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All Journal Jurnal Arbitrer BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Ilmiah Biologi UMA (JIBIOMA) Jurnal Abdimas Indonesia : Jurnal Abdimas Indonesia Indonesian Community Journal Takuana: Jurnal Pendidikan, Sains, dan Humaniora Jurnal Bastra (Bahasa dan Sastra) Jurnal Natural Jurnal Agro Fabrica
Rosliana Lubis
Universitas Medan Area
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Public Health Social Sciences Other

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Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ROSLIANA LUBIS; SRI WAHYUNA SARAGIH; WARDATUL HUSNA IRHAM; AJMAIN AJMAIN; SAISA SAISA
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.29935

Abstract

The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.
Pembuatan Eco-print Pada Totebag Menggunakan Tanaman Sekitar Lingkungan Sebagai Zat Warna Alami Rosliana Lubis; Ahmad Prayudi; Effiati Juliana Hasibuan
I-Com: Indonesian Community Journal Vol 3 No 4 (2023): I-Com: Indonesian Community Journal (Desember 2023)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/icom.v3i4.3493

Abstract

Pelatihan eco-print pada totebag dengan mamanfaatkan tanaman sekitar merupakan bentuk kegiatan program kemitraan masyarakat (PKM). Mitra Kegiatan adalah ibu-ibu PKK dan anggota kelompok karang taruna Binjai estate, Binjai, Sumatera utara. Kegiatan ini dilakukan karena banyak potensi tanaman di kelurahan Binjai estate yang bisa dimanfaatkan untuk bahan pembuatan eco-print, diantaranya daun tanaman lanang (Oroxylum Indicum), daun jarak kepyar (Ricinus communis L.), daun afrika (Vernonia amygdalina Del), daun akalifah (Acalypha indica), dan lain-lain. Tujuan pengabdian adalah untuk meningkatkan pengetahuan dan ketrampilan mitra dalam pembuatan eco-print. Bentuk kegiatan yang dilakukan adalah : (a) sosialisasi (b) pendampingan dan praktik pembuatan eco-print, dan (c) membuat totebag dari kain yang telah dieco-print. Teknik  eco-print yang digunakan adalah teknik steam. Hasil yang diperoleh adalah : totebag yang telah di eco-print dan dapat dipasarkan secara komersil secara online maupun offline dan mitra memiliki peningkatan ketrampilan membuat eco-print serta mampu menggunakan kain yang telah di eco-print menjadi totebag.
DISFEMISME PADA WACANA LINGKUNGAN BANJIR DI SUMATERA UTARA DALAM MEDIA MASSA DARING Regita Ayuni Putri Ginting; Dwi Widayati; Rosliana Lubis
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol 7, No 1 (2024): February 2024
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v7i1.1749

Abstract

Tujuan dari penelitian ini ialah untuk menguraikan latar belakang digunakannya disfemisme pada wacana lingkungan banjir di Sumatera Utara menggunakan teori Allan dan Burridge. Penelitian ini dilakukan untuk menemukan bagaimana sebuah media massa daring mengemas wacana menggunakan piranti bahasa untuk membangun ideologi dan memengaruhi sikap pembaca dalam menyikapi sebuah fenomena lingkungan. Dalam pengumpulan datanya, digunaakan metode simak dengan teknik catat. Metode agih dengan teknik bagi unsur langsung dan teknik ganti digunakan untuk menganalisis datanya. Hasil penelitian ini menunjukkan adanya disfemisme dalam wacana lingkungan banjir di Sumatera Utara dalam media massa daring Waspada.id, Medanbisnisdaily.com, Waspada.co.id, Orbitdigitaldaily.com, dan Analisadaily.com berupa kata, frasa, atau kalimat dengan berbagai latar penggunaannya. Kelima portal berita daring tersebut menggunakan kata, frasa, dan kalimat berupa disfmesime dengan latar belakang untuk menunjukkan rasa tidak suka atau tidak setuju terhadap seserorang atau sesuatu, penggambaran yang negatif tentang seseorang atau sesuatu, mengungkapkan kemarahan atau kejengkelan, menunjukkan rasa tidak hormat atau merendahkan seseorang, mengolok-olok, mencela, atau menghina, melebih-lebihkan sesuatu, menghujat atau mengkritik, serta menunjukkan sesuatu hal bernilai rendah. Hasil penelitian ini dapat menjadi gambaran mengenai sikap penulis atau wartawan terhadap penulisan berita khususnya pada situasi ekologi.
Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ROSLIANA LUBIS; SRI WAHYUNA SARAGIH; WARDATUL HUSNA IRHAM; AJMAIN AJMAIN; SAISA SAISA
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.29935

