statement of problem: endodontic treatment of necrotic teeth with open apices is a challenge. after ruling out surgery as a treatment scheme and introduction of the multivisit apexification which in turn had its disadvantages, apical plug seems to be a suitable substitute treatment plan for such cases. apical plug makes the treatment through formation of a barrier against the obturating materia...

background: echinococcosis is one of the most important helminthic zoonotic diseases in iran. intestinal scraping tech­nique (ist), the traditional method for diagnosis of the infection in definitive hosts, has many disadvantages including low sus­ceptibil­ity and being expensive, hazardous and laborious. detection of coproantigens in fecal samples by enzyme-linked immu­nosorbent assay (ca-elis...

To eliminate a “back-door rule”, Rec. 60C.1 in the Melbourne Code (McNeill & al. Regnum Veg. 154. 2012) was moved into Art. 60.8 of Shenzhen (Turland 159. 2018), but doing so opening sentence rewritten. The wording introduces several new issues, one which is added phrase “derived from personal names”. This can be read variously, could include any, or all, following: translations names Latin (or...

In order to obtain the precise Pu isotope composition of Irish Sea water reference material issued by the International Atomic Energy Agency (IAEA-381), we analyzed the activities of (239)Pu, (240)Pu and the atom ratio of (240)Pu/(239)Pu by a highly sensitive isotope dilution SF-ICP-MS method combined with two-stage chromatographic separation and purification. With a mean chemical yield of 65% ...

Previous studies have shown that molecules related to erythrocyte spectrin are present in the cortical cytoplasm of nonerythroid cells. We report here the localization by immunoelectron microscopy of one such molecule, TW-260/240, in the brush border of intestinal epithelial cells. Using highly specific antibodies against TW-260 and TW-240 as well as antibodies against fodrin, another spectrinl...

delta(18)O values of mollusks recovered from near-shore marine cores in northwest Iceland quantify significant variation in seasonal temperature over the period from approximately 360 B.C. to approximately A.D. 1660. Twenty-six aragonitic bivalve specimens were selected to represent intervals of climatic interest by using core sedimentological characteristics. Carbonate powder was sequentially ...

Ciliary beat frequency (CBF) is a key factor in the defense of the airways and ATP can stimulate CBF by increasing intracellular calcium concentration ([Ca]i). However, the regulatory effects of ATP have been mainly studied in cultured or isolated epithelial cells from the large cartilaginous airways. The aim of this study was to evaluate the regulation of CBF in small airways of lung slices th...