| Dynamic Camouflage in Benthic and Pelagic Cephalopods: An Interdisciplinary Approach to Crypsis Based on Color, Reflection, and Bioluminescence |
30 Sep 2011 |
16 pages |
| Authors:
Sonke Johnsen; Alison Sweeney; Daniel Morse; Dariusz Stramski; Jules Jaffe; DUKE UNIV DURHAM NC DEPT OF BIOLOGY
|
 | Our overall goal is to understand the perceptual and mechanistic principles that underlay camouflage framed in the context of the animals environment. In particular, we hope to characterize and understand the perceptual abilities of several species of benthic and pelagic cephalopods, the aspects of their optical environment that affect their camouflage behavior, the characterization of that behavior, and the molecular mechanisms inside the skin by which those responses are accomplished. ... |
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| Macroscale and Microscale Structural Characterization of Cephalopod Chromatophores |
APR 2011 |
14 pages |
| Authors:
Keith M. Kirkwood; Eric D. Wetzel; George Bell; Alan M. Kuzirian; Roger T. Hanlon; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| Cephalopods, the class of mollusks that include squid, cuttlefish, and octopus, possess skin with dynamic adaptable appearance. Their unique ability to rapidly change their visual appearance is enabled in part by a layer of skin containing thousands of chromatophore organs. These organs consist of a pigment sac connected to 15-25 radially arranged muscles. Muscle contraction and relaxation controls the expansion state of the sac, which alters the size of its ... |
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| Bio-Inspired Dynamically Tunable Polymer-Based Filters for Multi-Spectral Infrared Imaging |
01 May 2010 |
12 pages |
| Authors:
Daniel E Morse; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| The objective of this collaborative research undertaken by UCSB and Raytheon Vision Systems, Inc. was to translate the unique, enabling principles recently learned from UCSB's analyses of the molecular mechanisms driving dynamically tunable reflectance in cephalopod skin to the development of a high-gain, dynamically tunable, polymer-based IR filter. Based on a revolutionary but simple new bio-inspired design, our prototype devices are lightweight and silent; they require low power and are ... |
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| Dynamic Camouflage in Benthic and Pelagic Cephalopods: An Interdisciplinary Approach to Crypsis Based on Color, Reflection, and Bioluminescence |
2010 |
14 pages |
| Authors:
Sonke Johnsen; Alison Sweeney; Daniel Morse; Dariusz Stramski; Jules Jaffe; DUKE UNIV DURHAM NC DEPT OF BIOLOGY
|
| Our overall goal is to understand the perceptual and mechanistic principles that underlay camouflage framed in the context of the animals' environment. In particular, we plan to characterize and understand the perceptual abilities of several species of benthic and pelagic cephalopods, the aspects of their optical environment that affect their camouflage behavior, the characterization of that behavior, and the molecular mechanisms inside the skin by which those responses are accomplished. ... |
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| EGFR Activation by Spatially Restricted Ligands |
JUN 2005 |
20 pages |
| Authors:
Jennifer S. Goodrich; PRINCETON UNIV NJ
|
| Misregulation of Transforming Growth Factor alpha (TGFalpha) and increased Epidermal Growth Factor Receptor (EGFR) activity has been associated with an increased prognosis of breast cancer. During oogenesis in Drosophila melanogaster, local EGFR activation by the spatially restricted TGF alpha-like ligand, Gurken (Grk), is required for axis formation in the egg and future embryo. Squid, a heterogeneous nuclear ribonucleoprotein (hnRNP) functions in the localization and translational regulation of grk mRNA. The ... |
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| Molecular Phylogenetics of the Metazoan Clade Lophotrochozoa |
SEP 2003 |
|
| Authors:
Yale J. Passamaneck; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
