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1
artículo
Publicado 2023
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The impact of mining activity does not only generate royalties to the government but also contamination by heavy metals such as lead which is one of the main products that cause concern for public health, as they can cause various abnormalities such as headache, irritability, ataxia, seizures, cerebral edema, anemia, renal, hepatic and reproductive failure. In 2018, inhabitants from Huacho (Ancash Region, Perú) complained about lead poisoning. The objective of this research is to determine lead concentrations in soil and water and their correlation with the presence of this metal in the blood of Huacho inhabitants. This research studied the blood results from the 63 tested inhabitants since 71,4% of them had high concentrations of lead in their blood. Samples from drinking and crop irrigation water, and agricultural soil were taken, was analyzed by inductively coupled plasma optical emi...
2
artículo
Publicado 2023
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The impact of mining activity does not only generate royalties to the government but also contamination by heavy metals such as lead which is one of the main products that cause concern for public health, as they can cause various abnormalities such as headache, irritability, ataxia, seizures, cerebral edema, anemia, renal, hepatic and reproductive failure. In 2018, inhabitants from Huacho (Ancash Region, Perú) complained about lead poisoning. The objective of this research is to determine lead concentrations in soil and water and their correlation with the presence of this metal in the blood of Huacho inhabitants. This research studied the blood results from the 63 tested inhabitants since 71,4% of them had high concentrations of lead in their blood. Samples from drinking and crop irrigation water, and agricultural soil were taken, was analyzed by inductively coupled plasma optical emi...
3
artículo
Publicado 2022
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The present investigation describes the various environmental socioeconomic problems and the risks that threaten health, due to the development of the secondary lead industry in Peru, this situation contrasts the state of the secondary lead industry with developed countries and proposes objectives of alternatives. sustainable for the Peruvian territory. The method used is descriptive and comparative, consisting of the search, evaluation and analysis of the facts. Currently, lead-acid batteries are disposed of in open-air dumps without measures to protect human and environmental health, and legal provisions are also lacking. Batteries contain toxic elements that can increase the levels of air, soil and water pollution in the areas where they are dismantled. It is concluded that lead is recognized as a toxic and dangerous substance. because they generate toxic gases causing damage to man, ...
4
tesis de grado
Publicado 2023
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En la era digital, la captación de leads de calidad para los programas de MBA que ofrecen las escuelas de postgrado de universidades privadas se convierte en un desafío estratégico. Para abordar este reto, es imperativo combinar enfoques innovadores con métodos tradicionales de pago. En este resumen, se analiza cómo atraer leads de calidad tanto a través de medios digitales novedosos como TikTok, enfoques orgánicos y virales, como mediante plataformas tradicionales de pago, como Meta, LinkedIn y Google Ads. Asimismo, examinaremos a fondo la relevancia de conceptos cruciales, como el marketing digital y el marketing de contenido, que desempeñan un papel fundamental en la adquisición de leads de calidad. Además, exploramos cómo la colaboración con influencers y la creación de pilares sólidos de contenido se traducen en estrategias efectivas para atraer prospectos de alto valo...
5
artículo
Publicado 2013
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Lead, a metal that has been extensively used since antiquity, can be found in the majority of persons. This metal affects systems, organs, and tissues. The thresholds for its toxic effects vary from individual to individual. Probably because they are in the process of development and due to cer tain physiological, pathological y behavioral characteristics children usually absorb a greater proportion of lead with more severe outcomes than adults. Public health services can identify areas where people has a higher risk for lead intoxication and establish requirements for screening, early diagnosis and adequate treatment. The determination of lead in venous blood is the most sensitive test for the evaluation of lead exposure. Experts recommend maintaining a level below 10 μg/dL. This article reviews origin, effects, diagnosis and treatment of lead intoxication.
6
artículo
Publicado 2005
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Lead, a ubiquitous heavy metal, has been found in places as unlikely as Greenland’s fossil ice. Egyptians and Hebrews used it. In Spain, Phoenicians c. 2000 BC worked ores of lead. At the end of the XX century, occupational lead’s poisoning became a public health problem in developed countries. In non-developed countries occupational lead poisoning is still frequent. Diagnosis is directed to recognize lead existence at the labor environment and good clinical and occupational documentation. Differential diagnosis considers neurological and abdominal pain syndromes. Both blood lead and zinc-protoporphyrin levels are trustworthy and crucial analysis. In exposed workers, blood-lead can attain 40 ug/100 mL and even 80 ug/100 mL in unhealthy industries workers and zincprotoporphyrin is above 4 ug/g of hemoglobin. Treatment consists mainly in calcium disodium edetate, d-penicillamid lead’...
7
artículo
Publicado 2019
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Occupational lead contamination in Peru is a serious problem that has not been adequately regulated in Peru to date. The main activities that generate occupational contamination of this metal include processes such as battery manufacturing, lead scrap smelting, fire testing to quantify gold and silver in mining, etc. The Objective of this article is to identify the details that should be considered in the Lead contamination in fire assay laboratories in the analytical determination of gold and silver, and analyze their deficiencies. Data on lead contamination in fire test laboratories in Peru are difficult to find in the literature available.
