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Articles 200 Documents

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Potential Changes of Water Spinach (Ipomoea aquatica Forsk) Root’s Cell Membrane as an Indicator of Environmental Pollution of Waste Water Siti Jazimah Iswarin
Natural B, Journal of Health and Environmental Sciences Vol 1, No 1 (2011)
Publisher : Natural B, Journal of Health and Environmental Sciences

This research is to study the potential change of water spinach root cell membrane using various concentration of Pb ions in 20, 40, 60, 80, and 100ppm using water which come from irrigating rice field at three locations. Pb ions in water and water spinach are specified by Atom Spectrophotometer Spectrophotometer. The membrane potential change is regression determined. From the graph it is shown that the percentage change in membrane potential increases by Pb concentration. At the edge of the rice field, potential of water changes about (18±2) %, at 25 m from the edge, potential changes about (6±4) %, at 50 m from the edge, potential changes about (38±12) %. From this data, Pb2+ is 35.8 ppm (first location), 0 ppm (second location), and 135.3 ppm (third location). Pb2+ concentration calculated using AAS are 0.045 ppm (first location), 0.010 ppm (second location), and 0.025 (third location). In water spinach there are: Pb2 + / ppm; 3.0; 0.9; 5.6. The membrane potential is affected by the ion solution. The higher the pollution, the higher the membrane potential will be. Increasing the type of substance also increases the membrane potential changes that are sensitive to Pb ions. Based on this case the potential change of cell membrane of root of water spinach can be used as an indicator of pollution.

Local Fault Line Tracing in Sri Mulyo Village, Dampit Sub District, Malang Regency Based on Geophysical Data Wasis Wasis; Sunaryo Sunaryo; Adi Susilo
Natural B, Journal of Health and Environmental Sciences Vol 1, No 1 (2011)
Publisher : Natural B, Journal of Health and Environmental Sciences

A research has been conducted for searching local fault at Sri Mulyo Village, Malang Regency, to get the physical parameters of 3-dimension fault, which include depth, width, length, and direction. The research is based on the preliminary research that results geological data interpretation, gravity, and outcrops. The survey used resistivity parameter by applying pseudo-depth section configuration (4 electrodes). Data processing and interpretation using inverse method. By combining every pseudo depth section, 3-dimension physical parameters will be acquired square error is 2.51x10-27.

Design of CO2 Gas Measuring System Arinto Yudi Ponco Wardoyo; Setyawan Purnomo Sakti; Didik Rahadi Santoso
Natural B, Journal of Health and Environmental Sciences Vol 1, No 1 (2011)
Publisher : Natural B, Journal of Health and Environmental Sciences

Carbon dioxide (CO2) has been known well as a contributor gas for the global warming. Regarding the impact, the measurement of the CO2concentration in the air is very important for the assessment. This paper presents the design of a CO2 instrument built by using the components that are available in the market. The instrument contains a CO2 sensor, an interfacing system, and a computer. The test showed that the instrument worked well. It could be used to measure a CO2 concentration on line and in real time.

HIV/AIDS Dynamics Epidemic Analysis Through Age Group and Internal Competition Influence Marsudi Marsudi; Kwardiniya Andawaningtyas
Natural B, Journal of Health and Environmental Sciences Vol 1, No 1 (2011)
Publisher : Natural B, Journal of Health and Environmental Sciences

Transmission of HIV/AIDS in Indonesia has potential rounding into very hard. How situation of HIV/AIDS epidemics in Indonesia in future still is unclear. This research aims to analyze of HIV/AIDS epidemics dynamics with influence of age group and internal competition through the simple mathematics model. The SI compartment model is obtained by translating mechanism spreading of disease to be presented in the form of system of nonlinear differential equations. The model parameters obtained by estimation use data of HIV/AIDS in Indonesia from relevant literatures. The local and global stability for the equilibrium point is described use analysis of eigenvalues of Jacobian matrix and Lyapunov-LaSalle’s invariant principle. For the case of data of HIV/AIDS in Indonesia 2007, threshold values of infected reproduced ratio, R0= 0.000035 susceptible reproduced ratio, R1= 100.60235 and infection contact rate, R2=3.50192 The HIV/AIDS dynamics model with two age groups and internal competition has a unique disease-free equilibrium point. The disease-free equilibrium point E0*= (34258263.6455834, 0, 0) is locally asymptotically stable and global unstable.

