Geochemistry of ODP Hole 111-504B basalts (Table 2)

Fifty samples of basalt recovered during ODP Leg 111 from the dikes (Layer 2C) of Hole 504B (1350.0-1562.3 m below seafloor) were analyzed by X-ray-fluorescence techniques. All of the samples are highly depleted in magmaphile elements relative to other mid-ocean ridge basalts, with TiO2 = 0.75-1.24 wt%, Na2O = 1.59-2.22 wt%, Zr = 38-64 ppm, Nb = 0.3-1.5 ppm, and Y = 20-30 ppm (for samples containing 0%-2% phenocrysts), but have ratios of highly incompatible elements similar to normal Type I mid-ocean ridge basalts (e.g., Zr/Nb > 30). Abundances of compatible elements are similar to those of typical mid-ocean ridge basalts, with MgO = 7.2-9.2 wt%, Fe2O3* = 9.3-12.5 wt%, Ni = 55-164 ppm, and Cr = 26-388 ppm. Approximately 2% of the samples recovered from the top part of Hole 504B are similar to normal Type I or Type II ocean floor basalts. However, all of the analyzed Leg 111 samples from Hole 504B are depleted basalts. Aphyric dike rocks from Leg 111 are virtually identical to the depleted aphyric samples recovered from the pillow lavas and dikes in the upper 1075 m of Hole 504B during DSDP Legs 69, 70, and 83, with the exception of elements readily altered by seawater (Sr, Rb, and K). These elements reach a maximum in both abundance and variability in the pillow lavas of the upper 571.5 m of Hole 504B and decline to more constant values in the dike system sampled on Legs 83 and 111, apparently as a result of a decrease in porosity and increase in alteration temperatures relative to the pillow lavas. Based on compositional similarities to the vast majority of the pillows and flows, the dikes sampled on Leg 111 appear to be the feeder system for the pillow lavas in the upper part of Hole 504B. The incompatible-element-depleted compositions of the Costa Rica Rift Zone basalts are consistent with multistage melting of a normal mid-ocean ridge source.

Paleomagnetic properties of basalts of ODP Hole 111-504B (Table 3)

Downhole magnetic field measurements were conducted in Hole 504B on the Costa Rica Ridge during ODP Leg 111. Three magnetic groups within oceanic basement at this site are tentatively defined, based on the interval mean values of the downhole magnetic field. Statistical analyses show that there are significant differences in the inclinations of natural remanent magnetization (NRM) among the three magnetic groups. Although this could be caused by various factors, we explain the inclination difference among the three groups by simple tectonic displacements of basement by faulting after its formation, about 5.9 Ma ago. Based on the intensities of NRM and inclinations measured in the basement core samples drilled in Hole 504B on DSDP Legs 69, 70, and 83 and ODP Leg 111, the investigated section of basement formation can be divided into three or four magnetic zones that parallel the zones defined by the downhole magnetic field, alteration, and lithology. Downhole magnetic field and paleomagnetic data generally correlate positively, in spite of some discrepancies. The magnetic susceptibility values of the core samples were used to derive the insitu NRM from the downhole magnetic field data.

(Table 1) Sulfur and oxygen isotopes from two anhydrite samples recovered from DSDP Hole 70-504B

The first anhydrite reported from oceanic basalts occurs in altered basalts drilled during DSDP Leg 70 from Hole 504B. Anhydrite has been identified in several samples, two of which were studied in detail. Anhydrite in Sample 504B-40-3 (130-135 cm), which was acquired at 310 meters sub-basement, occurs in a dolerite at the center of a vug rimmed by saponite and calcite. Red iron-hydroxide-rich alteration halos occur from 0 to 310 meters sub-basement; primary sulfides in these halos are oxidized, and the rocks have lost large amounts of sulfur. The anhydrite in this sample has a d34S value of 18.5 per mil, and it is interpreted to have formed from a fluid containing a mixture of seawater sulfate (20.9 per mil) and basaltic sulfur (0 per mil) released during the oxidation of primary sulfides. Anhydrite in Sample 504B-48-3 (14-18 cm), which was found at 376 meters sub-basement, occurs intergrown with gyrolite at the center of a 1-cm-wide vein that is rimmed by saponite and quartz. At sub-basement depths below 310 meters to the bottom of the Leg 70 section (562 m sub-basement), the rocks exhibit the effects of anoxic alteration with common secondary pyrite. Anhydrite in Sample 504B-48-3 (14-18 cm) has a d34S value of 36.7 per mil, and it is interpreted to have formed from seawater-derived fluids enriched in 34S through sulfate reduction. Temperatures of alteration calculated from oxygen isotope data range from 60 to 100°C. Sulfate reduction may have occurred in situ, or elsewhere at higher temperature, possibly deeper in the crust. The secondary mineral paragenetic sequence indicates a progressive decrease in Mg and increase in Ca in the circulating fluids. This eventually led to anhydrite formation late in the alteration process.

