Factors Influencing Coking Waste Water by Three-Dimensional Electrode

2013 ◽  
Vol 750-752 ◽  
pp. 1339-1342
Author(s):  
Ya Nan Jia ◽  
Su Ju Hao ◽  
Wu Feng Jiang ◽  
Yu Zhu Zhang ◽  
Lei Zhang

Three-dimensional electrode treating coking waste water was studied in the experiment, which is widely used in treating organic waste water. The high carbon-bearing metallized pellets was used as the third electrode of three-dimensional electrode reactor. Factors of three-dimensional electrode including residence time, voltage and air flux were studied. It was shown that all of the above mentioned factors have effect on coking wastewater. And also the optimal parameters were obtained in the experiment.

2013 ◽  
Vol 750-752 ◽  
pp. 1437-1440
Author(s):  
Ya Nan Jia ◽  
Wu Feng Jiang ◽  
Su Ju Hao ◽  
Yu Zhu Zhang ◽  
Lei Zhang

The feasibility of coking waste water treatment by three-dimensional electrode was studied in the experiment. The reactor is comprised of a conventional two-dimensional electrode filled with high carbon-bearing metallized pellets which is also called the third electrode. The results show that there is a dramatic decrease in the content of COD, phenol and cyanide by this treatment. Also the color of coking wastewater after being treated is compared with original sample.


1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.


2021 ◽  
Vol 13 (1) ◽  
pp. 39-48
Author(s):  
Chao Luo ◽  
Ailin Jia ◽  
Jianlin Guo ◽  
Wei Liu ◽  
Nanxin Yin ◽  
...  

Abstract Although stochastic modeling methods can achieve multiple implementations of sedimentary microfacies model in dense well blocks, it is difficult to realize continuous convergence of well spacing. Taking the small high-sinuosity meandering river sediments of the third member of Quantou Formation in Songliao Basin as an example, a deterministic modeling method based on geological vector information was explored in this article. Quantitative geological characteristics of point bar sediments were analyzed by field outcrops, modern sediments, and dense well block anatomy. The lateral extension distance, length, and spacing parameters of the point bar were used to quantitatively characterize the thickness, dip angle, and frequency of the lateral layer. In addition, the three-dimensional architecture modeling of the point bar was carried out in the study. The established three-dimensional architecture model of well X24-1 had continuous convergence near all wells, which conformed to the geological knowledge of small high-sinuosity meandering river, and verified the reliability of this method in the process of geological modeling in dense well blocks.


2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Joseph M. Eisaguirre ◽  
Perry J. Williams ◽  
Xinyi Lu ◽  
Michelle L. Kissling ◽  
William S. Beatty ◽  
...  

Abstract Background Reintroducing predators is a promising conservation tool to help remedy human-caused ecosystem changes. However, the growth and spread of a reintroduced population is a spatiotemporal process that is driven by a suite of factors, such as habitat change, human activity, and prey availability. Sea otters (Enhydra lutris) are apex predators of nearshore marine ecosystems that had declined nearly to extinction across much of their range by the early 20th century. In Southeast Alaska, which is comprised of a diverse matrix of nearshore habitat and managed areas, reintroduction of 413 individuals in the late 1960s initiated the growth and spread of a population that now exceeds 25,000. Methods Periodic aerial surveys in the region provide a time series of spatially-explicit data to investigate factors influencing this successful and ongoing recovery. We integrated an ecological diffusion model that accounted for spatially-variable motility and density-dependent population growth, as well as multiple population epicenters, into a Bayesian hierarchical framework to help understand the factors influencing the success of this recovery. Results Our results indicated that sea otters exhibited higher residence time as well as greater equilibrium abundance in Glacier Bay, a protected area, and in areas where there is limited or no commercial fishing. Asymptotic spread rates suggested sea otters colonized Southeast Alaska at rates of 1–8 km/yr with lower rates occurring in areas correlated with higher residence time, which primarily included areas near shore and closed to commercial fishing. Further, we found that the intrinsic growth rate of sea otters may be higher than previous estimates suggested. Conclusions This study shows how predator recolonization can occur from multiple population epicenters. Additionally, our results suggest spatial heterogeneity in the physical environment as well as human activity and management can influence recolonization processes, both in terms of movement (or motility) and density dependence.


1967 ◽  
Vol 22 (4) ◽  
pp. 422-431 ◽  
Author(s):  
Kyozaburo Kambe

A general theory of electron diffraction by crystals is developed. The crystals are assumed to be infinitely extended in two dimensions and finite in the third dimension. For the scattering problem by this structure two-dimensionally expanded forms of GREEN’S function and integral equation are at first derived, and combined in single three-dimensional forms. EWALD’S method is applied to sum up the series for GREEN’S function.


