879 research outputs found
Beet silage: chemical composition, fermentacion parameters and use of NIRS Technology as a tool to identify ensiled beet varieties
8 páginas, 2 figuras, 4 tablas.--Comunicación presentada a la 53ª Reunión Científica de la Sociedad Española para el Estudio de los Pastos (SEEP). "Pastos y PAC 2014-2020"[EN] The use of beet root for the purpose of feeding the dairy
cattle could be constrained by the scarce knowledge
about the characteristics of this feed after it has been
ensiled. To investigate the feasibility of using the NIRS
methodology to analyze the chemical composition of
ensiled beets and to discriminate between beet varieties,
roots of four beet varieties were ensiled (Sandrina KWS
1193, Tilly KWS 2733, Gerty KWS 2734 and Páramo
3359) using laboratory silos (600 ml of capacity).
Although small differences (P<0.05) in chemical
composition were found between treatments, the range
of variation was narrow, especially for crude protein,
which reached low and quite uniform values. The pH
values were lower than 4 for all the varieties and the
fermentation was mainly acetic. Whereas NIRS spectra
of raw silages did not allow beet varieties discrimination
or chemical composition prediction, spectra from dried
and milled samples suggest that NIRS technology could
be used as a tool for both purposes. NIRS spectra of
silage juices could also be useful to establish beet variety.[ES] El empleo de raíces de remolacha en la alimentación del
vacuno de leche se ve limitado por el escaso
conocimiento acerca de las características de este
alimento una vez ensilado. Para estudiar la composición
química y los principales parámetros de fermentación de
ensilados de remolacha y explorar la posibilidad de
emplear la tecnología de espectroscopía de reflectancia
en el infrarrojo cercano (NIRS) para la estimación de los
parámetros estudiados y para discriminar distintas
variedades de remolacha, se ensilaron raíces de cuatro
variedades de remolacha (Sandrina KWS 1193, Tilly
KWS 2733, Gerty KWS 2734 y Páramo 3359)
empleando micro-silos de 600 ml de capacidad. Se
detectaron diferencias (P<0,05) entre variedades en
todos los parámetros de composición química de los
ensilados, aunque en el caso de la proteína sólo la
variedad Tilly KWS 2733 presentó un contenido
diferente (P<0,05) a los del resto de las variedades. El
pH alcanzó valores menores que 4 para todas las
variedades y la fermentación fue principalmente acética.
Los espectros NIRS de las muestras de ensilado en
fresco no permitieron ni discriminar entre las variedades
ensiladas ni predecir la composición química. Sin
embargo, los resultados con las muestras secas y molidas
sí apuntan la posibilidad de emplear la tecnología NIRS
con ambos fines. Los espectros NIRS de los jugos del
ensilado también podrían resultar útiles para establecer
la variedad de remolacha ensilada.Este trabajo se financió con el contrato
asociado a proyecto CDTI titulado: Procesado
y estudio de variedades de remolacha para
su utilización en alimentación animal (código
100102120005). Organismo financiador: INDUSTRIAS
DE NUTRICIÓN ANIMAL, S.L.Peer reviewe
Concentración, Hold-up e Información de las Colocaciones Bancarias: Evidencia de Empresas Chilenas
In this paper we empirically study bank-client relationships using a sample of Chilean manufacturing firms. We examine whether concentration and the duration of bank-client relationships affect the volume of bank lending. Our results indicate that lower concentration, measured by the number of banks a firm borrows from, is associated ith a large and positive effect on borrowing. The length of borrower-lender relationships has a positive—although not always statistically significant—effect on the amount borrowed.
