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Ultrasonographic aspects and biometry of Striped owl`s eyes (Rhinoptynx clamator)

SQUARZONI, Renata; PERLMANN, Eduardo; ANTUNES, Andrea; MILANELO, Liliane; BARROS, Paulo Sergio de Moraes
Fonte: WILEY-BLACKWELL Publicador: WILEY-BLACKWELL
Tipo: Artigo de Revista Científica
ENG
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Objective To report the biometric values and ultrasonographic aspects of the normal eye of the Striped owl (Rhinoptynx clamator). Sample population Twenty-seven healthy, free-living, adult Striped owls from the Ecological Park of Tiete Veterinary Ambulatory (Sao Paulo, Brazil). Procedures Both eyes of all owls underwent B-mode ultrasonographic examination and biometry was performed for lens axial length (WL), depth of the anterior (AC) and vitreous (VC) chambers, axial length of the globe (LB) and the pecten oculi (LP) of both eyes, using a 12 MHz probe. The owls were manually restrained without sedation and the eyes were topically anesthetized. Results Biometric and statistical findings were as follows: in the left eye, the means and standard deviations were: LB = 23.76 +/- 0.92 mm, WL = 7.79 +/- 0.27 mm, AC = 4.27 +/- 0.47 mm, VC = 11.36 +/- 0.29 mm and LP = 5.69 +/- 0.50 mm; in the right eye, the values were: LB = 24.25 +/- 0.79 mm, WL = 8.03 +/- 0.40 mm, AC = 4.56 +/- 0.52 mm, VC = 11.40 +/- 0.25 mm, and LP = 5.68 +/- 0.41 mm. No significant differences were found between left and right eyes measurements of LB, WL, AC, VC, and LP dimensions. Conclusions Ocular ultrasound aspects and biometric values of the Striped owl are reported. The study`s results provide means for various ocular measurements. The ultrasound is an easy and safe exam to be performed in the Striped owl`s eyes.; FAPESP Sao Paulo Research Foundation[2005/00698-1]

Longitudinal reference ranges for fetal ultrasound biometry in twin pregnancies

Liao, Adolfo Wenjaw; Brizot, Maria de Lourdes; Kang, Helenice Julio; Assunção, Renata Almeida de; Zugaib, Marcelo
Fonte: HOSPITAL CLINICAS, UNIV SAO PAULO; SÃO PAULO Publicador: HOSPITAL CLINICAS, UNIV SAO PAULO; SÃO PAULO
Tipo: Artigo de Revista Científica
ENG
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OBJECTIVE: The purpose of this study was to establish longitudinal reference ranges for fetal ultrasound biometry measurements and growth parameters in twin pregnancies. METHOD: A total of 200 uncomplicated twin pregnancies before 21 weeks of gestation were recruited for this prospective, longitudinal study. Women who abandoned follow-up, pregnancies with unknown outcomes or pregnancies with complications were excluded. Ultrasound scans were performed every three weeks, and biparietal and occipitofrontal diameters, head and abdominal circumferences, and femur diaphysis length measurements were obtained for each fetus at each visit. Estimated fetal weight, biparietal/occipitofrontal diameter, head circumference/abdominal circumference, and femur diaphysis length/abdominal circumference ratios were also calculated. Multilevel regression analysis was performed on normalized data. RESULTS: A total of 807 ultrasound examinations were performed in 125 twin pregnancies between 14 and 38 weeks of gestation (6.5 +/- 1.4 scans/pregnancy). Regression analysis demonstrated significant correlations for all variables with gestational age, namely log of the biparietal diameter (r = 0.98), log of the occipitofrontal diameter (r = 0.98), log of the head circumference (r = 0.99)...

