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Search Results: 1 - 10 of 147395 matches for " Miriam B. Nforsi "
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Aptian-Late Cenomanian Fluvio-Lacustrine Lithofacies and Palynomorphs from Mamfe Basin, Southwest Cameroon, West Africa  [PDF]
Olivier A. Njoh, Miriam B. Nforsi, Junie N. Datcheu
International Journal of Geosciences (IJG) , 2015, DOI: 10.4236/ijg.2015.67064
Abstract: The sedimentary sequences in the Mamfe Basin are generally thought of as continental (fluvio-lacustrine) in origin. But the wide spread occurrence of salt springs and salt accumulations and in places gypsum, often puts to question the exclusive continentality throughout this basin’s history. The sequences studied portray a wide range of complex lithologies and lithofacies relationships and include basal and intra-formational conglomerates, sandstones, shales, carbonaceous, carbonate and halite facies respectively. All these are well exposed at several outcrop sections distributed all over the basin with some measuring up to and above 30 m in height.Sedimentary structures include: parallel aligned imbricated prismatic pebbles, plannar to trough-cross stratifications, fining upward grain size distribution and thin frequently alternating sandstone-shale beds. Palynological data have been obtained for the first time from the shally and carbonate intervals and integrated with five lithofacies associations, permitting the determination of the ages and paleo environmental reconstruction. The palynomorphs are characterized by pteridophytic spores dominated byCicatricosisporitessp.,Cyathiditessp. andDeltoidsporasp., pollen grains include gymnosperms dominated byClassopollis annulatus
Comparación de Metodologías Analíticas para Determinación de Aluminio en Fluidos de Hemodiálisis
Quirós,Miriam B.;
Portugaliae Electrochimica Acta , 2009,
Abstract: in order to quantifying aluminium by analyzing hemodialysis fluids, two methodologies were developed and validated: square wave adsorptive voltammetry (swav) and electrothermic absortion. performance parameters were established for the two methodologies. they were both applied successfully to the analysis of hemodialysis fluids.
Comparación de Metodologías Analíticas para Determinación de Aluminio en Fluidos de Hemodiálisis Comparison of Analytical Methodologies for Aluminium Determination in Hemodialysis Fluids
Miriam B. Quirós
Portugaliae Electrochimica Acta , 2009,
Abstract: Se desarrolló y validó una metodología para cuantificar aluminio en fluidos utilizados en hemodiálisis renal, basada en la reacción de Al con cupferrón, adsorción del complejo sobre un electrodo de gota de Hg y la posterior desorción y medida de la corriente producida por la reducción del complejo. Se realizó la validación de parámetros para voltamperometría de onda cuadrada (SWV). Se determinaron también los parámetros de desempe o del método, veracidad, ámbito lineal, límite de detección, límite de cuantificación. Se aplicó a la determinación de aluminio en muestras de hemodiálisis. Se desarrolló y validó posteriormente una metodología para la determinación de aluminio en fluidos empleados en hemodiálisis renal por absorción electrotérmica. Se determinaron las mejores condiciones para el tratamiento de la muestra. También se determinaron los parámetros de desempe o del método. Esta metodología se aplicó durante un a o al análisis de los fluidos de la Unidad de Hemodiálisis del Hospital México de la Caja Costarricense del Seguro Social de Costa Rica. El contenido en μg/L de la mayor parte de las muestras analizadas por ambas metodologías se encontraban sobre las recomendaciones internacionales en agua empleada en hemodiálisis. In order to quantifying aluminium by analyzing hemodialysis fluids, two methodologies were developed and validated: square wave adsorptive voltammetry (SWAV) and electrothermic absortion. Performance parameters were established for the two methodologies. They were both applied successfully to the analysis of hemodialysis fluids.
