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Rancangan G-Optimal pada Peningkatan Kadar Kemurnian Silikon Dioksida Nindya Wulandari; Erfiani Erfiani; Irzaman Irzaman; Utami Dyah Syafitri
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 19 No. 2 (2022): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v19i2.9492

Rancangan percobaan merupakan serangkaian uji yang bertujuan mengamati dan mengidentifikasi perubahan-perubahan pada output respon disebabkan oleh perubahan-perubahan pada variabel input dari suatu proses. Penelitian ini bertujuan untuk mendapatkan rancangan terbaik untuk peningkatan kadar SiO2. Silikon Dioksida (SiO2) merupakan salah satu mineral yang paling banyak ditemukan di bumi. SiO2 banyak digunakan di berbagai bidang sehingga ketersediaannya semakin berkurang. Prosedur kemurnian dapat digunakan untuk meningkatkan kemurnian silika yang memiliki kualitas rendah dengan mengubah suhu dan laju kenaikan suhu. Metode yang digunakan adalah desain G-optimal menggunakan algoritma Variable Neighborhood Search (VNS). Model yang digunakan dalam meningkatkan kemurnian silikon dioksida adalah model non-linier yang mengikuti distribusi eksponensial decay. Titik rancangan terbaik yang diperoleh dari rancangan G-optimal pada hubungan antara suhu (oC) dan laju kenaikan suhu (oC/menit) yaitu titik Â 800 ÂoCÂ hingga 900 ÂoC adalah kombinasi titik Â 800 ÂoC dan 1,67 oC/menit, 800 ÂoC dan 2,17 oC/menit, 815 oC dan 4,67 oC/menit, 825 ÂoC dan 4,17 oC/menit, 835 ÂoC dan 5 oC/menit, 855 ÂoC dan 2,17 oC/menit, 880 ÂoC dan 2,34 oC/menit, 895 ÂoC dan 4,67 oC/menit,Â serta 900 oC dan 4 oC/menit dengan nilai G-efisiensinya adalah 96,09%.

Rancangan G-Optimal pada Peningkatan Kadar Kemurnian Silikon Dioksida Nindya Wulandari; Erfiani Erfiani; Irzaman Irzaman; Utami Dyah Syafitri
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 19 No. 2 (2022): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v19i2.9492

Rancangan percobaan merupakan serangkaian uji yang bertujuan mengamati dan mengidentifikasi perubahan-perubahan pada output respon disebabkan oleh perubahan-perubahan pada variabel input dari suatu proses. Penelitian ini bertujuan untuk mendapatkan rancangan terbaik untuk peningkatan kadar SiO2. Silikon Dioksida (SiO2) merupakan salah satu mineral yang paling banyak ditemukan di bumi. SiO2 banyak digunakan di berbagai bidang sehingga ketersediaannya semakin berkurang. Prosedur kemurnian dapat digunakan untuk meningkatkan kemurnian silika yang memiliki kualitas rendah dengan mengubah suhu dan laju kenaikan suhu. Metode yang digunakan adalah desain G-optimal menggunakan algoritma Variable Neighborhood Search (VNS). Model yang digunakan dalam meningkatkan kemurnian silikon dioksida adalah model non-linier yang mengikuti distribusi eksponensial decay. Titik rancangan terbaik yang diperoleh dari rancangan G-optimal pada hubungan antara suhu (oC) dan laju kenaikan suhu (oC/menit) yaitu titik Â 800 ÂoCÂ hingga 900 ÂoC adalah kombinasi titik Â 800 ÂoC dan 1,67 oC/menit, 800 ÂoC dan 2,17 oC/menit, 815 oC dan 4,67 oC/menit, 825 ÂoC dan 4,17 oC/menit, 835 ÂoC dan 5 oC/menit, 855 ÂoC dan 2,17 oC/menit, 880 ÂoC dan 2,34 oC/menit, 895 ÂoC dan 4,67 oC/menit,Â serta 900 oC dan 4 oC/menit dengan nilai G-efisiensinya adalah 96,09%.

