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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Teknik Industri MARINA CHIMICA ACTA Journal of Oceanography Jurnal Bahan Alam Terbarukan Jurnal Rekayasa Mesin BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Chemistry Indonesian Journal of Chemical Research Tomini Journal of Aquatic Science Entrepreneur : Jurnal Bisnis Manajemen dan Kewirausahaan Khalifa: Journal of Islamic Education International Journal of Agriculture System Journal of Mechanical Engineering and Applied Technology Inspirasi: Jurnal Pengabdian Masyarakat Journal of Architecture, Landscape & Urban Design
Muhammad Lukman
Marine Science Department, Faculty Of Marine Science And Fisheries, University Of Hasanuddin, South Sulawesi, Indonesia.
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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THE EFFECT OF TEMPERATURE AND NITRATE COMPOUND ON GROWTH, BIOMASS AND FREE FATTY ACID CONTENT ON MICROALGAE CULTURE OF Spirulina sp. and Skeletonema sp. Rukminasari, Nita; Lukman, Muhammad; Tambaru, Rahmadi; Inaku, Dwi Fajriyati; Suharto, Suharto
Jurnal Bahan Alam Terbarukan Vol 7, No 1 (2018): June 2018 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v7i1.8513

Abstract

Temperature and availability nutrients played an important role on growth and lipid production of microalgae.  In this study, we examined the effect of increasing suhu and excessed and depleted NO3 on growth rate, biomass and free fatty acid concentration in the Spirulina sp and Skeletonema sp. Two microalgae were culture on Conway and Milne media for 21 days using continuous culture technique.  There were four temperature treatments, such as 28oC, 30oC, 32oC and 34oC and three nutrient treatments, which were control nutrient treatment, without NO3 and  two times NO3 concentrations from control treatments with three replicates for each treatments. Results found that increasing temperature significantly affected on biomass and concentration free fatty acid, meanwhile nutrient treatments affected on growth rate, biomass and concentration of organic Carbon.  In general, increasing temperature was more affected on Spirulina sp in terms of increasing growth rate, biomass and free fatty acid concentration. However, Skeletonema sp was more responsive to  availability of NO3 in the media culture for increasing free fatty acid, and percentage of free fatty acid per dry weight.
Penurunan Jumlah Cacat Dan Biaya Bahan Baku Dengan Metode Responsesponsse Surface Lukman, Muhammad; Firdaus, Ahmad Zubaid; Galih, Rahadian
Jurnal Teknik Industri Vol 14, No 2 (2013): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.44 KB) | DOI: 10.22219/JTIUMM.Vol14.No2.139-145

Abstract

CV.   Indah Cemerlang  is a  company  for building material which  produces paving  stone. The company  often  changes  the raw materials composition which is affected  by  cost  of raw materials. Change of  the raw  materials composition  makes  product quality  lower. Therefore, a study should be conducted in order to identify  control factors  influencing on defect responsse by using Responsse  Surface  method. Responsse surface method used in this research consists of two stages. First stage, called orde 1, is dealing with screening and second stage, called orde 2, is dealing with optimization. The result of orde 1 shows that the raw materials composition influencing on defect responsse are cement volume and gray stone. According to the result of second stage, the experiment is conducted to determine optimal amount of raw materials composition. Optimal amount of the raw materials composition are 20 liters of water, 47 kilograms of cement, 120 kilograms of sand, and 10.45 doses of gray stone, with value of defect responsse 5.08%. Applying proposed composition can decrease cost of raw material by Rp 49,33 per pallet and cost of poor quality by 47.60 per week.
SEBARAN SEDIMEN DASAR MINERAL MAGNETIK DAN MINERAL NON- MAGNETIK DI PERAIRAN PANTAI SLAMARAN KOTA PEKALONGAN Lukman, Muhammad; Admodjo, Warsito; Hariadi, Hariadi
Journal of Oceanography Vol 3, No 1 (2014)
Publisher : Program Studi Oseanografi, Jurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.929 KB)