Quality of cause-of-death reporting using ICD-10 drowning codes : a descriptive study of 69 countries

Background: The systematic collection of high-quality mortality data is a prerequisite in designing relevant drowning prevention programmes. This descriptive study aimed to assess the quality (i.e., level of specificity) of cause-of-death reporting using ICD-10 drowning codes across 69 countries.---------- Methods: World Health Organization (WHO) mortality data were extracted for analysis. The proportion of unintentional drowning deaths coded as unspecified at the 3-character level (ICD-10 code W74) and for which the place of occurrence was unspecified at the 4th character (.9) were calculated for each country as indicators of the quality of cause-of-death reporting.---------- Results: In 32 of the 69 countries studied, the percentage of cases of unintentional drowning coded as unspecified at the 3-character level exceeded 50%, and in 19 countries, this percentage exceeded 80%; in contrast, the percentage was lower than 10% in only 10 countries. In 21 of the 56 countries that report 4-character codes, the percentage of unintentional drowning deaths for which the place of occurrence was unspecified at the 4th character exceeded 50%, and in 15 countries, exceeded 90%; in only 14 countries was this percentage lower than 10%.---------- Conclusion: Despite the introduction of more specific subcategories for drowning in the ICD-10, many countries were found to be failing to report sufficiently specific codes in drowning mortality data submitted to the WHO.

Fine-needle aspiration cytology of Merkel cell carcinoma-A review of 69 cases

Background This study reviewed the clinical presentation, cytologic findings and the immunophenotype of 69 Merkel Cell Carcinoma (MCC) cases sampled by FNA. Methods Demographic and clinical data, the cytology findings and results of ancillary testing were reviewed. Results Median patient age was 78 years (37 – 104) with a 1:1.8 female to male ratio. The most common FNA sites sampled included lymph nodes in the neck, the axillary region, the inguinal region and the parotid gland. Most patients had a history of MCC (68%) &/or non-MCC malignancy (70%). The common cytologic pattern was a cellular smear with malignant cells arranged in a dispersed pattern with variable numbers of disorganised groups of cells. Cytoplasm was scant or absent and nuclei showed mild to moderate anisokaryosis, stippled chromatin, inconspicuous nucleoli and nuclear molding. Numerous apoptotic bodies were often present. Cell block samples (28 cases) were usually positive for cytokeratins in a perinuclear dot pattern, including 88% of cases with CK20 positivity. CD56 was the most sensitive (95%) neuroendocrine marker on cell blocks and was also positive with flow cytometry in 9 cases tested. Conclusions MCC is most commonly seen in FNA specimens from the head and neck of elderly patients, often with a history of previous skin lesions. Occasional cases present in younger patients and some may be mistaken for other round blue cell tumors, such as lymphoma. CD 56 may be a useful marker in cell block preparations and in flow cytometric analysis of MCC.

Sapientia, 1963, Vol. XVIII, nº 69-70 (número completo)

Contenido: Materialismo dialéctico y totalitarismo / Octavio N. Derisi – Luis Lavelle / Regis Jolivet – La continuidad entre la dogmática jurídica, la teoría general y la filosofía del derecho / Avelino M. Quintas – Lógica y logística / Carlos A. Lungarzo Melcon – La ética existencialista y marxista / Octavio N. Derisi – Ontología del arte moderno / Ángel T. Lo Celso – Notas y comentarios -- Bibliografía

