Searching for ?_1_3 at Daya Bay

International Nuclear Information System (INIS)

Giedt, Joel; Napolitano, James

2015-01-01

An experiment has been carried out by the Daya Bay Collaboration to measure the neutrino mixing angle θ_1_3. In addition, the grant has supported research into lattice field theory beyond the standard model.

Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup

Science.gov (United States)

Hayes, A. C.; Jungman, Gerard; McCutchan, E. A.; Sonzogni, A. A.; Garvey, G. T.; Wang, X. B.

2018-01-01

We investigate the recent Daya Bay results on the changes in the antineutrino flux and spectrum with the burnup of the reactor fuel. We find that the discrepancy between current model predictions and the Daya Bay results can be traced to the original measured U 235 /Pu 239 ratio of the fission β spectra that were used as a base for the expected antineutrino fluxes. An analysis of the antineutrino spectra that is based on a summation over all fission fragment β decays, using nuclear database input, explains all of the features seen in the Daya Bay evolution data. However, this summation method still allows for an anomaly. We conclude that there is currently not enough information to use the antineutrino flux changes to rule out the possible existence of sterile neutrinos.

Core power distribution measurement and data processing in Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Zhang Hong

1997-01-01

For the first time in China, Daya Bay Nuclear Power Station applied the advanced technology of worldwide commercial pressurized reactors to the in-core detectors, the leading excore six-chamber instrumentation for precise axial power distribution, and the related data processing. Described in this article are the neutron flux measurement in Daya Bay Nuclear Power Station, and the detailed data processing

New and Improved Results from Daya Bay

CERN Multimedia

CERN. Geneva

2017-01-01

Despite the great progress achieved in the last decades, neutrinos remain among the least understood fundamental particles to have been experimentally observed. The Daya Bay Reactor Neutrino Experiment consists of eight identically designed detectors placed underground at different baselines from three groups of nuclear reactors in China, a configuration that is ideally suited for studying the properties of these elusive particles. In this talk I will review the improved results released last summer by the Daya Bay collaboration. These results include (i) a precision measurement of the θ13 mixing angle and the effective mass splitting in the electron antineutrino disappearance channel with a dataset comprising more than 2.5 million antineutrino interactions, (ii) a high-statistics measurement of the absolute flux and spectrum of reactor-produced electron antineutrinos, and (iii) a search for light sterile neutrino mixing performed with more than three times the statistics of the previous result. I w...

Searching for θ₁₃ at Daya Bay

Energy Technology Data Exchange (ETDEWEB)

Giedt, Joel [Rensselaer Polytechnic Inst., Troy, NY (United States); Napolitano, James [Temple Univ., Philadelphia, PA (United States)

2015-06-08

An experiment has been carried out by the Daya Bay Collaboration to measure the neutrino mixing angle θ₁₃. In addition, the grant has supported research into lattice field theory beyond the standard model.

Supervision monitoring for radiation environment around Daya Bay and Lingao nuclear power stations

International Nuclear Information System (INIS)

Huang Naiming; Chen Zhidong; Song Haiqing; Deng Fei; Lin Qing; Huang Nairong; Zhou Ruidong; Mo Guanghua; Li Lingjuan; Liu Ying; Li Qiaoqin; Lai Liming; Zhou Xue

2004-01-01

This paper systematically introduces the supervision monitoring for radiation environment around the Guangdong Daya Bay and Ling Ao nuclear power station by the Guangdong Environmental Radiation Research and Monitoring Center. It includes the monitoring plan, methods, quality assurance, main results and conclusions. The results show that: (1) The gas discharge have not caused any detectable impacts to the terrestrial and atmospheric environment since their operation; (2) 110m Ag could only be detected in seawater in the West Daya Bay in 1995 and 1997 and in sediments in 1997. The maximum annual average in seawater was 3.1 Bq/m 3 , annual average of 110m Ag in sediments was 1.0 Bq/kg(dry). But it was always detectable in pearl oyster, gulfweed and cuttlefish in the West Daya Bay. The 110m Ag concentrations in halobios were relatively higher in 1994, 1996 and 1997. The maximum concentrations in pearl oyster, gulfweed and cuttlefish were 2.2, 1.7 and 5.8 Bq/kg (fresh) respectively. It has significantly decreased with decreasing discharge from the stations since 1997. (3) 137 Cs could be detected in almost all seawater samples in the West Daya Bay and the concentration were relatively higher from 1994-1998. The maximum annual average was laid in 1995 and it was 4.6 Bq/m 3 . After 1999, its concentration ranged in the background level. The concentrations in other marine samples were extremely low and changed in the range of the background. (4) 3 H in seawater in the West Daya Bay would go up as a pulse soon after 3 H discharge from the station and would go down to the background after 3-5 days. The annual average of monitoring results were between 0.8-3.4 Bq/L

Latest Results from the Daya Bay Reactor Neutrino Experiment

CERN Multimedia

CERN. Geneva

2014-01-01

Among all the fundamental particles that have been experimentally observed, neutrinos remain one of the least understood. The Daya Bay Reactor Neutrino Experiment in China consists of eight identical detectors placed underground at different baselines from three groups of nuclear reactors, a configuration that is ideally suited for studying the properties of these elusive particles. This talk will present three sets of results that have just recently been released by the Daya Bay Collaboration: (i) a precision measurement of the oscillation parameters that drive the disappearance of electron antineutrinos at short baselines, (ii) a search for sterile neutrino mixing, and (iii) a high-statistics determination of the absolute flux and spectrum of reactor-produced electron antineutrinos. All of these results extend the limits of our knowledge in their respective areas and thus shed new light on neutrinos and the physics that surround them.

Daya Bay Antineutrino Detector Gas System

OpenAIRE

Band, H. R.; Cherwinka, J. J.; Chu, M-C.; Heeger, K. M.; Kwok, M. W.; Shih, K.; Wise, T.; Xiao, Q.

2012-01-01

The Daya Bay Antineutrino Detector gas system is designed to protect the liquid scintillator targets of the antineutrino detectors against degradation and contamination from exposure to ambient laboratory air. The gas system is also used to monitor the leak tightness of the antineutrino detector assembly. The cover gas system constantly flushes the gas volumes above the liquid scintillator with dry nitrogen to minimize oxidation of the scintillator over the five year lifetime of the experimen...

Radioactive source management in Daya Bay NPP

International Nuclear Information System (INIS)

Mao Chun Yang

2000-01-01

'Small sources causes big accidents' had occurred worldwide many times. Radioactive source management in Nuclear Power Plant in very important for its safety record. This paper introduces the way and experience of radioactive source management in Daya Bay NPP from aspects of clarifying the responsibilities, centralizing the management of high radioactivity sources, work process management and experience feedback etc. (author)

Anomalous Ba/Ca signals associated with low temperature stresses in Porites corals from Daya Bay, northern South China Sea

Institute of Scientific and Technical Information of China (English)

Tianran Chen; Kefu Yu; Shu Li; Tegu Chen; Qi Shi

2011-01-01

Barium to calcium (Ba/Ca) ratio in corals has been considered as a useful geochemical proxy for upwelling,river flood and other oceanic processes.However,recent studies indicated that additional environmental or biological factors can influence the incorporation of Ba into coral skeletons.In this study,Ba/Ca ratios of two Porites corals collected from Daya Bay,northern South China Sea were analyzed.Ba/Ca signals in the two corals were 'anomalous' in comparison with Ba behaviors seen in other near-shore corals influenced by upwelling or riverine runoff.Our Ba/Ca profiles displayed similar and remarkable patterns characterized by low and randomly fluctuating background signals periodically interrupted by sharp and large synchronous peaks,clearly indicating an environmental forcing.Further analysis indicated that the Ba/Ca profiles were not correlated with previously claimed environmental factors such as precipitation,coastal upwelling,anthropogenic activities or phytoplankton blooms in other areas.The maxima of Ba/Ca appeared to occur in the period of Sr/Ca maxima,coinciding with the winter minimum temperatures,which suggests that the anomalous high Ba/Ca signals were related to winter-time low sea surface temperature.We speculated that the Ba/Ca peaks in corals of the Daya Bay were most likely the results of enrichment of Ba-rich particles in their skeletons when coral polyps retracted under the stresses of anomalous winter low temperatures.In this case,Ba/Ca ratio in relatively high-latitude corals can be a potential proxy for tracing the low temperature stress.

Variation of phytoplankton biomass and primary production in Daya Bay during spring and summer

International Nuclear Information System (INIS)

Song Xingyu; Huang Liangmin; Zhang Jianlin; Huang, Xiaoping; Zhang Junbin; Yin Jianqiang; Tan Yehui; Liu Sheng

2004-01-01

Environmental factors, phytoplankton biomass (Chl a) and primary production of two water areas in Daya Bay (Dapeng'ao Bay and Aotou Bay) were investigated during the transition period from spring to summer. Chl a ranged from 3.20 to 13.62 and 13.43 to 26.49 mg m -3 in Dapeng'ao Bay and Aotou Bay respectively, if data obtained during red tides are excluded. Primary production varied between 239.7 and 1001.4 mgC m -2 d -1 in Dapeng'ao Bay. The regional distribution of Chl a and primary production were mostly consistent from spring to summer in both bays. Seasonal transition characters have been found in Daya Bay from spring to summer, including high values of DO, nitrate and silicate. Size structures of phytoplankton and its primary production do not change very much from spring to summer, with micro-phytoplankton dominating and contributing about 50% of the whole. In Daya Bay, phytoplankton is limited by nitrogen in spring, and by phosphate in summer. Artificial impacts are evident from high temperature effluent from nuclear power stations, aquaculture and sewage. During the investigation, a red tide occurred in Aotou Bay, with a maximum Chl a of 103.23 mg m -3 at surface and primary production of 2721.9 mgC m -2 d -1 in the red tide center. Raised water temperature and nutrient supply from land-sources help to stimulate annual red tides

Development and application of probabilistic safety assessment PSA in Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Huang Weigang; Chen Jiefei; Guo Jianbing; Zhen Wei

2005-01-01

This paper discusses the development and application of Level 1 PSA used for safety review, risk monitoring and on line maintenance of the nuclear power plant. PSA development includes the analysis of event tree, fault tree, FMEA, PSA quantification and the equipment reliability database. We have collected and processed the reliability data of external power source, the equipment reliability data and the initial event frequency. The thermal-hydraulics analysis of some important events and accidents, human factor analysis, and the calculation of human error probability have been made. During the development of event trees and fault trees, the effect of some support systems such as compressed air distribution system, ventilation system and electrical system have been taken into account. The system manuals, operation procedures and emergency operating procedures of Daya Bay NPP are referred to in this project. The operators of the NPP were involved in the establishment of all event trees and fault trees analysis. Furthermore, we have accepted the suggestion of IAEA experts, completed the logic chart of initial events to the initial events analysis of Daya Bay NPP, and optimized the code system of PSA model again. Together with the development of the reliability database, by absorbing the advanced experience of EDF, we have gained the reports about equipment's classifying, function and experience feedback information of Daya Bay NPP. According to the quantitative calculation of the latest Level 1 PSA Model of Daya Bay NPP, the results of Core Damage Frequency (CDF) is: CDF = 2.13E-5/reactor . year. The latest PSA Model of Daya Bay NPP includes: 1) 12 sorts of initial events, 67 sub-initial events, 70 fault trees; 2) 25 nuclear safety related systems were developed by fault trees and FMEA ; 3) 2609 fault tree logic gates; 4) 2146 basic events; 5) 680 core damage accident sequences. (authors)

Speciation of Metals and Assessment of Contamination in Surface Sediments from Daya Bay, South China Sea

Directory of Open Access Journals (Sweden)

Jie Yang

2014-12-01

Full Text Available The contents, speciation, source factors and potential ecological risks of the selected metals (Cr, Ni, Cu, Pb, Zn, Cd and As were analyzed in surface sediments from Daya Bay (DYB. The results show that, with the exception of Pb, metal concentrations have decreased at all sites over the past decade. The distribution features of these concentrations represent a ring shape that descends from shore to bay by varying degrees. Speciation analysis showed that Cr, Ni, Cu, Zn and As exist mainly in the residual fraction and, thus, are of low bioavailability, while Cd and Pb were found to be abundant in the non-residual fraction and, thus, have high potential mobility. The ratio of heavy metals in non-residual form in descending order is Pb (78.83%, Cd (78.65%, Cu (48.54%, Zn (48.10%, Ni (38.31%, Cr (28.43% and As (27.76%. The ratio of Pb content is the highest, meaning the highest mobility of Pb. The metals’ potential ecological risks to the environment were also assessed using the methods of the mean effect range-median quotient and the criteria of risk assessment code. The results showed that Cd presents the highest risk, and Pb and Cu are generally considered to be medium risks in the sub-basins of Daya Bay. The principal component analysis (PCA revealed that natural coastal weathering and erosion of rock caused the highest input, followed by mariculture and industrial wastewater and, finally, domestic sewage discharge.

Daya Bay PWRs will be state-of-the-art

International Nuclear Information System (INIS)

Anon.

1991-01-01

Preparations for commissioning and startup of the Daya Bay nuclear plant in Guangdong, China, have been underway for some time. The project which incorporates two imported French 900 MWe Pressurized Water Reactors, represents a major technology transfer effort between the Chinese and European contractors, resulting in the highest standards of quality. (author)

A supervision on stretch out mode of Guangdong Daya Bay NPP

International Nuclear Information System (INIS)

Zhou Hong; Chai Guohan; Dong Xiuchen; Mao Haiyun

2004-01-01

The supervision of stretch out mode in the Guangdong Daya Bay nuclear power plant is described. It is also discussed some problems and suggestions of supervision in the new fields of the nuclear power plan. (authors)

The Daya Bay nuclear power plant performance. An example of international cooperation

International Nuclear Information System (INIS)

Hertzog, D.

1998-01-01

Technology transfer is an integral part of Framatome's general approach to its Chinese partners for the Daya Bay, Ling Ao, and Qinshan phase 2 nuclear power plant projects. It has been the subject of major operations covering all activities relevant to project management, design and engineering, manufacturing, and maintenance know-how. This presentation is more particularly devoted to nuclear island maintenance knowledge, which has been extensively transferred by Framatome to the Daya Bay plant owner over a period of four years, through a program including the constitution of mixed Franco-Chinese teams to handle plant maintenance, shadow training of Chinese specialists in the maintenance work performed by Framatome or its subcontractors in France, and theoretical training sessions on equipment mockups in China and France. (author)

The radon monitoring system in Daya Bay Reactor Neutrino Experiment

International Nuclear Information System (INIS)

Chu, M.C.; Kwan, K.K.; Kwok, M.W.; Kwok, T.; Leung, J.K.C.; Leung, K.Y.; Lin, Y.C.; Luk, K.B.; Pun, C.S.J.

2016-01-01

We developed a highly sensitive, reliable and portable automatic system (H 3 ) to monitor the radon concentration of the underground experimental halls of the Daya Bay Reactor Neutrino Experiment. H 3 is able to measure radon concentration with a statistical error less than 10% in a 1-h measurement of dehumidified air (R.H. 5% at 25 °C) with radon concentration as low as 50 Bq/m 3 . This is achieved by using a large radon progeny collection chamber, semiconductor α-particle detector with high energy resolution, improved electronics and software. The integrated radon monitoring system is highly customizable to operate in different run modes at scheduled times and can be controlled remotely to sample radon in ambient air or in water from the water pools where the antineutrino detectors are being housed. The radon monitoring system has been running in the three experimental halls of the Daya Bay Reactor Neutrino Experiment since November 2013.

Study of the wave packet treatment of neutrino oscillation at Daya Bay

Science.gov (United States)

Daya Bay Collaboration

2017-09-01

The disappearance of reactor \\bar{ν }_e observed by the Daya Bay experiment is examined in the framework of a model in which the neutrino is described by a wave packet with a relative intrinsic momentum dispersion σ _{rel}. Three pairs of nuclear reactors and eight antineutrino detectors, each with good energy resolution, distributed among three experimental halls, supply a high-statistics sample of \\bar{ν }_e acquired at nine different baselines. This provides a unique platform to test the effects which arise from the wave packet treatment of neutrino oscillation. The modified survival probability formula was used to fit Daya Bay data, providing the first experimental limits: 2.38 × 10^{-17}< σ _{rel} < 0.23. Treating the dimensions of the reactor cores and detectors as constraints, the limits are improved: 10^{-14} ≲ σ _ {rel} < 0.23, and an upper limit of σ _ {rel}<0.20 (which corresponds to σ _x ≳ 10^{-11} {cm }) is obtained. All limits correspond to a 95% C.L. Furthermore, the effect due to the wave packet nature of neutrino oscillation is found to be insignificant for reactor antineutrinos detected by the Daya Bay experiment thus ensuring an unbiased measurement of the oscillation parameters sin ^22θ _{13} and Δ m^2_{32} within the plane wave model.

Risk of loss power for ATWT in Daya Bay and Ling'ao nuclear power stations

International Nuclear Information System (INIS)

Guo Cheng

2010-01-01

In order to analyze the differences between the Anticipated Transient Without Reactor Trip (ATWT) and other reactor protection methods, this paper analyzes in detail the realizing means of ATWT and the effect of lost of power supply on the units based on Daya Bay and Ling'ao Nuclear Power Stations by system wiring diagram. Based on the comprehensive analysis,this paper proposes the sequence for powering when recovering the power source after ATWT power supply (LCC/LNE) loss for Daya Bay and Ling'ao Nuclear Power Stations. (authors)

Muon reconstruction in the Daya Bay water pools

International Nuclear Information System (INIS)

Hackenburg, R. W.

2017-01-01

Muon reconstruction in the Daya Bay water pools would serve to verify the simulated muon fluxes and offer the possibility of studying cosmic muons in general. This reconstruction is, however, complicated by many optical obstacles and the small coverage of photomultiplier tubes (PMTs) as compared to other large water Cherenkov detectors. The PMTs’ timing information is useful only in the case of direct, unreflected Cherenkov light. This requires PMTs to be added and removed as an hypothesized muon trajectory is iteratively improved, to account for the changing effects of obstacles and direction of light. Therefore, muon reconstruction in the Daya Bay water pools does not lend itself to a general fitting procedure employing smoothly varying functions with continuous derivatives. Here, we describe an algorithm which overcomes these complications. It employs the method of Least Mean Squares to determine an hypothesized trajectory from the PMTs’ charge-weighted positions. This initially hypothesized trajectory is then iteratively refined using the PMTs’ timing information. Reconstructions with simulated data reproduce the simulated trajectory to within about 5° in direction and about 45 cm in position at the pool surface, with a bias that tends to pull tracks away from the vertical by about 3°.

Study of the wave packet treatment of neutrino oscillation at Daya Bay

Energy Technology Data Exchange (ETDEWEB)

An, F.P. [East China Univ. of Science and Technology, Shanghai (China). Inst. of Modern Physics; Balantekin, A.B. [Wisconsin Univ., Madison, WI (United States); Band, H.R. [Yale Univ., New Haven, CT (United States). Dept. of Physics; Collaboration: Daya Bay Collaboration; and others

2017-09-15

The disappearance of reactor anti ν{sub e} observed by the Daya Bay experiment is examined in the framework of a model in which the neutrino is described by a wave packet with a relative intrinsic momentum dispersion σ{sub rel}. Three pairs of nuclear reactors and eight antineutrino detectors, each with good energy resolution, distributed among three experimental halls, supply a high-statistics sample of anti ν{sub e} acquired at nine different baselines. This provides a unique platform to test the effects which arise from the wave packet treatment of neutrino oscillation. The modified survival probability formula was used to fit Daya Bay data, providing the first experimental limits: 2.38 x 10{sup -17} < σ{sub rel} < 0.23. Treating the dimensions of the reactor cores and detectors as constraints, the limits are improved: 10{sup -14} or similar 10{sup -11} cm) is obtained. All limits correspond to a 95% C.L. Furthermore, the effect due to the wave packet nature of neutrino oscillation is found to be insignificant for reactor antineutrinos detected by the Daya Bay experiment thus ensuring an unbiased measurement of the oscillation parameters sin{sup 2}2θ{sub 13} and Δm{sup 2}{sub 32} within the plane wave model. (orig.)

Temporal and spatial distribution of the meiobenthic community in Daya Bay, South China Sea

Science.gov (United States)

Tang, L.; Li, H. X.; Yan, Y.

2012-04-01

Spatial and temporal biodiversity patterns of the meiobenthos were studied for the first time in Daya Bay, which is a tropical semi-enclosed basin located in the South China Sea. The abundance, biomass, and composition of the meiobenthos and the basic environmental factors in the bay were investigated. The following 19 taxonomic groups were represented in the meiofauna: Nematoda, Copepoda, Polychaeta, Oligochaeta, Kinorhyncha, Gastrotricha, Ostracoda, Bivalvia, Turbellaria, Nemertinea, Sipuncula, Hydroida, Amphipoda, Cumacea, Halacaroidea, Priapulida, Echinodermata, Tanaidacea, and Rotifera. Total abundance and biomass of the meiobenthos showed great spatial and temporal variation, with mean values of 993.57 ± 455.36 ind cm-2 and 690.51 ± 210.64 μg 10 cm-2, respectively. Nematodes constituted 95.60 % of the total abundance and thus had the greatest effect on meiofauna quantity and distribution, followed by copepods (1.55 %) and polychaetes (1.39 %). Meiobenthos abundance was significantly negatively correlated with water depth at stations (r=-0.747, P<0.05) and significantly negatively correlated with silt-clay content (r=-0.516, P<0.01) and medium diameter (r=-0.499, P<0.01) of the sediment. Similar results were found for correlations of biomass and abundance of nematodes with environmental parameters. Polychaete abundance was positively correlated with the bottom water temperature (r=0.456, P<0.01). Meiobenthos abundance differed significantly among seasons (P<0.05), although no significant difference among stations and the interaction of station × season was detected by two-way ANOVA. In terms of vertical distribution, most of the meiobenthos was found in the surface layer of sediment. This pattern was apparent for nematodes and copepods, but a vertical distribution pattern for polychaetes was not as obvious. Based on the biotic indices and analyses of their correlations and variance, the diversity of this community was likely to be influenced by

Daya Bay Nuclear Power Station five-year business plan and operating results

International Nuclear Information System (INIS)

Zhang Shanming

2000-01-01

Guangdong Nuclear Power Joint Venture Company, Ltd. first 5-Year Business Plan (hereinafter referred to as 5-Year Business Plan) serves as guidance of both the operations and management of the company. Continuous performance improvement of the nuclear power station has been achieved through the fulfillment of goals and improvement plan defined by the 5-Year Business Plan, and through standard and systematic management. Daya Bay Nuclear Power Station (GNPS) has made great contributions to sustainable economic developments of both Guangdong and Hong Kong since its commercial operation in 1994. As of the end of 1999, the cumulative off-take electricity generated by GNPS had reached 69.9 billion kWh. Of the WANO indicators universally applied by nuclear power industry throughout the world, 6 indicators of Daya Bay performance entered the world top quartile while 9 the medium level

Ecological environment changes in Daya Bay, China, from 1982 to 2004

Energy Technology Data Exchange (ETDEWEB)

Wang Youshao [Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301 (China)], E-mail: yswang@scsio.ac.cn; Lou Zhiping; Sun Cuici [Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301 (China); Sun Song [Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071 (China)

2008-11-15

Data collected from 12 marine monitoring stations in Daya Bay from 1982 to 2004 reveal a substantial change in the ecological environment of this region. The average N/P ratio increased from 1.377 in 1985 to 49.09 in 2004. Algal species changed from 159 species of 46 genera in 1982 to 126 species of 44 genera in 2004. Major zooplankton species went from 46 species in 1983 to 36 species in 2004. The annual mean biomass of benthic animals was recorded at 123.10 g m{sup -2} in 1982 and 126.68 g m{sup -2} in 2004. Mean biomass and species of benthic animals near nuclear power plants ranged from 317.9 g m{sup -2} in 1991 to 45.24 g m{sup -2} in 2004 and from 250 species in 1991 to 177 species in 2004. A total of 12-19 species of hermatypic corals and 13 species of mangrove plants were observed in Daya Bay from 1984 to 2002.

Ecological environment changes in Daya Bay, China, from 1982 to 2004

International Nuclear Information System (INIS)

Wang Youshao; Lou Zhiping; Sun Cuici; Sun Song

2008-01-01

Data collected from 12 marine monitoring stations in Daya Bay from 1982 to 2004 reveal a substantial change in the ecological environment of this region. The average N/P ratio increased from 1.377 in 1985 to 49.09 in 2004. Algal species changed from 159 species of 46 genera in 1982 to 126 species of 44 genera in 2004. Major zooplankton species went from 46 species in 1983 to 36 species in 2004. The annual mean biomass of benthic animals was recorded at 123.10 g m -2 in 1982 and 126.68 g m -2 in 2004. Mean biomass and species of benthic animals near nuclear power plants ranged from 317.9 g m -2 in 1991 to 45.24 g m -2 in 2004 and from 250 species in 1991 to 177 species in 2004. A total of 12-19 species of hermatypic corals and 13 species of mangrove plants were observed in Daya Bay from 1984 to 2002

The Daya Bay antineutrino detector filling system and liquid mass measurement

Science.gov (United States)

Band, H. R.; Cherwinka, J. J.; Draeger, E.; Heeger, K. M.; Hinrichs, P.; Lewis, C. A.; Mattison, H.; McFarlane, M. C.; Webber, D. M.; Wenman, D.; Wang, W.; Wise, T.; Xiao, Q.

2013-09-01

The Daya Bay Reactor Neutrino Experiment has measured the neutrino mixing angle θ13 to world-leading precision. The experiment uses eight antineutrino detectors filled with 20-tons of gadolinium-doped liquid scintillator to detect antineutrinos emitted from the Daya Bay nuclear power plant through the inverse beta decay reaction. The precision measurement of sin22θ13 relies on the relative antineutrino interaction rates between detectors at near (400 m) and far (roughly 1.8 km) distances from the nuclear reactors. The measured interaction rate in each detector is directly proportional to the number of protons in the liquid scintillator target. A precision detector filling system was developed to simultaneously fill the three liquid zones of the antineutrino detectors and measure the relative target mass between detectors to < 0.02%. This paper describes the design, operation, and performance of the system and the resulting precision measurement of the detectors' target liquid masses.

Ecological environment changes in Daya Bay, China, from 1982 to 2004.

Science.gov (United States)

Wang, You-Shao; Lou, Zhi-Ping; Sun, Cui-Ci; Sun, Song

2008-11-01

Data collected from 12 marine monitoring stations in Daya Bay from 1982 to 2004 reveal a substantial change in the ecological environment of this region. The average N/P ratio increased from 1.377 in 1985 to 49.09 in 2004. Algal species changed from 159 species of 46 genera in 1982 to 126 species of 44 genera in 2004. Major zooplankton species went from 46 species in 1983 to 36 species in 2004. The annual mean biomass of benthic animals was recorded at 123.10 g m(-2) in 1982 and 126.68 g m(-2) in 2004. Mean biomass and species of benthic animals near nuclear power plants ranged from 317.9 g m(-2) in 1991 to 45.24 g m(-2) in 2004 and from 250 species in 1991 to 177 species in 2004. A total of 12-19 species of hermatypic corals and 13 species of mangrove plants were observed in Daya Bay from 1984 to 2002.

Summary of Test Results for Daya Bay Rock Samples

International Nuclear Information System (INIS)

Onishi, Celia Tiemi; Dobson, Patrick; Nakagawa, Seiji

2004-01-01

A series of analytical tests was conducted on a suite of granitic rock samples from the Daya Bay region of southeast China. The objective of these analyses was to determine key rock properties that would affect the suitability of this location for the siting of a neutrino oscillation experiment. This report contains the results of chemical analyses, rock property measurements, and a calculation of the mean atomic weight

Strategy and system of fire protection at Guangdong Daya Bay Nuclear Power Plant

International Nuclear Information System (INIS)

Zhou Weihong

1999-12-01

The fire protection is an important safety issue of nuclear power utilities. The author depicts the strategy and management system of fire protection implemented successfully at Guangdong Daya Bay Nuclear Power Plant of China

Probing non-standard interactions at Daya Bay

Energy Technology Data Exchange (ETDEWEB)

Agarwalla, Sanjib Kumar; Bagchi, Partha [Institute of Physics, Sachivalaya Marg,Sainik School Post, Bhubaneswar 751005 (India); Forero, David V. [AHEP Group, Institut de Física Corpuscular - C.S.I.C./Universitat de València,Parc Cientific de Paterna, C/ Catedratico José Beltrán, 2 E-46980 Paterna (València) (Spain); Center for Neutrino Physics, Virginia Tech,Blacksburg, VA 24061 (United States); Tórtola, Mariam [AHEP Group, Institut de Física Corpuscular - C.S.I.C./Universitat de València,Parc Cientific de Paterna, C/ Catedratico José Beltrán, 2 E-46980 Paterna (València) (Spain)

2015-07-13

In this article we consider the presence of neutrino non-standard interactions (NSI) in the production and detection processes of reactor antineutrinos at the Daya Bay experiment. We report for the first time, the new constraints on the flavor non-universal and flavor universal charged-current NSI parameters, estimated using the currently released 621 days of Daya Bay data. New limits are placed assuming that the new physics effects are just inverse of each other in the production and detection processes. With this special choice of the NSI parameters, we observe a shift in the oscillation amplitude without distorting the L/E pattern of the oscillation probability. This shift in the depth of the oscillation dip can be caused by the NSI parameters as well as by θ{sub 13}, making it quite difficult to disentangle the NSI effects from the standard oscillations. We explore the correlations between the NSI parameters and θ{sub 13} that may lead to significant deviations in the reported value of the reactor mixing angle with the help of iso-probability surface plots. Finally, we present the limits on electron, muon/tau, and flavor universal (FU) NSI couplings with and without considering the uncertainty in the normalization of the total event rates. Assuming a perfect knowledge of the event rates normalization, we find strong upper bounds ∼ 0.1% for the electron and FU cases improving the present limits by one order of magnitude. However, for a conservative error of 5% in the total normalization, these constraints are relaxed by almost one order of magnitude.

Probing non-standard interactions at Daya Bay

International Nuclear Information System (INIS)

Agarwalla, Sanjib Kumar; Bagchi, Partha; Forero, David V.; Tórtola, Mariam

2015-01-01

In this article we consider the presence of neutrino non-standard interactions (NSI) in the production and detection processes of reactor antineutrinos at the Daya Bay experiment. We report for the first time, the new constraints on the flavor non-universal and flavor universal charged-current NSI parameters, estimated using the currently released 621 days of Daya Bay data. New limits are placed assuming that the new physics effects are just inverse of each other in the production and detection processes. With this special choice of the NSI parameters, we observe a shift in the oscillation amplitude without distorting the L/E pattern of the oscillation probability. This shift in the depth of the oscillation dip can be caused by the NSI parameters as well as by θ 13 , making it quite difficult to disentangle the NSI effects from the standard oscillations. We explore the correlations between the NSI parameters and θ 13 that may lead to significant deviations in the reported value of the reactor mixing angle with the help of iso-probability surface plots. Finally, we present the limits on electron, muon/tau, and flavor universal (FU) NSI couplings with and without considering the uncertainty in the normalization of the total event rates. Assuming a perfect knowledge of the event rates normalization, we find strong upper bounds ∼ 0.1% for the electron and FU cases improving the present limits by one order of magnitude. However, for a conservative error of 5% in the total normalization, these constraints are relaxed by almost one order of magnitude.

Detecting supernova neutrinos in Daya Bay Neutrino Laboratory

International Nuclear Information System (INIS)

Huang Mingyang; Guo Xinheng; Yang Binglin

2011-01-01

While detecting supernova neutrinos in the Daya Bay neutrino laboratory, several supernova neutrino effects need to be considered, including the supernova shock effects, the neutrino collective effects, the Mikheyev-Smirnov-Wolfenstein (MSW) effects, and the Earth matter effects. The phenomena of neutrino oscillation is affected by the above effects. Using some ratios of the event numbers of different supernova neutrinos, we propose some possible methods to identify the mass hierarchy and acquire information about the neutrino mixing angle θ13 and neutrino masses. (authors)

Effect of the tide on the diffusion of 3H in the liquid effluent discharged from Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Zhang Jie; Zhang Chunlin; Pan Meng

2006-01-01

The tide field at the time of liquid effluent discharging from Daya Bay nuclear power station, and the average water speed at the monitoring points in west Daya Bay from the time of discharging to the time of sampling were calculated by ADI (Alternating Direction Implicit) method. By comparing analysis, the difference of 3 H diffusion between spring tide and neap tide (the expansion of 3 H within one day of spring tide is greater than that within one day of neap tide) was found. So, an equivalent diffusion time is introduced to modify the original model, and a better attenuation relation between the average 3 He concentration in west Daya Bay and the time since the liquid 3 H discharging is obtained. (authors)

Concentrations, Distribution, and Ecological Risk Assessment of Heavy Metals in Daya Bay, China

Directory of Open Access Journals (Sweden)

Huijuan Tang

2018-06-01

Full Text Available Surface sediment samples were collected from 19 sites throughout Daya Bay, China to study the concentrations, spatial distributions, potential ecological risk, and possible sources of heavy, including metals copper (Cu, zinc (Zn, arsenic (As, cadmium (Cd, nickel (Ni, lead (Pb, mercury (Hg, and chromium (Cr. The mean concentrations of the eight heavy metals were 24, 109, 6.5, 0.09, 35.3, 26.8, 0.07, and 109 µg g−1, respectively. The concentrations of most heavy metals were within range of those recorded in previous years. The spatial distribution pattern of most heavy metals were similar, with lowest values recorded along the southeast coast and the open sea area; the highest values were recorded in the northern Daya Bay, especially the northwest. Cu, Zn, As, Cd, Pb, and Hg were classified as Class I, and Ni and Cr were classified as Class II according to the Sediment Quality Guidelines (SQGs of China. The potential ecological risk (Eif indices of Cu, Zn, As, Pb, Ni, and Cr specify that these metals pose low risk to the ecosystem of the Bay, whereas Cd and Hg pose a very high risk in some sites. The geoaccumulation indices (Igeo of Cu, Zn, As, Ni, and Cr specify weak or no pollution in Daya Bay, whereas those of Pb, Cd, and Hg in some sites indicate moderate or even high pollution. Spatial distribution, carbon/nitrogen analysis, Pearson correlation, and principal components analysis indicated that Cu, Zn, As, Pb, Ni, Cr, total organic carbon (TOC, and total nitrogen (TN originated from the same sources. Ballast water or sewage from the cargo ships that park at the harbors or anchor in the Bay were the important sources for Cu, Zn, As, Pb, Ni, Cr, TOC, and TN. Other anthropogenic sources, such as agricultural runoff and aquaculture, might also be responsible, whereas Hg and Cd originated from other point sources.

Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay.

Science.gov (United States)

An, F P; Balantekin, A B; Band, H R; Bishai, M; Blyth, S; Cao, D; Cao, G F; Cao, J; Chan, Y L; Chang, J F; Chang, Y; Chen, H S; Chen, Q Y; Chen, S M; Chen, Y X; Chen, Y; Cheng, J; Cheng, Z K; Cherwinka, J J; Chu, M C; Chukanov, A; Cummings, J P; Ding, Y Y; Diwan, M V; Dolgareva, M; Dove, J; Dwyer, D A; Edwards, W R; Gill, R; Gonchar, M; Gong, G H; Gong, H; Grassi, M; Gu, W Q; Guo, L; Guo, X H; Guo, Y H; Guo, Z; Hackenburg, R W; Hans, S; He, M; Heeger, K M; Heng, Y K; Higuera, A; Hsiung, Y B; Hu, B Z; Hu, T; Huang, E C; Huang, H X; Huang, X T; Huang, Y B; Huber, P; Huo, W; Hussain, G; Jaffe, D E; Jen, K L; Ji, X P; Ji, X L; Jiao, J B; Johnson, R A; Jones, D; Kang, L; Kettell, S H; Khan, A; Kohn, S; Kramer, M; Kwan, K K; Kwok, M W; Langford, T J; Lau, K; Lebanowski, L; Lee, J; Lee, J H C; Lei, R T; Leitner, R; Leung, J K C; Li, C; Li, D J; Li, F; Li, G S; Li, Q J; Li, S; Li, S C; Li, W D; Li, X N; Li, X Q; Li, Y F; Li, Z B; Liang, H; Lin, C J; Lin, G L; Lin, S; Lin, S K; Lin, Y-C; Ling, J J; Link, J M; Littenberg, L; Littlejohn, B R; Liu, J L; Liu, J C; Loh, C W; Lu, C; Lu, H Q; Lu, J S; Luk, K B; Ma, X Y; Ma, X B; Ma, Y Q; Malyshkin, Y; Martinez Caicedo, D A; McDonald, K T; McKeown, R D; Mitchell, I; Nakajima, Y; Napolitano, J; Naumov, D; Naumova, E; Ngai, H Y; Ochoa-Ricoux, J P; Olshevskiy, A; Pan, H-R; Park, J; Patton, S; Pec, V; Peng, J C; Pinsky, L; Pun, C S J; Qi, F Z; Qi, M; Qian, X; Qiu, R M; Raper, N; Ren, J; Rosero, R; Roskovec, B; Ruan, X C; Steiner, H; Stoler, P; Sun, J L; Tang, W; Taychenachev, D; Treskov, K; Tsang, K V; Tull, C E; Viaux, N; Viren, B; Vorobel, V; Wang, C H; Wang, M; Wang, N Y; Wang, R G; Wang, W; Wang, X; Wang, Y F; Wang, Z; Wang, Z; Wang, Z M; Wei, H Y; Wen, L J; Whisnant, K; White, C G; Whitehead, L; Wise, T; Wong, H L H; Wong, S C F; Worcester, E; Wu, C-H; Wu, Q; Wu, W J; Xia, D M; Xia, J K; Xing, Z Z; Xu, J L; Xu, Y; Xue, T; Yang, C G; Yang, H; Yang, L; Yang, M S; Yang, M T; Yang, Y Z; Ye, M; Ye, Z; Yeh, M; Young, B L; Yu, Z Y; Zeng, S; Zhan, L; Zhang, C; Zhang, C C; Zhang, H H; Zhang, J W; Zhang, Q M; Zhang, R; Zhang, X T; Zhang, Y M; Zhang, Y X; Zhang, Y M; Zhang, Z J; Zhang, Z Y; Zhang, Z P; Zhao, J; Zhou, L; Zhuang, H L; Zou, J H

2017-06-23

The Daya Bay experiment has observed correlations between reactor core fuel evolution and changes in the reactor antineutrino flux and energy spectrum. Four antineutrino detectors in two experimental halls were used to identify 2.2 million inverse beta decays (IBDs) over 1230 days spanning multiple fuel cycles for each of six 2.9 GW_{th} reactor cores at the Daya Bay and Ling Ao nuclear power plants. Using detector data spanning effective ^{239}Pu fission fractions F_{239} from 0.25 to 0.35, Daya Bay measures an average IBD yield σ[over ¯]_{f} of (5.90±0.13)×10^{-43}  cm^{2}/fission and a fuel-dependent variation in the IBD yield, dσ_{f}/dF_{239}, of (-1.86±0.18)×10^{-43}  cm^{2}/fission. This observation rejects the hypothesis of a constant antineutrino flux as a function of the ^{239}Pu fission fraction at 10 standard deviations. The variation in IBD yield is found to be energy dependent, rejecting the hypothesis of a constant antineutrino energy spectrum at 5.1 standard deviations. While measurements of the evolution in the IBD spectrum show general agreement with predictions from recent reactor models, the measured evolution in total IBD yield disagrees with recent predictions at 3.1σ. This discrepancy indicates that an overall deficit in the measured flux with respect to predictions does not result from equal fractional deficits from the primary fission isotopes ^{235}U, ^{239}Pu, ^{238}U, and ^{241}Pu. Based on measured IBD yield variations, yields of (6.17±0.17) and (4.27±0.26)×10^{-43}  cm^{2}/fission have been determined for the two dominant fission parent isotopes ^{235}U and ^{239}Pu. A 7.8% discrepancy between the observed and predicted ^{235}U yields suggests that this isotope may be the primary contributor to the reactor antineutrino anomaly.

Axial power deviation control strategy and computer simulation for Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Liao Yehong; Zhou Xiaoling, Xiao Min

2004-01-01

Daya Bay Nuclear Power Station has very tight operation diagram especially at its right side. Therefore the successful control of axial power deviation for PWR is crucial to nuclear safety. After analyzing various core characters' effect on axial power distribution, several axial power deviation control strategies has been proposed to comply with different power varying operation scenario. Application and computer simulation of the strategies has shown that our prediction of axial power deviation evolution are comparable to the measurement values, and that our control strategies are effective. Engineering experience shows that the application of our methodology can predict accurately the transient of axial power deviation, and therefore has become a useful tool for reactor operation and safety control. This paper presents the axial power control characteristics, reactor operation strategy research, computer simulation, and comparison to measurement results in Daya Bay Nuclear Power Station. (author)

Muon Simulation at the Daya Bay SIte

International Nuclear Information System (INIS)

Mengyun, Guan; Jun, Cao; Changgen, Yang; Yaxuan, Sun; Luk, Kam-Biu

2006-01-01

With a pretty good-resolution mountain profile, we simulated the underground muon background at the Daya Bay site. To get the sea-level muon flux parameterization, a modification to the standard Gaisser's formula was introduced according to the world muon data. MUSIC code was used to transport muon through the mountain rock. To deploy the simulation, first we generate a statistic sample of sea-level muon events according to the sea-level muon flux distribution formula; then calculate the slant depth of muon passing through the mountain using an interpolation method based on the digitized data of the mountain; finally transport muons through rock to get underground muon sample, from which we can get results of muon flux, mean energy, energy distribution and angular distribution.

Petroleum pollution in surface sediments of Daya Bay, South China, revealed by chemical fingerprinting of aliphatic and alicyclic hydrocarbons

Science.gov (United States)

Gao, Xuelu; Chen, Shaoyong

2008-10-01

Nine surface sediments collected from Daya Bay have been Soxhlet-extracted with 2:1 (v/v) dichloromethane-methanol. The non-aromatic hydrocarbon (NAH) fraction of solvent extractable organic matter (EOM) and some bulk geochemical parameters have been analyzed to determine petroleum pollution of the bay. The NAH content varies from 32 to 276 μg g -1 (average 104 μg g -1) dry sediment and accounts for 5.8-64.1% (average 41.6%) of the EOM. n-Alkanes with carbon number ranging from 15 to 35 are identified to be derived from both biogenic and petrogenic sources in varying proportions. The contribution of marine authigenic input to the sedimentary n-alkanes is lower than the allochthonous input based on the average n-C 31/ n-C 19 alkane ratio. 25.6-46.5% of the n-alkanes, with a mean of 35.6%, are contributed by vascular plant wax. Results of unresolved complex mixture, isoprenoid hydrocarbons, hopanes and steranes also suggest possible petroleum contamination. There is strong evidence of a common petroleum contamination source in the bay.

Accident assessment under emergency situation in Daya Bay nuclear power station

International Nuclear Information System (INIS)

Yang Ling; Chen Degan; Lin Shumou; Fu Guohui

2004-01-01

The accident assessment under emergency situation includes the accident status evaluation and its consequence estimation. This paper introduces evaluation methods for accident status and its assistant computer system (SESAME-GNP) utilized during the emergency situation in Guangdong Daya Bay Nuclear Power Station (GNPS) in detail. At the same time, an improved accident consequence estimation system in GNPS (RACAS-GNP) is briefly described. With the improvement of the accident assessment systems, the capability of emergency response in GNPS is strengthened

Cause trending analysis for licensing operational events in Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Wang Dewei

2005-01-01

The human causal factors for all human error licensing operational events on Daya Bay nuclear power station since 1993 to 2003 are categorized, the trend of these causal factors is analyzed. The emphasis is placed on analyzing the deficiencies on complying with and executing regulations and procedures. The results provide directional reference for nuclear power station to improve human performance. (author)

The application of MVC design pattern in Daya bay reactor neutrino experiments online safety training system

International Nuclear Information System (INIS)

Liu Guanchuan; Chu Yuanping

2011-01-01

The article made an introduction to MVC, which is an architectural pattern used in software engineering. It specified the advantages and disadvantages of MVC and also the application of MVC in Daya Bay nuclear reactor neutrino experiment online safety training system. (authors)

The computerized management for individual monitoring data in Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Lin Shumou; Yang Xiaochen

1995-01-01

The authors report the individual monitoring data management system (IDOSE) at Daya Bay Nuclear Power Station. The components of the individual monitoring system, the design requirements of IDOSE, the characteristics and application of this computerized management system are mainly presented. Its application shows that IDOSE meets the requirements of the concerning occupational standards of the state and matches with the requirements of IAEA/ISOE

Risk informed approach and its application in Daya Bay NPP operation safety management

International Nuclear Information System (INIS)

He Yu; Zhang Jinlong; Bao Yukun

2004-01-01

The paper presents a systematic risk assessment approach based on probabilistic theory, and discusses its significance and application process in safety management. Risk informed approach that uses deterministic engineering principles and probabilistic methods is the appropriate approach to decision making at nuclear power plants. The paper also studies an actual case taken place at Daya Bay Nuclear Power Station using PSA approach to equipment maintenance. (authors)

The unknown on the doorstep: Hong Kong's fears concerning Daya Bay, China's first major nuclear power station and the public relations challenges

Energy Technology Data Exchange (ETDEWEB)

Chan, Albert [Hong Kong Nuclear Investment Co Ltd., Hongkong (China)

1995-07-01

The Guangdong Nuclear Power Station at Daya Bay is located east of the Shenzhen Special Economic Zone in Southern China. It is a joint venture between Hong Kong and China. In terms of construction schedule, budget and performance, Daya Bay ranks amongst the best plants anywhere. This achievement is even more apparent when one takes into account the fact that Daya Bay is the first major nuclear power station in China and that a large amount of interface and co-ordination is required to bring together French and British technologies in a non-English speaking environment. This Paper addresses the various and challenging public relations issues faced by Daya Bay during the last 15 years (from feasibility study stage). The negotiation for the Daya Bay nuclear power station project coincided with the political negotiations between China and Britain over the future of Hong Kong - the 1997 issue. (The political negotiations commenced in September 1982 and concluded in late 1984). Concerns over the nuclear project were heard during this phase but were limited to local environmental groups rather than the general public. The focus was more on the environmental and radiological impact of a nuclear power station than specific technical and safety issues. As for the general public, the project wasn't much of an issue until April, 1986 (Chernobyl accident). Period from 1986-1993 was the period of construction of the Daya Bay nuclear power station. An antinuclear campaign was launched by a few local activists who claimed to have collected signatures from one million people in Hong Kong urging the Chinese Government to shelve the project. The Hong Kong public did not understand the difference between Chernobyl type and PWR-type nuclear reactors (Daya Bay is a PWR) nor were they aware that even in the case of Chernobyl, only residents within 30 km needed to be evacuated. These rational arguments and facts could not compete with the horror stories and news photos appearing in the

The unknown on the doorstep: Hong Kong's fears concerning Daya Bay, China's first major nuclear power station and the public relations challenges

International Nuclear Information System (INIS)

Chan, Albert

1995-01-01

The Guangdong Nuclear Power Station at Daya Bay is located east of the Shenzhen Special Economic Zone in Southern China. It is a joint venture between Hong Kong and China. In terms of construction schedule, budget and performance, Daya Bay ranks amongst the best plants anywhere. This achievement is even more apparent when one takes into account the fact that Daya Bay is the first major nuclear power station in China and that a large amount of interface and co-ordination is required to bring together French and British technologies in a non-English speaking environment. This Paper addresses the various and challenging public relations issues faced by Daya Bay during the last 15 years (from feasibility study stage). The negotiation for the Daya Bay nuclear power station project coincided with the political negotiations between China and Britain over the future of Hong Kong - the 1997 issue. (The political negotiations commenced in September 1982 and concluded in late 1984). Concerns over the nuclear project were heard during this phase but were limited to local environmental groups rather than the general public. The focus was more on the environmental and radiological impact of a nuclear power station than specific technical and safety issues. As for the general public, the project wasn't much of an issue until April, 1986 (Chernobyl accident). Period from 1986-1993 was the period of construction of the Daya Bay nuclear power station. An antinuclear campaign was launched by a few local activists who claimed to have collected signatures from one million people in Hong Kong urging the Chinese Government to shelve the project. The Hong Kong public did not understand the difference between Chernobyl type and PWR-type nuclear reactors (Daya Bay is a PWR) nor were they aware that even in the case of Chernobyl, only residents within 30 km needed to be evacuated. These rational arguments and facts could not compete with the horror stories and news photos appearing in the

Analysis and evaluation of seismic response of reactor building for Daya Bay Nuclear Power Plant

International Nuclear Information System (INIS)

Li Zhongcheng; China Guangdong Nuclear Power Company, Shenzhen; Li Zhongxian

2005-01-01

Daya Bay NPP has been operating safely and stably over 10 years since 1994, and its' seismic analysis of nuclear island was in accordance with the approaches in RCC-G standard for the model M310, in which the Simplified Impedance Matrix Method (SIMM) was employed for the consideration of SSI. Thanks to the rapid progress being made in upgrading the evaluation technology and the capability of data processing systems, methods and software tools for the SSI analysis have experienced significant development all over the world. Focused on the model of reactor building of the Daya Bay NPP, in his paper the more sophisticated 3D half-space continuum impedance method based on the Green functions is used to analyze the functions of the soil, and then the seismic responses of the coupled SSI system are calculated and compared with the corresponding design values. It demonstrates that the design method provides a set of conservatively safe results. The conclusions from the study is hopefully to provide some important references to the assessment of seismic safety margin for the operating NPPs. (authors)

Views on ASSET guidelines from event 'T5' of Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Hao Xiaofeng

1997-01-01

The event assessment methodology adopted by ASSET (Assessment of Safety Significant Events Team) of IAEA, and event 'T5' (abnormal control rod drop time) occurred in Daya Bay Nuclear Power Station, including the causes and the corrective actions are briefly presented. The assessment of the event is performed by using the ASSET methodology, some advantages and limits of the methodology in practice are pointed out

Highlights from the Daya Bay Neutrino Experiment

Directory of Open Access Journals (Sweden)

Wang Zhe

2014-04-01

Full Text Available With an understanding of the energy response of the anti-neutrino detectors, the Daya Bay collaboration presents new results using gadolinium-neutron capture: sin2 2θ13 = 0.108 ± 0.028 and |Δmee2| = 2.55−0.18+0.21 × 10−3 eV2 with only the distortion information of the neutrino energy spectrum shape, and sin2 2θ13 = 0.090−0.009+0.008 and |Δmee2| = 2.59−0.20+0.19 10−3 eV2 with both the shape and event rate information. It is also demonstrated that a clean inverse beta decay sample can be extracted using hydrogen-neutron capture, which is now being used for neutrino oscillation measurement. The supernova online trigger is designed and implemented, which can provide about 100% efficiency for all SN1987A-scale supernova bursts within the Milky Way.

Recent Results from the Daya Bay Experiment

Science.gov (United States)

Yu, Z. Y.; Daya Bay Collaboration

2017-09-01

The Daya Bay reactor neutrino experiment was designed to precisely measure the neutrino oscillation parameter θ 13 via the relative comparison of neutrino rates and spectra at different baselines. Eight identically designed detectors were deployed in two near experimental halls and a far hall. Six 2.9 GWth nuclear power reactors served as intense {\\bar ν _e} sources. Since Dec. 2011, the experiment has been running stably. The latest neutrino oscillation results were based on 1230 days of data. Analysis using a three-flavor oscillation model yielded sin22θ 13 = 0.0841 ± 0.0027(stat.) ± 0.0019(syst.), and effective neutrino mass-squared difference ≤ft| {Δ mee^2} \\right| = ≤ft( {2.50 +/- 0.06≤ft( {stat.} \\right) +/- 0.06≤ft( {syst.} \\right)} \\right) × {10 - 3}e{V^2}. Besides, results from the absolute measurement of reactor {\\bar ν _e} flux and energy spectrum, and a search for a light sterile neutrino are also presented.

Distribution of polycyclic aromatic hydrocarbons in water and surface sediments from Daya Bay, China

International Nuclear Information System (INIS)

Zhou, J.L.; Maskaoui, K.

2003-01-01

Findings indicate an urgent need to establish a monitoring program for persistent organic pollutants in water and sediment. - Marine culture is thriving in China and represents a major component of the regional economy in coastal zones, yet the environmental quality of many of those areas has never been studied. This paper attempts to investigate the quality status of Daya Bay, a key aquaculture area in China. The levels of 16 polycyclic aromatic hydrocarbons (PAHs) were determined in water and sediment samples of the bay. The total concentrations of 16 PAHs varied from 4228 to 29325 ng l -1 in water, and from 115 to 1134 ng g -1 dry weight in sediments. In comparison to many other marine systems studied, the PAH levels in Daya Bay waters were relatively high, and at six sites they were sufficiently high (>10 μg l -1 ) to cause acute toxicity. The PAH composition pattern in sediments suggest dominance by medium to high molecular weight compounds, and the ratio of certain related PAHs indicate important pyrolytic and petrogenic sources. Further analysis showed that the distribution coefficient (K D ) increased with the particular organic carbon content of sediments, consistent with the PAH partition theory. The organic carbon normalised distribution coefficient (K oc ) also increased with the compounds' octanol/water partition coefficient (K ow ), confirming the potential applicability of the linear free energy relationships in the modelling and prediction of PAH behaviour in marine environments

Search for a Light Sterile Neutrino at Daya Bay

Science.gov (United States)

Wong, H. L. H.; Daya Bay Collaboration

2017-09-01

The Daya Bay reactor neutrino experiment’s unique configuration of multiple baselines from six 2.9 GW th nuclear reactors to eight antineutrino detectors deployed in two near (effective baselines ∼500 m and ∼600 m) and one far (effective baseline ∼1600 m) underground experimental halls makes it possible to look for oscillations with a fourth (sterile) neutrino in the {10}-3{{{ eV}}}2≲ |Δ {m}412|≲ 0.3{{{ eV}}}2 range. The relative spectral distortion due to the disappearance of electron antineutrinos was found to be consistent with that of the three-flavor oscillation model. The resulting limits on sin22θ 14 constitute the world’s best for the |Δ {m}412|≲ 0.2{{{ eV}}}2 region.

Modeling the fate of p,p'-DDT in water and sediment of two typical estuarine bays in South China: Importance of fishing vessels' inputs.

Science.gov (United States)

Fang, Shu-Ming; Zhang, Xianming; Bao, Lian-Jun; Zeng, Eddy Y

2016-05-01

Antifouling paint applied to fishing vessels is the primary source of dichloro-diphenyl-trichloroethane (DDT) to the coastal marine environments of China. With the aim to provide science-based support of potential regulations on DDT use in antifouling paint, we utilized a fugacity-based model to evaluate the fate and impact of p,p'-DDT, the dominant component of DDT mixture, in Daya Bay and Hailing Bay, two typical estuarine bays in South China. The emissions of p,p'-DDT from fishing vessels to the aquatic environments of Hailing Bay and Daya Bay were estimated as 9.3 and 7.7 kg yr(-1), respectively. Uncertainty analysis indicated that the temporal variability of p,p'-DDT was well described by the model if fishing vessels were considered as the only direct source, i.e., fishing vessels should be the dominant source of p,p'-DDT in coastal bay areas of China. Estimated hazard quotients indicated that sediment in Hailing Bay posed high risk to the aquatic system, and it would take at least 21 years to reduce the hazards to a safe level. Moreover, p,p'-DDT tends to migrate from water to sediment in the entire Hailing Bay and Daya Bay. On the other hand, our previous research indicated that p,p'-DDT was more likely to migrate from sediment to water in the maricultured zones located in shallow waters of these two bays, where fishing vessels frequently remain. These findings suggest that relocating mariculture zones to deeper waters would reduce the likelihood of farmed fish contamination by p,p'-DDT. Copyright © 2016 Elsevier Ltd. All rights reserved.

Concentrations and human health implications of heavy metals in wild aquatic organisms captured from the core area of Daya Bay's Fishery Resource Reserve, South China Sea.

Science.gov (United States)

Gu, Yang-Guang; Huang, Hong-Hui; Lin, Qin

2016-07-01

Heavy metal concentrations in edible organisms from the core area of Daya Bay's Fishery Resource Reserve, South China Sea, were determined. Samples of 14 crustacean, fish, and shellfish species were collected and analyzed. The As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn concentrations were 0.18-1.16, 0.002-0.919, 0.40-2.85, 0.07-4.10, 0.004-0.055, 0.14-1.19, 0.014-0.070, and 4.57-15.94μg/g wet weight, respectively. The As concentrations were higher than the Chinese maximum permissible levels in all of the fish and shellfish species and two crustacean species, indicating that consumption of these wild species by humans may pose health risks. However, calculations of the health risks posed to humans indicated that no significant adverse health effects would be associated with consuming these species. Copyright © 2016 Elsevier B.V. All rights reserved.

[Pollution by heavy metals in the petrochemical sewage waters of the sea area of Daya Bay and assessment on potential ecological risks].

Science.gov (United States)

Xu, Shan-Nan; Li, Chun-Hou; Xu, Jiao-Jiao; Xiao, Ya-Yuan; Lin, Lin; Huang, Xiao-Ping

2014-06-01

This study aimed to gain a clear understanding on the status of pollution by heavy metals in the petrochemical sewage and the potential ecological risk caused by heavy metal pollution in the sea area of Daya Bay. The contents and spatial distributions of heavy metals including Zn, Pb, Cu, Cd, Cr, As and Hg in seawater, sediment and fishes collected from Daya Bay were analyzed. The comprehensive pollution index (CPI) and ecological risk indexes (ERIs) were used to evaluate the contaminated severity and potential ecological risks of heavy metals in seawater and sediment. The results showed that the contents of these heavy metals, except for those of Zn and Pb, in several stations set in Daya Bay from 2011 to 2012 were relatively low, which were lower than the quality standard of class I according to the China National Standard Criteria for Seawater Quality, suggesting that the seawater in Daya Bay has not been polluted yet by these heavy metals. The average CPI of heavy metals in seawater during flooding season (0.72) was higher than that during dry season (0.38) whereas the average CPI of heavy metals in sediment during dry season (7.77) was higher than that during flooding season (5.70). Hg was found to be the primary contaminating heavy metal in sediment during dry season, which was followed by As and Zn whereas during flooding season, Hg was the primary contaminating metal in sediment, followed by Zn and Cu. The contents of these 7 heavy metals in fishes collected from the surveyed areas were lower than those of the standard requirements. A correlation analysis indicated that there were significant differences in the correlations between the midst of the heavy metals in sea water and the different periods. The ERIs of heavy metals in sediment during dry season (129.20) was higher than that during flooding season (102.86), and 25% of the sampling sites among all stations were under the risk of high-level alarm. The potential ERIs of heavy metals in sediment in

Levels and bioaccumulation of organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs) in fishes from the Pearl River estuary and Daya Bay, South China

International Nuclear Information System (INIS)

Guo Lingli; Qiu Yaowen; Zhang Gan; Zheng, Gene J.; Lam, Paul K.S.; Li Xiangdong

2008-01-01

Fifty fish samples were collected from the Pearl River estuary (PRE) and Daya Bay, South China and were analyzed for DDTs, HCHs, chlordanes and polybrominated biphenyl ethers (PBDEs). Except the high concentrations of DDT observed in fishes, the concentrations of HCHs, chlordanes and PBDEs were low when compared to other regions. BDE-47 was the predominant PBDE congener and the BDE-209 concentrations were relatively low, despite its high concentration in surface sediments. The absence of significant increase of DDT, HCH, chlordane and PBDE concentrations towards higher δ 15 N values, as well as the lack of a significant correlation (p 15 N, may indicate a weak biomagnification of these chemicals in the food webs. Good agreement was observed between their concentrations and lipid contents of the organisms. Bioconcentration was suggested to be responsible for the accumulation of OCPs and PBDEs in the lower trophic organisms in the studied subtropical waters. - Bioconcentration was suggested to be responsible for the accumulation of OCPs and PBDEs in the lower trophic organisms of subtropical waters

The preliminary success of ALARA implementation in Daya Bay NPP

International Nuclear Information System (INIS)

Yang Maochun; Chen Degan

2000-01-01

Based on the practical condition of the plant and in reference to advanced management experiences worldwide, Daya Bay Nuclear Power Plant has established its own peculiar management system for radiation protection management and ALARA implementation. The characteristics of the system are: radiation protection training to all workers, active involvement of all managers and staffs, and whole process safety control to maintenance activities. The management philosophy of 'workers are responsible for their own radiation safety' is adopted in the plant. A strict, formalized and systematic whole staff radiation protection training, evaluation, authorization and periodically refreshing mechanism had been established and executed in the plant. In the organizational point of view, the responsibilities of line managers were specified in plant procedures, ALARA coordination organization on plant level and for specific activities were established. Meanwhile, the plant highlighted the defining, following up, controlling and advertising of radiation protection targets. All these measures made radiation protection management be the responsibilities of a safety network in which whole staffs are involved. In the practical radiation protection activities, the plant focuses on works of high radiation risk and performs whole process control. In addition, professional radiation protection staff played an important and active role in technical advisory and control of radiation protection. Satisfactory results have been achieved in Daya Bay NPP in radiation protection in the past years. The collective dose including that of contractors per unit and year have been declining from 0.99 man·Sv/Unit·Year in 1995 to 0.667 man·Sv/Unit·Year in 1998, which were consistently lower than the best quartile result of PWR plants in WANO reports each year. Individual dose was also controlled at a very low level, no one was overexposed in the past years

33 CFR 100.124 - Maggie Fischer Memorial Great South Bay Cross Bay Swim, Great South Bay, New York.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Maggie Fischer Memorial Great South Bay Cross Bay Swim, Great South Bay, New York. 100.124 Section 100.124 Navigation and Navigable... NAVIGABLE WATERS § 100.124 Maggie Fischer Memorial Great South Bay Cross Bay Swim, Great South Bay, New York...

The design and test of VME clock distribution module of the Daya Bay RPC readout system

International Nuclear Information System (INIS)

Zhao Heng; Liang Hao; Zhou Yongzhao

2011-01-01

It describes the design of the VME Clock Distribution module of the Daya Bay RPC readout system, including the function and the hardware structure of the module and the logic design of the FPGA on the module. After the building and debugging of the module, a series of tests have been made to check its function and stability. (authors)

Status of the Daya Bay Reactor Neutrino Oscillation Experiment

International Nuclear Information System (INIS)

Lin, Cheng-Ju Stephen

2010-01-01

The last unknown neutrino mixing angle θ 13 is one of the fundamental parameters of nature; it is also a crucial parameter for determining the sensitivity of future long-baseline experiments aimed to study CP violation in the neutrino sector. Daya Bay is a reactor neutrino oscillation experiment designed to achieve a sensitivity on the value of sin 2 (2*θ 13 ) to better than 0.01 at 90% CL. The experiment consists of multiple identical detectors placed underground at different baselines to minimize systematic errors and suppress cosmogenic backgrounds. With the baseline design, the expected anti-neutrino signal at the far site is about 360 events per day and at each of the near sites is about 1500 events per day. An overview and current status of the experiment will be presented.

Nutrient inputs through submarine groundwater discharge in an embayment: A radon investigation in Daya Bay, China

Science.gov (United States)

Wang, Xuejing; Li, Hailong; Yang, Jinzhong; Zheng, Chunmiao; Zhang, Yan; An, An; Zhang, Meng; Xiao, Kai

2017-08-01

Daya Bay, a semi-closed bay of the South China Sea, is famous for its aquaculture, agriculture and tourism. Although routine environmental investigations in the bay have been conducted since the early 1980s, evaluations of submarine groundwater discharge (SGD), an important process in exchange between groundwater and coastal seawater, and its environmental impacts have never been reported. In this study, naturally occurring radon isotope (222Rn) was measured continuously at two sites (north-west and middle-east sites) and used as a tracer to estimate SGD and associated nutrient inputs into the bay. The SGD rates estimated based on the 222Rn mass balance model were, on average, 28.2 cm/d at north-west site and 30.9 cm/d at middle-east site. The large SGD rate at middle-east site may be due to the large tidal amplitude and the sandy component with high permeability in sediments. The SGD-driven nutrient fluxes, which were calculated as the product of SGD flux and the difference of nutrient concentrations between coastal groundwater and seawater, were 3.28 × 105 mol/d for dissolved nitrates (NO3-N), 5.84 × 103 mol/d for dissolved inorganic phosphorous (DIP), and 8.97 × 105 mol/d for reactive silicate (Si). These nutrient inputs are comparable to or even higher than those supplied by local rivers. In addition, these SGD-driven nutrients have a nitrogen-phosphorous ratio as high as ∼43, which may significantly affect the ecology of coastal waters and lead to frequent occurrence of harmful algal blooms.

Quality assurance of Daya Bay Nuclear Power Plant in operations phase

International Nuclear Information System (INIS)

Cai Kangyuan

2000-01-01

The author introduces the responsibilities and functions of QA Department in Daya Bay Nuclear Power Station. It describes how QAD verifies the effectiveness of implementation of QA Program through its main QA activities: QA audits and QA surveillances. It also describes the quality deficiency classification, follow up and verification system, and its reporting system. It explains how QAD provides its supports and services to functional branches at the same time when it maintains its independence. At last it briefly introduces how QAD pushes Management Self Assessment activities in the Plant scope when performance based quality assurance is implemented and how it exercises real time QA monitoring activity during outage

In core reload design for cycle 4 of Daya Bay nuclear power station both units

International Nuclear Information System (INIS)

Zhang Zongyao; Liu Xudong; Xian Chunyu; Li Dongsheng; Zhang Hong; Liu Changwen; Rui Min; Wang Yingming; Zhao Ke; Zhang Hong; Xiao Min

1998-01-01

The basic principles and the contents of the reload design for Daya Bay nuclear power station are briefly introduced. The in core reload design results, and the comparison between the calculated values and the measured values of both units the fourth cycle are also given. The reload design results of the two units satisfy all the economic requirements and safety criteria. The experimented results shown that the predicated values are tally good with all the measurement values

ZOOPLANKTON COMMUNITY STRUCTURE OF THE SEA SURFACE MICROLAYER NEAR NUCLEAR POWER PLANTS AND MARINE FISH CULTURE ZONES IN DAYA BAY

Institute of Scientific and Technical Information of China (English)

杨宇峰; 王肇鼎; 潘明祥; 焦念志

2002-01-01

The authors' surveys in May-June 1999 (two cruises) at six sampling stations near nuclear power plants (NPP) and marine fish culture zones in Daya Bay, Guangdong, revealed species composition, densities and body-size of thesea surface microlayer (SM) zooplankton (>35 μm). Results showed that protozoans and copepod nauplii were the predominant components, accounting for 65.40% to95.56% of total zooplankton in abundance. The size-frequency distributions showed that the frequency of micro-zooplankton (0.02-0.2 mm) reached 0.8235. The SM zooplankton community structure revealed in the present study was quite different from that revealed by investigations in the 1980s in Daya Bay. Difference of sampling method has important influence on the obtained zooplankton community structure. SM zooplankton consisted of micro- and mesozooplankton (0.2-2.0 mm), with micro-zooplankton being predominant. Some possible cause-effect relations between the zooplankton community structure and mariculture, nuclear power plants cooling systems and sampling method are discussed.``

Bioaccumulation of heavy metals both in wild and mariculture food chains in Daya Bay, South China

Science.gov (United States)

Qiu, Yao-Wen

2015-09-01

Bioaccumulation and trophic transfer of heavy metals both in the natural marine ecosystem (seawater, sediment, coral reef, phytoplankton, macrophyte, shrimp, crab, shellfish, planktivorous and carnivorous fish) and in the mariculture ecosystem (compound feed, trash fish, farmed pompano and snapper) were studied at Daya Bay, a typical subtropical bay in Southern China. The levels of Cu, Zn, Pb and Cd in sediment were 11.7, 10.2, 53.8 and 2.8 times than those in coral reef, respectively. Pb and Zn levels were markedly higher in phytoplankton than in macrophyte, probably caused by the larger specific surface area in phytoplankton. The highest levels of Zn (98.1), Pb (1.87) and Cd (5.11 μg g-1 dw) in wild organisms were all found in clam (Veremolpa scabra), indicating that these metals were apt to bioaccumulate in shellfish. The average concentrations of Cu, Zn, Pb and Cd in wild fish were 3.7, 2.1, 0.4 and 22.2 times than those in farmed fish, confirming the "growth dilution" hypothesis in farmed fish. Heavy metal bioconcentration factors (BCFs) in algae, bioaccumulation factors (BAFs) in wild species and transfer factors (TFs) in organism were calculated and discussed. The results suggested that biologically essential Cu and Zn were easier to accumulate in fish than non-essential Cd. Concentrations of Cu, Zn and Cd were several times higher in wild fish than in farmed fish whereas the opposite was observed for Pb. This metal also showed the highest transfer factor from food, which means that special attention must be given to fish feed production in relation to metal contamination.