 | DNA sequencing and phylogenetic analyses were conducted to investigate evolutionary relationships between taxa within the metazoan clade Lophotrochozoa. Chapter 1 presents an introduction to phylogenetics of the Metazoa and the clade Lophotrochozoa. Chapter 2 analyzes relationships between the major groups within the phylum Mollusca using sequences of the nuclear ribosomal large-subunit RNA gene (LSU rDNA). Results presented provide the first molecular evidence for a close relationship between the Scaphopoda and ... |
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| Experiments on Coupled Josephson Junction Devices |
15 JUL 2003 |
30 pages |
| Authors:
A. A. Abdumalikov; A. V. Ustinov; ERLANGEN-NUERNBERG UNIV (GERMANY F R)
|
| This report results from a contract tasking University of Erlangen- Nuremberg as follows: The contractor will investigate coupled Josephson devices of two different kinds. First, the contractor will test a new concept of active antennas to couple radiation out from Josephson arrays. Using a mixed series- parallel array-biasing scheme, the contractor will design and perform waveguide- coupled emission experiments with single- and double-row arrays at 80-120 GHz. If successful, this ... |
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| Bioluminescence and Symbiosis |
MAY 97 |
5 pages |
| Authors:
Edward G. Ruby; CALIFORNIA UNIV LOS ANGELES OFFICE OF CONTRACTS AND GRANTS ADMINISTRATION
|
| The objectives of this research are: (1) examine symbiotic competitive dominance in genetically distinct Vibrio Fischeri; (2) identify nonculturable but viable and symbiotically active V. Fischeri cells in seawater; (3) develop molecular genetic tools and approaches in symbiotic strains of V. Fischeri; (4) identify the 'microecological' characteristics of the environment of the symbiotic squid light organ crypts using defined mutant strains V. Fischeri; and, (5) determine the identity of symbiotic ... |
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| Biophysical and Biochemical Mechanisms in Synaptic Transmitter Release |
30 NOV 94 |
5 pages |
| Authors:
Rodolfo R. Llinas; NEW YORK UNIV MEDICAL CENTER NY DEPT OF PHYSIOLOGY AND BIOPHYSICS
|
| The project on synaptic transmission in the squid giant synapse was supported from years 1989 to 1994, and was discontinued due to a drastic reduction of funding to this branch of the Air Force Biological Research Program. Over the period of its tenure many fundamental discoveries were reported from the work supported by this grant. Among them (1) The discovery of P type calcium channels as the main trigger for ... |
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| Specific Hydrolysis of Individual Soman Stereoisomers by Bacterial and Squid-Type OPA Anhydrases (OPAs) |
MAR 94 |
|
| Authors:
John E. Walker; Benedict J. Gallo; Clarence Broomfield; Francis C. Hoskin; ARMY NATICK RESEARCH DEVELOPMENT AND ENGINEERING CENTER MA
|
| The potent cholinesterase inhibitor soman (1,2,2-trimethylpropyl methylphosphonofluoridate) exists in solution as an equilibrium mixture of four stereoisomers. Two of the isomers designated C(+)P(-)-soman and C(-) (P-)-soman are >2000 more toxic than the other forms, C(+)P(+)-soman and C(-)P(+). In this study we report on the selective hydrolysis of the individual soman isomers by purified OPAs from E. coli, B. stearothermophilus (JD100), A. alteromonas (JD6. 5) and squid. The hydrolysis was monitored ... |
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| A Practical HTS SQUID Magnetometer System for NDI of Aircraft |
10 JAN 94 |
131 pages |
| Authors:
A. D. Hibbs; F. C. Wellstood; J. X. Liu; J. E. MacArthur; QUANTUM MAGNETICS INC SAN DIEGO CA
|
| This report describes a study to assess the feasibility of using a high-Tc SQUID based magnetometry system to detect subsurface defects in aircraft. Four major tasks were performed: (1) identification of the defects of most interest to the aircraft NDI community; (2) mathematical modelling of the magnetic field due to a defect when exposed to eddy currents; (3) experimental demonstration of the technique on scale models using a laboratory system; ... |
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| The Role of Axon-Schwann Cell Interactions in Nervous System Ionic Homeostasis |
08 JUN 93 |
5 pages |
