Selection of worm species and packing in a new type of biologic reactor for sludge reduction

2014 ◽  
Author(s):  
S.X. Li ◽  
Z.H. Wang ◽  
D.M. Li ◽  
W.W. Duan ◽  
S. Mei ◽  
...  
Keyword(s):  
Sludge Reduction ◽  
New Type ◽  
Selection Of

scholarly journals Development of KASP Markers for Germplasm Characterization and Fingerprinting Identification of Broccoli in China

2020 ◽  
Author(s):  
Yusen Shen ◽  
Jiansheng Wang ◽  
Huifang Yu ◽  
Xiaoguang Sheng ◽  
Zhenqing Zhao ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Marker Assisted Selection ◽  
Genetic Relationships ◽  
Cost Effective ◽  
Germplasm Characterization ◽  
2D Barcode ◽  
New Type ◽  
Generation Sequencing ◽  
Kasp Markers ◽  
Selection Of

Abstract Background: Broccoli (Brassica oleracea var. italica) is a vegetable widely cultivated in China. Many new-type broccoli cultivars were bred and developed by Chinese breeders during the recent three decades. However, the broccoli cultivar nomenclature and detailed information of genetic relationships among broccoli germplasms are unclear. Results: The present study identified millions of SNPs by next-generation sequencing of 23 representative broccoli lines. Through several steps of selection, 100 SNPs were successfully converted into KASP markers, and used to evaluate the genetic diversity, genetic relationship, and population structure of 392 broccoli accessions, which represent the mainly broccoli breeding materials in China. The initial, introduced and improved accessions were well clustered, though some accessions were overlapped between groups, probably reflecting the fact that breeding activities led to genetic similarities. To make the KASP genotyping more efficient and cost-effective, 25 of the 100 KASPs were selected for fingerprinting of all accessions, and the 2D barcode contained fingerprinting information were generated for elite varieties. Conclusion: The KASP markers developed in this study provided an efficient way for germplasm characterization, DNA fingerprinting, seed purity identification, and marker-assisted selection of broccoli in China.

scholarly journals FEATURES OF MODELING THE DRIVE UNIT OF THE MIXER WITH BIDIRECTIONAL ROTATIONAL IMPACT ON THE MATERIAL

2020 ◽  
pp. 101-107
Author(s):  
K. Yudin ◽  
A. Pogosbekov
Keyword(s):  
Static Analysis ◽  
Frequency Converter ◽  
Practical Implementation ◽  
Belt Drive ◽  
Unit Operation ◽  
The Finite Element Method ◽  
Drive Unit ◽  
Mixing Chamber ◽  
New Type ◽  
Selection Of

Periodical mixers are considered. The expediency of developing a new type of mixer is presented. Features of the material movement in the mixer allow to speak about the presence of elements of a gyroscopic effect. The mixing chamber is rotated by means of belt, chain and conical transmission. The resulting complex spatial movement of material particles can be controlled by a frequency Converter and the selection of appropriate gears or using a belt drive. An algorithm for modeling the drive unit of a mixer with a bidirectional rotational effect on the material is presented. The features of the drive unit and its components are considered. The task is to build a model of deformation of the drive unit of the mixer. The finite element method (FEM) for the drive unit of the mixer is used. Machine experiments are performed that implement fatigue calculations of the drive unit with a study in the SolidWorks Simulation environment. The results of static analysis of the drive unit operation in determining the deformation, static analysis of the drive unit operation in determining the voltage with varying torque are obtained. A variant of static analysis is presented when using a belt drive instead of a gear drive. The practical implementation of the mixer drive unit in metal is shown. Conclusions on modeling are made.