Improved measurement of electron antineutrino disappearance at Daya Bay

International Nuclear Information System (INIS)

An Fengpeng; Bai Jingzhi; An Qi

2013-01-01

We report an improved measurement of the neutrino mixing angle θ13 from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for sin 2 2θ 13 with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GW th were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is 0.944±0.007(stat.)±0.003(syst.). An analysis of the relative rates in six detectors finds sin 2 2θ 13 =0.089±0.010(stat.)±0.005(syst.) in a three-neutrino framework. (authors)

Study on the 90Sr absorption by agricultural plants grown in soil from Daya Bay and Qinshan area

International Nuclear Information System (INIS)

Zhao Wenhu; Hou Lanxin; Xu Shiming

1991-03-01

The soil around the Qinshan and Daya Bay nuclear power plants were used in this study. The 90 Sr was spread into the soil by irrigation. The amount of 90 Sr spread were 0.037, 0.37, 3.7 and 370 Bq per gram soil respectively. After being treated, the soil were employed to grow rice, wheat, rape, bean, asparagus lettuce, tomato and peas. The harvested plants were divided into seeds, stems and leaves, husks and roots to measure their radioactivity separately. The results showed that the amount of 90 Sr absorbed by the plants was directly proportional to the 90 Sr content in the soil. The absorbed 90 Sr was mainly distributed in the stems and leaves. The seeds absorbed the least amount of 90 Sr compared with the other portions. The old leaves absorbed greater 90 Sr than the buds. The accumulated 90 Sr per unit dry weight of all plants grown in the soil from Daya Bay area was greater than in the soil from Qinshan area. More than 80% of total 90 Sr was distributed in the top layer from 0 to 4 cm. The concentration factors of various plants were also given

Quality assurance in the construction phase of the Guangdong Daya Bay Nuclear Power Plant

International Nuclear Information System (INIS)

Chen Heling; Zou Xiaoshun

1994-11-01

The quality assurance system of Guangdong Daya Bay Nuclear Power Plant during construction phase is briefly introduced. It includes the quality assurance organization and multiple quality control system of the owner (GNPJVC) and contractors. The status of the programmes implementation has been also described through presenting of some important quality assurance activities such as quality surveillance, QA audit and nonconformance control. In addition, the effectiveness of GNPP Construction QA Program has been analyzed and evaluated and both positive and negative experience have been summarized which could be used for reference by the nuclear power constructors. (6 figs.)

Quality assurance in the construction phase of the Guangdong Daya Bay Nuclear Power Plant

Energy Technology Data Exchange (ETDEWEB)

Heling, Chen; Xiaoshun, Zou [Guangdong Nuclear Power Joint Venture Company (China)

1994-11-01

The quality assurance system of Guangdong Daya Bay Nuclear Power Plant during construction phase is briefly introduced. It includes the quality assurance organization and multiple quality control system of the owner (GNPJVC) and contractors. The status of the programmes implementation has been also described through presenting of some important quality assurance activities such as quality surveillance, QA audit and nonconformance control. In addition, the effectiveness of GNPP Construction QA Program has been analyzed and evaluated and both positive and negative experience have been summarized which could be used for reference by the nuclear power constructors. (6 figs.).

18-months fuel cycle engineering and its project management of the Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Fu Xiangang; Jiao Ping; Liu Yong; Wu Zhiming

2002-01-01

The author introduces aspects related to the performing of 18-months fuel cycle engineering evaluation to the Daya Bay nuclear power plant, including the assessment on proposed technical solutions, appointment to the contractors, breaking down and implementation of project, experience on the project management and risk control, and etc. And it also briefs the prompting to the localization of the long fuel cycle engineering technology and AFA 3G fuel manufacturing and design technology via adequate technology transferring of this project

Seasonal variation of the underground cosmic muon flux observed at Daya Bay

Science.gov (United States)

An, F. P.; Balantekin, A. B.; Band, H. R.; Bishai, M.; Blyth, S.; Cao, D.; Cao, G. F.; Cao, J.; Chan, Y. L.; Chang, J. F.; Chang, Y.; Chen, H. S.; Chen, Q. Y.; Chen, S. M.; Chen, Y. X.; Chen, Y.; Cheng, J.; Cheng, Z. K.; Cherwinka, J. J.; Chu, M. C.; Chukanov, A.; Cummings, J. P.; Ding, Y. Y.; Diwan, M. V.; Dolgareva, M.; Dove, J.; Dwyer, D. A.; Edwards, W. R.; Gill, R.; Gonchar, M.; Gong, G. H.; Gong, H.; Grassi, M.; Gu, W. Q.; Guo, L.; Guo, X. H.; Guo, Y. H.; Guo, Z.; Hackenburg, R. W.; Hans, S.; He, M.; Heeger, K. M.; Heng, Y. K.; Higuera, A.; Hsiung, Y. B.; Hu, B. Z.; Hu, T.; Huang, E. C.; Huang, H. X.; Huang, X. T.; Huber, P.; Huo, W.; Hussain, G.; Jaffe, D. E.; Jen, K. L.; Jetter, S.; Ji, X. P.; Ji, X. L.; Jiao, J. B.; Johnson, R. A.; Jones, D.; Kang, L.; Kettell, S. H.; Khan, A.; Kohn, S.; Kramer, M.; Kwan, K. K.; Kwok, M. W.; Kwok, T.; Langford, T. J.; Lau, K.; Lebanowski, L.; Lee, J.; Lee, J. H. C.; Lei, R. T.; Leitner, R.; Li, C.; Li, D. J.; Li, F.; Li, G. S.; Li, Q. J.; Li, S.; Li, S. C.; Li, W. D.; Li, X. N.; Li, X. Q.; Li, Y. F.; Li, Z. B.; Liang, H.; Lin, C. J.; Lin, G. L.; Lin, S.; Lin, S. K.; Lin, Y.-C.; Ling, J. J.; Link, J. M.; Littenberg, L.; Littlejohn, B. R.; Liu, J. L.; Liu, J. C.; Loh, C. W.; Lu, C.; Lu, H. Q.; Lu, J. S.; Luk, K. B.; Ma, X. Y.; Ma, X. B.; Ma, Y. Q.; Malyshkin, Y.; Martinez Caicedo, D. A.; McDonald, K. T.; McKeown, R. D.; Mitchell, I.; Nakajima, Y.; Napolitano, J.; Naumov, D.; Naumova, E.; Ngai, H. Y.; Ochoa-Ricoux, J. P.; Olshevskiy, A.; Pan, H.-R.; Park, J.; Patton, S.; Pec, V.; Peng, J. C.; Pinsky, L.; Pun, C. S. J.; Qi, F. Z.; Qi, M.; Qian, X.; Qiu, R. M.; Raper, N.; Ren, J.; Rosero, R.; Roskovec, B.; Ruan, X. C.; Sebastiani, C.; Steiner, H.; Sun, J. L.; Tang, W.; Taychenachev, D.; Treskov, K.; Tsang, K. V.; Tull, C. E.; Viaux, N.; Viren, B.; Vorobel, V.; Wang, C. H.; Wang, M.; Wang, N. Y.; Wang, R. G.; Wang, W.; Wang, X.; Wang, Y. F.; Wang, Z.; Wang, Z.; Wang, Z. M.; Wei, H. Y.; Wen, L. J.; Whisnant, K.; White, C. G.; Whitehead, L.; Wise, T.; Wong, H. L. H.; Wong, S. C. F.; Worcester, E.; Wu, C.-H.; Wu, Q.; Wu, W. J.; Xia, D. M.; Xia, J. K.; Xing, Z. Z.; Xu, J. L.; Xu, Y.; Xue, T.; Yang, C. G.; Yang, H.; Yang, L.; Yang, M. S.; Yang, M. T.; Yang, Y. Z.; Ye, M.; Ye, Z.; Yeh, M.; Young, B. L.; Yu, Z. Y.; Zeng, S.; Zhan, L.; Zhang, C.; Zhang, C. C.; Zhang, H. H.; Zhang, J. W.; Zhang, Q. M.; Zhang, X. T.; Zhang, Y. M.; Zhang, Y. X.; Zhang, Y. M.; Zhang, Z. J.; Zhang, Z. Y.; Zhang, Z. P.; Zhao, J.; Zhou, L.; Zhuang, H. L.; Zou, J. H.

2018-01-01

The Daya Bay Experiment consists of eight identically designed detectors located in three underground experimental halls named as EH1, EH2, EH3, with 250, 265 and 860 meters of water equivalent vertical overburden, respectively. Cosmic muon events have been recorded over a two-year period. The underground muon rate is observed to be positively correlated with the effective atmospheric temperature and to follow a seasonal modulation pattern. The correlation coefficient α, describing how a variation in the muon rate relates to a variation in the effective atmospheric temperature, is found to be αEH1 = 0.362±0.031, αEH2 = 0.433±0.038 and αEH3 = 0.641±0.057 for each experimental hall.

Improved Measurement of Electron-antineutrino Disappearance at Daya Bay

International Nuclear Information System (INIS)

Dwyer, D.A.

2013-01-01

With 2.5× the previously reported exposure, the Daya Bay experiment has improved the measurement of the neutrino mixing parameter sin 2 2θ 13 =0.089±0.010(stat)±0.005(syst). Reactor anti-neutrinos were produced by six 2.9 GW th commercial power reactors, and measured by six 20-ton target-mass detectors of identical design. A total of 234,217 anti-neutrino candidates were detected in 127 days of exposure. An anti-neutrino rate of 0.944±0.007(stat)±0.003(syst) was measured by three detectors at a flux-weighted average distance of1648 m from the reactors, relative to two detectors at 470 m and one detector at 576 m. Detector design and depth underground limited the background to 5±0.3% (far detectors) and 2±0.2% (near detectors) of the candidate signals. The improved precision confirms the initial measurement of reactor anti-neutrino disappearance, and continues to be the most precise measurement of θ 13

Improved Measurement of Electron-antineutrino Disappearance at Daya Bay

Energy Technology Data Exchange (ETDEWEB)

Dwyer, D.A. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

2013-02-15

With 2.5× the previously reported exposure, the Daya Bay experiment has improved the measurement of the neutrino mixing parameter sin{sup 2}2θ{sub 13}=0.089±0.010(stat)±0.005(syst). Reactor anti-neutrinos were produced by six 2.9 GW{sub th} commercial power reactors, and measured by six 20-ton target-mass detectors of identical design. A total of 234,217 anti-neutrino candidates were detected in 127 days of exposure. An anti-neutrino rate of 0.944±0.007(stat)±0.003(syst) was measured by three detectors at a flux-weighted average distance of1648 m from the reactors, relative to two detectors at 470 m and one detector at 576 m. Detector design and depth underground limited the background to 5±0.3% (far detectors) and 2±0.2% (near detectors) of the candidate signals. The improved precision confirms the initial measurement of reactor anti-neutrino disappearance, and continues to be the most precise measurement of θ{sub 13}.

Study of a prototype detector for the Daya Bay neutrino experiment

International Nuclear Information System (INIS)

Wang Zhimin; Yang Changgen; Guan Mengyun; Zhong Weili; Liu Jinchang; Zhang Zhiyong; Ding Yayun; Wang Ruiguang; Cao Jun; Wang Yifang; Lu Haoqi

2009-01-01

The Daya Bay reactor neutrino experiment is designed to precisely measure the neutrino mixing angle θ 13 . In order to study the details of the detector response and finalize the detector design, a prototype neutrino detector with a scale of 1/3 in diameter is constructed at the Institute of High Energy Physics (IHEP), Beijing. The detector is viewed by 45 8'' photomultipliers, which are calibrated by LED light pulse. The energy response of the detector, including the resolution, linearity, spatial uniformity, etc., is studied by radioactive sources 133 Ba, 137 Cs, 60 Co, and 22 Na at various locations of the detector. The measurement shows that the detector, particularly the specially designed optical reflectors, works as expected. A Monte Carlo simulation based on the Geant4 package shows a good agreement with the experimental data.

Solid radioactive waste management in Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Huang Laixi; He Wenxin; Chen Degan

2004-01-01

This paper introduces the solid radwaste management system, treatment methods and its continuous improvement during the past 9 years in Guangdong Daya Bay Nuclear Power Station (GNPS). GNPS has paid great attention and made a lot of efforts to implement the principle of waste minimization with source control, improvement of treatment process and strict management, so the output of solid radwastes has annually decreased since 1994. In 2002, the output of solid radwastes in GNPS was 63.5 m 3 , only 50% of 1995 (127 m 3 ), reached the advanced level as the same type NPPs in France. During the period 1994-2002, the accumulated production of solid radwaste Packages in GNPS is 1563.51 m 3 only 18% of the design value; all the packages meet the standard and requirement for safe disposal. Besides, this paper analyzes some new technical processes and presents some proposals for further decreasing the solid radwaste production

Occurrence of marine algal toxins in oyster and phytoplankton samples in Daya Bay, South China Sea.

Science.gov (United States)

Jiang, Tao; Liu, Lei; Li, Yang; Zhang, Jing; Tan, Zhijun; Wu, Haiyan; Jiang, Tianjiu; Lu, Songhui

2017-09-01

The occurrence and seasonal variations of marine algal toxins in phytoplankton and oyster samples in Daya Bay (DYB), South China Sea were investigated. Two Dinophysis species, namely, D. caudata and D. acuminata complex, were identified as Okadaic acid (OA)/pectenotoxin (PTX) related species. Liquid chromatography with tandem mass spectrometry (LC-MS/MS) analysis demonstrated that 2.04-14.47 pg PTX2 per cell was the predominant toxin in single-cell isolates of D. caudata. D. acuminata was not subjected to toxin analysis. The occurrence of OAs in phytoplankton concentrates of net-haul sample coincided with the presence of D. accuminata complex, suggesting that this species is most likely an OA producer in this sea area. OA, dinophysistoxins-1 (DTX1), PTX2, PTX2sa, gymnodimine (GYM), homoyessotoxin (homoYTX), and domoic acid (DA) demonstrated positive results in net haul samples. To our best knowledge, this paper is the first to report the detection of GYM, DA, and homoYTX in phytoplankton samples in Chinese coastal waters. Among the algal toxins, GYM demonstrated the highest frequency of positive detections in phytoplankton concentrates (13/17). Five compounds of algal toxins, including OA, DTX1, PTX2, PTX2sa, and GYM, were detected in oyster samples. DA and homoYTX were not detected in oysters despite of positive detections for both in the phytoplankton concentrates. However, neither the presence nor absence of DA in oysters can be determined because extraction conditions with 100% methanol used to isolate toxins from oysters (recommended by the EU-Harmonised Standard Operating Procedure, 2015) would likely be unsuitable for this water-soluble toxin. In addition, transformation of DA during the digestion process of oysters may also be involved in the negative detections of this toxin. GYM exhibited the highest frequency of positive results in oysters (14/17). OAs were only detected in the hydrolyzed oyster samples. The detection rates of PTX and PTX2sa in

Characterizing the parent and alkyl polycyclic aromatic hydrocarbons in the Pearl River Estuary, Daya Bay and northern South China Sea: Influence of riverine input

International Nuclear Information System (INIS)

Yuan, Ke; Wang, Xiaowei; Lin, Li; Zou, Shichun; Li, Yan; Yang, Qingshu; Luan, Tiangang

2015-01-01

Distributions of 31 parent polycyclic aromatic hydrocarbons (PAHs) and 29 alkyl PAHs in surface sediments of the Pearl River Estuary (PRE), Daya Bay (DYB) and northern South China Sea (SCS) were examined to study the influence of riverine input. It was found that the contributions of riverine input to sediment PAHs in PRE was much higher than other areas. However, higher proportion of alkyl PAHs and low molecular weight PAHs in DYB and the northern SCS was observed, indicating their different sources. Nevertheless, the sediment PAHs in PRE were heterogeneous and affected by the hydrodynamic conditions. The high molecular weight PAHs were dominant in PRE and enriched in the depositional area of suspended particular matter (SPM). Moreover, the concentration of PAHs in SPM was similar to those in surface sediments and dominated in water columns. Therefore, SPM played a very important role in transportation and distribution of PAHs in PRE. - Highlights: • EPA 16 PAHs contributed a small amount of total PAHs. • Alkyl PAHs showed different behaviors from parent PAHs. • High weight PAHs preferably indicated riverine input. • PAHs distribution in sediment was related with the suspended particle deposition. - Suspended particular matter played a very important role in distribution of PAHs in tide-dominated estuary and alkyl PAHs showed different behavior from parent PAHs

Structure design of human factor data management system for Daya Bay NPP

International Nuclear Information System (INIS)

Zhang Li; Zhang Ning; Guo Jianbing; Huang Weigang; Zhu Minhong; Wang Jin

2000-01-01

Collection, analysis and quantification of human factor data are important compositions of human reliability analysis (HRA) and probabilistic risk assessment (PRA). Various human factor databases have been set up, but there are comparatively little human factor data management systems which can be uses for collection, classification, analysis, calculation and predication of the human factor data. Therefore, the human factor data management system for Daya Bay NPP is developed, with the following three modules and four databases: original data module, computing module, introduced data module, and basic database, other data source of the plant, external database and introduced database. The foundational problems about human factor data and the systemic structure and function are described. The data structure in the database is also discussed, because it is of the most importance in the system

Cause analysis and preventives for human error events in Daya Bay NPP

International Nuclear Information System (INIS)

Huang Weigang; Zhang Li

1998-01-01

Daya Bay Nuclear Power Plant is put into commercial operation in 1994 Until 1996, there are 368 human error events in operating and maintenance area, occupying 39% of total events. These events occurred mainly in the processes of maintenance, test equipment isolation and system on-line, in particular in refuelling and maintenance. The author analyses root causes for human errorievents, which are mainly operator omission or error procedure deficiency; procedure not followed; lack of training; communication failures; work management inadequacy. The protective measures and treatment principle for human error events are also discussed, and several examples applying them are given. Finally, it is put forward that key to prevent human error event lies in the coordination and management, person in charge of work, and good work habits of staffs

Leakage Tests of the Stainless Steel Vessels of the Antineutrino Detectors in the Daya Bay Reactor Neutrino Experiment

OpenAIRE

Chen, Xiaohui; Luo, Xiaolan; Heng, Yuekun; Wang, Lingshu; Tang, Xiao; Ma, Xiaoyan; Zhuang, Honglin; Band, Henry; Cherwinka, Jeff; Xiao, Qiang; Heeger, Karsten M.

2012-01-01

The antineutrino detectors in the Daya Bay reactor neutrino experiment are liquid scintillator detectors designed to detect low energy particles from antineutrino interactions with high efficiency and low backgrounds. Since the antineutrino detector will be installed in a water Cherenkov cosmic ray veto detector and will run for 3 to 5 years, ensuring water tightness is critical to the successful operation of the antineutrino detectors. We choose a special method to seal the detector. Three l...

Summarization of radioactive effluent monitoring in Daya Bay Nuclear Power Station 1994-2002

International Nuclear Information System (INIS)

Ouyang Junjie; Chen Yue

2004-01-01

This paper introduces the radioactive effluent monitoring systems, measurement and quality control methods used in Daya Bay Nuclear Power Station from its commercial operation in 1994. The main work and experiences for the management of effluent release are discussed and analyzed. The radwaste data appear declining trend and are far blow the annual limit approved by the national Environmental Protection Bureau since 1995. The normalized release (unit GBq/GWa) of 9 years is as follows: liquid nuclides (except tritium) 11.1, liquid tritium 1.91 x 10 4 , noble gas 2.03 x 10 4 , halogen 0.13, aerosol 7.57 x 10 -3 . For 110m Ag, the average release from 1998 to 2002 has been reduced to 1/7 of the quantity in 1997

Automated calibration system for a high-precision measurement of neutrino mixing angle θ13 with the Daya Bay antineutrino detectors

International Nuclear Information System (INIS)

Liu, J.; Cai, B.; Carr, R.; Dwyer, D.A.; Gu, W.Q.; Li, G.S.; Qian, X.; McKeown, R.D.; Tsang, R.H.M.; Wang, W.; Wu, F.F.; Zhang, C.

2014-01-01

We describe the automated calibration system for the antineutrino detectors in the Daya Bay Neutrino Experiment. This system consists of 24 identical units instrumented on 8 identical 20-ton liquid scintillator detectors. Each unit is a fully automated robotic system capable of deploying an LED and various radioactive sources into the detector along given vertical axes. Selected results from performance studies of the calibration system are reported

The root cause analysis of 9DVN002ZV fan failure in Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Guan Jianjun; Zhang Mingjia

2005-01-01

Extensive investigations and detailed analysis of the failure reason of 9DVN002ZV fan in Daya Bay Nuclear Power Station showed that the fan destroy was caused by the failure of non-drive end bear. The direct cause of this bearing' failure was its improper assembly caused by improper maintenance procedure, and the root cause was too small internal radial clearance after mounting. The factor affecting bearing internal radial clearance, the relationship between clearance and operating life time and fan failure process were discussed. (authors)

The human factor data management system of Daya Bay Nuclear Power Station

International Nuclear Information System (INIS)

Zhang Li; Zhang Ning; Guo Jianbing; Huang Weigang; Zhu Minhong; Wang Jin

1999-12-01

The collection, analysis and quantification of human factor data are very important parts of human reliability analysis and probabilistic risk assessment. Therefore various human databases have been created. But a human data management system with the functions of data collection, classification, analysis, computation and forecast is scarcely seen at home and abroad. So the authors have developed the human data management system of Daya Bay Nuclear Power Station. The system includes three modules and four databases. The authors firstly set forth some basic problems on the human factor data, which are concerned during the development of the system. Then the structure and function of the system are described. In view of the important role of human factor databases in the system, the authors also discuss the structure problems of the data in the databases in detail

Automated calibration system for a high-precision measurement of neutrino mixing angle θ{sub 13} with the Daya Bay antineutrino detectors

Energy Technology Data Exchange (ETDEWEB)

Liu, J., E-mail: jianglai.liu@sjtu.edu.cn [Department of Physics, Shanghai Jiao Tong University, Shanghai (China); Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Cai, B.; Carr, R. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Dwyer, D.A. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Gu, W.Q.; Li, G.S. [Department of Physics, Shanghai Jiao Tong University, Shanghai (China); Qian, X. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Brookhaven National Laboratory, Upton, NY (United States); McKeown, R.D. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Department of Physics, College of William and Mary, Williamsburg, VA (United States); Tsang, R.H.M. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Wang, W. [Department of Physics, College of William and Mary, Williamsburg, VA (United States); Wu, F.F. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Zhang, C. [Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, CA (United States); Brookhaven National Laboratory, Upton, NY (United States)

2014-06-01

We describe the automated calibration system for the antineutrino detectors in the Daya Bay Neutrino Experiment. This system consists of 24 identical units instrumented on 8 identical 20-ton liquid scintillator detectors. Each unit is a fully automated robotic system capable of deploying an LED and various radioactive sources into the detector along given vertical axes. Selected results from performance studies of the calibration system are reported.

Diffusion of Nitrogen and Phosphorus Across the Sediment-Water Interface and In Seawater at Aquaculture Areas of Daya Bay, China

Directory of Open Access Journals (Sweden)

Xiangju Cheng

2014-01-01

Full Text Available With the yearly increasing marine culture activities in floating cages in Daya Bay, China, the effects of pollution may overlap and lead to more severe water environmental problems. In order to track the impacts of the marine culture in floating cages on water environment, sediments and overlying water were sampled by cylindrical samplers at three representative aquaculture areas of Daya Bay. The water content, porosity, density of sediments as well as the vertical distributions of ammonia nitrogen and active phosphate in pore water along sediments depth were measured. The release rate and annual released quantity of the nutrients across sediment-water interface were calculated using Fick’s Law. A horizontal two-dimensional mathematical model was developed to compute the spatial and temporal distributions of the nutrients in seawater after being released across the sediment-water interface. The results showed that the sediments, with a high content and a large annual released quantity of nitrogen and phosphorus, constitute a potential inner source of seawater pollution. Influenced by tide and water depth, the scope of diffusion and migration of the nutrients appears as a long belt which is about 1 km long and 50 m wide. Seawater in this area is vulnerable to eutrophication.

Bilateral cooperation and technology transfer between France and China at Daya-Bay, Qinshan II and Yibin

International Nuclear Information System (INIS)

Ma Fubanf; Zenf Wenxing; He Jiacheng; Charbonneau, S.; Darolles, J.F.; Ellia, G.; Freslon, H.

1994-01-01

The Daya-Bay nuclear power station in Guangdong Province, The Qinshan phase II nuclear power station in Zhejiang Province, and the fuel manufacturing facility at Yibin in Sichuan Province have all afforded Framatome the opportunity to develop wide-ranging bilateral cooperation and technology transfer with the People's Republic of china. These projects are all good examples of how a country with some nuclear power experience, such as the now-operating Qinshan 1 (300 M We) nuclear power unit designed and build by China itself, can make much more rapid progress in its civil nuclear power program through cooperation with an industry leader, such as Framatome

Application of GO methodology in reliability analysis of offsite power supply of Daya Bay NPP

International Nuclear Information System (INIS)

Shen Zupei; Li Xiaodong; Huang Xiangrui

2003-01-01

The author applies the GO methodology to reliability analysis of the offsite power supply system of Daya Bay NPP. The direct quantitative calculation formulas of the stable reliability target of the system with shared signals and the dynamic calculation formulas of the state probability for the unit with two states are derived. The method to solve the fault event sets of the system is also presented and all the fault event sets of the outer power supply system and their failure probability are obtained. The resumption reliability of the offsite power supply system after the stability failure of the power net is also calculated. The result shows that the GO methodology is very simple and useful in the stable and dynamic reliability analysis of the repairable system

Testing violation of the Leggett-Garg-type inequality in neutrino oscillations of the Daya Bay experiment

Science.gov (United States)

Fu, Qiang; Chen, Xurong

2017-11-01

The Leggett-Garg inequality (LGI), derived under the assumption of realism, acts as the temporal Bell inequality. It is studied in electromagnetic and strong interaction like photonics, superconducting qubits and nuclear spin. The weak interaction two-state oscillations of neutrinos affirmed the violation of Leggett-Garg-type inequalities (LGtI). We make an empirical test for the deviation of experimental results with the classical limits by analyzing the survival probability data of reactor neutrinos at a distinct range of baseline dividing energies, as an analog to a single neutrino detected at different times. A study of the updated data of the Daya Bay experiment unambiguously depicts an obvious cluster of data over the classical bound of LGtI and shows a 6.1σ significance of the violation of them.

Testing violation of the Leggett-Garg-type inequality in neutrino oscillations of the Daya Bay experiment

International Nuclear Information System (INIS)

Fu, Qiang; Chen, Xurong

2017-01-01

The Leggett-Garg inequality (LGI), derived under the assumption of realism, acts as the temporal Bell inequality. It is studied in electromagnetic and strong interaction like photonics, superconducting qubits and nuclear spin. The weak interaction two-state oscillations of neutrinos affirmed the violation of Leggett-Garg-type inequalities (LGtI). We make an empirical test for the deviation of experimental results with the classical limits by analyzing the survival probability data of reactor neutrinos at a distinct range of baseline dividing energies, as an analog to a single neutrino detected at different times. A study of the updated data of the Daya Bay experiment unambiguously depicts an obvious cluster of data over the classical bound of LGtI and shows a 6.1σ significance of the violation of them. (orig.)

Testing violation of the Leggett-Garg-type inequality in neutrino oscillations of the Daya Bay experiment

Energy Technology Data Exchange (ETDEWEB)

Fu, Qiang [Chinese Academy of Sciences, Institute of Modern Physics, Lanzhou (China); Lanzhou University, Lanzhou (China); University of Chinese Academy of Sciences, Beijing (China); Chen, Xurong [Chinese Academy of Sciences, Institute of Modern Physics, Lanzhou (China)

2017-11-15

The Leggett-Garg inequality (LGI), derived under the assumption of realism, acts as the temporal Bell inequality. It is studied in electromagnetic and strong interaction like photonics, superconducting qubits and nuclear spin. The weak interaction two-state oscillations of neutrinos affirmed the violation of Leggett-Garg-type inequalities (LGtI). We make an empirical test for the deviation of experimental results with the classical limits by analyzing the survival probability data of reactor neutrinos at a distinct range of baseline dividing energies, as an analog to a single neutrino detected at different times. A study of the updated data of the Daya Bay experiment unambiguously depicts an obvious cluster of data over the classical bound of LGtI and shows a 6.1σ significance of the violation of them. (orig.)

Submarine groundwater discharge as an important nutrient source influencing nutrient structure in coastal water of Daya Bay, China

Science.gov (United States)

Wang, Xuejing; Li, Hailong; Zheng, Chunmiao; Yang, Jinzhong; Zhang, Yan; Zhang, Meng; Qi, Zhanhui; Xiao, Kai; Zhang, Xiaolang

2018-03-01

As an important nutrient source for coastal waters, submarine groundwater discharge (SGD) has long been largely ignored in Daya Bay, China. In this study, we estimate the fluxes of SGD and associated nutrients into this region using a 224Ra mass balance model and assess the contribution/importance of nutrients by SGD, benthic sediments, local rivers, and atmospheric deposition. The results of 224Ra mass balance show that the estimated SGD ranges from (2.76 ± 1.43) × 106 m3/d to (1.03 ± 0.53) × 107 m3/d with an average of (6.32 ± 2.42) × 106 m3/d, about 16 times the total discharge rate of local rivers. The nutrient loading from SGD is estimated to be (1.05-1.99) × 105 mol/d for NO3-N, (4.04-12.16) × 103 mol/d for DIP, and (3.54-11.35) × 105 mol/d for Si. Among these considered nutrient sources, we find that SGD is the primary source for Si and NO3-N, contributing 68% and 42% of all considered sources, respectively. The atmospheric NO3-N flux is comparable to that from SGD. The local rivers are the most important source for DIP, contributing 75% of all considered sources. SGD with high N:P ratio (NO3-N/DIP) of 37.0 delivers not only a large quantity of nutrients, but also changes nutrient structure in coastal water. Based on a DIP budget, primary productivity is evaluated to be 54-73 mg C/m2 d, in which SGD accounts for approximately 30% of total production. This study indicates that SGD is a key source of nutrients to coastal waters and may cause an obvious change of primary production and nutrient structure in Daya Bay.

The reactor core configuration and important systems related to physics tests of Daya Bay NPP

International Nuclear Information System (INIS)

Tao Shaoping

1995-06-01

A brief introduction to reactor core configuration and important systems related to physics tests of Daya Bay NPP is given. These systems involve the reactor core system (COR), the full length rod control system (RGL), the in-core instrumentation system (RIC), the out-of-core nuclear instrumentation system (RPN), and the LOCA surveillance system (LSS), the centralized data processing system (KIT) and the test data acquisition system (KDO). In addition, that the adjustment and evaluation of boron concentration related to other systems, for example the reactor coolant system (RCP), the chemical and volume control system (RCV), the reactor boron and water makeup system (REA), the nuclear sampling system (REN) and the reactor control system (RRC), etc. is also described. Analysis of these systems helps not only to familiarize their functions and acquires a deepen understanding for the principle procedure, points for attention and technical key of the core physics tests, but also to further analyze the test results. (3 refs., 11 figs., 1 tab.)

The onset of deglaciation of Cumberland Bay and Stromness Bay, South Georgia

NARCIS (Netherlands)

Van Der Putten, N.; Verbruggen, C.

Carbon dating of basal peat deposits in Cumberland Bay and Stromness Bay and sediments from a lake in Stromness Bay, South Georgia indicates deglaciation at the very beginning of the Holocene before c. 9500 14C yr BP. This post-dates the deglaciation of one local lake which has been ice-free since

Monitoring and evaluation of foods and waters in the planed emergency area of Daya Bay Nuclear Power Plant by γ spectrometry

International Nuclear Information System (INIS)

Su Qiong; Guo Jianying; Shao Xianzhang; Zhao Qiufen

1999-07-01

The detection results of foods and waters that are adopted in the planed emergency area of Daya Bay Nuclear Power Plant (NPP) in 1996 and measured by γ spectrometry are reported and compared with the level of background radioactivity before the operation of the NPP. With national standards concerned, the detection results have been reviewed. And it is shown that there has been negligible radioactive environmental pollution found around NPP in the passed several years. Possible sources of slight level pollution of 110m Ag that is almost only detected are discussed. Some suggestions on detection programme and studies of methodology henceforth are put forward

South Bay Salt Pond Mercury Studies Project

Science.gov (United States)

Information about the SFBWQP South Bay Salt Pond Mercury Studies Project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

The Daya Bay and T2K results on sin2⁡2θ13 and non-standard neutrino interactions

Directory of Open Access Journals (Sweden)

I. Girardi

2014-09-01

Full Text Available We show that the relatively large best fit value of sin2⁡2θ13=0.14(0.17 measured in the T2K experiment for fixed values of i the Dirac CP violation phase δ=0, and ii the atmospheric neutrino mixing parameters θ23=π/4, |Δm322|=2.4×10−3 eV2, can be reconciled with the Daya Bay result sin2⁡2θ13=0.090±0.009 if the effects of non-standard neutrino interactions (NSI in the relevant ν¯e→ν¯e and νμ→νe oscillation probabilities are taken into account.

The investment of radioactivity background in agroenvironment around Daya-Bay NPP

International Nuclear Information System (INIS)

Hou Lanxing; Xu Shiming; Zhao Wenhu; Shang Zhaorong; Li Xia

1996-03-01

The investigation of radioactivity and γ absorbed dose rate in free air were taken in soil organisms water around Daya-Bay NPP 50 km radius in 1985 and 1987. The result shows that the difference of total radioactivity in soil in same soil section between up and down is few, but the diversity among soil points is big. The order of natural radionuclides in top soil is 40 K> 232 Th> 238 U> 226 Ra. The diversity among soil point of 137 Cs is very big (0∼15.32 Bq) and the average value is 4.16 Bq. The total β activity in every kilogram water is 1.75∼1148.76 Bq and the order is sea water>pond water>river water>spring water. The total β activity in every kilogram fresh organisms is 5.2∼903.3 Bq and the order is rice straw>peanut kernel>peanut shell>rice hull>fish bone>leaf vegetables (green vegetable>romaine lettuce)>rice>meat (pork>chicken)>fish>milk>egg (duck's egg>layer's egg)>sugercane. The total α activity in every kilogram fresh organisms is 0.05∼283.6 Bq and the order is rice straw>peanut shell>fish bone>rice hull>peanut kernel>egg>leaf vegetables>rice>sugercane>meat>milk. The diversity of γ absorbed dose rate in free air between inside and out of house is 11.1∼17.8 Gy·h -1

The critical role of islands for waterbird breeding and foraging habitat in managed ponds of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California

Science.gov (United States)

Ackerman, Joshua T.; Hartman, C. Alex; Herzog, Mark P.; Smith, Lacy M.; Moskal, Stacy M.; De La Cruz, Susan E. W.; Yee, Julie L.; Takekawa, John Y.

2014-01-01

The South Bay Salt Pond Restoration Project aims to restore 50–90 percent of former salt evaporation ponds into tidal marsh in South San Francisco Bay, California. However, large numbers of waterbirds use these ponds annually as nesting and foraging habitat. Islands within ponds are particularly important habitat for nesting, foraging, and roosting waterbirds. To maintain current waterbird populations, the South Bay Salt Pond Restoration Project plans to create new islands within former salt ponds in South San Francisco Bay. In a series of studies, we investigated pond and individual island attributes that are most beneficial to nesting, foraging, and roosting waterbirds.

Detection of DDT and its metabolites in two estuaries of South China using a SPME-based device: First report of p,p'-DDMU in water column

International Nuclear Information System (INIS)

Xing Yuanna; Guo Ying; Xie Mei; Shen Rulang; Zeng, Eddy Y.

2009-01-01

A solid-phase microextration-based sampling method was employed to determine the concentrations of 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) and its metabolites, 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (DDD), 1,1-dichloro-2,2-bis(p-chlorophenyl)ethene (DDE) and 1-chloro-2,2-bis(p-chlorophenyl)ethene (DDMU), in two estuarine bays, Daya Bay and Hailing Bay, of South China. Six DDT components including p,p'-DDT, o,p'-DDD, p,p'-DDD, o,p'-DDE, p,p'-DDE, and p,p'-DDMU were detected in Hailing Bay, while only p,p'-DDD was found in Daya Bay. p,p'-DDD was the most abundant DDT component in both bays, sharply different from the previous finding in the water column of the Palos Verdes Shelf, California, USA that p,p'-DDE was prevalent. In addition, the occurrence of p,p'-DDMU (with a range of 0.047-0.21 ng/L in Hailing Bay) has not been reported around the globe, and its presence in our study region appeared to stem from dehydrochlorination of p,p'-DDD, favored under aerobic conditions, but further investigations are clearly needed to confirm the mechanism for generation of DDMU in estuarine environments. - DDT and its metabolites, particularly p,p'-DDMU, are detected in the water column of two estuarine bays in South China using a SPME-based sampler

Optimization of maintenance programme at Daya Bay Nuclear Power Station based on RCM analysis results

International Nuclear Information System (INIS)

Liu Min

2003-01-01

This paper begins with an introduction to Guangdong Daya Bay Nuclear Power Station (GNPS) and gives a simple introduction to the operations and maintenance documentation system at GNPS. It then will review the maintenance program guidelines base and the associated problems prior to the application of reliability centered maintenance (RCM). How RCM was implemented at GNPS, how the results of RCM analysis were used to optimize the maintenance program and test program, and what is the interface between RCM and the existing maintenance program will be shown. Next, it will show the successful implementation of RCM at GNPS resulted in the following changes: A new understanding of equipment failure challenges operations and maintenance beliefs, maintenance concepts undergo a large change, maintenance program and periodic testing program are continuously modified and optimized, new on-condition maintenance technologies are introduced, non-productive scheduled overhauls are discarded, maintenance costs are effectively controlled, maintenance appropriateness has improved, management of hidden failures is more effective and timely. It will show the benefit of greater equipment reliability brought about by all of these changes, which in turn increases the reliability and safety of the entire power station. (author)

Continuous resistivity profiling data from Great South Bay, Long Island, New York

Science.gov (United States)

Cross, V.A.; Bratton, J.F.; Kroeger, K.D.; Crusius, John; Worley, C.R.

2013-01-01

An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York was conducted to assess the importance of submarine groundwater discharge as a potential nonpoint source of nitrogen delivery to Great South Bay. Over 200 kilometers of continuous resistivity profiling data were collected to image the fresh-saline groundwater interface in sediments beneath the bay. In addition, groundwater sampling was performed at sites (1) along the north shore of Great South Bay, particularly in Patchogue Bay, that were representative of the developed Long Island shoreline, and (2) at sites on and adjacent to Fire Island, a 50-kilometer-long barrier island on the south side of Great South Bay. Other field activities included sediment coring, stationary electrical resistivity profiling, and surveys of in situ pore water conductivity. Results of continuous resistivity profiling surveys are described in this report. The onshore and offshore shallow hydrostratigraphy of the Great South Bay shorelines, particularly the presence and nature of submarine confining units, appears to exert primary control on the dimensions and chemistry of the submarine groundwater flow and discharge zones. Sediment coring has shown that the confining units commonly consist of drowned and buried peat layers likely deposited in salt marshes. Low-salinity groundwater extends from 10 to 100 meters offshore along much of the north and south shores of Great South Bay based on continuous resistivity profiling data, especially off the mouths of tidal creeks and beneath shallow flats to the north of Fire Island adjacent to modern salt marshes. Human modifications of much of the shoreline and nearshore areas along the north shore of the bay, including filling of salt marshes, construction of bulkheads and piers, and dredging of navigation channels, has substantially altered the natural hydrogeology of the bay's shorelines by truncating confining units and increasing

South Bay Salt Pond Restoration, Phase II at Ravenswood

Science.gov (United States)

Information about the South Bay Salt Pond Restoration Project: Phase II Construction at Ravenswood, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

Water quality in South San Francisco Bay, California: current condition and potential issues for the South Bay Salt Pond Restoration Project.

Science.gov (United States)

Grenier, J Letitia; Davis, Jay A

2010-01-01

The SBSPRP is an extensive tidal wetland restoration project that is underway at the margin of South San Francisco Bay, California. The Project, which aims to restore former salt ponds to tidal marsh and manage other ponds for water bird support, is taking place in the context of a highly urbanized watershed and an Estuary already impacted by chemical contaminants. There is an intimate relationship between water quality in the watershed, the Bay, and the transitional wetland areas where the Project is located. The Project seeks to restore habitat for endangered and endemic species and to provide recreational opportunities for people. Therefore, water quality and bioaccumulation of contaminants in fish and wildlife is an important concern for the success of the Project. Mercury, PCBs, and PBDEs are the persistent contaminants of greatest concern in the region. All of these contaminants are present at elevated concentrations both in the abiotic environment and in wildlife. Dioxins, pyrethroids, PAHs, and selenium are also problematic. Organochlorine insecticides have historically impacted the Bay, and they remain above thresholds for concern in a small proportion of samples. Emerging contaminants, such as PFCs and non-PBDE flame retardants, are also an important water quality issue. Beyond chemical pollutants, other concerns for water quality in South San Francisco Bay exist, and include biological constituents, especially invasive species, and chemical attributes, such as dissolved oxygen and salinity. Future changes, both from within the Project and from the Bay and watershed, are likely to influence water quality in the region. Project actions to restore wetlands could worsen, improve, or not affect the already impaired water quality in South Bay. Accelerated erosion of buried sediment as a consequence of Project restoration actions is a potentially serious regional threat to South Bay water and sediment quality. Furthermore, the planned restoration of salt ponds

MANFAAT SISTEM INFORMASI SUMBER DAYA MANUSIA DALAM MENGELOLA DEPARTEMEN SUMBER DAYA MANUSIA

Directory of Open Access Journals (Sweden)

H Teman Koesmono

2006-01-01

Full Text Available Adanya perkembangan teknologi informasi yang terjadi saat ini, memaksa semua pihak yang terlibat dalam proses produksi baik barang maupun jasa, untuk menghadapinya selain itu harus belajar lebih banyak tentang perangkat lunak maupun perangkat keras yang digunakan untuk mengelola informasi yang dibutuhkan oleh perusahaan. Khususnya tentang sistem informasi Sumber Daya Manusia, tidak kalah pentingnya dengan sistem informai yang lainnya misalnya Information Marketing System, Production Information System dan Financial Information System. Untuk itulah pengelolaan SISDM harus dilaksanakan secara profesional artinya dilaksanakan secara totalitas sehingga informai yang didapatkan cukup akurat, relevan, aktual dan cepat didapat apabila dibutuhkan oleh pihak-pihak yang berkepentingan. Berbagai aspek informasi sumber daya manusia mulai dari perencanaan sampai pemisahan tenaga kerja membutuhkan pengelolaan yang tepat. Keberadaan Sistem Informasi Sumber Daya Manusia di dalam perusahaan, sangat berperan mendukung kegiatan operasional Departemen Sumber Daya Manusia yang lebih efektif dan efisien.

South Bay Salt Pond Tidal Wetland Restoration Phase II Planning

Science.gov (United States)

Information about the SFBWQP South Bay Salt Pond Tidal Wetland Restoration Phase II Planning project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic re

SEJARAH PENGUASAAN SUMBER DAYA PESISIR DAN LAUT DI TELUK TOMINI

Directory of Open Access Journals (Sweden)

Muhammad Obie

2015-01-01

Full Text Available This article aims to analyze the historical milestones of coastal and sea resources management in Tomini Bay. It used a critical theory paradigm with two strategies, namely historical sociology and case studies. The collected data were primary and secondary ones, then were analyzed by using qualitative approach. The analysis results indicated that coastal and sea management in To-mini Bay could be divided into era before 1901, when Bajo Tribe was the sea adventurer in To-mini Bay as well as owning the resources. Since 1901 to independence era of Old Order, Bajo tribe began to settle to coastal area, built houses above the sea surfaces with economic resources coming from fishing and other sea pickings.  During the New Order, precisely from 1977 to Reformation Order, the existence of Bajo Tribe was terribly disturbed by the wood company, fishpond, and conservation policy. In this era, Bajo Tribe faced the resettlement pressure that caused their community was divided, Sea Bajo and Land Bajo.  This reality caused the access of the Land Bajo community to the coastal and sea resources was limited, while the Sea Bajo community was progressively under the pressure of of the expansion of the wood company, fishpond, and conservation policy.Key words: Bajo Tribe, wood company, fishpond, conservation, resettlement, cultural tourismTujuan penelitian ini adalah menganalisis tonggak-tonggak sejarah penguasaan sumber daya pesisir dan laut di Teluk Tomini. Penelitian ini menggunakan paradigma teori kritis, dengan strategi sosiologi sejarah dan studi kasus. Data yang terkumpul berupa data primer dan data sekunder, kemudian dianalisis dengan pendekatan kualitatif. Hasil penelitian menunjukkan bahwa penguasaan sumber daya pesisir dan laut di Teluk Tomini dapat dibagi atas masa sebelum tahun 1901, yang ditandai Suku Bajo sebagai pengembara laut di Teluk Tomini sekaligus me-nguasai sumber daya yang ada. Sejak tahun 1901 sampai masa kemerdekaan (Orde Lama, Suku Bajo

The distribution and speciation of trace metals in surface sediments from the Pearl River Estuary and the Daya Bay, Southern China

International Nuclear Information System (INIS)

Yu Xiujuan; Yan Yan; Wang Wenxiong

2010-01-01

Surface sediments collected from the Pearl River Estuary (PRE) and the Daya Bay (DYB) were analyzed for total metal concentrations and chemical phase partitioning. The total concentrations of Cr, Cu, Ni, Pb, and Zn in the PRE were obviously higher than those in DYB. The maximum concentrations of trace metals in DYB occurred in the four sub-basins, especially in Dapeng Cove, while the concentrations of these metals in the western side of the PRE were higher than those in the east side. Such distribution pattern was primarily due to the different hydraulic conditions and inputs of anthropogenic trace metals. The chemical partitioning of metals analyzed by the BCR sequential extraction method showed that Cr, Ni, and Zn of both areas were present dominantly in the residual fraction, while Pb was found mostly in the non-residual fractions. The partitioning of Cu showed a significant difference between the two areas.

Recolonisation of the Robberg Peninsula (Plettenberg Bay, South ...

African Journals Online (AJOL)

The Cape fur seal Arctocephalus pusillus pusillus colony at Robberg Peninsula, Plettenberg Bay, on the south-east coast of South Africa, was driven to extinction by indiscriminate harvesting by the late 1800s. Seals only began to recolonise this site in the 1990s. This study describes the recolonisation process from 2000 to ...

Analisis Rugi Daya Pada Penyulang Bangli Dengan Beroperasinya PLTS Kayubihi

Directory of Open Access Journals (Sweden)

I GN Dion Adiputra

2015-06-01

Full Text Available Analisis rugi daya pada Penyulang Bangli dilakukan untuk mengetahui perbanding an rugi daya pada jaringan distribusi setelah penempatan pembangkit tersebar jenis PLTS berkapasitas 1 MWp. Lokasi penempatan PLTS ditentukan berdasarkan analisis sensitivitas bus. Nilai sensitivitas bus(?didapat dengan cara membandingkan nilai rugi daya pada sistem dengan total beban yang terhubung pada bus. Penelitian ini menggunakan simulasi aliran daya dengan metode aliran daya Newton-Raphson. Hasil penelitian menunjukkan bus TK 0041 memiliki sensitivitas terbesar dengan nilai ?= 0,178. Dari hasil simulasi aliran daya, penempatan PLTS 1MWp pada lokasi alternatif 1 menghasilkan rugi daya minimum pada Penyulang Bangli yaitu 103,1 kW atau 3,3% dari total suplai daya 3071 kW. Pemasangan PLTS dapat menurunkan rugi daya pada Penyulang Bangli sebesar 57 kW dari total rugi daya pada kondisi tanpa PLTS yaitu 160,1 kW. Bila dibandingkan dengan kondisi eksisting, penem patan PLTS pada lokasi alternatif 1 memiliki selisih rugi daya 7,3 kW lebih kecil dari total rugi daya yang dihasilkan kondisi eksisting sebesar 110,4kW.

Study on 137Cs adsorption by soils around Qingshan and Daya Bay Nuclear Power Plants

International Nuclear Information System (INIS)

Lu Zixian; Xu Shiming

1992-10-01

The patterns of 137 Cs adsorption and percolation are studied by 137 Cs solution through soil cylinder samples collected from seven sites around Qingshan and Daya Bay Nuclear Power Plant. The top soils (0 ∼ 20 cm) are put into plastic tubes after being sieved. Three different ways are taken in the experiments. (1) 137 Cs solutions with the same specific activity (3.7 x 10 4 Bq/L) and same volume (40 mL) pass through the soils. (2) 137 Cs solutions with different specific activity (3.7 x 10 3 , 3.7 x 10 4 , and 3.7 x 10 5 Bq/L) and with same volume (40 mL) pass through the soils. (3) 137 Cs solutions with same specific activity (3.7 x 10 4 Bq/L) and with different volumes (40, 80, 120 mL) pass through the soils. The results show that the relationships of specific activity on the top 1 cm soil to the specific activity of solution is conformed to y = Ax B , to the volume of solution is conformed to y = A + Bx. The upper 0 to 1 cm soil adsorbs 137 Cs over 90-95%, and upper 0-5 cm soil adsorbs 100% 137 Cs. When the depth is greater than 5 cm the activity of filtered solution is background. From this experiment, it shows that the contamination can be eliminated by removing top soil when the soil is contaminated by 13 '7Cs solution

Practice and experience of radiation protection and optimization (ALARA) management system in Daya Bay NPP during the past 10 years

International Nuclear Information System (INIS)

Chen Degan; He Yu; Yang Maochun; Gu Jingzhi

2004-01-01

With the practice of 10 years safe operation, Daya Bay Nuclear Power Station has established and continuously improved the management system for radiation protection and optimization (ALARA) which contains 3 basic requirements: all workers are trained, all employees are engaged in totally, and work management is implemented for the whole process. At the same time, strong efforts have been made to build the 'infrastructure' as a platform for its effective operation. This article introduces the contents and characteristics of the system and basic experiences of its effective implementation. In order to implement the management system effectively, it is necessary for NPPs to strengthen the responsibility system for radiation protection and the leading role of the radiation protection personnel, especially the role of technical support and supervision during the work with high radiation risk, emphasize the organic combination and actively mutual action with the safe operation management system of the plant, and pay great attention to the formation of safety culture and the experience feedback to ensure the continuous improvement of the management system

PENILAIAN KONDISI TRANSFORMATOR DAYA PADA PT.X

Directory of Open Access Journals (Sweden)

Badaruddin Badaruddin

2016-10-01

Full Text Available Transformator daya merupakan peralatan yang vital dalam penyaluran energi listrik dari unit pembangkit menuju sistem jaringan saluran tegangan. Kehandalan transformator daya sangat penting untuk keberhasilan operasi dari sistem tenaga listrik. Untuk itu dilakukan pendekatan sistematis dengan cara mengetahui kondisi peralatan komponen utama dari transformator daya tersebut. Transformator secara ideal memiliki useful life sesuai dengan design life yang direkomendasikan yaitu 30 tahun. Sedangkan transformator daya PT X sudah tidak berada dalam range useful life, dimana transformator daya tersebut diproduksi oleh Takaoka Electric pada tahun 1976. Oleh karena factor usia transformator yang sudah berumur maka diperlukan inspeksi khusus secara mendalamsebagai pendukung untuk membuat keputusan pembatasan operasi atau keputusan investasi pembangkit secara tepat dan tidak merugikan unit pembangkit itu sendiri. Untuk itu penulis melakukan serangkaian pengujian dan analisa penilaian kondisi transformator daya PT X untuk memperoleh nilai kondisi dengan mengacu  pada referensi penilaian HAP (Hydro Power Advancement Project. Hasil penilaian kondisi diharapkan nantinya akan digunakan sebagai bahan pendukung tindak lanjut pengambilan keputusan oleh PT. X.

Shallow-water, nearshore current dynamics in Algoa Bay, South ...

African Journals Online (AJOL)

Nearshore currents play a vital role in the transport of eggs and larval stages of fish. However, little is known about their complexity and the implications for dispersal of fish larvae. The study describes the complexity of the shallow nearshore environment in eastern Algoa Bay, on the south-east coast of South Africa, and its ...

33 CFR 162.65 - All waterways tributary to the Atlantic Ocean south of Chesapeake Bay and all waterways tributary...

Science.gov (United States)

2010-07-01

... Atlantic Ocean south of Chesapeake Bay and all waterways tributary to the Gulf of Mexico east and south of... All waterways tributary to the Atlantic Ocean south of Chesapeake Bay and all waterways tributary to..., which are tributary to or connected by other waterways with the Atlantic Ocean south of Chesapeake Bay...

76 FR 31851 - Safety Zone; Put-in-Bay Fireworks, Fox's the Dock Pier; South Bass Island, Put-in-Bay, OH

Science.gov (United States)

2011-06-02

... DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 165 [Docket No. USCG-2011-0417] RIN 1625-AA00 Safety Zone; Put-in-Bay Fireworks, Fox's the Dock Pier; South Bass Island, Put-in-Bay, OH AGENCY.... Add Sec. 165.T09-0417 as follows: Sec. 165.T09-0417 Safety Zone; Put-In-Bay Fireworks, Fox's the Dock...

Ecosystem history of South Florida; Biscayne Bay sediment core descriptions

Science.gov (United States)

Ishman, S.E.

1997-01-01

The 'Ecosystem History of Biscayne Bay and the southeast Coast' project of the U.S. Geological Survey is part of a multi-disciplinary effort that includes Florida Bay and the Everglades to provide paleoecologic reconstructions for the south Florida region. Reconstructions of past salinity, nutrients, substrate, and water quality are needed to determine ecosystem variability due to both natural and human-induced causes. Our understanding of the relations between the south Florida ecosystem and introduced forces will allow managers to make informed decisions regarding the south Florida ecosystem restoration and monitoring. The record of past ecosystem conditions can be found in shallow sediment cores. This U.S. Geological Survey Open-File Report describes six shallow sediment cores collected from Biscayne Bay. The cores described herein are being processed for a variety of analytical procedures, and this provides the descriptive framework for future analyses of the included cores. This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

South Bay Salt Pond Tidal Marsh Restoration at Pond A17 Project

Science.gov (United States)

Information about the SFBWQP South Bay Salt Pond Tidal Marsh Restoration at Pond A17 Project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

Daya Bay Nuclear Power Station operation and management indicators system

International Nuclear Information System (INIS)

Fang Chunfa

2000-01-01

Ever since the commercial operation of Daya Bay Nuclear Power Station (GNPS), dynamic objective management concept that features modern enterprises has been adopted by the station to manage all operational activities with the guidance of business plan. And some quantitative indicators have been employed in order to measure effectively the progress status of these operational activities. After several years' evolvement, a hierarchical and standard performance indicators system has been developed and is playing an active part in the plant's efforts towards top quartile of world nuclear power industry. Structured hierarchically with higher levels resolving into lower levels and lower levels committing to higher levels, the indicator system represents the corporate vision, WANO (World Association of Nuclear Operators) performance indicators, plant integrated indicators and departmental key indicators, covering such areas as safety, production, environment, human resource and cost control. The indicator system not only reflects performance-centered management concept, but also shows the controllability of the whole operational process of the station. Indicators of a certain level serve as both early warnings to superior indicators (lagging indicators in this case) and effects to inferior indicators (leading indicators in this case). The dynamic status of these indicators, numbered more than 230, will eventually be fed back to the business plan and realized through daily work of every branch, and even every member of the workforce. With the indicator system as a quantitative management tool, and an effective tracking system, GNPS has achieved great success in self-assessment, objective definition, improvement follow up, resource re-allocation, and management-staff communication. Periodic plant performance assessment is performed through spider chart and other pictorial diagrams. Indicators are displayed at the plant entrance, offices, Main Control Room and SIS network

PENGUKURAN TINGKAT DAYA SAING DAERAH BERDASARKAN VARIABEL PEREKONOMIAN DAERAH, VARIABEL INFRASTRUKTUR DAN SUMBER DAYA ALAM, SERTA VARIABEL SUMBER DAYA MANUSIA DI WILAYAH PROVINSI SULAWESI TENGGARA

Directory of Open Access Journals (Sweden)

Ira Irawati

2012-10-01

Full Text Available Daya saing wilayah menunjukkan kemampuan suatu wilayah menciptakan nilai tambah untuk mencapai kesejahteraan yang tinggi dan berkelanjutan dengan tetap terbuka pada persaingan domestik dan  internasional. Pengembangan wilayah di kota-kota dan kabupaten-kabupaten di Provinsi Sulawesi  Tenggara merupakan upaya untuk meningkatkan daya saing tersebut, walaupun  dalam pengembangannya  menghadapi permasalahan-permasalahan yang antara lain disebabkan oleh kurang berkembangnya sumber  daya manusia yang diakibatkan oleh rendahnya tingkat pendidikan dan rendahnya kualitas hidup  masyarakat serta kurangnya prasarana dan sarana untuk menunjang kesejahteraan masyarakat.  Perbandingan relatif tingkat daya saing antar kota kabupaten tersebut; berdasarkan 3 (tiga variabel yaitu  tingkat  perekonomian daerah,  ketersediaan  infrastruktur  dan  sumber  daya  alam,  serta  ketersediaan  dan kualitas sumber daya manusia; dilakukan untuk melihat sejauh mana daerah-daerah tersebut memiliki  keunggulan  untuk  mengatasi  persamalahan-permasalahan  dalam pengembangan wilayahnya. Kata kunci: Pengembangan Wilayah, Daya Saing. Abstract The competitiveness of the region demonstrated the ability of an area to create added value to achieve a high and sustainable prosperity to remain open to domestic and international competition. Development areas in the cities and districts in Southeast Sulawesi is an effort to enhance the competitiveness, even in the face of development issues among others caused by the lack of development of human resources caused by low levels of education and poor quality of life and the lack of infrastructure and facilities to support the welfare of the community. Comparison of the relative level of competitiveness between the city districts; based on 3 (three variables, namely the level of the regional economy, the availability of infrastructure and natural resources, as well as the availability and quality of human resources

76 FR 70480 - Otay River Estuary Restoration Project, South San Diego Bay Unit of the San Diego Bay National...

Science.gov (United States)

2011-11-14

... River Estuary Restoration Project, South San Diego Bay Unit of the San Diego Bay National Wildlife...), intend to prepare an environmental impact statement (EIS) for the proposed Otay River Estuary Restoration... any one of the following methods. Email: [email protected] . Please include ``Otay Estuary NOI'' in the...

PENGARUH E-LEARNING UNTUK MENINGKATKAN DAYA MATEMATIK MAHASISWA

Directory of Open Access Journals (Sweden)

R. Poppy Yaniawati

2013-01-01

Full Text Available Abstrak: Pengaruh E-learning untuk Meningkatkan Daya Matematik Abstrak: Pengaruh E-learning untuk Meningkatkan Daya Matematik Mahasiswa. Peran integrasi teknologi pada pembelajaran modern cukup penting guna terjadinya proses percepatan dalam peningkatan daya matematika (mathematical power secara optimal. Penelitian ini mengungkapkan pengaruh e-learning untuk meningkatkan daya matematika. Subjek penelitian ini adalah mahasiswa semester IV pada dua level LPTK yang berbeda. Teknik pengumpulan data dengan tes dan teknik analisis data dengan statistik anova dua jalur. Berdasarkan hasil analisis data, diperoleh bahwa daya matematika mahasiswa yang pembelajarannya melalui blended learning lebih baik dibandingkan melalui full e-learning dan konvensional. Tetapi, daya matematika mahasiswa yang pembelajarannya melalui full e-learning kurang baik dibandingkan melalui pembelajaran konvensional. Dengan demikian, peran guru dalam pembelajaran matematika tidak dapat tergantikan oleh teknologi informasi. Terdapat korelasi yang signifikan antara daya matematik dengan pengetahuan awal, tetapi tidak terdapat korelasi yang signifikan antara daya matematik dan durasi login. Kata Kunci: e-learning, daya matematik, blended learning Abstract: Influence of E-learning to Improve Students’ Mathematical Power. The role of technology on modern learning is essential to the acceleration process in the improvement of mathematical power. This research describes the influence of elearning to improve mathematical power. The subject is the fourth semester students at two Universities. The results show that students who learned through blended learning method are much better in mathematical power than students who learned through full e-learning or conventional approaches. Furthermore, students who learned through e-learning are worse than students used conventional method. Therefore, this indicates that the role of teachers in the mathematics learning process can not be replaced

Pengaruh Kapasitas Kondensator Terhadap Daya Mesin Toyota 5K

Directory of Open Access Journals (Sweden)

M. Alfian Mizar

2009-02-01

Full Text Available Penelitian ini bertujuan untuk mengetahui perbedaan daya motor dan daya maksimumnya pada mesin Toyota 5K untuk pemakaian kondensator berkapasitas 0,15 mf, 0,22 mf, dan 0,25 mf. Desain yang digunakan adalah eksperimen satu jalur (one-way design dengan 3 kelompok eksperimen. Pengumpulan datanya dilakukan dengan observasi, sedangkan instrumen pengukurannya menggunakan "Prony Brake" dengan cara mengukur putaran mesin dan momen torsi yang terjadi. Hasil analisis varian menunjukkan adanya perbedaan yang dignifikan, sedangkan Scheffe test memberikan hasil: (1 ada perbedaan daya motor antara pemasangan kondensator berkapasitas 0,15 mf dengan 0,22 mf, (2 ada perbedaan daya motor antara pemasangan kondensator berkapasitas 0,15 mf dengan 0,25 mf, (3 tidak ada perbedaan daya motor antara pemasangan kondensator berkapasitas 0,22 mf dengan 0,25 mf. Daya maksimum yang dihasilkan pada pemasangan kondensator yang berkapasitas 0,15 mf, 0,22 mf, dan 0,25 mf nasing-masing adalah 59,46153+1,46177 PK, 60,32692+1,35744 PK, dan 60,78461+1,68140 PK. Jenis kondensator yang dapat menghasilkan daya paling maksimum adalah kondensator berkapasitas 0,25 mf.

A comparison of the radioactivity levels in the coastal waters between the great wall and Zhongshan stations in Antarctica and the Pohai, Huanghai, east China and south China seas of China

International Nuclear Information System (INIS)

Chen Jinxing

1992-01-01

A comparison of radioactivity levels in the coastal sediments and plants between the Great Wall and Zhongshan Stations in Antarctica and the four seas (i.e. the Pohai Sea, Huanghai Sea, East China Sea and South China Sea) in China shows that in general the radioactivity levels in the coastal sediments and plants in Antarctica are lower than those in the four seas in China. The contents of the total β in the sediments decrease from higher to lower in amount in the order of East China Sea, South China Sea, Pohai Sea, Huanghai Sea and the Great Wall Bay in Antarctica successively, but the contents of 238 U, 232 Th, 226 Ra, 40 K and the total β in marine plants decrease from higher to lower in amount in the order of Daya Bay in the South China Sea, Hanzhou Bay in the East China Sea and the Great Wall Bay in Antarctica successively. The results show that the contamination levels of radioactivity, especially the artificial radioactive contamination in the Antarctic coastal area are far lower than those in China Coastal area, with the remarkable exception of 137 Cs

Implications of the Daya Bay observation of θ13 on the leptonic flavor mixing structure and CP violation

International Nuclear Information System (INIS)

Xing Zhizhong

2012-01-01

The Daya Bay collaboration has recently reported its first ν-bar e → ν-bar e oscillation result which points to θ 13 ≅ 8.8° ±0.8° (best-fit ±1φ range) or θ 13 ≠0° at the 5.2a level. The fact that this smallest neutrino mixing angle is not strongly suppressed motivates us to look into the underlying structure of lepton flavor mixing and CP violation. Two phenomenological strategies are outlined: (1) the lepton flavor mixing matrix U consists of a constant leading term U 0 and a small perturbation term ΔU; and (2) the mixing angles of U are associated with the lepton mass ratios. Some typical patterns of U 0 are reexamined by constraining their respective perturbations with current experimental data. We illustrate a few possible ways to minimally correct U 0 in order to fit the observed values of three mixing angles. We point out that the structure of U may exhibit an approximate μ-τ permutation symmetry in modulus, and reiterate the geometrical description of CP violation in terms of the leptonic unitarity triangles. The salient features of nine distinct parametrizations of U are summarized, and its Wolfenstein-like expansion is presented by taking U 0 to be the democratic mixing pattern. (author)

Review of suspended sediment in lower South Bay relevant to light attenuation and phytoplankton blooms

Science.gov (United States)

Schoellhamer, David H.; Shellenbarger, Gregory; Downing-Kunz, Maureen; Manning, Andrew J.

2016-01-01

Lower South Bay (LSB), a shallow subembayment of San Francisco Bay (SFB), is situated south of the Dumbarton Bridge, and is surrounded by, and interconnected with, a network of sloughs, marshes, and former salt ponds undergoing restoration (Figure ES.1). LSB receives 120 million gallons per day of treated wastewater effluent from three publicly owned treatment works (POTWs) that service San Jose and the densely populated surrounding region. During the dry season, when flows from creeks and streams are at their minimum, POTW effluent comprises the majority of freshwater flow to Lower South Bay. Although LSB has a large tidal prism, it experiences limited net exchange with the surrounding Bay, because much of the water that leaves on ebb tides returns during the subsequent flood tides. The limited exchange leads to distinctly different biogeochemical conditions in LSB compared to other SFB subembayments, including LSB having the highest nutrient concentrations and highest phytoplankton biomass.

Pengaruh Tingkat Kepadatan Tanah terhadap Daya Dukung Tanah

OpenAIRE

Martini, Martini

2009-01-01

Untuk mendapatkan lahan yang datar pada daerah perbukitan adalah dengan melakukan “cut and fill”, sehingga kemungkinan bangunan dilatakan pada daerah “cut and fill”. Perbedaan kepadatan tanah asli dengan tanah timbunan akan berpengaruh pada daya dukung tanahnya. Hasil penelitian ini menunjukan, kepadatan tanah timbunan lebih rendah 13% - 39% dari kepadatan tanah ditempat, daya dukung tanah timbunan lebih rendah hingga 50% dari daya dukung tanah asli. Tetapi bila kepadatan tanah timbunan lebih...

33 CFR 334.640 - Gulf of Mexico south of Apalachee Bay, Fla.; Air Force rocket firing range.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Gulf of Mexico south of Apalachee Bay, Fla.; Air Force rocket firing range. 334.640 Section 334.640 Navigation and Navigable Waters... REGULATIONS § 334.640 Gulf of Mexico south of Apalachee Bay, Fla.; Air Force rocket firing range. (a) The...

Isolation and characterization of a novel hydrocarbon-degrading bacterium Achromobacter sp. HZ01 from the crude oil-contaminated seawater at the Daya Bay, southern China

International Nuclear Information System (INIS)

Deng, Mao-Cheng; Li, Jing; Liang, Fu-Rui; Yi, Meisheng; Xu, Xiao-Ming; Yuan, Jian-Ping; Peng, Juan; Wu, Chou-Fei; Wang, Jiang-Hai

2014-01-01

Graphical abstract: Morphological properties of the colonies and cells of strain HZ01. (A) Colonies of strain HZ01 on the LB solid plate; (B) Gram-negative bacterium of strain HZ01 (20 × 100); (C) Scanning electron microscopy (SEM) photograph of strain HZ01 (×15,000); and (D) Transmission electronic microscopy (TEM) photograph of strain HZ01 (×5000). - Highlights: • A novel petroleum degrading bacterium HZ01 was obtained from the crude oil-contaminated seawater. • Strain HZ01 had been identified as Achromobacter sp. • Strain HZ01 could degrade the evaporated diesel oil with the degradability of 96.6%. • Strain HZ01 could effectively degrade anthracene, phenanthrene and pyrence. • Strain HZ01 may be employed to remove hydrocarbon contaminants. - Abstract: Microorganisms play an important role in the biodegradation of petroleum contaminants, which have attracted great concern due to their persistent toxicity and difficult biodegradation. In this paper, a novel hydrocarbon-degrading bacterium HZ01 was isolated from the crude oil-contaminated seawater at the Daya Bay, South China Sea, and identified as Achromobacter sp. Under the conditions of pH 7.0, NaCl 3% (w/v), temperature 28 °C and rotary speed 150 rpm, its degradability of the total n-alkanes reached up to 96.6% after 10 days of incubation for the evaporated diesel oil. Furthermore, Achromobacter sp. HZ01 could effectively utilize polycyclic aromatic hydrocarbons (PAHs) as its sole carbon source, and could remove anthracene, phenanthrene and pyrence about 29.8%, 50.6% and 38.4% respectively after 30 days of incubation. Therefore, Achromobacter sp. HZ01 may employed as an excellent degrader to develop one cost-effective and eco-friendly method for the bioremediation of marine environments polluted by crude oil

Comparison of mercury bioaccumulation between wild and mariculture food chains from a subtropical bay of Southern China.

Science.gov (United States)

Qiu, Yao-Wen; Wang, Wen-Xiong

2016-02-01

Bioaccumulation and trophic transfer of mercury (Hg) both in the natural marine ecosystem and the mariculture ecosystem were studied at Daya Bay, a subtropical bay in Southern China. Averaged Hg concentrations in sediment, phytoplankton, macrophyte, shrimp, crab, shellfish, planktivorous fish, carnivorous fish, farmed pompano, farmed snapper, compound feed and trash fish were 0.074, 0.054, 0.044, 0.098, 0.116, 0.171, 0.088, 0.121, 0.210, 0.125, 0.038 and 0.106 μg g(-1) dw, respectively. These Hg levels were at the low-middle ends of the global range. Positive correlation between Hg concentrations in farmed fish and fish weights/sizes was observed, whereas no clear correlation between Hg concentrations and lipid contents was found. Hg concentrations followed macrophyte trash fish marine food chain in the ecosystem of Daya Bay. Hg levels in the farmed fish were higher than those in the wild fish primarily because of the higher Hg level in fish feed and the smaller size of marine wild fish.

ANALISIS DAYA SAING KEDELAI INDONESIA

Directory of Open Access Journals (Sweden)

Sarwono Sarwono

2014-09-01

Full Text Available RCA (Revealed Comparative Advantage index of soybean in Indonesia from 1983 up to 2013 is less than one, mostly. It means that the competitiveness of soybean in Indonesia is low. The purpose of this study is to analyze the factors influence the soybean competitiveness. OLS (Ordinary Least Square was used as the analysis method. Hypotheses test based on that analysis model is not bias, so that, classic divergence test is needed. It is for getting the Best Linier Unbiased Estimator (BLUE appraisal. T statistic and F statistic were also applied. The result of this research shows that production and export have positive and significant influence. In addition, exchange rate and government policy do not influence the Indonesia soybean competitiveness.Indeks RCA (Revealed Comparative Advantage kedelai Indonesia dari tahun 1983-2013 kecenderungan bernilai kurang dari satu yang berarti daya saing kedelai Indonesia rendah.Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi daya saing kedelai Indonesia.Metode analisis yang digunakan adalah Ordinary Least Square (OLS.Pengujian hipotesis berdasarkan model analisis tersebut tidak bias maka perlu dilakukan uji penyimpangan klasik yang tujuannya agar diperoleh penaksiran yang bersifat Best Linier Unbiased Estimator (BLUE.Pengujian statistik menggunakan uji t statistikdan uji f statistik.Hasil penelitian ini menunjukkan bahwa produksi dan ekspor berpengaruh secara positif dan signifikan terhadap daya saing kedelai Indonesia. Nilai tukar rupiah dan kebijakan pemerintah tidak berpengaruh terhadap daya saing kedelai Indonesia.

