scholarly journals Nanodiamonds as a state-of-the-art material for enhancing the gamma radiation resistance properties of polymeric membranes

2020 ◽  
Vol 2 (3) ◽  
pp. 1214-1227 ◽  
Author(s):  
Amita Bedar ◽  
Nitesh Goswami ◽  
Amit K. Singha ◽  
Virendra Kumar ◽  
Anil K. Debnath ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Radiation Resistance ◽  
Radiation Effects ◽  
State Of The Art ◽  
Polymeric Membranes ◽  
Polysulfone Membranes

Radiation effects on polysulfone membranes without and with incorporating nanodiamonds into the polysulfone matrix.

Langmuir-Blodgett Nanotemplate and Radiation Resistance in Protein Crystals: State of the Art

2012 ◽  
Vol 22 (3) ◽  
pp. 219-232 ◽  
Author(s):  
Luca Belmonte ◽  
Eugenia Pechkova ◽  
Shailesh Tripathi ◽  
Dora Scudieri ◽  
Claudio Nicolini
Keyword(s):  
Radiation Resistance ◽  
State Of The Art ◽  
Protein Crystals ◽  
Langmuir Blodgett

A Novel Model for Implementation of Gamma Radiation Effects in GaAs HBTs

2012 ◽  
Vol 60 (12) ◽  
pp. 3693-3698 ◽  
Author(s):  
Jincan Zhang ◽  
Yuming Zhang ◽  
Hongliang Lu ◽  
Yimen Zhang ◽  
Min Liu
Keyword(s):  
Gamma Radiation ◽  
Radiation Effects ◽  
Novel Model

scholarly journals Influence of Casting Solvents on CO2/CH4 Separation Using Polysulfone Membranes

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 286
Author(s):  
Roba M. Almuhtaseb ◽  
Ahmed Awadallah-F ◽  
Shaheen A. Al-Muhtaseb ◽  
Majeda Khraisheh
Keyword(s):  
High Efficiency ◽  
In Situ Synthesis ◽  
Separation Process ◽  
Polymeric Membranes ◽  
Gas Mixture ◽  
Manufacturing Cost ◽  
Binary Gas Mixture ◽  
Maximum Permeability ◽  
Polysulfone Membranes

Polysulfone membranes exhibit resistance to high temperature with low manufacturing cost and high efficiency in the separation process. The composition of gases is an important step that estimates the efficiency of separation in membranes. As membrane types are currently becoming in demand for CO2/CH4 segregation, polysulfone will be an advantageous alternative to have in further studies. Therefore, research is undertaken in this study to evaluate two solvents: chloroform (CF) and tetrahydrofuran (THF). These solvents are tested for casting polymeric membranes from polysulfone (PSF) to separate every single component from a binary gas mixture of CO2/CH4. In addition, the effect of gas pressure was conducted from 1 to 10 bar on the behavior of the permeability and selectivity. The results refer to the fact that the maximum permeability of CO2 and CH4 for THF is 62.32 and 2.06 barrer at 1 and 2 bars, respectively. Further, the maximum permeability of CF is 57.59 and 2.12 barrer at 1 and 2 bars, respectively. The outcome selectivity values are 48 and 36 for THF and CF at 1 bar, accordingly. Furthermore, the study declares that with the increase in pressure, the permeability and selectivity values drop for CF and THF. The performance for polysulfone (PSF) membrane that is manufactured with THF is superior to that of CF relative to the Robeson upper bound. Therefore, through the results, it can be deduced that the solvent during in-situ synthesis has a significant influence on the gas separation of a binary mixture of CO2/CH4.

