Garuda - Garba Rujukan Digital

Fabrication and Characterization of Chitosan/N-Phthaloyl Composite Membrane for DMFC Application Nugraeni, Christine Dyta; Atmaja, Lukman; Hayati, Nur; Purwanto, Mochammad; Santoso, Mardi; Kusumawati, Yuli
Jurnal Riset Kimia Vol 12, No 2 (2021): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.408

Modified chitosan membrane is one of the promising membranes for polymer electrolyte membrane. Chitosan/N-phthaloyl chitosan composite membranes were fabricated to obtain high proton conductivity and low methanol permeability. Membranes were fabricated by casting method and solvent evaporation. Surface morphology, mechanical analysis, methanol permeability, and proton conductivity were used to characterize the overall properties. FT-IR spectra exhibited the presence of interaction of chitosan and n-phthaloyl/chitosan. SEM analysis showed that the surface roughness of composite membrane increases as the n-phthaloyl loading increases. The highest proton conductivity of synthesized membrane is at 2.4 mS.cm-1 and is higher than pristine chitosan membrane at 1.6 mS.cm-1. Moreover, with n-phthaloyl/chitosan addition, the methanol permeability was also improved. The correlation between proton conductivity and methanol permeability in composite membranes suggests that the blend has its potential in DMFC application.

PELATIHAN PENGOLAHAN RUMPUT LAUT MENJADI PRODUK “NATA DE SEAWEED” BAGI KELOMPOK WANITA TANI RUMPUT LAUT DASAWISMA CEMPAKA KELURAHAN PANTAI AMAL KOTA TARAKAN Kartina Kartina; Christine Dyta Nugraeni; Tuty Alawiyah; Awaludin Awaludin; Andika Hidayat; Boy Saputra
Jurnal Pengabdian Masyarakat Borneo Vol 5, No 1 (2021)
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/jpmb.v5i1.1966

Hasil panen rumput laut di Kota Tarakan mencapai 1.000 ton dan tiap tahunnya mengalami kenaikan, namun sebagian besar produknya hanya dijual berupa rumput laut kering dan sedikit hasil yang berupa produk olahan. Mitra belum memiliki pengalaman dalam pengolahan rumput laut. Tujuan program ini adalah menyalurkan pengetahuan mengenai divertifikasi rumput laut dan memberikan pelatihan pembuatan produk divertifikasi dengan bahan dasar berupa rumput laut. Produk yang dihasilkan pada program ini adalah Nata de Seaweed. Program ini secara khusus diarahkan untuk meningkatkan pemberdayaan Kelompok Ibu-ibu Dasawisma Cempaka di Kelurahan Pantai Amal Tarakan, dalam mengembangkan produk minuman dengan bahan dasar rumput laut lokal untuk meningkatkan diversifikasi produk dengan nilai ekonomi yang lebih tinggi. Metode yang dilakukan dalam beberapa tahap: 1) Perancangan kegiatan, 2) Uji coba pembuatan Nata de Seaweed skala laboratorium, 3) Persiapan peralatan, 4) Pelaksanaan pelatihan, 5) Pendampingan untuk pengemasan dan prosedur perizinan, 6) Evaluasi kegiatan pelatihan dan pendampingan pasca pelatihan. Berdasarkan hasil kegiatan disimpulkan bahwa program ini telah meningkatan pengetahuan dan pengalaman khalayak sasaran, dan mereka dapat memproduksi produk Nata de Seaweed.

Fabrication and Characterization of Chitosan/N-Phthaloyl Composite Membrane for DMFC Application Christine Dyta Nugraeni; Lukman Atmaja; Nur Hayati; Mochammad Purwanto; Mardi Santoso; Yuli Kusumawati
Jurnal Riset Kimia Vol. 12 No. 2 (2021): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.408

Modified chitosan membrane is one of the promising membranes for polymer electrolyte membrane. Chitosan/N-phthaloyl chitosan composite membranes were fabricated to obtain high proton conductivity and low methanol permeability. Membranes were fabricated by casting method and solvent evaporation. Surface morphology, mechanical analysis, methanol permeability, and proton conductivity were used to characterize the overall properties. FT-IR spectra exhibited the presence of interaction of chitosan and n-phthaloyl/chitosan. SEM analysis showed that the surface roughness of composite membrane increases as the n-phthaloyl loading increases. The highest proton conductivity of synthesized membrane is at 2.4 mS.cm-1 and is higher than pristine chitosan membrane at 1.6 mS.cm-1. Moreover, with n-phthaloyl/chitosan addition, the methanol permeability was also improved. The correlation between proton conductivity and methanol permeability in composite membranes suggests that the blend has its potential in DMFC application.

