Modeling of the axial crumpling of conical shells

The axial crumpling of frusta in the axisymmetric "concertina" mode is examined. A new theoretical model is developed in which the inward folding in both cylinders and frusta is addressed. The results were compared with previous relevant models as well as experimental findings. The flexibility of the model was substantiated by its capability of describing and estimating the inward folding in frusta in general as well as in cylinders as a special case. A declining trend of the eccentricity dependence with the D/t ratio was found in contrast with a previous theory which suggests total independency. ABAQUS 14-2 finite element software was employed to simulate the thin tube as a 3-D thin shell part. Numerical simulations of the process were found to, firstly, underestimate the theoretical values of inward folding in general, secondly anticipate more underestimations as the tubes become thinner and/or have larger apex angle, and finally anticipate as low as 300 apical angle frusta to revert its mode of deformation to global inversion

Co-creation to develop interventions to facilitate deep reflection for dental students

Background: Deep reflective practice is important in healthcare education to allow students to explore emotions associated with the learning experience, access deeper learning and develop their personal and professional identity. Previous research demonstrated that the current methods of reflective practice using logbooks at the end of a clinical session to facilitate reflection within this setting were viewed as suboptimal by staff and student users. To address this problem co-creation, or a ‘students as partners’ approach, was used to develop and implement a comprehensive intervention to facilitate deep reflection for undergraduate dental students. This included the production of educational resources, and development of an online safe space to reflect. Approach: In this paper we discuss the process of using co-creation with undergraduate dental students as a research methodology to successfully produce curricular change with respect to reflective practice by involving the voice and experience of student partners. These student partners were part of a team that included researchers and teaching staff and worked with other stakeholders within the institution within a wider team. Evaluation: This paper demonstrates the positive benefits of using co-creation with undergraduate dental students for students such as increased confidence, developing professional and personal skills and impacting meaningful change. Reflection: For researchers and educators, the process gave motivation and enjoyment in curricular development to address pedagogical problems and ensured that the developed intervention was sustainable and appropriate. The paper discusses benefits and challenges of co-creation to develop curricular change. This co-creation approach is recommended for solving similar problems in healthcare education

Surface plasmon resonance effects of gold colloids on optical properties of N719 dye in ethanol

In this work, the light absorption and emission effects of gold nanoparticles on some optical properties of N719 dye solution were studied via transmission electron microscopy, UV-vis absorption, and photoluminescence spectroscopy measurements. A facile method to fabricate four gold colloidal solutions with different concentrations containing ~15 nm gold nanoparticles was presented through pulsed laser ablation of a gold target immersed in ethanol, followed by a post-ablated size modification process. As-prepared gold colloids with different concentrations were mixed with certain dye solution. The absorption and fluorescence enhancement that resulted from the interaction between the dipole moments of the day and the surface plasmon resonance of gold nanoparticles were found to be strongly dependent on the gold colloid concentration. Fluorescence was enhanced by around 9-fold, which was achieved for the dye solution with the highest gold nanoparticles concentration

Posterior reversible encephalopathy syndrome in a child with cyclical vomiting and hypertension: a case report

<p>Abstract</p> <p>Introduction</p> <p>Posterior reversible encephalopathy syndrome is characterized by headache, nausea and vomiting, seizures and visual disturbances. It has certain characteristic radiological features, which allow diagnosis in the appropriate clinical setting and enable appropriate clinical therapy to be instituted.</p> <p>Case presentation</p> <p>A 10-year-old Caucasian girl who was hospitalized due to recurrent vomiting was diagnosed as having posterior reversible encephalopathy syndrome after an initial diagnosis of cyclical vomiting and hypertension was made.</p> <p>Conclusion</p> <p>Posterior reversible encephalopathy syndrome is a rare disorder in children. Early recognition of characteristic radiological features is key to the diagnosis as clinical symptoms may be non-specific or mimic other neurological illnesses. To the best of our knowledge this is the first case to report an association between posterior reversible encephalopathy syndrome, cyclical vomiting and hypertension. Furthermore, in this case, the resolution of the abnormalities found on magnetic resonance imaging over time did not appear to equate with clinical recovery.</p

Histological study for detection impact of plastic materials through drinking water on local male rabbits

