2,027 research outputs found
Direct – Maternal Genetic Parameters Estimated for Real-Time Ultrasound Scan Measures of Eye Muscle Area, Rib Fat Depth, and their Correlation with Body Weight in Male Philippine Riverine Buffaloes
Get PDFBackground: Ultrasound scanning is a non-invasive technique for evaluating animals based on carcass yield and meat quality traits. It has been incorporated into the beef cattle breeding program. However, little has been done in buffaloes. Thus, this study was conducted to estimate the genetic parameters for growth traits- body weights (BW) and a real-time ultrasound scan of eye muscle area (EMA) and rib fat (RF) to determine their suitability as a tool for selection.
Methods: Four hundred thirty-eight (438) male Philippine riverine buffaloes with 1,535 BW records and 417 real-time ultrasound scans of EMA and RF scans at the 12th rib were available for the study. BW was taken and adjusted at birth, 6, 12, 18, 24, 30, and 36 months while RF and EMA scans were taken at 12 & 18 mos. Genetic parameters were estimated with a pedigree-based multi-trait animal model using ASREML software.
Results: The average BW of buffaloes adjusted to 6, 12, 18, 24, 30, and 36 months of age were 135kg, 230.8kg, 323.0kg, 382.7, 453.6, and 502.4kg, respectively. The mean EMA and RF at 12 months were 29.7 cm2 and 3.2mm, respectively. Direct genetic heritabilities were 0.26±0.16, 0.29±0.12, 0.35±0.19 and 0.67±0.32 for birth, BW12mos, EMA12mos and RF12mos, respectively. Maternal genetic heritability for birth weight. was 0.12±0.09. Genetic correlations among traits were positive except between birth and RF.
Conclusions: Results indicate that ultrasound scanning can be used for selection together with BW at 12mos. and suggest that early performance is an excellent predictor of performance at a later age
Peningkatan Hasil Belajar Siswa pada Pembelajaran Matematika Menggunakan Media Manipulatif di Kelas II
Get PDFThis study aimed to describe the improvement of student learning outcomes in learning to sort the numbers up to 500 using manipulative media class II SDN 02 Sidas Kab. Landak. The method used in this study with a descriptive method forms a classroom action research is collaborative. This research was conducted by 2 cycles, each cycle consisting of the first meetings. Subjects in this study were teachers and students of class II, which amounts to 25 people. The results obtained on the ability of teachers Developing a Lesson Plan on the first cycle a total of 14.50 or the average of 2.90, the second cycle increased to 16.92 or average is 3.38. Research results obtained in the Master Implement Learning Ability in the first cycle total average 11.38 or 2.85, in the second cycle increased to 13.33 or 3.34 average. The results obtained on the learning outcomes of students in the first cycle the average total of 47.20, the second cycle increased to an average of 70.40. From the analysis of the data obtained that uses manipulative media can improve student learning outcomes class II SDN 02 Sidas District of Sengah Temila Porcupine District in mathematics learning of the sequence numbers to 500
Retracción y fluencia de hormigón autocompactante de resistencia moderada
Get PDFLos estudios sobre el hormigón autocompactante se han centrado en obtener las dosificaciones óptimas, pero hay desconocimiento acerca de su comportamiento a largo plazo, en especial en hormigones de resistencia moderada. Este trabajo estudia la fluencia y retracción de tres hormigones autocompactantes de resistencia moderada (resistencia característica aproximada de 25 MPa), cuya dosificación y propiedades mecánicas son casi iguales, pero que emplean cementos con distintos tipos de adición. En los tres casos se emplea filler calizo. El trabajo presenta los resultados de los ensayos de retracción y fluencia, que son comparados con las predicciones del Código Modelo CEB-FIP, del ACI Concrete Practice Manual y del Euro Code 2. Además también se ha obtenido el volumen total de poros y su distribución por tamaños mediante el ensayo de porosimetría por intrusión de mercurio
Creep and shrinkage of self compacting concrete of medium-strenght
Full text linkSelf-compacting concrete (SCC) is an innovative concrete that does not require vibration for placing and compacting. SCC, developed in Japan in the 1980s, provides a present-day and attractive challenge for many researchers, as the long list of papers on the topic corroborates. Nevertheless, the durability of SCC, especially medium-low strength SCC, provides the researcher with opportunities for study in depth. This paper deals with the shrinkage and creep of SCC: three SCC mixtures, with 30 MPa compressive strength, are studied. The main differences among the SCCs involve the type of the cement: one SCC with type I cement and two SCCs with blended cements. The shrinkage and creep of the three SCCs are studied and compared. Fresh properties and mechanical properties are also evaluated. The shrinkage strains and creep are calculated by means of ACI 209 and Eurocode 2 models. These models overestimate the shrinkage strains and undervalue the creep for the studied concretes
Leefstijl en huishoudelijke energieconsumptie:Analyse van patronen van huishoudelijke energieconsumptie en mogelijkheden voor besparing: een benadering volgens middel-doelketen theorie
Get PDFAplicaciones de SIG y teledetección en ecología: Guión de prácticas de la asignatura
Full text linkEste
trabajo
surge
como
resultado
del
Proyecto
de
Innovación
Docente
de
la
Universidad
Autónoma
de
Madrid
–
Convocatoria
2013:
Adaptación
de
los
recursos
informáticos
de
la
asignatura
“Aplicaciones
de
SIG
y
Teledetección
en
Ecología”
del
Máster
Oficial
en
Ecología
para
la
utilización
de
herramientas
de
software
libre,
y
elaboración
del
manual
de
las
prácticas,
coordinado
por
Juan
Traba
y
con
la
participación
de
Javier
Seoane
y
Manuel
B.
Morales;
los
tres
son
profesores
titulares
del
Departamento
de
Ecología
de
la
Universidad
Autónoma
de
Madrid.
Ester
González
de
Andrés
ha
disfrutado
de
una
beca
financiada
por
la
la
UAM
durante
la
realización
de
este
proyecto.
Queremos
agradecer
expresamente
la
imprescindible
participación
de
Mª
Paula
Delgado,
Irene
Guerrero
y
Pablo
Acebes
en
la
docencia
de
la
asignatura,
la
preparación
y
testado
de
materiales
y
en
la
revisión
crítica
de
este
documento
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