Growth Characteristics Layur Fish Lepturacanthus savala in Juata Waters, Tarakan, Indonesia Agus Indarjo; Gazali Salim; Fahrizal Amir; Supriadi Supriadi; Permana Ari Soejarwo; Christine Dyta Nugraeni; Lukman Yudho Prakoso; Ambariyanto Ambariyanto; Muhammad Firdaus; Julian Ransangan
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.25.3.127-134

The city of Tarakan, Indonesia, benefits economically from abundant marine biological resources, one of which is the layur fish, known commercially as ribbonfish. The purpose of this study was to analyze the growth character of the layur fish (Lepturacanthus savala) obtained from the juata waters of Tarakan City. The method of this quantitative and descriptive study was to analyze the growth of layur fish Lepturacanthus savala in the Juata waters off the coast from the city of Tarakan. Body shape, length, weight, and ratio sex data were collected from sites selected by the purposive sampling method based on trawl fishing catch. Secondary data, collected from interviews of fishing personnel, included the number of catches using trawling gear and trawl fishing location. The length ranges of male from 20,4 to 54,0 cm with an average length of 37,2±16.8 cm (n = 255) and the length ranges of female from 20,5 to 68 cm with an average length of 44,25±23.75 cm (n = 275). The results showed that maximum length of male layur fish was smaller than the maximum length of female fish, which were 59.352 cm at 267 d and 72.638 cm at 315 d, respectively. The result shows a negative allometric growth pattern male and female layur fish was found to be the same and sex ratio of male to female has a ratio of 1,0: 1,8 with a percentage of males at 48.11% and females at 51.89%. The majority of male and female fish exhibited a thin body shape (51,4% of male and 52% of female).

Characteristics of Von Bertalanfy Growth, Allometric, Condition Index And Mortality of Periophthalmus barbarus in Mangrove and Probiotics Conservation Area (KKMB), Tarakan, North Kalimantan Agus Indarjo; Gazali Salim; Mufrida Zein; Susiyanti Susiyanti; Permana Ari Soejarwo; Christine Dyta Nugraeni; Stephanie Bija; Yen Thi Hong Pham
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

The Mudskipper (P. barbarus) lives in intertidal mud flats and it becomes an indicator of water quality. The transformation of construction and water pollution in this area is important to investigate due to interaction of fishery industry, home residence, and market area surrounding areas. The aim of this research was to analyze the characteristic of Von Bertalanffy growth, allometric, condition index, and mortality of the P. barbarus in KKMB, Tarakan city. The research was designed by using descriptive quantitative method. The sampling process used purposive sampling. The sampling was conducted for 12 times plot.transect-1 in the extension area of KKMB, Tarakan city with a total area is 12 Ha, plot.transect-1area is 10x10 m2, and distance between each transect is 10 m2. Sampling was carried out in survey area and laboratory to identify the gender and calculate total length and weight. The result showed the growth of male mudskipper (L∞ = 26.545 cm) and female (L∞ = 17.594 cm). Their size and the total population was decreased. The characteristic of male mudskipper growth was positive allometric, then female was negative allometric. The natural mortality and the catch of male mudskipper were higher than female.

Peningkatan Kualitas Air Dengan Proses Filtrasi di Embung Desa Bebatu, Kecamatan Sesayap Hilir, Kabupaten Tana Tidung, Provinsi Kalimantan Utara, Indonesia Agus Indarjo; Christine Dyta Nugraeni; Mufrida Zein; Gazali Salim; Achmad Daengs GS
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 2 No. 2 (2020): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (282.833 KB)