Action-oriented obesity counseling attains weight stabilization and improves liver enzymes among overweight and obese children and adolescents  [PDF]
Allison C. Sylvetsky, Jean A. Welsh, Stephanie M. Walsh, Miriam B. Vos
Open Journal of Pediatrics (OJPed) , 2012, DOI: 10.4236/ojped.2012.23037
Abstract: Introduction: Pediatricians are encouraged to promote behavior modification to reduce childhood obesity and its co-morbidities, yet the effectiveness of office counseling is unclear. We aimed to evaluate if a low-intensity intervention (action-oriented counseling) in a clinic setting results in weight stabilization, and if the effect is modified by a diagnosis of non-alcoholic fatty liver disease (NAFLD). We hypothesized that patients with NAFLD would be more motivated to adhere to the lifestyle goals set in clinic, due to the diagnosis of an obesity-related condition; and, would therefore achieve greater weight reduction compared to similarly overweight and obese patients without a diagnosis of NAFLD. Methods: A retrospective chart review was conducted on 73 (35 male, 38 female) overweight and obese patients (BMI ≥ 85th percentile) attending a pediatric GI clinic between January 2006 and October 2011. Analysis was conducted to determine if lifestyle goals discussed with the patient at each clinic visit were associated with improved BMI, BMI z-score, and liver enzymes. Treatment outcomes among NAFLD patients and similarly obese patients without NAFLD were compared using t-tests and chi-square tests. Results: Of the children evaluated, 74.0% achieved a reduction or stabilization in BMI z-score after 3 months of follow-up. Among NAFLD patients, liver enzymes improved in 72% of those who were able to stabilize or reduce their BMI and among 43% of those who gained weight. Treatment outcome did not significantly differ based on having a diagnosis of NAFLD, although there was a trend towards greater improvements. Conclusion: Our study suggests that action oriented counseling including goal-setting in a low intensity, clinic based approach is effective in improving patient BMI, in the presence or absence of an obesity-related co-morbidity, such as NAFLD. Further, we demonstrated that lifestyle modification led to improvement of liver enzymes in NAFLD patients and may result in other clinically relevant improvements. Longer studies will be needed to determine if the improvements are sustained.
First report of the genera Macvicaria Gibson & Bray, 1982, Pachycreadium Manter, 1954 and Saturnius manter, 1969 (Trematoda: Digenea), in brazilian marine fishes
Fernandes, Berenice M. M.;Goulart, Miriam B.;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000500020
Abstract: macvicaria crassigula (linton, 1910) (opecoelidae) is referred from the intestine of micropogonias furnieri and from stellifer rastrifer; and from stellifer rastrifer, and saturnius maurepasi overstreet, 1977 (bunocotylidae) from the stomach of mugil liza. this is the first report of these species in brazil, and a new host records are presented.
Dinosoma clupeola sp. n. (Hemiuridae) and Pseudoacanthostomum floridensis Nahhas & Short, 1965 (Acanthostomidae), digenetic trematodes in Brazilian Marine fishes
Fernandes, Berenice M. M.;Goulart, Miriam B.;
Memórias do Instituto Oswaldo Cruz , 1989, DOI: 10.1590/S0074-02761989000100018
Abstract: dinosoma clupeola sp. n. is described from harengula clupeola, and resembles d. hawaiiense yamaguti, 1970, from which it differs in the entire, elongate-saccular seminal vesicle, tegument weakly plicated, smaller size of body and internal organs, and slightly larger and narrower eggs. pseudoacanthostomum floridensis nahhas & short, 1965 is referred to netuma barba, which represents a new host record.
Schikhobalotrema solitaria sp. n. and S. acanthuri Yamaguti, 1970 (Haplosplanchnidae: Digenea) in Brazilian marine fishes
Fernandes, Berenice M. M.;Goulart, Miriam B.;
Memórias do Instituto Oswaldo Cruz , 1989, DOI: 10.1590/S0074-02761989000800035
Abstract: schikhobalotrema solitaria sp. n. is described from stephanolepis hispidus (linnaeus, 1758), and is characterized by the relation between oral sucker and pharynx 1:1,1. this relation in the other species ranges between 1:0.3-0.6. it is more similar to s. manteri siddiqi & cable, 1960 in the distribution of vitellaria, differing from it in the size of vitelline follicles, extension of uterus and in the size of the eggs. s. acanthuri yamaguti, 1970 is referred for the first time in south america in mugil liza valenciennes, 1836 representing a new host record.
