Search

Fault zones are usually filled with fault gouge and accompanied by fault water. The coupled effect of fault gouge and water significantly impacts the slip behavior of the fault, which may weaken the fault structure and further induce rupture propagation and earthquakes. In this study, we carried out a laboratory experiment to investigate the fluid-induced slip behavior of fault filled with gouge. The friction evolution characteristic associated with fluid pressure and effective stress was investigated during the slip process. In addition, the role transformation process of the gouge on the slip behavior of fault was revealed. The experimental result indicates that the friction on the filled fault surface is significantly affected by fault gouge. The rupture of the gouge promotes fault slip and the fluid pressure plays a vital role in the initiation of fault slip. The fault gouge enhances the shearing strength of the fault and acts as a barrier before the initial slip under fluid injection. Nevertheless, the fault gouge would accelerate the fault slip and transform into lubricant after the initial slip.

Abstract This review used traditional and network meta-analyses (NMA) to conduct a comprehensive study of antithrombotic therapies in children with thromboembolic disease. We searched the PubMed, Embase, Cochrane Library, Web of Science and ClinicalTrials.gov databases from their inception to 26 February, 2023. And we finally included 16 randomized controlled trials. In the prevention of thromboembolic events (TEs), the use of anticoagulants had a low risk of TEs (relative risk (RR) 0.73, 95% CI 0.56 to 0.94) and a high risk of minor bleeding (RR 1.43, 95% CI 1.09 to 1.86) compared with no anticoagulants. In the treatment of TEs, direct oral anticoagulants (DOACs) were not inferior to standard anticoagulation in terms of efficacy and safety outcomes. In NMA, rivaroxaban and apixaban showed the lowest risk for TEs and major or clinically relevant nonmajor bleeding. According to the overall assessment of efficacy and safety, dabigatran may be the best choice for children with thromboembolic disease. The results of our study will provide references and suggestions for clinical drug selection.

Researching and developing of ultra-wideband capability and high light transmittance have been hot issues in the field of new artificial electromagnetic stealth material. In this paper, a novel transparent metamaterial absorber, made of resistive films and glass, has been presented. The simulation results show that, under the incidence of plane wave, the absorber realizes high absorption during frequency range from 3.5 GHz to 18.5 GHz while keeping insensitive to polarization. A prototype has been fabricated and tested, and the measurement results are in good consistent with simulation. Along with its high transmittance and superior absorption, we expect that the absorber has great potential applications in RCS (Radar Cross Section) reduction and electromagnetic shielding. [ABSTRACT FROM AUTHOR]

[Objectives] This study aimed to study the effect of ethephon treatment on the growth of two main grape varieties Kyoho and Shine-Muscat. [Methods] Two-year-old Kyoho and Shine-Muscat grape plants transplanted in the film-covered steel-framed greenhouse were used as the test materials. They were pruned horizontally and linearly. In the late growth period, the new shoots were sprayed with ethephon (1 500 x). During the germination period, 10 plants were randomly selected for each variety to investigate the germination situation. Before flowering, 20 new shoots with uniform growth were randomly selected for each variety to investigate the growth. During the fruit maturity period, 10 clusters of fruits were randomly selected for each variety to determine the related indices of fruit quality. [Results] After the treatment with ethephon, the germination, new shoot growth and fruit quality differed between the two varieties. Overall, the thickness of main stem, main vine and new shoot of Shine-Muscat was greater than that of Kyoho, and the length of new shoot of Kyoho was significantly greater than that of Shine-Muscat. [Conclusions] The growth of Shine-Muscat was more robust. There was little difference in the ear weight of natural fruit setting between the two varieties. Shine-Muscat showed high sugar and low acid contents than Kyoho. [ABSTRACT FROM AUTHOR]