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artículo
Publicado 2021
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Purpose: The COVID-19 pandemic is a colossal challenge for global health; nonetheless, specific subgroups face considerably higher risks for infection and mortality. Among patients with malignant diseases, those with hematologic neoplasms are at a higher risk for poor outcomes. The objective of this study was to register treatment modifications associated with the COVID-19 pandemic and their short-term consequences in Latin America.Methods: Multicenter, prospective, observational, cohort study including patients older than 14 years from 14 centers in four countries (Mexico, Peru, Guatemala, and Panama) who had a confirmed diagnosis of acute leukemia, and who were undergoing active treatment since the first COVID-19 case in each country until the cutoff on July 15, 2020.Results: We recruited 635 patients. Treatment modifications because of the COVID-19 pandemic were reported in 40.8% of c...
2
artículo
Publicado 2021
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Purpose: The COVID-19 pandemic is a colossal challenge for global health; nonetheless, specific subgroups face considerably higher risks for infection and mortality. Among patients with malignant diseases, those with hematologic neoplasms are at a higher risk for poor outcomes. The objective of this study was to register treatment modifications associated with the COVID-19 pandemic and their short-term consequences in Latin America. Methods: Multicenter, prospective, observational, cohort study including patients older than 14 years from 14 centers in four countries (Mexico, Peru, Guatemala, and Panama) who had a confirmed diagnosis of acute leukemia, and who were undergoing active treatment since the first COVID-19 case in each country until the cutoff on July 15, 2020. Results: We recruited 635 patients. Treatment modifications because of the COVID-19 pandemic were reported in 40.8% of...
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By using the criterions of sensibility of IUPAC, we had determinad the sensibility far chromic (III) and (VI) from solution of its differents salts. We found that ion chromic (VI) in the form ion chromate is much sensible than chromic (III).
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By using the criterions of sensibility of IUPAC, we had determinad the sensibility far chromic (III) and (VI) from solution of its differents salts. We found that ion chromic (VI) in the form ion chromate is much sensible than chromic (III).
5
artículo
Publicado 2013
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Applying the method of pressure swing distillation (PSD) we obtained (97 % v/v) ethanol starting from 95 % v/v ethanol, which shows that the ethanol-water azeotrope has been broken in this study. Experimental work to achieve the final product was carried out operating !he column in two stages or modes, these being: (1) Low pressure distillation (LPD), and (2) High pressure distillation (HPO). In the first operating mode, a low degree industrial alcohol (80 % v/v ethanol) is fed to a bench scale distillation column packed with Mellapack structure, where (95 % v/v) ethanol is obtained, working at atmospheric pressure. Then product collected in !he first stage is fed to the reboiler, and !he HPD process takes place to get 97 % (v/v) ethanol. Here we have shown that it is possible to perform the pressure swing using an auxiliary engineered device, instead of using a second distillation colum...
6
artículo
Publicado 2013
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Applying the method of pressure swing distillation (PSD) we obtained (97 % v/v) ethanol starting from 95 % v/v ethanol, which shows that the ethanol-water azeotrope has been broken in this study. Experimental work to achieve the final product was carried out operating !he column in two stages or modes, these being: (1) Low pressure distillation (LPD), and (2) High pressure distillation (HPO). In the first operating mode, a low degree industrial alcohol (80 % v/v ethanol) is fed to a bench scale distillation column packed with Mellapack structure, where (95 % v/v) ethanol is obtained, working at atmospheric pressure. Then product collected in !he first stage is fed to the reboiler, and !he HPD process takes place to get 97 % (v/v) ethanol. Here we have shown that it is possible to perform the pressure swing using an auxiliary engineered device, instead of using a second distillation colum...
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Forest census allows getting precise data for logging planning and elaboration of the forest management plan. Species identification blunders carry inadequate forest management plans and high risks inside forest concessions. Hence, an identification protocol prevents the exploitation of non-commercial or endangered timber species. The current Peruvian legislation allows the incorporation of non-technical experts, called “materos”, during the identification. Materos use common names given by the folklore and traditions of their communities instead of formal ones, which generally lead to misclassifications. In the real world, logging companies hire materos instead of botanists due to cost/time limitations. Given such a motivation, we explore an end-to-end software solution to automatize the species identification. This paper introduces the Peruvian Amazon Forestry Dataset, which includ...
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artículo
Publicado 2010
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Pinch analysis is applied to reduce energy and water consumption in the process of fuel ethanol production so the technical, economic and environmental feasibility is demonstrated. The consumption of heat, water and total cost of process is reduced to 50, 40 and 25% respectively.
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artículo
Publicado 2010
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Se aplica el análisis Pinch para la reducción de consumo de energía y agua en el proceso de producción de etanol carburante y se demuestra la viabilidad técnica, económica y ambiental. Se reducen los consumos de calor, agua y costo total de proceso hasta 50, 40 y 25%, respectivamente.
