DAMPAK PERUBAHAN IKLIM TERHADAP BUDIDAYA UDANG VANAME DI PESISIR KABUPATEN BANYUWANGI, JAWA TIMUR

Perubahan suhu dan curah hujan yang ekstrim tampaknya menjadi faktor yang paling signifikan dalam budidaya udang. Adanya penurunan produksi udang di Jawa Timur dapat terjadi karena terganggunya kualitas air dan faktor lingkungan ekosistem. Penelitian ini bertujuan untuk memberikan informasi area yang rentan yang mempengaruhi sektor budidaya udang vaname di Provinsi Jawa Timur dan Kabupaten Banyuwangi berdasarkan model CMIP5 (model IPSL-CM5A-MR terpilih) untuk strategi adaptasi terhadap perubahan iklim dan untuk mengetahui korelalsi antara parameter iklim dengan produksi udang. Proyeksi model IPSL-CM5A-MR untuk tahun 2020, 2040 dan periode waktu 24 tahun (2018 - 2042) mencakup empat skenario Representatif Concentration Pathway (RCPs), meliputi RCP 2.6, RCP 4.5, RCP 6.0 dan RCP 8.5. Hasil penelitian menggunakan indeks kerentanan menunjukkan bahwa Kabupaten Banyuwangi merupakan daerah paling rentan di Provinsi Jawa Timur. Kelurahan Muncar dan Kelurahan Tegaldlimo merupakan area yang paling rentan di Kabupaten Banyuwangi. Parameter iklim (curah hujan dan suhu) berkorelasi positif dengan data produksi udang vaname di Kabupaten Banyuwangi namun tidak signifikanPerubahan suhu dan curah hujan yang ekstrim tampaknya menjadi faktor yang paling signifikan dalam budidaya udang. Adanya penurunan produksi udang di Jawa Timur dapat terjadi karena terganggunya kualitas air dan faktor lingkungan ekosistem. Penelitian ini bertujuan untuk memberikan informasi area yang rentan yang mempengaruhi sektor budidaya udang vaname di Provinsi Jawa Timur dan Kabupaten Banyuwangi berdasarkan model CMIP5 (model IPSL-CM5A-MR terpilih) untuk strategi adaptasi terhadap perubahan iklim dan untuk mengetahui korelalsi antara parameter iklim dengan produksi udang. Proyeksi model IPSL-CM5A-MR untuk tahun 2020, 2040 dan periode waktu 24 tahun (2018 - 2042) mencakup empat skenario Representatif Concentration Pathway (RCPs), meliputi RCP 2.6, RCP 4.5, RCP 6.0 dan RCP 8.5. Hasil penelitian menggunakan indeks kerentanan menunjukkan bahwa Kabupaten Banyuwangi merupakan daerah paling rentan di Provinsi Jawa Timur. Kelurahan Muncar dan Kelurahan Tegaldlimo merupakan area yang paling rentan di Kabupaten Banyuwangi. Parameter iklim (curah hujan dan suhu) berkorelasi positif dengan data produksi udang vaname di Kabupaten Banyuwangi namun tidak signifika

Landsat 8 Observation of the Internal Solitary Waves in the Lombok Strait

Landsat  8,  Landsat  Data  Continuity  Mission  (LDCM)  satellite,  was  launched  on  11 February 2013 with Operation Land Imager (OLI) sensors. Tis sensor has better radiometric performance than the previous mission, which is quantized in the 12-bit dynamic range due to an increase in the signal-to-noise (SNR) ratio. In this analysis, the spatio-temporal distribution of the propagation of the internal solitary wave (ISW) in the Lombok Strait was extracted from the Landsat 8 images described for the first time.  Tere were 14 ISW events studied for period 2014  -  2015  using  Landsat  8.  Te  manifestations  of  ISW  recorded  on  Landsat  8  images  were then extracted using digitization method to investigate and measure several parameters and ISW distribution in the Lombok Strait. Te estimation results of the average ISW phase velocity in this study are 2.05 ms-1 with the direction of propagation heading north at an average angle of 19.08°. Tis study has shown that Landsat 8 can be used to monitor and analyze several internal wave parameters in the ocean