| Authors:
Edward M. Lieberman; EAST CAROLINA UNIV SCHOOL OF MEDICINE GREENVILLE NC
|
| The long term goal of the research program of this laboratory is to reach an understanding of the physiological interactions between neurons and their associated glia that relate to their ability to cooperatively regulate the ionic and neurohumoral milieu of the perineural and/or periaxonal space. To this end we have been investigating the mechanisms by which axons and neurons generate the chemical signals during their excitation that signals the glia ... |
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| Nonlinear Resonance: Noise-Assisted Information Processing in Physical and Neurophysiological Systems |
APR 93 |
8 pages |
| Authors:
Adi Bulsara; John K. Douglass; Frank Moss; NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA
|
| The distinctive hiss of radio 'noise' is familiar to all of us old enough to have listened to vintage a.m. radio shows and certainly to all those personnel who ever tried to 'pull in' a weak signal during a tour in military communications. Indeed, virtually since the birth of the telephone and radio and extending to today's sophisticated telecommunications designs, engineers have devoted prodigious efforts to eliminating or minimizing the ... |
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| Surface Analysis of Ln(2-x)Ce(x)CuO4 (Ln = Pr and Nd) Single Crystals Grown by the Top Seeded Solution Method |
MAY 92 |
19 pages |
| Authors:
Louise C. Sengupta; Somnath Sengupta; Wendy E. Kosik; J. D. Demaree; ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB
|
| Large single crystals of Ln2-xCexCU04 (Ln = Pr and Nd), the average size is approximately 5 mm x 5 mm x 1 mm, were grown by the Top Seeded Solution Growth (TSSG) technique. The optical constants of the crystals were determined by Variable Angle Spectroscopic Ellipsometry (VASE) and the results seem to indicate that a 1.5 eV absorption peak appears in the undoped material and is weakened and shifted downward ... |
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| Biophysical And Biochemical Mechanisms In Synaptic Transmitter Release |
02 APR 92 |
4 pages |
| Authors:
Rodolfo R. Llinas; NEW YORK MEDICAL COLL NY DEPT OF PHYSIOLOGY
|
| Three areas of research were implemented experimentally in the summer of 1992. (1) further description of calcium microdomains and their role in synaptic transmission; (2) a morphological analysis of rat synaptic vesicles injected into presynaptic terminal of the squid; and (3) the effect of Brefilden A (BFA) on the distribution and size of synaptic vesicles. |
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| Biophysical and Biochemical Mechanisms in Synaptic Transmitter Release |
31 JAN 92 |
71 pages |
| Authors:
Rodolfo R. Llinas; NEW YORK UNIV MEDICAL CENTER NY DEPT OF PHYSIOLOGY AND BIOPHYSICS
|
| The initial question addressed in 1989 was that of synaptic vesicle movement as determined by direct microscopic visualization. This research demonstrated that vesicles were actually mobilized from the point of injection in the axon to the active zones, i.e. the place where synaptic transmitter is released. It was also found that a change in either oxygenation or the surface properties of vesicles can lead to no movement or, to change ... |
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| Vortex Response, Dimensionality and Fluctuations in High-Tc Oxide Superconductors |
30 SEP 91 |
18 pages |
| Authors:
John M. Graybeal; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF PHYSICS
|
| This final report encompasses the following research results: In-situ reactive sputter deposition of nanometer-smooth superconducting BSCCO thin films; New method of ozone detection for use with reactive thin-film growth; Fabrication of and detailed noise properties of thin-film dc BSCCO SQUIDs; Power-law scaling of the longitudinal and transverse Hall resistivities due to vortex motion in YBCO, with implications for the nature of the vortex state; Measurement of the ac screening response ... |
|
| Development of an Electromagnetic Microscope for Eddy Current Evaluation of Materials |
AUG 91 |
24 pages |
| Authors:
