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Sample records for biometry

  1. Smoothing methods in biometry: a historic review

    Directory of Open Access Journals (Sweden)

    Schimek, Michael G.

    2005-06-01

    Full Text Available In Germany around 25 years ago nonparametric smoothing methods have found their way into statistics and with some delay also into biometry. In the early 1980's there has been what one might call a boom in theoretical and soon after also in computational statistics. The focus was on univariate nonparametric methods for density and curve estimation. For biometry however smoothing methods became really interesting in their multivariate version. This 'change of dimensionality' is still raising open methodological questions. No wonder that the simplifying paradigm of additive regression, realized in the generalized additive models (GAM, has initiated the success story of smoothing techniques starting in the early 1990's. In parallel there have been new algorithms and important software developments, primarily in the statistical programming languages S and R. Recent developments of smoothing techniques can be found in survival analysis, longitudinal analysis, mixed models and functional data analysis, partly integrating Bayesian concepts. All new are smoothing related statistical methods in bioinformatics. In this article we aim not only at a general historical overview but also try to sketch activities in the German-speaking world. Moreover, the current situation is critically examined. Finally a large number of relevant references is given.

  2. How to avoid mistakes in biometry

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    Nick Astbury

    2006-12-01

    Full Text Available The refractive power of the human eye depends on three factors: the power of the cornea, the power of the lens, and the length of the eye. Following cataract surgery, only the power of the cornea and the length of the eye are relevant. If both of these variables are known, it is possible to calculate what lens power will give the best refraction. Biometry is the process of measuring the power of the cornea (keratometry and the length of the eye, and using this data to determine the ideal intraocular lens power. If this calculation is not performed, or if it is inaccurate, then patients may be left with a significant refractive error.

  3. Spreadsheet tools for biometry classes in crop science programmes

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    Andrea Onofri

    2014-10-01

    Full Text Available Teaching biometry to undergraduate students in crop science or similar programmes may be a challenging task, as these students show a small background in mathematics and computer programming and are mainly interested in practical applications. It is therefore fundamental to use ‘realistic’ case-studies and provide the students with statistical software that does not overload them with a steep learning curve. This paper wishes to bring to the attention of readers two new EXCEL macro add-ins (DSAASTAT and BIOASSAY97, which have been extensively tested, validated and used as teaching aids in biometry courses. They only require a basic knowledge of spreadsheet environments and may also be useful for technicians and practitioners for general data analyses of ‘routine’ field experiments

  4. Korrelation von Biometrie und Genom von Mäuseeizellen

    OpenAIRE

    Petersen, Katrin

    2010-01-01

    Die vorliegende Arbeit beschäftigt sich mit der Farge, ob eine Korrelation von Biometrie und Genom bei Mäuseeizellen besteht. Dadurch soll versucht werden, die Schwangerschaftsrate im Rahmen assistierter Fertilisation durch optische Beurteilung der Eizellen und Vorauswahl anhand morphologischer und biometrischer Kriterien, also nicht invasiver Maßmahmen, zu erhöhen. Die Untersuchungen erfolgten an Mäuseeizellen und sollen eine mögliche Übertragbarkeit auf menschliche Eizellen herstellen mit W...

  5. Spreadsheet tools for biometry classes in crop science programmes

    OpenAIRE

    Andrea Onofri; Euro Pannacci

    2014-01-01

    Teaching biometry to undergraduate students in crop science or similar programmes may be a challenging task, as these students show a small background in mathematics and computer programming and are mainly interested in practical applications. It is therefore fundamental to use ‘realistic’ case-studies and provide the students with statistical software that does not overload them with a steep learning curve. This paper wishes to bring to the attention of readers two new EXCEL macro add-ins (D...

  6. Challenges and approaches in modern biometry and IOL calculation.

    Science.gov (United States)

    Haigis, Wolfgang

    2012-01-01

    The introduction of new intraocular lenses (IOLs), industry marketing to the public and patient expectations has warranted increased accuracy of IOL power calculations. Toric IOLs, multifocal IOLs, aspheric IOLs, phakic lenses, accommodative lenses, cases of refractive lens exchange and eyes that have undergone previous refractive surgery all require improved clinical measurements and IOL prediction formulas. Hence, measurement techniques and IOL calculation formulas are essential factors that affect the refractive outcome. Measurement with ultrasound has been the historic standard for measurement of ocular parameters for IOL calculation. However the introduction of optical biometry using partial coherence interferometry (PCI) has steadily established itself as the new standard. Additionally, modern optical instruments such as Scheimpflug cameras and optical coherence tomographers are being used to determine corneal power that was normally the purview of manual keratometry and topography. A number of methods are available to determine the IOL power including the empirical, analytical, numerical or combined methods. Ray tracing techniques or paraxial approximation by matrix methods or classical analytical 'IOL formulas' are actively used in for the prediction of IOL power. There is no universal formula for all cases - phakic and pseudophakic cases require different approaches, as do short eyes, long eyes, astigmatic eyes or post-refractive surgery eyes. Invariably, IOLs are characterized by different methods and lens constants, which require individual optimization. This review describes the current methods for biometry and IOL calculation. PMID:23960962

  7. OCULAR BIOMETRY IN ANGLE CLOSURE GLAUCOMA AND SENILE CATARACT

    Institute of Scientific and Technical Information of China (English)

    WANG Yu-lan; SHENG Yao-hua; YE Xiang-yu

    2008-01-01

    Objective To compare ocular biometric values in angle closure glaucoma and cataract in senile population.Methods Ocular biometry was performed in eyes classified to have angle closure glaucoma (29 eyes) and senile cataract (31 eyes). Ocular biometry readings between two groups were compared and analyzed statistically. Intraocular pressure was also recorded before and after lens extraction.Results Anterior chamber depth was shallower in patients with angle closure glaucoma group [(1.79±0.56) mm] compared with senile cataract group [(2.69±0.40) mm] (P<0.01). Lens thickness was greater in angle closure glaucoma group [(5.30±0.61) mm] than that in senile cataract group [(3.84±0.61) mm] (P<0.01). Phacoemusification was performed in 5 patients with persistent acute attack of angle closure glaucoma. IOPs were controlled in all five cases after lens extraction.Conclusion Eyes with angle closure glaucoma seems to have significantly shallow anterior chamber and greater lens thickness compared to senile cataract eyes in the same age. Lens extraction might be effective in those cases with such anatomy features.

  8. E-learning approaches in biometry and epidemiology

    Directory of Open Access Journals (Sweden)

    Ziegler, Andreas

    2010-01-01

    Full Text Available Education is an integral component of increasing our profession’s profile. While master and PhD level education in biostatistics and epidemiology is provided at high levels in several regions, there are parts of the world deserving proper specialized education. E-learning may be one option because traveling costs can be avoided, and the capacity of teachers can be multiplied by making appropriate use of e-learning tools. The aim of this work was to explore the availability of e-learning approaches in the areas of statistics, biometry, biostatistics, epidemiology, and genetic epidemiology by a systematic literature search and a search in databases. We identified a total of 25 courses. They differ with respect to target audience, content, amount and quality. Many of them had been developed at a time when technical aspects were the main hurdle at the stage of course development. Important hygiene and motivation factors were generally unknown at that time, and, subsequently, ignored. As a result, none of the courses provides exercises that generate individual feedback to motivate the student, and no varying degree of complexity is observed. Many courses do not fulfill modern needs for e-learning. In conclusion, the development of modern e-learning following recent didactical concepts is urgently required. Sustainability of these courses is crucial and can be best guaranteed by using available technological platforms. These allow the use of common didactical principles, robust and reliable technology.

  9. Biometry traits and geometric morphometrics in sea bass (Dicentrarchus labrax from different farming systems

    Directory of Open Access Journals (Sweden)

    Emilio Tibaldi

    2010-01-01

    Full Text Available The effect of the farming system on biometry traits and dressing out yield were inves- tigated in market-size European sea bass (Dicentrarchus labrax cultured extensively or intensively in sea cages or land-based basins. Fish external appearences and shapes were studies with geometric morphometrics in order to assess the potential of combined methodologies in the assessment of finfish quality. Both standard biometry and geometric morphometrics were able to discriminate between sea bass farmed extensively from those cultured under intensive conditions. Geometric morphometrics has been shown to be a valuable tool for describing changes in shape features and could result a useful technique to be associated to biometry traits in the context of fish quality assessment.

  10. Laser optical method of visualizing cutaneous blood vessels and its applications in biometry and photomedicine

    Science.gov (United States)

    Asimov, M. M.; Asimov, R. M.; Rubinov, A. N.

    2011-05-01

    We propose and examine a new approach to visualizing a local network of cutaneous blood vessels using laser optical methods for applications in biometry and photomedicine. Various optical schemes of the formation of biometrical information on the architecture of blood vessels of skin tissue are analyzed. We developed an optical model of the interaction of the laser radiation with the biological tissue and a mathematical algorithm of processing of measurement results. We show that, in medicine, the visualization of blood vessels makes it possible to calculate and determine regions of disturbance of blood microcirculation and to control tissue hypoxia, as well as to maintain the local concentration of oxygen at a level necessary for the normal cellular metabolism. We propose noninvasive optical methods for modern photomedicine and biometry for diagnostics and elimination of tissue hypoxia and for personality identification and verification via the pattern of cutaneous blood vessels.

  11. Biometry based ageing of nestling Indian Spotted Owlets (Athene brama brama

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    Satish Pande

    2011-10-01

    Full Text Available Biometric analysis helps in sex differentiation, understanding development and for studies of avian biology such as foraging ecology, evolutionary ecology, and survivorship. We suggest that biometry can also be a reliable, practical and inexpensive tool to determine the age of nestlings in the field by non-invasive methods. As an example we studied the biometry of wing, culmen, talon, tarsus and body mass of nestling southern Indian Spotted Owlets (Athene brama brama. Based on the growth pattern analysis using logistic growth model, discriminant analysis and CHAID (Chi-squared Automatic Interaction Detection based decision tree, we show that biometry of nestling Spotted Owlets is an easy, reliable and inexpensive method to determine nestling age and to assess growth rate and relative nutritional status. These biometric parameters also allow us to predict their ability to initiate first flight from the nest site. This method is described here for the first time and we postulate that such charts can be devised for other avian species as well, so as to assist conservation biologists and bird rescuers.

  12. Morfologi dan Biometri Spermatozoa Anoa (Bubalus Sp. yang Diwarnai dengan Pewarna William’s dan Eosin-Nigrosin

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    Yudi

    2010-08-01

    Full Text Available Anoa is Indonesia endemic fauna that included into Appendix I by CITES. Anoa breeding efforts have not succeed, due to their agressivity, soliter, wildness and monogamous. The aim of this experiment was to observe morphology and biometry of anoa’s sperm stained using William’s (W and eosin-nigrosin (EN. Semen was collected from two male anoas by electroejaculator. Slides was made for morphology and biometry observation of ejaculate. The results showed that abnormal sperm morphology of the mature anoa (10 years was 32.27%-35.00%, meanwhile the young one (3 years was 24.03%–31.89%. In mature anoa, measurement for head width, and midpiece and tail length of sperm were not signficantly different between W and EN staining, but significantly different (P<0.05 for head and total length. In the young anoa, sperm biometry for head width was not significanly different between W and EN staining. In both W and EN staining, biometry for head width and total length were not significantly different between mature and young anoas, but significantly different for head, midpiece and tail length. According to sperm morphology, semen from the young anoa was slightly better than those of the mature anoa. Staining method and age could affect to biometry of the anoa’s sperm.

  13. Assessment of femur length for fetal biometry in Malaysian pregnant women

    Science.gov (United States)

    Ramli, Ramzun Maizan; Adam, Noraina; Jaafar, Mohamad Suhaimi; Rahman, Azhar Abdul; Mustafa, Iskandar Shahrim; Radzi, Yasmin; Nordin, Suriani; Kamarudin, Izyani

    2013-05-01

    The fetal biometry assessment of femur length (FL) was developed in most countries to evaluate the foetus growth. In this study, the FL values for Malaysia population were determined. A prospective study was conducted and a number of 6501 pregnant women were involved with 12372 FL data were collected, performed at antenatal care clinic of Hospital Pulau Pinang, Malaysia. The SPSS software version 17 (regression analysis and paired sample t-test) were used for analysis. The FL values of this study were constructed and rapid FL growth rate in second trimester (2.59 mm/week) than third trimester (1.43 mm/week) was observed. By ethnicity, no significant difference (p ≥ 0.05) was found between the FL values for fetuses of Malay and Indian ethnic's mother (t = -2.042), however these two groups shows significantly (p < 0.05) higher values than those of Chinese ethnic's mother (t = 4.019, 4.083; accordingly). The FL values of Malaysian resulted as significant difference with the common reference FL values from USA and UK, and also with selected Asian populations (India, China, Korea and Japan). As conclusion, it is strong suggested that medical practitioner in Malaysia should avoid in using biometry references based on other population to avoid under- or over-estimation and for accurate assessment of the fetus growth. As this study involved local Malaysian fetuses, therefore the medical practitioner can use the FL values of this study as reference value for fetus biometry assessment in Malaysia.

  14. Refractive outcomes comparison between the Lenstar LS 900® optical biometry and immersion A-scan ultrasound.

    Science.gov (United States)

    Naicker, Palanyraj; Sundralingam, Siva; Peyman, Mohammadreza; Juana, Azida; Mohamad, Nor Fadhilah; Win, Maung Maung; Loo, Angela; Subrayan, Visvaraja

    2015-08-01

    To determine the accuracy of intraocular lens (IOL) calculations in eyes undergoing phacoemulsification cataract surgery with IOL implantation using immersion A-scan ultrasound (US) and Lenstar LS 900(®) biometry. In this prospective study, 200 eyes of 200 patients were randomized to undergo either Lenstar LS 900(®) or immersion A-scan US biometry to determine the IOL dioptric power prior to phacoemulsification cataract surgery. Post-operative refractive outcomes of these two groups of patients were compared. The result showed no significant difference between the target spherical equivalent (SE) and the post-operative SE value by the Lenstar LS 900(®) (p value = 0.632) or immersion A-scan US biometry (p value = 0.438) devices. The magnitude of difference between the two biometric devices were not significantly different (p value = 0.868). There was no significant difference in the predicted post-operative refractive outcome between immersion A-scan US biometry and Lenstar LS 900(®). Based on the results, the immersion A-scan US technique is as accurate as Lenstar LS 900(®) in the hands of an experienced operator.

  15. Value of dual biometry in the detection and investigation of error in the preoperative prediction of refractive status following cataract surgery.

    LENUS (Irish Health Repository)

    Charalampidou, Sofia

    2012-02-01

    PURPOSE: To report the value of dual biometry in the detection of biometry errors. METHODS: Study 1: retrospective study of 224 consecutive cataract operations. The intraocular lens power calculation was based on immersion biometry. Study 2: immersion biometry was compared with optical coherence biometry (OCB) in terms of axial length, anterior chamber depth, keratometry readings and the recommended lens power to achieve emmetropia. Study 3: prospective study of 61 consecutive cataract operations. Both immersion and OCB were performed, but lens power calculation was based on the latter. RESULTS: Study 1: 115 (86%), 101 (75.4%), 90 (67.2%) and 50 (37.3%) of postoperative spherical equivalents were within +\\/-1.5 dioptres (D), +\\/-1.25 D, +\\/-1 D and +\\/-0.5 D of the target, respectively. Study 2: excellent agreement between axial length readings, anterior chamber depth readings and keratometry readings by immersion biometry and OCB was observed (reflected in a mean bias of -0.065 mm, -0.048 mm and +0.1803 D, respectively, in association with OCB). Agreement between the lens power recommended by each technique to achieve emmetropia was poor (mean bias of +1.16 D in association with OCB), but improved following appropriate modification of lens constants in the Accutome A-scan software (mean bias with OCB = -0.4 D). Study 3: 37 (92.5%) and 23 (57.5%) of operated eyes achieved a postoperative refraction within +\\/-1 D and +\\/-0.5 D of target, respectively. CONCLUSION: Systematic errors in biometry can exist, in the presence of acceptable postoperative refractive results. Dual biometry allows each biometric parameter to be scrutinized in isolation, and identify sources of error that may otherwise go undetected.

  16. Testicular biometry and semen characteristics in captive and wild squirrel monkey species (Saimiri sp.).

    Science.gov (United States)

    Oliveira, K G; Santos, R R; Leão, D L; Queiroz, H L; Paim, F P; Vianez-Júnior, J L S G; Domingues, S F S

    2016-08-01

    Differential phenotypic characteristics for taxonomic diagnosis purposes are well determined in the genus Saimiri (squirrel monkey). However, data on its reproductive characteristics are lacking. Our aim was to determine testicular biometry and correlate with seminal analysis in captive (Saimiri collinsi) and free living (Saimiri vanzolinii, Saimiri cassiquiarensis, and Saimiri macrodon) squirrel monkeys. Testicular length, width, height, circumference, and volume were measured. Testicular biometry showed no differences between right and left testicles within the same species, as well as among species. Semen collected by electroejaculation was constituted of a liquid and coagulated fraction, or only one of them. No significant difference was observed between mean volumes of liquid (49.2 ± 68.9 μL: S. collinsi; 28.3 ± 59.8 μL: S. vanzolinii; 5 ± 7.1 μL: S. cassiquiarensis; and 0 μL: S. macrodon) and coagulated (65.4 ± 142.1 μL: S. collinsi; 125.8 ± 142.5 μL: S. vanzolinii; 175 ± 176.8 μL: S. cassiquiarensis; and 500 μL: S. macrodon) fractions within species or when each fraction was compared among the studied species. No correlation between testicular volume and seminal volume was observed when liquid (R = 0.31, S. collinsi; R = -0.69, S. vanzolinii) and coagulated (R = 0.32, S. collinsi; R = -0.37, S. vanzolinii) fractions were evaluated. No sufficient data were obtained for the other two species. Seminal quality was similar among species, and the most common defect was coiled tail. The method of electroejaculation yielded satisfactory results on these species, under field conditions. PMID:27063055

  17. Fingerprint biometry

    OpenAIRE

    Kubica, Roman

    2011-01-01

    Úvodní část práce je zaměřena na seznámení s principy biometrických metod zpracování otisku prstu. Obsahuje klasifikaci a popis jednotlivých typů analýz otisku prstu rozdělených dle algoritmu porovnávání identifikovaného vzoru s obrazy z databáze. V navazující části se práce věnuje jejich zhodnocení na základě úspěšnosti experimentálních výsledků a popisu dostupných databází. Hlavním cílem této práce je vytvoření programu porovnávajícího snímaný otisk prstu s odpovídajícím vzorem získaným z d...

  18. Effect of aguamiel (agave sap on hematic biometry in rabbits and its antioxidant activity determination

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    Héctor Silos-Espino

    2011-04-01

    Full Text Available In this work, we analysed the effect of aguamiel (sap from Agave salmiana on haematic biometry in rabbits as well as its antioxidant activity with the objective of determining its nutritional value. Nine male Landrace 55-day-old rabbits were sorted into three groups of three rabbits each, which had access to fresh aguamiel, boiled aguamiel and water instead of aguamiel. Commercial rabbit food was supplied ad libitum to each experimental unit. Fresh aguamiel promoted weight increases of about 13% by the seventh week. Haemoglobin counts increased by 4.5% and 9% when rabbits were fed with fresh and boiled aguamiel, respectively. Haematocrit counts increased from 2.6% to 5.3%. Mean corpuscular volume did not show a change. Mean corpuscular haemoglobin significantly increased up to 12% above that previously reported on rabbits. Observed Fe (fixed to transferrin, transferrin and ferritin content increased slightly when fresh aguamiel was included in the diet, as compared to the control. In bone, Fe increased 79.3% (boiled aguamiel while P increased 23.6% (fresh aguamiel. In antioxidant activity determination, the aguamiel showed 20% with respect to that found in coffee and/or grape juice (commercial beverages with a high antioxidant capability, 226.2 µmol gallic acid equivalent and 35.1 mg ascorbic acid in 250 mL, respectively. These results showed that aguamiel is an innocuous beverage to feed animals, conferring some beneficial properties, and it could be considered as a nutraceutical product.

  19. Effect of pupillary dilation on Haigis formula-calculated intraocular lens power measurement by using optical biometry

    Science.gov (United States)

    Khambhiphant, Bharkbhum; Sasiwilasagorn, Suganlaya; Chatbunchachai, Nattida; Pongpirul, Krit

    2016-01-01

    Purpose The purpose of this study was to evaluate the effect of pupillary dilation on the Haigis formula-calculated intraocular lens (IOL) power and ocular biometry measurements by using IOLMaster®. Methods A prospective study was performed for biometry measurements of 373 eyes of 192 healthy subjects using the IOLMaster at the outpatient department of King Chulalongkorn Memorial Hospital from February 2013 to July 2013. The axial length (AL), anterior chamber depth (ACD), keratometry (K), and IOL power were measured before and after 1% tropicamide eye drop instillation. The Haigis formula was used in the IOL power calculation with the predicted target to emmetropia. Each parameter was compared by a paired t-test prior to and after pupillary dilation. Bland–Altman plots were also used to determine the agreement between each parameter. Results The mean age of the subjects was 53.74±14.41 years (range 18–93 years). No differences in AL (P=0.03), steepest K (P=0.42), and flattest K (P=0.41) were obtained from the IOLMaster after pupillary dilation. However, ACD and IOL power were significantly different postdilation (P<0.01 and P<0.01, respectively). In ACD and IOL power measurements, the concordance rates were 93.03% and 97.05% within 95% limits of agreement (−0.48 to 0.26 mm and −1.09 to 0.88 D, respectively) in the Bland–Altman plots. Conclusion Biometry measurements in the cycloplegic stage should be considered in the IOL formulas that use parameters other than AL and K. PMID:27555746

  20. Effect of pupillary dilation on Haigis formula-calculated intraocular lens power measurement by using optical biometry

    Directory of Open Access Journals (Sweden)

    Khambhiphant B

    2016-07-01

    Full Text Available Bharkbhum Khambhiphant,1 Suganlaya Sasiwilasagorn,2 Nattida Chatbunchachai,3 Krit Pongpirul2,4 1Department of Ophthalmology, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, 2Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, 3Department of Ophthalmology, Samut Prakan Hospital, Samut Prakan, Thailand; 4Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA Purpose: The purpose of this study was to evaluate the effect of pupillary dilation on the Haigis formula-calculated intraocular lens (IOL power and ocular biometry measurements by using IOLMaster®. Methods: A prospective study was performed for biometry measurements of 373 eyes of 192 healthy subjects using the IOLMaster at the outpatient department of King Chulalongkorn Memorial Hospital from February 2013 to July 2013. The axial length (AL, anterior chamber depth (ACD, keratometry (K, and IOL power were measured before and after 1% tropicamide eye drop instillation. The Haigis formula was used in the IOL power calculation with the predicted target to emmetropia. Each parameter was compared by a paired t-test prior to and after pupillary dilation. Bland–Altman plots were also used to determine the agreement between each parameter. Results: The mean age of the subjects was 53.74±14.41 years (range 18–93 years. No differences in AL (P=0.03, steepest K (P=0.42, and flattest K (P=0.41 were obtained from the IOLMaster after pupillary dilation. However, ACD and IOL power were significantly different postdilation (P<0.01 and P<0.01, respectively. In ACD and IOL power measurements, the concordance rates were 93.03% and 97.05% within 95% limits of agreement (-0.48 to 0.26 mm and -1.09 to 0.88 D, respectively in the Bland–Altman plots. Conclusion: Biometry measurements in the cycloplegic stage should be considered in the IOL formulas that use parameters other than AL and K. Keywords: Haigis

  1. BIOMETRY AND TESTICULAR GROWTH INFLUENCED BY NUTRITION ON PREPUBERTAL PELIBUEY LAMBS

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    J.M. MARTINEZ

    2012-05-01

    Full Text Available The growth and testicular development was studied in 48 Pelibuey male lambs 76.6±3.0 days of age and 12.7±1.9 kg body weight (BW, two groups were designed (n=24. 1: Intensive rotational grassing (IRG, 2: Intensive rotational grassing plus nutritional supplement (IRGS. BW was recorded every 15 days from 75 days of age to the onset of puberty. The animals grazed on Panicum maximum. IRGS received a concentrate with 15% of protein. The testicular biometry included scrotal circumference (SC and testicular volume (TV. Blood samples were collected each 15 days from 90 to 190 days of age for evaluate the testosterone concentrations. BW, SC and TV at histological puberty was higher in IRGS than IRG; 22.5±1.5 vs. 16.06±1.5 kg, 22.0±1.0 vs. 12.2±1.5 cm, 60.5±1.7 vs. 12±3.5 cm3 respectively (P<0.05 with an average age for the two groups of 162±7.0 days. The correlation coefficient (R was higher (P<0.05 for SC vs BW than age vs BW (0.884 vs 0.816 and the TV vs. BW than TV vs. age (0.849 vs. 0.777 in the IRGS; the IRG showed lower R for the same comparisons (P<0.05. Seminiferous tubules showed lumen by day 142, spermatids and spermatozoids by day 171 for IRGS, meanwhile in the IRG only showed gonocytes and Sertoli cells. Testosterone concentrations reached a peak (2.5 ng/ml at 168 days of age for the IRGS meanwhile the IRG showed lower levels than 0.05 ng/ml. Testicular development and testosterone concentrations depends more on BW than age; and they are modified by the nutritional management in prepuberal male lambs.

  2. Sonographic biometry of liver size among Igbo school age children of South east, Nigeria

    International Nuclear Information System (INIS)

    Background: The endemic diseases in the locality which are associated with changes in liver size necessitate sonographic biometry of this organ. Objectives: To establish by ultrasonography the normal limits and variations of the liver size according to age, sex, height, weight, body surface area and body mass index among school age children. Methods: This was a cross-sectional, hospital based study done at university of Nigeria medical center, Nsukka between January 2011 and June 2011. Participants included 947 apparently healthy subjects comprising 496 boys and 451 girls aged 6–17 years. The intra- and inter rater reliability of sonographic measurement of the liver size was determined. The sonographic examination was performed on Shenzhen DP-1100 machine with 3.5 MHz convex transducer. The longitudinal dimension of the liver was obtained in the midclavicular plane with the subject in deep inspiration. The weight and height of the subjects were obtained with the participants wearing light weight street clothes without shoes. Results: Measurement of liver length was reliable within and between sonographers. The mean of the liver length was 116.3 ± 10.6 mm. Dimension of the liver was not statistically different in boys and girls (p > 0.05). Height correlated best with the liver dimension followed by age, body surface area, weight, body mass index, and sex. The percentile curves, normal limits and prediction model of the liver dimension were defined according to height of the subjects. Conclusion: Determination of pathologic changes in the size of the liver necessitates knowing the normal ranges of dimension for the liver especially with respect to height in this population

  3. Effect of pupillary dilation on Haigis formula-calculated intraocular lens power measurement by using optical biometry

    Science.gov (United States)

    Khambhiphant, Bharkbhum; Sasiwilasagorn, Suganlaya; Chatbunchachai, Nattida; Pongpirul, Krit

    2016-01-01

    Purpose The purpose of this study was to evaluate the effect of pupillary dilation on the Haigis formula-calculated intraocular lens (IOL) power and ocular biometry measurements by using IOLMaster®. Methods A prospective study was performed for biometry measurements of 373 eyes of 192 healthy subjects using the IOLMaster at the outpatient department of King Chulalongkorn Memorial Hospital from February 2013 to July 2013. The axial length (AL), anterior chamber depth (ACD), keratometry (K), and IOL power were measured before and after 1% tropicamide eye drop instillation. The Haigis formula was used in the IOL power calculation with the predicted target to emmetropia. Each parameter was compared by a paired t-test prior to and after pupillary dilation. Bland–Altman plots were also used to determine the agreement between each parameter. Results The mean age of the subjects was 53.74±14.41 years (range 18–93 years). No differences in AL (P=0.03), steepest K (P=0.42), and flattest K (P=0.41) were obtained from the IOLMaster after pupillary dilation. However, ACD and IOL power were significantly different postdilation (Pformulas that use parameters other than AL and K.

  4. Gambling kick or content motivation - what is really initialized by the introduction of software into medical biometry lessons???

    Directory of Open Access Journals (Sweden)

    Krummenauer, Frank

    2005-08-01

    Full Text Available Bachground: Teaching statistics to members of non-mathematical disciplines becomes increasingly based on the involvement of interactive learning software. The latter is expected to both increase understanding and motivation and thereby as well studential acceptance. The teaching model implemented at the Medical Biometry Department in Mainz will be used to consider the value of introducing an interactive software like SPSS® into biometry lessons by means of studential evaluations.Methods: After an introductory lecture series, the participants of the Medical Biometry (formerly "Biomathematics" practical courses are requested to solve real data exercises by means of the software SPSS®, where each lessons aims to the derivation of a result synopsis summarizing the results of the performed statistical analyses. In summer 2002 the students of this course were asked to fill out a standardized teaching quality assessment questionnaire on the acceptance of the previous lecture series, the practical course lessons and the involvement of the software.Results: Between the 7 parallel courses the fraction of students reporting "good management with SPSS" varies between 43% and 88% (pooled estimate 58%, but among these students only 30% report a good / very good understanding of the lessons' context and only 15% a good / very good learning effect. Among students with "problems in SPSS management" these fractions both turned out 13%. Among the students with "good management with SPSS", however, 70% considered the understanding during the lecture series as good / very good, 73% reported a good / very good learning effect for the lectures; among the other students both fractions were 13%. These subgrupus only differed significantly for the questionnaire dimension "content motivation" (Likelihood Ratio p<0.001 after correction for teacher effects. Neither the lessons' structure (p=0.362, their relation to the introductory lecture series (p=0.165 nor the teachers

  5. BIOMETRY AND EMERGENCE Amburana cearensis (Allemão A.C.Smith ACCORDING TO THE FRUIT COLOR

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    Giovana Lopes da Silva

    2013-12-01

    Full Text Available http://dx.doi.org/10.5902/1980509812347This paper evaluated the biometry of fruits, seeds and seedling emergence of Amburana cearensis (AllemãoAC Smith derived from fruits with different stages of coloring and drying. Fruits of red color, dark andclosed and the ground seeds were collected after dehiscence of the fruit. At each stage of maturation, length,width and thickness of fruits and seeds were measured. Then, we proceeded to the descriptive analysis.To test the emergency four replicates of 25 seeds were seeded and distributed in a completely randomizeddesign with factorial [(2 x 2 + 1] and two fruit colors (red and dark and two drying conditions (with andwithout and an additional (seeds collected on the ground after dehiscence. The evaluation was done bydetermining: the percentage, index of speed and average time of emergency, and measuring the height andshoot dry matter of the seedling. Considering the results, it was found that red and black fruits and theirseeds of Amburana cearensis have different biometric characteristics and the drying process favors theemergence percentage, but had no positive effect on height and shoot dry matter.

  6. Recommendations for the implemantation of the new German medical curriculum (27.6.2002) in the subjects Epidemiology, Medical Biometry and Medical Informatics

    OpenAIRE

    Hilgers, Ralf-Dieter; Feldmann, Uwe; Jöckel, Karl-Heinz; Klar, Rüdiger; Rienhoff, Otto; Schäfer, Helmut; Selbmann, Hans-Konrad; Wichmann, H.-Erich

    2005-01-01

    In the Approbationsordnung für Ärzte (German regulation for the Curriculum in Medicine) of 27th June, 2002 the disciplines Epidemiology, Medical Biometry and Medical Informatics are combined in one obligatory cross-sectional subject of the second part of the medical exam. In addition, it is possible to study topics from these disciplines in more detail on a voluntary basis. The aim of teaching this cross-sectional subject is to qualify the students to assess their own actions critically, to a...

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

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    Ozdemir Ozdemir

    2015-06-01

    Full Text Available 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, with higher correlations for vitreous and axial lengths than for anterior chamber depth and lens thickness. It was concluded that axial elongation resulted primarily from increasing posterior chamber length.

  8. DXA, bioelectrical impedance, ultrasonography and biometry for the estimation of fat and lean mass in cats during weight loss

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    Borges Naida C

    2012-07-01

    Full Text Available Abstract Background Few equations have been developed in veterinary medicine compared to human medicine to predict body composition. The present study was done to evaluate the influence of weight loss on biometry (BIO, bioimpedance analysis (BIA and ultrasonography (US in cats, proposing equations to estimate fat (FM and lean (LM body mass, as compared to dual energy x-ray absorptiometry (DXA as the referenced method. For this were used 16 gonadectomized obese cats (8 males and 8 females in a weight loss program. DXA, BIO, BIA and US were performed in the obese state (T0; obese animals, after 10% of weight loss (T1 and after 20% of weight loss (T2. Stepwise regression was used to analyze the relationship between the dependent variables (FM, LM determined by DXA and the independent variables obtained by BIO, BIA and US. The better models chosen were evaluated by a simple regression analysis and means predicted vs. determined by DXA were compared to verify the accuracy of the equations. Results The independent variables determined by BIO, BIA and US that best correlated (p r2, 19 equations were selected (12 for FM, 7 for LM; however, only 7 equations accurately predicted FM and one LM of cats. Conclusions The equations with two variables are better to use because they are effective and will be an alternative method to estimate body composition in the clinical routine. For estimated lean mass the equations using body weight associated with biometrics measures can be proposed. For estimated fat mass the equations using body weight associated with bioimpedance analysis can be proposed.

  9. Nonhuman Primate Ocular Biometry

    Science.gov (United States)

    Augusteyn, Robert C.; Maceo Heilman, Bianca; Ho, Arthur; Parel, Jean-Marie

    2016-01-01

    Purpose To examine ocular growth in nonhuman primates (NHPs) from measurements on ex vivo eyes. Methods We obtained NHP eyes from animals that had been killed as part of other studies or because of health-related issues. Digital calipers were used to measure the horizontal, vertical, and anteroposterior globe diameters as well as corneal horizontal and vertical diameters of excised globes from 98 hamadryas baboons, 551 cynomolgus monkeys, and 112 rhesus monkeys, at ages ranging from 23 to 360 months. Isolated lens sagittal thickness and equatorial diameter were measured by shadowphotogrammetry. Wet and fixed dry weights were obtained for lenses. Results Nonhuman primate globe growth continues throughout life, slowing toward an asymptotic maximum. The final globe size scales with negative allometry to adult body size. Corneal growth ceases at around 20 months. Lens diameter increases but thickness decreases with increasing age. Nonhuman primate lens wet and dry weight accumulation is monophasic, continuing throughout life toward asymptotic maxima. The dry/wet weight ratio reaches a maximum of 0.33. Conclusions Nonhuman primate ocular globe and lens growth differ in several respects from those in humans. Although age-related losses of lens power and accommodative amplitude are similar, lens growth and properties are different indicating care should be taken in extrapolating NHP observations to the study of human accommodation. PMID:26780314

  10. Recommendations for the implemantation of the new German medical curriculum (27.6.2002 in the subjects Epidemiology, Medical Biometry and Medical Informatics

    Directory of Open Access Journals (Sweden)

    Hilgers, Ralf-Dieter

    2005-04-01

    Full Text Available In the Approbationsordnung für Ärzte (German regulation for the Curriculum in Medicine of 27th June, 2002 the disciplines Epidemiology, Medical Biometry and Medical Informatics are combined in one obligatory cross-sectional subject of the second part of the medical exam. In addition, it is possible to study topics from these disciplines in more detail on a voluntary basis. The aim of teaching this cross-sectional subject is to qualify the students to assess their own actions critically, to apply recommendations with care, and to learn to use tools like systematic documentation and modern information technology.For the mentioned disciplines a catalogue has been developed which is subdivided in three parts. In the first part methods are described which are needed to support medical decisions. The second part refers to support of medical supply and quality management, whereas the third part deals with the basic elements of Public Health and Health Economics, with respect to causation of diseases and prevention.

  11. BIOMETRY OF PACA NEWBORNS BRED IN CAPTIVITY(AGOUTI PACA, LINNAEUS, 1766 NOTA CIENTÍFICA: BIOMETRIA DOS NEONATOS DE PACA CRIADOS EM CATIVEIRO (AGOUTI PACA, LINNAEUS, 1766

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    Júlio Carlos Canola

    2007-12-01

    Full Text Available

    Biometry provides important data on weight and length of wild animal newborns. After ultrasound pregnancy detection, 22 female pacas were separated in individual bails and kept until weaning of newborns. Newborns were measured with a metric tape (between the tips of the muzzle rostrally and the tail distally and weighted in a digital weight scale. Considering males and females, the average newborn length (average length ± standard deviation was 33.37 ± 0.57cm. Among males, the average weight was 33.30 ± 0.52 cm and among females 33.45 ± 0.62cm. Considering males and females, newborns weighted (average weight ± standard deviation 741.14 ± 51.23g. Among males, average weight was 717.75 ± 49.06g and among females 764.53 ± 53.40g. Female newborns are higher and heavier than males, but averages of weight and length of males and females did not differ themselves by the Tukey test (P<0.05.

    Key-words: Agouti paca, biometry, newborns.

    A biometria proporciona dados importantes no peso e comprimento de neonatos de animais selvagens. Após detecção ultra-sonográfica da prenhez, 22 pacas fêmeas foram separadas em baias individuais e mantidas até o desmame dos filhotes. Os neonatos eram medidos com uma fita métrica flexível (entre as extremidades do focinho e da caudal e então pesados em balança digital de precisão. Considerando-se machos e fêmeas, o comprimento dos neonatos (comprimento ± desvio padrão foi 33,37 ± 0,57 cm. Entre os machos, o comprimento médio foi 33,30 ± 0,52 cm e entre as fêmeas foi de 33,45 ± 0,62 cm. Em relação ao peso e considerando-se machos e fêmeas, os neonatos pesavam (peso ± desvio padrão 741,14 ± 51,23g. Entre os machos, o peso médio foi 717,75 ± 49,06g e entre as fêmeas 764,53 ± 53,40g. Os neonatos fêmeas são maiores e mais pesados que os neonatos machos de paca, mas as médias de peso e de comprimento de machos e fêmeas n

  12. 角膜塑形术后眼前节形态及调节功能%Anterior segment biometry and accommodative function after orthokeratology

    Institute of Scientific and Technical Information of China (English)

    朱伟根; 张莎莎; 邵一磊; 袁一民; 沈梅晓; 瞿佳

    2016-01-01

    Objective To investigate the changes in accommodative response and anterior segment biometry during accommodation in young progressive myopes who wear overnight orthokeratology lenses.Methods Eighteen children (age:14.4±2.6 years) were enrolled in this prospective experimental study and were tested before wearing orthokeratology (OK) lenses and after wearing them for three months.Using a Badal optical system,the refractive error of each subject was corrected before and after lens wear,and then accommodative stimuli of 3 D and 5 D were presented.A custom-built optical coherence tomographer (OCT) with a long scan depth was used to image the entire anterior segment through the pupil,and to obtain the anterior segment biometry including pupil diameter (PD),anterior chamber depth (ACD),lens thickness (LT) and the lens anterior surface's radius of curvature (LAC).An auto-refractometer (WAM-5500) was used to measure ocular refraction during accommodation,which was used to calculate the accommodative response.The measurements of anterior segment biometry and accommodative response were repeated twice under each accommodative state.Results After wearing orthokeratology lenses for one to three months,an improvement in the accommodative response was evident under both the 3 D (1.72±0.59 D vs.2.42±0.84 D) and 5 D (3.09±0.63 D vs.3.61±0.86 D) accommodative states (paired t-test,t=2.84,2.12,P<0.05).During accommodation,△PD,△ACD,△LT,and △LAC changed obviously.Compared with baseline (before wearing OK lenses),accommodation-related changes in △ACD (3 D:-0.11±0.04 mm vs.-0.16±0.06 mm,t=3.88,P<0.01;5 D:-0.15±0.05 mm vs.-0.20±0.07 mm,t=2.37,P<0.05),△LAC (3 D:-2.60±0.79 mm vs.-3.81±1.08 mm,t=3.96,P<0.01;5 D:-3.57±1.14 mm vs.-4.32±1.36 mm,t=2.08,P<0.05) and △LT (3 D:0.22±0.13 mm vs.0.27±0.06 mm,t=-1.94,P<0.05;5 D:0.26± 0.09 mm vs.0.30±0.10 mm,t=-1.99,P<0.05) showed statistically significant increases.Conclusion After wearing orthokeratology

  13. Biometry of anterior segment of human eye on both horizontal and vertical meridians during accommodation imaged with extended scan depth optical coherence tomography.

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    Lin Leng

    Full Text Available To determine the biometry of anterior segment dimensions of the human eye on both horizontal and vertical meridians with extended scan depth optical coherence tomography (OCT during accommodation.Twenty pre-presbyopic volunteers, aged between 24 and 30, were recruited. The ocular anterior segment of each subject was imaged using an extended scan depth OCT under non- and 3.0 diopters (D of accommodative demands on both horizontal and vertical meridians. All the images were analyzed to yield the following parameters: pupil diameter (PD, anterior chamber depth (ACD, anterior and posterior surface curvatures of the crystalline lens (ASC and PSC and the lens thickness (LT. Two consecutive measurements were performed to assess the repeatability and reproducibility of this OCT. They were evaluated by calculating the within-subject standard deviation (SD, a paired t-test, intra-class correlation coefficients (ICC and the coefficient of repeatability/reproducibility (CoR.There were no significant differences between two consecutive measurements on either horizontal or vertical meridians under both two different accommodative statuses (P>0.05. The ICC for all parameters ranged from 0.775 to 0.998, except for the PSC (0.550 on the horizontal meridian under the non-accommodative status. In addition, the CoR for most of the parameters were excellent (0.004% to 4.89%. In all the parameters, only PD and PSC were found different between the horizontal and vertical meridians under both accommodative statuses (P<0.05. PD, ACD, ASC and PSC under accommodative status were significantly smaller than those under the non-accommodative status, except that the PSC at the vertical meridian did not change. In addition, LT was significantly increased when accommodation.The extended scan depth OCT successfully measured the dimensions of the anterior eye during accommodation with good repeatability and reproducibility on both horizontal and vertical meridians. The asymmetry

  14. Fruit and seed biometry of cambuí (Myrciaria tenella O. Berg = Biometria de fruto e semente de cambuí (Myrciaria tenella O. Berg

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    Ana Veruska Cruz da Silva

    2012-12-01

    Full Text Available The cambuí tree (Myrciaria tenella O. Berg is native to Brazil and its fruits are harvested by extraction for fresh consumption in the state of Sergipe (Brazil. Because of the regional importance of the species, this work aims to characterize the cambuí fruits and seeds. The fruits were harvested mature from native trees in the Reserva do Caju Experimental Field, on Itaporanga d’Ajuda (Sergipe, Brazil, belonging to Embrapa Tabuleiros Costeiros. Two hundred fruits and seeds were biometrically analyzed. In addition, we evaluated the fruit, pulp, and seed color based on RHS Color Chart. Two different skin colors were found: 1. yellow [orange - red (group 32A] with yellow pulp [yellow - orange (group 17A]; and 2. purple [violet -blue (group 93A] with red pulp [red - purple (group 60A]. The seeds have only one color, green [yellow-green (group 152A] with dark stripes [Brown (group 200C]. The fruits mean diameter was 9.23 mm.fruit-1, and average width 8.50 mm.fruit-1. The seeds mean diameter was 5.34 mm.seed-1, mean width 6.52 mm.seed-1 and thickness 5.08 mm.seed-1. The cambuí is a little red fruit. The biometry had a high variability as expected, because it is a native species without any type of management.=Resumo - O cambuí (Myrciaria tenella O. Berg é nativo do Brasil e os frutos são colhidos por extrativismo para consumo in natura no estado de Sergipe (Brasil. Por causa da importância regional da espécie, objetivou-se com este trabalho caracterizar os frutos e sementes de cambuí. Os frutos foram colhidos maduros provenientes de plantas nativas do Campo Experimental Reserva do Caju, no município de Itaporanga d’Ajuda (Sergipe, Brasil pertencente a Embrapa Tabuleiros Costeiros. Foram analisados 200 frutos e sementes biometricamente. Além disso, caracterizou-se a cor da fruta, da polpa, e da semente com base na cartela de cores RHS. Foram identificados duas cores diferentes para a fruta: 1. de cor amarela [laranja - vermelho (grupo32A

  15. Ocular Biometry in Angle Closure

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    Mohammad Reza Razeghinejad

    2013-01-01

    Full Text Available Purpose: To compare ocular biometric parameters in primary angle closure suspects (PACS, primary angle closure glaucoma (PACG and acute primary angle closure (APAC. Methods: This cross-sectional study was performed on 113 patients including 33 cases of PACS, 45 patients with PACG and 35 subjects with APAC. Central corneal thickness (CCT, axial length (AL, anterior chamber depth (ACD and lens thickness (LT were measured with an ultrasonic biometer. Lens-axial length factor (LAF, relative lens position, corrected ACD (CACD and corrected lens position were calculated. The parameters were measured bilaterally but only data from the right eyes were compared. In the APAC group, biometric parameters were also compared between affected and unaffected fellow eyes. Logistic regression analysis was performed to identify risk factors. Results: No statistically significant difference was observed in biometric parameters between PACS and PACG eyes, or between affected and fellow eyes in the APAC group (P>0.05 for all comparisons. However, eyes with APAC had thicker cornea (P=0.001, thicker lens (P<0.0001, shallower ACD (P=0.009, shallower CACD (P=0.003 and larger LAF (P<0.0001. Based on ROC curve analysis, lower ACD, and larger LT, LAF and CCT values were associated with APAC. In the APAC group, LAF (P<0.0001 and CCT (P=0.001 were significant risk factors. Conclusion: This study revealed no significant difference in biometric characteristics in eyes with PACS and PACG. However, larger LAF and CCT were predictive of APAC.

  16. Biometria ultra-sonográfica bidimensional em tempo real do globo ocular de cães Two-dimensional real-time ultrasonic biometry of ocular globe of dogs

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    Gentil Ferreira Gonçalves

    2000-06-01

    Full Text Available Para realizar a biometria ultra-sonográfica em tempo real, foram utilizados 60 globos oculares de 30 cães oftalmologicamente sadios, com o objetivo de se obter medidas das distâncias no interior do globo ocular. Essas foram tomadas de imagens de cortes sagitais obtidas com os animais posicionados em decúbito esternal, contidos manualmente, e com a aplicação de colírio anestésico. Empregou-se transdutor setorial mecânico de 7,5 MHz sem almofada de recuo. As médias das medidas obtidas foram; para D1- distância entre a córnea e a cápsula anterior da lente 3,9 ± 0,7mm, D2- espessura da lente 6,1 ± 1,2mm, D3 diâmetro da lente 10.5 ± 1,0mm, D4- profundidade da câmara vítrea 9,1 ± 0,4mm e D5 distância córnea/retina 18,8 ± 0,9mm. Foi observada diferença significativa entre os olhos direito e esquerdo somente em D1.Sixty ocular globes of 30 health dogs were utilized to perform a real-time ultrasonic biometry, with the objective of getting distance measurement of intra-ocular structures. The measurements were taken from cross-sectional sagital image with the dogs in esternal recumbence, and manual containment, with the use of topical ocular anesthetic vehicle applied in the cornea. A 7.5 MHz transducer of a mechanical sector scanner without flotation pad was used. The measure averages were 3.9 ± 0.7mm (D1 distance between the midcornea to anterior capsule; 6.1 ± 1.2mm (D2 lens thickness; 10.5 ± 1.0mm (D3 lens diameter; 9.1 ± 0.4mm (D4 vitreous chamber depth; and 18.8 ± 0.9mm (D5 midcornea to retinal distance. Significant difference was observed among the right and left eyes only in D1.

  17. Produção e biometria do milho verde irrigado com água salina sob frações de lixiviação Production and biometry of green corn irrigated with saline water under leaching fractions

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    José F. de Carvalho

    2012-04-01

    Full Text Available O trabalho teve como objetivo avaliar o desempenho da cultura do milho em relação a produção e biometria, irrigado por gotejamento com água salina e sob diferentes frações de lixiviação em estação lisímetrica de drenagem. Os tratamentos consistiram de dois níveis de salinidade da água (CEa- 1,2 e 3,3 dS m-1 e cinco frações de lixiviação (FL- 0, 5, 10, 15 e 20% em delineamento inteiramente casualizado em esquema fatorial 2 x 5. O experimento foi conduzido na área experimental do Departamento de Tecnologia Rural da Universidade Federal Rural de Pernambuco, Recife, PE. Foram avaliados a produtividade de polpa hidratada e desidratada e de espiga com e sem palha, matéria fresca e seca da parte aérea, diâmetro de caule e altura de planta. As variáveis produção de grãos verdes, matéria seca e fresca da parte aérea apresentaram resultados semelhantes, obtendo elevados valores quando se utilizou água de 3,3 dS m-1 com a fração de lixiviação de 10%, obtendo efeito deletério com o aumento da fração de lixiviação.The objective of present study was to evaluate the corn crop in respect to the production and biometry under drip irrigation system with saline waters at lysimeter station of drainage. The treatments consisted of two levels of water salinity (CEa - 1.2 and 3.3 dS m-1 and five leaching fractions (LF - 0, 5, 10, 15 and 20%, in a completely randomized experimental design (2 x 5 factorial. The experiment was conducted at the Department of Rural Technology of the UFRPE, Recife/PE. The productivity of hydrated and dried pulp and of weight of cob with and without husks, fresh and dry matter of the aerial parts, stem diameter and height of plant were evaluated. The productivity of hydrated pulp and the fresh and dry matter of the aerial parts presented high values when water of 3.3 dS m-1 was used with leaching fraction of 10%, obtaining decreasing effect with the increase of the leaching fraction.

  18. Biometria ultrassônica no cálculo do poder dióptrico de lentes intraoculares: estudo comparativo dos métodos de contato e de imersão Ultrasound biometry and intraocular lens power calculation: comparative study of the contact and immersion techniques

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    Felipe Cortizas Ré Martins

    2009-08-01

    Full Text Available Objetivo: Comparar as medidas ecobiométricas pelos métodos de imersão e de contato. Métodos: A biometria ultrassônica foi realizada em 60 olhos, pelo mesmo examinador e com o mesmo aparelho, usando os métodos de contato e de imersão em cada olho. Resultados: A menor média do comprimento axial (23,16 mm foi obtida através do método de contato, e a maior (23,29 mm sob imersão, usando a mesma sonda ultrassônica. A média do desvio padrão entre as repetidas medidas no mesmo olho foi menor (0,02 com a técnica de imersão, e a maior (0,07 com o método de contato, diferença estatisticamente significante (pPurpose: To compare the ultrasound biometry measurements between immersion and contact techniques. Methods: The biometry was made in 60 eyes by the same examiner, using the contact and immersion techniques in each eye. Results: The lower mean axial length (23,16 mm was found in the contact technique, and the greater (23,29 was found in the immersion technique, using the same probe. The lower mean standard deviation between recurrent measures in the same eye was found in the immersion technique, and the greater in the contact procedure, and was found statistically significant (p<0,001. The Pearson's coefficients demonstrated high correlation between the two techniques, in measuring the axial length and anterior chamber depth. Conclusion: The immersion technique have shown more accuracy and reproducibility, avoiding errors in intraocular lens power calculation, and encountering the visual expectations of the patient.

  19. Biometric Authorization System using Gait Biometry

    CERN Document Server

    Sudha, L R

    2011-01-01

    Human gait, which is a new biometric aimed to recognize individuals by the way they walk have come to play an increasingly important role in visual surveillance applications. In this paper a novel hybrid holistic approach is proposed to show how behavioural walking characteristics can be used to recognize unauthorized and suspicious persons when they enter a surveillance area. Initially background is modelled from the input video captured from cameras deployed for security and the foreground moving object in the individual frames are segmented using the background subtraction algorithm. Then gait representing spatial, temporal and wavelet components are extracted and fused for training and testing multi class support vector machine models (SVM). The proposed system is evaluated using side view videos of NLPR database. The experimental results demonstrate that the proposed system achieves a pleasing recognition rate and also the results indicate that the classification ability of SVM with Radial Basis Function...

  20. Comparison and observation of ocular biometry measurements before and after retinal detachment surgery%视网膜脱离手术前后眼球生物测定值对比观察

    Institute of Scientific and Technical Information of China (English)

    谢海南; 陈穗桦; 曹茜; 余婷

    2014-01-01

    目的 通过对视网膜脱离患者行玻璃体切割硅油填充术前后、硅油取出术后传统A超眼球生物测定值的动态对比观察,统计学分析其临床意义.方法 对2009年6月至2013年3月在南京军区总医院临床学院眼科动态观察行视网膜脱离手术患者59例61只眼,对患者术前、硅油填充状态、硅油取出后30天3个时间点采用A超屈光模式动态测定眼球生物值,包括:眼轴长度、前房深度、晶状体厚度、玻璃体腔深度,对所测值进行统计学分析.结果 (1)A超测量患者术前与硅油填充状态的眼轴长度、前房深度、玻璃体腔深度差异均有统计学意义.(2)硅油填充状态与硅油取出后的眼轴长度、前房深度、玻璃体腔深度差异均有统计学意义.(3)术前与硅油取出后玻璃体腔深度差异有统计学意义.(4)术前与硅油取出后的眼轴长度、前房深度差异均无统计学意义.(5)术前与硅油填充状态、硅油填充状态与硅油取出后的晶状体厚度差异无统计学意义.结论 本研究患者术前与硅油取出后的眼轴长度、前房深度差异均无统计学意义,这对硅油取出联合白内障摘除及人工晶状体植入术的患者选择精确人工晶状体度数提供一定的帮助,证明术前A超眼球生物测定值的资料是十分有效的参考.%Objective To compare the biometry measurements of A-scan ultrasound in patients with vitrectomy and silicon oil tamponade,silicon oil removal,and analyze its clinical significance.Methods Dynamic observation was conducted in 61 eyes of 59 patients with retinal detachment by same operator.Measurements were made before operation,silicon oil-filled and silicon oil removal by Ultra scan Digital 2000 contact ultrasound A-scan (Alcon),which included axial length (AL),anterior chamber depth (ACD),Lens thickness and crystal thickness.Results There was significant difference in measurement of ALs,ACDs and crystal thickness

  1. Análise da condição corpórea, biometria externa e das vísceras do trato gastrointestinal de canários-da-terra, Sicalis flaveola braziliensis Analysis of body condition and external and gastrointestinal biometry of saffron finch, Sicalis flaveola braziliensis

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    Raul A.S. Siqueira

    2013-03-01

    Full Text Available Analisaram-se em canários-da-terra, Sicalis flaveola brasiliensis, apreendidos pelo Cetas-IBAMA/PB e que morreram logo após sua chegada, as medidas biométricas externas, condições corpóreas e de plumagem, medidas biométricas das vísceras do trato gastrointestinal (TGI, assim como a topografia visceral, a fim de fornecer dados morfológicos e caracterizar as condições em esses pássaros chegaram a esse centro de triagem. A topografia visceral estava em consonância com a de periquitos e avestruz, a exceção que essa última espécie apresenta um ceco. Verificou-se que há relação entre as condições corpóreas desfavoráveis e a perda de plumagem. Conclui-se, que S. flaveola braziliensis possui medidas biométricas em consonância á de outros Passeriformes, contudo possui divergências para aves do mesmo gênero e poucas diferenças biométricas entre machos e fêmeas. Através do estudo, verifica-se que as condições corpóreas de animais traficados devem ser consideradas nos centros de triagem, a fim de se fazer um melhor manejo nutricional e/ou clínico, diminuindo a mortalidade.Forty-one saffron finch, Sicalis flaveola brasiliensis, were studied regarding the external biometry, corporeal and plumage conditions, gastrointestinal tract (GIT biometry, and the visceral topography, in order to provide morphological data and to characterize the condition in which these birds came to the wild animal screening Center. The visceral topography was similar to the found in parakeets and ostriches; however the last have a cecum. There was also relationship between the unfavorable body conditions and the loss of feathers. It was concluded that S. flaveola braziliensis has biometric measurements similar to other Passeriformes, however with differences to birds of the same gender, and few biometric differences among males and females. The results demonstrate that the corporal conditions of trafficked animals should be considered in wild

  2. Eficácia do eugenol extraído da planta Eugenia aromatica como anestésico para realização de biometrias em adultos de tilápia do Nilo (Oreochromis niloticus = Efficacy of eugenol extracted from the plant Eugenia aromatica as an anesthetic for the biometry procedures in Nile tilapia (Oreochromis niloticus adults

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    Antonio Glaydson Lima Moreira

    2010-10-01

    Full Text Available Os anestésicos figuram como poderosa ferramenta na aquicultura, atuando na redução do estresse e mortalidade usualmente causados pelo manejo. O objetivo deste trabalho foi avaliar o efeito de diferentes concentrações de eugenol em adultos de tilápia e determinar a concentração ideal para realização de uma biometria. Foram avaliadas seis concentrações (30, 60, 120, 180, 240 e 300 mg L-1. Para cada tratamento, 12 peixes (comprimento médio: 32,7 ± 3,0; peso médio: 557,0 ± 160 g, foram imersos individualmente na solução anestésica durante 10 min. Durante a indução anestésica, foram monitorados todos os estágios de anestesia e ao atingir o estágio de anestesia profunda, foi monitorado o número de batimentos operculares durante o minuto seguinte. Após a indução anestésica, os peixes foram transferidos para aquário contendo água sem anestésico e aferido o tempo de recuperação. A concentração de 60 mg L-1 necessitou de maior tempo para atingir o estágio desejado de anestesia profunda (206,3 segundos, enquanto a concentração de 300 g L-1 atingiu este estágio mais rapidamente (77,8 segundos. Os resultados obtidos sugerem que a concentração ideal de eugenol para realização de uma biometria é de 120 mg L-1, e, que o aumento da dosagem do anestésico, implica na diminuição dos batimentos operculares.Anesthetics represent a powerful tool in aquaculture, working to reduce stress and mortality commonly caused by handling. The objective this work was evaluate the effect of various concentrations of eugenol in adults of Nile tilapia and determine its optimal concentration for biometry procedures. Six concentrations (30, 60, 120, 180, 240 e 300 mg L-1 were tested. For each treatment, 12 fishes (average length: 32.7 ± 3.0; average weight: 557.0 ± 160 g were individually immersed in anesthetic solution for 10 min. All stages of anesthesia were monitored during anesthetic induction, and upon profound anesthesia the

  3. Biometria testicular, eletroejaculação e características seminais de caititus, Tayassu tajacu Linnaeus, 1758 (Mammalia, Artiodactyla, Tayassuidae mantidos em cativeiro na Amazônia Oriental Testicular biometry, electroejaculation and seminal features of captive collared peccaries (Tayassu tajacu Linnaeus, 1758, Artiodactyla, Tayassuidae raised in the Eastern Amazon

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    Priscila Reis Kahwage

    2010-12-01

    Full Text Available Estudos relacionados à obtenção e avaliação de sêmen de Tayassu tajacu são escassos, sendo necessárias pesquisas a respeito. Os objetivos do estudo foram avaliar a biometria testicular de caititus adultos cativos, testar a eficiência da eletroejaculação para obtenção de sêmen e avaliar suas características seminais ao longo do ano. Procedeu-se à eletroejaculação em oito animais adultos e as amostras de sêmen colhidas foram avaliadas quanto às características físicas e morfológicas. Os animais tinham testículo esquerdo com 3,8 ± 0,4 cm X 2,6 ± 0,3 cm e 2,3 ± 0,2 de consistência, e testículo direito com 3,8 ± 0,5 cm X 2,7 ± 0,3 cm e 2,3 ± 0,2 de consistência. A taxa de sucesso nas colheitas foi de 75,21%. O sêmen possuiu: volume 0,81 ± 0,86 mL, concentração 137,44 ± 153 x 106 sptz mL-1, pH 7,92 ± 0,73, motilidade 52,66 ± 28,79%, vigor 2,2 ± 0,8, integridade de membrana plasmática 55,84 ± 28,55%, defeitos maiores 22,87 ± 12,93%, defeitos menores 9,11 ± 5,88% e defeitos totais 31,52 ± 13,81%. Os animais apresentaram simetria testicular, a eletroejaculação se mostrou eficiente para a obtenção de ejaculados em caititus e as flutuações observadas na produção seminal não foram suficientes para caracterizá-los como animais de reprodução sazonal.Research development in semen collection and sperm evaluation of Tayassu tajacu are necessary. The aims of this research were to evaluate testicular biometry of captive collared peccaries, test electroejaculation for semen collection and evaluate seminal characteristics during the year. Eight animals were submitted to electroejaculation and semen samples were evaluated according their physical and morphological characteristics. Left testicles measured 3.8 ± 0.4 cm X 2.6 ± 0.3 cm and presented 2.3 ± 0.2 of consistence, while right testicles were 3.8 ± 0.5 cm X 2.7 ± 0.3 cm and presented 2.3 ± 0.2 of consistence. Success rate on semen collections

  4. Dorsal Hand Vein Biometry by Independent Component Analysis

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    V.H.Yadav

    2012-07-01

    Full Text Available Biometric authentication provides a high security and reliable approach to be used in security access system. Personal identification based on hand vein patterns is a newly developed recent year. The pattern of blood veins in the hand is unique to every individual, even among identical twins, and it do notchange over time. These properties of uniqueness, stability and strong immunity to forgery of the vein patterns make it a potentially good biometric trait which offers greater security and reliable features for personal identification. In this study, we have used the BOSPHORUS hand vein database which has been taken under a source of NIR infrared radiation. For feature extraction we applied appearance based method ICA which produces independent components. To control over the number of independent component we preprocessed data by PCA before applying ICA, and gives good experimental results.