Abstract

AbstrakPerairan Pantai Slamaran, Kota Pekalongan memilki tingkat sedimentasi yang sangat tinggi yang disebabkan adanya sudetan Sungai Banger dan Sungai Slamaran yang membawa material-material yang berasal dari daratan kearah laut. Tujuan penelitian ini adalah untuk mengetahui sebaran sedimen dasar yang mengandung mineral magnetik dan mineral non- magnetik di perairan Pantai Slamaran, Kota Pekalongan. Penelitian ini dilaksanakan pada tanggal 28 Mei – 11 Juni 2012 di Pantai Slamaran, Kota Pekalongan. Dimulai dari tahap pengambilan data di lapangan kemudian tahap pengolahan data serta analisis data di Laboratorium Geologi Jurusan Ilmu Kelautan Universitas Diponegoro. Data yang digunakan adalah data primer dan data sekunder. Data primer yaitu data gelombang, kelerangan, dan sampel sedimen dasar dan data sekunder meliputi peta LPI Pekalongan Tahun 2000, data angin, dan data arus. Penelitian ini menggunakan  metode deskriptif bersifat eksploratif, pengambilan sampel menggunakan metode sampling purposif. Metode analisa data menggunakan software ArcGIS 9.3. Hasil penelitian didapatkan jenis sedimen dasar yang mendominasi di perairan Slamaran adalah jenis pasir lanauan dan jenis pasir mendominasi pada bagian pantai. Nilai gelombang signifikan (Hs) 0,59m; periode gelombang signifikan (Ts) 3,34s; (Hmaks) 0,89m; (Tmaks) 4,60s; (Tmin) 0,22m dan (Pmin) 2,00s yang menjalar kearah barat, sedangkan kecepatan arus dasar 0,0001m/dt sampai 0,271m/dt kearah utara. Pada Kandungan mineral magnetik dominan pada daerah pantai sedangkan  kandungan mineral non- magnetik dominan pada daerah lepas pantai dikarenakan partikel magnetik memiliki ukuran yang lebih besar daripada non- magnetik. Hasil analisa presentase mineral magnetik dan mineral non-magnetik didapatkan skala butiran 0.3mm-0,5mm memiliki kandungan magnetik terbesar kemudian untuk non- magnetik terdapat pada skala 0,063mm-0,125mm. 
TEMPERATURE AND NITRATE CONCENTRATION EFFECT ON THE ABUNDANCE AND GROWTH RATE OF MELOSIRA SP. Nita Rukminasari; Sharifuddin Andy Omar; Muhammad Lukman
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol 7, No 2 (2021): February 2021
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v7i2.4054

Abstract

Microalgae are one of the natural resources that have high potential as a source of biofuels, one of them is the marine microalgae Melosira sp.. The objective of this study was to determine the effect of increasing temperature and nitrate concentration on the abundance, growth rate, biomass, organic C-content and free fatty acids of Melosira sp.. A Completely Randomized Design was used for this experiment with four temperature treatments and three nitrate concentrations treatments  in microalgae test planting media. The test microalgae were cultured for 21 days, while the abundance of Melosira sp..was carried out every 3rd day, while for other parameters measurements were made at the end of the experiment. The results showed that the increasing in temperature and nitrate concentration in culture media significantly affected the abundance of Melosira sp.. Meanwhile, the results of statistical analysis showed that the increase in temperature and concentration of culture media did not have a significant effect on biomass except at 30°C treatment, the dry weight of Melosira sp. was only significantly different between the nitrate concentrations of 0.0 g/L and 0.4 g/L. For the content of C-organic and free fatty acids generally showed a significant difference between treating temperature and nitrate concentration in the culture media.
ANALYSIS OF DIMETHYLSULFIDE AS BIOGEOCHEMICAL CYCLES SULFUR ON REGIONAL ESTUARY SPERMONDE Rakhmad Armus; Alfian Noor; Ahyar Ahmad; Muhammad Lukman
Marina Chimica Acta Vol. 19 No. 1 (2018): Volume 19, No. 1 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.417 KB) | DOI: 10.20956/mca.v19i1.4208

Abstract

We developed a more accurate method of analysis for low-concentration volatile compounds used for the determination of free dimethylsulfide (DMS) in marine phytoplankton by using solid phase (SPME) gas chromatography - spectrometry Mass of GC-MS and head space method. DMSP, as a product of bacteria degradation has been scientifically recognized to be affected by climate change due to increased in sea surface temperature, and form DMS compunds.. The present study is to determine the DMSP concentration and degradation pathway in the oligotrophic region of Spermonde waters. The spatial and temporal correlation between DMSP degrading bacterial codes and biological potential controls for DMS formation in the open seas was examined using a statistical factorial analysis of variance and regression against the spatial (or distance) gradients of the Spermonde coastal waters, the concentration of chlorophyll-a, and diatom community structures. Seawater chemical properties, chlorophyll-a, and diatom samples were collected from several sites in the Tallo-Makassar river estuary, and the Pangkep river in September 2017 (transitional wet-to-dry-season). The result shows that the concentration of the Domination Index was higher in the transition season of 35.2 to 85.2 μM than in other seasons. The abundance of diatoms during the transition season reached 16,534 plankter / mL.
SURFACE TEMPERATURE DISTRIBUTION ANALYSIS USING REMOTE SENSING SYSTEM IN SPERMONDE ESTUARY Rakhmad Armus; Alfian Noor; Ahyar Ahmad; Muhammad Lukman
Marina Chimica Acta Vol. 19 No. 2 (2018): Volume 19, No. 2 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.556 KB) | DOI: 10.20956/mca.v19i2.5388