Walter N. Podney; SQM TECHNOLOGY INC LA JOLLA CA
|
| Superconductive quantum interference devices (SQUIDs) offer new technology for locating material flaws electromagnetically that promises to increase sensitivity and depth of field as well as to enhance resolution and imaging. The ultrahigh sensitivity of SQUIDs to magnetic flux allows use of microscopic pickup loops in a gradiometer configuration to give high resolution. To realize the advantages of SQUID technology for Air Force requirements in evaluating the integrity of airframes, SQM ... |
|
| Phased Array Components for the High Temperature Superconducting Space Experiment (HTSSE) |
07 JUN 91 |
26 pages |
| Authors:
TRW SPACE AND TECHNOLOGY GROUP REDONDO BEACH CA
|
| A new class of X-band phase shifters using the distributed Josephson inductance (DJI) effect were delivered to NRL for the HTS Space Experiment project. Phase shifts were observed above 77 K, and large phase shifts were observed at 65 K and below. This narrow-band device was developed as a first step to a broadband device. A total of 40 HTS SQUIDs were successfully integrated into a monolithic circuit. Measurement of ... |
|
| Enzymatic Detoxication of Organophosphorus Cholinesterase Inhibitors |
15 JAN 90 |
|
| Authors:
Francis C. Hoskin; ILLINOIS INST OF TECH CHICAGO DEPT OF BIOLOGY
|
| There are two narrowly delineated OPA anhydrases (formerly DFPases) and a third broad category. Squid type OPA anhydrase is found exclusively in cephalopods, and even there to any significant level in nerve, hepatopancreas, and saliva. In brief, this enzyme hydrolyzes DFP 4 or 5 times faster than Soman, is indifferent to Mn2+ in the millimolar range, requires Ca2+ for its activity, is purifiable by 60% ammonium molecular weight of about ... |
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| Biochemical Characterization and Protein Crystallography of OPA anhydrase |
12 OCT 89 |
|
| Authors:
Keith B. Ward; Jeffrey R. Deschamps; William M. Zuk; NAVAL RESEARCH LAB WASHINGTON DC
|
| Squid, Loligo pealii, hepatopancreas organophosphorous acid anhydrase (OPAase) hydrolyzes and detoxifies nerve agents, such as diisopropylfluorophosphate (DPF) and Soman. Refinements in the purification of OPAase produce an enzyme with a specific activity greater that 300 U/mg, and yield of about 1 mg purified enzyme from a typical purification. Based on results obtained from atomic absorption spectroscopy, only zinc is present in the native active enzyme. Only zinc can completely reactivate ... |
|
| Superconductive Microprobes for Eddy Current Evaluation of Materials |
JUL 89 |
46 pages |
| Authors:
Walter N. Podney; PHYSICAL DYNAMICS INC LA JOLLA CA
|
| Superconductive quantum interference devices (SQUIDS) offer new technology for locating materials flaws electromagnetically that promises to increase sensitivity, depth of magnetic flux enables use of microscopic pickup loops in a gradiometer configuration to give high resolution. A cryogenic umbilical connects pickup loops to a remote cryostat housing SQUID sensors to ease scanning. A pair of drive coils a few millimeters in radius that encircle pickup loops forming a coplanar gradiometer ... |
|
| Fundamental Quantum 1/F Noise in Ultrasmall Semiconductor Devices and Their Optimal Design Principles |
26 JUN 89 |
92 pages |
| Authors:
Peter H. Handel; MISSOURI UNIV-ST LOUIS DEPT OF PHYSICS
|
| To learn control 1/f noise in electronic devices, the author's Quantum 1/f Noise theory was further developed and applied to pn junctions, junction and MIS infrared detectors, bipolar transistors, FET, BJT, vacuum tubes, secondary emission tubes, SQUIDs, and other devices. The present report gives a review of the progress made in the theory of the Quantum 1/f Effect, including the general derivation of the effect in second quantization, the derivation ... |
|
| CIM (Computer Integrated Manufacturing) and Integration of Work. |
MAY 1989 |
|
| Authors:
E. Havn
|
| The article is based on Esprit project 1217: Development of a Human-Centered CIM system. The paper discusses the idea of human centeredness in connection to development and use of computer systems. The idea is discussed on the individual user level, and on the organization level, the level of the collective user. Second the paper discusses system development methods. On the level of the individual user - the MMI level-methods for ... |