Abstract

The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.
Pengaruh Pupuk Cair dari Limbah Kulit Semangka pada Pertumbuhan Selada Keriting Hia, Indah Kurniati; Rahmiati, Rahmiati; Susilo, Ferdinand; Lubis, Rosliana
Jurnal Ilmiah Biologi UMA (JIBIOMA) Vol 5, No 2 (2023): November
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jibioma.v5i2.2545

Abstract

Liquid organic fertilizer (LOF) is utilized as an alternative to enhance soil quality and crop yields. Organic waste from watermelon rinds (Citrullus lanatus) serves as one of the raw materials for LOF production. This study aims to assess the impact of LOF on the growth of curly lettuce (Lactuca sativa). The research employed an experimental method with five different LOF concentrations, ranging from no LOF (control) to 10% LOF. The results indicate that LOF application does not significantly affect the height of the plants, leaf count, leaf width, or the wet weight of curly lettuce. However, the use of undiluted 100 ml LOF leads to wilting and plant death, while increasing LOF concentration does not support the optimal growth of curly lettuce.
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

Abstract

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.
Preparation and characterization of physical properties of molded pulp from empty fruit bunches of oil palm LUBIS, ROSLIANA; RIYANTO, RIYANTO; SAISA, SAISA
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.v24i2.37444

Abstract

This research aims to determine the impact of pretreatment on empty fruit bunches (EFB) of palm oil fibers before the pulping process on the quality of the molded pulp produced. The study includes EFB fiber pretreatment processes, pulp production, pulp molding, physical characteristic analysis, and molded pulp performance evaluation. The pulp production process involves acid-base hydrolysis reactions. The produced molded pulp is done manually. Characterization of the molded pulp includes measurements of paper grammage, thickness, density, and moisture content. The characteristics of pulp produced from pretreated EFB fibers are as follows: an average grammage value of 415.48 g/m, paper thickness of 1.53 mm, water absorption capacity of 13.33-33.33%, density of paper of 0,026 x 106 - 0,027 x 106 g/m3, and a smooth surface morphology. Meanwhile, the characteristics of pulp produced from without pretreatment EFB fibers include an average grammage value of 372.18 g/m, paper thickness of 0.77 mm, water absorption capacity of 20.34-43.21%, density of paper of 0,004 x 106 - 0,008 x 106 g/m3, and a rough surface morphology due to pores on the fiber surface.
Pelatihan dan Penguatan Komunikasi Kepada Kelompok Tani Tentang Pembibitan Sawit Bersertifikasi Rosliana Lubis; Effiati Juliana Hasibuan; Ahmad Prayudi; Affandi Affandi
I-Com: Indonesian Community Journal Vol 4 No 4 (2024): I-Com: Indonesian Community Journal (Desember 2024)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/icom.v4i4.5713

Abstract

This community service activity aims to provide training and strengthen communication to farmer groups about certified oil palm nurseries. The activity partner is a farmer group (Poktan) Putra Mandiri of Gunung Ambat village, Sei Bingai District, Langkat Regency, North Sumatra. The productivity of oil palm fresh fruit bunches (FFB) in this village is still low because the oil palm seeds used are "mariles ” seeds or random seeds that are not certified. The form of activities carried out are: (a) Training to partners on certified oil palm seedlings and seedling techniques, and (b) Practical practice of planting certified oil palm sprouts on partner land with DXP Simalungun variety. The results of the training and practical practice showed an increase in the knowledge and skills of farmer groups about certified palm oil seeds and nursery techniques, as well as the formation of a more effective communication model in the form of a combination of theory and practical practice. Strengthening this communication is key in conveying clear and applicable information, so that it can encourage the sustainability of more productive oil palm farming businesses.
ISOLASI DAN KARAKTERISASI PULP TANDAN KOSONG KELAPA SAWIT Dini, Dini Pratiwi; Lubis, Rosliana
Jurnal Agro Fabrica Vol. 6 No. 2 (2024): Desember 2024
Publisher : Institut Teknologi Sawit Indonesia (ITSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jaf.v6i2.285

