Consulta: subjectFacets:"PET"
Registros recuperados: 14
Data/hora: 05/06/2024 13:43:12

Evaluación de envases de polietilentereftalato como fuente de fibra en dietas para rumiantes
Provedor de dados: 32
Autores: Mata Espinosa, Miguel Ángel.
Esta investigación tuvo como objetivo evaluar el potencial de envases de  polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en  engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con  10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de  24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres  niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y  T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo  de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión  alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del  PET (DIVMSPET). En el...
Tipo: Tesis
Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales; Lambs; PET; Rumen fermentation; Rumen bacteria.
Ano: 2009
URL: http://hdl.handle.net/10521/1208

Evaluación de envases de polietilentereftalato como fuente de fibra en dietas para ovinos.
Provedor de dados: 32
Autores: Mata Espinosa, Miguel Ángel.
Esta investigación tuvo como objetivo evaluar el potencial de envases de polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con 10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de 24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del PET (DIVMSPET). En el líquido...
Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales; Lambs; Rumen fermentation; Rumen bacteria; Ganadería; Doctorado.
Ano: 2009
URL: http://hdl.handle.net/10521/2266

Evaluación de envases de polietilentereftalato como fuente de fibra en dietas para rumiantes
Provedor de dados: 32
Autores: Mata Espinosa, Miguel Ángel.
Esta investigación tuvo como objetivo evaluar el potencial de envases de  polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en  engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con  10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de  24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres  niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y  T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo  de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión  alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del  PET (DIVMSPET). En el...
Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales Lambs; PET; Rumen fermentation; Rumen bacteria.
Ano: 2012
URL: http://hdl.handle.net/10521/858

Evaluación de envases de polietilentereftalato como fuente de fibra en dietas para rumiantes
Provedor de dados: 32
Autores: Mata Espinosa, Miguel Ángel.
Esta investigación tuvo como objetivo evaluar el potencial de envases de  polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en  engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con  10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de  24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres  niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y  T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo  de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión  alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del  PET (DIVMSPET). En el...
Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales Lambs; PET; Rumen fermentation; Rumen bacteria.
Ano: 2012
URL: http://hdl.handle.net/10521/852

Comportement mécanique de fibres et d'assemblages de fibres en polyester pour câbles d'amarrage de plates-formes offshore
Provedor de dados: 5
Autores: Lechat, Céline.
Faced with the need to exploit off-shore oil fields at ever increasing depths, lighter replacements are being considered for the standard steel cable mooring systems used for platforms. This study considers the mechanical behaviour of synthetic ropes made of two different materials: PET and PEN. The first is already used in ropes to replace steel, and the second could be a potential competitor. A multi-scale study, involving mechanical tests (mainly tensile, creep and cyclic loading) has been carried out on assemblies of various sizes, from ropes of several hundreds kN breaking load to their smallest components: filaments. Strong correlations were found between the quasi-static behaviour of assemblies and the behaviour of filaments, which in itself is...
Tipo: Text
Palavras-chave: Failure; Fatigue; Creep; Tensile loading; Rope; Yarn; Fibre; PEN; PET; Rupture; Fatigue; Fluage; Traction; Câble; Yarn; Fibre; PEN; PET.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/these-4312.pdf

Envases de polietilentereftalato molidos y su función como sustituto de fibra en la dieta de borregos
Provedor de dados: 115
Autores: Cobos-Peralta,Mario A.; Mata-Espinosa,Miguel A.; Pérez-Sato,Marcos; Hernández-Sánchez,David; Ferrera-Cerrato,Ronald.
Los métodos usados para reciclar envases de polietilentereftalato (PET) son insuficientes y han causado un problema serio de contaminación ambiental en varios países. Una alternativa para reciclar estos envases es incluirlos como fuente de fibra o material inerte en dietas para rumiantes. Con el objetivo de probar esta alternativa se alimentaron 30 borregos (peso vivo promedio de 23.4 kg; 10 por tratamiento) con dietas sin (T1=PET-0) y con 100 (T2=PET-100) y 200 g (T3=PET-200) de envases de PET triturados kg-1 MS en sustitución de rastrojo de maíz. Las dietas se formularon para cubrir los requerimientos nutritivos de borregos en crecimiento con una ganancia promedio de peso de 200 g d -1. Las variables consumo de alimento, ganancia de peso y conversión...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterias ruminales; Envases de plástico; Reciclaje de PET; PET.
Ano: 2011
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952011000100004