Non-Darcy effects in fracture flows of a yield stress fluid

2016 ◽  
Vol 805 ◽  
pp. 222-261 ◽  
Author(s):  
A. Roustaei ◽  
T. Chevalier ◽  
L. Talon ◽  
I. A. Frigaard
Keyword(s):  
Pressure Gradient ◽  
Yield Stress ◽  
Single Phase ◽  
Stokes Problem ◽  
Type Flow ◽  
New Type ◽  
Approximate Expressions ◽  
Limiting Pressure Gradient ◽  
Selection Of ◽  
Limiting Pressure

We study non-inertial flows of single-phase yield stress fluids along uneven/rough-walled channels, e.g. approximating a fracture, with two main objectives. First, we re-examine the usual approaches to providing a (nonlinear) Darcy-type flow law and show that significant errors arise due to self-selection of the flowing region/fouling of the walls. This is a new type of non-Darcy effect not previously explored in depth. Second, we study the details of flow as the limiting pressure gradient is approached, deriving approximate expressions for the limiting pressure gradient valid over a range of different geometries. Our approach is computational, solving the two-dimensional Stokes problem along the fracture, then upscaling. The computations also reveal interesting features of the flow for more complex fracture geometries, providing hints about how to extend Darcy-type approaches effectively.

scholarly journals Suburbanization Effect of Urban outward Expansion in the New-type Urbanization and the Competitive Strategy of Assembled Building Developers

2019 ◽  
Vol 136 ◽  
pp. 04046
Author(s):  
Gangqiang Luo ◽  
Qin Wang
Keyword(s):  
Large Population ◽  
Target Market ◽  
Game Analysis ◽  
New Type ◽  
City Model ◽  
Industry And Commerce ◽  
Two Stages ◽  
Development Structure ◽  
Competition Pattern ◽  
Selection Of

This paper expounds the meaning of urban suburbanization in a narrow sense and broad sense, and probes into the dynamic mechanism of suburbanization. The influence of the suburbanization effect of the urban outward expansion on the assembled building developers is analysed from three aspects: the selection of the target market, the positioning of the market and the assembled building development structure. Based on the Salop Circumferential City Model, two stages of game analysis are carried out for the competition of assembled building developers. The research results show that in the process of suburbanization of most cities in China at present, it still stays at the stage of circular competition. With the continuous agglomeration of large population, industry and commerce in the suburbs of cities, the circular competition pattern of developers will be transformed into plate competition pattern.

Optimize the Dielectric Slab of the Tunable Active Frequency Selective Surface Absorbing Material

2012 ◽  
Vol 534 ◽  
pp. 209-214 ◽  
Author(s):  
Qian Chen ◽  
Jian Jun Jiang ◽  
Xin Xin Xu ◽  
Biao Sun ◽  
Li Zhang ◽  
...  
Keyword(s):  
Frequency Selective Surface ◽  
Dielectric Slab ◽  
Optimum Thickness ◽  
Absorption Properties ◽  
Absorbing Material ◽  
New Type ◽  
Frequency Selective ◽  
Experimental Equation ◽  
Tunable Absorption ◽  
Selection Of

Active frequency selective surface (AFSS) absorber loaded with PIN diodes is a new type of structural absorber with tunable absorption properties. This absorber is similar to a sandwich, the surface is an AFSS, the middle is a dielectric slab, and the bottom is a metallic ground. In order to design and fabricate a thin and good performance absorber, the selection of dielectric slab is very important. In this paper, we detailed investigated the effects of the dielectric slab parameters (permittivity and thickness) to the absorption properties by experiments, and an experimental equation was proposed to provide a better description about their relationship. The measured results indicated there was an optimum thickness for the dielectric slab to produce the broadest bandwidth. The experimental equation was useful to optimize the design of the absorber.

Research on Construction Technology of Inclined Pylon of Single Pylon Cable-Stayed Bridge without Backstays

2011 ◽  
Vol 90-93 ◽  
pp. 1168-1172
Author(s):  
Ying Lei Zhu
Keyword(s):  
Computational Model ◽  
Henan Province ◽  
Construction Technology ◽  
Box Girder ◽  
Construction Period ◽  
Cable Stayed Bridge ◽  
New Type ◽  
Complex Construction ◽  
Longitudinal Cracks ◽  
Selection Of

