Adsorption of Ultra-High Crosslinked Resin on Waste Water from Benzoic Acid and Sorbic Acid

Aiming at the simulated production wastewater of benzoic acid and sorbic acid, the adsorption and desorption resource recovery system of ultra-high crosslinked resin ZH-01 was designed and developed, and the influence of ZH-01 on the removal of benzoic acid and sorbic acid production wastewater was studied. The results showed that the removal rates of benzoic acid and sorbic acid were 94.74% and 94.9%, respectively, and the removal rate of CODcr was as high as 91.2%. In addition, the adsorption properties of ZH-01 on benzoic acid and sorbic acid were investigated. When sodium hydroxide was used for resin desorption, the effects of temperature, desorption agent ratio and desorption velocity on resin desorption were investigated. Benzoic acid and sorbic acid were recovered to the maximum extent, and the recycling of benzoic acid and sorbic acid in waste water was realized. Keywords Ultra high crosslinked resin ZH-01; Simulated production wastewater with benzoic acid and sorbic acid; Resource recovery. DOI: 10.7176/JRDM/57-05 Publication date:July 31st 201

Study on Treatment of Secondary Sedimentation Wastewater by Sodium Hypochlorite Oxidation, Activated Carbon Adsorption and Coagulation Precipitation

In this paper, CODCr index was adopted as the test item, and the wastewater from the secondary sedimentation tank of a sewage treatment plant selected was treated by the method of "sodium hypochlorite oxidation - activated carbon adsorption - coagulation precipitation". The results showed that the removal rate of CODCr reached 57.3% by the treatment of "sodium hypochlorite oxidation - activated carbon adsorption - coagulation precipitation". Therefore, this method can improve the removal rate of CODCr, can make the wastewater discharging standard, and for the project provides data support to better treatment of industrial wastewater. Keywords Secondary settling tank; CODCr; Fenton oxidation; Sodium hypochlorite oxidation; Treat reach the standard DOI: 10.7176/CER/11-6-01 Publication date:July 31st 201

Treatment of Secondary Sedimentation Tank Wastewater by Fenton Oxidation-Neutralization-Coagulation Sedimentation

In this paper, the CODCr index is used as the detection item, and the wastewater from the secondary clarifier of a sewage treatment plant is treated by "Fenton oxidation-neutralization-coagulation sedimentation" method. The results showed that the removal rate of CODCr reached 73.4% by "Fenton oxidation-neutralization-coagulation precipitation" method. It can be seen that this method can make the wastewater discharge up to the standard and provide data support for better treatment of industrial wastewater in engineering. Keywords Secondary sedimentation tank; CODCr; Fenton oxidation; Up-to-standard emissions DOI: 10.7176/JEES/9-7-01 Publication date:July 31st 201

Tunable plasmonic reflection by bound 1D electron states in a 2D Dirac metal

We show that surface plasmons of a two-dimensional Dirac metal such as graphene can be reflected by line-like perturbations hosting one-dimensional electron states. The reflection originates from a strong enhancement of the local optical conductivity caused by optical transitions involving these bound states. We propose that the bound states can be systematically created, controlled, and liquidated by an ultranarrow electrostatic gate. Using infrared nanoimaging, we obtain experimental evidence for the locally enhanced conductivity of graphene induced by a carbon nanotube gate, which supports this theoretical concept.Comment: 14 pages, 12 figures, submitted to PR

On the second order of Zeta functional equations for Riemann Type

This paper discuss a new class of functional equations by using both Poisson summation formula and Jacobi type theta a function. The class of Riemann type functional equations are derived from self-reciprocal probability density functions. Finally, the second order Zeta functional equations for Riemann type is also investigated.Comment: 13 page

Spin asymmetry and dipole moments in τ\tau-pair production with ultraperipheral heavy ion collisions

The anomalous magnetic (MDM) and electric (EDM) dipole moments of the $\tau$ lepton serve as crucial indicators of new physics beyond the Standard Model. Leveraging azimuthal angular asymmetry as a novel tool in ultraperipheral collisions (UPCs), we attain unparalleled precision in the study of these key properties. Driven by the highly linear polarization of coherent photons, this method uniquely enables both the MDM and EDM to contribute to the $\cos2\phi$ angular distribution in similar magnitudes. Importantly, our approach substantially narrows the parameter space, excluding more than half of it compared to expected UPC-based measurements reliant solely on the total cross-section. This method not only provides improved constraints but also minimizes the need for additional theoretical assumptions.Comment: 6 pages, 3 figure

Effects of Shell on Bore center Annular Shaped Charges Formation and Penetrating into Steel Targets

Annular shaped charge can efficiently create large penetration diameter, which can solve the problem of small penetration diameter of a traditional shaped charge, and thus meeting the requirements of large penetration diameter in some specific situations. In this paper, the influence of five kinds shell structures, i.e. no shell, aluminum shell with thickness of 2.0 mm and steel shell with thickness of 2.0 mm, 3.0 mm and 4.0 mm, on bore-center annular shaped charges (BCASCs) formation and penetrating steel targets was investigated by numerical simulations and experiments. The numerical simulation results are in good agreement with the experimental results. The results showed that, from no shell to aluminum shell of 2.0 mm and then to steel shell of 2.0 mm, 3.0 mm and 4.0 mm for BCASCs, the diameter and radial velocity of projectile head decrease, the axial velocity of BCASC projectiles increases gradually, the penetration diameter of the targets decreases, and the penetration depth increases. The penetration diameter caused by the BCASC with no shell is the largest, being 116.0 mm (1.16D), D is the charge diameter. The penetration depth caused by the BCASC with steel shell of 4.0 mm thickness is the deepest, being 76.4 mm (0.76D)

A multi-user selective undo/redo approach for collaborative CAD systems

AbstractThe engineering design process is a creative process, and the designers must repeatedly apply Undo/Redo operations to modify CAD models to explore new solutions. Undo/Redo has become one of most important functions in interactive graphics and CAD systems. Undo/Redo in a collaborative CAD system is also very helpful for collaborative awareness among a group of cooperative designers to eliminate misunderstanding and to recover from design error. However, Undo/Redo in a collaborative CAD system is much more complicated. This is because a single erroneous operation is propagated to other remote sites, and operations are interleaved at different sites. This paper presents a multi-user selective Undo/Redo approach in full distributed collaborative CAD systems. We use site ID and State Vectors to locate the Undo/Redo target at each site. By analyzing the composition of the complex CAD model, a tree-like structure called Feature Combination Hierarchy is presented to describe the decomposition of a CAD model. Based on this structure, the dependency relationship among features is clarified. B-Rep re-evaluation is simplified with the assistance of the Feature Combination Hierarchy. It can be proven that the proposed Undo/Redo approach satisfies the intention preservation and consistency maintenance correctness criteria for collaborative systems