Alkaline ribonuclease activity in maternal serum and in serum of newborns from birth up to thirty days of age. A study made with full-term appropriate-, full-term small- and preterm appropriate-for-gestational-age infants

We have studied the alkaline ribonuclease (RNase) activity in maternal serum and serum of full-term small- (T-SGA), full-term appropriate- (T-AGA) and preterm appropriate-for-gestational age (PT-AGA) newborns. A significantly lower level of RNase was observed in T-AGA and T-SGA newborns on the 30th day of age and in PT-AGA newborns on the 15th and 30th days of age, as compared to other T-AGA, T-SGA and PT-AGA groups of infants at birth. RNase activity was significantly higher in cord blood than in the maternal blood in all categories studied. Moreover, in preterm newborns, RNase activity in cord blood was significantly higher in those presenting a lower gestational age. We did not observe any significant difference in RNase levels in the cord blood of newborns from the 3 categories studied. The same results were observed concerning maternal blood. We, therefore, conclude that RNase activity in cord blood or in maternal blood is not a very statisfactory indicator of fetal malnutrition.

Electromyographic validation of the trapezius and serratus anterior muscles in military press exercises with open and middle grip

Electromyographic activity of the trapezius muscle and serratus anterior muscle was analysed in 4 different modalities of military press exercises, each of them with 2 grips: open and middle. It was analyzed 24 male volunteers using a 2-channel TECA TE 4 electromyograph and Hewlett Packard surface electrodes. The TS and SI muscles acted with high and very high activity in all the modalities of military press exercises. Statistically, they did not show significative difference in the performance of the exercises with open and middle grip, justifying the inclusion of this group of exercises with both grips for the physical conditioning programmes.

Financing for development and middle income-countries: new challenges

Spanish version avalilable at the Library

Information technology for development of small and medium-sized exporters in Latin America and East Asia

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: Chile

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: Colombia

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: Peru

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: Brazil

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: Argentina

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: El Salvador

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Information and communication technology (ICT) for development of small and medium-sized exporters in Latin America: Mexico

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Information and communication technology (ICT) for development of small and medium-sized exporters in East Asia: Japan

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Information and communication technology (ICT) for development of small and medium-sized exporters in East Asia: China

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Information and communication technology (ICT) for development of small and medium-sized exporters in East Asia: Singapore

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Information and communication technology (ICT) for development of small and medium-sized exporters in East Asia: Republic of Korea

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