Optimalisasi Fitur WhatsApp Business dalam Meningkatkan Efektivitas Promosi dan Penjualan pada UMKM di Era Digital Novia, Siti Arita; Wulandari, Nindya; Fani, Lastri Anggi; Nazhirah, Afra
Jurnal Pengabdian West Science Vol 4 No 06 (2025): Jurnal Pengabdian West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jpws.v4i06.2243

Micro, Small, and Medium Enterprises (MSMEs) play an important role in the Indonesian economy, including culinary businesses such as Warung Bakso Solo in Tanjung Pinang. However, in facing the digital era, Warung Bakso Solo still relies on conventional marketing strategies that have limitations. Through this community service program, an analysis of marketing needs and the implementation of WhatsApp Business as a relevant and easy-to-implement digital solution was carried out. WhatsApp Business helps improve communication with customers, facilitates promotions, and expands market reach through features such as product catalogs, automatic messages, and customer labels. The results of the community service show that the use of WhatsApp Business has a positive impact on increasing promotional effectiveness, operational efficiency, and strengthening relationships with customers. This program is expected to be the first step for other culinary MSMEs in utilizing digital technology to increase competitiveness and support business growth.

Effectiveness of Non-SLS Shampoo Based on VCO and Tectona grandis Leaf Extract for Alopecia Treatment Nugraha, Fadel; Halim, Michelle Graciella Jacinta; Sihotang, Naomi Chiko Putri; Febrianto, Yudha; Safniyeti, Safniyeti; Wulandari, Nindya
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9150

Hair loss is a common condition found in various groups. Various factors can cause hair loss, including genetic factors, hormonal imbalance, stress, nutritional deficiencies, and certain medical conditions. The type of disorder that occurs can be hair loss (effluvium) or hair loss disorders to baldness (alopecia). The study aims to determine the effectiveness of non-SLS shampoo preparations with a combination of teak leaf extract (Tectona grandis) and virgin coconut oil (Cocos nucifera) in overcoming hair loss and increasing hair growth rate. The shampoo preparation was tested on mice with 4 treatment groups consisting of 1 control group and 3 groups of mice that were given treatment (P1 containing 1,5% teak leaf extract and 0% VCO, P2 containing 2% teak leaf extract and 0,15% VCO, and P3 containing 2,5% teak leaf extract and 0,30% VCO). The trial on mice was conducted for 21 days and the calculation of the length of the mouse fur using a caliper was carried out periodically for 7 days. The results of study showed that the third formula showed an increase in the rate of hair growth. The effect of shampoo that showed most significant difference was P3 with 2,5% teak leaf extract and 0,30% coconut oil. Shampoo products containing teak leaf extract and coconut oil have been proven to have potential to increase rate of hair growth. This shampoo formula can also reduce hair loss supported by scientific journals reporting that teak leaf extract can inhibit work of steroid 5-α reductase (5SAR) and secretion of Interleukin-1 Beta (1L-1β), where both compounds have a negative impact on hair growth.

G-OPTIMAL DESIGN OF NON-LINEAR MODEL TO INCREASE PURITY LEVELS OF SILICON DIOXIDE Wulandari, Nindya; Erfiani, Erfiani; Irzaman, Irzaman; Syafitri, Utami Dyah
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 2 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol17iss2pp0659-0666

Silicon Dioxide (SiO2) is one of the most abundant minerals found on earth. SiO2 is widely used in various fields, so its availability as a finite natural resource diminishes. A purity procedure can raise the purity of low-quality silica by altering the temperature and rate of temperature rise. This study aims to obtain the best design for increasing SiO2 levels—the G-optimal design on a non-linear model using the Variable Neighborhood Search (VNS) algorithm. The VNS algorithm employs two types of neighborhoods, one acquired by replacing one design point with a candidate set and the other by replacing two design points with two points in the candidate set. The model used to increase silicon dioxide's purity is a non-linear model that follows the exponential decay distribution. The best design points obtained from the G-optimal design on the relationship between temperature (oC) and the rate of temperature increase (oC/min) 800 oC to 900 oC is a pair of points 800 oC and 1,67 oC /min, 800 oC and 2,17 oC/min, 815 oC and 2,50 oC/min, 825 oC and 2,00 oC/min, 845 oC and 2,34 oC/min, 895 oC and 3,34 oC/min 900 oC and 3,50 oC/min with a G-efficiency of 96,41%.