Determining Effective Dose on Computed Tomography Scan (CT SCAN) in Head Scanning Firdi Yuana; Kusharto Kusno; Achmad Hidayat
Natural B, Journal of Health and Environmental Sciences Vol 1, No 1 (2011)
Publisher : Natural B, Journal of Health and Environmental Sciences

Computed Tomography Scan (CT scan) is a diagnostic tool that has very high information. CT scan image is the result of a computer reconstruction of X-ray images. CT scans are widely used to diagnose the disease in and the most commonly used is a CT scan of the head. Impact of CT scan radiation causes direct effects and effects for the patient further. This study aims to determine the effective dose in CT scan of the head at the hospital dr. Scan Soepraoen with Impact software in accordance with the International Commission of Radiological Protection (ICRP). From the results of research conducted on 100 patients showed that the CT Scan Head Dose Length Product (DLP) male patients on average larger of 576 mgy / cm when compared with female patients DLP is 506 mgy / cm. The occurrence of this difference is influenced by the length of the exposure area in male patients on average larger than female patients. There are differences in the calculation of effective dose using ICRP Impact Scan for 103 and ICRP 60. To obtain the value of ICRP 103 1.20 mSv to 1.40 mSv, while for the ICRP 60 values obtained 1.20 mSv. These differences ranged from 0% to 16.7%. This is because the ICRP organ weighting factor 103 larger than the ICRO 60. In addition, the ICRP 60 value Dose Limit (NDB) was not reckoned with the dose derived from medical activity. Difference occur in the calculation of the value of effective dose using ICRP Impact Scan for 103 and ICRP 60. To obtain the value of ICRP 103 1.20 mSv to 1.40 mSv, while for the ICRP 60 values obtained 1.20 mSv. These differences ranged from 0% to 16.7%. This is because the ICRP organ weighting factor 103 greater than the ICRP 60. The results of this study obtained the value of effective dose CT scan of the head in accordance with international standards. This research is also a step synergistic cooperation between the hospitals with UB's Department of Physics.

Antagonist Mold Exploration of Phytophthora spp. Pathogen on Apple Plant Nugrahani, Meisarina; Suharjono, Suharjono; Endarto, Otto
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

The attack of Phytophthora spp. caused the descrease of apple crops production up to 90 %. Some antagonist mold species are able to inhibit the growth of Phytophthora pathogens onapple crops. The objectives of this research were to identifify and to study the potency of antagonist mold for inhibite the growth of Phytophthora spp. pathogens on apple crops. The Phytophthora spp. were isolated using baiting method with apple fruitÂ while antagonist molds were isolated by dilution method from soil sample of apple plantation. The inhibition assay of antagonist molds against Phytophthora was carried out by dual culture method. The isolated both of Phytophthora spp. and antagonist mold isolates were identified based on phenotype characters. The research result showed six molds namely Trichoderma sp.1, Trichoderma sp.4, Trichoderma sp.6, Aspergillus sp.2, Aspergillus sp.3 and Penicillium sp.1 which were antagonist on the Phytophthora pathogens onapple crops. Among the antagonist mold species, Trichoderma sp.6 had the highest inhibitory potency (62.95 %) while Penicillium sp.1 had the lowest inhibitory potency (28.82 %) against the growth of Phytophthora.Â

Ethnobotany of Medicinal Plants in Bromo Tengger Tribe Area, Bromo Tengger Semeru National Park Serafinah Indriyani Indriyani; Jati Batoro; Gustini Ekowati
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