Daya Manghani

Indian Academy of Sciences (India)

Home; Journals; Resonance – Journal of Science Education. Daya Manghani. Articles written in Resonance – Journal of Science Education. Volume 7 Issue 4 April 2002 pp 20-26 Series Article. Glial Cells: The Other Cells of the Nervous System - Astrocytes – Star Performers in the Neural Tissue · Medha S Rajadhyaksha ...

Coastal upwelling by wind-driven forcing in Jervis Bay, New South Wales: A numerical study for 2011

Science.gov (United States)

Sun, Youn-Jong; Jalón-Rojas, Isabel; Wang, Xiao Hua; Jiang, Donghui

2018-06-01

The Princeton Ocean Model (POM) was used to investigate an upwelling event in Jervis Bay, New South Wales (SE Australia), with varying wind directions and strengths. The POM was adopted with a downscaling approach for the regional ocean model one-way nested to a global ocean model. The upwelling event was detected from the observed wind data and satellite sea surface temperature images. The validated model reproduced the upwelling event showing the input of bottom cold water driven by wind to the bay, its subsequent deflection to the south, and its outcropping to the surface along the west and south coasts. Nevertheless, the behavior of the bottom water that intruded into the bay varied with different wind directions and strengths. Upwelling-favorable wind directions for flushing efficiency within the bay were ranked in the following order: N (0°; northerly) > NNE (30°; northeasterly) > NW (315°; northwesterly) > NE (45°; northeasterly) > ENE (60°; northeasterly). Increasing wind strengths also enhance cold water penetration and water exchange. It was determined that wind-driven downwelling within the bay, which occurred with NNE, NE and ENE winds, played a key role in blocking the intrusion of the cold water upwelled through the bay entrance. A northerly wind stress higher than 0.3 N m-2 was required for the cold water to reach the northern innermost bay.

Vapor Intrusion Facility Points, South Bay CA, 2014, US EPA Region 9

Data.gov (United States)

U.S. Environmental Protection Agency — POINT locations for the South Bay Vapor Instrusion Sites were derived from the NPL data for Region 9. One site, Philips Semiconductor, was extracted from the...

Trace metal associations in the water column of South San Francisco Bay, California

Science.gov (United States)

Kuwabara, J.S.; Chang, Cecily C.Y.; Cloern, J.E.; Fries, T.L.; Davis, J.A.; Luoma, S.N.

1989-01-01

Spatial distributions of copper (Cu), zinc (Zn) and cadmium (Cd) were followed along a longitudinal gradient of dissolved organic carbon (DOC) in South San Francisco Bay (herein referred to as the South Bay). Dissolved Cu, Zn and Cd concentrations ranged from 24 to 66 nM, from 20 to 107 nM and from 1??2 to 4??7 nM, respectively, in samples collected on five dates beginning with the spring phytoplankton bloom and continuing through summer,1985. Dissolved Cu and Zn concentrations varied indirectly with salinity and directly with DOC concentration which ranged from 2??1 to 4??1 mg l-1. Available thermodynamic data strongly support the hypothesis that Cu speciation may be dominated by association with dissolved organic matter. Analogous control of Zn speciation by organic complexation was, however, not indicated in our computations. Computed free ion activity estimates for Cu, Zn and Cd were of the order of 10-10, 10-8 and 10-10 M, respectively. The availability of these metals may be among the factors regulating the growth of certain phytoplankton species within this region of the estuary. In contrast to dissolved Cu, dissolved Cd was directly related to the concentration of suspended particulate matter, suggesting a source of dissolved Cd coincident with elevated particle concentrations in the South Bay (e.g. runoff and solute desorption). Consistent with work in other estuaries, partitioning of all three trace metals onto suspended particulates was negatively correlated with salinity and positively correlated with increases in particulate organic carbon associated with the phytoplankton bloom. These results for the South Bay indicate that sorption processes influence dissolved concentrations of these trace metals, the degree of this influence varies among metals, and processes controlling metal distribution in this estuary appear to be more element-specific than spatially- or temporally-specific. ?? 1989.

SUMBER DAYA WIRELESS UNTUK MENGHASILKAN ENERGI LISTRIK TERBARUKAN

Directory of Open Access Journals (Sweden)

Rahmad Hidayat

2016-06-01

Full Text Available Industri daya dan energi tidak terlepas dari peran penting gelombang elektromagnetik. Tulisan ini memberikan kajian metode pembangkitan daya listrik melalui sistem transmisi wireless. Perhatian utamanya ada pada empat metode karena kepraktisannya yaitu induksi elektromagnetik,  kopling resonansi, laser dan penerimaan sinyal  frekuensi radio. Metode yang ada dibandingkan satu sama lain dalam beberapa aspek teknis. Tujuan penelitian ini adalah untuk memilah beberapa desain sesuai metoda pembangkitan daya listriknya masing-masing, dan hasil penelitian ini berupa usulan metode yang paling menjanjikan untuk memanen energi listrik secara wireless dengan tingkat efisiensi yang baik yaitu dengan menggunakan rectenna sebagai bagian utama suatu sistem Wireless Power Transmission (WPT.

PRAKTIK-PRAKTIK PENGELOLAAN SUMBER DAYA MANUSIA DAN KEUNGGULAN KOMPETITIF BERKELANJUTAN

Directory of Open Access Journals (Sweden)

Lena Ellitan

2002-01-01

Full Text Available Fundamental changes in the business environment have created a sudden shift of importance of human resource management and human resource functions. The human resource department is being presented with an opportunity to become a significant player on the management team. This is occurring because the human resource function is being transformed into a significant management function. According to researchers and theorists arguments, human assets can be a source of sustained competitive advantage because human assets have tacit knowledge and social complexity that are hard for competitors to imitate. Management practices that are predicted to be sources of sustainable competitive advantage are employment security, selectivity in recruiting, high wages, incentive pay, employee ownership, information sharing, participation and empowerment, self-management teams, training and skill development, cross utilization and cross training, symbolic egalitarianism, wage compression, and promotion from within. Abstract in Bahasa Indonesia : Perubahan-perubahan yang mendasar dalam lingkungan bisnis telah menyebabkan pergeseran dalam urutan pentingnya manajemen sumber daya manusia dan fungsi sumber daya manusia. Departemen sumber daya manusia diberi kesempatan mengambil peran penting dalam tim manajemen. Hal ini terjadi karena fungsi sumber daya manusia sedang berubah menjadi fungsi manajemen yang penting. Menurut pendapat para peneliti dan teoretisi, aset sumber daya manusia dapat menjadi sumber keunggulan kompetitif yang berkelajutan karena aset-aset manusia tersebut mempunyai pengetahuan dan kompleksitas sosial yang sulit ditiru oleh para pesaing. Praktik-praktik manajemen sumber daya manusia yang diperkirakan dapat menjadi sumber keunggulan kompetitif yang berkelajutan adalah kepastian kerja, selektivitas dalam rekrutmen, upah tinggi, upah insentif, kepemilikan karyawan, pembagian informasi, keterlibatan dan pemberdayaan, tim-tim yang diatur sendiri

Account of the littoral diatoms from Langebaan, Saldanha bay, Cape province, South Africa

CSIR Research Space (South Africa)

Giffen, MH

1975-01-01

Full Text Available collec ted in a small bay near the holiday resort of Langebaan (long. 18,02 E, lat. 33,05 5) on the eastern shore of Saldanha Bay. Saldanha Bay is situated on the western coast of South Africa some 110 km north of Cape Town, and forms a long narrow... per annum about 79% during April to September (i.e. winter rainfall). The region can therefore be regarded as semi-desert. The salinity of the sea water at Langebaan was 35 0/00. The average temperature range of the air in summer is from 16.5? C...

Upwelling and ocean structures off Algoa Bay and the south-east ...

African Journals Online (AJOL)

This situation is investigated off Algoa Bay and along the south-east coast to Port Alfred, where measurements demonstrate that marked temperature variability occurs at the coastline, particularly in summer when temperature structures are more intense and easterly-component winds more common. There is no indication ...

Paleomagnetic investigation of late Quaternary sediments of south San Francisco Bay, California

Science.gov (United States)

Hillhouse, John W.

1977-01-01

Paleomagnetic inclinations of the Late Quaternary sediments of South San Francisco Bay were determined from bore hole samples collected near Dumbarton Bridge. The sediments consist of estuarine muds and nonmarine sand deposits, floored by bedrock of the Mesozoic Franciscan Formation. - Beneath Dumbarton Bridge the entire sedimentary fill is normally polarized; therefore, the fill postdates the Brunhes-Matayama polarity reversal (700,000 y. B.P.). Magnetic time lines such as the Mono Lake excursion (24,000 y. B.P.) and the reversed Blake event (110,000 y B.P.) were not found in this bore hole. In addition to Holocene and modern deposits of San Francisco Bay, an older estuarine unit occurs in the stratigraphic section. The older unit was deposited during a period of high sea level, tentatively correlated with the Sangamon interglacial period. Because evidence of the Blake event is not present in the older estuarine unit, the proposed age of this unit could not be confirmed. Although the Holocene estuarine deposits of South San Francisco Bay carry stable remanent magnetization, a reliable record of geomagnetic secular variation could not be recovered because the water-saturated sdiment was deformed by drilling.

33 CFR 334.770 - Gulf of Mexico and St. Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor...

Science.gov (United States)

2010-07-01

... Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.; restricted.... Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla... referred to as the “Tyndall Drone Launch Corridor.” (b) The regulations. (1) Military usage of areas is...

EKSISTENSI DAN MOTIVASI PRAMUWISATA LOKAL PEREMPUAN DI DAYA TARIK WISATA ALAS KEDATON

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Gusti Ayu Putu Putri Indira Suari

2017-01-01

Full Text Available Keberadaan pramuwisata lokal yang seluruhnya berjenis kelamin perempuan menjadi keunikan tersendiri bagi Alas Kedaton sebagai suatu daya tarik wisata. Bertujuan untuk mengetahui eksistensi pramuwisata lokal perempuan di daya tarik wisata Alas Kedaton serta untuk mengetahui motivasi mereka bekerja sebagai pramuwisata lokal perempuan di daya tarik wisata Alas Kedaton. Jenis data yang digunakan adalah data kuantitatif dan kualitatif. Sedangkan sumber data yakni data primer dan sekunder. Data dikumpulkan melalui observasi, wawancara, kuesioner dan dokumentasi. Informan ditentukan secara purposive sampling. Terdapat 45 responden yang dipilih sebagai sampel dengan menggunakan metode simple random sampling. Dan teknik analisis data yang digunakan adalah analisis deskriptif kualitatif dan deskriptif kuantitatif. Hasil menunjukkan bahwa eksistensi pramuwisata lokal perempuan di daya tarik wisata Alas Kedaton dari awal terbentuknya sampai saat ini dapat dikatakan masih eksis. Meskipun jumlah pramuwisata lokal perempuan di daya tarik wisata Alas Kedaton berkurang dibandingkan ketika awal terbentuknya. Sedangkan motivasi mereka bekerja sebagai pramuwisata lokal di daya tarik wisata Alas Kedaton adalah untuk memenuhi beberapa kebutuhan seperti physiological needs, safety and security needs, affiliation or acceptance needs, esteem needs, dan self actualization. Dan rata-rata responden menjawab motivasi mereka bekerja sebagai pramuwisata lokal perempuan di daya tarik wisata Alas Kedaton adalah untuk memenuhi kebutuhan afiliasi atau affiliation or acceptance needs.

ANALISIS PERBANDINGAN OUTPUT DAYA LISTRIK PANEL SURYA SISTEM TRACKING DENGAN SOLAR REFLECTOR

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I B Kd Surya Negara

2016-03-01

Full Text Available Indonesia merupakan negara beriklim tropis yang memiliki intensitas radiasi matahari yang sangat besar dan intensitas radiasi tersebut berpotensi untuk dikembangkan menjadi Pembangkit Listrik Tenaga Surya. Efisiensi dari panel surya saat ini masih perlu pertimbangan lebih lanjut. Efisiensi panel surya yang rendah ini, berpengaruh pada hasil output daya listrik yang dihasilkan. Upaya untuk meningkatkan output daya listrik panel surya, yaitu dengan sistem tracking dan solar reflector. Penelitian ini bertujuan untuk mengetahui output daya listrik yang lebih maksimal. Metode dalam penelitian ini menggunakan sistem tracking yang pergerakannya berdasarkan waktu dan menggunakan solar reflector dengan cermin datar dan sudut reflector yang berbeda. Hasil dari perbandingan sistem tracking dengan solar reflector yaitu solar reflector menghasilkan output daya listrik lebih besar dibandingan dengan sistem tracking, dimana solar reflector menghasilkan output daya listrik sebesar 0.1224 Watt dan sistem tracking sebesar 0.1136 Watt.

Pengaruh Awareness, Daya Tarik Iklan Terhadap Brand Attitude Indomie Kota Tangsel

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Roby Irzal Maulana

2018-04-01

Full Text Available Penelitian ini memiliki tujuan untuk menjelaskan bagaimana peran pemediasian brand awareness pada pengaruh daya tarik iklan terhadap brand attitude mi instan Indomie di Kota Tangerang Selatan. Populasi yang digunakan merupakan konsumen Indomie di Kota Tangerang Selatan Banten. Sampel ditentukan dengan metode purposive sampling berjumlah 200 responden. Data dikumpulkan melalui kuesioner dan dianalisis menggunakan teknik analasis jalur dan uji sobel. Hasil penelitian menunjukkan bahwa daya tarik iklan dan brand awareness masing-masing berpengaruh positif secara signifikan terhadap brand attitude serta adanya peran mediasi dari brand awareness yang memperkuat hubungan daya tarik iklan dan brand attitude.Disarankan bagi manajemen Indomie untuk lebih memperkuat daya tarik dalam iklannya sehingga sikap positif konsumen terhadap merek Indomie dapat dipertahankan melalui tingkat kesadaran merek yang tinggi.

PERANCANGAN SISTEM TRANSFER DAYA NIRKABEL UNTUK UNMANNED AERIAL VEHICLE (UAV MICRO JENIS QUADCOPTER

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Setyawan Wahyu Pratomo

2016-11-01

Full Text Available Dalam Unmanned Aerial Vehicle ( UAV jenis Quadcopter, sumber catu daya berupa baterai yang hanya mampu bekerja 10-15 menit di udara merupakan permasalahan tersendiri bagi performa Quadcopter. Sedangkan perfomansi dari Quadcopter pada ketinggian yang susah dijangkau, diharapkan peran operator yang selama ini harus mengkoneksikan secara manual kabel charging ke baterai bisa digantikan oleh sistem secara otomatis ketika baterai akan habis. Untuk itu dalam paper ini membahas suatu perancangan sistem transfer daya nirkabel untuk Quadcopter mengisi ulang baterai tanpa bantuan operator dan tidak harus dilakukan pendaratan di atas tanah. Proses isi ulang ( charging baterai bisa dilakukan di atas gedung maupun di landasan yang telah terpasang transfer daya nirkabel. Tujuannya adalah meningkatkan performansi kerja Quadcopter di udara sesuai dengan kegunaanya. Dari perancangan sistem transfer daya nirkabel untuk Unmanned Aerial Vehicle ( UAV jenis Quadcopter mengisi ulang ( charging baterai, diperoleh hasil efisiensi transfer daya terbaik sebesar 62,24% dengan jarak efektif 10 cm. Frekuensi sistem transfer daya nirkabel diperoleh dari rangkaian Colpitss Oscillator sebesar 333,1 KHz dengan menerapkan prinsip induksi elektromagnetik.

Penelusuran Daya Maksimum Pada Panel Photovoltaic Menggunakan Kontrol Logika Fuzzy Di Kota Surabaya

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Kurnia Ma'rifatin Pebriningtyas

2013-03-01

Full Text Available Kebutuhan energi semakin lama semakin meningkat dan sumber energi utama yang digunakan saat ini mempunyai keterbatasan untuk memperbaruinya. Photovoltaic adalah komponen semikonduktor yang berfungsi mengkonversi energi matahari menjadi energi listrik. Cahaya matahari yang termasuk sumber energi primer tersedia sepanjang tahun di semua tempat di permukaan bumi. Tingkat penyinaran yang berbeda-beda menyebabkan daya keluaran dari photovoltaic bervariasi. Karakteristik V-I sel surya adalah nonlinier, berubah terhadap intensitas dan temperatur permukaan photovoltaic. Secara umum, terdapat titik yang unik pada kurva V-I atau kurva P-V, yang dinamakan Maximum Power Point (MPP. Titik MPP tersebut tidak diketahui namun dapat dicari dengan algoritma penjejak atau algoritma MPPT. Pada tugas akhir ini dilakukan perancangan penelusuran daya maksimum menggunakan kontrol logika fuzzy. Sistem penelusuran daya maksimum yang menggunakan modul BPSX-60 dapat menghasilkan daya 59,4W pada keadaan standard condition (intensitas 1000W/m2 dan temperatur 250C. Sistem penelusuran daya maksimum pada panel photovoltaic mampu menelusuri daya maksimum dengan kondisi lingkungan (intensitas cahaya matahari dan temperatur pada permukaan panel photovoltaic yang berubah-ubah.

Inhomogeneity of optical turbulence over False Bay (South Africa)

Science.gov (United States)

Ullwer, Carmen; Sprung, Detlev; van Eijk, Alexander M. J.; Gunter, Willi; Stein, Karin

2017-09-01

Atmospheric turbulence impacts on the propagation of electro-optical radiation. Typical manifestations of optical turbulence are scintillation (intensity fluctuations), beam wander and (for laser systems) reduction of beam quality. For longer propagation channels, it is important to characterize the vertical and horizontal distribution (inhomogeneity) of the optical turbulence. In the framework of the First European South African Transmission ExpeRiment (FESTER) optical turbulence was measured between June 2015 and February 2016 on a 2 km over-water link over False Bay. The link ran from the Institute of Maritime Technology (IMT) in Simons Town to the lighthouse at Roman Rock Island. Three Boundary layer scintillometers (BLS900) allowed assessing the vertical distribution of optical turbulence at three different heights between 5 and 12 m above the water surface. The expected decrease of Cn2 with height is not always found. These results are analyzed in terms of the meteorological scenarios, and a comparison is made with a fourth optical link providing optical turbulence data over a 8.7 km path from IMT to Kalk Bay, roughly 36° to the north of the three 2 km paths. The results are related to the inhomogeneous meteorological conditions over the Bay as assessed with the numerical weather prediction tool, the Weather Forecast and Research model WRF.

First results on the Experiment FESTER on optical turbulence over False Bay South Africa: Dependencies and consequences

NARCIS (Netherlands)

Sprung, D.; Van Eijk, A.M.J.; Sucher, E.; Eisele, C.; Seiffer, D.; Stein, K.

2016-01-01

The experiment FESTER (First European South African Transmission ExpeRiment) took place in 2015 to investigate the atmospheric influence on electro-optical systems performance across False Bay / South Africa on a long term basis. Several permanent stations for monitoring electro-optical propagation

DAYA SAING DAN STRATEGI PENGEMBANGAN MINYAK SAWIT DI INDONESIA

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Jauhar Samudera Nayantakaningtyas

2012-11-01

Full Text Available ABSTRACTThe aims of this study were to analyze the competitiveness of Indonesian Crude palm oil CPO products in the international market and to analyze the strategy to improve the competitiveness of Indonesian CPO. The analysis methods used this research were descriptive qualitative methods. The tools used to analyze the competitiveness of palm oil is Revealed Comparative Advantages and Porter Diamond Theory, while the development of the strategy used to determine the SWOT method. Based on the analysis of Porter's Diamond System and revealed comparative advantages, this study concluded that the competitiveness of Indonesian CPO was pretty strong, but it still needed a strategy to strengthen its competitiveness especially on derivative products. Some of the routine strategies that need to be done every year, are the development of the CPO industry human resources through training and innovation activities, paying attention to national and international issues by improving government policies, downstream industrial development and palm oil value-added increase, enhance cooperation with manufacturers from other countries through promotions.Keywords: crude palm oil, competitiveness, strategy, analysis of porter's diamondABSTRAKTujuan penelitian ini adalah menganalisis daya saing produk Crude Palm Oil (CPO Indonesia di pasar internasional dan menganalisis strategi peningkatan daya saing CPO Indonesia. Metode pengolahan dan analisis data yang digunakan dalam penelitian ini adalah metode deskriptif kualitatif. Alat  yang digunakan untuk menganalisis daya saing minyak sawit  adalah Revealed Comparative Advantages dan Teori Berlian Porter, sedangkan untuk mengetahui strategi pengembangan digunakan metode SWOT. Hasil analisis Sistem Berlian Porter dan revealed comparative advantages disimpulkan bahwa daya saing CPO Indonesia cukup kuat, namun masih diperlukan adanya strategi untuk memperkuat terutama pada produk turunan CPO. Strategi rutin yang harus

Ecological evaluation of proposed dredged material from Winyah Bay, South Carolina

International Nuclear Information System (INIS)

Ward, J.A.; Gardiner, W.W.; Pinza, M.R.; Word, J.Q.

1993-10-01

The navigational channels of Winyah Bay, Georgetown Harbor, South Carolina require dredging to enable normal shipping traffic to use these areas. Before dredging, environmental assessments must be conducted to determine the suitability of this dredged sediment for unconfined, open-water disposal. The Charleston, South Carolina District Office of the US Army Corps of Engineers (USACE) requested that the Battelle/Marine Science Laboratory (MSL) collect sediment samples and conduct the required physical/chemical, toxicological, and bioaccumulation evaluations as required in the 1991 Implementation Manual. This report is intended to provide information required to address potential ecological effects of the Entrance Channel and Inner Harbor sediments proposed disposal in the ocean

An experimental study of radiative fluxes in the south Bay of Bengal

Indian Academy of Sciences (India)

Time series measurements of radiative fluxes were made onboard INS Sagardhwani (SD) in the south Bay of Bengal near DS3 (13°N and 87°E) during the BOBMEX field experiment. An inter- comparison experiment conducted at DS3 showed that the radiative fluxes measured by Kipp and Zonen, Albedo meter and net ...

JATI DIRI BANGSA DAN POTENSI SUMBER DAYA KONSTRUKTIF SEBAGAI ASET EKONOMI KREATIF DI INDONESIA

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Zumrotus Sa'adah

2015-10-01

Full Text Available Abstrak: Jati Diri Bangsa dan Potensi Sumber Daya Konstruktif Sebagai Aset Ekonomi Kreatif di Indonesia. Di tengah era pasar bebas ASEAN, menjadi negara yang unggul kompetitif adalah tugas masyarakat bersama dengan jati diri yang kokoh dengan memanfaatkan kekayaan budaya. Penelitian ini bertujuan untuk memahami peran jati diri bangsa dan potensi sumber daya konstruktif yang dapat dijadikan aset ekonomi kreatif di Indonesia. Penelitian ini merupakan penelitian kepustakaan yaitu penelitian yang dilaksanakan dengan menggunakan literatur. Hasil penelitian menunjukkan bahwa diperlukan sebuah identitas tentang jati diri bangsa yang dapat ditempuh melalui pendidikan karakter sehingga dapat menciptakan sumber daya manusia yang kreatif. Sedangkan untuk menumbuhkembangkan industri kreatif dapat ditempuh dengan strategi kolaborasi antara nilai budaya lokal dengan kebutuhan global menjadi produk globalisasi. Kata Kunci: jati diri bangsa, sumber daya konstruktif, ekonomi kreatif. Abstrak: Jati Diri Bangsa dan Potensi Sumber Daya Konstruktif Sebagai Aset Ekonomi Kreatif di Indonesia. Di tengah era pasar bebas ASEAN, menjadi negara yang unggul kompetitif adalah tugas masyarakat bersama dengan jati diri yang kokoh dengan memanfaatkan kekayaan budaya. Penelitian ini bertujuan untuk memahami peran jati diri bangsa dan potensi sumber daya konstruktif yang dapat dijadikan aset ekonomi kreatif di Indonesia. Penelitian ini merupakan penelitian kepustakaan yaitu penelitian yang dilaksanakan dengan menggunakan literatur. Hasil penelitian menunjukkan bahwa diperlukan sebuah identitas tentang jati diri bangsa yang dapat ditempuh melalui pendidikan karakter sehingga dapat menciptakan sumber daya manusia yang kreatif. Sedangkan untuk menumbuhkembangkan industri kreatif dapat ditempuh dengan strategi kolaborasi antara nilai budaya lokal dengan kebutuhan global menjadi produk globalisasi. Kata Kunci: jati diri bangsa, sumber daya konstruktif, ekonomi kreatif.

KELEMBAGAAN DAN STRATEGI PENINGKATAN DAYA SAING KOMODITAS CABAI KAPUPATEN GARUT

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Silmi Tsurayya

2015-03-01

Full Text Available The objectives of this study were to identify supply chains, analyze the institutions, formulate strategies for competitiveness enhancement, design competitiveness enhancement model, and determine the main strategies in competitiveness enhancement of chili pepper in Garut District. This study used primary data (observations, interviews, and questionnaires and secondary data (literature study. The data were processed and analyzed by Descriptive Analysis, SWOT Analysis, the House Model, and Pairwise Comparison. The results of this study showed that: 1 there were 6 supply chain structures in chili pepper distribution; 2 the major institutional sectors contributed to competitiveness enhancement of chili pepper including public sector, voluntary sector, and private sector; 3 SWOT Analysis obtained 15 alternative strategies; 4 the House Model as competitiveness enhancement model had 3 pillars consisting of products, human resource, and institutional and marketing; 5 the main strategies in competitiveness enhancement of chili pepper included Increase in the number of productions, Market expansion, and Partnership Strengthening and development. The managerial implications of the study suggest: 1 land expansion and plant arrangement pattern to ensure continuity of production quantities; 2 Optimization of the role of Agribusiness Sub-Terminal as the marketing institution; and 3 Maximization in the government’s role in facilitating farmer groups with associations or corporations.Keywords: institutional, the house model, competitiveness, chili, SWOTABSTRAKPenelitian ini bertujuan mengidentifikasi rantai pasok, menganalisis kelembagaan, merumuskan strategi peningkatan daya saing, merancang model peningkatan daya saing, dan menentukan strategi utama dalam peningkatan daya saing  komoditas cabai di Kabupaten Garut. Data yang digunakan terdiri dari data primer (observasi, wawancara, dan kuesioner dan data sekunder (studi literatur. Metode pengolahan dan

Estimates of bottom roughness length and bottom shear stress in South San Francisco Bay, California

Science.gov (United States)

Cheng, R.T.; Ling, C.-H.; Gartner, J.W.; Wang, P.-F.

1999-01-01

A field investigation of the hydrodynamics and the resuspension and transport of participate matter in a bottom boundary layer was carried out in South San Francisco Bay (South Bay), California, during March-April 1995. Using broadband acoustic Doppler current profilers, detailed measurements of turbulent mean velocity distribution within 1.5 m above bed have been obtained. A global method of data analysis was used for estimating bottom roughness length zo and bottom shear stress (or friction velocities u*). Field data have been examined by dividing the time series of velocity profiles into 24-hour periods and independently analyzing the velocity profile time series by flooding and ebbing periods. The global method of solution gives consistent properties of bottom roughness length zo and bottom shear stress values (or friction velocities u*) in South Bay. Estimated mean values of zo and u* for flooding and ebbing cycles are different. The differences in mean zo and u* are shown to be caused by tidal current flood-ebb inequality, rather than the flooding or ebbing of tidal currents. The bed shear stress correlates well with a reference velocity; the slope of the correlation defines a drag coefficient. Forty-three days of field data in South Bay show two regimes of zo (and drag coefficient) as a function of a reference velocity. When the mean velocity is >25-30 cm s-1, the ln zo (and thus the drag coefficient) is inversely proportional to the reference velocity. The cause for the reduction of roughness length is hypothesized as sediment erosion due to intensifying tidal currents thereby reducing bed roughness. When the mean velocity is <25-30 cm s-1, the correlation between zo and the reference velocity is less clear. A plausible explanation of scattered values of zo under this condition may be sediment deposition. Measured sediment data were inadequate to support this hypothesis, but the proposed hypothesis warrants further field investigation.

Control rod cluster drop time anomaly Guandong nuclear power station (Daya bay) and Electricite de France nuclear power stations (1450 MWe N4 Series)

International Nuclear Information System (INIS)

Olivera, J.J.; Naury, S.; Tricot, N.; Tran Dai, P.; Gama, J.M.

1996-01-01

The anomaly of control rod cluster drop time revealed at Guandong Nuclear Power Station in Daya Bay and in the Chooz B1 pilot unit for the N4 series, led to the replacement of the M1 type control rod cluster guide tubes with 1300 MWe PWR type guide tubes, adapted to the geometry of the Guandong reactors and the 1450 MWe reactors of the N4 series. The comparison of the drop times obtained with the 1300 MWe type control rod cluster guide 1300 MWe type control rod cluster guide tubes gave satisfactory results. These met the safety criterion for N4 series control rod cluster drop times (2.15 under hot shutdown conditions). The drop time tests which will be carried out in middle of and at the end of cycle 1 of Chooz B1 should make it possible to finally validate the solution already successfully implemented at Guandong. However, this anomaly has revealed the limits of representativeness of the experimental test loops with regard to the real reactor configuration. In view of this, it has been deemed necessary to ask Electricite de France to pursue its analysis both on the understanding of the phenomena which led to this anomaly and on the limits of the representativeness of the experimental test loops. (authors)

33 CFR 334.720 - Gulf of Mexico, south from Choctawhatchee Bay; guided missiles test operations area, Headquarters...

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Gulf of Mexico, south from..., DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE DANGER ZONE AND RESTRICTED AREA REGULATIONS § 334.720 Gulf of Mexico, south from Choctawhatchee Bay; guided missiles test operations area, Headquarters Air Proving...

DAYA SAING KAKAO INDONESIA DI PASAR INTERNASIONAL

Directory of Open Access Journals (Sweden)

Anggita Tresliyana

2015-07-01

Full Text Available Cocoa is one of the major Indonesian agricultural export products. Cocoa international market has great potential regarding world’s consumption growth, therefore Indonesia is expected to take advantage on existing opportunities. The aims of this study were to analyze the competitiveness of Indonesian cocoa beans and processed cocoa trade in the international market as well as the level of competition between cocoa exporting countries. By using Revealed Comparative Advantage (RCA and Spearman Rank Correlation, it showed that Indonesia had a comparative advantage as an cocoa exporter on the international market, the highest for cocoa beans and the lowest for cocoa paste; Indonesia also had a significant correlation to exporting countries in cocoa beans’ market (Ghana and cocoa paste’s market (Netherlands and Malaysia, the correlation suggests that there were high correlation between Indonesia and the exporting country in competing for market share.Keywords: cocoa, comparative advantage, international trade, competitiveness, market share, RCA ABSTRAKKakao merupakan salah satu komoditas pertanian unggulan ekspor Indonesia.  Pasar kakao memiliki potensi yang besar dilihat dari peningkatan konsumsi dunia, sehingga Indonesia diharapkan dapat memanfaatkan peluang yang ada.  Tujuan penelitian ini adalah menganalisis daya saing perdagangan biji kakao dan kakao olahan Indonesia di pasar internasional serta hubungan daya saing antar negara eksportir kakao. Dengan menggunakan Reavealed Comparative Advantage (RCA, dan Korelasi Rank Spearman, hasil analisis menunjukkan bahwa Indonesia memiliki keunggulan komparatif sebagai eksportir biji kakao dan kakao olahan di pasar internasional, tertinggi untuk biji kakao dan terendah untuk kakao pasta;  Indonesia juga memiliki korelasi yang signifikan di beberapa negara untuk pasar biji kakao (Ghana dan kakao pasta (Belanda dan Malaysia, korelasi tersebut menunjukkan bahwa terdapat hubungan daya saing yang cukup

COMPUTATIONAL MODEL TAHANAN KAPAL UNTUK MENENTUKAN KEBUTUHAN DAYA KAPAL BULK CARRIER 8664 DWT

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Erik Sugianto

2018-02-01

Full Text Available Faktor utama dalam menentukan daya mesin kapal adalah tahanan kapal. Umumnya, tahanan kapal dihitung menggunakan percobaan model pada towing tank. Namun biaya yang diperlukan sangat besar. Penelitian ini bertujuan menentukan tahanan total kapal dan memperkiraan kebutuhan daya mesin kapal bulk carrier 8664 DWT. Kapal dimodelkan menggunakan software perkapalan, kemudian perhitungan tahanan kapal dan kebutuhan daya kapal dilakukan. Selain itu dilakukan validasi hasil dengan perhitungan matematis Holtrop dan analisa perbandingan hasil dengan penelitian sebelumnya. Hasil analisa untuk kecepatan dinas maksimal 14 knots menunjukan tahanan total kapal adalah 286. 75 kN dan kebutuhan dayanya adalah 2950.31 kW. Sedangkan dengan perhitungan matematis Holtrop dihasilkan tahanan total 256.59 kN, ini terdapat selisih 10.52% dengan hasil permodelan komputer.Kata kunci: tahanan, model, daya, kapal

Metals and pesticides in commercial bivalve mollusc production areas in the North and South Bays, Santa Catarina (Brazil).

Science.gov (United States)

de Souza, R V; Garbossa, L H P; Campos, C J A; Vianna, L F de N; Vanz, A; Rupp, G S

2016-04-15

Concentrations of heavy metals were quantified in mussels Perna perna and Pacific oysters Crassostrea gigas in 28 cultivation sites in the North and South Bays, SC (Brazil). Concentrations of pesticides were also quantified in these bivalve, water and sediment samples collected in 14 cultivation sites on four occasions in the period October 2012-October 2013. Pesticides were not detected in any of the mussel, oyster, water or sediment samples. The South Bay was found to be generally more contaminated with As while the North Bay showed higher concentrations of Ni. Concentrations of Pb and Cd were below the limit of detection of the method (0.5mg/kg) in all samples. Mussels accumulated more As and Ni than oysters, while the opposite was observed for Cu. Metal concentrations were below the maximum levels for foodstuffs specified in the Brazilian legislation. Copyright © 2016 Elsevier Ltd. All rights reserved.

ANALISIS PENERAPAN AKUNTANSI LINGKUNGAN PADA RUMAH SAKIT UMUM DAERAH DAYA MAKASSAR

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Mitra Sari

2017-06-01

Full Text Available Mitra Sari.2016.Thesis. Environmental Accounting Application Analysis On Rumah Sakit Umum Daerah Daya Makassar. (Guided by Faridah, SE., M.Si., AK, CA as a consultant I and Setiawan S.Si., Psi, SE., MM consultant II. This research was conducted in June to July 2016 in the city of Makassar, Rumah Sakit Umum Daerah Daya Makassar. Based on the state of the environment is getting worse, it is possible for service companies to disclose environmental activities closely related to medical waste and non-medical as additional report complements the financial statements are required, but the trend is happening in Indonesia is very rare to enter activism into additional reports were presented. The research methodology used was the comparative method as well as interviews with the parties involved, observation, searches of documents related to the placement of environmental costs, and literature study. Based on an evaluation of the implementation of environmental accounting in Rumah Sakit Umum Daerah Daya Makassar, it can be concluded that Rumah Sakit Umum Daerah Daya Makassar have done the identification, recognition, measurement, Recording, presentation, and disclosure are as described SAP 1 Year 2010 and has also implemented environmental controls on wastes, operating results are good enough, but there are still some weaknesses, among others: Rumah Sakit Umum Daerah Daya Makassar has not revealed specifics about the presentation of accounting environment, in terms of recording the cost is still combined with other items that cognate.

ANALISIS EFISIENSI, EFEKTIVITAS DAN RESPONSIBILITAS KAPASITAS SUMBER DAYA MANUSIA PEMERINTAH DAERAH SRAGEN

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Agung Riyardi

2015-12-01

Full Text Available The research aim is analyzing the efficiency, effectiveness and responsibility of human resources capacity in Sragen government. The research design is a descriptive design. The variables are the short and long run efficiency and effectiveness, and the responsibility of human resources. Three data processing techniques which also involves the trend linier is used. The result shows that the short run efficiency of human resources consists of the human resources number and their composition, whereas the long run efficiency consists of the level of education and training, and facilities to develop them. The result also shows that short run effectiveness of human resources lies on the number of the collision reduction, whereas the long run effectiveness lies on the number financial incentives received. The other result is that the responsibility of human resources lies on the number of human resources involved in the public service activities and the reduction of people is disgruntled by the public service activities. Then, the efficiency capacity is optimal. Tujuan penelitian ini adalah menganalisis kapasitas efisiensi, efektivitas dan tanggung jawab sumber daya manusia di pemerintahan Sragen. Desain penelitian adalah desain deskriptif. Variabel yang digu­nakan adalah efisiensi jangka pendek dan jangka panjang dan efektivitas, dan tanggung jawab sumber daya manusia. Tiga data teknik pengolahan dan tren linier digunakan dalam penelitian. Hasilnya menun­jukkan bahwa efisiensi jangka pendek sumber daya manusia terdiri dari jumlah sumber daya manusia dan komposisinya, sedangkan efisiensi jangka panjang terdiri dari tingkat pendidikan dan pelatihan, dan fasilitas untuk mengembangkannya. Hasil penelitian ini juga menunjukkan bahwa efek­tivitas jangka pendek sumber daya manusia terletak pada jumlah tabrakan reduksi, sedangkan efektivitas jangka panjang terletak pada jumlah insentif keuangan yang diterima. Hasil lainnya adalah tanggungjawab sum

STUDI ETNOGRAFI PERILAKU PENGEMIS MASYARAKAT DESA PRAGAAN DAYA KABUPATEN SUMENEP

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RINA HARDIYANTINA

2016-04-01

Full Text Available Pragaan Daya village in Sumenep Regency is known as the village of beggars, for begging into people's daily work. Which became the main motive for people to do the work of begging is behavior "beg" hereditary so as to form a local cultural entities. In addition, the quality of human resources is still low which can result mindset people less creative and view life narrowly. Begging that can not be eliminated from Pragaan Daya vilagers be the reason why this work is still occupied them hereditary. Sumenep regency government has sought to address the begging behavior in their communities through the local legislation, the implementation of local government a persuasive approach to coaching, empowerment. Nonetheless, the fact that there are showing people in the hamlet village of Nong Pote vilages in Pragaan Daya still begging activity.

PENGARUH SUBTITUSI KACANG GUDE (Cajanuscajan TERHADAP KADAR PROTEIN DAN DAYA TERIMA KECAP KEDELAI

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Desinta Andriana

2014-07-01

Full Text Available Indonesia memiliki sumber daya alam melimpah, memiliki sumber daya kacang-kacangan yang potensial sebagai pengganti kedelai, salah satunya adalah kacang gude. Untuk mengurangi ketergantungan kedelai dalam pembuatan kecap diperlukan alternatif lain yaitu dengan memanfaatkan kacang gude dalam pembuatan kecap.Penelitian ini berjenis true eksperiment (eksperimen sungguhan dengan rancangan post test dengan kelompok kontrol. Jenis perlakuan subtitusi kacang gude dengan konsentrasi 0%, 10%, 20%, dan 30% dalam pembuatan kecap. Uji daya terima meliputi aspek warna, aroma, rasa dan kekentalan. Uji Kruskal Wallis untuk uji pengaruh kacang gude terhadap kadar protein, viskositas dan daya terima.Dari hasilpenelitiandidapatkanbahwatidakadapengaruhsubtitusikacanggudeterhadapkadar protein yaitup value 0,083 (>0,05, viskositaskecapyaitup value 0,932 (>0,05 dandayaterima (aspekwarna 0,684 (>0,05, aspek rasa 0,621 (>0,05, adapengaruhsubtitusikacanggudeterhadapdayaterima (aspek aroma 0,000 (<0,05 danaspekkekentalan 0,047 (<0,05. Berdasarkanujidayaterimamemberikantingkatkesukaan paling baikpadasubtitusikacanggude 30%.

North Inlet-Winyah Bay National Estuarine Research Reserve's (NERR) Estuarine Water Quality Data for the North Inlet and Winyah Bay Estuaries, Georgetown, South Carolina: 1993-2002

Data.gov (United States)

Baruch Institute for Marine and Coastal Sciences, Univ of South Carolina — The North Inlet Estuary and the adjacent lower northeastern section of the Winyah Bay Estuary were designated as part of the National Estuarine Research Reserve...

ANALISIS PENGENDALIAN DAYA REAKTOR PCMSR DENGAN LAJU ALIR PENDINGIN

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Iqbal Syafin Noha

2015-03-01

Full Text Available Passive Compact Molten Salt Reactor (PCMSR merupakan pengembangan dari Molten Salt Reactor (MSR yang memiliki karakter berbeda dengan lima reaktor generasi IV lainnya, yaitu menggunakan bahan bakar leburan garam. Pada reaktor MSR, garam lebur tidak digunakan sebagai pendingin tetapi digunakan sebagai medium pembawa bahan bakar. Dengan fase bahan bakar yang berupa garam lebur LiF-BeF2-ThF4-UF4, maka dapat dilakukan pengendalian daya dengan mengatur laju aliran bahan bakar dan pendingin. Tujuan penelitian ini adalah untuk mengetahui pengaruh perubahan laju alir pendingin terhadap daya reaktor PCMSR. Analisis dilakukan dengan empat jenis masukan untuk perubahan laju alir pendingin, yaitu masukan step, ramp, eksponensial, dan sinusoidal. Untuk masukan step, laju alir pendingin dibuat berubah secara mendadak. Selanjutnya untuk masukan ramp dan eksponensal, perubahan laju alir masing-masing dibuat perlahan secara linear dan mengikuti fungsi eksponensial. Kemudian untuk masukan sinusoidal, laju alir berubah naik turun secara periodik dengan memvariasikan frekuensi dari perubahan laju alir tersebut. Hasil penelitian menunjukkan bahwa penurunan laju alir pendingin sebesar 50% dari laju pendingin sebelumnya, menyebabkan daya pada reaktor PCMSR turun sebesar 63% dari daya sebelumnya. Jika terjadi fluktuasi laju aliran pendingin, maka semakin cepat perubahan tersebut, maka respon daya yang diberikan semakin kecil. Pada frekuensi yang sangat cepat, daya reaktor menjadi konstan dan cenderung tidak memiliki respon terhadap laju aliran. Hal ini merupakan salah satu aspek keselamatan reaktor, karena reaktor tidak merespon perubahan yang terlalu cepat. Kemampuan reaktor mengatur daya menyesuaikan laju aliran pendingin merupakan aspek keselamatan lainnya. Kata kunci : PCMSR, pengendalian daya, laju alir pendingin, uji respon   Passive Compact Molten Salt Reactor (PCMSR is the development of Molten Salt Reactor (MSR which has different character from other five

PENENTUAN NILAI TUKAR MATA UANG ASING DENGAN MENERAPKAN KONSEP PARITAS DAYA BELI

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Ivan Haryanto

2000-01-01

Full Text Available The concept of relative purchasing power parity is applied to evaluate the exchange rates for currencies such as: the German Mark, Japanese Yen, British Poundsterling, French Franc, Swedish Krona, Italian Lira, and the Canadian Dollar against the USA dollar. Another objective of the study is to evaluate the sensitivity of consumer price indices to exchange rates for each country as well as to test for differences between atual exchange rates and their PPP predicted rates. The results show that in the long-run, actual exchange rates continually move toward the purchasing power predicted rates. On the other hand, in the short-run, the actual and parity exchange rates often experience disequilibrium. It was also found that positive changes in society's purchasing power caused positive changes in the actual exchange rates in every country except Japan. Abstract in Bahasa Indonesia : Konsep paritas daya beli relatif diterapkan untuk mengukur nilai tukar mata uang beberapa negara yaitu - Mark Jerman, Yen Jepang, Poundsterling Inggris, Franc Perancis, Krona Swedia, Lira Italia dan Dolar Kanada, terhadap Dolar Amerika. Selain itu, penelitian ini bertujuan melihat sensitivitas perubahan indeks harga konsumen terhadap perubahan nilai tukar mata uang tiap negara terhadap Dolar Amerika serta menguji apakah terdapat perbedaan secara signifikan antara nilai tukar aktual dengan nilai tukar berdasarkan konsep paritas daya belinya. Hasil penelitian ini menunjukkan bahwa dalam jangka panjang, nilai tukar aktual akan bergerak kembali mendekati nilai tukar paritas daya belinya. Sebaliknya dalam jangka pendek, nilai tukar aktual dan nilai tukar paritas daya belinya seringkali mengalami disekuilibrium. Ditemukan juga bahwa setiap perubahan positif daya beli masyarakat menyebabkan adanya perubahan positif nilai tukar aktual mata uang setiap negara, kecuali negara Jepang. Kata kunci: paritas daya beli, mata uang, kurs valuta asing

Foraminiferal record of Holocene paleo-earthquakes on the subsiding south-western Poverty Bay coastline, New Zealand

International Nuclear Information System (INIS)

Hayward, B.W.; Sabaa, A.T.; Grenfell, H.R.; Cochran, U.A.; Clark, K.J.; Litchfield, N.J.; Wallace, L.M.; Marden, M.; Palmer, A.S.

2015-01-01

Foraminiferal faunas in 29 short cores (maximum depth 7 m) of estuarine and coastal wetland sediment were used to reconstruct the middle-late Holocene (last 7 ka) elevational history on the southern shores of Poverty Bay, North Island, New Zealand. This coast is on the southwest side of a rapidly subsiding area beneath western Poverty Bay. Modern Analogue Technique paleo-elevation estimates based on fossil foraminiferal faunas indicate that the four study areas have gradual late Holocene (<3.5 ka) subsidence rates that increase from the southwest (mean c. 0.5 m ka - - 1 ) to northeast (mean c. 1.0 m ka -1 ). Only two rapid, possibly co-seismic, vertical displacement events are recognised: (1) c. 1.2 m of subsidence at 5.7 ± 0.4 ka (cal yr BP), which may have been generated by a subduction interface earthquake centred offshore and recorded in other published studies in northern Hawkes Bay, c. 35 km to the south; and (2) c. 1 m of uplift (relative sea-level fall) at c. 4.5 ± 0.3 ka, which might have been generated by rupture on an offshore upper plate fault that also uplifted coastal terraces at Pakarae and Mahia, 40 km to the north and south of the study area, or by rupture on the subduction interface penetrating beneath Poverty Bay. No sudden displacement events are recognised during the last 4 ka although subsidence, possibly aseismic, has continued. (author).

Coral bleaching on high-latitude marginal reefs at Sodwana Bay, South Africa

International Nuclear Information System (INIS)

Celliers, Louis; Schleyer, Michael H.

2002-01-01

Coral bleaching, involving the expulsion of symbiotic zooxanthellae from the host cells, poses a major threat to coral reefs throughout their distributional range. The role of temperature in coral bleaching has been extensively investigated and is widely accepted. A bleaching event was observed on the marginal high-latitude reefs of South Africa located at Sodwana Bay during the summer months of 2000. This was associated with increased sea temperatures with high seasonal peaks in summer and increased radiation in exceptionally clear water. The bleaching was limited to Two-mile Reef and Nine-mile Reef at Sodwana Bay and affected -1 from May 1994 to April 2000. High maximum temperatures were measured (>29 deg. C). The lowest mean monthly and the mean maximum monthly temperatures at which coral bleaching occurred were 27.5 and 28.8 deg. C, respectively, while the duration for which high temperatures occurred in 2000 was 67 days at ≥27.5 deg. C (4 days at ≥28.8 deg. C). Increased water clarity and radiation appeared to be a synergistic cause in the coral bleaching encountered at Sodwana Bay

Analisis Aliran Daya Berbasis Injeksi Arus dalam Bentuk Vektor

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Ahmad Wira Satriawan

2017-11-01

Full Text Available Tulisan ini memaparkan hasil penelitian yang telah dilakukan untuk membandingkan metode analisis aliran daya berbasis injeksi arus dalam bentuk vektor dengan format polar dan rektangular. Penelitian ini dilakukan untuk memperoleh metode analisa aliran daya dengan perhitungan yang lebih cepat dan akurat, serta iterasi yang lebih sedikit. Metode iterasi Newton Raphson diadopsi dalam penelitian ini dan bahasa pemrograman Python serta library komputasinya digunakan. Analisis terhadap karakteristik konvergensi dari kedua format dilakukan pada IEEE 14-bus Test System. Dari penelitian ini diperoleh hasil bahwa format rektangular lebih unggul dibandingkan format polar untuk kasus yang diteliti.

Waterbird egg mercury concentrations in response to wetland restoration in south San Francisco Bay, California

Science.gov (United States)

Ackerman, Joshua T.; Herzog, Mark P.; Hartman, Christopher A.; Watts, Trevor C.; Barr, Jarred R.

2014-01-01

The conversion of 50–90 percent of 15,100 acres of former salt evaporation ponds to tidal marsh habitat in the south San Francisco Bay, California, is planned as part of the South Bay Salt Pond Restoration Project. This large-scale habitat restoration may change the bioavailability of methylmercury. The South Bay already is known to have high methylmercury concentrations, with methylmercury concentrations in several waterbirds species more than known toxicity thresholds where avian reproduction is impaired. In this 2013 study, we continued monitoring bird egg mercury concentrations in response to the restoration of the Pond A8/A7/A5 Complex to a potential tidal marsh in the future. The restoration of the Pond A8/A7/A5 Complex began in autumn 2010, and the Pond A8 Notch was opened 5 feet (one of eight gates) to muted tidal action on June 1, 2011, and then closed in the winter. In autumn 2010, internal levees between Ponds A8, A7, and A5 were breached and water depths were substantially increased by flooding the Pond A8/A7/A5 Complex in February 2011. In June 2012, 15 feet (three of eight gates) of the Pond A8 Notch was opened, and then closed in December 2012. In June 2013, 15 feet of the Pond A8 Notch again was opened, and the Pond A8/A7/A5 Complex was a relatively deep and large pond with muted tidal action in the summer. This report synthesizes waterbird data from the 2013 breeding season, and combines it with our prior study’s data from 2010 and 2011.

Phase 1 studies summary of major findings of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California

Science.gov (United States)

Valoppi, Laura

2018-04-02

Executive SummaryThe South Bay Salt Pond Restoration Project (Project) is one of the largest restoration efforts in the United States. It is located in South San Francisco Bay of California. It is unique not only for its size—more than 15,000 acres—but also for its location adjacent to one of the nation’s largest urban areas, home to more than 4 million people (Alameda, Santa Clara, and San Mateo Counties). The Project is intended to restore and enhance wetlands in South San Francisco Bay while providing for flood management, wildlife-oriented public access, and recreation. Restoration goals of the project are to provide a mosaic of saltmarsh habitat to benefit marsh species and managed ponds to benefit waterbirds, throughout 3 complexes and 54 former salt ponds.Although much is known about the project area, significant uncertainties remain with a project of this geographic and temporal scale of an estimated 50 years to complete the restoration. For example, in order to convert anywhere from 50 to 90 percent of the existing managed ponds to saltmarsh habitat, conservation managers first enhance the habitat of managed ponds in order to increase use by waterbirds, and provide migratory, wintering, and nesting habitat for more than 90 species of waterbirds. Project managers have concluded that the best way to address these uncertainties is to carefully implement the project in phases and learn from the outcome of each phase. The Adaptive Management Plan (AMP) identifies specific restoration targets for multiple aspects of the Project and defines triggers that would necessitate some type of management action if a particular aspect is trending negatively. U.S. Geological Survey (USGS) biologist Laura Valoppi served as the project Lead Scientist and oversaw implementation of the AMP in coordination with other members of the Project Management Team (PMT), comprised of representatives from the California State Coastal Conservancy, California Department of Fish and

Produksi Gas hidrogen dari Limbah Alumunium dan Uji Daya Listrik dengan Fuel Cell

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Yusraini DIS

2017-03-01

Full Text Available Teknologi Fuel Cell adalah teknologi masa depan yang ramah lingkungan. Bahan baku untuk fuel cell adalah hidrogen. Produksi hidrogen dari limbah alumunium dan storage telah dilakukan. Penelitian ini bertujuan untuk memanfaatkan limbah alumunium (alumunium foil dan kaleng minuman yang direaksikan dengan larutan beralkalin untuk menghasilkan hidrogen. Hidrogen yang dihasilkan sebanding dengan tekanan yang terukur yang diukur dengan CASSY LAB Version 1.41. Hasilnya adalah: a. Semakin tinggi konsentrasi NaOH (5 %, 10 % dan 15 % semakin cepat reaksi produksi hidrogen berlangsung. b. Jumlah limbah alumunium yang berbeda (0,01 g, 0,05 g dan 0,10 g kurang berpengaruh terhadap waktu reaksi jika konsentrasi NaOHnya sama. c. Temperatur yang dihasilkan berkisar antara 27 oC - 33,7 oC, semakin banyak jumlah alumunium yang direaksikan semakin tinggi temperatur yang dihasilkan. d. Daya listrik yang dihasilkan dari 0,10 gram alumunium foil adalah sebesar 45-51 watt dengan daya rata-rata 0,08 watt per detik. e. Daya listrik yang dihasilkan dengan kaleng Coca Cola adalah sebesar 12,13 watt dengan daya rata-rata 0,009 watt per detik.

Perilaku Wirausaha Industri Keramik Berskala Kecil untuk Meningkatkan Daya Saing Produk di Malang

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Sri Hadiati

2008-01-01

Full Text Available The purposes of the study was to find out the explanation of ceramic entrepreneurs’ respond to the environment factors affecting competitiveness of small scale ceramic industries (SSCIs. The environment factors are internal and external then form a strategy. The research was carried out in Malang using a survey and case study. Data were collected using questionnaire and in-depth interview from 107 SSCIs that was chosen randomly chosen from 180 registered SSCIs. Structural Equation Modeling (SEM with AMOS software was used to analyze data. The research results showed that environment factors were both directly and indirectly affecting SSCI’s competitiveness through strategy. In order to increase competitiveness then SSCIs need to empower the existing producers’ association in some aspects such as provision of raw material, pricing the products, and marketing. Training, education, and research need to be developed and improved by local government and higher education institutions. Abstract in Bahasa Indonesia: Penelitian ini bertujuan mencari penjelasan tentang perilaku wirausaha keramik terhadap faktor-faktor lingkungan yang mempengaruhi daya saing industri keramik berskala kecil di Malang. Secara spesifik penelitian ini bertujuan mempelajari pengaruh faktor internal dan eksternal terhadap strategi dan daya saing serta pengaruh strategi terhadap daya saing industri keramik berskala kecil di Malang. Faktor-faktor lingkungan tersebut dapat dikelompokkan kedalam faktor internal dan eksternal perusahaan. Penelitian diambil dari 107 industri keramik berskala kecil yang dipilih secara acak sederhana dari 180 unit usaha yang ada di Malang. Data dikumpulkan menggunakan kuesioner dan wawancara mendalam. Variabel dalam penelitian dibagi menjadi 4 kelompok yaitu, faktor lingkungan internal dan eksternal dari usaha kecil, strategi dan daya saing industri keramik berskala kecil. Data yang diperoleh selanjutnya dianalisis menggunakan Structural Equation

Desain Antena Hexagonal Patch Array Berbasis Sistem Transfer Daya Wireless pada Frekuensi 2,4 GHz

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Herma Nugroho R. A. K.

2016-06-01

Full Text Available Pada penelitian ini telah didesain antena hexagonal patch array yang dapat digunakan sebagai perangkat catu daya wireless. Antena hexagonal patch array ini didesain untuk menangkap gelombang radio (RF pada frekuensi 2,4 GHz yang dapat diaplikasikan sebagai antena pada Wireless Local Area Network (WLAN. Desain antena dilakukan menggunakan software CST Microwave studio, kemudian dilakukan pabrikasi dan pengukuran secara riil. Parameter pengujian antena hexagonal patch array meliputi return loss, Voltage Standing Wave Ratio (VSWR, gain, bandwidth, dan daya. Metode yang digunakan adalah pemodelan transmission line dan corporate feed line untuk pengaturan perubahan jarak antar patch antena. Perubahan variabel juga diteliti pengaruhnya terhadap parameter antena khususnya daya terima antena yang kemudian ditransmisikan ke rangkaian power harvester. Nilai parameter antena hasil simulasi menunjukkan nilai return loss adalah -33,38 dB, VSWR sebesar 1,041, gain sebesar 8,81 dBi, bandwidth adalah 0,084 GHz, daya sebesar 0,499 W (-3 dBm. Sedangkan parameter hasil pengukuran dari antena yang telah dipabrikasi adalah nilai return loss sebesar -33,21 dB, VSWR sebesar 1,048, gain sebesar 5 dBi, bandwidth adalah 0,145 GHz, daya sebesar -33 dBm.

ANALISIS SISTEM KONTROL MOTOR DC SEBAGAI FUNGSI DAYA DAN TEGANGAN TERHADAP KALOR

OpenAIRE

Dzakwan, Akhmad

2008-01-01

Telah dilakukan penelitian daya dan sistem kontrol tegangan rangkaian peningkatan suhu motor DC. Banyak energi listrik yang diubah menjadi panas sehingga dapat menyebabkan peningkatan suhu motor DC pada stator dan rotor. Dalam penelitian ini, daya dan sistem kontrol tegangan rangkaian mendeteksi peningkatan suhu motor DC dan juga sebagai umpan balik variabel. Kontrol sistem pasokan tenaga listrik berdasarkan perubahan tersebut. Dalam penelitian ini kami memperoleh tenaga maksimum dan tegangan...

33 CFR 334.220 - Chesapeake Bay, south of Tangier Island, Va.; naval firing range.

Science.gov (United States)

2010-07-01

... ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE DANGER ZONE AND RESTRICTED AREA REGULATIONS § 334.220 Chesapeake Bay, south of Tangier Island, Va.; naval firing range. (a) The danger zone. Beginning... to latitude 37°45′00″, longitude 76°09′48″; thence to latitude 37°45′00″, longitude 76°08′51″; and...

Perancangan Rectenna (Rectifier Antenna) Sebagai Pengubah Daya Elektromagnetik Menjadi Output DC Pada Frekuensi Wifi 2.4 Ghz

OpenAIRE

Ali Mustofa, ST., MT., Ahmad Fauzi., Rudy Yuwono, ST., M.Sc

2014-01-01

Penelitian ini membahas tentang perancangan dan pembuatan rectenna (rectifier antenna) sebagai pengubah daya elektromagnetik menjadi output DC yang bekerja pada frekuensi wifi 2.4 Ghz. Pemanenan energi ini merupakan salah satu alternatif konversi energi, di mana melalui proses ini dapat menghasilkan daya listrik yang dapat digunakan pada perangkat yang membutuhkan daya yang kecil. Dalam proses perancangan dan pembuatan rectenna ini dilakukan simulasi dengan menggunakan software Multisim 11 un...

Human and riverine impacts on the dynamics of seawater nutrient and carbon parameters in Kwangyang Bay, South Korea

Science.gov (United States)

Kim, Tae-Wook; Kim, Dongseon; Baek, Seung Ho; Kim, Young Ok

2015-04-01

We investigated seawater nutrient and carbon parameters in Kwangyang Bay, South Korea, which has been exposed to significant human influences, in each core month of four seasons for between 2010 and 2012. The survey data were analyzed using multivariate statistics analysis (cluster and factor analysis). As a result, we found that the Seomjin River (the fifth largest river in South Korea) and biological activity, including phytoplankton photosynthesis and bacterial decomposition, were the main factors determining the overall water quality of the bay. However, the impacts of these factors varied both spatially and seasonally, because the factors were linked with the geographical environments and seasonal variations in freshwater discharge. In particular, the Seomjin River was primarily responsible for nitrate, silicate, total alkalinity, and dissolved inorganic carbon, and exhibited a significant impact in the summer. During the past 10 years, nutrient loads from the river and industrial complexes to the bay have decreased. The impacts of this decrease are visible in the phosphate concentration, which has fallen to a third of its initial value. We also examined the potential role of atmospheric nitrogen deposition in nitrogen cycling in the study area.

Urgensi Penerapan Celestial Management Bagi Sumber Daya Manusia Di Bank Syariah

Directory of Open Access Journals (Sweden)

Trimulato Trimulato

2016-05-01

Full Text Available Abstract: Islamic banking currently has a strong legal law with the presence of the law number 21 of 2008 on banking syari'ah.Hal This adversely affects the existence of the banking Shari'ah are increasingly in demand by many. Islamic bank continues to grow and continue to open office services in various areas. Thus iru development of Islamic banks must be matched with adequate resources and qualified. Noted labor in Islamic banks continued to grow, from November 2014 to November 2015 grew to 23.51%. Not only the quantity but the quality should also be considered, it takes a celestial concept should be applied for the Management of human resources in Islamic banks. This paper uses a descriptive qualitative limitations in this paper is focused on the human resources that exist in the Islamic bank. The need for the application of celestial management for human resources in the bank syariahi. The results of this paper that the human resources in Islamic banks is growing, then the need for the application of celestial management for human resources in Islamic banks to create good quality. Because the Islamic bank is an institution whose business is inseparable from the rule of religion or spiritual aspect. Abstrak: Perbankan syari’ah saat ini telah memiliki payung hukum yang kuat dengan hadirnya undang-undang nomor 21 tahun 2008 tentang perbankan syari’ah.Hal ini sangat berpengaruh terhadap eksistensi dari perbankan syari’ah yang semakin diminati oleh banyak kalangan. Bank syari’ah terus berkembang dan terus membuka layanan kantor di berbagai daerah. Maka dari iru perkembangan bank syariah harus diimbangi dengan sumber daya yang mencukupi dan berkualitas. Tercatat tenaga kerja di bank syariah terus bertambah, dari November 2014 sampai November 2015 mengalami pertumbuhan hingga 23,51%. Tidak hanya dari kuantitas tapi kualitas juga harus diperhatikan, dibutuhkan sebuah konsep celestial manajement yang harus diterapkan bagi sumber daya manusia

Perencanaan Simulasi Pengaturan Pembangkitan Daya Pada Kapal Fast Patrol Boat 60 M dengan Propulsi Hybrid

Directory of Open Access Journals (Sweden)

Fikri Nuruddin Muzakki

2017-01-01

Full Text Available Sistem propulsi hybrid yang memberikan berbagai keuntungan untuk pengoperasian kapal, seperti pertimbangan konsumsi bahan bakar yang rendah, pengaturan kecepatan dengan penggunaan propulsi yang optimal ataupun khusus untuk jenis kapal tertentu. Tentunya sistem propulsi hybrid memiliki kelamahan pula, salah satunya adalah pengaturan pembangkitan daya yang kompleks dibandingkan dengan system propulsi lain. Setiap kecepatan membutuhkan daya yang berbeda dan bahan bakar yang berbeda pula. Keputusan yang kurang tepat dapat mengurangi keunggulan dari pemasangan sistem propulsi hybrid. Oleh karena itu dibutuhkan Decision Support System untuk membantu nahkoda menentukan pengaturan propulsi yang optimal pada kecepatan yang diinginkan dan pada kondisi yang ada pada perairan yang dilalui. Dalam makalah ini dibuat Decision Support System dengan input utama berupa kecepatan dalam knot, service margin, dan kebutuhan listrik. Kecepatan dan sevice margin digunakan untuk menentukan kebutuhan tenaga penggerak dan selanjutnya digunakan untuk analisa alat penggerak. Untuk digunakan referensi nahkoda dapat memilih propulsi yang optimal dengan konsumsi bahan bakar yang minimum, dan dengan jumlah daya yang diperlukan untuk pengoperaian tersebut. Berdasarkan hasil simulasi penggunaan Decision Support System pada kapal Fast Patrol Boat 60 m ini menujukkan pemakaian terbaik pada kecepatan 20 knot dengan menggunakan sistem Shaft Generator pada daya 1181 kW disertai pengoperasian genset pada daya 0 kW dan jumlah pemakaian bahan bakar 482,99 kg per jam.

New species of the genus Sinularia (Octocorallia: Alcyonacea) from Nha Trang Bay, South China Sea, Vietnam

NARCIS (Netherlands)

Dautova, T.N.; Ofwegen, van L.P.; Savinkin, O.V.

2010-01-01

A total of eight Sinularia species is described and depicted, all from Nha Trang Bay, Vietnam (South China Sea). Six are new to science: S. capricornis, S. multiflora, S. pumila, S. sarmentosa, S. torta, and S. uva. Two other ones represent just new records for Vietnam: S. rigida (Dana, 1846) and S.

A numerical model investigation of the impacts of Hurricane Sandy on water level variability in Great South Bay, New York

Science.gov (United States)

Bennett, Vanessa C. C.; Mulligan, Ryan P.; Hapke, Cheryl J.

2018-06-01

Hurricane Sandy was a large and intense storm with high winds that caused total water levels from combined tides and storm surge to reach 4.0 m in the Atlantic Ocean and 2.5 m in Great South Bay (GSB), a back-barrier bay between Fire Island and Long Island, New York. In this study the impact of the hurricane winds and waves are examined in order to understand the flow of ocean water into the back-barrier bay and water level variations within the bay. To accomplish this goal, a high resolution hurricane wind field is used to drive the coupled Delft3D-SWAN hydrodynamic and wave models over a series of grids with the finest resolution in GSB. The processes that control water levels in the back-barrier bay are investigated by comparing the results of four cases that include: (i) tides only; (ii) tides, winds and waves with no overwash over Fire Island allowed; (iii) tides, winds, waves and limited overwash at the east end of the island; (iv) tides, winds, waves and extensive overwash along the island. The results indicate that strong local wind-driven storm surge along the bay axis had the largest influence on the total water level fluctuations during the hurricane. However, the simulations allowing for overwash have higher correlation with water level observations in GSB and suggest that island overwash provided a significant contribution of ocean water to eastern GSB during the storm. The computations indicate that overwash of 7500-10,000 m3s-1 was approximately the same as the inflow from the ocean through the major existing inlet. Overall, the model results indicate the complex variability in total water levels driven by tides, ocean storm surge, surge from local winds, and overwash that had a significant impact on the circulation in Great South Bay during Hurricane Sandy.

Analisis Variasi Warna Terhadap Kualitas Daya Serap dan Kuat Tarik Tissue Napkin Paper

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Ragil Meita Alfathy

2017-10-01

Full Text Available Tisu telah menjadi kebutuhan sehari–hari masyarakat dunia karena tisu merupakan benda pembersih praktis yang dapat dibawa kemana–mana. Inovasi yang dilakukan oleh para produsen adalah dengan memberikan corak motif bahkan warna untuk menambah nilai estetika dari tisu terutama pada tissue napkin paper atau kertas tisu serbet. Seiring berjalannya waktu, nilai estetika pada tissue napkin paper menjadi pertimbangan utama konsumen dalam pemilihan tisu dibandingkan fungsi utama kertas tissue napkin paper sebagai alat pembersih sehingga konsumen melupakan kualitas fisik dari tissue napkin paper. Tujuan penelitian ini untuk mengidentifikasi potensi perbedaan kuat tarik dan daya serap tissue napkin paper dengan dan tanpa colourant. Tissue napkin paper dihitung volume air yang terserap secara radial dan gaya yang dibutuhkan tisu dengan luas permukaan 0,042m2  untuk merobeknya, sehingga diketahui bahwa tissue napkin berwana merah, hijau, kuning dan putih memiliki persentase kualitas daya serap secara berturut-turut 38,89%, 42,78%, 41,67%, 46,67%  dan daya kuat tarik 78,3N/m2; 103,3N/m2; 140,4N/m2; 141,5N/m2. Colourant mengubah struktur pore menjadi lebih sempit dan jarak permukaan serat selulosa menjadi semakin panjang. Sehingga terjadi penurunan daya serap dan kuat tarik tissue napkins paper dengan colourant meskipun tidak dalam taraf yang signifikan.

Bathymetry and digital elevation models of Coyote Creek and Alviso Slough, South San Francisco Bay, California

Science.gov (United States)

Foxgrover, Amy C.; Finlayson, David P.; Jaffe, Bruce E.; Fregoso, Theresa A.

2012-01-05

In 2010 the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center completed three cruises to map the bathymetry of the main channel and shallow intertidal mudflats in the southernmost part of south San Francisco Bay. The three surveys were merged to generate comprehensive maps of Coyote Creek (from Calaveras Point east to the railroad bridge) and Alviso Slough (from the bay to the town of Alviso) to establish baseline bathymetry prior to the breaching of levees adjacent to Alviso and Guadalupe Sloughs as part of the South Bay Salt Pond Restoration Project (http://www.southbayrestoration.org). Since 2010 the USGS has conducted twelve additional surveys to monitor bathymetric change in this region as restoration progresses.The bathymetry surveys were conducted using the state-of-the-art research vessel R/V Parke Snavely outfitted with an interferometric sidescan sonar for swath mapping in extremely shallow water. This publication provides high-resolution bathymetric data collected by the USGS. For the 2010 baseline survey we have merged the bathymetry with aerial lidar data that were collected for the USGS during the same time period to create a seamless, high-resolution digital elevation model (DEM) of the study area. The series of bathymetry datasets are provided at 1 m resolution and the 2010 bathymetric/topographic DEM at 2 m resolution. The data are formatted as both X, Y, Z text files and ESRI Arc ASCII files that are accompanied by Federal Geographic Data Committee (FGDC) compliant metadata.

