Potential effects of exploiting the Yunfu pyrite mine (southern China) on soil: evidence from analyzing trace elements in surface soil.

Trace element contamination caused by mining is a serious environmental problem. The potential effects of exploiting the Yunfu pyrite mine (southern China) on soil were investigated by determining trace elements in 56 surface soil samples from the vicinity of the Yunfu pyrite mine. The samples were acid dissolved and measured by an inductively coupled plasma mass spectrometry (ICP-MS).

Biochemical and hemostatic mechanism of a novel thrombin-like enzyme.

Thrombin-like enzyme (TLE) plays a significant role in vessel injury hemostasis. A novel snake venom TLE (Agacutin) was purified from Agkistrodon Acutus snake venom. Structural analysis indicated that Agacutin is a heterodimer that has a MW of 29,402 Da, a pI value of 5.

Piperidinium bis-(2-oxidobenzoato-κO,O)borate.

The asymmetric unit of the title compound, C(5)H(12)N(+)·C(14)H(8)BO(6) (-) or [C(5)H(12)N][BO(4)(C(7)H(4)O)(2)], contains two piperidinium cations and two bis-(salicylato)borate anions. The coordination geometries around the B atoms are distorted tetra-hedral. In the two mol-ecules, the aromatic rings are oriented at dihedral angles of 76.

[Identification of the related gene of mouse tolerant to exposure to perfluoroisobutylene by DDRT-PCR].

Objective: The mice surviving acute exposure to low dose of perfluoroisobutylene (PFIB) could tolerant to lethal dose of PFIB. Discovering the gene related with the tolerance would be significant to find preventive agents for PFIB.

Methods: By static exposure to PFIB for 3 times, the survival animals could tolerate to lethal dose of PFIB.

[Isolation, purification and identification of rat brain microvessels].

Aim: To isolate and purify the brain microvessels without intact neural cells used for cloning specific gene at the blood-brain-barrier.

Methods: Magnetic beads ranging from 200-500 nm were synthesized and infused into cerebral spheres through carotid arteries. The brain tissues were dissected by mechanic and enzymatic methods, and sieved to discharge tissues and large blood vessels.