Biometria ocular e sua relação com sexo, idade, tamanho e peso em cães da raça Cavalier King Charles Spaniel; Ocular biometry and its relation with gender, age, size, weight and dimensionsof the head in Cavalier king Charles Spaniels

Squarzoni, Renata
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 09/02/2011 PT
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O crescimento e as dimensões das estruturas oculares em cães de diversas raças têm sido objeto de estudo. Sabe-se que quanto mais longilíneo o crânio, maior o comprimento axial do bulbo ocular. O objetivo deste trabalho foi acompanhar o desenvolvimento das dimensões dos componentes oculares (comprimento axial, espessura da lente, profundidade da câmara anterior e da câmara vítrea) e relacionar as medidas com o sexo, a idade, tamanho, medidas do crânio e peso de cães da raça Cavalier King Charles Spaniel, uma raça braquicéfala. Foram realizadas 117 medidas biométricas oculares em cães variando entre 15 dias e 36 meses de idade, não sedados, sentados ou deitados em posição esternal, utilizando-se ultrassonografia modo-B com transdutor microconvexo de 8 MHz. No momento de cada medida ocular os cães foram pesados e as medidas de comprimento, altura, distâncias fronto-occipital, fronto-nasal, bizigomática e circunferência do crânio foram registradas. As estruturas oculares mostraram uma curva de rápido crescimento entre 15 dias e 4 meses de idade e uma curva suave de crescimento até os 12 meses, idade em que cessou o crescimento do cão (altura e comprimento). Os machos apresentaram medidas maiores de altura, comprimento e crânio do que fêmeas...

B-mode ultrasonography biometry of the Amazon Parrot (Amazona aestiva) eye

Lehmkuhl, Ricardo C.; Almeida, Mariana F.; Mamprim, Maria J.; Vulcano, Luiz C.
Fonte: Wiley-Blackwell Publicador: Wiley-Blackwell
Tipo: Artigo de Revista Científica Formato: 26-28
ENG
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PurposeUltrasonographic evaluation of the eye is a relatively recent addition to routine ophthalmic diagnostics in small animal ophthalmology. Some parameters for ophthalmic biometry have been established. There are few studies in clinical avian ophthalmology that describe ultrasound images of eye in some nocturnal avian species and in other birds that do not belong to the Brazilian fauna, but the psittacine family is not represented. The purpose of this study was to describe the following measurements: the distances between cornea and anterior lens capsule (D1) between the anterior and posterior lens capsule (D2), between posterior lens capsule and optic papilla (D3) and the axial length.MethodSixty four transpalpebral ocular ultrasound examinations were performed on 32 Blue fronted Amazon parrots (Amazona aestiva) with no history of previous ophthalmic disease.Result and DiscussionThe measurements were taken in sagital planes using a 10 MHz linear probe without a standoff pad. The mean values for the left eye were; D1 0.17 +/- 0.03 cm, D2 0.35 +/- 0.02 cm, D3 0.73 +/- 0.04 cm and the axial length 1.26 +/- 0.06 cm. In the right eye D1 0.17 +/- 0.02 cm, D2 0.34 +/- 0.02 cm, D3 0.74 +/- 0.03 cm and the axial length 1.25 +/- 0.05 cm. No significant statistical difference was observed among the birds or between the left and right eye. The description of these parameters will allow the veterinary practitioner to evaluate the structural changes that specific diseases may cause in these animals.

Blood and seminal plasma concentrations of selenium, zinc and testosterone and their relationship to sperm quality and testicular biometry in domestic cats

Villaverde, Ana Izabel S. B.; Fioratti, Eduardo G.; Ramos, Renata S.; Neves, Renato C. F.; Ferreira, Joao Carlos P.; Cardoso, Guilherme S.; Padilha, Pedro M.; Lopes, Maria Denise
Fonte: Elsevier B.V. Publicador: Elsevier B.V.
Tipo: Artigo de Revista Científica Formato: 50-55
ENG
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Processo FAPESP: 06/59910-2; Processo FAPESP: 07/53299-2; The aim of this study was to assess seminal plasma (SP) and serum concentrations of zinc (Zn), selenium (Se) and testosterone (T) in domestic cats and determine whether these are related to sperm quality and testicular biometry. Six tomcats were collected using an artificial vagina and sperm analysis included motility by CASA, morphology, plasma membrane integrity, and sperm count. Serum and SP were submitted to total T concentration determination using a solid-phase radioimmunoassay technique while Zn and Se were measured by atomic absorption spectroscopy. Serum T concentrations were greater compared to SP concentrations, but both values were significantly correlated. Se concentrations were higher in serum, whereas SP had greater Zn values. Concentrations of Se, Zn and T were not correlated with each other either in serum or SP. Negative correlations were detected between Se concentrations in SP and total sperm head defects, and between Se concentrations in serum and VAP, VSL, SIR, and LIN. Serum concentrations of Zn were negatively correlated with total abnormal sperm and midpiece defects and positively related to progressive motility. Both serum and SP concentrations of T had no relationship with sperm quality. Concentrations of Se exhibited a negative correlation with total testicular weight...

Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpfug tomography and ultrasound

Jorge, Jorge; Rosado, J. L.; Diaz-Rey, José Alberto; González-Méijome, José Manuel
Fonte: Dove Medical Press Publicador: Dove Medical Press
Tipo: Artigo de Revista Científica
Publicado em //2013 POR
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Background: The purpose of this study was to compare the accuracy of the new Sirius® Scheimpflug anterior segment examination device for measurement of central corneal thickness (CCT) and anterior chamber depth (ACD) with that of CCT measurements obtained by ultrasound pachymetry and ACD measurements obtained by ultrasound biometry, respectively. Methods: CCT and ACD was measured in 50 right eyes from 50 healthy subjects using a Sirius Scheimpflug camera, SP100 ultrasound pachymetry, and US800 ultrasound biometry. Results: CCT measured with the Sirius was 546 ± 39 μm and 541 ± 35 μm with SP100 ultrasound pachymetry (P = 0.003). The difference was statistically significant (mean difference 4.68 ± 10.5 μm; limits of agreement −15.8 to 25.20 μm). ACD measured with the Sirius was 2.96 ± 0.3 mm compared with 3.36 ± 0.29 mm using US800 ultrasound biometry (P , 0.001). The difference was statistically significant (mean difference -0.40 ± 0.16 mm; limits of agreement -0.72 to 0.07 mm). When the ACD values obtained using ultrasound biometry were corrected according to the values for CCT measured by ultrasound, the agreement increased significantly between both technologies for ACD measurements (mean difference 0.15 ± 0.16 mm; limits of agreement -0.16 to 0.45 mm). Conclusion: CCT and ACD measured by Sirius and ultrasound methods showing good agreement between repeated measurements obtained in the same subjects (repeatability) with either instrument. However...

Refractive results of cataract surgery using optical biometry and Haigis formula in eyes with refractive keratotomy

Caballero,Juan Carlos Sánchez; Centurion,Virgilio
Fonte: Sociedade Brasileira de Oftalmologia Publicador: Sociedade Brasileira de Oftalmologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2013 EN
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OBJECTIVE: To analyze refractive results in postoperative cataract surgery in eyes previously submitted to keratotomy using Haigis formula and data provided by IOL Master®optical biometer. METHODS: The measurements for IOL calculation were obtained through optical biometry by partial coherence interferometry (IOL Master®- Zeiss, 5.4 and 5.5 version) that provides us with the axial length, the central keratometry of 2.5mm, white-to-white diameter and anterior chamber anatomical depth. The formula chosen was Haigis. The surgical technique applied was with the scleral incision at 1.5 mm from the limbus, with scleral-corneal tunnel of 2.2 mm wide, phacoemulsification using INFINITI Ozil®- Alcon and implantation of hydrophobic acrylic aspheric intraocular lens - SN60WF®- Alcon. RESULTS: We studied 20 eyes submitted to keratotomy in the past and currently with cataract with indication for cataract surgerywith intraocular lens implantation using phacoemulsification. Postoperative spherical equivalent was plano in 40% of the eyes and lower than -1.00 in 85% of the eyes. CONCLUSION: The optical biometry by partial coherence interferometry associated with Haigis formula is a valid alternative in IOL calculation for eyes submitted to keratotomy. The refractive results are highly predictable and reproducible.

