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All Journal JURNAL ILMIAH PLATAX Jurnal Kelautan Tropis Journal of Applied Geospatial Information Omni-Akuatika Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis EDUKATIF : JURNAL ILMU PENDIDIKAN Best Journal (Biology Education, Sains and Technology) Jurnal Laot Ilmu Kelautan Bubungan Tinggi: Jurnal Pengabdian Masyarakat International Journal Of Science, Technology & Management (IJSTM) Nusantara Hasana Journal ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) JOMPA ABDI: Jurnal Pengabdian Masyarakat Jurnal Bangun Abdimas Jurnal Pengabdian Masyarakat Bhinneka Abdi Jurnal Publikasi Journal of Research and Publication Innovation Jurnal Medika: Medika Journal of Marine Studies
Welmar Olfan Barat, Welmar Olfan
Universitas HKBP Nomensen Pematangsiantar
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Bioecological characteristics of mangrove snail in Langsa mangrove forest, Aceh, Indonesia: Diversity and community structure Mardiah, Nur Ainun; Erlangga, Erlangga; Syahrial, Syahrial; Hadinata, Fitra Wira; Ezraneti, Riri; Barat, Welmar Olfan Basten; Leni, Yusyam
Journal of Marine Studies Volume 1, Issue 1 (March, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i1.15792

Abstract

The most crucial aspect of managing an ecosystem or habitat is knowledge about accompanying biota, such as snails. The research on mangrove snails in the KPH Region III Aceh City of Langsa area was conducted in November 2021 with the goal of evaluating species diversity, density, ecological index, distribution, and their link to surrounding environmental conditions. Snail data was obtained via quadrat transects, with observation stations established using purposive sampling.The snail diversity was found to be five species from four families, with the highest density found in N. planospira (03.13 ind/m2). The diversity index was low (H' ‰¤ 2.0), dominance was moderate (0.5 < C ‰¤ 0.75), and uniformity tended to be balanced (0.5 < E ‰¤ 0.75). The distribution pattern is clustered (Iδ> 1), with C. cingulata being abundant (83.33%), and C. capucinus being frequently found (50.00%), N. planospiraonly found occasionally (36.11%), and L. scabra and T. telescopium are relatively uncommon (11.11% and 0.56%, respectively), with a link to environmental variables indicating that T. telescopium prefers fine mud substrates. Meanwhile, C. cingulata, C. capucinus, L. scabra, and N. planospiralive in habitats with fine mud substrates that are more solid than T. telescopiums habitats.
PEMANFAATAN BAHAN ALAM GUNA PEMBUATAN SPOT FOTO DAN BERISTIRAHAT DI DESA SIGAPITON KECAMATAN AJIBATA Wendy Sudito Pakpahan; Welmar Olfan Basten Barat
Abdi Jurnal Publikasi Vol. 3 No. 6 (2025): Juni
Publisher : Abdi Jurnal Publikasi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sigapiton Village, located in the Ajibata District of Toba Regency, North Sumatra, is situated on the shores of Lake Toba and covers an area of 70.80 km² (BPS, 2018). The village possesses various potentials that can be developed from both human and natural resources. The objective of the KPPM UHKBPNP group's work program in Sigapiton is to create resting areas for the residents, allowing them to take a moment to rest while engaging in their activities.  
Pelatihan Penggunaan Mesin Pengering Cengkeh dengan Menggunakan Gas Lpg di Kecamatan Ronggurnihuta Naibaho, Winfrontstein; Naibaho, Togar; Saragih, Ewin Handoco; Barat, Welmar Olfan Basten; Naibaho, Ronald
Jurnal Medika: Medika Vol. 4 No. 3 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/n0jsq176

Abstract

Cengkeh merupakan komoditas perkebunan penting di Kecamatan Ronggurnihuta, namun proses pengeringan tradisional yang mengandalkan sinar matahari sering terkendala cuaca, menyebabkan penurunan kualitas dan harga jual. Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan produktivitas dan kualitas cengkeh petani melalui pelatihan dan implementasi penggunaan mesin pengering cengkeh bertenaga gas LPG. Mesin ini menawarkan solusi efisien dan konsisten, tidak terpengaruh kondisi cuaca, sehingga proses pengeringan dapat berlangsung optimal. Metode pelaksanaan meliputi sosialisasi teknologi pengeringan modern, demonstrasi operasional mesin pengering, serta pendampingan langsung kepada kelompok petani terpilih. Hasil kegiatan menunjukkan peningkatan pemahaman dan keterampilan petani dalam mengoperasikan alat, serta kesadaran akan pentingnya pengeringan cengkeh yang terkontrol. Diharapkan pelatihan ini dapat memberdayakan petani lokal, mengurangi ketergantungan pada cuaca, dan pada akhirnya meningkatkan nilai ekonomi cengkeh di wilayah Ronggurnihuta. Implementasi teknologi sederhana ini berpotensi menjadi model bagi pengembangan komoditas pertanian lain di daerah pedesaan, mendukung keberlanjutan ekonomi masyarakat.
PEMBERDAYAAN MASYARAKAT DALAM PEMANFAATAN CHLORELLA SEBAGAI PAKAN IKAN GURAMI DAN PENDAMPINGAN EVALUASI MANAJEMEN USAHA BUDIDAYA IKAN Welmar Olfan Basten Barat; Tambos Sianturi; Mardame Sinaga
Nusantara Hasana Journal Vol. 5 No. 4 (2025): Nusantara Hasana Journal, September 2025
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v5i4.1701