  5. Fruit biometry and seed germination of Syagrus romanzoffiana (Cham. Glassm

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    Flora Goudel

    2013-03-01

    Full Text Available Syagrus romanzoffiana (Cham. Glassm. is a species native to Brazil that is of ecological and aesthetic importance. This study aims to describe the biometric characteristics of S. romanzoffiana fruits and to assess the effects that treatments meant to overcome dormancy and partial drying have on seed germination. For biometric characterization, each repetition consisted of 50 fruits from eight clusters (total, 400 fruits. To evaluate methods for overcoming dormancy, seeds representative of populations were treated by perforation of the operculum; perforation of the operculum and immersion in water for 24 hours; cracking; exposure to fire for three minutes; and non-removal of fibers. There was also a control group. In a second experiment, seeds were partially dried. We determined the proportional moisture content of newly harvested seeds (20.2% and dried them down to moisture contents of 15.5% and 12.7%. All seeds were subjected to a germination test at 30ºC. The fruits showed biometric variations, with an average of 21.7 mm in longitudinal diameter and 19.7 mm in polar diameter, and a fresh mass of 5.61 g, of which 59.29% was pulp. The highest germination rates and vigor to overcome dormancy occurred after the operculum was perforated and the seeds were soaked in water for 24 hours. The results of the partial drying treatments did not differ sufficiently to discourage dormancy in any significant manner.

  6. Biometry of face and brain in fetuses with trisomy 21.

    Science.gov (United States)

    Guihard-Costa, Anne-Marie; Khung, Suonavy; Delbecque, Kathy; Ménez, Françoise; Delezoide, Anne-Lise

    2006-01-01

    The aim of this study was to specify the early setting of the particular craniofacial morphology in Down syndrome during the fetal period from data based on postmortem examinations. The study included 1277 fetuses at 15-38 gestational weeks (GW): 922 control fetuses and 355 fetuses with trisomy 21, selected from fetopathology units in Paris. Body weight (BW) and nine dimensions of the face, skull, and brain were recorded: the outer and inner canthal distances (OCD, ICD), biparietal diameter (BPD), head circumference (HC), brain weight (BrW), occipitofrontal diameters of left and right hemispheres (lOFD, rOFD), weight of the infratentorial part of the brain (IBW), and maximal transversal diameter of the cerebellum (CTD). Four ratios were computed: BPD/HC, OCD/BPD, BrW/BW, IBW/BrW. Differences between trisomic fetuses and control fetuses were tested by age interval. Results showed that BW, rOFD, and lOFD were lower in trisomic fetuses as early as 15 GW. Cerebellar hypoplasia included lower IBW and CTD in trisomic fetuses. The IBW/BrW ratio was higher in trisomic fetuses, showing that growth restriction affected the infratentorial part of the brain less than the supratentorial part. Early brachycephaly was found in trisomic fetuses, with higher values of BPD and BPD/HC from 15 GW. ICD and OCD were not significantly different in the two groups, but OCD/DBP ratio was lower in trisomic fetuses. These results confirm the early phenotypical expression of trisomy 21 on craniofacial morphology, associated with a marked restriction of brain growth, especially in the supratentorial part. PMID:16326987

  7. Biometrie et croissance des jeunes crevettes Penaeus de la Guadeloupe

    NARCIS (Netherlands)

    Rojas-Beltrán, Ricardo

    1981-01-01

    Les plus importantes relations biométriques pour les juvéniles de Penaeus (Melicertus) aztecus subtilis, P. (M.) brasiliensis et P. (M.) duorarum notialis de la mangrove guadeloupéenne, ont été calculées. Les relations concernant les tailles (longueur céphalothoracique – longueur totale – longueur a

  8. On the morphology, biometry and biogeography of Lamtopyxiscallistoma (Amoebozoa: Arcellinida).

    Science.gov (United States)

    Todorov, Milcho

    2015-01-01

    The ultra-structure of the shell and the morphometric variability of soil inhabiting testate amoeba Lamtopyxiscallistoma from Madagascar were studied by using light- and scanning electron microscopy. The biometrical characteristic of the species was made on the basis of 75 specimens measured. In addition to the diameter of the shell, six other shell characters were described biometrically for the first time. The analysis of the variation coefficients shows that the studied population of L.callistoma is comparatively homogeneous and almost all measured characters are weakly to moderate variable (CV less than 10%). Scanning electron microscopy (SEM) studies on the shell ultra-morphology show that it has a smooth apertural surface with a thick layer of porous and fibrous organic cement and a rough dorsal surface composed of bigger and angular pieces of quartz. The shell wall has a thickness of about 5-6 µm and is composed of three layers. Unlike the previously accepted opinion that species is characterized by the presence of four teeth, this study shows that population of L.callistoma from Madagascar is comprised of both, specimens with four teeth and specimens with three teeth, in ratio of about 60% to 40%. Taking into account the restricted geographical distribution, large sizes and characteristic apertural morphology of L.callistoma it is assumed that this species, like some bryophilic 'Nebelas' with circumaustral distribution (e.g. Apoderavas, Alocoderacockayni, Certesellacertesi, Certesellamartiali, etc.), can be used as an example that in free-living microbial eukaryotes 'not everything is everywhere'.

  9. 8-Valent Fuzzy Logic for Iris Recognition and Biometry

    CERN Document Server

    Popescu-Bodorin, N; Motoc, I M; 10.1109/ISCIII.2011.6069761

    2011-01-01

    This paper shows that maintaining logical consistency of an iris recognition system is a matter of finding a suitable partitioning of the input space in enrollable and unenrollable pairs by negotiating the user comfort and the safety of the biometric system. In other words, consistent enrollment is mandatory in order to preserve system consistency. A fuzzy 3-valued disambiguated model of iris recognition is proposed and analyzed in terms of completeness, consistency, user comfort and biometric safety. It is also shown here that the fuzzy 3-valued model of iris recognition is hosted by an 8-valued Boolean algebra of modulo 8 integers that represents the computational formalization in which a biometric system (a software agent) can achieve the artificial understanding of iris recognition in a logically consistent manner.

  10. Morphology and biometry of the thymus in ostrich (Sthruthio camelus

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    Cheston Cesar Honorato Pereira

    2016-05-01

    Full Text Available This work studied the anatomy of the thymus in 30 young ostriches (13 males and 17 females, 10 to 20 days old that were fixed in an aqueous solution of 10% formaldehyde. Chains of thymic lobes, arranged linearly and parallel, were located in the third distal part of the ventral region of the neck from the eleventh to the fifteenth cervical vertebra, which relates to the vagus nerve and jugular vein. The number of lobes varied from 1 to 3 and 1 to 2 in the right and left antimeres, respectively. In the right antimere, the average dimensions of the lobes were 2.09 × 0.71 × 0.41 cm for the cranial lobe, 0.69 × 0.38 × 0.27 cm for the middle lobe and 55 × 0.33 × 0.29 cm for the caudal lobe. In the left antimere, the average dimensions were 2.14 × 0.71 × 0.37 cm for the cranial lobe and 0.60 × 0.31 × 0.22 cm for the caudal lobe. The morphology and thymus biometrics showed well-defined traits, having common attributes, such as holotopy, skelotopy, syntopy and idiotopy, which characterized the species of this study.

  11. Foetal biometry in polyhydramnios: Does femur length fall behind?

    Science.gov (United States)

    Ipek, Ali; Idilman, Ilkay S; Kurt, Aydın; Cay, Nurdan; Unal, Ozlem; Erdogan, Beyza Doganay; Keskin, Huseyin Levent; Arslan, Halil

    2016-01-01

    We aimed to identify the growth patterns in polyhydramnios, and therefore evaluated 108 singleton pregnancies complicated with polyhydramnios according to the changes in biparietal diameter (BPD), abdominal circumference (AC) and femur length (FL) percentiles. The pregnancy outcomes according to the growth features were analysed. In the study population, BPD and AC percentiles exhibited a significant increase (p = 0.023 and 0.05, respectively), although FL percentiles showed a significant decrease (p = 0.006) according to the changes in third trimester relative to second trimester. In the overgrown group (n = 52), the FL/BPD ratio was lower (p polyhydramnios. However, we observed a shorter FL and a lower FL/BPD ratio without associated skeletal dysplasia in overgrown foetuses. PMID:26467094

  12. TWO-DIMENSIONAL REAL-TIME ULTRASONIC BIOMETRY OF OCULAR GLOBE OF DOMESTIC CATS. BIOMETRÍA ULTRASÓNICA BIDIMENSIONAL EN TIEMPO REAL DEL BULBO OCULAR DE GATOS. BIOMETRIA ULTRA-SONOGRÁFICA BIDIMENSIONAL EM TEMPO REAL DE BULBO OCULAR DE GATOS DOMÉSTICOS.

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    Ney Luis Pippi

    2009-09-01

    Full Text Available The eye is an ideal organ for the ultrassonographic examination, because it is of easy access and will count to some reflexives surfaces or interfaces. For the ultrassonographic examination of the ocular bulb high frequencies are necessary to delineate the tissues adequately. For the attainment of the measures 60 eyes of 30 cats had been used, where if it got sagittal cuts and transversal with microconvex transducer of 7.5MHz. They had been affected measured from the cornea in direction the retina. They had been registered measured of the distance between the cornea and the anterior capsule of the lens (D1, thickness of the lens (D2, diameter of the lens (D3, distance between the posterior capsule of the lens until the retina (D4, and distance between the cornea and the retina (D5. The measures had been grouped and gotten average, from the averages were applied a statistical test of variance analysis, with level of significance of 5%, to verify the homogeneity of the measures. The extreme one of healthful ocular bulbs of domestic cats produces images with average measures of 0.39cm for D1, 0.68cm for D2, 1.25cm for D3, 0.78cm for D4 and 1.86cm for D5. It was not observed significant difference between the sex, applied ages, weights or cuts.

    KEY WORDS: Biometry, cats, ophtalmology, ultra-sonography. El ojo es un órgano ideal para la examinación sonográfica, porque está de acceso fácil y contará a algunas superficies reflexivas o interfaces. Para la examinación sonográfica del bulbo del ojo los de alta frecuencia son necesarios delinear los tejidos finos adecuadamente. Para el logro de las medidas 60 ojos de 30 gatos habían sido utilizados, donde si consiguió cortes sagitales y transversales con el transductor microconvexo de 7,5MHz. Habían sido afectados midieron de la córnea en la dirección la retina. Habían sido colocados midieron de la distancia entre la córnea y la cápsula anterior de la lente (D1, el grueso de la

  13. Biometrias óptica e ultra-sônica: comparação dos métodos usados para o cálculo da lente intra-ocular acomodativa Optical and ultrasound biometry: comparision between the two methods used for the calculation of accommodative intraocular lens

    Directory of Open Access Journals (Sweden)

    Filipe de Oliveira

    2004-12-01

    reproducibility, level of agreement and correlation of two ultrasonic biometers and one optical biometer for the calculation of accommodative intraocular lens. METHODS: Cataract patients were submitted to the examination with 3 different biometers (IOLMaster, Axis II and Humphrey Mod. 820 before the implant of the C&C Vision AT-45 accommodative silicone intraocular lens. The Axis II biometer was used for both contact and immersion biometry. Axial length, anterior chamber depth and keratometry were the analyzed biometric parameters. RESULTS: Thirty-four patients from 53 to 90 years old (mean 70.6 y were submitted to the examination with the three different biometers. The lowest mean axial length (23.12 mm was obtained with the Axis II/contact and the highest (23.21 mm with the Humphrey biometer. The lowest mean anterior chamber depth (2.97mm was obtained with the Humphrey and the highest (3.10mm with the IOLMaster. Reproducibility for axial length was high for all the biometers tested (coefficient of variation: 3.02% for Humphrey and Axis II / immersion; 3.07 % for Axis II/contact and 3.19% for IOLMaster. All biometers presented nearly equal results of the analyzed parameters (99.01% for axial length and 94.77% for anterior chamber depth. Pearson's coefficient showed a high correlation between the biometers, regarding the axial length and anterior chamber depth measurements. CONCLUSION: The devices used in this study showed excellent reproducibility and high level of agreement and of the axial length, anterior chamber depth and keratometry measurements, making it possible to reduce errors of intraocular lens calculation and visual insatisfaction after cataract surgery.

  14. Intraocular lens power calculation by measuring axial length with partial optical coherence and ultrasonic biometry

    OpenAIRE

    Beatriz Machado Fontes; Bruno Machado Fontes; Elaine Castro

    2011-01-01

    PURPOSE: To compare the achieved refractive outcomes of patients undergoing cataract surgery with intraocular lens (IOL) power calculation performed by conventional immersion ultrasound (US) or partial coherence interferometry (PCI). METHODS: Prospective, comparative case series. Patients undergoing cataract surgery were randomly divided in two groups with regard to the IOL power calculation method. Group 1 had calculations performed by PCI (IOL Master; Carl Zeiss Meditec), while US was used ...

  15. On the morphology, biometry and biogeography of Lamtopyxis callistoma (Amoebozoa: Arcellinida

    Directory of Open Access Journals (Sweden)

    Milcho Todorov

    2015-01-01

    Full Text Available The ultra-structure of the shell and the morphometric variability of soil inhabiting testate amoeba Lamtopyxis callistoma from Madagascar were studied by using light- and scanning electron microscopy. The biometrical characteristic of the species was made on the basis of 75 specimens measured. In addition to the diameter of the shell, six other shell characters were described biometrically for the first time. The analysis of the variation coefficients shows that the studied population of L. callistoma is comparatively homogeneous and almost all measured characters are weakly to moderate variable (CV less than 10%. Scanning electron microscopy (SEM studies on the shell ultra-morphology show that it has a smooth apertural surface with a thick layer of porous and fibrous organic cement and a rough dorsal surface composed of bigger and angular pieces of quartz. The shell wall has a thickness of about 5-6 µm and is composed of three layers. Unlike the previously accepted opinion that species is characterized by the presence of four teeth, this study shows that population of L. callistoma from Madagascar is comprised of both, specimens with four teeth and specimens with three teeth, in ratio of about 60% to 40%. Taking into account the restricted geographical distribution, large sizes and characteristic apertural morphology of L. callistoma it is assumed that this species, like some bryophilic ‘Nebelas’ with circumaustral distribution (e.g. Apodera vas, Alocodera cockayni, Certesella certesi, Certesella martiali, etc., can be used as an example that in free-living microbial eukaryotes ‘not everything is everywhere’.

  16. Individual variation related to testicular biometry and semen characteristics in collared peccaries (Tayassu Tajacu Linnaeus, 1758).

    Science.gov (United States)

    Peixoto, G C X; Silva, M A; Castelo, T S; Silva, A M; Bezerra, J A B; Souza, A L P; Oliveira, M F; Silva, A R

    2012-10-01

    The aim of this research was to study the individual variation with regard to the morphometry of the testes evaluated by ultrasonography and semen characteristics and to verify the existence of relationship between these variables in collared peccaries. In addition, the testes of the animals were evaluated by histology in order to determine the proportion occupied by the seminiferous tubules. A total of 52 ejaculates were obtained from ten adult specimens that had been restrained by anesthesia. The testicular measurements (length, height, and width) were performed by ultrasonography, and the testicular volume was calculated according to Lambert's formula. The scrotal circumference was measured by encircling the thickest portion of the testicle with a graduated nylon tape. The semen was collected by electroejaculation. Testicular fragments were analyzed through classic histology for the determination of the area occupied by the seminiferous tubules. The results show a great amount of individual variation with regard to testicular morphometry and semen characteristics. No significant correlations were obtained between testicular measurements and semen characteristics. The histometric analysis revealed that 67.8% of the testes are occupied by seminiferous tubules. Results show that the measurement of testicular dimensions does not serve as an indicator of the quality of semen obtained by electroejaculation in collared peccaries, as there is no correlation between testicular morphometry and semen characteristics in this species that presents large variations among individuals. PMID:22964034

  17. Seeds and plantlets of Myrciaria dubia “camu-camu”: biometry, germination, and initial growth

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    Anderson E. Medina Bardales

    2014-06-01

    Full Text Available The objectives were to determine seed biometrics, recording cellular respiration in the imbibition process, evaluate the effect of inducing chemicals in germination and early growth analysis. Cellular respiration during imbibition was measured by reduction of methylene blue and Janus Green B. The inductor effect of five chemical compounds in germination was evaluated. Initial growth was recorded by stereoscopic. Results showed that the seeds have an average weight of 520 ± 172 mg, length of 13.50 ± 1.76 mm, width of 10.61 ± 1.14 mm, and thickness of 4.68 ± 0 62 mm. These variables showed significant correlations (r of 0.494 to 0.897 and p 90% and 65% respectively. Seedling initial growth consisted of six stages and occurred over a period of 22 days after radicle emergence. In conclusion, M. dubia seeds show wide variation in their biometrics (weight, length, width and thickness, but show significant correlations with each other. Likewise, seeds are metabolically active in imbibition process, and germination is induced by sodium nitrite and potassium cyanide. Furthermore, seedling initial growth to occur over a period of 22 days after emergence of the radicle and consists of six distinct stages.

  18. K výročí úmrtí zakladatele biometrie

    OpenAIRE

    Kalina, J. (Jan)

    2011-01-01

    Karl Pearson (1857-1936) was a versatile English scientist who founded biometrics and was the first to apply methods of mathematical statistisc to biology. The paper describes Pearson's contribution to biometrics and mathematical statistics and discusses the contents of current biometrics as a self-standing scientific discipline.

  19. [Biometry and assessment of the levator hiatus by three-dimensional pelvic floor ultrasound].

    Science.gov (United States)

    Dimitrov, R

    2013-01-01

    Images of the levator hiatus in 40 nulliparous, 40 asymptomatic parous women and 40 women with pelvic organ prolapse were obtained by transperineal/translabial three-dimentional ultrasonography of the pelvic floor. Volumes were taken at rest and during squeezing. Recontructed images of the levator hiatus at the plane of minimal dimentions were obtained by off-line processing of the stored volumes. The transverse, the longitudinal diameter and the area of the levator hiatus were measured at rest and during squeezing in the three groups. Qualitative assessment of the shape and the symmetry of the levator hiatus at rest was made, too. The average hiatal dimentions (transverse, longitudinal diameter and hiatal area) measured at rest in the three groups were: 35.8 mm, 43.1 mm and 11.84 cm2 in the nulliparous; 43.6 mm, 47.1 mm and 15.1 cm2 in the asymptomatic parous women and 50.5 mm, 57.2 mm and 25.8 cm2 in women with pelvic organ prolapse. Nulliparous women achieved the greatest reduction of hiatal area during squeezing (by 21% average). In asymptomatic parous women the hiatal area reduction averaged 12% while in women with pelvic organ prolapse the average reduction was by 4% only. Levator injury was detected in 7.5% of the asymptomatic parous women and in 22.5% of the women with pelvic organ prolapse. Left-sided injuries predominated. Three-dimentional ultrasound provides easy and high-quality imaging of the pubovisceral miscles for the objective assessment of the levator hiatus in static and dynamic conditions. PMID:23807973

  20. Biometry and diversity of Arabica coffee genotypes cultivated in a high density plant system.

    Science.gov (United States)

    Rodrigues, W N; Tomaz, M A; Ferrão, M A G; Martins, L D; Colodetti, T V; Brinate, S V B; Amaral, J F T; Sobreira, F M; Apostólico, M A

    2016-01-01

    The present study was developed to respond to the need for an increase in crop yield in the mountain region of Caparaó (southern Espírito Santo State, Brazil), an area of traditional coffee production. This study aimed to analyze the diversity and characterize the crop yield of genotypes of Coffea arabica L. with potential for cultivation in high plant density systems. In addition, it also aimed to quantify the expression of agronomic traits in this cultivation system and provide information on the genotypes with the highest cultivation potential in the studied region. The experiment followed a randomized block design with 16 genotypes, four repetitions, and six plants per experimental plot. Plant spacing was 2.00 x 0.60 m, with a total of 8333 plants per hectare, representing a high-density cultivation system. Coffee plants were cultivated until the start of their reproductive phenological cycles and were evaluated along four complete reproductive cycles. Genotypes with high crop yield and beverage quality, short canopy, and rust resistance were selected. C. arabica genotypes showed variability in almost all characteristics. It was possible to identify different responses among genotypes grown in a high plant density cultivation system. Although the chlorophyll a content was similar among genotypes, the genotypes Acauã, Araponga MG1, Sacramento MG1, Tupi, and Catuaí IAC 44 showed a higher chlorophyll b content than the other genotypes. Among these, Sacramento MG1 also showed high leafiness and growth of vegetative structures, whereas Araponga MG1, Pau-Brasil MG1, and Tupi showed high fruit production. In addition, Araponga MG1 had also a higher and more stable crop yield over the years.

  1. Ocular biometry and central corneal thickness in children: a hospital-based study

    Directory of Open Access Journals (Sweden)

    Adem Gul

    2014-06-01

    Full Text Available Objetivo: Investigar a distribuição do comprimento axial, profundidade da câmara anterior, espessura do cristalino, profundidade da câmara vítrea e espessura corneal central em crianças em diferentes faixas etárias. Métodos: Foram estudados 364 olhos de 182 crianças entre 1 e 12 anos de idade. O comprimento axial, a profundidade da câmara anterior , a espessura do cristalino e a profundidade da câmara vítrea foram medidos por biometria ultrassônica. A espessura corneal central foi medida por paquimetria ultrassônica em todas as crianças. Resultados: A idade média foi de 6,54 ± 3,42 anos. O comprimento axial foi 20,95 mm no grupo de 1-2 anos de idade e 22,95 mm no grupo de 11-12 anos de idade. A espessura corneal central foi 556 µm no grupo de 1-2 anos de idade e 555 µm no grupo de 11-12 anos de idade. A profundidade da câmara anterior média e profundidade da câmara vítrea aumentou com a idade (3,06 mm a 3,44 mm de profundidade da câmara anterior, 13,75 mm a 15,99 mm de profundidade da câmara vítrea e da espessura do cristalino diminuiu com o aumento da idade (3,67 mm a 3,51 mm. Conclusões: Em nosso estudo, os valores do comprimento axial aumentou com a idade e atingiu os níveis adultos aos 9-10 anos de idade. A espessura do cristalino diminuiu gradualmente até os 12 anos de idade. As medições de espessura corneal central não seguiu um algoritmo linear.

  2. Relationships between fetal biometry, maternal factors and birth weight of purebred domestic cat kittens.

    Science.gov (United States)

    Gatel, L; Rosset, E; Chalvet-Monfray, K; Buff, S; Rault, D N

    2011-12-01

    The goal of this study was to evaluate the relation between kittens' birth weights and biometrical factors from the kittens and the mother during pregnancy. Knowing fetal birth weight could help in detecting abnormalities before parturition. A Caesarean-section or a postnatal management plan could be scheduled. Consequently, the neonatal mortality rate should be decreased. We used ultrasonographic measurements of femur length (FL) or fetal biparietal diameter (BPD), pregnancies, and maternal factors to obtain a model of prediction. For this purpose, linear mixed-effects models were used because of random effects (several fetuses for one queen and a few paired measurements) and fixed effects (litter size, pregnancy rank, weight, wither height, and age of the queen). This study was performed in 24 purebred queens with normal pregnancies and normal body conditions. Queens were scanned in the second half of pregnancy, using a micro-convex probe. They gave birth to 140 healthy kittens whose mean birth weight was 104 g (ranged 65 to 165 g). No correlation between the birth weight and the age of the queen, as a maternal factor alone, was observed. But the birth weight was found to be inversely proportional to the pregnancy rank and the litter size. Moreover, birth weight increased when the weight and wither height of queen increased. BPD and FL increased linearly during pregnancy so a model was used to estimate mean birth weight. Using this model, we found a correlation between mean birth weights and an association of parameters: maternal factors (wither height and age), and litter size. PMID:21820718

  3. Biometry, histology, and morphometry of the digestive system of wild crab-eating fox (Cerdocyon thous

    Directory of Open Access Journals (Sweden)

    Andreíza Ramos Heleno

    2011-12-01

    Full Text Available The crab-eating fox (Cerdocyon thous is found throughout Brazil. It has a nocturnal habit and can be seen on roadsides, where it looks for remains of run over animals and, therefore, it is also a victim of roadkill. This study aimed to characterize the macro and microscopic anatomy of the digestive system of the crab-eating fox. It helps to carry out medical and surgical procedures, besides important information on the feeding strategies, especially for wild individuals needing veterinary care after rescue in cases of running over, burnings, and floods caused by the filling of hydroelectric reservoir lakes or even in projects on captive breeding and restocking. Samples were collected from the digestive system of three wild animals in the region of Guarapuava-PR region. The crab-eating foxes under study were longer than the average reported for the species, had a shorter intestine, and a lower small intestine/body length ratio than other carnivores, besides other anatomical and histological characteristics different from those found in the literature on carnivores.

  4. Biometry and diversity of Arabica coffee genotypes cultivated in a high density plant system.

    Science.gov (United States)

    Rodrigues, W N; Tomaz, M A; Ferrão, M A G; Martins, L D; Colodetti, T V; Brinate, S V B; Amaral, J F T; Sobreira, F M; Apostólico, M A

    2016-01-01

    The present study was developed to respond to the need for an increase in crop yield in the mountain region of Caparaó (southern Espírito Santo State, Brazil), an area of traditional coffee production. This study aimed to analyze the diversity and characterize the crop yield of genotypes of Coffea arabica L. with potential for cultivation in high plant density systems. In addition, it also aimed to quantify the expression of agronomic traits in this cultivation system and provide information on the genotypes with the highest cultivation potential in the studied region. The experiment followed a randomized block design with 16 genotypes, four repetitions, and six plants per experimental plot. Plant spacing was 2.00 x 0.60 m, with a total of 8333 plants per hectare, representing a high-density cultivation system. Coffee plants were cultivated until the start of their reproductive phenological cycles and were evaluated along four complete reproductive cycles. Genotypes with high crop yield and beverage quality, short canopy, and rust resistance were selected. C. arabica genotypes showed variability in almost all characteristics. It was possible to identify different responses among genotypes grown in a high plant density cultivation system. Although the chlorophyll a content was similar among genotypes, the genotypes Acauã, Araponga MG1, Sacramento MG1, Tupi, and Catuaí IAC 44 showed a higher chlorophyll b content than the other genotypes. Among these, Sacramento MG1 also showed high leafiness and growth of vegetative structures, whereas Araponga MG1, Pau-Brasil MG1, and Tupi showed high fruit production. In addition, Araponga MG1 had also a higher and more stable crop yield over the years. PMID:26909972

  5. Uptake of propranolol, a cardiovascular pharmaceutical, from water into fish plasma and its effects on growth and organ biometry

    International Nuclear Information System (INIS)

    Pharmaceuticals in the environment (PIE) are of importance since these compounds are designed to affect biological receptors/enzymes that are often conserved across vertebrate families. Across-species extrapolation of these therapeutic targets suggests potential for impacting amphibia and fish in the aquatic environment. Due to the scarcity of relevant ecotoxicological data, the long-tem impact of PIE remains a research question. Efficient use of mammalian data has been proposed to better understand and predict the potential for a given pharmaceutical to impact the environment. Using a model cardiovascular pharmaceutical (propranolol, a non-specific β1/β2-adrenergic antagonist), the hypothesis that mammalian data can be used to predict toxicity in fish was tested. Rainbow trout (Oncorhynchus mykiss (Walbaum)) have β-adrenergic signalling mechanisms analogous to human cardiovascular receptors that respond to pharmacological doses of agonists and antagonists. Trout absorbed propranolol from water such that after 40 days of exposure, the linear relationship was [plasma] = 0.59[water] (n = 31, r = 0.96). Growth rate was affected only at very high aqueous concentrations (10-day growthNOEC = 1.0 and growthLOEC = 10 mg/l). Growth recovered with time (40-day growthNOEC = 10 mg/l), suggesting possible adaptation to the pharmaceutical, although the internal plasma concentration in trout exposed to 10 mg propranolol/l of water was higher than the mammalian therapeutic plasma concentration. Additional endpoints suggested subtle changes of liver and heart size at much lower concentrations may have occurred, although these were not concentration-related. There was, however, a dose-dependent effect upon overall body condition. The trout plasma concentrations at these effective aqueous concentrations fell within the range of mammalian effective plasma concentrations, supporting the potential for developing 'read-across' from mammalian pharmacology safety data to fish ecotoxicology. Despite these effects at relatively high concentrations, propranolol is not expected to pose a risk to fish at the concentrations considered to be present in the aquatic environment.

  6. Full anterior segment biometry with extended imaging range spectral domain optical coherence tomography at 1340 nm

    OpenAIRE

    Li, Peng; Johnstone, Murray; Ruikang K Wang

    2014-01-01

    Abstract. We demonstrate an extended-imaging-range anterior-segment optical coherence tomography (eAS-OCT) system for the biometric assessment of full AS in human eye. This newly developed eAS-OCT operating at 1340-nm wavelength band is simultaneously capable of an imaging speed of 120 kHz A-line scan rate, an axial resolution of 7.2 μm, and an extended imaging range of up to 16 mm in air. Imaging results from three healthy subjects and one subject with a narrow-angle demonstrate the instrume...

  7. Biometrie sexual and ontogenetic dimorphism on the marine catfish Genidens genidens (Siluriformes, Ariidae in a tropical estuary

    Directory of Open Access Journals (Sweden)

    Larissa G Paiva

    2015-11-01

    Full Text Available This paper aims to study the ontogenetic sexual dimorphism of Genidens genidens in Guanabara Bay, southeastern coast of Brazil. Altogether 378 specimens were anayzed (233 females and 145 males with total length ranging from 13.3 to 43.5 cm. Specimens were measured for 12 body measurements, sex was identified and maturity stages were recorded and classified. Pearson's linear correlation reveled a significant positive correlation between total length and all other body measures, except for base adipose fin, mouth depth and eye depth for immature females. Analyses nested PERMANOVA desing showed significant differences between maturity stages for each sex, between sexes considering or not maturity stages, indicating a variation in morphometric characteristics driven by sexual dimorphism. Differences among all maturity stages were also found, indicating an ontogenetic morphological difference. But immature individuals didn't differ between sexes indicating that differentiation patterns starts with sexual development. The most important measures differing males and females were related to head characteristics, which appears to be key parameters to evaluate sexual differences. Due to male incubation of fertilized eggs and juvenile individuals <59 mm in their oral cavity, head measures are proposed to be sex dimorphism not related to reproduction, but with post reproductive fase due to ecological and biological needs.

  8. Ocular biometry in the adult population in rural central China: a population-based, cross-sectional study

    Institute of Scientific and Technical Information of China (English)

    Ting; Fu; Yin-Wei; Song; Zhi-Qi; Chen; Jun-Wen; He; Kun; Qiao; Xu-Fang; Sun; Hong; Zhang; Jun-Ming; Wang

    2015-01-01

    ·AIM: To describe the distribution and determinants of ocular biometric parameters and to ascertain the relative importance of these determinants in a large population of adults in rural central China.·METHODS: A population-based, cross-sectional study performed in rural central China included 1721 participants aged 40 or more years. Ocular biometrical parameters including axial length(AL), anterior chamber depth(ACD), radius of corneal curvature(K) and horizontal corneal diameter [white-to-white(WTW)distance] were measured using non-contact partial coherence interferometry [intraocular lens(IOL)-Master].·RESULTS: Ocular biometric data on 1721 participants with a average age of 57.0 ±8.7y were analyzed at last.The general mean AL, ACD, mean corneal curvature radius(MCR), WTW were 22.80±1.12, 2.96±0.36, 7.56±0.26 and 11.75 ±0.40 mm, respectively. The mean values of each parameter in 40 to 49, 50 to 59, 60 to 69, and 70 to91 years age groups were as follows: AL, 22.77 ±0.87,22.76 ±1.06, 22.89 ±1.41, 22.92 ±0.80 mm; ACD, 3.10 ±0.32,2.98 ±0.34, 2.86 ±0.36, 2.77 ±0.35 mm; MCR, 7.58 ±0.25,7.54 ±0.26, 7.55 ±0.26, 7.49 ±0.28 mm; WTW, 11.79 ±0.38,11.75 ±0.40, 11.72 ±0.41, 11.67 ±0.41 mm. The AL, ACD,MCR and WTW were correlated with age and the AL was correlated with height and weight.·CONCLUSION: Our findings can serve as an important normative reference for multiple purposes and may help to improve the quality of rural eye care.

  9. Use of Non-invasive Methods for Evaluating the Testicular Biometry in Collared Peccaries (Pecari tajacu Linnaeus, 1758).

    Science.gov (United States)

    Peixoto, G C X; Silva, M A; Lima, G L; Campos, L B; Paiva, A L C; Paula, V V; Ricarte, A R F; Silva, A R

    2016-02-01

    The aim of this study was to compare the accuracy of two methods used to estimate testicular volume in the collared peccary. Calliper and ultrasonographic measurements of testicular dimensions (length, width and height) of both testes were taken on five adult collared peccaries. The testicular volume was calculated by Lambert's empiric formula: length (L) × width (W) × height (H) × 0.71, the formula of an ellipsoid L × W × H × 0.52, and Hansen's formula: L × W(2)  × 0.52. The calculated volumes were then compared with the actual ones, which were estimated by water displacement. The mean of true testicular volume was 22.65 ± 1.52 ml. Lambert's formula estimated testicular volume more accurately when ultrasound measurements were taken. However, when the calliper was the methodology used, the results were closest to the true volume, especially when Ellipsoid formula and Hansen's formula were applied, and underestimated the true volumes by 1.53 ± 1.75 ml and 1.53 ± 1.65 ml, respectively. This specific application of technologies in wild animals has the potential to revolutionize the selection process for the collared peccary entering artificial insemination or natural breeding programmes.

  10. Možnosti využití biometrie při platbách

    OpenAIRE

    Kašparová, Žaneta

    2014-01-01

    Presented bachelor thesis deals with the use of biometrics, particularly in payment transactions. The aim of this thesis is to analyse possibilities of using biometrics in payment transactions. Characteristics of biometric methods as well as identification of contemporary trends connected with biometric payment are included in this paper. The benefit of this thesis is a realization of research in order to analyse attitude of young generation to biometric payment in the Czech Republic.

  11. I point my heart with the tip of my fingers - Biometry for the diagnosis of congenital heart defects

    OpenAIRE

    Abdulla, Tariq; Dillenseger, Jean-Louis; Summers, Ron; Paul, Jean-François; Houyel, Lucile; Schleich, Jean-Marc

    2013-01-01

    International audience Congenital heart defects are characterized by abnormal positioning of some anatomical structures relative to a normal heart. Classically the classification of the disease or the stage of the disease is based on the measurement of the relative position of these structures by the cardiac morphologist. We propose a method in which the heart volume is acquired by a CT scanner. In this paper we present a tool which allows us to define landmarks interactively in this heart...

  12. Observations sur les migrations et la biometrie de l'Alouette des Champs (Alauda arvensis en automne au Pays-Basque

    Directory of Open Access Journals (Sweden)

    VIGNES, J.C.

    2001-01-01

    La repartición de talla de la envergadura y de las alas es bimodal, siendo los machos más grandes y el 62% de las aves capturadas, hembras. El número de migraciones parece disminuir regularmente después de varias décadas.

  13. Ultrasound assessment of placental function: the effectiveness of placental biometry in a low-risk population as a predictor of a small for gestational age neonate.

    LENUS (Irish Health Repository)

    McGinty, Patricia

    2012-07-01

    The aims of the study were to establish reference ranges for placental length and thickness in a low-risk obstetric population and to assess the likelihood of a small for gestational age (SGA) neonate on the basis of placental length at 18-24 weeks\\' gestation.

  14. Correlations of third-trimester hiatal biometry obtained using our-dimensional translabial ultrasonography with the delivery route in nulliparous pregnant women

    Energy Technology Data Exchange (ETDEWEB)

    Temtanakitpaisan, Teerayut [Dept. of Obstetrics and Gynaecology, Faculty of Medicine, Khon Kaen University, Khon Kaen (Thailand); Chantarason, Varisara [Dept. of Obstetrics and Gynaecology, Bumrungrad Hospital, Bangkok (Thailand); Bunyavejchevin, Suvit [Dept. of Obstetrics and Gynaecology, Faculty of Medicine, Chulalongkorn University, Bangkok (Thailand)

    2016-01-15

    The goal of this study was to evaluate normal hiatal dimensions in the third trimester in nulliparous Thai pregnant women and to establish which biometric factors were associated with various pregnancy outcomes. Fifty-seven consecutive nulliparous pregnant Thai women in their third trimester were recruited on a voluntary basis from April to October 2014. All subjects underwent four-dimensional (4D) translabial ultrasonography. Hiatal biometric parameters were measured at rest, while performing a Valsalva maneuver, and during contraction. Information about the patients’ eventual deliveries was obtained from their medical records. The mean values of the patients’ age, body mass index, and gestational age at the time of examination were 27.4±5.47 years, 26.7±3.48 kg/m{sup 2}, and 36.6±1.49 weeks, respectively. No subjects had vaginal lumps or experienced prolapse greater than stage 1 of the Pelvic Organ Prolapse Quantification system. Ultrasonography showed that the mean values of the hiatal area at rest, while performing a Valsalva maneuver, and during contraction were 13.10±2.92 cm{sup 2}, 17.50±4.81 cm{sup 2}, and 9.69±2.09 cm{sup 2}, respectively. The hiatal area at rest, the axial measurement at rest, and the axial measurement while performing a Valsalva maneuver were significantly associated with the route of delivery (P=0.02, P=0.04, and P=0.03, respectively). The route of delivery was associated with hiatal biometric values measured using 4D translabial ultrasonography, based on the results of nulliparous Thai women in the third trimester.

  15. Phenology and biometry of physic nut in the brazilian savannah Fenologia e biometria de pinhão-manso no cerrado

    Directory of Open Access Journals (Sweden)

    Fábio de Lima Gurgel

    2011-12-01

    Full Text Available Phenological studies on three morphologically distinct accessions of physic nut (Jatropha curcas L. were conducted in the Brazilian Savannah biome. Plant growth rate, flowering, fruit formation and development were measured in order to establish appropriate management practices for increasing productivity. The accessions CNPAE-102 (toxic and susceptible to powdery mildew, CNPAE-169 (non-toxic and susceptible to powdery mildew and CNPAE-259 (toxic and resistant to powdery mildew were studied. Accessions with undetectable levels of phorbol ester in the grains were considered as non-toxic. The agronomic variables (plant height, number of inflorescences, number of green and ripe fruits per plant from each accession were measured biweekly during one year (August 2009 to July 2010, correlating them with climatic variables using the Pearson's correlation analysis. CNPAE-102 showed the highest growth rate (0.76 cm day-1, with 1.10 m increment in height and final height of 2.60 m. CNPAE-169 showed the lowest growth rate (0.63 cm day-1 with final mean height of 1.85 m. CNPAE-102 and CNPAE-259 showed early cycle and CNPAE-169, late cycle. The minimum temperature was the climatic variable that determined the most inflorescences.Estudos fenológicos de três acessos morfologicamente distintos de pinhão-manso (Jatropha curcas L. foram conduzidos no bioma Cerrado brasileiro. A taxa de crescimento da planta, florescimento, formação e desenvolvimento dos frutos foram medidos, a fim de se estabelecer práticas de manejo eficientes para o aumento de produtividade. Os acessos estudados foram: CNPAE-102 (tóxico, susceptível a oídio, CNPAE-169 (não-tóxico, susceptível a oídio e CNPAE-259 (tóxico, resistente a oídio. Os materiais considerados não-tóxicos não possuem ésteres de forbol detectáveis nos grãos. No período de um ano (agosto de 2009 a julho de 2010 registraram-se, quinzenalmente, as variáveis agronômicas (altura de plantas, número de inflorescências, número de frutos verdes e maduros por planta de cada acesso, correlacionando-as com as variáveis climáticas, por meio da análise de correlação de Pearson. O acesso CNPAE-102 apresentou a maior taxa de crescimento (0,76 cm dia-1, incremento 1,10 m na altura e altura final de 2,60 m; o CNPAE-169 apresentou menor incremento (0,63 cm dia-1, atingindo altura final de 1,85 m. Os acessos CNPAE-259 e CNPAE-102 foram os mais precoces, e o CNPAE-169 o mais tardio. A temperatura mínima foi a variável climática que determinou o maior número de inflorescências.

  16. Comparison between a New Optical Biometry Device and an Anterior Segment Optical Coherence Tomographer for Measuring Central Corneal Thickness and Anterior Chamber Depth

    Directory of Open Access Journals (Sweden)

    Jinhai Huang

    2016-01-01

    Full Text Available Purpose. To compare between a new optical biometer (AL-Scan, Nidek Co., Aichi, Japan and an anterior segment optical coherence tomographer (Visante AS-OCT, Carl Zeiss Meditec, Dublin, USA for measuring central corneal thickness (CCT, anterior chamber depth (ACD, and aqueous depth (AD. Methods. Sixty-three eyes of 63 normal subjects were examined with AL-Scan and Visante AS-OCT in this prospective study. One eye per subject was measured three times with both devices to record their CCT, ACD, and AD. All procedures were performed by the same operator. Agreement between the two devices was assessed using paired t-tests, Bland-Altman plots, and 95% limits of agreement (LoA. Results. The mean CCT, ACD, and AD measured by AL-Scan were 538.59±27.37 μm, 3.70±0.30 mm, and 3.16±0.30 mm, respectively. The mean values obtained by the Visante OCT were 536.14±26.61 μm for CCT, 3.71±0.29 mm for ACD, and 3.17±0.29 mm for AD. The mean CCT by the AL-Scan was higher than that obtained by the Visante AS-OCT (difference = 2.45±6.07 μm, P<0.05. The differences in ACD and AD measurements were not statistically significant. The 95% LoA of CCT, ACD, and AD were between −9.44 and 14.35 μm, −0.15 and 0.12 mm, and −0.15 and 0.12 mm, respectively. Conclusions. Since these two devices were comparable for measuring CCT, ACD, and AD, their results can be interchangeably used in the clinic.

  17. Correlations of third-trimester hiatal biometry obtained using four-dimensional translabial ultrasonography with the delivery route in nulliparous pregnant women

    Directory of Open Access Journals (Sweden)

    Teerayut Temtanakitpaisan

    2016-01-01

    Full Text Available Purpose: The goal of this study was to evaluate normal hiatal dimensions in the third trimester in nulliparous Thai pregnant women and to establish which biometric factors were associated with various pregnancy outcomes. Methods: Fifty-seven consecutive nulliparous pregnant Thai women in their third trimester were recruited on a voluntary basis from April to October 2014. All subjects underwent four-dimensional (4D translabial ultrasonography. Hiatal biometric parameters were measured at rest, while performing a Valsalva maneuver, and during contraction. Information about the patients’ eventual deliveries was obtained from their medical records. Results: The mean values of the patients’ age, body mass index, and gestational age at the time of examination were 27.4±5.47 years, 26.7±3.48 kg/m2, and 36.6±1.49 weeks, respectively. No subjects had vaginal lumps or experienced prolapse greater than stage 1 of the Pelvic Organ Prolapse Quantification system. Ultrasonography showed that the mean values of the hiatal area at rest, while performing a Valsalva maneuver, and during contraction were 13.10±2.92 cm2, 17.50±4.81 cm2, and 9.69±2.09 cm2, respectively. The hiatal area at rest, the axial measurement at rest, and the axial measurement while performing a Valsalva maneuver were significantly associated with the route of delivery (P=0.02, P=0.04, and P=0.03, respectively. Conclusion: The route of delivery was associated with hiatal biometric values measured using 4D translabial ultrasonography, based on the results of nulliparous Thai women in the third trimester.

  18. Comparison between a New Optical Biometry Device and an Anterior Segment Optical Coherence Tomographer for Measuring Central Corneal Thickness and Anterior Chamber Depth.

    Science.gov (United States)

    Huang, Jinhai; Lu, Weicong; Savini, Giacomo; Chen, Hao; Wang, Chengfang; Yu, Xinxin; Bao, Fangjun; Wang, Qinmei

    2016-01-01

    Purpose. To compare between a new optical biometer (AL-Scan, Nidek Co., Aichi, Japan) and an anterior segment optical coherence tomographer (Visante AS-OCT, Carl Zeiss Meditec, Dublin, USA) for measuring central corneal thickness (CCT), anterior chamber depth (ACD), and aqueous depth (AD). Methods. Sixty-three eyes of 63 normal subjects were examined with AL-Scan and Visante AS-OCT in this prospective study. One eye per subject was measured three times with both devices to record their CCT, ACD, and AD. All procedures were performed by the same operator. Agreement between the two devices was assessed using paired t-tests, Bland-Altman plots, and 95% limits of agreement (LoA). Results. The mean CCT, ACD, and AD measured by AL-Scan were 538.59 ± 27.37 μm, 3.70 ± 0.30 mm, and 3.16 ± 0.30 mm, respectively. The mean values obtained by the Visante OCT were 536.14 ± 26.61 μm for CCT, 3.71 ± 0.29 mm for ACD, and 3.17 ± 0.29 mm for AD. The mean CCT by the AL-Scan was higher than that obtained by the Visante AS-OCT (difference = 2.45 ± 6.07 μm, P LoA of CCT, ACD, and AD were between -9.44 and 14.35 μm, -0.15 and 0.12 mm, and -0.15 and 0.12 mm, respectively. Conclusions. Since these two devices were comparable for measuring CCT, ACD, and AD, their results can be interchangeably used in the clinic. PMID:27403339

  19. Correlations of third-trimester hiatal biometry obtained using four-dimensional translabial ultrasonography with the delivery route in nulliparous pregnant women

    OpenAIRE

    Teerayut Temtanakitpaisan; Varisara Chantarasorn; Suvit Bunyavejchevin

    2015-01-01

    Purpose: The goal of this study was to evaluate normal hiatal dimensions in the third trimester in nulliparous Thai pregnant women and to establish which biometric factors were associated with various pregnancy outcomes. Methods: Fifty-seven consecutive nulliparous pregnant Thai women in their third trimester were recruited on a voluntary basis from April to October 2014. All subjects underwent four-dimensional (4D) translabial ultrasonography. Hiatal biometric parameters were measured at res...

  20. Morfologia e biometria do timo em araras dos gêneros Ara e Anodorhynchus Morphology and biometry of the thymus gland in macaw of Ara and Anodorhynchus genera

    Directory of Open Access Journals (Sweden)

    R.Z. Lima

    2013-02-01

    Full Text Available Foram utilizados 12 exemplares de Ara ararauna - seis fêmeas e seis machos -, cinco exemplares de Ara chloropterus (uma fêmea e quatro machos e dois exemplares de Anodorhynchus hyacinthinus - uma fêmea e um macho -, todos adultos, doados por criadouro particular, após óbito natural. Os lobos foram dissecados e medidos com paquímetro - comprimento x largura x espessura - e analisados quanto ao peso, à topografia e à morfologia individual. Independentemente do gênero, foram identificados, em 17 casos (89,5%, lobos tímicos nos antímeros cervicais esquerdo e direito, e em oito casos (42,1%, lobos na cavidade celomática. Os lobos apresentaram formatos alongados - 52,6% -, arredondados - 21,1% - ou ovalados - 15,8% -, posicionados preferencialmente ventromedialmente ao longo do plexo vasculoneural do pescoço, com número médio de cinco lobos por antímero, tamanho médio de 0,49cm de comprimento, 0,12cm de largura e 0,05cm de espessura e peso médio de 0,076g.Twelve samples of Ara ararauna - six females and six males -, five samples of Ara chloropterus (one female and four males and two samples of Anodorhynchus hyacinthinus (one female and one male, all adults from a Breeding Park, were used after natural death. The lobes were dissected and measured with electronic calliper (length x width x thickness and analyzed taking their weight, topography and individual morphology into account. Regardless of gender, 89.5% of the cases presented timic lobes in the left and right cervical antimere, and 42.1% of the cases presented lobes in the celomatic cavity. The lobes were shown in shapes - long (52.6%, round (21.1% or oval (15.8%, positioned mostly ventromedially, along the neurovascular plexus of the neck, with an average of five lobes per antimere, and an average size of 0.49cm length, 0.12cm width, and 0.05cm thick and average weight of 0.076g.

  1. Oligo-Miocene foraminiferal record (Miogypsinidae, Lepidocyclinidae and Nummulitidae) from the Western Taurides (SW Turkey): Biometry and implications for the regional geology

    Science.gov (United States)

    Özcan, Ercan; Less, György; Báldi-Beke, Mária; Kollányi, Katalin; Acar, Ferhat

    2009-05-01

    The marine Oligo-Miocene units of western Taurides, deposited under different tectonic regimes (in Bey Dağları platform in foreland and coeval sequences in hinterland), were studied to establish a high-resolution biostratigraphic framework. Biometric study of the full spectrum of larger foraminifera in a regional scale allowed us correlating them with the shallow benthic zonation (SBZ) system introduced by [Cahuzac, B., Poignant, A., 1997. Essai de biozonation de l'Oligo-Miocène dans les bassins européens à l'aide des grands foraminifères néritiques. Bulletin de la Société géologique de France 168, 155-169], and to determine the ages of these sites on zonal precision for the first time. In correlating these assemblages to standard shallow benthic zones, planktonic data were also used whenever possible. Taxa, classified under the genera Nummulites, Miogypsina, Miolepidocyclina, Nephrolepidina, Eulepidina, Heterostegina, Operculina and Cycloclypeus (?) and their assemblages, closely resemble to the fauna described from European basins. These groups characterize the SBZ 22B to 25 zones referring to a time interval from early Chattian to Burdigalian. However, a main gap in late Chattian (SBZ 23) and in early part of the Aquitanian (SBZ 24) is also recorded in the platform succession. In the meantime, rare Eulepidina in the Burdigalian levels suggest a clear Indo-Pacific influence. Based on the discovery of early Chattian (SBZ 22B) deposits (previously mapped under Eocene/Miocene units), the Oligo-Miocene stratigraphy of the Bey Dağları platform is also revised. A more precise chronology for regional Miocene transgression is presented based on the miogypsinid evolutionary scale.

  2. Determinants of female fecundity and outcome of pregnancy : epidemiological cohort studies to the effects of age, biometry and life style habits

    NARCIS (Netherlands)

    B.M. Zaadstra (Baukje Marijke)

    1993-01-01

    textabstractBecoming a mother is no more a matter of destiny only, but increasingly a matter of choice as wel!. Until recently, having children was as natura! as eating, drinking and dying. Children just "happened" during the course of (married) life. However in modem societies life does not just "h

  3. La relance des activités de biométrie au sein de la recherche agronomique zaïroise

    Directory of Open Access Journals (Sweden)

    Kizungu, V.

    1996-01-01

    Full Text Available The Revival of Biometrie Activities in the Zairean Agricultural Research. This paper gives an overview of biometrie activities in the Zairean agricultural research. Biometrie methods were introduced by INEAC in 1953. The activities were discontinued in 1960 and then started again in 1990. The paper also provides new perspectives.

  4. Produção e biometria do milho verde irrigado com água salina sob frações de lixiviação Production and biometry of green corn irrigated with saline water under leaching fractions

    OpenAIRE

    José F. de Carvalho; Celestino J. Tsimpho; Ênio F. de F. e Silva; Pedro R. F. de Medeiros; Max H. Vieira dos Santos; Alexandre N. dos Santos

    2012-01-01

    O trabalho teve como objetivo avaliar o desempenho da cultura do milho em relação a produção e biometria, irrigado por gotejamento com água salina e sob diferentes frações de lixiviação em estação lisímetrica de drenagem. Os tratamentos consistiram de dois níveis de salinidade da água (CEa- 1,2 e 3,3 dS m-1) e cinco frações de lixiviação (FL- 0, 5, 10, 15 e 20%) em delineamento inteiramente casualizado em esquema fatorial 2 x 5. O experimento foi conduzido na área experimental do Departamento...

  5. Efeito da vagotomia troncular em ratos injetados na fase neonatal com glutamato monossódico: estudo biométrico Effect of vagotomy in rats neonatally injected with monosodium glutamate: biometry study

    Directory of Open Access Journals (Sweden)

    Fernando de Souza

    2001-03-01

    Full Text Available Obesidade hipotalâmica pode ocorrer em humanos e pode ser reproduzida, experimentalmente, por lesão do VMH em ratos. Esta obesidade pode ser revertida por vagotomia troncular (VT, devido à redução da ingestão alimentar e da insulinemia mediada pelo nervo vago. Experimentalmente, a injeção de MSG causa lesão em nível de ARC. O objetivo deste trabalho é avaliar os efeitos do MSG em ratos e se VT os altera. Estudou-se 52 ratos Wistar machos, divididos em dois grupos de 26 animais, um submetido à injeção de MSG na fase neonatal e outro à de solução salina. Aos 30 dias de vida, após nova divisão, obteve-se: grupo MSG, submetido à VT (VTMSG, e outro à laparotomia (LAPMSG; grupo SALINA, submetido à VT (VTSAL, e outro à laparotomia (LAPSAL. Obteve-se peso, CNA e índice de Lee. O consumo alimentar foi obtido dos 30 aos 90 dias de vida. Aos 90 dias, após eutanásia, mensurou-se peso, CNA, índice de Lee e gordura perigonadal. Análise estatística foi realizada pelo "t de Student". Constatou-se que o MSG provoca redução do CNA e aumento do índice de Lee aos 30 dias de vida, e provoca redução do peso e do CNA, aumento do índice de Lee e da gordura perigonadal aos 90 dias e aumento do consumo alimentar dos 30 aos 90 dias de vida. A VT provoca redução do peso, do índice de Lee e da gordura perigonadal, e tendência à redução do CNA no rato injetado com MSG. A VT provoca redução de consumo alimentar nos primeiros 30 dias de pós-operatório, mas com tendência a maior consumo nos 30 dias subseqüentes. Conclui-se que o MSG injetado na fase neonatal provoca aumento do consumo alimentar e da adiposidade e causa redução da estatura e do peso do animal dos 30 aos 90 dias de vida. E que a VT, realizada aos 30 dias de vida, provoca redução do consumo alimentar nos primeiros 30 dias de pós-operatório, da adiposidade e do peso.The hypothalamus and autonomic nervous system exert strong influence in food intake. Hypothalamic lesion could cause neuroendocrine obesity. Hypothalamic obesity could be reproduced through ventromedial hypothalamic lesion in animals and attenuated that by subdiafragmatic vagotomy (VT. VT decreased food intake and insulinemia. Injection of monosodium glutamate (MSG neonatally in rats produces adiposity, hyperphagia, without weight gain because it injures arcuate nucleus of the hypothalamus, site of growth hormone releasing hormone production. The purpose of this paper is to evaluate the MSG effect on weight, stature, Lee index (3 square root body weight/nasoanal length, gonadal fat (GF and food intake in rats and the VT effect on these parameters. Fifty-two male Wistar rats were used, divided into two groups of twenty-six animals each. SALINA group was subcutaneously injected with saline solution 12.5% (1.25 mg/g body weight/dayly/5days and MSG group was injected with MSG solution 24% (4 mg/g body weight/dayly/5 days, after the rats were born, in the posterior cervical region without adverse reaction. On the 30th day of life, the animals were divided into four groups and submitted to operation, sham operated groups (LAPSAL and LAPMSG and vagotomized groups (VTSAL and VTMSG. On operation day, weight, nasoanal length (NAL and Lee index were obtained. Food intake were obtained from the 30th day until 90th day. On 90th day, the animals were sacrificed and weight, NAL, Lee index and GF were obtained. Statistic analysis was performed by the Student’s t test. NAL was smaller and Lee index was greater in MSG group than in SALINA group on the 30th day. Weight gain and NAL were smaller and Lee index and GF were greater on the 90th day, and food intake from the 30th to 90th day period was greater in LAPMSG group than in LAPSAL group. Weight gain, Lee index and GF were smaller and NAL trended smaller in VTMSG group than in LAPMSG group on the 90th day. Food intake from the 30th to 60th day period was smaller and trended greater from the 60th to 90th day period in VTMSG group than in LAPMSG. Vagal regeneration could explain that food intake inversion. These results suggest that MSG injected neonatally increases food intake and adiposity, and decreases stature and weight gain from the 30th to 90th day period. VT performed on the 30th day decreases food intake in first 30 days and decreases weight gain, Lee index and GF in MSG injected rats.

  6. Comparison and evaluation of ocular biometry using the noncontact Lenstar, IOL-Master and contact ultrasound A-scan%Lenstar与A超及IOL-Master进行眼部生物测量比较研究

    Institute of Scientific and Technical Information of China (English)

    李炳震; 梁晨; 冬雪川; 孙岩秀; 郝燕生

    2014-01-01

    Objective To evaluate a new noncontact optical biometer (Lenstar) using optical low-coherence reflectometry and to compare the biometric measurements (axial length,AL and anterior chamber depth,ACD) with those obtained from current clinical instrumentation (IOL-Master and ultrasound A-scan).Methods In this prospective clinical study,measurements of AL and ACD obtained from 123 eyes of 78 subjects with the Lenstar were compared with those obtained with the IOL-Master or ultrasound A-scan.The results were evaluated using Bland-Altman analyses.The differences between both methods were assessed using the paired t test,and its correlation was evaluated by Pearson coefficient.Results Lenstar measurements of AL and ACD were similar to the IOL-Master (average difference=-0.003±0.048mm,P =0.517; average difference=-0.044±0.091mm,P =0.573),respectively.Lenstar measurements of AL and ACD were significantly longer than those of A-scan (average difference=0.117±0.195mm,P <0.001; average difference=0.080±0.253mm,P <0.001),respectively.A Pearson correlation revealed a high correlation for AL and ACD (r ≥0.916 for all,P <0.001for all).Bland-Altman plots showed good agreements for AL measurements and ACD between Lenstar and IOL-Master and the level of agreement was not acceptable betweenLenstar and A-scan.Conclusions For the measurement of AL and ACD,there is goodagreement between Lenstar and IOL-Master.Nevertheless,Lenstar and A-scan cannot beused interchangeably.The results,coupled with a unique ability to analyze the ocular structures non-contactly make the Lenstar a promising new instrument for ocular evaluation in research and clinical practice.%目的 比较Lenstar与IOL-Master及A超在测量眼轴长度(axial length,AL)、前房深度(anterior chamber depth,ACD)时的差异,分析三种测量方法的一致性,为Lenstar的临床应用提供依据.方法 前瞻性临床研究.对2011年12月至2012年3月在北医三院眼科的白内障术前患者及志愿者计78例123只眼,分别应用Lenstar与IOL-Master及A超进行AL、ACD测量,Lenstar与IOL-Master及A超测量值间的差异采用配对t检验,相关性采用Pearson相关分析,一致性采用Bland-Ahman统计分析.结果 Lenstar与IOL-Master测量AL及ACD的平均值差值分别为(-0.003±0.048)mm及(-0.044±0.091) mm,其差异均无统计学意义(P =0.517;P=0.573,P>0.05).Lentar与A超测量AL及ACD的平均值差值分别为(0.117±0.195) (0.080±0.253) mm,其差异均有统计学意义(P<0.01).三种测量方法所获得的AL及ACD均具有密切的线性相关差异有统计学意义(r≥0.916,P<0.01).Bland-Altman分析显示,在测量AL及ACD时,Lenstar与IOL-Master的一致性较好,与传统A超测量值的一致性较差.结论 在测量眼轴长度及前房深度时,Lenstar与IOL-Master的一致性较好,与传统A超测量值的一致性较差,由于Lenstar具有一次测量可获得多项数据、简单快捷、非接触等优点,是一种在临床中可选择的准确性较高地生物学测量仪器.

  7. AMMONIZATION IN THE PRODUCTION RESIDUE OF FODDER SEEDS IN THE PERFORMANCE AND BIOMETRY OF LAMBS AMONIZAÇÃO DO RESÍDUO DA PRODUÇÃO DE SEMENTES DE FORRAGEM NO DESEMPENHO E BIOMETRIA DE CORDEIROS

    Directory of Open Access Journals (Sweden)

    Gustavo Rezende Siqueira

    2009-09-01

    Full Text Available In order to evaluate the effect of ammonization in the production residue of Brachiaria brizantha seeds in the performance and in vivo biometric measurements of sheep, 19 Santa Inês lambs (females and non-castrated males were used, with initial weight of 15kg, confined in individual cages until reaching 28kg. Animals were arranged into two groups, receiving isoenergetic and isoproteic diets with 40:60 volumous:concentrate ratio, being diet 1 (D1 made up with non-treated volumous with urea + addiction of urea in concentrate and diet 2 (D2 with treated volumous with addiction of 2% urea in MS + concentrate without urea. Dry matter consumption was similar between diets and sexes (0.85 kg/day, 3.28%/BW e 73.15 g/kg0,75/day; however, the remaining performance parameters were affected by the different sexes of animals. There was not interaction between diet and sex in biometric measurements; however, body length was higher for females (66.50 cm compared to males (61.12 cm. We conclude that the effect of ammonization in diet volumous did not affect performance and biometric measurements of sheep terminated in confinement, being that some changes occurred due to the different sexes of the animals.

