in this study, the vibration of cracked plates is investigated using the differential quadrature method and experimental modal analysis. the crack, which is assumed to be open, is modeled by the extended rotational spring. with its finite length, the crack divides the plate into six segments. then, the differential quadrature is applied to the governing differential equations of motion and the ...

Vibration and noise pollution is one of the main in modern society. In order to obtain good vibration damping effect, more effective phononic crystals should be designed. Based on theory elastic wave propagation solids, three types are designed this paper using tungsten blocks embedded a rubber matrix, which cup-shaped crystal, solid cylindrical hollow crystal. Firstly, band gap characteristics...

PURPOSE To evaluate the fixation strength at the interface between the Kerboull-type plate and bone cement in 6 experimental conditions. METHODS Experimental materials comprised a simulated acetabular block, a simulated Kerboulltype plate, a pressuriser cover, a pressuriser arm, and bone cement. The simulated Kerboull-type plate was placed on the simulated acetabular block, with the pressuris...

This study presents a finger-triggered portable polydimethylsiloxane suction cup that enables equipment-free microfluidic pumping. The key feature of this method is that its operation only involves a “pressing-and-releasing” action for the cup placed at the outlet of a microfluidic device, which transports the fluid at the inlet toward the outlet through a microchannel. This method is simple, b...

BACKGROUND AND PURPOSE Healing of acetabular bone grafts may be difficult to assess in conventional radiographs. We used PET to analyze healing of morselized bone allografts, impacted in large osteolytic acetabular defects at revision arthroplasty. PATIENTS AND METHODS 7 cases had a cup revision because of loosening, with repair of a segmental defect using a perforated, wide and thin plate. T...

The new complexes of Cr(III), Mn (II), Fe(III) and Cu(II) complexes with the chalcone ligand were studied on the growth of Rhabdomyo sarcomas (RD) cell Line in human by using in vitro system and compared with anticancer drug cisplatin (cis-pt) as appositive control. The cancer cells were treated with different concentration and cis-pt after 72 hr. exposure time. The cytotoxic activity was teste...

The antimicrobial activities of aqueous, ethanolic and petroleum ether extracts of the leaves of Basella rubra were evaluated in the present study by measuring the inhibition zones using Cup Plate Diffusion method. The inhibition zones were significantly different (P<0.001) in each plant extract. The ethanolic extract showed maximum activity with zone of inhibition (14.3±1.82 mm) against E.coli...

The compounds Gallic acid (GA), rutin(R), quercitin (Q), ellagic acid (EA) and sitosterol(S) were isolated from the methanolic extract of the leaves of Tectona grandis. These compounds were subjected to antimicrobial and antioxidant activity. The zone of inhibition of isolated compounds was evaluated by cup plate method against bacteria i.e. Staphylococcus aureus, Bacillus subtilis, Eschericia ...

Background: Candida species are an important cause of opportunistic infection in the oral cavity of immunocompromised patients. Various antifungal agents have been used for the treatment of oral candida infection. Tea tree oil is a herbal product which is known to have broad antifungal properties. Objective: To compare the antifungal efficacy of 1% tea tree oil, 1% clotrimazole, and 0.2% chlorh...

New coordination complexes of Co, Ni and Zn with Schiff base N’-((2-thioxo-1,2-dihydroquinoline-3yl)methylene) pyridine-4-carbohydrazide have been synthesized and characterized by several techniques using elemental analysis (C, H, N), IR spectra and 1HNMR spectra. The new Schiff base has been synthesized by the reaction of pyridine-4-carbohydrazide and 2-thioxo-1,2dihydroquinoline-3-carbaldehyd...