[Development and clinical application of a new reduction device for the treatment of tibial plateau fracture under arthroscopic monitoring].

Objective: To develop a reduction device for the arthroscopy-assisted treatment of tibial plateau fracture and explore its clinical efficacy.

Methods: From May 2018 to September 2019, 21 patients with tibial plateau fracture were treated, including 17 males and 4 females. Their ages ranged from 18 to 55 years old with an average of (38.

Comparative Study on the Elucidation of Sedimentary Phosphorus Species Using Two Methods, the SMT and SEDEX Methods.

Sedimentary phosphorus (P) forms are important representatives of P sources and their bioavailability as well as the potential of sediments to release P in water. In this study, surface sediments along a transect of the Changjiang Estuary and two transects along the Andong salt marsh in the southwest of Hangzhou Bay were subjected to the elucidation of sedimentary P species using the standards, measurements, and testing (SMT) and sequential extraction (SEDEX) methods. The results showed that the mean sedimentary P forms elucidated by the SMT method were as follows: organic P (OP; ∼11-14 mg/kg; ∼30-45% of total P; TP) > apatite P (∼5-15 mg/kg; ∼21-36% TP) > Fe/Al-P (∼8-14 mg/kg; ∼31-34% TP), with inorganic P (IP) composing 54-70% of TP.

[Repair effect of bFGF combined with bone marrow mesenchymal stem cells on spinal cord injury in rats].

Objective: To observe the repair effect of bone marrow mesenchymal stem cells (BMSCs) combined with basic fibroblast growth factor (bFGF) on spinal cord injury in rats and explore its mechanism.

Methods: SD rat BMSCs were obtained by serum culture technique. Eighty healthy 6-week-old male SD rats(weight about 240 g) were randomly divided into 4 groups with 20 each.

[Relationship of occupational stress and negative life events with low birth weight].

Objective: To explore the influence of occupational stress and negative life events on low birth weight (LBW).

Methods: 1:1 matched case-control study was employed, in which 438 singleton LBW infants with birth weight less than 2500 g (their pregnancy term being 28 to 42 weeks) served as case group while 438 with singleton term normal birth weight served as control group matched by sex, delivery time and hospital. All of their mothers were inquired by well trained investigators about their socio-demographic characteristics, occupational stress, and negative life events occurring in different pregnancy term.