the aim of this study was to report the endodontic management of right maxillary central incisor having two canals with vertucci canal configuration type iv . internal morphology of root canals is variable and often complex. therefore, to achieve a technically satisfactory endodontic outcome, the clinician must have adequate knowledge of the internal canal morphology and its variations in order...

single rooted primary mandibular first molar is a rare developmental anomaly. literatures reveal that failure of invagination of hertwig's epithelial root sheath leads to this unusual root form. thorough knowledge of root canal morphology and anatomical variations of primary teeth can help a pediatric dentist in successful root canal treatment. hereby, we describe two cases of primary mandibula...

During 2015–16, the presence of micromycetes species in aquatic ecosystems was studied in Iran. Samples were collected from rivers, lakes and wetlands. For isolation, agar disks were transferred to plates containing water samples. The plates were incubated at 25­–27° C for 21 days in 12 h light/12 h dark condition. Then from the mycelium grown on the agar disks, pure cultures were obtained. Fin...

During 2008, the presence of Paecilomyces species was studied in fields in Fars province. Soil samples were collected from 0–20 cm depth. The isolates were recovered using a soil dilution plate method directly from soil. Isolation was performed from soil using malt extract agar, rice agar, oat-meal agar and potato dextrose agar. Anamorphic characteristics such as morphology of conidiophores, ph...

Introduction: The aim of this article was to emphasize the importance of variations in root canal anatomy. Methods: This case report presents the endodontic management of a maxillary first molar with c-shaped palatal canal bifurcating into two canals at the middle third and exiting from a single apical foramen. The canal morphology was confirmed with the aid of cone beam computerized tomography...

this is the first report implementing combined density gradient centrifugation/zeta (dgc/zeta) sperm selection procedure for a couple with eleven previous intra cytoplasmic sperm injection/ in vitro fertilization (icsi/ivf) failure cycles. semen analysis was carried out according to world health organization criteria. protamine deficiency, dna fragmentation and morphology were assessed by chrom...

"Lumpy" increments to capital stock are warranted by increasing returns to plant construction. Following Boiteux, we attempt to reconcile the resulting double mismatch between capacity and demand, and between revenue and cost. Ignoring the budget problem at first, we derive conditions for optimal prices and for the optimal size and frequency of investment projects. Price is set at marginal oper...

on trust. Journal editors, reviewers and readers expect that a paper’s content reflects the opinions of the authors and all the available data. Recently, there has been concern that this trust may be undermined by the involvement of industry-paid writers in the preparation of publications (Bodenheimer, 2000). These professional writers are either employed directly by pharmaceutical companies or...

Small print This is just a first draft for the course. The content of the course will be what I say, not what these notes say. Experience shows that skeleton notes (at least when I write them) are very error prone so use these notes with care. I should very much appreciate being told of any corrections or possible improvements and might even part with a small reward to the first finder of parti...

I discuss three different selected topics in top quark physics. The first topic concerns the next-to-next-to-leading order calculation of the hadroproduction of top quark pairs and the role of multiple polylogarithms in this calculation. I report on an ongoing next-to-next-to-leading order calculation of heavy quark pair production in hadron collisions where the loop–by–loop part of the calcula...