Restrain of birds with bottles of polyethylene terephthalate, tested in red-browed from the Atlantic Forest
Provedor de dados: 45
Autores: Bianchi,M.A.F.; Mello,R.H.; Bianchi,H.; Bermond Júnior,J.L.; Ibrahim,P.A.F.
In wild animals, containment is the moment of greatest stress caused by the investigator to the animal due to its natural resistance to the moment of capture, handling, containment and transport, attitudes frankly contrary to his nature. In birds, the restraint must meet certain criteria in order to control the animal's movements, avoiding trauma at the same time that you need to keep your breathing amplitude. The high risk of death during the restraint of these animals raised the need to design a device, from bottles of poly ethylene terephthalate (PET), for containing parrots-browed Amazon (Amazona rhodocorytha), a parrot endemic to the Atlantic Forest in southeastern Brazil, and endangered with extinction, which allowed the observation of respiration,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wild birds; Physical restraint; Stress control; PET; Recycling.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100136

Radionuclide imaging of infection: what the future holds
Provedor de dados: 52
Autores: Palestro,Christopher J.
Nuclear Medicine plays an important role in the evaluation of patients suspected of harboring infection. Gallium imaging is especially useful for opportunistic infections and spinal osteomyelitis. In vitro labeled leukocyte imaging is the current radionuclide gold standard for imaging most infections, in immunocompetent patients, including cardiovascular, postoperative, and musculoskeletal infections (except spinal osteomyelitis). Several in-vivo leukocyte labeling methods have been investigated, but none are widely used. Results obtained with radiolabeled antibiotics have been disappointing. Data on FDG are still emerging, but this agent appears to be especially valuable in fever of unknown origin, spinal osteomyelitis, vasculitis and sarcoidosis. It is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infection; Labeled leukocytes; Gallium; FDG; PET.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700002

Nuclear medicine procedures for the evaluation of male sexual organs: a brief review
Provedor de dados: 52
Autores: Bernardo-Filho,Mario; Santos-Filho,Sebastião David; Fonseca,Adenilson de Souza da; Carter,Kevin; Missailidis,Sotiris.
Sexuality consists of three aspects that are interrelated and inseparable, biological, physiological and social. The biological aspect considers the individual's capability to give and to receive pleasure. In consequence, it covers the functionality of the sexual organs and the physiology of human sexual response cycle. Diagnostic imaging modalities, such as single photon emission computed tomography (SPECT) and positron emission tomography (PET) have been used to evaluate clinical disorders of the male reproductive system. PET and SPECT procedures basically involve the administration of a radiopharmaceutical that has a higher uptake in a specific tumor or tissue. The aim of this brief review is to present some radiopharmaceuticals that have been used in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Male sexual organs; PET; SPECT; Radiopharmaceutical; Sexuality.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700004

The clinical impact of [18F]-FDG Pet during the opening year of a Pet centre
Provedor de dados: 52
Autores: Talbot,Jean-Noël.
We have evaluated the clinical impact of FDG-PET on patient staging and management during the opening year of our PET centre in France. A questionnaire, translation in French of the questionnaire used recently in California, was sent to the referring physician of each of the 476 patients who had at least one routine FDG-PET examination during the year 2000. Of 348 responses (response rate = 73%), the disease was upstaged in 26% of the cases and downstaged in 9%. Inter-modality management changes (change from a scheduled therapeutic modality for a different one) were reported in 37% of the cases and intra-modality changes in 9%. Those modification rates were respectively 38% and 7% in recurrence of colorectal cancer (153 patients), 47% and 7% in lung cancer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PET; [18F]-FDG; Clinical impact; Cancer.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000500009