Abstract

This study aims to isolate and characterize pulp derived from oil palm empty fruit bunch fibers. Oil palm empty fruit bunch fiber has great potential as an alternative raw material in the paper industry due to its abundant availability and environmentally friendly nature. The pulp isolation process was carried out using acid and base hydrolysis methods. Characterization carried out includes measurement of cellulose content and pulp quality analysis. Pulp quality parameters analyzed included initial milled degree, bright degree, number of stains, extractive content (dichloromethane), moisture content (AD), and mechanical strength indices, such as tear index, crack index, and tensile index at a milled degree of 300 ml CSF. The results showed that the pulp produced from oil palm empty fruit bunch fibers through the acid-base hydrolysis process had a cellulose content of 56-58%. The quality analysis of this pulp refers to the quality requirements according to SNI 6107 for leaf-bleached Kraft Pulp (LBKP).
Pelatihan Ecoprint Menggunakan Ekstrak Warna Tanaman Sekitar Rosliana Lubis; Riyanto Riyanto; Effiati Juliana Hasibuan
Jurnal Abdimas Indonesia Vol. 4 No. 2 (2024): April-Juni 2024
Publisher : Perkumpulan Dosen Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53769/jai.v4i2.743

Abstract

Ecoprint merupakan teknik membatik dengan menggunakan ekstrak zat warna tanaman sehinga ramah lingkungan. Pelatihan ini bertujuan untuk memperkenalkan dan mengembangkan keterampilan masyarakat dalam memanfaatkan tanaman sekitar untuk menghasilkan produk tekstil yang estetis dan berkelanjutan. Peserta pelatihan adalah kelompok ibu-ibu PKK desa Sei mencirim, Kecamatan Kutalimbaru Deli Serdang Sumatera Utara. Peserta pelatihan diperkenalkan pada berbagai jenis tanaman yang dapat digunakan, teknik ekstraksi pigmen, dan proses penerapan ecoprint pada kain. Hasil pelatihan menunjukkan bahwa pemanfaatan ekstrak tanaman lokal tidak hanya mengurangi ketergantungan pada pewarna kimia, tetapi juga meningkatkan nilai ekonomi dan estetika produk tekstil. Selain itu, kegiatan ini juga berpotensi untuk mendukung pelestarian lingkungan dan budaya lokal.
Co-Authors Abdul Karim Adhyaksa, Yohannes Affandi Ahmad Prayudi Aji Suteja AJMAIN AJMAIN Apriansyah Sembiring Arief Budi Mulia Astri Indah Manalu Atsary, Tsara Budiarti Sembiring Dini, Dini Pratiwi Dwi Mutia Anggraini Dwi Widayati Effiati Juliana Hasibuan Emmy Harso Kardhinata Ferdinand Susilo Fitri Dian Puspa Nadeak Fitriani, Rita Gustianingsih Gustianingsih Hasibuan, Mahidin EL Wafa Hia, Indah Kurniati Indah Destriani Samosir Izhar Hasan Nasution Jamilah Nasution KIKI NURTJAHJA Meida Nugrahalia Meida Nugrahalia, Meida Meliala, Bibel Agrivino Muhammad Ferdiansyah Muhammad Usman Muhammad Usman, Muhammad Muhammad Yusuf Muhammad Yusuf Munte, Nuriana Muthiah Muthiah Novesar Jamarun Nuriana Munte Rahmiati Rahmiati Regita Ayuni Putri Ginting Rita Fitriani Riyanto Riyanto Riyanto riyanto Riyanto Riyanto Riyanto Riyanto Riyanto Riyanto SAISA SAISA SAISA SAISA SAISA, SAISA Sartini Sartini Sigit Siti Rubiatik Siti Rubiatik, Siti Sri Wahyuna Saragih Tanjung, Denny Akbar Tarigan, Emilia Surabina Br Tsara Atsary WARDATUL HUSNA IRHAM Zakki Rizkiyah Zakki Rizkiyah, Zakki