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| Demonstration of SQUID Parametric Amplifier |
25 OCT 88 |
|
| Authors:
TRW SPACE AND TECHNOLOGY GROUP REDONDO BEACH CA APPLIED TECHNOLOGY DIV
|
| Superconductive electronics incorporating Josephson junctions and SQUIDs (Superconducting Quantum Interference Devices) offers electronic systems of unrivaled sensitivity, speed, and efficiency which are important for the Navy and other DoD agencies. Under this contract, TRW has developed microwave parametric amplifiers based upon Josephson junction SQUIDs operating at X-band and K-band with noise levels approaching the quantum limit. This development makes possible microwave and millimeter-wave heterodyne receivers with noise temperatures below 10 ... |
|
| Ionic Basis of Potential Regulation |
88 |
|
| Authors:
Donald C. Chang; BAYLOR COLL OF MEDICINE HOUSTON TX DEPT OF PHYSIOLOGY AND MOLECULAR BIOPHYSIC S
|
| The objectives of this contracted research is to understand the mechanisms by which the resting potential of the nerve cell is controlled. The following is a summary of the major findings of this contracted research: A new understanding of the physiochemical basis of potential regulation at the resting state. A new type of K channel that controls the resting potential of the nerve axon. Ion-selectivity of the delayed rectifier K ... |
|
| Thermophilic and Halophilic Enzymes |
FEB 87 |
|
| Authors:
Kenneth Mioduski; William E. White; CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
| Some species of microorganisms survive under heat and saline conditions that would denature the proteins of less tolerant counterparts. In this report, we analyze numerous small changes in a class of proteins from thermophilic and halophilic bacteria to elucidate the biochemical traits that confer stability. Major advances in chemical-biological detection and contamination control depend on the proper functioning of proteins such as antibodies, enzymes, and receptor sites. If protein-based detectors ... |
|
| Invertebrate Cell Cultures |
FEB 87 |
|
| Authors:
Kenneth Mioduski; William E. White; CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
| Marine invertebrates such as squid and clams possess enzymes that degrade diisopropyl fluorophosphate (DFP) as well as G-type nerve agents. These enzymes have potential for use as decontaminants; however, the low concentration of enzymes coupled with limited availability has hampered exploitation. If it were possible to culture in vitro the cells that produce the desired enzyme, more enzymes could be produced and research would not be hindered by seasonal variations ... |
|
| Role of Protein Phosphorylation in Regulation of Bioreactivity |
13 MAR 86 |
|
| Authors:
P. Greengard; ROCKEFELLER UNIV NEW YORK
|
| Four neuron-specific phosphoproteins ad calcium/calmodulin-dependent protein kinase II were used as model proteins to investigate the role of protein phosphorylationin the regulation of bioreactivity in the nerfous system. These studies were carried out at the levels of electrophysiology, biochemistry, and molecular biology, in an attempt to obtain the dependent proetin kinase II were pressure-injecdted into the preterminal digit of the squid giant synapse to test directly the possible reguilatiom of ... |
|
| Physical Chemical State of Water in Living Cells |
MAY 85 |
|
| Authors:
C. F. Hazlewood; D. C. Chang; R. L. Vick; BAYLOR COLL OF MEDICINE HOUSTON TX DEPT OF PHYSIOLOGY
|
| Overall Research Program (Specific work tasks) outlined in the proposal include: Physical properties of water in tissues, cells and subcellular organelles; Physical properties of water in the brine shrimp Artemia; Effects of hemorrhagic shock on the physical properties of tissue water. Relaxation times and diffusion coefficients for water protons, hydrogen and isotopes of water were determined. The progress 1983-84 pertains to: Mechanisms of NMR Relaxation: Hypothesis of Proteins Dynamics and ... |
|
