Background and Aim: ZOE has been used in different fields of dentistry for many years. A locally produced component (Zoliran) has been recently introduced to the marketwith similar characteristic to the original Zonalin. Because of a lower cost involved to use Zoliran cement and its availability, confirm reliability of its physical properties. This investigation was designed to assess the Compressive strength of Zoliran cement in comparison to Zonalin cement as the standard material. Materials and Methods: Five samples with dimension of 4mmx6mm of each cement were provided and stored in distilled water in 370C±10C for a period of 24 hours. The lowest load of force was registered as the reference to which the sample could be broken by(according to the criteria No: 30 of ANSIIADA). The value of Compressive strength was then calculated using the following formula (K =4F/πD2 ). Results: The mean Compressive strength of five samples was measuredas: 14.33 Mpa for Zoliran cement and 31.83 Mpa for Zonalin cement. The mean Compressive strength of Zonalincement was significantly higher than the mean suggested in ANSl/ADA Specification No.30. The mean Compressivestrength of Zoliran cement was also lower than the mean value registered in ANSI/ADA SpecificationNo.30. Conclusion: Compressive strength of Zoliran cement was significantlylower than that of Zonalin cement. Further tests are required to compare the other physical properties of this material before it can be clinically recommended.

A composite material is made of resin and fibers with different mechanical properties. The mechanical property of the composites is a mixture of the mechanical properties of the resin and fibers. The main goal of this research is determining the optimum fiber volume fraction of unidirectional composites to achieve the best strength properties. Based on the results obtained in this research, the Compressive strength in the fiber direction of the composites is used to measure the optimum fiber volume fraction. In this research this idea is studied using the failure theories and the results are evaluated by conducting experiments, based on ASTM standard, on E-Glass/Epoxy composites. After comparing the analytical and experimental results, the optimum fiber volume fraction of the composites is defined. Also, by applying the strength reduction factor, the allowable deviation from optimum fiber volume fraction is achieved. This result can be used as a quality control criterion.

\Masonry buildings remain popular worldwide due to their readily available materials, high Compressive strength, ease of construction, and affordability. Therefore, understanding the impact of mortar on the Compressive strength of masonry is essential. This study aimed to determine the Compressive strength and failure patterns of masonry, focusing particularly on mortar. An experimental program was conducted, involving a total of 54 specimens: 27 cubes, 27 cylinders, and 9 masonry prisms. The cement-to-sand ratio (c/s) varied at ratios of 1:3, 1:4, and 1:5, while the water-to-cement ratio (w/c) remained fixed at 0.45. Each prism consisted of 5 bricks separated by a 10 mm mortar layer. Compressive strength data for cubes and cylinders were collected at 3, 7, and 28 days, while data for prisms were collected only at 28 days. The best results have been obtained at a c/s ratio of 1:3, with Compressive strengths of 3555.5 psi for cubes, 3282.98 psi for cylinders, and a Compressive force value of 129.33 kN for prisms at 28 days. The Compressive strength of cubes and cylinders increases by approximately 68.19% and 64.61%, respectively, and the Compressive force of masonry prisms increases by approximately 76.48% at 28 days when the cement-to-sand ratio is changed from 1:5 to 1:3. Stresses, graphs, and failure patterns have been analyzed and compared with the Bangladesh National Building Code (BNBC) 2020 and available literature, revealing a strong correlation.

Structural characteristics of concrete incorporating Colloidal Nanosilica (CNS), Metakaolin (MK) and Alccofine (AF) were comparatively studied using X-Ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Field Emission Scanning Electron Microscope (FESEM), and Fourier Transform Infrared spectroscopy (FTIR). The plasticizer demand and Compressive strength at 3,7,28 and 90 days of curing ages were also determined. The results indicated that the demand for plasticizer content increased with CNS and MK incorporation owing to their large surface area and rough surface texture, respectively. However, AF decreased the plasticizer demand due to glassy surface morphology. Also, the Compressive strength increased with replacement ratio. The tetranary blended systems (M6) proved to be more advantageous compared to binary, ternary and normal OPC systems. FTIR, TGA, XRD and FESEM analysis were consistent with the results of Compressive strength. The improvement in properties of concrete at early ages was attributed to filler and nucleation effect of CNS and AF. At later ages, CNS modified the CSH by increasing the length of silicate chains, AF and MK diminished the portlandite content by utilizing it in pozzolanic reaction and filling of pores partially or completely especially by secondary CSH gel, led to denser structure.