Goat scrotal-testicular biometry: Influence of the season on scrotal bipartition

Machado Júnior,Antonio A.N.; Assis Neto,Antonio C.; Ambrósio,Carlos E.; Leiser,Rudolf; Lima,Gustavo S.; Oliveira,Leonardo S.; Carvalho,Maria A.M.
Fonte: Colégio Brasileiro de Patologia Animal - CBPA; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Publicador: Colégio Brasileiro de Patologia Animal - CBPA; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2011 EN
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The scrotal-testicular biometry was evaluated in goats raised in Piaui state, Brazil, presenting different levels of scrotal division, in rainy and dry periods of the year. For this study, eighteen male goats at mating age were accomplished and arranged into three groups (6 animals each), obeying the classification as goats with no scrotal bipartition (GI), goats showing scrotal bipartition up to 50% of testicular length (GII), and goats with more than 50% of scrotal bipartition (GIII). The biometry of the scrotal-testicular was made evaluating the scrotal length (SL), scrotal circumference (SC), testicular length (TL) and testicular volume (TV). The results were evaluated following the variance analysis (ANOVA) and the SNK test applied on the average comparisons. The analysis of the data demonstrated high values, in dry and rainy periods, of SC (24.63cm/ 26.97cm), SL (16.61cm/ 18.24cm), TL (5.32cm/ 5.93cm), TV (173.81cm³/ 203.01cm³). This supports the hypothesis of the influence of the period of the year and of the scrotal bipartition on the scrotal-testicular biometry in goat.

Longitudinal reference ranges for fetal ultrasound biometry in twin pregnancies

Liao,Adolfo Wenjaw; Brizot,Maria de Lourdes; Kang,Helenice Júlio; Assunção,Renata Almeida; Zugaib,Marcelo
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2012 EN
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OBJECTIVE: The purpose of this study was to establish longitudinal reference ranges for fetal ultrasound biometry measurements and growth parameters in twin pregnancies. METHOD: A total of 200 uncomplicated twin pregnancies before 21 weeks of gestation were recruited for this prospective, longitudinal study. Women who abandoned follow-up, pregnancies with unknown outcomes or pregnancies with complications were excluded. Ultrasound scans were performed every three weeks, and biparietal and occipitofrontal diameters, head and abdominal circumferences, and femur diaphysis length measurements were obtained for each fetus at each visit. Estimated fetal weight, biparietal/occipitofrontal diameter, head circumference/abdominal circumference, and femur diaphysis length/abdominal circumference ratios were also calculated. Multilevel regression analysis was performed on normalized data. RESULTS: A total of 807 ultrasound examinations were performed in 125 twin pregnancies between 14 and 38 weeks of gestation (6.5±1.4 scans/pregnancy). Regression analysis demonstrated significant correlations for all variables with gestational age, namely log of the biparietal diameter (r = 0.98), log of the occipitofrontal diameter (r = 0.98), log of the head circumference (r = 0.99)...

Association between stature, ocular biometry and refraction in an adult population in rural Myanmar: the Meiktila eye study

Wu, H.; Gupta, A.; Newland, H.; Selva-Nayagam, D.; Aung, T.; Casson, R.
Fonte: Blackwell Publishing Asia Publicador: Blackwell Publishing Asia
Tipo: Artigo de Revista Científica
Publicado em //2007 EN
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Purpose: To study the association between adult stature and ocular biometric parameters and refraction. Methods: In a population-based cross-sectional ophthalmic survey of 2418 adults (≥40 years old) living in the rural villages in central Myanmar, height and weight were measured using a standardized protocol, and body mass index was calculated. Non-cycloplegic refraction and corneal curvature were determined by an autorefractor. Ultrasound pachymetry was performed and ocular biometry, including axial length, anterior chamber depth, lens thickness and vitreous chamber length were measured using A-mode ocular ultrasonography. Results: Height and weight were significantly correlated with age, gender and all the ocular biometric parameters, except lens thickness. After adjusting for age and gender, taller and heavier persons had eyes with longer axial length, deeper anterior and vitreous chambers, and flatter and thicker corneas than shorter persons. Height was not significantly correlated with refraction, and heavier persons tended to be less myopic (P < 0.001). Multivariate linear regression models revealed consistent results with the findings for association between height, weight and ocular biometry and refractive error. Conclusions: Adult stature is independently associated with vitreous chamber length and corneal radius in this Burmese population. Heavier persons were slightly hyperopic.; Hui Min Wu...

