[Clinical observation on Jiquan (HT 1) for treatment of cervical spondylosis of nerve root type].

Objective: To observe acupuncture at Jiquan (HT 1) with different manipulations for improvement of abnormal sensation of the upper limb induced by cervical spondylosis of nerve root type.

Methods: One hundred and seven cases were randomly divided into 3 groups. The lifting-thrusting group (n = 37) were treated with acupuncture at Jiquan (HT 1) with lifting-thrusting manipulation, the twirling group (n = 36) with acupuncture at Jiquan (HT 1) with twirling manipulation and the routine needling group (n = 34) with acupuncture at C4 - T1 Jiaji (EX-B 2), Quchi (LI 11).

Spatial variability of organochlorine pesticides (DDTs and HCHs) in surface soils from the alluvial region of Beijing, China.

The spatial variability in the concentrations of 1,2,3,4,5,6-hexachlorocyclohexane (HCH) and 1,1,1-trichloro-2,2-bis-(p-chlorophenyl) ethane (DDT) in surface soils was studied on the basis of the analysis of 131 soil samples collected from the surface layer (0-20 cm depth) of the alluvial region of Beijing, China. The concentrations of total HCHs (including alpha-, beta-, gamma-, and delta-isomers) and total DDTs (including p,p'-DDT, p,p'-DDD, p,p'-DDE, and o,p'-DDT) in the surface soils tested were in the range from nondetectable to 31.72 microg/kg dry soil, with a mean value of 0.