    KEY WORDS: Chemical treatment, nutritional value, sheep, urea, volumous.
    Para avaliar o efeito da amonização no resíduo da produção de sementes de Brachiaria brizantha no desempenho e nas medidas biométricas in vivo de ovinos, foram utilizados dezenove cordeiros (machos não castrados e fêmeas da raça Santa Inês, com peso inicial de quinze kg, confinados em gaiolas individuais até atingirem 28 kg. Distribuíram-se os animais em dois grupos, recebendo dietas isoenergéticas e isoproteicas com relação volumoso:concentrado 40:60, sendo a dieta 1 (D1 constituída de volumoso não amonizado + inclusão de ureia no concentrado e D2 com volumoso tratado com inclusão de 2% de ureia na MS + concentrado sem ureia. O consumo de matéria seca mostrou-se similar entre as dietas e sexos (0,85 kg/dia, 3,28%/PV e 73,15g/kg0,75/dia, porém os demais parâmetros de desempenho foram afetados pelos diferentes sexos dos animais. Não houve interação entre dieta e sexo nas medidas biométricas. No entanto, o comprimento corporal foi superior para fêmeas (66,50 cm em comparação aos machos (61,12 cm. Conclui-se que o efeito da amonização no volumoso da dieta não afeta o desempenho, nem as medidas biométricas de ovinos terminados em confinamento. Algumas alterações que ocorrem relacionaram-se ao diferente sexo dos animais.

    PALAVRAS-CHAVES: Ovinos, tratamento químico, ureia, valor nutritivo, volumoso.

  8. 77 FR 15961 - Revision of Organization and Conforming Changes to Regulations

    Science.gov (United States)

    2012-03-19

    .... Division of Personalized Nutrition and Medicine. Biometry Branch. Pharmacogenomics Branch. Division of... Administration, 19903 New Hampshire Ave., Silver Spring, MD 20903, 301-796-8846. SUPPLEMENTARY INFORMATION: I... Sciences. Office of Nutrition, Labeling, and Dietary Supplements. Nutrition Programs Staff. Division...

  9. 21 CFR 5.1100 - Headquarters.

    Science.gov (United States)

    2010-04-01

    ... Laboratory. Division of Personalized Nutrition and Medicine. Biometry Branch. Pharmacogenomics Branch... Management Staff. Division of Social Sciences. Office of Nutrition, Labeling and Dietary Supplements. Food... Dietary Supplement Programs. CENTER FOR TOBACCO PRODUCTS.15 15 Mailing address: 9200 Corporate...

  10. Biometria testicular, eletroejaculação e características seminais de caititus, Tayassu tajacu Linnaeus, 1758 (Mammalia, Artiodactyla, Tayassuidae) mantidos em cativeiro na Amazônia Oriental Testicular biometry, electroejaculation and seminal features of captive collared peccaries (Tayassu tajacu Linnaeus, 1758, Artiodactyla, Tayassuidae) raised in the Eastern Amazon

    OpenAIRE

    Priscila Reis Kahwage; Alexandre Rossetto Garcia; Diva Anelie de Araújo Guimarães; Otávio Mitio Ohashi; Rosemar Silva Luz-Ramos; Hilma Lúcia Tavares Dias; Natália Inagaki de Albuquerque; Mário Mansour Pinheiro Bartha

    2010-01-01

    Estudos relacionados à obtenção e avaliação de sêmen de Tayassu tajacu são escassos, sendo necessárias pesquisas a respeito. Os objetivos do estudo foram avaliar a biometria testicular de caititus adultos cativos, testar a eficiência da eletroejaculação para obtenção de sêmen e avaliar suas características seminais ao longo do ano. Procedeu-se à eletroejaculação em oito animais adultos e as amostras de sêmen colhidas foram avaliadas quanto às características físicas e morfológicas. Os animais...

  11. Biometrias óptica e ultra-sônica: comparação dos métodos usados para o cálculo da lente intra-ocular acomodativa Optical and ultrasound biometry: comparision between the two methods used for the calculation of accommodative intraocular lens

    OpenAIRE

    Filipe de Oliveira; Cristina Muccioli; Yara Cristina Lopes; Eduardo Sone Soriano; Rubens Belfort Jr.

    2004-01-01

    OBJETIVO: Comparar a precisão e reprodutibilidade de dois biômetros ultra-sônicos convencionais e um biômetro óptico para o cálculo da lente intra-ocular (LIO) acomodativa. MÉTODOS: Pacientes com catarata foram submetidos aos exames em 3 biômetros distintos (IOLMaster®, Axis II® e Humphrey Mod. 820®), antes da cirurgia para implantação da lente intra-ocular acomodativa de silicone (C&C Vision AT-45). No biômetro Humphrey Mod. 820 utilizou-se a técnica de contato e o Axis II foi usado para as ...

  12. Ophthalmic ultrasonography

    International Nuclear Information System (INIS)

    Today, diagnostic ultrasound is an important and indispensable part of modern ophthalmology. These proceedings present an up-to-date platform of SIDUO research, and bring to light many interesting and useful contributions to ophthalmic ultrasound, both in the fields of educational work and of new scientific results and technical developments. This volume covers topics such as intraocular tumours, vitreo-retinal pathology, other types of intraocular pathology, biometry for lens implantation, clinical biometry, orbital tumours, plus the optic nerve and muscles, among other subjects. There is also an important section on the physics and techniques of ophthalmic ultrasonography. (orig.)

  13. Selection of a statistical software in the

    OpenAIRE

    Babik, Tillmann; Muche, Rainer

    2008-01-01

    Based on the major revision of the regulation for the licence to practice medicine (ÄAppO) we adapted teaching in medical biometry. The so-called “teaching project Biometry” is intended to give basics of biometry to the students by using computer methods. For this purpose an E-Learning system is established and a statistical software is introduced. Methods of statistics are inducted using a real medical patient data set. First of all the new project is intended to increase the students’ motiv...

  14. Ocular biometric characteristics during the menstrual cycle

    Directory of Open Access Journals (Sweden)

    Çakmak H

    2015-06-01

    Full Text Available Harun Çakmak,1 Ayten Taspinar,2 Mehmet Ozbagcivan,1 Tolga Kocatürk1 1Department of Ophthalmology, 2Department of Midwifery, School of Health, Adnan Menderes University Medical Faculty, Aydin, Turkey Purpose: To determine the ocular biometric characteristics during the menstrual cycle using the optical low-coherence reflectometry (OLCR biometry. Methods: Twenty-two healthy women between the ages of 19 and 36 years with regular menstrual cycles were enrolled in this prospective study. Subjects with irregular menstrual cycles, those taking contraceptive pills, those with a history of ocular surgery or trauma, and women unable to cooperate with the ocular biometry device were excluded from this study. A complete ophthalmic examination was performed between 8.30 and 10.30 am for all participants. Also, central corneal thickness, axial length, anterior chamber depth, lens thickness, and keratometric measurements were made at the same time using the OLCR device. Measurements were taken at the beginning of the cycle (1–3 days, at ovulation (12–16 days, and at the end of the cycle (26–32 days. Results: The mean age of the participants was 22.86±4.22 (range: 18–36 years. The difference in central corneal thickness, axial length, anterior chamber depth, lens thickness, and keratometry values were not statistically significant during the menstrual cycle. Conclusion: The ocular biometric parameters did not significantly vary during the menstrual cycle according to the OLCR biometry. Keywords: ocular biometry, OLCR, menstrual cycle

  15. A survey of midwives' views on providing aspects of antenatal care in Estonia

    DEFF Research Database (Denmark)

    Lazarus, Jeffrey V; Rull, Kristiina; Wyn Huws, Dyfed;

    2007-01-01

    that counselling, biometry and blood pressure monitoring should be the sole responsibility of midwives. KEY CONCLUSIONS: despite national policy to shift ANC towards being midwifery-led and despite provisions in a European Directive permitting most roles in ANC to be performed autonomously by trained midwives...

  16. Production of Doctorates in the Biosciences, 1975-1980: An Experimental Forecast. Higher Education Panel Reports, No. 34.

    Science.gov (United States)

    Atelsek, Frank J.; Gomberg, Irene L.

    A survey was undertaken in 1976 to obtain short-term estimates of doctorate production directly from the heads of the science departments involved. These biosciences departments were surveyed in the 235 member institutions of the Higher Education Panel that grant doctorates: anatomy, biochemistry, biology, biometry/biostatistics/biomathematics,…

  17. Post-embryonic development and the phylogeny of geophilomorph centipedes (Chilopoda)

    NARCIS (Netherlands)

    Minelli, Alessandro

    1985-01-01

    The post-embryonic development of six geophilomorph species is investigated using histology, biometry and field observations. No instance of anamorphosis was observed. Sexual maturity is reached at the 5th post-foetal stage in Schendyla nemorensis, Dicellophilus carniolensis, Henia (Chaetechelyne) v

  18. Abstract Invited Braumann 3rd WSMC 2008

    OpenAIRE

    Braumann, Carlos A.

    2009-01-01

    Invited conference of the joint scientific meeting Third Workshop on Statistics, Mathematics + First Portuguese-Polish Workshop on Biometry (Lisboa, Portugal, July 2008). The conference involved several applications of stochastic differential equations in population growth and animal individual growth, including the issues of extinction, existence of stationary densities and the use of Itô or Stratonovich calculus.

  19. Data Integration for Integrated Research and Care.

    Science.gov (United States)

    Winter, Alfred; Hilgers, Ralf-Dieter; Hofestädt, Ralf; Knaup-Gregori, Petra; Ose, Claudia; Timmer, Antje

    2016-08-01

    A national German funding initiative for Medical Informatics focusing at data integration for medicine gives an opportunity to reopen a window to Germany. In the open window appears a best paper selection of the 2015 annual conference of the German Society of Medical Informatics, Biometry and Epidemiology and papers of the German journal GMS Medical Informatics, Biometry and Epidemiology (MIBE). The publications in focus deal with data integration by transferring clinical routine data into an electronic data capture (EDC) system, using natural language processing to make unstructured date processable, measuring quality of record linkage, and by using a unified metadata scheme for integrated documentation in laboratories. Two additional papers present methods for data analysis especially for change point detection in binary sequences and for analyzing categorial data. PMID:27406981

  20. Temporal and spatial variations in iron concentrations of tropical bivalves during dredging event

    Digital Repository Service at National Institute of Oceanography (India)

    Brown, B.E.; Jayakumar, A.

    of byssus in samples could lead to considerable variation in iron content. All animals were purged for 48 h prior to prepara- tion for analysis as described in Brown & Holley (1982); analytical techniques followed the practices adopted in this paper... in mussel farming. Aquaculture 20, 291-303. Sokal, R. R. & Rohlf, E J. (1981). Biometry. W. H. Freeman and Company, San Francisco. Strong, C. R. & Luoma, S. N. (1981). Variations in the correlation of body size with concentrations of copper and silver...

  1. Fingerprint Quality Evaluation in a Novel Embedded Authentication System for Mobile Users

    OpenAIRE

    Giuseppe Vitello; Vincenzo Conti; Salvatore Vitabile; Filippo Sorbello

    2015-01-01

    The way people access resources, data and services, is radically changing using modern mobile technologies. In this scenario, biometry is a good solution for security issues even if its performance is influenced by the acquired data quality. In this paper, a novel embedded automatic fingerprint authentication system (AFAS) for mobile users is described. The goal of the proposed system is to improve the performance of a standard embedded AFAS in order to enable its employment in mobile devices...

  2. The Mantel-Haenszel procedure. 50 years of the statistical method for confounders control

    OpenAIRE

    Alice Mannocci

    2009-01-01

    The Mantel Haenszel procedure represents a simple and useful tool to obtain estimates of association, adjusted for the effect of one or more confounders. Nathan Mantel (1919-2002) was a biostatistician. In 1947 he was hired as a member of a new biometry group at the National Cancer Institute (NCI) in the National Institute of Health (NIH), Maryland, and in this time he collaborated with William M Haenszel (1910-1998). Haenszel, who was a sociologist, mathematician and statistician, had been w...

  3. Red-billed Leiothrix sexing is a matter of colour

    OpenAIRE

    Pagani-Núñez, E.; Senar, Juan Carlos; Tella, José Luis

    2013-01-01

    Capsule The Red-billed Leiothrix (Leiothrix lutea) is a superficially sexually monochromatic colourful bird native to the Indian subcontinent, which has colonized many locations across the world as an introduced species. We investigated the best method to accurately sex the species, capturing and measuring the colour and external morphometry of a sample of 57 individuals, which were later sexed molecularly from blood samples. We found that sexes showed no dimorphism in biometry or size of win...

  4. Can progressive resistance training twice a week improve mobility, muscle strength, and quality of life in very elderly nursing-home residents with impaired mobility? A pilot study

    OpenAIRE

    Krist L; Dimeo F; Keil T

    2013-01-01

    Lilian Krist,1 Fernando Dimeo,2 Thomas Keil1,3 1Institute of Social Medicine, Epidemiology, and Health Economics, Charité University Medical Center, 2Department of Sports Medicine, Charité University Medical Center, Berlin, 3Institute of Clinical Epidemiology and Biometry, University of Wurzburg, Wurzburg, Germany Purpose: To determine the effects of progressive resistance training on mobility, muscle strength, and quality of life in nursing-home residents with impaired mobility...

  5. Can progressive resistance training twice a week improve mobility, muscle strength, and quality of life in very elderly nursing-home residents with impaired mobility? A pilot study

    OpenAIRE

    Krist, Lilian

    2013-01-01

    Lilian Krist,1 Fernando Dimeo,2 Thomas Keil1,3 1Institute of Social Medicine, Epidemiology, and Health Economics, Charité University Medical Center, 2Department of Sports Medicine, Charité University Medical Center, Berlin, 3Institute of Clinical Epidemiology and Biometry, University of Wurzburg, Wurzburg, Germany Purpose: To determine the effects of progressive resistance training on mobility, muscle strength, and quality of life in nursing-home residents with impaired...

  6. Management of fetal growth restriction

    OpenAIRE

    Alberry, M; Soothill, P

    2007-01-01

    Fetal growth restriction (FGR) is challenging because of the difficulties in reaching a definitive diagnosis of the cause and planning management. FGR is associated not only with a marked increased risk in perinatal mortality and morbidity but also with long‐term outcome risks. Combinations of fetal biometry, amniotic fluid volume, heart rate patterns, arterial and venous Doppler, and biophysical variables allow a comprehensive fetal evaluation of FGR. However, no evidence supports that the u...

  7. Ear detection with convolutional neural networks

    OpenAIRE

    Gabriel, Luka Lan

    2016-01-01

    Object detection is still considered a difficult task in the field of computer vision. Specifically, earlobe detection has become a popular application as the interest in human identification using earlobe biometry has increased. So far earlobe detection problem has been solved using a combination of skin detection, edge detection, segmentation by fusion of histogram-based k-means, and template matching algorithms. In this work we present a method of earlobe detection without template matchin...

  8. Mechanism and Etiology of Primary Chronic Angle Closure Glaucoma

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    The ocular anatomic features, pupil-blocking force, status of angle synechiae closure and positivity of provocative tests were compared between the primary chronic angle closure glaucoma (PCACG) and primary a-cute angle closure glaucoma (PAACG) by using ultrasonic biometry, computerized anterior ocular segment image processing technique, gonioscopy and provocative tests. The studies showed that the anterior chamber depth of PAACG was shallower than that of PCACG; the pupil-blocking force of PAACG was st...

  9. Statistical methods in longitudinal research principles and structuring change

    CERN Document Server

    von Eye, Alexander

    1991-01-01

    These edited volumes present new statistical methods in a way that bridges the gap between theoretical and applied statistics. The volumes cover general problems and issues and more specific topics concerning the structuring of change, the analysis of time series, and the analysis of categorical longitudinal data. The book targets students of development and change in a variety of fields - psychology, sociology, anthropology, education, medicine, psychiatry, economics, behavioural sciences, developmental psychology, ecology, plant physiology, and biometry - with basic training in statistics an

  10. Mid-term outcomes of patients with PCI prior to CABG in comparison to patients with primary CABG

    OpenAIRE

    Sandra Eifert; Helmut Mair; Anne-Laure Boulesteix; et al

    2010-01-01

    Sandra Eifert1, Helmut Mair1, Anne-Laure Boulesteix2, Eckehard Kilian1, Martin Adamczak1, Bruno Reichart1, Peter Lamm11Department of Cardiac Surgery, 2Department of Medical Informatics, Biometry and Epidemiology (IBE), Ludwig Maximilians University, Munich, GermanyAbstract: The number of percutaneous coronary interventions (PCI) prior to coronary artery bypass grafting (CABG) increased drastically during the last decade. Patients are referred for CABG with more severe coronary pathology, whic...

  11. New ways in the biometrical education within the scope of the medicine study – individual qualification profiles

    OpenAIRE

    Heussen, Nicole; Hilgers, Ralf-Dieter

    2008-01-01

    By the revision of the 'Approbationsordnung für Ärzte' from June 27, 2002 the Medical faculties must offer compulsory elective courses. In addition, the science council has demanded the support of the scientific education of students and young researcher in medicine. Here we present our approach to consolidate both aspects and provide some ideas how to intensify and extend teaching within epidemiology, medical biometry and medical informatics (called Q1 course).

  12. Coding training for medical students: How good is diagnoses coding with ICD-10 by novices?

    OpenAIRE

    Stausberg, Jürgen; Lehmann, Nils

    2005-01-01

    Teaching of knowledge and competence in documentation and coding is an essential part of medical education. Therefore, coding training had been placed within the course of epidemiology, medical biometry, and medical informatics. From this, we can draw conclusions about the quality of coding by novices. One hundred and eighteen students coded diagnoses from 15 nephrological cases in homework. In addition to interrater reliability, validity was calculated by comparison with a reference coding. ...

  13. Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound

    Directory of Open Access Journals (Sweden)

    Jorge J

    2013-02-01

    Full Text Available J Jorge,1 JL Rosado,2 JA Díaz-Rey,1 JM González-Méijome11Clinical and Experimental Optometry Research Laboratory, Center of Physics (Optometry, School of Sciences, University of Minho, Braga, 2Opticlinic, Lisboa, PortugalBackground: 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, CCT and ACD values, even after correcting ultrasound ACD by subtracting the CCT value obtained with either technology should not be used interchangeably.Keywords: Scheimpflug corneal tomography, ultrasound biometry, ultrasound pachymetry, limits of agreement

  14. Response of Sunflower to Nitrogen Application and Water in Northern Brazil Alfisol

    Directory of Open Access Journals (Sweden)

    João Tadeu de Lima Oliveira

    2012-01-01

    Full Text Available Decline in crop yield has been a problem in Northern Brazil region due to inherent low fertility status of the soils and water deficit of different crops. In order to study the effects of nitrogen and available soil water levels on growth and yield components of sunflower, an experiment was carried out from March to June 2010 in a semi-controlled greenhouse condition of the Federal University of Campina Grande, Paraiba, Brazil using Alfisol soil. The treatments were arranged as a completely randomized design, in a 4×4 factorial experiment (four nitrogen levels and four available soil water levels, in triplicates, total of 48 experimental units. The nitrogen levels in kg/ha were 0; 60; 80 and 100 which was added as urea; the available soil water levels were 55; 70; 85 and 100%. The results of this research indicate that nitrogen had a significant effect only on leaf area at 40 DAS and % achenes viable. The effect of available soil water on sunflower cv. Embrapa 122/V-2000 biometry and the yield showed that there were significant differences, on average, in all growth traits (stem height and diameter at 40 and 60 DAS, in leaf number at 40 DAS, in leaf area at 40 and 60 DAS and in all production traits. The biometry and yield response to available soil water of different crops is of major importance in production planning. In this study, the maximum biometry and yield response factor of sunflower was determined at 100 % of available soil water.

  15. BIOMETRIA, DORMÊNCIA E VIABILIDADE DE SEMENTES DE SENNA MACRANTHERA

    OpenAIRE

    Marilda Torres Capucho; Luciana Gomes Barbosa; José Carlos Lopes

    2012-01-01

    With the aim of study biometry, dormancy and viability of Sena macranthera seeds. The studies were accomplished out at the Seed Laboratory from the Center of Agrarian Sciences of Federal University of Espírito Santo (CCA-UFES), and on the farm Tecnotruta, in the Serra do Caparaó. Were carried two experiments in statistical completely randomized, with four replications of 25 seeds. At first, the treatments used were: immersion in water at 70 ºC for 1, 2 and 3 minutes; immersion in water at 90 ...

  16. Doppler study of middle cerebral artery and umbilical artery in biometrically suspected intra uterine growth restricted pregnancies

    Directory of Open Access Journals (Sweden)

    Rajesh Kuber

    2016-02-01

    Conclusions: Doppler imaging is of value for monitoring pregnancies complicated with IUGR because it can provide indirect evidence of foetal compromise and is known to improve outcome of high risk pregnancies. Doppler evaluation is complementary to all other surveillance modalities. Because the changes in umbilical, uterine and MCA strongly correlate with pregnancy outcome in growth restricted foetuses the use of foetal biometry and Doppler examination is recommended in all cases of suspected IUGR cases. [Int J Res Med Sci 2016; 4(2.000: 403-414

  17. Anesthesia of silver catfish with eugenol: time of induction, cortisol response and sensory analysis of fillet Anestesia de jundiás com eugenol: tempo de indução, resposta ao cortisol e análise sensorial do filé

    OpenAIRE

    Mauro Alves da Cunha; Carla Cristina Zeppenfeld; Luciano de Oliveira Garcia; Vania Lucia Loro; Milene Braga da Fonseca; Tatiana Emanuelli; Ana Paula Lima Veeck; Carlos Eduardo Copatti; Bernardo Baldisserotto

    2010-01-01

    The aim of this study was to identify the time of anesthetic induction and recovery of silver catfish (Rhamdia quelen) exposed to eugenol. It was also determined the efficacy of the anesthetic as a stress reducing agent and performed a sensory analysis of the fillets from fish exposed to this substance. The silver catfish were exposed to air for 1min to carry out biometry, and blood was collected at 0, 1 and 4 hours later. Eugenol can be used in the range of 20-50mg L-1 for anesthetic inducti...

  18. WHO multicentre study for the development of growth standards from fetal life to childhood

    DEFF Research Database (Denmark)

    Merialdi, Mario; Widmer, Mariana; Gülmezoglu, Ahmet Metin;

    2014-01-01

    backgrounds. The study will select pregnant women of high-middle socioeconomic status with no obvious environmental constraints on growth (adequate nutritional status, non-smoking), and normal pregnancy history with no complications likely to affect fetal growth. The study will be conducted in centres from...... ten developing and industrialized countries: Argentina, Brazil, Democratic Republic of Congo, Denmark, Egypt, France, Germany, India, Norway, and Thailand. At each centre, 140 pregnant women will be recruited between 8 + 0 and 12 + 6 weeks of gestation. Subsequently, visits for fetal biometry...

  19. Dosagem hormonal e avaliação testicular em cachorro-do-mato (Cerdocyun thous) utilizando diferentes protocolos anestésicos

    OpenAIRE

    N.P. Souza; L.D'A Guimarães; R.C.R. Paz

    2011-01-01

    Tree Cerdocyon thous males received different anesthesia protocols: tiletamine-zolazepan (7mg/kg); ketamine-xylazine (12 and 1mg/kg); ketamine-xylazine-atropin (12, 1.0 and 0.04mg/kg), ketamine-midazolam (12 and 0.5mg/kg) and ketamine-acepromazine (12 and 0.1mg/kg) for semen collection by electroejaculation, testosterone hormonal dosages, fine needle aspiration cytology (FNAC), testicular manual evaluation, biometry by caliper and ultrassonography (US). The ejaculates collected by electroejac...

  20. ROAD DETECTION USING MORPHOLOGICAL OPERATIONS IN A COMPLEX SCENARIO

    Directory of Open Access Journals (Sweden)

    Neetha Joseph

    2013-11-01

    Full Text Available Image classification is an important research area in computer vision. Organizing images into semantic categories can be extremely useful for searching and browsing through large collections of images. It is a challenging task in various application domains, including satellite image classification, syntactic pattern recognition, medical diagnosis, biometry, video surveillance, vehicle navigation, industrial visual inspection, robot navigation etc. There are different approaches for image classification and imbalanced data classification. This paper provides a review of different methods for classifying images and imbalanced data classification. This paper proposes a method for road detection and highlights the importance of the imbalanced data classification in detecting the road in a complex scenario.

  1. The Effect of Gestational Age on Axial Length of the Eyes of Premature Infants

    OpenAIRE

    Mehmet Ali Sekeroglu

    2016-01-01

    Aim: The aim of the present study is to evaluate the axial length of the eyes of premature infants without retinopathy of prematurity and to document the relationship with gestational age and changes as infants grew-up. Material and Method: The axial length of the eyes were measured by using a mobile A-scan ultrasonographic biometry device just before the first retinopathy of prematurity screening examination and 4-weeks thereafter. Results: One-hundred and thirty-six infants with a mean gest...

  2. Neišnešiotų vaikų trumparegių akių ultragarsinė biometrija

    OpenAIRE

    Kriaučiūnienė, Loresa; Paunksnis, Alvydas; Aukštikalnienė, Rimtautė

    2006-01-01

    Background. The aim of our work was to determine changes in opticalanatomical elements of myopic eyes of full-term and premature children during accommodation by means of precise ultrasonic biometry. Materials and methods. The study was made on healthy full-term children’s eyes with emmetropic refraction (group, n = 20); full-term 1st degree myopic children’s eyes with refraction from -1.0 D to -3.0 D (group 2, n = 16), and premature children’s myopic eyes with refraction -1.0 D to -3.0 D...

  3. Arcellaceans and pollen/spores of a late Harappan settlement near Porbandar, west coast of India: Implications for palaeoecology and environmental monitoring

    Digital Repository Service at National Institute of Oceanography (India)

    Farooqui, A.; Gaur, A.S.

    . J. G., S?nia, G. B. C. and Lopes, S. G. B. C., Morpho l og y, biometry, ecology and biogeography of five species of Di f flugia Leclerc, 1815 (Arcel linida: Difflugiidae), from Tiete River, Brazil. Acta Protozool ., 2006, 45 , 77 ? 90. 9... Paran? River floodplain, State of Mato Grosso do Sul, Brazil: II. Family Difflugiidae. Stud. Neotrop. Fauna Environ. , 1996, 31 , 179 ? 192. 11. Lansac - T?ha, F. A., Velho, L. F. M., Zimmermann - Callegari, M. C., Bonecker, C. C...

  4. Ultrasonic Evaluation of the Lens Thickness to Axial Length Factor in Primary Closure Angle Glaucoma

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    Ultrasonic biometry was done in 232 normal eyes and 138 eyes with primary angle closure glaucoma (ACG), using Ultrascan Digital B System IV (10 MHz). The ratio between the lens thickness and the axial length (lens thickness to axial length factor, LAF) was evaluated as a biometric index for assessing the eye with primary ACG in Chinese. LAF of 2.00 was found to be ideal point of demarcation between ACG and normal eyes (i.e., lens thickness equals to 1/5 of axial length). It appears that LAF is helpful i...

  5. Conference on Bootstrapping and Related Techniques

    CERN Document Server

    Rothe, Günter; Sendler, Wolfgang

    1992-01-01

    This book contains 30 selected, refereed papers from an in- ternational conference on bootstrapping and related techni- ques held in Trier 1990. Thepurpose of the book is to in- form about recent research in the area of bootstrap, jack- knife and Monte Carlo Tests. Addressing the novice and the expert it covers as well theoretical as practical aspects of these statistical techniques. Potential users in different disciplines as biometry, epidemiology, computer science, economics and sociology but also theoretical researchers s- hould consult the book to be informed on the state of the art in this area.

  6. Dynamics of amino acids in the conditioning film developed on glass panels immersed in the surface seawaters of Dona Paula Bay

    Digital Repository Service at National Institute of Oceanography (India)

    Bhosle, N.B.; Garg, A.; Fernandes, L.; Citon, P.

    following the methods of Parsons et al. (1984) and Smart et al. (1983), respectively. The precision of both the methods based on replicate analysis was better than 7%. 100 N. B. Bhosle et al. Amino acid analysis. Glass panels with the adsorbed conditioning...:405–415. Sokal RR, Rohlf FJ. 1981. Biometry: the principals and practice of statistics in biological research. San Francisco: W H Freeman & Co. Smart MM, Kada RG, Donnermeyer GN. 1983. Determination of total nitrogen in sediments and plants using persulphate...

  7. Congenital mesoblastic nephroma: case report

    OpenAIRE

    POLAT, Mesut; Arisoy, Resul; Erdoğdu, Emre; ANGIN, A.Doğukan; TUĞRUL, Ahmet Semih

    2014-01-01

    Aim: Aim of the report is discuss the case who was prenatally diagnosed as congenital mesoblastic nephroma and  postnatal managenent. Case: We reported a case of 27 year old gravida 3, parity 1, abortion 1 referred to our clinic with the diagnosis of preterm labour and polihydramniosis at 34. gestational week. The ultrasonografic examination of the patient, with no antenatal follow up before, revealed a fetal biometry of 33 weeks and polyhydramniosis. A 63x66 mm solid mass with reguler border...

  8. Evaluation of the Repeatability and the Reproducibility of AL-Scan Measurements Obtained by Residents

    Directory of Open Access Journals (Sweden)

    Mehmet Kola

    2014-01-01

    Full Text Available Purpose. To assess the repeatability and reproducibility of ocular biometry and intraocular lens (IOL power measurements obtained by ophthalmology residents using an AL-Scan device, a novel optical biometer. Methods. Two ophthalmology residents were instructed regarding the AL-Scan device. Both performed ocular biometry and IOL power measurements using AL-Scan, three times on each of 128 eyes, independently of one another. Corneal keratometry readings, horizontal iris width, central corneal thickness, anterior chamber depth, pupil size, and axial length values measured by both residents were recorded together with IOL power values calculated on the basis of four different IOL calculation formulas (SRK/T, Holladay, and HofferQ. Repeatability and reproducibility of the measurements obtained were analyzed using the intraclass correlation coefficient (ICC. Results. Repeatability (ICC, 0.872-0.999 for resident 1 versus 0.905-0.999 for resident 2 and reproducibility (ICC, 0.916-0.999 were high for all biometric measurements. Repeatability (ICC, 0.981-0.983 for resident 1 versus 0.995-0.996 for resident 2 and reproducibility were also high for all IOL power measurements (ICC, 0.996 for all. Conclusions. The AL-Scan device exhibits good repeatability and reproducibility in all biometric measurements and IOL power calculations, independent of the operator concerned.

  9. Replacement of soybean meal with babassu meal in rations for broilers from 22 to 42 days old

    Directory of Open Access Journals (Sweden)

    Mônica Calixto da Silva

    2015-04-01

    Full Text Available The objective this work was to evaluate the technical and economic viability of the substitution level of soybean meal by babassu meal in rations to broiler from 22 to 42 days old. It was used 80 male broiler chicks at one day of age, distributed into complete random designs with four treatments (0, 10, 20 e 30% substituition of soybean meal by babassu meal and five repetitions of four broilers each. Were evaluated the performance (weight dain, feed intake and feed conversion, carcass and cuts, organ biometry, feed cost per kilogram body weight and gross margin. To verify the relationship of cost of replacing soybean meal with pie babassu, inequalities were established. The substitution level of soybean meal by babassu meal had no influence (P>0,05 any of the performance characteristics, wich showed the technical viability of substituting up to 30%. Similarly, there was no affect on carcass yield, cuts weight and organ biometry. The cust less with feed per kg for chicken produced and the higher gross margin were obtained from chickens fed diets with 0% babassu meal. The increased of substitution level soybean meal by babassu meal in ration for broilers from 22 to 42 days old proved unviable economically, however, the inequalities produced can be useful in practical situations.

  10. Dosagem hormonal e avaliação testicular em cachorro-do-mato (Cerdocyun thous utilizando diferentes protocolos anestésicos

    Directory of Open Access Journals (Sweden)

    N.P Souza

    2011-10-01

    Full Text Available Tree Cerdocyon thous males received different anesthesia protocols: tiletamine-zolazepan (7mg/kg; ketamine-xylazine (12 and 1mg/kg; ketamine-xylazine-atropin (12, 1.0 and 0.04mg/kg, ketamine-midazolam (12 and 0.5mg/kg and ketamine-acepromazine (12 and 0.1mg/kg for semen collection by electroejaculation, testosterone hormonal dosages, fine needle aspiration cytology (FNAC, testicular manual evaluation, biometry by caliper and ultrassonography (US. The ejaculates collected by electroejaculation showed urine contamination making impossible the semen evaluation. The M±PD of serum testosterone was 0.74±0.2ng/mL. The cell types found in FNAC were: spermatogonia 13.3±11.5%, primary spermatocytes 5.5±1.1%, secondary spermatocytes 5.5±3.9%, early spermatids 12.8±6.2%, late spermatids 26.2±11.2%, sperm 14.5±4.7% and Sertoli cells 21.8±2.7%. Manual testicular evaluation showed normal consistency of testicles. The M±PD of testicular biometry by caliper was 3.8±1.5cm³ and by US was 1.1±0.3cm³. The animals showed normal spermatogenesis with normal spermatozoa observed in FNAC and normal testicular US.

  11. [Ophthalmologic ultrasound diagnosis--current training programs in Germany, Austria, Switzerland].

    Science.gov (United States)

    Trier, H G

    1982-06-01

    In these three countries the application of diagnostic ultrasound in ophthalmology is restricted, with few exceptions, only to institutions having access to in-patients. This situation is based on the organization of medical care and does not depend on the technical evolution of the equipment. Consequently the annual rate of trainees in ophthalmic ultrasound is relatively low, but a comprehensive training programme is needed in this field. The requisite training subjects are described. They include a technical and a clinical programme for both pulse-echo (A, B, M, D mode) and Doppler techniques as applied for biometry as well as for tissue and vascular examination. Some data are given regarding training facilities, aids and courses in the three countries. The concept and organization of a 5-day course (Bonn/Würzburg Course, Directors: W. Buschmann/H.G. Trier) is described in greater detail. For ophthalmic ultrasonography, testing and calibration of system parameters both for equipment and transducers is necessary for obtaining reliable and reproducible results. Examples are given for the organization of technical training in the practical course. The 1981 guidelines of the "Kassenärztliche Bundesvereinigung", Cologne, are discussed. These regulations define minimum requirements for both ultrasonic training and equipment in the FRG. Finally, a few controversial aspects of the teaching (quality assurance, role of biometry) are mentioned. PMID:9417602

  12. [Case of intrauterine retardation and fetal death during labor].

    Science.gov (United States)

    Frundeva, B; Dimitrova, V; Museva, A; Dimitrov, A; Zlatkov, V

    2014-01-01

    The case concerns to a 37 years old pregnant woman with a history of three miscarriages. Ultrasound biometry in early pregnancy corresponds to the term calculated according the last menstrual period (LMP). At 37 week of gestation was determined retardation of 5 weeks. Doppler velocimetry and quantity of amniotic fluid were in normal ranges and the pregnant refused hospitalization. She was admitted to the hospital three days after the appointed term without uterine contractions. The fetal ultrasound biometry meets 33 weeks and the Doppler examination of a. umbilicalis found resistance index (RI) of the upper limit of normal. The cardiotocography record shows: baseline fetal heart rate--143 beats/min, good variability and reactivity. There was one deceleration for 3 minutes, and then the recording returns to normal. Re-monitoring after 30 minutes establishes of a periodic decelerations and a tendency to bradycardia with reserved variability. At the start of the emergency Cesarean Section fetal heart beats are single. The delivered babe was with Apgar O. The reanimation was not successful and the fetus died. From the autopsy signs of severe asphyxia. In conclusion, it can be assumed that in strongly retarded fetuses, cardiotocography recording and Doppler velosimetry are not sufficiently reliable methods for continued monitoring. In late-onset and severe intrauterine growth retardation (IUGR) desirable delivery time is after reaching biological maturity at 36-37 week. PMID:25558672

  13. OPHTHALMIC REFERENCE VALUES AND LESIONS IN TWO CAPTIVE POPULATIONS OF NORTHERN OWLS: GREAT GREY OWLS (STRIX NEBULOSA) AND SNOWY OWLS (BUBO SCANDIACUS).

    Science.gov (United States)

    Wills, Sarah; Pinard, Chantale; Nykamp, Stephanie; Beaufrère, Hugues

    2016-03-01

    This study established ophthalmic reference values and characterized ocular lesions in two captive populations of boreal owls, including 46 eyes of 23 great grey owls (Strix nebulosa) and 38 eyes from 19 snowy owls (Bubo scandiacus). A complete ophthalmologic exam was conducted, including neuro-ophthalmic reflexes, Schirmer tear test I (STT-I), intraocular pressure (IOP) using rebound tonometry, fluorescein staining, horizontal corneal measurements using Jameson calipers, direct and indirect ophthalmoscopy, and ocular ultrasound biometry. Eyes with an STT of owls and snowy owls (IOP: 9.6 ± 2.6 mm Hg and 9.1 ± 1.9 mm Hg, respectively, and STT-I: 9.8 ± 2.8 mm/min and 9.8 ± 2.4 mm/min, respectively). However, snowy owls overall had a significantly larger eye than did great grey owls, reflected in corneal diameters (23.4 ± 1 vs. 20.0 ± 0.8 mm, respectively) and sonographic biometry. In both species, the most common ocular lesions included keratitis, cataracts, chorioretinal lesions, and abnormal pecten. Establishment of reference ocular parameters will help wildlife veterinarians and rehabilitators determine an appropriate treatment plan and will aid in correctly identifying the presence of ocular disease. PMID:27010284

  14. More than four decades of medical informatics education for medical students in Germany. New recommendations published.

    Science.gov (United States)

    Winter, A; Hilgers, R-D; Hofestädt, R; Knaup-Gregori, P; Ose, C; Trimmer, A

    2013-01-01

    The publication of German competency-based learning objectives "Medical Informatics" for undergraduate medical education gives reason to report on more publications of the German journal GMS Medical Informatics, Biometry and Epidemiology ( MIBE ) in Methods. The publications in focus deal with support of medical education by health and biomedical informatics, hospital information systems and their relation to medical devices, transinstitutional health information systems and the need of national eHealth strategies, epidemiological research on predicting high consumption of resources, and with the interaction of epidemiologists and medical statisticians in examining mortality risks in diabetes, in genome wide association studies and in dealing with limits and thresholds. This report is the beginning of an annual series intending to support better international cooperation to achieve good information as a basis for good medicine and good healthcare.

  15. Présentation de la Faculté des Sciences Agronomiques de l'Université du Burundi

    Directory of Open Access Journals (Sweden)

    Cordier, Y.

    1991-01-01

    Full Text Available The project "Faculty of Agricultural Sciences" in Burundi. The Faculty of Agricultural Sciences, University of Burundi, was created in 1976 and organizes the education for the last three years of the course, the first two ones being covered by the Faculty of Sciences. The cooperation with Belgium started same year under the coordination of the Faculty of Agricultural Sciences, Catholic University of Louvain. New buildings are available since 1988, in Bujumbura. Six Belgians are permanently posted for the educational and research programme, together with some volonteers. There are 8 departments (Fertilisation and Agricultural techniques, Animal production, Forestry and Biometries, Plant improvement and Ecology, Plant protection, Rural socio-economics, Technology and Rural engineering, Soil Sciences. Following scientific activities can be mentioned i. a. : rice improvement in altitude swamps, use of local products like fosfates and manure, swamp reclamation, farming Systems, extractible plant products, small ruminants selection, ...

  16. Robust image authentication in the presence of noise

    CERN Document Server

    2015-01-01

    This book addresses the problems that hinder image authentication in the presence of noise. It considers the advantages and disadvantages of existing algorithms for image authentication and shows new approaches and solutions for robust image authentication. The state of the art algorithms are compared and, furthermore, innovative approaches and algorithms are introduced. The introduced algorithms are applied to improve image authentication, watermarking and biometry.    Aside from presenting new directions and algorithms for robust image authentication in the presence of noise, as well as image correction, this book also:   Provides an overview of the state of the art algorithms for image authentication in the presence of noise and modifications, as well as a comparison of these algorithms, Presents novel algorithms for robust image authentication, whereby the image is tried to be corrected and authenticated, Examines different views for the solution of problems connected to image authentication in the pre...

  17. Health care transition in Germany – standardization of procedures and improvement actions

    Directory of Open Access Journals (Sweden)

    Pieper C

    2011-07-01

    Full Text Available Claudia Pieper, Izabela KolankowskaInstitute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, Essen, North Rhine-Westphalia, GermanyAbstract: Previous studies have assessed an increase in the number of people in need and emphasized the advantages of structured discharge management and health care transition. Therefore, our study evaluated the status quo of transition in a major German city after standardization of procedures and implementation of standard forms. Satisfaction with handling of standard forms and improvement of procedures was evaluated. Additionally, patients who had recently been hospitalized were asked about the hospital discharge process. The results show that the recent efforts of standardization helped to improve interface management for health care workers and patients and showed further improvement options.Keywords: hospital discharge process, standard forms, long-term care, aftercare

  18. An Observed Voting System Based On Biometric Technique

    Directory of Open Access Journals (Sweden)

    B. Devikiruba

    2015-08-01

    Full Text Available ABSTRACT This article describes a computational framework which can run almost on every computer connected to an IP based network to study biometric techniques. This paper discusses with a system protecting confidential information puts strong security demands on the identification. Biometry provides us with a user-friendly method for this identification and is becoming a competitor for current identification mechanisms. The experimentation section focuses on biometric verification specifically based on fingerprints. This article should be read as a warning to those thinking of using methods of identification without first examine the technical opportunities for compromising mechanisms and the associated legal consequences. The development is based on the java language that easily improves software packages that is useful to test new control techniques.

  19. The Mantel-Haenszel procedure. 50 years of the statistical method for confounders control

    Directory of Open Access Journals (Sweden)

    Alice Mannocci

    2009-12-01

    Full Text Available The Mantel Haenszel procedure represents a simple and useful tool to obtain estimates of association, adjusted for the effect of one or more confounders. Nathan Mantel (1919-2002 was a biostatistician. In 1947 he was hired as a member of a new biometry group at the National Cancer Institute (NCI in the National Institute of Health (NIH, Maryland, and in this time he collaborated with William M Haenszel (1910-1998. Haenszel, who was a sociologist, mathematician and statistician, had been working on interpreting the case-control studies of the connection between smoking and lung cancer, requested Mantel’s assistance on how to analyze the retrospective data. In the 1959 they published the “Statistical aspects of the analysis of data from retrospective studies of disease” on the Journal of the National Cancer Institute [1].

  20. Real-Time Detection and Measurement of Eye Features from Color Images.

    Science.gov (United States)

    Borza, Diana; Darabant, Adrian Sergiu; Danescu, Radu

    2016-01-01

    The accurate extraction and measurement of eye features is crucial to a variety of domains, including human-computer interaction, biometry, and medical research. This paper presents a fast and accurate method for extracting multiple features around the eyes: the center of the pupil, the iris radius, and the external shape of the eye. These features are extracted using a multistage algorithm. On the first stage the pupil center is localized using a fast circular symmetry detector and the iris radius is computed using radial gradient projections, and on the second stage the external shape of the eye (of the eyelids) is determined through a Monte Carlo sampling framework based on both color and shape information. Extensive experiments performed on a different dataset demonstrate the effectiveness of our approach. In addition, this work provides eye annotation data for a publicly-available database. PMID:27438838

  1. State of the Art in Pediatric Cataract Surgery.

    Science.gov (United States)

    Nischal, Kanwal Ken

    2016-01-01

    Pediatric cataract surgery has evolved dramatically in the past 10 years. Our understanding of the child's eye both in terms of tissue mechanics, neurobiological plasticity and physiological growth has allowed better and better surgical outcomes. The fact remains that the younger the child - infants especially - the more difficult the surgery. It is also true to say that not only is a child's eye not a small adult eye, but also that the child him- or herself is not a small adult. The importance of this statement is evident when we discuss the effects of anesthesia and fluid input in infants during infant cataract surgery. This chapter discusses the factors that should help give a child the best possible outcome after cataract surgery including timing of surgery, type of operation, biometry, the size and type of intraocular lens material , postoperative refraction, operative considerations, wound size and type, capsule management, anterior vitrectomy technique, wound closure and viscoelastic removal and perioperative medications. PMID:27043389

  2. Using complex networks towards information retrieval and diagnostics in multidimensional imaging.

    Science.gov (United States)

    Banerjee, Soumya Jyoti; Azharuddin, Mohammad; Sen, Debanjan; Savale, Smruti; Datta, Himadri; Dasgupta, Anjan Kr; Roy, Soumen

    2015-01-01

    We present a fresh and broad yet simple approach towards information retrieval in general and diagnostics in particular by applying the theory of complex networks on multidimensional, dynamic images. We demonstrate a successful use of our method with the time series generated from high content thermal imaging videos of patients suffering from the aqueous deficient dry eye (ADDE) disease. Remarkably, network analyses of thermal imaging time series of contact lens users and patients upon whom Laser-Assisted in situ Keratomileusis (Lasik) surgery has been conducted, exhibit pronounced similarity with results obtained from ADDE patients. We also propose a general framework for the transformation of multidimensional images to networks for futuristic biometry. Our approach is general and scalable to other fluctuation-based devices where network parameters derived from fluctuations, act as effective discriminators and diagnostic markers.

  3. Using complex networks towards information retrieval and diagnostics in multidimensional imaging

    Science.gov (United States)

    Banerjee, Soumya Jyoti; Azharuddin, Mohammad; Sen, Debanjan; Savale, Smruti; Datta, Himadri; Dasgupta, Anjan Kr; Roy, Soumen

    2015-12-01

    We present a fresh and broad yet simple approach towards information retrieval in general and diagnostics in particular by applying the theory of complex networks on multidimensional, dynamic images. We demonstrate a successful use of our method with the time series generated from high content thermal imaging videos of patients suffering from the aqueous deficient dry eye (ADDE) disease. Remarkably, network analyses of thermal imaging time series of contact lens users and patients upon whom Laser-Assisted in situ Keratomileusis (Lasik) surgery has been conducted, exhibit pronounced similarity with results obtained from ADDE patients. We also propose a general framework for the transformation of multidimensional images to networks for futuristic biometry. Our approach is general and scalable to other fluctuation-based devices where network parameters derived from fluctuations, act as effective discriminators and diagnostic markers.

  4. Posterior fossa malformations: main features and limits in prenatal diagnosis

    Energy Technology Data Exchange (ETDEWEB)

    Garel, Catherine [Hopital d' Enfants Armand-Trousseau, Department of Radiology, Paris (France)

    2010-06-15

    Posterior fossa (PF) malformations are commonly observed during prenatal screening. Their understanding requires knowledge of the main steps of PF development and knowledge of normal patterns in US and MR imaging. The vast majority of PF malformations can be strongly suspected by acquiring a midline sagittal slice and a transverse slice and by systematically scrutinizing the elements of the PF: cerebellar vermis, hemispheres, brainstem, fourth ventricle, PF fluid spaces and tentorium. Analysis of cerebellar echogenicity and biometry is also useful. This review explains how to approach the diagnosis of the main PF malformations by performing these two slices and answering six key questions about the elements of the PF. The main imaging characteristics of PF malformations are also reviewed. (orig.)

  5. Evaluation of the Normal Fetal Kidney Length and Its Correlation with Gestational Age

    Directory of Open Access Journals (Sweden)

    Farrokh Seilanian Toosi

    2013-05-01

    Full Text Available A true estimation of gestational age (GA plays an important role in quality maternity care and scheduling the labor date. This study aimed to evaluate the normal fetal kidney length (KL and its correlation with GA. A cross-sectional study on 92 pregnant women between 8th and 10th week of gestation with normal singleton pregnancy underwent standard ultrasound fetal biometry and kidney length measurement. univariate and multivariate linear regression analysis was used to create a predictive equation to estimate GA on the KL and fetobiometry parameters. A significant correlation was found between GA and KL (r=0.83, P<0.002. The best GA predictor was obtained by combining head circumference, fetal biparietal diameter, femur length and KL with a standard error (SE about 14.2 days. Our findings showed that KL measurements combination with other fetal biometric parameters could predict age of pregnancy with a better precision.

  6. Movement of a posterior chamber lens in phakic eyes assessed with partial coherence interferometry

    CERN Document Server

    Koeppl, C M

    2001-01-01

    Purpose: the implantable contact lens (ICL sup T sup M , STAAR Surgical), a posterior chamber phakic IOL, provides an effective refraction correction among high myopic and hypermetropic patients. However, the cause of cataract formation in some of these patients is still unclear. Mechanical contact between the ICL and the crystalline lens and inadequate aqueous circulation in the prelenticular space may cause subcapsular opacification. To get a better understanding of the pathogenesis of cataract formation after ICL implantation the distance changes between the ICL and the crystalline lens under different conditions were investigated. Methods: in an open pilot study, 13 eyes of 11 myopic and 2 hyperopic patients with a mean age of 38 years (range: 19 to 53 years) were examined at least 6 months after ICL implantation. Using a non-invasive, high resolution biometry technique, partial coherence interferometry (PCI), which has unprecedented precision in the micrometer region, distance changes between the ICL and...

  7. Description of the process used to create 1992 Hanford Morality Study database

    Energy Technology Data Exchange (ETDEWEB)

    Gilbert, E.S.; Buchanan, J.A.; Holter, N.A.

    1992-12-01

    An updated and expanded database for the Hanford Mortality Study has been developed by PNL`s Epidemiology and Biometry Department. The purpose of this report is to document this process. The primary sources of data were the Occupational Health History (OHH) files maintained by the Hanford Environmental Health Foundation (HEHF) and including demographic data and job histories; the Hanford Mortality (HMO) files also maintained by HEHF and including information of deaths of Hanford workers; the Occupational Radiation Exposure (ORE) files maintained by PNL`s Health Physics Department and containing data on external dosimetry; and a file of workers with confirmed internal depositions of radionuclides also maintained by PNL`s Health Physics Department. This report describes each of these files in detail, and also describes the many edits that were performed to address the consistency and accuracy of data within and between these files.

  8. Description of the process used to create 1992 Hanford Morality Study database

    Energy Technology Data Exchange (ETDEWEB)

    Gilbert, E. S.; Buchanan, J. A.; Holter, N. A.

    1992-12-01

    An updated and expanded database for the Hanford Mortality Study has been developed by PNL's Epidemiology and Biometry Department. The purpose of this report is to document this process. The primary sources of data were the Occupational Health History (OHH) files maintained by the Hanford Environmental Health Foundation (HEHF) and including demographic data and job histories; the Hanford Mortality (HMO) files also maintained by HEHF and including information of deaths of Hanford workers; the Occupational Radiation Exposure (ORE) files maintained by PNL's Health Physics Department and containing data on external dosimetry; and a file of workers with confirmed internal depositions of radionuclides also maintained by PNL's Health Physics Department. This report describes each of these files in detail, and also describes the many edits that were performed to address the consistency and accuracy of data within and between these files.

  9. Clinical significance of radioimmunological HPL findings in long-term management of premature delivery risk

    Energy Technology Data Exchange (ETDEWEB)

    Ruckhaeberle, K.E.; Bilek, K.; Viehweg, B.; Kuehndel, K.; Colditz, U.; Baer, G.

    1981-01-01

    Premature birth is not only characterized by premature delivery action but it is ever more frequently interpreted as the disturbed fetoplacental unit syndrome. In an attempt to therapeutically prevent premature delivery the placental function should be monitored. Possible intrauterine survival should be assessed as accurately as possible against extrauterine survival in order that the necessary tocolysis time could be determined. In our observations, clinical significance was studied of radioimmunologically determined HPL values in the serum under tocolysis conditions at premature birth risk on the basis of postnatal classification of the postnatal condition and of the particularity of the adaptation phase of the neonates. The significance of HPL determination in checking the fetoplacental unit during tocolysis should be arrived at while also using other diagnostic techniques, such as oxytocinase or estriol, ultrasound biometry, cardiotocography.

  10. Clinical significance of radioimmunological HPL findings in long-term management of premature delivery risk

    International Nuclear Information System (INIS)

    Premature birth is not only characterized by premature delivery action but it is ever more frequently interpreted as the disturbed fetoplacental unit syndrome. In an attempt to therapeutically prevent premature delivery the placental function should be monitored. Possible intrauterine survival should be assessed as accurately as possible against extrauterine survival in order that the necessary tocolysis time could be determined. In our observations, clinical significance was studied of radioimmunologically determined HPL values in the serum under tocolysis conditions at premature birth risk on the basis of postnatal classification of the postnatal condition and of the particularity of the adaptation phase of the neonates. The significance of HPL determination in checking the fetoplacental unit during tocolysis should be arrived at while also using other diagnostic techniques, such as oxytocinase or estriol, ultrasound biometry, cardiotocography. (author)

  11. Subfoveal Choroidal Thickness in 1323 Children Aged 11 to 12 Years and Association With Puberty

    DEFF Research Database (Denmark)

    Li, Xiao Qiang; Jeppesen, Pia; Larsen, Michael;

    2014-01-01

    PURPOSE: To investigate subfoveal choroidal thickness and ocular- and systemic-associated factors in a population-based cohort of children. METHODS: Cross-sectional, observational study where 1323 healthy 11- and 12-year-old children were examined with enhanced-depth imaging spectral-domain optical...... coherence tomography (EDI-SD-OCT), ocular interferometric biometry, blood pressure manometry, and measurement of height, weight, nonmydriatic refraction, and best-corrected visual acuity. Self-reported stage of pubertal development was classified as Tanner stages 1 through 4. RESULTS: Mean subfoveal...... choroidal thickness was 369 ± 81 μm in girls and 348 ± 72 μm in boys. Longer axial length was associated with a thinner subfoveal choroid (-27.2 [95% confidence interval (CI) -32.7 to -21.7] μm/mm; P thickness between sexes (P = 0...

  12. Choroidal thickness in relation to birth parameters in 11- to 12-year-old children

    DEFF Research Database (Denmark)

    Li, Xiao Q; Munkholm, Anja; Larsen, Michael;

    2015-01-01

    to -1] μm, P = 0.04) compared with appropriate for gestation children. Longer birth length was associated with a thicker subfoveal choroid (2 [1-4] μm/cm, P = 0.005). Macular choroidal thickness at 16 extrafoveal locations was measured in a subset of children and found to have the same associations......PURPOSE: To examine choroidal thickness in a population-based child cohort in relation to birth parameters. METHODS: The Copenhagen Child Cohort 2000 Eye Study examined 1406 children aged 11 to 12 years using enhanced depth imaging spectral-domain optical coherence tomography (EDI-OCT), ocular...... biometry and measurement of height, weight, refraction, and self-reported pubertal development status. Birth parameters were obtained from the Danish Medical Birth Registry. RESULTS: The subfoveal choroid in low birth weight children (

  13. Using complex networks towards information retrieval and diagnostics in multidimensional imaging

    CERN Document Server

    Banerjee, Soumya Jyoti; Sen, Debanjan; Savale, Smruti; Datta, Himadri; Dasgupta, Anjan Kr; Roy, Soumen

    2015-01-01

    We present a fresh and general yet simple approach towards information retrieval in general and diagnostics in particular by applying the theory of complex networks on multidimensional images. We demonstrate a successful use of our method with the time series generated from high content thermal imaging videos of patients suffering from aqueous deficient dry eye (ADDE) disease. The approach is scalable to a device where fluctuation derived network parameters serve as diagnostic markers. Remarkably, network analysis of thermal imaging time series of contact lens users and patients upon whom Laser-Assisted in situ Keratomileusis (Lasik) surgery has been conducted, exhibits pronounced similarities with results obtained from ADDE patients. We also propose a general framework for transformation of multidimensional images to networks for futuristic biometry.

  14. Robust Digital Speech Watermarking For Online Speaker Recognition

    Directory of Open Access Journals (Sweden)

    Mohammad Ali Nematollahi

    2015-01-01

    Full Text Available A robust and blind digital speech watermarking technique has been proposed for online speaker recognition systems based on Discrete Wavelet Packet Transform (DWPT and multiplication to embed the watermark in the amplitudes of the wavelet’s subbands. In order to minimize the degradation effect of the watermark, these subbands are selected where less speaker-specific information was available (500 Hz–3500 Hz and 6000 Hz–7000 Hz. Experimental results on Texas Instruments Massachusetts Institute of Technology (TIMIT, Massachusetts Institute of Technology (MIT, and Mobile Biometry (MOBIO show that the degradation for speaker verification and identification is 1.16% and 2.52%, respectively. Furthermore, the proposed watermark technique can provide enough robustness against different signal processing attacks.

  15. Consumer Health Informatics in the Context of Engaged Citizens and eHealth Services - A New CHI Meta Model.

    Science.gov (United States)

    Wiesner, Martin; Griebel, Lena; Becker, Kurt; Pobiruchin, Monika

    2016-01-01

    Consumer Health Informatics (CHI) is a relatively new and interdisciplinary field in Medical Informatics. It focuses on consumer- rather than professional-centered services. However, the definitions and understanding of a) what is a "consumer"? or b) what is health technology in the context of CHI? and c) what factors and actors influence the usage of eHealth services? vary widely. The CHI special interest group (SIG) - associated with the German Association for Medical Informatics, Biometry and Epidemiology - conducted two workshops in 2015 to improve the common understanding on these topics. The workshop outcomes, the derived CHI-specific meta model and examples how to apply this model are presented in this paper. The model supports the definition of multi-actor contexts, as it not solely reflects the conventional patient-physician relationship but also allows for the description of second health market providers. PMID:27332268

  16. Dinâmica populacional da matrinxã Brycon amazonicus (Characidae na Amazônia Central Population dynamics of matrinxã Brycon amazonicus (Characidae in Central Amazon

    Directory of Open Access Journals (Sweden)

    Leocy C. dos Santos Filho

    2009-06-01

    Full Text Available The matrinxã, Brycon amazonicus (Spix & Agassiz, 1829 is one of the most important fishery resources of the Amazonas state. Its population dynamics in Central Amazon was analyzed based on total landing and biometry data registered in the main landing port of Manaus, between 1994 and 2002. Growth and mortality rates were estimated separately for the rivers Purus, Madeira and Solimões. Differences in size structure and growth curves suggest that different population units exist among these rivers, requiring individualized evaluation and fisheries management strategies. The analysis of the yield per recruit does not indicate overexploitation. However, the highest relative exploitation rate was observed in the Madeira river. The suggested management strategies are related to restrictions to the fishery in the main fishing grounds during the migratory dispersal period, instead of restrictions during reproductive periods.

  17. Cataract Surgery with a Refractive Corneal Inlay in Place

    Directory of Open Access Journals (Sweden)

    N. R. Stojanovic

    2015-01-01

    Full Text Available Purpose. To present a case of cataract surgery performed in a patient with a refractive corneal inlay in place. Methods. A 48-year-old female patient presented to our institute with bilateral cataract. The patient had undergone refractive corneal inlay implantation three years ago in her right, nondominant eye for presbyopia correction. Biometry and intraocular lens (IOL power calculation were performed without removing the inlay. Phacoemulsification and IOL insertion were carried out in both eyes in a usual manner. Results. On day one postoperatively, the patient achieved binocular uncorrected distance visual acuity 20/20 and uncorrected near visual acuity J1. The vision remained stable during the one-year follow-up period. Conclusion. Cataract surgery was performed in a standard manner in a patient with Presbia Microlens corneal inlay in place. Visual outcomes for both near and distance vision were satisfactory.

  18. TECHNICAL DESIGN NOTE: Currency verification by a 2D infrared barcode

    Science.gov (United States)

    Schirripa Spagnolo, Giuseppe; Cozzella, Lorenzo; Simonetti, Carla

    2010-10-01

    Nowadays all the National Central Banks are continuously studying innovative anti-counterfeiting systems for banknotes. In this note, an innovative solution is proposed, which combines the potentiality of a hylemetric approach (methodology conceptually similar to biometry), based on notes' intrinsic characteristics, with a well-known and consolidated 2D barcode identification system. In particular, in this note we propose to extract from the banknotes a univocal binary control sequence (template) and insert an encrypted version of it in a barcode printed on the same banknote. For a more acceptable look and feel of a banknote, the superposed barcode can be stamped using IR ink that is visible to near-IR image sensors. This makes the banknote verification simpler.