8
artículo
Publicado 2019
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Occupational lead contamination in Peru is a serious problem that has not been adequately regulated in Peru to date. The main activities that generate occupational contamination of this metal include processes such as battery manufacturing, lead scrap smelting, fire testing to quantify gold and silver in mining, etc. The Objective of this article is to identify the details that should be considered in the Lead contamination in fire assay laboratories in the analytical determination of gold and silver, and analyze their deficiencies. Data on lead contamination in fire test laboratories in Peru are difficult to find in the literature available.
9
tesis de grado
Publicado 2024
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El presente trabajo de investigación examinó las estrategias de comunicación que una prestigiosa universidad de Lima emplea en Facebook para la captación de leads, durante el mes de mayo de 2024. Se realizó un análisis minucioso mediante la aplicación de herramientas de fichas de observación y entrevistas a especialistas en comunicación y marketing. Estas metodologías permitieron evaluar en detalle las publicaciones y actividades en la página oficial de la universidad, así como obtener perspectivas valiosas sobre las estrategias utilizadas. Los datos recopilados fueron analizados para describir, evaluar y proponer mejoras en la comunicación institucional. El enfoque cualitativo, con un diseño fenomenológico, facilita una comprensión profunda de las experiencias y percepciones relacionadas con las estrategias de captación. En conclusión, la investigación ofrece una visi...
10
artículo
Publicado 2002
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The main oxidized lead minerals are: cerussite and anglesite, which due to their crystallography and wettability should not be buoyant, for this reason it is necessary to study the flotation properties for these minerals, the main ones are: solubility, surface physico-chemical , thermodynamics, fines content and others, it is concluded that anglesite is less buoyant than cerussite, both can be floated directly with amyl xanthate: long-chain hydrocarbon collector and cationic collectors such as alamine 26-D. The flotation of oxides improves when they are previously sulfurized before adding xanthate type collector, obtaining economically acceptable results. The above is applied to a polymetallic mineral of galena, sphalerite and cerussite; up to four flow charts are discussed, two are experimented, and with the bulk flotation scheme Pb-Zn, followed by flotation of oxides, after sulfurizati...
11
otro
Plantea las principales estrategias de Lead Nurturing aplicadas al sector servicios digitales, indicando las etapas del proceso, sus componentes y actividades principales, así como los métodos y herramientas más utilizadas para lograr activar el proceso de conversión de Leads a Clientes creando contenidos originales para atraer, informar, educar, involucrar, validar, convertir y mantener al target lead en el contacto con la cadena de valor de la empresa.
12
artículo
Publicado 2023
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Lead is a toxic substance that can be present in toys through their decorative painting and that, when absorbed orally by children, can lead to chronic intoxication through bioaccumulation. As a result, in Peru, Maximum Permissible Limits (MPL) of 90 ppm or mg/kg have been established according to D.S. No. 008-2007-SA. Thus, the objective of the present investigation was to determine the concentration of lead in educational toys (puzzles) to determine if they are within the Maximum Permissible Limits (MPL) and its relationship with the places of sale, country of origin and if it has sanitary authorization. Samples were analysed by the ICP-OES method. The 92,85% of toys had lead concentrations above 90 ppm/Pb. The values had a maximum of 3712,5 90 ppm/Pb and a minimum of 60 ppm. Therefore, it was concluded that lead concentration in most toy paints exceeds the established values for lead....
13
artículo
Publicado 2008
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Introduction: Work with lead is a universal industrial problem, especially when done without labor hygiene approach. Lead Peruvian’s mining and metallurgy maintains good quality programs for management of occupational health, but informal Peruvian industry does not. Objectives: To determine the actual heath status of handicraft and informal batteries factories workers using blood lead levels as exposition indicators. Design: Observational and transversal study. Setting: Ilo, Peru’s Occupational Health Service Hospital. Participants: Workers at four handicraft informal batteries factories. Interventions: Information was obtained from 41 workers by direct interview, from August 1999 through January 2000. For blood lead levels determination we used atomic absorption spectrophotometry with graphite oven, and for hemoglobin, microhematocrit. We obtained percentages, averages, ranges, and ...
14
artículo
The acquisition and generation of knowledge through research is one of the research is one of the fundamental pillars for all sciences in general. all sciences in general. The process to carry out a research work is The process of conducting research is driven by the scientific method, which aims to validate a hypothesis through a series of systematic steps (1). In the field of health sciences, research converges on the knowledge of an area of interest or a research question, using the scientific research methodology to analyze and test the hypothesis formulated. However, the "types" of research can be considered different compared to other areas and are referred to as "research designs".
