A5074291746- Metal Extraction and Bioleaching
- Corrosion Behavior and Inhibition
- Minerals Flotation and Separation Techniques
- Extraction and Separation Processes
- Microbial Fuel Cells and Bioremediation
- Microbial Community Ecology and Physiology
- Mine drainage and remediation techniques
- Bacterial Identification and Susceptibility Testing
- Essential Oils and Antimicrobial Activity
- Antibiotic Use and Resistance
- Heart Rate Variability and Autonomic Control
- Toxoplasma gondii Research Studies
- Biofuel production and bioconversion
- Chromium effects and bioremediation
- Rabies epidemiology and control
- Healthcare and Venom Research
- Ethnobotanical and Medicinal Plants Studies
- Supercapacitor Materials and Fabrication
- Psychedelics and Drug Studies
- Escherichia coli research studies
- Advanced Nanomaterials in Catalysis
- Coccidia and coccidiosis research
- Piperaceae Chemical and Biological Studies
- Cassava research and cyanide
- Latin American Urban Studies
Universidad Norbert Wiener
2024
Antenor Orrego Private University
2022-2023
Universidad Nacional de Moquegua
2020
University of Antofagasta
2015-2019
Universidad Andrés Bello
2009-2013
Fundación Ciencia and Vida
2010
University of Chile
2006-2009
Institut de Biochimie et Génétique Cellulaires
1984
Centre National de la Recherche Scientifique
1984
Helmholtz Centre for Infection Research
1984
Gene transcription (microarrays) and protein levels (proteomics) were compared in cultures of the acidophilic chemolithotroph Acidithiobacillus ferrooxidans grown on elemental sulfur as electron donor under aerobic anaerobic conditions, using either molecular oxygen or ferric iron acceptor, respectively. No evidence supporting role tetrathionate hydrolase arsenic reductase mediating transfer electrons to (as suggested by previous studies) was obtained. In addition, no novel identified....
Microbial Fuel Cell (MFC) technology is used in various applications such as wastewater treatment with the production of electrical energy. The objective this study was to estimate biodepuration oils and fats, elimination blue dye brl bioelectro-characterization MFCs Chlorella vulgaris bacterial community. operation at 32 d showed an increase bioelectrogenic activity (from 23.17 327.67 mW/m2) potential 200 954 mV), fats (95%) microalgal cathode, a removal chemical oxygen demand COD (anode,...
The enormous environmental problems that arise from organic waste have increased due to the significant population increase worldwide. Microbial fuel cells provide a novel solution for use of as electricity generation. In this investigation, onion was used, and managed generate maximum peaks 4.459 ± 0.0608 mA 0.991 0.02 V current voltage, respectively. conductivity values rapidly 179,987 2859 mS/cm, while optimal pH in which most generated 6968 0.286, ° Brix decreased degradation matter....
Abstract Background Acidithiobacillus ferrooxidans is chemolithoautotrophic γ-proteobacterium that thrives at extremely low pH (pH 1-2). Although a substantial amount of information available regarding CO 2 uptake and fixation in variety facultative autotrophs, less known about the processes obligate especially those living acidic conditions, prompting present study. Results Four gene clusters (termed cbb1-4 ) A. genome are predicted to encode enzymes structural proteins involved carbon...
This study was motivated by surprising gaps in the current knowledge of microbial inorganic carbon (Ci) uptake and assimilation at acidic pH values (pH < 3). Particularly striking is limited understanding differences between Ci mechanisms versus circumneutral environments where predominantly occurs either as a dissolved gas (CO2) or bicarbonate (HCO3-), respectively. In order to gain initial traction on problem, relative abundance transcripts encoding proteins involved studied autotrophic,...
The metabolic potential of 16 bioleaching microorganisms (Eubacteria and Archaea) has been investigated, allowing the prediction inter- intra-species physiological interactions (ecophysiology) during spatial temporal changes that are known to occur within industrial heaps. Genome analysis allowed preliminary models be built for genes pathways involved in key processes such as nitrogen carbon cycling, sulfur iron uptake homeostasis, extra-cellular polysaccharide biosynthesis, heavy metal...
Acidithiobacillus ferrooxidans is an obligately chemolithoautotrophic, -proteobacterium that fixes CO2 by the Calvin-Benson-Bassham (CBB) reductive pentose phosphate cycle. Our objective to identify genes potentially involved in fixation and advance our understanding of how they might be regulated response environmental signals. Bioinformatic analyses, based on complete genome sequence type strain ATCC 23270, identified five cbb gene clusters four which we show experimentally operons. These...
Autotrophic fixation of carbon dioxide into cellular occurs via several pathways but quantitatively, the Calvin–Benson–Bassham cycle is most important. CbbR regulates expression cbb genes involved in CO2 a number autotrophic bacteria. A gene potentially encoding (cbbRAF) has been predicted genome chemolithoautotrophic, extreme acidophile Acidithiobacillus ferrooxidans. However, this microorganism recalcitrant to genetic manipulation impeding experimental validation bioinformatic predictions....
Objetivo: Identificar patrones de resistencia en los aislamientos A. baumannii obtenidos una unidad cuidados intensivos Cali, Colombia. Diseño: Estudio descriptivo, prospectivo corte transversal. Institución: Clínica Universitaria Rafael Uribe Uribe, Materiales: Los se obtuvieron cultivos muestras sangre, heridas quirúrgicas, secreción nasal, orina, uretral y puntas catéter. Intervenciones: Se recolectaron 52 durante años 2009 2010. Mediante el análisis del antibiograma identificaron...