The research on use of various plants for medical purposes was undertaken in Tengger tribe area, Bromo Tengger Semeru National Park (BTSNP). The objectives of the research were to give information about species and potency of medicinal plants. Ethno-direct sampling was done through directly or semi-structural interview to the ordinary peoples, traditional leader and traditional therapist. The result of study showed that there were 98 species of medicinal plants that used by Tengger purwoceng (Pimpinella pruatjan), krangean (Abrus laevigatus), adas (Foeniculum vulgare), kayu ampet (Astronia macrophylla), pulosari (Alyxia reinwardtii), pronojiwo (Euchresta horsfieldii), sempretan, dringu (Acorus calamus) dan jamur impes were endemic grow in BTSNP. Tengger tribe did not cultivate the medicinal plants by themselves but seeking it in BTSNP forest.

Antimalarial Activity (Plasmodium falciparum 3D7) from Sea Sponge Acanthella sp. faidzil Ikram; Asep Awaludin Prihanto; Choiriyatun Hanifah; Muhammad Iqbal
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

The objective of the research was to get the bioactive candidates from marine sponge Acanthella sp. for anti multi resistant malaria. The first Research was conducted with isolating the active compounds of Acanthella sp. In vitro antimalarial test against Plasmodium falciparum 3D7 was done with several concentrations with positive control using chloroquinon the quantification of the Scizon inhibition was performed with blood staining. Afterward, the infected erythrocytes per 1000 erythrocytes was calculated. IC50 was assayed with probit analysis. The result indicated that all four active fractions showed inhibition on growth of P. Falciparum with different value on IC50. The best fraction is confirmed by fraction B with IC50 of 0.013 ppm.

Avalanche Potential Analysis using Resistivity Method and USLE Method on Ranu Pani Area, Senduro Sub-district of Lumajang Regency Siswo Purnomo; Sunaryo Sunaryo; Luchman Hakim
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Has done research in the Ranu Pani area is one of the area where landslides have its potentiality, due to its location on the edge of the mountains where the soil is clay, slightly, sandy and has a very high fertility rates. One of the methods used to analyze landslide potential is using USLE (Universal Soil Loss Equation). In addition, the resistivity method with dipole-dipole configuration is also used to determine the structure of the soil and slip areas in the hills in the area Ranu Pani. Debris flow obtained from calculations using the USLE method in the second trajectory is equal to 796.5 tons/year, and the third trajectory is equal to 291.506 tons/year. According to the classification level of erosion, Ranu Pani area is an area with very dangerous level of erosion hazard, because the value of debris flow is more than 180 tons/year. With the high value of debris flow erosion, causing higher sedimentation of the lake, because the Ranu Pani lake accommodate most of the debris flow erosion of the hills around it.

Earthquake Characteristics of Mount Semeru Eruption, East Java Year 2009 Cholisina Anik Perwita; Sukir Maryanto; Agus Budianto
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Type of eruption during the year 2009 can be classified into three types. Type I is a visual explosion that manifested by the eruption of contain volcanic material. Type II is the eruption of the manifestated by fog. Type III is the eruption that occurred during lava dome growth. Spectral and hypocentre analysis has been done used four seismic stations Kepolo (KPL), Leker (LEK), Tretes (TRS) and Besuk Bang (BES). From the analysis found that the correlation between visual eruption and frequency indicates that the seismic eruptions have type I has a frequency 0.87 to 3.8 Hz frequency, seismic eruption of type II has a frequency 0.87 to 2.64 Hz frequency, while the seismic eruptions type III has a frequency 1.06 to 2.73 Hz. Result of study shows hypocenter is located at a depth of 0.90-1.47 km below the crater, interpreted as shallow magma pockets. Described based on the seismicity of 2009. Activities eruption caused by changes of pressure in deep and shallow magma pockets. The eruption process is more controlled by increase of pressure in the shallow magma pockets

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