Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 10.925
Primeira ... 34567891011 ... Última
Imagem não selecionada

Imprime registro no formato completo
A quantitative PCR approach for determining the ribosomal DNA copy number in the genome of Agave tequila Weber Electron. J. Biotechnol.
Rubio-Piña,Jorge; Quiroz-Moreno,Adriana; Sánchez-Teyer,L. Felipe.
Background: Agave tequilana has a great economic importance in Mexico in order to produce alcoholic beverages and bioenergy. However, in this species the structure and organization of the rDNAs in the genome are limited, and it represents an obstacle both in their genetic research and improvement as well. rDNA copy number variations per eukaryotic genome have been considered as a source of genetic rearrangements. In this study, the copy number of 18S and 5S rDNAs in the A. tequilana genome was estimated, and an absolute quantitative qPCR assay and genome size was used. In addition, an association between the rDNAs copy number and physical mapping was performed to confirm our results. Results: The analysis were successfully applied to determine copy number...
Tipo: Journal article Palavras-chave: Agave tequilana; Copy number; Fluorescent in situ hybridization; Ribosomal DNA; Quantitative PCR.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000400002
Imagem não selecionada

Imprime registro no formato completo
A radiographic method to estimate lung volume and its use in small mammals Biol. Res.
CANALS,MAURICIO; OLIVARES,RICARDO; ROSENMANN,Mario.
In this paper we develop a method to estimate lung volume using chest x-rays of small mammals. We applied this method to assess the lung volume of several rodents. We showed that a good estimator of the lung volume is: V*L = 0.496 · V RX ≈ 1/2·V RX , where V RX is a measurement obtained from the x-ray that represents the volume of a rectangular box containing the lungs and mediastinum organs. The proposed formula may be interpreted as the volume of an ellipsoid formed by both lungs joined at their bases. When that relationship was used to estimate lung volume, values similar to those expected from allometric relationship were found in four rodents. In two others, M. musculus and R. norvegicus, lung volume was similar to reported data, although...
Tipo: Journal article Palavras-chave: Lung volume; X-ray; Method; Rodents.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000100006
Imagem não selecionada

Imprime registro no formato completo
A Radiological Investigation on the Hand Development in Human Fetuses Throughout the Fetal Period and an Evaluation Performed in Terms of its Clinical Importance Hand Development International Journal of Morphology
Raziye,Desdicioglu; Ceren,Uguz; Kadir,Desdicioglu; Osman,Sulak; Mehmed Ali,Malas.
It was aimed in this study that the morphometric development of the hand in human fetuses throughout the fetal period be radiologically investigated and the clinical importance of this period be evaluated. A total of 50 fetuses with no external pathology or anomaly, and the ages of which varied between 20-40 gestational weeks were incorporated into the study. The fetuses were separated into groups according to gestational weeks, trimesters and months. After the general external measurements of the fetuses were performed, mammography and hand radiographies of the fetuses were shot in the way that their hands would be in a pronational position. Afterwards, the morphometric measurements of the hands were performed with the help of a digital caliper through...
Tipo: Journal article Palavras-chave: Fetus; Hand; Fetal development; Morphometry; Radiology.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000400057
Imagem não selecionada

Imprime registro no formato completo
A Rainfall Simulator for the in situ Study of Superficial Runoff and Soil Erosion Chilean J. Agric. Res.
Sangüesa,Claudia; Arumí,José; Pizarro,Roberto; Link,Oscar.
A rainfall simulator is an important tool for the study of runoff generation and soil loss because it can be used either under laboratory conditions, or in disturbed or natural soil. The objective of this study was to describe the design and operation of a rainfall simulator to evaluate soil loss in situ. The rainfall simulator has four full-cone spray nozzles with a Unijet system mounted in a straight line pipe configuration, and easily transported and assembled. Simulated rainfall uniformity was evaluated in the laboratory, whereas the applicability of the simulator in natural soil erosion plot conditions in an experimental field with different slopes was tested by quantifying runoff and evaluating soil erosion. Twenty simulations were carried out in the...
Tipo: Journal article Palavras-chave: Soil erosion; Superficial runoff; Erosion plot; Uniformity of rain.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100019
Imagem não selecionada

Imprime registro no formato completo
A raíz del Año Internacional de la Diversidad Biológica Gayana
D'Elía,Guillermo.
Tipo: Journal article
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382010000100002
Imagem não selecionada

Imprime registro no formato completo
A rapid and cheap protocol for preparation of PCR templates in peanut Electron. J. Biotechnol.
Wang,Chuan Tang; Wang,Xiu Zhen; Tang,Yue Yi; Zhang,Jian Cheng; Yu,Shan Lin; Xu,Jian Zhi; Bao,Zhen Min.
This paper describes a simple, low cost and reliable DNA template preparation protocol for polymerase chain reaction (PCR) using immature leaves from peanut seeds or leaves from field-grown plants. The technique may find wide utility in studies involving PCR-based molecular markers, rapid screening for transformants and gene cloning.
Tipo: Journal article Palavras-chave: DNA extraction; Groundnut; PCR; Peanut.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200009
Imagem não selecionada