Abstract

Research on the phenomenon of climate change on the region Makassar Strait waters that are part of the oceanographic activities that require observation of the sea surface temperature (SST), surface currents and ocean color imagery from satellite imagery. In this case, satellite remote sensing data using Aqua-Modis analyze both visually and raw-surface temperature parameter data in order to study a variety of other related phenomena that take place in the ocean. The existence of satellite imagery data for the observation of parameters and / or oceanographic phenomena will be more profitable in terms of time and cost and high accuracy. The purpose of this study was to review based on the description of the SST analysis using Aqua-Modis image data (non-commercial) and open source software in providing the information cepatdan applicable. Bodies Spermonde been considering the seas is quite unique because it is located right in the path of the current meeting of the Pacific Ocean through the sea of Sulawesi and spacious enough for the continuity of mesoscale oceanographic processes for coverage in the waters Spermonde in (islands) Indonesia
SPATIAL AND TEMPORAL VARIATION OF THE TOTAL SUSPENDED SOLID IN THE SOUTH SULAWESI COASTAL WATERS Waode Rustiah; Alfian Noor; Maming Gaffar; Muhammad Lukman
Marina Chimica Acta Vol. 19 No. 2 (2018): Volume 19, No. 2 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (648.156 KB) | DOI: 10.20956/mca.v19i2.5391

Abstract

Suspended solids are the main ingredients forming precipitates that can inhibit the ability to form organic compounds in coastal and marine waters. This study aims to determine the concentration of Total Suspended Solid (TSS) in coastal and marine waters of the west coast of South Sulawesi collected in different seasons, namely October 2017 (dry season) and March 2018 (rainy season). TSS concentrations generally higher in the rainy season (34-47 ppm) compared to the dry season (10-25 ppm). On location, higher TSS concentrations were obtained in the Tallo river waters, namely 10–47 ppm (28.9 ± 13.4 ppm) compared to locations in Pangkep river waters 14–43 ppm (27.4 ± 11.2 ppm). The results showed that the Total Suspended Solid (TSS) in marine waters and still comply with the limit values set by the Ministry of Environment (MOE).
PLANKTON ABUNDANCE BETWEEN DRY AND RAINY SEASON IN TALLO FRESHWATER AND PANGKEP RIVER Rakhmad Armus; Alfian Noor; Ahyar Ahmad; Muhammad Lukman
Marina Chimica Acta Vol. 20 No. 2 (2019): Volume 20, No. 2 (2019)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.933 KB) | DOI: 10.20956/mca.v20i2.9271

Abstract

Plankton abundance is influenced by seasons, sea surface currents (SSC), nutrients and surface temperature (SST). Is a marine organism has a function to stabilize the surface temperature of the earth by regulating the concentration of Dimetyl sulfide (DMS) due to exposure to direct sunlight. There is the ability of the ocean to regulate warming and to regulate the distribution of water vapor in the atmosphere which is controlled by sea surface temperature. Sampling using the transeck system in September and January represents the rainy season and the dry season which is closest to the Tallo river estuary and the Pangkep river estuary represents the estuary region, towards the coast of the spermonde (Litoral) islands and far from the coast (offshore) from freshwater sources, but the relationship of nutrient entry into estuary areas by sea surface currents (SSC) is still poorly known. The dominant aspect of phytoplankton is determined by the amount of nutrients flowing (runoff) from land to estuary to spermonde waters
RATIO OF NUTRIENT AND DIATOM-DINOFLAGELLATE COMMUNITY IN SPERMONDE WATERS, SOUTH SULAWESI Andriani Nasir; Muhammad Lukman; Ambo Tuwo; . Nurfadilah
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.725 KB) | DOI: 10.29244/jitkt.v7i2.11028

