New strategies for biofilm inhibition are becoming highly necessary because of the concerns to synthetic additives. As gallic acid (GA) is a hydrolysated natural product tannin in Chinese gall, this research studied effects GA on growth and formation bacteria (Escherichia coli [Gram-negative] Streptococcus mutans [Gram-positive]) under different conditions, such as nutrient levels, temperatures (25 37 °C) incubation times (24 48 h). The minimum antimicrobial concentration against two...

Abstract Black carbon (BC) plays an important role on the global and regional climate, whereas there are significant uncertainties its optical properties. Among various properties, Ångström exponent (AE) indicates spectral variation of particle‐optic interaction is widely used to understand aerosol We consider influence BC geometry properties assess sensitivity AE particle size distribution. The fractal aggregates with different dimensions represent realistic particles, popular equivalent...

Resveratrol (RES) is a polyphenol phytoalexin from plants, which has been reported to possess variety of biological effects. The properties RES on human natural killer (NK) cells were assessed in this study. Results showed that concentration-dependent biphasic effects NK cells. In high concentration (50 μM), can inhibit viability and promoted apoptosis lymphoblastoid T (Jurkat) cells, may affect the caspase signaling pathway. Jurkat more sensitive than caused cell death. However, when range...

Surface-imprinted microspheres were controllably synthesized using ionic liquid-functionalized with a highly cross-linked raspberry-like structure as the matrix via surface molecular self-assembly and precipitation polymerization in aqueous media at room temperature. An immunostimulating hexapeptide from human (IHH) medical properties was chosen template molecule preparation of different molecularly imprinted (MIMs). The experiment process tracked as-prepared well characterized. Results...

Abstract In this study, mechanical mechanism analyses of hole cut blasting and in situ tests using different cutting programs were conducted to investigate the under influence complicated geological conditions its excavation effect. The was evaluated background medium‐length test a typical coal‐rock roadway Xiayukou coal mine Hancheng mining area Western China improve efficiency roadways. Test results indicated that rock clamping action is remarkably enhanced when depth holes, which are...

New IL-based MIPs were prepared using ion-pair dummy template imprinting which confined charged monomers in the cavities.

This study was based on a long-term field trial of three different greenhouse vegetable growing systems which were started in March 2002. Fertilizer nitrogen and organic carbon inputs treatments the spring 2015 as follows: (1) conventional system (CON): cow manure dry chicken composts (about 146 kg N ha−1 1483 C ha−1) urea 525 ha−1); (2) low-input (LOW): 325 3160 263 (3) (ORG): 651 5456 ha−1). N2O CO2 fluxes monitored season (from to August) using static chamber gas chromatography...

Microseismic (MS) monitoring is an important and commonly used geophysical method in coal mines to predict rock burst which has great influence on safety production. MS technology analysis of the whole mine or working face have been matured, but its use heading faces not mature due small disturbances narrow layout spaces. To carry out early warning face, signal recognition must be adequately performed first, objects indicators obtained. Through field tests systems at 117 track gateway...

The optimum design of deep-coal pillar width at the gob-side entry is key to control surrounding rocks.Existing studies on this issue are based distribution law mining abutment pressure without considering principal stress difference distribution, which related shear failure rock.This study aimed optimize difference.With FLAC 3D numerical simulation, characteristics in side field deep face and laws rock under different coal were explored.According difference, mass goaf could be divided into...

Ad-hoc networks are promising complements for the infrastructure based network under disastrous scenarios. However, due to heterogeneous surrounding environment of each user, channel availability user may be quite different. Cognitive radio emerges as a technology enable two users communicate different availability, by opportunistically accessing available channels through dynamically configuring transmission parameters. In cognitive network, secondary (SUs) need sense spectrum obtain...

Cognitive radio is a promising technology to solve the spectrum scarcity problem. In cognitive network, secondary user (SU) first senses specific range of get its available channels and two SUs need rendezvous on common channel establish physical link for communications. The band allocated existing wireless services very wide. However, when SU works in wideband spectrum, increasing delay energy consumption sensing time will be serious All papers only focus designing efficient algorithms...

ABSTRACT Existing rock pressure theory, with the pressure-plastic zone as core, cannot reveal nonuniform large deformation mechanism of surrounding in a deep roadway. To address this problem, 11030 gob-side entry driving roadway Zhaogu No. 2 Mine is used an example, conjunction elastoplastic mechanics theoretical analysis, to study butterfly plastic region and direction leaf homogeneous circular In addition, finite-element method was environmental characteristics stress field before...

There are several factors influencing the slope stability of open pit mine, and common methods can be divided into subjective weighting method objective method.In this paper, we make comprehensive evaluation by using AHP entropy weight method.First all, first level indicators, to determine then use calculate influence factors, conclusion has certain reliability scientific nature.Through field monitoring, get membership function each index assignment trapezoid distribution.Following principle...

Seismic source location is the most fundamental and important problem in microseismic monitoring. However, only P wave has been mostly applied existing monitoring networks, with low accuracy poor stability of result for events occurring beyond networks. The seismic was implemented using S this study to expand effective area a network improve its nearby network. Then, mechanism P-S revealed through theoretical derivation analysis. Subsequently, program development numerical simulation were...