Ocular biometry and determinants of refractive error in rural Myanmar: the Meiktila Eye Study

Warrier, S.; Wu, H.; Newland, H.; Muecke, J.; Selva-Nayagam, D.; Aung, T.; Casson, R.
Fonte: British Med Journal Publ Group Publicador: British Med Journal Publ Group
Tipo: Artigo de Revista Científica
Publicado em //2008 EN
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OBJECTIVE: To describe the ocular biometry and determinants of refractive error in an adult population in Myanmar. METHODS: A cross-sectional, population-based survey of the inhabitants 40 years of age and over from villages in the Meiktila District was performed; 2481 eligible participants were identified, and 2076 participated in the study. Biometric components including axial length (AL), anterior chamber depth (ACD), vitreous chamber depth (VCD), lens thickness (LT) and corneal curvature (CC) were measured. Lens opalescence was measured using the Lens Opacity Grading System III. Non-cycloplegic refraction was measured with an autorefractor. RESULTS: Complete biometric, refractive and lenticular data were available on 1498 participants. Men had longer ALs, ACDs, VCDs and steeper CCs than women. There was an increase in LT, nuclear opalescence (NO) and myopic shift with increasing age, with no significant change in AL with age. In the 40-59 year age group, VCD was a significant predictor of refractive error, but LT (p<0.001) and NO (p<0.001) were stronger predictors. In the 60+ age group, NO (p<0.001) was also the dominant predictor of refractive error. CONCLUSION: This Burmese population, particularly women, has a relatively short AL and ACD. NO is the strongest predictor of refractive error across all age groups in this population.; S. Warrier...

Fetal biometry: a comparison between experienced sonographers and automated measurements

Zalud, I.; Good, S.; Carneiro, G.; Georgescu, B.; Aoki, K.; Green, L.; Shahrestani, F.; Okumura, R.
Fonte: Taylor & Francis Ltd Publicador: Taylor & Francis Ltd
Tipo: Artigo de Revista Científica
Publicado em //2009 EN
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Objective. We compared the performance between sonographers and automated fetal biometry measurements (Auto OB) with respect to the following measurements: biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC) and femur length (FL). Methods. The first set of experiments involved assessing the performance of Auto OB relative to the five sonographers, using 240 images for each user. Each sonographer made measurements in 80 images per anatomy. The second set of experiments compared the performance of Auto OB with respect to the data generated by the five sonographers for inter-observer variability (i.e., sonographers and clinicians) using a set of 10 images per anatomy. Results. Auto OB correlated well with manual measurements for BPD, HC, AC and FL (r > 0.98, p < 0.001 for all measurements). The errors produced by Auto OB for BPD is 1.46% (σ = 1.74%), where σ denotes standard deviation), for HC is 1.25% (σ = 1.34%), for AC is 3% (σ = 6.16%) and for FL is 3.52% (σ = 3.72%). In general, these errors represent deviations of less than 3 days for fetuses younger than 30 weeks, and less than 7 days for fetuses between 30 and 40 weeks of age. Conclusion. The measurements produced by Auto OB are comparable to the measurements done by sonographers. Read More: http://informahealthcare.com/doi/abs/10.1080/14767050802415736; Ivica Zalud...

The relationship of birth weight, gestational age, and postmenstrual age with ocular biometry parameters in premature infants

Ozdemir,Ozdemir; Tunay,Zuhal Ozen; Acar,Damla Erginturk; Erol,Muhammet Kazım; Sener,Ender; Acar,Ugur
Fonte: Conselho Brasileiro de Oftalmologia Publicador: Conselho Brasileiro de Oftalmologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2015 EN
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ABSTRACT Purpose: To analyze ocular biometry parameters and evaluate their relationship with gestational age, birth weight, and postmenstrual age in prematurely born infants. Methods: The right eyes of 361 premature infants born before the 36th gestational week were evaluated. Birth weight, gestational week, and gender were recorded. An A-scan Biometer was used for obtaining axial measurements, including anterior chamber depth, lens thickness, vitreous length, and total axial length. Results: Gestational age and birth weight values ranged from 23 to 36 weeks and from 560 to 2,670 g, respectively. The mean gestational age and birth weight were 30.8 ± 2.8 weeks and 1,497.9 ± 483.6 g, respectively. During the first examination (4-5 weeks of postnatal age), birth weight and gestational age of the infants correlated significantly and positively with lens thickness, vitreous length, and axial length (r>0.5, p<0.001), but not with anterior chamber depth (r<0.5). Increased vitreous and axial lengths correlated significantly with increasing postmenstrual age of the infants (r=0.669, p<0.001; r=0.845, p<0.001, respectively). Conclusions: Lens thickness, vitreous length, and axial length, but not anterior chamber depth, were significantly correlated with birth weight and gestational age. All four parameters increased with increasing postmenstrual age...