Abstract

Runoff of nutrients (N, P, Si) from the mainland would disrupt the balance of nutrients in the waters resulted in changing microalgae communities composition, especially between diatom and dino-flagellate (Dia/Dino). This study was aimed to analyze the relationship of nutrient ratios (N/P, N/Si, Si/P) in the waters, to the density ratio of the Dia/Dino in the coastal and marine waters of Spermonde archipelago, South Sulawesi, Indonesia, which experience nutrient enrichment. Nutrients and phyto-plankton samples were collected from the coastal waters of Tallo, Maros, Pangkep, and seawaters of Spermonde in three seasons (transition, wet, and dry). The results showed the average value (± stan-dard deviation) of Dia/Dino ratio in the coastal and sea waters is 1422±1742 and 1174±1290 in the transition season; 238±205 and 1039±2264 in the dry season; and 153±270 and 72±71in the rainy season. Meanwhile, in the marine waters the ratio of Dia/Dino ranges between 1 and 9839. The ratio of Dia/Dino was not different significantly (p>0,05) by spatial and temporal, but Dia/Dino ratio was different significantly (p<0,05) on the ratio of nutrients in coastal waters, where the value of N/Si ratio tends to ignite monospesies enrichment diatom (Chaetoceros) with a variant of 70,4%. Keywords: nutrient ratios, diatom, dinoflagellate, coastal, Spermonde
ANALYSIS OF THE SEASONAL IMPACT ON ISOTOPIC BASELINES OF DISSOLVED INORGANIC CARBON (DIC) IN COASTAL WATERS SPERMONDE, SOUTH SULAWESI Wa Ode Rustiah; Alfian Noor; . Maming; Muhammad Lukman
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (437.936 KB) | DOI: 10.29244/jitkt.v11i1.24778

Abstract

Stable carbon isotopes have been commonly used as indicators for assessing environmental changes in aquatic ecosystems. They can be used to study the dynamics of organic matter as for understanding the overall functioning of the ecosystem, the connectivity of estuaries with terrestrial and marine coastal habitats. The objective of this study is determining the seasonal natural effects over isotopic (13C/12C) baselines in monitoring CO2 storage in dissolved inorganic materials in Spermonde waters on the west coast of South Sulawesi to some outermost island. The results show that the stable carbon isotopic of DIC (d13C-DIC) in the wet season varied between -5.36 ‰ and -7.74 ‰. These value are higher than on dry season (-4.34 ‰ to -6.82 ‰). Likewise, DIC concentration in the rainy season ranged between 9.5 mg C/L and 11.7 mg C/L, while in the dry season it varied from 8.5 mg C/L to 9.3 mg C/L. The d13C-DIC and DIC concentrations decreased towards offshore, up to some of the outer islands. Increasing in the d13C-DIC in Spermonde waters indicate that the DIC is most likely enriched by atmospheric CO2(g), which is outnumbered those of aquatic photosynthesis. This study shows that different levels and composition of d13C-DIC stretch along different rivers are attributable to the varying landscapes and quality of organic matters.
Co-Authors . Maming . Nurfadilah Abdelazeez, Samy Abdul Hamid Abdul Haris Ahmad Zubaid Firdaus, Ahmad Zubaid Ahyar Ahmad Ahyar Ahmad Alfia, Siti Alfian Noor Alfian Noor Alfian Noor Alfian Noor Alfian Noor Alfian Noor Alfian Noor Alhussian, Hitham Ambo Tuwo Andi Tenri Fitriyah Andriani Nasir Armus, Rakhmad Asri, Sarwi Assyifa, Assyifa Aziz, Norshakirah Baharuddin Baharuddin Dwi Fajriyati Inaku, Dwi Fajriyati Hariadi Hariadi Hidayat, Hanif Kuswoyo, Indra lukmam, m.h.d Maming Gaffar Maming Maming Maming Maming Muria , Muria Nailul Ulum, Muhammad Showi Ningsih, Surtiya Nita Rukminasari Nurfadilah Nurfadilah Nurfadillah Nurfadillah Obeid, Abdul Rahman Oriana Paramita Dewi Patel, Ahmed Rahadian Galih, Rahadian Rahmadi Tambaru Rahmat, Sonia Arif Ratih Puspita Dewi, Ratih Puspita Rustiah, Wa Ode Sharifuddin Andy Omar Suharto Suharto Syabrina, Muhammad Warsito Admodjo Wenti Ayu Sunarjo