Imprime registro no formato completo
A Rapid and Efficient Method for Purifying High Quality Total RNA from Peaches (Prunus persica) for Functional Genomics Analyses Biol. Res.
MEISEL,LEE; FONSECA,BEATRIZ; GONZÁLEZ,SUSANA; BAEZA-YATES,RICARDO; CAMBIAZO,VERONICA; CAMPOS,REINALDO; GONZALEZ,MAURICIO; ORELLANA,ARIEL; RETAMALES,JULIO; SILVA,HERMAN.
Prunus persica has been proposed as a genomic model for deciduous trees and the Rosaceae family. Optimized protocols for RNA isolation are necessary to further advance studies in this model species such that functional genomics analyses may be performed. Here we present an optimized protocol to rapidly and efficiently purify high quality total RNA from peach fruits (Prunus persica). Isolating high-quality RNA from fruit tissue is often difficult due to large quantities of polysaccharides and polyphenolic compounds that accumulate in this tissue and co-purify with the RNA. Here we demonstrate that a modified version of the method used to isolate RNA from pine trees and the woody plant Cinnamomun tenuipilum is ideal for isolating high quality RNA from the...
Tipo: Journal article Palavras-chave: CDNA library; Fruit; Fruit trees; Functional genomics; Peach; Polysaccharides; Prunus persica; RNA isolation; Rosaceae; RT-PCR.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000100010
Imagem não selecionada

Imprime registro no formato completo
A rapid method for an offline glycerol determination during microbial fermentation Electron. J. Biotechnol.
Kuhn,Jennifer; Müller,Hagen; Salzig,Denise; Czermak,Peter.
Background The purpose of this work was to find a rapid method for glycerol detection during microbial fermentations. The method requirements were, first, to avoid sample pretreatment, and second, to measure glycerol precisely especially out of fermentation broth. Results This was achieved by combining two reaction principles - the Malaprade reaction and the Hantzsch reaction. In the Malaprade reaction, glycerol is converted into formaldehyde. This forms a dye in the Hantzsch reaction after which adsorption is than detected. The subsequent assay was investigated with two different fermentation media, a chemically undefined and a chemically defined media, used for Pichia pastoris fermentation. In both media, as well as in real fermentation samples, glycerol...
Tipo: Journal article Palavras-chave: Glycerol determination; Fermentation broth; Hantzsch reaction; Malaprade reaction.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000300017
Imagem não selecionada

Imprime registro no formato completo
A rare but successful reproductive tactic in a social wasp (Hymenoptera:Vespidae): Use of heterospecific nests RChHN
DE SOUZA,ANDRÉ R.; SILVA,NEWTON J. J.; PREZOTO,FÁBIO.
Successful heterospecific use of abandoned nests has been reported in birds. Although the same behavior has been observed in wasps, the success of such tactic has not been demonstrated. We described two cases in which the social wasp Polistes versicolor successfully reared its brood in empty nests of the social wasps Mischocyttarus drewseni and Mischocyttarus cassununga (Hymenoptera: Vespidae). We showed that this is a rare but a viable reproductive tactic for both solitary and associative foundress. Unlike birds, which use heterspecific nests very similar to their own, wasps are able to use heterspecific nests that do differ from their own.
Tipo: Journal article Palavras-chave: Mischocyttarus cassununga; Mischocyttarus drewseni; Polistes versicolor.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000300010
Imagem não selecionada

Imprime registro no formato completo
A Rare Case of Unilateral Third Head of Sternocleidomastoid Muscle International Journal of Morphology
Cherian,Saju Binu; Nayak,Satheesha.
A rare case of unilateral third head of sternocleidomastoid muscle was noted during routine dissections for undergraduate medical students. The additional third head originated from the middle third of the clavicle and joined the normal two heads (sternal and clavicular) of the muscle in the middle of the neck. The insertion and nerve supply of the muscle was normal. This case may be important for head and neck surgeons and for plastic surgeons doing muscle graft surgeries.
Tipo: Journal article Palavras-chave: Sternocleidomastoid muscle; Anatomical variation; Neck muscle.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000100017
Imagem não selecionada