Comparison of refractive outcomes using immersion ultrasound biometry and IOLMaster biometry

Goggin, M.; Landers, J.
Fonte: Blackwell Publishing Asia Publicador: Blackwell Publishing Asia
Tipo: Artigo de Revista Científica
Publicado em //2009 EN
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Background: The IOLMaster determines axial length using partial coherence interferometry. This study was designed to compare the refractive outcomes of patients who had been measured preoperatively by both immersion ultrasound and IOLMaster biometry. Methods: Patients were recruited from those who had undergone cataract surgery during the preceding 12 months by one surgeon at The Queen Elizabeth Hospital (55 eyes from 55 patients). Each patient underwent measurement of axial length by immersion ultrasound and the IOLMaster. Target refraction was determined using an SRK-T formula and the amount that this differed postoperative refraction was calculated for immersion ultrasound and the IOLMaster. These results were then compared. Results: Eyes measured longer by the IOLMaster method compared with immersion ultrasound (23.37 ± 0.87 vs. 23.25 ± 0.90 mm, t = 4.83; P < 0.0001). However anterior chamber depth was the similar. Postoperatively, final refractive outcome was 0.01 ± 0.63 dioptres (D) more hypermetropic than the target refraction when using the IOLMaster compared with 0.25 ± 0.73 D more myopic when using immersion ultrasound (t = 3.83; P < 0.0001). Seventy-five per cent of patients were within 0.5 D of target refraction and 93% were within 1.0 D when the IOLMaster was used...

Fenología reproductiva y biometría de nidos, huevos y pollos del Ñandú, Rhea americana en Rio Grande do Sul, Brasil; Reproductive Fenology and Biometry of Nests, Eggs and Chicks of the Greater Rhea, Rhea americana in Rio Grande do Sul, Brazil

Codenotti, Taïs Leiroz
Fonte: Aves Argentinas / Asociación Ornitológica del Plata Publicador: Aves Argentinas / Asociación Ornitológica del Plata
Tipo: info:eu-repo/semantics/article; artículo; info:eu-repo/semantics/publishedVersion Formato: application/pdf
Publicado em /11/1997 SPA
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La estación reproductiva del Ñandú ( Rhea americana ) presenta una variación temporal entre los estados del sur y del centro oeste y nordeste de Brasil. Este estudio tuvo como objetivo identificar la fenologia reproductiva de la especie en Rio Grande do Sul, a través del análisis de las diferentes etapas reproductivas. Se ha constatado un retraso de 30 dias aproximadamente, de diferencia en el inicio de la reproducción, con relación a las poblaciones del centro-oeste y nordeste de Brasil. Los machos demuestran preferencia por construir sus nidos en los cultivos de soja. La predación animal y la interferencia humana fueron las principales causas de abandono de los nidos por parte de los machos incubantes. Los factores climatológicos influenciaron grandemente en el éxito de las eclosiones y en la supervivencia de los pichones. Se hizo además, la biometría de nidos, huevos y pollos encontrados.; The reproductive season ofthe Greater Rhea (Rhea americana) occurs at different times at the southern, central-western and northeastern states of Brazil. The start of reproduction in the Greater Rhea at Rio Grande do Sul shows a delay of aproximately 30 days with relation to the populations in Central-east and North-east of Brazil. Males show a preference to build nests in fields of wheat and soybeans. Human and animal predation is the main cause of nest desertion by the incubating male...

