El documento trata sobre varios aspectos de la Navidad como el espíritu navideño, la unión entre las personas durante esta época, la bendición del árbol de Navidad, el origen de Santa Claus y los Reyes Magos. Describe cómo el espíritu navideño reside en cada persona y cómo la unión entre amigos y familia es importante durante la Navidad para celebrar juntos. También menciona la tradición del árbol de Navidad y cómo Santa Claus se deriva de San Nicolás, así como la leyenda de los Reyes Magos que siguieron una estrella
Synthesis of silver nanoparticle using Portulaca oleracea L. extracts. Articl...Nanomedicine Journal (NMJ)
Objective(s):
To evaluate the influences of aqueous extracts of plant parts (stem, leaves, and root) of Portulaca oleracea L. on bioformation of silver nanoparticles (AgNPs).
Materials and Methods:
Synthesis of silver nanoparticles by different plant part extracts of Portulaca oleracea L. was carried out and formation of nanoparticles were confirmed and evaluated using UV-Visible spectroscopy and AFM.
Results:
The plant extracts exposed with silver nitrate showed gradual change in color of the extract from yellow to dark brown. Different silver nanoperticles were formed using extracts of different plant parts.
Conclusion:
It seems that the plant parts differ in their ability to act as a reducing and capping agent.
- 2-Aminio-5-substituted -1, 3, 4-thiadiazoles
(I) on reaction with formalin in ethanol solvent yielded 2,
2, 2-(1, 3, 5- triazinone- 1, 3, 5-tri-yl)- tris (5-substituted 1,
3, 4-thiadiazoles) (II) in moderate to excellent yields
— In the present work, impact of UV-B radiation (280-
315nm: 0.4 W m-2) on growth, photosynthetic pigments, protein,
ascorbate, proline and lipid peroxidation have been studied in
two cyanobacteria Nostoc muscorum and Synechocystis PCC
6803. UV-B radiation (2 to 6 hrs) leads to 55% inhibition of
growth in Synechocystis PCC 6803 in comparison to control
where as in Nostoc muscorum growth reduces up to 45%. This
UV-B treatment also significantly decreased the contents of
chlorophyll, carotenoids and phycocyanin. Photosynthetic
pigments decreased with increasing doses of UV-B (2 to 6 hrs)
radiation. However, the inhibitory effect in Synechocystis PCC
6803 was more pronounced than in Nostoc muscorum. With
increasing UV-B exposure period, production of ascorbate (19-
45%), proline (12-29%) and lipid peroxidation was significantly
higher in Synechocystis PCC 6803 as compared to control
sample. It was observed that lipid peroxidation enhanced 33 %
than control sample of Synechocystis PCC 6803. Our result shows
that photosynthetic apparatus is the main target of UV-B
radiation causing degradation of photosynthetic pigments. This
study concluded that Synechocystis PCC 6803 was the susceptible
organism for survival in stress condition than Nostoc muscorum.
Fuente: Emeric Amyot d'Inville, C.M. "Anunciar la Buena Nueva de la Salvación siguiendo las huellas de San Vicente", Vincentiana: Vol. 41: No. 4, Artículo 7.
Diseña una experiencia de aprendizaje sobre lectura y escritura como
herramientas de aprendizaje transversal integrando recursos digitales.
La experiencia se debe planear en el formato 1 y luego, se socializa en
una presentación Power Point y se sube a un Slide Share, Issu u otro
recurso que genere un enlace para su visualización.
Esta guía es una ayuda para hacer por tu cuenta el retiro mensual, allí dónde te encuentres, especialmente en caso de dificultad de asistir en el oratorio o iglesia donde habitualmente nos reunimos para orar.
Guia de las cartas del tarot de el extraño mundo de jack.
Arcanos mayores y arcanos menores.
Primera guía cien porciento en español!
Con 5 tiradas para comenzar predicciones.
Aprende y utiliza este mazo para divertirte.
![Navidad ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)