Periodontal mechanoreceptors and bruxism at low bite forces

Objective: In this study, we examined if 6–9 Hz jaw tremor, an indirect indicator of Periodontal Mechanoreceptor (PMR) activity, is different in bruxists compared to healthy participants during production of a low-level constant bite force. / Methods: Bite force and surface EMG from the masseter muscle were recorded simultaneously as participants (13 patients, 15 controls) held a force transducer between the upper and lower incisors very gently. / Results: Tremor in 6–9 Hz band for bruxists was greater on average compared to controls, but the difference was not significant, both for force recordings and EMG activity. / Conclusions: The low effect sizes measured with the current protocol contrast highly with those of our previous study, where larger, dynamic bite forces were used, and where jaw tremor was markedly different in bruxists compared with controls. / Significance: We have now gained important insight into the conditions under which abnormal jaw tremor can be elicited in bruxism. From a scientific standpoint, this is critical for understanding the ‘abnormality’ of PMR feedback in bruxism. From a clinical perspective, our results represent progress towards the development of an optimal protocol in which jaw tremor can serve as a biological marker of bruxism

Ecological and economic importance of studying propagation techniques of common hawthorn Crataegus monogyna Jacq.

Climate change as a fact of global warming requires the development of different perspectives on the planning and implementation of sustainable forestry techniques. Increasing temperatures cause drought on a global basis. In connection with, this using drought tolerant species in afforestation work is of great importance. In recent years Crataegus L. species (hawthorn) are also involved in afforestation. One of these species, C. monogyna, is characterized by drought tolerance. Furthermore, C. monogyna is the most important non­wood forest product species of Turkey. Hawthorn is widely used in medicine (treatment of coronary heart diseases), and cosmetics industry, agriculture and animal husbandry and human nutrition. On the other hand, it is used in erosion control, afforestation, industrial energy resources and for landscaping. Economic and ecological contribution of hawthorn to the national economy is quite high. Therefore, determination of suitable generative and vegetative reproduction techniques and vast production of seedlings of hawthorn species are extremely important. The characteristics of generative and vegetative propagation of Crataegus are discussed. For generative propagation of hawthorn species, the most effective and suitable procedure is treatment of seeds in ash solution. For vegetative propagation in culture in vitro the growth induced by BA (benzyladenine) and IBA (indole butyric acid) hormones increases the rate of callus formation and rooting. The best grafting technique is that splicing

Distance laboratory applications ERRL: A study on radio communication in electronic field

In the last decade, the effect of internet usage in education is gradually increased. When we look from academic perspective, the new technologies provided alternatives for students learning. As distance education becomes important everyday, the indispensable elements of teaching and education, laboratories must be reachable via remote connection. Consequently, the education that is going to be given to the students will be more flexible with respect to place and time constraints and students can reach laboratory facilities at any time and anywhere not only in lectures and practical hours. In this study, European Remote Radio Laboratory (ERRL) which is a distance remote Radio Frequency (RF) laboratory designed for electrical-electronics students, is described generally. The software architecture, infrastructure and experiment that can be done with a remote connection have been described

Effects of rosemary (Rosmarinus officinalis) extract addition on oxidative stability of fried sea bream (Sparus aurata) during chill storage (4C)

The effects of rosemary extract (2, 2.5 and 3%) on oxidative stability of fried sea bream (Sparus aurata) during chill storage (4±1C) were investigated. The results of this study showed that the highest free fatty acid (FFA), peroxide value (PV) and thiobarbituric acid (TBA) values were obtained from the control group (4.0% oleic acid, 23.7meq/kg and 2.59mg of malonaldehyde [MA]/kg, respectively) at the end of the storage period. In contrast to the control group, rosemary-treated samples showed lower FFA (3.0, 2.3 and 2.4% oleic acid, respectively), PV (10.1, 8.9 and 8.9meq/kg, respectively) and TBA (2.08, 1.57 and 1.16mg MA/kg, respectively) formation. Similarly, it was observed that the addition of rosemary extract has positive effect on the sensory quality of fried sea bream fillets. According to sensory assessment, the lowest overall sensory acceptability (5.08) was obtained in the control group, although the treated groups were still acceptable (6.33, 6.67 and 7.58, respectively) after 5 days of chill storage. © 2012 Wiley Periodicals, Inc

Oxidative stability of microencapsulated fish oil with rosemary, thyme and laurel extracts: A kinetic assessment

