The triticeous cartilage — redefining of morphology, prevalence and function

Background: Triticeous cartilage is a small cartilaginous component of the laryngeal skeleton. This cartilage, located in posterior end of the thyrohyoid ligament, presents in different shapes. Radiological studies indicate clinical and anatomical importance of the triticeous cartilage but these studies have limited information due to inadequate inspection method. Computed tomographic angiography is able to evaluate the triticeous cartilage with using three-dimensional images in more detail. The aim of this study is to describe prevalence and morphological properties of the triticeous cartilage. Materials and methods: We examined computed tomographic angiography images of 746 patients (368 women, 378 men) retrospectively. Shapes, calcification degrees, volumes, lengths and wideness of the triticeous cartilage were evaluated by OsiriX-Lite software. Results: According to our results, triticeous cartilage presents common in the examined population (68.1%). The prevalence of the triticeous cartilage was higher in men than in women. We also found that the degree of calcification was not related with age and gender. Conclusions: Clinical importance of the triticeous cartilage is that it could be misdiagnosed with atherosclerosis in common carotid artery because the triticeous cartilage is located almost at same level as the bifurcation of the common carotid artery. Therefore, clinicians should be aware about the triticeous cartilage

Root Canal Anatomy of Maxillary and Mandibular Teeth

It is a common knowledge that a comprehensive understanding of the complexity of the internal anatomy of teeth is imperative to ensure successful root canal treatment. The significance of canal anatomy has been emphasized by studies demonstrating that variations in canal geometry before cleaning, shaping, and obturation procedures had a greater effect on the outcome than the techniques themselves. In recent years, significant technological advances for imaging teeth, such as CBCT and micro-CT, respectively, have been introduced. Their noninvasive nature allows to perform in vivo anatomical studies using large populations to address the influence of several variables such as ethnicity, aging, gender, and others, on the root canal anatomy, as well as to evaluate, quantitatively and/or qualitatively, specific and fine anatomical features of a tooth group. The purpose of this chapter is to summarize the morphological aspects of the root canal anatomy published in the literature of all groups of teeth and illustrate with three-dimensional images acquired from micro-CT technology.info:eu-repo/semantics/publishedVersio

Analiza statystyczna i opis właściwości mieszanek Viloft/poliester i Viloft/bawełna przędzionych systemem obrączkowym

Viloft is a novel regenerated cellulosic fibre with a special cross section which creates air gaps in the yarn and improves the thermal properties of the fabric. This fibre is mainly used with the blends of polyester and cotton available on the market. In this study, it was aimed to analyse the mechanical and physical properties of viloft/polyester and viloft/cotton blended ring-spun yarns. For this purpose, five different blend ratios of viloft/polyester and viloft/cotton yarns (100%-0%, 67%-33%, 50%-50%, 33%-67% and 0%-100%) were spun as 19.7 tex on a ring spinning system. The breaking force, elongation (%), unevenness and hairiness results of these blended yarns were analysed using a simplex lattice mixture model. In addition, Tukey’s test was also applied in order compare the means of the properties of the blended yarns. Statistical analysis showed that the blend ratio is significant for all the properties of viloft/polyester and viloft/cotton blended yarns. However, Tukey’s test indicated that a few of the blends of viloft/polyester or viloft/cotton yarns do not differ from each other. Polyester blended viloft yarns showed higher breaking force, elongation and hairiness, but lower CVm % values compared to cotton blended ones.Viloft jest nowym regenerowanym włóknem celulozowym o specjalnym przekroju włókien charakteryzującym się obecnością w przędzy przestrzeni powietrznych, które poprawiają właściwości termiczne wytworzonych materiałów. Viloft oferowany jest na rynku głównie jako mieszanka z poliestrem i bawełną. W pracy analizowano właściwości mechaniczne i fizyczne przędz przędzionych systemem obrączkowym. Do tego celu wyprodukowano pięć różnych mieszanek o zróżnicowanym stosunku poszczególnych włókien i masie liniowej 19,7 tex. Badano siłę zrywania, wydłużenie przy zrywaniu, nierównomierność i włochatość. Do przeprowadzenia statystycznej analizy uzyskanych wyników badań autorzy posłużyli się modelem sympleksowym kraty dla mieszanki. Ponadto zastosowano również test Tukey’a mający na celu porównanie wartości średnich analizowanych właściwości przędz. Na podstawie przeprowadzonej analizy statystycznej wykazano, że zmiana proporcji (udziałów) procentowych składników tworzących mieszankę wpłynęła istotnie na wszystkie analizowane właściwości przędz mieszankowych obrączkowych wytworzonych z mieszanek włókien Viloft z włóknami poliestrowymi oraz włókien Viloft z bawełną

Spontaneous subdural hematoma associated with kasabach-merritt syndrome: A case report [Kasabach-Merritt sendromu ile i·lişkili spontan subdural hematom: Bir olgu sunumu]

[No abstract available

Boiling heat transfer enhancement in mini/microtubes via polyhydroxyethylmethacrylate (pHEMA) coatings on inner microtube walls at high mass fluxes

In this experimental study, flow boiling in mini/microtubes was investigated with surface enhancements provided by polyhydroxyethylmethacrylate (pHEMA) coatings (of ~30 nm thickness) on inner microtube walls. Flow boiling heat transfer experiments were conducted on microtubes (with inner diameters of 249 µm, 507 µm and 998 µm) having inner surfaces with pHEMA coatings, which increases heat transfer surface area, enable liquid replenishment upon bubble departure, provide additional nucleation sites, and serve for extending Critical Heat Flux (CHF) and enhancing boiling heat transfer. De-ionized water was utilized as the working fluid in this study. pHEMA nanofilms of thickness ~30 nm on the microtube walls were coated through initiated chemical vapor deposition (iCVD) technique. Experimental results obtained from coated microtubes were compared to their plain surface counterparts at two mass flux values (10,000 kg/m2s and 13,000 kg/m2s). In comparison to the plain surface microtubes, coated surfaces demonstrate an increase up to 24% and 109% in CHF and heat transfer coefficients, respectively. These promising results support the use of pHEMA coated microtubes/channels as a surface enhancement technique for microscale cooling applications