  19. Currency verification by a 2D infrared barcode

    International Nuclear Information System (INIS)

    Nowadays all the National Central Banks are continuously studying innovative anti-counterfeiting systems for banknotes. In this note, an innovative solution is proposed, which combines the potentiality of a hylemetric approach (methodology conceptually similar to biometry), based on notes' intrinsic characteristics, with a well-known and consolidated 2D barcode identification system. In particular, in this note we propose to extract from the banknotes a univocal binary control sequence (template) and insert an encrypted version of it in a barcode printed on the same banknote. For a more acceptable look and feel of a banknote, the superposed barcode can be stamped using IR ink that is visible to near-IR image sensors. This makes the banknote verification simpler. (technical design note)

  20. Biometric fingerprint identification

    OpenAIRE

    Ruttkay, Michal

    2016-01-01

    Diplomová práce v první části rozebírá obecně téma biometrie a hodnocení spolehlivosti biometrických systémů. Následně je popsán otisk prstu a jeho anatomické vlastnosti potřebné pro identifikaci osob. Jsou zmíněny druhy snímačů otisku prstu. Pro následnou praktickou realizaci je vysvětleno předzpracování obrazu, metody a postupy identifikace osob využívajících otisk prstu. V praktické části práce je realizován algoritmus pro identifikaci v programovém prostředí Matlab. This master's thesi...

  1. Software pro biometrické rozpoznávání duhovky lidského oka

    OpenAIRE

    Maruniak, Lukáš

    2015-01-01

    V mojej práci sa zaoberám úlohou rozpoznania ľudskej dúhovky zo snímku za pomoci použitia evolučných algoritmov. Práca sa v úvode zaoberá otázkou biometrie, jej významom a základnými pojmami, s ktorými sa v texte neskor stretávam. Následne popisujem proces rozpoznania dúhovky ako aj teóriu evolučných algoritmov. V implementačnej časti popisujem návrh a implementáciu riešenia detekcie dúhovky za pomoci evolučných algoritmov, pričom kladiem doraz na detekciu okrajov zreničky a dúhovky....

  2. A case of successful pregnancy in a ewe with uterus didelphys.

    Science.gov (United States)

    Carr, D J; Aitken, R P; Milne, J S; David, A L; Wallace, J M

    2013-10-01

    Uterus didelphys is a rare congenital abnormality of the reproductive tract. Although it occurs in various species, there are no published reports describing pregnancy outcome in association with this abnormality. Herein we describe a case of successful unilateral singleton pregnancy in a ewe incidentally found to have uterus didelphys during the course of a biomedical research study. The pregnancy was established using assisted reproductive techniques and interrupted in late gestation, at which point the abnormality was identified. Serial ultrasound assessment of foetal biometry revealed a normal foetal growth trajectory. Despite a 45% reduction in placentome number, total placentome weight was near normal secondary to compensatory placentome growth and development. To our knowledge, this is the first detailed report of normal foetal growth in an animal with uterus didelphys and illustrates the ability of the ovine placenta to adapt to a reduced number of placentomes and maintain foetal nutrient supply. PMID:23772768

  3. Wrong intraocular lens events-what lessons have we learned? A review of incidents reported to the National Reporting and Learning System: 2010-2014 versus 2003-2010.

    Science.gov (United States)

    Steeples, L R; Hingorani, M; Flanagan, D; Kelly, S P

    2016-08-01

    PurposeTo identify the causal factors in wrong intraocular lens (IOL) events from a national data set and to compare with similar historical data (2003-2010) prior to mandatory checklist use, for the purpose of developing strategies to prevent never events.MethodsData from wrong IOL patient safety incidents (PSIs) submitted to the National Reporting and Learning System (2010-2014) were reviewed by thematic analysis and compared with the data previously collected by the group using the same methodology.ResultsOne hundred and seventy eight wrong IOL PSIs were identified. The contributory factors included: transcription errors (n=26); wrong patient biometry (n=21); wrong IOL selection (n=16); changes in planned procedure (n=16); incorrect IOL brought into theatre (n=11); left/right eye selection errors (n=9); communication errors (n=9); and positive/negative IOL power errors (n=9). In 44 PSIs, no causal factor was reported, limiting the learning value of such reports. Compared with the data from previous years, biometry errors were much reduced but IOL transcription and documentation errors were greater, particularly if further checks did not refer to the original source documentation. IOL exchange surgery was reported in 45 cases.ConclusionsThe selection and implantation of the correct IOL is a complex process which is not adequately addressed by existing checking procedures. Despite the introduction of surgical checklists, wrong IOL incidents continue to occur and are probably under-reported. Human or behavioural factors are heavily implicated in these errors and need to be addressed by novel approaches, including simulation training. There is also scope to further improve the quality and detail of incident reporting and analysis to enhance patient safety.

  4. Antioxidant activity in plasma and rumen papillae development in lambs fed fermented apple pomace.

    Science.gov (United States)

    Rodríguez-Muela, C; Rodríguez, H E; Arzola, C; Díaz-Plascencia, D; Ramírez-Godínez, J A; Flores-Mariñelarena, A; Mancillas-Flores, P F; Corral, G

    2015-05-01

    The effect of fermented apple pomace (FAP) on animal health, antioxidant activity (AA), hematic biometry (HBm) and the development of ruminal epithelium were investigated in a study with 24 finishing lambs (BW = 25.4 ± 3.3 Kg). Lambs were grouped by sex (12 male and 12 female) and fed (n = 6 per group of treatment) a basal fattening diet (Control diet, T1) or the basal diet supplemented to include 10.91% of fermented apple pomace (FAP diet, T2). The animals were kept 56 d in individual metabolic cages, with ad libitum access to water and feed. Two blood samples were collected from each animal on d 0, 28, and 56 to determine AA in plasma and hematic biometry (HBm). Four samples of ruminal tissue were taken postmortem to evaluate the development of ruminal epithelium based on the length (LP) and width (WP) of papillae. AA and HBm data were analyzed with a mixed model (fixed effects: diet, sampling, sex, and their interaction; using the experimental unit nested in the effect of the diet as the random effect). LP and WP were analyzed with a hierarchical model, as simple and nested effects in the sampling site, where the fixed effects were the diet and the sex of the animal and their interaction. There was an effect of diet on AA, which was higher (P animals in the experiment, with a marked increased (P 0.05) for the other indicators of HBm. Males' LP was higher in T2 than in T1 (P benefits on animal health and the development of rumen epithelium by improving antioxidant activity in plasma and stimulating the growth of papillae. PMID:26020331

  5. Wrong intraocular lens events-what lessons have we learned? A review of incidents reported to the National Reporting and Learning System: 2010-2014 versus 2003-2010.

    Science.gov (United States)

    Steeples, L R; Hingorani, M; Flanagan, D; Kelly, S P

    2016-08-01

    PurposeTo identify the causal factors in wrong intraocular lens (IOL) events from a national data set and to compare with similar historical data (2003-2010) prior to mandatory checklist use, for the purpose of developing strategies to prevent never events.MethodsData from wrong IOL patient safety incidents (PSIs) submitted to the National Reporting and Learning System (2010-2014) were reviewed by thematic analysis and compared with the data previously collected by the group using the same methodology.ResultsOne hundred and seventy eight wrong IOL PSIs were identified. The contributory factors included: transcription errors (n=26); wrong patient biometry (n=21); wrong IOL selection (n=16); changes in planned procedure (n=16); incorrect IOL brought into theatre (n=11); left/right eye selection errors (n=9); communication errors (n=9); and positive/negative IOL power errors (n=9). In 44 PSIs, no causal factor was reported, limiting the learning value of such reports. Compared with the data from previous years, biometry errors were much reduced but IOL transcription and documentation errors were greater, particularly if further checks did not refer to the original source documentation. IOL exchange surgery was reported in 45 cases.ConclusionsThe selection and implantation of the correct IOL is a complex process which is not adequately addressed by existing checking procedures. Despite the introduction of surgical checklists, wrong IOL incidents continue to occur and are probably under-reported. Human or behavioural factors are heavily implicated in these errors and need to be addressed by novel approaches, including simulation training. There is also scope to further improve the quality and detail of incident reporting and analysis to enhance patient safety. PMID:27174380

  6. B-mode and Doppler sonography of the mammary glands in dairy goats for mastitis diagnosis.

    Science.gov (United States)

    Santos, V J C; Simplício, K; Sanchez, D; Coutinho, L; Teixeira, P; Barros, F; Almeida, V; Rodrigues, L; Bartlewski, P; Oliveira, M; Feliciano, M; Vicente, W

    2015-04-01

    This study aimed to evaluate the sonographic characteristics of the udder and teats and to determine the Doppler indexes of mammary artery in healthy and undergoing subclinical and clinical mastitis goats. Thirty animals among Saanen and Alpine Brown goats were arranged in three groups, healthy goats (HG), goats with subclinical mastitis (SMG) and goats with clinical mastitis (CMG). Using the B-mode, the sonographic characteristics (echotexture and echogenicity) and biometry (diameter and area of the udder cistern, diameter and area of the teat cistern and thickness of the teat wall) were evaluated. Using Doppler ultrasonography, the vascular indexes of the mammary artery were obtained. It was observed hyperechogenicity with solid component in the gland cistern when comparing animals with clinical mastitis and healthy mammary tissue. Regarding the echotexture of the breast tissue, there was heterogeneity in the mammary parenchyma on the three groups, for the milk, it was observed homogeneity for animals on HG and SMG and heterogeneity for animals on CMG. Grey-scale quantitative assessment revealed increase in echogenicity (mean value) for all the structures when comparing the three groups. Biometry did not reveal statistical difference between groups, for none of the evaluated structures. Doppler examination of the mammary artery showed the decrease of end diastolic velocity and raise of pulsatility index between groups. The association of B-mode and Doppler ultrasonography is useful for the evaluation of the udder of dairy goats with mastitis. It is a sensitive and specific method for the study of this disease. Doppler mode was unable to establish reliable criteria for diagnosis of subclinical mastitis. Moreover, the quantification of echogenicity is a useful technique for the evaluation of the milk in animals with mastitis; therefore, it is suggested that it can be used as complementary technique for the diagnosis of mastitis in goats.

  7. Preterm or not--an evaluation of estimates of gestational age in a cohort of women from Rural Papua New Guinea.

    Directory of Open Access Journals (Sweden)

    Stephan Karl

    Full Text Available Knowledge of accurate gestational age is required for comprehensive pregnancy care and is an essential component of research evaluating causes of preterm birth. In industrialised countries gestational age is determined with the help of fetal biometry in early pregnancy. Lack of ultrasound and late presentation to antenatal clinic limits this practice in low-resource settings. Instead, clinical estimators of gestational age are used, but their accuracy remains a matter of debate.In a cohort of 688 singleton pregnancies from rural Papua New Guinea, delivery gestational age was calculated from Ballard score, last menstrual period, symphysis-pubis fundal height at first visit and quickening as well as mid- and late pregnancy fetal biometry. Published models using sequential fundal height measurements and corrected last menstrual period to estimate gestational age were also tested. Novel linear models that combined clinical measurements for gestational age estimation were developed. Predictions were compared with the reference early pregnancy ultrasound (<25 gestational weeks using correlation, regression and Bland-Altman analyses and ranked for their capability to predict preterm birth using the harmonic mean of recall and precision (F-measure.Average bias between reference ultrasound and clinical methods ranged from 0-11 days (95% confidence levels: 14-42 days. Preterm birth was best predicted by mid-pregnancy ultrasound (F-measure: 0.72, and neuromuscular Ballard score provided the least reliable preterm birth prediction (F-measure: 0.17. The best clinical methods to predict gestational age and preterm birth were last menstrual period and fundal height (F-measures 0.35. A linear model combining both measures improved prediction of preterm birth (F-measure: 0.58.Estimation of gestational age without ultrasound is prone to significant error. In the absence of ultrasound facilities, last menstrual period and fundal height are among the more reliable

  8. B-mode and Doppler sonography of the mammary glands in dairy goats for mastitis diagnosis.

    Science.gov (United States)

    Santos, V J C; Simplício, K; Sanchez, D; Coutinho, L; Teixeira, P; Barros, F; Almeida, V; Rodrigues, L; Bartlewski, P; Oliveira, M; Feliciano, M; Vicente, W

    2015-04-01

    This study aimed to evaluate the sonographic characteristics of the udder and teats and to determine the Doppler indexes of mammary artery in healthy and undergoing subclinical and clinical mastitis goats. Thirty animals among Saanen and Alpine Brown goats were arranged in three groups, healthy goats (HG), goats with subclinical mastitis (SMG) and goats with clinical mastitis (CMG). Using the B-mode, the sonographic characteristics (echotexture and echogenicity) and biometry (diameter and area of the udder cistern, diameter and area of the teat cistern and thickness of the teat wall) were evaluated. Using Doppler ultrasonography, the vascular indexes of the mammary artery were obtained. It was observed hyperechogenicity with solid component in the gland cistern when comparing animals with clinical mastitis and healthy mammary tissue. Regarding the echotexture of the breast tissue, there was heterogeneity in the mammary parenchyma on the three groups, for the milk, it was observed homogeneity for animals on HG and SMG and heterogeneity for animals on CMG. Grey-scale quantitative assessment revealed increase in echogenicity (mean value) for all the structures when comparing the three groups. Biometry did not reveal statistical difference between groups, for none of the evaluated structures. Doppler examination of the mammary artery showed the decrease of end diastolic velocity and raise of pulsatility index between groups. The association of B-mode and Doppler ultrasonography is useful for the evaluation of the udder of dairy goats with mastitis. It is a sensitive and specific method for the study of this disease. Doppler mode was unable to establish reliable criteria for diagnosis of subclinical mastitis. Moreover, the quantification of echogenicity is a useful technique for the evaluation of the milk in animals with mastitis; therefore, it is suggested that it can be used as complementary technique for the diagnosis of mastitis in goats. PMID:25601226

  9. Accuracy of Corneal Power Measurements for Intraocular Lens Power Calculation after Myopic Laser In situ Keratomileusis

    Science.gov (United States)

    Helaly, Hany A.; El-Hifnawy, Mohammad A. M.; Shaheen, Mohamed Shafik; Abou El-Kheir, Amr F.

    2016-01-01

    Purpose: To evaluate the accuracy of corneal power measurements for intraocular lens (IOL) power calculation after myopic laser in situ keratomileusis (LASIK). Methods: The study evaluated 45 eyes with a history of myopic LASIK. Corneal power was measured using manual keratometry, automated keratometry, optical biometry, and Scheimflug tomography. Different hypothetical IOL power calculation formulas were performed for each case. Results: The steepest mean K value was measured with manual keratometry (37.48 ± 2.86 D) followed by automated keratometry (37.31 ± 2.83 D) then optical biometry (37.06 ± 2.98 D) followed by Scheimflug tomography (36.55 ± 3.08). None of the K values generated by Scheimflug tomography were steeper than the measurements from the other 3 instruments. Using equivalent K reading (EKR) 4 mm with the Double-K SRK/T formula, the refractive outcome generated 97.8% of cases within ± 2 D, 80.0% of cases within ± 1 D, and 42.2% of cases within ± 0.5 D. The best combination of formulas was “Shammas-PL + Double-K SRK/T formula using EKR 4 mm.” Conclusion: Scheimflug tomography imaging using the Holladay EKR 4 mm improved the accuracy of IOL power calculation in post-LASIK eyes. The best option is a combination of formulas. We recommended the use the combined “Shammas-PL ± Double-K SRK/T formula using EKR 4 mm”h for optical outcomes. PMID:26957851

  10. A previsibilidade biométrica nas lentes intra-oculares multifocais Biometric predictability in multifocal intraocular lens

    Directory of Open Access Journals (Sweden)

    Augusto Cézar Lacava

    2007-08-01

    Full Text Available OBJETIVO: Apresentar a previsibilidade biométrica, avaliando a refração pós-operatória e acuidade visual (AV, em olhos submetidos a implante de lente intra-ocular multifocal. MÉTODOS: Estudo retrospectivo em 88 olhos de 50 pacientes, submetidos à facoemulsificação com implante de lentes multifocais, de três marcas comerciais ReSTOR, ReZoom e Tecnis. No exame biométrico foram utilizados a biometria óptica ou biometria por interferometria de baixa coerência, associada ao uso de tomógrafo de segmento anterior e à fórmula biométrica Holladay II. Com a refração pós-operatória, acuidade visual e a dioptria da LIO implantada, segundo a fórmula Holladay II, calculamos o valor da lente intra-ocular (LIO a ser implantada caso utilizássemos as fórmulas SRKT e Haigis. Os resultados foram avaliados por métodos estatísticos. RESULTADOS: Todos os olhos obtiveram AV igual ou maior a 20/40 e J3 sem correção. As fórmulas Holladay II, SRKT e Haigis apresentaram performance semelhante em todos os grupos de olhos. CONCLUSÃO: A utilização de novas tecnologias, como a biometria óptica e fórmulas de última geração, favorecem a obtenção do resultado refracional almejado com grande previsibilidade.PURPOSE: To present biometric predictability, evaluating postoperative refraction and visual acuity in eyes submitted to multifocal intraocular lens implantation. METHODS: Retrospective study in 88 eyes of 50 patients, submitted to phacoemulsification with multifocal lens implant of three commercial brands: ReSTOR, ReZoom and Tecnis. For biometric examination were used: optic biometry associated to the use of tomography of anterior segment and Holladay II biometric formula. With postoperative refraction, visual acuity and implanted IOL, according to Holladay II formula, we calculated the value of IOL to be implanted in case we used SRKT and Haigis formulas. The results were evaluated according to statistical methods. RESULTS: All eyes

  11. FETOMETRIA ULTRASSONOGRÁFICA EM PORCAS GESTANTES COMO MÉTODO COMPLEMENTAR PARA AVALIAÇÃO DA MORFOLOGIA E DETERMINAÇÃO DA IDADE FETAL

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    Mildre Loraine Pinto

    2012-12-01

    Full Text Available Faced with the advance in the use of reproductive biotechniques and few data reporting of gestational development in swines, it is necessary to apply efficient method of pregnancy diagnosis and estimation of fetal age. Thus, were subjected to ultrasound, B-mode, seven pregnant sows, Landrace, at different stages of pregnancy in order to diagnose pregnancy and study parameters on the development of embryonic and fetal pigs. It was concluded that ultrasonography has proved to be a very suitable and accurate method for diagnosing pregnancy and in the assessment of biometry fetal and morphology, and the biparietal diameter had the largest number of measurements when compared with the other variables. Such measures were considered accurate because the dates of mating and birthing are known. However, further studies should be performed in swine, compared to the technique of fetal biometry in different races and different stages of pregnancy.Frente ao avanço na utilização das biotécnicas reprodutivas e aos poucos dados referentes ao desenvolvimento gestacional em suínos, faz-se necessária a aplicação de método eficiente de diagnóstico de gestação e da estimativa de idade fetal. Assim, foram submetidas a exames ultrassonográficos, em modo-B, sete fêmeas suínas gestantes, da raça Landrace, em diferentes estádios gestacionais com objetivo de diagnosticar a gestação e estudar parâmetros sobre o desenvolvimento embrionário e/ou fetal dos leitões. Concluiu-se que a ultrassonografia mostrou ser um método bastante acurado e apropriado no diagnóstico gestacional e na avaliação da biometria e morfologia fetais, sendo que o diâmetro biparietal teve o maior número de mensurações quando comparado às demais variáveis, sendo as mesmas consideradas acuradas em virtude das datas de cobertura e de parto serem conhecidas. No entanto, novos estudos devem ser realizados na espécie suína, comparando-se a técnica de biometria fetal em

  12. Effectiveness and consistency of a suite of descriptors for assessing the ecological status of seagrass meadows (Posidonia oceanica L. Delile)

    Science.gov (United States)

    Rotini, Alice; Belmonte, Alessandro; Barrote, Isabel; Micheli, Carla; Peirano, Andrea; Santos, Rui O.; Silva, João; Migliore, Luciana

    2013-09-01

    The increasing rate of human-induced environmental changes on coastal marine ecosystems has created a demand for effective descriptors, in particular for those suitable for monitoring the status of seagrass meadows. Growing evidence has supported the useful application of biochemical and genetic descriptors such as secondary metabolite synthesis, photosynthetic activity and genetic diversity. In the present study, we have investigated the effectiveness of different descriptors (traditional, biochemical and genetic) in monitoring seagrass meadow conservation status. The Posidonia oceanica meadow of Monterosso al Mare (Ligurian sea, NW Mediterranean) was subjected to the measurement of bed density, leaf biometry, total phenols, soluble protein and photosynthetic pigment content as well as to RAPD marker analysis. This suite of descriptors provided evidence of their effectiveness and convenient application as markers of the conservation status of P. oceanica and/or other seagrasses. Biochemical/genetic descriptors and those obtained by traditional methods depicted a well conserved meadow with seasonal variability and, particularly in summer, indicated a healthier condition in a portion of the bed (station C), which was in agreement with the physical and sedimentological features of the station. Our results support the usefulness of introducing biochemical and genetic approaches to seagrass monitoring programs since they are effective indicators of plant physiological stress and environmental disturbance.

  13. Restoring lens capsule integrity enhances lens regeneration in New Zealand albino rabbits and cats.

    Science.gov (United States)

    Gwon, A; Gruber, L J; Mantras, C

    1993-11-01

    In studies conducted by numerous investigators for 150 years, lenses regenerated following endocapsular lens extraction in New Zealand albino rabbits have been irregular in shape, appearing primarily doughnut-shaped as a result of lack of lens growth at the site of the anterior capsulotomy and its adhesion to the posterior capsule. In the present study, we restored the lens capsule integrity by inserting a collagen patch at the time of surgery to seal the anterior capsulotomy and to improve the shape and structure of the regenerated lenses. We then filled the capsule bag with air to prevent adhesions between the anterior and posterior capsule and maintain capsule tautness and shape. Lens regeneration was first noted as early as one to two weeks. Regenerated lens filled approximately 50% of the capsule bag at two weeks and 100% by five weeks. Subsequent growth was in the anterior-posterior direction and measured by A-scan biometry. Lens thickness increased by 0.3 mm per month. The regenerated lenses were spherical with normal cortical structure and a nuclear opacity. In conclusion, restoration of lens capsular integrity with a collagen patch following endocapsular lens extraction enhanced the shape, structure, and growth rate of the regenerated lenses. In addition, lens regeneration was shown to occur in two cats.

  14. Analysis of male reproductive parameters in a murine model of mucopolysaccharidosis type I (MPS I)

    Science.gov (United States)

    do Nascimento, Cinthia Castro; Junior, Odair Aguiar; D’Almeida, Vânia

    2014-01-01

    Mucopolysaccharidosis (MPS) I is a lysosomal storage disorder (LSD) that is characterised by alpha-L-iduronidase (Idua) deficiency and continuous deposition of glycosaminoglycans (GAGs), which consequently interferes with cell signalling mechanisms and results in multisystemic and progressive symptoms. The animal model of MPS I (Idua-/-) has been widely studied to elucidate the consequences and progression of the disorder; however, studies specifically assessing the male reproductive tract are lacking. The aim of this study was to evaluate some of the reproductive characteristics of male MPS I mice in two phases of life. Reproductive organ biometry, sperm counts, sperm morphological evaluation, plasma testosterone measurements and histopathological, histomorphometrical and immunohistochemical analysis were performed in 3- and 6-month-old C57BL/6 Idua+/+ and Idua-/- mice. Seminal vesicle weights were decreased in both the 3- and 6-month-old Idua-/- mice. Decrease in sperm counts and the majority of the histopathological signs were observed in the 6-month-old Idua-/- mice. No differences were detected in the sperm morphological analysis. Immunohistochemistry revealed that seminiferous tubules from 3-month-old Idua-/- mice were more intensely stained with anti-caspase-3 than 3-month-old Idua+/+ mice, but no difference was found at 6 months. These results suggest that MPS I interferes with male reproductive parameters both in 3 and 6-month-old animals and histopathological signs are more pronounced in 6-month-old mice, indicating that the effects of the disorder may intensify with the disease progression. PMID:25031781

  15. 3D digitization methods based on laser excitation and active triangulation: a comparison

    Science.gov (United States)

    Aubreton, Olivier; Mériaudeau, Fabrice; Truchetet, Frédéric

    2016-04-01

    3D reconstruction of surfaces is an important topic in computer vision and corresponds to a large field of applications: industrial inspection, reverse engineering, object recognition, biometry, archeology… Because of the large varieties of applications, one can find in the literature a lot of approaches which can be classified into two families: passive and active [1]. Certainly because of their reliability, active approaches, using imaging system with an additional controlled light source, seem to be the most commonly used in the industrial field. In this domain, the 3D digitization approach based on active 3D triangulation has had important developments during the last ten years [2] and seems to be mature today if considering the important number of systems proposed by manufacturers. Unfortunately, the performances of active 3D scanners depend on the optical properties of the surface to digitize. As an example, on Fig 1.a, a 3D shape with a diffuse surface has been digitized with Comet V scanner (Steinbichler). The 3D reconstruction is presented on Fig 1.b. The same experiment was carried out on a similar object (same shape) but presenting a specular surface (Fig 1.c and Fig 1.d) ; it can clearly be observed, that the specularity influences of the performance of the digitization.

  16. DNA-based association and description of the larval stage of Apatania helvetica Schmid 1954 (Trichoptera, Apataniidae) with notes on ecology and zoogeography.

    Science.gov (United States)

    Waringer, Johann; Lubini, Verena; Hoppeler, Felicitas; Pauls, Steffen U

    2015-01-01

    This paper describes the hitherto unknown larva of Apatania helvetica Schmid 1954. Sequence data from the mitochondrial cytochrome c oxidase region were used to associate adult females and larvae. Genetic data confirmed the autochthonous status of this taxon within the parthenogenetic Apatania muliebris Complex ('sous groupe') sensu Schmid 1954. Information on the morphology of the larva is given, and the most important diagnostic features are illustrated. Apatania helvetica is morphologically close to Apatania muliebris McLachlan 1866 and A. fimbriata (Pictet 1834). In the context of Apataniidae, this trio of species can be separated by the presence of long tapering setae with flexible tips at the anterior border of the pronotum, by a central gap within the transverse setal band on the 1st abdominal dorsum, by biometry of the frontoclypeal setation and by their distribution in Europe. With respect to European ecoregions (Graf et al. 2008), Apatania muliebris has been recorded from the Alps, the central plains and highlands, the Baltic countries, Great Britain, Ireland and Scandinavia; A. fimbriata is known from the Alps, the western and central highlands, the western plains, the Hungarian lowlands and the Carpathians; and A. helvetica is restricted to the Alps and has been recorded only in Switzerland. PMID:26624099

  17. Biometric and Ultrasonographic Evaluation of the Testis of One-humped Camel (Camelus dromedarius

    Directory of Open Access Journals (Sweden)

    Riaz Hussain Pasha, Anas Sarwar Qureshi*, Laeeq Akbar Lodhi1 and Huma Jamil1

    2011-04-01

    Full Text Available Twenty four adult clinically healthy one-humped male camels (Camelus dromedarius were examined three times (beginning, mid and end in each season (winter, spring, summer and autumn for establishing the normal ultrasonic appearance and seasonal changes in the testicular parenchyma in the natural ecology of Punjab, Pakistan. The testes of each camel were scanned by using a B-mode real time ultrasound scanner fitted with a 7.5-MHz linear-array transducer. Scrotal biometry was done with the measuring tape during all the seasons of year. The tunics of the testes appeared as hyperechoic lines surrounding the homogenous, moderately echogenic parenchyma of the testis. The mediastinum testis was visualized as hyperechoic central line and a spot, in longitudinal and transverse sections, respectively. During winter season, the parenchyma was hyperechoic and mediastinum testis was seen as thin hyperechoic line. In spring, the echogenicity of parenchyma was moderate and mediastinum appeared relatively thick central hyperechoic line. In summer and autumn, less echoic parenchyma and thick band of mediastinum was recorded. Biometric studies showed significantly (P<0.01 higher scrotal length and width of the testis during winter and spring season as compared to summer and autumn. Present study revealed that the ultrasonic structure of camel testis resembles other mammals and season has an apparent effect on the testicular size and echogenicity of the testicular parenchyma in the one-humped camel.

  18. Feeding of larvae of the hybrid surubim Pseudoplatystoma sp. under two conditions of food management - doi: 10.4025/actascibiolsci.v35i2.15359

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    Aryadne Simões Rocha

    2013-05-01

    Full Text Available We evaluated the growth and diet composition of hybrid surubim larvae (Pseudoplatystoma corruscans x P. reticulatum produced in two fish farming by using different systems of feeding with natural plankton: M I, larvae are transferred to fertilized fish pond for being freely fed with natural plankton; M II, larvae are remained inside laboratory in glass fiber boxes and plankton are gathered with a plankton net and offered in a controlled way. It was collected 10 individuals daily during the feeding period with live plankton for 20 days. After the biometry, stomachs were opened and the food items identified and quantified by the volumetric method. The items were represented by algae, protozoa, microcrustacean, insect larvae and surubim fragments (cannibalism. The items with higher volumetric percentage were Chironomidae larvae (29.25% followed by surubim fragments (19.68% in M I, and surubim fragments (21.85% and Moina micrura (19.97% in MII. The items Chydorus sp., Diaphanosoma sp., sp. Macrothrix and Ephemeroptera larvae were found only in fish of M I, while algae Ulothrix sp., Oscillatoria sp. and the protozoa Difflugia sp were only found in stomachs of surubim from M II. Regarding the growth, the surubim had grown faster in M I.

  19. Birch Stands Growth Increase in Western Siberia

    Science.gov (United States)

    Kharuk, Viacheslav I.; Kuzmichev, Valeriy V.; Im, Sergey T.; Ranson, Kenneth J.

    2014-01-01

    Birch (Betula pendula Roth) growth within the Western Siberia forest-steppe was analyzed based on long-term (1897-2006) inventory data (height, diameter at breast height [dbh], and stand volume). Analysis of biometry parameters showed increased growth at the beginning of twenty-first century compared to similar stands (stands age = 40-60 years) at the end of nineteenth century. Mean height, dbh, and stem volume increased from 14 to 20 m, from 16 to 22 cm, and from approx. 63 to approx. 220 cu m/ha, respectively. Significant correlations were found between the stands mean height, dbh, and volume on the one hand, and vegetation period length (r(sub s) = 0.71 to 0.74), atmospheric CO2 concentration (r(sub s) = 0.71 to 0.76), and drought index (Standardized Precipitation-Evapotranspiration Index, r(sub s) = -0.33 to -0.51) on the other hand. The results obtained have revealed apparent climate-induced impacts (e.g. increase of vegetation period length and birch habitat drying due to drought increase) on the stands growth. Along with this, a high correlation of birch biometric parameters and [CO2] in ambient air indicated an effect of CO2 fertilization. Meanwhile, further drought increase may switch birch stand growth into decline and greater mortality as has already been observed within the Trans-Baikal forest-steppe ecotone.

  20. Productive performance of Nile tilapia (Oreochromis niloticus fed at different frequencies and periods with automatic dispenser

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    R.M.R. Sousa

    2012-02-01

    Full Text Available The performance of Nile tilapia (Oreochromis niloticus raised in cages furnished with an automatic dispenser, supplied at different frequencies (once per hour and once every two hours and periods (daytime, nighttime and both was evaluated. Eighteen 1.0m³ cages were placed into a 2000m² pond, two meters deep with a 5% water exchange. One hundred and seventy tilapias, with initial weight of 16.0±4.9g, were dispersed into each 1m³ cage and the feed ration was adjusted every 21 days with biometry. Data was collected from March to July (autumn and winter. Significant difference to final weight (P<0.05 among treatments was observed. The increase in feeding frequency improves the productive performance of Nile tilapias in cages and permitted better management of the food. The better feed conversion rate for high feeding frequency (24 times day-1 can result in saving up to 360kg of food for each ton of fish produced, increasing the economic sustenance for tilapia culture and suggesting less environmental pollution.

  1. Analysis of capture-recapture data

    CERN Document Server

    McCrea, Rachel S

    2014-01-01

    An important first step in studying the demography of wild animals is to identify the animals uniquely through applying markings, such as rings, tags, and bands. Once the animals are encountered again, researchers can study different forms of capture-recapture data to estimate features, such as the mortality and size of the populations. Capture-recapture methods are also used in other areas, including epidemiology and sociology.With an emphasis on ecology, Analysis of Capture-Recapture Data covers many modern developments of capture-recapture and related models and methods and places them in the historical context of research from the past 100 years. The book presents both classical and Bayesian methods.A range of real data sets motivates and illustrates the material and many examples illustrate biometry and applied statistics at work. In particular, the authors demonstrate several of the modeling approaches using one substantial data set from a population of great cormorants. The book also discusses which co...

  2. Contributions on biomedical imaging, with a side-look at molecular imaging; Beitraege zur biomedizinischen Bildgebung mit einem Seitenblick auf Molecular Imaging

    Energy Technology Data Exchange (ETDEWEB)

    Winkler, G. (ed.)

    2004-05-01

    This report is intended as a brief introduction to the emerging scientific field of biomedical imaging. The breadth of the subject is shown and future fields of research are indicated, which hopefully will serve as a guide to the identification of starting points for the research in 'Biomedical and/or Molecular Imaging' at the GSF-National Research Center for Environment and Health. The report starts with a brief sketch of the history. Then a - necessarily incomplete - list of research topics is presented. It is organized in two parts: the first one addresses medical imaging, and the second one is concerned with biological point aspects of the matter. (orig.) [German] In diesem Bericht sind einige Beitraege zum Gebiet 'Bildgebende Verfahren in Biologie und Medizin' zusammengestellt. Sie stammen saemtlich aus dem Institut fuer Biomathematik und Biometrie, IBB, am Forschungszentrum fuer Umwelt und Gesundheit, GSF, in Muenchen/Neuherberg, und seinem engeren Umfeld. Ziel war es, zu sichten, was in und um diesen Themenkreis herum an Wissen und sonstiger Kompetenz hier vorhanden ist. Einige am IBB etablierte Gebiete wie Roentgen-Mammographie oder funktionelle Magnetresonanztherapie wurden ausgeblendet. Der Grund ist die Fokussierung auf ein nicht exakt definierbares, neues Gebiet der Bildgebung, das unter dem Namen 'Molecular Imaging' kursiert und derzeit Furore macht macht. (orig.)

  3. Efeitos do trimetilaminoetano (TES e ringer lactato em sêmen de macacos-aranha mantidos em cativeiro ( Ateles paniscus e A. marginatus

    Directory of Open Access Journals (Sweden)

    K.S.M. Silva

    2013-06-01

    Full Text Available The performances of the diluents TES and CEBRAN II were compared as cryopreservatives of semen from non human primates of the genus Ateles. The experiment was carried out using one Ateles marginatus and two Ateles paniscus specimens, males and adults, maintained in the same captivity conditions at the National Center of Primates (CENP-SVS/MS. The animals were subjected to clinical and andrological examinations - testicular biometry - before the semen collection by eletroejaculation. Evaluations of motility and forward movement in the fresh semen were made. Semen were made dilution was made with the diluents TES and CEBRAN II. The ejaculates were diluted with the diluents (2:1proportion, packed in 0.25mL plastic straws and cryopreserved in liquid nitrogen. After thawing, the packed ejaculates were appraised in thermo resistance test (TTR. The averages of volume and concentration were, respectively, 1.94mL (0.83 and 3,020,000 sptz/mL (275.97. The pH 8 and seminal coagulation were observed in all samples. The results suggest that the TES diluent presents better efficiency in the preservation of Ateles semen than CEBRAN II.

  4. Greater rhea (Rhea americana) external morphology at different stages of embryonic and fetal development.

    Science.gov (United States)

    de Almeida, Hatawa Melo; Sousa, Renata Patrícia; Bezerra, Dayseanny Oliveira; Olivindo, Rodrigo Fernando Gomes; das Neves Diniz, Anaemilia; de Oliveira, Sâmia Clara; Feitosa, Matheus Levi Tajra; de Moura Fortes, Eunice Anita; Ferraz, Maíra Soares; de Carvalho, Yulla Klinger Pereira; de Menezes, Danilo José Ayres; de Carvalho, Maria Acelina Martins

    2015-11-01

    Knowledge of wild species embryonic development is important for their maintenance in captivity or the wild. The objective of the present study was to characterize the external morphology and define the biometry of greater rhea embryos and fetuses at different stages of development. A total of 41 embryos and fetuses were analyzed to describe their external morphology using a stereoscopic microscope. The crown-rump (CR), total length (TL), cephalocaudal length (CCL), biparietal diameter (BPD), beak, humerus and tibio-tarsal lengths were measured by digital pachymeter, millimetric scale ruler and cotton thread. The weight of the embryos and fetuses was measured on digital scales. The greater rhea embryos at 5, 6 and 7 days incubation presented a "C" shape. At 9, 10 and 11 days the eyes were big and pigmented. At 11, 12 and 13 days the eyelid covered more than half the eye, resulting in an oval slit. In 14 and 15 day-old embryos, the skin was still thin and the ribs evident, but at 18 days this structure was thicker. In embryos at 21 and 27 days of development closed eyelids were observed forming an eyelid slit, and the eye ball was less pronounced at 27 days. Weight gain presented an exponential growth curve, while measurements such as TL, DBP, beak, humerus and tibio-tarsal length had linear growth over time. Thus it was possible to characterize the greater rhea embryos and fetuses at several incubation ages using their external morphology and morphometric analyses. PMID:26432389

  5. Cat, cougar, and jaguar spermatogenesis: a comparative analysis

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    Deiler Sampaio Costa

    2006-09-01

    Full Text Available This work presents a comparative review about the spermatogenic process in cats (Felis domestica, jaguars (Panthera onca and cougars (Puma concolor, with emphasis on testicular biometry, gonadossomatic index, volumetric proportion of testicular parenchyma components, tubular diameter, seminiferous epithelial height and seminiferous tubule length. It was an approach of the differences among the cell proportions that allowed conclusions about the overall yield of spermatogenic process and Sertoli cell index in three feline species.O processo espermatogênico do gato doméstico (Felis domestica, da onça-pintada (Panthera onca e da onça-parda (Puma concolor são analisados de forma comparativa, dando-se ênfase à biometria testicular, ao índice gonadossomático, à proporção volumétrica dos constituintes do parênquima testicular, ao diâmetro tubular, à altura do epitélio seminífero e ao comprimento dos túbulos seminíferos. Abordam-se ainda as diferenças entres as razões celulares que permitem conclusões sobre o rendimento do processo espermatogênico e índices de células de Sértoli das três espécies.

  6. GERMINAÇÃO E MORFOLOGIA DE SEMENTES E PLÂNTULAS DE Albizia edwallii (Hoehne Barneby & J. W. Grimes

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    MANOELA MENDES DUARTE

    2015-01-01

    Full Text Available This study aimed to characterize the morphology of seeds and seedlings and evaluate the germination of seeds of Albizia edwallii submitted to different substrates and temperatures. In physical characterization were evaluated thousand seed weight, the number of seeds per kilogram and moisture content. To determine the morphological characteristics, it was evaluated the biometry of 50 seeds, as well as its internal and external characteristics. Germination was conducted at three temperatures (20 ° C, 25 ° C and 30 ° C and three substrates (sand, vermiculite and blotting paper with five replications of 40 seeds per treatment, in a factorial 3 x 3 and completely randomized design. The variables were germination percentage, germination rate index, mean germination time, and synchronization index. The thousand seed weight was 47.7 g, while the number of seeds per kilo was 20.964 for the moisture content of 13.1%. The seeds have an elliptical shape, no endosperm and have persistent funiculus. Germination is epigeal, and the seedling is phanerocotylar being fully formed at 15 days. Temperatures of 20 ° C and 25 ° C provide the highest germination rates, 42 and 38%, respectively, and germination speed index (GSI. The use of sand as a substrate provided better germination percentage than the other substrates. Thus, it is recommended to use sand as a substrate and temperatures of 20 ° C and 25 ° C in A. edwalli germination tests.

  7. In situ effects of metal contamination from former uranium mining sites on the health of the three-spined stickleback (Gasterosteus aculeatus, L.).

    Science.gov (United States)

    Le Guernic, Antoine; Sanchez, Wilfried; Bado-Nilles, Anne; Palluel, Olivier; Turies, Cyril; Chadili, Edith; Cavalié, Isabelle; Delahaut, Laurence; Adam-Guillermin, Christelle; Porcher, Jean-Marc; Geffard, Alain; Betoulle, Stéphane; Gagnaire, Béatrice

    2016-08-01

    Human activities have led to increased levels of various pollutants including metals in aquatic ecosystems. Increase of metallic concentrations in aquatic environments represents a potential risk to exposed organisms, including fish. The aim of this study was to characterize the environmental risk to fish health linked to a polymetallic contamination from former uranium mines in France. This contamination is characterized by metals naturally present in the areas (manganese and iron), uranium, and metals (aluminum and barium) added to precipitate uranium and its decay products. Effects from mine releases in two contaminated ponds (Pontabrier for Haute-Vienne Department and Saint-Pierre for Cantal Department) were compared to those assessed at four other ponds outside the influence of mine tailings (two reference ponds/department). In this way, 360 adult three-spined sticklebacks (Gasterosteus aculeatus) were caged for 28 days in these six ponds before biomarker analyses (immune system, antioxidant system, biometry, histology, DNA integrity, etc.). Ponds receiving uranium mine tailings presented higher concentrations of uranium, manganese and aluminum, especially for the Haute-Vienne Department. This uranium contamination could explain the higher bioaccumulation of this metal in fish caged in Pontabrier and Saint-Pierre Ponds. In the same way, many fish biomarkers (antioxidant and immune systems, acetylcholinesterase activity and biometric parameters) were impacted by this environmental exposure to mine tailings. This study shows the interest of caging and the use of a multi-biomarker approach in the study of a complex metallic contamination.

  8. Ultrafast High-Resolution Mass Spectrometric Finger Pore Imaging in Latent Finger Prints

    Science.gov (United States)

    Elsner, Christian; Abel, Bernd

    2014-11-01

    Latent finger prints (LFPs) are deposits of sweat components in ridge and groove patterns, left after human fingers contact with a surface. Being important targets in biometry and forensic investigations they contain more information than topological patterns. With laser desorption mass spectrometry imaging (LD-MSI) we record `three-dimensional' finger prints with additional chemical information as the third dimension. Here we show the potential of fast finger pore imaging (FPI) in latent finger prints employing LD-MSI without a classical matrix in a high- spatial resolution mode. Thin films of gold rapidly sputtered on top of the sample are used for desorption. FPI employing an optical image for rapid spatial orientation and guiding of the desorption laser enables the rapid analysis of individual finger pores, and the chemical composition of their excretions. With this approach we rapidly detect metabolites, drugs, and characteristic excretions from the inside of the human organism by a minimally-invasive strategy, and distinguish them from chemicals in contact with fingers without any labeling. The fast finger pore imaging, analysis, and screening approach opens the door for a vast number of novel applications in such different fields as forensics, doping and medication control, therapy, as well as rapid profiling of individuals.

  9. [Computed tomography and cranial paleoanthropology].

    Science.gov (United States)

    Cabanis, Emmanuel Alain; Badawi-Fayad, Jackie; Iba-Zizen, Marie-Thérèse; Istoc, Adrian; de Lumley, Henry; de Lumley, Marie-Antoinette; Coppens, Yves

    2007-06-01

    Since its invention in 1972, computed tomography (C.T.) has significantly evolved. With the advent of multi-slice detectors (500 times more sensitive than conventional radiography) and high-powered computer programs, medical applications have also improved. CT is now contributing to paleoanthropological research. Its non-destructive nature is the biggest advantage for studying fossil skulls. The second advantage is the possibility of image analysis, storage, and transmission. Potential disadvantages include the possible loss of files and the need to keep up with rapid technological advances. Our experience since the late 1970s, and a recent PhD thesis, led us to describe routine applications of this method. The main contributions of CT to cranial paleoanthropology are five-fold: --Numerical anatomy with rapid acquisition and high spatial resolution (helicoidal and multidetector CT) offering digital storage and stereolithography (3D printing). --Numerical biometry (2D and 3D) can be used to create "normograms" such as the 3D craniofacial reference model used in maxillofacial surgery. --Numerical analysis offers thorough characterization of the specimen and its state of conservation and/or restoration. --From "surrealism" to virtual imaging, anatomical structures can be reconstructed, providing access to hidden or dangerous zones. --The time dimension (4D imaging) confers movement and the possibility for endoscopic simulation and internal navigation (see Iconography). New technical developments will focus on data processing and networking. It remains our duty to deal respectfully with human fossils. PMID:18402165

  10. SONOGRAPHIC EVALUATION OF PLACENTAL THICKNESS – AN INDICATOR OF GESTATIONAL AGE

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    Anu

    2016-02-01

    Full Text Available AIMS AND OBJECTIVES The purpose of this study was to evaluate the placental thickness by sonography in normal singleton pregnancies at different stages of gestation in order to develop this as a useful tool for gestational age estimation. MATERIALS AND METHODS We evaluated 310 normal singleton pregnancies and calculated the fetal gestational age using sonographic biometric criteria for different periods of gestation. Placental thickness was measured by sonography at the site of umbilical cord insertion using the standardized technique. Mean placental thickness along with its standard deviation and 95 % confidence interval was calculated for each week of gestation. We used correlation regression analysis to study the relationship between placental thickness and gestational age. RESULTS Mean placental thickness (in mm closely matched the gestational age (in weeks between 10 to 30 weeks of gestation. We established a nomogram for placental thickness measurements with increasing gestational age. CONCLUSIONS Placental thickness has a linear relationship with gestational age especially during the second trimester of pregnancy. Placental thickness measurements when used along with fetal biometry can increase the accuracy of predicting gestational age during pregnancy. The regression equation and nomogram developed by us can be used to calculate the gestational age with minimal error.

  11. Recovery of the commercial sponges in the central and southeastern Aegean Sea (NE Mediterranean after an outbreak of sponge disease

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    J. CASTRITSI-CATHARIOS

    2012-12-01

    Full Text Available The distribution and biometry of commercial sponges (Porifera in coastal areas of the central and southeastern Aegean Sea was investigated to estimate the recovery progress of the populations eight years after the first appearance of sponge disease. Signs of the disease were detected only in 1.6% of the harvested sponges. Multivariate analysis on the percentage abundance of sponges showed two distinct groups among the sixteen fishing grounds studied: the eight deep (50-110 m and the eight shallow ones (<40 m. The group from the deep depths consisted of Spongia officinalis adriatica, S. agaricina and S. zimocca. The infralittoral zone was characterized by the presence of Hippospongia communis, S. officinalis adriatica and S. officinalis mollissima. These bath sponges showed an enhanced abundance in the eastern Cretan Sea (S. Aegean Sea. In addition, their dimensions, particularly height, increased with increasing depth. It is indicated that the hydrographic conditions prevailing in the eastern Cretan Sea affected the repopulating processes of sponge banks. In each species, the biometric characteristics of the experimental specimens were similar to those of the sponges found in the market and harvested at respective depths prior to the appearance of sponge disease.

  12. Anterior chamber depth during hemodialysis

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    Gracitelli CPB

    2013-08-01

    Full Text Available Carolina Pelegrini Barbosa Gracitelli,1 Francisco Rosa Stefanini,1 Fernando Penha,1 Miguel Ângelo Góes,2 Sérgio Antonio Draibe,2 Maria Eugênia Canziani,2 Augusto Paranhos Junior1 1Ophthalmology Department, 2Division of Nephrology, Federal University of São Paulo – UNIFESP, São Paulo, Brazil Background: Exacerbation of chronic glaucoma or acute glaucoma is occasionally observed in patients undergoing hemodialysis (HD because of anterior chamber depth changes during this therapy. Purpose: To evaluate anterior chamber depth and axial length in patients during HD sessions. Methods: A total of 67 eyes of 35 patients were prospectively enrolled. Axial length and anterior chamber depth were measured using ultrasonic biometry, and these measures were evaluated at three different times during HD sessions. Body weight and blood pressure pre- and post-HD were also measured. Results: There was no difference in the axial length between the three measurements (P = 0.241. We observed a significantly decreased anterior chamber depth (P = 0.002 during HD sessions. Conclusion: Our results support the idea that there is a change in anterior chamber depth in HD sessions. Keywords: anterior chamber, hemodialysis, axial length, acute angle-closure glaucoma

  13. A Novel Method for 3D Face Detection and Normalization

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    Robert Niese

    2007-09-01

    Full Text Available When automatically analyzing images of human faces, either for recognition in biometry applications or facial expression analysis in human machine interaction, one has to cope with challenges caused by different head pose, illumination and expression. In this article we propose a new stereo based method for effectively solving the pose problem through 3D face detection and normalization. The proposed method applies a model-based matching and is especially intended for the study of facial features and the description of their dynamic changes in image sequences under the assumption of non-cooperative persons. In our work, we are currently implementing a new application to observe and analyze single faces of post-operative patients. In the proposed method, face detection is based on color driven clustering of 3D points derived from stereo. A mesh model is matched with the post-processed face cluster using a variant of the Iterative Closest Point algorithm (ICP. Pose is derived from correspondence. Then, pose and model information is used for the synthesis of the face normalization. Results show, stereo and color are powerful cues for finding the face and its pose under a wide range of poses, illuminations and expressions (PIE. Head orientation may vary in out of plane rotations up to ±45°.

  14. Ultrasound Determination of Gestational Age Using Placental Thickness in Female Dogs: An Experimental Study

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    André Luiz Louzada Maldonado

    2012-01-01

    Full Text Available Objective. To verify if the placental thickness allows determining the gestational age, evaluating the correlation between the referred gestational age with the studied one, and the accuracy of the placental thickness measurement (biometry with fetal morphologic parameters in bitches. Methods. The placental thickness of 336 bitches of diverse breeds was evaluated. Bitches were divided in three groups by body weight: small, medium, and big large size. The gestations pregnancies were evaluated by ultrasound from the third week of gestation. An analysis was performed between the mean values of the gestational age obtained of placental thickness by adjustment of curves and the reported gestational age. Student's t-test was applied to compare the mean of reported and placental thickness gestational age. Significance was defined as P<0.05. Results. A positive and statistically significant correlation exists between the placental thickness and gestational age. The expression that presents the best correlation coefficient and explanation was thickness of placenta = 0.021x gestational age −0.314. Conclusion. It is possible to determine the gestational age in relation to the placental thickness measured by ultrasound in bitches with a satisfactory accuracy in relation to fetal morphologic parameters as gestational vesicle, ribs, or kidneys.

  15. Effect of dietary aloe vera on growth and lipid peroxidation indices in rainbow trout (Oncorhynchus mykiss).

    Science.gov (United States)

    Golestan, Ghazale; Salati, Amir Parviz; Keyvanshokooh, Saeed; Zakeri, Mohammad; Moradian, Hossein

    2015-01-01

    Aloe vera has been used worldwide in pharmaceutical, food and cosmetic industries due to the plethora of biological activities of its constituents. This study was done to evaluate the effects of dietary aloe vera on growth and lipid peroxidation in rainbow trout (Oncorhynchus mykiss). A total number of 480 O. mykiss (mean weight 9.50 ± 0.85 g) were randomized into four experimental groups including one control and three experimental groups that aloe vera was incorporated in their diet at 0.5, 1.0 and 2.0 g kg(-1). Trial was done for eight weeks. Then biometry and blood sampling were done. Plasma malondialdehyde, ferric reducing ability of plasma and growth index were estimated at the end of study. The results showed that aloe vera extract did not affect growth indices. Malondialdehyde was increased in the experimental group compared to the control group but ferric reducing ability of plasma showed a decrease in experimental groups (p aloe vera have adverse effects on antioxidant defense system in O. mykiss.

  16. The Effect of Gestational Age on Axial Length of the Eyes of Premature Infants

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    Mehmet Ali Sekeroglu

    2016-01-01

    Full Text Available Aim: The aim of the present study is to evaluate the axial length of the eyes of premature infants without retinopathy of prematurity and to document the relationship with gestational age and changes as infants grew-up. Material and Method: The axial length of the eyes were measured by using a mobile A-scan ultrasonographic biometry device just before the first retinopathy of prematurity screening examination and 4-weeks thereafter. Results: One-hundred and thirty-six infants with a mean gestational age of 31,7±2,7 weeks and a birth-weight of 1561.0±379.3 g were included in the study. Axial length measurements were done at a mean postconceptional age of 35.8 ±2.6 (31-40 and 39.8±2.7 (35-44 weeks, consecutively. The mean axial length at first and second visits were 16.43±0.42 mm (15.28-17.13 and 16.69±0.41 mm (15.60-17.70, consecutively (p

  17. Investigation of parasites of pikes (Esox lucius Linnaeus, 1785) from Chamkhale River, Anzali and Amirkelayeh wetlands, Iran.

    Science.gov (United States)

    Sadrinejad, Ali; Khara, Hossein; Gudarzi, Majid

    2016-09-01

    To investigate the health status, the parasite diversity and abundance were studied in three pike populations. For this purpose, totally 90 fish were caught from three natural habitats of pike including Chamkhale River, Anzali and Amirkelayeh wetlands, Iran. After biometry and age determination, fish were dissected and parasites were investigated in intestine, gill and eye. According to results, five parasite species were identified in whole body of pikes including Eustrongylides exises, Raphidascaris acus and Triaeophorus crassus in intestine, Tetraonchus monenteron in gill and Diplostomum spathaceum in eye. The highest values of quantitative indices of parasite population [i.e. incidence percent (86.66 %), mean intensity (60.83 ± 39.92), mean abundance (58.14 ± 34.6) and abundance range (1-232)] were recorded for T. monenteron in all three sampling regions. The lowest values of these quantitative indices were found for D. spathaceum, E. exises and Tetraonchus crassus in Anzali wetland, Chamkhale River and Amirkelayeh wetland respectively. In 2, 3 and 4 years old pikes, T. monenteron had the highest values of quantitative indices of parasite population. In conclusion, our results showed that Anzali wetland have more parasite pollution compared to other sampling regions. This may be due to the more rapid eutrophication in this wetland compared to Amirkelayeh wetland and Chamkhale River. PMID:27605833

  18. Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery

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    Nino Hirnschall

    2015-01-01

    Full Text Available Purpose. To evaluate influencing factors on the residual astigmatism after performing peripheral corneal relaxing incisions (PCRIs during cataract surgery. Methods. This prospective study included patients who were scheduled for cataract surgery with PCRIs. Optical biometry (IOLMaster 500, Carl Zeiss Meditec AG, Germany was taken preoperatively, 1 week, 4 months, and 1 year postoperatively. Additionally, corneal topography (Atlas model 9000, Carl Zeiss Meditec AG, Germany, ORA (Ocular Response Analyzer, Reichert Ophthalmic Instruments, USA, and autorefraction (Autorefractometer RM 8800 Topcon were performed postoperatively. Results. Mean age of the study population n=74 was 73.5 years (±9.3; range: 53 to 90 and mean corneal astigmatism preoperatively was −1.82 D (±0.59; 1.00 to 4.50. Mean corneal astigmatism was reduced to 1.14 D (±0.67; 0.11 to 3.89 4 months postoperatively. A partial least squares regression showed that a high eccentricity of the cornea, a large deviation between keratometry and topography, and a high preoperative astigmatism resulted in a larger postoperative error concerning astigmatism. Conclusions. PCRI causes a reduction of preoperative astigmatism, though the prediction is difficult but several factors were found to be a relevant source of error.

  19. Landscaping biostatistics education in India.

    Science.gov (United States)

    Singh, Ranjana; Zodpey, Sanjay P; Sharma, Kavya; Bangdiwala, Shrikant I; Ughade, Suresh

    2012-01-01

    Biostatistics plays an important role in measuring, understanding, and describing the overall health and well-being of a population. Biostatistics as a subject evolved from the application of statistics in various research aspects of biology, biomedical care, and public health. However, with a recent increase in number of health and pharmacy related research, the demand for trained biostatisticians is also increasing. The present paper is an attempt to undertake a situational analysis of biostatistics education in India. A systematic, predefined approach, with three parallel strategies was used to collect and assemble the data regarding training in biostatistics in India. Our study results show that there is paucity of programs providing specialized training in biostatistics in India. Only about 19 institutions in India are offering various courses in biostatistics/medical statistics/health statistics/biometry. It is important to look into the current capacity building initiatives in this domain. Some other means for giving importance to biostatistics could be by making it a separate branch/specialization in a majority of the institutions, particularly in medical colleges.

  20. Cataract surgery following KAMRA presbyopic implant

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    Tan TE

    2013-09-01

    Full Text Available Tien-En Tan,1,2 Jodhbir S Mehta2–4 1Yong Loo Lin School of Medicine, National University of Singapore, Singapore; 2Singapore National Eye Centre, Singapore; 3Singapore Eye Research Institute, Singapore; 4Department of Clinical Sciences, Duke-NUS Graduate Medical School, Singapore Abstract: Intrastromal corneal inlays are an emerging treatment for presbyopic patients. The KAMRA™ small aperture inlay was the first such inlay to receive Conformité Européenne (CE marking in 2005. It has been shown to improve uncorrected near and intermediate visual acuity without adversely affecting uncorrected distance visual acuity. Due to the age of presbyopic patients, they may eventually develop cataracts. In two such cases, we found that cataract surgery with the KAMRA implant left in place was not technically more difficult, and that the surgical procedure could be improved by additional ocular rotations to improve visualization. Biometry readings were reliable, and it appeared that the SRK/T formula was accurate for calculation of intraocular lens power. Cataract surgery with the KAMRA implant left in situ is a viable option for patients. Keywords: cataract surgery, KAMRA, corneal inlay, AcuTarget, presbyopia

  1. Dextrose as carbon source in the culture of Litopenaeus vannamei (Boone, 1931 in a zero exchange system

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    Sabrina M Suita

    2015-07-01

    Full Text Available This work compared the use of dextrose and molasses as carbon sources for biofloc development, water quality maintenance, microorganism composition and growth performance of Litopenaeus vannamei juveniles in biofloc technology (BFT. Two treatments, dextrose and molasses, were tested with four replicates each. Carbon was added to achieve a C:N-AT (N-(NH3+NH4+ ratio of 6:1. Physical and chemical water quality variables were monitored daily, and shrimp growth was estimated through periodic biometry. After 30 days, survival, final biomass, and feeding conversion rate (FCR were determined. Dissolved organic carbon, chlorophyll-a, floc volume, total ammonia, nitrite, nitrate and phosphate concentrations, and microorganisms (qualified by groups, were measured every three days. Water quality variables remained within acceptable levels throughout the experimental period, except for nitrite, which reached higher levels than recommended for this species. The use of dextrose resulted in higher water transparency, which influenced the remaining centric diatoms. A superior shrimp performance was observed at this treatment, presumably because of variations on the microbial community. Therefore, it is concluded that the addition of dextrose results in a superior growth performance of L. vannamei when cultured in BFT systems.

  2. In situ effects of metal contamination from former uranium mining sites on the health of the three-spined stickleback (Gasterosteus aculeatus, L.).

    Science.gov (United States)

    Le Guernic, Antoine; Sanchez, Wilfried; Bado-Nilles, Anne; Palluel, Olivier; Turies, Cyril; Chadili, Edith; Cavalié, Isabelle; Delahaut, Laurence; Adam-Guillermin, Christelle; Porcher, Jean-Marc; Geffard, Alain; Betoulle, Stéphane; Gagnaire, Béatrice

    2016-08-01

    Human activities have led to increased levels of various pollutants including metals in aquatic ecosystems. Increase of metallic concentrations in aquatic environments represents a potential risk to exposed organisms, including fish. The aim of this study was to characterize the environmental risk to fish health linked to a polymetallic contamination from former uranium mines in France. This contamination is characterized by metals naturally present in the areas (manganese and iron), uranium, and metals (aluminum and barium) added to precipitate uranium and its decay products. Effects from mine releases in two contaminated ponds (Pontabrier for Haute-Vienne Department and Saint-Pierre for Cantal Department) were compared to those assessed at four other ponds outside the influence of mine tailings (two reference ponds/department). In this way, 360 adult three-spined sticklebacks (Gasterosteus aculeatus) were caged for 28 days in these six ponds before biomarker analyses (immune system, antioxidant system, biometry, histology, DNA integrity, etc.). Ponds receiving uranium mine tailings presented higher concentrations of uranium, manganese and aluminum, especially for the Haute-Vienne Department. This uranium contamination could explain the higher bioaccumulation of this metal in fish caged in Pontabrier and Saint-Pierre Ponds. In the same way, many fish biomarkers (antioxidant and immune systems, acetylcholinesterase activity and biometric parameters) were impacted by this environmental exposure to mine tailings. This study shows the interest of caging and the use of a multi-biomarker approach in the study of a complex metallic contamination. PMID:27272751

  3. Hatchery production of European lobster (Homarus gammarus, L.: broodstock management and effects of different holding systems on larval survival

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    Rodolfo Ballestrazzi

    2010-01-01

    Full Text Available The biometry of wild berried females was collected during an entire reproductive season at the South-Wexford Lobster Co-op hatchery in Nethertown, Ireland. Second degree regressions between total body weight (TW, g and carapace length (CL, mm (TW=CL2 -36.675CL+1793.2, R2=0.9022 and number of “weaned” larvae and carapace length (Larvae number=1.217CL2–21.777CL-5281.1, R2 =0.743 were observed. Afterwards, berried females were divided according to two variables: 1. holding system: recirculating system (Rs vs barrel (Bar; 2. CL size: 120 mm (C. The total weight of larvae (212.5 vs 92.4 g and their numbers (7788 vs 5679 were significantly higher for the largest females than for the smaller sizes (P<0.01. The maximum survival rate of larvae (77.86% was noted for initial stocking density <1000 individuals/hopper, but the optimal stocking density for management purposes in the hatchery is higher (2001-3000 individuals/hopper.