| Characterization of a DFP-Hydrolyzing Enzyme in Squid Posterior Salivary Gland by Use of Soman, DFP and Manganous Ion |
1983 |
|
| Authors:
Francis C. G. Hoskin; Robert D. Prusch; ILLINOIS INST OF TECH CHICAGO DEPT OF BIOLOGY
|
|
| The Diet of Sperm Whales in the North Pacific Ocean (Pishchevye Svyazi Kashalotov v Severnoi Chasti Tikhogo Okeano), |
1974 |
12 pages |
| Authors:
M. N. Tarasevich; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| Sixteen species of squid, two species of octopus, and five species of fish were found in the stomach contents of sperm whales caught in the Gulf of Alaska, Aleutian waters, and the Bering Sea. The greatest diversity of food composition was recorded in the Gulf of Alaska, especially in the eastern regions where the influence of the Alaska Current is significantly stronger. Feeding habits of male and female whales differ. ... |
|
| Mediterranean Biological Studies. Volume I. |
JUL 1972 |
351 pages |
| Authors:
Richard H. Goodyear; Robert H. Gibbs Jr.; Clyde F. E. Roper; Robert C. Kleckner; Michael J. Sweeney; SMITHSONIAN INSTITUTION WASHINGTON D C
|
| From late August to early October, 1970, biological sampling was conducted at five stations in the Mediterranean Sea to provide material for studies of the composition and vertical distribution of the midwater fauna. The five widely spaced stations provided discrete-depth samples from very different hydrographic regimes from one end of the Mediterranean to the other. Part 1 of the report explains the methods and materials used in collecting and processing ... |
|
| The Molluscan Fauna of Thailand, Cambodia and Laos. |
JAN 1971 |
|
| Authors:
Rolf A. M. Brandt; MAHIDOL UNIV BANGKOK (THAILAND) FACULTY OF TROPICAL MEDICINE
|
| Reports of human schistosomiasis from various localities in the Mekong valley initiated a systematic survey of molluscan fauna at and around these foci in Thailand, Laos and Cambodia which was sponsored by two grants between 1963 and 1969. This report is a complete malacological faunistic report of findings in the Mekong survey. The specimens for reference collections are partly stored at Mahidol University in Bangkok, Thailand and partly in the ... |
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| DISTRIBUTION OF SPERM WHALES IN THE NORTHERN KURILE ISLANDS FROM 1959 TO 1961 (Raspredelenie Kashalotov v Severnoi Chasti Kurilskikh Vod v 1959-1961), |
1970 |
|
| Authors:
M. N. Tarasevich; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| Sperm whales congregate in two areas of the Northern Kurile Islands: the Paramushir and the Onekotan-Shiashkatan areas. Commercially, the most valuable whales are obtained during April through August in the Paramushir area and during September through October in the Onekotan-Shiashkotan area. The number of pods has decreased recently, as has the areal distribution of sperm whales. This is evident by the decrease of habitat areas, the decrease of concentration periods, ... |
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| DISTRIBUTION OF FEEDING GROUNDS AND CETACEANS IN THE SEA OF OKHOTSK (Raspredelenie Kormovykh Polei i Kitoobraznykh v Okhotskom More), |
1970 |
|
| Authors:
M. M. Sleptsov; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| A relatively constant mixing of the cold Okhotsk and warm Pacific water types takes place in the Kurile area off the western coast of Kamchatka, in northwest, central and south parts of the sea, as well as off the east coast of Sakhlain. The development of phyto- and zooplankton and the concentration of cephalopods and fishes that live in schools are associated with these 'frontal' zones which constitute the major ... |
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| APPLICATION OF INFRARED AND ULTRAVIOLET RAYS FOR DRYING SQUID, |
14 JUL 1969 |
|
| Authors:
P. M. Khovrenko; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| The author experimented with the use of infrared and ultraviolet rays in the processing of frozen squid into salted and unsalted dried squid. (Author) |
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| MECHANISMS SUBSERVING COLOR CODING IN THE VERTEBRATE RETINA. |
MAR 1968 |
|
| Authors:
Tsuneo Tomita; KEIO UNIV TOKYO (JAPAN) SCHOOL OF MEDICINE
|