Objectives: This study explores the botanical and ethnobotanical knowledge, uses, geobotanical distribution of Nostocales algae in high Andean communities Huancavelica, Peru. It aims to document local knowledge usage understand algae's relation environmental conditions. Theoretical Framework: are recognized for their nutritional biomolecular value, with applications human nutrition, animal feed, contexts. Understanding traditional modern uses highlights cultural economic importance. Method:...
Pollution from crude oil and its derivatives poses a serious threat to human health ecosystems, with accidental spills causing substantial damage. Biodegradation, using microorganisms break down these contaminants, presents promising cost-effective solution. Exploring utilizing new bacterial strains underexplored habitats could improve remediation efforts at contaminated sites. This study aimed evaluate the hydrocarbon biodegradation capacity of bacteria isolated agricultural soils in...
El Sarcocistosis es una patología de importancia clínica en salud pública por su actividad neurotóxica, sin embargo, limitado el conocimiento del grado infección tejidos musculares camélidos. En este trabajo se evaluaron nivel Sarcocystis aucheniae tejido muscular alpacas y llamas faenadas para consumo humano. Se consideraron 969 800 positivos a S. matadero Municipal Huancavelica, Perú. La detección (cuello, costillar, diafragma zona inguinal) hizo mediante observación directa e...
El Sarcocistosis es una patología de importancia clínica en salud pública por su actividad neurotóxica, sin embargo, limitado el conocimiento del grado infección tejidos musculares camélidos. En este trabajo se evaluaron nivel Sarcocystis aucheniae tejido muscular alpacas y llamas faenadas para consumo humano. Se consideraron 969 800 positivos a S. matadero Municipal Huancavelica, Perú. La detección (cuello, costillar, diafragma zona inguinal) hizo mediante observación directa e...
Introducción: Las infecciones intrahospitalarias (IIH) constituyen un problema de salud pública que generan grandes gastos por parte los gobiernos, debido a patógenos causantes IIH presentan resistencia fármacos y una mayor permanencia pacientes, pues la infraestructura hospitalaria constituye reservorio favorable para patógenos. superficies cobre surgen como opción sanitaria efectiva controlar el crecimiento propagación estos Objetivos: Evaluar actividad bactericida las contra principales...
Un bioensayo ecotoxicológico rápido y sencillo permite una estimación confiable del estado de los ecosistemas lóticos las cuencas Camaná, Majes Colca localizados en la Región Arequipa-Perú seis estaciones muestreo (Taparza, Grande, Majes1, Majes2, Camaná1 Camaná2), mediante inhibición crecimiento microalga Pseudokirchneriella subcapitata a 24, 48 72 horas Concentración Efectiva Media (CE50), comparación con Estándares peruanos Calidad Ambiental (ECA) directrices calidad agua Organización...
El interés actual del estudio de Staphylococcus aureus deriva su elevada frecuencia cepas resistentes a los antibióticos que causa frecuentes brotes infección, especialmente, el S. con resistencia meticilina (SARM). objetivo esta revisión fue estudiar la estructura genética poblacional y origen aislamientos SARM. La tipificación cassette cromosómico mec estafilocócico es método más importante para identificar definir naturaleza clonal meticilina. Los estudios epidemiología molecular...
La biolixiviación es el proceso mediante cual se extrae cobre de minerales sulfuros baja ley usando microorganismos. lixiviación química aplica preferentemente para extraer oxidados o mixtos, pero no existe información aplicación microorganismos en esta operación. En tal sentido, la presente investigación trabajó con reactores columna por gravedad procesos química, cultivos bacterianos Acidithiobacillus ferrooxidans medio 9K y mineral cuarzo que contenía cuprita pirita, diferentes tamaños...
Quantum dots (QDs) nanoparticles are increasingly being used for electronics devices, solar energy generation and medical imaging applications.While the new properties of more studied, little is known about their interactions with aquatic organisms.As a primary producer, phytoplankton serves as an important component ecosystem.According to our bibliographic search, no reports were found on evaluation ecotoxicity QDs in Pseudokirchneriella subcapitata.In this study, evaluated using...
Las bacterias ruminales celulolíticas se utilizan en la alimentación de rumiantes por su capacidad biodegradable forrajes fibrosos. Sin embargo, existen escasos estudios alpaca, ovino y vacuno si constituyen fuentes microrganismos degradadores celulosa para aplicaciones biotecnología alimentaria. En esta investigación aisló evaluó el potencial degradador in vitro las celulíticas vacuno. Se recolectaron muestras líquido ruminal ochos especímenes del matadero municipal localidad Huancavelica –...
Las hojas del Zea mays L y Passiflora edulis tienen multipropósito para la medicina convencional por sus compuestos bioactivos, sin embargo, su uso en modelos animales carece de demostración validación biomédica, ahí el objetivo fue evaluar efecto extracto liofilizado P. Sims Z. como potencial hipotensor arterial e inducir hipocolesterolemia ratones albino suizo hipertensos. Se utilizaron 48 suizos 8 semanas dividiéndose 4 grupos: G1- maracuyá (50 mg [n= 4], 100 4] 200 4]), G2- maíz morado...