  4. Correction for near vision in pseudophakic patients

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    Dujić Mirjana

    2004-01-01

    Full Text Available Objective of the study was to show the mean values of correction for near vision and to discuss the presbyopic correction in pseudophakic patients. Setting was the Eye department where authors work. Inclusion criteria for 55 patients were native or corrected distant vision of 0.8-1.0 on Snellen's chart; 0,6 on Jagger's chart for near vision; round pupil and good position of the implant. Biometry of the anterior chamber depth with Alcon biophysics during distant and near vision was performed in our study. „Hi square" test was carried out and it was concluded that patients younger than 59 years (41 eyes had median correction of +2.0 dsph, while patients older than 60 years (36 eyes had correction of+3.0 dsph, but it was not statistically significant. There was no statistically significant difference of the correction between pseudophakic (41 and phakic (19 eyes in patients younger than 59 years. The anterior movement of the IOL was 0.18 mm in the younger group and 0.15 mm in the older group. With good IOL movement and new materials which could have changeable refractive power, the problem of pseudophakic correction for near vision might be solved.

  5. OCT在小鼠眼底检查中的研究进展%Developments in mice fundus examination using optical coherence tomography

    Institute of Scientific and Technical Information of China (English)

    孙杏红; 宋清露; 聂桥; 袁松涛

    2014-01-01

    OCT是应用测量光回波时间延迟的原理而获得被测组织的分层,该成像技术提供的视网膜断层截面图与组织形态学有很好的相关性 . 该技术目前也广泛应用于动物实验研究,特别是在小鼠的视网膜疾病研究中可以获取高分辨率的活体组织图像.现对小鼠视网膜OCT图像的成像装置、成像质量、图像分析、血流成像、疾病模型研究等方面的进展进行综述.%Spectral-domain optical coherence tomography (SD-OCT) is a method that provides depth profiles of the fundus that correlate well with histological data based on the measurement of light echo time delay,It has been used in animal experiments in recent years,especially in the study of the retina in mice.It produces a high-quality live image of mice retina in vivo.This review presents the most recent progress on the value of using OCT devices for research on image quality,biometry,retinal blood flow imaging and disease models.

  6. Phase-sensitive multiple reference optical coherence tomography (Conference Presentation)

    Science.gov (United States)

    Dsouza, Roshan I.; Subhash, Hrebesh; Neuhaus, Kai; Hogan, Josh; Wilson, Carol; Leahy, Martin

    2016-03-01

    Multiple reference OCT (MR-OCT) is a recently developed novel time-domain OCT platform based on a miniature reference arm optical delay, which utilizes a single miniature actuator and a partial mirror to generate recirculating optical delay for extended axial-scan range. MR-OCT technology promises to fit into a robust and cost-effective design, compatible with integration into consumer-level devices for addressing wide applications in mobile healthcare and biometry applications. Using conventional intensity based OCT processing techniques, the high-resolution structural imaging capability of MR-OCT has been recently demonstrated for various applications including in vivo human samples. In this study, we demonstrate the feasibility of implementing phase based processing with MR-OCT for various functional applications such as Doppler imaging and sensing of blood vessels, and for tissue vibrography applications. The MR-OCT system operates at 1310nm with a spatial resolution of ~26 µm and an axial scan rate of 600Hz. Initial studies show a displacement-sensitivity of ~20 nm to ~120 nm for the first 1 to 9 orders of reflections, respectively with a mirror as test-sample. The corresponding minimum resolvable velocity for these orders are ~2.3 µm/sec and ~15 µm/sec respectively. Data from a chick chorioallantoic membrane (CAM) model will be shown to demonstrate the feasibility of MR-OCT for imaging in-vivo blood flow.

  7. BIOMETRIA TESTICULAR DE CORDEIROS EM DIFERENTES IDADES E ALIMENTADOS COM NÍVEIS CRESCENTES DE FIBRA EM DETERGENTE NEUTRO ORIUNDA DA FORRAGEM

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    Roberta Moura Assis

    2014-12-01

    Full Text Available The experiment was conducted at the Federal University of Lavras. We used 64 lambs, which, after birth, were divided into four treatments: Diet A - 8.67; Diet B - 17.34, Diet C - 26.01 and Diet D - 34.68% neutral detergent fiber from forage (NDFf in the diet. At three days of age, lambs were separated from their mothers and began receiving sheep milk replacer until weaning at 55 days. The experimental diets were isonitrogenous, formulated to meet the nutritional requirements of growing lambs, except for energy. Four digestibility diet essays were conducted for determining of metabolizable energy (ME at different ages (43, 83, 123 and 173 days of life. The biometric variables analyzed were weight, testis weight, scrotal circumference and volume. The experimental design was in randomized blocks (DBC, in a 4 x 4 factorial arrangement (four levels of dietary NDFf and four slaughter ages, with 4 replicates per treatment. The estimation of scrotal circumference by weight proved to be more efficient than in function of age. The prediction of the size and weight of the testes through scrotal circumference was more efficient than by the age and body weight. Animals fed diets with less fiber from forage, that is, with greater amount of energy, showed better results of testis biometry compared to the animals fed smaller amounts of energy.

  8. Ouabain inhibition of Na/K-ATPase across the retina prevents signed refractive compensation to lens-induced defocus, but not default ocular growth in young chicks [v1; ref status: indexed, http://f1000r.es/rt

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    Melanie J Murphy

    2013-03-01

    Full Text Available Purpose: The relevance of retinal integrity and energy pathways to ocular growth and induction of refractive errors has seldom been investigated. Thus, we used ouabain to target the channels that are essential for the maintenance of membrane potentials in cells, sodium potassium ATPase (Na/K-ATPase, to examine refractive compensation and ocular growth in response to lens-induced defocus in the chick. Methods:  A single intravitreal injection of 1 mM ouabain in dimethyl sulfoxide (DMSO carrier or DMSO alone was followed by monocular defocus with positive or negative 10 D lens (or no lens from post-hatching days 5-9 under 12/12 hr light/dark conditions. Biometry and dark-adapted flash and electroretinography (ERG were conducted on day 9, followed by immunohistological analyses. Results: Ouabain inhibited differential ocular growth and refractive compensation to signed defocus compared to DMSO. By 4-days post-ouabain injection all components of the typical ERG responses to light had been eliminated, and widespread histological damage was apparent, though some ‘default state’ ocular growth was measurable. Immunohistochemistry demonstrated reduction in the specialized water channel Aquaporin 4 (AQP4 expression and increased evidence of caspase 3 expression (a cell death associated protein in ouabain-treated eyes compared with DMSO alone. Conclusion: The current study demonstrates that blockade of photoreceptor and inner retinal responses to light onset and offset by ouabain inhibits differential refractive compensation to optical blur, but does not prevent ocular growth.

  9. IGFBP-1 marker of cervical ripening and predictor of preterm birth.

    Science.gov (United States)

    Mešić Ðogić, Larisa; Mićić, Dragana; Omeragić, Feđa; Kovač, Refka; Fazlagić, Seid

    2016-08-01

    Aim To establish a correlation between positive values of IGFBP-1(>10 mg/L, Actim Partus Test, APT) and premature cervical ripening in imminent preterm labor. Methods A prospective study was conducted in primary health care centers in Tuzla, Gynecology and Obstetrics Clinic of the University Clinical Centre in Tuzla and General Hospital Tešanj. The study included 50 women (singleton pregnancy, 28-37 week) with imminent preterm labor diagnosed by cervical biometry and modified Bishop score) (examinees) and 30 healthy pregnant women (control group). The presence of IGFBP-1 was tested in cervical secretion several times in weeks 28-37 until a positive test was shown. Results IGFBP-1 was positive in 43 (86%) examinees and in six (20%) patients from the control group (p=0.001). In 31 (62%) examinees APT was positive in weeks 28-30, and in nine (18%) in weeks 31- 33, while three (6%) examinees had positive test in 34-37 week; in the control group, three (10%) were tested positive in weeks 31-33 and three (10%) in weeks 34-37. At first testing (28-30 weeks) APT was statistically significantly more frequently positive in the examined group (pIGFBP -1 in cervical secretion were highly correlated with preterm labor. Screening for IGFBP could help in preventing preterm labor and its complications. PMID:27452330

  10. Ultrasound determination of gestational age using placental thickness in female dogs: an experimental study.

    Science.gov (United States)

    Maldonado, André Luiz Louzada; Araujo Júnior, Edward; Mendonça, Débora Sartori; Nardozza, Luciano Marcondes Machado; Moron, Antonio Fernandes; Ajzen, Sérgio Aron

    2012-01-01

    Objective. To verify if the placental thickness allows determining the gestational age, evaluating the correlation between the referred gestational age with the studied one, and the accuracy of the placental thickness measurement (biometry) with fetal morphologic parameters in bitches. Methods. The placental thickness of 336 bitches of diverse breeds was evaluated. Bitches were divided in three groups by body weight: small, medium, and big large size. The gestations pregnancies were evaluated by ultrasound from the third week of gestation. An analysis was performed between the mean values of the gestational age obtained of placental thickness by adjustment of curves and the reported gestational age. Student's t-test was applied to compare the mean of reported and placental thickness gestational age. Significance was defined as P < 0.05. Results. A positive and statistically significant correlation exists between the placental thickness and gestational age. The expression that presents the best correlation coefficient and explanation was thickness of placenta = 0.021x gestational age -0.314. Conclusion. It is possible to determine the gestational age in relation to the placental thickness measured by ultrasound in bitches with a satisfactory accuracy in relation to fetal morphologic parameters as gestational vesicle, ribs, or kidneys. PMID:22848867

  11. Effect of dietary aloe vera on growth and lipid peroxidation indices in rainbow trout (Oncorhynchus mykiss).

    Science.gov (United States)

    Golestan, Ghazale; Salati, Amir Parviz; Keyvanshokooh, Saeed; Zakeri, Mohammad; Moradian, Hossein

    2015-01-01

    Aloe vera has been used worldwide in pharmaceutical, food and cosmetic industries due to the plethora of biological activities of its constituents. This study was done to evaluate the effects of dietary aloe vera on growth and lipid peroxidation in rainbow trout (Oncorhynchus mykiss). A total number of 480 O. mykiss (mean weight 9.50 ± 0.85 g) were randomized into four experimental groups including one control and three experimental groups that aloe vera was incorporated in their diet at 0.5, 1.0 and 2.0 g kg(-1). Trial was done for eight weeks. Then biometry and blood sampling were done. Plasma malondialdehyde, ferric reducing ability of plasma and growth index were estimated at the end of study. The results showed that aloe vera extract did not affect growth indices. Malondialdehyde was increased in the experimental group compared to the control group but ferric reducing ability of plasma showed a decrease in experimental groups (p aloe vera have adverse effects on antioxidant defense system in O. mykiss. PMID:25992253

  12. Anterior Eye Imaging with Optical Coherence Tomography

    Science.gov (United States)

    Huang, David; Li, Yan; Tang, Maolong

    The development of corneal and anterior segment optical coherence tomography (OCT) technology has advanced rapidly in recently years. The scan geometry and imaging wavelength are both important choices to make in designing anterior segment OCT systems. Rectangular scan geometry offers the least image distortion and is now used in most anterior OCT systems. The wavelength of OCT light source affects resolution and penetration. An optimal choice of the OCT imaging wavelength (840, 1,050, or 1,310 nm) depends on the application of interest. Newer generation Fourier-domain OCT technology can provide scan speed 100-1000 times faster than the time-domain technology. Various commercial anterior OCT systems are available on the market. A wide spectrum of diagnostic and surgical applications using anterior segment OCT had been investigated, including mapping of corneal and epithelial thicknesses, keratoconus screening, measuring corneal refractive power, corneal surgery planning and evaluation in LASIK, intracorneal ring implantation, assessment of angle closure glaucoma, anterior chamber biometry and intraocular lens implants, intraocular lens power calculation, and eye bank donor cornea screening.

  13. Assessment of Full-Eye Response to Osmotic Stress in Mouse Model In Vivo Using Optical Coherence Tomography

    Directory of Open Access Journals (Sweden)

    Yang Ni

    2015-01-01

    Full Text Available NaCl based solutions were applied as osmotic stress agents to alter the hydration state of the mouse eye. Full-eye responses to these osmotic challenges were monitored in vivo using a custom-built optical coherence tomography (OCT with an extended imaging range of 12.38 mm. Dynamic changes in the mouse eye were quantified based on the OCT images using several parameters, including the central corneal thickness (CCT, the anterior chamber depth (ACD, the crystalline lens thickness (LT, the cornea-retina distance (CRD, the iris curvature (IC, and the lens scattering intensity (LSI. Apparent but reversible changes in the morphology of almost all the ocular components and the light transparency of the lens are exhibited. Particularly, the ocular dehydration induced by the hypertonic challenges resulted in a closing of the iridocorneal angle and an opacification of the lens. Our results indicated that the ocular hydration is an important physiological process which might be correlated with various ocular disorders, such as dry eye, cataract, and angle-closure glaucoma, and would affect the biometry and imaging of the eye. OCT uniquely enables the comprehensive study of the dynamic full-eye responses to the ocular hydration in vivo.

  14. IMAS-Fish: Integrated MAnagement System to support the sustainability of Greek Fisheries resources. A multidisciplinary web-based database management system: implementation, capabilities, utilization and future prospects for fisheries stakeholde

    Directory of Open Access Journals (Sweden)

    S. KAVADAS

    2013-04-01

    Full Text Available This article describes in detail the “IMAS-Fish” web-based tool implementation technicalities and provides examples on how can it be used for scientific and management purposes setting new standards in fishery science. “IMAS-Fish” was developed to support the assessment of marine biological resources by: (i homogenizing all the available datasets under a relational database, (ii facilitating quality control and data entry, (iii offering easy access to raw data, (iv providing processed results through a series of classical and advanced fishery statistics algorithms, and (v visualizing the results on maps using GIS  technology. Available datasets cover among others: Fishery independent experimental surveys data (locations, species, catch compositions, biological data; Commercial fishing activities (fishing gear, locations, catch compositions, discards; Market sampling data (species, biometry, maturity, ageing; Satellite derived ocean data (Sea surface temperature, Salinity, Wind speed, Chlorophyll-a concentrations, Photosynthetically active radiation; Oceanographic parameters (CTD measurements; Official national fishery statistics; Fishing fleet registry and VMS  data; Fishing ports inventory; Fishing legislation archive (national and EU; Bathymetry grids. Currently, the homogenized database holds a total of more than 100,000,000 records. The web-based application is accessible through an internet browser and can serve as a valuable tool for all involved stakeholders: fisheries scientists, state officials responsible for management, fishermen cooperatives, academics, students and NGOs.

  15. Pediatric cataract: challenges and future directions.

    Science.gov (United States)

    Medsinge, Anagha; Nischal, Ken K

    2015-01-01

    Cataract is a significant cause of visual disability in the pediatric population worldwide and can significantly impact the neurobiological development of a child. Early diagnosis and prompt surgical intervention is critical to prevent irreversible amblyopia. Thorough ocular evaluation, including the onset, duration, and morphology of a cataract, is essential to determine the timing for surgical intervention. Detailed assessment of the general health of the child, preferably in conjunction with a pediatrician, is helpful to rule out any associated systemic condition. Although pediatric cataracts have a diverse etiology, with the majority being idiopathic, genetic counseling and molecular testing should be undertaken with the help of a genetic counselor and/or geneticist in cases of hereditary cataracts. Advancement in surgical techniques and methods of optical rehabilitation has substantially improved the functional and anatomic outcomes of pediatric cataract surgeries in recent years. However, the phenomenon of refractive growth and the process of emmetropization have continued to puzzle pediatric ophthalmologists and highlight the need for future prospective studies. Posterior capsule opacification and secondary glaucoma are still the major postoperative complications necessitating long-term surveillance in children undergoing cataract surgery early in life. Successful management of pediatric cataracts depends on individualized care and experienced teamwork. We reviewed the etiology, preoperative evaluation including biometry, choice of intraocular lens, surgical techniques, and recent developments in the field of childhood cataract. PMID:25609909

  16. Influence of scrotal bipartition on spermatogenesis yield and sertoli cell efficiency in sheep

    Directory of Open Access Journals (Sweden)

    Ramon T.G.A. Rodrigues

    2016-04-01

    Full Text Available Abstract With the objective to assess the effect of scrotal bipartition on spermatogenesis in sheep, the testes were used from 12 crossbred rams of sheep farms in the municipality of Patos, Paraíba, Brazil, distributed into two groups: GI with six rams with scrotal bipartition, and GII with six rams without scrotal bipartition. The testicular biometry was measured and the testes were collected, fixed in Bouin and fragments were processed to obtain histological slides. The spermatogenesis yield and the Sertoli cell efficiency was estimated by counting the cells of the spermatogenetic line at stage one of the seminiferous epithelium cycle and the Sertoli cells. The results were submitted to analysis of variance with the ASSISTAT v.7.6 program and the mean values were compared by the Student-Newman-Keuls test (SNK at 5% significance. The testicular biometric parameters did not show statistical difference (p>0.05 between the groups. The meiotic, spermatogenetic and Sertoli cell efficiency were higher in bipartitioned rams (p0.05 between GI and GII. The results indicated that there is superiority in the spermatogenetic parameters of bi-partitioned rams, suggesting that these sheep present, as reported in goats, indication of better reproductive indices.

  17. Laser speckle decorrelation for fingerprint acquisition

    Science.gov (United States)

    Schirripa Spagnolo, Giuseppe; Cozzella, Lorenzo

    2012-09-01

    Biometry is gaining popularity as a physical security approach in situations where a high level of security is necessary. Currently, biometric solutions are embedded in a very large and heterogeneous group of applications. One of the most sensible is for airport security access to boarding gates. More airports are introducing biometric solutions based on face, fingerprint or iris recognition for passenger identification. In particular, fingerprints are the most widely used biometric, and they are mandatorily included in electronic identification documents. One important issue, which is difficult to address in traditional fingerprint acquisition systems, is preventing contact between subsequent users; sebum, which can be a potential vector for contagious diseases. Currently, non-contact devices are used to overcome this problem. In this paper, a new contact device based on laser speckle decorrelation is presented. Our system has the advantage of being compact and low-cost compared with an actual contactless system, allowing enhancement of the sebum pattern imaging contrast in a simple and low-cost way. Furthermore, it avoids the spreading of contagious diseases.

  18. Comparing the importance of prognostic factors in Cox and logistic regression using SAS.

    Science.gov (United States)

    Heinze, Georg; Schemper, Michael

    2003-06-01

    Two SAS macro programs are presented that evaluate the relative importance of prognostic factors in the proportional hazards regression model and in the logistic regression model. The importance of a prognostic factor is quantified by the proportion of variation in the outcome attributable to this factor. For proportional hazards regression, the program %RELIMPCR uses the recently proposed measure V to calculate the proportion of explained variation (PEV). For the logistic model, the R(2) measure based on squared raw residuals is used by the program %RELIMPLR. Both programs are able to compute marginal and partial PEV, to compare PEVs of factors, of groups of factors, and even to compare PEVs of different models. The programs use a bootstrap resampling scheme to test differences of the PEVs of different factors. Confidence limits for P-values are provided. The programs further allow to base the computation of PEV on models with shrinked or bias-corrected parameter estimates. The SAS macros are freely available at www.akh-wien.ac.at/imc/biometrie/relimp

  19. Analysis of the horizontal corneal diameter, central corneal thickness, and axial length in premature infants

    Directory of Open Access Journals (Sweden)

    Ozdemir Ozdemir

    2014-08-01

    Full Text Available Purpose: To determine the horizontal corneal diameter, central corneal thickness, and axial length in premature infants. Methods: Infants with a birth weight of less than 2,500 g or with a gestation period of less than 36 weeks were included in the study. Infants with retinopathy of prematurity (ROP were allocated to Group 1 (n=138, while those without ROP were allocated to Group 2 (n=236. All infants underwent a complete ophthalmologic examination, including corneal diameter measurements, pachymetry, biometry, and fundoscopy. Between-group comparisons of horizontal corneal diameter, central corneal thickness, and axial lengths were performed. Independent sample t-tests were used for statistical analysis. Results: Data was obtained from 374 eyes of 187 infants (102 female, 85 male. The mean gestational age at birth was 30.7 ± 2.7 weeks (range 25-36 weeks, the mean birth weight was 1,514 ± 533.3 g (range 750-1,970 g, and the mean postmenstrual age at examination was 40.0 ± 4.8 weeks. The mean gestational age and the mean birth weight of Group 1 were statistically lower than Group 2 (p0.05. Conclusions: The presence of ROP in premature infants does not alter the horizontal corneal diameter, central corneal thickness, or axial length.

  20. Milestones in the History of Behavioral Genetics: Participant Observer%一个参与者眼中的行为遗传学史上的里程碑

    Institute of Scientific and Technical Information of China (English)

    Irving I. Gottesman

    2008-01-01

    行为遗传学的历史,从横切面看,就好似一个由心理学、遗传学、生物学、进化论、人类学、人口学、生物统计、社会学以及法哲学等学科组合成的万花筒.任何一对学科的演进都呈正相关.虽然任何一对学科都不至于相互否定,但是,他们各自独特的历史和人物,又使得每一对学科并不完全相似.%The history of Behavioral Genetics and (now) genomics, viewed in cross-section, is a kaleidoscopic pattern derived from the individual histories of the psychology of individual differences, plant, animal, and human genetics, biology, evolution, anthropology, demography, biometry, sociology, jurisprudence, and some of their neighboring disciplines. There will be positive correlations between any two renditions of the historian's task, but the idiosyncratic experiences of any two with the listed contributors to the pattern guarantees that the correlations may be modest, without invalidating either one.

  1. Biometrické rozpoznávání 3D modelů obličeje

    OpenAIRE

    Michálek, Martin

    2014-01-01

    Tato práce se zabývá rozpoznáváním 3D modelů obličeje. Seznamuje s pojmy z oblasti biometrie a s fungováním biometrického systému. Popsané jsou zde metody pro rozpoznávání 2D i 3D modelů obličeje. Následně je navrhnutý a implementovaný systém pro rozpoznávání 3D obličejů. Tento systém rozděluje obličej na několik oblastí podle polohy významných bodů a pak je porovnává samostatně. Výsledný systém slučuje výsledky algortimů vlastních obličejů a ARENA....

  2. Accuracy of Intraocular Lens Power Calculation Formulas for Highly Myopic Eyes

    Science.gov (United States)

    Zhang, Yichi; Liang, Xiao Ying; Liu, Shu; Lee, Jacky W. Y.; Bhaskar, Srinivasan; Lam, Dennis S. C.

    2016-01-01

    Purpose. To evaluate and compare the accuracy of different intraocular lens (IOL) power calculation formulas for eyes with an axial length (AL) greater than 26.00 mm. Methods. This study reviewed 407 eyes of 219 patients with AL longer than 26.0 mm. The refractive prediction errors of IOL power calculation formulas (SRK/T, Haigis, Holladay, Hoffer Q, and Barrett Universal II) using User Group for Laser Interference Biometry (ULIB) constants were evaluated and compared. Results. One hundred seventy-one eyes were enrolled. The Barrett Universal II formula had the lowest mean absolute error (MAE) and SRK/T and Haigis had similar MAE, and the statistical highest MAE were seen with the Holladay and Hoffer Q formulas. The interquartile range of the Barrett Universal II formula was also the lowest among all the formulas. The Barrett Universal II formulas yielded the highest percentage of eyes within ±1.0 D and ±0.5 D of the target refraction in this study (97.24% and 79.56%, resp.). Conclusions. Barrett Universal II formula produced the lowest predictive error and the least variable predictive error compared with the SRK/T, Haigis, Holladay, and Hoffer Q formulas. For high myopic eyes, the Barrett Universal II formula may be a more suitable choice. PMID:27119018

  3. Accuracy of Intraocular Lens Power Calculation Formulas for Highly Myopic Eyes

    Directory of Open Access Journals (Sweden)

    Yichi Zhang

    2016-01-01

    Full Text Available Purpose. To evaluate and compare the accuracy of different intraocular lens (IOL power calculation formulas for eyes with an axial length (AL greater than 26.00 mm. Methods. This study reviewed 407 eyes of 219 patients with AL longer than 26.0 mm. The refractive prediction errors of IOL power calculation formulas (SRK/T, Haigis, Holladay, Hoffer Q, and Barrett Universal II using User Group for Laser Interference Biometry (ULIB constants were evaluated and compared. Results. One hundred seventy-one eyes were enrolled. The Barrett Universal II formula had the lowest mean absolute error (MAE and SRK/T and Haigis had similar MAE, and the statistical highest MAE were seen with the Holladay and Hoffer Q formulas. The interquartile range of the Barrett Universal II formula was also the lowest among all the formulas. The Barrett Universal II formulas yielded the highest percentage of eyes within ±1.0 D and ±0.5 D of the target refraction in this study (97.24% and 79.56%, resp.. Conclusions. Barrett Universal II formula produced the lowest predictive error and the least variable predictive error compared with the SRK/T, Haigis, Holladay, and Hoffer Q formulas. For high myopic eyes, the Barrett Universal II formula may be a more suitable choice.

  4. Paediatric intraocular lens implants: accuracy of lens power calculations.

    Science.gov (United States)

    O'Gallagher, M K; Lagan, M A; Mulholland, C P; Parker, M; McGinnity, G; McLoone, E M

    2016-09-01

    PurposeThis study aims to evaluate the accuracy of lens prediction formulae on a paediatric population.MethodsA retrospective case-note review was undertaken of patients under 8 years old who underwent cataract surgery with primary lens implantation in a regional referral centre for paediatric ophthalmology, excluding those whose procedure was secondary to trauma. Biometric and refractive data were analysed for 43 eyes, including prediction errors (PE). Statistical measures used included mean absolute error (MAE), median absolute error (MedAE), Student's t-test and Lin's correlation coefficient.ResultsThe mean PE using the SRK-II formula was +0.96 D (range -2.47D to +2.41 D, SD 1.33 D, MAE 1.38 D, MedAE 1.55, n=15). The mean PE was smaller using SRK/T (-0.18 D, range -3.25 D to +3.95 D, SD 1.70 D, MAE 1.30 D, MedAE 1.24, n=27). We performed an analysis of the biometry data using four different formula (Hoffer Q, Holladay 1, SRK-II and SRK/T). Hoffer Q showed a smaller MedAE than other formulae but also a myopic bias.ConclusionOur clinical data suggest SRK/T was more accurate in predicting post-operative refraction in this cohort of paediatric patients undergoing cataract surgery. Hoffer Q may have improved accuracy further.

  5. Prenatal brain MRI of fetuses with Zika virus infection

    Energy Technology Data Exchange (ETDEWEB)

    Guillemette-Artur, Prisca [Centre Hospitalier de Polynesie Francaise, Service de Radiologie, Pirae, Tahiti (Country Unknown); Besnard, Marianne [Centre Hospitalier de Polynesie Francaise, Service de Reanimation Neo-natale, Pirae, Tahiti (Country Unknown); Eyrolle-Guignot, Dominique [Centre Hospitalier de Polynesie Francaise, Service d' Obstetrique, Pirae, Tahiti (Country Unknown); Jouannic, Jean-Marie [Universite Pierre et Marie Curie, Service de Medecine Foetale, Hopital d' Enfants Armand-Trousseau, Paris (France); Garel, Catherine [Hopital d' Enfants Armand-Trousseau, Department of Radiology, Paris (France)

    2016-06-15

    An outbreak of Zika virus was observed in French Polynesia in 2013-2014. Maternal Zika virus infection has been associated with fetal microcephaly and severe cerebral damage. To analyze the MRI cerebral findings in fetuses with intrauterine Zika virus infection. We retrospectively analyzed prospectively collected data. Inclusion criteria comprised cases with (1) estimated conception date between June 2013 and May 2014, (2) available US and MRI scans revealing severe fetal brain lesions and (3) positive polymerase chain reaction for Zika virus in the amniotic fluid. We recorded pregnancy history of Zika virus infection and analyzed US and MRI scans. Three out of 12 cases of severe cerebral lesions fulfilled all inclusion criteria. History of maternal Zika virus infection had been documented in two cases. Calcifications and ventriculomegaly were present at US in all cases. MRI showed micrencephaly (n = 3), low cerebellar biometry (n = 2), occipital subependymal pseudocysts (n = 2), polymicrogyria with laminar necrosis and opercular dysplasia (n = 3), absent (n = 1) or hypoplastic (n = 1) corpus callosum and hypoplastic brainstem (n = 1). Severe cerebral damage was observed in our series, with indirect findings suggesting that the germinal matrix is the principal target for Zika virus. The lesions are very similar to severe forms of congenital cytomegalovirus and lymphocytic choriomeningitis virus infections. (orig.)

  6. Use of External Cephalic Version and Amnioreduction in the Delivery of a Fetal Demise with Macrocephaly Secondary to Massive Intracranial Teratoma

    Directory of Open Access Journals (Sweden)

    Matthew J. Blitz

    2015-04-01

    Full Text Available Introduction - Congenital intracranial tumors are rare and often incidentally diagnosed on routine ultrasound. We report a case of a fetal demise with a massive intracranial teratoma at 25 weeks of gestation and the management of her delivery in the setting of macrocephaly, breech presentation, and polyhydramnios. Case - A 31-year-old G3P1011 woman at 25 weeks' gestation presented with a recent fetal demise and a fetal intracranial tumor first identified at 16 weeks' gestational age. The patient had declined termination of pregnancy. Biometry was consistent with 24 weeks' gestation, except for a head circumference of 394.4 mm consistent with 39 weeks' gestation. The fetus was in a breech presentation. An external cephalic version (ECV was successfully performed under epidural anesthesia and an amnioreduction was then performed to stabilize the fetal position. Immediate induction of labor and vaginal delivery followed. Discussion - ECV and amnioreduction may help facilitate delivery in cases of fetal demise complicated by macrocephaly, malpresentation, and polyhydramnios.

  7. Fetal growth restriction is associated with malaria in pregnancy

    DEFF Research Database (Denmark)

    Briand, Valérie; Saal, Jessica; Ghafari, Caline;

    2016-01-01

    BACKGROUND: Few studies have evaluated the effect of malaria on intrauterine growth restriction on the basis of the fetal growth rate, rather than just the small-for-gestational age z score. Here, we assessed the impact of malaria on IUGR, using data from a longitudinal, ultrasonography-based fol...... and late pregnancy on fetal growth. This stresses the importance of starting preventive measures against malaria as early as possible during pregnancy.......BACKGROUND: Few studies have evaluated the effect of malaria on intrauterine growth restriction on the basis of the fetal growth rate, rather than just the small-for-gestational age z score. Here, we assessed the impact of malaria on IUGR, using data from a longitudinal, ultrasonography......-based follow-up study of Beninese women. METHODS: A total of 1016 women were followed up from gestational week 17 to delivery. Malaria was detected every month. Women underwent ultrasonography 4 times for gestational age determination and fetal biometry. We assessed the effect of malaria on birth weight...

  8. Prenatal maternal mental health and fetal growth restriction: a systematic review.

    Science.gov (United States)

    Lewis, A J; Austin, E; Galbally, M

    2016-08-01

    Maternal mental disorders during pregnancy are associated with a range of adverse health outcomes for offspring. This systematic review examines studies reporting on the relationship between maternal depression, anxiety or stress during pregnancy and fetal growth measured during pregnancy using ultrasound biometry. A systematic search of PsycINFO, Medline, Scopus, Web of Science and Embase was conducted and 1575 records were identified, with nine studies meeting inclusion criteria gathering data from over 7000 participants. All studies measured depression, six examined anxiety and depression, and five examined all three exposures. The majority measured symptoms rather than clinically diagnosable disorder. Studies consistently reported significant associations between maternal mental health, particularly anxiety symptoms, and reduced fetal head growth. Other fetal growth parameters showed inconsistent findings. A number of studies suggest that cortisol dysregulation associated with maternal mental health may play a role in fetal growth restriction. However, heterogeneity in the timing of growth measurement, assessment measures used for mental health and inconsistencies in adjustment for confounders, limits the synthesis and interpretation of findings. Future studies should consider differences in the timing, intensity and duration of mental health symptoms over pregnancy and should employ diagnostic assessment of mental disorders. Fetal growth should be repeatedly measured and further work is needed to establish the biological mechanisms involved. PMID:26983652

  9. Study of Some Morphological Characters of Three Trout Breed Farmed in Salmonid Exploitations from Moldova

    Directory of Open Access Journals (Sweden)

    Cătălin Emilian Nistor

    2014-05-01

    Full Text Available Study of morphological characters at fish by means of biometry is a frequently utilized method and consists in determining the variability of characters in groups of individuals, by direct measurement, weighting and statistical processing of obtained data.Effectuation of body measurements and weighting is used to determine the increase in length of fish and to evaluate the general physiological condition. Brook trout, rainbow trout, and brown trout were the object of the current study by analyzing of 50 individuals, 10 individuals in each batch (F1, F2, C1 C2 and I1, from two trout farms from Moldova. After processing the obtained data were calculated the most representative indexes and maintenance coefficients. The obtained values were between 3.49 at batch F1 and 3.94 at batch I1 for profile index; 1.5 at batch I1 and 1.75 at batch F1 for Fulton coefficient; 1.47 at batch F2 and 1.6 at batch I1 for Kiselev index; 41.36 for batch F1 and 47.94 at batch C2 for thickness index; 19.94 C1 batch and 22.08 at F1 batch for fleshy index I, and 19.05 C2 batch and 21.2 at I1 batch for fleshy index II. Having in view the obtained results we can conclude that the analyzed fishes had a good state of maintenance.

  10. Snímač otisku prstu

    OpenAIRE

    Kovář, Martin

    2015-01-01

    Diplomová práce se zabývá problematikou snímání otisku lidského prstu, která je v současnosti velmi aktuální a představuje nejrozšířenější biometrickou technologii. Teoretická část práce seznamuje čtenáře se základy daktyloskopie a biometrie a pojednává o technologiích využívaných ke snímání otisků, o metodách předzpracování pořízených obrazů a o komerčně dostupných bezkontaktních optických snímačích. Praktickou částí práce je realizace bezkontaktního optického snímače založeného na minipočít...

  11. Spring and autumn migration of the red-breasted flycatcher through the Kizilirmak delta, Turkey

    Institute of Scientific and Technical Information of China (English)

    Kiraz ERCIYAS-YAVUZ; Piotr ZDUNIAK; Y Sancar BARI

    2015-01-01

    The red-breasted flycatcherFicedula parva is a small passerine bird that breeds in Eastern Europe and across central Asia and winters on the Indian subcontinent.Birds from the western extreme of the breeding range migrating to and from the wintering grounds utilise a large longitudinal component en route that is not typical of the majority of European passerines. Therefore, it is one of the lesser-known species in Europe with respect to migration and biometrics. The aim of this study is to describe the numbers, phenology and biometry of the red-breasted flycatcher in relation to age, sex and migration season at a stopover site in northern Turkey. The number of individuals ringed in autumn was six times higher than in the spring passage. Furthermore, the period of the spring passage was shorter than in autumn, and in spring males migrate six days earlier than fe-males and juveniles; no such differences were found in autumn. Moreover, migrants carried more fuel reserves in spring than in autumn and no differences were recorded in the length of stopover duration. The study underlines the importance of further re-search into passerine migration across Turkey to better understand the whole migratory system of movements of the Palaearctic migratory passerine populations [Current Zoology 61 (3): 412–420, 2015].

  12. AVALIAÇÃO HISTOPATOLÓGICA DO FÍGADO DE Brachyplatystoma rousseauxii (CASTELNAU, 1855 DA BAÍA DO GUAJARÁ, BELÉM, PARÁ HISTOPATHOLOGICAL EVALUATION OF THE LIVER OF Brachyplatystoma rousseauxii (CASTELNAU, 1855 FROM GUAJARA’S BAY, BELÉM, PA

    Directory of Open Access Journals (Sweden)

    Simone Socorro Damasceno Santos

    2010-04-01

    Full Text Available The species Brachyplatystoma rousseauxii is one of the most important economic resources of the Amazon region. The objective of the present work was to analyze the histopathology of the liver of B. rousseauxii and to indicate this species as a biomonitor of the environmental quality of the Guajará Bay. Samples were collected in four areas: a control area and three areas identified as discharge sites of solid and liquid wastes. Sampling was carried out in four season periods: dry/wet season, wet season, wet/dry season and dry season. The number of collected specimens was 36. The fishes were submitted to biometry after catching. They presented mean total length of 33.45 cm (±7.72, total weight of 239.21 g (±135.24, and liver weight of 1.22 g (±0.56. Liver fragments were processed for light microscopy analysis. Histopathologic analysis demonstrated that 70% of the fish presented hepatitis, inflammation, fatty degeneration, and congestion, and that 30% presented well-organized liver structures, and they were considered healthy. The hepatic changes observed and the number of specimens collected suggest that the environmental quality of the Guajará Bay is affected and that the species B. rousseauxii  is probably adapted to the areas where there are waste discharges.

    KEY WORDS: Amazonian biome, biomonitor, liver, histopathology, fish.

    The species Brachyplatystoma rousseauxii is one of the most important economic resources of the Amazon region. The objective of the present work was to analyze the histopathology of the liver of B. rousseauxii and to indicate this species as a biomonitor of the environmental quality of the Guajará Bay. Samples were collected in four areas: a control area and three areas identified as discharge sites of solid and liquid wastes. Sampling was carried out in four season periods: dry/wet season, wet season, wet/dry season and dry season. The number of collected specimens was 36. The fishes were

  13. Anesthesia of silver catfish with eugenol: time of induction, cortisol response and sensory analysis of fillet Anestesia de jundiás com eugenol: tempo de indução, resposta ao cortisol e análise sensorial do filé

    Directory of Open Access Journals (Sweden)

    Mauro Alves da Cunha

    2010-10-01

    Full Text Available The aim of this study was to identify the time of anesthetic induction and recovery of silver catfish (Rhamdia quelen exposed to eugenol. It was also determined the efficacy of the anesthetic as a stress reducing agent and performed a sensory analysis of the fillets from fish exposed to this substance. The silver catfish were exposed to air for 1min to carry out biometry, and blood was collected at 0, 1 and 4 hours later. Eugenol can be used in the range of 20-50mg L-1 for anesthetic induction in silver catfish, and recovery time from anesthesia was not affected by eugenol concentration. The control group showed significantly higher cortisol levels 4 hours after biometry than at time zero. Fish anesthetized with eugenol (50mg L-1 presented significantly lower plasma cortisol levels than control fish at the same time. These data indicate that eugenol inhibits the rise of cortisol in the blood. The sensory analysis test demonstrated that eugenol modifies the flavor of the fillet and therefore is contra-indicated for anesthetization of silver catfish that are intended for human consumption.O objetivo deste estudo foi identificar o tempo de indução e recuperação anestésica de jundiás (Rhamdia quelen expostos ao eugenol, bem como a eficácia desse anestésico na inibição do estresse e realizar análise sensorial dos filés dos peixes expostos a essa substância. Os jundiás foram expostos ao ar por um minuto para realização da biometria, e o sangue foi coletado zero, uma e quatro horas depois. O eugenol pode ser usado na faixa de 20-50mg L-1 para a indução da anestesia em jundiás, e o tempo de recuperação da anestesia não foi afetado pela concentração do eugenol. O grupo de controle mostrou níveis significativamente mais elevados do cortisol quatro horas após a biometria que no tempo zero. Os peixes anestesiados com eugenol (50mg L-1 apresentaram níveis significativamente mais baixos do cortisol plasmático do que peixes do grupo

  14. Effect of primary iris and ciliary body cyst on anterior chamber angle in patients with shallow anterior chamber

    Institute of Scientific and Technical Information of China (English)

    Bing-hong WANG; Yu-feng YAO

    2012-01-01

    Objective:To evaluate the prevalence of primary iris and/or ciliary body cysts in eyes with shallow anterior chamber and their effect on the narrowing of the anterior chamber angle.Methods:Among the general physical check-up population,subjects with shallow anterior chambers,as judged by van Herick technique,were recruited for further investigation.Ultrasound biomicroscope (UBM) was used to detect and measure the cysts located in the iris and/or ciliary body,the anterior chamber depth (ACD),the angle opening distance at 500 μm (AOD500),and the trabecular-iris angle (TIA).A-scan ultrasonography was used to measure the ocular biometry,including lens thickness,axial length,lens/axial length factor (LAF),and relative lens position (RLP).The effect of the cyst on narrowing the corresponding anterior chamber angle and the entire angle was evaluated by the UBM images,ocular biometry,and gonioscopic grading.The eye with unilateral cyst was compared with the eye without the cyst for further analysis.Results:Among the 727 subjects with shallow anterior chamber,primary iris and ciliary body cysts were detected in 250 (34.4%) patients; among them 96 (38.4%) patients showed unilateral single cyst,21 (8.4%) patients had unilateral double cysts,and 42 (16.8%) patients manifested unilateral multiple and multi-quadrants cysts.Plateau iris configuration was found in 140 of 361 (38.8%) eyes with cysts.The mean size of total cysts was (0.6547±0.2319) mm.In evaluation of the effect of the cyst size and location on narrowing the corresponding angle to their position,the proportion of the cysts causing corresponding angle narrowing or closure among the cysts larger than 0.8 mm (113/121,93.4%) was found to be significantly higher than that of the cysts smaller than 0.8 mm (373/801,46.6%),and a significant higher proportion was also found in the cysts located at iridociliary sulcus (354/437,81.0%) than in that at the pars plicata (131/484,27.1%).In evaluating the effect

  15. Evaluation of ocular refraction in silicone oil temponade eyes by the IOL-Master system%IOL-Master测量硅油填充眼屈光结果分析

    Institute of Scientific and Technical Information of China (English)

    邵珺; 朱弼珺; 樊莹

    2010-01-01

    目的 评价IOL-Master测量硅油填充眼屈光度数的准确性并分析不同因素与术后屈光误差的关系.方法 29例(29眼)硅油填充眼行硅油取出联合人工晶状体(IOL)植入术,术前用IOL-Master进行IOL测量.根据不同病因、硅油放置时间、眼轴、术后并发症等因素进行分类,研究术后视力恢复情况及测量误差产生的原因.结果 术后视力较术前均有不同程度的提高,屈光度数的平均预测误差为0.329±0.846 (-1.5~-2.0D),眼轴长度(P>0.05)、病因 [裂孔源性(t=0.478,P=0.637)、黄斑裂孔(t=0.135,P=0.895)]、是否近视(t=0.435,P=0.667)与术后产生的屈光误差均无相关性,硅油存留时间<1年者术后矫正视力恢复好.结论 硅油填充眼患者采用硅油取出联合IOL植入术对视力有一定提高,IOL-Master测量硅油填充眼IOL度数是相对准确、安全、方便的方式.%Background The combination procedure of the removal of silicon oil and cataract extraction+intraocular lens (IOL) implantation is the main method of treating cataract in silicone oil tamponade eye.However,the conventional measuring method of the IOL power is limiting in eyes with silicone oil tamponade.The IOL-Master system is confirmed to be an ideal non-contact optical measuring instrument in vivo.Objective The aim of this study is to measure the preoperative IOL power,evaluate the accuracy of biometry with the IOL-Master system and compare the relationship between different factors and refractive error.Methods IOL power was measured in 29 silicone oil tamponade eyes of 29 patients prior to the silicone oil removal combining IOL implantation with the IOL-Master system according to different factors such as placement time,axis oculi,complications and so on.The reasons of visual acuity recovery and measurement error were discussed.Results Postoperative visual acuity was improved in all of the patients.The average predictive refractive error was 0.329±0.846 (-1.5--2D

  16. Front Matter.

    Science.gov (United States)

    2016-01-01

    The European Federation for Medical Informatics (EFMI) Association is the leading organisation in medical informatics in Europe as a federation of national societies of 30 countries. EFMI is organized as a non-profit organization concerned with the theory and practice of information science and technology within health and health science in a European context. The objectives of the EFMI are: • To advance international co-operation and dissemination of information in medical informatics at the European level; • To promote high standards in the application of medical informatics; • To promote research and development in medical informatics; • To encourage high standards in education in medical informatics; • To function as the autonomous European Regional Council of IMIA. This year is a special year for EFMI as it celebrates its 40th anniversary; the Federation was founded in 1976. Therefore, different special events have been organized including several conferences, work shops special issues in journals. In view of this special year for EFMI also the Medical Informatics Europe (MIE) conference, one of EFMI's top conferences, is organized in a special way. Considering the complexity and interrelation of the health domain and as a sign of the long-lasting collaboration of major societies in the field a special joint conference was set up that unities the conferences of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), the German Society for Epidemiology (DGEpi), the International Epidemiological Association - European Region and the European Federation for Medical Informatics (EFMI). The societies involved have longstanding experience in integrating the disciplines of medical informatics, biometry, epidemiology and health data management. The collaboration will not only offer a unique opportunity for integration but also strengthen each of the disciplines involved both on a national and international level. The event is

  17. A prospective observational study of early fetal growth velocity and its association with birth weight, gestational age at delivery, preeclampsia, and perinatal mortality

    International Nuclear Information System (INIS)

    Objectives: We aimed to measure early fetal growth velocity and to correlate this with the birth weight, gestational age at delivery, and with the incidence of adverse pregnancy outcomes specifically preeclampsia and perinatal mortality. Methods: A data based prospective observational study, wherein sonographic biometry data and specific pregnancy outcome related data were collected from pregnant women's records, starting soon after their first antenatal visit. Early fetal growth velocity was measured using BPD growth between 11 and 14 weeks scan and anomaly scan and standardizing this by Z scoring. Results: Out of 607 fetuses, 41 (6.7%) were slow growing, 531 (87.4%) normally growing, and 35 (5.7%) fast growing (Z scoring <10th, 10–90th, and >90th percentiles respectively). As fetal growth velocity increased, the mean birth weight decreased from 2958.7 ± 388.9 (<10th centile), 2742.1 ± 576.6 (10–90th centile), to 2339.3 ± 729.4 (>90th centile); and gestational age at delivery decreased from 38.5 ± 1.3 (<10th centile), 37.5 ± 2.1 (10–90th centile), to 36.4 ± 2.2 (>90th centile), and both these trends were statistically significant (p < 0.001).Faster growing fetuses had a higher risk of preterm delivery(spontaneous + indicated) compared to other 2 groups [OR 4.42 (2.18,8.98)], and slower growing fetuses had a higher risk of postdated deliveries compared to other 2 groups [OR 3.042 (1.44, 6.45)].We found no significant association between early fetal growth velocity and incidence of small for gestational age at birth/low birth weight at term, preeclampsia, and perinatal mortality. Conclusions: Early fetal growth velocity between first and second trimesters, may be one of the important factors influencing ultimate birthweight and gestational age at delivery

  18. Measurement of Second-trimester Placental Volume by Ultrasound: Prediction of Fetal Intrauterine Growth%超声测量中孕期胎盘容积预测胎儿发育

    Institute of Scientific and Technical Information of China (English)

    王慧芳; 李慰玑; 黄幼珍; 王新房

    1993-01-01

    本文对中孕期胎盘容积的增长和胎盘循环进行了纵向性监测,发现中孕期胎盘容积增长较快,且有二个加速期,即15~17孕周,19~21孕周.胎盘容积发育不良或胎盘循环功能受损,均能影响胎儿宫内生长发育.中孕期胎盘发育的超声监测对预测胎儿宫内生长发育迟缓有价值,而中孕期胎儿生物学测量对胎儿宫内生长发育迟缓预测价值不大.%Placental volume includes the placental cellular mass and placental circulating blood volume.The development of placental volume was not even during pregnancy.A longitudinal ultrasonic study of placental volume and placental circulation were performed.The results were that placental vol-nme developed rapidly during second-trimester and has two quickened phases at 15~17 weeks and 19 ~21 weeks of gestation respectively.Both abnormal placental volume and placental circulation could in-fluence the fetal growth.The developmentof second-trimester placental volome monitored by ultra-sound Was proved to be valuable in predicting fetal intrauterine growth retardation(IUGR).Fetal biom-etry during second-trimester has little value in predicting IUGR.

  19. Patterns of NPP, GPP, Respiration and NEP During Boreal Forest Succession

    Energy Technology Data Exchange (ETDEWEB)

    Goulden, Michael L.; McMillan, Andrew; Winston, Greg; Rocha, Adrian; Manies, Kristen; Harden, Jennifer W.; Bond-Lamberty, Benjamin

    2010-12-15

    We deployed a mesonet of year-round eddy covariance towers in boreal forest stands that last burned in ~1850, ~1930, 1964, 1981, 1989, 1998, and 2003 to understand how CO2 exchange changes during secondary succession.The strategy of using multiple methods, including biometry and micrometeorology, worked well. In particular, the three independent measures of NEP during succession gave similar results. A stratified and tiered approach to deploying eddy covariance systems that combines many lightweight and portable towers with a few permanent ones is likely to maximize the science return for a fixed investment. The existing conceptual models did a good job of capturing the dominant patterns of NPP, GPP, Respiration and NEP during succession. The initial loss of carbon following disturbance was neither as protracted nor large as predicted. This muted response reflects both the rapid regrowth of vegetation following fire and the prevalence of standing coarse woody debris following the fire, which is thought to decay slowly. In general, the patterns of forest recovery from disturbance should be expected to vary as a function of climate, ecosystem type and disturbance type. The NPP decline at the older stands appears related to increased Rauto rather than decreased GPP. The increase in Rauto in the older stands does not appear to be caused by accelerated maintenance respiration with increased biomass, and more likely involves increased allocation to fine root turnover, root metabolism, alternative forms of respiration, mycorrhizal relationships, or root exudates, possibly associated with progressive nutrient limitation. Several studies have now described a similar pattern of NEP following boreal fire, with 10-to-15 years of modest carbon loss followed by 50-to-100 years of modest carbon gain. This trend has been sufficiently replicated and evaluated using independent techniques that it can be used to quantify the likely effects of changes in boreal fire frequency and

  20. Analyzing noninferiority trials: it is time for advantage deficit assessment – an observational study of published noninferiority trials

    Directory of Open Access Journals (Sweden)

    Gladstone BP

    2015-01-01

    Full Text Available Beryl Primrose Gladstone, Werner Vach Clinical Epidemiology Group, Center for Medical Biometry and Medical Informatics, Medical Center, University of Freiburg, Freiburg, Germany Abstract: The concept of noninferiority (NI trials is based on a belief that the new therapy may potentially offer a benefit for the patient or society in spite of it having a slightly lower efficacy. We introduce advantage deficit assessment (ADA, a simple framework similar to the benefit-risk assessment in superiority trials. ADA balances the advantage gained against the deficit in efficacy on a two-dimensional plane. It requires that NI trials provide quantitative information on both the advantage as well as on efficacy on scales, which can be compared in a meaningful manner. From this perspective, we study the feasibility of ADA among a set of NI trials published in four major medical journals. Among 113 published NI trials, about half assessed and reported at least one claimed advantage. For most other studies, an assessment seems to be feasible if considered in the planning of the study. Many studies claiming noninferiority report a positive gain in advantage. These trials have the potential to demonstrate a significant net benefit in an ADA, substantially changing the final judgment of the study results. ADA seems promising as it overcomes the current limitation of NI trials to demonstrate “only” noninferiority and brings them back to the mainstream of superiority trials by aiming to demonstrate a positive net benefit. ADA seems to be feasible in the majority of NI trials. Keywords: noninferiority, new treatment, potential advantage, advantage deficit assessment, benefit-risk assessment, loss of efficacy

  1. Comparison of Venae Sectio vs. modified Seldinger Technique for Totally Implantable Access Ports; Portas-trial [ISRCTN:52368201

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    Luntz S

    2006-06-01

    Full Text Available Abstract Background The insertion of a Totally Implantable Access Port (TIAP is a routinely employed technique in patients who need a safe and permanent venous access. The number of TIAP implantations is increasing constantly mainly due to advanced treatment options for malignant diseases. Therefore it is important to identify the implantation technique which has the optimal benefit/risk ratio for the patient. Study design A single-centre, randomized, controlled superiority trial to compare two different TIAP implantation techniques. Sample size: 160 patients will be included and randomized intra-operatively. Eligibility criteria: Age equal or older than 18 years, patients scheduled for primary elective implantation of a TIAP in local anaesthesia and a signed informed consent. Primary endpoint: Primary success rate of the randomized technique. Intervention: Venae Sectio in combination with the Seldinger Technique (guide wire and a peel away sheath will be used to place a TIAP. Reference treatment: Conventional Venae Sectio will be used with a direct insertion of the TIAP without guide wire or peel away sheath. Duration of study: Approximately 20 months. Organisation/Responsibility The trial will be conducted in compliance with the protocol and in accordance with the moral, ethical, and scientific principles governing clinical research as set out in the Declaration of Helsinki (1989 and Good Clinical Practice (GCP. The trial will also be carried out in keeping with local and regulatory requirements. The Klinisches Studienzentrum Chirurgie (KSC – Centre of Clinical Trials in Surgery at the Department of Surgery, University Hospital Heidelberg is responsible for planning and conduction of the trial. Documentation of patient's data will be accomplished via electronical Case Report Files (eCRF with MACRO®-Software by the KSC. Randomization, data management, monitoring and biometry are provided by the independent Koordinierungszentrum f

  2. Audit of exracapsular cataract extraction with posterior chamber intraocular lens implantation in a tertiary eye care center in Ethiopia.

    Science.gov (United States)

    Tilahun, Yonas; Sisay, Alemayehu

    2006-01-01

    A retrospective audit of records of 370 eyes of 315 patients for whom extracapsular cataract extraction with posterior chamber intraocular lens implantation (ECCE-PC IOL) was performed between 1998 and 1999 was made to determine postoperative visual outcome and complications. One hundred and ninety three patients were males and one hundred and seventy seven were females making a male to female ratio of 1:0.9. At two months postoperatively 82 (30.4%) of eyes had uncorrected visual acuity of 6/18 or better; while 176 (53.7%) of eyes attained an uncorrected visual acuity between 6/18 and 6/60, and 31 (11.5%) had visual acuity between 3/60 and 6/60. 340 of 358 (94.9%) had a preoperative visual acuity of < 3/60. As a result of the surgery, the percentage of blind eyes dropped from 94.9% to 4.4%. The commonest intra operative and early postoperative complications encountered were posterior capsular tear with vitreous loss (5.7%) and striate keratopathy (11.1%) respectively. Posterior capsular opacity was documented in 17 (4.6%) eyes as a late postoperative complication. Routine biometry, to calculate Intra ocular Lens (IOL) power was not done and this was the major limitation of the study. In conclusion, the study increases awareness of cataract surgery outcomes and provides a feedback to achieve better results both in terms of quality and quantity in cataract surgery. Further study with biometric measurement is recommended. PMID:17447364

  3. Twenty-five years of confirmatory adaptive designs: opportunities and pitfalls.

    Science.gov (United States)

    Bauer, Peter; Bretz, Frank; Dragalin, Vladimir; König, Franz; Wassmer, Gernot

    2016-02-10

    'Multistage testing with adaptive designs' was the title of an article by Peter Bauer that appeared 1989 in the German journal Biometrie und Informatik in Medizin und Biologie. The journal does not exist anymore but the methodology found widespread interest in the scientific community over the past 25 years. The use of such multistage adaptive designs raised many controversial discussions from the beginning on, especially after the publication by Bauer and Köhne 1994 in Biometrics: Broad enthusiasm about potential applications of such designs faced critical positions regarding their statistical efficiency. Despite, or possibly because of, this controversy, the methodology and its areas of applications grew steadily over the years, with significant contributions from statisticians working in academia, industry and agencies around the world. In the meantime, such type of adaptive designs have become the subject of two major regulatory guidance documents in the US and Europe and the field is still evolving. Developments are particularly noteworthy in the most important applications of adaptive designs, including sample size reassessment, treatment selection procedures, and population enrichment designs. In this article, we summarize the developments over the past 25 years from different perspectives. We provide a historical overview of the early days, review the key methodological concepts and summarize regulatory and industry perspectives on such designs. Then, we illustrate the application of adaptive designs with three case studies, including unblinded sample size reassessment, adaptive treatment selection, and adaptive endpoint selection. We also discuss the availability of software for evaluating and performing such designs. We conclude with a critical review of how expectations from the beginning were fulfilled, and - if not - discuss potential reasons why this did not happen. PMID:25778935

  4. A Novel Semiautomated Fractional Limb Volume Tool for Rapid and Reproducible Fetal Soft Tissue Assessment.

    Science.gov (United States)

    Mack, Lauren M; Kim, Sung Yoon; Lee, Sungmin; Sangi-Haghpeykar, Haleh; Lee, Wesley

    2016-07-01

    The purpose of this study was to document the reproducibility and efficiency of a semiautomated image analysis tool that rapidly provides fetal fractional limb volume measurements. Fifty pregnant women underwent 3-dimensional sonographic examinations for fractional arm and thigh volumes at a mean menstrual age of 31.3 weeks. Manual and semiautomated fractional limb volume measurements were calculated, with the semiautomated measurements calculated by novel software (5D Limb Vol; Samsung Medison, Seoul, Korea). The software applies an image transformation method based on the major axis length, minor axis length, and limb center coordinates. A transformed image is used to perform a global optimization technique for determination of an optimal limb soft tissue boundary. Bland-Altman analysis defined bias with 95% limits of agreement (LOA) between methods, and timing differences between manual versus automated methods were compared by a paired t test. Bland-Altman analysis indicated an acceptable bias with 95% LOA between the manual and semiautomated methods: mean arm volume ± SD, 1.7% ± 4.6% (95% LOA, -7.3% to 10.7%); and mean thigh volume, 0.0% ± 3.8% (95% LOA, -7.5% to 7.5%). The computer-assisted software completed measurements about 5 times faster compared to manual tracings. In conclusion, semiautomated fractional limb volume measurements are significantly faster to calculate when compared to a manual procedure. These results are reproducible and are likely to reduce operator dependency. The addition of computer-assisted fractional limb volume to standard biometry may improve the precision of estimated fetal weight by adding a soft tissue component to the weight estimation process. PMID:27269002

  5. Automated Retinal Layer Segmentation Using Spectral Domain Optical Coherence Tomography: Evaluation of Inter-Session Repeatability and Agreement between Devices.

    Science.gov (United States)

    Terry, Louise; Cassels, Nicola; Lu, Kelly; Acton, Jennifer H; Margrain, Tom H; North, Rachel V; Fergusson, James; White, Nick; Wood, Ashley

    2016-01-01

    Retinal and intra-retinal layer thicknesses are routinely generated from optical coherence tomography (OCT) images, but on-board software capabilities and image scaling assumptions are not consistent across devices. This study evaluates the device-independent Iowa Reference Algorithms (Iowa Institute for Biomedical Imaging) for automated intra-retinal layer segmentation and image scaling for three OCT systems. Healthy participants (n = 25) underwent macular volume scans using a Cirrus HD-OCT (Zeiss), 3D-OCT 1000 (Topcon), and a non-commercial long-wavelength (1040nm) OCT on two occasions. Mean thickness of 10 intra-retinal layers was measured in three ETDRS subfields (fovea, inner ring and outer ring) using the Iowa Reference Algorithms. Where available, total retinal thicknesses were measured using on-board software. Measured axial eye length (AEL)-dependent scaling was used throughout, with a comparison made to the system-specific fixed-AEL scaling. Inter-session repeatability and agreement between OCT systems and segmentation methods was assessed. Inter-session coefficient of repeatability (CoR) for the foveal subfield total retinal thickness was 3.43μm, 4.76μm, and 5.98μm for the Zeiss, Topcon, and long-wavelength images respectively. For the commercial software, CoR was 4.63μm (Zeiss) and 7.63μm (Topcon). The Iowa Reference Algorithms demonstrated higher repeatability than the on-board software and, in addition, reliably segmented all 10 intra-retinal layers. With fixed-AEL scaling, the algorithm produced significantly different thickness values for the three OCT devices (Pimaged with these devices, however ocular biometry is required for accurate quantification of OCT images. PMID:27588683

  6. A Novel Semiautomated Fractional Limb Volume Tool for Rapid and Reproducible Fetal Soft Tissue Assessment.

    Science.gov (United States)

    Mack, Lauren M; Kim, Sung Yoon; Lee, Sungmin; Sangi-Haghpeykar, Haleh; Lee, Wesley

    2016-07-01

    The purpose of this study was to document the reproducibility and efficiency of a semiautomated image analysis tool that rapidly provides fetal fractional limb volume measurements. Fifty pregnant women underwent 3-dimensional sonographic examinations for fractional arm and thigh volumes at a mean menstrual age of 31.3 weeks. Manual and semiautomated fractional limb volume measurements were calculated, with the semiautomated measurements calculated by novel software (5D Limb Vol; Samsung Medison, Seoul, Korea). The software applies an image transformation method based on the major axis length, minor axis length, and limb center coordinates. A transformed image is used to perform a global optimization technique for determination of an optimal limb soft tissue boundary. Bland-Altman analysis defined bias with 95% limits of agreement (LOA) between methods, and timing differences between manual versus automated methods were compared by a paired t test. Bland-Altman analysis indicated an acceptable bias with 95% LOA between the manual and semiautomated methods: mean arm volume ± SD, 1.7% ± 4.6% (95% LOA, -7.3% to 10.7%); and mean thigh volume, 0.0% ± 3.8% (95% LOA, -7.5% to 7.5%). The computer-assisted software completed measurements about 5 times faster compared to manual tracings. In conclusion, semiautomated fractional limb volume measurements are significantly faster to calculate when compared to a manual procedure. These results are reproducible and are likely to reduce operator dependency. The addition of computer-assisted fractional limb volume to standard biometry may improve the precision of estimated fetal weight by adding a soft tissue component to the weight estimation process.

