Anthropogenic C1 and C2 Halocarbons: Potential Application as Coastal Water-Mass Tracers

1980 ◽  
pp. 435-444
Author(s):  
George R. Helz
Keyword(s):  
Coastal Water ◽  
Potential Application ◽  
Water Mass

scholarly journals Effects of large scaled eddies in oceans upon behaviour of coastal water mass.

1984 ◽  
pp. 183-191
Author(s):  
Sotoaki ONISHI ◽  
Osamu SUYAMA
Keyword(s):  
Coastal Water ◽  
Water Mass

Multispecies larval fish associations: Accident or Adaptation?

1983 ◽  
Vol 40 (6) ◽  
pp. 754-762 ◽  
Author(s):  
Kenneth T. Frank ◽  
William C. Leggett
Keyword(s):  
Coastal Water ◽  
Dominant Species ◽  
Water Mass ◽  
Larval Survival ◽  
Water Masses ◽  
Potential Growth ◽  
Safe Sites ◽  
Demersal Eggs ◽  
Frequency Distributions ◽  
Larval Drift

Capelin larvae (Mallotus villosus) time their period of larval drift to coincide with water masses containing abundant food resources and a reduced predator complex by responding to environmental cues associated with coastal water mass replacement. This persistent, coast-wide phenomenon led us to hypothesize that the initiation of larval drift in species of fishes other than capelin, having similar spawning modes, should be linked to the occurrence of these "safe site" water masses. The abundance of larvae of demersal spawning species, other than capelin, in the nearshore waters of our study site in eastern Newfoundland was highly variable during June–August in 1979 and 1980 and was unrelated to seasonal trends. The abundance of this sympatric noncapelin component of the ichthyoplankton was, however, positively related to both water temperature and larval capelin density, both of which are strongly influenced by coastal water mass replacement, and to the occurrence of conditions favorable to larval survival: "safe sites." The noncapelin larval assemblage was dominated by species having demersal eggs (90% of the total catch in two years) spawned in shallow water, in particular, winter flounder (Pseudopleuronectes americanus), radiated shanny (Ulvaria subbifurcata), and seasnails (Liparis spp.). Weekly size frequency distributions of these three species were dominated by newly hatched larvae. We conclude that the onset of larval drift in these species was also synchronized to the temporally variable occurrence of ecological safe sites for larvae. Three advantages accrue: food levels and potential growth rates would be greatly enhanced, predator density would be reduced, and predation rates would be reduced due to association with the dominant species (capelin) that saturate the predator field. Similar associations between a single dominant species and other much less abundant species appear to be common features of the ichthyoplankton of temperate/boreal regions.

Ultrastructure of Some Planktonic Formainifera

1974 ◽  
Vol 32 ◽  
pp. 190-191
Author(s):  
William H. Zucker
Keyword(s):  
Cell Biology ◽  
Water Mass ◽  
Planktonic Foraminifera ◽  
Uranyl Acetate ◽  
Ethanol Dehydration ◽  
Globigerinoides Ruber ◽  
Light Microscope Level ◽  
Globigerina Bulloides ◽  
Glutaraldehyde Solution ◽  
Diamond Knife

Planktonic foraminifera are widely-distributed and abundant zooplankters. They are significant as water mass indicators and provide evidence of paleotemperatures and events which occurred during Pleistocene glaciation. In spite of their ecological and paleological significance, little is known of their cell biology. There are few cytological studies of these organisms at the light microscope level and some recent reports of their ultrastructure.Specimens of Globigerinoides ruber, Globigerina bulloides, Globigerinoides conglobatus and Globigerinita glutinata were collected in Bermuda waters and fixed in a cold cacodylate-buffered 6% glutaraldehyde solution for two hours. They were then rinsed, post-fixed in Palade's fluid, rinsed again and stained with uranyl acetate. This was followed by graded ethanol dehydration, during which they were identified and picked clean of debris. The specimens were finally embedded in Epon 812 by placing each organism in a separate BEEM capsule. After sectioning with a diamond knife, stained sections were viewed in a Philips 200 electron microscope.

Post-mortem Peyer’s patches: Their potential application in forensic medicine

2009 ◽  
Vol 00 (00) ◽  
pp. 090513010017019-7
Author(s):  
Biagio Solarino ◽  
Giancarlo Di Vella ◽  
Thea Magrone ◽  
Felicita Jirillo ◽  
Angela Tafaro ◽  
...  
Keyword(s):  
Forensic Medicine ◽  
Potential Application ◽  
Peyer's Patches ◽  
Peyer’S Patches ◽  
Post Mortem

Comparison of Caseinolytic and Fibrinolytic Assays for Plasmin (Fibrinolysin) in “Fibrinolytic Agents”

1966 ◽  
Vol 15 (01/02) ◽  
pp. 252-272
Author(s):  
K. M Moser ◽  
Mary Belle Frey
Keyword(s):  
Linear Relationship ◽  
Potential Application ◽  
Fibrinolytic Agents ◽  
Linear Portion

Summary1. Caseinolytic and fibrinolytic systems for assay of plasmin in fibrinolytic agents are described which are based upon the determinations of AE/min during the linear portion of the casein-plasmin and fibrin-plasmin reaction curves respectively. A " caseinolytic-rate " unit and “fibrinolytic-rate " unit of ÄE/min × 103 during the linear portion of the respective curves are proposed.2. Data are presented indicating that a reliably linear relationship exists between plasmin concentration and these caseinolytic - and fibrinolytic-rate units.3. Data comparing results obtained with the proposed assay techniques and previously-used casein and fibrinolytic techniques are presented.4. Formulae by which caseinolytic-rate and fibrinolytic-rate units can be roughly converted into Remmert-Cohen type plasmin units are offered.5. The theoretical and practical problems which have influenced development of assays for fibrinolytic components are discussed.6. The advantages of the plasmin “rate unit” techniques vis a vis existing assays are delineated.7. The potential application of the techniques to measurements other than the plasmin content of fibrinolytic agents is discussed.

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