solid body
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2022 ◽  
Vol 20 (6) ◽  
pp. 108-116
Author(s):  
T. A. Chekanova ◽  
I. N. Manzeniuk

Relevance. Tick-borne relapsing fevers caused by Borrelia species pathogenic for humans are not well understood. Aim of this review is to assess the genetic diversity of Borrelia with special attention to the relapsing fever group and phylogenetically related species carried by ticks. The review also provides up-to-date information on the main vectors and their geographic distribution, reservoirs of borrelia – pathogens, and potential pathogens of tick-borne recurrent fevers. Conclusions. New types of Borrelia, including a candidate, of relapsing fever clade and related phylogenetic lines/groups, which are carried not only by argasid, but also by solid-body ixodids ticks, deserve further study. The preservation of the epidemic potential of tick-borne relapsing fever can be facilitated by climatic changes, and poorly studied adaptation mechanisms of Borrelia to the range of vectors.


2021 ◽  
Vol 1 (74) ◽  
pp. 62-64
Author(s):  
B. Zimin ◽  
A. Khitrina

Observations of a solid body with internal stresses have been carried out, this model allows us to describe the energy dissipation during the change of the elastic stage of deformation to the plastic one. The dependence of heat release on the heat physical properties of the contacting structures is noted.


2021 ◽  
Vol 2140 (1) ◽  
pp. 012018
Author(s):  
D Ya Sukhanov ◽  
A E Kuzovova

Abstract A method is proposed for the numerical simulation of acoustic processes in solids based on the particle dynamics approach for describing the anisotropic properties of a solid. It is proposed to consider a solid body in the form of an array of particles located in a cubic body-centered crystal lattice. To set the anisotropic properties of a solid, it is proposed to use its own proportionality force to shift coefficient for each direction. Based on the results of numerical simulation, the dependence of the longitudinal wave velocity on the direction is shown.


2021 ◽  
Vol 60 (6) ◽  
pp. 5655-5673
Author(s):  
T.S. Amer ◽  
H. Elkafly ◽  
A.A. Galal
Keyword(s):  

2021 ◽  
Author(s):  
◽  
Dion Palamountain

<p>Bathing at a fundamental level is desired for two attributes cleansing the body, and cleansing the soul. Historically the act of bathing has been a combination of hot and cold water bathing; this act cleanses both the body and soul, and is seen as an enjoyable pastime for both eastern and western cultures. The priority then is to architecturally express the 'body and soul' through a careful material selection. The choice of materials reflects this, concrete and bamboo, expressing the solid (body) and the light (soul). Design precedents, material comparison, eastern and western beliefs are used to establish a rationale between the material contrast of body and soul. The location for the design reflects the natural connection between 'body and soul' in a location that references the land and water, geothermal and steam, lake and landscape. The final project includes detailing of non-penetrating fixings for the use in bamboo construction, including natural and industrial products into a public bath that compliments the body and the soul.</p>


2021 ◽  
Author(s):  
◽  
Dion Palamountain

<p>Bathing at a fundamental level is desired for two attributes cleansing the body, and cleansing the soul. Historically the act of bathing has been a combination of hot and cold water bathing; this act cleanses both the body and soul, and is seen as an enjoyable pastime for both eastern and western cultures. The priority then is to architecturally express the 'body and soul' through a careful material selection. The choice of materials reflects this, concrete and bamboo, expressing the solid (body) and the light (soul). Design precedents, material comparison, eastern and western beliefs are used to establish a rationale between the material contrast of body and soul. The location for the design reflects the natural connection between 'body and soul' in a location that references the land and water, geothermal and steam, lake and landscape. The final project includes detailing of non-penetrating fixings for the use in bamboo construction, including natural and industrial products into a public bath that compliments the body and the soul.</p>


2021 ◽  
Vol 921 (2) ◽  
pp. 176
Author(s):  
Dana S. Balser ◽  
Trey V. Wenger ◽  
L. D. Anderson ◽  
W. P. Armentrout ◽  
T. M. Bania ◽  
...  

Abstract We investigate the kinematic properties of Galactic H ii regions using radio recombination line (RRL) emission detected by the Australia Telescope Compact Array at 4–10 GHz and the Jansky Very Large Array at 8–10 GHz. Our H ii region sample consists of 425 independent observations of 374 nebulae that are relatively well isolated from other, potentially confusing sources and have a single RRL component with a high signal-to-noise ratio. We perform Gaussian fits to the RRL emission in position-position–velocity data cubes and discover velocity gradients in 178 (42%) of the nebulae with magnitudes between 5 and 200 m s − 1 arcsec − 1 . About 15% of the sources also have an RRL width spatial distribution that peaks toward the center of the nebula. The velocity gradient position angles appear to be random on the sky with no favored orientation with respect to the Galactic plane. We craft H ii region simulations that include bipolar outflows or solid body rotational motions to explain the observed velocity gradients. The simulations favor solid body rotation since, unlike the bipolar outflow kinematic models, they are able to produce both the large, >40 m s − 1 arcsec − 1 , velocity gradients and also the RRL width structure that we observe in some sources. The bipolar outflow model, however, cannot be ruled out as a possible explanation for the observed velocity gradients for many sources in our sample. We nevertheless suggest that most H ii region complexes are rotating and may have inherited angular momentum from their parent molecular clouds.


SIMULATION ◽  
2021 ◽  
pp. 003754972110551
Author(s):  
Laurie A Florio

This work describes a unique technique to simulate continuously and directly coupled fluid flow and moving particles including both mechanical and thermal interactions between the flow, particles, and flow paths. The particles/flow paths are discretized within a computational fluid dynamics flow domain so that the local flow and temperature field conditions surrounding each particle or other solid body are known along with the local temperature distribution within the particle and other solids. Contact conduction between solid bodies including contact resistance, conjugate heat transfer at the fluid–solid interfaces, and even radiation exchanges between solid surfaces and between solid surfaces and the fluid are incorporated in the thermal interactions and a soft collision model simulates the solid body mechanical contact. The ability to capture these local flow and thermal effects removes reliance on correlations for fluid forces and for heat transfer coefficients/exchange and removes restrictions on the flow regime and particle size and volume fraction considered. Larger particle sizes and higher particle concentration conditions can be studied with local effects captured. The method was tested for a range of particle thermal and mechanical properties, driving pressures, and for limited radiation parameters. The results reveal important information about the basic thermal and flow phenomena that cannot be obtained in standard modeling methods and demonstrate the utility of the modeling method. The technique can be applied to examine phenomena dependent on local thermal conditions such as chemical reactions, material property variation, agglomerate formation, and phase change. The methods can also be used as a basis for machine learning algorithm development for flows with large particle counts so that more detailed phenomena can be considered compared to those provided by standard techniques with reduced computational costs compared to those with fully resolved particles in the flow.


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