Acinar pancreatic tumor with metastatic fat necrosis

This report deals with a pancreatic tumor associated with metastatic fat necrosis. Our patient displayed the full gamut of nodular panniculitis, polyarthritis, fever, eosinophilia, hyperlipasemia, lytic bones lesions, and marrow fat necrosis. The rheumatologic features are reviewed. Elevated serum lipase is a most helpful laboratory confirmation. The tumor in our patient presented a difficult problem in classification. Although the appearance under light microscopy was most compatible with islet cell carcinoma or islet cell carcinoid, the ultrastructural characteristics were those of acinar carcinoma.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/44384/1/10620_2005_Article_BF01071911.pd

Mediterranean sea turtles: Current knowledge and priorities for conservation and research

This is the final version. Available on open access from Inter Research via the DOI in this recordThe available information regarding the 2 sea turtle species breeding in the Mediterranean (loggerhead turtle Caretta caretta and green turtle Chelonia mydas) is reviewed, including biometrics and morphology, identification of breeding and foraging areas, ecology and behaviour, abundance and trends, population structure and dynamics, anthropogenic threats and conservation measures. Although a large body of knowledge has been generated, research efforts have been inconsistently allocated across geographic areas, species and topics. Significant gaps still exist, ranging from the most fundamental aspects, such as the distribution of major nesting sites and the total number of clutches laid annually in the region, to more specific topics like age at maturity, survival rates and behavioural ecology, especially for certain areas (e.g. south-eastern Mediterranean). These gaps are particularly marked for the green turtle. The recent positive trends of nest counts at some nesting sites may be the result of the cessation of past exploitation and decades of conservation measures on land, both in the form of national regulations and of continued active protection of clutches. Therefore, the current status should be considered as dependent on such ongoing conservation efforts. Mitigation of incidental catch in fisheries, the main anthropogenic threat at sea, is still in its infancy. From the analysis of the present status a comprehensive list of re search and conservation priorities is proposed.C.C. is supported by the project CTM2013-48163 of the Spanish Ministry of Economy and Competitivity. The Cyprus Wildlife Society (CWS) acknowledges the financial support of the Department of Fisheries and Marine Research of the Government to the CWS for the implementation of the Turtle Conservation Project in the period 2010−2016 and for all its assistance to the Society in previous years. J.T. is supported by project Prometeo II (2015-018) of the Generalitat Valenciana and projects MEDSEALITTER-INTERREG and INDICIT of the European Union

Mediterranean sea turtles: current knowledge and priorities for conservation and research

The available information regarding the 2 sea turtle species breeding in the Mediterranean (loggerhead turtle Caretta caretta and green turtle Chelonia mydas) is reviewed, including biometrics and morphology, identification of breeding and foraging areas, ecology and behaviour, abundance and trends, population structure and dynamics, anthropogenic threats and conservation measures. Although a large body of knowledge has been generated, research efforts have been inconsistently allocated across geographic areas, species and topics. Significant gaps still exist, ranging from the most fundamental aspects, such as the distribution of major nesting sites and the total number of clutches laid annually in the region, to more specific topics like age at maturity, survival rates and behavioural ecology, especially for certain areas (e.g. south-eastern Mediterranean). These gaps are particularly marked for the green turtle. The recent positive trends of nest counts at some nesting sites may be the result of the cessation of past exploitation and decades of conservation measures on land, both in the form of national regulations and of continued active protection of clutches. Therefore, the current status should be considered as dependent on such ongoing conservation efforts. Mitigation of incidental catch in fisheries, the main anthropogenic threat at sea, is still in its infancy. From the analysis of the present status a comprehensive list of research and conservation priorities is proposed

Viscosities and Densities of Dilute-Solutions of Glycerol Trioleate Plus Octane, Plus P-Xylene, Plus Toluene, and Plus Chloroform

Dynamic viscosities (eta) and densities (rho) of dilute solutions of glycerol trioleate + chloroform, at 10, 15, 20, 25,and 30 degrees C, and of glycerol trioleate + octane, + p-xylene, + toluene, at 20, 25, 30, 35, and 40 degrees C, were measured. The dynamic viscosities and the excess volumes were correlated with the composition and temperature through empirical relations. The standard deviations from the derived viscosity equation were of the same order of magnitude as the experimental uncertainties. The excess volumes (V-E) have been derived from the density measurements. V-E values were positive for the glycerol trioleate + chloroform system and negative for the other mixtures over the entire range of mole fractions covered in this study. The departure from the ideal behavior is explained on the basis of specific interactions between the components in these mixtures.Journal of Chemical and Engineering Dat

Ab initio molecular orbital calculations of solvent clusters of trans-N-methylacetamide: Structure, ring cluster formation and out-of-plane deformation

The solvation of trans amides has been investigated by the use of full gradient optimization ab initio quantum mechanical calculation techniques. The complexes have been determined at the Hartree-Fock (HF) level with a 4-31G*/4-31G** basis set and at the second-order Moller-Plesset perturbation (MP2) level. Three NMA-water clusters were investigated: trans-NMA with two molecules of water forming a ring cluster at the amide oxygen; trans-NMA with two molecules of water at the amide oxygen forming hydrogen bonds along the direction of the lone-pair electrons; trans-NMA with one molecule of water at the CO group and one at the NH group. In addition, 4-31G* basis set calculations for trans-NMA with two molecules of acetonitrile were performed. The C=O ... H(W) hydrogen bond lengths, electron-density population analysis and molecular-orbital analysis of trans-NMA with two molecules of water at the amide oxygen demonstrate the importance of concurrent water-water and water-(carbonyl) oxygen hydrogen-bond interactions. The complex of trans-NMA with two molecules of water forming a ring cluster at the amide oxygen indicates the formation of a non-planar amide bond and the generation of a chiral centre at the amide nitrogen; this structure has a 5% Boltzmann distribution at room temperature at the MP2 level. Vibrational-frequency analysis shows that its hydrogen-bonded water molecules are vibrationally coupled. Orbital analysis suggests that there is a considerable solute-occupied space reorganization caused by the rearrangement of the water solvent molecules. Comparisons are made with previous theoretical studies of amide-water interactions and experimental spectroscopic, X-ray and neutron-diffraction data on the hydration of amides, peptides and proteins.Journal of the Chemical Society-Faraday Transaction

Viscosities and Densities of Dilute Solutions of Glycerol Trioleate + Octane, + p-Xylene, + Toluene, and + Chloroform

Dynamic viscosities (7) and densities (e) of dilute solutions of glycerol trioleate + chloroform, at 10, 15, 20, 25, and 30 "C, and of glycerol trioleate + octane, + p-xylene, + toluene, at 20, 25, 30, 35, and 40 "C, were measured. The dynamic viscosities and the excess volumes were correlated with the composition and temperature through empirical relations. The standard deviations from the derived viscosity equation were of the same order of magnitude as the experimental uncertainties. The excess volumes (Ve) have been derived from the density measurements. Ve values were positive for the glycerol trioleate + chloroform system and negative for the other mixtures over the entire range of mole fractions covered in this study. The departure from the ideal behavior is explained on the basis of specific interactions between the components in these mixtures.J. Chem. Eng. Dat