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Investigasi Kualitas Air Pada Daerah Aliran Sungai Pisang Kota Padang-Sumatera Barat Tanjung, Denny Akbar
Journal of Natural Sciences Vol 4, No 3 (2023): Journal of Natural Sciences November
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v4i3.438

The aim of this research is to test water quality, including pH, conductivity, total dissolved solids (TDS), salinity, and turbidity. The research method uses quantitative methods. The research area includes 10 sample points around the Pisang river basin, Bungus Teluk Kabung, Padang, and West Sumatra. Samples were measured using a predetermined measuring instrument with three repetitions. Based on test results in all study areas, several water quality testing parameters met the standards of Ministry of Health Regulation No. 2 of 2023, such as pH and total solid density. Meanwhile, other parameters, such as salinity, conductivity, and turbidity, are still far from the predetermined thresholds. Treatment needs to be carried out so that the water can be used according to needs.

The effect of maleic anhydride concentration in manufacturing polypropylene grafted maleic anhydride compatibilizer on the test percent of grafting degree TANJUNG, DENNY AKBAR; JAMARUN, NOVESAR; LUBIS, ROSLIANA
Jurnal Natural Volume 24 Number 2, June 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v24i2.35317

The difference in polarity between materials often prevents direct interaction; therefore, a compatibilizer is required to facilitate reactions between polar and non-polar substances. This study aims to investigate the effect of maleic anhydride (MA) concentration on the grafting process of MA onto polypropylene (PP) chains, using benzoyl peroxide (BPO) as an initiator. The blending method employing an internal mixer was used to combine the materials, and the degree of grafting was determined via titration, with three replicates performed for accuracy. The results indicated that the highest grafting degree, 10.28%, was achieved at a composition of 86% PP, 11% MA, and 3% BPO. Fourier Transform Infrared (FTIR) spectroscopy analysis of polypropylene grafted with maleic anhydride (PP-g-MA) revealed new absorption peaks at wavenumbers 1707 cm and 1162 cm. Furthermore, increasing the concentration of maleic anhydride did not significantly affect the grafting degree. This study provides valuable insight for the development of PPg-MA compatibilizers.

Assessing the water quality in the Timbalun river watershed, Padang City, West Sumatra, Indonesia HAR, RUSLI; TANJUNG, DENNY AKBAR; JAMARUN, NOVESAR
Jurnal Natural Volume 25 Number 1, February 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v25i1.42009

The purpose of this study is to assess water quality, specifically pH, conductivity, total dissolved solids (TDS), salinity, and turbidity. The research utilizes quantitative methods and covers 15 sampling points across the Timbalun River basin in Padang City, West Sumatra, Indonesia. Samples were measured based on several parameters, with three repetitions for accuracy. The testing took place from August to September 2024. The results showed that some water quality parameters, such as pH and total dissolved solids, met the standards outlined by Ministry of Health Regulation No. 2 of 2023. However, other parameters, including salinity, conductivity, and turbidity, did not meet the specified thresholds. It is essential to implement treatment measures to ensure the water meets the required standards for its intended use.

The effectiveness of naphthaleneacetic acid and kinetin on the development of plantlet book cuttings of Chrysanthemum ornamental plants BUDI, RAHMAD SETIA; PARAMUJI, MUJI; TANJUNG, DENNY AKBAR
Jurnal Natural Volume 25 Number 1, February 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v25i1.42084

The high demand for chrysanthemum flowers, coupled with the challenge of acquiring quality seeds in large quantities within a short timeframe, presents significant problems in this study. One potential solution is to propagate plants and utilize plant growth regulators to accelerate their development. Tissue culture techniques, which are essential in agriculture and biotechnology, are employed to produce new plants by isolating, developing, and duplicating specific plant cells or tissues in the laboratory. This study aims to assess the effects of two plant growth regulators Naphthalene Acetic Acid (NAA) and Kinetin on the growth and development of stem cuttings or nodes from ornamental chrysanthemum plants (chrysanthemum) in vitro using MS media. The research utilized a completely randomized design (CRD) factorial approach featuring two treatment factors: NAA and Kinetin. A total of nine treatment combinations were tested, with NAA concentrations of 0.5, 1.0, and 1.5 ml L-1, and Kinetin concentrations of 1, 2, and 3 ml L-1. Each treatment was repeated three times. Observations included measurements of plant height, leaf count, root count, and wet weight. The best results for each parameter were observed in treatment K3N2, which yielded a plant height of 30.73 mm and an average of 18.33 leaves. The optimal results for root count and wet weight were found in treatment K3N3, which produced an average of 13.83 roots and 3.57 grams, respectively. Overall, increasing the concentrations of NAA and Kinetin positively influenced all parameters evaluated.

Design analysis of drainage system design on coal mining land BAHARUDDIN, ICHSAN INVANNI; HAR, RUSLI; ASSHIDIQQI, MUHAMMAD HABIB; ANARTA, RUDY; TANJUNG, DENNY AKBAR; MARYANTI, ENDANG
Jurnal Natural Volume 25 Number 3, October 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v25i3.45589