Gamma radiation effects on some properties of YBCO

1991 ◽  
Vol 178 (1-3) ◽  
pp. 11-14 ◽  
Author(s):  
L. Luo ◽  
Y.H. Zhang ◽  
S.H. Hu ◽  
W.H. Liu ◽  
G.L. Zhang ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Radiation Effects

Gamma radiation effects in capacitance of alpha alumina doped with rare earths

2014 ◽  
Vol 95 ◽  
pp. 385-388 ◽  
Author(s):  
E.S. Ferreira ◽  
K.A. Gonçalves ◽  
J. Mitani ◽  
M. Yee ◽  
S.H. Tatumi
Keyword(s):  
Gamma Radiation ◽  
Rare Earths ◽  
Radiation Effects ◽  
Alpha Alumina

High Temperature Storage and Gamma Radiation Effects on Mechanical Properties of Stacked Die Package

2014 ◽  
Vol 895 ◽  
pp. 567-570
Author(s):  
Azman Jalar ◽  
Wan Yusmawati Wan Yusoff ◽  
Norinsan Kamil Othman ◽  
Irman Abdul Rahman
Keyword(s):  
High Temperature ◽  
Gamma Radiation ◽  
Radiation Effects ◽  
Storage Period ◽  
Bending Test ◽  
Three Point Bending ◽  
Micromechanical Properties ◽  
3D Ct Scan ◽  
High Temperature Storage ◽  
Temperature Storage

Effect of gamma radiation (1.33 MeV) and high temperature storage of semiconductor package towards micromechanical properties has been investigated. The in-house fabricated Quad Flat No Lead was exposed to gamma radiation with the dose of 5 Gy. Afterwards, high temperature storage was performed at 150 °C for 10, 100 and 1000 hours. Subsequently, the three point bending technique was carried out to obtain the micromechanical properties of semiconductor package. The fracture of the packages caused by three point bending test was subjected to 3D CT scan to capture the image of the fracture. Irradiated package shows the decreasing in their strength with increasing doses of gamma radiation. However, the strength of the package was improved after high temperature storage for 10 hours and decreased as the storage period is extended. Further analysis exhibited that high temperature storage for 10 hours is reveal as good thermal treatment for package in radioactive environment application.

Neutron Radiation Effects on Lubricants and O-Rings for Target and Accelerator Applications

2021 ◽  
Vol 1024 ◽  
pp. 127-133
Author(s):  
Matteo Ferrari ◽  
Aldo Zenoni ◽  
Yong Joong Lee ◽  
Alberto Andrighetto
Keyword(s):  
Gamma Radiation ◽  
Radiation Damage ◽  
Radiation Effects ◽  
Nuclear Reactor ◽  
Neutron Radiation ◽  
Radioactive Isotopes ◽  
Structural Level ◽  
Radiation Resistant ◽  
Under Construction ◽  
Neutron Radiation Effects

Lubricants and O-rings are necessarily used for the construction of many accelerator-driven facilities as spallation sources or facilities for the production of radioactive isotopes. During operation, such component will absorb high doses of mixed neutron and gamma radiation, that can degrade their mechanical and structural properties. Experimental radiation damage tests of these components are mandatory for the construction of the facility. Methodologies for irradiation in nuclear reactor mixed fields and post-irradiation examination of lubricating oils, greases and O-rings were developed and are here presented. Samples were characterized with standard mechanical and physical-chemical tests. Parametric studies on the dose rate effects have been performed on O-rings. A case studies for a specific O-ring application in a gate valve has been developed. Some of the tested samples showed a dramatic change of their properties with dose, while others remain stable. Results were collected on nine commercial greases, on one oil and on four commercial elastomeric O-rings. The most radiation resistant among the selected products are now considered for application in facilities under construction. The main mechanisms of neutron and gamma radiation damage on these polymers were investigated at the mechanical and structural level.

Gamma Radiation Effects on Tritium Permeation Through Stainless Steel

1983 ◽  
Vol 4 (2P2) ◽  
pp. 681-686 ◽  
Author(s):  
G. R. Longhurst ◽  
G. A. Deis ◽  
P. Y. Hsu ◽  
L. G. Miller ◽  
R. A. Causey
Keyword(s):  
Stainless Steel ◽  
Gamma Radiation ◽  
Radiation Effects ◽  
Tritium Permeation

An analysis of gamma radiation effects on ZnS- and CdTe-passivated HgCdTe photodiodes

2006 ◽  
Author(s):  
Min Yung Lee ◽  
Young Ho Kim ◽  
Nam Ho Lee ◽  
Yong Soo Lee ◽  
Siva Sivananthan ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Radiation Effects ◽  
Hgcdte Photodiodes
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