Enhancing Teachers' Knowledge of Artificial Intelligence and Information Technology at SMPN 11 Pekanbaru: Penguatan Literasi Teknologi Informasi dan Artificial Intelligence bagi Pendidik SMPN 11 Pekanbaru Sujana, Teguh; Amalia Putri, Rizka; Nasfianti, Iis; Wulandari, Nindya; Fawrin, Heralda
Jurnal Pengabdian UntukMu NegeRI Vol. 9 No. 3 (2025): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v9i3.10349

Rapid technological advancements necessitate that educators constantly adjust to new advances, such as the application of artificial intelligence (AI) and information technology in the classroom. The fact remains that many educators are still not accustomed to incorporating technology into their lessons. By promoting the use of AI as a learning aid and adopting IT-based learning, this community service project seeks to improve the knowledge and abilities of SMPN 11 Pekanbaru instructors. The Participatory Rural Appraisal (PRA) method was used in the activity, which was conducted as a workshop with materials, discussions, and practical application. A variety of applications that can aid in the learning process were presented to the teachers. The activity's outcomes demonstrated a rise in teachers' technological knowledge and proficiency as well as the appearance of motivation to innovate in the classroom. Teachers can better prepare for the difficulties of teaching in the digital age by starting with this activity.

Sosialisasi Anti-Bullying melalui Teman Asik untuk Menciptakan Generasi Berkarakter Positif Wulandari, Nindya; Muharram, Maulana; Yasmine, Amanda Alivio; Ardianti, Anggi; Bangun, Evelyn Theodora Br; Mahendwiani, Ihza; Silalahi, Hiskia Quintris Br; Maryanto, Luna Salwa Putri; Islami, Nurul Hidayah; Rahma, Puja Dwi; Auliya, Rizka; Raudah, Sya'rani
Mestaka: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2026): APRIL 2026
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v5i2.934

Bullying in elementary schools is a phenomenon that requires serious attention as it can affect students’ emotional, social, and academic development. Low levels of empathy, insufficient moral awareness, and differences in individual characteristics often contribute to the occurrence of bullying behavior. This community service program aimed to enhance students’ knowledge and awareness of the dangers of bullying through a participatory anti-bullying socialization activity entitled Teman Asik (Tanpa Ejekan Menumbuhkan Aksi Positif). The activity was conducted at SD Negeri 02 Kampung Dalam, Siak Regency, involving approximately 80 students from grades five and six. The implementation methods included interactive material delivery, discussions, educational games, video screenings, and reflective activities using an expression tree as a learning medium. The results indicated a high level of student participation and engagement throughout the socialization process. Students were able to understand various forms of bullying, recognize its negative impacts, and demonstrate increased confidence in expressing their opinions and feelings related to bullying. This activity plays an important role in fostering empathy, mutual respect, and collective awareness to create a safe and positive school environment.

Analisis Faktor Penentu Keberhasilan Pengembangan Produk Baru Liquid Organic Biofertilizer di PT XYZ Afra Nazhirah; Nabilla Shafira; Azzahra Putri Rialdi; Siti Arita Novia; Nindya Wulandari
Studi Ilmu Manajemen dan Organisasi Vol 6 No 3 (2025): Oktober
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/simo.v6i3.4913

Purpose: The increasingly competitive fertilizer industry requires companies to pursue continuous product innovation. This study aims to evaluate the influence of product characteristics, sales promotion, and corporate reputation on the success of new product development (NPD) for Liquid Organic Biofertilizer (LOB) at PT XYZ. Methodology/approach: This study employed a quantitative approach using quota sampling involving 48 respondents who are consumers of the LOB product. Data were collected via questionnaires and analyzed using multiple linear regression analysis. Results/findings: The findings indicate that, simultaneously, product characteristics, sales promotion, and corporate reputation significantly affect NPD success. However, partially, only product characteristics have a positive and significant influence. Sales promotion and corporate reputation do not significantly impact NPD success. Limitations: The study's limitation lies in the sample size, which only includes 48 respondents and focuses on one company and one product type, limiting generalizability. Contribution: This study contributes to marketing and product development disciplines by highlighting the dominant role of product characteristics in NPD success in agribusiness. It offers strategic insights for business managers, especially in sustainable agriculture and organic product development.

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