| The responses used as indices of studying color reception are potential changes with latencies of several msec recorded from within single photoreceptors using micropipette electrodes having tip diameters less than 0.1 micron. Single carp cones are used for the study, but single octopus photoreceptors are also used to provide matrials for discussion of the significance of the receptor potential upon the flow of information within the receptor. The intracellular placement ... |
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| BIOCHEMICAL PROFILE OF NERVE MEMBRANE. |
FEB 1967 |
|
| Authors:
Mitzy Canessa-Fischer; Fernando Vargas; Italo Zamudio; Fernando Zambrano; Marla Cellino; CHILE UNIV SANTIAGO
|
| Giant axons of the Chilean squid were used to study: (a) enzyme systems of isolated membrane fragments as the cation-activated ATPase system and electron transfer reactions; (b) the ability to transport sodium against an electrochemical gradient in perfused giants axons; (c) filtration coefficient of axon membrane as measured by hydrostatic and osmotic methods. Results gave information of the biochemical processes of nerve membranes, which can be studied in vivo, using ... |
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| PLENARY CONGRESS OF THE INTERNATIONAL COMMISSION FOR THE SCIENTIFIC EXPLORATION OF THE MEDITERRANEAN SEA (20TH). |
29 DEC 1966 |
|
| Authors:
John D. Costlow Jr; OFFICE OF NAVAL RESEARCH LONDON (UNITED KINGDOM)
|
| An account is given of the XXth Congress of the International Council for the Scientific Exploration of the Mediterranean Sea which was held in Bucharest, Roumania. Papers were presented during the six day period in the eleven committees in biological, chemical, and geological aspects of the Mediterranean Sea, the Black Sea, and the Adriatic. (Author) |
|
| EUROPEAN SCIENTIFIC NOTES. Volume 20, Number 6. |
15 JUN 1966 |
|
| Authors:
Bernard Epstein; Victoria Hewitson; OFFICE OF NAVAL RESEARCH LONDON (UNITED KINGDOM)
|
| This is a monthly publication presenting brief articles concerning recent developments in European scientific research. It is hoped that these articles (which do not constitute part of the scientific literature) may prove of value to both American and European scientists by disclosing interesting information well in advance of the usual scientific publications. The articles are written by members of the scientific staff of ONRL, with an occasional article contributed by ... |
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| MECHANISM OF POLIOVIRUS MULTIPLICATION. |
MAR 1966 |
|
| Authors:
Siegmund Fisher; Carmen Grado; CHILE UNIV SANTIAGO DEPARTAMENTO DE VIROLOGIA
|
| There is considerable inhibition of virus multiplication if AMD is added to HEp 2 cell prior to or together with the virus. This is not ascribable to permeability hindrance of viral penetration. In order to determine the mechanism of this inhibition, infected and non infected cells, treated or not with AMD, were pulse labeled with P32 or uracyl -C14, at various periods during their multiplication in spinner culture. The purified ... |
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| BIOCHEMICAL PROPERTIES OF SQUID AXON MEMBRANES. |
FEB 1966 |
|
| Authors:
Mitzy Canessa; Fernando Vargas; Cecilia Hidalgo; Valentina Riveros; Italo Zamudio; CHILE UNIV SANTIAGO LABORATORIO DE BIOFISICA
|
| Biochemical and physiological studies in the giant axons of the Chilean squid Dosidicus Gigas were carried out in order to correlate metabolic dependent sodium transport and the enzymic profile of nerve membranes. Membrane fractions were isolated from the sheath of giant fibers by means of differential centrifugations and its ATP splitting system was studied as a function of pH, cations, anions composition of the media, as well as the effect ... |
|
| ANATOMICAL LOCALIZATION OF TARGET LEARNING AND MEMORY. |
1966 |
|
| Authors:
J. Z. Young; UNIVERSITY COLL LONDON (ENGLAND) DEPT OF ANATOMY
|
| Contents: Visual and tactile memories; Innervation of the viscera; Neuro-venous tissue; Conduction velocity; Food intake and growth; Feeding apparatus; Learning after delayed rewards; Electronmicroscopy of degenerating fibres and stellate ganglion; Command motor centres (peduncle lobe of octopus); Electronmicroscopy of tactile centres; Transmitters in brain of octopus. |
