[Research on Spectrum Radiation Characteristics of a New Type Infrared/ Ultraviolet Dual Color Decoy].

The advantage of traditional MTV infrared decoys which are mainly consist of magnesium, Teflon and VITON is that it emits high radiant energy, so it is an effective countermeasure to traditional seekers which seek the target by heat source. The spectral radiant intensity which generated from high temperature combustion of MTV infrared decoys in near infrared region and ultraviolet band is very high, and that in Mid-IR region is relative lower, however the radiant intensity of real jet fighter in ultraviolet band is low and the infrared radiant intensity ratio of Mid-IR to near IR band is greater than 1. Thus, the traditional MTV infrared decoys are hardly able to counter the seekers equipped with dual color combined guidance system.

The relationship between polymorphisms of interleukin-4 gene and silicosis.

Objective: To explore the relationship between polymorphisms of interleukin-4 (IL-4) gene (-33, +45, intron3, +429, +448) and the susceptibility of silicosis.

Methods: A case-control study was carried out. 101 silicosis patients were selected as cases.

[Case-control study of relationship between polymorphisms of interleukin-4 gene and susceptibility of silicosis].

Objective: To explore the relationship between polymorphisms of interleukin-4 (IL-4) gene (-33, +45, VNTR, +429, +448) and the susceptibility of silicosis.

Methods: In a case-control study, the case group consisted of 101 patients with silicosis, and was matched with the control group (121 workers without silicosis), according to the age, sex, nationality, working place, exposure to dust. The polymorphisms of IL-4 (five locus) detected by the method of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) techniques.