Análise de sedimentos associados à atividade de perfuração na plataforma continental externa, Bacia Potiguar - Brasil

This study was developed in an area located on the outer shelf in the Potiguar Basin, Brazilian equatorial margin; this tropical shelf represents a modern, highly dynamic mixed carbonate-siliciclastic system. Field sampling was carried out during 3 cruises surrounding a shallow-water exploratory well to compare sediment properties of the seafloor, including grainsize, texture, mineral composition, carbonate content, and organic matter. Cruise 1 (C1) was carried prior to drilling, while Cruise 2(C2) and 3 (C3) respectivelly 3 and 12 months after drilling. The sample grid used had 16 stations located along 4 radials from 50 m the well up to a distance of 500 m. Sediments were analyzed in the first 0-2 cm, and 0-10 cm layers. The results show that sedimentary cover around the well is poor to very poorly sorted, with the particle size predominantly in the medium to coarse sand fraction, followed by gravel and mud. The content of calcium carbonate is greater than 96%, associated to bioclastic sediments, and the content of organic matter is less than 12%. Only minor sedimentological variations occured in the area affected by drilling operations. Mainly observed during the second cruise, in terms of a change in grain size distribution associated to an increase in siliciclastic content, This impact occurred in the most surficial sediment (0-2 cm), in the radial closest to the well (50 m), and could suggest the effects of drilling. However, in the third cruise, one year after drilling, the sediments return to show the same characteristics as in the first cruise. These results show no significant sedimentological variations due to drilling activity, and indicate that ocean dynamics in this area was high enough to recover the environment original characteristics.

Ecophysiology of Adonis distorta, a high-mountain species endemic of the Central Apennines

Morphological, anatomical and physiological plant and leaf traits of A. distorta, an endemic species of the Central Apennines on the Majella Massif, growing at 2,675 m a.s.l, were analyzed. The length of the phenological cycle starts immediately after the snowmelt at the end of May, lasting 128 ± 10 days. The low A. distorta height  (Hmax= 64 ± 4 mm) and total leaf area (TLA= 38 ± 9 cm2) associated to a high leaf mass area (LMA =11.8±0.6 mg cm−2) and a relatively high leaf tissue density (LTD = 124.6±14.3 mg cm−3) seem to be adaptive traits to the stress factors of the environment where it grows. From a physiological point of view, the high A. distorta photosynthetic rates (PN =19.6 ± 2.3 µmol m−2 s−1) and total chlorophyll content (Chla+b = 0.88 ± 0.13 mg g−1) in July are justified by the favorable temperature. PN decreases by 87% in September at the beginning of plant senescence. Photosynthesis and leaf respiration (RD) variations allow A. distorta to maintain a positive carbon balance during the growing season becoming indicative of the efficiency of plant carbon use. The results could be an important tool for conservation programmes of the A. distorta wild populations.

Haematological and biochemical blood study in baby alpaca with diarrhoea

The aim of this study was to determine the haematological value and biochemical blood in baby alpacas with enteric disorder. A total of 30 blood and serum samples were collected from alpacas of 1 month old with diarrhoea and 5 blood samples of clinically healthy baby alpacas (controls). The animals were from communities in the central Andes from Peru. About haematology were determined haematocrit, haemoglobin concentration, red blood count and white blood count that were not significantly different between control animals and animals with diarrhoea. Moreover, biochemical blood parameters as total protein, albumin and calcium decrease significantly (p<0.05). We conclude that our results could be considered as factors in the mortality of baby alpaca by infectious diarrhoea.

Enigmas monetarios en el derecho local. Los mencales y maravedís en los fueros castellanos

La historia de la moneda en la Castilla medieval ha estado siempre mediatizada por la convivencia no siempre armónica entre dos sistemas monetarios muy diferentes. Uno basado en la plata, de origen europeo, otro centrado en el oro, de raíces árabes. La necesidad de conectar y de establecer unas equivalencias entre ellos se convirtió pronto en una necesidad, máxime cuando las monedas de oro incrementaron sus variantes. En esta compleja situación aparecen mencales y maravedís citados conjuntamente en muchos fueros: Zorita, Uclés, Cuenca,... sin que su naturaleza quede del todo clara. Este artículo compara estas referencias y analiza las equivalencias que los unen. Como colofón al trabajo podemos afirmar que los maravedís citados en cada texto corresponden a monedas áureas de distinto peso y valor mientras el mencal es identificado con un ponderal de oro que los relaciona.

