Postharvest Correlation between Swordfish (Xiphius gladius) Size and Mercury Concentration in Edible Tissues

2015 ◽  
Vol 78 (2) ◽  
pp. 396-401 ◽  
Author(s):  
DENNIS P. CLADIS ◽  
RONGRONG ZHANG ◽  
XI TAN ◽  
BRUCE CRAIG ◽  
CHARLES R. SANTERRE
Keyword(s):  
Mercury Concentration ◽  
Total Mercury ◽  
Rapid Determination ◽  
The United States ◽  
Variable Model ◽  
The Pacific ◽  
Commercial Markets ◽  
Edible Tissues ◽  
The Pacific Ocean

Total mercury was measured via thermal decomposition amalgamation atomic absorption spectroscopy in the muscle tissue of 82 swordfish originating in the Pacific Ocean and was found to range from 228 to 2,090 ppb. The relationships between total mercury concentration and the size of the fish (i.e., length and weight) were analyzed. It was found that dressed weight (DW) was a better predictor of mercury concentration than cleithrum-to-caudal keel length in a single variable model, and DW was the only significant predictor of mercury concentration in a multivariable model. Based on these relationships, swordfish with a DW greater than 96.4 kg (213 lb; 95% confidence interval, 88 to 107 kg [195 to 235 lb]) will exceed 1,000 ppb of mercury—the action level in the United States, Canada, and Europe—and should not be sold in commercial markets. Additionally, a logistic regression model was created to illustrate the probability of a swordfish at any DW being unsafe to consume (i.e., containing more than 1,000 ppb of mercury). In this model, the probability of a swordfish being unsafe exceeds the probability of being safe at 94.6 kg (209 lb). Taken together, the models presented in this report give regulators valuable postharvest tools to use for rapid determination of the safety of swordfish intended for sale in commercial markets.

Petrels collected by Titian Ramsay Peale in the Pacific Ocean during the United States Exploring Expedition of 1838–1842

2008 ◽  
Vol 35 (1) ◽  
pp. 143-149 ◽  
Author(s):  
W. R. P. BOURNE
Keyword(s):  
United States ◽  
Pacific Ocean ◽  
The United States ◽  
Important Type ◽  
The Pacific ◽  
The Pacific Ocean

The report by Titian Ramsay Peale on birds encountered during the Wilkes Expedition was withdrawn for inaccuracy when few copies had been distributed, and re-written by John Cassin. A survey of the accounts of the petrels shows that this was not an improvement. Two important type localities for Procellaria brevipes and Thalassidroma lineata are probably wrong, and could be exchanged.

Mexico-United States Convention for the Establishment of an International Commission for the Scientific Investigation of Tuna

1951 ◽  
Vol 45 (S2) ◽  
pp. 51-57
Keyword(s):  
United States ◽  
Pacific Ocean ◽  
United States Of America ◽  
The United States ◽  
Scientific Investigation ◽  
International Commission ◽  
The Pacific ◽  
The Pacific Ocean

The United States of America and the United Mexican States consideringtheir respective interests in maintaining the populations of certain tuna and tuna-like fishes in the waters of the Pacific Ocean off the coasts of both countries.

Determination of total mercury concentration in aqueous samples with gold nanoparticles

2014 ◽  
Vol 6 (4) ◽  
pp. 1254 ◽  
Author(s):  
J. S. Crosby ◽  
J. Z. James ◽  
D. Lucas ◽  
C. P. Koshland
Keyword(s):  
Gold Nanoparticles ◽  
Mercury Concentration ◽  
Total Mercury ◽  
Aqueous Samples ◽  
Total Mercury Concentration

A LATE CRETACEOUS PLANT ASSEMBLAGE FROM EAST-CENTRAL BRITISH COLUMBIA: I, FOSSIL LEAVES

1967 ◽  
Vol 4 (6) ◽  
pp. 1185-1197 ◽  
Author(s):  
G. E. Rouse
Keyword(s):  
Pollen Grains ◽  
Rocky Mountain ◽  
The United States ◽  
Spores And Pollen ◽  
East Central ◽  
Mountain Ranges ◽  
Plant Assemblage ◽  
The Pacific ◽  
Fossil Leaves ◽  
The Pacific Ocean

Leaf compressions, spores, and pollen grains referrable to about 45 species were collected from a series of fine silts and coal stringers in the Parsnip River valley of the Rocky Mountain Trench. The leaf assemblage described in this paper indicates a late Maestrichtian to Danian age, somewhat younger than generally comparable assemblages previously reported from the lower part of the Edmonton Formation of Alberta, and from the Hell Creek, Lance, and Fox Hills Formations in the western interior of the United States. It also contains several species reported from the Nanaimo Group on eastern Vancouver Island. Plant microfossils (to be described in a later paper) include species of Glyptostrobus, Sciadopitys, Aquilapollenites, Pistillipollenites, Alnus, Myrica, Tilia, Pterocarya, and Carya, together with tricolpate pollen of uncertain affiliation. The combined leaf and microfossil assemblages indicate a warm mesothermal and humid paleoecological setting of low relief, suggesting absence of major mountain ranges westward to the Pacific Ocean.

The Pacific Ocean as Highway to Gold Mountain

2017 ◽  
Author(s):  
Elizabeth Sinn
Keyword(s):  
United States ◽  
New Zealand ◽  
Pacific Ocean ◽  
Capital Flows ◽  
The United States ◽  
The West ◽  
New Era ◽  
The Pacific ◽  
History Of ◽  
The Pacific Ocean

This chapter takes a broad look at the Pacific Ocean in relation to Chinese migration. As trade, consumption and capital flows followed migrants, powerful networks were woven and sustained; in time, the networks fanned across the Pacific from British Columbia along the West Coast of the United States to New Zealand and Australia. The overlapping personal, family, financial and commercial interests of Chinese in California and those in Hong Kong, which provide the focus of this study, energized the connections and kept the Pacific busy and dynamic while shaping the development of regions far beyond its shores. The ocean turned into a highway for Chinese seeking Gold Mountain, marking a new era in the history of South China, California, and the Pacific Ocean itself.

