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WITH THE IMPROVEMENT OF THERMAL – TECHNICAL PROPERTIES OF BUILDING STRUCTURES (THERMAL RESISTANCE INCREASE OR HEAT TRANSMISSION COEFFICIENT DECREASE), BUT ALSO WITH THE TECHNICAL LEVEL OF THE HEATING SYSTEM.
For the first orientation assessment of thermal condition of the internal environment the internal air temperature can be used that belongs to significant factors influencing the energy balance of a hall object [5].
By turning on the hot-air heating the humidity conditions in the hall are adversely affected.
For a longer period needed (work shift) the required relative air humidity can be achieved only by mechanical treatment of air.
The desired internal environment conditions of buildings cannot be achieved by thermal-technical properties of envelope constructions only.

Bionics is currently an international research hotspot, and the numerous drag-reducing properties of biological surfaces have inspired numerous human scientific studies.
This error size can be considered that the numerical simulation calculation results are accurate and the structural properties of the vessel obtained with them are basically representative of the actual phenomenon and properties.
Atherosclerosis: process, indicators, risk factors and new hopes.
The effect of stenotic geometry and non-Newtonian property of blood flow through arterial stenosis.
International Journal of Mechanical Sciences, 228, 107490. (2022) [20] Hu, K., Li, Y.

Introduction As one of the key parts in high performance aero-engine, single crystal turbine blades have significantly higher high-temperature mechanical properties than polycrystalline materials.
DD6 is a Chinese second generation single crystal superalloy, which tensile and creep rupture properties are comparable with those of the second generation SX alloys such as Rene N5, CMSX-4 and PWA1484 [1-3].
So if the recrystallization takes place, the recrystallized grain boundaries will become the weakest regions and the mechanical properties will be dramatically reduced.
Consequently, the element diffusion is affected by the retained energy at heat treatment, and the component segregation is obviously presented in the surface region.
In addition, according to Refs [16], for single crystal superalloy, solution ofγ’ phase is a critical factor for the recrystallization.

Introduction Engineering analysis of fatigue crack growth is usually performed by relating da/dN to the stress intensity factor range, DK.
The fatigue threshold is greatly dependent on material properties.
However, this load shedding produces larger plastic strains at the high loads early in the test, which affect the measured values of DKth.
Table 1 summarises the mechanical properties of the illustrative cases of materials used in this study.
Table 1 presents the values predicted here for DKth considering different material properties.

Thickness variations of cold rolled strips are caused by various factors like fluctuation in strength of the material, the eccentricity of the rolls or thickness variation of the incoming strip.
The gauge includes guide rollers to prevent strip vibration, a C-frame to allow an inline calibration and mechanical adjustment of the measuring range so that even flexible strip thicknesses can be measured.
Furthermore a piezoelectric actuator is characterized by excellent dynamic properties in comparison to other actuators [4].
In order to control the described setup, a model-based predictive controller will be designed which is capable to synchronize the two described actuator types in a way that the advantages of the multi actuator concept in regard to the specific properties of the individual actuators can be used for maximum thickness precision over length.
The vibration of the rolling mill can excite strip oscillation and cause a tilted strip which affects the measured thickness.

The chemical inertness of PET, the good barrier properties towards moisture and oxygen, the impact resistance and the very low weight of PET bottles compared to glass ones of the same filling volume are the reason of the rapid growing up of the consumption of PET.
Among the various by-products acetaldehyde is particularly critical because it possesses a distinct odor and taste, which affects the organoleptic properties of non-carbonated mineral waters, being detectable in low concentration in mineral water [3].
Several attempts have been made to investigate the factors influencing the formation of acetaldehyde during PET production and processing as well as the responsible mechanisms [4].
Hydrolytic chain scission seems to represent the fastest and most dangerous process, causing relevant molecular weight loss and mechanical property deterioration [6].

Among their related works, Sukindar et al. [1] believed that the nozzle diameter is one of the most effective factors to printed product’s quality in terms of pressure drop, geometry error as well as extrusion time.
In that study, by considering several factors including pressure drop, geometrical error and printing time, a 0.3 mm nozzle diameter was considered as an appropriate value in the optimum range for extruding PLA material using open-source 3D printing.
Then, the experiments were implemented to examine the properties and optical microstructure of printed parts.
Material and Method Material characteristic PLA and PLA-copper material properties such as density, specific heat, etc. are all used as the initial condition for the software's computation to achieve results.
The material properties parameters are shown in the Table 1 [8, 9].

Gregorio del Amo 8, 28040 Madrid, Spain a delvalle@cenim.csic.es, bruano@cenim.csic.es Keywords: Magnesium alloys; Severe rolling; Texture; Grain refinement, Mechanical properties; Plastic anisotropy; Strain rate sensitivity.
The grain size, d, measured by the mean length intercept method with a correction factor of 1.74, is 3.6 µm.
Clearly, if a fine grain size enhances GBS, a decrease of anisotropy with decreasing grain size is expected since this mechanism is not affected by texture [15] which is contrary to the experimental results.

These variations arise due to factors related to microstructure variation, the manufacturing technique such as tool wear or built up edge [6].
Developed interfacial ratio parameter, Sdr, for instance was particularly affected by the peening process.
The depth of the zone affected in low roughness peened is also greater by around 50 µm.
Dong, et al., Comprehensive study of parameters for characterizing three-dimensional surface topography II: Statistical properties of parameter variation, Wear 167 (1993), 9-21
Mamalis, et al., Surface Treatment of High-Strength Steel Plates Due to Ball-Drop Forming, Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture 205 (1991), 93-103

Introduction The electromotor has a property of constant torque at low speed and invariable power in high speed, so the multi-ratio transmission could be replaced with a fixed ratio retarder in power train of EVS.
Actually, there are many factors affect transmission efficiency, such as the radius of contact surface, the characteristic parameters and temperature of lubricating oil and so on. 4 Conclusions TIVT is a set of mechanical driving device that delivers power by traction force of oil film between transferring force parts.
Mechanical Science and Technology for Aerospace Engineering, 2011, 30(8):1394-1396 [3] S.
China Mechanical Engineering, 2005, 16(6): 490-49