The presence of heavy metals in milk is a public health problem that negatively effects human health, especially infant health. This study evaluated the concentration levels of lead (Pb) and cadmium (Cd) in blood and its transfer to the milk of 20 cows in production in a rural community near the La Oroya Metallurgical Complex in Peru, which has emitted fine particulate matter for more than 90 years. Validated protocols were used for sample collection. The samples were analyzed by atomic absorption spectrophotometry. The results of the analysis indicated that the levels, in mg/kg, of Pb in blood and milk were 0.38 AE 0.041 and 0.58 AE 0.018, respectively; Pb in milk was 54% higher than that in blood (P < 0.01). Cd levels, in mg/kg, in blood and milk were 0.016 AE 0.002 and 0.02 AE 0.007, respectively; milk had 28% more Cd than did blood (P < 0.05). The results for Pb in milk were compared with the Codex Alimentarius standard (0.002 mg/kg); the mean concentration of Pb in milk was 29 times higher than the acceptable limit, and the mean concentration of Cd was 2 times higher than the acceptable limit of the Romanian standard (0.01 mg/kg). The result could be attributed to the impact of environmental pollution by mining waste. In Peru, there are no norms for maximum Pb and Cd values, and the establishment of maximum value norms for these metals in milk is suggested.

Lead concentration on surface soil (0-20 cm), root and aerial part of natural and cultivated pastures were evaluated, in the rainy season (March 2018), collected in 20 sites of a rural community located 20 km from the La Oroya metallurgical complex , which has been emitting to the environment particulate material with heavy metals since 1922. Lead concentration was determined by flame atomic absorption spectrometry. The data was statistically processed in SPSS 23. Lead levels in the soil, root and aerial part of the cultivated pastures were 224.75 ± 39.41, 169.13 + 58.79 and 20.73 ± 2.52 mg / kg (p <0.01). In natural pastures values were 210.87a ± 40.37, 184.36b + 52.66 and 19.47c ± 3.12 mg / kg (p <0.01). There are no differences between cultivated and natural pastures. Lead transfer factor from soil to root of cultivated and natural pastures was 0.75 and 0.87. Lead transfer factor value from soil to aerial part of cultivated and natural pastures was 0.092 in both. High lead content in soil and aerial part of the pastures used as food for high Andean cattle is a public health problem; livestock products produced in these soils would not be fit for human consumption.

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This article presents an analysis on the existing correlation of the specific and global performance of teachers in UNTELS engineering schools, whose data collection was carried out during the development of the first academic semester of the year 2019, using the Survey technique; which presents indicators classified in two dimensions: "Specific Dimension of Teaching Performance" and "Global Dimension of Teaching Performance", the first dimension includes indicators such as course planning, teaching strategies, teaching communication, student communication, administration of the class, and personal and professional traits, that the teacher shows towards the student; Likewise, the global dimension is related to the student's appreciation, as to whether the teacher surveyed should continue with the development of the course. This research was carried out, due to the low percentage of satisfaction in the student survey, and the appreciations in some negative cases, of the students in the Professional Engineering Schools. For this, initially it was sought to identify the number of teachers by Professional School of Engineering, whose teaching performance is poor, resulting in 17 teachers, which represents 14.05% of the total number of teachers; with which it was determined the Specific Dimension that presents the lowest level of qualification, resulting in Dimension 2 (D2): Didactic strategies, with an average grade of 10.41; These results will allow decisions to be made by the University authorities, regarding the development of a pedagogical training plan focused on improving said dimension, thus benefiting teachers in improving their teaching methodology. According to the analysis made, the dimensions of the specific and global performance of teachers in UNTELS engineering schools show a high positive level of Pearson's correlation.

like all universities, has as one of its objectives the training of professionals with skills that the changing working world requires. One way to establish the relevance of what UNTELS offers to its students is to know relevant information from graduates that entails, to their authorities, establish policies for continuous improvement of educational quality and improve the training of new professionals. In this context, the purpose of this research project is to collect information from graduates of the Professional Careers of Systems Engineering, Environmental Engineering, Mechanical and Electrical Engineering, Electronic Engineering and Communications, Business Administration from the National Technological University of South Lima of the second academic semester of the year 2017; To evaluate the satisfaction with regard to their professional training, receive a physical questionnaire with questions aimed at knowing their professional competencies, teaching staff, environments, library services, laboratory services, computer center services, administrative service of the Faculty and Professional School, University support services and personal and social attitudes that support decision-making for the improvement of educational quality at the