Prior Determination of Flash Floods: Artificial Intelligence Based Predictive Analysis Using Modified Cuckoo Search

2020 ◽  
Vol 17 (2) ◽  
pp. 990-995
Author(s):  
Talha Ahmed Khan ◽  
Muhammad Alam ◽  
Kushsairy Kadir ◽  
Zeeshan Shahid ◽  
M. S. Mazliham
Keyword(s):  
Artificial Intelligence ◽  
Water Pressure ◽  
Cuckoo Search ◽  
Flash Floods ◽  
Rapid Identification ◽  
Predictive Analysis ◽  
Direct Observations ◽  
The Pacific ◽  
The Pacific Ocean

Flash floods are considered as the most intense hazard therefore rapid identification is needed. Tsunami also causes flash floods as it is commonly generated around the Pacific Ocean. Flash floods are also caused by the severely blocked streams in heavy rainfall. Floods have ended up so many lives more than the other natural hazards and also devastated precious belongings and infrastructures. Cattles have also been affected by the floods event. Floods devastate the construction and infrastructure like roads, bridges and buildings that comes in the vicinity of effected area by flood. Breakdown and overflow of dams may produce the deadly flash floods to the populated area and environs. Many strategies and methods have been followed to determine the flash floods on early basis so that evacuation announcements may be propagated. Numerous researches have been studied and carried out to accomplish this task. Development of dams and reservoirs have been given more significance. Artificial Intelligence based competent decision-making algorithms like Bayesian classifier, PSO, ANN, NNARX, SVM and GA have been applied to achieve more accuracy in predictive analysis. Direct observations from the sensors and data from the meteorological department have also been used for the predictive analysis of flash floods. Many yardstick parameters have been proposed in past researches to identify the flash floods vigorously like environmental CO2 levels, precipitation velocity, wind speed, upstream level, height of the water, pressure, temperature and cloud to ground flashes. In this research papers a novel Artificial Intelligence based approach Modified Cuckoo Search (MCS) has been adopted to forecast the flash floods more rapidly and accurately. Obtained results in the MATLAB have proved that Modified cuckoo search with the combination of Artificial Neural Network worked better than the recent available methods. Results have also been validated by comparing the MLP-PSO.

Statistical Seismology and Communication of the USGS Operational Aftershock Forecasts for the 30 November 2018 Mw 7.1 Anchorage, Alaska, Earthquake

2019 ◽  
Vol 91 (1) ◽  
pp. 153-173 ◽  
Author(s):  
Andrew J. Michael ◽  
Sara K. McBride ◽  
Jeanne L. Hardebeck ◽  
Michael Barall ◽  
Eric Martinez ◽  
...  
Keyword(s):  
Rapid Determination ◽  
Forecast Model ◽  
The United States ◽  
Statistical Seismology ◽  
Interactive Software ◽  
Special Report ◽  
The Media ◽  
Media Reports ◽  
Alaska Earthquake

Abstract The U.S. Geological Survey (USGS) has developed a national capability for aftershock forecasting after significant earthquakes. Use of this capability began in August 2018, and the 30 November 2018 Mw 7.1 Anchorage, Alaska, earthquake provided the first opportunity to apply this capability to a damaging earthquake in an urban area of the United States of America and observe how the forecast was discussed in the media. During this sequence, the forecasts were issued by a seismologist using interactive software that implements the Reasenberg and Jones (1989) model as updated in Page et al. (2016). The forecasts are communicated with a tiered template that provides basic information first before providing a more detailed numerical forecast and are posted on the mainshock’s event page on the USGS earthquake program. Experience from the Anchorage sequence showed that the process worked well, and the first forecast was issued only 54 min after the mainshock occurred. Updates over the coming days, weeks, and months adapted the forecast model from the initial generic parameters for the seismotectonic region to Bayesian and sequence‐specific models. Media reports accurately reported the forecast, demonstrating that the forecast template was successful except for a few reports that incorrectly merged the probability of one or more events in a given time–magnitude window with the likely range of the number of events. Changes to the template have been made to prevent that confusion in the future. We also released a special report on the possible duration of the sequence to assist in the federal disaster declaration and assistance process. Both our standard forecasts and this special report would benefit from more rapid determination of a sequence‐specific decay rate.

IX. Contributions to terrestrial magnetism.—No. IV

1843 ◽  
Vol 133 ◽  
pp. 113-143 ◽  
Keyword(s):  
Pacific Ocean ◽  
West Coast ◽  
China Seas ◽  
North West ◽  
The North ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Times ◽  
The China Seas

In the present number of these Contributions, I resume the consideration of Captain Sir Edward Belcher’s magnetic observations, of which the first portion, viz. that of the stations on the north-west coast of America and adjacent islands, was discussed in No. II. The return to England of Her Majesty’s ship Sulphur by the route of the Pacific Ocean, and her detention for some months in the China Seas, have enabled Sir Edward Belcher to add magnetic determinations at thirty-two stations to those at the twenty-nine stations previously recorded. In the notice of the earlier observations, a provisional coefficient was employed in the formula for the temperature corrections of the results with the intensity needles, as no experiments had then been made for the determination of their individual co­efficients. As soon therefore as Sir Edward Belcher had completed the observation of the times of vibration of those needles at Woolwich, as the concluding station of the series made with them, Lieut. Riddell, R. A. undertook the determination of their several coefficients, which was performed in the manner and with the results described in the subjoined memorandum.

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