Imprime registro no formato completo
A Rare Lymphatico-Venous Communication Associated with Duplication of Thoracic Duct International Journal of Morphology
Anu,Vinod Ranade; Rajalakshmi,Rai; Latha,Venkatraya Prabhu; Mangala,Kumaran.
An unusual presentation of the duplication of thoracic duct with a rare lymphatico- venous communication was found during the routine dissection for undergraduate students. The thoracic duct duplicated at the level of T12 vertebra. Normally thoracic duct opens into the junction of left internal jugular vein and subclavian vein. On the right side of the neck, the right lymphatic duct conveys the lymph from the head and neck, the upper extremity and the right side of the thorax to the right innominate vein. Here, the duplicated thoracic duct on the left side opened directly into the inferior vena cava. The above case is discussed with regard to its development, incidence, and clinical significance
Tipo: Journal article Palavras-chave: Thoracic duct; Inferior vena cava; Lymphatico-venous communications; Cisterna chyli; Lymphatic duct.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000300005
Imagem não selecionada

Imprime registro no formato completo
A Rare Pattern of Brachial Artery Variation: Case Report International Journal of Morphology
Jacomo,A. L; Martinez,C. A. R; Saleh,S. O; Andrade,M; Akamatsu,F. E..
Unlike the venous system, variations in arterial anatomy are less frequent and most of them affect visceral arteries. In limbs, variations of the brachial artery are the most reported and at least six different patterns have been described so far. The commonest is the superficial brachial artery which lies superficially to the median nerve. Much less prevalent are the high origin of the radial artery (brachioradial artery) or the existence of a doubled brachial artery (accessory brachial artery). We present a previously undescribed pattern of brachial artery variation. During dissection of the right upper limb of a 60 year-old male embalmed cadaver, we found the bifurcation of the brachial artery in the proximal portion of the middle third of the arm. Its...
Tipo: Journal article Palavras-chave: Artery; Brachial; Variation; Anatomy.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200027
Imagem não selecionada

Imprime registro no formato completo
A Rare Termination of Left Common Facial Vein into Left Subclavian Vein: A Case Report International Journal of Morphology
Prakash,Babu B; Bhagath,Kumar Potu.
During routine dissection of head and neck, an unusual drainage in pattern of the veins on the left side of the face was observed in an adult male cadaver. In the present case, he superficial temporal vein united with maxillary vein to form retromandibular vein within the substance of the left parotid gland. The anterior division of retromandibular vein joined with facial vein to form common facial vein that drained into left subclavian vein directly. Knowledge of such variations is important for surgeons performing head and neck surgeries. Facial veins are often grafted into carotid endarterectomy
Tipo: Journal article Palavras-chave: Facial vein; Retromandibular vein; Anatomical Variation; Carotid endarterectomy.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300013
Imagem não selecionada

Imprime registro no formato completo
A Rare Variation of the Retro-Aortic Left Renal Vein with Anastomotic Afluent from Inferior Mesenteric Vein International Journal of Morphology
Andrade,F. M.; Rocha,R. P.; Pereira,H. M.; Fernandes,R. M. P.; Babinski,M. A..
We report an uncommon anatomical variations of the left renal vein was found on dissected specimen in an elderly male cadaver: a retroaortic left renal vein. No other vascular anomalies were noted in this specimen. The anomaly result may be related to a particular pattern of left inferior vena cava. The abnormality have to be known for it may be undetected or be misleading in imaging. This anatomical curiosity should be kept in mind by clinicians and academics that may manipulate this anatomical area
Tipo: Journal article Palavras-chave: Anatomy; Anomalies; Kidney; Retroaortic renal vein.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022005000100001
Imagem não selecionada

Imprime registro no formato completo
A Rare Variation of the Testicular Blood Supply by the Deferential Artery International Journal of Morphology
Zheng,Yong; Yuan,Qianqian; He,Xin; Lei,Yueshan.
Any compression of testicular arteries may lead to loss of spermatogenesis and gonadal hormone production, existence of the variational arteries is accountable in cases of vasoligation, orchidopexy and other surgical approach on them. Anomalies of the testicular blood arteries were observed during dissection of the pelvic cavity in a 68-year-old male cadaver. This report describes a very rare case of lack of testicular arteries. For the blood supply to the testis, thick deferential arteries form some vascular winding and loops and course accompanied by deferent duct to the testis. This case report would serve as ray of light for knowledge of the possible variations of the testicular arteries during surgical procedures.
Tipo: Journal article Palavras-chave: Deferential artery; Variation; Umbilical artery.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300022
Imagem não selecionada

