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Pores can be classified into three types, according to their size and their influence on the moisture transport properties of materials: · Micropores: are the smallest pores.
It is generally accepted that the drying rate at this stage depends only on external factors such as the RH of the air, the temperature and the air velocity.
Degradation processes by the action of salts are conditioned by very complex and varied factors.
However, the three main factors can be highlighted, together with environmental factors (temperature, air RH, radiation, and wind speed and direction): · Physical environment where processes take place (construction material); · Hygric characteristics (permeability to water vapor and absorption capillary), which influence the migration of solutions; · Mechanical resistance, which affects the way the material resists the internal stresses that are created in the pores.
The role of saline solution properties on porous limestone salt weathering by magnesium and sodium sulfates.

Membrane is basically a thin layer between two fluid phases, its feed phase and the permeate phase which is a barrier to a particular species, which can separate substances of different sizes and limit the transport of various species based on physical and chemical properties.
The stability of membrane strength depends on the chemical, mechanical and thermal conditions of the membrane[3].
Inorganic membranes have recently caught the attention of the research and industry communities because of their long life span and better resistance to environmental factors and extrinsic industries.
Silica membranes have excellent molecular filtration properties and simple fabrication processes through sol-gel processing, although they need functionalization to overcome hydro-instability.
In addition to providing strength to the membrane pores, the addition of cobalt in silica sol will affect silanol and siloxane groups.

As mentioned before, pH of solution affected the temporary surface charge of the adsorbent.
Sounboon, Risk factors related to the consumption of arsenic from contaminated soil without the intent of the people in Dan Chang District Suphanburi Province, BU Academic Review, 10(2)(2011)81-95
Han, Chemical-mechanical characteristics of crushed oyster-shell, Waste Manage. 23 (2003) 825-834
Hameed, Textural porosity, surface chemistry and adsorptive properties of durian shell derived activated carbon prepared by microwave assisted NaOH activation, Chem.
Morgan, Adsorption properties of Ca2+ on Na-kaolinite and its effect on flocculation using polyacrylamides, Colloids and Surfaces. 32 (1988) 127-138

Supplementary cementing materials are known to contribute to properties of strength and durability.
Silica Fume and Physical Properties.
Preliminary Research On The Properties of Lightweight Expanded Clay Aggregate, J.
Tanyildizi , “Statistical analysis for mechanical properties of polypropylene fiber reinforced lightweight concrete containing silica fume exposed to high temperature”, Materials & Design, Volume 30, Issue 8, September 2009, Pages 3252-3258
Martínez-Abella ,”Concretes with aggregates from demolition waste and silica fume, Materials and mechanical properties”, Building and Environment, Volume 43, Issue 4, April 2008, Pages429-437

Table 1 Comparative presentation of the characteristics of energy sources for melting the contribution material [5] The used source of energy Specific power density [W/cm2] Maximum operational power [kW] Energy zone - heating source diameter [mm] Oxy-acetylene flame 102–103 4–5 1–5 Electric arc 5·102–104 30 2–20 In the case of welding-soldering galvanized steel structural components that have a greater thickness than 2 mm, there is a whole range of conditioning factors for the welding-soldering operations success [6-8]: • at the execution of the joint between the two components, there are difficulties in preparing the exact joint geometry and storage area of the zinc layer; • with increasing the steel material thickness, increases the danger that during the brazing operation, the zinc layer may not be uniformly distributed in the joint; • difficulty in achieving a uniform temperature field during welding-brazing operation and obtaining a homogeneous and compact cord; • at the welding-brazing
Experimental results on macroscopic technological defects appeared at welding-brazing the profiles and galvanized Although, in case of welding-brazing, the appearance of the errors is much more reduced comparing with welding the galvanized steel, it can be also mentioned the appearance of typical defects, caused by various technological factors [9, 11].
Correct preparation of galvanized profiles surfaces for welding-soldering, consists mainly of: • Mechanical surface preparation by grinding, trimming, brushing, pickling and degreasing organic solvents [12-15]; • Preparation of the surface by applying the flow layer specific to the type of electrode used [16].
CONCLUSIONS In the paper it is concluded that use of technological method has many advantages compared to traditional solutions (electric welding or screw connections): removing portions of assembled components using flame without being affected the zinc protection, corrosion resistance identical to the assembly basic material, reducing the galvanized assemblies execution time, simplifying the repairing and maintenance technology of structural elements made of galvanized components, while obtaining mechanical and corrosion resistant joints.
Lippold, Dissimilar friction welding of 6061-T6 aluminum and AISI 1018 steel: Properties and microstructural characterization, Mater. and Design, 31 (2010) 2305–2311