Manajemen Sumber Daya Teknologi Informasi Laboratorium Komputer Menggunakan Balanced Scorecard (BSC dan COBIT 5

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M. Panji Ismail

2017-05-01

Full Text Available Laboratorium komputer merupakan salah satu sarana pembelajaran yang berbasis Teknologi Informasi (TI yang terdiri dari tiga sumber daya TI, yaitu software, hardware, dan brainware. Tidak adanya kesesuaian antara kemampuan hardware dengan spesifikasi hardware yang digunakan dapat menghambat pengguna (brainware dalam melakukan praktikum dan pembelajaran di laboratorium. Selain itu, ketidaksesuaian tersebut juga mengakibatkan software berjalan lambat dan computer sering error sehingga praktikum menjadi terganggu dan berjalan tidak lancar. Untuk mengetahui kesesuaian antar sumber daya TI yang ada di laboratorium dibutuhkan proses pengukuran manajemen sumber daya TI yang ada saat ini. Skala likert menjadi salah satu metode untuk mengukur kinerja software, hardware, dan tata kelola laboratorium saat ini. Hasil pengukuran kemudian dievaluasi menggunakan framework Balance Scorecard (BSC dengan melalui beberapa tahapan dan penyelarasan strategi TI. Setelah mengetahui hasil evaluasi dan kendala-kendala apa saka yang ada dalam melakukan pengelolaan maka langkah berikutnya adalah menentukan bagaimana cara memperbaiki dan melakukan peningkatan tata kelola TI. COBIT 5 akan menjadi framework pelengkap untuk memperbaiki sekaligus memprediksi pengembangan manajemen sumber daya TI. Hasil penelitian ini menunjukkan bahwa integrase antara COBIT 5 dengan Balance Scorecard (BSC memberikan kemampuan dalam melakukan pengukuran tata kelola laboratorium serta memberikan kemampuan untuk meningkatkan pelayanan secara kontinyu.

DAYA SAING PRODUK TURUNAN SUSU INDONESIA DI PASAR DUNIA

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Lina Yanti

2012-06-01

Full Text Available ABSTRACTThis research purposes were (1 to measures the competitiveness of Indonesian milk derivative product in international market based on its comparative advantage, (2 to analyze the dynamics of Indonesian milk and also to analyze the commodity’s competitive position in the international market through its dynamic export product performance, (3 to analyze dominant factors that influencing Indonesian dairy export growth based on constant market share analysis. The analysis methods used to measure the competitiveness of Indonesian milk in this research are based on revealed comparative advantage analysis, Export product dynamic analysis (EPD, and constant market share analysis. The result from RCA showed that the Indonesian milk derivative products which are Milk not concentrated nor sweetened 1–6% fat (HS 040120, Milk and cream, concentrated or sweetened (HS 0402 and Buttermilk, curdled milk, cream, kephir, etc (HS 040390 do not have comparative advantage but for Milk and cream powder unsweetened > 1,5%  fat (HS 040221, Milk and cream nes sweetened or concentrated (HS 040299 and Cereal, flour, starch, milk preparations and products (HS19 have comparative advantage. The EPD found that all Indonesian milk derivative products are included in the Rising Star position. The result test using CMS analysis concluded that the most significant factor which affect the export growth for Indonesian HS 040390 and HS 0402 derivative products are the import growth effect, HS 19 is mainly dominated by commodity composition effect, and the export growth for the rest derivative products are dominated with the competitiveness effect. Therefore, it needs to be implemented efforts to enhance the competitiveness of dairy derived products IndonesiaKeywords: milk, competitiveness, revealed comparative advantage (RCA, export product dynamic (EPD, constant market share analysis (CMSAABSTRAKPenelitian ini bertujuan (1 menganalisis daya saing komoditas susu

Implementasi Algoritma Perturb and Observe untuk Mengoptimasi Daya Keluaran Solar Cell Menggunakan MPPT di Laboratorium Energi Baru Terbarukan

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Sri Utami

2017-02-01

Full Text Available Energi yang dihasilkan oleh sel surya sangat bervariasi dan sangat tergantung pada kondisi cuaca. Untuk mengoptimasinya digunakan maximum power point. Penelitian ini mengimplementasikan algoritma Perturb and Observe pada Maximum Power Point Tracker (MPPT sebagai kontroller untuk pembangkitan energi surya. Sistem dibangun menggunakan Arduino Uno R3 untuk mengekstraksi daya maksimum panel surya. Microcontroller ini mengontrol DC buck converter dan digunakan untuk charging baterai 6V. Metode ini beroperasi dengan memberi perturbing tegangan atau arus terminal array dan membandingkan daya yang dihasilkan dengan output panel surya. Diperlukan perturbing yang sesuai untuk mendapatkan nilai optimasi yang tepat. Validasi dari panel surya menggunakan metode yang diusulkan pada MPPT-nya memberikan performansi yang lebih baik dibuktikan pada nilai daya dan tegangannya. Menggunakan parameter perturbation 0.1, MPPT mampu mengoptimasi daya ouput panel surya sebesar 24.49 W dengan beban 5 ? dan nilai irradiasi 523 W/m2  dibandingkan dengan metode konvensional dengan beban sama dan nilai irradiasi sebesar 527 W/m2 yang menghasilkan daya keluaran 15.37 W

Is metal pollution a threat to the continued survival of the starfish in False Bay, South Africa?

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Adriaan J. Reinecke

2013-02-01

Full Text Available Urbanisation and industrial development in the catchment area of False Bay in South Africa are increasing and concern was raised about the effect of environmental pollutants on intertidal fauna such as starfish. The aim of the present study was to obtain initial descriptive baseline data over several seasons during 2000–2001 of metal concentrations in water, sediment and body samples of the chosen cushion starfish Parvulastra exigua (Lamarck, 1816 that occurs widely in the intertidal zone of False Bay. Concentrations of cadmium, copper, lead, nickel and zinc were measured in samples of the cushion starfish, water and sediment at five localities along the coast of False Bay. The samples were chemically analysed for metals by atomic spectrophotometry. The highest individually measured concentrations of cadmium (Cd in starfish and sediment were found in the northern coastal region between Strand and Muizenberg where most industrial activity and human settlement occur. Large variation in concentrations of all metals occurred between localities and seasons. The mean concentrations of Cd and Pb in water and sediment were in a few instances slightly higher than the recommended levels or target values of the South African marine water and sediment quality norms but still lower than those in various developed countries. Indications are that the bay was at the time of this study still less contaminated by metals in comparison with the coastal waters of various other countries. The accumulation of nonessential metals such as cadmium and lead in both sediment and bodies of starfish was nevertheless such that it can be assumed that environmental concentrations in some parts of the bay could over time build up to levels that are detrimental to the species as well as their predators. This study provided evidence that the cushion starfish in False Bay is exposed to several metals of which some are potentially hazardous since they tend to gradually accumulate

STRATEGI PENINGKATAN DAYA SAING DAERAH WILAYAH PENGEMBANGAN SATU KABUPATEN MALANG

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Chris Wijayanti Puspita

2017-03-01

Full Text Available Regional economic development is basically a multisectoral involving many development actors, so it needs cooperation and coordination among all interested parties. The purpose of this study is (1 to determine the appropriate criteria in measuring competitiveness, (2 finding the leading sectors, (3 make appropriate recommendations in order to increase regional competitiveness Region Development of Malang. Data analysis techniques using Multi Sector Analysis (MSA. The results showed (1 there are eleven criteria for measuring competitiveness, (2 Regional Development One Malang superior in the industrial sector, (3 Recommendation prepared is to strengthen the public private partnership, infrastructure improvements, ensure the availability of electricity and water. Pembangunan ekonomi daerah pada dasarnya bersifat multisektoral dengan melibatkan banyak pelaku pembangunan sehingga diperlukan kerja sama dan koordinasi di antara semua pihak yang berkepentingan. Tujuan penelitian ini adalah (1 menentukan kriteria yang tepat dalam mengukur daya saing, (2 menemukan sektor unggulan, (3 menyusun rekomendasi yang tepat dalam rangka  peningkatan daya saing daerah Wilayah Pengembangan satu Kabupaten Malang. Teknik analisis data menggunakan Multi Sector Analysis (MSA. Hasil penelitian menunjukkan (1 terdapat sebelas kriteria untuk mengukur daya saing, (2 Wilayah Pengembangan Satu Kabupaten Malang unggul dalam sektor industri, (3 rekomndasi yang disusun adalah memperkuat kerjasama pemerintah dengn swasta, perbaikan infrastruktur, menjamin ketersediaan listrik dan air.

Technique treatment of early stage support construction system for Gaoling mountain tunnel engineering of Daya Bay nuclear power station

International Nuclear Information System (INIS)

Ma Keli

2010-01-01

This article studies the technical treatment of primary support system used in Gaoling mountain tunnel construction process at Daya by nuclear power plant in combination with the new austrian tunneling construction method, this article first analyzes the design of primary support system, and the key point of the analyses lies in the primary support technical treatment schemes of Gaoling mountain tunnel with the examples of tunnel collapse and primary support design alteration for bias voltage section, then the construction technology of the primary support system is summarized, and the safety of wall rock is analyzed as well with the measurement data. In the end, suggestions are put forward on the design and construction of primary support system for tunnels on the basis of practical working experience. (author)

Unique thermal record in False Bay

CSIR Research Space (South Africa)

Grundlingh, ML

1993-10-01

Full Text Available Over the past decade False Bay has assumed a prime position in terms of research in to large South African bays. This is manifested by investigations that cover flow conditions modelling, thermal structure, management, biology and nutrients, geology...

Evaluation of social attraction measures to establish Forster’s tern (Sterna forsteri) nesting colonies for the South Bay Salt Pond Restoration Project, San Francisco Bay, California—2017 Annual Report

Science.gov (United States)

Hartman, C. Alex; Ackerman, Joshua T.; Herzog, Mark P.; Wang, Yiwei; Strong, Cheryl

2018-05-31

Forster’s terns (Sterna forsteri), historically one of the most numerous colonial-breeding waterbirds in South San Francisco Bay, California, have had recent decreases in the number of nesting colonies and overall breeding population size. The South Bay Salt Pond (SBSP) Restoration Project aims to restore 50–90 percent of former salt evaporation ponds to tidal marsh habitat in South San Francisco Bay. This restoration will remove much of the historical island nesting habitat used by Forster’s terns, American avocets (Recurvirostra americana), and other waterbirds. To address this issue, the SBSP Restoration Project organized the construction of new nesting islands in managed ponds that will not be restored to tidal marsh, thereby providing enduring island nesting habitat for waterbirds. In 2012, 16 new islands were constructed in Pond A16 in the Alviso complex of the Don Edwards San Francisco Bay National Wildlife Refuge, increasing the number of islands in this pond from 4 to 20. However, despite a history of nesting on the four historical islands in Pond A16 before 2012, no Forster’s terns have nested in Pond A16 since the new islands were constructed.In 2017, we used social attraction measures (decoys and electronic call systems) to attract Forster’s terns to islands within Pond A16 to re-establish nesting colonies. We maintained these systems from March through August 2017. To evaluate the effect of these social attraction measures, we also completed waterbird surveys between April and August, where we recorded the number and location of all Forster’s terns and other waterbirds using Pond A16, and monitored waterbird nests. We compared bird survey and nest monitoring data collected in 2017 to data collected in 2015 and 2016, prior to the implementation of social attraction measures, allowing for direct evaluation of social attraction efforts on Forster’s terns.To increase the visibility and stakeholder involvement of this project, we engaged in

Analisis kesesuaian dan daya dukung ekowisata bahari Pulau Sebesi, Provinsi Lampung

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Yar Johan

2015-05-01

Full Text Available Abstract. The Sebesi Island has coral reefs, mangrove and seagrass ecosystems, and therefore this island has the potenticy to be developed as a tourism destination object. The objectives of the present study were to analysis the suitability and carrying of Sebesi Island for for marine ecotourism activities of diving and snorkeling. The primary data were collected through field sampling, direct observation of field conditions, questionnaires and interviews. The secondary data were collected from previous studies, journals, technical reports and related agencies. The results showed that the Sebesi Island was suitable for diving and snorkeling activities  (S2 category with the carrying capacity for diving and snorkeling activities were 2,394 person/day and 2,489 person/day, respectively. Keywords: coral reef, marine ecotourism, suitability, carrying capacity, Sebesi Island   Abstrak. Pulau Sebesi berpotensi untuk dikembangkan menjadi salah satu Objek Daerah Tujuan Wisata (ODTW. Ekosistem Pulau Sebesi sebagian besar merupakan ekosistem terumbu karang, mangrove dan lamun. Penelitian tentang analisis kesesuaian dan daya dukung ekowisata bahari Pulau Sebesi Provinsi Lampung bertujuan mengkaji kesesuaian kawasan Pulau Sebesi untuk kegiatan ekowisata bahari yaitu diving dan snorkeling dan menganalisis daya dukung (carryng capacity kawasan Pulau Sebesi. Pengumpulan data primer dilakukan melalui sampling, observasi langsung di lapangan, kuisioner, wawancara terbuka/langsung dan wawancara mendalam  di lokasi penelitian. Data sekunder dikumpulkan dengan penelusuran berbagai pustaka, dan instansi terkait. Hasil penelitian menunjukkan bahwa jenis kegiatan ekowisata bahari diving dan snorkling termasuk dalam kategori sesuai (S2, dengan daya dukung kawasan 2.394/hari orang untuk diving dan 2.489 orang/hari untuk snorkling. Kata kunci: terumbu karang, ekowisata bahari, kesesuaian, daya dukung, Pulau Sebesi

A numerical model investigation of the impacts of Hurricane Sandy on water level variability in Great South Bay, New York

Science.gov (United States)

Bennett, Vanessa C. C.; Mulligan, Ryan P.; Hapke, Cheryl J.

2018-01-01

Hurricane Sandy was a large and intense storm with high winds that caused total water levels from combined tides and storm surge to reach 4.0 m in the Atlantic Ocean and 2.5 m in Great South Bay (GSB), a back-barrier bay between Fire Island and Long Island, New York. In this study the impact of the hurricane winds and waves are examined in order to understand the flow of ocean water into the back-barrier bay and water level variations within the bay. To accomplish this goal, a high resolution hurricane wind field is used to drive the coupled Delft3D-SWAN hydrodynamic and wave models over a series of grids with the finest resolution in GSB. The processes that control water levels in the back-barrier bay are investigated by comparing the results of four cases that include: (i) tides only; (ii) tides, winds and waves with no overwash over Fire Island allowed; (iii) tides, winds, waves and limited overwash at the east end of the island; (iv) tides, winds, waves and extensive overwash along the island. The results indicate that strong local wind-driven storm surge along the bay axis had the largest influence on the total water level fluctuations during the hurricane. However, the simulations allowing for overwash have higher correlation with water level observations in GSB and suggest that island overwash provided a significant contribution of ocean water to eastern GSB during the storm. The computations indicate that overwash of 7500–10,000 m3s−1 was approximately the same as the inflow from the ocean through the major existing inlet. Overall, the model results indicate the complex variability in total water levels driven by tides, ocean storm surge, surge from local winds, and overwash that had a significant impact on the circulation in Great South Bay during Hurricane Sandy.

Waterbird nest monitoring program in San Francisco Bay (2005-10)

Science.gov (United States)

Ackerman, Joshua T.; Herzog, Mark P.

2012-01-01

Historically, Forster’s Terns (Sterna forsteri), American Avocets (Recurvirostra americana), and Black-necked Stilts (Himantopus mexicanus) were uncommon residents of San Francisco Bay, California (Grinnell and others, 1918; Grinnell and Wythe, 1927; Sibley, 1952). Presently, however, avocets and stilts are the two most abundant breeding shorebirds in San Francisco Bay (Stenzel and others, 2002; Rintoul and others, 2003). More than 4,000 avocets and 1,000 stilts, roughly 20 percent of their San Francisco Bay wintering populations, breed within the estuary, making San Francisco Bay the largest breeding area for these species on the Pacific Coast (Stenzel and others, 2002; Rintoul and others, 2003). Forster’s Terns were first observed breeding in the San Francisco Bay in 1948 (110 nests); they had increased to over 4000 individuals by the 1980s (Sibley, 1952; Gill, 1977; Harvey and others, 1992; Carter and others, 1990) and were estimated at 2000–3000 for 1998–2002; (Strong and others, 2004).It is hypothesized that the relatively large size of the current waterbird breeding populations is a result of the creation of artificial salt evaporation ponds from the 1930s through the 1950s (Gill, 1977; Goals Project, 1999). Until recently, these salt ponds and associated islands used by waterbirds for nesting have been managed relatively similarly and have supported large breeding waterbird populations. Recently, the South Bay Salt Pond Restoration Project has implemented plans to convert 50–90 percent of the 15,000 acres of salt ponds in the South San Francisco Bay back to tidal marsh habitat. Therefore, there is concern that the Restoration Project, while benefiting other native species, could negatively influence local breeding populations of waterbirds that are reliant on salt pond habitats for both breeding and foraging. A primary goal of the South Bay Salt Pond Restoration Project is to maintain current breeding waterbird populations (South Bay Salt Pond Long

Chesapeake Bay plume dynamics from LANDSAT

Science.gov (United States)

Munday, J. C., Jr.; Fedosh, M. S.

1981-01-01

LANDSAT images with enhancement and density slicing show that the Chesapeake Bay plume usually frequents the Virginia coast south of the Bay mouth. Southwestern (compared to northern) winds spread the plume easterly over a large area. Ebb tide images (compared to flood tide images) show a more dispersed plume. Flooding waters produce high turbidity levels over the shallow northern portion of the Bay mouth.

33 CFR 334.670 - Gulf of Mexico south and west of Apalachicola, San Blas, and St. Joseph bays; air-to-air firing...

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Gulf of Mexico south and west of Apalachicola, San Blas, and St. Joseph bays; air-to-air firing practice range, Tyndall Air Force Base, Fla. 334..., DEPARTMENT OF DEFENSE DANGER ZONE AND RESTRICTED AREA REGULATIONS § 334.670 Gulf of Mexico south and west of...

Contrasting sedimentation patterns in two semi-enclosed mesotidal bays along the west and south coasts of Korea controlled by their orientation to the regional monsoon climate

Science.gov (United States)

Hong, Seok Hwi; Chun, Seung Soo; Chang, Tae Soo; Jang, Dae Geon

2017-08-01

Sedimentation patterns of tidal flats along the Korean west coast have long been known to be largely controlled by the monsoon climate. On the other hand, much less is known about the effect of the monsoon on sedimentation in coastal embayments with mouths of different geographic orientations. Good examples are Hampyeong and Yeoja bays along the west and south coasts, respectively. Both have narrow entrances, but their mouths open toward the northwest and the south, respectively. With mean tidal ranges of 3.46 and 3.2 m, respectively, the two bays experience similar tidal regimes and are hence excellent candidates to compare the effect of different exposure to the same regional monsoon climate on their respective sediment distribution patterns. The winter monsoon, in particular, is characterized by strong northwesterly winds that directly impact the west coast, but blow offshore along the south coast. For the purpose of this study, surficial sediment samples were collected from intertidal and subtidal flats of the two bays, both in summer and winter. Grain-size analyses were carried out by sieving (sand fraction) and Sedigraph (mud fraction). In the case of Yeoja Bay, the sediments consist mostly of mud (mean grain sizes of 5.4 to 8.8 phi). Seasonal changes are very subtle, the sediments being slightly coarser in summer when silt-dominated sediments are supplied by two streams to the northern parts of the bay in response to heavy rainfall. With the exception of the deeper tidal channels, Yeoja Bay is characterized by a thick mud blanket the year round, which is modulated by processes associated with the summer monsoon that predominantly blows from the east. Textural parameters suggest severely restricted sediment mixing on the subtidal and intertidal flats, the overall low energy situation preventing sands from reaching the tidal flats. The sediments of Hampyeong Bay, by contrast, are characterized by a distinct shoreward fining trend. Mean grain sizes average

APLIKASI GEOSPASIAL MENGGUNAKAN ARCGIS 10.3 DALAM PEMBUATAN PETA DAYA HANTAR LISTRIK DI CEKUNGAN AIRTANAH SUMOWONO

Directory of Open Access Journals (Sweden)

Thomas Triadi Putranto

2017-03-01

Full Text Available Air tanah sebagai air bersih merupakan salah satu kebutuhan primer manusia yang dimanfaatkan dalam berbagai kepentingan manusia serta untuk air minum. Airtanah memiliki kualitas dimana salah satu parameter fisiknya adalah daya hantar listrik (DHL. Dalam suatu Cekungan Airtanah (CAT, airtanah memiliki keberagaman nilai daya hantar listrik yang dipengaruhi oleh faktor infiltrasi dan lingkungan. Nilai DHL dapat dijadikan suatu acuan mengenai kelayakan suatu airtanah sebagai air minum. Sebagai salah satu sumber yang paling diminati masyarakat, maka masyarakat juga perlu untuk mengetahui kualitas dari airtanah tersebut melalui parameter daya hantar listrik sehingga peta daya hantar listrik daerah CAT Sumowono dapat menjadi suatu informasi bagi masyarakat yang menggunakan airtanah dari CAT Sumowono tersebut. Maka dari itu perlu adanya pembuatan peta daya hantar listrik daerah CAT Sumowono agar masyarakat merasa nyaman dan aman dalam memanfaatkan airtanah. Metode interpolasi data DHL menggunakan analisis geostatistik yang terdapat pada perangkat lunak ArcGIS 10.3. Metode interpolasi yang digunakan adalah Inverse Distance Weighting (IDW, Radial Basis Functions (RBF dan Empirical Bayesian Kriging (EBK. Dari keseluruhan data yang terinterpolasi, didapatkan dua kelas kualitas airtanah berdasarkan nilai DHL, yaitu Sangat Baik (<250 μS/cm dan Baik (250-750 μS/cm. Metode interpolasi yang dinilai paling seimbang adalah metode RBF. Melalui peta DHL hasil interpolasi metode RBF diketahui persebaran daerah dengan kelas sangat baik pada daerah CAT Sumowono mencakup 52,8% dari luas CAT dan 47,2% masuk ke dalam kelas baik.

Chondrichthyan occurrence and abundance trends in False Bay ...

African Journals Online (AJOL)

Commercial fishing in False Bay, South Africa, began in the 1600s. Today chondrichthyans are regularly taken in fisheries throughout the bay. Using a combination of catch, survey and life history data, the occurrence and long-term changes in populations of chondrichthyans in False Bay are described. Analyses of time ...

Coral bleaching on high-latitude marginal reefs at Sodwana Bay, South Africa

Energy Technology Data Exchange (ETDEWEB)

Celliers, Louis; Schleyer, Michael H

2002-12-01

Coral bleaching, involving the expulsion of symbiotic zooxanthellae from the host cells, poses a major threat to coral reefs throughout their distributional range. The role of temperature in coral bleaching has been extensively investigated and is widely accepted. A bleaching event was observed on the marginal high-latitude reefs of South Africa located at Sodwana Bay during the summer months of 2000. This was associated with increased sea temperatures with high seasonal peaks in summer and increased radiation in exceptionally clear water. The bleaching was limited to Two-mile Reef and Nine-mile Reef at Sodwana Bay and affected <12% of the total living cover on Two-mile Reef. Montipora spp., Alveopora spongiosa and Acropora spp. were bleached, as well as some Alcyoniidae (Sinularia dura, Lobophytum depressum, L. patulum). A cyclical increase in sea temperature (with a period of 5-6 years) was recorded during 1998-2000 in addition to the regional temperature increase caused by the El Nino Southern Oscillation phenomenon. The mean sea temperature increased at a rate of 0.27 deg. C year{sup -1} from May 1994 to April 2000. High maximum temperatures were measured (>29 deg. C). The lowest mean monthly and the mean maximum monthly temperatures at which coral bleaching occurred were 27.5 and 28.8 deg. C, respectively, while the duration for which high temperatures occurred in 2000 was 67 days at {>=}27.5 deg. C (4 days at {>=}28.8 deg. C). Increased water clarity and radiation appeared to be a synergistic cause in the coral bleaching encountered at Sodwana Bay.

Marine littoral diatoms from the Gordon’s bay region of False Bay, Cape Province, South Africa

CSIR Research Space (South Africa)

Giffen, MH

1971-01-01

Full Text Available and Comic/i for Scientific and Industrial Research, Pretoria (Received: 5.2. 1970) The Gordon?s Bay region occupies the north western corner of False Bay, a large rectangular bay, bounded on the west by the Cape Peninsula ending at Cape Point...

North Inlet • Winyah Bay (NIW) National Estuarine Research Reserve Meteorological Data, North Inlet Estuary, Georgetown, South Carolina: 1997 • 1999.

Data.gov (United States)

Baruch Institute for Marine and Coastal Sciences, Univ of South Carolina — The North Inlet Estuary and the adjacent lower northeastern section of Winyah Bay Estuary were designated as part of the National Estuarine Research Reserve System...

ANALISA SUMBER DAYA MANUSIA TEKNOLOGI INFORMASI MENGGUNAKAN KERANGKA KERJA COBIT 4.1” (STUDI KASUS : UNIT PELAKSANA TEKNIS TELEMATIKA UNIVERSITAS PEMBANGUNAN NASIONAL “VETERAN” JAWA TIMUR

Directory of Open Access Journals (Sweden)

Mohammad Idhom

2016-08-01

Full Text Available Pengelolaan sumber daya manusia merupakan proses dan struktur hubungan yang mengendalikan dan mengarahkan suatu organisasi perusahaan dalam mencapai tujuan organisasi dengan menambahkan nilai agar teknologi informasi dan prosesnya dapat diseimbangkan dengan resikonya. Diperlukan sebuah evaluasi sumber daya manusia dibidang teknologi informasi untuk mengetahui sejauh mana tingkatan pengelolaan terhadap sumber daya manusia di Unit Pelaksana Teknis Telematika saat ini. Sumber daya manusia di bidang teknologi informasi pada Unit Pelaksana Teknis Telematika membutuhkan pengembangan dan pengelolaan sesuai dengan harapan organisasi. Melihat terbatasnya sumber daya manusia di bidang teknologi informasi pada Unit Pelaksana Teknis Telematika sangat terbatas sehingga kegiatan operasional masih belum efektif dan memenuhi sasaran yang diharapkan. Melihat kondisi organisasi yang mengalami terbatas pada sumber daya manusia di bidang teknologi informasi dilakukan evaluasi secara detail dengan menggunakan COBIT 4.1.Dalam melakukan evaluasi sumber daya manusia dengan menggunakan kerangka kerja COBIT  yang berfokus pada Domain PO7 diharapkan dapat memberikan acuan dan perbaikan yang lebih efektif terhadap organisasi ke depannya.

33 CFR 334.660 - Gulf of Mexico and Apalachicola Bay south of Apalachicola, Fla., Drone Recovery Area, Tyndall Air...

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Gulf of Mexico and Apalachicola Bay south of Apalachicola, Fla., Drone Recovery Area, Tyndall Air Force Base, Fla. 334.660 Section 334... Apalachicola, Fla., Drone Recovery Area, Tyndall Air Force Base, Fla. (a) The restricted area. A rectangular...

78 FR 1246 - Otay River Estuary Restoration Project; South San Diego Bay Unit and Sweetwater Marsh Unit of the...

Science.gov (United States)

2013-01-08

...-FF08RSDC00] Otay River Estuary Restoration Project; South San Diego Bay Unit and Sweetwater Marsh Unit of the... scoping with regard to the environmental impact statement (EIS) for the proposed Otay River Estuary... one of the following methods. Email: [email protected] . Please include ``Otay Estuary NOI'' in the...

Urgensi Pengaturan Disclosure Requirements sebagai Syarat Aplikasi Hak Paten dalam Pemanfaatan Sumber Daya Genetik di Indonesia

OpenAIRE

Cendhayanie, Rara Amalia

2013-01-01

Sumber daya genetik (SDG) merupakan salah satu bagian dari sumber daya hayati (biological resources) dimana SDG mempunyai peranan yang penting sebagai fondasi yang pada intinya untuk menjamin keberlangsungan hidup umat manusia. Keberadaan Negara berkembang salah satunya adalah Indonesia dengan berbagai kekayaan alam dan potensi lainnya seperti SDG menjadi salah satu perhatian penting di tingkat Internasional khususnya dalam hal ini pemanfaatan SDG untuk berbagai kepentingan, yang kian meningk...

Karakteristik Habitat Perkembangbiakan Vektor Filariasis di Kecamatan Kodi Balaghar Kabupaten Sumba Barat Daya

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Mefi Mariana Tallan

2016-12-01

Full Text Available Abstract. Subdistrict scores balaghar is on filariasis endemic areas in the shouthwest district Sumba. Filariasis (elephantiasis is a chronic infectious disease caused by the filarial worm that attacks the lymph channels and lymph (lymphatic system that can cause acuteor chronic clinical symptoms and is transmitted by mosquitoes Mansonia, Anopheles, Culex, Amigeres. The purpose researchis to describe the characteristics of the environment and behavior to the incidence on filariasis in District Kodi Balaghar South western Sumba. This research is descriptive study with cross sectional approach that describes the spread of filariasis. Kodi was conducted in Southwest Sumba Regency Balaghar for eight months from April to November 2014. Foundas apotential habitat forlas mosquito breeding habitats where dominant is a puddle of water, springs, drains and small stream swith temperatures ranging from21-350C, from 0,22 to 795luxillumination, range pH between7,2 to 7,7, 0-0.1‰ salinity with elevation ranging from 25-117m/asl. Where is thespecies found in the breeding habitat on is An.vagus, An.barbirostris, An.annularis, Cx.vishnui, Cx.bitaeniorhynchus, Cx.quinquefasciatus, Ar. Kuchingensis.Keywords:Filariasis, Environment, Breeding habitatsAbstrak. Kecamatan Kodi Balaghar merupakan salah satu daerah endemis filariasis di Kabupaten Sumba Barat Daya. Filariasis (penyakit kaki gajah adalah penyakit menular menahun yang disebabkan oleh cacing filaria Wuchereria brancofti, Brugia malayidan B. timori yang menyerang saluran dan kelenjar getah bening (sistem limfatik yang dapat menyebabkan gejala klinis akut atau kronis dan ditularkan oleh nyamuk Mansonia, Anopheles, Culex, Amigeres. Penelitian ini bertujuan untuk mengetahui gambaran karakteristik lingkungan fisik dan biologi di Kecamatan Kodi Balaghar Kabupaten Sumba Barat Daya. Penelitian ini merupakan penelitian deskriptif dengan pendekatan cross sectional yaitu menggambarkan karakteristik lingkungan fisik

78 FR 56921 - South Bay Salt Pond Restoration Project, Phase 2 (Ponds R3, R4, R5, S5, A1, A2W, A8, A8S, A19...

Science.gov (United States)

2013-09-16

...-F2013227943] South Bay Salt Pond Restoration Project, Phase 2 (Ponds R3, R4, R5, S5, A1, A2W, A8, A8S, A19... South Bay Salt Pond Restoration Project and consists of restoring and enhancing over 2,000 acres of... Pollution Control Plant located at 700 Los Esteros Road, San Jose, California. The details of the public...

Dinoflagellate cysts from surface sediments of Saldanha Bay, South Africa: an indication of the potential risk of harmful algal blooms

CSIR Research Space (South Africa)

Joyce, LB

2005-02-01

Full Text Available Africa bZoology Department, University Cape Town, Rondebosch 7701, Cape Town, South Africa cCouncil for Scientific and Industrial Research, P.O. Box 320, Stellenbosch 7759, South Africa Received 14 May 2004; received in revised form 21 July 2004; accepted... 15 August 2004 Abstract The distribution and abundance of dinoflagellate cysts from recent coastal sediments in Saldanha Bay, was investigated, and compared to the cyst assemblages of the adjacent coastal upwelling system as reflected in the sediments...

Illumina-based analysis the microbial diversity associated with Thalassia hemprichii in Xincun Bay, South China Sea.

Science.gov (United States)

Jiang, Yu-Feng; Ling, Juan; Dong, Jun-De; Chen, Biao; Zhang, Yan-Ying; Zhang, Yuan-Zhou; Wang, You-Shao

2015-10-01

In order to increase our understanding of the microbial diversity associated with seagrass Thalassia hemprichii in Xincun Bay, South China Sea, 16S rRNA gene was identified by highthrough sequencing method. Bacteria associated with seagrass T. hemprichii belonged to 37 phyla, 99 classes. The diversity of bacteria associated with seagrass was similar among the geographically linked coastal locations of Xincun Bay. Proteobacteria was the dominant bacteria and the α-proteobacteria had adapted to the seagrass ecological niche. As well, α-proteobacteria and Pseudomonadales were associated microflora in seagrass meadows, but the interaction between the bacteria and plant is needed to further research. Burkholderiales and Verrucomicrobiae indicated the influence of the bay from anthropogenic activities. Further, Cyanobacteria could imply the difference of the nutrient conditions in the sites. γ-proteobacteria, Desulfobacterales and Pirellulales played a role in the cycle of sulfur, organic mineralization and meadow ecosystem, respectively. In addition, the less abundance bacteria species have key functions in the seagrass meadows, but there is lack knowledge of the interaction of the seagrass and less abundance bacteria species. Microbial communities can response to surroundings and play key functions in the biochemical cycle.

ANALISIS DAYA SAING DENGAN MENGGUNAKAN DESTINATION COMPETITIVENESS MODEL (Studi pada Heritage Tourism di Jawa

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Edriana Pangestuti

2017-06-01

Full Text Available This study sought to understand the relationship between destination competitiveness factors (such as the tourist’s image, service quality, satisfaction and behavioral intention. Little empirical research has explored these relationships from the heritage tourist’s perspective. A mixed method was used to achieve the study’s objectives and test the conceptual model. Twelve in-depth interviews and 400 questionnaire surveys (international and domestic were conducted using purposive technique sampling. A structural equation modeling (SEM technique was applied to identify, evaluate and develop the dimensions and test the relationship between these dimensions simultaneously. The final model showed that service quality has a significant relationship with satisfaction but an insignificant relationship with behavioral intention. In addition, this study provided new insights, determining that destination image and service quality factors influence destination competitiveness via the mediating of tourists’ satisfaction in a heritage tourism context. This shows the importance of destination image and service quality for measuring competitiveness. This present model will be useful as a guide for future research for measuring destination competitiveness in the heritage tourism context. Understanding destination competitiveness factors will help marketers predict future travel behavior and develop effective strategies in order to compete with other destinations. Keywords: destination image, satisfaction, service quality, behavioral intention and destination competitiveness ABSTRAK Penelitian ini berusaha memahami hubungan antara faktor daya saing destinasi (seperti citra destinasi, kualitas layanan, kepuasan dan niat perilaku. Beberapa penelitian serupa telah dilakukan dengan melihat dari perspektif wisatawan. Metode kualitatif dan kuantitatif (Mix method digunakan untuk menguji model konseptual. Dua belas narasumber dan 400 kuesioner (wisatawan

Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes

Science.gov (United States)

Wu, Yunchao; Zhang, Jingping; Liu, Songlin; Jiang, Zhijian; Arbi, Iman; Huang, Xiaoping; Macreadie, Peter Ian

2018-06-01

Daya Bay in the South China Sea (SCS) has experienced rapid nitrogen pollution and intensified eutrophication in the past decade due to economic development. Here, we estimated the deposition fluxes of nitrogenous species, clarified the contribution of nitrogen from precipitation and measured ions and isotopic composition (δ15N and δ18O) of nitrate in precipitation in one year period to trace its sources and formation processes among different seasons. We found that the deposition fluxes of total dissolved nitrogen (TDN), NO3-, NH4+, NO2-, and dissolved organic nitrogen (DON) to Daya Bay were 132.5, 64.4 17.5, 1.0, 49.6 mmol m-2•yr-1, respectively. DON was a significant contributor to nitrogen deposition (37% of TDN), and NO3- accounted for 78% of the DIN in precipitation. The nitrogen deposition fluxes were higher in spring and summer, and lower in winter. Nitrogen from precipitation contributed nearly 38% of the total input of nitrogen (point sources input and dry and wet deposition) in Daya Bay. The δ15N-NO3- abundance, ion compositions, and air mass backward trajectories implicated that coal combustion, vehicle exhausts, and dust from mainland China delivered by northeast monsoon were the main sources in winter, while fossil fuel combustion (coal combustion and vehicle exhausts) and dust from PRD and southeast Asia transported by southwest monsoon were the main sources in spring; marine sources, vehicle exhausts and lightning could be the potential sources in summer. δ18O results showed that OH pathway was dominant in the chemical formation process of nitrate in summer, while N2O5+ DMS/HC pathways in winter and spring.

The Holocene History of Placentia Bay, Newfoundland

DEFF Research Database (Denmark)

Sheldon, Christina; Seidenkrantz, Marit-Solveig; Reynisson, Njall

2013-01-01

Marine sediments analyzed from cores taken in Placentia Bay, Newfoundland, located in the Labrador Sea, captured oceanographic and climatic changes from the end of the Younger Dryas through the Holocene. Placentia Bay is an ideal site to capture changes in both the south-flowing Labrador Current ...

ANALISIS DAN MODEL STRATEGI PENINGKATAN DAYA SAING PRODUK EDAMAME BEKU

Directory of Open Access Journals (Sweden)

Sandryas Alief Kurniasanti

2015-03-01

penelitian ini adalah untuk menganalisis daya saing dan merumuskan prioritas alternatif strategi peningkatan daya saing produk edamame beku di PT MT 27. Metode yang digunakan dalam penelitian ini adalah Revealed Comparative Advantage untuk mengetahui kinerja ekspor dari produk edamame beku di pasar dunia, kemudian menganalisis faktor persaingan dengan menggunakan Diamond Porter’s Theory. Alternatif strategi dihasilkan dari analisis SWOT dan ditentukan prioritasnya dengan menggunakan analytical hierarchy process dari satu narasumber ahli. Hasil penelitian menunjukkan bahwa prioritas alternatif strategi peningkatan daya saing produk edamame beku PT MT 27 secara berurutan meliputi: (1 diversifikasi pasar, (2 diversifikasi produk, (3 meningkatkan kerjasama luar negeri, (4 pengembangan divisi Research and Development, (5 mengembangkan program Corporate Social Responsibility, (6 pengelolaan keuangan secara baik dan benar, serta (7 mengembangkan areal pertanian yang berbasis rumah kaca untuk menghindari cuaca buruk karena beriklim tropis. Implikasi Manajerial dari penelitian ini adalah mengembangkan pasar yang sudah ada, dan mengembangkan jenis produk yang diproduksi untuk memenuhi selera pasar ekspor dan juga penghematan biaya produksi. Kata kunci: daya saing, edamame beku, Mitratani Dua Tujuh, strategi daya saing

Penentuan Lokasi DG dan Kapasitor Bank dengan Rekonfigurasi Jaringan Untuk Memperoleh Rugi Daya Minimal Pada Sistem Distribusi Radial Menggunakan Algoritma Genetika

Directory of Open Access Journals (Sweden)

Ridho Fuaddi

2016-04-01

Full Text Available Jaringan distribusi yang paling umum digunakan ialah sistem dengan bentuk radial. Sistem ini memiliki bentuk yang sederhana serta biaya investasinya yang terbilang murah. Namun, kualitas pelayanan dayanya relatif buruk yang terjadi akibat adanya rugi daya pada saluran yang cukup besar. Hal itu terjadi karena jaringan distribusi yang merupakan ujung dari saluran transmisi memiliki perbandingan rasio R/X yang tinggi sehingga mengakibatkan rugi daya yang besar. Terdapat beberapa cara untuk mengurangi rugi daya pada jaringan distribusi yakni dengan menggunakan rekonfigurasi jaringan, pemasangan kapasitor bank dan pemasangan unit distributed generation (DG pada sistem distribusi. Pada tugas akhir ini, algoritma genetika merupakan metode yang digunakan untuk memecahkan suatu pencarian nilai dalam masalah optimasi penentuan lokasi DG dan kapasitor bank serta rekonfigurasi jaringan yang tepat untuk mendapatkan rugi daya yang paling minimal. Dari hasil pengujian yang telah dilakukan pada penelitian ini, diperoleh perbaikan rugi daya nyata paling optimal sebesar 94,92 % terhadap kondisi awal sistem distribusi radial 33-bus standart IEEE melalui penggabungan pemasangan DG dan kapasitor bank serta rekonfigurasi jaringan.

Perbandingan Pemanfaatan Sumber Daya Informasi Oleh Pengguna Digital Native dan Digital Immigrants pada Perpustakaan Universitas Sumatera Utara

OpenAIRE

Ramadani, Hidayatullah

2015-01-01

Penelitian ini bertujuan untuk mengetahui bagaimana perbandingan pemanfaatan sumber daya informasi bagi pengguna digital native dan digital immigrants, dan bagaimana pemanfaatan sumber daya informasi elektronik dan tercetak oleh kedua pengguna tersebut. Metode yang digunakan dalam penelitian ini adalah metode deskriptif yang bersifat komparatif. Teknik pengumpulan data dilakukan dengan memberikan daftar pernyataan yang berkaitan dengan masalah penelitian kepada pengguna ruang Layanan Dig...

A conceptual hydrologic model for a forested Carolina bay depressional wetland on the Coastal Plain of South Carolina, USA

Science.gov (United States)

Jennifer E. Pyzoha; Timothy J. Callahan; Ge Sun; Carl C. Trettin; Masato Miwa

2008-01-01

This paper describes how climate influences the hydrology of an ephemeral depressional wetland. Surface water and groundwater elevation data were collected for 7 years in a Coastal Plain watershed in South Carolina USA containing depressional wetlands, known as Carolina bays. Rainfall and temperature data were compared with water-table well and piezometer data in and...

Trends and habitat associations of waterbirds using the South Bay Salt Pond Restoration Project, San Francisco Bay, California

Science.gov (United States)

De La Cruz, Susan E. W.; Smith, Lacy M.; Moskal, Stacy M.; Strong, Cheryl; Krause, John; Wang, Yiwei; Takekawa, John Y.

2018-04-02

Executive SummaryThe aim of the South Bay Salt Pond Restoration Project (hereinafter “Project”) is to restore 50–90 percent of former salt evaporation ponds to tidal marsh in San Francisco Bay (SFB). However, hundreds of thousands of waterbirds use these ponds over winter and during fall and spring migration. To ensure that existing waterbird populations are supported while tidal marsh is restored in the Project area, managers plan to enhance the habitat suitability of ponds by adding islands and berms to change pond topography, manipulating water salinity and depth, and selecting appropriate ponds to maintain for birds. To help inform these actions, we used 13 years of monthly (October–April) bird abundance data from Project ponds to (1) assess trends in waterbird abundance since the inception of the Project, and (2) evaluate which pond habitat characteristics were associated with highest abundances of different avian guilds and species. For comparison, we also evaluated waterbird abundance trends in active salt production ponds using 10 years of monthly survey data.We assessed bird guild and species abundance trends through time, and created separate trend curves for Project and salt production ponds using data from every pond that was counted in a year. We divided abundance data into three seasons—fall (October–November), winter (December–February), and spring (March–April). We used the resulting curves to assess which periods had the highest bird abundance and to identify increasing or decreasing trends for each guild and species.

Assessment of occupational exposure to BTEX compounds at a bus diesel-refueling bay: A case study in Johannesburg, South Africa.

Science.gov (United States)

Moolla, Raeesa; Curtis, Christopher J; Knight, Jasper

2015-12-15

Of increasing concern is pollution by volatile organic compounds, with particular reference to five aromatic hydrocarbons (benzene, toluene, ethyl benzene and two isomeric xylenes; BTEX). These pollutants are classified as hazardous air pollutants. Due to the potential health risks associated with these pollutants, BTEX concentrations were monitored at a bus diesel-refueling bay, in Johannesburg, South Africa, using gas chromatography, coupled with a photo-ionization detector. Results indicate that o-xylene (29-50%) and benzene (13-33%) were found to be the most abundant species of total BTEX at the site. Benzene was within South African occupational limits, but above international occupational exposure limits. On the other hand, occupational concentrations of toluene, ethyl-benzene and xylenes were within national and international occupational limits throughout the monitoring period, based on 8-hour workday weighted averages. Ethyl-benzene and p-xylene concentrations, during winter, correspond to activity at the site, and thus idling of buses during refueling may elevate results. Overall, occupational air quality at the refueling bay is a matter of health concern, especially with regards to benzene exposure, and future reduction strategies are crucial. Discrepancies between national and international limit values merit further investigation to determine whether South African guidelines for benzene are sufficiently precautionary. Copyright © 2015 Elsevier B.V. All rights reserved.

Algae Reefs in Shark Bay, Western Australia, Australia

Science.gov (United States)

1990-01-01

Numerous algae reefs are seen in Shark Bay, Western Australia, Australia (26.0S, 113.5E) especially in the southern portions of the bay. The south end is more saline because tidal flow in and out of the bay is restricted by sediment deposited at the north and central end of the bay opposite the mouth of the Wooramel River. This extremely arid region produces little sediment runoff so that the waters are very clear, saline and rich in algae.

Discharge between San Antonio Bay and Aransas Bay, southern Gulf Coast, Texas, May-September 1999

Science.gov (United States)

East, Jeffery W.

2001-01-01

Along the Gulf Coast of Texas, many estuaries and bays are important habitat and nurseries for aquatic life. San Antonio Bay and Aransas Bay, located about 50 and 30 miles northeast, respectively, of Corpus Christi, are two important estuarine nurseries on the southern Gulf Coast of Texas (fig. 1). According to the Texas Parks and Wildlife Department, “Almost 80 percent of the seagrasses [along the Texas Gulf Coast] are located in the Laguna Madre, an estuary that begins just south of Corpus Christi Bay and runs southward 140 miles to South Padre Island. Most of the remaining seagrasses, about 45,000 acres, are located in the heavily traveled San Antonio, Aransas and Corpus Christi Bay areas” (Shook, 2000).Population growth has led to greater demands on water supplies in Texas. The Texas Water Development Board, the Texas Parks and Wildlife Department, and the Texas Natural Resource Conservation Commission have the cooperative task of determining inflows required to maintain the ecological health of the State’s streams, rivers, bays, and estuaries. To determine these inflow requirements, the three agencies collect data and conduct studies on the need for instream flows and freshwater/ saline water inflows to Texas estuaries.To assist in the determination of freshwater inflow requirements, the U.S. Geological Survey (USGS), in cooperation with the Texas Water Development Board, conducted a hydrographic survey of discharge (flow) between San Antonio Bay and Aransas Bay during the period May–September 1999. Automated instrumentation and acoustic technology were used to maximize the amount and quality of data that were collected, while minimizing personnel requirements. This report documents the discharge measured at two sites between the bays during May–September 1999 and describes the influences of meteorologic (wind and tidal) and hydrologic (freshwater inflow) conditions on discharge between the two bays. The movement of water between the bays is

Hyperspectral Biofilm Classification Analysis for Carrying Capacity of Migratory Birds in the South Bay Salt Ponds

Science.gov (United States)

Hsu, Wei-Chen; Kuss, Amber Jean; Ketron, Tyler; Nguyen, Andrew; Remar, Alex Covello; Newcomer, Michelle; Fleming, Erich; Debout, Leslie; Debout, Brad; Detweiler, Angela;

Cakupan Pemberian Obat Pencegahan Massal Filariasis di Kabupaten Sumba Barat Daya Tahun 2012-2013

Directory of Open Access Journals (Sweden)

Zahrotul Habibah

2016-03-01

Full Text Available Filariasis merupakan masalah kesehatan masyarakat terutama di Indonesia Timur antara lain di Kabupaten Sumba Barat Daya (SBD. Untuk mengeliminasi filariasis, WHO membuat program PemberianObat Pencegahan Masal (POPM dengan dietilkarbamazin sitrat dan albendazol setiap tahun selama 5tahun berturut-turut. Untuk mengetahui keberhasilan POPM, perlu dilakukan evaluasi cakupan POPM setiaptahun. Tujuan penelitian ini adalah mengetahui cakupan POPM di SBD pada tahun 2012-2013. Penelitanini menggunakan data POPM Dinas Kesehatan SBD pada tahun 2012 dan 2013. Cakupan POPM filariasisdihitung berdasarkan jumlah penduduk minum obat dibagi penduduk total dan jumlah penduduk sasaran.Target cakupan pengobatan penduduk sasaran adalah >85% dan dari penduduk total adalah  > 65%. Hasilpenelitian menunjukkan cakupan POPM filariasis berdasarkan penduduk total pada tahun 2012 adalah 1,96%dan tahun 2013 sebesar 1,13%. Cakupan POPM filariasis berdasarkan penduduk sasaran pada tahun 2012adalah 2,51% dan tahun 2013 adalah 1,35%. Disimpulkan bahwa cakupan POPM filariasis berdasarkanpenduduk sasaran dan penduduk total di SBD sangat rendah dan cakupan tahun 2013 lebih rendahdibandingkan tahun 2012. Kata kunci: W. bancrofti, B.malayi, B.timori, pemberian obat masal pencegahan, Sumba Barat Daya   Coverage of Mass Drugs Administration (MDA for Filariasis inSouth West Sumba on 2012-2013 AbstractFilariasis is a disease caused by Wuchereria bancrofti, Brugia malayi and Brugia timori. It is transmitted by mosquitos. It cause defect in patient’s physical condition, decrease social life, and increase health spending.WHO concepts a program to eliminate filariasis by Massal Drugs Administration (MDA of filariasis. It hasto be evaluated each year in five years by counting the coverage of MDA of filariasis in total population andtargeted population. This research used secondary data from Dinas Kesehatan in SBD to know the coverageof MDA of filariasis in SBD on 2012-2013. The coverage

Residency, Habitat Use and Sexual Segregation of White Sharks, Carcharodon carcharias in False Bay, South Africa

Science.gov (United States)

Kock, Alison; O’Riain, M. Justin; Mauff, Katya; Meÿer, Michael; Kotze, Deon; Griffiths, Charles

2013-01-01

White sharks (Carcharodon carcharias) are threatened apex predators and identification of their critical habitats and how these are used are essential to ensuring improved local and ultimately global white shark protection. In this study we investigated habitat use by white sharks in False Bay, South Africa, using acoustic telemetry. 56 sharks (39 female, 17 male), ranging in size from 1.7–5 m TL, were tagged with acoustic transmitters and monitored on an array of 30 receivers for 975 days. To investigate the effects of season, sex and size on habitat use we used a generalized linear mixed effects model. Tagged sharks were detected in the Bay in all months and across all years, but their use of the Bay varied significantly with the season and the sex of the shark. In autumn and winter males and females aggregated around the Cape fur seal colony at Seal Island, where they fed predominantly on young of the year seals. In spring and summer there was marked sexual segregation, with females frequenting the Inshore areas and males seldom being detected. The shift from the Island in autumn and winter to the Inshore region in spring and summer by females mirrors the seasonal peak in abundance of juvenile seals and of migratory teleost and elasmobranch species respectively. This study provides the first evidence of sexual segregation at a fine spatial scale and demonstrates that sexual segregation in white sharks is not restricted to adults, but is apparent for juveniles and sub-adults too. Overall, the results confirm False Bay as a critical area for white shark conservation as both sexes, across a range of sizes, frequent the Bay on an annual basis. The finding that female sharks aggregate in the Inshore regions when recreational use peaks highlights the need for ongoing shark-human conflict mitigation strategies. PMID:23383052

Efek Electro Convulsive Therapy (ECT) terhadap Daya Ingat Pasien Skizofrenia di RSJ Prof. HB. Sa’anin Padang

OpenAIRE

Ikky Nabila Nandinanti; Yaslinda Yaunin; Siti Nurhajjah

2015-01-01

Abstrak  ECT merupakan terapi kejang listrik dengan menghantarkan arus listrik pada elektroda dan dipasang pada kepala sehingga menyebabkan konvulsi. ECT terbukti dapat memperbaiki gejala skizofrenia, namun ECT juga memiliki efek samping terutama pada daya ingat. Tujuan  penelitian ini adalah mengetahui efek ECT terhadap daya ingat pasien skizofrenia. Metode : Penelitian ini menggunakan desain analitik dengan jumlah sampel 15 orang penderita skizofrenia di Rumah Sakit Jiwa (RSJ) Prof. HB. Sa’...

Bird surveys at McKinley Bay and Hutchison Bay, Northwest Territories, in 1991

Energy Technology Data Exchange (ETDEWEB)

Cornish, B J; Dickson, D L; Dickson, H L

1992-03-01

McKinley Bay is a shallow protected bay along the eastern Beaufort Sea coast which provides an important habitat for diving ducks. Since 1979, the bay has been the site of a winter harbor and support base for oil and gas exploraton in the Beaufort Sea. Aerial surveys for bird abundance and distribution were conducted in August 1991 as a continuation of long-term monitoring of birds in McKinley Bay and Hutchison Bay, a nearby area used as a control. The main objectives of the 1991 surveys were to expand the set of baseline data on natural annual fluctuations in diving duck numbers, and to determine if numbers of diving ducks had changed since the initial 1981-85 surveys. On the day with the best survey conditions, the population of diving ducks at McKinley bay was estimated at ca 32,000, significantly more than 1981-85. At Hutchison Bay, there were an estimated 11,000 ducks. As in previous years, large numbers of diving ducks were observed off Atkinson Point at the northwest corner of McKinley Bay, at the south end of the bay, and in the northeast corner near a long spit. Most divers in Hutchison Bay were at the west side. Diving ducks, primarily Oldsquaw and scoter, were the most abundant bird group in the study area. Observed distribution patterns of birds are discussed with reference to habitat preferences. 16 refs., 7 figs., 30 tabs.

Analysis and prevention of human failure in nuclear power plants

International Nuclear Information System (INIS)

Liu Xinshuan

2001-01-01

Based on the performances in Daya Bay Nuclear Power Plant and the common experience from the world nuclear industry, the features and usual kinds of human failures in nuclear power plants are highlighted and the prominent factors on the personal, external and decision problems which might cause the human failures are analyzed. Effective preventive measures have been proposed respectively. Some successful human-failure-prevention practices applied in the Daya Bay Nuclear Power Plant are illustrated specifically

The influence of finfish aquaculture on benthic fish and crustacean assemblages in Fitzgerald Bay, South Australia

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Jason E. Tanner

2015-09-01

Full Text Available The influence of sea-cage aquaculture on wildfish assemblages has received little attention outside of Europe. Sea-cage aquaculture of finfish is a major focus in South Australia, and while the main species farmed is southern bluefin tuna (Thunnus maccoyii, there is also an important yellowtail kingfish (Seriola lalandi industry. Yellowtail kingfish aquaculture did not appear to have any local or regional effects on demersal assemblages (primarily fish, but also some crustaceans surveyed by baited remote underwater video (BRUV in Fitzgerald Bay. We did, however, detect small scale spatial variations in assemblages within the bay. The type of bait used strongly influenced the assemblage recorded, with significantly greater numbers of fish attracted to deployments where sardines were used as the bait to compared to those with no bait. The pelleted feed used by the aquaculture industry was just as attractive as sardines at one site, and intermediate between sardines and no bait at the other. There was significant temporal variability in assemblages at both farm sites and one control site, while the second control site was temporally stable (over the 9 weeks of the study. Overall, the results suggested that aquaculture was having little if any impact on the abundance and assemblage structure of the demersal macrofauna in Fitzgerald Bay.

NUMERICAL MODELS AS TOOLS TO UNDERSTAND THE DYNAMICS IN BAYS: CASE OF STUDY CHETUMAL BAY, QUINTANA ROO

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David Avalos-Cueva

2017-07-01

Full Text Available In this study performed the simulation of currents generated by the wind on the Bay of Chetumal, Quintana Roo through the use of a stationary shallow-water model. A homogeneous climatic wind was used for the entire Bay, with a velocity of 3m·s-1 , and directions North, South, Northeast, Northwest, East, Southeast, Southwest and West. The results showed a rather complex dynamics in Chetumal Bay, in which important turns were observed in deep areas, with speeds reaching up to 13 cm·s-1 .

Variability in the air–sea interaction patterns and timescales within the south-eastern Bay of Biscay, as observed by HF radar data

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A. Fontán

2013-04-01

Full Text Available Two high-frequency (HF radar stations were installed on the coast of the south-eastern Bay of Biscay in 2009, providing high spatial and temporal resolution and large spatial coverage of currents in the area for the first time. This has made it possible to quantitatively assess the air–sea interaction patterns and timescales for the period 2009–2010. The analysis was conducted using the Barnett–Preisendorfer approach to canonical correlation analysis (CCA of reanalysis surface winds and HF radar-derived surface currents. The CCA yields two canonical patterns: the first wind–current interaction pattern corresponds to the classical Ekman drift at the sea surface, whilst the second describes an anticyclonic/cyclonic surface circulation. The results obtained demonstrate that local winds play an important role in driving the upper water circulation. The wind–current interaction timescales are mainly related to diurnal breezes and synoptic variability. In particular, the breezes force diurnal currents in waters of the continental shelf and slope of the south-eastern Bay. It is concluded that the breezes may force diurnal currents over considerably wider areas than that covered by the HF radar, considering that the northern and southern continental shelves of the Bay exhibit stronger diurnal than annual wind amplitudes.

KLASTER INDUSTRI SEBAGAI STRATEGI PENINGKATAN DAYA SAING AGROINDUSTRI BIOENERGI BERBASIS KELAPA SAWIT

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Petir Papilo

2016-06-01

Full Text Available Kajian ini bertujuan untuk memberikan gambaran tentang dampak dari pelaksanaan program klaster industri terhadap peningkatan daya saing industri bioenergi berbasis kelapa sawit nasional. Melalui pendekatan analisis perbandingan yang merujuk pada berbagai kajian terdahulu, dapat diketahui bahwa penerapan strategi klaster industri memberikan pengaruh positif terhadap tiga klaster agroindustri kelapa sawit nasional yang berada di Provinsi Riau, Sumatra Utara dan Kalimantan Timur. Berdasarkan penilaian terhadap empat elemen daya saing, seperti aglomerasi perusahaan, nilai tambah dan rantai nilai, jejaring kerjasama serta infrastruktur ekonomi, menunjukkan bahwa telah  terjadi peningkatan nilai daya saing dari ketiga klaster industri sebesar masing-masingnya 0,503, 0294 dan 0,232.       Abstract This study aims to provide an overview of the implementation impact of industrial cluster program to increase the competitiveness of the national agro-industry bioenergy based on palm oil. Through a comparative analysis approach that refers to previous studies, it is known that the implementation of the industrial cluster strategy has a positive influence on the three national oil palm agro-industrial clusters that located in the Riau Province, North Sumatra and East Kalimantan. Based on the assessment of the four elements of competitiveness, such as agglomeration company, value-added and value chains, networks and infrastructure, indicate that there has been an increase in the competitiveness value of the three clusters agro-industries by each 0.503, 0294 and 0.232.

PENGAWASAN DAN PENGENDALIAN PEMANFAATAN SUMBER DAYA AIR UNTUK IRIGASI DI KABUPATEN SLEMAN

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Hery Listyawati

2012-07-01

Full Text Available Supervision and control of utilization of water resources for irrigation in Sleman regency is vital in realizing fair use of water resources. This descriptive-qualitative study finds that preventive-internal supervision has been consistent with those set forth in the working procedures and that repressiveinternal supervision is present in the form of sanctions. The locals enjoy preventive and repressive eksternal supervisionary role, which is manifested in local gatherings and public reporting system. We also find that the government exerts control by licensing, reprimands, advocacy, direction, and conflict resolution mechanisms. Practical problems include the absence of provincial irrigation commission and specific agencies that supervise the enforcement of mediation. Pengawasan dan pengendalian pemanfaatan sumber daya air untuk irigasi di Kabupaten Sleman sangat penting dalam mewujudkan penggunaan sumber daya air yang adil. Hasil penelitian menunjukkan bahwa pengawasan internal-preventif telah sesuai dengan yang dimandatkan oleh tugas pokok dan fungsi dan bahwa pengawasan internal-represif telah dilaksanakan dalam bentuk sanksi. Masyarakat melakukan pengawasan preventif dan represif dalam bentuk sarasehan/musyawarah dan sistem pelaporan. Penelitian ini juga menunjukkan bahwa pemerintah mengendalikan penggunaan sumber daya air dengan menyelenggarakan sistem perizinan, teguran, pembinaan, dan penyelesaian sengketa. Beberapa masalah yang ditemukan di lapangan antara lain adalah tidak adanya komisi irigasi provinsi dan lembaga pengawas khusus yang mengawasi pelaksanaan putusan mediasi.  

DAYA SAING DAN MODEL PEMASARAN SENTRA INDUSTRI USAHA KERAJINAN SANGKAR BURUNG PERKUTUT

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Diah Arum Savitri

2014-09-01

Full Text Available ABSTRACTThe objectives of this study were 1 analyzing the competitiveness, 2 analyzing the market size, 3 analyzing marketing strategies’ priorities and alternatives to improve the competitiveness of industry center of dove cage in Dawuhan Mangli Village, Jember Regency. The method used in this study was descriptive analysis. The analysis tools used in this study were Porter’s Diamond Theory, BCG (Boston Consulting Group, SWOT and AHP (Analytical Hierarchy Process. Competitiveness analysis using diamond theory of Porter showed that industry center of dove cage handicraft in Dawuhan Mangli Village, Jember Regency is still weak. There are 9 components that have weaknesses while other 7 components have strengths. Market growth rate and relative market share formulated on BCG diagram are in the position of Question Marks, which means that the business has the opportunity to grow and expand but needs sufficient cash flow in order to increase its relative market. Based on SWOT and AHP analysis were obtained 7 marketing strategies with their priorities scales including: strengthening the capital, PSBP group formation, education and training, warehouse and workshop building, institutional formation of marketing and raw materials, increasing promotion, improving the quality and diversification of products. To enhance the industrial competitiveness of dove cage industry, development activities through strengthening the marketing and raw materials institution should be done.Keywords: competitiveness, marketing strategy, dove cage ABSTRAKTujuan penelitian ini adalah 1 menganalisis daya saing, 2 menganalisis market size, 3 merumuskan prioritas strategi pemasaran untuk sentra industri usaha kerajinan sangkar burung perkutut di Desa Dawuhan Mangli, Kabupaten Jember. Metode yang digunakan adalah analisis deskriptif. Analisis yang digunakan adalah Porter’s Diamond Theory, analisis BCG (Boston Consulting Group, SWOT, dan AHP (Analytical Hierarchy Process

DAYA SAING EKSPOR TUNA KALENG INDONESIA DI UNI EROPA TAHUN 2003-2013

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Umar Wahono

2017-06-01

Full Text Available Perbedaan tarif yang diberikan antara Indonesia yang lebih tinggi sebesar 20.5% dibandingkan dengan negara pesaing utamanya yang tergabung dalang Africa, Caribbean, Pasific (ACP Countries dengan pelayanan tarif impor hingga 0% ke pasar Uni Eropa (UE. Keadaan ini mampu menyebabkan menghilangnya distorsi perbedaan harga sesungguhnya yang seharusnya menjadi keuntungan lebih atas keunggulan komparatif yang dimiliki. Hal ini mampu melemahkan daya saing komoditi ekspor akibat dampak kenaikan harga terhadap tarif. Penelitian ini bertujuan untuk gambaran daya saing komoditas tuna kaleng Indonesia terhadap negara pesaingnya dipasar UE pada periode 2003-2013. Metode yang digunakan dalam penelitin ini adalah metode Revealed Comparative Advantage (RCA yang kemudian nilai RCA dikomparasikan tiap-tiap negara pengekspor utama tuna kaleng di pasar UE untuk melihat posisi daya saing relatifnya. Sedangkan untuk mendekomposisikan determinan pertumbuhan ekspor tuna kaleng Indonesia ke UE digunankan metode Constant Market Share (CMS. Hasil perhitungan nilai RCA tuna kaleng Indonesia periode 2003-2013 di pasar UE memiliki daya saing dengan rata-rata nilai RCA 4.27. Namun masih dibawah rata-rata nilai RCA negara ACP Countries. Perbedaan pelayanan tarif impor oleh UE untuk komoditas tuna kaleng Indonesia tidak berdampak terhadap penurunan daya saing. The difference between the rates given Indonesia which is higher by 20.5% compared to its main competitor countries that joined the mastermind Africa, Caribbean, Pacific (ACP Countries with service import tariffs to 0% to the European Union (EU. This situation is capable of causing the disappearance of the distortion of the true price difference should be more advantages over comparative advantage. It is capable of undermining the competitiveness of export commodities due to the impact of price increases on tariffs. This study aims to illustrate the competitiveness of commodities Indonesian canned tuna to the EU market of

Peluang dan Tantangan Undang-undang Desa dalam Upaya Demokratisasi Tata Kelola Sumber Daya Alam Desa: Perspektif Agraria Kritis

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Mohamad Shohibuddin

2016-11-01

Full Text Available Undang-undang Nomor 6 Tahun 2014 tentang Desa (UU Desa-terlepas dari terobosan politiknya dalam menggulirkan demokratisasi relasi negara-desa-memiliki keterbatasan mendasar terkait isu sumber daya alam di desa mengingat krisis agraria dan krisis ekologi yang terjadi di pedesaan. Selain tidak banyak mengelaborasi aspek-aspek penting dari isu sumber daya alam, UU Desa juga hanya memberikan kewenangan yang minim terhadap swakelola sumber daya alam desa oleh pemerintah desa serta tidak menyentuh ketimpangan akses warga desa terhadap sumber daya alam setempat. Dihadapkan pada tantangan struktural demikian, perjuangan "otonomi desa" akan sulit mendorong transformasi sosial yang berarti tanpa melibatkan upaya penataan sumber daya alam yang berkeadilan dan berkelanjutan. Pada saat yang sama, perjuangan "keadilan sosial-ekologis" akan sulit tampil sebagai agenda kolektif desa tanpa mengupayakan demokratisasi yang lebih dalam di internal desa sendiri. Tulisan ini menawarkan kerangka perjuangan "demokratisasi tata kelola sumber daya alam desa" sebagai konvergensi strategis dari dua perjuangan sebelumnya: "otonomi desa" dan "keadilan sosial-ekologis". Hal ini diupayakan melalui tiga agenda konkret yang saling terkait: penguatan kewenangan desa atas sumber daya alam setempat, demokratisasi relasi-relasi sosio-agraria di desa, dan pembalikan krisis pedesaan untuk merevitalisasi basis-basis produksi desa.Law Number 6 of 2014 on Village-apart from its political contribution in democratizing state-village relation-has a fundamental limitation on natural resource issues in the village in the light of agrarian and ecological crises. This Law offers a minor elaboration on natural resource issues and provides limited authority to the village on this field, while no reference is made to the problem of inequality in community's access to local natural resources. Confronted with such structural challenges, it is argued that "struggle for village autonomy" will

Analisis Daya Saing untuk Meningkatkan Kualitas Layanan terhadap Pelanggan dengan Pendekatan CRM di CV. BLITZSPOT

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Suryadi Muhammad

2017-04-01

Full Text Available CV. Blitzspot adalah perusahaan yang bergerak di bidang jasa penyediaan layanan internet (internet service provider, yang berkantor pusat di Komplek Padasuka Indah Ruko Blok A-1, Cimahi, Jawa Barat. Berdasarkan hasil wawancara dan hasil observasi pada data transaksi CV. Blitzspot, konsumen CV. Blitzspot yang melakukan transaksi tiap tahunnya selalu berkurang, hal ini dikarenakan konsumen sering membandingkan layanan-layanan yang ditawarkan oleh para pesaing CV. Blitzspot. Bila permasalahan tersebut belum teratasi, konsumen CV. Blitzspot akan menurun tiap tahunnya dan akan selalu berpindah ke pesaing CV. Blitzspot. Direktur Utama CV. Blitzspot ingin menganalisis daya saing untuk menentukan layanan-layanan yang akan diberikan kepada pelanggan CV. Blitzspot dan penentuan strategi untuk mempertahankan konsumen CV. Blitzspot.  Metode Analisis daya saing yang digunakan adalah Model Analisis Berlian Porter dan Metode Pengelompokkan Pelanggan yang digunakan adalah Metode LRFM. Berdasarkan hasil pengujian dan pembahasan yang telah dibuat, maka dapat ditarik kesimpulan bahwa Direktur Utama dapat menganalisis daya saing CV. Blitzspot dengan menggunakan Berlian Porter untuk meningkatkan kualitas layanan terhadap pelanggan CV. Blitzspot.

STRATEGI PENINGKATAN DAYA SAING RUMAH POTONG AYAM PT XYZ

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Arli Arli

2012-07-01

chicken-based food company in Indonesia.Keywords:  competitiveness, global value chain, poultry slaughterhouse, PT XYZABSTRAKTujuan penelitian ini adalah (1 menganalisis peran aktor-aktor di dalam rantai nilai Rumah Potong Ayam (RPA PT XYZ  yang berpengaruh terhadap daya saingnya, (2 menganalisis para pemain kunci dalam stakeholders RPA PT XYZ , (3 menganalisis faktor-faktor internal dan eksternal (IE yang berpengaruh terhadap daya saing RPA PT XYZ , (4 memformulasikan tujuan dan sasaran jangka panjang strategik untuk meningkatkan daya saing RPA PT XYZ , (5 menganalisis alternatif dan prioritas strategi untuk meningkatkan daya saing RPA PT XYZ . Metode yang digunakan adalah analisis deskriptif. Analisis yang digunakan adalah global value chain, analisis stakeholder, internal factor evaluation, external factor evaluation, matriks IE, SWOT, dan quantitative strategic planning matrix. Hasil dari analisis global value chain, analisis stakeholders, analisis internal dan eksternal, dan visi-misi perusahaan, tujuan jangka panjang adalah (a menyediakan nilai tambah bagi pelanggan, (b memaksimalkan laba dari hasil operasi bisnis, (c meningkatkan kesejahteraan stakeholders, (d melakukan kegiatan sustainable business. Hasil matriks IE dan analisis SWOT, strategi untuk mencapai sasaran dan tujuan jangka panjang strategik adalah (a meningkatkan efektivitas dan efisiensi manajemen rantai pasok; (b mengimplementasikan evaluasi kinerja untuk pegawai dan partner bisnis; (c memperkuat  citra sebagai perusahaan domestik penghasil makanan olahan berbasis daging ayam berkualitas tinggi di Indonesia; (d meningkatkan kegiatan penelitian dan pengembangan; (e membangun aliansi strategik dengan pemasok ayam hidup eksternal; (f melakukan sosialisasi mengenai pentingnya konsumsi protein hewani kepada masyarakat Indonesia. Tiga strategi prioritas dari analisis QSPM adalah meningkatkan efektivitas dan efisiensi rantai pasok, mengimplementasikan evaluasi kinerja untuk pegawai dan partner bisnis, dan

Macrobioerosion in Porites corals in subtropical northern South China Sea: a limiting factor for high-latitude reef framework development

Science.gov (United States)

Chen, Tianran; Li, Shu; Yu, Kefu

2013-03-01

Bioerosion is an important limiting factor in carbonate accretion and reef framework development; however, few studies have quantified the direct impact of macroborers on high-latitude coral communities, which are viewed as potential refuge during a period of global warming. In this study, internal macrobioerosion of Porites corals was examined at Daya Bay, subtropical northern South China Sea. The principal borers were the bivalve Lithophaga spp. and the sponges Cliona spp. and Cliothosa spp. (≥80 %), while sipunculid and polychaete worms and barnacles accounted for small amounts of bioerosion (≤20 %). Porites corals were heavily bioeroded in areas impacted by aquacultural and urban activities (10.34-27.55 %) compared with corals in relatively unpolluted areas (2.18-6.76 %). High levels of bioerosion, especially boring bivalve infestation, significantly weaken the corals and increase their susceptibility to dislodgement and fragmentation in typhoons, limiting accumulation of limestone framework. This study implies that carbonate accretion and reef development for high-latitude coral communities may be limited in future high-CO2 and eutrophication-stressed environments.