Imprime registro no formato completo
A real-time PCR genotyping assay to detect FAD2A SNPs in peanuts (Arachis hypogaea L.) Electron. J. Biotechnol.
Barkley,Noelle A; Wang,Ming Li; Pittman,Roy N.
The high oleic (C18:1) phenotype in peanuts has been previously demonstrated to result from a homozygous recessive genotype (ol1ol1ol2ol2) in two homeologous fatty acid desaturase genes (FAD2A and FAD2B) with two key SNPs. These mutant SNPs, specifically G448A in FAD2A and 442insA in FAD2B, significantly limit the normal function of the desaturase enzyme activity which converts oleic acid into linoleic acid by the addition of a second double bond in the hydrocarbon chain. Previously, a genotyping assay was developed to detect wild type and mutant alleles in FAD2B. A real-time PCR assay has now been developed to detect wild type and mutant alleles (G448A) in FAD2A using either seed or leaf tissue. This assay was demonstrated to be applicable for the...
Tipo: Journal article Palavras-chave: Fatty acid composition; Gas chromatography; Peanut (Arachis hypogaea L.); Real-time PCR; SNP genotyping.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100009
Imagem não selecionada

Imprime registro no formato completo
A reassessment of the phytogeographic characterization of Temperate Pacific South America RChHN
SANTELICES,BERNABE; MENESES,ISABEL.
In 1980, a study of geographic distribution patterns and geographic affinities of benthic algae of temperate Pacific South America (5-55 ºS) provided a first characterization of these coasts. High endemism and limited floristic exchange with the Tropical Pacific and with islands in the South Pacific at various distances from the continent were two outstanding features of the marine flora. A partial blockage of species exchange partially accounted for a peculiar latitudinal pattern of species richness that increases with increasing latitudes. In contrast, there was reduced species richness in comparison with other climatically equivalent regions that have contact with more effective routes of migration. Over the last two decades, more than 30 taxonomic and...
Tipo: Journal article Palavras-chave: Benthic phytogeography; Isolation; Latitudinal patterns; Seaweeds; Temperate South America.
Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400005
Imagem não selecionada

Imprime registro no formato completo
A Research of Peripheral Blood Cells Annually in Bufo Bufo gargarizans International Journal of Morphology
Liu,Chongbin; Xia,Chengqiang; Xie,Zhaohui; Jiao,Yang; She,Qiusheng.
The present paper deals with a histological study of the blood cells of Bufo Bufo gargarizans in different months: January, March, May, July and October. The methods used are by routine blood smear in Wright stain and observation in vivo. We found that in smears and in vivo two main types of cells of the red cells: mitotic as well as amitotic. While amitotic occurs all the year round, particularly in July, mitosis so far had been seen only in July. It is also found that there are plenty of neutrophils in the blood cells of Bufo Bufo gargarizans, furthermore, the nuclei of these cells are polymorphic, especially in January and March. Meanwhile, the concentration of red cells was lowest in May and highest in January; The concentration of white blood cells...
Tipo: Journal article Palavras-chave: Bufo Bufo gargarizans; Blood cells; Annual changes.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400022
Imagem não selecionada

Imprime registro no formato completo
A review of the chemistries of redox sensitive elements within suboxic zones of oxygen minimun regions Gayana
Kenneth W,Bruland.
This presentation is a review of the chemistries of redox sensitive elements within suboxic regions of extreme oxygen minimum zones. Suboxic regions are defined as extreme oxygen minimum zones with dissolved oxygen < 10 µmol kg-1 (and likely <5 µmol kg-1), and with clear evidence of nitrate reduction, but not sulfate reduction. These are regions with nitrate deficits > 10 µmol kg-1 or N* values of _10 µmol kg-1. Suboxic regions predictably occur in the tropical and subtropical eastern Pacific and the Arabian Sea. These suboxic zones are important in the global biogeochemistry of nitrogen and act as an important sink for fixed nitrogen. Minor and trace element redox couples such as iodate/iodide and leachable particulate Mn/dissolved Mn undergo...
Tipo: Journal article Palavras-chave: Nitrate; Iodine; Manganese; Iron.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000300003
Imagem não selecionada

Imprime registro no formato completo
A review on plant importance, biotechnological aspects, and cultivation challenges of jojoba plant Biol. Res.
Al-Obaidi,Jameel R.; Halabi,Mohammed Farouq; AlKhalifah,Nasser S.; Asanar,Shanavaskhan; Al-Soqeer,Abdulrahman A.; Attia,M. F..
Abstract Jojoba is considered a promising oil crop and is cultivated for diverse purposes in many countries. The jojoba seed produces unique high-quality oil with a wide range of applications such as medical and industrial-related products. The plant also has potential value in combatting desertification and land degradation in dry and semi-dry areas. Although the plant is known for its high-temperature and high-salinity tolerance growth ability, issues such as its male-biased ratio, relatively late flowering and seed production time hamper the cultivation of this plant. The development of efficient biotechnological platforms for better cultivation and an improved production cycle is a necessity for farmers cultivating the plant. In the last 20 years, many...
Tipo: Journal article Palavras-chave: Simmondsia chinensis; Oil crop; Combat desertification; Desert plants.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100503
Registros recuperados: 10.925
Primeira ... 34567891011 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional