IOP Conference Series: Earth and Environmental Science

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ISSN / EISSN : 17551307 / 17551315
Current Publisher: IOP Publishing (10.1088)
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Latest articles in this journal

Nurhasballah, A Rizki, Suwarno
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012028

Abstract:The gastropod is one class of the Mollusca phylum using the abdomen as the leg. Generally gastropods are crawling on the bottom of the waters and submerged in the mud and are often called epifauna and infauna gastropods. Research on diversity of epifauna gastropods in the littoral zone has been done in Mesjid Raya, Aceh Besar District. This research aims to determine the diversity of gastropod species based on the substrate types (coral reef, muddy and sandy). The exploratory method by using transect line was used in this study. In each substrate, a line transect was drawn for five transects with a length of 50 m. The transects were started from the tidal line. The distance between transects were 50 m. Each transect was made in 10 sampling plots measuring lm × lm, and the distance between plots was 5m. The gastropods were collected directly and without damaging the substrates. The epifauna gastropods obtained was put into a sample bottle and preserved using 70% alcohol. The results showed that 23 families and 54 species of epifauna gastropods were identified. The number of species of gstropods was found in the sandy and muddy substrate more than in the sandy and corral reef substrate, but the highest diversity index was found in the sandy substrate, meanwhile the lowest diversity was found in the coral reef substrate. The highest species density was obtained on Rhinoclavis aspera.
Saiful, A Gani, A Ulim
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012037

Abstract:Nowadays, changes in the quality of surface water are becoming a serious problem to support clean water for the community. Aceh Jaya district as abundant natural resources that need to be processed and utilized, such as gold mining, agriculture, palm oil mills, and others. These activities can provide economic added value and also decrease the quality of the environment, such as changes in the quality of surface water. Surface water quality analysis has been studied to determine the different ion concentrations in the waters on the river Kr. Teunom and the river Kr. Ligan of Aceh Jaya regency. The results of the analysis of the water quality of the river show were physically the water quality of the river Kr. Teunom and Kr. Ligands are still following quality standards. Based on chemical parameters, the water quality of the river Kr. Teunom and Kr. Ligands, in general, are found in a low level of heavy metals such as Hg, Mn, Pb, As, Cd, and Cr in water. Cyanide levels in all samples of the river water are following the quality standard PPRI No. 82 of 2001 Class I and regulation of the Minister of Health Number: 492/Menkes/Per/IV/2010 concerning drinking water quality requirements. The presence of mercury ions in all river water must be a concern because mercury can accumulate in the tissues of aquatic organisms for a long time.
E Safitri, T Tarmizi, M Ramli, S Wahyuni, M Ikhwan
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012029

Abstract:This article discusses the mathematical model of changes in the number of cancer cells as a result of the intervention. Here the effect of combination treatment, in the form of virus injection and chemotherapy on tumor cells, is presented in detail. There are two different tumor cells, uninfected tumor cells and infected tumor cells. Model simulations with different parameters were performed for 700 d. The initial values for the population of virus-infected tumor cells are divided into two categories. The number of tumor cells injected with the virus is ½ (half) and all tumor cells that are not infected. Based on the simulation results, it was concluded that the more the number of tumor cells injected with the virus, the faster the decrease in the number of tumor cell populations. It was also concluded that the reduced population of tumor cells reduces the amount of chemotherapy concentration used.
M Zainal, M Yanis, D Darisma, Marwan, N Ismail
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012034

Abstract:Geophysical surveys have been conducted using magnetic in the archaeological site of Kuta Lubok fortress, Aceh Besar. The fortress was built in 13th century by the Lamuri Sultanate in the northern part Aceh coast. To map an estimated area of archaeological objects, 420 stations have been measured. The data were measured by 21 profiles across of the area with the length of profiles vary from 40 to 60 m. To get a complete resolution, data is taken with a distance of 20 m between lines and a distance of 5 m between stations. From the total magnetic field map that has reduced to the poles, the anomaly is generally able to delineate buried building sites. Then based on Euler deconvolution analysis, the structure of the fortress building can be seen using a 5-meter depth level. But a clearer structure is seen in the use of 10 m in depth. Based on the interpretation of the two tolerance layers it can be concluded that the Kuta Lubok fortress was found stretching parallel to the line along the 400 m to the east of the fort building which is still intact.
Nizamuddin, Ardiansyah, H Sofyan, Muzailin, W A Aldika
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012042