Efek Electro Convulsive Therapy (ECT terhadap Daya Ingat Pasien Skizofrenia di RSJ Prof. HB. Sa’anin Padang

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Ikky Nabila Nandinanti

2015-09-01

Full Text Available Abstrak  ECT merupakan terapi kejang listrik dengan menghantarkan arus listrik pada elektroda dan dipasang pada kepala sehingga menyebabkan konvulsi. ECT terbukti dapat memperbaiki gejala skizofrenia, namun ECT juga memiliki efek samping terutama pada daya ingat. Tujuan  penelitian ini adalah mengetahui efek ECT terhadap daya ingat pasien skizofrenia. Metode : Penelitian ini menggunakan desain analitik dengan jumlah sampel 15 orang penderita skizofrenia di Rumah Sakit Jiwa (RSJ Prof. HB. Sa’anin Padang dengan teknik pengambilan consecutive sampling.Pemeriksaan daya ingat menggunakan Tes Memori Indonesia, dilakukan sehari sebelum ECT dan 2 jam sesudah ECT. Analisis data dengan uji T berpasangan. Gangguan daya ingat sebelum ECT terjadi pada 90% sampel dengan terganggu sedang pada kemampuan immediate memory, terganggu ringan pada kemampuan recent memory, dan terganggu berat pada remote memory. Gangguan daya ingat sesudah ECT terjadi pada seluruh sampel (100% dengan terganggu sedang pada immediate memory, terganggu berat pada recent memory, dan terganggu berat padaremote memory. Uji hipotesis pada nilai kemampuan immediate dan recent memory menghasilkan nilai p 0,018 dan 0,031 (p < 0,05, berarti Ho ditolak, sedangkan nilai p remote memory 0,678 (p > 0,05, berarti Ho diterima. Kesimpulan adalah perbedaan daya ingat immediate dan recent memory pada pasien skizofrenia sebelum dan sesudah ECT, sedangkan kemampuan remote memory tidak mengalami perubahan.Kata kunci: skizofrenia, ECT, daya ingat Abstract ECT is an electric convulsive therapy by delivering electrical current to electrodes and mounted on the head causing convulsions. ECT shown to improve schizophrenia symptoms, but ECT also has side effects especially on memory. The objective of this study was to determine the effects of ECT on memory schizophrenic patients. Current study was conducted with analytic design with sample size was 15 schizophrenia people at RSJ Prof. HB. Sa'anin Padang

Daya Hambat Ekstrak Aloe Vera terhadap pertumbuhan Staphylococcus Aureus

OpenAIRE

Rahmat, drg.Sp,Pros

2011-01-01

Dari hasil penelitian , maka dapat disimpulkan bahwa ekstrak Aloe Vera dapat menghambat pertumbuhan bakteri Stafhylococcus aureus, dan kadar hambat minimal ekstrak Aloe Vera adalah pada konsentrasi 25%. Tujuan Penelitan Ini adalah untuk mengetahui efektifitas ekstrak Aloe vera dalam menghambat pertumbuhan bakteri Stafhylococcus aureus dan daya hambat menimal, (DHM) terhadap pertumbuhan bakteri tersebut. Metode yang digunakan adalah pertumbuhan ekstrak Aloe vera, penegnceran ekstrak , pemur...

Diachronic Change within the Still Bay at Blombos Cave, South Africa.

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Will Archer

Full Text Available Characteristically shaped bifacial points are stone artefacts with which the Middle Stone Age Still Bay techno-complex in Southern Africa is identified. Traditional approaches such as chaîne opératoire and two-dimensional metrics in combination with attribute analyses have been used to analyse variability within Still Bay point assemblages. Here we develop a protocol to extract and analyse high resolution 3-dimensional geometric morphometric information about Still Bay point morphology. We also investigate ways in which the independent variables of time, raw-material and tool size may be driving patterns of shape variation in the Blombos Cave point assemblage. We demonstrate that at a single, stratified Still Bay site points undergo significant modal changes in tool morphology and standardization. Our results caution against (1 treatment of the Still Bay as a static technological entity and (2 drawing demographic inferences stemming from grouping Still Bay point collections within the same cultural label.

Geochemical of trace elements in volcanics rocks Peninsula Fildes, Fildes Bay Rey Jorge island, south Shetland

International Nuclear Information System (INIS)

Masquelin, H.; Vaz Chavez, N.

1987-01-01

The authors present some geochemical data derived from the multielement analysis of three different types of volcanic rocks collected around Fildes Bay on King George Island, South Shetland. Volcanic rocks from Fildes Peninsula Group may be distinguished from those Marian Cove by their hydrothermal alteration. Apparently the correlation between NI ands Cr allows for the observation of the stratigraphic separation of samples of the same kind. Consequently, the correlation between Cu and As show a distinction between Marian Cove propylitised tuffites and both Brecciated Andesites and pyroclastic rock from Fildes Peninsula Group.

PENGARUH PEMBERIAN EKSTRAK BAWANG PUTIH (Allium sativum L. DAN LAMA PENYIMPANAN TERHADAP DAYA AWET TAHU PUTIH

Directory of Open Access Journals (Sweden)

Hendra Hendra

2017-08-01

Full Text Available Tahu termasuk bahan pangan yang cepat mengalami kerusakan sehingga dapat digolongkan ke dalam golongan high perishable food. Komposisi tahu yang banyak mengandung protein dan air menyebabkan tahu merupakan media yang cocok untuk tumbuhnya mikroba sehingga tahu menjadi cepat mengalami kerusakan. Bawang putih (Allium sativum L juga bersifat antimikroba E.coli, Shigella sonnei, Staphylococcus sureus dan Aerobacter aerogenes. Manfaat lainya adalah dapat mengurangi jumlah bakteri aerob, kaliform dan mikroorganisme lainnya sehingga bahan makanan yang ditambahkan bawang putih akan lebih awet. Rumusan masalah apakah ekstrak bawang putih berpengaruh terhadap lamanya penyimpanan tahu putih? Tujuan Penelitian untuk mengetahui pengaruh ekstrak bawang putih (Allium sativum L. terhadap daya awet Tahu putih. Hipotesis Penelitian ini adalah, diduga ada pengaruh pemberian konsentrasi ekstrak bawang putih (Allium sativum L. terhadap daya awet tahu putih. Penelitian ini menggunakan metode eksperimen dengan pola Rancangan Acak Lengkap (RAL yang terdiri dari 6 perlakuan dan 4 ulangan. Berdasarkan analisis Varian menunjukkan bahwa signifikansi taraf signifikan pada Tabel 1 F hitung perlakuan lebih besar dari F tabel 0,05 dan F tabel 0,01 yaitu 2,93 4,58 artinya pemberian ekstrak kulit bawang putih (Allium sativum L. memberikan pengaruh sangat nyata terhadap daya awet tahu putih. Berdasarkan rata-rata jumlah mikroorganisme yang ada pada tahu putih, maka di ketahui bahwa konsentrasi Perlakuan P1 (80 gr ekstrak bawang putih (Allium sativum L. dengan masa simpan 1 x 24 jam berpengaruh sangat nyata terhadap daya awet  tahu putih.

77 FR 43514 - Anchorage Regulations; Narragansett Bay and Rhode Island Sound, RI

Science.gov (United States)

2012-07-25

...-AA01 Anchorage Regulations; Narragansett Bay and Rhode Island Sound, RI AGENCY: Coast Guard, DHS... Narragansett Bay, Rhode Island, and adding an offshore anchorage in Rhode Island Sound south of Brenton Point... rulemaking (NPRM) entitled ``Anchorage Regulations; Narragansett Bay and Rhode Island Sound, RI,'' in the...

Sumber Daya Kesehatan dalam Penyusunan Perencanaan Dinas Kesehatan Kabupaten Padang Pariaman

Directory of Open Access Journals (Sweden)

Jasrida Yunita

2011-05-01

Full Text Available Perencanaan merupakan inti kegiatan manajemen, karena semua kegiatan manajemen diatur dan diarahkan oleh perencanaan tersebut. Kurang sempurnanya usulan perencanaan bisa disebabkan oleh kekurangan dibagian sumber daya seperti kebijakan, tenaga, dana, sarana prasarana, serta data dan informasi. Dalam dua tahun terakhir di Dinas Kesehatan Kabupaten Padang Pariaman terjadi kecenderungan penurunan capaian indikator program kesehatan. Hal ini salah satunya disebabkan oleh kurang sempurnanya perencanaan program dan kegiatan yang direncanakan setiap tahunnya. Tujuan penelitian diketahuinya sumber daya kesehatan dalam penyusunan perencanaan Dinas Kesehatan Kabupaten Padang Pariaman. Metode penelitian menggunakan pendekatan kualitatif dengan teknik wawancara mendalam dengan 12 orang informan. Hasil penelitian menyatakan pelaksanaaan penyusunan perencanaan telah mengikuti kebijakan yang sesuai dengan ketentuan dan perundangan yang berlaku, kualitas tenaga perencana dan data yang masih kurang, sarana dan prasarana yang cukup memadai tapi masih kurang dalam hal pemeliharaan serta dana yang sudah tersedia. Agar perencanaan berkualitas, maka perlu pelatihan tenaga perencana, penempatan tenaga sesuai keahliannya dan membentuk tim khusus dalam pengolahan data.

PEMBATASAN HAK MENGUASAI NEGARA OLEH MASYARAKAT ADAT DALAM PENGELOLAAN SUMBER DAYA AIR

Directory of Open Access Journals (Sweden)

Diah Pawestri Maharani

2016-04-01

peoples Abstrak Air merupakan kebutuhan pokok seluruh makhluk hidup di dunia. Di satu sisi, ketersediaan air yang secara potensial dapat dimanfaatkan manusia, secara kualitas cenderung menurun. Sedangkan kebutuhan manusia akan air sebagai komoditas ekonomi selalu mengalami peningkatan dari waktu ke waktu. Ketidakseimbangan antara ketersediaan dan kebutuhan air inilah kemudian rentan menimbulkan konflik. Konflik sumber daya air tidak hanya terjadi dalam antara masyarakat dengan masyarakat, masyarakat dengan Investor, namun juga antara Masyarakat dengan Negara. Dalam tulisan ini penulis ingin menyoroti tentang kewenangan Negara dalam melakukan pengelolaan sumber daya air termasuk dalam hal menentukan kebijakan-kebijakannya. Kewenangan Negara ini bersumber pada amanat konstitusi UUD 1945 khususnya pasal 33 ayat (3 yang berbunyi: “Bumi dan air, dan kekayaan alam yang terkandung didalamnya dikuasai oleh Negara dan dipergunakan untuk sebesar-besar kemakmuran rakyat”. Pasal tersebut melahirkan konsep dasar Hak Menguasai sumber daya air oleh Negara. Tetapi, sangat dimungkinkan politik hukum yang ditetapkan oleh Pemerintah justru merampas hak ulayat dan hak-hak dasar masyarakat adat yang seyogianya dapat menikmati sumber daya air tersebut. Dalam regulasi lain yaitu UU Nomor 6 Tahun 2014 tentang Desa, Pasal 103 huruf b mengatur kewenangan Desa Adat berdasarkan hak asal-usul yang dimiliki oleh Desa Adat, termasuk pengaturan dan pengurusan ulayat atau wilayah adat mereka. Dalam tulisan ini penulis akan menguraikan pembatasan kewenangan Negara jika dihadapkan pada kewenangan masyarakat adat atas satu objek yang sama yaitu air dalam wilayah adat di Indonesia. Tulisan ini disusun dengan menggunakan metode penulisan yuridis normatif dengan pendekatan konseptual dan analisis. Kata kunci:  sumber daya air, pengelolaan sumber daya air, hak menguasai negara, masyarakat adat

OPTIMASI DAYA MESIN DAN KONSUMSI BAHAN BAKAR MESIN TOYOTA SERI 5K MELALUI PENGGUNAAN PENGAPIAN BOOSTER

Directory of Open Access Journals (Sweden)

Mardani Ali Sera

2015-10-01

Full Text Available Proses pembakaran adalah proses secara fisik yang terjadi di dalam silinder. Proses pembakaran dimulai pada saat busi memercikkan bunga api hingga terjadi proses pembakaran. Dalam penelitian ini digunakan metode eksperimen yaitu membandingkan daya dan konsumsi bahan bakar antara pengapian standar dengan pengapian menggunakan booster. Berdasarkan data hasil uji coba perbandingan antara sistem pengapian standar dengan pengapian yang menggunakan booster dengan objek penelitian mesin Toyota seri 5K diketahui adanya kenaikan 2.61% daya menjadi 27.723 kW dari 27.17 kW antara sistem pengapian standar dengan pengapian yang menggunakan booster pada putaran mesin 2400 rpm. Sedangkan prosentase kenaikan rerata daya sebesar 2.79 %. Penggunaan booster juga membuat penggunaan konsumsi bahan bakar spesifik (sfc antara sistem pengapian standar dengan pengapian yang menggunakan booster. Prosentase penurunan rerata konsumsi bahan bakar spesifik (sfc sebesar 6.99%. Pada sistem pengapian yang menggunakan booster, sfc minimum sebesar 0.219 kg/kWh pada putaran mesin 2200 rpm. Pada pengapian standar sfc minimum sebesar 0.231 kg/kWh pada putaran mesin 2400 rpm.

Is the biological productivity in the Bay of Bengal light limited?

Digital Repository Service at National Institute of Oceanography (India)

PrasannaKumar, S.; Narvekar, J.; Nuncio, M.; Kumar, A.; Ramaiah, N.; Sardessai, S.; Gauns, M.; Fernandes, V.; Paul, J.

Recent measurements of chlorophyll, primary productivity (PP) and nutrients along the central Bay of Bengal (BOB) during summer, fall and spring intermonsoons showed that the northern bay becomes less productive compared to the south in summer...

Quality assurance system for conventional island erection of Daya Day Nuclear Power Plant

Energy Technology Data Exchange (ETDEWEB)

Zhongliang, Shi; Suozhi, Wu; Xiangke, Meng [Shandong Electric Power Construction Corp. Nuclear Power Construction Company (China)

1994-12-01

The process concerning the establishment, operation and perfection of Quality Assurance System (QA system) experienced by Shandong Electric Power Construction Corporation, Nuclear Power Construction Company (SEPC-NPCC) during the implementation of Conventional Island Erection (CIE) in Daya Bay Nuclear Power Plant is introduced. Apart from systematic description of the principle for working out QA programme and QA procedures and their main contents, it is also detailed, on a combination of theory with practice basis, how the major departments constituting the QA system such as Quality Assurance, Quality Control, Construction and Administration and Business Departments have made fruitful efforts as per the individual responsibility for ensuring the work quality and having in mind the principles specified by QA programme and the requirements of QA procedures. As a result of the reasonable combination of the 3 crucial points and the 4 essential elements of the QA system, high quality of CI erection has been realized. The importance of quality supervision and management review by the owner and upper levels of authorities for ensuring effective operation of QA system is affirmed. The practical experience of CIE project proves that the strict inspection/surveillance on all activities and service affecting quality carried out by QA Department independent of project management and QC Dept, independent of construction management are of quite importance for ensuring the project quality. (4 tabs.).

Quality assurance system for conventional island erection of Daya Day Nuclear Power Plant

International Nuclear Information System (INIS)

Shi Zhongliang; Wu Suozhi; Meng Xiangke

1994-12-01

The process concerning the establishment, operation and perfection of Quality Assurance System (QA system) experienced by Shandong Electric Power Construction Corporation, Nuclear Power Construction Company (SEPC-NPCC) during the implementation of Conventional Island Erection (CIE) in Daya Bay Nuclear Power Plant is introduced. Apart from systematic description of the principle for working out QA programme and QA procedures and their main contents, it is also detailed, on a combination of theory with practice basis, how the major departments constituting the QA system such as Quality Assurance, Quality Control, Construction and Administration and Business Departments have made fruitful efforts as per the individual responsibility for ensuring the work quality and having in mind the principles specified by QA programme and the requirements of QA procedures. As a result of the reasonable combination of the 3 crucial points and the 4 essential elements of the QA system, high quality of CI erection has been realized. The importance of quality supervision and management review by the owner and upper levels of authorities for ensuring effective operation of QA system is affirmed. The practical experience of CIE project proves that the strict inspection/surveillance on all activities and service affecting quality carried out by QA Department independent of project management and QC Dept, independent of construction management are of quite importance for ensuring the project quality. (4 tabs.)

Petroleum Hydrocarbon Profiles of Water and Sediment of Algoa Bay, Eastern Cape, South Africa

Directory of Open Access Journals (Sweden)

Abiodun O. Adeniji

2017-10-01

Full Text Available Petroleum hydrocarbon profiles of water and sediment samples of Algoa Bay in the Eastern Cape Province of South Africa were assessed using standard analytical procedures. Water (from surface and bottom levels and sediment samples were collected from five locations in the bay from February to June 2016. Extraction of the petroleum hydrocarbons from the water and sediment samples collected was achieved using liquid-liquid and Soxhlet extraction techniques, respectively, followed by column clean up. Target compounds were analytically determined with gas chromatography–flame ionization detector (GC-FID and quantified by integrating the areas of both the resolved and unresolved components. Physicochemical properties of the water samples were also determined on site using a SeaBird 19plusV2 CTD SBE 55 device. Estimated limit of detection, limit of quantitation and relative standard deviation for the 35 n-alkane standards ranged from 0.06 to 0.13 μg/L, 0.30 to 0.69 μg/L and 3.61 to 8.32%, respectively. Results showed that total petroleum hydrocarbon (TPH varied from 45.07 to 307 μg/L in the water and 0.72 to 27.03 mg/kg in the sediments. The mean concentrations of TPH in both the water and sediment samples from Algoa Bay revealed a slight level of pollution. The diagnostic indices used showed that the hydrocarbons in the area were from both biogenic and anthropogenic sources. Hence, there is need for adequate regulation and control of all activities contributing to the levels of petroleum hydrocarbon in the marine environment for the safety of human, aquatic and wild lives in the area.

Petroleum Hydrocarbon Profiles of Water and Sediment of Algoa Bay, Eastern Cape, South Africa.

Science.gov (United States)

Adeniji, Abiodun O; Okoh, Omobola O; Okoh, Anthony I

2017-10-20

Petroleum hydrocarbon profiles of water and sediment samples of Algoa Bay in the Eastern Cape Province of South Africa were assessed using standard analytical procedures. Water (from surface and bottom levels) and sediment samples were collected from five locations in the bay from February to June 2016. Extraction of the petroleum hydrocarbons from the water and sediment samples collected was achieved using liquid-liquid and Soxhlet extraction techniques, respectively, followed by column clean up. Target compounds were analytically determined with gas chromatography-flame ionization detector (GC-FID) and quantified by integrating the areas of both the resolved and unresolved components. Physicochemical properties of the water samples were also determined on site using a SeaBird 19plusV2 CTD SBE 55 device. Estimated limit of detection, limit of quantitation and relative standard deviation for the 35 n -alkane standards ranged from 0.06 to 0.13 μg/L, 0.30 to 0.69 μg/L and 3.61 to 8.32%, respectively. Results showed that total petroleum hydrocarbon (TPH) varied from 45.07 to 307 μg/L in the water and 0.72 to 27.03 mg/kg in the sediments. The mean concentrations of TPH in both the water and sediment samples from Algoa Bay revealed a slight level of pollution. The diagnostic indices used showed that the hydrocarbons in the area were from both biogenic and anthropogenic sources. Hence, there is need for adequate regulation and control of all activities contributing to the levels of petroleum hydrocarbon in the marine environment for the safety of human, aquatic and wild lives in the area.

STRATEGI PENINGKATAN DAYA SAING INDUSTRI FURNITURE ROTAN INDONESIA DI KAWASAN ASEAN DAN TIONGKOK

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Rudi Eko Setyawan

2016-11-01

ekonomi suatu negara. Penelitian ini bertujuan untuk menganalisis daya saing furniture rotan Indonesia di kawasan ASEAN Tiongkok serta faktor-faktor yang memengaruhinya dan kemudian menyimpulkan strategi yang tepat untuk meningkatkan daya saingnya. Analisis dilakukan dengan menggunakan Diamond’s Porter, Normalized Revealed Comparative Advantage (NRCA dan regresi data panel. Hasil penelitian menunjukkan bahwa daya saing furniture rotan Indonesia di kawasan ASEAN dan Tiongkok dalam kurun waktu 2001 hingga 2014 berfluktuasi dan sebenarnya masih mempunyai daya saing meskipun kecil, hal ini dapat dilihat dari semua nilai indeks NRCA nilainya positif. Pada Fixed Effect Model (FEM, variabel independen yang berpengaruh signifikan terhadap NRCA adalah harga ekspor, volume ekspor, harga furniture rotan dunia, harga rotan mentah dunia, jumlah perusahaan industri rotan di Indonesia, produksi rotan riil di Indonesia, nilai produksi rotan di Indonesia, investasi industri rotan di Indonesia, tenaga kerja langsung industri rotan, besarnya suku bunga pinjaman Bank, pemberlakuan ACFTA dan kebijakan pelarangan ekspor rotan mentah maupun setengah jadi. Untuk mampu meningkatkan daya saing furniture rotan Indonesia, pemerintah harus mendirikan pusat pengembangan atau pelatihan dan pengembangan desain yang inovatif maupun standart mutu furniture rotan Indonesia. Hal ini juga didukung dengan adanya jaminan ketersediaan bahan baku rotan dan peningkatan teknologi industri pengolahan rotan. Hal ketiga yang perlu dilakukan adalah perbaikan infrastruktur maupun rantai distribusi, perbaikan sistem informasi pasar rotan serta penguatan brand image furniture rotan Indonesia.Kata Kunci: daya saing furniture rotan, diamond’s porter, normalized revealed comparative advantage, fixed effect model

STRATEGI PENGELOLAAN SUMBER DAYA UDANG LAUT DALAM SECARA BERKELANJUTAN DI INDONESIA

Directory of Open Access Journals (Sweden)

Ali Suman

2013-05-01

Full Text Available Pemanfaatan sumber daya udang di Indonesia dilakukan pada wilayah perairan laut dangkal dan status pengusahaannya sudah dalam tahapan jenuh (over-fishing. Apabila kondisi ini dibiarkan dalam jangka panjang tanpa adanya usaha pengelolaan yang berkelanjutan, maka akan menyebabkan kelestarian sumber daya udang akan terancam dan bahkan bisa punah. Salah satu hal yang harus dilakukan dalam mengantisipasinya adalah mencari daerah penangkapan baru di perairan laut dalam, berupa sumber daya udang yang potensial dan belum pernah dimanfaatkan (untapped resources. Komposisi jenis udang laut dalam di perairan Indonesia lebih dari sekitar 38 jenis dengan jenis udang yang mendominasi adalah Plesiopenaeus edwardsianus dan Aristeus virilis serta alat tangkap yang disarankan untuk pemanfaatannya adalah bubu laut dalam tipe silinder. Potensi penangkapan udang laut dalam di Kawasan Barat Indonesia (KBI sebagai 640 ton per tahun dan di Kawasan Timur Indonesia (KTI sebagai 2.840 ton per tahun. Agar pengelolaan sumber daya udang laut dalam dapat dilakukan berkelanjutan, maka harus dikelola dari awal pemanfaatannya. Strategi pengelolaan yang harus dilakukan adalah membatasi upaya penangkapan pada tingkat upaya sekitar 285 armada bubu laut dalam di KBI dan sekitar 1.250 armada bubu laut dalam di KTI. Selain itu harus dilakukan penutupan musim dan daerah penangkapan serta dilakukan penetapan kuota penangkapan. The utilization of Indonesia’s shrimps resources are commonly taking from shallow marine water while its status is currently on overfishing stage. In the long run without appropriate management will threat its sutainability and may be worsen to become extinct. A possible anticipition is finding a new fishing ground at deep sea area for potential deep sea shrimps as untapped resource. Deep sea shrimps species composition have been identified for more than 38 species with mainly dominated by Plesiopenaeus edwardsianus and Aristeus virili. Recommended fihing gear

110mAg root and foliar uptake in vegetables and its migration in soil

International Nuclear Information System (INIS)

Shang, Z.R.; Leung, J.K.C.

2003-01-01

110m Ag, as a radionuclide of corrosion products in water-cooled nuclear reactors, was detected in the liquid effluents of Guangdong Daya Bay Nuclear Power Station (GNPS) of Daya Bay under normal operation conditions. Experiments on a simulated terrestrial agricultural ecosystem were carried out using the pot experiment approach. The most common plants in Hong Kong and the South China vegetable gardens such as lettuce, Chinese spinach, kale, carrot, pepper, eggplant, bean, flowering cabbage, celery, European onion and cucumber were selected for 110m Ag root and foliar uptake tests. The results show that carrot, kale and flowering cabbage have the greatest values of soil to plant transfer factor among the vegetables, while 110m Ag can be transferred to Chinese spinach via foliar uptake. Flowering cabbage, the most popular leafy vegetable locally, could be used as a biomonitor for the radioisotope contamination in vegetables. Soil column and adsorption tests were also carried out to study the leaching ability and distributio coefficient (K d ) of 110m Ag in the soil. The results show that most of the radionuclide was adsorbed in the top 1 cm of soil regardless of the pH value. The K d was also determined

Occurrence of halogenated flame retardants in sediment off an urbanized coastal zone: association with urbanization and industrialization.

Science.gov (United States)

Liu, Hui-Hui; Hu, Yuan-Jie; Luo, Pei; Bao, Lian-Jun; Qiu, Jian-Wen; Leung, Kenneth M Y; Zeng, Eddy Y

2014-01-01

To examine the impacts of urbanization and industrialization on the coastal environment, sediment samples were collected from an urbanized coastal zone (i.e., Daya Bay and Hong Kong waters of South China) and analyzed for 20 polybrominated diphenyl ethers (PBDEs) and 10 alternative halogenated flame retardants (AHFRs). The sum concentration of PBDEs was in the range of 1.7-55 (mean: 17) ng g(-1), suggesting a moderate pollution level compared to the global range. The higher fractions of AHFRs (i.e., TBB+TBPH, BTBPE and DBDPE) than those of legacy PBDEs (i.e., penta-BDE, octa-BDE and deca-BDE) corresponded with the phasing out of PBDEs and increasing demand for AHFRs. Heavy contamination occurred at the estuary of Dan'ao River flowing through the Daya Bay Economic Zone, home to a variety of petrochemicals and electronics manufacturing facilities. The concentrations of HFRs in surface sediments of Hong Kong were the highest in Victoria Harbor, which receives around 1.4 million tons of primarily treated sewage daily, and a good relationship (r(2) = 0.80; p 0.73; p < 0.05) with the production volume of electronic devices, production value of electronic industries and population size, demonstrating the importance of industrializing and urbanizing processes in dictating the historical input patterns of AHFRs.

{sup 110m}Ag root and foliar uptake in vegetables and its migration in soil

Energy Technology Data Exchange (ETDEWEB)

Shang, Z.R.; Leung, J.K.C. E-mail: jkcleung@hku.hk

2003-07-01

{sup 110m}Ag, as a radionuclide of corrosion products in water-cooled nuclear reactors, was detected in the liquid effluents of Guangdong Daya Bay Nuclear Power Station (GNPS) of Daya Bay under normal operation conditions. Experiments on a simulated terrestrial agricultural ecosystem were carried out using the pot experiment approach. The most common plants in Hong Kong and the South China vegetable gardens such as lettuce, Chinese spinach, kale, carrot, pepper, eggplant, bean, flowering cabbage, celery, European onion and cucumber were selected for {sup 110m}Ag root and foliar uptake tests. The results show that carrot, kale and flowering cabbage have the greatest values of soil to plant transfer factor among the vegetables, while{sup 110m}Ag can be transferred to Chinese spinach via foliar uptake. Flowering cabbage, the most popular leafy vegetable locally, could be used as a biomonitor for the radioisotope contamination in vegetables. Soil column and adsorption tests were also carried out to study the leaching ability and distributio coefficient (K{sub d}) of {sup 110m}Ag in the soil. The results show that most of the radionuclide was adsorbed in the top 1 cm of soil regardless of the pH value. The K{sub d} was also determined.

Geologic framework studies of South Carolina's Long Bay from Little River Inlet to Winyah Bay, 1999-2003: geospatial data release

Science.gov (United States)

Baldwin, W.E.; Denny, J.F.; Schwab, W.C.; Gayes, P.T.; Morton, R.; Driscoll, N.W.

2007-01-01

offshore of the northern South Carolina coast. The digital data presented herein accompany USGS Open-File Reports OFR 2004-1013 and OFR 2005-1345, describing the stratigraphic framework and modern sediment distribution within Long Bay, respectively. Direct on-line links to these publications are available within 'References' on the navigation bar to the left. Additional links to other publications and web sites are also available.

Responses of upland herpetofauna to the restoration of Carolina Bays and thinning of forested Bay Margins.

Energy Technology Data Exchange (ETDEWEB)

Ledvina, Joseph A.

2008-05-01

Research on the effects of wetland restoration on reptiles and amphibians is becoming more common, but almost all of these studies have observed the colonization of recently disturbed habitats that were completely dry at the time of restoration. In a similar manner, investigations herpetofaunal responses to forest management have focused on clearcuts, and less intensive stand manipulations are not as well studied. To evaluate community and population responses of reptiles and amphibians to hydrology restoration and canopy removal in the interior of previously degraded Carolina bays, I monitored herpetofauna in the uplands adjacent to six historically degraded Carolina bays at the Savannah River Site (SRS) in South Carolina for four years after restoration. To evaluate the effects of forest thinning on upland herpetofauna, forests were thinned in the margins of three of these bays. I used repeated measures ANOVA to compare species richness and diversity and the abundance of selected species and guilds between these bays and with those at three reference bays that were not historically drained and three control bays that remained degraded. I also used Non-metric Multidimensional Scaling (NMDS) to look for community-level patterns based treatments.

ANALISIS DAYA SAING EKSPOR SEKTOR UNGGULAN DI JAWA TENGAH

Directory of Open Access Journals (Sweden)

Wiwit Santi Wahyuningsih

2017-06-01

Full Text Available Penelitian ini bertujuan untuk mengidentifikasi industri unggulan yang ada di Jawa Tengah, dan kemudian industri unggulan tersebut diidentifikasi mana saja yang mempunyai daya saing ekspor. Penelitian ini menggunakan data PDRB Jawa Tengah dan PDB Tahun 2010-2015, Tabel Input Output Jawa Tengah Tahun 2013, serta data Ekspor-Impor Jawa Tengah Tahun 1997-2015. Data tersebut diperoleh dari data sekunder, yaitu dengan memanfaatkan data yang telah tersedia pada instansi terkait. Penelitian ini mengunakan alat analisis Indeks Daya Penyebaran (IDP, Indeks Derajat Kepekaan (IDK dan Revealed Comparative Advantage (RCA. Dari hasil IDP dan IDK terdapat 9 industri unggulan di Jawa Tengah yaitu industri pengolahan dan pengawetan ikan, industri minyak dan lemak, industri penggilingan padi, industri tepung terigu dan tepung lainnya, industri makanan ternak, industri pemintalan, industri tekstil, industri kayu dan bahan bangunan dari kayu, serta industri karet dan barang dari karet. Tetapi dari 9 industri unggulan tersebut yang memiliki daya saing ekspor tinggi hanya ada 3 industri yaitu industri dengan IDP>1, IDK>1 dan RCA>1 yang meliputi industri pemintalan, industri tekstil, dan industri kayu dan bahan bangunan dari kayu. Dari penelitian ini dapat disimpulkan bahwa sektor industri yang dapat diandalkan untuk meningkatkan pertumbuhan ekonomi melalui ekspor dan memiliki daya saing ekspor yang sangat bagus serta memilki harga jual tinggi yaitu hanya industri pemintalan, industri tekstil, dan industri kayu dan bahan bangunan dari kayu. Maka dari itu sebaiknya kebijakan pemerintah lebih ditekankan pada sektor hulu dan sektor hilir dari industri-industri tersebut. This research’s aim is to identify the leading manufactures in central Java then identify which of those industries have the export competitiveness. This study used data of Central Java’s Gross Domestic Regional Product (GDRP and Gross National Product (GNP on 2010-2015, Input Output Table on 2013, as

3D digital dynamic management of maintenance projects for nuclear power plant

International Nuclear Information System (INIS)

Wang Baizhong; Luo Yalin; Fang Hao; Ma Li; Zhang Jie; Wang Ruobing; Xie Min

2005-01-01

The whole process for the application of digital plant technique in the equipment transport in reactor building and the dynamic management of the spatial arrangement in Daya Bay Nuclear Power Station was introduced in the paper. The establishment of 3D digital Daya Bay plant, and the method and procedure to apply it in the nuclear power plant maintenance project have been discussed. This project utilizes the outer database to preserve the maintenance status of equipments, and avoids the damage or changing of the original 3D final model. Based on the maintenance procedure, the spatial arrangement and schedule for the maintenance of nuclear power station have been simulated and optimized for the whole process. This technique can simulate and optimize the arrangement and spatial arrangement for maintenance in limited space. It has been applied successfully in the reactor vessel head replacement for Unit 2 of Daya Bay NPP to shorten the time for key routes and the total time of this project by 16 hours and 92.5 hours, respectively. (author)

Yale High Energy Physics Research: Precision Studies of Reactor Antineutrinos

International Nuclear Information System (INIS)

Heeger, Karsten M.

2014-01-01

This report presents experimental research at the intensity frontier of particle physics with particular focus on the study of reactor antineutrinos and the precision measurement of neutrino oscillations. The experimental neutrino physics group of Professor Heeger and Senior Scientist Band at Yale University has had leading responsibilities in the construction and operation of the Daya Bay Reactor Antineutrino Experiment and made critical contributions to the discovery of non-zero$\\theta . Heeger and Band led the Daya Bay detector management team and are now overseeing the operations of the antineutrino detectors. Postdoctoral researchers and students in this group have made leading contributions to the Daya Bay analysis including the prediction of the reactor antineutrino flux and spectrum, the analysis of the oscillation signal, and the precision determination of the target mass yielding unprecedented precision in the relative detector uncertainty. Heeger's group is now leading an R\\&D effort towards a short-baseline oscillation experiment, called PROSPECT, at a US research reactor and the development of antineutrino detectors with advanced background discrimination.

Yale High Energy Physics Research: Precision Studies of Reactor Antineutrinos

Energy Technology Data Exchange (ETDEWEB)

Heeger, Karsten M. [Yale Univ., New Haven, CT (United States)

2014-09-13

This report presents experimental research at the intensity frontier of particle physics with particular focus on the study of reactor antineutrinos and the precision measurement of neutrino oscillations. The experimental neutrino physics group of Professor Heeger and Senior Scientist Band at Yale University has had leading responsibilities in the construction and operation of the Daya Bay Reactor Antineutrino Experiment and made critical contributions to the discovery of non-zero$\\theta_{13}$. Heeger and Band led the Daya Bay detector management team and are now overseeing the operations of the antineutrino detectors. Postdoctoral researchers and students in this group have made leading contributions to the Daya Bay analysis including the prediction of the reactor antineutrino flux and spectrum, the analysis of the oscillation signal, and the precision determination of the target mass yielding unprecedented precision in the relative detector uncertainty. Heeger's group is now leading an R\\&D effort towards a short-baseline oscillation experiment, called PROSPECT, at a US research reactor and the development of antineutrino detectors with advanced background discrimination.

Six New Tetraprenylated Alkaloids from the South China Sea Gorgonian Echinogorgia pseudossapo

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Zhang-Hua Sun

2014-01-01

Full Text Available Six new tetraprenylated alkaloids, designated as malonganenones L–Q (1–6, were isolated from the gorgonian Echinogorgia pseudossapo, collected in Daya Bay of Guangdong Province, China. The structures of 1–6 featuring a methyl group at N-3 and a tetraprenyl chain at N-7 in the hypoxanthine core were established by extensive spectroscopic analyses. Compounds 1–6 were tested for their inhibitory activity against the phosphodiesterases (PDEs-4D, 5A, and 9A, and compounds 1 and 6 exhibited moderate inhibitory activity against PDE4D with IC50 values of 8.5 and 20.3 µM, respectively.

Difference of nitrogen-cycling microbes between shallow bay and deep-sea sediments in the South China Sea.

Science.gov (United States)

Yu, Tiantian; Li, Meng; Niu, Mingyang; Fan, Xibei; Liang, Wenyue; Wang, Fengping

2018-01-01

In marine sediments, microorganisms are known to play important roles in nitrogen cycling; however, the composition and quantity of microbes taking part in each process of nitrogen cycling are currently unclear. In this study, two different types of marine sediment samples (shallow bay and deep-sea sediments) in the South China Sea (SCS) were selected to investigate the microbial community involved in nitrogen cycling. The abundance and composition of prokaryotes and seven key functional genes involved in five processes of the nitrogen cycle [nitrogen fixation, nitrification, denitrification, dissimilatory nitrate reduction to ammonium (DNRA), and anaerobic ammonia oxidation (anammox)] were presented. The results showed that a higher abundance of denitrifiers was detected in shallow bay sediments, while a higher abundance of microbes involved in ammonia oxidation, anammox, and DNRA was found in the deep-sea sediments. Moreover, phylogenetic differentiation of bacterial amoA, nirS, nosZ, and nrfA sequences between the two types of sediments was also presented, suggesting environmental selection of microbes with the same geochemical functions but varying physiological properties.

Gradient Analysis and Classification of Carolina Bay Vegetation: A Framework for Bay Wetlands Conservation and Restoration

Energy Technology Data Exchange (ETDEWEB)

Diane De Steven,Ph.D.; Maureen Tone,PhD.

1997-10-01

This report address four project objectives: (1) Gradient model of Carolina bay vegetation on the SRS--The authors use ordination analyses to identify environmental and landscape factors that are correlated with vegetation composition. Significant factors can provide a framework for site-based conservation of existing diversity, and they may also be useful site predictors for potential vegetation in bay restorations. (2) Regional analysis of Carolina bay vegetation diversity--They expand the ordination analyses to assess the degree to which SRS bays encompass the range of vegetation diversity found in the regional landscape of South Carolina's western Upper Coastal Plain. Such comparisons can indicate floristic status relative to regional potentials and identify missing species or community elements that might be re-introduced or restored. (3) Classification of vegetation communities in Upper Coastal Plain bays--They use cluster analysis to identify plant community-types at the regional scale, and explore how this classification may be functional with respect to significant environmental and landscape factors. An environmentally-based classification at the whole-bay level can provide a system of templates for managing bays as individual units and for restoring bays to desired plant communities. (4) Qualitative model for bay vegetation dynamics--They analyze present-day vegetation in relation to historic land uses and disturbances. The distinctive history of SRS bays provides the possibility of assessing pathways of post-disturbance succession. They attempt to develop a coarse-scale model of vegetation shifts in response to changing site factors; such qualitative models can provide a basis for suggesting management interventions that may be needed to maintain desired vegetation in protected or restored bays.

KELIMPAHAN STOK SUMBER DAYA IKAN DEMERSAL DI PERAIRAN SUB AREA LAUT JAWA

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Badrudin Badrudin

2016-06-01

Full Text Available Tulisan ini menyajikan data dan informasi tentang present status perikanan demersal di Laut Jawa, dan tingkat pemanfaatan sumber daya ikan di sub area Laut Jawa yang tidak merata. Data yang dianalisis merupakan sebagian hasil survei Balai Riset Perikanan Laut di Pelabuhan Perikanan Pantai Tegal pada tahun 2010 dan pada periode tahun sebelumnya. Eksploitasi sumber daya ikan demersal di perairan Laut Jawa sudah berlangsung sejak lama dan mencapai puncaknya pada sekitar tahun 1970-an di mana trawl dioperasikan secara intensif terutama di sepanjang pantai utara Jawa. Tingginya tekanan penangkapan di perairan pantai sampai kedalaman 40-an m telah menyebabkan menurunnya kelimpahan sumber daya, sebagaimana tampak pada hasil tangkapan cantrang kecil dan jaring arad yang dioperasikan secara harian. Kelimpahan dan ukuran individu ikan demersal di kawasan yang lebih dalam tampak cukup besar sebagaimana tercermin dari hasil tangkapan cantrang besar yang dioperasikan lebih lama. Dari fenomena tersebut dapat diduga bahwa sumber daya ikan demersal di perairan pantai sudah mengalami tangkap lebih (overfishing yang mengarah kepada penurunan stok atau bahkan depleted. Kegiatan penangkapan ikan di perairan yang lebih dalam di mana tekanan penangkapan relatif lebih rendah tampak memberikan keuntungan.   Based on data analysis and information collected, this paper describes the present status of demersal fisheries in the Java Sea and the uneven level of exploitation of the fish resources in the Java Sea sub areas. Data analyzed provide part of research results carried out by the Research Institute for Marine Fisheries. Data were obtained from a number of surveis carried out in Tegal landing place in 2010 and from the previous years. Demersal resources in the Java Sea have been exploited for years, where high fishing intensity occurred in the north coast of Java. High fishing pressure in the coastal waters lead to the decreasing fish resources abundance, as

Temporal changes in TBT pollution in water, sediment, and oyster from Jinhae Bay after the total ban in South Korea.

Science.gov (United States)

Kim, Nam Sook; Hong, Sang Hee; Yim, Un Hyuk; Shin, Kyung-Hoon; Shim, Won Joon

2014-09-15

Temporal change in tributyltin (TBT) levels in Jinhae Bay, which has various TBT sources, was investigated in water, sediments, and oysters from 2003 to 2013 after its total ban in South Korea. The seawater TBT levels decreased over 500-fold from 1995/97 to 2008/09. The oyster TBT levels were about fourfold lower in 2012/13 than in 1995/97. However, the sediment TBT levels did not significantly change, even 10 years after the partial TBT ban on small ships and 7 years after the total TBT ban on all oceangoing vessels in Korea. The total ban of TBT use effectively reduced water and oyster TBT levels in Jinhae Bay, but TBT levels in water, oysters, and sediment remained above the global environmental quality standards established to protect marine organisms. Copyright © 2014 Elsevier Ltd. All rights reserved.

Sepetiba Bay: an integrated study of an harbour location

International Nuclear Information System (INIS)

Bandeira, J.V.; Aun, P.E.; Castro, J.O.N.M. de; Moreira, R.M.

1984-01-01

Several aspects of the construction of an iron-ore and coal terminal in Sepetiba bay (RJ, Brazil) in the region of south of Madeira Island, are presented. The studies include a general view of the geomorphology of the region, analyses of current measurements, water circulation and sedimentology of the bay by conventional methods and by radioactive tracers. (M.A.C.) [pt

PERENCANAAN AGREGAT HEURISTIK UNTUK PENENTUAN SUMBER DAYA YANG OPTIMAL

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Jevi Rosta

2013-04-01

Full Text Available Perencanaan agregat merupakan hal yang sangat penting dalam penentuan sumber daya serta penentuan biaya dalam proses produksi. Dengan perencanaan agregat metode heuristik, perusahaan dapat menentukan tingkat produksinya untuk memenuhi permintaannya melalui alokasi tenaga kerja, persediaan dan subkontrak atau kombinasi antara beberapa alternatif (hibrid. Dalam penelitian ini, dilakukan perencanaan untuk 4 alternatif yaitu variasi tenaga kerja, persediaan, subkontrak dan kombinasi lembur dan persediaan. Dan diperoleh hasil bahwa variasi tenaga kerja adalah alternatif yang terbaik dengan biaya yang paling minimum.

Pengaruh Perendaman Cumi Cumi Segar Dalam Larutan Kitosan Terhadap Daya awetnya Selama Penyimpanan Pada Suhu Kamar

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Jovita Tri Murtini

2007-12-01

Full Text Available Penelitian ini dilakukan untuk melihat pengaruh perendaman dalam larutan kitosan terhadap daya awet cumi‑cumi yang disimpan pada suhu kamar. Pada penelitian ini, cumi‑cumi direndam dalam larutan kitosan masing‑masing dengan variasi konsentrasi 0; 0,30; 0,38; 0,50; dan 0,75% selama 30 menit. Pengamatan kesegaran dilakukan setiap 8 jam sampai produk cumi‑cumi ditolak oleh panelis. Parameter yang diamati meliputi analisis proksimat, Total Volatile Base (TVB, Total Plate Count (TPC dan nilai organoleptik. Hasil penelitian menunjukkan bahwa berdasarkan nilai TVB dan TPC, perlakuan perendaman dalam larutan 0,75% kitosan dapat memperpanjang daya simpan cumi‑cumi selama 16 jam, tetapi perlakuan yang lain, termasuk kontrol, hanya mempunyai daya simpan hingga 8 jam. Akan tetapi dari hasil pengamatan rupa, warna, bau dan tekstur, tanpa memperhatikan rasa pahit, produk baru ditolak panelis pada jam ke‑24 untuk kontrol, jam ke‑32 untuk perlakuan konsentrasi kitosan 0,30; 0,38; dan 0,50%, dan jam ke‑40 untuk konsentrasi tertinggi, yaitu 0,75%. Pada konsentrasi kitosan 0,38 dan 0,50% terdeteksi rasa tambahan berupa rasa agak asam, sedangkan pada konsentrasi 0,75% rasa tambahan berupa rasa agak pahit. Pada konsentrasi kitosan di atas 50%, kulit cumi‑cumi banyak terkelupas, sehingga menurunkan nilai rupa/kenampakan.

Destruction of the Phoenix/Hibiscus and Barringtonia racemosa Communities at Richards Bay, Natal, South Africa

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P. J. Weisser

1982-10-01

Full Text Available The destruction of the Phoenix!Hibiscus and Barringtonia racemosa Communities described by Venter in 1972 on the southern shores of Richards Bay is reported. The cause was the artificial openingof a new mouth about 5,5 km south of the original mouth, which increased tidal range and salinity. These swamp communities occupied a narrow band about 6 ha in area behind the Bruguiera gymnorrhiza Community. An estimated 95 % of the communities was affected and only on the landward border were some isolated remnants of species such as Acrostichum aureum, Hibiscus tiliaceus and Phoenix reclinata detected .Young stands of  Phragmites australis, seedlings of  Bruguiera gymnorrhiza and Avicennia marina and epipelic algae are recoIonizing the affected area.

76 FR 31846 - Safety Zone; 28th Annual Humboldt Bay Festival, Fireworks Display, Eureka, CA

Science.gov (United States)

2011-06-02

...-AA00 Safety Zone; 28th Annual Humboldt Bay Festival, Fireworks Display, Eureka, CA AGENCY: Coast Guard... support of the 28th Annual Humboldt Bay Festival Fireworks Display on the specified waters off the South... Humboldt Bay Festival Fireworks Display. The fireworks display is for entertainment purposes. This safety...

Pengaruh prosentase etanol terhadap daya dan konsumsi bahan bakar mesin pembakaran busi

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Mega Nur Sasongko

2017-03-01

Full Text Available Abstrak: Penelitian ini merupakan studi eksperimental pengaruh penambahan etanol terhadap kinerja mesin pembakaran busi (mesinbensin, meliputi daya efektif dan konsumsi bahan bakar spesifiknya. Mesin yang digunakan dalam penelitian ini berupa mesinempat langkah silinder tunggal, system injeksi tidak langsung, dengan volume 124.8 cc dan rasio kompresi 9.3 : 1. Pengujiandilakukan pada 8 kecepatan putaran mesin yang berbeda mulai dari 1500 rpm sampai 5000 rpm, dengan 10 tipe campuranbensin dan etanol (E10 sampai E100. Hasil pengujian menunjukkan bahwa daya efektif mesin menurun dengan peningkaranetanol dalam campuran untuk semua variasi kecepatan putaran mesin. Daya maksimum dicapai pada putaran mesin 2500sampai 3000 rpm. Etanol memiliki nilai kalor yang lebih rendah dibanding bensin, sehingga peningkatan kandungan etanoldalam bahan bakar menyebabkan kenaikan konsumsi bahan bakar spesifik mesin.Kata kunci: etanol; bahan bakar bensin-etanol; performa mesin, konsumsi bahan bakar spesifik Abstract: This present study investigated experimentally the influence of ethanol addition on the engine performance; in the term ofeffective power and Brake specific fuel consumptio of gasoline spark ignition engine. The engine used in the research was a 4stroke single-cylinder, indirect injection system with volume of 124.8 cc and compression ratio of 9.3:1. The experiments wereconducted at eight different engine speeds ranging from 1500 rpm to 5000 rpm and 10 types of gasoline-ethanol mixtures (E10to E100. The result showed that the effective power decreased with increasing of ethanol in the fuel blends for all variation ofengine speed. The maximum power of the engine was obtained at engine speed around 2500 to 3000 rpm. Since the ethanolhas a lower heating value than that of gasoline, ethanol addition in the blend fuel causes the increment of Brake Specific FuelConsumptionKeywords: ethanol; gasoline-ethanol fuel; spark ignition engine; engine performance, brake

Observations and a linear model of water level in an interconnected inlet-bay system

Science.gov (United States)

Aretxabaleta, Alfredo; Ganju, Neil K.; Butman, Bradford; Signell, Richard

2017-01-01

A system of barrier islands and back-barrier bays occurs along southern Long Island, New York, and in many coastal areas worldwide. Characterizing the bay physical response to water level fluctuations is needed to understand flooding during extreme events and evaluate their relation to geomorphological changes. Offshore sea level is one of the main drivers of water level fluctuations in semienclosed back-barrier bays. We analyzed observed water levels (October 2007 to November 2015) and developed analytical models to better understand bay water level along southern Long Island. An increase (∼0.02 m change in 0.17 m amplitude) in the dominant M2 tidal amplitude (containing the largest fraction of the variability) was observed in Great South Bay during mid-2014. The observed changes in both tidal amplitude and bay water level transfer from offshore were related to the dredging of nearby inlets and possibly the changing size of a breach across Fire Island caused by Hurricane Sandy (after December 2012). The bay response was independent of the magnitude of the fluctuations (e.g., storms) at a specific frequency. An analytical model that incorporates bay and inlet dimensions reproduced the observed transfer function in Great South Bay and surrounding areas. The model predicts the transfer function in Moriches and Shinnecock bays where long-term observations were not available. The model is a simplified tool to investigate changes in bay water level and enables the evaluation of future conditions and alternative geomorphological settings.

Establishment and extinction of a population of South Georgian diving petrel (Pelecanoides georgicus) at Mason Bay, Stewart Island, New Zealand, during the late Holocene

International Nuclear Information System (INIS)

Holdaway, R.N.; Jones, M.D.; Beavan Athfield, N.R.

2003-01-01

A population of South Georgian diving petrels (Pelecanoides georgicus) (c. 130 g) became extinct at Mason Bay, on the west coast of Stewart Island, before European settlement. Pacific rat (Rattus exulans) bones with the diving petrel fossils provided an opportunity to determine whether the rats arrived before the petrels went extinct. Fifteen 14 C accelerator mass spectrometry (AMS) ages on purified diving petrel bone gelatin from various parts of Mason Bay clustered unexpectedly in the 14th and 15th centuries AD, and none was older. Bayesian statistical analysis, using a Markov Chain Monte Carlo procedure, gave a 95% probability that the diving petrel colony was founded between 1338 and 1440 AD, lasted 40-310 years, and became extinct between 1475 and 1650 AD. Possible reasons for the late colonisation of Mason Bay by South Georgian diving petrels burrow are discussed. Bayesian analysis of five 14 C AMS determinations on Pacific rat bone gelatin did not exclude the possibility that the Pacific rat arrived before the diving petrel colony was established. However, the enriched δ 13 C of their bone gelatin suggests that the rats had a partially marine diet, and a terrestrial calibration procedure for their AMS ages was probably not appropriate. The Pacific rat is likely to have arrived after the diving petrel colony became established and probably caused the bird's extinction after a short period of coexistence. (author). 103 refs., 3 figs., 5 tabs

Temperature profile and other data collected from XBT casts in South Pacific Ocean from BOTANY BAY and other platforms from 24 January 1991 to 20 November 1991 (NODC Accession 9400208)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and other data were collected using XBT casts from BOTANY BAY and other platforms in South Pacific Ocean. Data were collected from 24 January...

Arbovirus circulation, temporal distribution, and abundance of mosquito species in two Carolina bay habitats.

Science.gov (United States)

Ortiz, D I; Wozniak, A; Tolson, M W; Turner, P E

2005-01-01

Carolina bays, a type of geomorphic feature, may be important in the ecology of mosquito vectors in South Carolina. Their hydrology varies from wetland habitats with marked flooding/drying regimes to permanently flooded spring-fed lakes. Moreover, they possess characteristics that contribute to the support of a particularly abundant and diverse invertebrate fauna. Although it has been estimated that 2,700+ bays exist in South Carolina, approximately 97% have been altered; Heritage Preserve (SBHP) and Woods Bay State Park (WBSP), from June 1997 to July 1998 to determine mosquito temporal distribution, species composition, and the occurrence of arbovirus activity. The largest mosquito collection was obtained at WBSP (n = 31,172) representing 25 species followed by SBHP (n = 3,940) with 24 species. Anopheles crucians complex were the most common species encountered in both bays. Two virus isolates were obtained from SBHP in 1997: Keystone (KEY) virus from Ochlerotatus atlanticus-tormentor and Cache Valley (CV) virus from Oc. canadensis canadensis. Twenty-nine (29) arbovirus-positive pools were obtained from WBSP: 28 in 1997 and one in 1998. KEY virus was isolated from three pools of Oc. atlanticus-tormentor and Tensaw (TEN) virus was isolated from two pools of An. crucians complex; 10 isolates could not be identified with the sera available. Additionally, 14 pools of An. crucians complex tested positive for Eastern equine encephalitis (EEE) virus antigen. These represent the first record of KEY and CV viruses in South Carolina. Our data indicate the presence of high mosquito density and diversity in both Carolina bay habitats, which may be influenced, in part, by seasonal changes in their hydroperiods. The study of mosquito and arbovirus ecology in Carolina Bay habitats could provide more information on the transmission dynamics of arboviruses and its impact on human and animal arboviral disease occurrence in South Carolina.

EVALUASI DAYA TAHAN IKAN MAS HASIL SELEKSI BERDASARKAN MARKA MOLEKULER MHC-II TERHADAP INFEKSI KOI HERPES VIRUS

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Erma Primanita Hayuningtyas

2015-03-01

mengevaluasi daya tahan benih ikan mas F-1 terseleksi terhadap infeksi KHV melalui uji tantang. Sebagai pembanding, digunakan ikan mas populasi benih F-1 non-seleksi dan populasi benih ikan mas dari unit pembenihan rakyat (UPR. Ikan uji berupa benih ikan mas Rajadanu berumur dua bulan dengan bobot ratarata 5,5±0,5 g. Jumlah benih pada masing-masing wadah perlakuan sebanyak 30 ekor dengan tiga kali pengulangan. Wadah pengujian berupa akuarium berukuran 40 cm x 60 cm x 40 cm dengan kepadatan 1 ekor/L. Parameter yang diamati adalah sintasan, deteksi KHV, analisis ekspresi gen MHC-II, dan gambaran darah ikan. Hasil penelitian menunjukkan bahwa populasi benih F-1 terseleksi memiliki daya tahan lebih baik dengan sintasan 93,33% dibandingkan populasi benih F-1 non-seleksi sebesar 85,55% dan populasi benih dari UPR sebesar 81,11%. Daya tahan yang tinggi pada populasi benih F-1 terseleksi didukung oleh hasil deteksi KHV yang negatif dan ersentase jumlah limfosit yang lebih tinggi sebesar 91,67%; serta rendahnya persentase monosit dan heterofil, selain itu, tidak adanya eosinofil dan basofil. Ekspresi gen MHC-II terdeteksi pada berbagai organ, ekspresi tertinggi ditemukan pada organ limpa.

Analisis Isi Daya Tarik Pesan Iklan Berdasarkan Elemen Print Ad pada Iklan Sabun Mandi di Majalah Femina

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Nadya Istighfarina

2017-07-01

Full Text Available One of mass media in Indonesia that used for advertising is Femina magazine. The target audience of Femina is women and because of its target audience, so Femina being potential magazine for cosmetics and toiletries product to advertise. One of toiletries product is soap. In copywriting, print ad has an element that consist of headline, subheadline, body copy and ilustration. An advertisement has an appealing point that consist of informational, emotional and combination to attract the readers. The aim of this research is to identify domination of appealing point by print ad element in soap advertisement on Femina magazine period of Jauari 2014- August 2016. Method of this research using quantitative descriptive content analysis. Total object of this research are 27 advertisement. The result of this research showing that domination of using headline in advertisement is provocative headline with percentage 44,44%, advertisement tend to not using subheadline with percentage 51,85%, domination of body copy in advertisement is use picture- caption copy with percentage 48,15%, advertisement tend to using photography ilustration technique with percentage 96,29% and domination of appealing point is using informational appealing point with percentage 48,15%. Salah satu media massa yang terdapat di Indonesia yang digunakan untuk sarana beriklan adalah majalah wanita Femina. Karena target pembaca Femina adalah untuk wanita, maka Femina adalah majalah berpotensial bagi para produk kecantikan dan toiletries untuk beriklan. Salah satu produk toiletries adalah sabun mandi. Dalam penulisan iklan (print ad memiliki elemen yang terdiri dari headline, subheadline, body copy dan ilustrasi serta mengandung suatu daya tarik agar menarik perhatian pembaca yang terdiri dari daya tarik rasional, emosional dan kombinasi. Tujuan penelitian adalah untuk mengetahui dominasi daya tarik pesan berdasarkan elemen print ad pada iklan produk sabun mandi di majalah Femina periode

PERBANDINGAN METODE JUNBIKI KANBAN CYCLIC DITINJAU DARI JIT DAN SUMBER DAYA Studi Kasus pada Perusahaan Otomotif

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Ignatius Eri

2005-01-01

Full Text Available The research has done at an automotive company. The intention of this research are to knowing the effect and also the advantages and disadvantages of Junbiki Method which is a new method in this company in increasing JIT(Just in Time, use of resources, and make comparison between Junbiki method and Kanban System. The research is done by comparing the Kanban system with the Junbiki method on the parts i.e. seat part and door trim. The measured variables are those in the period of September as the basic period, continued with the periods of October, November, and December 2004. The productivities to be observed are those of energy and labor consumption. The research proves that the Junbiki method is better than the Kanban system. It is shown from the increase of JIT performance during four periods at the average of 73% and least of resources. By using the Junbiki method, the wastage in the use of energy, labor, movement, and process can be eliminated. Abstract in Bahasa Indonesia : Penelitian ini dilakukan pada perusahaan yang bergerak di bidang otomotif. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh serta kelemahan dan kelebihan metode Junbiki yang merupakan metode baru yang diterapkan perusahaan terhadap peningkatan JIT (Just in Time dan penggunaan sumber daya, dan membuat perbandingan antara metode Junbiki dan sistem Kanban. Penelitian ini dilakukan dengan membandingkan sistem Kanban dengan metode Junbiki pada part yang memenuhi syarat, yaitu part seat dan door trim. Variable yang diukur adalah pada periode September sebagai periode dasar, dilanjutkan dengan periode Oktober, November, dan Desember 2004. Pemakaian sumber daya yang ingin diteliti adalah pemakaian energi dan tenaga kerja. Hasil penelitian membuktikan bahwa metode Junbiki lebih baik daripada sistem Kanban. Hal ini terlihat dari peningkatan perfoma JIT selama empat periode rata-rata sebesar 73% dan kebutuhan sumber daya yang lebih sedikit. Dengan metode Junbiki

PENGELOLAAN SUMBER DAYA HUTAN DI KABUPATEN LAMPUNG BARAT (Suatu Executive Summary Naskah Akademik

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Armen Yasir

2014-03-01

Full Text Available Tujuan penelitian ini adalah untuk mengetahui Kajian Tioritis dan Praktik Empiris, Landasan Filosofis, Sosiologis dan Yuridis, Peraturan Perundang-Undangan Yang Terkait, Jangkauan, Arah Pengaturan dan Ruang Lingkup Materi Muatan Peraturan Daerah Pengelolaan Sumberdaya Hutan Di Kabupaten Lampung Barat. Hasil penelitian menunjukkan bahwa secara teoritis dan praktis pengelolaan sumber daya hutan adalah berbasis pada kewenangan daerah yang bersumber pada peraturan perundang-undangan. Landasan filosofis bersandar pada nilai-nilai kearifan pemanfaat sumber daya hutan, sedangkan landasan sosiologis bersumber pada perilaku publik dan landasan yuridis secara hirarkis struktural bersumber dari norma atau peraturan perundang-undangan dari tingkat terendah sampai pada derajat konstitusi. Adapun peraturan perundang-undangan terkait meliputi bidang konesrvasi alam, kehutanan dan pengelolaan lingkungan hidup. Adapun Jangkauan, Arah Pengaturan Dan Ruang Lingkup Materi Muatan Peraturan Daerah Pengelolaan Sumberdaya Hutuan Di Kabupaten Lampung Barat adalah mencakup materi muatan peraturan daerah yang diperintah oleh peraturan perundang-undangan yang lebih tinggi, atau yang sederajat maupun dalam rangka menjalankan urusan otonomi daerah. Kata kunci : Pengelolaan, Sumberdaya Hutan dan Otonomi Daerah.

Studies of movement of sediments in Santos bay

International Nuclear Information System (INIS)

Bandeira, J.V.; Aun, P.E.; Bomtempo, V.L.; Salim, L.H.; Minardi, P.S.P.; Santos, J.A.

1990-01-01

In the years of 1973, 74, 80, 81 and 85 several studies were performed at Santos bay, using radioactive tracers, with the following main objectives: to evaluate the behaviour (on the bottom and in suspension) of the mixture of silt and clay which is dredged from the estuary and from its access channel and dumped at pre-determined sites, in the bay and surrounding regions, with the objective of optimizing dredging disposal operations; to quantify the movement of sandy sediments on the bottom, in 3 areas of the bay, in summer and winter conditions, to obtain pertinent information related to the siltation of the access channel. As results of these studies, it was found that: the ancient dumping site, near Itaipu Point, in the western limit of the bay, was inadequate, since the material could return to the bay and to the estuary. The dumping site was moved to a region at the south of Moela Island, located eastwards relative to the bay, which brought substantial economies in dredging works; the bottom sediment transport was quantified, following clouds of tagged materials for about 8 months, thus obtaining important conclusions about transport rates in different regions of the bay. An analysis of the intervening hydrodynamic agents is also presented. (author) (L.J.C.)

POSISI DAYA SAING DAN FAKTOR-FAKTOR YANG MEMENGARUHI EKSPOR BUAH-BUAHAN INDONESIA

Directory of Open Access Journals (Sweden)

Amalia Pradipta

2015-02-01

Full Text Available The success of competitiveness of Indonesian fruits export in the destination countries is determined by comparative and competitive advantage and other factors. Revealed Comparative Advantage (RCA and Export Product Dynamic (EPD are used in this research to analyze the position of competitiveness of Indonesian fruits export. This research also uses panel gravity model to analyze the factors which affect the export volume of Indonesia fruits (mango, mangosteen, rambutan, banana, and melon. The results from EPD and RCA method show that fruits which have the highest comparative and competitive advantage in destination countries and the world are mangoesteen, mango, and guava. Indonesian fruit which lost its opportunity to compete in the destination countries is strawberry. The results of this research shows that the factors which influence the export of Indonesian fruits to the destination countries are export price, population, economic distance, real GDP and GDP per capita, real exchange rate, Indonesian consumer price index, and dummy variable of crisis which happened in Europe.Keywords: competitiveness, EPD, gravity model, RCAABSTRAKKeberhasilan daya saing ekspor buah Indonesia di negara tujuan ditentukan oleh keunggulan komparatif dan kompetitif serta faktor lainnya. Revealed Comparative Advantage (RCA dan Export Product Dynamic (EPD digunakan untuk menganalisis posisi daya saing ekspor buah-buahan Indonesia. Pada penelitian ini digunakan analisis data panel gravity model untuk menganalisis faktor-faktor yang memengaruhi aliran volume ekspor buah-buahan Indonesia (mangga, manggis, rambutan, pisang, dan melon. Pada metode Export Product Dynamic (EPD dan Revealed Comparative Advantage (RCA menunjukkan bahwa buah yang memiliki keunggulan komparatif dan kompetitif tertinggi di negara tujuan dan dunia adalah buah manggis, mangga, dan jambu. Ekspor buah Indonesia yang kehilangan kesempatan dalam bersaing di negara tujuan adalah stroberi. Hasil

Some atmospheric dispersion, wind and temperature statistics from Jervis Bay, Australian Capital Territory 1972 to 1974

International Nuclear Information System (INIS)

Clark, G.H.

1985-07-01

A meteorological study of winds, temperatures and Pasquill stability categories was conducted in the coastal conditions at Jervis Bay. Three Pasquill stability categorisation schemes were compared. These indicated a predominance of neutral to slightly unstable conditions. During the daytime, north bay breezes and north-east sea breezes were most common together with on-shore south-east winds. Off-shore south-west winds prevailed during winter and were observed most frequently at night

Patterns of alien plant invasion across coastal bay areas in southern China

Science.gov (United States)

Hai Ren; Qinfeng Guo; Hong Liu; Jing Li; Qianmei Zhang; Hualin Xu; Fanghong Xu

2014-01-01

An understanding of the ways in which levels of invasions by alien species are correlated with environmental factors is helpful to manage the negative impacts of these invasive species. Two tropical coastal areas in South China, Shenzhen Bay and Leizhou Bay, are national nature reserves, but they are threatened by invasive plants. Here, we investigated the level of...

The effects of coal dust on photosynthetic performance of the mangrove, Avicennia marina in Richards Bay, South Africa

International Nuclear Information System (INIS)

Naidoo, G.; Chirkoot, D.

2004-01-01

Richards Bay, on the northern KwaZulu-Natal coast, is the largest coal exporting port in South Africa. The coal is stored at the Richards Bay Coal Terminal (RBCT) prior to export. Dust from coal operations is a major problem in the Richards Bay area. In this study, we tested the hypothesis that coal dust adversely affects photosynthetic performance of Avicennia marina (Forssk.) Vierh., the dominant mangrove species in the harbour. Photosynthetic performance was determined on 10 trees by measuring carbon dioxide uptake and chlorophyll fluorescence parameters at two elevation sites and on upper and lower leaf surfaces that were covered or uncovered with coal dust. Measurements were made on five clear, sunny days at saturating light (>1000 μmol m -2 s -1 ) and high temperature (28-30 deg. C). Coal dust significantly reduced carbon dioxide exchange of upper and lower leaf surfaces by 17-39%, the reduction being generally greater on the lower leaf surface that is covered by a dense mat of trichomes and salt glands. The reduction in carbon dioxide exchange by coal dust was higher at the high elevation site that supported isolated dwarfed trees. The chlorophyll fluorescence data indicated that leaves coated with dust exhibited significantly lower photosystem II (PS II) quantum yield, lower electron transport rate (ETR) through PSII and reduced quantum efficiency of PSII (F v F m ). The chlorophyll fluorescence data supported the gas exchange measurements and are consistent with reduced photosynthetic performance of leaves coated with coal dust. - Coal dust reduced photosynthetic performance of the mangrove, Avicennia marina

33 CFR 110.156 - Randall Bay, Freeport, Long Island, N.Y.

Science.gov (United States)

2010-07-01

... Island, N.Y. 110.156 Section 110.156 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.156 Randall Bay, Freeport, Long Island, N.Y. (a) The anchorage grounds. Southward of a line 312 feet south of and parallel to the south side...

