(a) The treatment efficiency in MBR was observed under different aeration rates. It was found that the optimal rate of aeration for removal efficiency was 3m/h.Increasing aeration rate resulted in shear stress, which caused elevated rates of sludge floc breakage, and consequently, supernatant COD. Excessive aeration rate could consequently also affected nitrogen removal by destructing anoxic co...

OBJECTIVES When implants are inserted, the initial implant stability is dependent on the mechanical stability. To increase the initial stability, it was hypothesized that bone condensation implants will enhance the mechanical stability initially and that the moderately rough surface will further contribute to the secondary stability by enhanced osseointegration. It was further hypothesized that...

This work outlines the etiological factors for exercise-related foot blisters and the pertinent prevention strategies related to these causes. Blisters result from shear forces within the epidermis causing cell necrosis. The extent of skin shear is influenced by friction at the skin and other interfaces, various skin characteristics, bony movement, and the shear modulus of the foot ware. The nu...

The effect of hydrodynamic shear force on the nitrogen removal performance of anaerobic ammonium oxidation (anammox) granules was studied in four batch-type Expanded Granular Sludge Bed (EGSB) reactors. The reactors were operated under different hydrodynamic shear force (0.021, 0.024, 0.026 and 0.029 N m, respectively) by control the circulation flow rate. The results showed that nitrite and am...

This paper deals with the results from experiments concerning the effects of an increasing shear rate at the edge of the membrane on reducing concentration polarization and on controlling membrane fouling during filtration of river water. Concentration polarization of humic substances in NF and MF membranes can be reduced by increasing the shear rate. The concentration polarization model can pr...

ARTICLE INFO Abstract Article History: Received 2 August 2015 Accepted 2 November 2015 Statement of Problem: There is no enough published data about the shear bond strength of resin modified glass ionomer adhesives on caries-affected primary tooth dentin excavated using minimally invasive systems. Objectives: To evaluate the shear bond strength of 2 different adhesives (one resin modified glass...

To investigate the molecular mechanisms of laminar shear stress on the inhibition of apoptosis in endothelial cells, human umbilical vein endothelial cells (HUVECs) were starved in medium containing 2% fetal bovine serum (FBS) and treated with 15 dyne/cm2 shear stress. We confirmed that 15 dyne/cm2 shear stress inhibited the expression of Omi/HtrA2 at the mRNA and protein levels in cultured HUV...

Adiabatic shear banding during high speed machining is important to understand material removal mechanisms. This paper investigates the microstructure of adiabatic shear bands (ASBs) in the serrated chips produced during the high speed machining of AISI 1045 hardened steel. Optical microscope, scanning electronic microscope(SEM) and transmission electronic microscope(TEM) were used to explore t...

Injectable hydrogels are becoming increasingly important in the fields of tissue engineering and drug delivery due to their tunable properties, controllable degradation, high water content, and the ability to deliver them in a minimally invasive manner. Shear-thinning is one promising technique for the application of injectable hydrogels, where preformed hydrogels can be injected by application...