This study deals with a three-point flexure test for the metal-ceramic bond involving geometrically simple specimens (alloy strips partly coated ceramic) that can be fabricated reasonable expenditure and sufficient reproducibility. The calculation of stress distribution in such aid finite-element method (FEM) is presented. aim this numerical analysis is: to investigate ceramometallic specimen dimensions that, large number experiments, have proven lead debonding at one end ceramic veneer...

Abstract The evaluation of the long periods and crystallite lengths original pretreated solvent spun cellulose fibres revealed that they consist about 90% crystalline in direction fibre axis. In case high wet modulus viscose this percentage is only 50–60%. intensity period lower than corresponding to a smaller difference between their amorphous orientation factors. There existing significant correlation period.

Abstract The development of new methods spinning cellulosic fibers requires a better understanding their fibrillar structure in order to explain special physical properties. By means transmission electron microscopy (TEM), light (LM), small‐angle X‐ray scattering (SAXS), and wide‐angle diffraction (WAXD) it is shown that six different kinds regenerated consist uniform elementary fibrils composed cellulose‐II crystals. Systematic distinctions between these fiber types are found with regard...

Bruxism may be involved in the aetiology of myofascial neck pain. The objective this study was to test hypothesis that anterior and posterior muscles co-contract during jaw clenching. Ten subjects developed different feedback-controlled submaximum bite forces a variety bite-force directions by means transducers. electromyographic activity sternocleidomastoid supra/infrahyoidal muscles, semispinalis capitis, cervicis, multifidi recorded use surface electrodes intramuscular wire electrodes,...

The first step to lower energy impact of products is quantify the current impact. mayor consumer in machine tools not spindle, it's auxiliary units, such as pneumatic, hydraulic system, actuators, chip disposal and others. quantification achieved by precise measurements from signals PLC with high sampling rates. analysis this data done Engineering Apps (eApps). per component reveals potential for reduction. reduction can be switching a more efficiency component. In research examples...

An extracellular enzyme activity in the culture supernatant of acarbose producer Actinoplanes sp. strain SE50 catalyzes transfer acarviosyl moiety to malto-oligosaccharides. This transferase (ATase) is encoded by a gene, acbD, putative biosynthetic gene cluster for alpha-glucosidase inhibitor acarbose. The acbD was cloned and heterologously produced Streptomyces lividans TK23. recombinant protein analyzed assays. AcbD (724 amino acids) displays all features alpha-glucosidases and/or...

summary The aim of this study was to investigate (i) whether the masseter muscle shows differential activation under experimental conditions which simulate force generation during clenching and grinding activities; (ii) there are (a) preferentially active regions or (b) directions show enhanced activation. To answer these questions, electromyographic (EMG) activity right recorded with five intramuscular electrodes placed in two deep areas three surface regions. Intraoral transfer measurement...

Although knowledge of short-range kinetic interactions between antagonistic teeth during mastication is essential importance for ensuring interference-free fixed dental reconstructions, little information available. In this study, the forces on and displacements molar biting simulating power stroke a chewing cycle were investigated by use finite-element model that included all components human masticatory system, including an elastic food bolus. We hypothesised can approximate loading...

Missing Data is of concern in smart manufacturing. There are various reasons why data may be missing. Buffering issues, sensor failure, or protocol issues can cause missing entries skipped captures. This leads to distorted datasets, failure train models, and either disregard, deletion records typically vast manual re-work efforts. paper shows types approaches detect them. Replacement fill-in presented their limitations highlighted. A more precise imputation method beyond the state art...

Abstract A review is given on comparative investigations onto the structure of regenerated cellulose fibers regular viscose type (modal) and solvent spun lyocell type, namely NMMO fiber from a solution in N–methylmorpholine N–oxide water. It was found that mechanical properties wet state detoriate less. This explained by an increased length crystallites, less clustering crystalline regions, shorter better oriented amorphous portion. These structural features could be caused different...

Abstract The kinetics of the enzymatic hydrolysis regenerated cellulose fibers before and after acid prehydrolysis has been investigated. This pretreatment changes from a monophasic to biphasic first order reaction. Prolonged increases proportion enzymatically easily hydrolyzable form. were correlated with corresponding degree polymerization, crystallinity crystallite size.

In 10 normal subjects, the electromyographic (EMG) activities of masseter, anterior and posterior temporalis, medial pterygoid, inferior lateral as well digastric, were bilaterally recorded during clenching with various resulting force vectors. The intraoral transfer was achieved a three‐component transducer. direction magnitude vectors controlled by visual feedback. goal study to investigate how directions at constant influence EMG activity in masticatory muscles gradual increase horizontal...

Realistic masticatory muscle and temporomandibular joint forces generated during bilateral jaw clenching are largely unknown. To determine which directions load muscles joints most heavily, we investigated based on feedback-controlled electromyograms of all muscles, lines action, geometrical data from the skull, physiological cross-sectional areas acquired same individuals. identify possible motor control strategies, applied objective functions. The medial pterygoid turned out to be heavily...