15
artículo
Publicado 2020
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The various anthropogenic activities pollute environmental resources in one way or another; One of the pollutants with the greatest impact is heavy metals. Lead removal capacity was studied (II) using the fungal biomass of Rhizopus sp. Rhizopus sp was grown in potato dextrose broth medium, it was worked in a batch system where the removal tests were carried out with lead metal (II), evaluating the influence of the parameters of pH, temperature and initial concentration of metal (II). The Rhizopus sp biomass manages to efficiently remove the lead (II) metal from aqueous solutions, determining the optimal parameters for the removal of lead, values of pH 5, temperature of 25 ° C and initial metal concentration of 50 ppm with which lead is achieved (II) in 85,49%, 84,19% and 99,90% respectively. Bioremediation represents an alternative to treat wastewater with heavy metals, as it is a low-c...
16
artículo
Publicado 2020
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The various anthropogenic activities pollute environmental resources in one way or another; One of the pollutants with the greatest impact is heavy metals. Lead removal capacity was studied (II) using the fungal biomass of Rhizopus sp. Rhizopus sp was grown in potato dextrose broth medium, it was worked in a batch system where the removal tests were carried out with lead metal (II), evaluating the influence of the parameters of pH, temperature and initial concentration of metal (II). The Rhizopus sp biomass manages to efficiently remove the lead (II) metal from aqueous solutions, determining the optimal parameters for the removal of lead, values of pH 5, temperature of 25 ° C and initial metal concentration of 50 ppm with which lead is achieved (II) in 85,49%, 84,19% and 99,90% respectively. Bioremediation represents an alternative to treat wastewater with heavy metals, as it is a low-c...
17
tesis de grado
Publicado 2019
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El objetivo de esta tesis ha sido determinar la relación entre la comunicación organizacional y el desarrollo empresarial, para dicho propósito se ha tomado en cuenta la teoría humanística de la administración planteado por Elton Mayo, en la que se enfoca primordialmente en los colaboradores, y su estabilidad dentro del ambiente laboral, donde la comunicación, la cultura y clima organizacional, juegan un gran papel para poseerla. Es una investigación de tipo aplicada, con nivel descriptivo – correlacional, de diseño, no experimental de corte transversal y de enfoque, cuantitativo; la población estuvo conformada por los 50 colaboradores de la empresa prestadora de servicios Leading Group S.A.C, ubicada en San Miguel, donde el instrumento utilizado fue un cuestionario de elaboración propia con escala de respuestas de tipo Likert (5 niveles de respuesta), conformado por 18 íte...
18
informe técnico
Publicado 2023
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El curso ISC Leading people and teams brinda al estudiante las habilidades de liderazgo esenciales, que incluyen cómo inspirar y motivar a las personas, administrar el talento, influir sin autoridad y liderar equipos. En este curso, el estudiante aprenderá directamente de líderes excepcionales, como Jeff Brodsky, director global de recursos humanos de Morgan Stanley, y John Beilein, entrenador en jefe del equipo de baloncesto masculino de la Universidad de Michigan. En este curso, los expertos compartirán cómo liderar personas y equipos de manera efectiva, para aplicar estos conocimientos a sus propios equipos y liderazgo. En cada micro curso, el estudiante tendrá la oportunidad de aplicar nuevas habilidades de liderazgo trabajando en una serie de asignaciones prácticas de liderazgo. Además, la culminación le permitirá al estudiante trabajar en los desafíos de liderazgo en viv...
19
informe técnico
Publicado 2023
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El curso ISC Leading people and teams brinda al estudiante las habilidades de liderazgo esenciales, que incluyen cómo inspirar y motivar a las personas, administrar el talento, influir sin autoridad y liderar equipos. En este curso, el estudiante aprenderá directamente de líderes excepcionales, como Jeff Brodsky, director global de recursos humanos de Morgan Stanley, y John Beilein, entrenador en jefe del equipo de baloncesto masculino de la Universidad de Michigan. En este curso, los expertos compartirán cómo liderar personas y equipos de manera efectiva, para aplicar estos conocimientos a sus propios equipos y liderazgo. En cada micro curso, el estudiante tendrá la oportunidad de aplicar nuevas habilidades de liderazgo trabajando en una serie de asignaciones prácticas de liderazgo. Además, la culminación le permitirá al estudiante trabajar en los desafíos de liderazgo en viv...
20
informe técnico
Publicado 2023
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El curso ISC Leading people and teams brinda al estudiante las habilidades de liderazgo esenciales, que incluyen cómo inspirar y motivar a las personas, administrar el talento, influir sin autoridad y liderar equipos. En este curso, el estudiante aprenderá directamente de líderes excepcionales, como Jeff Brodsky, director global de recursos humanos de Morgan Stanley, y John Beilein, entrenador en jefe del equipo de baloncesto masculino de la Universidad de Michigan. En este curso, los expertos compartirán cómo liderar personas y equipos de manera efectiva, para aplicar estos conocimientos a sus propios equipos y liderazgo. En cada micro curso, el estudiante tendrá la oportunidad de aplicar nuevas habilidades de liderazgo trabajando en una serie de asignaciones prácticas de liderazgo. Además, la culminación le permitirá al estudiante trabajar en los desafíos de liderazgo en viv...
