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1
tesis de grado
La presente investigación titulada “Saldo A Favor Del Exportador Y Su Efecto En La Liquidez De Agroexportadora Copacabana De Chincha S.A., Ica – 2021”. Tuvo como objetivo general: Determinar cómo incide la devolución del saldo a favor del exportador en la liquidez de la empresa agroexportadora. Fue de tipo aplicada, de diseño, no experimental-transversal, descriptivo y correlacional-causal. La población y la muestra estuvo conformada por 15 colaboradores de la empresa. Así mismo la técnica que se utilizo fue la encuesta y el instrumento el cuestionario, Con respecto a la escala de medición, se utilizó el escalamiento de Likert, para dar la fiabilidad al instrumento se calculó con el alfa de Cronbach y validez mediante el juicio de expertos. Los resultados obtenidos demuestran que el saldo a favor del exportador tiene un nivel aceptable del 48% frente a la liquidez que tie...
2
artículo
The aim of this study was to determine the effect of cryopreservation on acrosomal integrity in viable alpaca sperm. Samples from 46 alpaca testicles that had motility >30% and sperm concentration >50x106 sperm/ml were processed. Sperm recovered from the tail of the epididymis were separated into two 500 µl aliquots. The first aliquot was for the initial fresh evaluation and the second aliquot was frozen in straws and stored in liquid nitrogen until the evaluation of acrosomal integrity. For the evaluation of viability and acrosomal integrity, 100 µl of each sample were incubated with 2.5 µl of FITC-PSA (100 µg/ml) and 0.5 µl of propidium iodide (PI, 2.4 mM) for 10 min at 38 °C. Immediately afterwards, the samples were evaluated by flow cytometry, acquiring 10 000 events compatible with sperm per sample. FITC-PSA and PI were excited with a 488 nm laser, and fluorescence ...
3
artículo
The aim of this study was to determine the effect of cryopreservation on acrosomal integrity in viable alpaca sperm. Samples from 46 alpaca testicles that had motility >30% and sperm concentration >50x106 sperm/ml were processed. Sperm recovered from the tail of the epididymis were separated into two 500 µl aliquots. The first aliquot was for the initial fresh evaluation and the second aliquot was frozen in straws and stored in liquid nitrogen until the evaluation of acrosomal integrity. For the evaluation of viability and acrosomal integrity, 100 µl of each sample were incubated with 2.5 µl of FITC-PSA (100 µg/ml) and 0.5 µl of propidium iodide (PI, 2.4 mM) for 10 min at 38 °C. Immediately afterwards, the samples were evaluated by flow cytometry, acquiring 10 000 events compatible with sperm per sample. FITC-PSA and PI were excited with a 488 nm laser, and fluorescence ...