ISOLASI DAN UJI DAYA ANTIMIKROBA EKSTRAK DAUN KERSEN (Muntingia calabura

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YP Arum

2013-07-01

Full Text Available Daun kersen mengandung senyawa flavonoid. Flavonoid yang merupakan senyawa obat dapat digunakan sebagai antioksidan, antibakteri, dan antiinflamasi. Tujuan dari penelitian ini adalah untuk mengetahui daya antimikroba ekstrak daun kersen terhadap Eschericia coli, Pseudomonas aeruginosa, Bacillus subtilis, dan Staphylococcus aureus. Metode penelitian yang digunakan adalah mengisolasi senyawa flavonoid dari daun kersen dengan menggunakan larutan etanol dan metanol. Identifikasi flavonoid dilakukan dengan menggunakan IR dan UV-Vis. Selanjutnya sifat antibakteri flavonoid diujikan pada bakteri Eschericia coli, Pseudomonas aeruginosa, Bacillus subtilis dan Staphylococcus aureus. Hasil penelitian menunjukkan bahwa ekstrak hasil isolasi daun kersen merupakan senyawa flavonoid berupa auron, flavonol, dan flavon. Hal ini ditunjukkan dengan munculnya puncak pada spketrum UV-Vis di daerah panjang gelombang 382 nm, 350 nm dan 323 nm serta diperkuat dengan munculnya serapan khas C=O dan –OH pada spektrum IR. Ekstrak hasil isolasi daun kersen dengan pelarut etanol dan metanol memiliki daya hambat terhadap bakteri yakni terbukti mempunyai sifat antibakteri terhadap bakteri Eschericia coli, Pseudomonas aeruginosa, Bacillus subtilis, dan Staphylococcus aureus. Semakin tinggi konsentrasi ekstrak daun kersen semakin tinggi pula daya hambatnya terhadap bakteri. Ekstrak yang paling efektif menghambat bakteri adalah pada ekstrak dengan konsentrasi 96% dengan pelarut metanol. Cherry leaves can be used as a drug because it contains of flavonoid compounds, which contain antioxidant, antibacterial, and anti-inflammatory. The study was aimed to determine the antimicrobial strength of cherry leaf extract against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and Staphylococcus aureus. This research used flavonoid compound from cherry leaves isolation method by using ethanol and methanol solvent. IR and UV-Vis was used to identify flavonoid, then

DAYA ADAPTASI TIGA SPESIES IKAN PATIN PADA LINGKUNGAN YANG BERBEDA

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Evi Tahapari

2018-01-01

Full Text Available Penampilan fenotipe suatu organisme ditentukan oleh faktor genotipe dan faktor lingkungan tempat organisme tersebut hidup. Penelitian ini bertujuan untuk mempelajari daya adaptasi tiga spesies ikan patin yang dipelihara di lokasi berbeda. Ikan patin siam, patin jambal, dan patin pasupati dengan rataan bobot 20 g dipelihara di tiga lokasi yang berbeda, yaitu: kolam air tenang, tambak, dan keramba jaring apung. Pemeliharaan ikan dilakukan selama empat bulan. Selama pemeliharaan, ikan diberi pakan berupa pelet komersial dengan kadar protein 30%–32%. Jumlah pakan yang diberikan pada bulan kesatu sampai keempat secara berturut-turut adalah sebanyak 5%, 4%, dan 3% dari biomassa ikan per hari. Pakan diberikan dengan frekuensi tiga kali sehari. Hasil penelitian menunjukkan adanya interaksi yang signifikan antara genotipe ikan patin dengan lingkungan ekosistem yang berbeda dan daya adaptasi yang spesifik dari ketiga spesies ikan patin. Ketiga spesies ikan patin memiliki pertumbuhan sama bila dipelihara di kolam air tenang. Ikan patin jambal tumbuh dengan baik (P0,05. Ketiga spesies ikan patin mempunyai daya adaptasi lingkungan yang sempit sehingga budidayanya akan optimal jika dilakukan di lokasi tertentu saja. The phenotypic appearance of an organism is determined by genotypes and environmental factors in which the organism lives. This study aims to study the adaptability of three species of pangasiids reared in three different environments. Three species of catfish (Siamese pangasiid, jambal pangasiid, and pasupati with an average weight of 20 gwere kept in stagnant water pond, brackishwater pond, and floating net cage. Fishes were reared for four months. During the rearing, fish were fed by commercial pellets with 30%-32% protein content. The amount of feed given in the first month to the fourth month was 5%, 4%, and 3% of the biomass per day. Feed was given three times a day. The results showed the significant interaction between pangasiid genotype

Spatial and temporal trends of contaminants in eggs of wading birds from San Francisco Bay, California

Science.gov (United States)

Hothem, R.L.; Roster, D.L.; King, K.A.; Keldsen, T.J.; Marois, Katherine C.; Wainwright, S.E.

1995-01-01

Between 1989 and 1991, reproduction by black-crowned night-herons (Nycticorax nycticorax) and snowy egrets (Egretta thula) was studied at sites in San Francisco Bay. Eggs were collected from these and other bay sites and from South Wilbur Flood Area, a reference site in California's San Joaquin Valley. Eggs were analyzed for inorganic trace elements, organochlorine pesticides, and polychlorinated biphenyls (PCBs). Results were compared among sites and years and with results of previous studies. There was some evidence of impaired reproduction, but concentrations of contaminants were generally lower than threshold levels for such effects. Egg hatchability was generally good, with predation being the factor that most limited reproductive success. Mean PCB concentrations were generally higher in eggs from the south end of San Francisco Bay than from the north, but the only temporal change, an increase, was observed at Alcatraz Island. There were spatial differences for p,p'-DDE in night-heron eggs in 1990, but the highest mean concentration of DDE was in night-heron eggs from South Wilbur in 1991. Temporal declines in maximum concentrations of DDE in eggs were observed in the bay, but means did not change significantly over time, At Bair Island in the southern end of the bay, mean concentrations of mercury decreased while selenium increased in night-heron eggs over time, but there were no clear bay-wide spatial or temporal trends for either element.

The application of the health effects models to the severe accident consequence analysis of nuclear power plants

International Nuclear Information System (INIS)

Yang Ling; Yeung, M.R.

1998-01-01

Health Effect Model (HEM) is an important model used in the analysis of severe accidents consequence of the Nuclear Power Plants (NPP). The accuracy of HEM affects the reliability of the assessment for the accidents consequences, and furthermore, the effectiveness of the emergency countermeasures taken for the health protection of the public around the NPPs. Based on the NUREG/CR4214 series reports, the paper sets appropriate parameters for HEM by studying both early and late HEMs used for domestic NPP accident consequence analysis. In the study, the Guangdong Daya Bay NPP is chosen as an example study to calculate the health risk of the Hong Kong population caused by Daya Bay NPP

Modeling on a PWR power conversion system with system program

International Nuclear Information System (INIS)

Gao Rui; Yang Yanhua; Lin Meng

2007-01-01

Based on the power conversion system of nuclear and conventional islands of Daya Bay Power Station, this paper models the thermal-hydraulic systems of primary and secondary loops for PWR by using the PWR best-estimate program-RELAP5. To simulate the full-scope power conversion system, not only the traditional basic system models of nuclear island, but also the major system models of conventional island are all considered and modeled. A comparison between the calculated results and the actual data of reactor demonstrates a fine match for Daya Bay Nuclear Power Station, and manifests the feasibility in simulating full-scope power conversion system of PWR by RELAP5 at the same time. (authors)

ANALISIS KONDISI TERAS REAKTOR DAYA MAJU AP1000 PADA KECELAKAAN SMALL BREAK LOCA

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Andi Sofrany Ekariansyah

2015-06-01

Full Text Available ABSTRAK ANALISIS KONDISI TERAS REAKTOR DAYA MAJU AP1000 PADA KECELAKAAN SMALL BREAK LOCA. Kecelakaan yang diakibatkan oleh kehilangan pendingin (loss of coolant accident / LOCA dari sistem reaktor merupakan kejadian dasar desain yang tetap diantisipasi dalam desain reaktor daya yang mengadopsi teknologi Generasi II hingga IV. LOCA ukuran kecil (small break LOCA memiliki dampak yang lebih signifikan terhadap keselamatan dibandingkan LOCA ukuran besar (large break LOCA seperti terlihat pada kejadian Three-Mile Island (TMI. Fokus makalah adalah pada analisis small break LOCA pada reaktor daya maju Generasi III+ yaitu AP1000 dengan mensimulasikan tiga kejadian pemicu yaitu membukanya katup Automatic Depressurization System (ADS secara tak disengaja, putusnya salah satu pipa Direct Vessel Injection (DVI secara double-ended, dan putusnya pipa lengan dingin dengan diameter bocoran 10 inci. Metode yang digunakan adalah simulasi kejadian pada model AP1000 yang dikembangkan secara mandiri menggunakan program perhitungan RELAP5/SCDAP/Mod3.4. Dampak yang ingin dilihat adalah kondisi teras selama terjadinya small break LOCA yang terdiri dari pembentukan mixture level dan transien temperatur kelongsong bahan bakar. Hasil simulasi menunjukkan bahwa mixture level untuk semua kejadian small break LOCA berada di atas tinggi teras aktif yang menunjukkan tidak terjadinya core uncovery. Adanya mixture level berpengaruh pada transien temperatur kelongsong yang menurun dan menunjukkan pendinginan bahan bakar yang efektif. Hasil di atas juga identik dengan hasil perhitungan program lain yaitu NOTRUMP. Keefektifan pendinginan teras juga disebabkan oleh berfungsinya injeksi pendingin melalui fitur keselamatan pasif yang menjadi ciri reaktor daya AP1000. Secara keseluruhan, hasil analisis menunjukkan model AP1000 yang telah dikembangkan dengan RELAP5 dapat digunakan untuk keperluan analisis kecelakaan dasar desain pada reaktor daya maju AP1000. Kata kunci: analisis

Meteorological, biological, and hydrographic data collected from Middle Bay Lighthouse in Mobile Bay, AL from 05/23/2005 - 12/31/2013 (NODC Accession 0117376)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Abstract: Dauphin Island Sea Lab and the Mobile Bay National Estuary Program have partnered with the University of South Alabama, the Alabama Department of...

Seismic stratigraphy and late Quaternary shelf history, south-central Monterey Bay, California

Science.gov (United States)

Chin, J.L.; Clifton, H.E.; Mullins, H.T.

1988-01-01

The south-central Monterey Bay shelf is a high-energy, wave-dominated, tectonically active coastal region on the central California continental margin. A prominent feature of this shelf is a sediment lobe off the mouth of the Salinas River that has surface expression. High-resolution seismic-reflection profiles reveal that an angular unconformity (Quaternary?) underlies the entire shelf and separates undeformed strata above it from deformed strata below it. The Salinas River lobe is a convex bulge on the shelf covering an area of approximately 72 km2 in water depths from 10 to 90 m. It reaches a maximum thickness of 35 m about 2.5 km seaward of the river mouth and thins in all directions away from this point. Adjacent shelf areas are characterized by only a thin (2 to 5 m thick) and uniform veneer of sediment. Acoustic stratigraphy of the lobe is complex and is characterized by at least three unconformity-bounded depositional sequences. Acoustically, these sequences are relatively well bedded. Acoustic foresets occur within the intermediate sequence and dip seaward at 0.7?? to 2.0??. Comparison with sedimentary sequences in uplifted onshore Pleistocene marine-terrace deposits of the Monterey Bay area, which were presumably formed in a similar setting under similar processes, suggests that a general interpretation can be formulated for seismic stratigraphic patterns. Depositional sequences are interpreted to represent shallowing-upwards progradational sequences of marine to nonmarine coastal deposits formed during interglacial highstands and/or during early stages of falling sea level. Acoustic foresets within the intermediate sequence are evidence of seaward progradation. Acoustic unconformities that separate depositional sequences are interpreted as having formed largely by shoreface planation and may be the only record of the intervening transgressions. The internal stratigraphy of the Salinas River lobe thus suggests that at least several late Quaternary

Daya Bunuh Hand Sanitizer Berbahan Aktif Alkohol 59% dalam Kemasan Setelah Penggunaan Berulang terhadap Angka Lempeng Total (ALT

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Isnaeni Walidah

2014-03-01

Full Text Available Kebersihan merupakan tahap awal untuk menjaga pola hidup sehat dan terhindar dari penyakit. Pencegahan penyebaran penyakit salah satunya adalah dengan mencuci tangan menggunakan antiseptik hand sanitizer.  Hand sanitizer berbahan aktif alkohol 40 – 80%  mampu menghambat pertumbuhan bakteri. Tetapi pemakaian hand  sanitizer yang tidak langsung habis akan mempengaruhi kualitas hand sanitizer Penggunaan berulang hand sanitizer akan mempengaruhi kemampuan bahan aktif dalam membunuh kuman karena alkohol sebagai bahan aktif pada hand sanitizer memiliki sifat yang mudah menguap. Tujuan penelitian untuk mengetahui daya bunuh hand sanitizer berbahan aktif alkohol 59% dalam kemasan setelah penggunaan berulang terhadap angka lempeng total. Metode  penelitian analitik observasional, menggunakan 10 responden yang diuji angka lempeng total pada tangan setelah penggunaan berulang hand sanitizer dari volume 50 ml sampai dengan ± 25 ml dan dari volume ± 25 ml sampai dengan ± 12,5 ml. Hasil penelitian menunjukkan daya bunuh hand sanitizer berbahan aktif alkohol 59% dalam kemasan setelah penggunaan berulang dari volume 50 ml sampai volume ± 25 ml sebesar  21,38%. Sedangkan daya bunuh hand sanitizer pada penggunaan berulang  hand sanitizer dari volume ± 25 ml sampai dengan volume ± 12,5 ml sebesar 15,83%. Ada pengaruh penggunaan berulang hand sanitizer berbahan aktif alkohol 59% dalam kemasan terhadap jumlah angka lempeng total

EVALUASI JENIS PENGOLAHAN TERHADAP DAYA TERIMA ORGANOLEPTIK PADA TELUR INFERTIL SISA HASIL PENETASAN

OpenAIRE

-, KHAERUNNISA

2015-01-01

2015 Telur yang tidak dapat menetas disebut telur infertil. Telur infertil telur hanya dapat digunakan sebagai konsumsi rumah tangga. Pengolahan telur infertil umumnya adalah dengan direbus, belum banyak penelitian yang menggunakan metode lain seperti didadar dan digoreng. Tujuan penelitian ini adalah untuk mengetahui daya terima organoleptik panelis terhadap telur yang diolah menjadi telur rebus, telur dadar dan telur goreng (ceplok). Penelitian ini menggunakan Rancangan A...

Penelusuran Daya Maksimum Pada Panel Photovoltaic Menggunakan Kontrol Logika Fuzzy Di Kota Surabaya

OpenAIRE

Pebriningtyas, Kurnia Ma'rifatin; Musyafa, Ali; Indriawati, Katherin

2013-01-01

Kebutuhan energi semakin lama semakin meningkat dan sumber energi utama yang digunakan saat ini mempunyai keterbatasan untuk memperbaruinya. Photovoltaic adalah komponen semikonduktor yang berfungsi mengkonversi energi matahari menjadi energi listrik. Cahaya matahari yang termasuk sumber energi primer tersedia sepanjang tahun di semua tempat di permukaan bumi. Tingkat penyinaran yang berbeda-beda menyebabkan daya keluaran dari photovoltaic bervariasi. Karakteristik V-I sel surya adalah nonlin...

Pollution of HCHs, DDTs and PCBs in tidal flat of Hangzhou Bay 2009-2013

Science.gov (United States)

Zhao, Peng; Gong, Wenjie; Mao, Guohua; Li, Jige; Xu, Fenfen; Shi, Jiawei

2016-05-01

The concentration and distribution of three persistent organic pollutants (hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs) and polychlorinated biphenyls (PCBs)) was assessed in tidal flat sediments collected from the south bank of Hangzhou Bay, China from 2009 to 2013. Gas chromatography coupled to triple quadrupole mass spectrometry (GC-MS/MS) was used for analysis, based on United States Environmental Protection Agency methods EPA8080A, EPA8081B, and EPA3550B. The results showed that the levels of HCHs, DDTs and PCBs decreased in the order of DDTs transformer or electronic equipment in the south bank of Hangzhou Bay.

BIOAVAILABILITAS FORTIFIKAN, DAYA CERNA PROTEIN, SERTA KONTRIBUSI GIZI BISKUIT YANG DITAMBAH TEPUNG IKAN GABUS (Ophiocephalus striatus DAN DIFORTIFIKASI SENG DAN BESI

Directory of Open Access Journals (Sweden)

Dewi Kartika Sari

2015-02-01

dilakukan analisis bioavailabilitas Zn dan Fe. Hasil sidik ragam menunjukkan bahwa bioavailabilitas Zn dan Fe tidak berbeda nyata pada berbagai taraf fortifikasi (p>0.05. Biskuit hasil fortifikasi Zn dan Fe sebesar 50% AKG memiliki bioavailabilitas tertinggi, yaitu masing-masing 76,32% dan 41,80%. Formula biskuit ini dipilih untuk dianalisis lebih lanjut, yang meliputi analisis sifat fisik, kimia, dan daya cerna protein. Hasil analisis menunjukkan bahwa biskuit terpilih tersebut lebih renyah daripada biskuit komersial. Dalam 100 g biskuit tersebut terkandung air, abu, protein, lemak, dan karbohidrat berturut-turut sebesar 2,73 g; 2,08 g; 13,34 g; 24,53 g; 57,32 g; serta energi sebesar 503 kkal. Kadar Fe dan Zn biskuit terpilih tersebut adalah 11,7 mg dan 8,83 mg/100 g; dengan daya cerna protein sebesar 78,45%. Biskuit berbasis tepung ikan gabus 15% yang difortifikasi Zn dan Fe sebesar 50% AKG memenuhi standar kualitas biskuit SNI 01-2973-1992. Kontribusi biskuit terpilih terhadap AKG energi, protein, Fe dan Zn berturut-turut adalah 19,48%; 20,51%; 74,44%; 54.44%. Kata kunci: Bioavailabilitas, biskuit ikan gabus, daya cerna protein, fortifikasi

Perbandingan Daya Hambat Larutan Antiseptik Povidone iodine dengan Ekstrak Daun Sirih terhadap Candida albicans secara In Vitro

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Septriana Putri

2015-09-01

Full Text Available Abstrak Candida albicansb (C. albicans adalah salah satu mikroorganisme penyebab masalah kesehatan reproduksi wanita, yaitu keputihan (fluor albus. Penggunaan larutan povidone iodine dan bahan alam seperti ekstrak daun sirih menjadi pilihan masyarakat sebagai pembersih alat kewanitaan. Tujuan penelitian ini adalah untuk membandingkandaya hambat larutan antiseptik povidone iodine dan ekstrak daun sirih terhadap jamur C. albicans secara in vitro. Penelitian dilakukan terhadap lima isolat jamur C. albicans dengan larutan kontrol akuades.Perlakuan terdiri dari povidone iodine, ekstrak daun sirih dengan konsentrasi 5%, 10%, dan 20%.Hasil penelitian menunjukkan bahwa povidone iodine memiliki daya hambat terhadap C. albicans. Ekstrak daun sirih dengan konsentrasi 5% dan 10% tidak memiliki daya hambat terhadap C. albicans, namun ekstrak daun sirih konsentrasi 20% memiliki daya hambat terhadap C. albicans. Analisis statistik dengan uji ANOVA yang dilanjutkan dengan uji Post-hoc menunjukkan perbedaan bermakna antara daya hambat larutan povidone iodine dan ekstrak daun sirih 20% terhadap kontrol(p < 0.05.Larutan povidone iodine memiliki daya hambat dua kali lebih besar terhadap pertumbuhan C. albicans dibandingkan ekstrak daun sirih 20%. Dari penelitian ini dapat disimpulkan bahwa larutan povidone iodine dan ekstrak daun sirih 20% dapat menghambat pertumbuhan jamur C. albicans secara in vitro. Kata kunci: povidone iodine, ekstrak daun sirih, Candida albicansAbstract Candida albicans (C. albicans is one of the frequent causes of  reproductive health problems in women, namely vaginal discharge (fluor albus. The antiseptic solution, povidone iodine, is still an option to overcome vaginal discharge. The use of natural materials such as betel (Piper betle L. leaves extract also become a popular choice as adouche for women. The objective of this study was to compare the inhibitory activity of povidone iodine solution and betel leaf extract against the growth of

Rapid Crustal Uplift at Birch Bay, Washington

Science.gov (United States)

Sherrod, B. L.; Kelsey, H. M.; Blakely, R. J.

2010-12-01

Geomorphology and coastal marsh stratigraphy suggest late Holocene uplift of the shoreline at Birch Bay, located northwest of Bellingham, Washington, during an earthquake on a shallow fault. LiDAR images show a raised, late Holocene shoreline along Birch Bay, with ~1 m of elevation difference between the modern shoreline and the inferred paleoshoreline. Commercial seismic reflection images reveal an anticline in Tertiary and possibly Quaternary deposits underlying Birch Bay. NW-trending magnetic anomalies are likely associated with the Birch Bay anticline and other nearby structures. Taken together, the geophysical data and lidar images suggest uplift of young deposits along a NW-trending blind reverse fault. Stratigraphy from Terrell Creek marsh, located just south of Birch Bay, shows freshwater peat buried by lower intertidal muds, indicating local submergence ~1300 yr BP. Stratigraphy of a 70-cm sediment core from Birch Bay marsh, sitting astride the anticline imaged with seismic reflection data, shows mud buried by detrital peat. One radiocarbon age from the core places the abrupt change from mud to peat prior to 1520-1700 yr BP. We divide fossil diatom assemblages straddling the mud-peat contact at Birch Bay into three zones. The oldest zone consists primarily of intertidal and marine diatoms, dominated by Paralia sulcata, Scoleoneis tumida, Grammataphora oceanica, and Gyrosigma balticum. An intermediate zone, beginning at the sharp contact between mud and overlying peat, consists of a mixture of brackish marsh and freshwater species, dominated by Diploneis interrupta, with lesser amounts of Aulacoseira sp., Pinnularia viridis, Eunotia pectinalis, and Paralia sulcata. A third and youngest zone lies in the upper half of the peat and is dominated by poorly preserved freshwater diatoms, mostly Aulacoseira cf. crassapuntata, Pinnularia viridis, P. maior, Eunotia pectinalis, and E. praerupta. Paleoecological inferences, based on distributions of modern diatoms

PERBEDAAN DAYA HAMBAT PASTA GIGI BERBAHAN HERBAL TERHADAP PERTUMBUHAN STREPTOCOCCUS MUTANS

Directory of Open Access Journals (Sweden)

Susi Susi

2015-09-01

Full Text Available AbstrakKaries gigi dan penyakit periodontal dapat dicegah dengan mengontrol pembentukan plak secara teratur. Penggunaan pasta gigi herbal dapat memberikan efek kimia untuk mengontrol pembentukan plak. Studi terdahulu mendapatkan bahwa pasta gigi herbal dapat mengurangi jumlah bakteri utama pada rongga mulut yaitu Streptococcus mutans. Penelitian ini bertujuan untuk meneliti perbedaan daya hambat beberapa pasta gigi herbal (mengandung siwak, cengkeh, dan daun sirih terhadap pertumbuhan Streptococcus mutans. Metode penelitian adalah eksperimental dengan meletakkan cakram yang sudah direndam dengan pasta gigi ke medium agar darah yang mengandung koloni Streptococcus mutans. Uji daya hambat bakteri dilakukan dengan metode difusi. Terbentuknya zona bening di sekitar koloni bakteri menunjukkan adanya penghambatan pertumbuhan bakteri uji. Hasil uji satu arah ANOVA menunjukkan adanya perbedaan daya hambat yang bermakna antar pasta gigi herbal yang digunakan (p<0.05. Ketiga pasta gigi didapakan memiliki kemampuan antibakteri kuat dengan rata-rata zona hambat 16.075 mm, 13.375 mm dan 11.080 mm. Jadi dapat disimpulkan bahwa pasta gigi herbal mempunyai efek anti bakteri terhadap pertumbuhan Streptococcus mutans dengan efek anti bakteri terkuat di tunjukkan oleh pasta gigi mengandung cengkeh.AbstractDental caries and periodontal disease can be eliminated by regularly control plaque formation. The usage of herbal toothpaste is able to give chemical effect toward plaque control. Previous studies shown that the usage of herbal toothpaste was able to reduce the growth of Streptococcus mutans, the main bacteria in the mouth. The study aimed at investigating the difference of zone of inhibition of several herbal toothpastes (siwak- , cloves- , and betel leaves- contained toward the growth of Streptococcus mutans.This study was experimental research using disc that had been immersed and subsequently put it onto Blood agar medium that contain Streptococcus mutans

SEDRIO/INCORE, an automatic optimal loading pattern search system for PWR NPP reload core using an expert system

International Nuclear Information System (INIS)

Xian Chunyu; Zhang Zongyao

2003-01-01

The expert knowledge library for Daya Bay and Qinshan phase II NPP has been established based on expert knowledge, and the reload core loading pattern heuristic search is performed. The in-core fuel management code system INCORE that has been used in engineering design is employed for neutron calculation, and loading pattern is evaluated by using of cycle length and core radial power peaking factor. The developed system SEDRIO/INCORE has been applied in cycle 4 for unit 2 of Daya Bay NPP and cycle 4 for Phase II in Qinshan NPP. The application demonstrated that the loading patterns obtained by SEDRIO/INCORE system are much better than reference ones from the view of the radial power peak and the cycle length

Penyuluhan Dan Pelatihan Teknologi Pemanfaatan Tanaman Obat Berbasis Kearifan Dan Sumber Daya Alam Lokal Untuk Perbaikan Tingkat Kesehatan Masyarakat Desa Karangsari Wedomartani Sleman

Directory of Open Access Journals (Sweden)

Sri Handayani

2017-02-01

Full Text Available Program Pengabdian kepada Masyarakat ini bertujuan untuk memberikan penyuluhan dan pelatihan teknologi pemanfaatan tanaman obat berbasis kearifan dan sumber daya alam lokal untuk perbaikan tingkat kesehatan masyarakat desa karangsari wedomartani Sleman. Pada akhirnya kegiatan ini akan memberikan wawasan, pengetahuan, kemampuan, dan keterampilan kepada warga terutama para remaja dan  ibu –ibu dalam memanfaatkan bahan alam di lingkungan sekitar sebagai minuman kesehatan. Kegiatan ini dilaksanakan pada tanggal 7 Agustus 2016 dengan peserta kegiatan adalah remaja dan ibu-ibu PKK desa Wedomartani Sleman. Kegiatan ini diawali dengan analisis permasalahan di lapangan, diikuti oleh persiapan rancangan  pelaksanaan program, pelatihan dan sosialisasi program yang dilengkapi alat dan bahan serta sarana dan prasarana penunjang kegiatan. Kegiatan diakhiri dengan sosialisasi serta pengarahan pembuatan minuman kesehatan berbasis sumber daya alam local. Hasil kegiatan ini menunjukkan bahwa 100% para peserta pelatihan merasakan bahwa kegiatan ini bermanfaat dan memiliki kemauan yang kuat untuk belajar hal baru. Dengan pelatihan yang berkelanjutan,diharapkan peserta memiliki pengetahuan dan keterampilan yang dapat digunakan untuk meningkatkan kualitas hidup bahkan menunjang kebutuhan ekonomi.   Kata kunci: Tanaman obat, sumber daya alam local

Perancangan Photovoltaic Stand Alone Sebagai Catu Daya Pada Base Transceiver Station Telekomunikasi Di Pulau Nusa Penida

Directory of Open Access Journals (Sweden)

I P Eka Indrawan

2013-06-01

Full Text Available Salah satu perangkat dalam jaringan komunikasi seluler adalah BTS (Base Transceiver Station. BTS yang ada di pulau Nusa Penida adalah BTS Nusa Penida dengan alamat desa kutampi dengan luas 500 m2. Sistem kelistrikan BTS  Nusa Penida dipasok oleh PLN dan genset,  dimana pada saat terjadi pemadaman energi listrik pada umumnya mempergunakan genset sebagai sumber energi listrik. Penggunaan genset mengakibatkan biaya operasional sangat tinggi, untuk itu diperlukan sumber lain yang lebih efisien. Besarnya potensi insolasi sinar harian matahari di Nusa penida, bisa sebagai  alternatif lain untuk sumber energi listrik dimana energi matahari bisa sebagai energi terbarukan untuk catu daya tambahan di BTS Nusa Penida yang pada akhirnya dapat menjaga  kestabilan suplai energi listrik ke BTS dan akses masyarakat terhadap informasi melalui seluler menjadi tidak terganggu. PV (Photovoltaic merupakan salah satu energi terbarukan yang dapat digunakan sebagai energi terbarukan untuk catu daya tambahan di BTS. Sistem PV yang dikembangkan untuk mensuplai energi listrik di BTS direncanakan sebesar 25%, adalah sistem PV yang hybrid dengan suplai listrik PLN. Besar daya PV yang dibangkitkan untuk mensuplai energi listrik di BTS adalah 9 kWp, yang dihasilkan dari panel PV sebanyak 45 panel dengan kapasitas panel PV adalah 200Wp dan kapasitas baterai yang akan digunakan adalah 3.800 Ah dengan total baterai 16. Analisis kelayakan investasi PV tanpa baterai dan PV dengan baterai yang dilakukan dengan menggunakan NPV, PI dan DPP menunjukkan hasil bahwa investasi PV layak untuk dilaksanakan. Untuk nilai NPV dan PI didapatkan kedua hasil investasi (> 0. Sedangkan untuk DPP didapatkan kedua hasil investasi dihasilkan lebih kecil dari periode umur proyek yang sudah ditetapkan, yaitu selama 25 tahun.

Analisis kesesuaian dan daya dukung lingkungan untuk pengembangan wisata bahari di Pulau Bawean Kabupaten Gresik Provinsi Jaya Timur

Directory of Open Access Journals (Sweden)

Sukandar Sukandar

2017-09-01

Full Text Available Bawean Island has potency as a ecotourism destination in Gresik District, Province of Jaya timur. This island is one of the popular destination for local tourist, and the visitors are increasing over the years; but there was no study on the suitability and carrying capacity of the island for marine ecotourism activities. The purpose of this study was to analysis the suitability and carrying capacity of Bawean Island for marine tourism. The Results of the analysis showed that the area of marine ocotourism in Bawean is Suitable (S1 for marine ecotourism development with a value for leisure travel 88.33%, snorkeling activity was 84.21%; and diving 81.48%. The total value carrying capacity of region was 398 persons/day. Pulau Bawean memiliki potensi sebagai daerah tujuan wisata bahari di kabupaten Gresikproins Jaya timur. Pulau ini telah menjadi tujuan wisata lokal bagi masyarakat Jaya timur dan jumlah kunjungan wisatawan semakin meningkat dari tahun ke tahun. Namu belum ada kajian mengenai kesesuaian dan daya dukung lingkungan di Pulau Bawean sebagai kawsan wisata bahari. Oleh karena itu penelitian ini bertujuan untuk mengkaji kesesuaian dan daya dukung Pulau Bawean sebagai kawasan wisata bahari. Hasil analisis menunjukkan bahwa Pulau Bawean sesuai (S1 untuk dikembangkan sebagai kawasan wisata bahari  dengan nilai untuk wisata rekreasi pantai sebesar 88,33%, wisata snorkeling sebesar 84,21% dan wisata selam sebesar 81,48%. Nilai total daya dukung kawasan sebesar 398 orang/hari.

Kemampuan Daya Hambat Bahan Aktif Beberapa Merek Dagang Hand sanitizer terhadap Pertumbuhan Staphylococcus aureus

OpenAIRE

Putri Srikartika; Netti Suharti; Eliza Anas

2016-01-01

AbstrakHand sanitizer sebagai pembersih tangan antiseptik inovatif saat ini, sering menjadi alternatif pengganti cuci tangan dengan sabun dan air. Mencuci tangan dengan hand sanitizer merupakan salah satu cara memelihara kebersihan tangan agar terhindar dari penyakit  yang disebabkan oleh flora normal di kulit yang berpotensi patogenik seperti bakteri Staphylococcus aureus. Tujuan penelitian ini adalah menilai kemampuan daya hambat beberapa merek dagang hand sanitizer terhadap pertumbuhan Sta...

Daya Dukung Jalur Pendakian Bukit Raya Di Taman Nasional Bukit Baka Raya Kalimantan Barat

OpenAIRE

Toto Aryanto; Hartuti Purnaweni; Tri Retnaningsih Soeprobowati

2017-01-01

ABSTRAK Adanya upaya penyelamatan hutan dan peningkatan nilai manfaatnya, pada saat ini mulai dilakukan pemanfaatan jasa lingkungan, salah satunya melalui kegiatan pariwisata alam. Taman Nasional Bukit Baka Bukit Raya sebagai kawasan konservasi telah dimanfaatkan sebagai kegiatan pariwisata alam dan salah satunya adalah pendakian Bukit Raya. Selain memilki dampak positif, kegiatan pendakian juga memiliki dampak negatif jika tidak memperhatikan daya dukung lingkungan jalur pendakian itu se...

A new power mapping method based on ordinary kriging and determination of optimal detector location strategy

International Nuclear Information System (INIS)

Peng, Xingjie; Wang, Kan; Li, Qing

2014-01-01

Highlights: • A new power mapping method based on Ordinary Kriging (OK) is proposed. • Measurements from DayaBay Unit 1 PWR are used to verify the OK method. • The OK method performs better than the CECOR method. • An optimal neutron detector location strategy based on ordinary kriging and simulated annealing is proposed. - Abstract: The Ordinary Kriging (OK) method is presented that is designed for a core power mapping calculation of pressurized water reactors (PWRs). Measurements from DayaBay Unit 1 PWR are used to verify the accuracy of the OK method. The root mean square (RMS) reconstruction errors are kept at less than 0.35%, and the maximum reconstruction relative errors (RE) are kept at less than 1.02% for the entire operating cycle. The reconstructed assembly power distribution results show that the OK method is fit for core power distribution monitoring. The quality of power distribution obtained by the OK method is partly determined by the neutron detector locations, and the OK method is also applied to solve the optimal neutron detector location problem. The spatially averaged ordinary kriging variance (AOKV) is minimized using simulated annealing, and then, the optimal in-core neutron detector locations are obtained. The result shows that the current neutron detector location of DayaBay Unit 1 reactor is near-optimal

Phytoplankton and nutrient dynamics in Winyah Bay, SC.

Science.gov (United States)

Boneillo, G. E.; Brooks, S. S.; Brown, S. L.; Woodford, K. M.; Wright, C. R.

2016-02-01

Winyah Bay is a coastal plain estuary located in South Carolina that has been classified for a moderate risk of Eutrophication by NOAA. Winyah Bay receives freshwater input from four rivers, the Waccamaw, Sampit, Black, and Pee Dee Rivers. The Waccamaw, Sampit and Black River are blackwater systems that discharge elevated amounts of colored dissolved organic matter. During the summer and fall of 2015, bioassay experiments were performed to simultaneously examine both light and nutrient (nitrogen & phosphate) limitation throughout Winyah Bay. Sampling stations near the mouth of the Waccamaw and Sampit Rivers showed that phytoplankton were light limited in the late summer instead of nutrient limited. These stations were located in the industrialized area of the bay and typically had the highest nutrient concentrations and highest turbidity, with Secchi depths typically less than 0.5 meters. Results indicated that phytoplankton may be nitrogen limited near the mouth of Winyah Bay, where nutrient concentrations and turbidity were observed to be lower than locations further upstream. There was also an observed dissolved oxygen and pH gradient during the summer of 2015. Dissolved oxygen levels less than 4.0 mg/L were routinely observed near the industrialized head of the estuary and corresponded with lower pH values.

A Case History of the Science and Management Collaboration in Understanding Hypoxia Events in Long Bay, South Carolina, USA

Science.gov (United States)

Sanger, Denise; Hernandez, Debra; Libes, Susan; Voulgaris, George; Davis, Braxton; Smith, Erik; Shuford, Rebecca; Porter, Dwayne; Koepfler, Eric; Bennett, Joseph

2010-09-01

Communication of knowledge between the scientific and management communities is a difficult process complicated by the distinctive nature of professional career goals of scientists and decision-makers. This article provides a case history highlighting a collaboration between the science and management communities that resulted from a response to a 2004 hypoxia, or low dissolved oxygen, event in Long Bay, off Myrtle Beach, South Carolina. A working group of scientists and decision-makers was established at the time of the event and has continued to interact to develop a firm understanding of the drivers responsible for hypoxia formation in Long Bay. Several factors were found to be important to ensure that these collaborative efforts were productive: (1) genuine interest in collaboratively working across disciplines to examine a problem; (2) commitment by agency leadership, decision-makers, and researchers to create successful communication mechanisms; (3) respect for each others’ perspectives and an understanding how science and management are performed and that they are not mutually exclusive; (4) networking among researchers and decision-makers to ensure appropriate team members are involved in the process; (5) use of decision-maker input in the formulation of research and monitoring projects; and (6) commitment of resources for facilitation to ensure that researchers and decision-makers are communicating effectively.

A LEOPARD SEAL FROM HOUT BAY, SOUTH AFRICA Division of ...

African Journals Online (AJOL)

On 14 October 1969 a leopard seal Hydrurga leptonyx came ashore alive at Hout Bay, Cape. Province .... 5 mm in diameter: on histological examination these proved to be small nematodes Para- filaroides sp. ... Seals, sea lions and walruses.

PENGARUH DAYA TARIK PESAN IKLAN DI JEJARING SOSIAL TERHADAP MINAT BELI PADA PEREMPUAN (Studi Eksplanatif Pengaruh Daya Tarik Pesan Iklan Zalora Indonesia di Facebook Fanpage terhadap Minat Beli pada Perempuan Dewasa Muda)

OpenAIRE

Melissa, Febe

2013-01-01

Mengkomunikasikan produk dan jasa melalui online (e-commerce) kini banyak dilakukan oleh pemasar. Salah satu media online yang efektif untuk beriklan adalah situs jejaring sosial. Hasil survei Asosiasi Penyelenggara Jasa Internet Indonesia (APJII) menyajikan data bahwa dari total 63 juta pengguna internet pada tahun 2012 (24,23% dari jumlah penduduk Indonesia), sekitar 36 juta melakukan belanja online. Hal tersebut membuktikan daya tarik iklan melalui media internet ternyata cukup efektif. Da...

Particulate carbohydrate in the euphotic zone of the Bay of Bengal

Digital Repository Service at National Institute of Oceanography (India)

Bhosle, N; De; Shirodkar, P.V.; Reddy, C.V.G.

Particulate matter collected from the Bay of Bengal was analysed for carbohydrate and chlorophyll a. The distribution of chlorophyll a was different from that of carbohydrate. Chlorophyll a increased from north to south, whereas carbohydrate levels...

Ferric Iron Precipitation in the Nagahama Bay, Satsuma Iwo-Jima Island, Kagoshima

Science.gov (United States)

Nagata, T.; Kiyokawa, S.; Ikehara, M.; Oguri, K.; Goto, S.; Ito, T.; Yamaguchi, K. E.; Ueshiba, T.

2010-12-01

Satsuma-Iwojima island is active volcanic island and 6 x 3 km in size, located 38km south of Kyushu island, Japan. The reddish brown water along the coast of the Iwo-dake volcano at the center of the island formed by neutralization through mixing of shallow hydrothermal fluid and seawater. The reddish brown water contains reddish ferrihydrite (Fe3+) that is derived from oxidation of Fe2+ from acidic hot spring (Shikaura and Tazaki, 2001). In the Nagahama Bay with its opening to the south, red-colored Fe-rich water is affected by tidal current, but sedimentation of the ferric hydroxide is confirmed to occur in the ocean bottom (Ninomiya and Kiyokawa, 2009). Here we focus other lines of evidence from long term observations and meteorological records as important factor to form thick iron rich sediments. Meteorological and stationary observations: We used weather record in the Satsuma Iwo-jima and cross-checked with stationary observations, which enabled us to observe color changes of the surface of Nagahama Bay. It was made clear that north wind condition in the Nagahama Bay resulted in changes of the color of its surface, from red to green, by intrusion of ocean water coming from outside. Long term temperature monitoring: The temperature of seawater in the Nagahama Bay fluctuated synchronically with the air temperature. But that of hot spring water rather remained constant regardless of the seasonal change. We observed that seawater temperature in the Nagahama Bay is low at high tide and high at low tide, and the rage of temperature change is maximum at the spring tide and minimum at the neap tide. In other words, the amount of discharge of hot spring and that of seawater inflow vary inversely. Core sample: In the Nagahama Bay, iron rich sediments that is more than 1 m thick were identified. The core sample shows lithology as following; upper part, 10-20cm thick, formed loose Fe-rich deposit, lower portion formed alteration of weakly consolidated Fe-rich orange

Case Study: The Myanmar and Bangladesh Maritime Boundary Dispute in the Bay of Bengal and Its Implications for South China Sea Claims

Directory of Open Access Journals (Sweden)

Ravi A. Balaram

2012-01-01

Full Text Available This paper seeks to review the pertinent Myanmar and Bangladesh history in overlapping maritime territorial claims leading up to the September 2011 International Tribunal for the Law of the Sea (ITLOS case: Dispute Concerning Delimitation of the Maritime Boundary Between Bangladesh and Myanmar in the Bay of Bengal. It will dissect the legal proceedings as primary source documents and apply the relevant judgement findings to analyse the implications for the respective countries and for South China Sea maritime boundary disputes. While the judgements of this case set certain legal precedents that may be more easily applied to bilateral disputes, the implications, nevertheless, impinge on multilateral claims as well. To the extent that the Bangladesh-Myanmar ITLOS judgement provides a pathway to third-party, independent, and peaceful resolution to the potentially explosive and escalating tensions in the South China Sea, this paper argues that findings are relevant, but limited.

Summer at the beach: spatio-temporal patterns of white shark occurrence along the inshore areas of False Bay, South Africa.

Science.gov (United States)

Kock, Alison A; Photopoulou, Theoni; Durbach, Ian; Mauff, Katya; Meÿer, Michael; Kotze, Deon; Griffiths, Charles L; O'Riain, M Justin

2018-01-01

Understanding white shark ( Carcharodon carcharias ) habitat use in coastal areas adjacent to large cities, is an important step when formulating potential solutions to the conservation conflict that exists between humans and large predatory sharks. In this study, we present the findings of a 2.5-year study of white shark occurrence and movement patterns adjacent to the City of Cape Town in False Bay, South Africa, with a focus on spring and summer months. Fifty-one white sharks were monitored annually at three offshore and twelve inshore sites by VR2 acoustic receivers, over 975 days from 1 May 2005 to 31 December 2007. Occurrence patterns at inshore sites during spring and summer were analysed using a generalized additive mixed model (GAMM) with a spatial term (longitude, latitude), time of day and year included as explanatory variables for site use. We found that sharks occurred more frequently at inshore sites along the northern and northwestern shores, compared to the rest of the bay, and they transitioned most frequently between four adjacent beach sites that encompass the most popular recreational water use areas in Cape Town. There was significant diel variation, with higher shark occurrence around midday, and a peak in shark occurrence in 2005, when human-shark interactions also peaked. However, we found no effect of shark size on occurrence patterns at inshore sites. White sharks showed the highest levels of occurrence at specific inshore sites between Muizenberg and Strandfontein beach, and thus inclusion of these sites within False Bay's marine protected area (MPA) network or recognition as Ecological or Biological Significant Areas (EBSAs) should be a future consideration. These insights into white shark habitat use at inshore sites in False Bay are important for successfully applying the principles of marine spatial planning (MSP) and for making science-based policy decisions. Furthermore, this information can be used to reduce potential shark

The discussion on the qualitative and quantitative evaluation methods for safety culture

International Nuclear Information System (INIS)

Gao Kefu

2005-01-01

The fundamental methods for safely culture evaluation are described. Combining with the practice of the quantitative evaluation of safety culture in Daya Bay NPP, the quantitative evaluation method for safety culture are discussed. (author)

An aerial radiological survey of the South Texas Project Electric Generating Station and surrounding area, Bay City, Texas

International Nuclear Information System (INIS)

Thompson, J.M.

1988-12-01

An aerial radiological survey was conducted over the South Texas Project Electric Generating Station (STPEGS) near Bay City, Texas, during the period 25 March to 4 April 1988. The purpose of the 259-square-kilometer (100-square-mile) survey was to document the terrestrial gamma environment of the plant and surrounding area. An exposure rate contour map at 1 meter above ground level (AGL) was constructed from the gamma data and overlaid on an aerial photograph and map of the area. Exposure rates were observed up to 10μR/h over land. No areas of enhanced exposure rates were observed. Ground-based exposure rate measurements and soil samples were obtained to support the aerial data. Oblique aerial photographs of the plant were also acquired during the survey. 9 refs., 4 figs., 1 tab

Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California: 2014

Science.gov (United States)

Cain, Daniel J.; Thompson, Janet K.; Crauder, Jeff; Parcheso, Francis; Stewart, Robin; Kleckner, Amy E.; Dyke, Jessica; Hornberger, Michelle I.; Luoma, Samuel N.

2015-01-01

Trace-metal concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer (km) south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay, Calif. This report includes the data collected by U.S. Geological Survey (USGS) scientists for the period January 2014 to December 2014. These append to long-term datasets extending back to 1974, and serve as the basis for the City of Palo Alto’s Near-Field Receiving Water Monitoring Program, initiated in 1994. 

Tumor prevalence and biomarkers of genotoxicity in brown bullhead (Ameiurus nebulosus) in Chesapeake Bay tributaries

Energy Technology Data Exchange (ETDEWEB)

Pinkney, Alfred E., E-mail: Fred_Pinkney@fws.gov [U.S. Fish and Wildlife Service, Chesapeake Bay Field Office, 177 Admiral Cochrane Drive, Annapolis, MD 21401 (United States); Harshbarger, John C., E-mail: jcharshbarger@verizon.net [Department of Pathology, George Washington University Medical Center, 2300 I Street, NW, Washington, DC 20037 (United States); Karouna-Renier, Natalie K., E-mail: nkarouna@usgs.gov [U.S. Geological Survey, Patuxent Wildlife Research Center, BARC, Bldg. 308, Beltsville, MD 20705 (United States); Jenko, Kathryn [U.S. Geological Survey, Patuxent Wildlife Research Center, BARC, Bldg. 308, Beltsville, MD 20705 (United States); Balk, Lennart, E-mail: lennart.balk@itm.su.se [Department of Applied Environmental Science (ITM), Stockholm University SE-106 91, Stockholm (Sweden); Skarphe Latin-Small-Letter-Eth insdottir, Halldora; Liewenborg, Birgitta [Department of Applied Environmental Science (ITM), Stockholm University SE-106 91, Stockholm (Sweden); Rutter, Michael A., E-mail: mar36@psu.edu [Department of Mathematics, Penn State Erie, The Behrend College, 5091 Station Road, Erie, PA 16563 (United States)

2011-12-01

We surveyed four Chesapeake Bay tributaries for skin and liver tumors in brown bullhead (Ameiurus nebulosus). We focused on the South River, where the highest skin tumor prevalence (53%) in the Bay watershed had been reported. The objectives were to 1) compare tumor prevalence with nearby rivers (Severn and Rhode) and a more remote river (Choptank); 2) investigate associations between tumor prevalence and polynuclear aromatic hydrocarbons (PAHs) and alkylating agents; and 3) statistically analyze Chesapeake Bay bullhead tumor data from 1992 through 2008. All four South River collections exhibited high skin tumor prevalence (19% to 58%), whereas skin tumor prevalence was 2%, 10%, and 52% in the three Severn collections; 0% and 2% in the Choptank collections; and 5.6% in the Rhode collection. Liver tumor prevalence was 0% to 6% in all but one South River collection (20%) and 0% to 6% in the three other rivers. In a subset of samples, PAH-like biliary metabolites and {sup 32}P-DNA adducts were used as biomarkers of exposure and response to polycyclic aromatic compounds (PACs). Adducts from alkylating agents were detected as O6-methyl-2 Prime -deoxyguanosine (O6Me-dG) and O6-ethyl-2 Prime -deoxyguanosine (O6Et-dG) modified DNA. Bullheads from the contaminated Anacostia River were used as a positive control for DNA adducts. {sup 32}P-DNA adduct concentrations were significantly higher in Anacostia bullhead livers compared with the other rivers. We identified alkyl DNA adducts in bullhead livers from the South and Anacostia, but not the Choptank. Neither the PAH-like bile metabolite data, sediment PAH data, nor the DNA adduct data suggest an association between liver or skin tumor prevalence and exposure to PACs or alkylating agents in the South, Choptank, Severn, or Rhode rivers. Logistic regression analysis of the Chesapeake Bay database revealed that sex and length were significant covariates for liver tumors and length was a significant covariate for skin tumors

Tumor prevalence and biomarkers of genotoxicity in brown bullhead (Ameiurus nebulosus) in Chesapeake Bay tributaries

International Nuclear Information System (INIS)

Pinkney, Alfred E.; Harshbarger, John C.; Karouna-Renier, Natalie K.; Jenko, Kathryn; Balk, Lennart; Skarphéðinsdóttir, Halldóra; Liewenborg, Birgitta; Rutter, Michael A.

2011-01-01

We surveyed four Chesapeake Bay tributaries for skin and liver tumors in brown bullhead (Ameiurus nebulosus). We focused on the South River, where the highest skin tumor prevalence (53%) in the Bay watershed had been reported. The objectives were to 1) compare tumor prevalence with nearby rivers (Severn and Rhode) and a more remote river (Choptank); 2) investigate associations between tumor prevalence and polynuclear aromatic hydrocarbons (PAHs) and alkylating agents; and 3) statistically analyze Chesapeake Bay bullhead tumor data from 1992 through 2008. All four South River collections exhibited high skin tumor prevalence (19% to 58%), whereas skin tumor prevalence was 2%, 10%, and 52% in the three Severn collections; 0% and 2% in the Choptank collections; and 5.6% in the Rhode collection. Liver tumor prevalence was 0% to 6% in all but one South River collection (20%) and 0% to 6% in the three other rivers. In a subset of samples, PAH-like biliary metabolites and 32 P-DNA adducts were used as biomarkers of exposure and response to polycyclic aromatic compounds (PACs). Adducts from alkylating agents were detected as O6-methyl-2′-deoxyguanosine (O6Me-dG) and O6-ethyl-2′-deoxyguanosine (O6Et-dG) modified DNA. Bullheads from the contaminated Anacostia River were used as a positive control for DNA adducts. 32 P-DNA adduct concentrations were significantly higher in Anacostia bullhead livers compared with the other rivers. We identified alkyl DNA adducts in bullhead livers from the South and Anacostia, but not the Choptank. Neither the PAH-like bile metabolite data, sediment PAH data, nor the DNA adduct data suggest an association between liver or skin tumor prevalence and exposure to PACs or alkylating agents in the South, Choptank, Severn, or Rhode rivers. Logistic regression analysis of the Chesapeake Bay database revealed that sex and length were significant covariates for liver tumors and length was a significant covariate for skin tumors. - Highlights: ► We

A new ceramic assemblage from Caution Bay, south coast of mainland PNG : the linear shell edge-impressed tradition from Bogi 1

International Nuclear Information System (INIS)

David, B.; McNiven, I.J.; Leavesley, M.; Barker, B.; Mandui, H.; Richards, T.; Skelly, R.

2012-01-01

This paper reports on the ceramics from Squares A and B of Bogi 1, a newly excavated site at Caution Bay, south coast of mainland Papua New Guinea. A dense cultural horizon dated from c. 2150 to c. 2100 calBP and preceded by earlier cultural deposits contains previously undescribed ceramics of limited decorative variability almost exclusively focused on Anadara shell edge impressions below finger-grooved lips, which we term the Linear Shell Edge-Impressed Tradition. Here we present the chrono-stratigraphic evidence for this decorative tradition and how it relates to previously described shell-impressed ceramics from the broader region. (author). 16 refs., 9 figs., 3 tabs.

Travel to Food : Transportation Barriers for the Food Insecure in Tampa Bay

Science.gov (United States)

2017-09-01

In partnership with the Center for Urban Transportation Research (CUTR) at the University of South Florida (USF), the Transportation Innovation Group informed practical transportation solutions aimed at improved food access in Tampa Bay (Hillsborough...

Antibiotics in the coastal environment of the Hailing Bay region, South China Sea: Spatial distribution, source analysis and ecological risks.

Science.gov (United States)

Chen, Hui; Liu, Shan; Xu, Xiang-Rong; Zhou, Guang-Jie; Liu, Shuang-Shuang; Yue, Wei-Zhong; Sun, Kai-Feng; Ying, Guang-Guo

2015-06-15

In this study, the occurrence and spatial distribution of 38 antibiotics in surface water and sediment samples of the Hailing Bay region, South China Sea, were investigated. Twenty-one, 16 and 15 of 38 antibiotics were detected with the concentrations ranging from antibiotics in the water phase were correlated positively with chemical oxygen demand and nitrate. The source analysis indicated that untreated domestic sewage was the primary source of antibiotics in the study region. Fluoroquinolones showed strong sorption capacity onto sediments due to their high pseudo-partitioning coefficients. Risk assessment indicated that oxytetracycline, norfloxacin and erythromycin-H2O posed high risks to aquatic organisms. Copyright © 2015 Elsevier Ltd. All rights reserved.

Uji Daya Hambat Sabun Cair Cuci Tangan pada Restoran Waralaba di Kota Padang Terhadap Pertumbuhan Bakteri Escherichia coli dan Staphylococcus aureus Secara In Vitro

Directory of Open Access Journals (Sweden)

Anisha Fazlisia

2014-09-01

Full Text Available AbstrakSabun cair cuci tangan terbukti dapat menghambat pertumbuhan bakteri Escherichia coli dan Staphylococcus aureus. Sebagian besar restoran waralaba di Kota Padang menyediakan sabun cair cuci tangan yang telah diencerkan. Proses pengenceran mengubah kemampuan sabun dalam menghambat pertumbuhan bakteri. Penelitian bertujuan untuk menguji daya hambat sabun cair cuci tangan pada restoran waralaba di Kota Padang terhadap pertumbuhan E. coli dan S. aureus. Sampel diambil dari empat restoran waralaba dan diuji dengan metode difusi. Hasil penelitian menunjukkan bahwa keempat sabun dapat menghambat pertumbuhan S. aureus namun hanya sebagian yang memiliki daya hambat terhadap E. coli. Median daya hambat pertumbuhan E. coli dan S. aureus pada setiap periode yaitu 0, 7.4, 7.3 dan 0, 26.1, 23.3. Nilai maksimum daya hambat pertumbuhan E.coli dalam tiga periode yaitu 19.5, 35.4, 27.1 dan 20.7, 40.2, 36.6 untukS. aureus. Daya hambat minimum terhadap kedua bakteri adalah 0.00. Hal tersebut dapat dipengaruhi komposisi dan konsentrasi antiseptik, antibakteri, pH sabun, pengenceran dan struktur dinding sel bakteri. Disimpulkan bahwa sabun cair cuci tangan yang diuji memiliki kemampuan lebih besar dalam menghambat pertumbuhan S.aureus daripada E.coli.Kata kunci: sabun cair cuci tangan, restoran, pengenceran, uji daya hambat, pertumbuhan bakteriAbstractLiquid hand soaps proved to inhibit Escherichia coli and Staphylococcus aureus bacterial growth. In Padang, most of Restaurants provide diluted liquid hand soaps. Research found dilution changed soap ability to inhibit bacterial growth. The purpose of this study was to examine the ability of Padang City Restaurants’ liquid hand soaps to inhibit E. coli and S. aureus bacterial growth. The samples were taken from four restaurants and examined by using diffusion method. The results showed all of them could inhibit S. aureus but only a half inhibited Escherichia coli bacterial growth. Median for E. coli and S

Development and application of project management computer system in nuclear power station

International Nuclear Information System (INIS)

Chen Junpu

2000-01-01

According to the experiences in the construction of Daya Bay and Lingao nuclear power plants presents, the necessity to use the computers for management and their application in the nuclear power engineering project are explained

Spatial patterning of water quality in Biscayne Bay, Florida as a function of land use and water management.

Science.gov (United States)

Caccia, Valentina G; Boyer, Joseph N

2005-11-01

An objective classification analysis was performed on a water quality data set from 25 sites collected monthly during 1994-2003. The water quality parameters measured included: TN, TON, DIN, NH4+, NO3-, NO2-, TP, SRP, TN:TP ratio, TOC, DO, CHL A, turbidity, salinity and temperature. Based on this spatial analysis, Biscayne Bay was divided into five zones having similar water quality characteristics. A robust nutrient gradient, driven mostly by dissolved inorganic nitrogen, from alongshore to offshore in the main Bay, was a large determinant in the spatial clustering. Two of these zones (Alongshore and Inshore) were heavily influenced by freshwater input from four canals which drain the South Dade agricultural area, Black Point Landfill, and sewage treatment plant. The North Bay zone, with high turbidity, phytoplankton biomass, total phosphorus, and low DO, was affected by runoff from five canals, the Munisport Landfill, and the urban landscape. The South Bay zone, an embayment surrounded by mangrove wetlands with little urban development, was high in dissolved organic constituents but low in inorganic nutrients. The Main Bay was the area most influenced by water exchange with the Atlantic Ocean and showed the lowest nutrient concentrations. The water quality in Biscayne Bay is therefore highly dependent of the land use and influence from the watershed.

DAYA SAING DAN PERMINTAAN EKSPOR PRODUK BIOFARMAKA INDONESIA DI NEGARA TUJUAN UTAMA PERIODE 2003-2012

Directory of Open Access Journals (Sweden)

Irgandhini Agra Kanaya

2015-03-01

Full Text Available The world demand of herbal medicine is mounting. The more intensive effort is surely required in order to meet the supply of raw materials of medicinal products needed. The purposes of this research are to observe the competitiveness between countries in the world toward the provision of export products and also to analyze the affecting factors of export demand of medicinal products to the destination countries. The methods of analysis used in this research are Revealed Comparative Advantage (RCA, Export Product Dynamics (EPD, and Gravity Model. The analyzed period was an average of 2003 until 2012. The results of this research conclude that Indonesia has a good competitiveness in the commodity of turmeric and gaharu wood compared to the competitor countries based on the analysis of RCA and EPD, with the position of competitiveness of "Lost Oppportunity". Based on Gravity Model, the factors affecting the demand of medicinal products are Real GDP, Real Exchange Rate, Population, and Economic Distance. All those variables significantly influence the dependent variable and are consistent with the hypothesis.Keywords: export, EPD, gavity model, medical product, RCAABSTRAKPermintaan obat herbal dunia semakin meningkat, tentunya diperlukan usaha yang lebih intensif agar pasokan bahan baku produk biofarmaka dapat terpenuhi. Penelitian ini bertujuan melihat bagaimana daya saing yang terjadi antardua negara di dunia terhadap penyediaan produk ekspor serta menganalisis faktor yang memengaruhi permintaan ekspor produk biofarmaka dunia terhadap negara tujuan utama. Metode analisis yang digunakan dalam penenelitian ini adalah Revealed Comparative Advantage (RCA, Export Product Dynamics (EPD dan Gravity Model. Periode waktu yang diteliti adalah rata-rata tahun 2003 hingga 2012. Hasil penelitian menyimpulkan bahwa Indonesia memiliki daya saing yang baik terhadap komoditi kunyit dan kayu gaharu apabila dibandingkan dengan negara pesaing berdasarkan analisis RCA

Apostle Battery Table Bay Fire Command | Croock | Scientia Militaria ...

African Journals Online (AJOL)

Scientia Militaria: South African Journal of Military Studies. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 20, No 3 (1990) >. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register. Apostle Battery Table Bay Fire ...

Parameterization of surface irradiance and primary production in Århus Bay, SW Kattegat, Baltic Sea

DEFF Research Database (Denmark)

Lund-Hansen, Lars Chresten; Sørensen, Helene Munk

2009-01-01

. The study is based on a one year long time-series of PAR, CTD-casts (n = 45), and primary production measurements (n = 24) from Århus Bay (56°09′ N; 10°20′ E), south west Kattegat. Results showed a high and positive correlation between observed and calculated primary production in the bay, as based...

Nelson River and Hudson Bay

Science.gov (United States)

2002-01-01

Rivers that empty into large bodies of water can have a significant impact on the thawing of nearshore winter ice. This true-color Moderate Resolution Imaging Spectroradiometer (MODIS) image from May 18, 2001, shows the Nelson River emptying spring runoff from the Manitoba province to the south into the southwestern corner of Canada's Hudson Bay. The warmer waters from more southern latitudes hasten melting of ice near the shore, though some still remained, perhaps because in shallow coastal waters, the ice could have been anchored to the bottom. High volumes of sediment in the runoff turned the inflow brown, and the rim of the retreating ice has taken on a dirty appearance even far to the east of the river's entrance into the Bay. The sediment would have further hastened the melting of the ice because its darker color would have absorbed more solar radiation than cleaner, whiter ice. Image courtesy Jacques Descloitres, MODIS Land Rapid Response Team at NASA GSFC

Integrating science and resource management in Tampa Bay, Florida

Science.gov (United States)

Yates, Kimberly K.; Greening, Holly; Morrison, Gerold

2011-01-01

Tampa Bay is recognized internationally for its remarkable progress towards recovery since it was pronounced "dead" in the late 1970s. Due to significant efforts by local governments, industries and private citizens throughout the watershed, water clarity in Tampa Bay is now equal to what it was in 1950, when population in the watershed was less than one-quarter of what it is today. Seagrass extent has increased by more than 8,000 acres since the mid-1980s, and fish and wildlife populations are increasing. Central to this successful turn-around has been the Tampa Bay resource management community's long-term commitment to development and implementation of strong science-based management strategies. Research institutions and agencies, including Eckerd College, the Florida Wildlife Commission Fish and Wildlife Research Institute, Mote Marine Laboratory, National Oceanic and Atmospheric Administration, the Southwest Florida Water Management District, University of South Florida, U.S. Environmental Protection Agency, U.S. Geological Survey, local and State governments, and private companies contribute significantly to the scientific basis of our understanding of Tampa Bay's structure and ecological function. Resource management agencies, including the Tampa Bay Regional Planning Council's Agency on Bay Management, the Southwest Florida Water Management District's Surface Water Improvement and Management Program, and the Tampa Bay Estuary Program, depend upon this scientific basis to develop and implement regional adaptive management programs. The importance of integrating science with management has become fully recognized by scientists and managers throughout the region, State and Nation. Scientific studies conducted in Tampa Bay over the past 10–15 years are increasingly diverse and complex, and resource management programs reflect our increased knowledge of geology, hydrology and hydrodynamics, ecology and restoration techniques. However, a synthesis of this

Tectonic framework of the Hanoe Bay area, southern Baltic Sea

International Nuclear Information System (INIS)

Wannaes, K.O.; Floden, T.

1994-06-01

The tectonic framework and the general geologic development of the Hanoe Bay, from the Scanian coast in the west to south of Oeland in the east, has been investigated by means of reflection seismic methods. The Hanoe Bay is in this paper subdivided into four areas of different geologic settings. These are: 1) The Hanoe Bay slope, which forms a southward dipping continuation of the rigid Blekinge coastal plain. 2) The eastward dipping Kalmarsund Slope, which southwards from Oeland forms the western part of the Paleozoic Baltic Syneclise. 3) The Mesozoic Hanoe Bay Halfgraben, which forms the central and southern parts of the Hanoe Bay. The ongoing subsidence of the Halfgraben is estimated to be in the order of 20-60 m during the Quaternary. 4) The Yoldia Structural Element, which forms a deformed, tilted and possibly rotated block of Paleozoic bedrock located east of the Hanoe Bay Halfgraben. Two tectonic phases dominate the post-Paleozoic development of the Hanoe Bay, these are: 1) The Early Kimmerian phase, which initiated subsidence and reactivated older faults. 2) The Late Cretaceous phase, which is the main subsidence phase of the Hanoe Bay Halfgraben. The tectonic fault pattern of the Hanoe Bay is dominated by three directions, i.e. NW-SE, NE-SW and WNW-ESE. The two main tectonic elements of the area are the Kullen-Christiansoe Ridge System (NW-SE) and the Bornholm Gat Tectonic Zone (NE-SW). Sinistral strike-slip movements in order of 2-3 km are interpreted to have occurred along the Bornholm Gat Tectonic Zone during the late Cretaceous. 20 refs, 19 figs

33 CFR 110.95 - Newport Bay Harbor, Calif.

Science.gov (United States)

2010-07-01

... 268° from Lido Isle East Light 2, this line being the northwest line of the main fairway; west of the... of a line bearing 268° from Newport Bay Channel Light 11, this line being the south line of the main... Channel Light 11, this line being the southerly line of the main fairway. Note: This area is reserved for...

Recent results from Daya Bay experiment

Directory of Open Access Journals (Sweden)

Naumov Dmitry V.

2015-01-01

Full Text Available This manuscript is a short summary of my talk given at ICNFP2014 Conference. Here we report on new results of sin2 2θ13 and Δm2ee measurements, search for the sterile neutrino within 10−3 eV2 < Δm241 < 0.1 eV2 domain and precise measurement of the reactor absolute antineutrino flux.

Storm-induced inner-continental shelf circulation and sediment transport: Long Bay, South Carolina

Science.gov (United States)

Warner, John C.; Armstrong, Brandy N.; Sylvester, Charlene S.; Voulgaris, George; Nelson, Tim; Schwab, William C.; Denny, Jane F.

2012-01-01

Long Bay is a sediment-starved, arcuate embayment located along the US East Coast connecting both South and North Carolina. In this region the rates and pathways of sediment transport are important because they determine the availability of sediments for beach nourishment, seafloor habitat, and navigation. The impact of storms on sediment transport magnitude and direction were investigated during the period October 2003–April 2004 using bottom mounted flow meters, acoustic backscatter sensors and rotary sonars deployed at eight sites offshore of Myrtle Beach, SC, to measure currents, water levels, surface waves, salinity, temperature, suspended sediment concentrations, and bedform morphology. Measurements identify that sediment mobility is caused by waves and wind driven currents from three predominant types of storm patterns that pass through this region: (1) cold fronts, (2) warm fronts and (3) low-pressure storms. The passage of a cold front is accompanied by a rapid change in wind direction from primarily northeastward to southwestward. The passage of a warm front is accompanied by an opposite change in wind direction from mainly southwestward to northeastward. Low-pressure systems passing offshore are accompanied by a change in wind direction from southwestward to southeastward as the offshore storm moves from south to north.During the passage of cold fronts more sediment is transported when winds are northeastward and directed onshore than when the winds are directed offshore, creating a net sediment flux to the north–east. Likewise, even though the warm front has an opposite wind pattern, net sediment flux is typically to the north–east due to the larger fetch when the winds are northeastward and directed onshore. During the passage of low-pressure systems strong winds, waves, and currents to the south are sustained creating a net sediment flux southwestward. During the 3-month deployment a total of 8 cold fronts, 10 warm fronts, and 10 low

AoA Region: South Asian Seas

Digital Repository Service at National Institute of Oceanography (India)

Naqvi, S.W.A.

is an environmental assessment for the entire Bay of Bengal region (BOBP/ REP/67) prepared for the Swedish Centre for Coastal Development and Management of Aquatic Resources by Holmgren (1994) under the Bay of Bengal Programme. This assessment provides information...-based activities (UNEP 2001) includes information on the South Asian Seas region. Under the Environment Management-Capacity Building Project implemented by the Indian Ministry of Environment and Forests with funding support from the World Bank, the Integrated...

Relationships between precipitation and surface water chemistry in three Carolina bays

International Nuclear Information System (INIS)

Monegue, R.L.; Jagoe, C.H.

1995-01-01

Carolina Bays are shallow freshwater wetlands, the only naturally occurring lentic systems on the southeastern coastal plain. Bays are breeding sites for many amphibian species, but data on precipitation/surface water relationships and long-term chemical trends are lacking. Such data are essential to interpret major fluctuations in amphibian populations. Surface water and bulk precipitation were sampled bi-weekly for over two years at three bays along a 25 km transect on the Savannah River Site in South Carolina. Precipitation chemistry was similar at all sites; average pH was 4.56, and the major ions were H + (30.8 % of total), and SO 4 (50.3% of total). H + was positively correlated with SO 4 , suggesting the importance of anthropogenic acids to precipitation chemistry. All three bays, Rainbow Bay (RB), Thunder Bay (TB), and Ellenton Bay (EB), contained soft (specific conductivity 5--90 microS/cm), acidic water (pH 4.0--5.9) with DOM from 4--40 mg/L. The major cation for RB, TB, and EB, respectively, was: Mg (30.8 % of total); Na (27% of total); and Ca (34.2% of total). DOM was the major anion for all bays, and SO 4 represented 13 to 28 % of total anions. H + was not correlated to DOM or SO, in RB; H + was positively correlated to DOM and SO 4 in TB, and negatively correlated to DOM and SO 4 in EB. Different biogeochemical processes probably control pH and other chemical variables in each bay. While surface water H + was not directly correlated with precipitation H + , NO 3 , or SO 4 , precipitation and shallow groundwater are dominant water sources for these bays. Atmospheric inputs of anthropogenic acids and other chemicals are important factors influencing bay chemistry

Appearance and water quality of turbidity plumes produced by dredging in Tampa Bay, Florida

Science.gov (United States)

Goodwin, Carl R.; Michaelis, D.M.

1984-01-01

near the mouth of Tampa Bay produced a two-part or separated plume. Flow acceleration contracted the width of the visible plume, and subsequent flow deceleration caused plume expansion. The two wide segments of the plume appeared to be separated from each other because of the intervening narrow part. Waters ambient to the plumes were tested for clarity in two sections of Tampa Bay. Ambient-water transparency in Tampa Bay was about three times greater near its mouth, in South Tampa Bay, than near its head, in Hillsborough Bay. Two other measures of water clarity, turbidity and suspended solids, showed no statistically significant difference between the two areas, however, indicating that transparency is a more sensitive measure of ambient water clarity than either turbidity or suspended solids. The nutrient and metal concentrations for samples of plume water and water ambient to the plumes in Tampa Bay were statistically equivalent, indicating no detectable changes due to dredging. The concentrations of dissolved copper, lead, mercury, and total mercury, however, were greater in plumes in Hillsborough Bay than in South Tampa Bay. In Hillsborough Bay, six occurrences of the herbicide 2,4-D at concentrations near the detection limit, 0.01 to 0.05 micrograms per liter, were unrelated to dredging activity. Data recorded for longer than the study period indicate that from 1976 through 1979 few average turbidity characteristics in South Tampa and Hillsborough Bays can be directly attributed to dredging operation

Influence of net freshwater supply on salinity in Florida Bay

Science.gov (United States)

Nuttle, William K.; Fourqurean, James W.; Cosby, Bernard J.; Zieman, Joseph C.; Robblee, Michael B.

