This report describes a prediction technique for the calculation of the field strength of radio waves over irregular terrain paths. The concept of an "equivalent rounded obstacle" is used to account for radio propagation losses over various possible irregular terrain shapes, including shapes which cannot easily be described geometrically. The technique replaces an arbitrary terrain profile with...

One of the Army’s primary research aims is to improve the survivability of soldiers in combat zones. One area of concern is the possibility of attack by chemical warfare agents. Current protective gear, while providing excellent protection, is heavy, bulky, and reduces the combat effectiveness of the wearer. Ideally, the next generation of protective gear will be no more cumbersome than the sta...

HIGHLIGHTS Phenolic derivatives exert a genotoxic effect on the oral mucosa. The use of personal protective equipment and/or exhaust laminar flow hood reduces effects. Long-term exposure to agents can be measured by mucosa samples.

Low-dose ionizing radiation (LDIR) can induce radio-resistance to following high dose radiation in various mammalian cells. The protective role of LDIR has been thought to be associated with the overall outcomes of cancer radiotherapy. NF-E2 related factor 2 (Nrf2) is a transcription factor that plays pivotal roles in maintaining cellular oxidative equilibrium. Since oxidative stress has been i...

Pathogen-associated molecular patterns decisively influence antiviral immune responses, whereas the contribution of endogenous signals of tissue damage, also known as damage-associated molecular patterns or alarmins, remains ill defined. We show that interleukin-33 (IL-33), an alarmin released from necrotic cells, is necessary for potent CD8(+) T cell (CTL) responses to replicating, prototypic ...

background: ionizing radiation irradiated from iodine-131 can induce dna damage and cell death. the cellular dna damage is the cause of mutation and cancer. the micronucleus assay in polychromatic erythrocytes was applied to assess the radio-protective effect of turmeric extract on genotoxic potential of iodine therapy. materials and methods: thirty six male albino rats were randomly divided in...

Background: Melatonin is a free radical scavenger. It has also antioxidant effects through its stimulatory actions on antioxidant system. Objective: We conducted this study to examine the effect of different oral doses of melatonin on liver tissue. Methods: We used 42 rats—6 rats in each group. Group I served as the control group; group II rats were pretreated with only melatonin; group III w...

A mould release agent is an additive that makes the moulded product easy to detach from mould, it forms a protective film on ensure surface quality of mould. Mold agents are divided into water-based agents, oil-based and powder-based agents. Water-based widely used because they have advantages low price, good effect, green environment protection, smooth casting surface, air tightness automatici...

Radio-protectors are agents that protect human cells and tissues from undesirable effects of ionizing radiation by mainly scavenging radiation-induced free radicals. Although chemical radio-protectors diminish these deleterious side effects they induce a number of unwanted effects on humans such as blood pressure modifications, vomiting, nausea, and both local and generalized cutaneous reaction...

Objective: Recent studies have begun to look at the impact of the economic crisis on mental health. This paper tries to summarize the most important findings with regard to effects of the economic crisis on mental health in Spain on the basis of a comprehensive literature review. Results: Most of the studies agree on the negative consequences on mental health of the Spanish economic crisis. A d...