Manuel Murguía e Rosalía de Castro nos inicios como escritora de Narcisa Pérez Reoyo

En 1865 Narcisa Pérez Reoyo publica en A Coruña su primer poemario, Cantos de la infancia, prologado por Manuel Murguía y que incluye un poema dedicado a Rosalía de Castro. Este artículo se ocupa de las relaciones del matrimonio Murguía-Castro con la escritora novel, en el contexto de la literatura escrita por mujeres en el siglo XIX y de la construcción de la literatura gallega.

Jokainen on oma yrittäjänsä. Identiteetti, talous ja yhteiskunta Image-lehdessä vuosina 1990–1993

Tutkielman aiheena ovat lausumat identiteetistä, taloudesta ja yhteiskunnasta aikakauslehti Imagessa vuosina 1990–1993. Tutkielman alkuperäislähteinä on käytetty Imagen artikkeleita, joita tarkastellaan 1990-luvun alun Suomen yhteiskunnallisen murroksen kontekstia vasten. Tälle aikakaudelle keskeisiä tekijöitä olivat syvä lama, Neuvostoliiton romahdus sekä EU-jäsenyyshanke. Tutkielma käsittelee yhteiskunnallisen murroksen kuvaamista sekä lehden tekijöiden ihanteita ja argumentaatiota vertailevan diskurssianalyysin keinoin. Työssä lausumia käsitellään temaattisesti liittäen ne esimerkiksi sukupolvikapinan, globalisaation ja kilpailutalouden puheavaruuksiin. Vuonna 1985 perustettu Image haki 1990-luvun alkupuolella paikkaansa julkaisuna. Vapaaehtoisvoimin toimitetusta kulttuurialbumista alettiin muovata kaupallista aikakauslehteä, joka tähtäsi kunnianhimoiseen yhteiskunnalliseen journalismiin. Tekijät halusivat haastaa vakiintuneen suomalaisen identiteetin ja korostaa kaupunkilaisen kulutuskulttuurin ja luovan työn merkitystä syvän taloustaantuman keskellä. Tutkielmassa esitettyjen tulosten mukaan Imagen 1990-luvun alun retoriikassa keskeistä oli Suomen liberalisoiminen. Yksilöllisempää, moniäänisempää ja kriittisempää kansalaisuutta ajettiin voimakkaasti samalla, kun Suomi haluttiin sitoa länsieurooppalaiseen viitekehykseen. Johtajavaltaiseksi koettua suomalaisuutta, korporatiivista kulttuuria ja suurten ikäluokkien valta-asemaa kritisoitiin lehdessä runsaasti. Tilalle haluttiin tuoda kosmopoliittinen identiteetti, joka kiinnittyisi etenkin luovaan työhön ja kaupunkilaiseen kulutuskulttuuriin. Image kiinnittyy tarkasteluajankohtansa kontekstissa laajempiin yhteiskunnallisiin puheavaruuksiin, joissa vaaditaan markkinalähtöisempää ja vapaampaa Suomea. Tutkielman keskiöön nouseekin lehden yhteiskunnan ja identiteetin liberalisointia sekä suomalaisen identiteetin uudistamista vaativa retoriikka, jonka yhteydet 2010- luvun talousvetoiseen yhteiskunnalliseen puheeseen ovat selkeät. 1990-luvun alussa esitettyjen puheenvuorojen tarkastelu auttaa siis ymmärtämään myös myöhempää yhteiskunnallista keskustelua.

