Color Changes in Gamma Irradiated CR-39 and Makrofol Nuclear Track Detectors

2010 ◽  
pp. 1 ◽  
Author(s):  
S.A.Nouh
Keyword(s):  
Color Changes ◽  
Nuclear Track Detectors ◽  
Gamma Irradiated

Effect of gamma radiation on the structural, thermal and optical properties of PMMA/Sn0.75Fe0.25S2 nanocomposite

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ali A. Alhazime ◽  
Nesreen T. El-Shamy ◽  
Kaoutar Benthami ◽  
Mai ME. Barakat ◽  
Samir A. Nouh
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Gamma Irradiation ◽  
Optical Band Gap ◽  
Color Variation ◽  
Nanocomposite Films ◽  
Color Changes ◽  
Gamma Irradiated ◽  
Intermolecular Crosslinking ◽  
Amorphous Part

AbstractNanocomposite films of polymethylmethacrylate PMMA with Sn0.75Fe0.25S2 nanoparticles (NPs) were fabricated by both thermolysis and casting techniques. Changes in PMMA/Sn0.75Fe0.25S2 nanocomposite (NCP) due to gamma irradiation have been measured. XRD results indicate that the gamma doses of 10–80 kGy cause intermolecular crosslinking that reduces the ordered portion in the NPs. Bonding between the NPs and the host PMMA was confirmed by FTIR. TGA results indicate an enhancement in thermal stability in the NCP films irradiated with doses 20–80 kGy. The optical band gap was reduced from 3.23 to 2.47 eV upon gamma irradiation up to 80 kGy due bonding between the NPs and PMMA which enhanced the amorphous part of the NPs. Finally, the color variation between the blank and irradiated films (ΔE) was determined. Color changes immensely when the PMMA/Sn0.75Fe0.25S2 NCP films are gamma irradiated. Values of ΔE were as much as 31.6 which is an acceptable match in commercial reproduction on printing presses.

COLOR CHANGES IN PIGMENT-FREE RESIDUES FROM GAMMA-IRRADIATED GREEN BEANS, BROCCOLI, SWEET POTATOES AND CARROTS

1960 ◽  
Vol 25 (6) ◽  
pp. 739-749 ◽  
Author(s):  
F. J. FRANCIS ◽  
G. E. LIVINGSTON ◽  
R. FRANCESCHINI ◽  
T. WISHNETSKY
Keyword(s):  
Sweet Potatoes ◽  
Green Beans ◽  
Color Changes ◽  
Gamma Irradiated

Color changes in X-ray irradiated PM-355 and Makrofol DE 7-2 nuclear track detectors

2014 ◽  
Vol 65 (3) ◽  
pp. 30201 ◽  
Author(s):  
Samir A. Nouh ◽  
Amal Mohamed ◽  
Radiyah Ahmed Bahareth ◽  
Maymona M. Abutalib ◽  
Kaoutar Benthami
Keyword(s):  
X Ray ◽  
Color Changes ◽  
Nuclear Track Detectors

Presentation of Gamma-Irradiated-in-Air Polyethylene Wear in the Form of a Synovial Cyst

2003 ◽  
Vol 13 (5) ◽  
pp. 413-418
Author(s):  
Bryan T. Edwards ◽  
Patrick B. Leach ◽  
R. Scott Corpe ◽  
Robert D. Zura ◽  
Timothy R. Young
Keyword(s):  
Polyethylene Wear ◽  
Synovial Cyst ◽  
Gamma Irradiated

Employing Gamma Ray Irradiated Giardia lamblia as Trialed Vaccine in Experimental Animal

2019 ◽  
Vol 9 (02) ◽  
Author(s):  
Amal Kamil Abdul Sada ◽  
Amany Mohamed Al-Kaysi
Keyword(s):  
Giardia Lamblia ◽  
Gamma Ray ◽  
Age Groups ◽  
Active Phase ◽  
Study Groups ◽  
Negative Control ◽  
Control Group ◽  
High Dose ◽  
Histopathological Changes ◽  
Gamma Irradiated

This is an experimental trial to prepare a vaccine from gamma-irradiated Giardia lamblia which is evaluated in experimental animals. The study was conducted from December 2015 to April 2016. The field survey of the parasite was conducted from those patients attending the laboratories of the Alawi Children's Hospital in Rusafa and the Al-Yarmouk Teaching Hospital in Karkh, through which 1250 stool samples of different age groups were examined. Five groups of mice were used in the study; the first was injected with normal saline and considered as a negative control group, the second was injected with cystic form of non-irradiated Giardia lamblia and considered as a positive control group, whereas the other three groups were injected with gamma irradiated Giardia lamblia at three different doses 10, 15 and 25 rad respectively. Giardia lamblia was primarily cultivated in liver infusion agar for ten days to obtain the active phase. On the sixth day, the cystic phase was purified and standardized to be used in the infection of mice with or without the exposure of gamma rays. Mice showed high sensitivity to parasitic infestation, in the gamma non-irradiated and the irradiated with gamma 10 rad, and 15 rad irradiated groups which was 100%. The results expressed an excystation process of the depleted phases and the release of the feeder phases. The results of the three irradiated groups consisted of histopathological changes of the small, and the rectum by dissection after two weeks of infection, with intestine amputation lesions, as well as ulceration and inflammation of the inflammatory cells represented in small numbers of neutrophil, lymphocytes, and eosinophils. The presence of ulceration and fall of epithelial cells in the intestinal cavity has been shown, and different forms of the parasite have been observed. Mice which was injected with irradiated G lamblia at high dose (25 rad), not show and sensitivity to the challenge infection and no excystation of thy parasite had been done. After 2 wreaks, a comparison was achieved between all study groups in which no histopathological changes were noticed in the mice irradiated with dose of25 rad. After another two weeks, a challenge dose was given (un-attenuated G lamblia) and mice were dissected after another two weeks, no changes on the level of histopathology of intestinal tissue were noticed the results suggested that mice acquire an immunity against the parasite infection.

Physicochemical Properties of Gamma-Irradiated Corn Starch

2006 ◽  
Vol 11 (2) ◽  
pp. 146-154 ◽  
Author(s):  
Yong-Jin Lee ◽  
Sun-Young Kim ◽  
Seung-Taik Lim ◽  
Sag-Myung Han ◽  
Hye-Mi Kim ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Corn Starch ◽  
Gamma Irradiated
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