PT Bumi Bara Makmur Mandiri is a mining company engaged in coal mining, located in Hajran Village, Bathin XXIV District, Batang Hari Regency, Jambi Province. The company employs an open-pit mining method, which results in the formation of depressions that act as rainwater catchment areas, creating pools (sumps). To manage these sump areas effectively for mining activities, a mine dewatering drainage system is implemented. Over the past ten years, rainfall data indicates a catchment area of 246.02 hectares, with an estimated rainfall of 280.88 mm for a return period of ten years. The groundwater that accumulates in the pooling area has an inflow rate of 0.11 m/s, leading to a total water discharge entering PIT A of 39.12 m/second. Currently, there is one pump available with a power capacity of 10.83 kW to remove this water. Due to the significant water discharge, it is essential to design an economical open flow that can handle a flow rate of 2.96 m/s. Furthermore, a design for a holding pond is required, as the existing capacity is insufficient to accommodate the incoming water discharge, which hampers the sedimentation process. To address this, a redesigned settling pond with dimensions of 46 m x 36 m x 7 m and six compartments has been proposed. This solution will enhance the effectiveness of the mine drainage process

Kemandirian Ekonomi Masjid Melalui Pendanaan Dan Pengembangan Jamaah Dalimunthe, Mohd. Idris; Silalahi, Alistraja Dison; Harmain, Hendra; Nurlaila, Nurlaila; Ramzijah, Ramzijah; Tanjung, Denny Akbar
Journal Of Human And Education (JAHE) Vol. 3 No. 4 (2023): Journal Of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v3i4.484

Pentingnya kemandirian ekonomi, kemandirian pembiayaan yang terkait dengan fungsi lain dari masjid; fungsi sosial kemasyarakatan, pendidikan dan ekonomi., maka kami tim dosen melaksanakan pengabdian masyarakat di Forum Silaturahmi (Fosil) Badan Kemakmuran Masjid (BKM) Kecamatan Medan Tembung, beralamat di jalan Bayangkara No. 411 Kelurahan Indra Kasih Medan tembung, tepatnya berada di Masjid Al Imam Indra kasih Medan. Pelaksnaannya dengan sosialisasi menggunakan metode ceramah dan Focus Grup Diskusi (FGD) Pada metode ini ketua tim pengabdian masyarakat menyampaikan dan mepersentasikan materi terkait judul pengabdian masyarakat yang disampaikan sedangkan anggota membagikan materi dan absensi peserta kemudian dilakukan metode diskusi dan tanya jawab. Pelaksanaan pengabdian memberikan kebermanfaatan bagi masjid dan masyarakat terutama pembekalan keilmuan dalam hal pembiayaan, sumber daya modal. Memperkenalkan crowdfunding yang merupakan strategi alternative yang dapat digunakan dalam penggalangan dana yang lebih praktis dan efisien

Kemandirian Ekonomi Masjid Melalui Pendanaan Dan Pengembangan Jamaah Dalimunthe, Mohd. Idris; Silalahi, Alistraja Dison; Harmain, Hendra; Nurlaila, Nurlaila; Ramzijah, Ramzijah; Tanjung, Denny Akbar
Journal Of Human And Education (JAHE) Vol. 4 No. 1 (2024): Journal Of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v4i1.574

Pentingnya kemandirian ekonomi, kemandirian pembiayaan yang terkait dengan fungsi lain dari masjid; fungsi sosial kemasyarakatan, pendidikan dan ekonomi., maka kami tim dosen melaksanakan pengabdian masyarakat di Forum Silaturahmi (Fosil) Badan Kemakmuran Masjid (BKM) Kecamatan Medan Tembung, beralamat di jalan Bayangkara No. 411 Kelurahan Indra Kasih Medan tembung, tepatnya berada di Masjid Al Imam Indra kasih Medan. Pelaksnaannya dengan sosialisasi menggunakan metode ceramah dan Focus Grup Diskusi (FGD) Pada metode ini ketua tim pengabdian masyarakat menyampaikan dan mepersentasikan materi terkait judul pengabdian masyarakat yang disampaikan sedangkan anggota membagikan materi dan absensi peserta kemudian dilakukan metode diskusi dan tanya jawab. Pelaksanaan pengabdian memberikan kebermanfaatan bagi masjid dan masyarakat terutama pembekalan keilmuan dalam hal pembiayaan, sumber daya modal. Memperkenalkan crowdfunding yang merupakan strategi alternative yang dapat digunakan dalam penggalangan dana yang lebih praktis dan efisien

Effects of Naphthaleneacetic Acid and Kinetin on Chrysanthemum Plantlets in Vitro Sihotang, Saipul; Saragih, Magdalena; Sembiring, Swati; Sembiring, Riduan; Yanty, Dini Puspita; Tanjung, Denny Akbar; Afrida, Elli
Journal of Applied Agricultural Science and Technology Vol. 9 No. 4 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i4.315

Naphthaleneacetic acid (NAA) and kinetin play a crucial role in plant growth but must be used in correct proportions in order to produce the best outcomes. An optimal combination of both can enhance shoot, leaf, and root growth, whereas inappropriate doses may otherwise inhibit growth due to hormonal imbalance. This study examined the effects of the interaction between NAA and kinetin on the growth of chrysanthemum plants at eight weeks of age. The research was carried out using the Completely Randomized Design (CRD) in triplicate. The medium used was MS medium, supplemented with NAA at concentrations of 0–1.5 mg/L and kinetin at concentrations of 0–3 mg/L. The results indicate that NAA and kinetin positively influenced plant growth, but only when the optimal concentrations were applied. The best combination of NAA at 1.0 mg/L (N2) and kinetin at 3.0 mg/L (K3) produced the best results in terms of height (153 mm), number of leaves (31 leaves), number of roots (26 roots), and fresh weight (5.85 g). Increasing kinetin concentrations (K0-3) generally promoted plant growth, whereas excessive NAA concentrations (> 1.0 mg/L, N3) produced the opposite effect, likely due to toxicity or hormonal imbalance. The interaction between kinetin and NAA exhibited a synergistic effect up to a certain threshold, while excessive NAA application negatively impacted on plant development.

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