RADIATION, ITS PRIMARY INTERACTIONS

1960 ◽  
Vol 38 (3) ◽  
pp. 312-320 ◽  
Author(s):  
G. F. Whitmore
Keyword(s):  
Ionizing Radiation ◽  
Oxygen Tension ◽  
Biological Systems ◽  
Charged Particles ◽  
Biological Materials ◽  
Radiation Chemistry ◽  
Biological Damage ◽  
Current Thinking

A discussion is presented of some current thinking on the primary interactions of ionizing radiation with biological materials, including a brief discussion of ionization, excitation, the track phenomenon of charged particles, and the radiation chemistry of water. An attempt is made to correlate some of these phenomena with the variations in biological damage produced by various types of radiations incident on various biological systems and under varying conditions of oxygen tension.

RADIATION, ITS PRIMARY INTERACTIONS

1960 ◽  
Vol 38 (1) ◽  
pp. 312-320 ◽  
Author(s):  
G. F. Whitmore
Keyword(s):  
Ionizing Radiation ◽  
Oxygen Tension ◽  
Biological Systems ◽  
Charged Particles ◽  
Biological Materials ◽  
Radiation Chemistry ◽  
Biological Damage ◽  
Current Thinking

A discussion is presented of some current thinking on the primary interactions of ionizing radiation with biological materials, including a brief discussion of ionization, excitation, the track phenomenon of charged particles, and the radiation chemistry of water. An attempt is made to correlate some of these phenomena with the variations in biological damage produced by various types of radiations incident on various biological systems and under varying conditions of oxygen tension.

Echolocation in air: Biological systems, technical challenges, and transducer design

2007 ◽  
Vol 221 (10) ◽  
pp. 1165-1175 ◽  
Author(s):  
D A Waters
Keyword(s):  
Biological Systems ◽  
Performance Levels ◽  
Current Thinking ◽  
Transducer Design ◽  
Technical Challenges

Echolocation systems used by bats may be used by engineers wishing to emulate the performance of these biological systems. Comparisons are made between biosonar systems based on water and air, the signal structures used by animals echolocating in air, and the limits on resolution. The current thinking in how biological systems operate are discussed, as are the engineering challenges of replicating the performance levels demonstrated by echolocating animals.

The Predictability of Irreparable Biological Damage from Exposure to Ionizing Radiation

1961 ◽  
Vol 15 (6) ◽  
pp. 754 ◽  
Author(s):  
J. F. Spalding ◽  
T. T. Trujillo ◽  
W. L. LeStourgeon
Keyword(s):  
Ionizing Radiation ◽  
Biological Damage

scholarly journals Phytochemicals: Potential Therapeutic Modulators of Radiation Induced Signaling Pathways

Antioxidants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 49
Author(s):  
Bimal Prasad Jit ◽  
Biswajita Pradhan ◽  
Rutumbara Dash ◽  
Prajna Paramita Bhuyan ◽  
Chhandashree Behera ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Signaling Pathways ◽  
Antioxidant Activities ◽  
Biological Systems ◽  
Clinical Findings ◽  
Signal Pathways ◽  
Nuclear Accidents ◽  
Radiation Induced ◽  
Harmful Effects ◽  
Different Doses

Ionizing radiation results in extensive damage to biological systems. The massive amount of ionizing radiation from nuclear accidents, radiation therapy (RT), space exploration, and the nuclear battlefield leads to damage to biological systems. Radiation injuries, such as inflammation, fibrosis, and atrophy, are characterized by genomic instability, apoptosis, necrosis, and oncogenic transformation, mediated by the activation or inhibition of specific signaling pathways. Exposure of tumors or normal cells to different doses of ionizing radiation could lead to the generation of free radical species, which can release signal mediators and lead to harmful effects. Although previous FDA-approved agents effectively mitigate radiation-associated toxicities, their use is limited due to their high cellular toxicities. Preclinical and clinical findings reveal that phytochemicals derived from plants that exhibit potent antioxidant activities efficiently target several signaling pathways. This review examined the prospective roles played by some phytochemicals in altering signal pathways associated with radiation response.

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