scholarly journals Relationship between Heptachlor Epoxide Concentration in Pumpkin (Cucurbita maxima) and Soil Concentration Extracted with 50% (v/v) Methanol–Water Solution

2019 ◽  
Vol 29 (1) ◽  
pp. 1-9
Author(s):  
Nobuyasu SEIKE ◽  
Takashi OTANI
2009 ◽  
Vol 55 (2) ◽  
pp. 325-332 ◽  
Author(s):  
Hirotatsu Murano ◽  
Takashi Otani ◽  
Tomoyuki Makino ◽  
Nobuyasu Seike ◽  
Mizuki Sakai

2013 ◽  
Vol 161 ◽  
pp. 35-42 ◽  
Author(s):  
Keita Sugiyama ◽  
Daisuke Kami ◽  
Takato Muro ◽  
Tohru Ueno ◽  
Nobuyasu Seike ◽  
...  

2020 ◽  
pp. 139-143

Natural dyes were followed and prepared from a pomegranate, purple carrot, and eggplant peel. The absorbance spectra was measured in the wavelength range 300-800 nm. The linear properties measurements of the prepared natural dye freestanding films were determined include absorption coefficient (α0), extinction coefficient (κ), and linear refraction index (n). The nonlinear refractive index n2 and nonlinear absorption coefficient β2 of the natural dyes in the water solution were measured by the optical z-scan technique under a pumped solid state laser at a laser wavelength of 532 nm. The results indicated that the pomegranate dye can be promising candidates for optical limiting applications with significantly low optical limiting of 3.5 mW.


2015 ◽  
Vol 37 (2) ◽  
pp. 179-185 ◽  
Author(s):  
О.O. Brovko ◽  
◽  
L.A. Gorbach ◽  
О.D. Lutsyk ◽  
L.M. Sergeeva ◽  
...  

Author(s):  
В. В. Данило ◽  
І. В. Шевера ◽  
Й. О. Миня ◽  
З. Т. Гомокі ◽  
Д. А. Калімуліна ◽  
...  

2020 ◽  
Vol 64 (1) ◽  
pp. 23-28
Author(s):  
J. Hodač ◽  
Z. Fulín ◽  
P. Mareš ◽  
J. Veselá ◽  
O. Chocholatý

AbstractTo produce realistic test specimens with realistic flaws, it is necessary to develop appropriate procedure for corrosion flaw production. Tested specimens are made from steels commonly used in power plants, such as carbon steels, stainless steels and their dissimilar weldments. In this study, corrosion damage from NaCl water solution and NaCl water mist are compared. Specimens were tested with and without mechanical bending stress. The corrosion processes produced plane, pitting and galvanic corrosion. On dissimilar weldments galvanic corrosion was observed and resulted to the deepest corrosion damage. Deepest corrosion flaws were formed on welded samples. The corrosion rate was also affected by the solution flow in a contact with the specimens, which results in a corrosion-erosive wear. Produced flaws are suitable as natural crack initiators or as realistic corrosion flaws in test specimens.


Sign in / Sign up

Export Citation Format

Share Document