  7. Seed and Germination Characteristics of 20 Amazonian Liana Species

    Directory of Open Access Journals (Sweden)

    Mareike Roeder

    2013-01-01

    Full Text Available Lianas are an important component of tropical forests, and may reach their highest densities in disturbed areas. However, information on seed and germination characteristics is scarce. Twenty Amazon liana species were screened for their germination characteristics, including light dependence, tolerance of desiccation and of alternating temperatures; these characteristics are considered important for the germination success in areas with relatively open canopies. Between 31–1,420 seeds per species were available, as 15 species seeds came from one mother plant. We studied seed biometry and conducted germination trials with fresh seeds (12 h light daily, or dark and desiccated seeds at 25 °C. Germination at alternating temperatures (20/30 °C, 15/35 °C was analyzed for nine species. Of the 20 species, eight species with the largest seeds had desiccation sensitive seeds; this is the first record for species of four genera and one family, where only desiccation tolerant seeds are otherwise recorded. Light-dependent germination was found in three species (0.01–0.015 g and is the first record for two; however, results were based on seeds from one plant per species. Alternating temperatures of 15/35 °C decreased final germination of four out of nine species, and response to 20/30 °C cycles varied compared to constant 25 °C. Seed and germination characteristics of the species ranged from pioneer to climax traits indicating that establishment of lianas from seeds may be confined to species specific niches.

  8. Growth pattern differences of captive born Antillean manatee (Trichechus manatus) calves and those rescued in the Brazilian northeastern coast.

    Science.gov (United States)

    Borges, João Carlos Gomes; Freire, Augusto Carlos da Bôaviagem; Attademo, Fernanda Loffler Niemeyer; Serrano, Inês de Lima; Anzolin, Daiane Garcia; de Carvalho, Paulo Sérgio Martins; Vergara-Parente, Jociery Einhardt

    2012-09-01

    The aim of this work was to analyze whether there are differences between the development pattern of Antillean manatee (Trichechus manatus) calves born in captivity and those rescued and kept under rehabilitation. Biometrics data were collected from 1990 to 2010 from 38 calves, 29 of which still had the remnants of the umbilical cord and had been rescued from the Brazilian northeastern coastline (Group I), and nine individuals that were born in captivity and remained with their mothers (Group II). Among the measures obtained through biometry, the total length and weight of the animal were recorded. Given that the breastfeeding of calves occurs approximately until the age of 2 yr, data obtained until the 24th month of life of each individual were evaluated. An average increase in weight of 53.50 +/- 38.54 kg (mean +/- standard deviation [SD]) was detected in Group I and a gain of 106.87 +/- 47.21 kg (mean +/- SD) in Group II. From months 13 to 24, no significant difference in the weight increment was observed. A similar pattern occurred with regard to the increase in the overall length during the first year, where animals from Group I grew 34.81 +/- 17.94 cm (mean +/- SD) and from Group II grew 83.83 +/- 28.21 cm, a statistically significant difference. The growth was not significantly different from 13 to 24 mo. The results found in this study identified the need for a review of the nutritional diet offered to orphaned calves rescued and kept in captivity. The results also support the need for a better adequacy of facilities for these animals as a way to encourage the management strategies adopted for manatee calves maintained in captivity.

  9. New trends in intraocular lens imaging

    Science.gov (United States)

    Millán, María S.; Alba-Bueno, Francisco; Vega, Fidel

    2011-08-01

    As a result of modern technological advances, cataract surgery can be seen as not only a rehabilitative operation, but a customized procedure to compensate for important sources of image degradation in the visual system of a patient, such as defocus and some aberrations. With the development of new materials, instruments and surgical techniques in ophthalmology, great progress has been achieved in the imaging capability of a pseudophakic eye implanted with an intraocular lens (IOL). From the very beginning, optical design has played an essential role in this progress. New IOL designs need, on the one hand, theoretical eye models able to predict optical imaging performance and on the other hand, testing methods, verification through in vitro and in vivo measurements, and clinical validation. The implant of an IOL requires a precise biometry of the eye, a prior calculation from physiological data, and an accurate position inside the eye. Otherwise, the effects of IOL calculation errors or misplacements degrade the image very quickly. The incorporation of wavefront aberrometry into clinical ophthalmology practice has motivated new designs of IOLs to compensate for high order aberrations in some extent. Thus, for instance, IOLs with an aspheric design have the potential to improve optical performance and contrast sensitivity by reducing the positive spherical aberration of human cornea. Monofocal IOLs cause a complete loss of accommodation that requires further correction for either distance or near vision. Multifocal IOLs address this limitation using the principle of simultaneous vision. Some multifocal IOLs include a diffractive zone that covers the aperture in part or totally. Reduced image contrast and undesired visual phenomena, such as halos and glare, have been associated to the performance of multifocal IOLs. Based on a different principle, accommodating IOLs rely on the effort of the ciliary body to increase the effective power of the optical system of the

  10. Orbit as a Mirror of Systemic Disease; '' Epidemiologic, Clinical and Imaging ''

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    Aliakbar Ameri

    2009-01-01

    Full Text Available   "n1- Infectious: toxoplasmosis , toxocariasis ,TB , syphilis , leprosy , HIV , CMV. "n2- Non infectous: endocrine, diabetes, thyroid, connective tissue disease ''RA, SLE, wegeners, PAN, systemic sclerosis'', vasculitides, GCA'', sarcoidosis, behcet's disease, vogt koyangi harada syndrome, phakomatoses. "nAll diseases should be demonstrated by clinical images and imaging slides. "n-imaging "nX-RAY, high frequency US and color doppler, 2D and 3D X-RAY CT, MRI: "n1- X-RAY: in fractures, foreign bodies, skull combined anomalies and few other cases. "n2-High-frequency ultrasound for posterior chamber and ciliary body micro-anatomic changes '' tumors granulations''. "nColor Doppler study for vascular lesions, central retin artery, tumors in the globe and retrobulbar region. "n3- X-RAY CT for tumors, 2D and 3D for fractures, 3D for bone anatomy, foreign body '' modality of choice is 2directional 2D CT scan '', sino-nasal diseases, CT-angiography or phlebography in large vessel evaluation, DSA for small vessel anatomy. "n4- MRI for tumors and infection also granulation process. "nMRI and MRV in large vessel anatomy, functional – MRI for the visual pathway, tractography. "nConclusion : "nModality of choice : "n1- CT for foreign bodies '' MRI is contra-indicated in the first step specially in metallic fragments ''. CT for micro-calcification '' retinoblastoma '',CT for fractures. "n2- MRI for tumors, biometry, soft tissue disease and functional imaging. "n3- DSA for vascular disease of the eye. "n4- U.S for biometery, posterior Chamber, iris and ciliary body lesions. 5- Fluorescein angiography for the retina.  

  11. Can the anterior-posterior thigh diameter be used as an indicator for fetal age using two-dimensional sonography?

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    This study evaluated the usefulness and direct correlation of a simple new method of predicting fetal age by measurement of the anterior-posterior thigh diameter (APTD) in a normal 18 to 28 week pregnancies using two-dimensional sonography. Little published research exists in the area of fetal thigh biometry, specifically in the use of the anterior-posterior fetal thigh diameter (APTD). The only study I found was that of fetal thigh circumference. Continuing review of existing practices needs to be coupled with evaluation of alternate or additional methodology. Materials and methods: This was a quantitative prospective study of 55 patients in High Level General Hospital, Alberta, Canada. Anterior-posterior thigh diameters (APTD) were sonographically measured. The normal range for each week of pregnancy was determined five times for reliability. Results: Significant correlation was found between (APTD) and fetal age from simple line regression analysis, with 99.993% confidence intervals at each week from 18 to 28 weeks gestation. There was a correlation of 1 mm APTD per 1 week of fetal age. In addition R > 0.93, P < 0.001. The residual scatter plots confirmed the APTD validity. Conclusion: APTD is a reliable and valid method for assessing fetal age in a normal pregnancy and may be particularly useful when other parameters are unable to accurately predict fetal age. An accurate linear measurement of multiple fetal parameters allows a more complete profile of fetal growth and estimated date of delivery (EDD). APTD may also be useful in identifying fetal growth problems. All of the values of fetal age lie directly on the 'best-fit' regression line. Since the coefficient of determination (Rsq) is very high, this model is very effective

  12. Relationships among frozen-thawed semen fertility, physical parameters, certain routine sperm characteristics and testosterone in breeding Murrah buffalo (Bubalus bubalis bulls

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    A. K. Singh

    2014-09-01

    Full Text Available Aim: The present study was carried out to examine the relationships among frozen-thawed semen fertility, physical parameters, seminal quality, and testosterone concentration in Murrah buffalo bulls. Materials and Methods: A total of 30 breeding Murrah buffalo bulls (either progeny tested or under progeny testing program were randomly selected from two government bull farms in Punjab. None of the bulls selected for this study had any preceding physical abnormality. A field fertility trial was conducted to determine the first service conception rate (FSCR. The number of females inseminated per bull semen was 10. All the bulls were inspected for structural soundness, measurement of scrotal circumference, testicular biometry, and internal pelvic area (IPA. Frozen-thawed semen was evaluated for total motility, progressive motility, viability, concentration, abnormality, and hypo-osmotic swelling test (HOST. Testosterone was estimated in blood plasma, seminal plasma as well as frozen-thawed semen extracts for establishing relationship. Results: The FSCR was 48% in the bulls having a scrotal circumference of ≥44 cm, although, there was no significant correlation between FSCR and scrotal circumference. Similarly, no consistent relationship existed between sperm concentration and scrotal circumference. A positive correlation was observed between IPA and FSCR (r=0.294. Of the six post-thaw seminal components (total motility, progressive motility, viability, HOST (%, total abnormality and concentration only total motility had a high significant (p<0.01 correlation with FSCR (r=0.694. Varied correlations existed between other seminal parameters and fertility. Using a simple regression analysis, the post-thaw motility, IPA, prepuce length and testosterone (independent variables combined to explain approximately 62% of the variation in the FSCR (dependent variable. Conclusion: The present study indicated that despite low to high correlations between seminal

  13. Fetal size in the second trimester is associated with the duration of pregnancy, small fetuses having longer pregnancies

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    Rasmussen Svein

    2008-07-01

    Full Text Available Abstract Background Conventionally, the pregnancy duration is accepted to be 280–282 days. Fetuses determined by ultrasound biometry to be small in early pregnancy, have an increased risk of premature birth. We speculate that the higher rate of preterm delivery in such small fetuses represents a pathological outcome not applicable to physiological pregnancies. Here we test the hypothesis that in low-risk pregnancies fetal growth (expressed by fetal size in the second trimester is itself a determinant for pregnancy duration with the slower growing fetuses having a longer pregnancy. Methods We analysed duration of gestation data for 541 women who had a spontaneous delivery having previously been recruited to a cross-sectional study of 650 low-risk pregnancies. All had a regular menses and a known date of their last menstrual period (LMP. Subjects were examined using ultrasound to determine fetal head circumference (HC, abdominal circumference (AC and femur length (FL at 10–24 weeks of gestation. Length of the pregnancy was calculated from LMP, and birth weights were noted. The effect of fetal size at 10–24 weeks of gestation on pregnancy duration was assessed also when adjusting for the difference between LMP and ultrasound based fetal age. Results Small fetuses (z-score -2.5 at second trimester ultrasound scan had lower birth weights (p Conclusion Fetal size in the second trimester is a determinant of birth weight and pregnancy duration, small fetuses having lower birth weights and longer pregnancies (up to 13 days compared with large fetuses. Our results support a concept of individually assigned pregnancy duration according to growth rates rather than imposing a standard of 280–282 days on all pregnancies.

  14. Determination of morphological, biometric and biochemical susceptibilities in healthy Eurasier dogs with suspected inherited glaucoma.

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    Thomas Boillot

    Full Text Available In both humans and dogs, the primary risk factor for glaucoma is high intraocular pressure (IOP, which may be caused by iridocorneal angle (ICA abnormalities. Oxidative stress has also been implicated in retinal ganglion cell damage associated with glaucoma. A suspected inherited form of glaucoma was recently identified in Eurasier dogs (EDs, a breed for which pedigrees are readily available. Because of difficulties in assessing ICA morphology in dogs with advanced glaucoma, we selected a cohort of apparently healthy dogsfor the investigation of ICA morphological status, IOP and plasma concentrations of oxidative stress biomarkers. We aimed to establish correlations between these factors, to identify predictive markers of glaucoma in this dog breed. A cohort of 28 subjects, volunteered for inclusion by their owners, was selected by veterinary surgeons. These dogs were assigned to four groups: young males, young females (1-3 years old, adult males and adult females (4-8 years old. Ocular examination included ophthalmoscopy, tonometry, gonioscopy, biometry and ultrasound biomicroscopy (UBM, and the evaluation of oxidative stress biomarkers consisting of measurements of plasma glutathione peroxidase (GP activity and taurine and metabolic precursor (methionine and cysteine concentrations in plasma. The prevalence of pectinate ligament abnormalities was significantly higher in adult EDs than in young dogs. Moreover, in adult females, high IOP was significantly correlated with a short axial globe length, and a particularly large distance between Schwalbe's line and the anterior lens capsule. GP activity levels were significantly lower in EDs than in a randomized control group of dogs, and plasma taurine concentrations were higher. Hence, ICA abnormalities were associated with weaker antioxidant defenses in EDs, potentially counteracted by higher plasma taurine concentrations. This study suggests that EDs may constitute an appropriate canine model for

  15. Protocol of an expertise based randomized trial comparing surgical Venae Sectio versus radiological Puncture of Vena Subclavia for insertion of Totally Implantable Access Port in oncological patients

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    Radeleff Boris

    2008-10-01

    Full Text Available Abstract Background Totally Implantable Access Ports (TIAP are being extensively used world-wide and can be expected to gain further importance with the introduction of new neoadjuvant and adjuvant treatments in oncology. Two different techniques for the implantation can be selected: A direct puncture of a central vein and the utilization of a Seldinger device or the surgical Venae sectio. It is still unclear which technique has the optimal benefit/risk ratio for the patient. Design A single-center, expertise based randomized, controlled superiority trial to compare two different TIAP implantation techniques. 100 patients will be included and randomized pre-operatively. All patients aged 18 years or older scheduled for primary elective implantation of a TIAP under local anesthesia who signed the informed consent will be included. The primary endpoint is the primary success rate of the randomized technique. Control Intervention: Venae Sectio will be employed to insert a TIAP by a surgeon; Experimental intervention: Punction of V. Subclavia will be used to place a TIAP by a radiologist. Duration of study: Approximately 10 months, follow up time: 90 days. Organisation/Responsibility The PORTAS 2 – Trial will be conducted in accordance with the protocol and in compliance with the moral, ethical, and scientific principles governing clinical research as set out in the Declaration of Helsinki (1989 and Good Clinical Practice (GCP. The Center of Clinical Trials at the Department of Surgery, University Hospital Heidelberg is responsible for design and conduct of the trial including randomization and documentation of patients' data. Data management and statistical analysis will be performed by the independent Institute for Medical Biometry and Informatics (IMBI, University of Heidelberg. Trial Registration The trial is registered at ClinicalTrials.gov (NCT00600444.

  16. COMPARISON OF ANTERIOR CHAMBER REACTION WITH SINGLE-PIECE AND THREE-PIECE INTRAOCULAR LENSES IN MANUAL SMALL INCISION CATARACT SURGERY

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    Usha

    2014-11-01

    Full Text Available OBJECTIVES: To study the anterior chamber reaction between single-piece and three-piece intraocular lenses in manual small incision cataract surgery. METHODS: Prospective study done at Mysore Race Club Charitable Eye Hospital. 140 Patients underwent suture less sclerocorneal tunnel cataract surgeries with single-piece or three-piece Polymethylmethacrylate (PMMA intra ocular lenses (3-piece IOL. Accurate Keratometry was done with the help of Bausch and Lomb Keratometer. IOL power was calculated by using SRK (Sanders-Retzlaff-Kraff II formula, with the help of non-immersion, contact type of A-Scan biometry. Single-piece IOLs were inserted in 70 patients. Three-piece IOL inserted in rest of 70 patients. Slit lamp examination for anterior chamber cells was graded according to Hogan system. Aqueous cells were measured by counting within the visible field under Slit lamp, keeping the beam at maximum intensity. Anterior chamber reaction (AC in 1stPostoperative week and at 8 weeks are compared and analyzed by ANOVA statistics. RESULTS: Single piece IOL group had anterior chamber reaction ranging from 1 to 2+ cells i.e., in 97%. In three-piece IOL group, 70%of eyes had 2+ cells and 12.8% had 3± cells. At 8 weeks, single- piece IOL showed either no cells or occasional cells in 98.6% of patients, compared to three –piece IOL group showing in 77%of cases. 23% had 1+ cells in later group. CONCLUSION: Single-piece implanted IOLs had significant less number of cells were seen in anterior chamber from 1 week to 8 weeks as compared to three-piece IOLs.

  17. A prospective observational study of early fetal growth velocity and its association with birth weight, gestational age at delivery, preeclampsia, and perinatal mortality

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    Vasudeva, Akhila, E-mail: akhilavasudeva@gmail.com [Department of Obstetrics and Gynaecology, Kasturba Medical College, Manipal University, Manipal 576104, Karnataka State (India); Abraham, Anu Annie, E-mail: anuannieabraham@yahoo.com [Department of Obstetrics and Gynaecology, Kasturba Medical College, Manipal University, Manipal 576104, Karnataka State (India); Kamath, Asha, E-mail: aashakamat@gmail.com [Department of Community Medicine, Kasturba Medical College, Manipal, A Constituent College of Manipal University (India)

    2013-08-15

    Objectives: We aimed to measure early fetal growth velocity and to correlate this with the birth weight, gestational age at delivery, and with the incidence of adverse pregnancy outcomes specifically preeclampsia and perinatal mortality. Methods: A data based prospective observational study, wherein sonographic biometry data and specific pregnancy outcome related data were collected from pregnant women's records, starting soon after their first antenatal visit. Early fetal growth velocity was measured using BPD growth between 11 and 14 weeks scan and anomaly scan and standardizing this by Z scoring. Results: Out of 607 fetuses, 41 (6.7%) were slow growing, 531 (87.4%) normally growing, and 35 (5.7%) fast growing (Z scoring <10th{sup ,} 10–90th, and >90th percentiles respectively). As fetal growth velocity increased, the mean birth weight decreased from 2958.7 ± 388.9 (<10th centile), 2742.1 ± 576.6 (10–90th centile), to 2339.3 ± 729.4 (>90th centile); and gestational age at delivery decreased from 38.5 ± 1.3 (<10th centile), 37.5 ± 2.1 (10–90th centile), to 36.4 ± 2.2 (>90th centile), and both these trends were statistically significant (p < 0.001).Faster growing fetuses had a higher risk of preterm delivery(spontaneous + indicated) compared to other 2 groups [OR 4.42 (2.18,8.98)], and slower growing fetuses had a higher risk of postdated deliveries compared to other 2 groups [OR 3.042 (1.44, 6.45)].We found no significant association between early fetal growth velocity and incidence of small for gestational age at birth/low birth weight at term, preeclampsia, and perinatal mortality. Conclusions: Early fetal growth velocity between first and second trimesters, may be one of the important factors influencing ultimate birthweight and gestational age at delivery.

  18. Cataract and progressing keratoconus — solution?

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    K. B. Pershin

    2015-01-01

    Full Text Available Purpose: To develop an uniform method of the treatment for patients with progressive keratoconus (stage 1‑2 and cataract. Patients and methods: 4 patients (5 eyes with cataract and progressive keratoconus stage 1‑2 were enrolled in the study. Mean age was 42 years. In all patients, standard ophthalmic examination as well corneal topography, anterior segment optical coherence tomography, biometry, and IOL power calculations using IOLMaster were performed. Mean uncorrected visual acuity (UCVA was 0.1 while mean best-corrected visual acuity (BCVA was 0.4. Surgical technique included two steps. The first step was the creation of corneal tunnels with femtosecond laser with subsequent phaco and monofocal aspheric IOL implantation. The second step (1‑2 weeks later was the implantation of intrastromal ring segments based on corneal topography and corneal crosslinking.Results: After the first step, all patients had myopic refraction (from –1.0 D to –2.5 D. Cylindrical component was almost unchanged. After the second step, the patients reported the vision improvement, mainly due to UCVA. Both spherical (myopic and cylindrical components decreased, mainly due to the steep meridian. After the treatment, optical power of the cornea decreased, mainly due to the steep meridian. UCVA was 0.6 or more in 60 % of cases, final BCVA was 0.8‑1.0 in 80 % of cases. Neither intraoperative nor postoperative (follow-up was 2 years complications were observed.Conclusions: Combined phaco and prior creation of corneal tunnels with subsequent intrastromal ring segment implantation and crosslinking in patients with cataract and progressive keratoconus stage 1‑2 is safe, provides good predictable outcome and significantly reduces rehabilitation period.

  19. Pediatric cataract: challenges and future directions

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    Medsinge A

    2015-01-01

    Full Text Available Anagha Medsinge,1,2 Ken K Nischal1,2 1Pediatric Ophthalmology, Strabismus, and Adult Motility, Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, (UPMC 2University of Pittsburgh School of Medicine, Pittsburgh, PA, USA Abstract: Cataract is a significant cause of visual disability in the pediatric population worldwide and can significantly impact the neurobiological development of a child. Early diagnosis and prompt surgical intervention is critical to prevent irreversible amblyopia. Thorough ocular evaluation, including the onset, duration, and morphology of a cataract, is essential to determine the timing for surgical intervention. Detailed assessment of the general health of the child, preferably in conjunction with a pediatrician, is helpful to rule out any associated systemic condition. Although pediatric cataracts have a diverse etiology, with the majority being idiopathic, genetic counseling and molecular testing should be undertaken with the help of a genetic counselor and/or geneticist in cases of hereditary cataracts. Advancement in surgical techniques and methods of optical rehabilitation has substantially improved the functional and anatomic outcomes of pediatric cataract surgeries in recent years. However, the phenomenon of refractive growth and the process of emmetropization have continued to puzzle pediatric ophthalmologists and highlight the need for future prospective studies. Posterior capsule opacification and secondary glaucoma are still the major postoperative complications necessitating long-term surveillance in children undergoing cataract surgery early in life. Successful management of pediatric cataracts depends on individualized care and experienced teamwork. We reviewed the etiology, preoperative evaluation including biometry, choice of intraocular lens, surgical techniques, and recent developments in the field of childhood cataract. Keywords: children, pediatric cataract, infantile

  20. Morphometrical development of tambaqui (Colossoma macropomum, Cuvier, 1818 under different photoperiods

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    Pedro Pierro Mendonça

    2012-06-01

    Full Text Available The experiment was performed with 160 tambaqui (Colossoma macropomum with average weight 11.01±2.08 g and total length 7.8±0.18 cm. Fishes were kept in sixteen aquariums with 56 L of water at 29.1±0.4 ºC of temperature, initial stocking density 1.97 g/L and constant aeration. The objective of this study was to assess the influence of photoperiod on fish performance. Treatments consisted of four photoperiods: T1 = 6 hours; T2 = 12 hours; T3 = 18 hours and T4 = 24 hours, with four replicates each. Fishes were fed twice a day with commercial extruded feed (28% of crude protein. The experiment was developed in closed circulation system, with volume of water renewal for each experimental unit equivalent to 40 times daily. Fish biometry was performed at the beginning of the experiment and at every 16 days, in order to follow the effects of treatments on juvenile development. Final weight, total length, standard length, height, feed intake, weight gain, feed conversion, survival, specific growth rate, protein efficiency rate and protein retention efficiency were assessed. Statistical analysis of variables was performed with application of the software SAEG version 9.1, for analysis of variance, regression analysis and Pearson correlation. Positive influence of photoperiod was observed for the studied variables in this study. The studied variables enhanced as the photoperiod increased, mainly between 15 and 22 hours. The photoperiod has significant influence upon growth traits of tambaqui (Colossoma macropomum.

  1. The effect of water availability on stand-level productivity, transpiration, water use efficiency and radiation use efficiency of field-grown willow clones

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    Linderson, Maj-Lena [Lund University, Lund (Sweden). Geobiosphere Science Centre, Department of Physical Geography and Ecosystems Analysis; Technical University of Denmark, Roskilde (Denmark). Risoe National Laboratory, Bio Systems Department; Iritz, Zinaida [Swedish International Development Cooperation Agency, Stockholm (Sweden); Lindroth, Anders [Lund University, Lund (Sweden). Geobiosphere Science Centre, Department of Physical Geography and Ecosystems Analysis

    2007-07-15

    The effect of water availability on stand-level productivity, transpiration, water use efficiency (WUE) and radiation use efficiency (RUE) is evaluated for different willow clones at stand level. The measurements were made during the growing season 2000 in a 3-year-old plantation in Scania, southernmost Sweden. Six willow clones were included in the study: L78183, SW Rapp, SW Jorunn, SW Jorr, SW Tora and SW Loden. All clones were exposed to two water treatments: rain-fed, non-irrigated treatment and reduced water availability by reduced soil water recharge. Field measurements of stem sap-flow and biometry are up-scaled to stand transpiration and stand dry substance production and used to assess WUE. RUE is estimated from the ratio between the stand dry substance production and the accumulated absorbed photosynthetic active radiation over the growing season. The total stand transpiration rate for the 5 months lies between 100 and 325 mm, which is fairly low compared to the Penman-Monteith transpiration for willow, reaching 400-450 mm for the same period. Mean WUE of all clones and treatments is 5.3 g/kg, which is high compared to earlier studies, while average RUE is 0.31 g/mol, which is slightly low compared to other results. Generally, all clones, except for Jorunn, seem to be better off concerning biomass production, WUE and RUE than the reference clone. Jorr, Jorunn and Loden also seem to be able to cope with the reduced water availability with increase in the water use efficiency. Tora performs significantly better than the other clones concerning both growth and efficiency in light and water use, but the effect of the dry treatment on stem growth shows sensitivity to water availability. The reduced stem growth could be due to a change in allocation patterns. (author)

  2. Growth pattern differences of captive born Antillean manatee (Trichechus manatus) calves and those rescued in the Brazilian northeastern coast.

    Science.gov (United States)

    Borges, João Carlos Gomes; Freire, Augusto Carlos da Bôaviagem; Attademo, Fernanda Loffler Niemeyer; Serrano, Inês de Lima; Anzolin, Daiane Garcia; de Carvalho, Paulo Sérgio Martins; Vergara-Parente, Jociery Einhardt

    2012-09-01

    The aim of this work was to analyze whether there are differences between the development pattern of Antillean manatee (Trichechus manatus) calves born in captivity and those rescued and kept under rehabilitation. Biometrics data were collected from 1990 to 2010 from 38 calves, 29 of which still had the remnants of the umbilical cord and had been rescued from the Brazilian northeastern coastline (Group I), and nine individuals that were born in captivity and remained with their mothers (Group II). Among the measures obtained through biometry, the total length and weight of the animal were recorded. Given that the breastfeeding of calves occurs approximately until the age of 2 yr, data obtained until the 24th month of life of each individual were evaluated. An average increase in weight of 53.50 +/- 38.54 kg (mean +/- standard deviation [SD]) was detected in Group I and a gain of 106.87 +/- 47.21 kg (mean +/- SD) in Group II. From months 13 to 24, no significant difference in the weight increment was observed. A similar pattern occurred with regard to the increase in the overall length during the first year, where animals from Group I grew 34.81 +/- 17.94 cm (mean +/- SD) and from Group II grew 83.83 +/- 28.21 cm, a statistically significant difference. The growth was not significantly different from 13 to 24 mo. The results found in this study identified the need for a review of the nutritional diet offered to orphaned calves rescued and kept in captivity. The results also support the need for a better adequacy of facilities for these animals as a way to encourage the management strategies adopted for manatee calves maintained in captivity. PMID:23082512

  3. Marine diatoms sustain growth of bivalves in a Mediterranean lagoon

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    Pernet, Fabrice; Malet, Nathalie; Pastoureaud, Annie; Vaquer, André; Quéré, Claudie; Dubroca, Laurent

    2012-02-01

    Carbon stable isotopes and fatty acids were measured in the suspended particulate organic matter (POM) of the Thau lagoon to study its qualitative temporal changes in relation to environmental factors and to identify the food sources of bivalves over a one-yr-cycle in relation to their growth. Reciprocally, the impact of shellfish farming on POM was also studied. Oysters and mussels were sampled and measured for biometry, stable isotopes and fatty acid composition. Water samples were collected at two sites, both inside and outside of the shellfish farming area, to determine concentrations in POM, chlorophyll a (Chl a) and stable isotopes. Carbon isotopes and fatty acids in bivalves reflected seasonal changes in food sources, which varied consistently with the environment. Seasonal changes in δ13C and fatty acids in the bivalves suggested that dietary phytoplankton contribution varied according to season. Terrestrial organic matter and bacteria can contribute to the diet of bivalves during non-bloom periods. Mussels seemed to rely more on diatoms and less on terrestrial organic matter and bacteria than oysters did, particularly when phytoplankton biomass was low during the summer. Although one- and two-yr-old oysters showed similar δ13C, their fatty acid dynamics differed slightly. Periods of high growth rate in bivalves were mainly fuelled by diatoms, thus highlighting the importance of seasonal blooms of microphytoplankton during the critical period of bivalve growth and gamete production. Although there was no significant effect of shellfish farms on Chl a and POM δ13C, consistent differences indicate that stable isotopes could be used successfully to investigate the effects of bivalve aquaculture.

  4. Latest Early Pleistocene remains of Lynx pardinus (Carnivora, Felidae) from the Iberian Peninsula: Taxonomy and evolutionary implications

    Science.gov (United States)

    Boscaini, Alberto; Alba, David M.; Beltrán, Juan F.; Moyà-Solà, Salvador; Madurell-Malapeira, Joan

    2016-07-01

    The Iberian lynx (Lynx pardinus) is a critically endangered felid that, during the last fifty years, has been subject to an intensive conservation program in an attempt to save it from extinction. This species is first recorded at ca. 1.7-1.6 Ma (late Villafranchian, late Early Pleistocene) in NE Iberian Peninsula, roughly coinciding with the large faunal turnover that occurred around the middle to late Villafranchian boundary. Here we describe the largest collection of L. pardinus remains available to date from the Iberian late Early Pleistocene (Epivillafranchian), including localities from the Vallparadís Section (Vallès-Penedès Basin, NE Iberian Peninsula) and Cueva Victoria (Cartagena, SE Iberian Peninsula). The morphology and biometry of the studied material attests to the widespread occurrence of L. pardinus in the Mediterranean coast of the Iberian Peninsula since the latest Early Pleistocene, i.e., about 0.5 million years earlier than it was generally accepted (i.e., at the beginning of the Middle Pleistocene). Based on the features observed in the large sample studied in this paper, we conclude that Lynx spelaeus is a junior synonym of L. pardinus and further propose to assign all the Epivillafranchian and younger fossil lynxes from SW Europe to the extant species L. pardinus. Due to the arrival of the Eurasian lynx (Lynx lynx) into Europe at the beginning of the Late Pleistocene, the attribution of specimens younger than MIS 5e to either this species or L. pardinus solely on morphological grounds has proven equivocal. Here we discuss the main diagnostic features of both species of European lynxes and further review their evolutionary history and paleobiogeography throughout the Pleistocene.

  5. Objective 3D face recognition: Evolution, approaches and challenges.

    Science.gov (United States)

    Smeets, Dirk; Claes, Peter; Vandermeulen, Dirk; Clement, John Gerald

    2010-09-10

    Face recognition is a natural human ability and a widely accepted identification and authentication method. In modern legal settings, a lot of credence is placed on identifications made by eyewitnesses. Consequently these are based on human perception which is often flawed and can lead to situations where identity is disputed. Therefore, there is a clear need to secure identifications in an objective way based on anthropometric measures. Anthropometry has existed for many years and has evolved with each advent of new technology and computing power. As a result of this, face recognition methodology has shifted from a purely 2D image-based approach to the use of 3D facial shape. However, one of the main challenges still remaining is the non-rigid structure of the face, which can change permanently over varying time-scales and briefly with facial expressions. The majority of face recognition methods have been developed by scientists with a very technical background such as biometry, pattern recognition and computer vision. This article strives to bridge the gap between these communities and the forensic science end-users. A concise review of face recognition using 3D shape is given. Methods using 3D shape applied to data embodying facial expressions are tabulated for reference. From this list a categorization of different strategies to deal with expressions is presented. The underlying concepts and practical issues relating to the application of each strategy are given, without going into technical details. The discussion clearly articulates the justification to establish archival, reference databases to compare and evaluate different strategies.

  6. Retreatments after multifocal intraocular lens implantation: an analysis

    Science.gov (United States)

    Gundersen, Kjell Gunnar; Makari, Sarah; Ostenstad, Steffen; Potvin, Rick

    2016-01-01

    Purpose To determine the incidence and etiology of required retreatment after multifocal intraocular lens (IOL) implantation and to evaluate the methods and clinical outcomes of retreatment. Patients and methods A retrospective chart review of 416 eyes of 209 patients from one site that underwent uncomplicated cataract surgery with multifocal IOL implantation. Biometry, the IOL, and refractive data were recorded after the original implantation, with the same data recorded after retreatment. Comments related to vision were obtained both before and after retreatment for retreated patients. Results The multifocal retreatment rate was 10.8% (45/416 eyes). The eyes that required retreatment had significantly higher residual refractive astigmatism compared with those who did not require retreatment (1.21±0.51 D vs 0.51±0.39 D, P<0.01). The retreatment rate for the two most commonly implanted primary IOLs, blended bifocal (10.5%, 16/152) and bilateral trifocal (6.9%, 14/202) IOLs, was not statistically significantly different (P=0.12). In those requiring retreatment, refractive-related complaints were most common. Retreatment with refractive corneal surgery, in 11% of the eyes, and piggyback IOLs, in 89% of the eyes, was similarly successful, improving patient complaints 78% of the time. Conclusion Complaints related to ametropia were the main reasons for retreatment. Residual astigmatism appears to be an important determinant of retreatment rate after multifocal IOL implantation. Retreatment can improve symptoms for a high percentage of patients; a piggyback IOL is a viable retreatment option. PMID:27041983

  7. Mesola red deer: physical characteristics, population dynamics and conservation perspectives

    Directory of Open Access Journals (Sweden)

    Stefano Mattioli

    2003-10-01

    Full Text Available Abstract The biometry, demography and genetics of red deer Cervus elaphus of Mesola Wood (NE Italy, are presented and discussed in relation to the conservation of this population. Modest body size, low stature, oversimplified antlers and a low reproductive performance characterise red deer from Mesola Wood. The mitochondrial genome showed a private haplotype, different from other red deer in Italy and central Europe. The uniqueness of this nucleus and its biogeographic importance make a long-term conservation plan particularly urgent. Management measures such as fallow deer reduction, winter feeding and pasture mowing were tested, giving promising results. The physical condition of the animals improved, calf and adult mortality declined, and a few cases of antlers with bez tine or crown were reported in this study after four decades. Riassunto Il Cervo della Mesola: caratteristiche fisiche, dinamica di popolazione e prospettive di conservazione La biometria, la demografia e la genetica del cervo Cervus elaphus del Gran Bosco della Mesola (Italia nord-orientale, vengono presentate e discusse in relazione alla salvaguardia di questa popolazione. Il cervo della Mesola risulta caratterizzato dalle modeste dimensioni corporee, dalla struttura semplificata dei palchi e da un basso rendimento riproduttivo. L'analisi del genoma mitocondriale ha evidenziato un aplotipo privato, diverso da quello degli altri cervi italiani e centroeuropei. L'unicità di questo nucleo e la sua importanza biogeografica rendono particolarmente urgente un piano di conservazione a lungo termine. Sono stati verificati interventi gestionali quali la riduzione numerica dei daini, il foraggiamento invernale e lo sfalcio delle superfici a pascolo, con risultati promettenti. Le condizioni fisiche degli animali sono migliorate, la mortalità tra i piccoli e gli adulti è diminuita, e sono stati registrati alcuni

  8. Coccolithophore responses to environmental variability in the South China Sea: species composition and calcite content

    Science.gov (United States)

    Jin, Xiaobo; Liu, Chuanlian; Poulton, Alex J.; Dai, Minhan; Guo, Xianghui

    2016-08-01

    Coccolithophore contributions to the global marine carbon cycle are regulated by the calcite content of their scales (coccoliths) and the relative cellular levels of photosynthesis and calcification rates. All three of these factors vary between coccolithophore species and with response to the growth environment. Here, water samples were collected in the northern basin of the South China Sea (SCS) during summer 2014 in order to examine how environmental variability influenced species composition and cellular levels of calcite content. Average coccolithophore abundance and their calcite concentration in the water column were 11.82 cells mL-1 and 1508.3 pg C mL-1, respectively, during the cruise. Water samples can be divided into three floral groups according to their distinct coccolithophore communities. The vertical structure of the coccolithophore community in the water column was controlled by the trophic conditions, which were regulated by mesoscale eddies across the SCS basin. The evaluation of coccolithophore-based calcite in the surface ocean also showed that three key species in the SCS (Emiliania huxleyi, Gephyrocapsa oceanica, Florisphaera profunda) and other larger, numerically rare species made almost equal contributions to total coccolith-based calcite in the water column. For Emiliania huxleyi biometry measurements, coccolith size positively correlated with nutrients (nitrate, phosphate), and it is suggested that coccolith length is influenced by light and nutrients through the regulation of growth rates. Larger-sized coccoliths were also linked statistically to low pH and calcite saturation states; however, it is not a simple cause and effect relationship, as carbonate chemistry was strongly co-correlated with the other key environmental factors (nutrients, light).

  9. Patterns of NPP, GPP, respiration, and NEP during boreal forest succession

    Science.gov (United States)

    Goulden, M.L.; Mcmillan, A.M.S.; Winston, G.C.; Rocha, A.V.; Manies, K.L.; Harden, J.W.; Bond-Lamberty, B. P.

    2011-01-01

    We combined year-round eddy covariance with biometry and biomass harvests along a chronosequence of boreal forest stands that were 1, 6, 15, 23, 40, 74, and 154 years old to understand how ecosystem production and carbon stocks change during recovery from stand-replacing crown fire. Live biomass (Clive) was low in the 1 and 6 year old stands, and increased following a logistic pattern to high levels in the 74 and 154year old stands. Carbon stocks in the forest floor (Cforest floor) and coarse woody debris (CCWD) were comparatively high in the 1year old stand, reduced in the 6 through 40year old stands, and highest in the 74 and 154year old stands. Total net primary production (TNPP) was reduced in the 1 and 6year old stands, highest in the 23 through 74year old stands and somewhat reduced in the 154year old stand. The NPP decline at the 154year old stand was related to increased autotrophic respiration rather than decreased gross primary production (GPP). Net ecosystem production (NEP), calculated by integrated eddy covariance, indicated the 1 and 6 year old stands were losing carbon, the 15year old stand was gaining a small amount of carbon, the 23 and 74year old stands were gaining considerable carbon, and the 40 and 154year old stands were gaining modest amounts of carbon. The recovery from fire was rapid; a linear fit through the NEP observations at the 6 and 15year old stands indicated the transition from carbon source to sink occurred within 11-12 years. The NEP decline at the 154year old stand appears related to increased losses from Clive by tree mortality and possibly from Cforest floor by decomposition. Our findings support the idea that NPP, carbon production efficiency (NPP/GPP), NEP, and carbon storage efficiency (NEP/TNPP) all decrease in old boreal stands. ?? 2010 Blackwell Publishing Ltd.

  10. Clinical applications and limitations of anterior segment optical coherence tomography%眼前节相干光断层扫描技术的临床应用进展

    Institute of Scientific and Technical Information of China (English)

    洪佳旭; 孙兴怀

    2010-01-01

    Optical coherence tomography (OCT) is being employed more and more often to facilitate the diagnosis and management of the anterior eye segment diseases. The cross-sectional imaging capability of its higher resolution allows OCT to measure and visualize clear anatomic structures, specifically in anterior chamber biometry, corneal pachymetric mapping, and anterior chamber angle. Fourier-domain OCT technique which achieves higher speed and higher resolution and time-domain OCT technique have driven their further application in ophthalmological practice. In this review, we describe the principles and characteristics of OCT, summarize the recent utility and the limitations of anterior segment OCT in the pathologies and surgical planning of anterior chamber, cornea and surrounding areas, and prospect its future development.%近年来,相干光断层扫描(OCT)技术在眼前节疾病诊治中的应用飞速发展.由于OCT的分辨率更高、成像效果更好且为无创的非接触测量,所以它在前房参数测量、角膜地形测量及房角测量等方面具有明显的优势.高速、高分辨率的傅立叶OCT技术与传统的时域OCT技术相辅相成,推动和发展OCT在眼科临床中的应用.本文介绍了眼前节OCT的成像原理,结合相应的临床应用展示了OCT在眼前节疾病发病机制研究及诊疗中的价值与局限,并对OCT技术未来的发展进行展望.

  11. A Novel Method of Quantitative Anterior Chamber Depth Estimation Using Temporal Perpendicular Digital Photography

    Science.gov (United States)

    Zamir, Ehud; Kong, George Y.X.; Kowalski, Tanya; Coote, Michael; Ang, Ghee Soon

    2016-01-01

    Purpose We hypothesize that: (1) Anterior chamber depth (ACD) is correlated with the relative anteroposterior position of the pupillary image, as viewed from the temporal side. (2) Such a correlation may be used as a simple quantitative tool for estimation of ACD. Methods Two hundred sixty-six phakic eyes had lateral digital photographs taken from the temporal side, perpendicular to the visual axis, and underwent optical biometry (Nidek AL scanner). The relative anteroposterior position of the pupillary image was expressed using the ratio between: (1) lateral photographic temporal limbus to pupil distance (“E”) and (2) lateral photographic temporal limbus to cornea distance (“Z”). In the first chronological half of patients (Correlation Series), E:Z ratio (EZR) was correlated with optical biometric ACD. The correlation equation was then used to predict ACD in the second half of patients (Prediction Series) and compared to their biometric ACD for agreement analysis. Results A strong linear correlation was found between EZR and ACD, R = −0.91, R2 = 0.81. Bland-Altman analysis showed good agreement between predicted ACD using this method and the optical biometric ACD. The mean error was −0.013 mm (range −0.377 to 0.336 mm), standard deviation 0.166 mm. The 95% limits of agreement were ±0.33 mm. Conclusions Lateral digital photography and EZR calculation is a novel method to quantitatively estimate ACD, requiring minimal equipment and training. Translational Relevance EZ ratio may be employed in screening for angle closure glaucoma. It may also be helpful in outpatient medical clinic settings, where doctors need to judge the safety of topical or systemic pupil-dilating medications versus their risk of triggering acute angle closure glaucoma. Similarly, non ophthalmologists may use it to estimate the likelihood of acute angle closure glaucoma in emergency presentations. PMID:27540496

  12. Refraction and eye anterior segment parameters in schizophrenic patients

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    Tongabay Cumurcu

    2015-06-01

    Full Text Available ABSTRACT Purpose: To evaluate the difference in terms of refractive errors and anterior segment parameters between schizophrenic patients and healthy volunteers. Methods: This study compared 70 patients (48 men who were diagnosed with schizophrenia with a control group of 60 (35 men who were similar in terms of age, gender, education, and socioeconomic level. Anterior segment examination was performed using a Scheimflug system. Axial length and lens thickness (LT were measured using optic biometry. The following tests were administered to the psychiatric patient group: Brief Psychiatric Rating Scale (BPRS, Scale for the Assessment of Negative Symptoms (SANS, and Scale for the Assessment of Positive Symptoms (SAPS. Results: Mild myopia was detected in both the schizophrenic and control groups, with no statistically significant difference (p>0.005. Corneal volume (CV, anterior chamber volume (ACV, anterior chamber depth (ACD, and central corneal thickness (CCT values were lower in the schizophrenic group, and there was a statistically significant between-group difference (p=0.026, p=0.014, p=0.048, and p=0.005, respectively. LT was greater in schizophrenics, and the difference was found to be statistically significant (p=0.006. A statistically significant negative correlation was found between SAPS and cylinder values (p=0.008. The axial eye length, cylinder value, pupil diameter, mean keratometric value, and anterior chamber angle revealed no statistically significant difference between the groups (p>0.05. Conclusion: No statistically significant difference was detected in terms of refraction disorders between schizophrenics and the healthy control group, while some differences in anterior chamber parameters were present. These results demonstrate that schizophrenics may exhibit clinical and structural differences in the eye.

  13. Effect of Biometric Characteristics on the Change of Biomechanical Properties of the Human Cornea due to Cataract Surgery

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    Xuefei Song

    2014-01-01

    Full Text Available Purpose. To determine the impact of biometric characteristics on changes of biomechanical properties of the human cornea due to standard cataract surgery using biomechanical analysis. Patients and Methods. This prospective consecutive cross-sectional study comprised 54 eyes with cataract in stages I or II that underwent phacoemulsification and IOL implantation. CH, CRF, IOPg, and IOPcc intraocular pressure were measured by biomechanical analysis preoperatively and at 1 month postoperatively. Changes (Δ were calculated as preoperative value versus postoperative value. Biometrical data were extracted from TMS-5 (CSI and SAI, IOLMaster (AL, and EM-3000 (CCT and ECC preoperatively. Results. The average values of the changes were ΔCH=-0.45±1.27 mmHg, ΔCRF=-0.88±1.1 mmHg, ΔIOPg=-1.58±3.15 mmHg, and ΔIOPcc=-1.45±3.93 mmHg. The higher the CSI the smaller the decrease in CH (r=0.302, P=0.028. The higher the CCT the larger the decrease in CRF (r=-0.371, P=0.013. The higher the AL the smaller the decrease in IOPg (r=0.417, P=0.005. The higher the AL, SAI, and EEC the smaller the decrease in IOPcc (r=0.351, P=0.001; r=-0.478, P<0.001; r=0.339, P=0.013. Conclusions. Corneal biomechanical properties were affected by comprehensive factors after cataract surgery, including corneal endothelium properties, biometry, and geometrical characteristics.

  14. Fetal growth in pregnancies conceived after gastric bypass surgery in relation to surgery-to-conception interval: a Danish national cohort study.

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    Lone Nikoline Nørgaard

    Full Text Available OBJECTIVE: To describe early and late fetal growth in pregnancies conceived after gastric bypass surgery in relation to time from surgery to conception of pregnancy. METHODS: National cohort study on 387 Danish women, who had laparoscopic or open gastric bypass surgery prior to a singleton pregnancy in which first trimester screening was performed between January 2008 and June 2011. Data were derived from national registers (Danish National Registry of Patients and Danish National Birth Registry, Pregnancy Complications and Abortion-clinical quality database (PreCAb and the Danish Fetal Medicine Database. Main outcome measures were early and late fetal growth in relation to time from bariatric surgery to conception of the pregnancy. Early fetal growth was expressed as "Fetal Growth Index": the ratio between the estimated number of days from first trimester ultrasound to second trimester ultrasound biometries and the actual calender time elapsed in days. Late fetal growth was expressed as the observed versus expected birthweight according to gestational age (GA. RESULTS: The surgery-to-conception interval ranged from 3 to 1851 days with a mean value of 502 (SD, 351 days. The mean "fetal growth index" was 0.99 (SD, 0.02 days/day and thus significantly lower than in the background population (mean, 1.04 (SD, 0.09 days/day, p<0.0001. The proportion of infants being small for gestational age was 18.8% and the proportion of large for gestational age infants was 6.7%. The correlation coefficients between surgery-to-conception time and "fetal growth index" and birthweight according to GA were 0.01 (p = 0.8 and 0.04 (p = 0.4, respectively. CONCLUSION: Fetal growth index was lower than reported in the background population. No correlation was found between the surgery-to-conception interval and early or late fetal growth in pregnancies conceived after gastric bypass surgery.

  15. Zusammenfassungen in Deutsch

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    Nora Wiedenmann

    2010-04-01

    Full Text Available 1. Eine hybride Heuristik zur Lösung des Triangulations-ProblemsGloria Cerasela Crişan, Camelia Mihaela Pintea2. Vorschlag einer datenbasierten Architektur für eine Kardiologie-Netzwerk-AnwendungHorea Adrian Greblă, Călin Ovidiu Cenan3. Erziehungswissenschaftliche Forschung: zur technologischen Dimension des PrivatlebensLiliana Mâţă4. Ausgewählte Operationen für Assembler EncodingTomasz Praczyk5. Computerbasierte Programme zur Sprechtherapie bei Dyslalie und Dyslexie-DysgraphieIolanda Tobolcea, Mirela Danubianu6. Gedacht soap, jedoch gesagt ‘oaps’. Der Lautvorspann (Sound Preparation Period: Backward Calculation von der Äußerung bis zur Muskel-InnervierungNora Wiedenmann7. State of the Art: Lösungskonzepte für KoalitionsspieleSimina Brânzei8. Die Faktoren von Intelligenz-Entwicklung und individuelle PerformanzGheorghe Dumitriu9. Einige Ergebnisse zur Fuzzy-TheorieAngel Garrido10. Wissensfusion in akademischen NetzwerkenHorea Adrian Grebla, Calin Ovidiu Cenan, Liana Stanca11. Eine Delphi-Anwendung für die syntaktische und lexikalische Analyse eines Phrasen verwendenden Cocke-Younger-Kasami -Algorithmus.Bogdan Pătruţ, Ioana Boghian12. Über ein Problem von Passdaten bei Gebrauch von Bézier-KurvenCarmen Violeta Muraru13. State of the Art: Verifizierung von Unterschriften-Biometrie-DatenMohamed Soltane, Noureddine Doghmane, Noureddine Guersi14. Die Neurowissenschaften des Lehrens von Erzähltexten: zur Erleichterung der sozialenund emotionalen EntwicklungLisa Whalen15. Logische Grundlagen der Künstlichen IntelligenzAngel Garrido16. Psychologisch-mystische Aspekte zu St. Evagrius Ponticus und St. Maximus dem BekennerGheorghe Teofil Popovici17. Geo-spatiale Analyse-StrukturElisabeta Antonia Haller18. Henric Sanielevici – von der Literaturkritik zur Anatomie oder Wie beeinflusst der Schädelumfang die Literatur?Adrian Jicu19. Wie komplex das menschliche Gehirn funktioniert: die beiden HemisphärenIulia Cristina Timofti20

  16. Thoracic and heart biometrics of non-anesthetized agouti (Dasyprocta primnolopha Wagler, 1831 measured on radiographic images

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    Anaemilia das N. Diniz

    2013-03-01

    visualized dorsal-cranially and located right of the midline. The data obtained allowed the acquisition of the first reference values for biometry of the heart of agoutis, contributing to better understanding of cardiac morphology and identification of cardiomyopathy in these animals.

  17. Bridging local scale ground-based tree assessments to large scale inventory and remote sensing data to quantify landscape representativeness of an atmospheric study tower

    Science.gov (United States)

    Bizjack, M.; Brooks, B.; Dietze, M. C.; Serbin, S. P.

    2012-12-01

    Observations of an ecosystem's capacity to sequester carbon from the atmosphere (e.g. net ecosystem exchange, NEE) are important measurements for validating results from model simulations and for determining the effects that climate change is having on the world's biomes. Eddy covariance towers in the Chequamegon Ecosystem Atmosphere Study domain (ChEAS) in northern Wisconsin were established to quantify this interaction between the terrestrial biosphere and the atmosphere. Data assimilation systems and modeling studies such as the PaleoEcological Observatory Network (PalEON) incorporate in situ data from ChEAS in order to determine climate change effects across landscapes. However, implicit to studies that use tower data is the assumption that the flux footprint is representative of the larger domain. In this study we quantify the forest landscape sampled by a tower and compare that to the landscape outside the flux footprint. To determine similarity indices and ecological-representativeness we canvassed small areas surrounding ChEAS flux towers and made ground-based biometry and forest composition measurements and combined these with remote sensing (LandSat), and Forest Inventory and Analysis (FIA) data. We estimated landscape similarity based on tree species richness, composition and stand structure and extrapolated our plot-scale (20m2) ground-based measurements using a semi-supervised k-means clustering approach of satellite surface reflectance data. Because the productivity and ecology within a limited tower footprint (1km2) can still reflect the productivity and ecology of a larger region (100km2) despite different species composition, we collected additional growth data through a rapid tree assessment by measuring DBH and coring of dominant, codominant, and suppressed trees in each plot. We combined our ground-based data that is limited in extent with wide-ranging remote sensing data to develop similarity values across the region, which can be used to

  18. Myopic shift and outdoor activity among primary school children: one-year follow-up study in Beijing.

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    Yin Guo

    Full Text Available PURPOSE: To assess whether a change in myopia related oculometric parameters of primary school children in Beijing was associated with indoors and outdoors activity. METHODS: The longitudinal school-based study included school children who were examined in 2011 and who were re-examined in 2012. The children underwent a comprehensive eye examination including ocular biometry by optical low-coherence reflectometry and non-cycloplegic refractometry. Parents and children had a detailed interview including questions on time spent indoors and outdoors. RESULTS: Out of 681 students examined at baseline, 643 (94.4% returned for follow-up examination. Within the one-year period, mean time spent daily outdoors increased by 0.4±0.9 hours, mean axial length by 0.26±0.49 mm, the ratio of axial length divided by anterior corneal curvature (AL/CC by 0.03±0.06, and myopic refractive error by -0.06±0.89 diopters. In multivariate analysis, elongation of axial length was significantly associated with less total time spent outdoors (P = 0.02; standardized coefficient beta -0.12 and more time spent indoors with studying (P = 0.007; beta: 0.14 after adjustment for maternal myopia (P = 0.02; beta: 0.12. An increase in AL/CC was significantly associated with less time spent outdoors (P = 0.01; beta:-0.12 after adjustment for paternal myopia (P = 0.003; beta: 0.15 and if region of habitation was excludedors for leisure (P = 0.006; beta:-0.13, with less total time spent outdoors (P = 0.04; beta:-0.10, or with more time spent i. An increase in myopic refractive error, after adjustment for age, was significantly associated with less time spent outdo ndoors with studying (P = 0.005; beta: 0.13. CONCLUSIONS: A change in oculometric parameters indicating an increase in myopia was significantly associated with less time spent outdoors and more time spent indoors in school children in Greater Beijing within a study period of one year. Our

  19. Influence of the sample anticoagulant on the measurements of impedance aggregometry in cardiac surgery

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    Cristina Solomon

    2008-10-01

    Full Text Available Cristina Solomon1, Michael Winterhalter1, Isabel Gilde1, Ludwig Hoy2, Andreas Calatzis3, Niels Rahe-Meyer11Department of Anesthesiology, Hannover Medical School, Hannover, Germany; 2Institute for Biometry, Hannover Medical School, Hannover, Germany; 3Department Hemostasis Transfusion Medicine, University Hospital Munich, Munich, GermanyBackground: The standard method of assessment of platelet function is represented by light transmission aggregometry (LTA, performed in citrated platelet-rich plasma (PRP. With LTA, decrease and subsequent post-cardiopulmonary bypass (CPB recovery of platelet function have been reported during cardiac surgery. Multiple electrode aggregometry (MEA may be used as point-of-care method to monitor perioperative changes in platelet function. Since MEA assesses macroaggregation which is influenced by the plasmatic levels of unbound calcium, citrate may be inadequate as anticoagulant for MEA. We used citrate and heparin for MEA samples, to see with which anticoagulant the intraoperative decrease and postoperative recovery in platelet function previously described with other aggregometric methods in cardiac surgery may be observed with MEA.Methods: Blood was obtained from 60 patients undergoing routine cardiac surgery and the samples were collected in standard tubes containing unfractionated heparin (50 U/mL or trisodium citrate (3.2%. The samples were obtained before CPB, at 30 minutes on CPB, end of CPB and on the first postoperative day. MEA was performed using the Multiplate® analyzer. Collagen (COLtest, 100 μg/mL and TRAP-6 (thrombin receptor activating peptide, TRAPtest, 1mM/mL were used as aggregation agonists.Results: Platelet aggregometric response decreased significantly during CPB. Platelet aggregation assessed using TRAP-6 as agonist on heparinized blood significantly correlated with the duration of CPB (r = −0.41, p = 0.001, 2-tailed Pearson test. The aggregometric analysis performed on the first

  20. Long-term use of amiodarone before heart transplantation significantly reduces early post-transplant atrial fibrillation and is not associated with increased mortality after heart transplantation

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    Rivinius R

    2016-02-01

    Full Text Available Rasmus Rivinius,1 Matthias Helmschrott,1 Arjang Ruhparwar,2 Bastian Schmack,2 Christian Erbel,1 Christian A Gleissner,1 Mohammadreza Akhavanpoor,1 Lutz Frankenstein,1 Fabrice F Darche,1 Patrick A Schweizer,1 Dierk Thomas,1 Philipp Ehlermann,1 Tom Bruckner,3 Hugo A Katus,1 Andreas O Doesch1 1Department of Cardiology, Angiology and Pneumology, 2Department of Cardiac Surgery, Heidelberg University Hospital, 3Institute for Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany Background: Amiodarone is a frequently used antiarrhythmic drug in patients with end-stage heart failure. Given its long half-life, pre-transplant use of amiodarone has been controversially discussed, with divergent results regarding morbidity and mortality after heart transplantation (HTX.Aim: The aim of this study was to investigate the effects of long-term use of amiodarone before HTX on early post-transplant atrial fibrillation (AF and mortality after HTX.Methods: Five hundred and thirty patients (age ≥18 years receiving HTX between June 1989 and December 2012 were included in this retrospective single-center study. Patients with long-term use of amiodarone before HTX (≥1 year were compared to those without long-term use (none or <1 year of amiodarone. Primary outcomes were early post-transplant AF and mortality after HTX. The Kaplan–Meier estimator using log-rank tests was applied for freedom from early post-transplant AF and survival.Results: Of the 530 patients, 74 (14.0% received long-term amiodarone therapy, with a mean duration of 32.3±26.3 months. Mean daily dose was 223.0±75.0 mg. Indications included AF, Wolff–Parkinson–White syndrome, ventricular tachycardia, and ventricular fibrillation. Patients with long-term use of amiodarone before HTX had significantly lower rates of early post-transplant AF (P=0.0105. Further, Kaplan–Meier analysis of freedom from early post-transplant AF showed significantly lower rates of AF in this

  1. Advantageous effects of immunosuppression with tacrolimus in comparison with cyclosporine A regarding renal function in patients after heart transplantation

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    Helmschrott M

    2015-02-01

    Full Text Available Matthias Helmschrott,1 Rasmus Rivinius,1 Arjang Ruhparwar,2 Bastian Schmack,2 Christian Erbel,1 Christian A Gleissner,1 Mohammadreza Akhavanpoor,1 Lutz Frankenstein,1 Philipp Ehlermann,1 Tom Bruckner,3 Hugo A Katus,1 Andreas O Doesch1 1Department of Cardiology, Angiology, Pneumology, 2Department of Cardiac Surgery, 3Institute for Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany Background: Nephrotoxicity is a serious adverse effect of calcineurin inhibitor therapy in patients after heart transplantation (HTX.Aim: In this retrospective registry study, renal function within the first 2 years after HTX in patients receiving de novo calcineurin inhibitor treatment, that is, cyclosporine A (CSA or tacrolimus (TAC, was analyzed. In a consecutive subgroup analysis, renal function in patients receiving conventional tacrolimus (CTAC was compared with that of patients receiving extended-release tacrolimus (ETAC.Methods: Data from 150 HTX patients at Heidelberg Heart Transplantation Center were retrospectively analyzed. All patients were continuously receiving the primarily applied calcineurin inhibitor during the first 2 years after HTX and received follow-up care according to center practice.Results: Within the first 2 years after HTX, serum creatinine increased significantly in patients receiving CSA (P<0.0001, whereas in patients receiving TAC, change of serum creatinine was not statistically significant (P=not statistically significant [ns]. McNemar’s test detected a significant accumulation of patients with deterioration of renal function in the first half year after HTX among patients receiving CSA (P=0.0004. In patients receiving TAC, no significant accumulation of patients with deterioration of renal function during the first 2 years after HTX was detectable (all P=ns. Direct comparison of patients receiving CTAC versus those receiving ETAC detected no significant differences regarding renal function between

  2. A HEALTHY APPROACH TO HEALTHY FOOD FROM THE HEALTHY SEA: EVALUATION OF FISH ORIGINATING FROM THE PROTECTED AREA

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    Ivana Bušelić

    2012-12-01

    Full Text Available The Lastovo Archipelago Nature Park (NP adopted a special fishing protocol in conformity with its Code of Conduct. The present study analyses the littoral fisheries resources of the NP and compares them to baseline data from 2010 to evaluate possible changes produced by the proclaimed fisheries management. Littoral fisheries resources were sampled by experimental trammel net. Analyses were performed on total fish abundance and biomass, diversity indices and multivariate abundance and biomass structure of caught assemblages. Although no significant difference in the catches was found regarding average species richness, total abundance and biomass, there appears to be a weak indication of change. Namely, an inclining trend was observed at protected zones (14% higher species richness, 9% higher total abundance and 19% higher total biomass, while fishing zones showed a declining trend (7% lower species richness, 12% lower total abundance and 24% lower total biomass. Since the variation in average species richness, total abundance and biomass is not significant and could therefore be coincidental (reflecting natural spatial and temporal variability, it is necessary to analyse the 2012 catch data in order to establish whether the observed trends continued and whether they could be attributed to differing levels of protection. Average catch per unit effort - CPUE (unit effort being a 33 m long trammel net is x ± SE = 1,6 ± 0,1 kg / net, which is rated as a 'very good' catch. In this respect the situation is quite favourable in the study area compared to many other sites in the Adriatic. However, biometry characteristics of commercially highly valuable and thus most targeted species show that average landing sizes are more than half the size of those attainable. Overall, plausible explanation for the observed limited effects of protection for the recovery of fisheries resources to date is that not enough time has passed to allow for significant

  3. Periodic limb movements during REM sleep in multiple sclerosis: a previously undescribed entity

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    Veauthier C

    2015-09-01

    Full Text Available Christian Veauthier,1 Gunnar Gaede,2,3 Helena Radbruch,2 Joern-Peter Sieb,4,5 Klaus-Dieter Wernecke,6,7 Friedemann Paul2,8 1Interdisciplinary Center of Sleep Medicine, Charité University Medicine Berlin, Germany; 2NeuroCure Clinical Research Center, Charité University Medicine Berlin, Germany; 3Department of Neurology, St Joseph Hospital Berlin-Weissensee, Berlin, Germany; 4Department of Neurology, HELIOS Hanseklinikum Stralsund, Stralsund, Germany; 5Department of Neurology, University Hospital Bonn, Bonn, Germany; 6CRO SOSTANA GmbH, Berlin, Germany; 7Institute of Medical Biometry, Charité University Medicine Berlin, Berlin, Germany; 8Clinical and Experimental Multiple Sclerosis Research Center, Department of Neurology, Charité University Medicine Berlin, Berlin, Germany Background: There are few studies describing periodic limb movement syndrome (PLMS in rapid eye movement (REM sleep in patients with narcolepsy, restless legs syndrome, REM sleep behavior disorder, and spinal cord injury, and to a lesser extent, in insomnia patients and healthy controls, but no published cases in multiple sclerosis (MS. The aim of this study was to investigate PLMS in REM sleep in MS and to analyze whether it is associated with age, sex, disability, and laboratory findings. Methods: From a study of MS patients originally published in 2011, we retrospectively analyzed periodic limb movements (PLMs during REM sleep by classifying patients into two subgroups: PLM during REM sleep greater than or equal to ten per hour of REM sleep (n=7 vs less than ten per hour of REM sleep (n=59. A univariate analysis between PLM and disability, age, sex, laboratory findings, and polysomnographic data was performed. Results: MS patients with more than ten PLMs per hour of REM sleep showed a significantly higher disability measured by the Kurtzke expanded disability status scale (EDSS (P=0.023. The presence of more than ten PLMs per hour of REM sleep was associated with a

  4. Phakic anterior chamber intraocular lens (Verisyse™ implantation in children for treatment of severe ansiometropia myopia and amblyopia: Six-month pilot clincial trial and review of literature

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    Amir Pirouzian

    2009-06-01

    Full Text Available Amir Pirouzian1,3, Kenneth C Ip2, Henry S O’Halloran31The Permanente Medical Group, Santa Clara, CA, USA; 2The Permanente Medical Group, San Francisco, CA, USA; 3Rady’s Children’s Hospital of San Diego, San Diego, CA, USAPurpose: The current study aims to evaluate both safety and efficacy of Verisyse™ (AMO, Irvine, CA phakic anterior chamber intraocular lens (IOL in the reduction of clinically significant (>-8 D myopic anisometropia in children who are noncompliant to traditional medical treatment including spectacle correction or contact lenses.Design: Retrospective interventional case series.Methods: Six anisometropic myopic pediatric patients in one practice were identified through chart-review. None of the patients were compliant with specatacle correction or contact lens wear and as a result had dense amblyopia of less than 20/400 by Snellen or Allen visual acuity (mean <20/400. All patients underwent Verisyse™ phakic IOL implantation in the more myopic eye by one surgeon (AP. Pre- and post-operative visual acuity, anterior/posterior segment examination, stereoacuity, axial biometry measurements, cycloplegic refraction, and endothelial cell counts were performed in all patients whenever feasible.Results: The age of patients ranged from 5–11 years. The mean post-operative follow-up time was six months from the time of IOL insertion. Improvement in visual acuity >6 lines was achieved in four patients (mean visual acuity of 20/70 at six months. Improvement in stereoacuity was noted in all six patients (from total mean zero seconds-arc to six-months post-operative mean of 500 seconds-arc by randot stereoacuity testing. Improvement of >2 lines of visual acuity lines was achieved in the other two patients. No patient lost any lines of visual acuity. Enhanced physical activity, coordination, and improved social interaction were noted in patients and were reported by the parents. No intra/post-operative complications were noted

  5. Age-related effects on leaf area/sapwood area relationships, canopy transpiration and carbon gain of Norway spruce stands (Picea abies) in the Fichtelgebirge, Germany.

