OBJECTIVE To evaluate the post-operative sensitivity of occlusal restorations using different dentin adhesives performed by an undergraduate and a post-doctorate dentist. MATERIALS AND METHODS One hundred and eighty-eight molar occlusal restorations were placed in 39 patients (ages between 18 and 30) using 3 different kind of adhesive systems; Optibond FL (OBF), Clearfil Protect Bond (CPB), a...

Purpose The purpose of this study is to assess the validity psychological safety (PS), empowerment (PE), intrapreneurial behaviour (IB) and individual performance (IP) construct measurements originally developed in Western individualistic cultures. Design/methodology/approach Proportionate stratified systematic sampling was used among production/operations middle managers Nigerian medium enterp...

Clostridium perfringens type E iota toxin consists of two unlinked proteins designated as iota a (Ia; molecular mass approximately 47 kDa), an ADP-ribosyltransferase and iota b (Ib; molecular mass approximately 81 kDa) which binds to the cell surface and facilitates Ia entry into the cytosol. By Western-blot analysis, Ib incubated with Vero cells at 37 degrees C generated a cell-associated, SDS...

The structures of five of the possible six isomers of (E,E)-1,4-bis(nitrophenyl)-2,3-diaza-1,3-butadiene are reported, including two polymorphs of one of the isomers. (E,E)-1,4-Bis(2-nitrophenyl)-2,3-diaza-1,3-butadiene, C(14)H(10)N(4)O(4) (I), crystallizes in two polymorphic forms (Ia) and (Ib) in which the molecules lie across centres of inversion in space groups P2(1)/n and P2(1)/c, respecti...

The effects of unsaturated fatty acids on membrane properties were studied using conventional whole-cell patch-clamp recording of isolated wing (Ib) cells in bullfrog (Lithobates catesbeianus) taste discs. Applying arachidonic acid to the bath induced monophasic inward currents in 60% of wing cells and biphasic inward and outward currents in the other cells. The intracellular dialysis of arachi...

The bleeding of cementitious materials corresponds to the settlement granular skeleton accompanied by accumulation water at surface (bleed water). Part this (internal bleeding) remains trapped under aggregates (sand or gravel) reinforcements. excess can weaken bond between matrix and (or reinforcements), which affects mechanical performance durability material. This study aims investigate effec...

This paper introduces interface-based object-oriented programming (IB). Unlike class-based OO programming (CB), in IB there is no need for classes. To support state, IB uses abstract state operations, such as getters, setters or clone-like methods. This new way to deal with state allows flexibility not typically available in CB. In IB state (including mutable state) can be type-refined in subty...

a series of novel 2-aminopyrimidine and 2-substituted-4,6-diaminopyrimidine derivatives have been synthesized and their anti platelet aggregation activities were assessed against adp and arachidonic acid- induced platelet aggregation in human plasma using light transmission aggregometry. none of the compounds showed satisfactory activity against the aggregation induced by adp. however, satisfac...

The hindered internal rotations around the partial carbon-carbon double bond, nitrogen-carbon and carbon-carbon single bonds within the 2-(2-chloro-phenothiazine-l-yl)-3-(triphenylphosphoranylidene) butandioate has been experimentally studied by the dynamic H NMR spectroscopic in variable temperatures. The activation (∆H, ∆S, ∆G) and kinetic (kc, Ea) parameters have been calculated in a series ...

This paper presents an experimental investigation of bond-strengthening hooks as a new method to increase bond strength along flexural reinforcing bars in reinforced concrete (RC) beams. The proposed method attempts to increase confining stiffness around the flexural bars by placing U-shaped hooks and to prevent premature bond splitting failure. Ten specimens with different numbers and sizes of...