Development and Validation of an Adsorptive Method for Aluminium Determination in Fluids Used in Renal Dialysis
Quirós,Miriam B.; Wu,Biyun Z.;
Portugaliae Electrochimica Acta , 2005,
Abstract: it was developed and validated an analytical methodology able to quantify aluminium in haemodialysis fluids, based on the reaction of aluminium with cupferrron (ammonium salt of n-nitroso phenyl hydroxyl amina), on the adsorption of the complex on a hanging drop mercury electrode, and on the measurement of the reduction current of the complex. parameter validation was done using square wave voltammetry for accumulation potential, time of accumulation, frequency, pulse amplitude, equilibrium time, cupferron concentration, optimum ph. performance parameters of the method were established: detection limit, quantification limit, reliability, lineal interval for the calibration curves. the method was applied to haemodialysis mineralized fluids, being done the quantification of the aluminium presented.
Desarrollo y Validación de un Método Adsortivo para la Determinación de Aluminio en Fluidos Usados en Diálisis Renal Development and Validation of an Adsorptive Method for Aluminium Determination in Fluids Used in Renal Dialysis
Miriam B. Quirós,Biyun Z. Wu
Portugaliae Electrochimica Acta , 2005,
Abstract: Se desarrolló y validó una metodología apta para cuantificar aluminio en fluidos utilizados en hemodiálisis renal, basada en la reacción de Al con cupferrón (sal de amonio de la N- nitroso fenil hidroxil amina), y en la adsorción sobre un electrodo de gota de Hg, la desorción y la medida de la corriente producida por la reducción del complejo. Para lograr este objetivo se realizó la validación de parámetros para voltamperometría de onda cuadrada (SWV): potencial de acumulación, tiempo de acumulación, frecuencia, amplitud de pulso, tiempo de equilibrio, concentración de cupferron, pH óptimo. Se determinaron también los parámetros de desempe o del método, veracidad, ámbito lineal, límite de detección, y límite de cuantificación. Se aplicó el método a fluidos de hemodiálisis mineralizados siendo éste adecuado para la cuantificación de aluminio. It was developed and validated an analytical methodology able to quantify aluminium in haemodialysis fluids, based on the reaction of aluminium with cupferrron (ammonium salt of N-nitroso phenyl hydroxyl amina), on the adsorption of the complex on a hanging drop mercury electrode, and on the measurement of the reduction current of the complex. Parameter validation was done using square wave voltammetry for accumulation potential, time of accumulation, frequency, pulse amplitude, equilibrium time, cupferron concentration, optimum pH. Performance parameters of the method were established: detection limit, quantification limit, reliability, lineal interval for the calibration curves. The method was applied to haemodialysis mineralized fluids, being done the quantification of the aluminium presented.
Jacobsen/Paris-Trousseau Syndrome: Report of a Case with Emphasis on Platelet’s Light Microscopic and Ultrastructure Findings  [PDF]
Michael Losos, Basil M. Kahwash, Miriam Conces, Joel Thompson, Riten Kumar, Samir B. Kahwash
Open Journal of Pathology (OJPathology) , 2016, DOI: 10.4236/ojpathology.2016.61002
Abstract: Jacobsen syndrome (JS) is a rare, inherited disorder, characterized by facial and skull dysmorphism, mental retardation, and platelet abnormalities. Paris-Trousseau syndrome (PTS) is a platelet function disorder that may be encountered in patients affected by JS. PTS is manifested by a mild lifelong bleeding tendency. Morphologically, the presence of large fused platelet alpha granules is characteristic. We present a case of Jacobsen syndrome in a child and highlight the typical morphologic and ultrastructure findings of platelets.
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