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The main causes of the abnormal foetal heart beats: tachycardia (mother's temperature, medicines, premature foetus, foetal anaemia and hypovolemia, imminent hypoxia and chronic acidosis, birth in pelvic presentation); bradycardia (excessive uterus activity, the rapid labour progressing, advanced pregnancy age, congenital heart block); prolonged decelerations (excessive uterus activity, maternal low blood pressure, maternal origin placenta affecting, the compression and prolapse of the umbilical cord, abruptio placentae regional anaesthesia).
Six factors which influence the thermal comfort and belong to the personal ones, as well as to the environment ones, were identified.
Environment factors: air temperature; radiant temperature; air speed; humidity.
Personal factors: clothing insulation, heat produced by the metabolism.
As a strategy of accomplishing the equipment for identifying and monitoring the personalized information, the following textile structure variants were chosen: - structures which are woven and/or knitted from yarns properties specific for ensuring the physiologic comfort, used as a flexible support for the sensor attaching; - structures which are woven and/or knitted from HiTech fibres with conductive properties.

The key factors to reach 4000A output As one of the important components of the shunt excitation system, the thyristor rectifier device its single cabinet output current capacity determines the overall performance and configuration.
How to realize 4000A output needs an overall consideration of the following three factors: (1) Radiator thermal resistance.
It is well known that the air pressure is the main factor affecting the air speed.
The 3240 epoxy board has good mechanical properties in the medium temperature, good electrical performance and stability under high humidity and F class insulation temperature (155 °C), so we choose epoxy board as the isolation for the radiator.
PC board has a high light transmittance, high impact toughness and high mechanical strength, good electrical insulating properties, very good dimensional stability and heat deformation capacity, which is commonly used as shield or mask in the electrical switchgear.

Different layers of welds were structurally heterogeneous and exhibited changing mechanical properties from one layer to other [15].
Heat treatments alters microstructures and so can improve mechanical properties of friction stir welds [16].
Base metal temper states was found to affect microstructure and mechanical properties of friction stir welds.
Kumar, Effect of welding parameters on microstructure and mechanical properties of FSWed joints of AA7039 aluminium alloy.
Kumar, Heterogeneity of microstructure and mechanical properties of friction stir welded joints of Al-Zn-Mg alloy AA7039, Proc.

The optical properties calculations show that, compared with the single-crystal Si layers, the absorption band of the layer of Si/Ge get narrower, and the absorption band-edge obviously get red-shift. 1.
The norm-conserving pseudopotential of reciprocal space is used in the calculation of optical properties.
Fig. 5 The optical absorption spectrum of Si/Ge layer 3.2 Optical Properties Optical properties of semiconductor materials primarily are characterize by semiconductor optical constants (refractive index, light absorption, reflection coefficient and the refractive index, etc.), and these optical constants are decided by energy band structure, carrier concentration and mobility near the Fermi.
But it has been difficult that calculation of optical properties, one of whose reasons is too much factors affecting calculation of optical properties.
Conclusions Energy band structure and optical properties of Si/Ge layer were discussed by using first principle density functional theory.

Factors affecting coal seam water effects are follows: wetting properties of liquids, coal gas pressure and internal gas pressure on coal, cracks and pores of the degree of development and injection parameters.
Electrostatic precipitator dust removal efficiency is high, but the installation requirements are strict, need to consider the dust properties, installation conditions and economic cost.
The main factors of affecting the efficiency of ventilation dusting are the properties of wind speed, mineral dust density, particle size and so on.
Conclusion In view of the relationship between numerous dust control technology and the physicochemical properties of dust, the paper does testing and analysis of dust around the working face before making dustproof job.
It is necessary to test and analyze the nature of true density, specific surface area, dispersion, surface tension, contact Angle, the optical properties, wettability and charged, etc.

The material properties of recycled concrete were analyzed and some advices about development of recycled concrete in China were presented.
Meanwhile, in the process of civil engineering construction and production of ready-mixed concrete, because of product quality and human factors, also produced a certain amount of waste concrete.
The Material Properties of Recycled Concrete The Water Absorption and Moisture Content of Recycled Concrete.
The Structure Properties of Recycled Concrete.
The Problems in the Using Process of Recycled Concrete Before the recycled aggregate was prepared into recycled concrete, the recycled aggregate would undergo two stages, including the use stage of original building and the crushing stage of waste concrete, these processes would directly lead to a lot of interior microcracks and damage in the recycled aggregate, and affected the mechanical properties of recycled aggregate.

In each of these cases, the material may heat up unevenly, which leads to changes in the properties of the body during its production.
Introduction Polymer materials have a number of characteristic properties: a significant functional dependence of the physical and mechanical parameters of the polymer on temperature, significant creep deformations, etc.
Experimental Details A clear distinction between polymeric materials and other structural materials is the dependence of its physical and mechanical parameters on many factors, for example, on temperature.
Thus, this circumstance directly affects the rate of development of highly elastic deformations.
Consideration of the listed factors is considered in an elastic setting, for example, in papers [1-2].

The composite properties differ depending on the combinations of the two components, the matrix type, type and shape of the reinforcement, the processing method applied, among others.
The injection pressure and temperature gradient are the main factors [2], so their optimizations are desirable for a correct filling of the mold and increase productivity.
The main advantages of RTM include non-expensive process equipment, excellent control on mechanical properties, closed mold process, the possibility of producing large and complex parts with low labor costs, use of different weave and mat fabrics architectures, as well as not requiring the use of prepregs [3], high fiber volume content, use of various types of resins, low injection pressure, good dimensional tolerances, relatively low equipment cost, short production cycle times, process automation and low solvent emission.
In many cases, the resin is injected together with solid particles, such as calcium carbonate, in an attempt to improve the mechanical properties of the composite and optimize the process [5].Therefore, the objective of this study is to verify the effect of calcium carbonate mixed in resin in the RTM process.
It can be noted that with 10% CaCO3 content in the resin, it flows more easily than 40% CaCO3, thus affecting the filling time.

There are two vital factors contributed to this phenomenon.
This phenomenon does not derive from discharge energy, but due to the thermal and mechanical properties of specimens.
The alteration of thermal and mechanical properties in deposition will deteriorate their plasticity and tenacity as the prolonging of deposition time.
And when protecting gas flow is too small to form good protection, it may cause oxidation, thereby affecting the deposition thickness and quality.
Eng., Univ. of Tokyo, 25/1: 12-16 [4] Lesnjak, A., Tusek, J., 2002, Processes and Properties of Deposits in Electrospark Deposition, Science and Technology of Welding and Joining, 7/6: 391-396 [5] Li, Y.

The properties of the materials used are shown in Table 1.
Properties of the powders used.
Processing and mechanical properties of PM processed Fe– Cu–Co alloys.
Antisari, Structural and Thermodynamic Factors of Suppressed Interdiffusion Kinetics in Multicomponent High-entropy Materials, Phys.
Angel, Effect of copper on the mechanical properties of alloys formed by powder metallurgy, Materials and Design, 58 (2014) 12-18