In order to protect the lives and property of mine workers, the influence of rocks materials slope induced by coal mining was presented.
Combined with the geological environment conditions of slope, rock structure and human engineering activities, the evolution of the slope can be divided into the following phases: The initial deformation stage.Affected by the fault, the hanging rock on the rock exists under the disk compression, and the foot of a stress concentration, slopes broke in the weak layer (mudstone, the contact zone between layers, etc.) and near the foot of rock, then cracks were formed, and to extended at both ends of each link.
The selected rock (soil) parameters such as physical and mechanical properties are shown in Table 1.
rock（（（（soil）））） Type of rock (soil) E / MPa c / MPa υ γ / Nmm -3 φ / ° Loess Homogeneous degree 1 1 100 100 24 Average 80 33 0.40 2.7×10 -5 Sandstone and mudstone layer Homogeneous degree 3 3 100 100 35 Average 2000 1 0.30 2.5×10 -5 Mudstone Homogeneous degree 2 2 100 100 25 Average 1000 1 0.35 2.3×10 -5 Sandstone Homogeneous degree 3 3 100 100 45 Average 3000 3 0.25 2.5×10 -5 Coal Homogeneous degree 1 1 100 100 28 Average 1000 2 0.27 1.5×10 -5 Limestone Homogeneous degree 4 4 100 100 40 Average 4000 11 0.35 2.6×10 -5 Fault belt Homogeneous degree 1 1 100 100 25 Average 10 1 0.40 1.8×10 -6 Note: ratio of compressive and tension is 1/10; Residual threshold coefficient 0.1; Maximum strain coefficient is 1.5; The maximum compressive strain coefficient is 200; poisson ratio coefficient after the destruction of loess is 1.0; rock destruction poisson ratio coefficient is 1.2; and reduction factor
References [1] Reng Guangming, Nie Dexin, Liu Gao, Studies on Deformation and Failure Properties of Anti-Dip Rockmass Slope , Chinese Journal of Rock Mechanics and Engineering, 2003 22(suppl 2):2707-2710

Mechanical properties of 34CrMo steel obtained during testing with different deformation rates in solution Nace NACE TM 0177 (A).
A Air Sol.A/ Air Air 0.0013 1037 1037 1 20.5 20.5 1 Solution А 0.13 1012 1037 0.98 14.7 20.5 0.72 Solution А 0.013 993 1037 0.96 6.3 20.5 0.31 Solution А 0.0013 556 1037 0.54 3.7 20.5 0.18 Solution А 0.00013 552 1037 0.53 3.5 20.5 0.17 Tests in solution A with gas saturation with hydrogen sulfide showed a significant effect of the deformation rate on the mechanical properties of 34CrMo steel.
A further decrease in the deformation rate to ⁓ 10-7 s-1 practically does not affect the values of the obtained fracture characteristics.
When the temperature rises to 80 °C, the stress ratio increases almost twice, which indicates a significant decrease in the negative factor of hydrogen sulfide.
Steel 09Mn2Si is the least affected by temperature on destruction in the hydrogen sulfide environment compared to steels 34CrMo and X70, which is confirmed by the stability of the criterion with a deformation ratio of 0.17 despite temperature changes.

The diversified market demand and shorter production cycle, as well as other factors, have increasingly complicate the problems of mold during design and manufacturing.
Considering both design and manufacturing to facilitate the production progress, the effective collaborative development becomes an important issue for mold factor.
In case of selection of mechanical processing machines, cutting tools and different processes in the planned template, the special type mold components and its executive program were optimized via genetic algorithm.
The comparison of optimized properties was based on annealing simulation algorithm and genetic algorithm.
The report can affect the cost of manufacturing the mold, and also provide a reference to the follow-up mold design stage.

Among several possible smart nanoscale materials, Carbon Nanotubes (CNTs) have aroused great interest in the research community because of their remarkable mechanical properties [5], electrical conductivity [6], electrochemical properties [7], piezoresistance [8], and other physical properties [9-11].
The CNT sensor is versatile and can measure multiple physical properties of a structure as illustrated in Figure 1.
As shown in the above experiments, the CNT sensor is versatile and can measure multiple physical properties of a structure.
The capacitance is not affected by strain.
The neuron measures multiple physical properties, including cracking, corrosion, strains, and the number of stress cycles simultaneously.

Among them, polymer materials, with their unique properties and advantages, occupy a large proportion in biological materials and are widely used in cardiovascular, bone repair, nerve transmission, skin, organs, controlled release of drugs and other fields As for the polymer biomaterials implanted into human body, the complex and strict requirements must be met in the foot, which requires the polymer materials to meet the following requirements: no toxicity, no teratogenic; Excellent biocompatibility: high chemical stability: suitable physical and mechanical properties; Easy to process and shape; Better yield/price ratio[7-8].
Femtosecond Laser Processing of Polymer Materials The advantages of macromolecular materials in cost, mechanical properties, functional pertinence and technological complexity make it gradually replace some inorganic materials or metals, thus a variety of macromolecular materials based devices have appeared.
Biocompatibility can be simply summarized as material accepted by the body, which is the synthesis of physical, chemical and biological properties of the material itself.
Including material and tissue or blood produced by the long-term exposure to biological reactivity, also including the foreign substances in the body under the influence of the factors of its function, physical and chemical changes.
The surface morphology, surface properties, and electrical properties of the polymer materials are also highly compatible.