ESTIMATION OF TIDAL ENERGY DISSIPATION AND DIAPYCNAL DIFFUSIVITY IN THE INDONESIAN SEAS

The Indonesian Seas separating the Indian Ocean from the West Pacific Oceanare representative regions of strong tidal mixing in the world oceans. In the present study,we first carry out numerical simulation of the barotropic tidal elevation field in theIndonesian Seas using horizontally two-dimensional primitive equation model. It is foundthat, to reproduce realistic tidal elevations in the Indonesian Seas, the energy lost by theincoming barotropic tides to internal waves within the Indonesian seas should be taken intoaccount. The numerical experiments show that the model predicted tidal elevations in theIndonesian Seas best fit the observed data when we take into account the baroclinic energyconversion in the Indonesian Seas ~86.1 GW for the M2 tidal constituent and ~134.6 GWfor the major four tidal constituents (M2, S2, K1, O1). For this baroclinic energy conversion,the value of Kñ averaged within the eastern area (Halmahera, Seram, Banda and MalukuSeas), the western area (Makassar and Flores Seas), and the southern area (Lombok Straitand Timor Passage) are estimated to be ~23 × 10-4 m2s-1, ~5 × 10-4 m2s-1, and ~10× 10-4m2s-1, respectively. This value is about 1 order of magnitude more than assumed for theIndonesian Seas in previous ocean general circulation models. We offer this study as awarning against using diapycnal diffusivity just as a tuning parameter to reproduce largescalephenomena

DHA Hydroperoxides as a Potential Inducer of Neuronal Cell Death: a Mitochondrial Dysfunction-Mediated Pathway

During the lipid peroxidation reaction, lipid hydroperoxides are formed as primary products. Several lines of evidence suggest that lipid hydroperoxides can trigger cell death in many cell types, including neurons. In a screening of lipid hydroperoxides which can induce toxicity in neuronal cells, we found docosahexaenoic acid hydroperoxides (DHA-OOH) induced much severe levels of reactive oxygen species generation and cell death in human neuroblastoma SH-SY5Y cells compared to the hydroperoxides of linoleic acid and arachidonic acid. Therefore, we focused on DHA-OOH, and demonstrated that DHA-OOH apparently induced an apoptosis in the neuronal cells through several apoptotic hallmarks including nuclei condensation, DNA fragmentation, poly (ADP-ribose) polymerase cleavage and increased activity of caspase-3. We also found the signaling changes in mitochondria-mediated apoptosis, such as cytochrome c release and increased expression of Bcl-2, as well as a dose-dependent attenuation of mitochondrial membrane potential in the DHA-OOH treated cells. These data indicated DHA hydroperoxide as a potential inducer of apoptosis in human neuroblastoma SH-SY5Y cells, which may be mediated by mitochondria dysfunction pathway

STUDY FOR ESTIMATION OF AIR-SEA C02 GAS TRANSFER BY WAVE BREAKING MODEL USING SATELLITE DATA — ESTIMATION OF THE FRICTION VELOCITY CONSIDERING WAVE EFFECT

The determination of wind friction velocity from satellite-derived wind data will take an important role of key factors for computation of C02 flux transfer. It is necessary for relation between wind speed and wind friction velocity to determine that of relation between nondimensional roughness length and wave age, included with all parameters (wind, wave). In this study, we proposed a new method to estimate u„, which is based on the new relationship between non-dimensional roughness and wave velocity, after considering fetch and wave directionality. Consequently, we obtained the new relationship between friction velocity and wind speed. Using this relationship, we estimated the wave frequency from two methods: 3 per 2 powers law (Toba, 1972) and WAM model (WAMDI, 1988). The results arc compared with the results estimated from Charnock formula (1955) and the above influence of wave effects on the wind stress is also discussed. A new relationship was established to determine CO. exchange coefficient based on whitecap model (Monahan and Spillane 1984), using U|0-u, relationship in North Pacific Ocean, satellite data of NOAA-AVHRR (SST) and DMSP-SSM-I (wind speed) in Oct., Nov., and Dec. 1991. The C02 exchange coefficient estimated by other models (Wanninkhof, 1992; Liss and Merlivat, 1986; Tans et al., 1990) are also compared with these results. The results show the importance of wave breaking effect. Key words: wind waves, friction velocity, C02 exchange coefficient, roughness length, wave age