The aim of this research was conductedto evaluating the effect of plastic containers in depicting hot weather on animal health through the histological techniques for liver and kidney organs. Laboratory animal used for this purpose, in animal house of agriculture college university of karbala and the experiment appear from 4/6/2020to4/8/2020. Thirty &nbsp;local male rabbits, age 4 months and average weight 1100-1400gm were divided into equal three groups ;First group T1 served as controls negative (10 animals) were received water in metallic container at room temperature. Second groupT2: Control positive (10animals) were received water in plastic container at room temperature, while third group T3: also (10 animals) and received water exposed to 45ºC temperature in plastic container. Feeding and water offered ad-libtum

Experimental study on the impact of drinking water in plastic container with exposing to summer heat on animal health

This study was conducted with the aim of evaluating the expected negative effects of using plastic containers in depicting hot weather on animal health by using some criteria for liver enzymes represented by Alinine transaminase ALT, gama glutamate tranaminase (GGT), as well as redox enzymes manuldehyde (MDA) and glutathione peroxidase (GPX) . The animal house in agriculture&nbsp; college&nbsp; university of Karbala was used for the purpose of housing the animals of this experiment and the experiment lasted from 4/6/2020 to 4/8/2020 . Thirty &nbsp;local male &nbsp;rabbits ,average weight 1100-1400gm and age 4 months were divided into three groups equally : First group G1 served as controls negative (10 animals)&nbsp; were received water in metallic container at room temperature.Second group G2: Control positive (10 animals) were received water in plastic container at room temperature. Third group G3: also (10 animals) were received water in plastic container at 45ºC&nbsp; temperature. Feeding and water offered ad-libtum. the result reviled that animals received water in plastic container with exposited to summer heat45ºC, recorded increased significantly after 45 days in ALT,GGT and monoldihyd (MDA) , as well as glutathione peroxidase recoded decreased significantly was observed

Histological Study for Detection Impact of Plastic Materials Through Drinking Water on Local Male Rabbits

The aim of this research was conductedto evaluating the effect of plastic containers in depicting hot weather on animal health through the histological techniques for liver and kidney organs. Laboratory animal used for this purpose, in animal house of agriculture college university of karbala and the experiment appear from 4/6/2020to4/8/2020. Thirty &nbsp;local male rabbits, age 4 months and average weight 1100-1400gm were divided into equal three groups ;First group T1 served as controls negative (10 animals) were received water in metallic container at room temperature. Second groupT2: Control positive (10animals) were received water in plastic container at room temperature, while third group T3: also (10 animals) and received water exposed to 45ºC temperature in plastic container. Feeding and water offered ad-libtum

A COMPARATIVE STUDY OF ORGANIC AND PHOSPHATE FERTILIZERS WITH IRRIGATION WATER QUALITY ON SOME SOIL PROPERTIES AND BEAN YIELD.

A factorial experiment was carried out in the Jisr Diyala region, east of Baghdad, to study a comparison of the types of organic fertilizers in interaction with the levels of phosphate fertilizer and the quality of irrigation water on some soil properties and yield of broad bean(Vicia faba L), using a randomized complete block design (RCBD) according to the split- split plot arrangement, and with three replications. Three factors were used, the first factor is water quality (well water and Diyala River water, I1 and I2) and the second is two types of organic fertilizers (control, sludge and sheep waste by 5 Mg ha-1, M0, M1 and M2) and the third is the addition of three levels of phosphorus (0, 80 and 160 kg ha-1, P0, P1, and P2) respectively. Seeds of faba bean (Vicia faba L.), cultivar Luz-de-otoho, were sown in winter season 2022, and analyzes were made for some physical and chemical properties of the soil after harvest. The results showed that the type of organic fertilizers had an effect on some chemical properties of the soil after harvest, as the electrical conductivity (EC) of the soil after harvest decreased significantly. The highest decrease was in the treatment I2M2P2, which amounted to 2.74 dS m–1, with a decrease of 52.10% compared to treatment (I1M0P0). The degree of soil reaction (pH) also decreased significantly, and the highest decrease was for treatment I1M2P2 at 7.41, with a decrease 3.89% compared to treatment (I2M0P0) . While the organic carbon increased significantly, and the highest significant increase was for the treatment I2M2P2 at 17.10 g Kgt-1, with an increase rate of 179.87% compared to treatment (I1M0P0). It was found that there was a significant effect on the dry pods weight, as the highest significant increase occurred when for the treatment I2M2P2 at 33.95 g plant-1, with an increase of 141.12% compared to treatment (I1M0P0)