Fenología reproductiva y biometría de nidos, huevos y pollos del Ñandú, Rhea americana en Rio Grande do Sul, Brasil; Reproductive Fenology and Biometry of Nests, Eggs and Chicks of the Greater Rhea, Rhea americana in Rio Grande do Sul, Brazil

Codenotti, Taïs Leiroz
Fonte: Revista de Ornitología Neotropical; Aves Argentinas; Aves Argentinas / Asociación Ornitológica del Plata Publicador: Revista de Ornitología Neotropical; Aves Argentinas; Aves Argentinas / Asociación Ornitológica del Plata
Tipo: info:eu-repo/semantics/article; artículo; info:eu-repo/semantics/publishedVersion Formato: application/pdf
Publicado em /11/1997 SPA
Relevância na Pesquisa
37.147417%
La estación reproductiva del Ñandú ( Rhea americana ) presenta una variación temporal entre los estados del sur y del centro oeste y nordeste de Brasil. Este estudio tuvo como objetivo identificar la fenologia reproductiva de la especie en Rio Grande do Sul, a través del análisis de las diferentes etapas reproductivas. Se ha constatado un retraso de 30 dias aproximadamente, de diferencia en el inicio de la reproducción, con relación a las poblaciones del centro-oeste y nordeste de Brasil. Los machos demuestran preferencia por construir sus nidos en los cultivos de soja. La predación animal y la interferencia humana fueron las principales causas de abandono de los nidos por parte de los machos incubantes. Los factores climatológicos influenciaron grandemente en el éxito de las eclosiones y en la supervivencia de los pichones. Se hizo además, la biometría de nidos, huevos y pollos encontrados.; The reproductive season ofthe Greater Rhea (Rhea americana) occurs at different times at the southern, central-western and northeastern states of Brazil. The start of reproduction in the Greater Rhea at Rio Grande do Sul shows a delay of aproximately 30 days with relation to the populations in Central-east and North-east of Brazil. Males show a preference to build nests in fields of wheat and soybeans. Human and animal predation is the main cause of nest desertion by the incubating male...

Determination of the topography and biometry of chlorosomes by atomic force microscopy

Martínez-Planells, Asunción; Arellano, Juan B.; Borrego, Carles M.; López-Iglesias, Carmen; Gich, Frederic; García-Gil, L. Jesús
Fonte: Springer Publicador: Springer
Tipo: Artículo Formato: 756307 bytes; application/pdf
ENG
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8 pages, 2 figures, 2 tables.; Isolated chlorosomes of several species of filamentous anoxygenic phototrophic bacteria (FAPB) and green sulfur bacteria (GSB) were examined by atomic force microscopy (AFM) to characterize their topography and biometry. Chlorosomes of Chloroflexus aurantiacus, Chloronema sp., and Chlorobium (Chl.) tepidum exhibited a smooth surface, whereas those of Chl. phaeobacteroides and Chl. vibrioforme showed a rough one. The potential artifactual nature of the two types of surfaces, which may have arisen because of sample manipulation or AFM processing, was ruled out when AFM images and transmission electron micrographs were compared. The difference in surface texture might be associated with the specific lipid and polypeptide composition of the chlorosomal envelope. The study of three-dimensional AFM images also provides information about the size and shape of individual chlorosomes. Chlorosomal volumes ranged from ca. 35000 nm3 to 247000 nm3 for Chl. vibrioforme and Chl. phaeobacteroides, respectively. The mean height was about 25 nm for all the species studied, except Chl. vibrioforme, which showed a height of only 14 nm, suggesting that GSB have 1–2 layers of bacteriochlorophyll (BChl) rods and GFB have ~4. Moreover...

Longitudinal reference ranges for fetal ultrasound biometry in twin pregnancies

Liao, Adolfo Wenjaw; Brizot, Maria de Lourdes; Kang, Helenice Júlio; Assunção, Renata Almeida; Zugaib, Marcelo
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/01/2012 ENG
Relevância na Pesquisa
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OBJECTIVE: The purpose of this study was to establish longitudinal reference ranges for fetal ultrasound biometry measurements and growth parameters in twin pregnancies. METHOD: A total of 200 uncomplicated twin pregnancies before 21 weeks of gestation were recruited for this prospective, longitudinal study. Women who abandoned follow-up, pregnancies with unknown outcomes or pregnancies with complications were excluded. Ultrasound scans were performed every three weeks, and biparietal and occipitofrontal diameters, head and abdominal circumferences, and femur diaphysis length measurements were obtained for each fetus at each visit. Estimated fetal weight, biparietal/occipitofrontal diameter, head circumference/abdominal circumference, and femur diaphysis length/abdominal circumference ratios were also calculated. Multilevel regression analysis was performed on normalized data. RESULTS: A total of 807 ultrasound examinations were performed in 125 twin pregnancies between 14 and 38 weeks of gestation (6.5±1.4 scans/pregnancy). Regression analysis demonstrated significant correlations for all variables with gestational age, namely log of the biparietal diameter (r = 0.98), log of the occipitofrontal diameter (r = 0.98), log of the head circumference (r = 0.99)...