APPLICATION OF VAN HENGEL AND SPITZER ALGORITHM FOR INFORMATION ON BATHYMETRY EXTRACTION USING LANDSAT DATA

Remote sensing technology provides an opportunity for effective and efficient bathymetry mapping, especially in areas which level of depth changes quickly. Bathymetry information is very useful for hydrographic and shipping safety. Landsat medium resolution satellite imagery can be used for the extraction of bathymetry information. This study aims to extract information from the Landsat bathymetry by using Van Hengel and Spitzer rotation algorithm transformation (1991) in the water of Menjangan Island, Bali. This study shows that Van Hengel and Spitzer rotation algorithm transformation (1991) can be used to extract information on the bathymetry of Menjangan Island. Extraction of bathymetric information generated from Landsat TM imagery data in March 19, 1997 had shown the depth interval of (-0.6) m to (-12.3) m and R2 value of 0.671. While Data LANDSAT ETM + dated June 23, 2000 resulted in depth interval of 0 m to (-19.1) m and R2 value of 0.796. Furthermore, data LANDSAT ETM + dated March 12, 2003 resulted in depth interval of 0 m to (-22.5) m and R2 value of 0.931

Development of the Japanese version of the health‐related quality of life questionnaire for bladder cancer patients using the Bladder Cancer Index: A pilot study

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/151958/1/iju14073.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/151958/2/iju14073_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/151958/3/iju14073-sup-0003-app2.pd

Association of Oxidized Low-Density Lipoprotein in Nonalcoholic Fatty Liver Disease with High-Risk Plaque on Coronary Computed Tomography Angiography: A Matched Case-Control Study

Nonalcoholic fatty liver disease (NAFLD) is a risk factor for the development of atherosclerotic cardiovascular diseases (CVDs), and oxidative stress has been proposed as a shared pathophysiological condition. This study examined whether oxidized low-density lipoprotein (LDL) is involved in the underlying mechanism that links coronary atherosclerosis and NAFLD. This study included 631 patients who underwent coronary computed tomography angiography (CTA) for suspected coronary artery disease. NAFLD was defined on CT images as a liver-to-spleen attenuation ratio of <1.0. Serum-malondialdehyde-modified LDL (MDA-LDL) and coronary CTA findings were analyzed in a propensity-score-matched cohort of patients with NAFLD (n = 150) and those without NAFLD (n = 150). This study analyzed 300 patients (median age, 65 years; 64% men). Patients with NAFLD had higher MDA-LDL levels and a greater presence of CTA-verified high-risk plaques than those without NAFLD. In the multivariate linear regression analysis, MDA-LDL was independently associated with NAFLD (beta = 11.337, p = 0.005) and high-risk plaques (beta = 12.487, p = 0.007). Increased MDA-LDL may be a mediator between NAFLD and high-risk coronary plaque on coronary CTA. Increased oxidative stress in NAFLD, as assessed using MDA-LDL, may be involved in the development of CVDs

Relationship Between Balance Recovery From a Forward Fall and Lower-Limb Rate of Torque Development

The authors examined the relationship between the maximum recoverable lean angle via the tether-release method with early- or late-phase rate of torque development (RTD) and maximum torque of lower-limb muscle groups in 56 young healthy adults. Maximal isometric torque and RTD at the hip, knee, and ankle were recorded. The RTD at 50-ms intervals up to 250 ms from force onset was calculated. The results of a stepwise multiple regression analysis, early RTD for hip flexion, and knee flexion were chosen as predictive variables for the maximum recoverable lean angle. The present study suggests that some of the early RTD in the lower limb muscles, but not the maximum isometric torque, can predict the maximum recoverable lean angle