Morphotectonic and Gravimetric Analysis of the La Burra Valley, Central Precordillera, San Juan, Argentina

The main objective of esta research is to determine the level of concentration of particulate materials of the size of 10 microns and 2.5 microns of an artisanal foundry, and to Evaluate the health in workers' respiratory diseases, as well as to find a relationship Between the particulate materials and the respiratory diseases, Which the project is located in the district of San Antonio, Department of Huarochiri, Department of Lima, Peru - 2017. The gravimetric analysis method approved by the General Directorate of Environmental Health DIGESA was used, with the Protocol for air quality monitoring and data management, to determine the level of concentration of particulate material and on the other hand Health Assessments in respiratory diseases Were used a survey made by a doctor in pulmonology, Which was Then backed by medical examinations performed on workers. It was Determined That the particulate materials of 10 microns and 2.5 microns Were above environmental quality standards, Which is Considered as risky for the health of people, and in respiratory diseases it was Concluded That some of the subjects of the population of study are With occupational diseases.

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Variabilidad genética de características morfológicas de maiz nativo (Zea mays L.) en la Península de Yucatán, México

RECUBRIMIENTO COMESTIBLE CON BASE DE PIÑON MEXICANO (Jatropha curcas) SOBRE LA CALIDAD DE CHAYOTE MINIMAMENTE PROCESADO ◽

10.32854/agrop.vi0.1486 ◽

2019 ◽

Vol 12 (11) ◽

Author(s):

Antonio Villalobos-González ◽

Mónica B. López-Hernández ◽

Noel A. Valdivia-González ◽

Enrique Arcocha-Gómez ◽

Juan Medina-Méndez

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

San Juan

El objetivo fue estudiar la variabilidad genética de características morfológicas de maíces nativos en la Península de Yucatán (PY), México. Se utilizaron trece accesiones de maíz nativo reconocidas con el nombre de Naál Xóy, Xnúc Naál Blanco, Gallito Amarillo, Dzit Bacal, Mejeén Naál, Rosa San Juan, Cháck-Chóp, Teél Cháck, Sáck Teél, San Pableño, Ejú-Criollo Morado, Xmején Naál Tsitbacal y Clavo Chiapaneco. Los materiales se establecieron en Junio de 2017 y 2018, en Poxyaxum, Campeche, México, (19° 41´58.4´´ N, 90° 21´03.6´´ W y 30 msnm) bajo un diseño de bloques completos al azar con tres repeticiones. Los resultados revelaron diferencias (P£0.05) en las variables morfológicas evaluadas: número de días a floración masculina (FM) y femenina (FF) presento una inestabilidad de 12 días a FM y FF, con Naál Xóy y Ejú-Criollo Morado, y 15 días a madurez fisiológica con Clavo Chiapaneco. Una diferenciación de 98 y 126 cm en altura de mazorca y planta con Eju-Criollo Morado; 6 y 1.1 cm en longitud y diámetro de mazorca con Xnúc Naál Blanco y Cháck-Chóp, y Gallito Amarillo. Una variación de 4 hileras con Teél Cháck y 17 granos por hilera con San Pableño; 11 y 74 gr en peso de 100 granos (Xmején Naál Tsitbacal, Rosa San Juan y San Pableño) y granos por mazorca (Naál Xóy); y una diferencia mayor en rendimiento con Naál Xóy y Dzit Bacal de 3105 kg.ha-1.

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Thermal gravimetric analysis of in-situ crosslinked nanocellulose whiskers • poly(methyl vinyl ether-co-maleic acid) • polyethylene glycol

TAPPI Journal ◽

10.32964/tj10.4.29 ◽

2011 ◽

Vol 10 (4) ◽

pp. 29-33

Author(s):

LEE A. GOETZ ◽

AJI P. MATHEW ◽

KRISTIINA OKSMAN ◽

ARTHUR J. RAGAUSKAS

Keyword(s):

Thermal Stability ◽

Polyethylene Glycol ◽

Vinyl Ether ◽

Thermal Gravimetric Analysis ◽

Maleic Acid ◽

Gravimetric Analysis ◽

Thermal Gravimetric ◽

Methyl Vinyl ◽

Methyl Vinyl Ether

The thermal stability and decomposition of in-situ crosslinked nanocellulose whiskers – poly(methyl vinyl ether-co-maleic acid) – polyethylene glycol formulations (PMVEMA-PEG), (25%, 50%, and 75% whiskers) – were investigated using thermal gravimetric analysis (TGA) methods. The thermal degradation behavior of the films varied according to the percent cellulose whiskers in each formulation. The presence of cellulose whiskers increased the thermal stability of the PMVEMA-PEG matrix.

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