Testicular biometry of Nellore (Bos taurus indicus) and crossbred bulls (Bos taurus indicus x Bos taurus taurus) at 20 and 24 months of age; Biometria testicular de touros Nelore (Bos taurus indicus) e touros cruzados Nelore-europeu (Bos taurus indicus x Bos taurus taurus) aos 20 e 24 meses de idade

Valentim, Renato; Arruda, Rubens Paes; Barnabe, Renato Campanarut; Alencar, Maurício Mello
Fonte: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia Publicador: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; ; Formato: application/pdf
Publicado em 01/01/2002 POR
Relevância na Pesquisa
37.147417%
O objetivo deste trabalho foi estudar os efeitos da idade, do grupo genético e da interação entre idade e grupo genético, sobre as biometrias testiculares (circunferência escrotal e consistência testicular) Foram avaliados, aos 20 e 24 meses de idade, 190 touros Nelore e 447 touros cruzados Nelore-europeu. Aos 24 meses os exames foram repetidos. A circunferência escrotal e a consistência testicular foram influenciadas pelo grupo genético, idade e interação grupo genético x idade. Foram encontradas maiores médias de circunferência escrotal e menores de consistência testicular em cruzados que em Nelore, tanto aos 20 quanto aos 24 meses. Correlações entre circunferência escrotal As correlações entre circunferência escrotal e idade, observadas no presente experimento, foram baixas para os touros Nelore aos 20 meses e aos 24 meses assim como para os cruzados aos 20 meses e aos 24 meses, entretanto, as correlações entre circunferência escrotal e peso corporal foram maiores. As correlações entre consistência testicular e idade e entre consistência testicular e peso corporal foram baixas para a maioria dos cruzados, para os cruzados em conjunto e para os Nelores.; The objective of the present study was to evaluate the effects of age and genetic group in bulls...

Correlation between testicular biometry, age and the reproductive characteristics of Nelore bulls; CORRELAÇÃO ENTRE A BIOMETRIA TESTICULAR, A IDADE E AS CARACTERÍSTICAS REPRODUTIVAS DE TOUROS DA RAÇA NELORE

Segui, Marcio Saporski; PUCPR; Turra, Thais Angela; Mestranda da PUCPR; Faleiros, Emanuel; Mestrando PUCPR; Weiss, Romildo Romualdo; UFPR; Kozicki, Luiz Ernandes; PUCPR; Santos, Ivo Walter; UFPR
Fonte: UFPR Publicador: UFPR
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Artigo Avaliado pelos Pares Formato: application/pdf
Publicado em 26/08/2011 POR
Relevância na Pesquisa
37.147417%
O objetivo da pesquisa foi o de correlacionar a dinâmica de crescimento da biometria testicular com as características espermáticas em animais em fase de crescimento e destinados à reprodução. Foram utilizados 20 animais da raça Nelore entre 10 e 24 meses de idade, criados sob condições extensivas de pastoreio e com suplementação mineral. Constituíram-se dois grupos (G), sendo o G1 (n=10) formado por animais com a idade variando de 10 a 18 meses e o G2 (n=10) por animais com idade entre 18,1 e 24 meses ao início do experimento. Por um período de dez meses, em três distintos momentos experimentais, com intervalos de cinco meses entre eles, nos animais de ambos os grupos, realizou-se a aferição do peso corporal, mensurações da circunferência escrotal (CE), além de avaliação do vigor, motilidade e concentração espermáticas.  Houve influência da idade e do desenvolvimento corporal sobre as características reprodutivas estudadas. Ao se comparar o crescimento testicular, verificou-se que os animais do G1, tiveram maior proporção de crescimento biométrico testicular (P<0...