Direct Nanosecond Multiframe Imaging of Irreversible Dynamics in 4D Electron Microscopy.

Irreversible ultrafast events are prevalent in nature, yet their capture in real time poses significant challenges. Traditional single-shot imaging technologies, which utilize a single optical pump and single delayed electron probe, offer high spatiotemporal resolution but fail to capture the entire dynamic evolutions. Here, we introduce a novel imaging method employing a single optical pump and delayed multiple electron probes. This approach, facilitated by an innovative deflector in ultrafast electron microscopy, enables the acquisition of nine frames per exposure, paving the way for statistical and quantitative analyses. We have developed an algorithm that corrects frame-by-frame distortions, realizing a cross-correlation enhancement of ∼26%. Achieving ∼12 nm and 20 ns resolution, our method allows for the comprehensive visualization of laser-induced behaviors in Au nanoparticles, including merging, jumping, and collision processes. Our results demonstrate the capability of this multiframe imaging technique to document irreversible processes across materials science and biology with unprecedented nanometer-nanosecond precision.

[Combination of canales sacralis drop with acupotomy dissolution in treatment of discogenic lumbocrural pain].

OBJECTIVE: To evaluate the combination of drop in canales sacralis with acupotomy dissolution in the treatment of lumbocrural pain caused by slipped discs. METHODS: One hundred and thirty-nine patients with lumbocrural pain caused by slipped discs were randomly divided into 3 groups: cases in Group A were treated by the drop in canales sacralis, in Group B by acupotomy dissolution and in Group C by the combination of canales sacralis drop with acupotomy dissolution. MacNab score and VAS score were assayed before treatment and 1 week, 3 and 6 months after treatment. RESULT: The effective rates in Groups A, B and C at 1 week, 3 and 6 months after treatment were 71.4%, 75.5%, 79.6%; 75.0%, 79.6%, 81.8% and 89.1%, 91.3%, 93.5%, respectively (P < 0.01). The pain intensity in Group C was reduced more markedly at different time points after treatment than that in Group A and Group B (P < 0.01). CONCLUSION: The combination of canales sacralis drop with acupotomy dissolution is superior to each method used alone in treatment of lumbocrural pain caused by slipped discs in the short-and long-term.

Tumour necrosis factor 308 polymorphisms and hepatocellular carcinoma risk: a meta-analysis.

BACKGROUND/AIMS: To investigate the association of the common polymorphisms comprehensively defining the genetic variability of the TNFA-308G > A with HCC risk. METHODOLOGY: We performed a meta-analysis of 9 published studies that included 1362 cancer cases and 2426 controls. We used random-effect (RE) or fixed-effect (FE) odds ratios (ORs) and 95% confidence intervals (CIs) according to the studies' heterogeneity to assess the strength of the associations. RESULTS: The overall results suggested that the TNFA-308 AA and AG variant genotypes were associated with a significantly increased risk of HCC in different genetic models (homozygote comparison: OR = 2.51,95% CI: 1.11-5.67, p heterogeneity = 0.905; heterozygote comparison: OR = 1.58, 95% CI: 1.00-2.50, p heterogeneity = 0.001; dominant model comparison: OR = 1.59, 95% CI: 1.00-2.53, p heterogeneity = 0.000; recessive model comparison: OR = 2.27, 95% CI: 1.01-5.12, p heterogeneity = 0.962; complete overdominant model comparison: OR = 1.57, 95% CI: 1.00-2.45. P heterogeneity = 0.001; and allele comparison: OR = 1.52, 95% CI: 1.01-2.28, p heterogeneity = 0.002. There was at some extent heterogeneity when analyses were performed in some models, and there was no publication bias. CONCLUSIONS: This meta-analysis supported that the TNFA-308 A allele is a risk factor for HCC development.