This research seeks to describe the proportionality of women graduated from the Professional Career of Mechanical and Electrical Engineering, analyzing their academic performance and the field of work action in which they are working. This study was done with the purpose of highlighting academic performance, and encouraging women to continue with this career, eliminating the myth that Mechanical and Electrical Engineering is not for women; In addition, this study will be a source of information for the National Technological University of Lima Sur, since, with this, action plans can be generated to increase the number of women entering in the coming years. Once the research has been carried out, it is concluded that the percentage of women who graduate in relation to the percentage of men, per academic semester 2012-II to 2018-II, is equal to 8.1%. Likewise, the weighted average of the academic performance of women graduated in the professional career of Mechanical and Electrical Engineering, is 12.98, this represents a high average for the career; so it can be indicated that the 38 women graduated, have had a good academic performance. Finally, it is concluded that there is a high Spearman ratio of 0.822 between the weighted average by specialty with the field of labor action; These results agree with what has been indicated in relation to the fact that there is a higher qualification in the specialty of Mechanics (AM) with a weighted average range of subjects from 11.73 to 15.42, and according to professional practice reports, of the 38 women graduated from the Mechanical and Electrical Engineering career, 25 are working in the field of Mechanical specialty. With these results it can be said that although the percentage of women linked to this career is still low; Women in Mechanical and Electrical Engineering have a good academic development, which is why women should continue to be encouraged to be included in the area of science, technology and innovation.

To assess student dissatisfaction, a physical questionnaire was applied; through which the indicator of the highest level of dissatisfaction was determined, being "Sufficient work tables or capacity", corresponding to the category of laboratory service, whose value of dissatisfaction is 65.61%, 47.23% and 52.11%; in the academic semesters 2017-I, 2017-II and 2018-I, respectively. Next, the indicators whose level of research is greater than 40% were determined, with three indexes of higher percentage of increase, these are; Registration and enrollment, Internet Service and the Efficiency of Administrative Personal Work; These results are intended to take relevant actions for the continuous improvement of the educational quality of UNTELS..

RESUMENObjetivos. Determinar los niveles de plomo (Pb) en gestantes y neonatos en la ciudad de La Oroya, Perú. Materiales y métodos. Se realizó un estudio transversal. La población estuvo conformada por gestantes residentes durante al menos dos años en la ciudad de La Oroya, cuando operaban normalmente las fundiciones de Pb, cobre y zinc. Se obtuvo muestras de sangre de la gestante antes del parto y luego del parto se tomaron muestras de placenta y sangre del cordón umbilical. El nivel de Pb de dichas muestras fue evaluado por espectrometría de absorción atómica con horno de grafito. Se determinaron regresiones cuadráticas y correlaciones de Pearson. Resultados. Se evaluó cuarenta partos normales. Los niveles promedio de Pb en la sangre materna, cordon umbilical y placenta fueron 27,4 ± 15,6 ug/dL; 19,0 ± 12,6 ug/dL y 319,0 ± 215,9 ug/100 g, respectivamente. El 67,5% de los neonatos tuvieron más de 10 ug/dL de Pb. El nivel de Pb de la sangre del cordón umbilical representó el 69,4% del nivel de Pb en sangre materna. Los coeficientes de correlación entre el Pb de la sangre materna y cordón umbilical, sangre materna y placenta, placenta y sangre del cordón umbilical fueron 0,36; 0,48 y 0,33, respectivamente. Conclusiones. Cuando funcionaba la fundición, las gestantes y recién nacidos tenían concentraciones elevadas de Pb en sangre. Las concentraciones de Pb en la placenta y cordón umbilical tuvieron una correlación moderada con el Pb de la sangre materna. El Pb de la sangre materna y cordón umbilical fue 1,5 veces más alto que los de zonas más alejadas. Palabras clave: Plomo; Mujeres embarazadas; Recién nacido; Cordón umbilical; Metalurgia (fuente: DeCS BIREME). LEAD LEVELS IN PREGNANT WOMEN AND NEWBORNS IN LA OROYA CITY, PERU ABSTRACTObjectives. To determine blood-lead (Pb) levels in pregnant women and neonates in a metallurgical city of Peru. Materials and methods. A cross-sectional study was carried out, the population of which consisted of pregnant women who had lived for at least two years in the city of La Oroya, at the time when the lead, copper and zinc foundries operated normally. A blood sample was obtained from the pregnant women before delivery and, after delivery, from the neonate's umbilical cord and placenta. Lead levels in those samples were measured by graphite furnace atomic absorption spectrophotometry. Pearson's squared regressions and correlations were determined. Results. Forty normal deliveries were studied. The average blood lead levels in the mother, umbilical cord and placenta were 27.4 ± 15.6 ug/dL; 19.0 ± 12.6 ug/dL and 319.0 ± 215.9 ug/100 g, respectively. 67.5% of the neonates registered levels higher than 10 ug/dL. Pb levels in the umbilical cord accounted for 69.4% of Pb level in maternal blood. The correlation coefficients between Pb levels in maternal blood and umbilical cord, maternal blood and placenta, and placenta and umbilical cord were 0.36; 0.48 and 0.33, respectively. Conclusions. At the time the foundry operated, pregnant women and newborns had high blood lead concentrati...