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artículo
Publicado 2010
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Biodiesel is produced in a vertical photobioreactor using a Botryococcus braunii bubbling carbon dioxide in natural conditions of solar irradiation. The technique of metabolic control is applied in the growth of microalgae producing up to 14 g / L and 29% lipid of dry biomass. The oil is extracted with n-hexane and then by transesterification the biodiesel is obtained with a calorific value of 40 MJ/kg, a density of 0.86 kg/L and a viscosity of 5.2 × 10(-4) Pa s (at 40 °C)
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artículo
Publicado 2010
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Biodiesel is produced in a vertical photobioreactor using a Botryococcus braunii bubbling carbon dioxide in natural conditions of solar irradiation. The technique of metabolic control is applied in the growth of microalgae producing up to 14 g / L and 29% lipid of dry biomass. The oil is extracted with n-hexane and then by transesterification the biodiesel is obtained with a calorific value of 40 MJ/kg, a density of 0.86 kg/L and a viscosity of 5.2 × 10(-4) Pa s (at 40 °C)
12
artículo
Publicado 2022
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Resúmenes del 15.º Congreso Mundial de la Asociación Internacional Hepato-Pancreato-Biliar, 30 de marzo - 2 de abril de 2022, Nueva York, EE. UU.
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artículo
Publicado 2022
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Resúmenes del 15.º Congreso Mundial de la Asociación Internacional Hepato-Pancreato-Biliar, 30 de marzo - 2 de abril de 2022, Nueva York, EE. UU.
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artículo
Publicado 2022
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Objectives: Venetoclax combinations are a new standard for patients with acute myeloid leukemia (AML). We aimed to evaluate the safety and efficacy of these combinations in a period of accelerated approval in Latin-America. Methods: This observational study evaluated adults with acute myeloid leukemia who received venetoclax-based therapy in 11 public or private centers in Mexico and Peru for both newly diagnosed or relapsed and refractory AML. Results: Fifty patients were included
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artículo
Publicado 2024
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The clinical applications and benefits of the use of a Robotic Exoskeleton for Rehabilitation (RER) in the elbow and hand are described because a RER is a high-quality alternative capable of restoring compromised functions and neurorehabilitation at the same time in post-stroke patients. Passive rehabilitation (PR) is usually applied in the early stages of post-stroke recovery. The responsibility of assisting physical medicine and rehabilitation (PM&R) doctors and the patient with passive exercises is a robotic system (RS); while active rehabilitation (AR) is applied regularly in late stages, it is like PR and its implications but requires the strength and support of the person to perform the exercises voluntarily. The objective of the present study is to collect, synthesize, and report relevant scientific studies related to the implementation of exoskeleton systems for elbow-hand rehabi...
16
artículo
Publicado 2024
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The World Health Organization (WHO) estimates that 15 million people are affected by stroke each year, causing deterioration of the upper limb, which is reflected in 70-80% of them, decreasing the performance of daily activities and quality of life, mainly affecting hand functions. Thus, the purpose of this study is to present a high-quality alternative to recover muscle tone and mobility, consisting of a hand-exoskeleton for passive rehabilitation. It covers a motion protocol for each finger and pressure sensors to give a safety pressure range during the gripping function. The bio-design method covers standards (ISO 13485 and VDI 2206) based on biomechanic and anthropometric fundamentals, where Fusion 360 was used for mechanical development and electrical-electronic circuit schematics. The prototyping process was based on 3D printing using polylactic acid (PLA); also, the actuators were...
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artículo
Publicado 2023
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Background: Recent data about clinical features, triggers and management of anaphylaxis in Latin America is lacking. Objective: To provide updated and extended data on anaphylaxis in this region. Method: An online questionnaire was used, with 67 allergy units involved from 12 Latin-American countries and Spain. Among data recorded, demographic information, clinical features, severity, triggering agents, and treatment were received. Results: Eight hundred and seventeen anaphylactic reactions were recorded. No difference in severity, regardless of pre-existing allergy or asthma history was found. Drug induced anaphylaxis (DIA) was most frequent (40.6%), followed by food induced anaphylaxis (FIA) (32.9%) and venom induced anaphylaxis (VIA) (12%). FIA and VIA were more common in children-adolescents. Non-steroidal anti-inflammatory drugs (NSAIDs) and beta-lactam antibiotics (BLA) were the mo...
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artículo
Publicado 2023
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PURPOSEMultiple myeloma (MM) is a highly heterogeneous, incurable disease most frequently diagnosed in the elderly. Therefore, data on clinical characteristics and outcomes in the very young population are scarce.PATIENTS AND METHODSWe analyzed clinical characteristics, response to treatment, and survival in 103 patients with newly diagnosed MM age 40 years or younger compared with 256 patients age 41-50 years and 957 patients age 51 years or older.RESULTSThere were no statistical differences in sex, isotype, International Scoring System, renal involvement, hypercalcemia, anemia, dialysis, bony lesions, extramedullary disease, and lactate dehydrogenase (LDH). The most used regimen in young patients was cyclophosphamide, bortezomib, dexamethasone, followed by cyclophosphamide, thalidomide, dexamethasone and bortezomib, thalidomide, dexamethasone. Of the patients age 40 years or younger, o...
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artículo
Publicado 2023
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B A C K G R O U N D: The aim of these clinical standards is to aid the diagnosis and management of asthma in low-resource settings in low- and middle-income countries (LMICs). M E T H O D S: A panel of 52 experts in the field of asthma in LMICs participated in a two-stage Delphi process to establish and reach a consensus on the clinical standards. R E S U L T S: Eighteen clinical standards were defined: Standard 1, Every individual with symptoms and signs compatible with asthma should undergo a clinical assessment; Standard 2, In individuals (>6 years) with a clinical assessment supportive of a diagnosis of asthma, a hand-held spirometry measurement should be used to confirm variable expiratory airflow limitation by demonstrating an acute response to a bronchodilator; Standard 3, Pre- and post-bronchodilator spirometry should be performed in individuals (>6 years) to support diagnosis be...