Quasi-static Compressive tests to determine the mechanical properties of individual brown rice kernels were conducted on whole kernel rice of Hashemi and core specimens of Khazar varieties. The magnitudes of the failure force, failure deformation, breakage energy and apparent elasticity modulus for Hashemi kernels were determined at two moisture content levels, namly, %11 and %17 (w.b.) at four levels of loading rates ranging from 1 mm/min to 5.5 mm/min. For the Khazar variety, the magnitudes of failure stress and strain, as well as toughness and elasticity modulus were determined at moisture content of %14 (w.b.) for five levels of loading rates ranging from 0.5 mm/min to 1.5 mm/min.Statistical analysis of the test results showed that deformation rates had no significant effect on the mechanical properties. Moisture content had a significant effect on all grain mechanical properties. Decreasing moisture content caused significant increases in all these properties. The failure force and the breaking energy for Hashemi kernels increased more than double, when the moisture content decreased from 17% to 11%. The magnitudes of failure force and breaking energy varied from 56 N to 115.7 N, and from 2.01 mJ to 5.23 mJ, respectively. The means of apparent elasticity modulus for Compressive test on the core specimens was calculated to be 1.762 GPa at 17% moisture content and 2.835 GPa at 11% moisture content. Compressive strength and apparent elasticity modulus for Khazar variety were determined to be 36 MPa and 973.4 MPa, respectively. Some of the mechanical properties compared well with the published data.

: In this research, the electro-optical aspects of Tetra-Hexagonal-Carbon allotrope as a two-dimensional nanostructure under Compressive buckling parameter based on density functional theory (DFT) with PBE-GGA full potential approximation method using simulation software and computational codes based on first-principles calculations have been investigated. The analysis of the results obtained from the calculations of the electronic properties of this nanostructure, such as the band gap and density of states (DOS) under buckling change, indicates that the energy band gap of this nanosheet as a direct band gap semiconductor with 1.61 eV, increases slightly under the influence of the Compressive buckling factor and then decreases down to 1.11 eV by applying higher Compressive buckling factors. The optical properties of this nanosheet have smooth and regular changes in the out-of-plane polarization, by applying Compressive buckling conditions in the visible light spectrum. Also, according to the obtained results, an acceptable match between the electronic and optical properties of this two-dimensional nanostructure is observed, which indicates the correspondence of electronic and optical behaviors, which can predict this carbon nanosheet is a suitable material for designing electro-optical devices.

Recently, Functionally Graded Scaffolds (FGSs) have attracted a lot of attention as bone replacements due to their gradient porosities as well as a bone structure. In present study titanium functionally graded scaffolds (FGSs) were fabricated by powder metallurgy route using Mg and carbamide as space holders. The arranged layers with 20, 40 and 60 Vol. % porosities were compacted in steel die using uniaxial pressure of 500 MPa before sintering in sealed quartz tubes at 1100 ° C for 3 hours. Image analyzing results and scanning electron microscope (SEM) observations showed more regular shapes and sizes of pores in FGSs using Mg as a space holder compared to carbamide. The observed Compressive strength and Young’ s moduli of the FGSs having Mg as a space holder were in the range of 47-160 MPa and 25-75 GPa, respectively which can be appropriate as bone replacements. The results of MTT assay showed that the values of proliferation rate were higher in samples produced using Mg.

Agricultural products are affected by static and dynamic forces at different stages of harvesting, handling and processing. In most cases, the damages are inflicted upon raw products. In the present study the mechanical properties of tomato fruits were found out for two cultivars (Super Bta and Petoerly Ch), during 4 periods of time (1, 5, 10 and 15 days past harvest), and at two levels of fruit sizes (small and medium). Statistical analysis was performed in the form of a split-plot arrangement in time with a completely randomized design of 10 replications. The effect of time past harvest was significant on the exerted force and deformation at bioyield points. Rate of deformation and rate of force at biologic yield points were found out to be greater for petoerly Ch than for super Bta variety. Also, the effect of variety was significant on deformation at rupture point. Tomatoes with of the small size were found to be tougher than the medium ones. Smaller size fruits are tougher and need less force to rupture. Also, significant differences were observed between different size fruits for the following parameters: maximum force, maximum deformation, deformation at rupture point and force at bioyield point. At one day past harvest petoerly variety was found to be of more strength, in uniaxial loading, than super Bta, as compared with other points of time.

This paper represents the parametric effects on slump and Compressive strength of aluminosilicate based Geopolymer concrete using by Taguchi method. A total of nine mix proportions were considered to evaluate the effect of sodium hydroxide (NaOH) solution, Solution/Binder (SB) ratio and the percentage of superplasticizer. Results indicated that the highest slump of 165 mm and 28 days Compressive strength of 68.37 MPa was obtained for aluminosilicate based Geopolymer concrete with the superplasticizer, Solution to Binder (SB) ratio and extra water) parameters. By using the selected (Signal-to-Noise (SN) ratio graphs, the best combination of parameters for slump and Compressive strength properties was also obtained. The mix with the best combination of parameters was considered and partially replaced with silica fume and rice husk ash. The inclusion of additional silica (in form of silica fume and rice husk ash as Ground Granulated Blast Furnace Slag (GGBFS) replacement), most significantly influenced the slump and Compressive strength properties.