    Science.gov (United States)

    Köstner, B; Falge, E; Tenhunen, J D

    2002-06-01

    Stand age is an important structural determinant of canopy transpiration (E(c)) and carbon gain. Another more functional parameter of forest structure is the leaf area/sapwood area relationship, A(L)/A(S), which changes with site conditions and has been used to estimate leaf area index of forest canopies. The interpretation of age-related changes in A(L)/A(S) and the question of how A(L)/A(S) is related to forest functions are of current interest because they may help to explain forest canopy fluxes and growth. We conducted studies in mature stands of Picea abies (L.) Karst. varying in age from 40 to 140 years, in tree density from 1680 to 320 trees ha(-1), and in tree height from 15 to 30 m. Structural parameters were measured by biomass harvests of individual trees and stand biometry. We estimated E(c) from scaled-up xylem sap flux of trees, and canopy-level fluxes were predicted by a three-dimensional microclimate and gas exchange model (STANDFLUX). In contrast to pine species, A(L)/A(S) of P. abies increased with stand age from 0.26 to 0.48 m(2) cm(-2). Agreement between E(c) derived from scaled-up sap flux and modeled canopy transpiration was obtained with the same parameterization of needle physiology independent of stand age. Reduced light interception per leaf area and, as a consequence, reductions in net canopy photosynthesis (A(c)), canopy conductance (g(c)) and E(c) were predicted by the model in the older stands. Seasonal water-use efficiency (WUE = A(c)/E(c)), derived from scaled-up sap flux and stem growth as well as from model simulation, declined with increasing A(L)/A(S) and stand age. Based on the different behavior of age-related A(L)/A(S) in Norway spruce stands compared with other tree species, we conclude that WUE rather than A(L)/A(S) could represent a common age-related property of all species. We also conclude that, in addition to hydraulic limitations reducing carbon gain in old stands, a functional change in A(L)/A(S) that is related to

  6. A simple heuristic for Internet-based evidence search in primary care: a randomized controlled trial

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    Eberbach A

    2016-08-01

    Full Text Available Andreas Eberbach,1 Annette Becker,1 Justine Rochon,2 Holger Finkemeler,1Achim Wagner,3 Norbert Donner-Banzhoff1 1Department of Family and Community Medicine, Philipp University of Marburg, Marburg, Germany; 2Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany; 3Department of Sport Medicine, Justus-Liebig-University of Giessen, Giessen, Germany Background: General practitioners (GPs are confronted with a wide variety of clinical questions, many of which remain unanswered. Methods: In order to assist GPs in finding quick, evidence-based answers, we developed a learning program (LP with a short interactive workshop based on a simple ­three-step-heuristic to improve their search and appraisal competence (SAC. We evaluated the LP ­effectiveness with a randomized controlled trial (RCT. Participants (intervention group [IG] n=20; ­control group [CG] n=31 rated acceptance and satisfaction and also answered 39 ­knowledge ­questions to assess their SAC. We controlled for previous knowledge in content areas covered by the test. Results: Main outcome – SAC: within both groups, the pre–post test shows significant (P=0.00 improvements in correctness (IG 15% vs CG 11% and confidence (32% vs 26% to find evidence-based answers. However, the SAC difference was not significant in the RCT. Other measures: Most workshop participants rated “learning atmosphere” (90%, “skills acquired” (90%, and “relevancy to my practice” (86% as good or very good. The ­LP-recommendations were implemented by 67% of the IG, whereas 15% of the CG already conformed to LP recommendations spontaneously (odds ratio 9.6, P=0.00. After literature search, the IG showed a (not significantly higher satisfaction regarding “time spent” (IG 80% vs CG 65%, “quality of information” (65% vs 54%, and “amount of information” (53% vs 47%.Conclusion: Long-standing established GPs have a good SAC. Despite high acceptance, strong

  7. A comparative study of a modified filtering trabeculotomy and conventional trabeculectomy

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    Matlach J

    2015-03-01

    Full Text Available Juliane Matlach,1,* Matthias Hipp,1,* Martin Wagner,2,3 Peter U Heuschmann,2,3 Thomas Klink,1 Franz Grehn11Department of Ophthalmology, 2Institute of Clinical Epidemiology and Biometry, 3Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany*These authors contributed equally to this workPurpose: The objective of the study reported here was to evaluate the outcome of a modified filtering trabeculotomy (FTO without iridectomy in open-angle glaucoma compared with that of conventional trabeculectomy (trab.Patients and methods: Thirty eyes of 30 patients who underwent modified FTO were prospectively followed for 1 year and were compared with 87 conventional trab patients (87 eyes, matched for age and preoperative intraocular pressure (IOP. The FTO procedure consisted of a deep sclerectomy and trabeculotomy preserving the trabeculo-Descemet membrane, without iridectomy. Main outcome measures were complete success (IOP <18 mmHg and >/=30% IOP reduction, without medication, IOP, visual acuity, medication, complications, and subsequent surgeries.Results: In the conventional trab group, the median preoperative IOP was 23.0 mmHg (interquartile range 20.0–27.0 with 3.0 (2.0–3.0 medications, compared with 23.0 mmHg (20.0–27.0 and 3.0 (2.8–4.0 in the modified FTO group. Median postoperative IOP at 12 months was 12.0 mmHg (10.0–13.0 in the conventional trab and 11.0 mmHg (8.0–14.0 in the modified FTO group (P=0.3. The complete success rate at 1 year was 83.1% and 79.3% in the conventional trab group and modified FTO group, respectively (P=0.8. The complications hypotony (20.7%, 24.1%, choroidal detachment (2.3%, 10.3%, and bleb scarring (17.2%, 13.8%, were present in the conventional trab group and modified FTO group, respectively.Conclusion: The outcomes of reduced IOP and medications in the FTO group were not different to those in the conventional trab group over 1 year, but some complications were more often seen with

  8. Teaching Soil Science in Primary and Secondary Schools

    Science.gov (United States)

    Levine, Elissa R.

    1998-01-01

    general community. Students benefit by having a "hands-on"experience in science, math, and technology, using their local environment as a learning laboratory, as well as contact with scientists and other students around the world. Soil investigations have become an essential component of GLOBE. The protocols that have been developed so far within the GLOBE program include GPS Location, Atmosphere/Climate, Soil Characterization, Soil Moisture and Temperature, Land Cover/Biometry, Hydrology, and Satellite Image Classification. For the GLOBE Soil Characterization Protocol, students explore the physical. chemical, and morphological properties of the soil at their study site. They are asked to dig a pit or use an auger to about 1 meter at at least 2 sites.

  9. Modeling of mouse eye and errors in ocular parameters affecting refractive state

    Science.gov (United States)

    Bawa, Gurinder

    eye and suggest that extra efforts should be directed towards increasing the linear resolution of the rodent eye biometry and obtaining more accurate data for the refractive indices of the lens and vitreous.

  10. Estimating Gestational Age in Late Presenters to Antenatal Care in a Resource-Limited Setting on the Thai-Myanmar Border.

    Science.gov (United States)

    Moore, Kerryn A; Simpson, Julie A; Thomas, Kyla H; Rijken, Marcus J; White, Lisa J; Dwell, Saw Lu Moo; Paw, Moo Kho; Wiladphaingern, Jacher; Pukrittayakamee, Sasithon; Nosten, François; Fowkes, Freya J I; McGready, Rose

    2015-01-01

    Estimating gestational age in resource-limited settings is prone to considerable inaccuracy because crown-rump length measured by ultrasound before 14 weeks gestation, the recommended method for estimating gestational age, is often unavailable. Judgements regarding provision of appropriate obstetric and neonatal care are dependent on accurate estimation of gestational age. We determined the accuracy of the Dubowitz Gestational Age Assessment, a population-specific symphysis-fundal height formula, and ultrasound biometry performed between 16 and 40 weeks gestation in estimating gestational age using pre-existing data from antenatal clinics of the Shoklo Malaria Research Unit on the Thai-Myanmar border, where malaria is endemic. Two cohorts of women who gave birth to live singletons were analysed: 1) 250 women who attended antenatal care between July 2001 and May 2006 and had both ultrasound crown-rump length (reference) and a Dubowitz Gestational Age Assessment; 2) 975 women attending antenatal care between April 2007 and October 2010 who had ultrasound crown-rump length, symphysis-fundal measurements, and an additional study ultrasound (biparietal diameter and head circumference) randomly scheduled between 16 and 40 weeks gestation. Mean difference in estimated newborn gestational age between methods and 95% limits of agreement (LOA) were determined from linear mixed-effects models. The Dubowitz method and the symphysis-fundal height formula performed well in term newborns, but overestimated gestational age of preterms by 2.57 weeks (95% LOA: 0.49, 4.65) and 3.94 weeks (95% LOA: 2.50, 5.38), respectively. Biparietal diameter overestimated gestational age by 0.83 weeks (95% LOA: -0.93, 2.58). Head circumference underestimated gestational age by 0.39 weeks (95% LOA: -2.60, 1.82), especially if measured after 24 weeks gestation. The results of this study can be used to quantify biases associated with alternative methods for estimating gestational age in the absence of

  11. Predictors of poor perinatal outcome following maternal perception of reduced fetal movements--a prospective cohort study.

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    Philip J Dutton

    Full Text Available BACKGROUND: Maternal perception of reduced fetal movement (RFM is associated with increased risk of stillbirth and fetal growth restriction (FGR. RFM is thought to represent fetal compensation to conserve energy due to insufficient oxygen and nutrient transfer resulting from placental insufficiency. OBJECTIVE: To identify predictors of poor perinatal outcome after maternal perception of reduced fetal movements (RFM. DESIGN: Prospective cohort study. METHODS: 305 women presenting with RFM after 28 weeks of gestation were recruited. Demographic factors and clinical history were recorded and ultrasound performed to assess fetal biometry, liquor volume and umbilical artery Doppler. A maternal serum sample was obtained for measurement of placentally-derived or modified proteins including: alpha fetoprotein (AFP, human chorionic gonadotrophin (hCG, human placental lactogen (hPL, ischaemia-modified albumin (IMA, pregnancy associated plasma protein A (PAPP-A and progesterone. Factors related to poor perinatal outcome were determined by logistic regression. RESULTS: 22.1% of pregnancies ended in a poor perinatal outcome after RFM. The most common complication was small-for-gestational age infants. Pregnancy outcome after maternal perception of RFM was related to amount of fetal activity while being monitored, abnormal fetal heart rate trace, diastolic blood pressure, estimated fetal weight, liquor volume, serum hCG and hPL. Following multiple logistic regression abnormal fetal heart rate trace (Odds ratio 7.08, 95% Confidence Interval 1.31-38.18, (OR diastolic blood pressure (OR 1.04 (95% CI 1.01-1.09, estimated fetal weight centile (OR 0.95, 95% CI 0.94-0.97 and log maternal serum hPL (OR 0.13, 95% CI 0.02-0.99 were independently related to pregnancy outcome. hPL was related to placental mass. CONCLUSION: Poor perinatal outcome after maternal perception of RFM is closely related to factors which are connected to placental dysfunction. Novel tests of

  12. Myocardial stereology in captive Callithrix kuhlii (Callitrichidae, Primates: healthy animals versus animals affected by wasting marmoset syndrome (WMS Estereologia do músculo cardíaco em Callitrhix kuhlii cativos (Primatas, Callithrichidae: animais sadios versus animais afetados pela síndrome do emagrecimento progressivo (SEP

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    Thalita A. Pissinatti

    2007-02-01

    Full Text Available This study comprised 12 hearts of Wied´s black-tufted-ear marmoset, Callithrix kuhlii (Coimbra-Filho 1985, 6 with Wasting Marmoset Syndrome (WMS and 6 non-affected. Biometry was performed after death. After necropsy, the hearts were weighed, dissected, fixed in 10% formalin solution (pH 7.2, and processed for optical microscopy at 5µm sections stained with Haematoxylin-Eosin. Quantitative analysis was performed by stereological techniques. The statistical differences between the biometrical and stereological parameters were assessed by the Mann-Whitney test. The morphometric results showed that WMS causes a significant reduction in body and cardiac weights, and also in the volume density of vessels in those animals. Further studies are necessary to understand some of the results shown here.Neste estudo, foram utilizados corações de 12 Sagui-de-Wied, Callitrhix kuhlii (Coimbra-Filho 1985, sendo 6 animais afetados pela SEP e 6 animais normais. Após a morte foi realizada a biometria seguida de necropsia. Os corações foram fixados em formol tamponado a 10%, pesados e dissecados, sendo processados através de técnicas histológicas de rotina para microscopia óptica em cortes de 5µm corados por Hematoxilina-Eosina. As análises quantitativas foram feitas com o uso de técnicas estereológicas. As diferenças estatísticas entre os parâmetros biométricos e estereológicos foram avaliadas usando o test Mann-Whitney. Os resultados encontrados através da morfometria mostraram que a SEP causa uma redução significante do peso tanto corporal quanto do músculo cardíaco, e também uma redução no volume dos vasos nestes animais. Novos estudos são necessários para entender alguns dos resultados mostrados aqui.

  13. New Approaches to Treatment of Severe Intrauterine Growth Restriction

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    Zhanar Kurmangali

    2014-12-01

    Full Text Available Introduction. Intrauterine growth restriction (IUGR is a leading cause of perinatal morbidity and mortality due to placental insufficiency. Currently, one of the new approaches to treating this disease is the injection of nutrients to the fetus through intravascular port-systems (catheters.Objective. To assess the impact of nutrient injections as treatment to fetuses with severe growth retardation.Materials and methods. Pregnant women with IUGR (abdominal circumference (AC < 5th percentile with the absence of diastolic flow in the umbilical artery and a fetal gestational age of less than 30 weeks were randomly divided into two groups. The treatment group included six pregnant women who had an intravascular port-system for the infusion of nutrients (amino acids and glucose in the umbilical vein of the fetus for 14 ± 3 days. The control group consisted of eight patients who received only traditional dynamic monitoring and delivery at the optimum time of pregnancy. Fetal status was assessed using ultrasound equipment Accuvix V20 (Medison, South Korea by examining indicators of biometry and Doppler study of blood flow in utero, umbilical arteries, middle cerebral artery, and ductus venosus with fetal vascular resistance index calculation - pulsatility index (PI. Criteria for blood flow disturbances in the vessels were considered PI values above normal values for their gestational age, which were defined as absence or reverse blood flow in a diastole in the umbilical artery.Results. In a comparative analysis of the two groups, the treatment led to a 44.7% increase in AC of the fetus (121.0 ± 11.5 mm and 219.3 ± 18.3 mm, respectively, p ˂ 0.001. In all cases, the profile of blood flow in the umbilical artery had a positive diastolic component. As a result, there was a 45.3% decrease in PI in the umbilical artery (2.14 ± 0.54 and 1.17 ± 0.15, respectively, p < 0.05. Average fetal weight in the study group was not significantly higher than the

  14. Double-blinded, randomized controlled trial comparing real versus placebo acupuncture to improve tolerance of diagnostic esophagogastroduodenoscopy without sedation: a study protocol

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    Plaschke K

    2011-02-01

    by the independent Institute for Medical Biometry and Informatics (IMBI and the Center of Clinical Trials (KSC at the Department of General, Visceral and Transplantation Surgery, University of Heidelberg. Trial registration The trial is registered at Germanctr.de (DRKS00000164 on December 10th 2009. The first patient was randomized on February 2nd 2010.

  15. Direct comparison of the FibroScan XL and M probes for assessment of liver fibrosis in obese and nonobese patients

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    Durango E

    2013-07-01

    Full Text Available Esteban Durango,1,* Christian Dietrich,1,* Helmut Karl Seitz,1 Cornelia Ursula Kunz,2 Gilles T Pomier-Layrargues,3 Andres Duarte-Rojo,4 Melanie Beaton,5 Magdy Elkhashab,6 Robert P Myers,7 Sebastian Mueller1,3 1Department of Medicine and Center for Alcohol Research, Liver Disease and Nutrition, Salem Medical Center, 2Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany; 3Liver Unit, Centre Hospitalier de l'Université de Montréal, Hôpital Saint-Luc, Montréal, Quebec, 4Toronto Western Hospital Liver Centre, Toronto, Ontario; 5Multi-Organ Transplant Unit, University of Western Ontario, London, Ontario; 6The Toronto Liver Centre, Toronto, Ontario; 7Liver Unit, Division of Gastroenterology and Hepatology, Department of Medicine, University of Calgary, Calgary, Alberta, Canada *These authors contributed equally to this researchBackground: A novel Fibroscan XL probe has recently been introduced and validated for obese patients, and has a diagnostic accuracy comparable with that of the standard M probe. The aim of this study was to analyze and understand the differences between these two probes in nonobese patients, to identify underlying causes for these differences, and to develop a practical algorithm to translate results for the XL probe to those for the M probe.Methods and results: Both probes were directly compared first in copolymer phantoms of varying stiffness (4.8, 11, and 40 kPa and then in 371 obese and nonobese patients (body mass index, range 17.2–72.4 from German (n = 129 and Canadian (n = 242 centers. Liver stiffness values for both probes correlated better in phantoms than in patients (r = 0.98 versus 0.82, P 10 kPa for F0, F1–2, F3, and F4 fibrosis, respectively significantly improved agreement between the two probes from r = 0.655 to 0.679.Conclusion: Liver stiffness can be measured in significantly more obese and nonobese patients using the XL probe than the M probe. However, the XL

  16. Atomoxetine affects transcription/translation of the NMDA receptor and the norepinephrine transporter in the rat brain – an in vivo study

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    Udvardi PT

    2013-12-01

    Full Text Available Patrick T Udvardi,1,2 Karl J Föhr,3 Carolin Henes,1,2 Stefan Liebau,2 Jens Dreyhaupt,4 Tobias M Boeckers,2 Andrea G Ludolph11Department of Child and Adolescent Psychiatry and Psychotherapy, 2Institute of Anatomy and Cell Biology, 3Department of Anaesthesiology, 4Institute of Epidemiology and Medical Biometry, University of Ulm, Ulm, GermanyAbstract: Attention-deficit/hyperactivity disorder (ADHD is the most frequently diagnosed neurodevelopmental disorder. The norepinephrine transporter (NET inhibitor atomoxetine, the first nonstimulant drug licensed for ADHD treatment, also acts as an N-methyl-D-aspartate receptor (NMDAR antagonist. The compound's effects on gene expression and protein levels of NET and NMDAR subunits (1, 2A, and 2B are unknown. Therefore, adolescent Sprague Dawley rats were treated with atomoxetine (3 mg/kg, intraperitoneal injection [ip] or saline (0.9%, ip for 21 consecutive days on postnatal days (PND 21–41. In humans, atomoxetine's earliest clinical therapeutic effects emerge after 2–3 weeks. Material from prefrontal cortex, striatum (STR, mesencephalon (MES, and hippocampus (HC was analyzed either directly after treatment (PND 42 or 2 months after termination of treatment (PND 101 to assess the compound's long-term effects. In rat brains analyzed immediately after treatment, protein analysis exhibited decreased levels of the NET in HC, and NMDAR subunit 2B in both STR and HC; the transcript levels were unaltered. In rat brains probed 2 months after final atomoxetine exposure, messenger RNA analysis also revealed significantly reduced levels of genes coding for NMDAR subunits in MES and STR. NMDAR protein levels were reduced in STR and HC. Furthermore, the levels of two SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor proteins, synaptophysin and synaptosomal-associated protein 25, were also significantly altered in both treatment groups. This in vivo study detected atomoxetine's effects

  17. Relationship between refractive error and influencing factors in Children%儿童屈光不正与各屈光参数关系

    Institute of Scientific and Technical Information of China (English)

    石海军; 胡安丽; 竺泓

    2014-01-01

    目的:研究眼轴、角膜屈光力、晶状体屈光力与儿童屈光不正的关系。  方法:通过睫状肌麻痹检影验光及光学生物测量仪( IOL-Master)获得44例88眼的屈光不正度数、眼轴、角膜屈光力、前房深度等参数,经计算得到晶状体度数。按屈光不正度数分为远视组、正视组、近视组,直线相关与回归比较年龄和屈光不正与各屈光参数之间的关系。  结果:受试者44例88眼,平均年龄9.04±2.39岁,等效球镜(SE)-3.50~+8.75D;远视组眼轴比近视正视组短(P  结论:儿童随年龄增长,SE向近视发展,眼轴变长,晶状体屈光力增强;SE越偏远视,眼轴越短、晶状体屈光力越弱。%AIM: To evaluate the relationship between axial length ( AL ) , corneal and lens refractive power, and the refractive error in children. METHODS:Totally 44 children 88 eyes with refractive error who underwent retinoscopy with cycloplegia, to be measured spherical equivalent refractive error. Axial length was measured by a noncontact optical biometry ( ZEISS IOL-Master) , and corneal K and anterior chamber depth ( ACD) were also measured by the same machine. The refractive power of the lens was calculated by using the SRK formula. The patients were divided into 3 groups, myopia (SE+0. 50D) and emmetropia ( 0 to + 0. 50D ). Linear Correlation and Regression were used to evaluate the correlation among the optical parameters. RESULTS:Totally 44 subjects, 88 eyes, average 9. 04±2.39 years, spherical equivalent (SE) -3. 50D to +8. 75D. Hyperopic AL was shorter than the other two groups ( P CONCLUSION:As the children's growing up, SE trends to myopia, and AL becomes longer, and lens power is stronger.

  18. Fishery of the Uçá Crab Ucides Cordatus (Linnaeus, 1763 in a Mangrove Area in Cananéia, State of São Paulo, Brazil: Fishery Performance, Exploitation Patterns and Factors Affecting the Catches

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    Luis Felipe de Almeida Duarte

    2014-09-01

    Full Text Available The fishery of the mangrove crab (Ucides cordatus is one of the oldest sources of food, income and extractive activity in the estuarine systems of Brazil. The state of São Paulo has the largest population of any Brazilian state, and the city of Cananéia, in the Brazilian southeast has the highest recorded level of exploitation of the uçá-crab. Since 1990, this species has been under intense exploitation pressure due to the unauthorized use of a type of trap called 'redinha'. This type of fishing gear is considered harmful and is prohibited by Brazilian law, although its use is very common throughout the country. This study aims to evaluate the exploitation patterns of U. cordatus based on landing data and monitoring of the crab fishermen to verify the population structure of the crab stock and to identify the factors that influence the catches. A general view of the sustainability of the fishery for this resource is also provided for five defined mangrove sectors (areas A to E at Cananéia. For this purpose, fishery data were recorded during 2009-2010 by the Instituto de Pesca (APTA/SAA-SP, and monitoring of the capture procedures used by two fishermen was conducted to obtain biometry data (CW, carapace width and gender data for the captured crabs. The redinha trap was very efficient (86.4% and produced sustainable catches because the trapped crabs were legal-sized males (CW>60 mm, although some traps are lost or remain in the mangrove swamps and can cause pollution by introducing plastic debris. The fishery data were evaluated with a General Linear Model (GLM based on six factors: the characteristics of the crab fishermen, the time of capture (by month and year, the lunar phase, the productive sector and the reproductive period. The individual crab fishermen's empirical knowledge, the year of capture and the productive sector were the strongest influences on the crab catch per unit effort (CPUE. Differing extraction patterns were found in

  19. Testicle size as indicator of fertility in bulls

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    Prka Igor

    2014-01-01

    Full Text Available Male calves from the high value parents, bull fathers and bull dams, enter the selection for artificial insemination. After laboratory tests, the calves are taken to the center for artificial insemination, and after a stay in quarantine the are moved to a test station. At the age of twelve months they are measured for assessing the value of each calf exterior. One of the measures recorded was the testicle scope. On the basis of testicle size, it is possible to predict sperm production potential. For the determination of testicle size (testicular biometry, tapes or rulers were used. The aim of this work was to investigate the possible effect of testicle size on sperm production in young bulls used for artificial insemination. For that purpose there were used the data on circumference of testicles of one year old bulls just starting production of sperm, and then compared with certain semen quality parameters such as: volume of ejaculate and concentration and percentage of alive and progressively mobile spermatozoa. The investigation included all young bulls that started production in the period from 2010. to 2012., that is 36 bulls of various breeds (Simmental, Holstein Friesian, Montafon. After the testicle scope measuring in these bulls, there were observed the parameters of the sperm quality during the following one year period. The obtained results showed that the increased testicle size was followed by the increased average ejaculate quantity, in other words: 3.7 ml in group of bulls with testicle circumference below 30 cm, to 6.7 ml in bulls whose testicle circumference was over 40 cm. Also, the results showed that there was a correlation between the increased testicle size and the increased spermatozoa concentration. The values grow to testicle scope of 36 cm, and above that they were still high but with some oscillations. When it came to relation between testicle scope and the percentage of alive and progressively mobile spermatozoa, the

  20. Sequence check method for prenatal screening in the application of color Doppler ultrasound%顺序检查法在彩超产前筛查中的应用

    Institute of Scientific and Technical Information of China (English)

    王婷; 王东潮; 刁晖霞

    2012-01-01

    目的:探讨顺序检查法在彩超产前筛查中的应用价值.方法:对来香洲区人民医院进行产前筛查的孕周为16~40周的孕妇,按子宫-胎儿生物测量-胎儿结构-胎儿附属物的步骤进行彩超筛查,其中胎儿结构的检查顺序为颅脑、脊柱、骨及四肢、颜面、颈项、胸腔、腹腔、盆腔、心脏及大血管:胎儿附属物的检查顺序为胎盘、羊水、脐带.结果:6 728例胎儿中发生各种胎儿畸形85例(1.26%),超声筛查检出胎儿畸形79例,检出率为92.94%.结论:在彩超产前筛查中应用顺序检查法可提高胎儿畸形的检出率,是一种重要且可行的方法,值得推广应用.%Objective: To investigate the methods and application of the check method of Prenatal ultrasound screening. Methods: To our hospital for prenatal screening for gestational age was 16-40 weeks pregnant, according to the uterus - Fetal biometry - fetal structure - the steps of fetal ultrasound screening of appendages, of which the structure of the examination of fetal order; cranial brain, spine, bones and limbs, face, neck, chest, abdomen, pelvis, heart and great vessels; fetal appendage check the following order; the placenta, am-niotic fluid, umbilical cord. Results:subjects in the 6 728 cases, 85 cases of fetal malformations (1. 26% ) , ultrasound detected a total of 79 cases of fetal malformation, and the detection rate of 92. 94%. Conclusion: The application of ultrasound prenatal screening method can be examined in order to improve the detection rate of fetal malformations is an important and feasible, should be widely applied.

  1. Estimating Gestational Age in Late Presenters to Antenatal Care in a Resource-Limited Setting on the Thai-Myanmar Border.

    Directory of Open Access Journals (Sweden)

    Kerryn A Moore

    Full Text Available Estimating gestational age in resource-limited settings is prone to considerable inaccuracy because crown-rump length measured by ultrasound before 14 weeks gestation, the recommended method for estimating gestational age, is often unavailable. Judgements regarding provision of appropriate obstetric and neonatal care are dependent on accurate estimation of gestational age. We determined the accuracy of the Dubowitz Gestational Age Assessment, a population-specific symphysis-fundal height formula, and ultrasound biometry performed between 16 and 40 weeks gestation in estimating gestational age using pre-existing data from antenatal clinics of the Shoklo Malaria Research Unit on the Thai-Myanmar border, where malaria is endemic. Two cohorts of women who gave birth to live singletons were analysed: 1 250 women who attended antenatal care between July 2001 and May 2006 and had both ultrasound crown-rump length (reference and a Dubowitz Gestational Age Assessment; 2 975 women attending antenatal care between April 2007 and October 2010 who had ultrasound crown-rump length, symphysis-fundal measurements, and an additional study ultrasound (biparietal diameter and head circumference randomly scheduled between 16 and 40 weeks gestation. Mean difference in estimated newborn gestational age between methods and 95% limits of agreement (LOA were determined from linear mixed-effects models. The Dubowitz method and the symphysis-fundal height formula performed well in term newborns, but overestimated gestational age of preterms by 2.57 weeks (95% LOA: 0.49, 4.65 and 3.94 weeks (95% LOA: 2.50, 5.38, respectively. Biparietal diameter overestimated gestational age by 0.83 weeks (95% LOA: -0.93, 2.58. Head circumference underestimated gestational age by 0.39 weeks (95% LOA: -2.60, 1.82, especially if measured after 24 weeks gestation. The results of this study can be used to quantify biases associated with alternative methods for estimating gestational age in the

  2. The how and why of a $10 optical coherence tomography system

    Science.gov (United States)

    Leahy, M. J.; Wilson, C.; Hogan, J.; O'Brien, Peter; Dsouza, R.; Neuhaus, K.; Bogue, D.; Subhash, H.; O'Riordan, Colm; McNamara, Paul M.

    2016-03-01

    sufficient for many medical imaging and biometry applications.

  3. Astigmatism management in cataract surgery with Precizon® toric intraocular lens: a prospective study

    Science.gov (United States)

    Vale, Carolina; Menezes, Carlos; Firmino-Machado, J; Rodrigues, Pedro; Lume, Miguel; Tenedório, Paula; Menéres, Pedro; Brochado, Maria do Céu

    2016-01-01

    Purpose The purpose of this study was to evaluate the visual and refractive outcomes and rotational stability of the new aspheric Precizon® toric intraocular lens (IOL) for the correction of corneal astigmatism in cataract surgery. Setting Department of Ophthalmology, Hospital Geral de Santo António – Centro Hospitalar do Porto, EPE and Hospital de Pedro Hispano, Matosinhos, Portugal. Design This was a prospective clinical study. Patients and methods A total of 40 eyes of 27 patients with corneal astigmatism greater than 1.0 diopter (D) underwent cataract surgery with implantation of Precizon® toric IOL. IOL power calculation was performed using optical coherence biometry (IOLMaster®). Outcomes of uncorrected (UDVA) and best-spectacle corrected distance visual acuities (BCDVA), refraction, and IOL rotation were analyzed at the 1st week, 1st, 3rd, and 6th month’s evaluations. Results The median postoperative UDVA was better than preoperative best-spectacle corrected distance visual acuity (0.02 [0.06] logMAR vs 0.19 [0.20] logMAR, P<0.001). At 6 months, postoperative UDVA was 0.1 logMAR or better in 95% of the eyes. At last follow-up, the mean spherical equivalent was reduced from −3.35±3.10 D to −0.02±0.30 D (P<0.001) with 97.5% of the eyes within ±0.50 D of emmetropia. The mean preoperative keratometric cylinder was 2.34±0.95 D and the mean postoperative refractive cylinder was 0.24±0.27 D (P<0.001). The mean IOL rotation was 2.43°±1.55°. None of the IOLs required realignment. Conclusion Precizon® toric IOL revealed very good rotational stability and performance regarding predictability, efficacy, and safety in the correction of preexisting regular corneal astigmatism associated with cataract surgery. PMID:26855559

  4. Refractive cylinder outcomes after calculating toric intraocular lens cylinder power using total corneal refractive power

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    Davison JA

    2015-08-01

    . Consideration of measured posterior corneal astigmatism, rather than a population-averaged value, appears advantageous.Keywords: toric IOL, posterior corneal astigmatism, astigmatism, keratometry, biometry, TCRP

  5. Using existing questionnaires in latent class analysis: should we use summary scores or single items as input? A methodological study using a cohort of patients with low back pain

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    Nielsen AM

    2016-04-01

    Full Text Available Anne Molgaard Nielsen,1 Werner Vach,2 Peter Kent,1,3 Lise Hestbaek,1,4 Alice Kongsted1,4 1Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark; 2Center for Medical Biometry and Medical Informatics, Medical Center, University of Freiburg, Freiburg, Germany; 3School of Physiotherapy and Exercise Science, Curtin University, Perth, Australia; 4Nordic Institute of Chiropractic and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark Background: Latent class analysis (LCA is increasingly being used in health research, but optimal approaches to handling complex clinical data are unclear. One issue is that commonly used questionnaires are multidimensional, but expressed as summary scores. Using the example of low back pain (LBP, the aim of this study was to explore and descriptively compare the application of LCA when using questionnaire summary scores and when using single items to subgrouping of patients based on multidimensional data. Materials and methods: Baseline data from 928 LBP patients in an observational study were classified into four health domains (psychology, pain, activity, and participation using the World Health Organization’s International Classification of Functioning, Disability, and Health framework. LCA was performed within each health domain using the strategies of summary-score and single-item analyses. The resulting subgroups were descriptively compared using statistical measures and clinical interpretability. Results: For each health domain, the preferred model solution ranged from five to seven subgroups for the summary-score strategy and seven to eight subgroups for the single-item strategy. There was considerable overlap between the results of the two strategies, indicating that they were reflecting the same underlying data structure. However, in three of the four health domains, the single-item strategy resulted in a more nuanced description, in terms

  6. [Food and reproductive biology of Farlowella vittata (Siluriformes: Loricariidae) in Güejar River Basin, Orinoco, Colombia].

    Science.gov (United States)

    García-Alzate, Carlos A; Román-Valencia, César; Barrero, Ana M

    2012-12-01

    Neotropical fish live in streams with considerable spatial and temporal variability of their food items. Food availability depends on different factors such as discharge, channel morphology, physicochemical conditions and interactions with other species, as well as their food habits. On the other side, good food availability results in reproductive success. Because the study of those changes contributes to a better understanding of trophic interactions in fish populations, the present work describes and evaluates aspects of diet and reproduction of Farlowella vittata in Pringamosal Creek, Güejar River drainage, Orinoco River basin, Colombia. Five collecting expeditions were done during both high and low rain seasons of 2008 and 2009. Physical and chemical water parameters were measured, and fish were captured from several points along the total length of the 7km stream, to characterize their biometry and stomach contents. Our results showed that Pringamosal creek is a first order stream, about 3.5m wide and with an average depth of 1m in our study area. Dissolved oxygen values were 6.2mg/L during low water and 2.7mg/L during high water phase. The creek is classified as oligotrophic but with a tendency to eutrophication. A total of 130 fish samples were analyzed. Fishes were assigned to seven size range categories between 86.0 and 175.5mm standard length (SL). Stomach contents revealed that the diet of this species consisted mainly of algae (Bacillariophyceae) (84.6% Abundance Relative), but we observed a variation in the diet according to season; during low rainfall it feeds on phytoplankton (86.47% A.R.) and during high rainfall on zooplankton as well as plant material and organic material (0.685% A.R. and 18.83% A.R., respectively). A Kruskal-Wallis ANOVA showed statistically significant differences in food items between sexes. The condition factor (K) indicated that the species was well fed. Size at sexual maturity was 154mm SL for males and 124mm SL for

  7. Características morfométricas de frutos e sementes e germinação de Thespesia populnea Morphometric characteristics of fruits and seeds and germination of Thespesia populnea

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    Celene de Albuquerque Camara

    2009-01-01

    Full Text Available Thespesia populnea (L. Soland. ex Correa é espécie arbórea pertencente à família Malvaceae, característica dos estágios iniciais da sucessão, com potencial para uso em reflorestamento visando à recuperação de áreas degradadas, particularmente em regiões costeiras. O presente trabalho foi desenvolvido durante no período de 2005 e 2006, com objetivo de estudar a biometria e morfologia de frutos e sementes dessa espécie, bem como avaliar diferentes tratamentos para acelerar e/ou uniformizar a germinação das sementes, nas temperaturas de 25 e 30 ºC. O fruto é esquizocarpico, indeiscente, contendo, em média, 8 sementes angulares, dotadas de estrias e pelos em toda a superfície, com 6,3 mm de comprimento por 4,3 mm de largura, em média. O embrião é do tipo axial plicado, com eixo hipocótilo-radícula cilíndrico. A imersão das sementes em ácido sulfúrico concentrado por 30 minutos foi eficiente na superação da dormência dessa espécie, promovendo aumento na porcentagem e velocidade de germinação a 30 ºC.Thespesia populnea (L. Soland. ex Correa is a tree species of the Malvaceae family typical of the initial period of plant succession, with high potential for reforestation and recovery of degraded areas, particularly in coastal regions. This work evaluated the biometry and morphology of fruits and seeds of this species, as well as treatments to speed up and/or to synchronize seed germination at temperatures of 25 and 30 ºC. The results showed that the fruit is schizocarpic with eight angular seeds with 6,3 mm length and 4,3 mm width. The embryo is axial folded, with a cylindrical hypocotyl-radicle axis. The immersion of seeds in a concentrated solution of sulfuric acid for 30 minutes was efficient to overcome the dormancy of this species as well as to improve and to speed up the germination percentage. The temperature of 30 ºC conferred maximum germination.

  8. Mid-term outcomes of patients with PCI prior to CABG in comparison to patients with primary CABG

    Directory of Open Access Journals (Sweden)

    Sandra Eifert

    2010-06-01

    Full Text Available Sandra Eifert1, Helmut Mair1, Anne-Laure Boulesteix2, Eckehard Kilian1, Martin Adamczak1, Bruno Reichart1, Peter Lamm11Department of Cardiac Surgery, 2Department of Medical Informatics, Biometry and Epidemiology (IBE, Ludwig Maximilians University, Munich, GermanyAbstract: The number of percutaneous coronary interventions (PCI prior to coronary artery bypass grafting (CABG increased drastically during the last decade. Patients are referred for CABG with more severe coronary pathology, which may influence postoperative outcome. Outcomes of 200 CABG patients, collected consecutively in an observational study, were compared (mean follow-up: 5 years. Group A (n = 100, mean age 63 years, 20 women had prior PCI before CABG, and group B (n = 100, mean age 66, 20 women underwent primary CABG. In group A, the mean number of administered stents was 2. Statistically significant results were obtained for the following preoperative criteria: previous myocardial infarction: 54 vs 34 (P = 0.007, distribution of CAD (P < 0.0001, unstable angina: 27 vs 5 (P < 0.0001. For intraoperative data, the total number of established bypasses was 2.43 ± 1.08 vs 2.08 ± 1.08 (P = 0.017, with the number of arterial bypass grafts being: 1.26 ± 0.82 vs 1.07 ± 0.54 (P = 0.006. Regarding the postoperative course, significant results could be demonstrated for: adrenaline dosage (0.83 vs 0.41 mg/h; [p is not significant (ns] administered in 67 group A vs 47 group B patients (P = 0.006, and noradrenaline dosage (0.82 vs 0.87 mg/h; ns administered in 46 group A vs 63 group B patients (P = 0.023, CK/troponine I (P = 0.002; P < 0.001, postoperative resuscitation (6 vs 0; P = 0.029, intra aortic balloon pump 12 vs 1 (P = 0.003, and 30-day mortality (9% in group A vs 1% in group B; P = 0.018. Clopidogrel was administered in 35% of patients with prior PCI and in 19% of patients without prior PCI (P = 0.016. Patients with prior PCI presented for CABG with more severe CAD. Morbidity

  9. Comparison of two optical biometers in intraocular lens power calculation

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    Sheng Hui

    2014-01-01

    Full Text Available Aims: To compare the consistency and accuracy in ocular biometric measurements and intraocular lens (IOL power calculations using the new optical low-coherence reflectometry and partial coherence interferometry. Subjects and Methods: The clinical data of 122 eyes of 72 cataract patients were analyzed retrospectively. All patients were measured with a new optical low-coherence reflectometry system, using the LENSTAR LS 900 (Haag Streit AG/ALLEGRO BioGraph biometer (Wavelight., AG, and partial coherence interferometry (IOLMaster V.5.4 [Carl Zeiss., Meditec, AG] before phacoemulsification and IOL implantation. Repeated measurements, as recommended by the manufacturers, were performed by the same examiner with both devices. Using the parameters of axial length (AL, corneal refractive power (K1 and K2, and anterior chamber depth (ACD, power calculations for AcrySof SA60AT IOL were compared between the two devices using five formulas. The target was emmetropia. Statistical analysis was performed using Statistical Package for the Social Sciences software (SPSS 13.0 with t-test as well as linear regression. A P value < 0.05 was considered to be statistically significant. Results: The mean age of 72 cataract patients was 64.6 years ± 13.4 [standard deviation]. Of the biometry parameters, K1, K2 and [K1 + K2]/2 values were significantly different between the two devices (mean difference, K1: −0.05 ± 0.21 D; K2: −0.12 ± 0.20 D; [K1 + K2]/2: −0.08 ± 0.14 D. P <0.05. There was no statistically significant difference in AL and ACD between the two devices. The correlations of AL, K1, K2, and ACD between the two devices were high. The mean differences in IOL power calculations using the five formulas were not statistically significant between the two devices. Conclusions: New optical low-coherence reflectometry provides measurements that correlate well to those of partial coherence interferometry, thus it is a precise device that can be used for the

  10. Astronaut Preflight Cardiovascular Variables Associated with Vascular Compliance are Highly Correlated with Post-Flight Eye Outcome Measures in the Visual Impairment Intracranial Pressure (VIIP) Syndrome Following Long Duration Spaceflight

    Science.gov (United States)

    Otto, Christian; Ploutz-Snyder, R.

    2015-01-01

    The detection of the first VIIP case occurred in 2005, and adequate eye outcome measures were available for 31 (67.4%) of the 46 long duration US crewmembers who had flown on the ISS since its first crewed mission in 2000. Therefore, this analysis is limited to a subgroup (22 males and 9 females). A "cardiovascular profile" for each astronaut was compiled by examining twelve individual parameters; eleven of these were preflight variables: systolic blood pressure, pulse pressure, body mass index, percentage body fat, LDL, HDL, triglycerides, use of anti-lipid medication, fasting serum glucose, and maximal oxygen uptake in ml/kg. Each of these variables was averaged across three preflight annual physical exams. Astronaut age prior to the long duration mission, and inflight salt intake was also included in the analysis. The group of cardiovascular variables for each crew member was compared with seven VIIP eye outcome variables collected during the immediate post-flight period: anterior-posterior axial length of the globe measured by ultrasound and optical biometry; optic nerve sheath diameter, optic nerve diameter, and optic nerve to sheath ratio- each measured by ultrasound and magnetic resonance imaging (MRI), intraocular pressure (IOP), change in manifest refraction, mean retinal nerve fiber layer (RNFL) on optical coherence tomography (OCT), and RNFL of the inferior and superior retinal quadrants. Since most of the VIIP eye outcome measures were added sequentially beginning in 2005, as knowledge of the syndrome improved, data were unavailable for 22.0% of the outcome measurements. To address the missing data, we employed multivariate multiple imputation techniques with predictive mean matching methods to accumulate 200 separate imputed datasets for analysis. We were able to impute data for the 22.0% of missing VIIP eye outcomes. We then applied Rubin's rules for collapsing the statistical results across our 200 multiply imputed data sets to assess the canonical

  11. Morfologia de frutos, sementes e plântulas de castanheira (Terminalia catappa L. - COMBRETACEAE Morphology of the fruit, the seed and the seedlings of chestnut tree (Terminalia catappa L. - COMBRETACEAE

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    Silvia de Azevedo Ivani

    2008-06-01

    Full Text Available O trabalho foi realizado com o objetivo de descrever morfologicamente os frutos, sementes e plântulas de castanheira. Foi feita a biometria dos frutos e das sementes e sua caracterização quanto à forma, por meio de mensurações com paquímetro e observações realizadas em estereomicroscópio com câmara clara. Os frutos de castanheira são carnosos, indeiscentes, do tipo nucóide, glabros, de coloração verde a vinácea, projeção das nervuras carpelares externamente evidentes, com epicarpo delgado, mesocarpo carnoso e esponjoso de coloração vinácea, com feixes vasculares conspícuos em corte transversal. Geralmente, cada fruto contém apenas uma semente. As sementes são exalbuminosas, de formas alongadas e cilíndricas, recobertas por endocarpo rígido de coloração marrom; possuem cerca de 2,5cm, 0,7cm e 0,7cm, de comprimento, largura e espessura, respectivamente. A germinação das sementes de castanheira é epígea, e a plantula é fanerocotiledonar.The work was carried out with the objective of describing morphologically the fruits, seeds and seedlings of chestnut tree. It was made the biometry of the fruits and seeds with a digital pachymeter and its characterization in relation to the shape, in stereomicroscope with clear chamber. It can be evidenced that the chestnut tree fruits are fleshly, indehiscent, nucoid, glabrous, from green to purple coloration, with evident projection of the carpel ribbings, with a fleshly and spongy epicarp and mesocarp, of purple color, with conspicuous vascular bundle in transversal cut. Generally, it has a seed per fruit. The seeds are unalbuminous, of prolongated and cylindrical shape and recovered with a rigid endocarp of brown coloration. The seeds possess about 2,5; 0,7 and 0,7 cm, of length, width and thickness, respectively. The germination of the seeds of chestnut tree is epigeal and the seedling is fanerocotyledonary.

  12. Risk factors for severe proliferative diabetic retinopathy%不同病程糖尿病增殖型视网膜病变危险因素对比研究

    Institute of Scientific and Technical Information of China (English)

    王月欣; 陈松; 段红涛; 孔佳慧; 董蒙; 李泽东; 王昀

    2015-01-01

    Objective To investigate the different risk factors and biological ocular structures between the diabetes duration less than 10 years and more than 10 years in type 2 diabetes with severe proliferative diabetic retinopathy (PDR).Methods The clinical data of 186 severe PDR patients were analyzed retrospectively.Systemic condition,results of laboratory examination,fundus examination and the characteristics of ocular biometry structures that collected from group A (61 type 2 diabetic patients with diabetes less than 10 years) and group B (125 type 2 diabetic patients with diabetes more than 10 years) were comparatively analyzed.Ocular biometry,including axial length (AL),anterior chamber depth (ACD) and lens thickness (LT) were comparatively analyzed among group A,group B and group C (100 type 2 diabetic patients without DR).Factors with P<0.05 were included in multivariate logistic regression models.Results In the systemic factors,there were significant differences of the diagnosis age,use of insulin,fasting plasma glucose and postprandial blood glucose between group A and group B (P <0.05).In the ocular factors,there were significant differences of AL,ACD and LT between the severe PDR and control groups (P <0.05).Type 2 diabetic patients occurred severe PDR with diabetes duration less than 10 years attended to have a shorter AL than diabetes duration more than 10 years,the differences was significant (P <0.05).Multivariate Logistic regression analysis showed the diagnosis age and axial length were independent risk factors (OR=0.366,2.909,P <0.05).Conclusions There are differences risk factors between the diabetes duration less than 10 years and more than 10 years in type 2 diabetes with severe PDR.The diagnosis age and axial length play an important role in type 2 diabetes with severe PDR less than 10 years since diagnosis.%目的 对比分析不同病程2型糖尿病(DM)并发严重增殖型糖尿病视网膜病变(PDR)的全身危险因素

  13. Ocular biological structures and relevant risk factors in the occurrence of diabetic retinopathy in diabetes mellitus patients%糖尿病患者发生视网膜病变的眼部生物结构特征及其危险因素分析

    Institute of Scientific and Technical Information of China (English)

    蒋晶晶; 黎晓新; 元力; 纪立农; 吴夕

    2012-01-01

    目的 探讨糖尿病患者发生视网膜病变的眼部生物结构特征及其危险因素.方法 回顾性病例系列研究.收集118例病程超过10年的2型糖尿病患者临床资料进行回顾性分析,包括患者全身和实验室检查情况、眼底改变、糖尿病视网膜病变(DR)程度、相干光生物测量仪及屈光检测资料.同时以50例非糖尿病性白内障患者的临床资料进行对比.根据病变程度,将糖尿病患者分为3组:0组无DR,1组轻中度DR,2组威胁视力DR.采用广义估计方程模型控制来自同一患者双眼数据的关联性,将眼部生物结构指标包括眼轴长度、前房深度、角膜直径、角膜曲率及屈光度数等变量指标分别纳入Logistic回归分析.结果 除外全身因素,眼部各变量因素分析,显示118例糖尿病患者的眼轴长度为(23.22±1.46)mm,前房深度为(3.01 ±0.42)mm,角膜直径为(11.60 ±0.48)mm,角膜曲率为(44.84±1.44)D;与对照组眼轴长度(23.87±1.55)mm、前房深度(2.59 ±0.41)mm、角膜直径(11.59 ±0.41)mm及角膜曲率(44.54 ±1.71)D比较,其中眼轴长度和前房深度差异有统计学意义(OR=1.358,5.955;P<0.05).糖尿病患者3组间比较,显示眼轴长度越短、前房深度越浅,DR发生和发展的危险性越大(OR=16.869,7.248,6.577;P<0.05),其中DR分型和黄斑水肿类型的危险性尤为突出.远视眼发生严重DR病变的危险性显著增加(OR=1.301,95% CI=1.044 ~1.621,P<0.05).结论 病程10年以上的2型糖尿病患者中,眼部危险因素主要为眼轴长度和前房深度,其具有促使DR发生及病情进展的作用.%Objective To investigate the characteristics and risk factors of biological ocular structures in the development of diabetic retinopathy in diabetes mellitus (DM) patients.Methods Retrospective case series study.Systemic condition,results of laboratory examination,fundus examination,refractive status and ocular biometry measured by IOL Master

  14. 四种不同方法测量角膜曲率比较研究%Comparison and evaluation of four different techniques of keratometric measurements

    Institute of Scientific and Technical Information of China (English)

    李炳震; 梁晨; 冬雪川; 孙岩秀; 郝燕生

    2014-01-01

    Objective To compare the corneal curvature (K1,K2) measurements obtained with Lenstar with those measured with IOL-Master,keratometer and Pentacam.Methods In this prospective nonrandomized clinical study,total 141 eyes of 84 subjects were enrolled.K1 and K2 were measured with Lenstar,IOL-Master,keratometer and Pentacam,separately.The differences between two methods were assessed using the paired t test,its correlation was evaluated by Pearson coefficient,and the agreement analysis was performed by Bland-Alrman plots.Results K1 value was (43.59±1.69)D,(43.54±1.73)D,(43.55±1.78)D and (43.30±2.08)D,and K2 value was (44.55±1.66)D,(44.61±1.72)D,(44.27±1.74)D and (44.24±2.02)D based on Lenstar,IOL-Master,keratometer and Pentacam,respectively.All comparisons showed a non-significant difference,except for the comparison of K2 measurements using the Lenstar and keratometer (P <0.001).All biometry measurements revealed good linear correlation (r =0.899-0.980,P <0.001).The Bland-Altman showed that the four devices had non-comparable results for corneal curvature measurement.Conclusions Lenstar can provide noncontact biometry measurements easily and safely,which are welcome by patients.It is important to note in clinical practice,that corneal curvature values acquired by these devices are not directly interchangeable.%目的 比较Lenstar与IOL-Master、角膜曲率计及Pentacam在测量角膜曲率(K1、K2)时的差异,分析4种方法的一致性,为Lenstar的临床应用提供依据.方法 前瞻性临床研究.对2011年12月至2013年3月在北医三院就诊的患者共纳入受试者84例141只眼,分别应用Lenstar与IOL-Master、角膜曲率计测试141只眼及Pentacam测试59只眼,测量受试者角膜曲率(K1,K2)值.采用配对t检验对两组测量结果的差异进行比较,不同测量仪器所得数据的相关性采用Pearson相关性分析,两种方法测量结果的一致性采用Bland-Altman分析.结果 Lenstar

  15. Benzocaine hydrochloride anesthesia in carp (Cyprinus carpio / Cloridrato de benzocaína na anestesia de carpas (Cyprinus carpio

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    Marco Antonio da Rocha

    2008-08-01

    Full Text Available Fish anesthesia is indicated to allow the accomplishment of several procedures such as biometry, tagging, transportation, physical examination, surgical procedures, and reproductive management. The doses of benzocaine in the carp anesthesia (Cyprinus carpio were determined, carrying through six phases with 40 fish each. The average weight of carps in each phase was of 147.45±7.99g, 173.32±9.15g, 191.26±14.05g, 269.84±19.24g, 285.25±17.97g, and 300.91±16.45g. In each phase, fish had been captured and placed in four containers each one with different concentrations of benzocaine (100, 140, 180 and 220 mg/L respectively. The induction time (IT was registered for each fish and after that the anesthetic induction biometry was performed. In each phase the minimal dose of benzocaine was calculated using the Linear Response Plateau (LRP, in a model that included dose and IT. The LRP was calculated for each phase: 125.79mg/L in 114.33s, 155.68mg/L in 115.75s, 145.33mg/L in 102.52s, 149.50mg/L in 140.53s, 166.42mg/L in 116.15s, and 158.34mg/L in 102.00s. The optimal dose was related with the weight, resulting in the equation: dose=114.230+0.158 x weight (r2=0.53. The equation shows that an increase in the weight in 1g corresponds to an increase of 0.158 mg/L in the dose of benzocaine hydrochloride for carps.A anestesia em peixes é indicada para permitir a realização de diversos procedimentos como: biometria, marcação, transporte, exame físico, procedimentos cirúrgicos e manejo reprodutivo. Determinou-se a dose de benzocaína na anestesia de carpas (Cyprinus carpio, com a realização de seis etapas com 40 peixes cada. O peso médio das carpas em cada etapa foi de 147,45±7,99g, 173,32±9,15g, 191,26±14,05g, 269,84±19,24g, 285,25±17,97g, e 300,91±16,45g. Em cada etapa, os peixes foram capturados e colocados em quatro recipientes com benzocaína nas concentrações de 100, 140, 180 e 220 mg/L respectivamente. O tempo de indução (TI foi

  16. Initial development of pumpkin and squash cultivars submitted to salt stress=Desenvolvimento inicial de cultivares de abóboras e morangas submetidas ao estresse salino

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    Francisco de Assis de Oliveira

    2014-08-01

    Full Text Available Irrigation with saline water is a challenge both for scientists and farmers. The success of utilizing such water depends on crop tolerance to salinity. A trial was carried out in a greenhouse at UFERSA, Mossoró, RN, Brazil, aiming at evaluating the effects of irrigation water salinity on initial growth and characteristics related to leaf anatomy in cultivars of pumpkin (Cucurbita moschata D. and moranga (Cucurbita maxima D.. The experiment was arranged in a completely randomized design with a 4 x 2 factorial scheme and three replications. Treatments resulted from the combinations of four genotypes (Pumpkin Xingó jacarezinho “casca grossa”, Pumpkin mini Paulista Isabela, Moranga Crioula Pataka and Moranga Coroa with two irrigation water salinity levels (0.5 and 3.5 dS m-1. Plants were collected 40 days after seeding. The following variables were analyzed: main stem length, root collar diameter, leaf number, leaf area, leaf dry mass of, stem dry mass, shoot dry mass, specific leaf area and leaf area ratio. Initial growth and leaf biometry in pumpkin and moranga plants were influenced by irrigation water salinity, which response was cultivar dependent. Genotypes Moranga Crioula pataka and Moranga Coroa showed larger tolerance to irrigation water salinity=O uso de água salina na irrigação é um desafio para os pesquisadores e produtores rurais. O êxito da utilização destas águas é dependente da tolerância das plantas cultivadas à salinidade. O experimento foi desenvolvido em casa de vegetação na UFERSA, Mossoró, RN, com o objetivo de avaliar o efeito da salinidade da água de irrigação sobre o desenvolvimento inicial e as características relacionados à biometria foliar de cultivares de abóboras e morangas. O experimento foi instalado no delineamento inteiramente casualizado, com três repetições, em esquema fatorial 4 x 2. Os tratamentos resultaram da combinação de quatro genótipos (Abóbora Xingó jacarezinho

  17. Avaliação de germinação e dormência de ecótipos de arroz-vermelho Seed germination and dormancy of red rice ecotypes

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    A.M.L. Schwanke

    2008-01-01

    Full Text Available Este trabalho teve como objetivo avaliar aspectos relativos à germinação e dormência de 16 ecótipos de arroz-vermelho provenientes de lavouras comerciais dos Estados do Rio Grande do Sul e Santa Catarina. Os ecótipos foram estudados e comparados com os cultivares BR-IRGA 409, BR-IRGA 410, IRGA 417 e El Paso L 144, em condições de casa de vegetação. Os experimentos foram realizados durante o ano agrícola 2001/02, na Embrapa Clima Temperado - Estação Experimental de Terras Baixas, no município de Capão do Leão, RS. Foram avaliadas em laboratório a biometria e a massa de mil grãos, além de testes de germinação e dormência aos 30, 60, 90, 120 e 150 dias após a colheita dos genótipos. Os resultados evidenciaram grande variabilidade nas características morfofisiológicas dos ecótipos estudados. Os ecótipos de arroz-vermelho avaliados, procedentes de lavouras de arroz irrigado do RS e SC, apresentaram alta variabilidade quanto às características das sementes e à intensidade e duração da dormência. Alguns ecótipos avaliados apresentaram sementes com período de dormência maior que 150 dias após a colheita. Os resultados deste trabalho confirmam também que o êxito no manejo do arroz-vermelho em lavouras infestadas depende da recomendação e adoção por parte dos produtores não de medidas isoladas, mas de um grupo de medidas complementares que, quando adotadas conjuntamente, permitem minimizar os problemas com o arroz-vermelho.The objective of this work was to evaluate aspects related to the phenotypic characterization of red rice ecotypes collected in the states of Rio Grande do Sul and Santa Catarina. The ecotypes were studied and compared to the commercial rice cultivars BR-IRGA 409, BR-IRGA 410, IRGA 417, and El Paso L 144. In the laboratory experiment, seed biometry, 1000 seed-weight and seed germination and dormancy 30, 60, 90, 120, and 150 days after harvesting were evaluated. The red rice ecotypes from the

  18. BIOMETRIA, DORMÊNCIA E VIABILIDADE DE SEMENTES DE SENNA MACRANTHERA

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    Marilda Torres Capucho

    2012-12-01

    Full Text Available With the aim of study biometry, dormancy and viability of Sena macranthera seeds. The studies were accomplished out at the Seed Laboratory from the Center of Agrarian Sciences of Federal University of Espírito Santo (CCA-UFES, and on the farm Tecnotruta, in the Serra do Caparaó. Were carried two experiments in statistical completely randomized, with four replications of 25 seeds. At first, the treatments used were: immersion in water at 70 ºC for 1, 2 and 3 minutes; immersion in water at 90 ºC for 1, 2, 3, 10 and 20 minutes; immersion in boiling water (97 ºC to 5, 10 and 15 minutes; immersion in boiling water (97 ºC until cool; immersion in concentrated sulfuric acid (98% to 10, 15, 20, 30, 40 and 60 minutes, mechanical scarification and intact seeds as control. In the second, the seeds were packed in metalized BOPP packaging and stored in the fridge and in the natural environment in laboratory conditions in the Serra do Caparaó. The germination and vigor were evaluated of 12 months. The seeds present impermeability of integument; that mechanical and chemical scarification with sulfuric acid are more efficient to overcome the dormancy, with germination percentage higher than 88%; the viability of the seeds remains unchanged in the fridge and in the natural environment in a laboratory conditions in the Serra do Caparaó for 12 months. Objetivou-se no presente trabalho estudar a biometria, dormência e viabilidade de sementes de Senna macranthera. O estudo foi conduzido no Laboratório de Sementes do Centro de Ciências Agrárias da Universidade Federal do Espírito Santo (CCA-UFES, e na Fazenda Tecnotruta, na Serra do Caparaó. Foram conduzidos dois experimentos em um delineamento inteiramente casualizado com quatro repetições de 25 sementes. No primeiro, os tratamentos utilizados foram: imersão em água a 70 oC por 1, 2 e 3 minutos; água a 90 oC por 1, 2, 3, 10 e 20 minutos; água a 97 oC por 5, 10 e 15 minutos; água a 97 oC at

  19. Analysis of malignancies in patients after heart transplantation with subsequent immunosuppressive therapy

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    Rivinius R

    2014-12-01

    Full Text Available Rasmus Rivinius,1 Matthias Helmschrott,1 Arjang Ruhparwar,2 Bastian Schmack,2 Berthold Klein,2 Christian Erbel,1 Christian A Gleissner,1 Mohammadreza Akhavanpoor,1 Lutz Frankenstein,1 Fabrice F Darche,1 Dierk Thomas,1 Philipp Ehlermann,1 Tom Bruckner,3 Hugo A Katus,1 Andreas O Doesch11Department of Cardiology, Angiology and Pneumology, 2Department of Cardiac Surgery, 3Institute for Medical Biometry and Informatics, University of Heidelberg, Heidelberg, GermanyObjective: The aim of this study was to analyze the distribution of malignancies in patients after heart transplantation (HTX and to evaluate the risk factors including immunosuppressive therapy with regard to the development of malignancies and survival. Special emphasis was placed on the effects of a mammalian target of rapamycin (mTOR containing immunosuppressive regimen.Methods: A total of 381 patients (age ≥18 years receiving HTX were included in the present analysis. All patients were followed-up at the University of Heidelberg Heart Center, Heidelberg, Germany. Data were retrieved from the Heidelberg Registry for Heart Transplantation being collected between 1989 and 2014. According to center standard, all patients received induction therapy with anti-thymocyte globulin guided by T-cell monitoring since 1994. The initial immunosuppressive regimen consisting of cyclosporine A (CsA and azathioprine (AZA was replaced by CsA and mycophenolate mofetil (MMF in 2001 and by tacrolimus (TAC and MMF in 2006. Additionally, mTOR inhibitors (everolimus/sirolimus were applied since 2003.Results: Mean recipient age at HTX was 51.2±10.5 years and the mean follow-up period after HTX was 9.7±5.9 years. During follow-up, 130 patients developed a neoplasm (34.1% of total. Subgroup analysis revealed 58 patients with cutaneous malignancy only (15.2%, 56 patients with noncutaneous malignancy only (14.7%, and 16 patients with both cutaneous and noncutaneous malignancy (4.2%. Statistically significant

  20. Componentes oculares em anisometropia The ocular components in anisometropia

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    David Tayah

    2007-06-01

    with anisometropia of two or more diopters, assisted at the Ophthalmological Clinic from "Hospital das Clínicas da Faculdade de Medicina" of São Paulo University. All participants were submitted to ophthalmologic examination which included objective and subjective cycloplegic refratometry, keratometry and ultrasonic biometry. RESULTS: No significant difference between measures of ocular components of the eyes with higher and lower ametropias was observed. The eyes with lower ametropia presented the same significant correlations observed in emmetropic eyes: of refraction with anterior segment length and axial length, and of the axial length with corneal power and vitreous length. The eyes with higher ametropia presented significant correlation of refraction with the axial length and of the axial length with vitreous length. Furthermore, we observed in both eyes, significant correlation of the power of the crystalline lens with the anterior chamber depth. CONCLUSION: The eyes with lower ametropia presented correlations more frequently observed in emmetropia. The eyes with higher ametropia did not present the same correlations observed in emmetropic eyes.