Caso de estudio. Un libro bien vendido

En agosto de 2002, la alta gerencia del Grupo Editorial Lama, una de las más grandes empresas editoriales en América Latina, venía muy preocupada por el bajo crecimiento de sus ventas en Colombia en los dos últimos años, en contraposición a los extraordinarios resultados de crecimiento y expansión que se estaban logrando en los mercados internacionales. Editorial Lama tenía ya más de cuarenta años en el mercado colombiano y había conquistado una posición de liderazgo en sus dos divisiones principales (Textos Escolares y Libros de Interés General), pero la División de Libros de Interés General (DIG) no había logrado las metas de crecimiento propuestas para el mercado colombiano en los dos últimos años, a pesar de haber aumentado la producción de títulos nuevos en más de un 38 porciento cada año, entre los que podían contarse varios de autores muy reconocidos.

Morfodinâmica do Banco das Três Marias – Barra do Rio Grande

Dados batimétricos detalhados obtidos na antepraia adjacente ao Molhe Oeste conhecida como banco das Três Marias, evidenciaram a presença de uma fossa junto a extremidade do molhe e um banco na forma de domo a SO da depressão. O banco tem sua base e crista respectivamente nas cotas de 8 e 6 m. A feição é aproximadamente oval, com o eixo maior semiparalelo à costa (sentido NNE – SSO) medindo aproximadamente 1600 m. O eixo menor, quase transversal à costa (sentido L-O), apresenta cerca de 1200 m de extensão. O banco representa o resquício do lobo terminal do delta de maré vazante (barra) da laguna formado durante a fixação de sua desembocadura. A fossa junto ao cabeço do molhe apresenta pendente íngreme, que inicia na isóbata de 8 m e alcança a isóbata dos 17 m, sendo provavelmente formada pela ação da corrente longitudinal de SO para NE. Foram coletadas também amostras de sedimento. Estes dados evidenciaram ao menos três subambientes refletindo diferentes níveis de energia. Do mais enérgico para o menos: o banco, onde o sedimento é mais grosso e melhor selecionado, a antepraia, com o sedimento pouco mais fino e a fossa, onde foi amostrada lama, mal selecionada.

Accumulation, persistence and effects of indospicine residues in camels fed Indigofera plant

Indospicine (L-2-amino-6-amidinohexanoic acid) is a natural hepatotoxin found in all parts of some Indigofera plants such as I. linnaei and I. spicata. Several studies have documented a susceptibility to this hepatotoxin in different species of animals, including cattle, sheep, dogs and rats, which are associated with mild to severe liver disease after prolonged ingestion. However, there is little published data on the effects of this hepatotoxin in camels, even though Indigofera plants are known to be palatable to camels in central Australia. The secondary poisoning of dogs after prolonged dietary exposure to residual indospicine in camel muscle has raised additional food safety concerns. In this study, a feeding experiment was conducted to investigate the in vivo accumulation, excretion, distribution and histopathological effects of dietary indospicine on camels. Six young camels (2 – 4 year old), weighing 270 − 390 kg were fed daily a roughage diet consisting of Rhodes grass hay and lucerne chaff, supplemented with Indigofera and steam flaked barley. Indigofera (I. spicata) was offered at 597 mg DM/kg body weight (bw)/day designed to deliver 337 µg indospicine/kg bw/day, and fed for a period of 32 days. Blood and muscle biopsies were collected over the period of the study. Concentrations of indospicine in the plasma and muscle biopsy samples were quantitated by validated ultra-performance liquid chromatography−tandem mass spectrometry (UPLC−MS/MS). The highest concentrations in plasma (1.01 mg/L) and muscle (2.63 mg/kg fresh weight (fw)) were found at necropsy (day 33). Other tissues were also collected at necropsy and analysis showed ubiquitous distribution of indospicine, with the highest indospicine accumulation detected in the pancreas (4.86 ± 0.56 mg/kg fw) and liver (3.60 ± 1.34 mg/kg fw); followed by the muscle, heart and kidney. Histopathological examination of liver tissue showed multiple small foci of predominantly mononuclear inflammatory cells. After cessation of Indigofera intake, indospicine present in plasma in the remaining 3 camels had a longer terminal elimination half-life (18.6 days) than muscle (15.9 days), and both demonstrated mono-exponential decreases.