t-value of 1.701, meaning that the null hypothesis (Ho) was rejected and the alternative hypothesis (Ha) was accepted. Meanwhile, the use of scrapbook media on student questionnaire responses showed positive results, with an overall percentage of 93% at the “very good” level. Thus, the learning outcomes of the experimental class were higher than those of the control class, and the scrapbook medium had a positive impact on improving IPAS learning outcomes for fifth-grade elementary school students, as well as receiving very good student responses with a score of 93%.