Abstract

Tanjung Seri Village is a village in Laut Tador District, Batu Bara Regency, North Sumatra Province, Indonesia. The residents of Tanjung Seri Village are fish farmers, farmers, and traders. The national potential for aquaculture is estimated at 17.92 million hectares, including 2.83 million hectares of freshwater aquaculture. Feed that meets fish nutritional needs can improve the growth of fish fry to marketable size. The Tanser SPN Bersama community group and the Community Partnership Empowerment (PKM) team discussed the problems experienced by their partners, thus forming conclusions about the problems to be resolved, namely in the areas of production and management. Community partnership empowerment activities for productive economic partners, namely the gourami farmer group, namely: TANSER SPN BERSAMA are carried out in 5 stages in implementing the solutions offered, namely socialization, training, mentoring, monitoring and evaluation and application of technology. The results of the evaluation of the gourami fish business evaluation training program show that 10% have understood the outline of the evaluation of catfish farming management business, after the training, 100% of community groups know catfish farming management, there is an increase of 90% from the 10 respondents recorded.
The Potential Bioactive Compound of Rhizophora Apiculata Mangrove Fruit Extract in Inhibiting the Growth of Salmonella typhi Bacteria Sianipar, Herna Febrianty; Sinaga, Mardame Pangihutan; Barat, Welmar Olfan Basten
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.12344

Abstract

Infections caused by Salmonella typhi remain a serious global health problem, particularly due to the increasing bacterial resistance to conventional antibiotics. Therefore, the search for effective natural antibacterial sources is urgently needed. Rhizophora apiculata, a mangrove plant known to contain various bioactive compounds, has the potential to be an alternative antibacterial source. This study aims to identify the phytochemical content in R. apiculata fruit extract and evaluate its antibacterial activity against S. typhi using the disc diffusion method and bacterial cell morphology analysis via SEM. The phytochemical screening results revealed that the extract contains phenolics, tannins, alkaloids, and flavonoids. However, saponins and steroids were not detected. The antibacterial activity test showed that the extract at a concentration of 250 mg/mL significantly (p < 0.05) inhibited the growth of S. typhi, with the largest inhibition zone (11.6 mm). SEM observations supported this finding by showing a decrease in the number of bacterial cells at extract concentrations of 125 mg/mL and 250 mg/mL, where the highest concentration caused the most bacterial cell death. This study demonstrates the potential of R. apiculata fruit extract as an effective natural antibacterial source for the development of alternative treatments for S. typhi infections
Sosialisasi Pentingnya Fasilitas Sarana Air Bersih Di Desa Mbinanga Kecamatan Pegagan Hilir Kabupaten Dairi Handoco, Ewin; Barat, Welmar Olfan Basten; Naibaho, Winfrontstein; Sinaga, Mardame Pangihutan; Samuel, Reaful
Jurnal Pengabdian Masyarakat Bhinneka Vol. 1 No. 3 (2023): Bulan Februari
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v1i3.52