Program pengabdian kepada masyarakat bertujuan untuk mengedukasi masyarakat terkait meningkatkan kualitas air dengan proses filtrasi di embung desa bebatu Kecamatan Sesayap Hilir Kabupaten Tana Tidung Provinsi Kalimantan Utara. Pengabdian ini dilakukan secara eksplanatori dengan pendekatan kuantitatif. Teknik pengumpulan data dilakukan dengan cara observasi. Metode analisis data berupa uji beda Paired Sample T-Test.. Hasil dalam program pengabdian ini menunjukkan bahwa kualitas air di embung Desa Bebatu, Kecamatan Sesayap Hilir Kabupaten Tana Tidung Provinsi Kalimantan Utara jika ditinjau secara fisika memiliki nilai TSS 12,6 mg/L dengan standar baku mutu air 50 mg/L, nilai TDS 868 mg/L dengan standar baku mutu air 1000 mg/L sehingga memenuhi krtieria baku mutu air, artinya air Embung Desa Bebatu setelah di filtrasi termasuk layak untuk dikonsumsi. Sedangkan ditinjau secara kimia, air embung di Desa Bebatu setelah proses filtrasi memiliki kandungan ammonia 0,1082 mg/L dengan standar baku mutu air 0,3 mg/L, nitrit 0,0954 mg/L dengan standar baku mutu air 0,06, besi 0,124 mg/ L dengan standar baku mutu air 0,3 mg/L , dan seng 0,198 mg/L dengan standar baku mutu air 0,05 mg/L. Nilai yang dihasilkan dari pengujian kimia setelah filtrasi termasuk dalam standar baku mutu air sehingga air di Embung Desa Setabu layak untuk dikonsumsi dan dilakukan upaya peningkatan

Analysis Activities International Coastal Clean-up in Pantai Amal Baru, Tarakan Indonesia Gazali Salim; Agus Indarjo; Mufrida Zein; Asriadi; Ayu Tri Fatma; Rezkyana; Nasrul; Rusli; Suriyanti; Nabila; Achmad Daengs GS; Rukisah; Christine Dyta Nugraeni
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 2 No. 2 (2020): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1053.917 KB)

Tarakan administratively is a city which has a fairly wide coastal area both land and sea which is categorized ecologically as an island that has a high level of natural resources. The magnitude of this potential has a significant impact on large-scale exploitation to meet economic needs by not referring to environmental sustainability in a sustainable manner such as the presence of waste due to fisheries or community life activities on the coast. The purpose of this research is to study the analysis of international coastal cleanup (ICC) in the Pantai Amal Baru of Tarakan city. The main research results in the activities of the ICC on the Amal Baru beach found 3 different types of waste, namely the type of waste from seaweed cultivation at 608 kg with a percentage of 58.29%; types of waste from residents around the New charity beach by 405 kg with a percentage of 38.83%; the type of waste from nature is 30 kg with a percentage of 2.88%.

Peningkatan Nilai Ekonomi Anggur Laut (Caulerpa sp.) Melalui Diversifikasi Produk Menjadi Sirup dan Selai Agus Indarjo; Gazali Salim; Andi Izza Naafilah; Mazlan; Ayu Tri Fatwa; Christine Dyta Nugraeni
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 2 No. 2 (2020): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.447 KB)

Masyarakat pada umumnya lebih menyukai sirup dan selai, selain pembuatannya yang mudah juga karena produk tersebut memiliki cita rasa dan aroma manis yang cocok disetiap kalangan terlebih lagi oleh anak-anak. Demi meningkatkan nilai anggur laut jenis Caulerpa sp tulisan ini akan menjelaskan bagaimana cara pengolahan sirup dan selai anggur laut tersebut dalam industri berskala kecil. Metode yang digunakan pada proses pembuatan sirup dan selai anggur laut adalah metode eksperimen yang mana melalui tahapan sortasi, pencucian, pemblenderan, penyaringan sari, pemanasan, pendinginan, hingga pengemasan produk. Hasil yang didapatkan setelah melakukan proses adalah dimana penambahan gula sangat penting untuk keberhasilan pembuatan sirup sementara sisa ampas penyaringan sari bisa digunakan kembali untuk membuat selai. Kesimpulan akhir yang menjadi poin penting kegiatan ini adalah proses diversifikasi anggur laut menjadi sirup dan selai tidak menghasilkan limbah dalam pengolahan bahan bakunya (zero waste) karena beriringan saat penyaringan ampas yang tersaring pada pembuatan sirup dapat digunakan kembali untuk membuat selai

