The effect of early-onset sepsis on retinopathy of prematurity in extremely premature infants based on propensity score matching.

To investigate the effects of early-onset sepsis (EOS) on retinopathy of prematurity (ROP) in extremely premature infants (EPIs) by using propensity score matching (PSM). Clinical data of 591 EPIs admitted to NICU, Senior Department of Pediatric, PLA General Hospital from May 1, 2015 to May 1, 2022 were retrospectively analyzed. They were divided into an EOS group and a non-EOS group according to whether they had confirmed EOS or not.

Impact of premature rupture of membranes on clinical outcomes of extremely premature infants: A propensity score matching study.

Background: Premature rupture of membranes (PROM) is a common cause of extremely premature infants (EPIs) and also leads to adverse preterm complications. However, the effect of PROM on EPIs remains contradictory. This study used propensity score matching (PSM) to adjust the baseline characteristics to explore the impact of PROM on clinical outcomes of extremely premature infants (EPIs).

[Research Progress of SOA Formation from Anthropogenic VOCs Under Complex Pollution Condition].

Although the air quality in China has been greatly improved in recent years, the air pollution remains severe. The annual mean PM concentrations have not met the second grade of the National Ambient Air Quality Standards in China and are still much higher than the guideline value of the World Health Organization. Thus, the PM concentration needs to be further reduced.

[Sewage sludge conditioning by bioleaching combined with Fenton-like oxidation].

Bioleaching combined with Fenton-like oxidation was used to condition sewage sludge. The results showed that it took approximately 1 d to decrease pH from 6.9 to 2.

Products and kinetics of the heterogeneous reaction of particulate ametryn with NO3 radicals.

As a renowned s-triazine herbicide, ametryn is worldwide emitted into the atmosphere in both gaseous and particulate phases via spray drifts from treatments and post application emissions, but its chemical degradation in the atmosphere has not been well characterized. In this study, the heterogeneous kinetics of particulate ametryn with NO3 radicals were investigated with a mixed-phase relative rate method. A vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS) and an atmospheric gas analysis mass spectrometer were synchronously used to online monitor the decays of particulate ametryn and gas-phase isoprene.

[Effect of Erigeron Breviscapus on the expression of OPG/RANKL/RANK in osteoblasts and pre-osteoclasts in vitro].

Objective: To study the effect of Erigeron Breviscapus (EB) at different concentrations and different intervention time points on the mRNA and protein expression of OPG/RANKL/RANK in MG63 osteoblast-like cells and RAW264. 7 pre-osteoclast cells cultured in vitro, thus exploring roles EB played in bone rebuilding and its mechanisms.

Methods: MG63 osteoblast-like cells and RAW264.

[Sewage sludge conditioning by bioleaching-dual PAC and PAM addition].

Bioleaching-dual polyaluminum chloride (PAC) and polyacrylamide (PAM) addition was used to condition sewage sludge. The results showed that FeSO4 x 7H2O addition improved the bioleaching rate obviously with a fixed sulfur power dosage of 3 g x L(-1); when the FeSO4 x 7H2O dosage was 8 g x L(-1), the bioleaching lasted 1.5 d to decrease the sludge pH below 2.

Very high frequency (beyond 100 MHz) PZT kerfless linear arrays.

This paper presents the design, fabrication, and measurements of very high frequency kerfless linear arrays prepared from PZT film and PZT bulk material. A 12-microm PZT thick film fabricated from PZT-5H powder/solution composite and a piece of 15-microm PZT-5H sheet were used to fabricate 32-element kerfless high-frequency linear arrays with photolithography. The PZT thick film was prepared by spin-coating of PZT sol-gel composite solution.

[Effect of erigeron breviscapus on the expression of vascular endothelial growth factor in the periodontal tissues of rabbits during orthodontic tooth movement].

Objective: To detect the effect of erigeron breviscapus on the expression of vascular endothelial growth factor (VEGF) in the periodontal tissues during orthodontic tooth movement.

Methods: 45 rabbits were divided into 3 groups (groups A, B and C). Groups A and B included experimental group of 1, 3, 7 and 14 days respectively.