Comparative study on the hydrodynamics and mixing characteristics of a new-type particle mixer

2018 ◽  
Vol 332 ◽  
pp. 90-105 ◽  
Author(s):  
Zhenliang Meng ◽  
Mengxi Liu ◽  
Junming Xie ◽  
Wei Wang ◽  
Chunxi Lu
2015 ◽  
Vol 48 (7) ◽  
pp. 564-574 ◽  
Author(s):  
Mengxi Liu ◽  
Junming Xie ◽  
Zhenliang Meng ◽  
Chunxi Lu

Author(s):  
Jianchun Fan ◽  
Qiang Chen ◽  
Laibin Zhang ◽  
Dong Wen

In this paper, a new kind of instrument used specially for testing the worn surface of casing was introduced, its structure and testing principle was further elaborated. Meanwhile, the testing data were also used for the 3D surface reconstruction of the worn area of casing. The comparative study with SEM pictures could tell that the instrument performed very well and is quite helpful in the observation of worn rejoin of casing; the conclusions drawn from the study could be applied in the research of wear mechanism.


2012 ◽  
Vol 627 ◽  
pp. 33-36
Author(s):  
Li Na Chen ◽  
Fan Rong Kong ◽  
Rui Chao Xu

In order to have a better understanding and using of the new type of regenerated flax fiber –Jutecell, Mechanical properties of three kinds of fabrics which knitted by Jutecell, cotton and bamboo fiber were tested, focusing on the stretching, bursting, abrasion-resistant and anti-pilling properties, through the comparison and analysis of the three kinds of fabrics, the results shown that: The strength of Jutecell fabric is the best, followed by regenerated bamboo fiber, natural cotton fibre is the worst. The stretching, bursting and abrasion-resistant of the fabrics knitted by Jutecell yarn are all better than that of the cotton and bamboo fiber knitted fabrics; but its anti-pilling performance is poor, a appropriate measure must be taken in the production process to reduce the pilling phenomenon of clothes made by Jutecell yarns.


Author(s):  
G. Tita ◽  
G. Desrosiers ◽  
M. Vincx

A new hand-held corer for meiofaunal sampling and vertical profile investigation was developed. Its design and use prevents problems connected with core compression caused by the use of a plunger for core extrusion as generally applied in common coring techniques. This represents an advantage when meiofauna vertical profiles are investigated. A comparison between vertical profiles obtained from the newly developed corer and from commonly used corers shows that non-extrusive techniques significantly reduce sediment core compression.


1997 ◽  
Vol 37 (3) ◽  
pp. 615-622 ◽  
Author(s):  
W. G. Yao ◽  
K. Takahashi ◽  
K. Koyama ◽  
G. C. Dai

Author(s):  
Yanmei Zhao ◽  
Qianying Lu ◽  
Xiangyan Meng ◽  
Siyu Huang ◽  
Jianfeng Zhang ◽  
...  

Abstract In December 2019, an outbreak of an unknown cause of pneumonia [later named coronavirus disease 2019 (COVID-19)] occurred in Wuhan, China. This was found to be attributed to a novel coronavirus of zoonotic origin, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2; previously named 2019 novel coronavirus or 2019-nCoV). The SARS-CoV-2, a new type of highly pathogenic human coronavirus related to severe acute respiratory syndrome coronavirus (SARS-CoV), spread rapidly worldwide and caused 53,164,803 confirmed infections, including 1,300,576 deaths, by November 13, 2020 (globally, 206,196,367 cases and 4,345,424 deaths as of August 13, 2021). SARS-CoV-2 and SARS-CoV vary in their specific characteristics, regarding epidemics and pathogenesis. This article focuses on the comparison of the virology, epidemiology, and clinical features of SARS-CoV and SARS-CoV-2 to reveal their common and distinct properties, to provide an up-to-date resource for the development of advanced systems and strategies to monitor and control future epidemics of highly pathogenic human coronaviruses.


Author(s):  
Prabhu Shankar ◽  
Mohammad Fazelpour ◽  
Joshua D. Summers

This paper presents a comparative study on the size optimization of four mesostructures to meet the design requirements for a nonpneumatic tire's (NPT) shear beam with 10% shear flexure (SF) at 10 MPa effective shear modulus. The need for such comparison is motivated from the previous research wherein a systematic design method is proposed to design a mesostructure with high SF by studying the strain energy distribution pattern in honeycomb, auxetic, and sinusoidal auxetic mesostructure. Based upon the distribution pattern, a new type of mesostructure termed S-type is invented. Although it exhibited higher SF than the other mesostructures for a comparable set of geometry, it is not possible to validate the design method without exploring the complete design space of both existing and newly invented mesostructures. In order to address this limitation, these four mesostructures are optimized using the following optimization algorithms: (i) particle swarm; (ii) genetic algorithm (GA); and (iii) FAST–SIMPLEX (using response surface method). The results show the S-type mesostructure can be configured to meet the design requirements, thereby validating the design method presented in previous research. Additionally, it is also observed that auxetic mesostructure is only 5% less than the required design target, which presents an opportunity in future, to develop an alternate design method to maximize SF other than the one that is being validated in this paper.


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