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Analysis on the Influence of O-MMT in the Properties and Bacterial Count of PVDF Nanocomposite Membrane Acelle Pearl T.
Analysis of the study further showed other factors that needs to be accounted since they were observed to highly affect the structure and properties of the membranes.
Whilst PVDF acts as the matrix of this study, it has been observed that the introduction of fillers to the polymer matrix improves the various properties without affecting their processability[2][9].
Investigating the fundamental properties gives an intuitive comprehension regarding its properties.
The mechanical properties of the synthesized PVDF/O-MMT membranes were analyzed via Universal Testing.

Research Progress for Gypsum Retarder Ren Xiao-qiong1, Wu Ya-nan1,2,Li Ying1,3 ,Lin Mo-han1 ,Zhao Feng-qing1,a 1Hebei University of Science & Technology, Shijiazhuang 050018, PR China 2Hebei Engineering Research Center of Solid Wastes Utilization Shijiazhuang 050018, PR China 3Hebei Engineering Research Center of Pharmaceutical and Chemical Engineering Shijiazhuang 050018, PR China ,aemail:zhaofq3366@126.com(corresponding author) Keywords: Building gypsum; Retarder; Mechanical properties; Waste mycelium Abstract.
Although the effects of organic acids and phosphates have better retarding performances, there is still obvious a shortcoming that the mechanical strength reduces largely with time going by.
In the case of citric acid as a retarder, the suitable dosage should not exceed 0.1%. pH and temperature and other factors have a greater impact on its retarding effect.
Conclusion Gypsum retarder is an important material of building materials, and its performance will directly affect the performance of gypsum products.
Factors affecting citric acid retarding effect on the building plaster [J].

It is not only related to the surface manufacturing accuracy, but also related to the material and its properties.
The 45 steel after quenching and tempering is applied to different structural parts, which can show good comprehensive mechanical properties.
It is mainly used to evaluate the friction and wear properties of lubricants, metals, plastics, coatings, rubber and other materials.
The first experiment: In order to study the friction properties, carrying out the experiment at room temperature and under oil lubrication.
Study on the Tribological Properties of Intermetallic MoSi2/45 Steel under Oil Lubrication[J].

The mechanical properties of the nanocomposite with clay content up to 3.0% were improved.
The mechanical properties were determined using universal testing machine (UTM).
Mechanical Properties.
Another important factor to consider in the mechanical properties of the nanocomposite membrane was the Young’s modulus, which is the ratio of stress and strain.
Aside from the process, the membranes were all attached with the membrane support when DSC was performed, thus, affecting the DSC results for the sample membrane.

During dry-wet spinning, diffusion is very important for the formation and mechanical property of fibers.
Several factors which affect the coagulation process including concentration and temperature of coagulation bath were discussed respectively.
Introduction Cellulose acetate (CA) is a modified natural polymer with awide range of properties [1, 2].
The solubility of CA in various solvents depends on several factors, including the degree of substitution (DS) and the solubility parameter of the solvents.
The coagulation bath concentration is also an important factor that affects the final content of HAc in the filament.The influence of concentration of solvent in the coagulation bath on diffusion of solvent during the coagulation process is very complex.

Ge-chalcogenide glasses – properties and application as optical material Tamara Petkova1a, Vania Ilcheva1, P.Ilchev2аnd P.Petkov3 1Institute of Electrochemistry and Energy Systems, BAS, Sofia 1113, Bulgaria 2SENSATA Electronic group, Boutevgrad, Bulgaria 3University of Chemical Technology and Metallurgy, Sofia 1756, Bulgaria a e-mail: tpetkova@bas.bg Keywords: glasses, chalcogenide, properties, structure Abstract.The great interest toward chalcogenide materials is due to the simple technology of preparation in bulk forms and thin films; good thermal and mechanical properties; transparency and photo-sensibility in the IR spectral range.
They have a large range of transparency and good mechanical properties such as hardness, adhesion, low internal stress and water resistance.
The properties of chalcogenide semiconducting glasses are strongly dependent on their compositions.
Thus, the addition of third element in the binary system GeChal is expected to affect properties.
The glass transition temperature is considered to be proportional to the mean bond energy , which depends on factors like mean coordination number, degree of cross linking, bond energy and the nature of bonds.

Research of Uniformity and Effect on Crankshaft Barrel Finishing Wenhui Lia, Shengqiang Yangb , Shichun Yangc and Hongling Chend College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan Shanxi, China, 030024 a wenhui_li7190@126.com, btutysq@263.net.cn, cyangsc@tyut.edu.cn, dchen-hl@263.net Keywords: Finishing, Barrel finishing, Crankshaft, Uniformity, Effect Abstract.
Based on its finishing mechanism, factors and effect affecting finishing uniformity are analyzed by theory and experiment, finishing effect is defined, which provides basis for parameters selection of crankshafts barrel finishing.
Consequently, it has effects of finishing crankshafts, increasing surface quality and improving the physical-mechanical properties [1-3]. 1-gearing 2-crankshaft 3-machining medium 4-crank and slider mechanism 5-slot barrel Fig.1 Principle diagram of horizontal spindle barrel finishing Based on barrel finishing mechanism, relative motion and force between the particle and crankshaft are main factors affecting finishing efficiency and finishing uniformity.
Wang: China Mechanical Engineering, Vol. 12 (2001) No.1, pp.300-302.

Premature failure of a spot welded joint can be difficult to be predicted but common factors that had been discussed in many research is related with fatigue and residual stress.
Process parameter is recognized as one of critical factors affecting the reliability and quality of a spot welded joint.
In experimental study, low carbon steel material was used as the specimen based on several factors.
The mechanical properties of the base metals were determined using a spark emission machine and using a standard tensile test in conformity with ASTM E8M [20].
Microstructures and mechanical properties of resistance spot welded joints of 16Mn steel and 6063-T6 aluminum alloy with different electrodes.

It possesses excellent physical and chemical properties including the highest hardness and thermal conductivity, and good resistance to chemical erosion.
Because of these excellent properties, they render it appropriate for numerous mechanical, optical, thermal, and electrical applications [1].
In the second part, the factors were set the down force 1 and 4 kg, temperature 70 and 90 �, and rotational speed 100 and 200 rpm.
In this figure, one finds that the main polishing factors are down load, rotational speed, and temperature in order.
Although the main factors affecting surface quality also follow the order of load, temperature and speed, high rotational speed does not warrant for good surface roughness.

Mechanical as well as the metallurgical properties are greatly influenced by the degree of dilution.
Dilution is the key factor responsible for mechanical as well as metallurgical properties of the welded member and is defined as the change in chemical composition of a deposited filler material caused by the mixing with the base material or previously deposited weld material in the deposited weld bead.
Strength, ductility, resistance to weld cracking, corrosion resistance, heat treatment and other properties may be greatly influenced by the degree of dilution.
The microstructure obtained in welding of steel can be affected by a large number of factors; the most notable among them are the weld metal chemistry (which in turn is dictated by the base metal composition, filler metal composition, the slag-metal reaction and gas-metal reaction), the cooling rate (largely dictated by the process parameters) and any other pre and post weld heat treatments done.
Among all the factors mentioned above, the chemical composition, cooling conditions, and austenite grain size capture the most essential features of a weld metal.