Abstract:The development of Information and Communication Technology (ICT) related to web-based services such as portals, web services and databases (DB) services for searching, retrieving, disseminating and sharing information has also happened in the field of Geographic Information Systems (GIS) through web-based GIS Services. In GIS, the portal is replaced by Geoportal, Web Service by Web Mapping Service (WMS) and Web Feature Service (WFS) while DB Services is replaced by Geographic Database (GeoDB) services. Web based GIS services can be classified as Geoportal, WMS, WFS and GeoDB Services. This research developed a prototype of web-based GIS services for the management of Geographic Information related to disaster management. There are several techniques for developing GIS based web services such as using Content Management Systems for GIS, namely OpenGeo Suite, GeoNode, and ArcGIS based GIS Services. This research focuses on Web-based GIS Services with the ArcGIS platform. The prototype of Web-based GIS Services was built focusing on Geographic information in disaster management cycles such as recovery (rehabilitation and reconstruction), prevention (mitigation), preparedness and emergency response periods.
I Tanjung, S Fonna, S Huzni
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012022

I Ismail, Ismaturrahmi, Zakaria, Zulfalina, Z Jalil, S H Fadzullah
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012013

Abstract:In this study, the composite made of rice straw fiber and polypropylene as the adhesive has been produced. The mechanical properties (modulus of rupture, modulus of elasticity, compressive strength) and physical properties (density and thickness swelling) of composite samples have been examined for various compositions of rice straw fibers. The highest modulus of rupture of our composite is found to be 113 kgf/cm2 obtained at the composition of rice straw fiber 40 wt. % and polypropylene 60 wt. %. The highest modulus of elasticity of our composite is 3.5×104 kgf/cm2 obtained at the composition of rice straw fiber 30 wt. % and polypropylene 70 wt. %. The modulus of elasticity tends to decline when the composition of rice straw is increased. The highest compressive strength and density are 8.9 MPa and 0.6 g/cm3, respectively, which are obtained at the formation of rice straw 60 wt. % and polypropylene 40 wt. %. Both compressive strength and density tend to increase when the composition of rice straw fiber is increased. The thickness swelling of the sample was obtained in the range of 0.5 to 1.0 %. Our composites (for all rice straw fiber compositions) have met Indonesian National Standard requirements for particleboard. Based on our results, we recommend producing a composite of rice straw fiber and polypropylene adhesive with an arrangement of 60 wt. % rice straw fiber and 40 wt. % polypropylene.
Rahayu, S Ningsih, F G Nehru, U Amna, Halimatussakdiah
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012024

M Rizal, N Ismail, M Yanis, Muzakir, M S Surbakti
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012036

Abstract:Aceh is the region that some parts of the Sumatran Fault System (GSF) pass through. The existence of faults has implications for earthquake events. To understand the impact of seismic activities that occur along the fault, it is necessary to do fault mapping and geometry modelling. In this study, magnetotelluric geophysical methods were used to describe 2D resistivity structures in the northern Sumatran. A geophysical survey using magnetotelluric method was done to image 2D resistivity model along the northern part of the fault. The measurement was carried out two lines, with a length of the profile is 92 km and 114 km, consisting of 14 measurement points across the fault, with distances between tracks ranging from 10-15 km. 2D resistivity models were generated by using the Reduce Basic Occam (REBOCC) code. From the resulted model, it can be interpreted as indications of the existence of the Aceh Segment and Segment Seulimeum Faults. In-line C, there are two locations indicated by faults, namely Saree area associated with the Seulimeum segment and the Jantho area associated with the Aceh segment and line D in the geographic area is associated with the Aceh segment. From the resulted model, the Sumatran Fault in the northern part of Aceh was divided into two segments as shown in the model.
E Huda, Rahmi, Khairan
IOP Conference Series: Earth and Environmental Science, Volume 364; doi:10.1088/1755-1315/364/1/012021

Abstract:The preparation and characterization of cellulose acetate from cotton was conducted in this study. Cotton was hydrolyzed using various concentrations of sulfuric acid (10, 20, 30 and 40%). The bleaching process was performed by using H2O2 solution. The acetylation process was conducted using acetic acid solution. The obtained cellulose acetate was then characterized using Fourier Transform Infrared Spectroscopy (FTIR) in order to observe the functional groups, Scanning Electron Microscopy (SEM) to examine the surface morphology and X-Ray Diffraction (XRD) to observe the crystallinity of cellulose acetate. The results of FTIR analysis confirmed the formation of cellulose acetate. SEM images showed the irregular sizes of cellulose acetate. XRD patterns exhibited that the acetylation process increased the crystallinity of cellulose.