2000-01-01

An annual water budget for Florida Bay, the large, seasonally hypersaline estuary in the Everglades National Park, was constructed using physically based models and long‐term (31 years) data on salinity, hydrology, and climate. Effects of seasonal and interannual variations of the net freshwater supply (runoff plus rainfall minus evaporation) on salinity variation within the bay were also examined. Particular attention was paid to the effects of runoff, which are the focus of ambitious plans to restore and conserve the Florida Bay ecosystem. From 1965 to 1995 the annual runoff from the Everglades into the bay was less than one tenth of the annual direct rainfall onto the bay, while estimated annual evaporation slightly exceeded annual rainfall. The average net freshwater supply to the bay over a year was thus approximately zero, and interannual variations in salinity appeared to be affected primarily by interannual fluctuations in rainfall. At the annual scale, runoff apparently had little effect on the bay as a whole during this period. On a seasonal basis, variations in rainfall, evaporation, and runoff were not in phase, and the net freshwater supply to the bay varied between positive and negative values, contributing to a strong seasonal pattern in salinity, especially in regions of the bay relatively isolated from exchanges with the Gulf of Mexico and Atlantic Ocean. Changes in runoff could have a greater effect on salinity in the bay if the seasonal patterns of rainfall and evaporation and the timing of the runoff are considered. One model was also used to simulate spatial and temporal patterns of salinity responses expected to result from changes in net freshwater supply. Simulations in which runoff was increased by a factor of 2 (but with no change in spatial pattern) indicated that increased runoff will lower salinity values in eastern Florida Bay, increase the variability of salinity in the South Region, but have little effect on salinity in the Central

Observations on inshore and pelagic Dolphins on the South-Eastern Cape coast of South Africa

Directory of Open Access Journals (Sweden)

G. S Saayman

1972-12-01

Full Text Available The occurrence, size and seaward distribution of schools of inshore and pelagic dolphins is described for three study areas on the south-eastern Cape coast (Algoa Bay; the Tsitsikama Coastal National Park and Plettenberg Bay. Inshore dolphins {Tursiops and Sousa sp. frequented the coastline in relatively small schools whereas pelagic dolphins {Delphinus delphis and Stenella caeruleoalba occurred in very large schools far out to sea. Different ecological zones were used by Sousa for feeding and for social behaviour and maintenance activities. The frequency of occurrence of Sousa at Plettenberg Bay was not affected by seasonal fluctuations in sea surface temperatures. The role of dolphins as predators and their implication in the regulation of the ecosystem of the Tsitsikama Coastal National Park is discussed.

Perbedaan Daya Hambat Ekstrak Daun Sirih Hijau ( Piper betle L. dan Daun Sirih Merah ( Piper crocatum Ruiz & Pav terhadap Pertumbuhan Escherichia coli

Directory of Open Access Journals (Sweden)

Tristika Aulia Syahrinastiti

2015-05-01

Full Text Available AbstrakSirih hijau (Piper betle L. dan sirih merah (Piper crocatum Ruiz & Pav dipercaya memiliki khasiat mencegah penyakit infeksi saluran kemih yang disebabkan oleh Escherichia coli. Tujuan penelitian ini adalah untuk menjelaskan perbedaan daya hambat ekstrak daun sirih hijaudan daun sirih merah terhadap pertumbuhan Escherichia coli. Jenis penelitian ini adalah eksperimental dengan desain post test only control group. Penelitian dilakukan di laboratorium mikrobiologi Fakultas Kedokteran Universitas Andalas. Hasil penelitian adalah: 1. Efek daya hambat ekstrak daun sirih merah pada konsentrasi 2,5%, 5%, 7,5%, dan 10%, yaitu 0,6cm, 1,1cm, 1,2cm, dan 1,2cm; 2. Ekstrak daun sirih hijau tidak memiliki efek daya hambat pada konsentrasi 2,5%, 5%, 7,5%, dan 10%. Kesimpulan eksperimen ini adalah ekstrak daun sirih merah memiliki efek daya hambat lebih baik daripada ekstrak daun sirih hijau.Kata kunci: ekstrak daun sirih hijau, ekstrak daun sirih merah, escherichia coli, daerah bebas hambat AbstractGreen betel (Piper betle L. and red betel (Piper crocatum Ruiz & Pav are trusted of possessing an efficacy of preventing urinary tract infection caused by Eschericia coli. The objective of this study was to explain the difference of inhibition zones between the green betel and the red betel towards the growth of Eschericia coli. The type of this research was experimental study with post test only control group design. This research was carried out in Microbiology Laboratory, Faculty of Medicine Andalas University.The results of this research were: 1.The inhibition zones of red betel extract in concentration of 2.5%, 5%, 7.5%, and 10% were 0.6 cm, 1.1 cm, 1.2 cm, and 1.2 cm; 2. The extract of green betel had none of inhibition zones in concentration of of 2.5%, 5%, 7.5%, and 10%. In conclusion, the red betel extract has better inhibition zones than the green betel extrac.Keywords: green betel extract, red betel extract, eschericia coli, inhibition zone

Mixed layer variability and chlorophyll a biomass in the Bay of Bengal.

Digital Repository Service at National Institute of Oceanography (India)

Narvekar, J.; PrasannaKumar, S.

, the chlorophyll biomass decreases rapidly due to reduction in sunlight by suspended sediment. In the south, advection of high salinity waters from the Arabian Sea and westward propagating Rossby waves from the eastern Bay of Bengal led to the formation of deep...

PENGEMBANGAN PENCEGAHAN SERANGAN DISTRIBUTED DENIAL OF SERVICE (DDOS PADA SUMBER DAYA JARINGAN DENGAN INTEGRASI NETWORK BEHAVIOR ANALYSIS DAN CLIENT PUZZLE

Directory of Open Access Journals (Sweden)

Septian Geges

2015-01-01

Full Text Available Denial of Service (DoS merupakan permasalahan keamanan jaringan yang sampai saat ini terus berkembang secara dinamis. Semakin tinggi kemampuan komputasi suatu komputer penyerang, serangan DoS yang dapat dihasilkan juga semakin membahayakan. Serangan ini dapat mengakibatkan ketidakmampuan server untuk melayani service request yang sah. Karena itu serangan DoS sangat merugikan dan perlu diberikan pencegahan yang efektif. Ancaman berikutnya yang juga sangat membahayakan adalah Distributed Denial of Service (DDoS, dimana serangan ini memanfaatkan sejumlah besar komputer untuk menjalankan serangan DoS kepada server, web service, atau sumber daya jaringan lain. Mengingat resiko besar yang diakibatkan serangan DDoS ini, banyak peneliti yang terdorong untuk merancang mekanisme penga-manan sumber daya jaringan. Pada penelitian ini, penulis mengkhususkan pokok permasalahan pada pengamanan web service. Penulis mengemuka-kan sebuah mekanisme untuk mengamankan web service dengan cara melakukan filtrasi dan validasi permintaan yang diterima untuk mengakses sumber daya jaringan. Filtrasi dan validasi ini dilakukan dengan gabungan metode Network Behavior Analysis (NBA dan Client Puzzle (CP. Metode NBA menjadi lapisan pertahanan pertama untuk mendeteksi apakah sedang terjadi serangan DDoS dengan mengukur tingkat kepadatan jaringan/Network density. Dari metode NBA, didapatkan IP Address yang perlu divalidasi dengan metode CP sebagai lapisan pertahanan kedua. Apabila suatu service request sudah berhasil melewati proses filtrasi dan validasi ini, maka service request ini baru akan dilayani. Dari hasil percobaan, terbukti metode ini dapat mendeteksi serangan DDoS sekaligus menjamin bahwa service request yang sah mendapat pelayanan yang seharusnya sehingga server dapat melayani service request dengan baik.

2011 Tohoku Tsunami Runup Distribution and Damages around Yamada Bay, Iwate

Science.gov (United States)

Okayasu, A.; Shimozono, T.; Sato, S.; Tajima, Y.; Liu, H.; Takagawa, T.; Fritz, H. M.

2011-12-01

On 11 March 2011, a magnitude Mw = 9.0 earthquake occurred off the coast of Japan's Tohoku region causing catastrophic damage and loss of life. A month later, distribution of inundation and run-up height for the tsunami was measured in and outside Yamada Bay locating at the middle of Iwate Prefecture. Yamada Bay has a narrow bay-mouth the width of which is approximately 1/4 of the bay width. The bay is surrounded by two peninsulas, Omoe and Funakoshi Peninsulas and locates in the rear of Funakoshi Peninsula for the epicenter. At eastern side of Omoe Peninsula which is exposed to the Pacific Ocean, the average tsunami height was 15 to 20m at the coast line. All villages there had very large run-up heights of more than 25m and houses at lower elevation were almost completely washed away. The highest run-up, around 40m with an inundation distance of 500 m, was measured at Aneyoshi Village. The village locates at the bottom of a small V-shape inlet which concentrates the energy of tsunamis and amplifies their height. Fortunately, the village itself had been moved to higher ground after severe damages brought by Meiji Sanriku (1896) and Showa Sanriku (1933) Tsunamis and had no loss of life by the 2011 Tsunami. At Funakoshi Peninsula, the south east side of which is facing to the epicenter, the average height of incoming tsunami was estimated to be about 15m. On the contrary, tsunami height inside Yamada Bay was much smaller, generally around 6 to 9m. The only exception was the base of Funakoshi Peninsula where tsunami coming from the other side came over the base of Peninsula and caused devastating damage to the area. The exposed areas south of Funakoshi Peninsula like Kirikiri had tsunami run-up of more than 15m. It is considered that the narrow bay-mouth reduced the tsunami height and Funakoshi Peninsula worked as a barrier for Yamada Bay. Yamada Town locating inside Yamada Bay however suffered a large loss of life. The ratio of dead or missing to its population is

DAYA SAING BAWANG MERAH DI WILAYAH SENTRA PRODUKSI DI INDONESIA

Directory of Open Access Journals (Sweden)

Haris Fatori Aldila

2017-03-01

Full Text Available The objectives of this study are to analyze (1 the profitability of shallot farming, (2 competitiveness of shallot farming through competitive and comparative advantages and (3 impact of government’s policy on competitiveness of shallot farming in three production centers in Indonesia (Cirebon, Brebes, and Tegal. Data analysis method used Policy Analysis Matrix (PAM. The results show that shallot farming in Cirebon, Brebes and Tegal is financially profitable but economically unprofitable. The analysis of the competitiveness of shallot farming in Cirebon, Brebes and Tegal shows that shallot farming has no comparative advantage but has competitive advantage. The impacts of government’s policy on output show that the government has given protection on the price of shallot. Meanwhile, the government's policy on input is disincentive to farmers. Shallot farmers have to pay inputs more expensive than they should be; however, simultaneously, the government's policy on input and output support the shallot production in Cirebon, Brebes and Tegal.Keywords: comparative advantage, competitive advantage, government’s policy, policy analysis matrix, shallotAbstrakTujuan dari penelitian ini adalah menganalisis keuntungan usaha tani bawang merah, menganalisis daya saing bawang merah melalui keunggulan kometitif dan komparatif, serta menganalisis dampak kebijakan pemerintah pada usaha tani bawang merah di tiga sentra produksi di Indonesia (Cirebon, Brebes, Tegal. Metode analisis data menggunakan PAM (Policy Analysis Matrix. Hasil penelitian menunjukkan bahwa usaha tani bawang merah di Cirebon, Brebes dan Tegal menguntungkan secara finansial tetapi tidak menguntungkan secara ekonomi. Hasil analisis daya saing usaha tani bawang merah di Cirebon, Brebes dan Tegal menunjukkan usaha tani bawang merah tidak memiliki keunggulan komparatif tetapi masih memiliki keunggulan kompetitif. Dampak kebijakan pemerintah terhadap output menunjukkan adanya proteksi

Seafloor geomorphology of western Antarctic Peninsula bays: a signature of ice flow behaviour

Science.gov (United States)

Munoz, Yuribia P.; Wellner, Julia S.

2018-01-01

Glacial geomorphology is used in Antarctica to reconstruct ice advance during the Last Glacial Maximum and subsequent retreat across the continental shelf. Analogous geomorphic assemblages are found in glaciated fjords and are used to interpret the glacial history and glacial dynamics in those areas. In addition, understanding the distribution of submarine landforms in bays and the local controls exerted on ice flow can help improve numerical models by providing constraints through these drainage areas. We present multibeam swath bathymetry from several bays in the South Shetland Islands and the western Antarctic Peninsula. The submarine landforms are described and interpreted in detail. A schematic model was developed showing the features found in the bays: from glacial lineations and moraines in the inner bay to grounding zone wedges and drumlinoid features in the middle bay and streamlined features and meltwater channels in the outer bay areas. In addition, we analysed local variables in the bays and observed the following: (1) the number of landforms found in the bays scales to the size of the bay, but the geometry of the bays dictates the types of features that form; specifically, we observe a correlation between the bay width and the number of transverse features present in the bays. (2) The smaller seafloor features are present only in the smaller glacial systems, indicating that short-lived atmospheric and oceanographic fluctuations, responsible for the formation of these landforms, are only recorded in these smaller systems. (3) Meltwater channels are abundant on the seafloor, but some are subglacial, carved in bedrock, and some are modern erosional features, carved on soft sediment. Lastly, based on geomorphological evidence, we propose the features found in some of the proximal bay areas were formed during a recent glacial advance, likely the Little Ice Age.

Saldanha Bay, South Africa I: the use of ocean colour remote ...

African Journals Online (AJOL)

The efficacy of ocean colour remote sensing in assessing the variability of phytoplankton biomass within Saldanha Bay is examined. Satellite estimates of chlorophyll a (Chl a) were obtained using the maximum peak-height (MPH) algorithm on full-resolution (300 m) data from the Medium Resolution Imaging Spectrometer ...

HUBUNGAN PENGETAHUAN TENTANG ALAT PELINDUNG TELINGA (EAR PLUG DENGAN KEPATUHAN PENGGUNAANNYA PADA PEKERJA BAGIAN TENUN DEPARTEMEN WEAVING SL PT. DAYA MANUNGGAL

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Bianka Beladina Fitriyani

2016-01-01

Full Text Available Pada pertemuan konsultasi WHO-SEARO Intercountry Meeting, di Indonesia  bising  merupakan penyebab gangguan pendengaran ketiga terbanyak. Diperkirakan sedikitnya satu juta karyawan  terancam  bising  dan  akan  terus  meningkat. Tujuan penelitian ini adalah untuk mengetahui hubungan antara pengetahuan dengan kepatuhan penggunaan Alat Pelindung Telinga (Ear Plug pada Pekerja Bagian Tenun Departemen Weaving SL PT. Daya Manunggal Salatiga. Jenis penelitian ini adalah studi cross sectional. Jumlah sampel pada penelitian ini sebanyak 73 responden. Pengambilan sampel menggunakan sampling random sistematis. Instrumen dalam penelitian ini adalah kuesioner dan lembar observasi. Analisis data menggunakan uji chi square dengan derajat kemaknaan =0,05. Hasil penelitian menunjukkan bahwa ada hubungan antara pengetahuan dengan kepatuhan penggunaan Alat Pelindung Telinga (ear plug pada Pekerja Bagian Tenun Departemen Weaving SL PT. Daya Manunggal Salatiga (p=0,026. Saran yang dapat direkomendasikan dari hasil penelitian adalah perusahaan untuk lebih meningkatkan kedisiplinan pada pekerja dengan memberi sanksi yang tegas pada pekerja yang tidak menggunakan alat pelindung telinga (ear plug serta lebih sering mengadakan pelatihan tentang alat pelindung diri khususnya ear plug. At the WHO-SEARO Intercountry Meeting, in Indonesia noise is the third highest cause of hearing lost. A million employees estimated threatened by noisy and will continue increase. The purpose of this study was to know the relationship between knowledge and obedience to used an ear protective equipment (ear plug for woven workers of  Weaving SL Departement in Daya Manunggal Corp Salatiga. This research was a cross sectional study. The number of samples in this study were 73 respondents. Sampling used systematic random sampling. Instruments were questionnaire and observe sheet. Data analysis using chi square test with significance level = 0.05. The results showed that there was a

Prediction and assessment of environmental impacts of Guangdong low-and-intermediate level radioactive waste disposal site

International Nuclear Information System (INIS)

Huang Yawen

1996-01-01

Guangdong Low-and Intermediate Level Radioactive Waste Disposal Site is located 5-7 km northeast to the Daya Bay Nuclear Power Plant. It is in a hilly area with strongly weathered light metamorphic quartz siltstone. The groundwater is 2 m below the repository bottom. The disposal unit is a U-shape concrete structure with drainage and water collecting system at the bottom. The designed cover is a multi-layer structure with functions of preventing from water infiltration, animal and plant intrusion. It is assumed that the engineered barriers would be effective to avoid waste immersion by surface water and groundwater within the first 100 years after closure. After 100 years, the engineered barriers would fail gradually. Radionuclides may release from the disposal unite. Some will enter the nearby stream, some will flow into the Daya Bay, and some will transport to groundwater through geologic media

Sumber Daya Arkeologi dalam Pembangunan Pariwisata Berkelanjutan di Provinsi Maluku

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Ni Komang Ayu Astiti

2016-11-01

Full Text Available Archaeological resources in Maluku has important value in regional development and spread in different natural landscape. The problem that arises is how to make the proper management of this resource as a tourist attraction while maintaining the authenticity and preservation in accordance with the character possessed. The purpose and usefulness of the research is to make the archaeological resources in the Moluccas as one of the tourist attractions that provide benefits not only economic, but also social, cultural and environmental on the current generation and the future. The data used are secondary data from the results of research that has been done before and the results of the survey author to several archaeological sites in the city of Ambon as well as if by applying the theories and concepts appropriate to address concerns and objectives. Archaeological resources in Maluku has a unique, originality, authenticity and can be used as industrial commodities tourism as a diverse tourist attractions. The management of this potential is important to increase the diversity of attractions in the ministry of foreign tourists activity continues to increase in visiting museums and archaeological sites in Indonesia. Adapted to the character development of each site and archaeological sites in the region to bring up the context of the importance and significance of contemporary leading to the realization of sustainable tourism development (sustainable tourism management. Empowering local communities is very important as one of the pillars with partnerships with other stakeholders,  and will provide benefits in balance between economic, social, cultural and environmentally sustainable manner in the community both now and for generations to come. Sumber daya arkeologi  di Maluku mempunyai nilai penting dalam pembangunan daerah dan tersebar  pada landscape alam yang  berbeda. Permasalahan yang  muncul adalah bagaimana  pengelolaan yang  tepat untuk

Predominant Nearshore Sediment Dispersal Patterns in Manila Bay

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Fernando Siringan

1997-12-01

Full Text Available Net nearshore sediment drift patterns in Manila Bay were determined by combining the coastal geomorphology depicted in 1 : 50,000scale topographic maps and Synthetic Aperture Radar (SAR images, with changes in shoreline position and predominant longshore current directions derived from the interaction of locally generated waves and bay morphology.Manila Bay is fringed by a variety of coastal subenvironments that reflect changing balances of fluvial, wave, and tidal processes. Along the northern coast, a broad tidal-river delta plain stretching from Bataan to Bulacan indicates the importance of tides, where the lateral extent of tidal influences is amplified by the very gentle coastal gradients. In contrast, along the Cavite coast sandy strandplains, spits, and wave-dominated deltas attest to the geomorphic importance of waves that enter the bay from the South China Sea.The estimates of net sediment drift derived from geomorphological, shoreline-change, and meteorological information are generally in good agreement. Sediment drift directions are predominantly to the northeast along Cavite, to the northwest along Manila and Bulacan, and to the north along Bataan. Wave refraction and eddy formation at the tip of the Cavite Spit cause southwestward sediment drift along the coast from Zapote to Kawit. Geomorphology indicates that onshore-offshore sediment transport is probably more important than alongshore transport along the coast fronting the tidal delta plain of northern Manila Bay. Disagreements between the geomorphic-derived and predicted net sediment drift directions may be due to interactions of wave-generated longshore currents with wind- and tide-generated currents.

76 FR 15246 - Anchorage Regulations; Narragansett Bay and Rhode Island Sound, RI

Science.gov (United States)

2011-03-21

...-AA01 Anchorage Regulations; Narragansett Bay and Rhode Island Sound, RI AGENCY: Coast Guard, DHS... Rhode Island Sound south of Brenton Point, Rhode Island, for use by vessels waiting to enter... Sound that under current informal practice is routinely used by mariners as an anchorage while waiting...

PENGARUH GAYA KEPEMIMPINAN, KOMITMEN, ORGANISASI, KUALITAS SUMBER DAYA, REWARD, DAN PUNISHMENT TERHADAP ANGGARAN BERBASIS KINERJA (Studi Empirik Pada Pemerintah Kabupaten Lombok Barat

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Syarifah Massuki Fitri

2014-07-01

Full Text Available Penelitian ini bertujuan untuk menguji secara empiris pengaruh gaya kepemimpinan, komitmen organisasi, kualitas sumber daya, reward dan punishment terhadap implementasi anggaran berbasis kinerja pada Pemerintahan Kabupaten Lombok Barat. Pengambilan sampel dilakukan dengan metode purposive sampling. Metode analisis yang digunakan adalah regresi linier berganda. Hasil dari pengujian hipotesis di dalam penelitian ini menunjukkan bahwa gaya kepemimpinan berpengaruh negatif dan signifikan terhadap anggaran berbasis kinerja. Kualitas sumber daya dan reward berpengaruh signifikan terhadap anggaran berbasis kinerja. Komitmen organisasi dan punishment tidak berpengaruh terhadap anggaran berbasis kinerja. Secara simultan, gaya kepemimpinan, komitmen seluruh komponen organisasi, kualitas sumber daya, reward, dan punishment berpengaruh positif dan signifikan terhadap anggaran berbasis kinerja pada pemerintahan kabupaten Lombok Barat. This research aims to empirically examine the influance of Leadership Style, Organization Commitment, Quality of Resources, Reward, and Punishment regarding the implementation of Performance-Based Budgeting in the West Lombok Regency. Sampling was done with the purposive sampling. Analysis method the used is multiple linear regression. Results of hypothesis testing in this study indicate that leadership style has negative and significant impact of performance-based budgeting. Quality of Resources and reward has positive and significant impact of performance-based budgeting. While, Organization Commitment and Punishment not influence on the implementation of performance-based budgeting in the West Lombok Regency. Simultaneously, Leadership Style, Organization Commitment, Quality of Resources, Reward, and Punishment have a positive and significant influence on the implementation of performance-based budgeting in the West Lombok Regency.

Sustainable development in the Hudson Bay/James Bay bioregion

International Nuclear Information System (INIS)

Anon.

1991-01-01

An overview is presented of projects planned for the James Bay/Hudson Bay region, and the expected environmental impacts of these projects. The watershed of James Bay and Hudson Bay covers well over one third of Canada, from southern Alberta to central Ontario to Baffin Island, as well as parts of north Dakota and Minnesota in the U.S.A. Hydroelectric power developments that change the timing and rate of flow of fresh water may cause changes in the nature and duration of ice cover, habitats of marine mammals, fish and migratory birds, currents into and out of Hudson Bay/James Bay, seasonal and annual loads of sediments and nutrients to marine ecosystems, and anadromous fish populations. Hydroelectric projects are proposed for the region by Quebec, Ontario and Manitoba. In January 1992, the Canadian Arctic Resources Committee (CARC), the Environmental Committee of Sanikuluaq, and the Rawson Academy of Arctic Science will launch the Hudson Bay/James Bay Bioregion Program, an independent initiative to apply an ecosystem approach to the region. Two main objectives are to provide a comprehensive assessment of the cumulative impacts of human activities on the marine and freshwater ecosystems of the Hudson Bay/James Bay bioregion, and to foster sustainable development by examining and proposing cooperative processes for decision making among governments, developers, aboriginal peoples and other stakeholders. 1 fig

SOUTH AFRICA AT WAR, 1912-1982

African Journals Online (AJOL)

A three- pronged attack was launched upon the German. Colony; from the south, Luderitzbucht and from. Walvis Bay4 ..... Brigade was sent to the island to replace British troops needed in .... three miles the roads leading to the bridge were.

Cultivation-dependent analysis of the microbial diversity associated with the seagrass meadows in Xincun Bay, South China Sea.

Science.gov (United States)

Jiang, Yu-Feng; Ling, Juan; Wang, You-Shao; Chen, Biao; Zhang, Yan-Ying; Dong, Jun-De

2015-10-01

Microbial communities have largely existed in the seagrass meadows. A total of 496 strains of the bacteria in the seagrass meadows, which belonged to 50 genera, were obtained by the plate cultivation method from three sites of Xincun Bay, South China Sea. The results showed that Bacillales and Vibrionales accounted for the highest proportions of organisms in all communities. The diversity of the bacteria in the sediment was higher than that associated with seagrass. Thalassia hemperichii possessed the highest abundance of bacteria, followed by Enhalus acoroides and Cymodocea rotundata. Robust seasonal dynamics in microbial community composition were also observed. It was found that microbial activities were closely tied to the growth stage of the seagrass. The microbial distribution was the lowest in site 3. The abundance of the bacteria was linked to the interactions between bacteria and plants, the condition of plant and even the coastal water quality and the nutrition level in the sediment.

Oceanic variability in the western sector of Algoa Bay, South Africa ...

African Journals Online (AJOL)

The city of Port Elizabeth lies in the western sector of Algoa Bay, and a number of projects have investigated the oceanic temperature, salinity and current structures in the vicinity. This paper analyses past results, and then incorporates measurements of salinity, sea temperatures and currents from projects over the years ...

Historical occurrence of coho salmon (Oncorhynchus kisutch) in streams of the Santa Cruz Mountain region of California: response to an Endangered Species Act petition to delist coho salmon south of San Francisco Bay

Science.gov (United States)

Brian C. Spence; Walter G. Duffy; John Carlos Garza; Bret Harvey; Susan M. Sogard; Laurie A. Weitkamp; Thomas H. Williams; David A. Boughton

2011-01-01

In November 2003, the National Marine Fisheries Service received a petition from Homer T. McCrary to redefine the southern extent of the Central California Coast Coho Salmon Evolutionarily Significant Unit (CCC Coho Salmon ESU) to exclude populations that spawn in coastal watersheds south of the entrance to San Francisco Bay (i.e., the Golden Gate). The petitioner’s...

Power System Reliability Assessment by Analysing Voltage Dips on the Blue Horizon Bay 22KV Overhead Line in the Nelson Mandela Bay Municipality

Science.gov (United States)

Lamour, B. G.; Harris, R. T.; Roberts, A. G.

2010-06-01

Power system reliability problems are very difficult to solve because the power systems are complex and geographically widely distributed and influenced by numerous unexpected events. It is therefore imperative to employ the most efficient optimization methods in solving the problems relating to reliability of the power system. This paper presents a reliability analysis and study of the power interruptions resulting from severe power outages in the Nelson Mandela Bay Municipality (NMBM), South Africa and includes an overview of the important factors influencing reliability, and methods to improve the reliability. The Blue Horizon Bay 22 kV overhead line, supplying a 6.6 kV residential sector has been selected. It has been established that 70% of the outages, recorded at the source, originate on this feeder.

A field study of littoral processes in Estero Bay, California

Science.gov (United States)

Dingler, J.R.; Anima, R.J.; Molzan, D.E.; Luepke, Gretchen; Peterson, C.L.

1982-01-01

Estero Bay, which lies on the central California coast, has rocky headlands at both ends and sandy beaches within it. The shoreline of the bay has adjusted to be in equilibrium with the predominant wave climate, which is from the northwest. Because of its present shoreline configuration, the net southward littoral transport found along much of the California coast does not occur within Estero Bay. Instead, the sand primarily moves on- and offshore with a reversing longshore component. This sand transport pattern produces a littoral cell within Estero Bay even though there is no submarine canyon in the area. The primary sand sinks for this cell appear to be the sand spit south of Morro Rock and the entrance to Morro Bay itself, although this opinion was not experimentally verified. Field work during one summer (1978) and the following winter (1979) produced baseline data on the profile of and grain-size distribution across the littoral zone. In the offshore part of the littoral zone we also studied ripple size and type, internal structure, depth of erosion, and mineralogy. Although these data, which were collected along nine transects spaced 2 km apart, are inadequate to yield transport and energy rates, they indicate a northward decrease in wave energy within Estero Bay and a mixing of the sediments in the offshore. Box core and rod height data from grid points in seven meters of water showed that on the order of a meter of erosion occurred in the central part of the bay between the two sampling periods. Offshore, the data were incomplete, but at one station, in 17 m of water, at least 20 cm of erosion occurred.

Distribution and behavior of major and trace elements in Tokyo Bay, Mutsu Bay and Funka Bay marine sediments

International Nuclear Information System (INIS)

Honda, Teruyuki; Kimura, Ken-ichiro

2003-01-01

Fourteen major and trace elements in marine sediment core samples collected from the coasts along eastern Japan, i.e. Tokyo Bay (II) (the recess), Tokyo Bay (IV) (the mouth), Mutsu Bay and Funka Bay and the Northwest Pacific basin as a comparative subject were determined by the instrumental neutron activation analysis (INAA). The sedimentation rates and sedimentary ages were calculated for the coastal sediment cores by the 210 Pb method. The results obtained in this study are summarized as follows: (1) Lanthanoid abundance patterns suggested that the major origin of the sediments was terrigenous material. La*/Lu* and Ce*/La* ratios revealed that the sediments from Tokyo Bay (II) and Mutsu Bay more directly reflected the contribution from river than those of other regions. In addition, the Th/Sc ratio indicated that the coastal sediments mainly originated in the materials from the volcanic island-arcs, Japanese islands, whereas those from the Northwest Pacific mainly from the continent. (2) The correlation between the Ce/U and Th/U ratios with high correlation coefficients of 0.920 to 0.991 indicated that all the sediments from Tokyo Bay (II) and Funka Bay were in reducing conditions while at least the upper sediments from Tokyo Bay (IV) and Mutsu Bay were in oxidizing conditions. (3) It became quite obvious that the sedimentation mechanism and the sedimentation environment at Tokyo Bay (II) was different from those at Tokyo Bay (IV), since the sedimentation rate at Tokyo Bay (II) was approximately twice as large as that at Tokyo Bay (IV). The sedimentary age of the 5th layer (8∼10 cm in depth) from Funka Bay was calculated at approximately 1940∼50, which agreed with the time, 1943∼45 when Showa-shinzan was formed by the eruption of the Usu volcano. (author)

Trends in Accretion Rates of Riverine Sediments in a Distal Bay and Wetlands Using 7-Beryllium as a Tracer: Fourleague Bay, Louisiana.

Science.gov (United States)

Restreppo, G. A.; Bentley, S. J.; Wang, J.; Xu, K.

2017-12-01

To combat land loss along the Mississippi River Delta, Louisiana has launched a historic campaign to sustain and regrow coastal lands using, in part, sediment diversions. Previous research has focused primarily on sand sized sediment load, which is usually deposited proximal to a river's delta or a diversion's outlet. Fine sediments constitute the majority of sediment load in the Mississippi, but are under-studied with respect to dispersal processes, particularly in terms of sediment supply to distal deltaic bays and wetlands. The Atchafalaya River and associated wetlands serve as prime study areas for this purpose. Bimonthly time-series push cores were collected from May 2015 to May 2016 along ten sites within Fourleague Bay, Louisiana. Fourleague Bay has remained stable against the deteriorative effects of relative sea level rise, standing out along Louisiana's declining coastline. Of the ten field sites, five are located across a longitudinal transect in the middle bay, while the other five are located in adjacent marshes. All sites fall within 10 to 30 km of the Atchafalaya Delta, extending south towards the Gulf of Mexico. Cores were extruded in 2 cm intervals, dried, ground, and analyzed via gamma spectrometry for the presence of 7Be. Inventories of 7Be were then calculated and used to determine daily mass accretion rate (MAR) over twelve months. Average MAR values for the bay and the marshes are compared with Atchafalaya River discharge, wind data, and atmospheric pressure through the year of sampling. Peak marsh MAR, 0.88 ± 0.20 kg m-2 d-1, occurs just after historically high river discharge. Peak bay MAR, 1.2 ± 0.67 kg m-2 d-1, occurs during seasonal low river discharge and calm winds. Average bay and marsh MARs have a moderate to strong, negative correlation when compared. Results indicate sediment bypass of the bay floor during periods of moderate to high river discharge, entering the marshes directly when inundation occurs and enhanced by the passage

South Carolina Coastal Erosion Study, Data Report for Observations, October 2003 - April 2004

Science.gov (United States)

Sullivan, Charlene M.; Warner, John C.; Martini, Marinna A.; Voulgaris, George; Work, Paul; Haas, Kevin A.; Hanes, Daniel

2006-01-01

Oceanographic observations have been made at nine locations in Long Bay, South Carolina from October 2003 through April 2004. These sites are centered around a shore-oblique sand feature that is approximately 10 km long, 2 km wide, and in excess of 3 m thick. The observations were collected through a collaborative effort with the U.S. Geological Survey, the University of South Carolina, and Georgia Institute of Technology Savannah Campus as part of a larger study to understand the physical processes that control the transport of sediments in Long Bay.

A biological effects monitoring survey of Cardigan Bay using flatfish histopathology, cellular biomarkers and sediment bioassays: findings of the Prince Madog Prize 2003.

Science.gov (United States)

Lyons, Brett P; Stentiford, Grant D; Bignell, John; Goodsir, Freya; Sivyer, David B; Devlin, Michelle J; Lowe, Dave; Beesley, Amanda; Pascoe, Christine K; Moore, Mike N; Garnacho, Eva

2006-07-01

Cardigan Bay on the western coast of the UK is considered a pristine location with much of its coastal and marine habitats protected under various national and EC Directives. Despite this, populations of the flatfish dab (Limanda limanda) captured from Cardigan Bay display elevated levels of liver tumours relative to the background prevalence of the disease. This study describes the findings of a research cruise that took place during November 2003 to assess the prevalence of tumours in dab from selected sites in and around Cardigan Bay. In addition, potential causative mechanisms were investigated via measurement of a range of end points (including composition and abundance of benthic and phytoplankton communities, sediment toxicity and cellular biomarkers of genotoxicity) from sediment, water and biota samples. Fish captured from South Cardigan Bay displayed a relatively higher prevalence of liver tumours compared to those captured from Red Wharf Bay. Hepatocellular adenoma (8% and 2%, respectively) and hepatocellular foci of cell alteration (18% and 6%, respectively) were most prevalent in South Cardigan Bay. Analysis of the sediment failed to distinguish any differences in toxicity between the two sampling sites. However, DNA strand breaks in red blood cells of dab were significantly higher (p < 0.05) in fish collected from Red Warf Bay compared with those sampled at Cardigan Bay. The alignment of biological effects measures via such integrated cruise programs are discussed. This work was partly funded under the auspices of the 2003 Prince Madog Prize.

Seafloor geomorphology of western Antarctic Peninsula bays: a signature of ice flow behaviour

Directory of Open Access Journals (Sweden)

Y. P. Munoz

2018-01-01

Full Text Available Glacial geomorphology is used in Antarctica to reconstruct ice advance during the Last Glacial Maximum and subsequent retreat across the continental shelf. Analogous geomorphic assemblages are found in glaciated fjords and are used to interpret the glacial history and glacial dynamics in those areas. In addition, understanding the distribution of submarine landforms in bays and the local controls exerted on ice flow can help improve numerical models by providing constraints through these drainage areas. We present multibeam swath bathymetry from several bays in the South Shetland Islands and the western Antarctic Peninsula. The submarine landforms are described and interpreted in detail. A schematic model was developed showing the features found in the bays: from glacial lineations and moraines in the inner bay to grounding zone wedges and drumlinoid features in the middle bay and streamlined features and meltwater channels in the outer bay areas. In addition, we analysed local variables in the bays and observed the following: (1 the number of landforms found in the bays scales to the size of the bay, but the geometry of the bays dictates the types of features that form; specifically, we observe a correlation between the bay width and the number of transverse features present in the bays. (2 The smaller seafloor features are present only in the smaller glacial systems, indicating that short-lived atmospheric and oceanographic fluctuations, responsible for the formation of these landforms, are only recorded in these smaller systems. (3 Meltwater channels are abundant on the seafloor, but some are subglacial, carved in bedrock, and some are modern erosional features, carved on soft sediment. Lastly, based on geomorphological evidence, we propose the features found in some of the proximal bay areas were formed during a recent glacial advance, likely the Little Ice Age.

Benthic flux of nutrients and trace metals in the northern component of San Francisco Bay, California

Science.gov (United States)

Kuwabara, James S.; Topping, Brent R.; Parcheso, Francis; Engelstad, Anita C.; Greene, Valerie E.

2009-01-01

Island, the benthic flux of soluble reactive phosphorus (SRP) was consistently: (1) lower than previously reported for South Bay sites, (2) an order of magnitude lower than oligotrophic Coeur d?Alene Lake, (3) two orders of magnitude lower than determined for eutrophic Upper Klamath Lake, and (4) an order of magnitude or more lower than the estimated summer riverine inputs for SRP (900 to 1,300 kilograms of phosphorous per day (kg-P d-1)). In contrast to fluxes reported for the South Bay, nitrate fluxes were consistently negative (that is, drawn from the water column into the sediment), except for one site with statistically insignificant nitrate fluxes (Site 409 within Suisun Bay). The most negative nitrate flux (-7.3?0.1 mmole m-2d-1) was observed within Grizzly Bay (Site 416). Observed nitrate fluxes bracketed the estimated summer fluvial flux of nitrate (3,500 to 5,000 kg-N d-1). With the exception of the two Grizzly Bay sites (416 and 417), the consistently positive benthic flux of ammonia generally counteracted the negative flux of nitrate to yield a net balance of dissolved inorganic nitrogen. Ammonia benthic fluxes extrapolated for Suisun Bay ranged from 320 kg-N d-1 (Site SSB009 near the entrance to Honker Bay) to 1,900 kg-N d-1 (Montezuma Island). These values represent a significant ammonia source to the water column relative to summer riverine inputs (approximately 400 to 600 kg-N d-1). Dissolved silica also displayed a consistently positive benthic flux, except for Site 409 within Suisun Bay, which showed insignificant fluxes (also insignificant for nitrate and SRP). As with the nitrate fluxes, Grizzly Bay and Browns Island sites yielded the highest dissolved silica fluxes (1.3?1.2 to 2.5?0.6 mmole m-2d-1, respectively). These initial diffusive-flux estimates are greater than those measured in the South Bay using core-incubation experiments, which include bioturbation and bioirrigation effects, but they are nevertheless probably one to t

Health Effects Due to Radionuclides Content of Solid Minerals within Port of Richards Bay, South Africa

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Felix B. Masok

2016-11-01

Full Text Available This study assessed the radiological health hazards to various body organs of workers working within Transnet Precinct in Richards Bay in Kwazulu-Natal, South Africa due to radionuclide content of mineral ores often stored within the facility. Thirty samples were collected from five mineral ores (rock phosphate, rutile, zircon, coal and hematite and analyzed for 238U, 234U, 226Ra, 210Pb, 235U, 232Th, 228Ra, 228Th and 40K using delayed neutron activation analysis and low energy gamma spectroscopy. Rutile was found to be the most radioactive mineral ore within the facility with 210Pb concentration of 759.00 ± 106.00 Bq·kg−1. Effective annual dose rate in (mSv·y−1 delivered to different organs of the body: testes, bone marrow, whole body, lungs and ovaries from mineral ores were such that dose from mineral ores decreased in the order coal > rutile > rock phosphate > hematite > zircon. The organs with the highest received dose rate were the testes and this received dose was from coal. However, all of the calculated absorbed dose rates to organs of the body were below the maximum permissible safety limits.

Cosmic noise absorption and ionospheric currents at the South Pole and Frobisher Bay: Initial results

International Nuclear Information System (INIS)

Rosenberg, T.J.; Wolfe, A.; Lanzerotti, L.J.

1987-01-01

Studies of the conjugacy of auroral and ionospheric phenomena at very high latitudes are an important aspect of magnetospheric physics research. The extent to which auroral phenomena in opposite hemispheres are similar in occurrence and in the details of their temporal, spatial, and spectral characteristics can be used to infer the commonality of the source(s) of the disturbances. At one extreme in this consideration is the questions of whether sources lie on open or closed magnetic field lines. The University of Maryland and AT ampersand T Bell Laboratories have operated riometers and fluxgate magnetometers, respectively, at South Pole since 1982. Corresponding measurements at Frobisher Bay were begun in mid-1985. Riometers record the absorption of cosmic radio noise in the ionosphere produced by the enhances precipitation of energetic charged particles. The studies of the riometer data relate mainly to the effects of the influx of magnetospheric electrons, which give rise to auroral absorption of the cosmic signals. Intense currents (electrojets) that often flow in the ionosphere in association with auroral absorption events produce magnetic field changes that can be recorded on the ground by appropriately sited magnetometers. This report presents some initial results of the comparison of the two data sets

Influence of urbanization and industrialization on metal enrichment of sediment cores from Shantou Bay, South China

International Nuclear Information System (INIS)

Qiao, Yongmin; Yang, Yang; Zhao, Jiangang; Tao, Ran; Xu, Ronghua

2013-01-01

Four sediment cores were collected to investigate geochemical sources and to assess enrichment and pollution of metals in sediments from Shantou Bay, an area experiencing rapid economic development on the Southeastern Coast of China. The results indicated that the concentrations of the majority of metals showed a decrease with depth, with overall maximum values in the top layers, and that different sampling locations in the Bay received slightly different types of inputs. Three major sources were identified by correlation analysis and principal component analysis: river inputs, metropolitan, and port facilities discharge. Calculation of a pollution load index revealed overall low values, but the enrichment factor values for Pb and Cd were typically high for all cores. The mean concentrations of Cu, Pb, Zn and to some extent Cd exceeded the Effects-Range-Low values in the majority of the cases, indicating that there were possible ecotoxicological risks to organisms in Shantou Bay. -- Highlights: •Metals had downward decrease with overall maximum value at top layers. •River input, metropolitan and port facilities discharge are identified as major sources. •Pb and Cd are mainly enriched metals. •Cu, Pb, Zn and Cd had potential ecotoxicological risks to organisms in Shantou Bay. -- Shantou Bay was polluted by Cd, Cu, Pb and Zn, and showed an increase trend along time. River input, metropolitan and port facilities were identified as their sources based on multi-analysis

Hydrodynamic Characteristics and Salinity Patterns in Estero Bay, Lee County, Florida

Science.gov (United States)

Byrne, Michael J.; Gabaldon, Jessica N.

2008-01-01

Estero Bay is an estuary (about 12 miles long and 3 miles wide) on the southwestern Florida coast, with several inlets connecting the bay to the Gulf of Mexico and numerous freshwater tributaries. Continuous stage and salinity data were recorded at eight gaging stations in Estero Bay estuary from October 2001 to September 2005. Continuous water velocity data were recorded at six of these stations for the purpose of measuring discharge. In addition, turbidity data were recorded at four stations, suspended sediment concentration were measured at three stations, and wind measurements were taken at one station. Salinity surveys, within and around Estero Bay, were conducted 15 times from July 2002 to January 2004. The average daily discharge ranged from 35,000 to -34,000 ft3/s (cubic feet per second) at Big Carlos Pass, 10,800 to -11,200 ft3/s at Matanzas Pass, 2,200 to -2,900 ft3/s at Big Hickory Pass, 680 to -700 ft3/s at Mullock Creek, 330 to -370 ft3/s at Estero River, and 190 to -180 ft3/s at Imperial River. Flood tide is expressed as negative discharge and ebb flow as positive discharge. Reduced salinity at Matanzas Pass was negatively correlated (R2 = 0.48) to freshwater discharge from the Caloosahatchee River at Franklin Locks (S-79). Matanzas Pass is hydrologically linked to Hell Peckney Bay; therefore, water-quality problems associated with the Caloosahatchee River also affect Hell Peckney Bay. Rocky Bay was significantly less saline than Coconut Point and Matanzas Pass was significantly less saline than Ostego Bay, based on data from the salinity surveys. The quality-checked and edited continuous data and the salinity maps have been compiled and are stored on the U.S. Geological Survey South Florida Information Access (SOFIA) website (http://sofia.usgs.gov).

Humic Substances from Manila Bay and Bolinao Bay Sediments

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Elma Llaguno

1997-12-01

Full Text Available The C,H,N composition of sedimentary humic acids (HA extracted from three sites in Manila Bay and six sites in Bolinao Bay yielded H/C atomic ratios of 1.1-1.4 and N/C atomic ratios of 0.09 - 0.16. The Manila Bay HA's had lower H/C and N/C ratios compared to those from Bolinao Bay. The IR spectra showed prominent aliphatic C-H and amide I and II bands. Manila Bay HA's also had less diverse molecular composition based on the GC-MS analysis of the CuO and alkaline permanganate oxidation products of the humic acids.

Princeton University High Energy Physics Research

Energy Technology Data Exchange (ETDEWEB)

Marlow, Daniel R. [Princeton Univ., NJ (United States)

2015-06-30

This is the Final Report on research conducted by the Princeton Elementary Particles group over the approximately three-year period from May 1, 2012 to April 30, 2015. The goal of our research is to investigate the fundamental constituents of matter, their fields, and their interactions; to understand the properties of space and time; and to study the profound relationships between cosmology and particle physics. During the funding period covered by this report, the group has been organized into a subgroup concentrating on the theory of particles, strings, and cosmology; and four subgroups performing major experiments at laboratories around the world: CERN, Daya Bay, Gran Sasso as well as detector R\\&D on the Princeton campus. Highlights in of this research include the discovery of the Higgs Boson at CERN and the measurement of $\\sin^22\\theta_{13}$ by the Daya Bay experiment. In both cases, Princeton researchers supported by this grant played key roles.

Preliminary bathymetry of Blackstone Bay and Neoglacial changes of Blackstone Glaciers, Alaska

Science.gov (United States)

Post, Austin

1980-01-01

Preliminary bathymetry (at 1:20,000 scale) and scientific studies of Blackstone Bay Alaska, by the Research Vessel Growler in 1978 disclose that the head of the bay consists of two basins separated by Willard Island and a submarine ridge. Both basins are closed on the north by terminal-moraine bars where Blackstone Glacier and its tributaries terminated as recently as about A.D. 1350; a carbon-14 date of 580 years before present on Badger Point, and old trees farther up the bay, disclose that the glaciers retreated to two narrow inlets at the head of the bay before 1400. The inlets were still glacier-covered until at least 1909. Glaciers in both inlets have continued to retreat; at present they terminate at the head of tidewater, where they discharge small icebergs. Only relatively thin sediments have accumulated in the eastern basin south of the terminal-moraine bar, and most of the bottom is hard and irregular as disclosed by soundings and profiles. The northern part of Blackstone Bay is very deep; at more than 1,100 feet below sea level a large, level accumulation of sediment is present which is presumably as much as 1,000 feet deep and has been accumulating since late Pleistocene glaciers retreated. (USGS)

DAYA HAMBAT EKSTRAK DAUN RAMBUTAN RAPIAH (Nephelium lappaceum L. TERHADAP PERTUMBUHAN TANAMAN TEMULAWAK

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A. A. Istri Mirah Dharmadewi

2015-12-01

Full Text Available Rambutan rapiah (Nephelium lappaceum L. merupakan salah satu tanaman yang dapat digunakan sebagai obat yang termasuk kedalam family Sapindaceae. Rambutan mengandung senyawa alelopati yang dapat menghambat pertumbuhan tanaman yang tumbuh disekitarnya. Penelitian ini bertujuan untuk mengetahui daya hambat ekstrak daun rambutan rapiah terhadap pertumbuhan temulawak serta mengetahui kemampuan tanaman temulawak untuk bertahan terhadap pemberian ekstrak daun rambutan. Parameter yang diamati adalah tinggi tanaman, panjang daun, lebar daun, jumlah daun, jumlah tunas dan berat rimpang yang diamati pada akhir pengamatan. Pemberian ekstrak daun rambutan dengan konsentrasi 5%,10%,15%, 20% mengakibatkan tinggi tanaman, panjang daun, lebardaun, jumlah daun dan berat rimpang lebih rendah jika dibandingkan dengan kontrol.

Riverine discharges to Chesapeake Bay: Analysis of long-term (1927–2014) records and implications for future flows in the Chesapeake Bay basin

Science.gov (United States)

Rice, Karen; Moyer, Douglas; Mills, Aaron L.

2017-01-01

The Chesapeake Bay (CB) basin is under a total maximum daily load (TMDL) mandate to reduce nitrogen, phosphorus, and sediment loads to the bay. Identifying shifts in the hydro-climatic regime may help explain observed trends in water quality. To identify potential shifts, hydrologic data (1927–2014) for 27 watersheds in the CB basin were analyzed to determine the relationships among long-term precipitation and stream discharge trends. The amount, frequency, and intensity of precipitation increased from 1910 to 1996 in the eastern U.S., with the observed increases greater in the northeastern U.S. than the southeastern U.S. The CB watershed spans the north-to-south gradient in precipitation increases, and hydrologic differences have been observed in watersheds north relative to watersheds south of the Pennsylvania—Maryland (PA-MD) border. Time series of monthly mean precipitation data specific to each of 27 watersheds were derived from the Precipitation-elevation Regression on Independent Slopes Model (PRISM) dataset, and monthly mean stream-discharge data were obtained from U.S. Geological Survey streamgage records. All annual precipitation trend slopes in the 18 watersheds north of the PA-MD border were greater than or equal to those of the nine south of that border. The magnitude of the trend slopes for 1927–2014 in both precipitation and discharge decreased in a north-to-south pattern. Distributions of the monthly precipitation and discharge datasets were assembled into percentiles for each year for each watershed. Multivariate correlation of precipitation and discharge within percentiles among the groups of northern and southern watersheds indicated only weak associations. Regional-scale average behaviors of trends in the distribution of precipitation and discharge annual percentiles differed between the northern and southern watersheds. In general, the linkage between precipitation and discharge was weak, with the linkage weaker in the northern watersheds

DAYA SAING PT BENAR FLORA UTAMA BERDASARKAN AKTIVITAS RANTAI NILAI FLORIKULTURA

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Ratih Marina Kurniaty

2012-11-01

menggambarkan dari kondisi internal dan eksternal sebagai analisis faktor keberhasilan perusahaan, (3 posisi strategis perusahaan, dan (4 merumuskan strategi alternatif untuk meningkatkan daya saing dalam industri florikultura. Penelitian ini menggunakan metode analisis SWOT dengan mempertimbangkan posisi perusahaan dan pendekatan value chain dimulai dengan pemetaan rantai untuk menggambarkan siapa aktor yang terlibat, apa masalah bisnis di perusahaan ini dan aktivitas mana memiliki kontribusi terbesar. Pendekatan rantai nilai juga digunakan untuk menentukan produk terkemuka dari laporan penjualan tahunan. Hasil penelitian menunjukkan bahwa isu-isu dalam rantai nilai meliputi: harga input yang mahal, pasokan benih tidak menentu dan biaya transportasi terutama untuk Negara Eropa dan Amerika lebih tinggi. Hasil matriks internal dan eksternal, posisi perusahaan pada pertumbuhan strategis sehingga perusahaan menerapkan beberapa strategi. Strategi alternatif yang dapat ditingkatkan oleh perusahaan, seperti: (1 maintaning hubungan baik dengan pelanggan dan pemasok, (2 memperluas pasar ekspor ke Asia, (3 meningkatkan jenis pohon, (4 mengikuti pameran besar, (5 berinovasi produk ke membuat trendcentre tanaman, (6 peningkatan manajemen pengetahuan untuk sumber daya manusia di perusahaan, dan (7 memaksimalkan produksi untuk pasar domestik, (8 saluran distribusi yang didirikan di setiap kota, (9 membuat target pasar yang jelas, (10 mempertahankan kualitas tanaman, (11 merestrukturisasi perusahaan dalam rangka untuk memperjelas spesialisasi pekerjaan, (12 membuat dokumen menyediakan benih sesuai dengan kebutuhan pelanggan.Kata kunci: daya saing, industri florikultura, rantai pemetaan, analisis rantai nilai ekonomi, analisis SWOT

Planktonic copepod community in the neritic area south western part of Tunis bay influenced by Meliane river supplies (south western Mediterranean sea)

OpenAIRE

Ben Lamine, Y.; Daly Yahia Kefi, O.; Daly Yahia, N.

2012-01-01

The Tunis bay is located in the North Estern coast of Tunisia and receives in its Western part flows from Meliane River. Our study aims to describe the composition and the spatiotemporal distribution of planktonic copepods in the bay in order to identify the effect of the Meliane River supplies on the community. A grid of 19 stations was investigated monthly from July 2004 to December 2004 using a 160 μm mesh size plankton net, towed obliquely from the bottom to the surface. The planktonic co...

Phytoplankton distribution and their relationship to environmental variables in Sanya Bay, South China Sea

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Yanying Zhang

2010-11-01

Full Text Available Phytoplankton quantification was conducted in Sanya Bay from January 2005 to February 2006. A submersible in situ spectrofluorometer, which permits the differentiation of four algal groups (green algae, diatoms and dinoflagellates, cryptophytes and cyanobacteria was used. Seasonal variation of total chlorophyll a concentration showed that high value appeared in summer and low concentration occurred in spring. Diatoms and dinoflagellates group was the predominant phytoplankton all year in the Bay. The stable stratification of phytoplankton vertical distribution came into being in July. During the stratification event, the total chlorophyll a concentration of deep layer was much higher than the surface; cyanobacteria and cryptophyta groups decreased and almost disappeared, however, the concentration of green algae and diatoms and dinoflagellates groups increased. In deep layer, the concentration of diatoms and dinoflagellates group increased sharply, which was about eight times more than that in the surface layer. The vertical profiles character of phytoplankton showed that from inshore stations to outer bay the stratification of phytoplankton vertical distribution gradually strengthened. Dissolved inorganic nutrient especially phosphate and inorganic nitrogen and cold-water upwelling were the main regulating factor for phytoplankton distribution.

Potential risk to wood storks (Mycteria americana) from mercury in Carolina Bay fish

International Nuclear Information System (INIS)

Brant, H.A.; Jagoe, C.H.; Snodgrass, J.W.; Bryan, A.L.; Gariboldi, J.C.

2002-01-01

Fish mercury levels from some Carolina bays pose risk to wood stork. - Carolina bays are freshwater wetlands that serve as important feeding habitats for the endangered wood stork (Mycteria americana). Water levels in these bays fluctuate greatly and tend to be acidic and rich in dissolved organic carbon (DOC), factors that favor mercury (Hg) methylation and bioaccumulation in fish. To assess potential risks to wood storks consuming mercury contaminated fish in bays, we sampled fish from 10 bays on the Savannah River Site (SRS), South Carolina, an area with documented use by wood storks. Whole body mercury concentrations in 258 fishes of three species (Erimyzon sucetta, Acantharchus pomotis and Esox americanus) commonly consumed by wood storks were determined. Risk factors for nestlings and free-ranging adults were calculated using published no and lowest observable adverse effect concentration (NOAEC and LOAEC) values for birds. Fish from higher trophic levels and those from wetlands with relatively shallow maximum depths and fluctuating water levels were more likely to exceed NOAEC and LOAEC values. Calculation of exposure rates of nestling wood storks indicated they are at highest risk during the first 10 days of the nestling period. These calculations suggest that there is potential concern for wood storks foraging in relatively shallow bays with fluctuating water levels, even though there is no obvious local source of mercury to these wetlands

Mercury pollution in sediments, benthic organisms and inshore fishes of Haifa Bay, Israel

Energy Technology Data Exchange (ETDEWEB)

Hornung, H; Krumgalz, B S; Cohen, Y

1984-01-01

Total mercury concentrations were determined in surficial sediments, eleven species of benthic organisms and six species of fish from Haifa Bay, Israel. The results show that essentially all of the shallow water zone of the Bay receives anthropogenic mercury. A mercury-cell chlor-alkali plant was identified as the source of pollution. Surficial sediments in vicinity of the plant, containing up to 0.99 micro-g Hg/g dry weight, were up to 157 times enriched in mercury relative to an unpolluted area. Mercury levels in the benthic organisms reflected the levels in the sediments. Maximal concentrations reaching 38.7 and 18.2 micro-g Hg/g dry weight were found in the carnivorous gastropod mollusks Arcularia circumcinta and Arcularia gibbosula, respectively. In all fish species, specimens caught in Haifa Bay had higher mercury concentrations in the muscle tissue than specimens caught south of the Bay. A maximal value of 1.66 micro-g Hg/g wet weight was recorded in Diplodus sargus. 17 references, 3 figures, 3 tables.

Mercury dynamics in a coastal aquifer: Maunalua Bay, O´ahu, Hawai´i

Science.gov (United States)

Ganguli, Priya M.; Swarzenski, Peter W.; Dulaiova, Henrieta; Glenn, Craig R.; Flegal, A. Russell

2014-03-01

We evaluated the influence of groundwater-seawater interaction on mercury dynamics in Maunalua Bay, a coral reef ecosystem located on the south shore of O´ahu, Hawai´i, by combining geochemical data with submarine groundwater discharge (SGD) rates. During a rising tide, unfiltered total mercury (U-HgT) concentrations in seawater increased from ˜6 to 20 pM at Black Point (west Bay) and from ˜2.5 to 8 pM at Niu (central Bay). We attribute this change to an increase in suspended particulate matter at high tide. Approximately 90% of mercury in groundwater at Niu was in the filtered (weighted average Maunalua Bay groundwater mercury flux of 0.68 ± 0.67 mol yr-1 by combining the proportional flux of F-HgT from three distinct SGD zones, and place these results into a broader context by comparing and contrasting flux estimates from locations around the world. Results from existing SGD studies should be evaluated to develop future sampling strategies that address more targeted questions about mercury biogeochemical cycling at the groundwater-seawater interface.

The influence of seagrass on shell layers and Florida Bay mudbanks

Science.gov (United States)

Prager, E.J.; Halley, R.B.

1999-01-01

Aerial photography indicates that sometime since the early 1970's, an emergent ridge of shell debris developed on a mudbank north of Calusa Key in Florida Bay. Coarse shell deposits on and within the Bay's shallow mudbanks are believed to be the product of transport during major storm events and subsequent winnowing. However, shell material from the ridge contains nuclear bomb 14C, supporting formation within the past 30 years and the last major hurricanes to influence Florida Bay were Donna and Betsy (1960 and 1965). Results from this study suggest that the Calusa ridge and other coarse shell deposits in Florida Bay can result from, 1) periodic seagrass mortality and wave-induced transport during frequent winter cold fronts and/or 2) mollusc blooms and subsequent burial. A survey of bottom types indicates that dense to intermediate beds of seagrass, mainly Thalassia testudinum (turtle grass), occur within the shallow basins of western Florida Bay and along the margins of Bay mudbanks. Wave measurements and modeling indicate that Thalassia along mudbank margins can reduce incoming wave-energy by over 80%. Seagrass beds also host particularly dense populations of molluscs from periodic 'blooms' and are believed to be the major source of coarse sediments in the Bay. Thus, if bank-edge seagrass dies, sediments, including shell debris, become exposed and subject to greatly increased wave energy. Modeling indicates that winds typical of winter cold fronts in South Florida can produce near-bottom velocities and shear stress at a grass-free bank edge which are sufficient to transport coarse carbonate grains. Shell layers found at depth in mudbank cores can also be explained by previous episodes of sediment accretion over mollusc-rich seagrass beds or grass bed mortality at the edge of a mudbank and shell transport during cold front passage. The latter implies that mortality of marginal seagrass beds has occurred throughout the history of Florida Bay and that the

Export of a Winter Shelf Phytoplankton Bloom at the Shelf Margin of Long Bay (South Atlantic Bight, USA)

Science.gov (United States)

Nelson, J.; Seim, H.; Edwards, C. R.; Lockhart, S.; Moore, T.; Robertson, C. Y.; Amft, J.

2016-02-01

A winter 2012 field study off Long Bay (seaward of Myrtle Beach, South Carolina) investigated exchange processes along the shelf margin. Topics addressed included mechanisms of nutrient input (upper slope to outer shelf), phytoplankton blooms and community characteristics (mid-to-outer shelf), and possible export of shelf bloom material (transport to and across the shelf break to the upper slope). Observations utilized three moorings (mid-shelf, shelf break, upper slope), two gliders and ship operations (repeat cruises with profiling, water sampling and towed body surveys) along with satellite SST and ocean color imagery and near-by NOAA buoy records. Here we focus on the late January to early February period, when a mid-shelf bloom of Phaeocystis globosa (which forms large gelatinous colonies) was transported to the shelf break. The presence of Phaeocystis colonies resulted in strong spiking in chlorophyll (chl) fluorescence profiles. A partitioning approach was adapted to estimate chl in colonies (spikes) and small forms (baseline signal) and to account for an apparent difference in measured in vivo fluorescence per unit chl (lower in colonies). Up to 40-50% of chl in the bloom (surface to bottom on the mid-shelf) was estimated to be in the colonies. In late January, there a pronounced seaward slumping of relatively dense mid-shelf water along the bottom under warmer surface water derived from the inshore edge of a broad jet of Gulf Stream water flowing southwestward along the upper slope. We describe the evolution of this event and the conditions which set up this mechanism for episodic near-bed transport of fresh bloom material produced on the shelf to the upper slope off Long Bay. Down-slope transport may have been enhanced in this case by the high phytoplankton biomass in gelatinous colonies, which appeared to be settling in the water column on the shelf prior to the transport event.

Penapisan Bakteri yang Diisolasi dari Tambak Udang sebagai Kandidat Probiotik pada Budi daya Udang Windu, Penaeus monodon

Directory of Open Access Journals (Sweden)

Muliani Muliani

2016-11-01

Full Text Available Penelitian ini bertujuan mendapatkan bakteri probiotik untuk budi daya udang windu P. monodon. Penelitian meliputi beberapa tahapan yaitu (1 isolasi bakteri dari tambak udang; (2 uji daya hambat terhadap Vibrio  harveyi; (3 karakterisasi secara fisiologi dan biokimia; (4 pertumbuhan bakteri pada beberapa konsentrasi NaCl; (5 pertumbuhan bakteri pada beberapa tingkat salinitas; (6 uji patogenisitas bakteri terhadap pascalarva udang windu; (7 uji tantang dengan V. harveyi dalam wadah pemeliharaan pascalarva udang windu; dan (8 analisis gen 16S-rRNA bakteri yang diisolasi dari tambak. Sedikitnya 14 isolat dari 2.228 isolat bakteri yang diisolasi dari tambak, potensial dijadikan probiotik pada budi daya udang windu. Sintasan udang windu tertinggi pada perlakuan yang menggunakan isolat BN2067. Isolat BT950 dan BT95 paling potensial menghambat pertumbuhan V. harveyi baik secara In vitro maupun In vivo. Hasil analisis gen 16Sr-RNA menunjukkan bahwa BT950 dan BT951 termasuk dalam kelompok Brevibacillus sp., sedangkan BN2067 termasuk dalam kelompok Vibrio vulnificus CMCP6 chr. This experiment was aimed for finding-out probiotic bacteria on tiger shrimp P. monodon culture. The research included several steps i.e. 1 isolation of bacteria from tiger shrimp pond; 2 inhibition test of  bacteria against V. harveyi; 3 biochemical and physiological characterization; 4 growth of bacteria at different concentration of NaCl; (5 growth of bacteria at different salinities; (6 pathogenicity test of bacteria to tiger shrimp post larvae, (7 challenge test of bacteria against V. harveyi in tiger shrimp culture media; (8 16S-rRNA gene analysis of  bacteria isolated from shrimp pond. Fourteen isolates of 2,228 isolates of bacteria isolated from tiger shrimp pond were potential for probiotic bacteria on tiger shrimp culture. The highest survival rate of tiger shrimp was obtained from those treated with BN2067 isolate. The potential isolates to inhibit V. harveyi both In

Developing a community owned wind farm, with social and economic benefits for a low-income community, at St Helena Bay, Western Cape, South Africa

Energy Technology Data Exchange (ETDEWEB)

Lewin, J. [Seeland Development Trust (South Africa); Chown, D. [Genesis Eco-Energy, Cape Town (South Africa); Townsend, N. [Oxfam (United Kingdom)

2008-07-01

This paper described the development of a wind farm at St. Helena Bay in South Africa that involved the collaboration of the Seeland Development Trust, Genesis Eco-Energy and Oxfam. Some of the challenges that have emerged were presented along with the solutions that have been found to those problems, many of which are applicable to other communities attempting to undertake a similar project. The primary objective of this project was to develop a substantially community owned, renewable energy power project, from which revenues will be used to contribute to a range of social and economic development projects. The project, which is in the early stages of development, will have additional benefits, such as job creation, reductions in carbon dioxide emissions, development of alternative financial models for the development of renewable energy and the demonstration of renewable energy as an economically viable opportunity in South Africa. The project site was acquired by the Seeland Development Trust under the South African Government's land restitution process, and is to be used to address issues of poverty, economic development and job creation. This paper described the unique partnership of a local community, a private sector company and a global charity, and presented the business and ownership models that have been developed to achieve the overall objective of the wind energy project.

Remotely Sensing Pollution: Detection and Monitoring of PCBs in the San Francisco Bay

Science.gov (United States)

Hilton, A.; Kudela, R. M.; Bausell, J.

2016-12-01

While the EPA banned polychlorinated biphenyls (PCBs) in 1977, they continue to persist in San Francisco Bay (SF Bay), often at dangerously high concentrations due to their long half-life. However, in spite of their associated health and environmental risks, PCB monitoring within SF Bay is extremely limited, due in large part to the high costs, both in terms of labor and capital that are associated with it. In this study, a cost effective alternative to in-situ PCB sampling is presented by demonstrating the feasibility of PCB detection via remote sensing. This was done by first establishing relationships between in-situ measurements of sum of 40 PCB concentrations and total suspended sediment concentration (SSC) collected from 1998-2006 at 37 stations distributed throughout SF Bay. A correlation was discovered for all stations at (R2 =0.32), which improved markedly upon partitioning stations into north bay, (R2 =0.64), central bay (R2 =0.80) and south bay (R2 =0.52) regions. SSC was then compared from three USGS monitoring stations with temporally consistent Landsat 8 imagery. The resulting correlation between Landsat 8 (Rrs 654) and SSC measured at USGS stations (R2 =0.50) was validated using an Airborne Visible/ Infrared Imaging Spectrometer (AVIRIS) image. The end product is a two-step empirical algorithm that can derive PCB from Landsat 8 imagery within SF Bay. This algorithm can generate spatial PCB concentration maps for SF Bay, which can in turn be utilized to increase ability to forecast PCB concentration. The observation that correlation between AVIRIS (Rrs 657) and SSC was stronger than that of Landsat 8 suggests that the accuracy of this algorithm could be enhanced with improved atmospheric correction.

Bat response to carolina bays and wetland restoration in the southeastern U.S. Coastal Plain.

Energy Technology Data Exchange (ETDEWEB)

Menzel, Jennifer M.; Michael A. Menzel; John C. Kilgo; W. Mark Ford; ; John W. Edwards.

2005-09-01

Abstract: Bat activity in the southeastern United States is concentrated over riparian areas and wetland habitats. The restoration and creation of wetlands for mitigation purposes is becoming common in the Southeast. Understanding the effects of these restoration efforts on wetland flora and fauna is thus becoming increasingly important. Because bats (Order: Chiroptera) consist of many species that are of conservation concern and are commonly associated with wetland and riparian habitats in the Southeast (making them a good general indicator for the condition of wetland habitats), we monitored bat activity over restored and reference Carolina bays surrounded by pine savanna (Pinus spp.) or mixed pine-hardwood habitat types at the Savannah River Site in South Carolina. In order to determine how wetland restoration efforts affected the bat community, we monitored bat activity above drained Carolina bays pre- and post-restoration. Our results indicate that bat activity was greater over reference (i.e., undrained) than drained bays prior to the restorative efforts. One year following combined hydrologic and vegetation treatment, however, bat activity was generally greater over restored than reference bays. Bat activity was also greater over both reference and restored bays than in random, forested interior locations. We found significantly more bat activity after restoration than prior to restoration for all but one species in the treatment bays, suggesting that Carolina bay restoration can have almost immediate positive impacts on bat activity.

Hydrography and circulation in the western Bay of Bengal during the northeast monsoon

Digital Repository Service at National Institute of Oceanography (India)

Shetye, S.R.; Gouveia, A.D.; Shankar, D.; Shenoi, S.S.C.; Vinayachandran, P.N.; Sundar, D.; Michael, G.S.; Nampoothiri, G.

, the transport is 7.7 x 10 sup(6) m sup(3) s sup(-1) . Recent model studies lead us to conclude that the EICC during the northeast monsoon is driven by winds along the east coast of India and Ekman pumping in the interior bay. In the south, Ekman pumping over...

Investigation of the height dependency of optical turbulence in the surface layer over False Bay (South Africa)

Science.gov (United States)

Sprung, Detlev; van Eijk, Alexander M. J.; Günter, Willie; Griffith, Derek; Eisele, Christian; Sucher, Erik; Seiffer, Dirk; Stein, Karin

2017-09-01

Atmospheric turbulence impacts on the propagation of electro-optical radiation. Typical manifestations of optical turbulence are scintillation (intensity fluctuations), beam wander and (for laser systems) reduction of beam quality. For longer propagation channels, it is important to characterize the vertical and horizontal distribution (inhomogeneity) of the optical turbulence. In the framework of the First European South African Transmission ExpeRiment (FESTER) optical turbulence was measured between June 2015 and February 2016 over a 1.8 km over-water link over False Bay. The link ran from the Institute of Maritime Technology (IMT) at Simons Town to the lighthouse at Roman Rock Island. Three Boundary layer scintillometers (BLS900) allowed assessing the vertical distribution of optical turbulence at three different heights between 5 and 12 m above the water surface. The expected decrease with Cn2 with height is not always found. These results are analyzed in terms of the meteorological scenario, and a comparison is made with a fourth optical link providing optical turbulence data over a 8.69 km path from IMT to St. James, roughly perpendicular to the three 1.8 km paths.

The Effect of Coastal Development on Storm Surge Flooding in Biscayne Bay, Florida, USA (Invited)

Science.gov (United States)

Zhang, K.; Liu, H.; Li, Y.

2013-12-01

Barrier islands and associated bays along the Atlantic and Gulf Coasts are a favorite place for both living and visiting. Many of them are vulnerable to storm surge flooding because of low elevations and constantly being subjected to the impacts of storms. The population increase and urban development along the barrier coast have altered the shoreline configuration, resulting in a dramatic change in the coastal flooding pattern in some areas. Here we present such a case based on numerical simulations of storm surge flooding caused by the1926 hurricane in the densely populated area surrounding Biscayne Bay in Miami, Florida. The construction of harbor and navigation channels, and the development of real estate and the roads connecting islands along Biscayne Bay have changed the geometry of Biscayne Bay since 1910s. Storm surge simulations show that the Port of Miami and Dodge Island constructed by human after 1950 play an important role in changing storm surge inundation pattern along Biscayne Bay. Dodge Island enhances storm surge and increases inundation in the area south of the island, especially at the mouth of Miami River (Downtown of Miami), and reduces storm surge flooding in the area north of the island, especially in Miami Beach. If the Hurricane Miami of 1926 happened today, the flooding area would be reduced by 55% and 20% in the Miami Beach and North Miami areas, respectively. Consequently, it would prevent 400 million of property and 10 thousand people from surge flooding according to 2010 U.S census and 2007 property tax data. Meanwhile, storm water would penetrate further inland south of Dodge Island and increase the flooding area by 25% in the Miami River and Downtown Miami areas. As a result, 200 million of property and five thousand people would be impacted by storm surge.

