Research Progress on Biological Evidence Identification in Fire Scenes.

Biological evidence is relatively common evidence in criminal cases, and it has strong probative power because it carries DNA information for individual identification. At the scene of fire-related cases, the complex thermal environment, the escape of trapped people, the firefighting and rescue operations, and the deliberate destruction of criminal suspects will all affect the biological evidence in the fire scene. Scholars at home and abroad have explored and studied the effectiveness of biological evidence identification in fire scenes, and found that the blood stains, semen stains, bones, etc.

Evaluation of anti-fatigue activity of total saponins of Radix notoginseng.

Background & Objectives: Several biological activities of total saponins of Radix notoginseng (TSRN), a traditional Chinese medicine, have been reported. The present study was carried out to investigate anti-fatigue activity of TSRN in male Kunming mice.

Methods: Mice were divided into four groups.

Antitumor and immunomodulatory activity of polysaccharides from the root of Limonium sinense Kuntze.

Limonium sinense (Girard) Kuntze is a traditional Chinese folk medicine used for the treatment of fever, hemorrhage, hepatitis and other disorders. The study focused on the antitumor and immunomodulatory activities of L. sinense polysaccharides (LSP) which was obtained from the root of the plant.

The pollution control of fluorine and arsenic in roasted corn in "coal-burning" fluorosis area Yunnan, China.

Pilot experiments were carried out to reduce the fluorine (F) and arsenic (As) pollution of roasted corn dried by open ovens in "coal-burning" fluorosis area Yunnan, China. The results indicated that the average emission amount of F and As in briquettes in experimental group were 29.20mg/kg and 0.

[Determination of total selenium in water by hydride generation atomic fluorescence spectrometry].

In order to establish a rapid and accurate hydride generation-atomic fluorescence spectrometry method for the determination of selenium content in water samples, the influence factors on Se nitrolysis in the water such as nitrolysis temperature and the amount of hydrochloric acid were studied. The authors determined a simple and practical test method that is to add 3 mL hydrochloric acid at 3 degrees C. We measured the precision and accuracy of the method by the standard liquid of 3, 6 and 10 micro x L(-1), and the test results were 2.