Antioxidant activity of rosemary (R), thyme (T) and laurel (L) extracts was evaluated for protection of fish oil during microencapsulation and heat-induced degradation. For this purpose, oil stability was optimised by comparing oxidation levels of fish oils which are exposed to high temperatures ie., 23 °C, 40 °C, and 60 °C in the presence of natural and commercial antioxidants ie., 1000 (1) 1500 (2) ppm extracts and two control groups without and with BHT (250 ppm) (C1, C2). Then, peroxide formation kinetics of the microcapsules were also determined. Peroxide values (PV) of microencapsulated fish oil in the presence of 1500 ppm rosemary (R2) were lower (3.08 mEq O2/kg oil) than the control group with commercial antioxidant (C2, 4.25 mEq O2/kg oil). Thiobarbituric acids (TBA) of R2, R1, and L2 (0.36 mmol MDA/kg oil, 0.56 mmol MDA/kg oil, 0.59 mmol MDA/kg oil respectively) were also lower than C2 (0.64 mmol MDA/kg oil). Besides, R2 and R1 (31.62 kJ/mol, and 30.82 kJ/mol) had higher activation energies than C2 (30.46 kJ/mol). As a result, it is revealed that rosemary and laurel extracts can successfully be applied to anchovy oil for improving the oxidative stability in microencapsulation by spray drying. © 2018 Elsevier LtdMinistry for Food, Agriculture, Forestry and Fisheries: TAGEM/HSGYAD/5/A05/P01/84 FDK-2014-2218This research which was a part of the Ph.D. thesis of Ahmet Faruk Yesilsu was funded by the General Directorate of Agricultural Research and Policies (Republic of Turkey Ministry of Food, Agriculture, and Livestock, Turkey) (Project No: TAGEM/HSGYAD/5/A05/P01/84 ). The authors would like to thank Cukurova University Research Fund (Project No: FDK-2014-2218 ) for providing the equipment and for financial support

Amino acid and fatty acid composition of wild sea bass (Dicentrarchus labrax): A seasonal differentiation

Seasonal variations in the amino acid and fatty acid compositions of wild sea bass (Dicentrarchus labrax) captured in the north eastern Mediterranean were investigated. In all seasons, the major amino acids in sea bass fillets were determined to be aspartic acid, glutamic acid and lysine. Methionine, tyrosine and histidine composition of the fillets were lower than those of the other amino acids in all seasons. The ratios of essential (E, g amino acid/16 g N)/nonessential (NE, g amino acid/16 g N) amino acids were observed to be 0.75 for winter, 0.76 for autumn, 0.77 for both spring and summer. Results showed that, sea bass fillets are well-balanced food source in terms of E/NE ratios in all seasons. In addition, seasonal differences in polyunsaturated fatty acid (PUFA) composition of the fillets were observed in all seasons. The major fatty acids of sea bass fillets were observed to be palmitic acid (16:0), oleic acid (18:1?9), eicosapentaenoic acid (EPA, 20:5?3) and docosahexaenoic acid (DHA, 22:6?3). The amounts of EPA+DHA in autumn, winter, spring and summer were determined as 0.16, 0.12, 1.14 and 1.02 g/100 g wet weight, respectively

Changes of Fatty Acid Composition in Frog Legs (Rana esculenta) during Cold Storage Period: Irradiation Effect

This study investigates the changes in fatty acid profile of gamma irradiated frog legs (Rana esculenta) during cold (2°C) storage period. Instead of freezing the frog legs for a prolonged shelf life, gamma irradiated fresh frog legs can be used for consumer satisfaction, because consumers prefer fresh frog legs and are willing to pay more than for frozen in the European market. Frog legs were irradiated at doses of 0, 4, and 5 kGy using 60Co sources. The main fatty acids of nonirradiated and irradiated frog legs (4 and 5 kGy) were palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1?9), linoleic acid (C18:2?6), and eicosatrienoic acid (C20: 3?3, ETE). Low doses (4 and 5 kGy) of irradiation treatment had no effect on fatty acid components of frog legs compared to the nonirradiated ones (p > 0.05). The fatty acid composition of frog meat was characterized by its high linoleic acid content (17.1-21.4%). At the initial stage of the storage, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) levels of frog legs remained unchanged with low doses of irradiation (p < 0.05). These fatty acids decreased significantly in the irradiated group (p < 0.05) at the end of the storage period. However, there were no significant changes in nonirradiated frog legs after 10 days of storage. Copyright © Taylor & Francis Group, LLC