Analysis Model of Giant Prawns Population (Macrobrachium rosenbergii) in Estuary Edge of Sembakung Waters, Nunukan, Indonesia Agus Indarjo; Gazali Salim; Christine Dyta Nugraeni; Lukman Yudho Prakoso; Permana Ari Soejarwo; Rukisah Rukisah; Yen Thi Hong Pham; Achmad Daengs GS; Hariyadi Hariyadi; Abdul Jabarsyah
Jurnal Ilmiah Perikanan dan Kelautan Vol. 12 No. 2 (2020): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v12i2.18829

HighlightThe sex ratio of giant prawns in the waters of fe- male groceries is 3 times higher than that of males.The growth characteristic of male and female giant prawns is negative allometry, but the male and female body shapes are fat.Total mortality, capture mortality, catch rate, male prawns are higher than females.The male infinitive growth is longer than the female,but the female's growth rate is faster than male.AbstractGiant prawns (Macrobrachium rosenbergii) is a crustacean class that has the larg- est size and its habitat in Sembakung waters included brackish water (estuarine) with a salinity variable of 6.5+0.5 ppt and a temperature variable of 28.5+0.5OC and a variable pH of 6 (acidic). The objective of this research was to analyze the growth and mortality model of giant prawns (M. rosenbergii) that was taken from the catch of fisherman in the estuary, Sembakung sub-district, Nunukan Regency, Indonesia. The study was conducted for 3 months from November 2019 to Janu- ary 2020. The sampling was by using a survey method with purposive judgment sampling based on a catch of 14 fishermen who used the bottom fish pot from Sembakung waters, Nunukan Regency (Indonesia). The data collection included data of sex, total length, and the total weight of giant prawns. While analysis was employed for growth pattern, condition index, Von Bertalanffy growth, and mor- tality. The results obtain the sex ratio of male and female giant prawns 1:3.67. The growth pattern of male and female giant prawns were allometric negative. The growth of the von Bertalanffy model for infinitive growth of male giant prawns were 21.219 cm and female were 18.42 cm, respectively the mortality from giant prawns obtain total male mortality is 2,257, catch mortality is 1.92 and natural mortality is 33.75% with an exploitation rate of 0.85 (85%). The total female mor- tality is 1.528, catch mortality is 120.1% and natural mortality is 32.69% with an exploitation rate of 0.786 (78.6%).

Sosialisasi Pengurangan Sampah Plastik Guna Melindungi Penyu Laut di Pulau Serangan Bali Hartinah DS, Sitti; Zuhry, Noor; Nugraeni, Christine Dyta; Salim, Gazali; Nurjanah, Nurjanah; Indarjo, Agus; Salim, Nasiatul Aisyah; Mulyani, Mulyani; M.Aslan, La Ode
MALLOMO: Journal of Community Service Vol 4 No 1 (2023): Desember-Mei
Publisher : Universitas Muhammadiyah Sidenreng Rappang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55678/mallomo.v4i1.1179

Pulau Serangan merupakan salah satu destinasi turis di Provinsi Bali yang memiliki keberagaman tradisi dan budaya. Pengembangan pulau ini memiliki keunikan tersendiri yang menyebabkan turis berdatangan untuk menikmati potensi alam, budaya, dan kerajinan tangan. Salah satu daya tarik pariwisata di pulau ini adalah pusat konservasi penyu. Penyu merupakan satwa endemik yang semakin menurun populasinya sehingga semakin terancam punah. Aktivitas pariwisata yang semakin meningkat di Pulau Serangan mengakibatkan peningkatan jumlah sampah plastik, yang menjadi faktor berkurangnya populasi penyu. Pada kegiatan ini dilakukan sosialisasi pada pengunjung Pusat Konservasi Penyu Pulau Serangan mengenai bahaya sampah plastik melalui kampanye dan pembagian stiker agar pengunjung memiliki kesadaran mengenai pengelolaan sampah plastik. Pada kegiatan ini para pengunjung cukup antusias dan memiliki rasa keingintahuan yang tinggi terhadap kaitan antara sampah plastik dan kelansungan hidup penyu laut.

Title

Found 11 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 11 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 11 Documents
Search