  1. Biometric Calculation and Refractive Results. A Study of 250 Cases of Patients Operated for Cataract Cálculo biométrico y resultados refractivos. Estudio de 250 casos operados de catarata

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    Inés Benita Zamora Galindo

    2012-02-01

    >Objective: To evaluate the biometric calculation and postoperative refraction in patients who underwent cataract surgery. Methods: A descriptive study was conducted in the Ophthalmology Center of the State of Anzoategui in Venezuela. It included 250 patients who underwent cataract surgery with previous refraction, keratometry, biometry and intraocular lens power calculation. After surgery, the following parameters were determined: biometrically calculated expected refraction, postoperative refractive error, uncorrected visual acuity and postoperative correction. Results: In general, females and patient between 60 and 69 years old predominated. The most commonly recorded value for keratometry ranged from 43 to 44 D. For axial length, values ranged from 22 to 24 mm. Most commonly used intraocular lenses were from 16 to 20 diopters and from 21 to 25 diopters. The largest percent of expected refraction was obtained in the group from 0.00 to 0, 50. Refractive error was predominant from 0.50 to 1.00. In the refraction performed without glasses one month after surgery, more than half of patients had vision between 20/30 and 20 / 25. Conclusions: We demonstrated the effectiveness of intraocular lens calculation prior to cataract surgery.

  2. Seed morphology of Iberian species of the genus Aconitum L.

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    Molero, Julià

    1990-12-01

    Full Text Available A biometric-morphological study of' the seeds of the taxons of the genus Aconitum L. occurring in the Iberian peninsula is given. The following features are treated: 1 arrangement of the seeds on the follicle, 2 definition of the parameters (general shape and ornamentation of the episperm, 3 biometry, and 4 description of the seeds of the Iberian taxa. Microcharacteristics related to the seed coat, shape and ornamentation or the insertion base (hilum and surrounding cells have been found most useful in differentiating the taxa; furthermore, they may provide more phylogenetic information than other features. The results given agree generally with those reported by other authors (Seitz, 1969; Cappeleti & Poldini, 1984 but some important discrepancies have been noted with reference to seminal morphology, particularly episperm ornamentation in the species A. anthora. A. napellus s.l., A. burnatii and A. vulparia subsp. ranunculifolium. Seminal polymorphism is frequently observed in different geographically isolated colonies or the same species or subspecies. both in the Iberian Peninsula and in Central and Southern Europe. We conclude that polymorphism is further evidence of the phenotypical flexibility of this genus, probably owing to genetic drift in the populations. This flexibility is particularly important in colonizing species or wide ecological valence (A . napellus, s. l.; A. vulparia s.l..

    [ca] Es presenta un estudi morfològica-biomètric de les granes dels tàxons del gènere Aconitum L. presents a la Península Ibèrica. Es tracten aspectes que fan referència a: 1 disposició de les granes al fol-licle. 2 definició de paràmetres (forma general i ornamentació de l'episperma, 3 biometria i 4 descripció de les granes dels representants ibèrics. Els microcaràcters relacionats fonamentalment amb el relleu epispèrmic, forma i ornamentació de la base d'inserció (hílum i

  3. BIOMETRIA DE MUDAS DE CAJUEIRO ANÃO IRRIGADAS COM ÁGUAS SALINAS E USO DE ATENUADORES DO ESTRESSE SALINO

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    Eliésia Carla de Medeiros Torres

    2014-06-01

    Full Text Available A salinidade hídrica é fator de estresse que altera o crescimento de mudas de frutíferas. Objetivou-se avaliar o crescimento de mudas de cajueiro anão precoce em substratos irrigados com águas salinas e adição de biofertilizante bovino e cobertura com biomassa vegetal no Seridó Paraibano. O experimento foi instalado em delineamento em blocos casualizados, com três repetições, em arranjo fatorial 5 x 2 x 2, correspondente a cinco níveis de salinidade da água de irrigação (0,5; 3,5; 6,5; 9,5 e 12,5 dS m-1, no solo sem e com biofertilizante bovino, numa alíquota de 0,2 dm-3 por planta, sem e com cobertura morta com 3 cm de casca de arroz. As taxas de crescimento absoluto e relativo em altura, em diâmetro caulinar, número de folhas, área foliar, comprimento da raiz e fitomassa fresca do cajueiro anão precoce foram influenciados negativamente pela salinidade da água de irrigação. O biofertilizante mitigou os efeitos depressivos dos sais no crescimento absoluto das plantas irrigadas com água de salinidade até 3,5 dS m-1. O uso simultâneo do biofertilizante e cobertura morta foi eficiente na redução dos efeitos dos sais nas plantas irrigadas com águas de 3,5 e 6,5 dS m-1, promovendo aumento no número de folhas. O biofertilizante incrementou a fitomassa fresca total das plantas irrigadas com água de maior condutividade elétrica.Palavra-chave: agroecologia, biofertilizante, crescimento, fruticultura, salinidade. SEEDLING OF DWARF CASHEW BIOMETRY IRRIGATED WITH SALINE WATER AND SALT STRESS ATTENUATORS USE   ABSTRACTThe water salinity is a stress factor that alters the growth of fruit seedlings. This study aimed to evaluate the growth of dwarf cashew seedlings in substrates irrigated with saline water and bovine bio fertilizer addition and cover with vegetable biomass in Seridó, Paraiba. The experiment was arranged in a randomized block design with three replications in a factorial 5 x 2 x 2, corresponding to five

  4. Combined treatment with olmesartan medoxomil and amlodipine besylate attenuates atherosclerotic lesion progression in a model of advanced atherosclerosis

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    Sievers P

    2015-07-01

    Full Text Available Philipp Sievers,1 Lorenz Uhlmann,2 Sevil Korkmaz-Icöz,3 Christian Fastner,1 Florian Bea,1 Erwin Blessing,1 Hugo A Katus,1 Michael R Preusch11Department of Internal Medicine III, 2Institute of Medical Biometry and Informatics, 3Department of Cardiac Surgery, University of Heidelberg, Heidelberg, GermanyIntroduction: Besides their blood pressure-lowering effects, olmesartan medoxomil and amlodipine besylate exhibit additional anti-inflammatory mechanisms in atherosclerosic disease. Most of the studies investigating the effects of atherosclerosis focused on early atherosclerotic lesions, whereas lesions in human disease, at the time when medical treatment is started, are already well established. Therefore, we set up a model of advanced atherosclerosis and investigated the effects of olmesartan medoxomil, amlodipine besylate, and the combination of both on atherosclerotic lesion size and lesion composition.Materials and methods: Olmesartan medoxomil (1 mg/kg/day, amlodipine besylate (1.5 mg/kg/day, and the combination of both was added to chow and was fed to apolipoprotein E-deficient (ApoE-/- mice at 25 weeks of age. Mice were sacrificed after 25 weeks of drug administration and perfused with formalin. Innominate arteries were dissected out and paraffin embedded. Serial sections were generated, and lesion sizes and their composition – such as minimal thickness of the fibrous cap, size of the necrotic core, and presence of calcification – were analyzed. Electrophoretic mobility shift assays were used to detect DNA-binding activity of the transcription factor nuclear factor-kappa B (NF-κB in aortic tissue.Results: Treatment with the combination of olmesartan medoxomil and amlodipine besylate led to a significant reduction in atherosclerotic lesion size in ApoE-/- mice (olmesartan medoxomil/amlodipine besylate: 122,277±6,795 µm2, number [n]=14; versus control: 177,502±10,814 µm2, n=9; P<0.001. Treatment with amlodipine besylate (n=5 alone

  5. TESTICULAR BIOMETRIC CHARACTERISTICS IN SANTA INÊS SHEEP SUBMITTED TO PROTEIN SUPPLEMENTATION AND ANTI-HELMINTH TREATMENTS CARACTERÍSTICAS BIOMÉTRICAS TESTICULARES EM CARNEIROS SANTA INÊS SUBMETIDOS A DIFERENTES REGIMES DE SUPLEMENTAÇÃO PROTÉICA E TRATAMENTOS ANTI-HELMÍNTICOS

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    Helder Louvandini

    2008-10-01

    Full Text Available

    Biometric testicular traits were evaluated on 24 entire male Santa Inês lambs, with mean initial weight of 24.5 kg ± 2.88. These were distributed in four treatments (n=6: HPv (animals drenched + high protein concentrate, HPn: (animals not drenched + high protein concentrate, LPv: (animals drenched + low protein concentrate, LPn: (animals not drenched + low protein concentrate for eight and a half months. Before slaughter testicular measurements were taken in situ. Scrotal perimeter (SC was measured using tape as well as length (LENG and width (WID using calipers. Testicular shape and volume (using prolate and cylinder equation were calculated. After slaughter the measurements were taken in vitro. Real testicle volume (VOLR was measured using water displacement. Length (LENGV and width (WIDV were measured with calipers after skin removal. The testicles were symmetrical and calipers were an accurate means of in situ measurement of the testicle size. The form of the testicles affected the volume. The average of the prolate sphere and cylinder equations gave the best estimate for real testicle volume. High protein levels in the diet accompanied by antihelminth treatment led to higher body weight in the sheep, this being the main factor for variation in testicle biometric traits.

    KEY WORDS: Shape, sheep, testicle biometry, volume.

    Para avaliar as características biométricas testiculares de carneiros da raça Santa Inês, 24 cordeiros machos, inteiros, com peso médio inicial de 24,5 kg ± 2,88, aos quatro meses de idade, foram distribuídos em quatro tratamentos: APv (animais vermifugados + concentrado com alta proteína, APn (animais não-vermifugados + concentrado com alta proteína, BPv (animais vermifugados + concentrado com baixa proteína, BPn (animais não vermifugados + concentrado com baixa proteína durante 8

  6. Concordancia oftalmólogo-enfermera en la primera exploración post-quirúrgica de la cirugía de cataratas Agreement between ophthalmologist and nurse in the first postoperative exploration following cataract extraction

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    M.N. Soto

    2008-12-01

    Full Text Available Introducción. La actividad de enfermería en el proceso quirúrgico de la catarata engloba, desde la realización de la biometría en el preoperatorio y la colaboración en la cirugía, hasta la administración de los primeros cuidados en el postoperatorio y la información al paciente y a la familia durante todo el proceso. El objetivo del presente trabajo es analizar la concordancia entre oftalmólogo y enfermera en los hallazgos de la primera exploración postquirúrgica de los pacientes intervenidos de cataratas mediante facoemulsificación y sin complicaciones en la cirugía. Metodología. El estudio se realizó entre mayo y junio de 2005 en 129 pacientes intervenidos de cataratas, 78 mujeres y 51 hombres con edad media de 73,1 años. Se definieron las variables a valorar en la primera exploración postquirúrgica y se estudió la concordancia entre oftalmólogos y enfermeras en la identificación de las complicaciones más frecuentes de la cirugía de cataratas. Resultados. La concordancia fue del 100% de los casos en la presión intraocular >22 mm de Hg, la irregularidad pupilar, la reacción inflamatoria de cámara anterior y el prolapso de iris; del 65,9% en la presencia de Seidel, y del 60,5% en el edema corneal severo. Conclusiones. El alto índice de concordancia médico-enfermera encontrado en 4 de las variables, puede ofrecer la posibilidad de que la enfermera realice esta primera exploración postquirúrgica. Sin embargo, una concordancia moderada en el resto hace necesario un mayor periodo de formación del personal de enfermería, para conseguir aumentar estos valores.Introduction. Nursing activity in the cataract extraction process extends from carrying out biometry in the preoperative stage and collaboration in surgery, to providing the initial care in the postoperative stage and keeping the patient and family informed throughout the whole process. This article analyses agreement between ophthalmologists and nurses in the

  7. Tamaño y forma de los ovarios y del cérvix en novillas y vacas del cruzamiento absorbente holstein x cebú (Size and shape of the ovaries and cervix in heifers and cows of the absorbent crossbred holstein x zebu

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    Luís O. Alba Gómez

    2006-03-01

    Full Text Available Resumen Por biometría directa se determinó el tamaño y la forma ovárica y cervical de novillas y vacas Holstein x Cebú (F1 sacrificadas en matadero e indirectamente por estimación táctil a través del recto de vacas F2, F3 y F4. De acuerdo al tamaño, los ovarios se clasificaron en pequeños (1,0-2,4 cm; medianos (2,5-3,5 cm y grandes (3,6-5,0 cm. El 59 y el 51% de las novillas F1 mostraron ovarios pequeños y medianos respectivamente. El 34, 53 y 13% de las vacas F1 presentaron gónadas pequeñas, medianas y grandes respectivamente. El 88 y el 12% de las vacas F2; el 87 y el 13% de las F3 y el 80 y el 20% de las F4 tuvieron ovarios pequeños y medianos respectivamente. El tipo de ovario grande y aplanado no se encontró en estas vacas. La cérvix de tamaño grande, típica del ganado Cebú, se observó en el 10% de las vacas F1, en el 4% de las F2, en el 6% de las F3 y en el 10% de las F4. A medida que el cruzamiento absorbente tendió hacia el Bos taurus, la frecuencia de aparición de los tres tipos de ovarios, principalmente el grande y abollonado, disminuyó hasta casi desaparecer ya en el cruce F2, pero el tipo de ovario pequeño se mantuvo con una frecuencia alta. En cambio, la cérvix del tipo grande y encorvada tendió a disminuir con el incremento de genes Bos taurus. Abstract For this work was carried out the direct biometry of ovaries and cervix of 80 heifers and 80 cows crossbred Holstein x Zebu (F1 slaughtered. In the crossbred cows F2, F3 and F4 the measures of those organs were estimated clinically. According to their size, the ovaries were classified in small (1.0-2.4 cm, medium (2.5-3.5 cm and big (3.6-5.0 cm. The 59 and 51% of the heifers F1 showed small and medium ovaries respectively. The 34, 53 and 13% of the cows F1 had small, medium and big gonads respectively. The 88 and 12% of the cows F2; 87 and 13% of F3 and 80 and 20% of F4 had small and medium ovaries respectively. The ovaries of big size were not found in

  8. Tamaño y forma de los Ovarios y del Cérvix De Hembras Cebu De Cuba Y Sus Relaciones Con La Eficiencia Reproductiva (Size and shape of the ovaries and cervix of female zebu from cuba and their relationship with the reproductive efficiency

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    Luis O. Alba Gómez,

    2006-03-01

    Full Text Available Resumen Se realizó un estudio biométrico directo de los órganos genitales de 100 novillas y 150 vacas Cebú comercial sacrificadas en matadero. Según el diámetro mayor, los ovarios se clasificaron en pequeños (1,0-2,4 cm y redondeados, medianos (2,5-3,5 cm y redondeados u ovoides y grandes (3,6-5,5 cm y aplanados. En las novillas predominaron los ovarios medianos (62% y pequeños (36% y en las vacas medianos (65% y grandes (20%. El 45% de las vacas tuvo cervices grandes y encorvados. Además, se realizó la biometría indirecta por vía rectal de 200 novillas y 200 vacas Cebú cubana. En las novillas el 75% de ovarios fue pequeño y el 25% medianos. En las vacas el 78% de los ovarios fue pequeño y el 21% mediano. La frecuencia de ovarios pequeños fue el doble más alta en la raza Cebú cubana que en la Cebú comercial. Las diferencias entre los valores de IPPI, PS e II para los tres tamaños de ovarios en las dos épocas del año (lluvia y seca, no fueron significativas. Los coeficientes de correlación entre el tamaño de los ovarios y el IPPI, la masa corporal y la edad fueron de r = 0,057, r = 0,084 y r = 0,098 respectivamente. Los cuellos uterinos hipertrofiados y desviados no afectaron la permeabilidad del conducto ni la fertilidad. Se concluye que, los ovarios y la cérvix de las hembras Cebú pueden ser diferentes de las Bos taurus en cuanto a su tamaño y a su forma. It was carried out a direct biometrics study of the genital organs of 100 heifers and 150 cows commercial Zebu breed slaughtered. According to the larger diameter, the ovaries were classified into three groups: small (1.0-2.4 cm and rounded; medium (2.5-3.5 cm and rounded or ovoid and big (3.6-5.5 cm and smoothed. In heifers prevailed the medium ovaries (62% and small (36% and, in cows the medium (65% and big (20%. 45% of the cows had big and curved cervixes. Also, it was carried out an indirect biometry for rectal route of 200 heifers and 200 cows Cuban Zebu breed

  9. Técnicas de controle de qualidade utilizadas na criação de tilápia do Nilo (Oreochromis niloticus - DOI: 10.4025/actascibiolsci.v20i0.4471 Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus - DOI: 10.4025/actascibiolsci.v20i0.4471

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    Júlio Hermann Leonhardt

    1998-07-01

    (LSL. By means of Pareto’s techniques and knapsack problem used, results presented the best solution for problems of predators, biometry and diseases with the maximized function Z* objective. Quality control techniques have made possible an increase of stocking rate in the tanks without a reduction of the individual growth rate and with high productions of good quality fish.

  10. Refração e seus componentes em anisometropia Refraction and its components in anisometropia

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    David Tayah

    2009-02-01

    Full Text Available OBJETIVO: Em anisométropes comparar os valores médios individuais dos componentes oculares de ambos os olhos, correlacionar as diferenças dos componentes com as diferenças de refração; e identificar o menor número de fatores que contenham o mesmo grau de informações expressas no conjunto de variáveis que influenciam a diferença refrativa. MÉTODOS: Realizou-se estudo transversal analítico em população de 77 anisométropes de 2 D ou mais, atendida no ambulatório de Oftalmologia do Hospital Universitário da Faculdade de Medicina Nilton Lins, Manaus. RESULTADOS: Os anisométropes foram submetidos à refração estática objetiva e subjetiva, ceratometria e biometria ultrassônica A-scan. A análise dos dados foi feita por meio dos seguintes modelos estatísticos: análise univariada, multivariada, de regressão múltipla e fatorial. CONCLUSÕES: Não houve diferenças significativas na comparação dos valores médios individuais dos componentes oculares entre os olhos. Houve correlação negativa média entre a diferença refrativa e a diferença de comprimento axial (r= -0,64 (pPURPOSE: To compare the individual means of ocular components of both eyes in patients with anisometropia; to correlate the differences of the components with refractive differences; and to identify the smallest number of factors that contain the same level of information expressed in the set of variables that influence refractive difference. METHODS: An analytical transversal study was carried out in 77 patients with anisometropia of two or more dioptres seen at the Ophthalmologic Clinic, University Hospital, Nilton Lins Medical School, Manaus. RESULTS: All participants were submitted to ophthalmologic examination which included objective and subjective cycloplegic refractometry, keratometry and ultrasound biometry. Data analysis comprised the following statistical models: univariate, multivariate, multiple and factorial regression analyses. CONCLUSIONS

  11. Prospective Observational Study of Ocular Health in ISS Crews - The Ocular Health Study

    Science.gov (United States)

    Otto, C.; Barr, Y.; Platts, S.; Ploutz-Snyder, R.; Sargsyan, A.; Alexander, D.; Riascos, R.; Gibson, C.; Patel, N.

    2015-01-01

    INTRODUCTION: The Visual Impairment Intracranial Pressure (VIIP) syndrome is currently NASA's number one human space flight risk. The syndrome, which is related to microgravity exposure, manifests with changes in visual acuity (hyperopic shifts, scotomas), changes in eye structure (optic disc edema, choroidal folds, cotton wool spots, globe flattening, and dilated optic nerve sheaths), and in some cases with documented increased intracranial pressure (ICP) postflight. While the eye appears to be the main affected end organ of this syndrome, the ocular effects are thought to be related to underlying changes in the vascular system and the central nervous system. The leading hypotheses for the development of VIIP involve microgravity-induced head-ward fluid shifts along with a loss of gravity-assisted drainage of venous blood from the brain, leading to cephalic congestion, decreased CSF resorption and increased ICP. Since 70% of ISS crewmembers have manifested clinical signs or symptoms of the VIIP syndrome, it is assumed that the majority have some degree of ICP elevation in-flight compared to the ground. Prolonged elevations of ICP can cause long-term reduced visual acuity and loss of peripheral visual fields, and have been reported to cause mild cognitive impairment in the analog terrestrial population of Idiopathic Intracranial Hypertension (IIH). These potentially irreversible health consequences underscore the importance of identifying the factors that lead to this syndrome and mitigating them. METHODS: The Ocular Health study expands on the required in-flight medical testing required of long-duration crewmembers assigned to an International Space Station (ISS) mission, to include 13 sessions over a three-year period. Pre- and postflight evaluations include functional eye exams (visual testing), structural eye exams (fundoscopy, ocular ultrasound, optical coherence tomography, optical biometry and biomicroscopy), intraocular pressure (IOP, tonometry

  12. Correlação entre a espessura corneana central e o comprimento axial ocular nos portadores de glaucoma e em olhos normais Correlation between central corneal thickness and axial length in patients with glaucoma and normal eyes

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    Paula Resende Aquino de Assis Pereira Mello

    2009-08-01

    normal eyes of 31 individuals. The central corneal thickness and the axial length were measured by ultrasonic pachymeter and biometry by A-scan ultrasound, respectively. RESULTS: The results showed a mean of 535.1 mm central corneal thickness in primary angle-closure glaucoma group, 520.6 mm in primary open-angle glaucoma group and 519.2 mm in normal eyes (p=0.18. The ocular axial length on primary angle-closure glaucoma group was 22.16 mm and on primary open-angle glaucoma and normal eyes group was 22.68 mm and 22.64 mm, respectively (p=0.13. There was no significant correlation between corneal thickness and axial length in the primary angle-closure glaucoma group (r=-0.085; p=0.65, the open-angle glaucoma group (r=-0.070; p=0.69 and the normal eyes group (r=-0.120; p=0.52. CONCLUSIONS: The results of this assay suggest that there is no correlation between the central corneal thickness and the axial length in patients with glaucoma and individuals with normal eyes.

  13. Assessment and restoring soil functionality in degraded areas of organic vineyards. The preliminary results of the ReSolVe project in Italy

    Science.gov (United States)

    Priori, Simone; Agnelli, Alessandro; Castaldini, Maurizio; D'Avino, Lorenzo; D'Errico, Giada; Gagnarli, Elena; Giudi, Silvia; Goggioli, Donatella; Lagomarsino, Alessandra; Landi, Silvia; Leprini, Marco; Pellegrini, Sergio; Perria, Rita; Puccioni, Sergio; Simoni, Sauro; Storchi, Paolo; Valboa, Giuseppe; Zombardo, Alessandra; Costantini, Edoardo

    2016-04-01

    In both conventional and organic Italian vineyards, it is quite common to have areas characterized by problems in vine health, grape production and quality, often caused by improper land preparation before vine plantation and/or management. Causes for soil malfunctioning can include: reduced contribution of the soil fauna to the ecosystem services (i.e. nutrient cycles), poor organic matter content, imbalance of some element ratio, altered pH, water deficiency, soil compaction and/or scarce oxygenation. ReSolVe is a transnational and interdisciplinary 3-years research project aimed at testing the effects of selected organic strategies for restoring optimal soil functionality in degraded areas within vineyard. The different restoring strategies implemented in each plot will be: i) compost produced on farm by manure + pruning residue + grass, ii) faba bean and barley green manure, iii) sowing and dry mulching with Trifolium squarrosum L. During two years of such treatments, the trend of the soil features and the grapevine status will be monitored in detail, to reveal the positive and negative effects of such treatments. The project involves 8 research groups in 6 different EU countries (Italy, France, Spain, Sweden, Slovenia, and Turkey), with experts from several disciplines, including soil science, ecology, microbiology, grapevine physiology, viticulture, and biometry. The experimental vineyards are situated in Italy (Chianti hills and Maremma plain, Tuscany), France (Bordeaux and Languedoc), Spain (La Rioja) and Slovenia (Primorska) for winegrape, and in Turkey (Adana and Mersin) for table grape. Soil features before implementing restoring strategies showed lower content of soil organic matter and enzyme activities, and higher carbonates in degraded areas than in the non-degraded areas. The Biological Soil Quality values of microarthropods were always high, in comparison with data registered in similarly managed vineyards or stable ecosystems, and the data showed

  14. A eficácia do mentol como anestésico para tambaqui (Colossoma macropomum, Characiformes: Characidae Efficacy of menthol as an anesthetic for tambaqui (Colossoma macropomum, Characiformes: Characidae

    Directory of Open Access Journals (Sweden)

    Michelle Ferreira Façanha

    2005-01-01

    Full Text Available Os anestésicos são importantes na piscicultura para reduzir o estresse e a mortalidade no manejo. Este trabalho tem como objetivo determinar a eficácia do mentol para tambaqui durante o manejo. Na primeira série de testes, foi examinado o efeito da concentração de anestésico sobre indução à anestesia e o estresse de tambaqui. Na segunda série de testes, foi avaliada a recuperação dos peixes após a exposição a uma concentração de 150 mg/L de mentol por diferentes tempos. Na terceira série, foi avaliada se a melhor concentração encontrada para juvenil (150 mg/L também era adequada para peixes maiores. A melhor concentração para uma anestesia cirúrgica foi 150 mg/L, pois o tempo de indução é rápido, porém a recuperação é significativamente mais demorada do que para as menores concentrações testadas. Para uma anestesia, com finalidade de biometria, a melhor concentração foi 100 mg/L. Nesta concentração o tempo de indução à anestesia é prolongado, porém o tempo de recuperação está dentro da faixa considerada adequada. O tempo de recuperação do tambaqui quando exposto a 150 mg/L é significativamente igual para 10, 20 e 30 minutos de anestesia. Os resultados obtidos mostram que o mentol é um anestésico eficiente para o tambaqui.Anesthetics are important in fish culture to reduce handling stress and mortality. The objective of this work is to investigate menthol as an anesthetic for tambaqui. In the first series of tests, fish were exposed to various concentrations of menthol to evaluate induction time and stress responses. The second series examined the effect of exposure period to menthol at 150 mg/L on recovery time. The third assessed the best dosage for juveniles in larger tambaqui. The best concentration for surgical anesthesia is 150 mg/L. At this concentration the induction time is short, but their recovery time is significantly longer than that for lower concentrations. For biometry procedures

  15. Outdoor activity and myopia among 681 primary students in urban and rural regions of Beijing%北京市城乡681名小学生户外活动时间及与近视的关系

    Institute of Scientific and Technical Information of China (English)

    郭寅; 刘丽娟; 徐亮; 吕燕云; 唐萍; 冯祎

    2014-01-01

    目的 初步探讨北京市城乡681名小学生的户外活动时间及其与近视的关系.方法 以学校为基础的横断面调查.眼科检查包括视力、非睫状肌麻痹电脑自动验光、眼前段、眼球生物测量及非散瞳眼底照相.问卷项目包括一般情况、用眼时间、户外活动时间等.结果 该群学生每天户外活动时间、户外运动时间、户外休闲时间分别为(1.6±0.8)h、(0.7 ±0.1)h和(1.0±0.8)h.城、郊学生每天户外活动时间分别为(1.1±0.4)h和(2.2±0.8)h,二者差异具有统计学意义(P=0.000).在一年级中,近视、非近视儿童每天户外活动时间分别为(1.4 ±0.6)h和(1.8±0.8)h,平均每天户外休闲时间分别为(0.8 ±0.6)h和(1.1±0.9)小时,二者差异均具有统计学意义(均P=0.000);在四年级学生中同样存在这种关系.结论 该群学生每天户外活动时间较短,仅为1.6h,近视儿童的户外活动时间明显低于非近视儿童.面对我国儿童近视眼居高不下的现状,增加每天户外活动时间可能有助于降低其患病率.%Objective To explore the association between outdoor activity and myopia among 681 primary students from Beijing.Methods School-based,cross-sectional investigation.Eye examination includes the visual acuity test,auto-refractor,slit lamp,ocular biometry and non-mydriatic fundus camera.Questionnaire includes regular items,near work,outdoor activity and social-economic status.Results The mean time spent outdoors was 1.6 ± 0.8 hours daily.Time spent on outdoor sports and outdoor leisure were 0.7 ± 0.1 hours daily,1.0 ± 0.8 hours daily,respectively.Mean time of outdoor activity in urban was 1.1 ± 0.4 hours daily,compared with 2.2 ± 0.8 hours daily in rural (P =0.000).In grade-1,total time spent outdoors is significantly different between myopia and non-myopia (1.4 ± 0.6 vs 1.8 ± 0.8 hours daily,P =0.000),similar to outdoor leisure (0.8 ±0.6 vs 1.1 ±0.9 hours daily,P =0.000).The same trend was also

  16. Polyculture of fresh water shrimp Macrobrachium amazonicum (Heller, 1862 wifh Nile tilapia (Oreochromis niloticus feeding with ration pelleted and mashed / Policultivo do camarão de água doce Macrobrachium amazonicum (Heller, 1862 com a Tilápia do Nilo (Oreochromis niloticus alimentadas com rações peletizada e farelada

    Directory of Open Access Journals (Sweden)

    Leandro Bohnenberger

    2009-07-01

    Full Text Available The objective of this work was to evaluate the influence of fresh water shrimp Macrobrachium amazonicum (Heller, 1862 in performance of Nile tilapia (Oreochromis niloticus cultivated in polyculture system and feeding with ration pelleted and mashed. The work was realized in Centro de Pesquisa em Aqüicultura Ambiental-CPAA/IAP – Toledo/PR during 37 days. Were utilized like experimental unit 16 ponds excavated, covered with concrete but with bottom of soil with dimension the 4 x 3 m and useful volume the 3,5 m3. Were utilized 30 tilapias e 150 shrimps for experimental unit distributed at an entirely randomized design with 4 treatments and 4 replications, where TF: tilapia feeding with ration mashed; TCF: tilapia and shrimp feeding with ration mashed; TP: tilapia feeding with ration pelleted; TCP: tilapia and shrimp feeding with ration pelleted. The density used were the 2,6 fishes/m2 with medium initial weight the 5,58 ± 0,10 g and initial length the 5,56 cm, and the density of shrimp was the 13 shrimps/m2 with initial length the 1,04 cm. The temperature was gauged daily, while the variables dissolved oxygen, pH and electrical conductivity, weekly. The quantity of ration supplied was the 10% of total biomass of fishes, with feed frequency the 4 times a day, being corrected weekly in function of the biometry. During the experimental period the medium values of temperature, dissolved oxygen, pH and electrical conductivity of the ponds water were 23,42 ± 0,83ºC, 5,32 ± 0,52 mg/L, 7,02 ± 0,39, e 100,96 ± 1,81 µS/ cm respectively. Won´t registering any influence of shrimp during the cultivation and the ration pelleted provide the better conversion alimentary and performance of tilapias.O objetivo deste trabalho foi avaliar a influência do camarão de água doce Macrobrachium amazonicum (Heller, 1862 no desempenho da Tilápia do Nilo (Oreochromis niloticus cultivada no sistema de policultivo e alimentada com rações peletizadas e fareladas

  17. 白内障患者手术年龄和眼轴长度与晶状体厚度相关性分析%Correlation of operation age, axial length and lens thickness in cataract

    Institute of Scientific and Technical Information of China (English)

    孙小银; 徐唐

    2013-01-01

    AIM: To study the correlation of operation age, axial length and lens thickness in cataract eyes. METHODS: A total of 319 patients ( 393 eyes ) were divided into non -high myopia cataract group ( 198 patients, 237 eyes) and high myopia cataract group (121 patients, 156 eyes ) according to the axial length.Axial length and lens thickness were measured with A-mode ultrasound biometry. RESULTS:There were statistical difference in operation age (t=3.614, P=0.000), lens thickness (t=-3.081, P=0.002) between the non-high myopia cataract group and high myopia cataract group.The operation age of high myopia cataract group was younger than that of non-high myopia cataract group.The lens thickness in high myopia cataract group was thicker than that in non-high myopia cataract group. There was no significant correlation between age and axial length in the non-high myopia cataract group (r=-0.081, P=0.214).Age and lens thickness had positive correlation in the non-high myopia cataract group (r=0.178, P=0.006).Axial length and lens thickness had no significant correlation in the non-high myopia cataract group (r=-0.050, P=0.442). There was a negative correlation between age and lens thickness in the high myopia cataract group ( r=-0.211, P=0.008).Age and lens thickness had no significant correlation in the high myopia cataract group ( r=0.078, P=0.332).Axial length and lens thickness had positive correlation in the high myopia cataract group ( r=0.207, P=0.010). CONCLUSION: For the non -high myopia cataract patients, the cataract aggravate as the age increase.The operation age will not change as the axial length change. For the high myopia cataract patients, the cataract will not aggravate as the age increase, and the longer of the axial length, the younger of the operation age.%目的:探讨白内障患者手术年龄、眼轴长度、晶状体厚度之间相关性。方法:将319例393眼白内障患者根据眼轴长度分为非高度近视白内障组198例237

  18. IOLMaster与A型超声校正法测量硅油眼眼轴的对照研究%A comparative study about axial length measurement between IOLMaster and adjusted A-scan ultrasound methods in silicone-filled eyes

    Institute of Scientific and Technical Information of China (English)

    袁梦克; 王凯; 姜燕荣

    2011-01-01

    bias to the actual levels. The optical coherence biometry technology has been widely used in the measurement of IOL, but little studies have been conducted to demonstrate the IOL power difference between those methods. Objective This study was to evaluate the predictability of IOL power calculations using the IOLMaster and adjusting contact ultrasound A-scan method in silicone oil-filled eyes. Methods Forty-four silicone-filled eyes of 42 patients were divided into 2 groups according to the intraocular pressure (IOP) ( group A: ≥ 10 mmHg group,29 eyes;group B:<10 mmHg group, 15 eyes). IOLMaster and ocular ultrasonic measurement were used to measure the axis length before and after silicone oil was removed. The preoperatively measured eye axis and cornea curve were used to calculate the theoretical IOL. Results In normal IOP group ( T≥ 10 mmHg,29 eyes), the precision and stability of IOLMaster for axial length ( AL ) measurements and IOL power calculations were better than adjusted ultrasound A-scan( ZIOLMasterdependent = -2. 236, P = 0. 025 ), although in low IOP group ( T< 10 mmHg, 15 eyes),there were too much differences in axial length mesurement and IOL power calculation between the IOLMaster and adjusted ultrasound A-scan, so the post-operative imformation was not predicted accurately. Conclusion For anticipatory normal postoperative IOP eyes, the refractive outcome in cataract surgery in silicone oil-filled eyes can be predicted reliably and accurately with IOLMaster. But for complicated or anticipatory unstable postoperative IOP eyes,secondary implantation of IOL would be better.

  19. Estudo refracional em crianças pseudofácicas Refraction study on pseudophakic children

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    Gerson López Moreno

    2005-06-01

    Full Text Available OBJETIVO: Verificar as alterações refratométricas em olhos de crianças submetidas à cirurgia de catarata com implante de lente intra-ocular (LIO e pesquisar a previsão da biometria nesses casos. MÉTODOS: Foram estudados 33 olhos com medição prévia da acuidade visual com indicação cirúrgica de catarata com implante de lente intra-ocular no Ambulatório de Catarata Congênita da Escola Paulista de Medicina - Universidade Federal de São Paulo (UNIFESP-EPM, desde janeiro de 1998 até dezembro de 2000. No pós-operatório foi realizada a refração, prescritos os óculos com o adequado tratamento para estimulação visual da criança e a medida da acuidade visual final com a correção. Foram analisadas: refrações finais, a acurácia da biometria e os possíveis fatores de erros. RESULTADOS: Foram realizadas 33 cirurgias em 29 crianças. O seguimento teve média de 10,15 meses com variação de 2 até 34 ±8,18 meses. Em 43% dos casos obteve-se visão igual ou maior que 20/50. Quarenta e seis por cento dos pacientes apresentaram refração final entre +1,00 e -1,00 dioptrias esféricas. CONCLUSÃO: O tratamento da catarata congênita mediante implante de lente intra-ocular continua controverso, sendo que os resultados a longo prazo não são conhecidos. Número grande de pacientes foram operados tardiamente evoluindo com ambliopia e baixa acuidade visual mesmo após o tratamento devido a grande dificuldade de acesso ao tratamento adequado e precoce. Apesar da refração residual os pacientes obtiveram boa acuidade visual. Em 21% dos casos que permaneceram com alteração refratométrica com hipermetropia ainda terão aumento no seu diâmetro axial e conseqüentemente miopização com redução de sua refração.PURPOSE: To verify the refractive alterations in eyes of children submitted to surgery with implant of intraocular lens (IOL and to investigate prediction of biometry in these cases. METHODS: Thirty-three eyes were studied with

  20. Influence of supplying bullfrog tadpoles with feed containing 28% crude protein on performance and enzymatic activities Influência do fornecimento de uma ração comercial com 28% de proteína bruta sobre o desempenho e a atividade de enzimas digestivas de girinos de rã-touro

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    José Teixeira de Seixas Filho

    2010-01-01

    Full Text Available The objective of this study was evaluate the influence of feeding bullfrog tadpoles on commercial feed containing 28% crude protein (CP, on their digestive enzyme performance and activities. The experiment lasted 60 days, at the density of one tadpole/L in boxes containing 30 L water. A hundred and twenty tadpoles at the 25 Gosner stage averaging weight and length was 0.046 g and 6.22 mm, respectively, were used. Survival rate, length, final weight, weight gain, feed consumption, apparent food conversion, specific growth rate and activities of chime, amylase, lipase and trypisin were the parameters evaluated, biweekly, in five biometries. Quadratic effect was observed for the length and the weight. There was larger growth of the tadpoles from the 15th to the 45th day (19.82 mm. On the 15th day, the tadpoles presented the largest specific growth rate (16.93%/day, and the largest weight gain (5.460 g, feed intake (14.099 g and the best apparent food conversion (2.46 was from the 45th to the 60th day. The specific activity of amylase was 205 times greater at 60 days when compared to the beginning of the experiment. The results demonstrated that, for the three enzymes studied, the action capacity over the tadpole chime increased significantly after the 30th experimental day. Moreover, they suggested a greater capacity of tadpoles to digest carbohydrates in detriment to proteins, and this fact was accentuated in the initial phase of the exogenous feeding of this amphibian. The commercial feed with 28% CP provide good performance in the bullfrog tadpoles, indicating the juvenile formation within commercial bullfrog farming standards.Objetivou-se com este trabalho avaliar a influência da alimentação de girinos de rã-touro com ração comercial contendo 28% de proteína bruta (PB no desempenho e nas atividades de enzimas digestivas desses animais. Utilizaram-se 120 girinos no estágio 25 de Gosner com 0,046 g e 6,22 mm, respectivamente, mantidos em

  1. Determination of the optimal dose of benzocaine hydrochloride in anesthesia of tilápia (Oreochromis niloticusDeterminação da dose ótima de cloridrato de benzocaína na anestesia de tilápias (Oreochromis niloticus

    Directory of Open Access Journals (Sweden)

    Marco Antonio da Rocha

    2012-12-01

    Full Text Available Fish anesthesia is indicated for several management procedures such as capturing, biometry, tagging, transporting, physical examination, reproductive management and surgical procedures. In this study the dose of benzocaine hydrochloride necessary for tilápia (Oreochromis niloticus anesthesia was determined through six phases with 240 fish. In each phase 40 fish were evaluated. The interval between phases was two months. Mean values for weight and (allometric condition factor, in each phase, were 25.64 (2.56, 167.58 (2.88, 286.12 (2.57, 388.24 (2.50, 518.19 (2.89, 592.71 (2.67, respectively. The values for allometric condition factors showed that the animals included in the experiments were in good body conditions (P > 0.05. In each phase, fishes were captured and kept in four containers with five liters of water and benzocaine hydrochloride diluted in 20 mL of ethanol, in concentrations of 100, 140, 180, and 220 mg/liter of water. The time of induction in seconds (TI was registered for each fish, and after the anesthetic induction the biometric analysis was conducted at fixed time of 10 minutes. After, the fishes were transferred to containers with 20 liters of water under constant flow, in order to evaluate the recovering time in seconds (TR. At each phase the minimum dose of benzocaine hydrochloride concentration was calculated using LRP (Linear Response Plateau. The model included the dose of benzocaine (mg/L and the time of induction in seconds. The values of LRP were, respectively, 146.60 and 67.45, 155.95 and 76.33, 160.45 and 87.42, 167.00 and 108.14, 165.87 and 174.03, 164.00 and 139.80. The optimum dose was related to the mean weight in each phase, resulting in the equation: Dose = 149.65 + 0.03183 x weigh (r2 = 0.73. This equation showed that an increase of 1g in the body weight corresponded to an increase of 0.032 mg/L in the dose of benzocaine hydrochloride.A anestesia em peixes é indicada para auxiliar a realização de diversos

  2. Estudo prospectivo comparativo dos ciclos de ultra-som 14% e 67% do WhiteStarTM na cirurgia de catarata por facoemulsificação com a técnica " nuclear preslice" Comparative prospective study of 14% and 67% duty cycles of the ultrasound power with WhiteStarTM in the phacoemulsification cataract surgery using the nuclear preslice technique

    Directory of Open Access Journals (Sweden)

    Antonio Eduardo Pereira

    2008-10-01

    élulas endoteliais.PURPOSE: To compare the 14% and 67% duty cycles of ultrasound power, continuous module, manual pulse control in the Sovereign® phacoemulsification system with WhiteStarTM power modulation for cataract surgery. The phacoemulsification nuclear preslice technique was used to evaluate effective ultrasound time, ultrasound percentage, salt solution amount and endothelial cell loss. METHODS: This was a prospective and comparative clinical trial in 32 patients (38 eyes with senile nuclear cataract NO3 NC3 and NO4 NC4 (LOCS III divided into two groups: A and B. To perform the cataract surgery phacoemulsification with nuclear preslice technique, manual pulse control was used; for group A with 14% duty cycle (n=21 and group B with 67% duty cycle (n=17. Both groups were subdivided according to crystalline opaque level in two subgroups. Preoperative measures included complete ophthalmologic examination, biometry, pachymetry and specular microscopy and 3 months after surgery specular microscopy. RESULTS: The surgeries that were used with the 67% duty cycle had significantly more ultrasound effective time than the 14% group in more dense cataracts. The ultrasound percentage in the 67% duty cycle, in different cataract densities, was significantly higher than in the 14% duty cycle. There was no difference in the salt solution amount used in the surgeries. There was no statistically significant difference of endothelial cell loss between both ultrasound cycles. There was a statistically significant correlation between the endothelial cell loss and the variables: ultrasound effective time (EPT and salt solution amount used in surgeries in both cycles. CONCLUSIONS: This clinical trial showed less effective time of ultrasound and ultrasound percentage in the 14% duty cycle for more dense cataracts. The salt solution amount used and the endothelial cell loss were the same in both cycles. The ultrasound effective time and the salt solution amount used in the surgery were correlated

  3. Comparative analysis of visual development in urban and rural school-age children%城乡学龄儿童视觉发育差异对比分析

    Institute of Scientific and Technical Information of China (English)

    刘鹏飞; 肖林; 王风磊; 张拓红; 陆志敏

    2012-01-01

    Objective To observe the difference of visual development between rural and urban school-age children and with questionnaire on lifestyles, with the purpose of myopic prevention and treatment. Methods With random cluster sampling, 1 821 students(3 642 eyes) were randomly selected from Beijing Yangfangdian School District) urban area) and Suning School District ( rural areas) respectively. Visual acuity was measured with " E" type standard visual acuity chart while axial length and comeal refractive power with optical coherence biometry device (1OL Master, Zeiss company, Germany). After one year of follow-up, repeated measurements above mentioned, and with questionnaires. Results There was a great difference in axial length between urban and rural students) P0. 05). After one year of follow-up, in first grade group, visual acuity of children in urban area decreased greatly) t= 11.475 ,/>0.05). In term of fourth grade, visual acuity of students both in rural and urban area decreased significantly) P0.05). Moreover, the survey revealed time spent on near work (study, computer and TV) , outdoor activities and distribution of parental myopia in urban area was significantly distinct from those of rural area) P<0.05). Conclusion Different levels of visual development are found in different regions. The rate of poor vision in urban area is higher than that of rural area, with faster myopic development, implying the significance of living background, school environment as well as behaviors in formation and development of visual function.%目的 比较不同地区学龄儿童视觉发育的差异并进行生活环境调查,为近视防治提供依据.方法 采用整群随机抽样方法,对北京羊坊店中心学区(城区)及河北省肃宁县中心学区(乡区)小学生共1 821名(3 642只眼)进行研究.采用标准对数视力表测量视力,光学相干生物测量仪测量眼轴和角膜屈光力;1 a后重复测量进行比较,并发放问卷对其

  4. The effectiveness of prisms combined with plus lenses on the progression of myopia in Chinese children%棱镜组合式透镜对中国儿童近视发展的影响作用

    Institute of Scientific and Technical Information of China (English)

    刘雯; 蓝卫忠; 杨智宽; 陈林兴; 卢金华

    2012-01-01

    .00 D add) (n=42).The primary outcomes,that included myopic progression,ocular biometry and heterophoria status,were assessed every 6 months.Results 75/89 children in the SVL group,28/40 in the PCPL 1 group and 31/42 in the PCPL 2 group completed the two-year study.The changes in phoria at distance were 0.22±1.97△,0.29±3.01△ and 0.13±2.16△ (Pgroup=0.17,Ptime<0.01),respectively.The SER changes in the respective groups with SVLs,PCPLs 1 and PCPLs 2 were-1.50±0.67 D,-1.18±0.60 D and -1.04±0.66 D (P<0.01),with axial length elongations of 0.74±0.43 mm,0.44±0.38 mm and 0.42±0.30 mm (P<0.01).Conclusion The results of the two-year study show that,compared with SVLs,PCPLs can slow myopia progression and reduce the elongation of axial length.The adaptability to PCPLs is lower than SVLs and has no clinical effect on distance phoria.However,the long-term effect of PCPLs needs further study.

  5. Continental and Marine Environmental changes in Europe induced by Global Climate variability and Regional Palaeography Changes

    International Nuclear Information System (INIS)

    My PhD and post-doctorate researches have focused on paleo-climatic, paleo-geographical and paleo-environmental reconstruction of the Mediterranean Basin and its adjacent seas (i.e. the residual former Paratethys) since 11 Ma. I selected this region because it is very rich in long and continuous sediment archives, which document: (1) climate evolution of the Northern Hemisphere during the Late Cenozoic with respect to vegetation changes, and (2) progressive evolution of initially marine environments towards brackish and freshwater ones. The brackish to fresh environments had a profound effect on the marine organisms (especially dino-flagellates) that responded to the stress by developing a large variety of cyst morphologies, often described as new genera and/or species. Methods. The comparative analysis of pollen grains and dinoflagellate cysts from the same samples is rarely performed for such a long time-interval because it needs a deep knowledge in taxonomy and ecology of the both complementary proxies. I reached this parallel expertise, having the benefit of training in (1) botanical identification of pollen grains from the tropical to boreal zones and their ecological significance by Dr. J.-P. Suc, (2) taxonomy and ecology of dinoflagellate cysts by Pr. M. J. Head. To achieve an understanding of the primary factor inducing morphological variations of dinoflagellate cysts, I developed a biological approach. The simultaneous work on living and fossil (using bio-metry and associated statistical analyses) dinoflagellate cysts has allowed me to initiate the development of a transfer function, widely valid and able for the modelling of the physical parameters of sea-surface waters (salinity, temperature, nutrient contents). Such analyses were performed at high- to very high-chronological resolution, as resulting from the following approach: (1) independently established age-model, based on classical bio-stratigraphy or radiocarbon ages (for recent sediments

  6. ENDOCRINE ALTERATIONS IN REPRODUCTIVE SWINES OF HIGH PERFORMANCE ALTERAÇÕES ENDÓCRINAS EM REPRODUTORES SUÍNOS DE ALTO DESEMPENHO

    Directory of Open Access Journals (Sweden)

    Ana Luisa Neves Alvarenga

    2010-04-01

    Full Text Available

    The aim of this work was to describe the sexual and reproductive behavior of male swines of high performance, submitted to a training protocol for semen collection so that they were incorporated in breeding of reproducers of the Swine Production Sector of the Animal Science Department of the Federal University of Lavras. Animals had been submitted to measurements of testicular biometry and weighing for evaluations of testicular development and of daily gain weight (DGW. After the training period, blood samples  were collected for accomplishment of hormonal analyses of serum testosterone, oestradiol, FSH, and LH. Differences were observed in testosterone and oestradiol levels, average number of daily dummy jumps, and average ejaculation time. Animal A presented a volume of 369.68 mL and 412.67 mL, to the right and left testicle, respectively, on average eight daily dummy jumps during the period of training and the average ejaculation time was of 261 seconds. The Animal B did not carry through jump during the training and presented testicular volume of 359.76 mL right and left of 315.10 mL. Hormonal levels for animal A had been of 0.0153 ng/mL and 0.7015 ng/mL for testosterone and oestradiol, respectively. On the other hand, Animal B presented plasmatic concentration of testosterone of 0.0011 ng/mL and 0.0241 ng/mL of oestradiol. The concentrations of FSH and LH had been similar between the animals being 0.10 mU/mL and 0.10 U/L, respectively. These differences observed possibly explain both males’s sexual behavior during the period of training and semen collected.

    KEY WORDS: Boar, libido, hormones, sexual behavior.

    Objetivando descrever o comportamento sexual e reprodutivo de machos suínos de alto desempenho, submeteram-se os animais a um protocolo de treinamento para colheita de sêmen, a fim de que fossem incorporados ao plantel de reprodutores do Setor de Suinocultura do Departamento de Zootecnia da UFLA. Submeteram

  7. Níveis de proteína e de arginina digestível na ração pré-inicial de frangos de corte Protein and digestible arginine levels in pre-starter broiler rations

    Directory of Open Access Journals (Sweden)

    Mônica Schaitl Thon

    2010-05-01

    21 days of age. A total of 600 Cobb chicks was assigned to a block randomized design in a 4 × 2 factorial arrangement consisting of 4 levels of digestible arginine (1.363; 1.463; 1.563 and 1.663% and two levels of crude protein (20 and 22% with eight treatments, each one with five replicates of 15 broilers each. For the experiment, weight gain, feed intake, feed conversion ratio, gastrointestinal biometry, digestibility and retention of dry matter and nitrogen were evaluated. The highest weight gain from 1 to 14 days old was obtained with the 22% crude protein feed. The levels of digestible arginine had a quadratic effect in feed conversion from 1 to 10 days old. The esophagus and crop weights were higher for broilers fed 20% crude protein based diet; however, there was a quadratic effect of the digestible arginine levels on the intestine length at the age of 10 days and on the esophagus + crop weight at 3 days of age. At 14 days of age, there was interaction among crude protein and digestible arginine levels for liver relative weight, which showed quadratic response to 20% of crude protein, and for intestine length, whose highest value was obtained with 22% of crude protein and 1.603% of digestible arginine. Nitrogen balance and retention were the highest for levels of 22% of crude protein. The level of 1.363% of digestible arginine meets nutritional requirements of pre-starter broilers.

  8. 北京市城乡限定学校一、四年级小学生近视眼患病率及相关危险因素%The prevalence and associated risk factors of myopia in grade 1 and grade 4 primary students of defined schools in urban and rural regions of Beijing

    Institute of Scientific and Technical Information of China (English)

    郭寅; 刘丽娟; 徐亮; 吕燕云; 唐萍; 冯祎; 孟梦

    2012-01-01

    Objective To explore the prevalence and associated factors of myopia among Grade-1 and Crade-4 primary students in urban and rural regions of Beijing. Design School-based, cross-sectional investigation. Participants Two schools were investigated. Three hundred eight-two Grade-1 and 299 Grade-4 primary students participated in the study. Methods Comprehensive eye examination including visual acuity, ocular motility evaluation, auto-refraction, slit lamp biomcroscopy, ocular biometry and non-mydriatic fundus photography were carried out on all paticipants. Parents and children were administered detailed questionnaires including general information, nearwork, social-economic parameters and outdoor activity. Main Outcome Measures Prevalence and associated factors of myopia. Results According to different definitions of myopia (Spherical Equivalent, SE≤0.50 D, ≤-1.00 D, ≤-1.50 D, ≤-2.00 D), the prevalence was 48.1%, 27.9%, 17.5% and 11.6%, respectively. In multivariate logistic regression analysis, the prevalence of myopia (SE≤-1.00 D)was associated with age (P=0.003, Ort=1.45, 95% canfidence intervals, CI: 1.25,1.67), place (P=0.000, OR=0.20, 95% CI: 0.14,0.29), parental myopia(P=0.000, OR=2.99, 95%CI: 1.83,4.89), outdoor sports (P=0.013, OR=0.14, 95%CI: 0.03,0.65), outdoor leisure (P=0.001, OR=0.33, 95%CI: 0.22,0.49), outdoor activity (P=0.001, OR=0.35, 95%CI: 0.24,0.50), studying indoors (P=0.001, OR=1.37, 95%CI: 1.09,1.72), watching television indoors (P=0.008, Oft =0.66, 95%CI: 0.52,0.84). Correspondingly, axial length was significantly associated with higher age (P=0.000; standardized coefficient beta: 0.28), taller body height (P=0.001; beta: 0.18), parental myopia (P=0.03; beta: 0.09) and urban region of habitation (P=0.000; beta: -0.21), less time spent outdoors (P=0.001; beta: -0.16), outdoor leisure(P=0.001;beta:-0.15 )and more time spent indoors with studying (P=0.02; beta: 0.10). Children with higher age, urban region of habitation, less time