A new type of cable-stayed bridge, single pylon cable-stayed bridge without backstays is used in the Zhenshui Road Bridge in Xinmi City, China’s Henan Province, which adopts PC box girder with corrugated steel webs. It has many advantages such as light girder deadweight, low pylon height and avoiding webs longitudinal cracks. This novel bridge is adopted firstly in China. Cast-in-place method with bracket is used in the construction of the bridge’s inclined pylon because of its complex construction technology and tight construction period. In this paper, interests are focus on the scheme comparison and selection of bracket construction, the establishment of bracket’s computational model and the result of numeric analysis etc. The chief aim of this investigation was provides useful reference and enlightenment to similar bridge types.

scholarly journals Damage Detection of the Rod in the Crossflow Using Surrogate-Based Modelling

2021 ◽  
Vol 58 (5) ◽  
pp. 50-62
Author(s):  
S. Upnere ◽  
J. Auzins
Keyword(s):  
Orthogonal Design ◽  
Computational Time ◽  
Rod Bundle ◽  
Surface Method ◽  
New Type ◽  
Computational Fluid Dynamics Simulations ◽  
Dynamics Simulations ◽  
The Relationship ◽  
Selection Of ◽  
Dominant Frequencies

Abstract An effective and accurate methodology is developed to create an inverse surrogate model for the mass reduction analysis of the rod in the rod bundle inserted in the crossflow. The performance of two surrogate modelling approaches has been evaluated. These models are the Response Surface Method and Legendre polynomial approximations. The relationship between dominant frequencies, support stiffness and rod mass derived from Computational Fluid Dynamics simulations is used as input data for approximations. The selection of sample points is implemented with a new type of orthogonal design. The results have shown that the proposed methodology can reliably replace the finite volume model and drastically reduce computational time.

scholarly journals Обучение чтению как культурному событию в смешанной аудитории при изучении русского как второго иностранного в школах Чехии

2020 ◽  
Author(s):  
N.I. Getmanenko ◽  
L. Rozbuodova ◽  
L. Shafrankova
Keyword(s):  
Bilingual Students ◽  
School Students ◽  
The Czech Republic ◽  
Cultural Event ◽  
Bilingual Student ◽  
The Family ◽  
New Type ◽  
Principal Points ◽  
Selection Of

В учебных учреждениях появился новый тип обучаемого ученик-билингв. В связи с этим необходимо менять современную образовательную модель, особо обращая внимание на чтение как вид речевой деятельности и принципы отбора дидактического материала при обучении чтению в смешанной аудитории на уроках РКИ в школах Чехии. В качестве примера приводится один из авторских текстов, которому отводится ролькультурного событияпри чтении в семейном кругу, в классе или во внеурочное время. Авторы обосновывают необходимость и особенность целенаправленной и систематической методической работы с текстами, чтение которых может стать культурным событием. Предложена авторская методика работы с подобными текстами.The concept of this article is based on the following three principal points. The first one is connected with the advent of a new type of student in schools, a bilingual student, and, due to this, the necessity to introduce changes to the modern educational model. The second one is related to the role of reading as a species of speech activity and is concerning the principles of selection of didactic materials when teaching reading to a diverse audience (including bilingual students) in classes of Russian as a Foreign Language in schools of the Czech Republic. As an example, there is provided one of the authors texts which plays the role of a cultural event for school students and primary school students who are mono- and bilinguals, when reading in the family circle, in class or out-of-class. The third one substantiates the necessity and specialty of a purposeful and systematic methodological work with texts, the reading of which could become a cultural event. The authors methodology of work with such texts is proposed.

The Structure Selection Analysis on the Support Tower of H-Type Vertical Axis Wind Turbine

2011 ◽  
Vol 250-253 ◽  
pp. 1622-1627
Author(s):  
Chong Shan Bao ◽  
Yong Zhang
Keyword(s):  
Wind Turbine ◽  
Parametric Analysis ◽  
Vertical Axis ◽  
Pilot Project ◽  
Vertical Axis Wind Turbine ◽  
Structure Selection ◽  
Selection Analysis ◽  
New Type ◽  
Selection Of

H-type vertical axis wind turbine is a new type wind turbine. Currently the research on its support tower is still in the blank stage. Based on the work principle of H-type vertical axis wind turbine, the factors about the structure selection of the support tower were analyzed, and parametric analysis of structure selection was carried out for a pilot project. Finally some useful conclusions were obtained to guide the design.

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