|
| FINAL REPORT ON GRANT NO. AF-EOAR-62-37, |
17 NOV 1965 |
|
| Authors:
J. Z. Young; UNIVERSITY COLL LONDON (ENGLAND) DEPT OF ANATOMY
|
| The work showed how the animals may be prepared and kept for electrical recording. It made a beginning with the study of afferent impulses in the optic nerves. The presence of efferent impulses in the optic nerves and their influence on the electroretinogram. Impulses were shown for the first time in nerve fibres of the statocyst. Individual fibres of the lateral crista have been shown to respond both to low-frequency ... |
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| POLARIZED LIGHT AND THE FUNCTIONAL ORGANIZATION OF THE COMPOUND EYE. |
1965 |
|
| Authors:
Talbot H. Waterman; YALE UNIV NEW HAVEN CONN DEPT OF BIOLOGY
|
| The long range aim of this research program was to investigate the mechanism and biological significance of the polarized light sensitivity of arthropods first demonstrated in the honey-bee by Karl von Frisch in 1948. The operational objectives of the work naturally developed in ways which were not completely anticipated at the beginning so that three related, yet distinct, lines of research were in fact pursued under the subject contract. Their ... |
|
| THE TWO MEMORY SYSTEMS OF THE OCTOPUS. |
1965 |
|
| Authors:
J. Z. Young; G. Gray; M. Nixon; H. Maldonado; T. Osman; UNIVERSITY COLL LONDON (ENGLAND)
|
| The report covers work in Naples and London June 1964-65 on the two memory systems of Octopus. Subsidiary investigations have included studies and efferent pathways for the systems for killing and eating the prey. The numbers of nerve cells and fibres involved, their diameters and conduction velocities have also been studied. |
|
| LEARNING AND ASSOCIATED PHENOMENA IN INVERTEBRATES. |
1964 |
|
| Authors:
W. H. Thorpe; Demorest Davenport; ASSOCIATION FOR THE STUDY OF ANIMAL BEHAVIOUR HARPENDEN (ENGLAND)
|
| Contents: Learning, world models and pre-adaptation; Paramecia, planaria and pseudo-learning; Studies of the behaviour of Paramecium aurelia; Behavioural studies of the coelenterate Hydra piradi; Behaviour of sessile coelenterates in relation to some conditioning experiments; Adaptive changes in cnidarians; Cannibals, chemicals and contiguity; Behaviour of planaria in instrumental learning paradigms; Learning in planarians; Learning in annelids and attempts at the chemical modification of this behaviour; Learning abilities of nereid polychaetes and ... |
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| SHAPE DISCRIMINATION BY RATS: SQUARES AND RECTANGLES, |
1964 |
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| Authors:
N. S. Sutherland; A. E. Carr; OXFORD UNIV (ENGLAND)
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| Sixteen rats were trained to discriminate between a square and a rectangle: both shapes were presented in different orientations to different animals. All animals were trained in succession with positive shape only, positive and negative shapes presented simultaneously, positive and negative shapes presented successively; finally they were given tests with 18 transfer shapes presented singly. Although the rats showed a strong preference for the square early in training, they later ... |
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| INVESTIGATIONS OF THE CHEMICAL COMPOSITION AND MOLECULAR ORGANIZATION OF NERVE AXONS |
29-Apr-1963 |
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| Authors:
Francis O Schmitt; MASSACHUSETTS INST OF TECH CAMBRIDGE
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| Physicochemical and analytical studies of the fibrous protein and other constituents of the axoplasm of the giant fibers of the large squid Dosidicus gigas were made. Axon material was dissected from a large number of squid and stock piled for future analysis. Initial experiments were made in an investigation of the possible function of the fibrous protein which is ubiquitous to all neurons. Consideration was given to the possible role ... |
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