Abstract

Sosialisasi Pentingnya Air Bersih, dimana air bersih merupakan salah satu kebutuhan masyarakat yang menunjang kehidupan suatu komunitas. penyediaan air bersih berkaitan erat dengan status kebersihan dan kesehatan setiap individu dalam masyarakat. Kegiatan sosialisasi ini ditujukan pada masyarakat Desa Mbinanga untuk memberikan edukasi tentang pentingnya penggunaan air yang bersih dalam kehidupan sehari-hari. Maksud dari kegiatan ini adalah untuk memberikan pengetahuan pada masyarakat setempat tentang pentingnya penggunaan air bersih dalam kegaitan sehari-hari. Metode yang digunakan dalam kegiatan ini adalah sosialisasi.Masyarakat Desa Mbinanga sangat membutuhkan sentuhan nyata untuk dapat menerima manfaat secara langsung dari adanya sarana air bersih di lokasi mereka bertempat tinggal. Selama ini masyarakat harus berjalan jauh dari atas bukit ke lembah atau desa tetangga mereka yang berjarak sekitar 1-1,5 Kilometer dari desa mereka. Sehingga hal ini sangat memberatkan dan tidak efektif serta efisien baik dalam waktu, tenaga dan biaya. Sosialisasi Sehingga dengan adanya sosialisasi ini diharapkan ada tindakan secara langsung kepada masyarakat. Pengabdian ini dapat meningkatkan pengetahuan masyarakat tentang pentingnya air bersih. Masyarakat mampu menyediakan air bersihnya dengan bergotong royong dan bekerjasama dengan pihak luar sebagai penyokong dana untuk keperluan material pembangunan. Perlunya kerjasama lintas sektoral baik masyarakat, swasta, keagamaan dengan pemerintah agar terjadi sinergi yang positif secara terintegrasi sehingga manfaatnya lebih luas ke seluruh desa. Mengingat air bersih merupakan hak dan kebutuhan seluruh warga desa.
Analysis Of Variation Of Paddle Wheel Photovoltaic Wheel Form In Microalgae Cultivation On Electricity Consumption Naibaho, Winfrontstein; Welmar Olfan Basten Barat; Hiras Naibaho, Romson
International Journal of Science, Technology & Management Vol. 3 No. 6 (2022): November 2022
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v3i6.669

Abstract

The main problem that is often found in the failure of microalgae production is poor water quality during the maintenance period. One of the causes of deteriorating water quality is the lack of oxygen which endangers microalgae which can inhibit cell growth so that it can reduce its productivity. On this basis, efforts are needed to refresh the water or aeration to help increase the dissolved oxygen (DO) level in the microalgae growth container using a paddle wheel. The development of an aerator blade design that has optimum efficiency is needed to reduce high electricity consumption and see more effective cell growth. For these problems, in this study, variations of the paddle wheel will be analyzed. Variations in the shape of the wheel used, namely straight and curved with the available aerators, are expected to have an optimum speed, area coverage and increase the amount of dissolved oxygen (DO). The method used is the experimental method . Based on this research, it was found that an increase in the value of cell growth occurred in variations in the shape of a straight paddle wheel of 122 cells/ml .
Co-Authors Abda Abda Ady Frenly Simanullang Ananda Yuli Fazilah Tanjung Andry Agasi Hasiholan Purba Apriani Sijabat Cut Meurah Nurul ‘Akla Deo Kartiko Ambarita Dietriech Geoffrey Bengen Elina Lulu Rumapea Elprinawati Purba Erlangga Erlangga Ewil Wiranda Sitorus Ewin Handoko Fitra Wira Hadinata Gokma Nababan Goldbert Harmuda Duva Sinaga Hadinata, Fitra Wira Handoco S, Ewin Handoco, Ewin Hendrik V. Ayhuan Heppy Theresia Sitompul Herlina Adelina Meria Uli Sagala Herman Herman Herna Febrianty Sianipar Herna Febrianty Sianipar Hiras Naibaho, Romson Ivan Gultom Jono Barita Sianipar Leni, Yusyam manik, ria retno Manik, Riau Wanshi Mardame Sinaga Mardiah, Nur Ainun Muhammad Hatta Mujizat Kawaroe NAIBAHO, TOGAR Naibaho, Winfronstein Naibaho, Winfrontstein Natalia Murni Br Situmorang Novita Simanjuntak Nur Ikhsan Nur Jannah Ginting Pakpahan, Dany Alberto Purba, Ricky Tommy Fransiskus Putri Winda Sidabutar Reaful Samuel Sitorus Retno, Ria Riau Wanshi Manik Riri Ezraneti Ronita Haulian Simamora S, Ewin Handoco Samuel, Reaful Saragih, Ewin Handoco Sarah Aufah Athiya Setya Indra Padma Putri SIANTURI, TAMBOS AUGUST Siburian, Daniel Tony E Silaen, Srinatalia Simamora, Ronita Haulian Sinaga, Christa Voni Roulina Sinaga, Mardame P Sinaga, Mardame Pangihutan Sitio, Lista Celsi Wilda Sitorus, Reaful Samuel Sri Maneni Manurung Srinatalia Silaen Srinatalia Silaen Srinatalia Silaen Syahrial Syahrial SYAHRIAL SYAHRIAL Vaisal Raju Siahaan Wendy Sudito Pakpahan