Applications of nucleoside-based molecular probes for the in vivo assessment of tumour biochemistry using positron emission tomography (PET)
Provedor de dados: 52
Autores: Wiebe,Leonard I.
Positron emission tomography (PET) is a non-invasive nuclear imaging technique. In PET, radiolabelled molecules decay by positron emission. The gamma rays resulting from positron annihilation are detected in coincidence and mapped to produce three dimensional images of radiotracer distribution in the body. Molecular imaging with PET refers to the use of positron-emitting biomolecules that are highly specific substrates for target enzymes, transport proteins or receptor proteins. Molecular imaging with PET produces spatial and temporal maps of the target-related processes. Molecular imaging is an important analytical tool in diagnostic medical imaging, therapy monitoring and the development of new drugs. Molecular imaging has its roots in molecular biology....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular biology; Molecular imaging; PET; Nucleosides; Nucleotides; Nucleic acids; Oligonucleotides; Antisense; Aptamer; Spiegelmer.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300011

FDOPA-(18F): a PET radiopharmaceutical recently registered for diagnostic use in countries of the European Union
Provedor de dados: 52
Autores: Chevalme,Yanna-Marina; Montravers,Françoise; Vuillez,Jean-Philippe; Zanca,Michel; Fallais,Charles; Oustrin,Jean; Talbot,Jean-Noël.
Positron emission tomography (PET) and its recent update PET/CT are very effective diagnostic tools for non-invasive imaging of metabolic or functional disorders in target tissues. The clinical usefulness of fluorodeoxyglucose-(18F) (FDG) has been now widely accepted. Recently, the clinical usefulness of fluoroDOPA-(18F) or FDOPA, an aminoacid labelled with the same positron emitter fluorine-18, has been evaluated and recognised in France and subsequently in several EU countries. FDOPA is diagnostic PET agent, which has been used for decades in imaging the loss of dopaminergic neurons in Parkinson's disease, and more recently to detect, stage and restage neuroendocrine tumours and to search for recurrence of viable glioma tissue. The present article...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Registration of radiopharmaceuticals; PET; FDOPA; Parkinson's disease; Cancer.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000600009

Dose absorbed by technologists in positron emission tomography procedures with FDG
Provedor de dados: 52
Autores: Amaral,Ademir; Itié,Christian; Bok,Bernard.
The objective of this work was to evaluate radiation doses delivered to technologists engaged in different tasks involving positron emission tomography (PET) studies with FDG (fluorodeoxyglucose). This investigation was performed in two French nuclear medicine departments, which presented significant differences in their arrangements and radiation safety conditions. Both centers administered about 300 MBq per PET/CT study, although only one of them is a dedicated clinical PET center. Dose equivalent Hp(10) and skin dose Hp(0.07) were measured using Siemens electronic personnel dosimeters. For assessment dose absorbed by hands during drawing up of tracer and injection into the patient, a Polimaster wristwatch gamma dosimeter was employed. Absorbed dose and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electronic Dosimeters; Radioprotection; Technologists; PET.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000600016

Clinical application of pet
Provedor de dados: 52
Autores: Lomeña,Francisco; Soler,Marina.
Positron emission tomography (PET) is an imaging modality that gives information on tissue metabolism and functionalism, different from other imaging techniques like computed tomography (CT) and magnetic resonance imaging (MRI), which provide anatomical or structural information. PET has reached its development in biomedical research because of its capacity to use analogous compounds of many endogenous substance as tracers, and to measure, in vivo and in a non-invasive way, their consumption by the different organs and tissues of the mammalian body. Fluordeoxyglucose-F18 (FDG) PET has been proven to be a tracer adequate for clinical use in oncology and in many neurological diseases, with an excellent cost-efficiency ratio. The current PET-CT scanners can...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PET; Fluordeoxyglucose-F18 (FDG); Cancer; PET/CT.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000700027