Pseudoaneurisma de la arteria geniculada superior lateral secundaria a artroplastia de rodilla: Aportación de un caso
El pseudoaneurisma es una complicación infrecuente en la cirugía ortopédica de rodilla. Los pocos casos descritos generalmente están en relación con cirugía artroscópica. Presentamos un caso de pseudoaneurisma de la arteria geniculada superolateral secundario a artroplastia de rodilla en un varón de 69 años. El diagnóstico se realizó mediante arteriografía. Se trató con éxito mediante hemostasia y resección química.Pseudoaneurysm is an uncommon complication in knee orthopaedic surgery. There are few cases reported an most of them are secondary to arthroscopic techniques. We report a case of pseudoaneurysm of the superolateral genicular artery after knee arthroplasty in a 69-year-old-man. The diagnosis was made with arteriographay, and treatment was a successful hemostasia and surgical resection
Fibrohistiocitoma maligno óseo tras degeneración de enfermedad de Paget Caso clínico y revisión de la literatura
El fibrohistiocitoma maligno óseo es un tumor de estirpe mesenquimal poco frecuente,
pero de alta agresividad. Se suele presentar de forma primaria, aunque a veces lo hace sobre
lesiones previas en el hueso. Puede ser difícil de diferenciar histológicamente de otros tumores,
pero es una entidad propia desde el punto de vista anatomopatológico. Presentamos un paciente
con enfermedad de Paget que desarrolló un fibrohistiocitoma maligno óseo en el fémur
sobre el hueso pagético. Fue tratado mediante desarticulación de cadera. No se usó quimioterapia
como tratamiento coadyuvante debido a su avanzada edad y situación basal. A los 18 meses se
encuentra asintomático y sin signos de recurrencia. Se hace una revisión de la literatura acerca
de este tumor.Malignant fibrous histiocytoma of bone is a rare but highly agressive mesenchimal
tumor. It usually arises as a primary tumor but sometimes it can be associated with pre-existing bone
abnormalities. Histologically it can be missdiagnosed with other tumors. We report a case of malignant
fibrous histiocytoma of bone in the femur in a patient with Paget's disease treated by hip
desarticulation. We didn't use chemotherapy because his elderly status. At 18 months follow up, the
patient is symptom-free and neither local recurrence nor metastasis have been found. A review of
the literature has been carried out
Rumen fermentation and diet degradability in sheep fed sugarcane (Saccharum officinarum) silage supplemented with Tithonia diversifolia or alfalfa (Medicago sativa) and rice polishing
The objective of this study was to evaluate ruminal fermentation (i.e. pH, ammonia, and volatile fatty acid concentrations) and in situ degradability of diets in sheep fed sugarcane silage (SCS) supplemented with Tithonia diversifolia (Td) or alfalfa (Medicago sativa) hay (A), with or without rice (Oriza sativa) polishing (RP) as an energy source. Four Blackbelly sheep (35 kg average body weight) with rumen cannula were used. The experimental diets were (g/kg of dry matter): Diet 1) SCS (686) + Td (294), Diet 2) SCS (460) + Td (226) + RP (294), Diet 3) SCS (637) + A (343), and Diet 4) SCS (441) + A (245) + RP (294). The remainder (20 g/kg of dry matter) was composed by minerals supplement and salt. Samples of diets were incubated into rumen for 3, 6, 9, 12, 24, 30, 36, 48, and 72 h to determine in situ degradability. Data were analysed with a linear mixed model. The lamb, period and lamb nested in period*diet were considered as a random variable. The inclusion of RP improved the degradability of diets and ammonia production in the rumen. The acetic, propionic, and butyric acid concentrations (mmol/100 mL) in rumen increased (P<0.03) when diets with alfalfa and RP were provided. The degradability of diets based on sugarcane silage supplemented with either alfalfa or Tithonia diversifolia was improved (P<0.05) with the rice polishing inclusion, with no difference (P>0.05) between these forages. In conclusion, energy supplementation, not necessarily from starch, is important to improve rumen fermentation and degradability of diets based on sugarcane silage
Perpendicular magnetic anisotropy in Nd-Co alloy films nanostructured by di-block copolymer templates
et al.Nd-Co amorphous magnetic films with perpendicular magnetic anisotropy have been grown on nanostructured templates prepared with self-organized di-block poly(styrene)-block-poly(4-vinylpyridine) copolymer layers with a periodic structure of 60 nm spaced pores. These templates modify both the magnetic film topography and mechanical strain on a local scale. The effect of these structural changes is particularly noticeable in the low thickness range of the magnetic films where the transition from in-plane to out-of plane magnetization takes place. The Nd-Co films grown on the copolymer template present lower perpendicular magnetic anisotropy and, also, stronger stripe domain pinning effects in comparison with reference films grown on flat Si substrates. © 2012 American Institute of Physics.Work supported by Spanish MEC under Grants FIS2008-06249 and Consolider CSD2007-00010 and by CAM under Grant S2009/MAT-1726.Peer Reviewe
Directory of Atmospheric, Hydrographic and Biological datasets for the Canary Current Large Marine Ecosystem
Environmental and biological data-sets were recovered from oceanographic surveys and other
observation sources (e.g. tide gauges) since the 40s. This rescue and mining exercise was
carried out in cooperation with the countries bordering the CCLME and other nations
undertaking research in the region (i.e. Morocco, Mauritania, Senegal, Gambia, Guinea, Guinea
Bissau, Cape Verde, Spain, Norway, Germany and France). A total of 425 data-sets, 27 databases
and 21 time-series sites have been identified in the area. A substantial part of them were
rescued from archives supported in paper copy. Finally, a directory of meta-data referring 99
data-sets and data-bases has been published. This catalogue and the recovered data offer an
exceptional opportunity for the researchers in the CCLME to study the dynamics and trends of a
multiplicity of variables, and will enable them to create their own time-series, baselines and
climatologies under a spatial and temporal perspective. It will produce new and valuable
information on changes produced during the last 35 years in this region, going from climatic
changes to shifts in species diversity and populations due to natural and human induced
factors. This directory is the first result of the project “Enhancing oceanography capacities on
Western Africa Countries” funded by the Spanish Agency for International Development
Cooperation (AECID) and coordinated by the IOC-UNESCO and the IEO. The project aims to
reinforce transboundary cooperation in the CCLME and to facilitate access and data flow to
existing scientific information and its utilization by the scientists, politicians, industry and civil
society.http://unesdoc.unesco.org/images/0023/002314/231430E.pd
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