Letras, Nº 69-70, 2014

Contenido: Viel, así en el cieslo como en el canon : un lugar en el corpus de la poesía argentina / María Amelia Arancet Ruda -- Hacia un canon poético místico en clave estético teológica : vigencia de la figura del centro como expectación del Otro / Cecilia I. Avenatti de Palumbo -- La traducción como "instrumento poético" : Raúl Gustavo Aguirre, entre Rimbaud y Char / Magdalena Cámpora -- Giuseppe Ungaretti : un itinerario lírico / Daniel Alejandro Capano -- Teoría y práctica de la poesía cinética en Composición de lugar (1976) de Amanda Berenguer / María Lucía Puppo -- Poesía, subjetividad y memoria en la escritura de Alicia Genovese / Alicia Salomone -- "No nos legaron cartas, ni alianzas, ni retratos" : Olga Orozco o la autofiguración desde la muerte / Sebastián Urli -- Poesía lírica y teoría crítica del siglo XX : entrevista a Miguel Ángel Garrido Gallardo / Sofía M. Carrizo Rueda -- Reseñas bibliográficas

Control de malezas en el cultivo de la soya (Glycine max L. Merril) variedad (Biloxi y hardee) 69-341

En el Centro Experimental Agropecuario La Calera, Managua, Nicaragua, se estableció en siembra de agosto a noviembre de 1976, un ensayo para determinar el tratamiento mas efectivo y rentable en el control de las malezas del cultivo de la soya (Glycine max L. Merril). Se escogió la variedad (Biloxi x Hardee) 69-341 de crecimiento determinado y ciclo vegetativo intermedio de 90-100 días. Los tratamientos que se evaluaron fueron los siguientes: Alachlor, Metribuzin, Linuron, Trifluralina, Alachlor + Metribuzin, Alachlor + Linuron, Alachlor + Trifluralina, Metribuzin + Lanuron, Metribuzin + Trifluralina, Linuron + Trifluralina en dosis de 2049,5 ml, 497,70 g, 966,00 g, 533,75 ml, 1024,75 ml + 248,85 g, 1024,75 ml + 483,00 g, 1024,75 ml + 266,87 ml, 248,85 g + 483,00 g, 248,85 g + 266,87 ml y 483,00 g, + 266,87 ml, por hectárea respectivamente, usando como comparadores un tratamiento mecánico y un testigo absoluto. Los tratamientos fueron distribuidos en un diseño de bloques completos al azar, con cuatro repeticiones. La parcela experimental consto de ocho surcos de cinco metros de largo, espaciados a cincuenta centímetros entre si y a 2,50 centímetros entre planta, correspondiendo a la parcela útil los cuatro surcos centrales a los cuales se les elimino 50,0 centímetros en cada extremo. El análisis de varianza practicado en los rendimientos de granos y en los porcentajes de control de malezas determino diferencia altamente significativa entre tratamientos al nivel de 0,01 de probabilidad de error. La mezcla de Alachlor + Metribuzin fue el tratamiento herbicida que ejerció el mayor control sobre gramíneas y hojas ancha, con 97,00 por ciento de control hasta los 60 días de emergida la soya. Los tratamientos Metribuzin, Metribuzin + Trifluralina y Alachlor fueron estadisticamente igual al nivel del 0,05 de probabilidad de error con: 74,00; 72,00 y 71;00 por ciento. Los tratamientos que menor porcentaje de control de malezas ejercieron hasta los 60 dias fueron Linuron y Linuron + Trifluralina con 34.00 por ciento. Los mayores rendimientos significativos de grano de soya, se lograron con: testigo mecanico, Alachlor + Metribuzin, Alachlor, y Alachlor + Linuron obteniendo 2,539.00, 2.294.00, 2.279.00 y 2.194.00 kilogramos por hectárea respectivamente. Los menores rendimientos correspondieron a: Trifluralina con 1,103.00 hectarea y testigo absoluto con 844.00 por hectarea. El analisis economico de los rendimientos por tratamiento, revelo que los mayores ingresos netos se obtuvieron con: testigo mecánico, Alachlor + Metribuzin, y Alachlor y Alachlor + Linuron de: 1,945.22, 1,800.12, 1,771.87 y 1,668.31 córdobas por hectárea respectivamente, pero la mayor relación beneficio-costo se logro con los tratamientos Alachlor, Alachlor + Metribuzin, testigo mecánico y Alachlor + Linuron, con 2.31, 2.30, 2.23 y 2.21 respectivamente.

Cruise Report 69-S-1: Bottomfish Program

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Cruise Report 69-S-2: Prawns

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Cruise Report 69-S-3: Pelagic fish and trawling survey of Santa Barbara oil spill

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Cruise Report 69-S-4: Bottomfish Program

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Cruise Report 69-S-5: Bottomfish Program

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Cruise Report 69-S-6: Bottomfish Program

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