Hong Shan Capsule (HSC), a crude drug of 11 medicinal herbs, was used in clinical practice for the treatment of radiation injuries in China. In this study, we investigated its protection in rats against acute lethal total-body irradiation (TBI). Pre-administration of HSC reduced the radiation sickness characteristics, while increasing the 30-day survival of the irradiated rats. Administration o...

background: precarious employment is a major social determinant of health and health inequalities with effects beyond the health of workers. objective: to investigate the association between precarious employment and sickness absence in 4 nordic countries, denmark, finland, norway, and sweden. methods: logistic regression analyses were conducted separately for each country on data from 4186 res...

We report the design of microwave waveguide devices based on complementary media. Various kinds of waveguide devices that possess nearly 100% transmission efficiency are proposed, such as waveguide bends, splitters, connectors, and shifters. Compared with previous work on waveguide devices of low reflection and minimized distortion based on transformation optics, our transform media are homogen...

In this Letter, we demonstrate theoretically that electromagnetic waves can be "squeezed" and tunneled through very narrow channels filled with epsilon-near-zero (ENZ) materials. We show that the incoming planar wave front is replicated at the output interface, independently of the specific geometry of the channel. A closed analytical formula is derived for the scattering parameters of a partic...

We introduce a new family of (2+1)D light beams with pre-engineered abruptly autofocusing properties. These beams have a circularly symmetric input profile that develops outward of a dark disk and oscillates radially as a sublinear-chirp signal, creating a series of concentric intensity rings with gradually decreasing width. The light rays involved in this process form a caustic surface of revo...

Globally, it is estimated that > 140 million people live at a high altitude (HA), defined as > 2,500 m (8,200 ft), and that countless others sojourn to the mountains for work, travel, and sport. The distribution of exposure to HA is worldwide, including 35 million in the Andes and > 80 million in Asia, including China and central Asia. HA stress primarily is due to the hypoxia of low atmospheri...

Mass exposure to radiologic substances presents a unique challenge to the entire response effort, which includes health care professionals, law enforcement personnel, and other first responders. Recognition of signs and symptoms of exposure, and focus on removal and decontamination are priorities of management. Radiation injuries require specialized equipment and access to experts. Patients can...

The purpose of this letter is to call attention to the availability of a technical report on the chronic radiation syndrome (CRS) which may be obtained from the Armed Forces Radiobiology Research Institute (AFRRI). Pursuant to facilitating communications between radiation scientists in the United States and the former Soviet Union, AFRRI and the Defense Nuclear Agency (DNA) have provided small ...

Cellular therapy of hematopoietic acute radiation syndrome is currently at the forefront scientific interest due to high regenerative potential stem cells, their anti-inflammatory and antifibrotic effects. Stem cells have a ability stimulate proliferation differentiation cells. It has been shown that after administration are able migrate lesions under influence chemotactic factors. At same time...