2011 ◽  
Vol 97 (5) ◽  
pp. 728-733
Author(s):  
Yang Liu ◽  
Xiasheng Guo ◽  
Zhao Da ◽  
Dong Zhang ◽  
Xiufen Gong

This article proposes an acoustic nonlinear approach combined with the time reversal technique to image cracks in long bones. In this method, the scattered ultrasound generated from the crack is recorded, and the third harmonic nonlinear component of the ultrasonic signal is used to reconstruct an image of the crack by the time reversal process. Numerical simulations are performed to examine the validity of this approach. The fatigue long bone is modeled as a hollow cylinder with a crack of 1, 0.1, and 0.225 mm in axial, radial and circumferential directions respectively. A broadband 500 kHz ultrasonic signal is used as the exciting signal, and the extended three-dimensional Preisach-Mayergoyz model is used to describe the nonclassical nonlinear dynamics of the crack. Time reversal is carried out by using the filtered third harmonic component. The localization capability depends on the radial depth of the crack.


2021 ◽  
pp. 31-52
Author(s):  
Marina G. Kurgan ◽  

The House of the Dead was repeatedly compared with the first part of Dante’s The Divine Comedy even in F.M. Dostoevsky’s lifetime. However, his contemporaries usually focused on general analogies, while later scholars paid more attention to the narrative features or individual reminiscences. This research studies the main aspects of the artistic structure of the Dante code, constructing the space of Hell in Dostoevsky’s novel. 1. The organization of space. Alexander Petrovich Goryanchikov, the narrator in The House of the Dead, recreates a three-dimensional image that resembles a gradually narrowing funnel: from a bird’s-eye view, where the prison is seen in its entirety, the focus slowly descends, passing to smaller objects, and finally reaching the “three boards”, which limit Goryanchikov’s personal space. The same principle is employed to construct the space of Hell in Dante’s poem. In The House of the Dead, there is another significant indication of the spatial affinity of Dante’s hell and Dostoevsky’s katorga – active imagery associated with cobwebs and spiders. In the centre of the system of images associated with the designated semantic network is the parade- major, the head of the fortress and the owner of the inmate web. 2. The character system as an element constituting the space of Hell. The character system of The House of the Dead follows the compositional principle of Divine Comedy, where sinners are located in different circles in accordance with their main passion. There are three circles in the prison: the first is formal, according to the court decision; the second is informal, internal, formed by crafts and occupations; the third represents Goryanchikov’s perspective as an exponent of human and humane judgment, which distinguishes another person’s moral state. 3. Torment. The House of the Dead demonstrate a hierarchy in describing the tortures, while freedom becomes a fundamental category to embody the most important motif of physical and moral torment connecting Dostoevsky’s novel with Dante’s experience. The bodily torment ceases to be only the torment of the body to become a pain of the soul, comparable to physical torment, so the soul suffers and burns. Hell as a moral topos was the key for Dostoevsky. In The House of the Dead, he chooses the same way as Dante in The Divine Comedy: vivid corporeality conveys an esoteric metaphor of moral suffering and deep inner movements of the soul.


2016 ◽  
Vol 106 (11-12) ◽  
pp. 847-850
Author(s):  
Q. Spiller ◽  
M. Baumeister ◽  
J. Prof. Fleischer

Im Bereich der Pulvertechnologie stellt das Streckziehen keramischer Grünfolien eine wirtschaftliche Möglichkeit dar, dreidimensionale Halbzeuge herzustellen. Im Rahmen des AiF-Projekts „Inka“ werden die Einflüsse der Prozess- und Geometrieparameter auf die Streckziehfähigkeit von keramischen Grünfolien aus dem Werkstoff ZrO2 experimentell untersucht. Dabei kommen statistische Methoden zur Ermittlung der Haupt- und Wechselwirkungseffekte zum Einsatz.   In the field of powder technology stretch drawing is an economic way to produce three-dimensional semi-finished products. In the context of the AIF Project “Inka“ the influences of process and geometry parameters are experimental examined on stretch drawing capacity of ceramic green tapes of material ZrO2. Statistical methods are used to find out main effects and interaction effects.


2011 ◽  
Vol 142 ◽  
pp. 107-110
Author(s):  
Ming Jun Han ◽  
You Tang Li ◽  
Ping Qiu ◽  
Xin Zhi Wang

The nonlinear dynamical equations are established by using the method of quasi-shells for three-dimensional shallow spherical shells with circular bottom. Displacement mode that meets the boundary conditions of fixed edges is given by using the method of the separate variable, A nonlinear forced vibration equation containing the second and the third order is derived by using the method of Galerkin. The stability of the equilibrium point is studied by using the Floquet exponent.


2013 ◽  
Vol 268 ◽  
pp. 93-102 ◽  
Author(s):  
Yongshan Wan ◽  
Chelsea Qiu ◽  
Peter Doering ◽  
Mayra Ashton ◽  
Detong Sun ◽  
...  

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