Occurrence and distribution of antibiotics in coastal water of the Bohai Bay, China: Impacts of river discharge and aquaculture activities

International Nuclear Information System (INIS)

Zou Shichun; Xu Weihai; Zhang Ruijie; Tang Jianhui; Chen Yingjun; Zhang Gan

2011-01-01

The presence of 21 antibiotics in six different groups was investigated in coastal water of the Bohai Bay. Meantime, to illuminate the potential effects caused by the river discharge and aquaculture activities, wastewater from three breeding plants and surface water from six rivers flowing into the Bohai Bay were also analyzed for the selected antibiotics. The result revealed that measured antibiotics in the North Bobai Bay were generally higher than those in the South, highlighting the remarkable effects of high density of human activities on the exposure of antibiotics in environment. The antibiotics found in the six rivers were generally higher than those in the Bohai Bay reflecting the important antibiotics source of river discharge. This study reveals that the high consumption of some antibiotics in aquaculture activities may pose high ecological risk to the bay. - Highlights: → Some antibiotics were ubiquitous with high concentration in the Bohai bay, North China. → The antibiotics were mainly from the six rivers discharge around the Bay. → Antibiotics are commonly used in aquaculture activities around the Bay. → Aquaculture was suggested to be an important antibiotics source in the Bay. - River discharge and aquaculture were suggested to be important sources for antibiotics occurred in the coastal water of the Bohai Bay, North China.

Effects of human disturbance on waterbird nesting and reproductive success at restoration pond SF2, south San Francisco Bay, California

Science.gov (United States)

Ackerman, Joshua T.; Herzog, Mark P.; Hartman, Christopher A.

2014-01-01

To offset for the loss of managed pond habitat during restoration of wetlands to tidal marsh, the South Bay Salt Pond (SBSP) Restoration Project is enhancing some of the remaining ponds by constructing islands for roosting and nesting waterbirds. Among these wetland habitats, the SBSP Restoration Project also is installing walking trails and viewing platforms in an effort to bring the public closer to nature. In winter of 2010–11, the SBSP Restoration Project constructed 30 islands in Pond SF2 and walking trails and viewing platforms around the edge of the pond. The restoration project partners acknowledged that human disturbance could detrimentally affect nesting and roosting waterbirds. Although optimal buffer distances and potential for human disturbance were unknown, islands in Pond SF2, nevertheless, were designed with built-in buffers of greater than 300 feet (91 meters) from a trail and 600 feet (182 meters) from a viewing platform in order to minimize potential human disturbances.

Research objectives to support the South Florida Ecosystem Restoration initiative-Water Conservation Areas, Lake Okeechobee, and the East/West waterways

OpenAIRE

Kitchens, Wiley M.

1994-01-01

The South Florida Ecosystem encompasses an area of approximately 28,000 km2 comprising at least 11 major physiographic provinces, including the Kissimmee River Valley, Lake Okeechobee, the Immokalee Rise, the Big Cypress, the Everglades, Florida Bay, the Atlantic Coastal Ridge, Biscayne Bay, the Florida Keys, the Florida Reef Tract, and nearshore coastal waters. South Florida is a heterogeneous system of wetlands, uplands, coastal areas, and marine areas, dominated by the watershe...

Biodiversity inventories and conservation of the marine fishes of Bootless Bay, Papua New Guinea

Science.gov (United States)

2012-01-01

Background The effective management and conservation of biodiversity is predicated on clearly defined conservation targets. Species number is frequently used as a metric for conservation prioritization and monitoring changes in ecosystem health. We conducted a series of synoptic surveys focusing on the fishes of the Bootless Bay region of Papua New Guinea to generate a checklist of fishes of the region. Bootless Bay lies directly south of Port Moresby, the capital of Papua New Guinea, and experiences the highest human population density of any marine area in the country. Our checklist will set a baseline against which future environmental changes can be tracked. Results We generated a checklist of 488 fish species in 72 families found in Bootless Bay during a two-week sampling effort. Using incident-based methods of species estimation, we extrapolate there to be approximately 940 fish species in Bootless Bay, one of the lowest reported numbers in Papua New Guinea. Conclusions Our data suggest that the Bootless Bay ecosystem of Papua New Guinea, while diverse in absolute terms, has lower fish biodiversity compared to other shallow marine areas within the country. These differences in faunal diversity are most likely a combination of unequal sampling effort as well as biophysical factors within Bootless Bay compounded by historical and/or contemporary anthropogenic disturbances. PMID:22849436

Biodiversity inventories and conservation of the marine fishes of Bootless Bay, Papua New Guinea

Directory of Open Access Journals (Sweden)

Drew Joshua A

2012-08-01

Full Text Available Abstract Background The effective management and conservation of biodiversity is predicated on clearly defined conservation targets. Species number is frequently used as a metric for conservation prioritization and monitoring changes in ecosystem health. We conducted a series of synoptic surveys focusing on the fishes of the Bootless Bay region of Papua New Guinea to generate a checklist of fishes of the region. Bootless Bay lies directly south of Port Moresby, the capital of Papua New Guinea, and experiences the highest human population density of any marine area in the country. Our checklist will set a baseline against which future environmental changes can be tracked. Results We generated a checklist of 488 fish species in 72 families found in Bootless Bay during a two-week sampling effort. Using incident-based methods of species estimation, we extrapolate there to be approximately 940 fish species in Bootless Bay, one of the lowest reported numbers in Papua New Guinea. Conclusions Our data suggest that the Bootless Bay ecosystem of Papua New Guinea, while diverse in absolute terms, has lower fish biodiversity compared to other shallow marine areas within the country. These differences in faunal diversity are most likely a combination of unequal sampling effort as well as biophysical factors within Bootless Bay compounded by historical and/or contemporary anthropogenic disturbances.

33 CFR 110.194a - Mobile Bay, Ala., and Mississippi Sound, Miss.

Science.gov (United States)

2010-07-01

... Sound, Miss. 110.194a Section 110.194a Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF... Mississippi Sound, Miss. (a) The anchorage grounds. (1) The waters of lower Mobile Bay, near Cedar Point... south by latitude 30°20′00″, and on the west by longitude 88°06′00″. (2) The waters of Mississippi Sound...

PENGARUH KOMITMEN KERJA DAN PENGUASAAN TEKNOLOGI TERHADAP PRESTASI KERJA PADA BADAN KEPEGAWAIAN DAN PENGEMBANGAN SUMBER DAYA MANUSIA KABUPATEN GOWA

Directory of Open Access Journals (Sweden)

Theovilus Agselda Marampa

2017-08-01

The results showed that there is a positive and significant influence between job commitment and technology mastery variable to work performance variable at Badan Kepegawaian dan Pengembangan Sumber Daya Manusia Kabupaten Gowa Amounted to 95.4%. This is shown from the determinant identification test results (R2 of 0.954 or 95.4% while the rest of 4.6% influenced by other factors not examined in this study.

33 CFR 100.919 - International Bay City River Roar, Bay City, MI.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false International Bay City River Roar, Bay City, MI. 100.919 Section 100.919 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF... Bay City River Roar, Bay City, MI. (a) Regulated Area. A regulated area is established to include all...

Occurrence and distribution of antibiotics in coastal water of the Bohai Bay, China: impacts of river discharge and aquaculture activities.

Science.gov (United States)

Zou, Shichun; Xu, Weihai; Zhang, Ruijie; Tang, Jianhui; Chen, Yingjun; Zhang, Gan

2011-10-01

The presence of 21 antibiotics in six different groups was investigated in coastal water of the Bohai Bay. Meantime, to illuminate the potential effects caused by the river discharge and aquaculture activities, wastewater from three breeding plants and surface water from six rivers flowing into the Bohai Bay were also analyzed for the selected antibiotics. The result revealed that measured antibiotics in the North Bobai Bay were generally higher than those in the South, highlighting the remarkable effects of high density of human activities on the exposure of antibiotics in environment. The antibiotics found in the six rivers were generally higher than those in the Bohai Bay reflecting the important antibiotics source of river discharge. This study reveals that the high consumption of some antibiotics in aquaculture activities may pose high ecological risk to the bay. Copyright © 2011 Elsevier Ltd. All rights reserved.

Mercury dynamics in a coastal aquifer: Maunalua Bay, Oʻahu, Hawaiʻi

Science.gov (United States)

Ganguli, Priya M.; Swarzenski, Peter W.; Dulaiova, Henrieta; Glenn, Craig R.; Flegal, A. Russell

2014-01-01

We evaluated the influence of groundwater–seawater interaction on mercury dynamics in Maunalua Bay, a coral reef ecosystem located on the south shore of Oʻahu, Hawaiʻi, by combining geochemical data with submarine groundwater discharge (SGD) rates. During a rising tide, unfiltered total mercury (U-HgT) concentrations in seawater increased from ∼6 to 20 pM at Black Point (west Bay) and from ∼2.5 to 8 pM at Niu (central Bay). We attribute this change to an increase in suspended particulate matter at high tide. Approximately 90% of mercury in groundwater at Niu was in the filtered (weighted average Maunalua Bay groundwater mercury flux of 0.68 ± 0.67 mol yr−1 by combining the proportional flux of F-HgT from three distinct SGD zones, and place these results into a broader context by comparing and contrasting flux estimates from locations around the world. Results from existing SGD studies should be evaluated to develop future sampling strategies that address more targeted questions about mercury biogeochemical cycling at the groundwater–seawater interface.

Perubahan Daya Dukung Lingkungan di Wilayah Pinggiran Kota (Kasus : Kecamatan Kecamatan yang Berbatasan dengan Kota Yogyakarta, Tahun 1990–2008

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Joni Purwo Handoyo

2016-09-01

Full Text Available ABSTRAK Salah satu dampak perkembangan wilayah pinggiran kota adalah terjadinya perubahan daya dukung lingkungan. Penelitian ini bertujuan untuk mengetahui besaran, persebaran dan pola sebaran perubahan daya dukung lingkungan serta mengkaji keterkaitannya dengan perubahan tipology wilayah pinggiran kota. Penelitian ini dilakukan di 29 desa yang berada di 6 kecamatan yang berbatasan langsung dengan Kota Yogyakarta dengan unit analisis 'desa'. Penelitian ini merupakan jenis penelitian kasus dengan karakteristik obyek penelitian yang bersifat survey analisis dan historis dengan penekanan pada pendekatan kronologis. Hasil penelitian menunjukkan bahwa perkembangan lahan terbangun paling pesat terjadi di Desa Tirtonirmolo dan Desa Ngestiharjo (>20%. Status daya dukung lingkungan di wilayah penelitian sebagian besar masih termasuk dalam katagori sustain. Laju penurunan paling cepat terjadi di Desa Maguwoharjo dan Desa Singosaren. Fenomena ini dipengaruhi oleh faktor peningkatan lahan terbangun yang sekaligus juga menjadi faktor pengaruh paling penting terhadap perubahan tipologi desa-desa pinggiran Kota Yogyakarta.   ABSTRACT  The one of regional development impact in urban fringe area is the change of environmental carrying capacity. This research aims to know about magnitude value, desperation and distribution patternsof the change ofenvironmental carrying capacity and also to examining that relation with the change of urban fringe regional topology. This research is conducted in 29 villages in 6 sub-districts that are directly adjacent to Yogyakarta city with the unit of analysis is ''village ''. This research categorized the case research with the characteristic of research object is analytical survey and historical method with the intens is chronological approach. The research shows that the most rapid built up land use development is in Tirtonirmolo and Ngestiharjo village (>20%. This research discovers that the status of most of environmental

Development of a virtual wave buoy system for the Port of Cape Town, South Africa

CSIR Research Space (South Africa)

Rossouw, Marius

2005-07-01

Full Text Available The Port of Cape Town is located in Table Bay on the south-west coast of South Africa. Since the port experiences advese weather conditions, especially during the winter period, the monitoring of marine weather and wave conditions forms an integral...

ANALISIS PARITAS DAYA BELI KURS RUPIAH TERHADAP DOLLAR AMERIKA SERIKAT

Directory of Open Access Journals (Sweden)

Elysa Pernika Simanjuntak

2017-06-01

Full Text Available Penelitian ini bertujuan untuk menganalisis bagaimana penerapan teori paritas daya beli kurs Rupiah terhadap Dollar AS dalam jangka panjang maupun jangka pendek dan pengaruh tingkat inflasi, produk domestik bruto, jumlah uang beredar, dan cadangan devisa terhadap kurs Rp/USD dengan menggunakan alat analisis Error Correction Model Engle-Granger. Variabel dependen dalam penelitian ini adalah kurs, sedangkan variabel independennya adalah inflasi, produk domesti bruto, jumlah uang beredar, dan cadangan devisa. Hasil penelitian ini menunjukkan bahwa dalam jangka panjang maupun jangka pendek, teori paritas daya beli berlaku pada kurs Rupiah terhadap Dollar Amerika Serikat. Variabel independen secara bersama-sama berpengaruh terhadap kurs Rupiah dalam jangka pendek maupun jangka panjang kecuali variabel jumlah uang beredar tidak berpengaruh dalam jangka panjang dan cadangan devisa tidak berpengaruh terhadap kurs dalam jangka pendek. Rekomendasi dari penelitian ini adalah Bank Indonesia selaku bank sentral Republik Indonesia diharapkan lebih berhati- hati dalam mengambil kebijakan yang tepat demi menjaga kestabilan nilai tukar Rupiah. Salah satunya tetap mengawasi kebijakan yang ditetapkan pemerintah mengenai pemakaian Rupiah untuk seluruh transaksi dalam negeri.  This research aims to analyze how the application of the theory of purchasing power parity exchange rate of the Rupiah against the US Dollar in the long term and short term and influence the rate of inflation, GDP, money supply, and the foreign exchange reserves of the exchange rate of Rp/USD by using analytical tools Error Correction Model Engle-Granger. Dependent variable in this study is the exchange rate, while the independent variables are inflation, gross domestic product, money supply, and the foreign exchange reserves. The results of this study indicated that in the long term and short term, the theory of purchasing power parity exchange rate prevailing at the Rupiah against the US

Geology and structure of the North Boqueron Bay-Punta Montalva Fault System

Science.gov (United States)

Roig Silva, Coral Marie

The North Boqueron Bay-Punta Montalva Fault Zone is an active fault system that cuts across the Lajas Valley in southwestern Puerto Rico. The fault zone has been recognized and mapped based upon detailed analysis of geophysical data, satellite images and field mapping. The fault zone consists of a series of Cretaceous bedrock faults that reactivated and deformed Miocene limestone and Quaternary alluvial fan sediments. The fault zone is seismically active (ML < 5.0) with numerous locally felt earthquakes. Focal mechanism solutions and structural field data suggest strain partitioning with predominantly east-west left-lateral displacements with small normal faults oriented mostly toward the northeast. Evidence for recent displacement consists of fractures and small normal faults oriented mostly northeast found in intermittent streams that cut through the Quaternary alluvial fan deposits along the southern margin of the Lajas Valley, Areas of preferred erosion, within the alluvial fan, trend toward the west-northwest parallel to the on-land projection of the North Boqueron Bay Fault. Beyond the faulted alluvial fan and southeast of the Lajas Valley, the Northern Boqueron Bay Fault joins with the Punta Montalva Fault. The Punta Montalva Fault is defined by a strong topographic WNW lineament along which stream channels are displaced left laterally 200 meters and Miocene strata are steeply tilted to the south. Along the western end of the fault zone in northern Boqueron Bay, the older strata are only tilted 3° south and are covered by flat lying Holocene sediments. Focal mechanisms solutions along the western end suggest NW-SE shortening, which is inconsistent with left lateral strain partitioning along the fault zone. The limited deformation of older strata and inconsistent strain partitioning may be explained by a westerly propagation of the fault system from the southwest end. The limited geomorphic structural expression along the North Boqueron Bay Fault segment

PENGARUH BUKTI FISIK, KEANDALAN, DAYA TANGGAP, JAMINAN, DAN EMPATI TERHADAP KEPUASAN PENGGUNA JASA UPT PERPUSTAKAAN UNIVERSITAS NEGERI SEMARANG

Directory of Open Access Journals (Sweden)

Arum Novitasari

2014-06-01

Full Text Available Penelitian ini bertujuan untuk mengetahui apakah dimensi kualitas pelayanan yaitu bukti fisik, keandalan, daya tanggap, jaminan, dan empati berpengaruh terhadap kepuasan pengguna jasa UPT Pepustakaan Universitas Negeri Semarang. Responden dalam penelitian ini adalah pengguna jasa UPT Perpustakaan Unnes dengan sampel sebanyak 177 responden. Pengambilan data menggunakan kuesioner yang disusun berdasarkan variabel-variabel penelitian. Teknik pengambilan data dengan Non-Probability Sampling dengan pendekatan Accidental Sampling. Teknik analisis data menggunakan analisis deskriptif persentase, analisis regresi linier berganda, analisis uji asumsi klasik, dan analisis uji hipotesis. Analisis regresi berganda menunjukkan bahwa ada pengaruh bukti fisik, keandalan, daya tanggap, jaminan, dan empati terhadap kepuasan pengguna jasa UPT Perpustakaan Universitas Negeri Semarang. This research conducted in order to analyze the quality dimension which is a tangibles, reliability, responsiveness, assurance and empathy that affect user satisfaction of library Semarang State University. The research is users of library Semarang State University that are 177 respondents. The data taken uses questioner arranged according to research variables. The data taken uses Non-Probability Sampling techniques with Accidental Sampling approach so that the sample taken accidently. The analysis data technique are percentage descriptive, multiple linear regression, the classical assumption test, and hypothesis testing analysis. Multiple regression analysiss shows there is an influence of tangibles, reliability, responsiveness, assurance, and empathy of user satisfaction of library Semarang State University.

A comparative study of the accumulation of metals in the barnacle (Tetraclita serrata and the black mussel (Choromytilis meridionalis in False Bay, South Africa

Directory of Open Access Journals (Sweden)

Adriaan J. Reinecke

2014-02-01

Full Text Available The development of methods to monitor the South African coastal waters offer major challenges. Knowledge and availability of suitable species that may serve as biomonitors will be valuable to obtain information to support good management decisions. It is therefore important to identify local species that show the basic characteristics required for biomonitoring. The aim of this study was to compare, as part of a wider seasonal field study of metals in the intertidal zone of False Bay, South Africa, the body loads of copper (Cu, nickel (Ni, lead (Pb, cadmium (Cd and zinc (Zn in the black mussel (C. meridionalis and the barnacle (T. serrata, and to compare these with environmental concentrations. Also to draw conclusions about the animals’ relative abilities to accumulate priority metals. Specimens of both species were collected over several seasons at different points in False Bay and analysed chemically. The mean body load (soft tissue and shell of metals was higher in the black mussel than in the barnacle during all seasons. A comparison between the body loads and environmental concentrations in water and sediment showed that the priority metals Cd, Ni and Pb are accumulated strongly by both C. meridionalis and T. serrata. The mean Cd body loads varied between 6.43 µg/g and 14.73 µg/g for the various seasons but was not statistically significantly different between seasons. Metal concentrations were in most cases highest during winter. Multiple regression analysis showed a strong correlation between body load of metals in the black mussel and the environmental concentration for most seasons, which indicates that the black mussel can be useful as an active rather than a passive biomonitor. The concept of biomonitoring has merit because it may show long-term tendencies, but it does not offer an absolute measure of immediate, varying pollution levels. It could serve as an additional management tool in a national marine programme for the

77 FR 2972 - Thunder Bay Power Company, Thunder Bay Power, LLC, et al.

Science.gov (United States)

2012-01-20

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Thunder Bay Power Company, Thunder Bay Power, LLC, et al.; Notice of Application for Transfer of Licenses, and Soliciting Comments and Motions To Intervene Thunder Bay Power Company Project No. 2404-095 Thunder Bay Power, LLC Midwest Hydro, Inc...

Holy grail at Baglan Bay

International Nuclear Information System (INIS)

Watson, Jim

1999-01-01

The UK government's consent for the construction of a gas-fired power plant at Baglan Bay in South Wales is reported, and the growing popularity of economic combined-cycle gas turbine (CCGT) power plants and the resulting environmental improvements are noted . The combining of gas and steam turbines, design developments, and the UK moratorium on planning consents for gas fired power plants are discussed. General Electric's H System technology which will lower the amount of energy lost in the conversion of natural gas to electricity is described, and details of the ten most problematic CCGTs in the UK are given. The domination of the CCGT global market by four manufacturers, and the pressure on manufacturers to develop their designs are considered. (UK)

Uji Daya Hambat Ekstrak Buah Belimbing Manis (Averrhoa carambola terhadap Pertumbuhan Bakteri Streptococcus pneumoniae secara In Vitro

Directory of Open Access Journals (Sweden)

Rita Risandi

2016-09-01

Full Text Available AbstrakBuah belimbing manis (Averrhoa carambola merupakan salah satu tanaman Indonesia yang diyakini memiliki khasiat obat. Salah satu manfaat yang dapat diambil dari sari buah belimbing manis (Averrhoa carambola adalah dapat mengobati radang tenggorokan. Radang tenggorokan merupakan salah satu infeksi yang disebabkan oleh bakteri Streptococcus pneumoniae. Tujuan penelitian ini adalah menentukan daya hambat ekstrak buah belimbing manis (Averrhoa carambola terhadap pertumbuhan bakteri Streptococcus pneumoniae  secara in vitro. Metode studi ini ialah eksperimental dengan desain postest only control group design yang dilakukan di Laboratorium Biota Sumatera Universitas Andalas dan Laboratorium Mikrobiologi Fakultas Kedokteran Universitas Andalas dari Agustus sampai Oktober 2014. Hasil penelitian menunjukkan bahwa ekstrak buah belimbing manis (Averrhoa carambola dengan konsentrasi yaitu 5%, 10%, 15% dan 20% tidak memiliki daya hambat terhadap pertumbuhan bakteri Streptococcus pneumoniae.  Hal ini terbukti karena tidak terbentuk zona hambat pada agar darah dan tidak terdapat pengaruh lama kontak ekstrak buah belimbing manis (Averrhoa carambola  terhadap pertumbuhan bakteri Streptococcus pneumoniae secara in vitro. Ekstrak buah belimbing manis tidak memiliki efek antibakteri terhadap pertumbuhan bakteri Streptococcus pneumoniae.Kata kunci: ekstrak buah belimbing manis, Streptococcus pneumoniae, daya hambat Abstract             Star fruit (Averrhoa carambola is a Indonesian plant that is believed to have medicinal properties. One of the benefits that can be drawn from the juice of star fruit (Averrhoa carambola is the ability to treat strep throat. Strep throat is a bacterial infection caused by Streptococcus pneumoniae. The objective of this study was to determine the inhibitory extract of star fruit (Averrhoa carambola on the growth of the bacterium Streptococcus pneumoniae in vitro. This was an experimental  research  with design

The first commercial spent fuel shipment in China

International Nuclear Information System (INIS)

Meinert, N.M.; Xiaoqing Li

2004-01-01

In two and a half years, government regulatory agencies and contractors from three countries worked together to design, license, fabricate, and transport the first commercial spent fuel shipment in China. Their cooperative efforts helped avoid the loss of full core reserve at a nuclear power plant serving two of China's largest cities. In March 2001, Everclean Environmental Engineering Corporation (EEEC) selected NAC International (NAC) to supply two United States Nuclear Regulatory Commission (USNRC) licensed Storable Transport Casks (NACSTC) and technology support, to ensure that qualified Chinese operators would be ready to load the first cask in late 2003. EEEC is a subsidiary of China National Nuclear Corporation (CNNC), which sets nuclear policy in China. EEEC is responsible for implementing nuclear transportation policy set forth from its parent corporation. Timely implementation of EEEC's ambitious plan would avoid loss of full core reserve at Guangdong Nuclear Power Station (Daya Bay) Unit-1, which supplies power to Hong Kong and Schenzen. The spent fuel would be transported to the Lanzhou Nuclear Fuel Complex (LNFC), a reprocessing facility, approximately 4,000 kilometers Northwest of Daya Bay

Kepemimpinan Desa dan Pengelolaan Sumber Daya Alam Aras Lokal di Tiga Desa Lereng Gunung Ungaran, Jawa Tengah

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Cahyo Seftyono

2016-10-01

Full Text Available The interaction between the village leader or Lurah and citizens can be regarded as a fundamental process. Because, in this level leaders and the led will be interact intensively. This is in contrast to the higher levels of government, for example, at the district level, the city, even at the national level. At this lowest level, interaction and relations, social control, policies, support, and the rejection of the program will often occur. In the context of the wider innovation, village leaders are also required to develop social capital in managing human resource potential that exists. Therefore, the development of village- based management of village, hence, the development effort is the development that relies on strength, characteristics, and independent initiative of the village. Interaksi antara kepala desa atau lurah dan warga di aras lokal dapat dikatakan sebagai proses yang fundamental. Sebab, pada level inilah pemimpin dan yang dipimpin akan bertemudan saling berinteraksi dan berrelasi secara intensif. Hal ini berbeda dengan level pemerintahan yang lebih tinggi, misalnya pada tingkat kecamatan, kabupaten/kota, bahkan pada level nasional. Pada level terendah inilah, interaksi dan relasi, kontrol sosial, kebijakan, dukungan, maupun penolakan pro-gram akan sering terjadi. Dalam konteks inovasi yang lebih luas, pemimpin-pemimpin desa juga di-tuntut untuk mengembangkan modal sosial dalam mengelola potensi sumber daya manusia yang ada. Sebab, pembangunan desa yang dilakukan berbasis pengelolaan sumber daya desa, maka, pem-bangunan yang diupayakan adalah pembangunan yang mengandalkan pada kekuatan, karakteris-tik, dan inisiatif mandiri desa.

Yellowfin Tuna (Thunnusalbacares Fishing Ground Forecasting Model Based On Bayes Classifier In The South China Sea

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Zhou Wei-feng

2017-08-01

Full Text Available Using the yellowfin tuna (Thunnusalbacares,YFTlongline fishing catch data in the open South China Sea (SCS provided by WCPFC, the optimum interpolation sea surface temperature (OISST from CPC/NOAA and multi-satellites altimetric monthly averaged product sea surface height (SSH released by CNES, eight alternative options based on Bayes classifier were made in this paper according to different strategies on the choice of environment factors and the levels of fishing zones to classify the YFT fishing ground in the open SCS. The classification results were compared with the actual ones for validation and analyzed to know how different plans impact on classification results and precision. The results of validation showed that the precision of the eight options were 71.4%, 75%, 70.8%, 74.4%, 66.7%, 68.5%, 57.7% and 63.7% in sequence, the first to sixth among them above 65% would meet the practical application needs basically. The alternatives which use SST and SSH simultaneously as the environmental factors have higher precision than which only use single SST environmental factor, and the consideration of adding SSH can improve the model precision to a certain extent. The options which use CPUE’s mean ± standard deviation as threshold have higher precision than which use CPUE’s 33.3%-quantile and 66.7%-quantile as the threshold

Petroleum possibilities of the James Bay Lowland area: Drilling in the James Bay Lowland

Energy Technology Data Exchange (ETDEWEB)

Martison, N W

1954-12-31

Interest in the possible occurrence of petroleum and natural gas in the James Bay lowland arises from the presence there of Palaeozoic sedimentary formations resembling those in south-western Ontario. The first part of this report reviews earlier geologic surveys conducted in the lowland and reports results of field work and drill core studies 1946-51. It describes the area`s topography, climate, stratigraphy and palaeontology (Ordovician to Lower Cretaceous, plus Pleistocene and recent glacial deposits), structural geology, and evidence of petroleum. Lists of fossils and correlations are included. The appendices include a list of fossil locations and drill logs. The second part details the drilling programs carried out in the lowland by the Ontario Dept. of Mines, including detailed logs, as well as drilling carried out by some other organisations.

Numerical simulation of hydrodynamic and water quality effects of shoreline changes in Bohai Bay

Science.gov (United States)

Jia, Han; Shen, Yongming; Su, Meirong; Yu, Chunxue

2018-02-01

This study uses the HD and Ecolab modules of MIKE to simulate the hydrodynamic and water quality and predict the influence of shoreline changes in Bohai Bay, China. The study shows that shoreline changes weaken the residual current and generate a counter-clockwise circulation south of Huanghua Port, thereby resulting in weak water exchange capacity and low pollutant-diffusing capacity. Shoreline changes reduce the area of Bohai Bay, resulting in a smaller tidal prism and further weakening the water exchange capacity. This situation is not conducive to the diffusion of pollutants, and therefore may lead to increased water pollution in the bay. Shoreline changes hinder the spread of runoff, weaken the dilution effect of the river on seawater, and block the spread of coastal residual current, thereby resulting in increased salinity near the reclamation area. Shoreline changes lead to an increase in PO4-P concentration and decrease in DIN concentration. The value of N/P near the project decreases, thereby weakening the phosphorus-limited effect.

33 CFR 162.125 - Sturgeon Bay and the Sturgeon Bay Ship Canal, Wisc.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Sturgeon Bay and the Sturgeon Bay Ship Canal, Wisc. 162.125 Section 162.125 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY INLAND WATERWAYS NAVIGATION REGULATIONS § 162.125 Sturgeon Bay and the Sturgeon Bay Ship...

Origins of cryptic variation in the Ediacaran-Fortunian rhyolitic ignimbrites of the Saldanha Bay Volcanic Complex, Western Cape, South Africa

Science.gov (United States)

Clemens, J. D.; Stevens, G.; Frei, D.; Joseph, C. S. A.

2017-12-01

The Saldanha eruption centre, on the West Coast of South Africa, consists of 542 Ma, intracaldera, S-type, rhyolite ignimbrites divided into the basal Saldanha Ignimbrite and the partly overlying Jacob's Bay Ignimbrite. Depleted-mantle Nd model ages suggest magma sources younger than the Early Mesoproterozoic, and located within the Neoproterozoic Malmesbury Group and Swartland complex metasedimentary and metavolcanic rocks that form the regional basement. The Sr isotope systematics suggest that the dominant source rocks were metavolcaniclastic rocks and metagreywackes, and that the magmas formed from separate batches extracted from the same heterogeneous source. No apparent magma mixing trends relate the Saldanha to the Jacob's Bay Ignimbrites, or either of these to the magmas that formed the Plankiesbaai or Tsaarsbank Ignimbrites in the neighbouring Postberg eruption centre. The magmas were extracted from their source rocks carrying small but significant proportions of peritectic and restitic accessory minerals. Variations in the content of this entrained crystal cargo were responsible for most of the chemical variations in the magmas. Although we cannot construct a cogent crystal fractionation model to relate these groups of magmas, at least some crystal fractionation occurred, as an overlay on the primary signal due to peritectic assemblage entrainment (PAE). Thus, the causes of the cryptic chemical variation among the ignimbrite magmas of the Saldanha centre are variable, but dominated by the compositions of the parent melts and PAE. The preservation of clear, source-inherited chemical signatures, in individual samples, calls into question the common interpretation of silicic calderas as having been formed in large magma reservoirs, with magma compositions shaped by magma mingling, mixing, and fractional crystallization. The Saldanha rocks suggest a more intimate connection between source and erupted magma, and perhaps indicate that silicic magmas are too

Pb’s high sedimentation inside the bay mouth of Jiaozhou Bay

Science.gov (United States)

Yang, Dongfang; Miao, Zhenqing; Huang, Xinmin; Wei, Linzhen; Feng, Ming

2017-12-01

Sedimentation is one of the key environmental behaviors of pollutants in the ocean. This paper analyzed the seasonal and temporal variations of Pb’s sedimentation process in Jiaozhou Bay in 1987. Results showed that Pb contents in bottom waters in Jiaozhou Bay in May, July and November 1987 were 1.87-2.60 μg L-1, 15.11-19.68 μg L-1 and 11.08-15.18 μg L-1, and the pollution levels of Pb in May, July and November 1987 were slight, heavy and heavy, respectively. In May 1987, there was low sedimentation process in waters in the outside of the bay mouth, yet were high sedimentation process in waters in the middle and inside of the bay mouth. In July and November 1987, there was low sedimentation process in waters in the outside of the bay mouth, yet were high sedimentation process in waters in the inside of the bay mouth. The seasonal-temporal variation of sedimentation processes of Pb were determined by the variations of sources input and the vertical water’s effect.

Salinity maxima associated with some sub-surface water masses in the upper layers of the Bay of Bengal

Digital Repository Service at National Institute of Oceanography (India)

Varadachari, V.V.R.; Murty, C.S.; Reddy, C.V.G.

The distribution of some sub-surface water masses in the western bay of Bengal during the south-west monsoon period is presented. Based on the salinity maxima and sigma t values the existence of waters of Persian Gulf and Red Sea origin could...

HEAVY METAL CONTENTS IN MARINE SEDIMENTS AND SEAWATER AT TOTOK BAY AREA, NORTH SULAWESI

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Delyuzar Ilahude

2017-07-01

Full Text Available The study area is located in north-eastern part of Tomini Bay, approximately 80 km south of Manado city, North Sulawesi. This area is closed to submarine tailing disposal system in Buyat Bay. Five marine sediment samples and four water samples from seawater and dig wells have been used for heavy metals (Hg, As, CN analyses by using Atomic Absorption Spectrometry (AAS. This study is a part of research conducted by Marine Geological Institute of Indonesia on morphological changes of seabed in the Totok Bay. The result shows that concentration of mercury (Hg in water samples taken from Ratatotok estuary is higher than standards stipulated Government Regulation (Peraturan Pemerintah/PP No. 82/2001. Meanwhile, concentration of arsenic (As is almost reaching its standard threshold, and conversely cyanide (CN concentration is low. This value of mercury (Hg concentration taken from Ratatotok estuary is much higher than water samples from of Buyat Bay estuary. Significant concentration of mercury (Hg analysed from those particular sampling sites indicated high mercury contamination. Therefore, further examination on ground water of dig wells is necessary, especially for mercury analysis (Hg. Furthermore, comparing the formerly obtained data of mercury concentration in the sediment, this particular study concludes that the sediments in the Totok Bay had contaminated by mercury from gold-processing of illegal mining.

Coastal currents and mass transport of surface sediments over the shelf regions of Monterey Bay, California

Science.gov (United States)

Wolf, S.C.

1970-01-01

In Monterey Bay, the highest concentrations of medium and fine sands occur nearshore between ten and thirty fathoms. Silt and clay accumulate in greater depths. Contours of median diameter roughly parallel the isobaths. Fine-grained materials are supplied to the bay region from erosion of cliffs which partly surround Monterey Bay, from sediment laden river discharge, and from continual reworking of widespread Pleistocene and Recent sea floor sediments. These sediments in turn are picked up by coastal currents and distributed over the shelf regions by present day current regimes. Studies of bottom currents over the shelf regions and in Monterey Canyon have revealed patterns which vary with seasonal changes. Current patterns during August and September exhibit remarkable symmetry about the axis of Monterey Submarine Canyon. Central Shelf currents north and south of Monterey Canyon flowed northwest at an average rate of 0.2 knots and south at 0.3 knots respectively. On the North Shelf between January and March currents flowed east to southeast at 0.3-0.5 knots with mirror image patterns above the South Shelf during the same period. Irregular current flow in the canyon indicates a complex current structure with frequent shifts in counterclockwise and clockwise direction over very short periods of time. Bottom topography of the canyon complex often causes localization of canyon currents. One particular observation at a depth of 51 fathoms indicated up-canyon flow at a rate of 0.2 knots. Most of the observed currents are related to seasonal variations, upwelling, ocean swell patterns, and to changes in the California and Davidson currents. Changes in current regimes are reflected in the patterns of sediment distribution and transport. Sediment transport is chiefly parallel to the isobaths, particularly on the North and South Shelf regions. Complex dispersal patterns are observed near Monterey Canyon and Moss Landing Harbor jetties. Longshore currents move sediments

Analisis Spektral Daya dan Koherensi EEG Pada Anak Penderita Autism Spectrum Disorders (ASD

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Nita Handayani

2017-12-01

Full Text Available Autism Spectrum Disorders (ASD adalah kondisi neurodevelopmental yang berkaitan dengan defisit dalam fungsi eksekutif, emosi, bahasa, dan komunikasi sosial. Beberapa teknik neuroimaging dan neurofisiologi digunakan untuk memahami hubungan antara fungsionalitas otak dan perilaku autis. Quantitative Electroencephalography (QEEG adalah sebuah teknik non-invasif yang dapat digunakan untuk memberikan gambaran fungsionalitas otak melalui beberapa besaran fisis yang dikaji. Pada paper ini akan dibahas tentang karakteristik sinyal listrik otak pada penderita austis berdasarkan analisis QEEG. Perekaman sinyal otak menggunakan Emotiv Epoc 14 channel (AF3, F7, F3, FC5, T7, P7, O1, O2, P8, T7, FC6, F4, F8, AF4 dan 2 channel referensi (CMS dan DRL. Jumlah subjek uji dalam penelitian sebanyak 6 anak penderita autis dan 5 anak sehat sebagai kontrol dengan rentang usia antara 10-15 tahun. Perekaman otak dilakukan pada kondisi rileks dan mata terutup selama 15 menit. Metode analisis data meliputi pre-processing data EEG untuk menghilangkan noise dan artefak, perhitungan spektral daya menggunakan periodogram Welch, dan analisis konektivitas fungsional otak dengan menghitung besarnya koherensi intra-hemisphere dan inter-hemisphere. Dari hasil studi diperoleh bahwa pada anak autis terjadi peningkatan spektral daya pada pita delta dan penurunan spektral daya pada pita alpha dibandingkan dengan subjek kontrol. Analisis konektivitas fungsional otak pada anak autis menunjukkan nilai koherensi intra-hemisphere dan inter-hemisphere yang lebih rendah pada pita delta dan theta, khususnya pada area frontal. QEEG dapat digunakan untuk karakterisasi sinyal otak pada penderita autis dan membedakannya dari subjek normal. Autism Spectrum disorder (ASD is a neurodevelopmental disorder associated with deficits in executive function, emotions, language, and social communication. Several neuroimaging and neurophysiology techniques are used to understand the relationship between

South Oregon Coast Reinforcement.

Energy Technology Data Exchange (ETDEWEB)

United States. Bonneville Power Administration.

1998-05-01

The Bonneville Power Administration is proposing to build a transmission line to reinforce electrical service to the southern coast of Oregon. This FYI outlines the proposal, tells how one can learn more, and how one can share ideas and opinions. The project will reinforce Oregon`s south coast area and provide the necessary transmission for Nucor Corporation to build a new steel mill in the Coos Bay/North Bend area. The proposed plant, which would use mostly recycled scrap metal, would produce rolled steel products. The plant would require a large amount of electrical power to run the furnace used in its steel-making process. In addition to the potential steel mill, electrical loads in the south Oregon coast area are expected to continue to grow.

Integrating Salmon Recovery, Clean Water Act Compliance, Restoration, and Climate Change Impacts in the South Fork Nooksack River

Science.gov (United States)

"The South Fork Nooksack River (SFNR) is an important tributary to the Nooksack River, Bellingham Bay, and the Salish Sea. The South Fork Nooksack River comprises one of the 22 independent populations of spring Chinook in the Puget Sound Chinook Evolutionarily Significant Un...

California State Waters Map Series: offshore of Half Moon Bay, California

Science.gov (United States)

Cochrane, Guy R.; Dartnell, Peter; Greene, H. Gary; Johnson, Samuel Y.; Golden, Nadine E.; Hartwell, Stephen R.; Dieter, Bryan E.; Manson, Michael W.; Sliter, Ray W.; Ross, Stephanie L.; Watt, Janet T.; Endris, Charles A.; Kvitek, Rikk G.; Phillips, Eleyne L.; Erdey, Mercedes D.; Chin, John L.; Bretz, Carrie K.

2014-01-01

In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonar data, acoustic backscatter, seafloor video, seafloor photography, high-resolution seismic-reflection profiles, and bottom-sediment sampling data. The map products display seafloor morphology and character, identify potential marine benthic habitats, and illustrate both the surficial seafloor geology and shallow (to about 100 m) subsurface geology. The Offshore of Half Moon Bay map area is located in northern California, on the Pacific coast of the San Francisco Peninsula about 40 kilometers south of the Golden Gate. The city of Half Moon Bay, which is situated on the east side of the Half Moon Bay embayment, is the nearest significant onshore cultural center in the map area, with a population of about 11,000. The Pillar Point Harbor at the north edge of Half Moon Bay offers a protected landing for boats and provides other marine infrastructure. The map area lies offshore of the Santa Cruz Mountains, part of the northwest-trending Coast Ranges that run roughly parallel to the San Andreas Fault Zone. The Santa Cruz Mountains lie between the San Andreas Fault Zone and the San Gregorio Fault system. The flat coastal area, which is the most recent of numerous marine terraces, was formed by wave erosion about 105 thousand years ago. The higher elevation of this same terrace west of the Half Moon Bay Airport is caused by uplift on the Seal Cove Fault, a splay of the San Gregorio Fault Zone. Although originally incised into the rising terrain horizontally, the ancient terrace surface has been gently folded into a northwest-plunging syncline by

Hurricane-induced Sediment Transport and Morphological Change in Jamaica Bay, New York

Science.gov (United States)

Hu, K.; Chen, Q. J.

2016-02-01

Jamaica Bay is located in Brooklyn and Queens, New York on the western end of the south shore of the Long Island land mass. It experienced a conversion of more than 60% of the vegetated salt-marsh islands to intertidal and subtidal mudflats. Hurricanes and nor'easters are among the important driving forces that reshape coastal landscape quickly and affect wetland sustainability. Wetland protection and restoration need a better understanding of hydrodynamics and sediment transport in this area, especially under extreme weather conditions. Hurricane Sandy, which made landfall along east coast on October 30, 2012, provides a critical opportunity for studying the impacts of hurricanes on sedimentation, erosion and morphological changes in Jamaica Bay and salt marsh islands. The Delft3D model suit was applied to model hydrodynamics and sediment transport in Jamaica Bay and salt marsh islands. Three domains were set up for nesting computation. The local domain covering the bay and salt marshes has a resolution of 10 m. The wave module was online coupled with the flow module. Vegetation effects were considered as a large number of rigid cylinders by a sub-module in Delft3D. Parameters in sediment transport and morphological change were carefully chosen and calibrated. Prior- and post-Sandy Surface Elevation Table (SET)/accretion data including mark horizon (short-term) and 137Cs and 210Pb (long-term) at salt marsh islands in Jamaica Bay were used for model validation. Model results indicate that waves played an important role in hurricane-induced morphological change in Jamaica Bay and wetlands. In addition, numerical experiments were carried out to investigate the impacts of hypothetic hurricanes. This study has been supported by the U.S. Geological Survey Hurricane Sandy Disaster Recovery Act Funds.

Modeling the climatic and subsurface stratigraphy controls on the hydrology of a Carolina bay wetland in South Carolina, USA

Science.gov (United States)

Ge Sun; Timothy J. Callahan; Jennifer E. Pyzoha; Carl C. Trettin

2006-01-01

Restoring depressional wetlands or geographically isolated wetlands such as cypress swamps and Carolina bays on the Atlantic Coastal Plains requires a clear understanding of the hydrologic processes and water balances. The objectives of this paper are to (1) test a distributed forest hydrology model, FLATWOODS, for a Carolina bay wetland system using seven years of...

Modeling the climatic and subsurface stratigraphy controls on the hydrology of a Carolina Bay wetland in South Carolina, USA

Science.gov (United States)

Ge Sun; Timothy J. Callahan; Jennifer E. Pyzoha; Carl C. Trettin

2006-01-01

Restoring depressional wetlands or geographically isolated wetlands such as cypress swamps and Carolina bays on the Atlantic Coastal Plains requires a clear understanding of the hydrologic processes and water balances. The objectives of this paper are to (1) test a distributed forest hydrology model, FLATWOODS, for a Carolina bay wetland system using seven years of...

Pengaruh Latihan Traditional Push Up, Plyometric Push Up, dan Incline Push Up Terhadap Kekuatan Otot Lengan, Power Otot Lengan, dan Daya Tahan Otot Lengan

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Febriyan Dwi Cahyono

2018-05-01

Full Text Available Tujuan penelitian ini adalah untuk peningkatan performa fisik otot lengan siswa ekstrakulikuler putra SMAN 2 Lamongan yang memiliki kelemahan saat dilakukan evaluasi fisik. Empat puluh siswa sehat dengan melihat status gizi melalui indeks masa tubuh (IMT dipilih sesuai dengan kriteria dan dilakukan pretest dan pemeringkatan sehingga masuk dalam pengelompokan traditional push up, plyometric push up, incline push up dan kelompok kontrol. Push up 30 detik, push up 60 detik dan medicine ball test digunakan untuk mengukur peningkatan kinerja. Ketiga kelompok berpartisipasi dalam penelitian tiga hari dalam seminggu selama enam minggu dan menyelesaikan 18 sesi pelatihan, pada frekuensi 3 sesi per minggu. Hasil uji paired sample t-test dalam kelompok traditional push up menunjukkan pengaruh yang signifikan pada variabel kekuatan dan daya tahan, kelompok plyometric push up menunjukkan pengaruh yang signifikan pada variabel kekuatan dan power, dan kelompok incline push up menunjukkan pengaruh yang signifikan pada variabel kekuatan dan daya tahan.  Disimpulkan dari penelitian ini bahwa pelatihan traditional push up, plyometric push up dan incline push up ketiganya efektif untuk peningkatan kinerja tubuh bagian atas.

BUDI DAYA KARANG HIAS MENDUKUNG PERDAGANGAN KARANG HIAS YANG BERKESINAMBUNGAN

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Ofri Johan

2007-12-01

Full Text Available Kegiatan budi daya karang hias di Indonesia perlu dilakukan untuk menjamin perdagangannya agar berjalan tanpa merusak keanekaragaman dan kondisi terumbu karang. Budi daya karang hias menggunakan rak berupa meja yang terbuat dari paralon PVC yang dinilai sangat ekonomis dan mudah diaplikasikan masyarakat lokal. Pengamatan pertumbuhan hanya dilakukan pada 1 rak masing-masing jenis karang yang dibudidayakan yaitu Acropora sp., Acropora formosa, Acropora humilis, Acropora millepora, Acropora nobilis, dan Seriatopora hystrix. Kegiatan dilakukan pada dua lokasi yaitu Pulau Simakakang-Mentawai, Sumatera Barat dan Gondol, Bali. Pengamatan dilakukan setiap dua bulan dan penelitian dilaksanakan selama 6 bulan. Hasil pengamatan diperoleh tingkat mortalitas pada lokasi Pulau Simakakang diperoleh 5,56% dari 36 sampel yang diukur dari 6 jenis karang dan 6 ulangan, pertambahan panjang jenis A. formosa 0,64 cm/bulan, lebih cepat dibandingkan dengan jenis A. millepora 0,58 cm/bulan dan jenis lain. Karang A. humilis memiliki laju perambatan pada substrat semen dan batang pengikat yang  lebih cepat dari jenis lain. Pada lokasi Gondol, Bali memiliki laju pertambahan panjang karang A. millepora lebih cepat (0,50 cm/bulan dibandingkan dengan jenis A. tenuis (0,43 cm/bulan dan jenis lain berkisar antara 0,21—0,39 cm/bulan.Tingkat kematian 3 koloni (7,1% dari total 42 koloni yang disampling. The culture of ornamental coral is important to be conducted to guarantee the coral trade can be run well without giving impact to coral reef biodiversities and coral reef condition in Indonesia. This cultured using table using nets as a place which is made from PVC pipe. This method can minimize cost comparing with others materials as well as applicable for coastal community. One table can be placed 12 (3x4 substrate with a distance among others of 25 cm, then fragmented coral were tied to that substrates. This activity was carried out in two locations that were Simakakang

ANALISIS TATA KELOLA OPTIMALISASI SUMBER DAYA SISTEM INFORMASI MANAJEMEN JEMBATAN TIMBANG (EDM04 BERDASARKAN KERANGKA KERJA COBIT 5 PADA DINAS PERHUBUNGAN KOMUNIKASI DAN INFORMATIKA PROVINSI JAWA TENGAH

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Yudistira Dian Hastiti

2016-06-01

Full Text Available Dinas Perhubungan Komunikasi dan Informatika (Dinhubkominfo Provinsi Jawa tengah sebagai perumus dan pelaksana kebijakan teknis, fasilitator, dan evaluator terkait penyelengaraan kegiatan penimbangan kendaraan bermotor melalui 16 jembatan timbang yang tersebar di wilayah provinsi jawa tengah telah mengimplementasikan sebuah system yang dipergunakan untuk kemudahan dalam menimbang kendaraan dengan mendata setiap kendaraan pada suatu system yang disebut Sistem Informasi Manajemen Jembatan Timbang (SIM JT. Masalah yang ditemukan saat ini yaitu, melihat padatnya antrian panjang kendaraan yang akan ditimbang disebabkan karena SIM JT yang belum memiliki database identitas kendaraan dan tidak dapat terpantau secara real time yang terjadi saat local server dalam keadaan down. Berdasarkan hal tersebut Dinhubkominfo berupaya mengoptimalkan kinerja SIM JT baik dari segi sumber daya manajemen manusia, TI, serta keuangan untuk meminimalkan kesalahan serta meningkatkan efektifitas pelayanan. Dari hasil studi dokumen, wawancara, dan kuesioner  berdasarkan COBIT 5 menghasilkan tingkat kapabilitas tata kelola proses optimalisasi sumer daya (EDM04 pada Dinas Perhubungan Komunikasi dan Informatika Provinsi Jawa Tengah saat ini berada di level 3 dengan status pencapaian Largely Achieved sebesar 80,18% setara dengan 3,80 dimana level 0, 1, dan 2 mencapai status Fully Achieved. Hal ini menunjukan telah mengelola dengan baik proses optimalisasi sumber daya dan diimplementasikan untuk mendukung pengerjaan proses standar dan efektif. Untuk mencapai tingkat target, Dinhubkominfo dapat melakukan strategi perbaikan dengan memperhatikan secara bertahap dari proses atribut level 1 sampai 4 Kata Kunci: Analisis Tata Kelola TI, COBIT 5, Sistem Informasi Manajemen Jembatan Timbang, Analisis Tingkat Kapabilitas, Analisis Kesenjangan.

Daya Repelan dan Uji Iritasi Formula Lotion Ekstrak Etanol Daun Sirih (Piper Betle Linn) dengan Variasi Basis Lanolin terhadap Nyamuk Aedes Aegypti

OpenAIRE

Fitriana, Apri Yudis; Wahyuningrum, Retno; Sudarso, Sudarso

2012-01-01

Demam berdarah dengue (DBD) yang ditularkan melalui gigitan nyamuk Aedes aegypti dan Aedes albopictus betina masih menjadi masalah kesehatan khususnya di Indonesia. Sediaan repelan biasa digunakan untuk menghindari gangguan atau gigitan nyamuk Aedes aegypti. Namun sediaan repelan mengandung Diethyl toluamide (DEET) yang dalam penggunaannya dapat menyebabkan eritema (kemerahan pada kulit) dan iritasi. Penelitian ini bertujuan untuk menentukan aktivitas daya repelan lotion ekstrak daun sirih de...

PENGELOLAAN SUMBER DAYA AIR MINUM DALAM KEMASAN (AMDK

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Laelatul Istiqomah

2017-01-01

Full Text Available Air adalah sumber daya alam yang vital bagi kehidupan yang merupakan kepemilikan umum. Akhir-akhir ini air menjadi lahan bisnis yang menjanjikan diantaranya adalah produk air minum dalam kemasan (AMDK yang dikelola swasta. Pengelolaan air yang dikuasai oleh swasta akan menimbulkan masalah karena swasta semata-mata berorientasi profit. Perlunya intervensi pemerintah dalam pengelolaan sumberdaya air mengingat air adalah kebutuhan hajat orang banyak. Tujuan penelitian ini adalah menganalisis pengelolaan AMDK yang dikuasai swasta, pendekatan penelitian dengan metode kualitatif dengan pendekatan studi pustaka. Hasil penelitian menunjukkan perlunya intervensi pemerintah dalam pengelolaan AMDK, dan merekomendasikan BUMDes sebagai media pengelola guna kesejahteraan umat.   Water is a natural resource that is vital to the life which is public ownership. Recently, water becomes promising business area including a produc to bottle water (AMDK are privately managed. Water management is controlled by the private sector because the private sector will lead to problems because of their solely profit-oriented. The need for government intervention in the management of water resources given of water as livelihood needs of people. The purpose of this study was to analyze the management of drinking water that is controlled by the private sector using qualitative method. The results showed the need for government intervention in the management of drinking water, and recommends BUMDes as media to manage water for the welfare of the people.

Spatial distribution of heavy metals in surficial sediments from Guanabara Bay: Rio de Janeiro, Brazil

Science.gov (United States)

Neto, José Antônio Baptista; Gingele, Franz Xaver; Leipe, Thomas; Brehme, Isa

2006-04-01

Ninety-two surface sediment samples were collected in Guanabara Bay, one of the most prominent urban bays in SE Brazil, to investigate the spatial distribution of anthropogenic pollutants. The concentrations of heavy metals, organic carbon and particle size were examined in all samples. Large spatial variations of heavy metals and particle size were observed. The highest concentrations of heavy metals were found in the muddy sediments from the north western region of the bay near the main outlets of the most polluted rivers, municipal waste drainage systems and one of the major oil refineries. Another anomalous concentration of metals was found adjacent to Rio de Janeiro Harbour. The heavy metal concentrations decrease to the northeast, due to intact rivers and the mangrove systems in this area, and to the south where the sand fraction and open-marine processes dominate. The geochemical normalization of metal data to Li or Al has also demonstrated that the anthropogenic input of heavy metals have altered the natural sediment heavy metal distribution.

Radionuclides in the ecological system of the Boka Kotorska Bay

International Nuclear Information System (INIS)

Martic, M.; Ajdacic, N.

1988-01-01

In order to determine radioactive contamination in the South Adriatic region after May, 1986, activities of 21 radionuclides of natural and artificial origin were determined by gamma-spectrometry in the samples of sea water, sediments and several characteristic types of organisms collected on several locations in the Boka Kotorska Bay and open sea. Quantitative data on radionuclide contents are presented. Change of activity levels with respect to the 'zero state' determined for this region during previous years is also discussed. (author) 6 refs.; 4 tabs

Generation of deterministic tsunami hazard maps in the Bay of Cadiz, south-west Spain

Science.gov (United States)

Álvarez-Gómez, J. A.; Otero, L.; Olabarrieta, M.; González, M.; Carreño, E.; Baptista, M. A.; Miranda, J. M.; Medina, R.; Lima, V.

2009-04-01

The bay of Cádiz is a densely populated and industrialized area, and an important centre of tourism which multiplies its population in the summer months. This bay is situated in the Gulf of Cádiz, the south-west Atlantic margin of the Iberian Peninsula. From a tectonic point of view this area can be defined as a diffuse plate boundary, comprising the eastern edge of the Gloria and Tydeman transforms (where the deformation is mainly concentrated in these shear corridors), the Gorringe Bank, the Horseshoe Abyssal plain, the Portimao and Guadalquivir banks, and the western termination of the arcuated Gibraltar Arc. This deformation zone is the eastern edge of the Azores - Gibraltar seismic zone, being the present day boundary between the Eurasian and African plates. The motion between the plates is mainly convergent in the Gulf of Cádiz, but gradually changes to almost pure transcurrent along the Gloria Fault. The relative motion between the two plates is of the order of 4-5 mm/yr. In order to define the different tsunamigenic zones and to characterize its worst tsunamigenic source we have used seismic, structural and geological data. The numerical model used to simulate the wave propagation and coastal inundation is the C3 (Cantabria, COMCOT and Tsunami-Claw) model. C3 is a hybrid finite difference-finite volume method which balances between efficiency and accuracy. For offshore domain in deep waters the model applies an explicit finite difference scheme (FD), which is computationally fast and accurate in large grids. For near coast domains in coastal areas, it applies a finite volume scheme (VOF). It solves correctly the bore formation and the bore propagation. It is very effective solving the run-up and the run down. A set of five worst case tsunamigenic sources has been used with four different sea levels (minimum tide, most probable low tide, most probable high tide and maximum tide), in order to produce the following thematic maps with the C3 model: maximum

Effects of waves on water dispersion in a semi-enclosed estuarine bay

Science.gov (United States)

Delpey, M. T.; Ardhuin, F.; Otheguy, P.

2012-04-01

The bay of Saint Jean de Luz - Ciboure is a touristic destination located in the south west of France on the Basque coast. This small bay is 1.5km wide for 1km long. It is semi-enclosed by breakwaters, so that the area is mostly protected from waves except in its eastern part, where wave breaking is regularly observed over a shallow rock shelf. In the rest of the area the currents are generally weak. The bay receives fresh water inflows from two rivers. During intense raining events, the rivers can introduce pollutants in the bay. The input of pollutants combined with the low level dynamic of the area can affect the water quality for several days. To study such a phenomenon, mechanisms of water dispersion in the bay are investigated. The present paper focuses on the effects of waves on bay dynamics. Several field experiments were conducted in the area, combining wave and current measurements from a set of ADCP and ADV, lagrangian difter experiments in the surfzone, salinity and temperature profile measurements. An analysis of this set of various data is provided. It reveals that the bay combines remarkable density stratification due to fresh water inflows and occasionally intense wave-induced currents in the surfzone. These currents have a strong influence on river plume dynamics when the sea state is energetic. Moreover, modifications of hydrodynamics in the bay passes are found to be remarkably correlated with sea state evolutions. This result suggests a significant impact of waves on the bay flushing. To further analyse these phenomena, a three dimensional numerical model of bay hydrodynamics is developed. The model aims at reproducing fresh water inflows combined with wind-, tide- and wave-induced currents and mixing. The model of the bay is implemented using the code MOHID , which has been modified to allow the three dimensional representation of wave-current interactions proposed by Ardhuin et al. [2008b] . The circulation is forced by the wave field modelled

The Tsunami Geology of the Bay of Bengal Shores and the Predecessors of the 2004 Indian Ocean Event

Science.gov (United States)

Rajendran, C.; Rajendran, K.; Seshachalam, S.; Andrade, V.

2010-12-01

The 2004 Aceh-Andaman earthquake exceeded the known Indian Ocean precedents by its 1,300-km long fault rupture and the height and reach of its tsunami. Literature of the ancient Chola dynasty (AD 9-11 centuries) of south India and the archeological excavations allude to a sea flood that crippled the historic port at Kaveripattinam, a trading hub for Southeast Asia. Here, we combine a variety of data from the rupture zone as well as the distant shores to build a tsunami history of the Bay of Bengal. A compelling set of geological proxies of possible tsunami inundation include boulder beds of Car Nicobar Island in the south and the East Island in the northernmost Andaman, a subsided fossil mangrove forest near Port Blair and a washover sedimentation identified in the Kaveripattinam coast of Tamil Nadu, south India. We have developed an extensive chronology for these geological proxies, and we analyze them in conjunction with the historical information culled from different sources for major sea surges along the Bay of Bengal shores. The age data and the depositional characteristics of these geological proxies suggest four major tsunamis in the last 2000 years in the Bay of Bengal, including the 1881 Car Nicobar tsunami. Among these, the evidence for the event of 800-1200 cal yr BP is fairly well represented on both sides of the Bay of Bengal shores. Thus, we surmise that the 800-1000-year old tsunami mimics the transoceanic reach of the 2004 Indian Ocean and the age constraints also agree with the sea surge during the Chola period. We also obtained clues for a possible medieval tsunami from the islands occurred probably a few hundred years after the Chola tsunami, but its size cannot constrained, nor its source. The convergence of ages and the multiplicity of sites would suggest at least one full size predecessor of the 2004 event 1000-800 years ago.

Concentrations of metals in blood and feathers of nestling ospreys (Pandion haliaetus) in Chesapeake and Delaware Bays

Science.gov (United States)

Rattner, B.A.; Golden, N.H.; Toschik, P.C.; McGowan, P.C.; Custer, T.W.

2008-01-01

In 2000, 2001, and 2002, blood and feather samples were collected from 40-45-day-old nestling ospreys (Pandion haliaetus) from Chesapeake Bay and Delaware Bay and River. Concentrations of 18 metals, metalloids, and other elements were determined in these samples by inductively coupled plasma-mass spectroscopy, and Hg concentrations were measured by cold vapor atomic absorption spectroscopy. When compared to concurrent reference areas (South, West, and Rhode Rivers), mean As and Hg concentrations in blood were greater (p nestlings from the highly industrialized Elizabeth River compared to the rural reference area. When compared to the concurrent reference area, mean Al, Ba, Hg, Mn, and Pb concentrations in feathers were substantially greater (p nestlings from northern Delaware Bay and River had greater concentrations (p nestling feathers from Delaware were frequently greater than in the Chesapeake. The present findings and those of related reproductive studies suggest that concentrations of several heavy metals (e.g., Cd, Hg, Pb) in nestling blood and feathers from Chesapeake and Delaware Bays were below toxicity thresholds and do not seem to be affecting chick survival during the nestling period.

A Holocene progradation record from Okains Bay, Banks Peninsula, Canterbury, New Zealand

International Nuclear Information System (INIS)

Stephenson, W.; Shulmeister, J.

1999-01-01

Fifty-eight distinct ridges are preserved on the Holocene progradation plain in Okains Bay, Banks Peninsula, Canterbury. Of these, 48 represent beach berm and foredune complexes and the remaining 10 are transverse dune ridges. Periods of rapid coastal progradation are marked by multiple beach berm preservation, whereas intervening periods of lower sediment accumulation result in a stable coastline and transverse dune formation. Infilling of the bay began following sea-level stabilisation in the mid Holocene. The fill is dominantly fine sand, which is derived from sediment carried around Banks Peninsula in the Southland Current and washed into Okains Bay by wave action. Variations in the progradation rate are therefore proxy indicators of coastal erosion in the Canterbury Bight. We demonstrate that there is little progradational fill preserved between c. 6500 and 2000 yr BP. This implies significant changes in sediment delivery to the Southland Current within the last 2000 yr, which we attribute to increased coastal erosion in South Canterbury. We speculate that this increasing erosion resulted from increased wave energy regimes, which in turn may relate to increasing Southern Hemisphere seasonality following the precessional cycle. (author). 32 refs., 4 figs., 3 tabs

Chinese imperative: nuclear energy to bridge geographic and economic gaps

International Nuclear Information System (INIS)

Zongyu, T.

1994-01-01

Encouraged by successful operation of its first three nuclear units -Quinshan-1 (own design) and Daya Bay-1 and -2 (Framatome) - China is rapidly preparing to expand both sites. The immediate need is to overcome the shortage of electricity on the East coast. Medium to long term, the need is to ensure power for economic growth throughout China. (author) 2 figs., 1 tab

AFA 2G and AFA 3G fuel rod performance analysis

International Nuclear Information System (INIS)

Lu Huaquan; Liu Tong; Jiao Yongjun; Pang Hua

2002-01-01

For 18-months fuel cycle strategy in GNPJVC DAYA BAY unit 1/2, by means of COCCINEL, the fuel rod performance for AFA 3G and AFA 2G in transition cycle is analyzed. The design criteria which should be respected in fuel rod design are included and the design methodology is introduced. All the criteria mentioned are verified and met

Evidence for the existence of Persian Gulf Water and Red Sea Water in the Bay of Bengal

Science.gov (United States)

Jain, Vineet; Shankar, D.; Vinayachandran, P. N.; Kankonkar, A.; Chatterjee, Abhisek; Amol, P.; Almeida, A. M.; Michael, G. S.; Mukherjee, A.; Chatterjee, Meenakshi; Fernandes, R.; Luis, R.; Kamble, Amol; Hegde, A. K.; Chatterjee, Siddhartha; Das, Umasankar; Neema, C. P.

2017-05-01

The high-salinity water masses that originate in the North Indian Ocean are Arabian Sea High-Salinity Water (ASHSW), Persian Gulf Water (PGW), and Red Sea Water (RSW). Among them, only ASHSW has been shown to exist in the Bay of Bengal. We use CTD data from recent cruises to show that PGW and RSW also exist in the bay. The presence of RSW is marked by a deviation of the salinity vertical profile from a fitted curve at depths ranging from 500 to 1000 m; this deviation, though small (of the order of 0.005 psu and therefore comparable to the CTD accuracy of 0.003 psu), is an order of magnitude larger than the 0.0003 psu fluctuations associated with the background turbulence or instrument noise in this depth regime, allowing us to infer the existence of RSW throughout the bay. PGW is marked by the presence of a salinity maximum at 200-450 m; in the southwestern bay, PGW can be distinguished from the salinity maximum due to ASHSW because of the intervening Arabian Sea Salinity Minimum. This salinity minimum and the maximum associated with ASHSW disappear east and north of the south-central bay (85°E, 8°N) owing to mixing between the fresher surface waters that are native to the bay (Bay of Bengal Water or BBW) with the high-salinity ASHSW. Hence, ASHSW is not seen as a distinct water mass in the northern and eastern bay and the maximum salinity over most of the bay is associated with PGW. The surface water over most of the bay is therefore a mixture of ASHSW and the low-salinity BBW. As a corollary, we can also infer that the weak oxygen peak seen within the oxygen-minimum zone in the bay at a depth of 250-400 m is associated with PGW. The hydrographic data also show that these three high-salinity water masses are advected into the bay by the Summer Monsoon Current, which is seen to be a deep current extending to 1000 m. These deep currents extend into the northern bay as well, providing a mechanism for spreading ASHSW, PGW, and RSW throughout the bay.

33 CFR 334.1320 - Kuluk Bay, Adak, Alaska; naval restricted area.

Science.gov (United States)

2010-07-01

... THE ARMY, DEPARTMENT OF DEFENSE DANGER ZONE AND RESTRICTED AREA REGULATIONS § 334.1320 Kuluk Bay, Adak...: Beginning on shore at latitude 51°55′00″ N, longitude 176°33′09″ W; thence due east to latitude 51°55′00″ N, longitude 176°33′09″ W; thence due south to latitude 51°51′55″ N longitude 176°31′09″ W; thence due west to...

226Ra behavior in the Pee Dee river-Winyah Bay estuary

International Nuclear Information System (INIS)

Elsinger, R.J.; Moore, W.S.

1980-01-01

Concentrations of dissolved 226 Ra in Winyah Bay, South Carolina, and in the adjacent Atlantic Ocean are augmented by the desorption of radium from sediments in the low-salinity area of the estuary and diffusion from bottom sediments. Desorption of 226 Ra is reflected by lower concentrations in suspended sediments from higher-salinity regions of the estuary. Bottom sediments from the high-salinity region have lower 226 Ra/ 230 Th activity ratios than those from the low-salinity end. (orig./ME)

Evolution of extreme high waters along the east coast of India and at the head of the Bay of Bengal

Digital Repository Service at National Institute of Oceanography (India)

Antony, C.; Unnikrishnan, A.S.; Woodworth, P.L.

. The highest water levels above mean sea level have the greatest magnitude towards the northern part of the Bay, which decreases towards its south-west. Extreme high waters were observed to result from a combination of moderate, or even small, surges with large...

75 FR 8297 - Tongass National Forest, Thorne Bay Ranger District, Thorne Bay, AK

Science.gov (United States)

2010-02-24

..., Thorne Bay, AK AGENCY: Forest Service, USDA. ACTION: Cancellation of Notice of intent to prepare an... Roberts, Zone Planner, Thorne Bay Ranger District, Tongass National Forest, P.O. Box 19001, Thorne Bay, AK 99919, telephone: 907-828-3250. SUPPLEMENTARY INFORMATION: The 47,007-acre Kosciusko Project Area is...

77 FR 44140 - Drawbridge Operation Regulation; Sturgeon Bay Ship Canal, Sturgeon Bay, WI

Science.gov (United States)

2012-07-27

... Maple-Oregon Bridges so vehicular traffic congestion would not develop on downtown Sturgeon Bay streets... movement of vehicular traffic in Sturgeon Bay. The Sturgeon Bay Ship Canal is approximately 8.6 miles long... significant increase in vehicular and vessel traffic during the peak tourist and navigation season between...

Physical processes in a coupled bay-estuary coastal system: Whitsand Bay and Plymouth Sound

Science.gov (United States)

Uncles, R. J.; Stephens, J. A.; Harris, C.

2015-09-01

Whitsand Bay and Plymouth Sound are located in the southwest of England. The Bay and Sound are separated by the ∼2-3 km-wide Rame Peninsula and connected by ∼10-20 m-deep English Channel waters. Results are presented from measurements of waves and currents, drogue tracking, surveys of salinity, temperature and turbidity during stratified and unstratified conditions, and bed sediment surveys. 2D and 3D hydrodynamic models are used to explore the generation of tidally- and wind-driven residual currents, flow separation and the formation of the Rame eddy, and the coupling between the Bay and the Sound. Tidal currents flow around the Rame Peninsula from the Sound to the Bay between approximately 3 h before to 2 h after low water and form a transport path between them that conveys lower salinity, higher turbidity waters from the Sound to the Bay. These waters are then transported into the Bay as part of the Bay-mouth limb of the Rame eddy and subsequently conveyed to the near-shore, east-going limb and re-circulated back towards Rame Head. The Simpson-Hunter stratification parameter indicates that much of the Sound and Bay are likely to stratify thermally during summer months. Temperature stratification in both is pronounced during summer and is largely determined by coastal, deeper-water stratification offshore. Small tidal stresses in the Bay are unable to move bed sediment of the observed sizes. However, the Bay and Sound are subjected to large waves that are capable of driving a substantial bed-load sediment transport. Measurements show relatively low levels of turbidity, but these respond rapidly to, and have a strong correlation with, wave height.