Cell Phone Related Violations and Motorcycle Accidents: A Bayesian Approach

The effects of cell phone use on motorcycle riders’ behaviour are studied in smart city, Bhubaneswar, capital of state odisha, India. Most of motorcycle riders confess using cell phone devices while driving. Moreover, relationship between near miss and accidents has been found with the use of cell phone, reflecting a risk factor for motorcycle riders.“ This study examines the relationship between such type of behaviours, comprising calling and manipulating the screen, and the frequency of near miss and actual accidents among motorcycle riders. We conducted a web based survey measuring cell phone-specific violations, human errors, near miss and accident to motorcycle riders (N=289; age range; 18-60). We hypothesized that the relationship between cell phone use and near miss would be explained by an increase in the number of human errors committed, thus increasing the likelihood of being involved in near miss. Moreover, we hypothesized that near miss will predict actual accidents. Outcomes of path analysis showed that cell phone-specific violations predicted accidents throughout their consecutive effects on human errors and near miss only in the subsample of men. These findings offer an explanation of how cell phone use contributes to increase the likelihood of getting involved in near miss and actual accidents. The current study builds a path model explaining how cell phone-specific violations lead to more near miss among motorcycle riders.

STUDY OF OILSEED MATERIAL RHEOLOGY DURING EXTRUSION PROCESSING

Определены параметры течения пластичной жидкости при экструзионной переработке масличных культур. В качестве экспериментального материала использовали мезгу, выходящую из жаровни и поступающую в экструдер. Вязкость измеряли на ротационном вискозиметре при избыточном гидростатическом давлении 981 Па. Высота слоя материала в измеряемой ячейке составила 38 мм. Скорость сдвига в процессе измерения варьировали от 1 до 10 рад/с. Проведены эксперименты по определению зависимости вязкости от масличности материала, напряжения и скорости сдвига, а также гидравлического давления на исследуемый материал. Анализ результатов эксперимента свидетельствует о наличии структурообразования материала, поступающего в экструдер. Полученные параметры инженерной модели позволяют прогнозировать реологию вязкопластичного течения в широком диапазоне скоростей сдвига в каналах шнекового пресса. The parameters of the flow of plastic liquid during the extrusive processing of oilseed material are defined. The pulp coming from the brazier and into an extruder was used as experimental material. The viscosity was measured with rotational viscometer under excessive hydrostatic pressure of 981 PA. The height of the layer of material in the measuring cell was 38 mm. Shear rate during the measurement ranged from 1 to 10 rad/s. The experiments to determine the dependence of viscosity on oil content material, pressure, and velocity shear, and hydraulic pressure on the oilseed material were carrying out. Analysis of the results of the experiment indicates the presence of structure formation of the material coming into the extruder.

Changes in the immitance spectra of the cement paste in the initial period of hardening

The paper analyzes changes in the impedance and admittance spectra of the cement slurry during hardening. The spectra were measured in the frequency range from 20 Hz to 2 MHz on a precision RLC meter Agilent E4890A using a homemade capacitor measuring cell. The studies in order to establish the optimal equivalent electrical circuits describing the transformation of the electrophysical properties of the cement slurry and interface phenomena in the near-electrode layer of the measuring cell from the time of hardening were carried out. The sensitivity of the parameters of equivalent circuits to different stages of cement slurry hardening has been established.

Environmentally dependent and independent control of cell shape determination by Rho GTPase regulators in melanoma

In order to invade 3D tissues, cancer cells dynamically change cell morphology in response to geometric and mechanical cues in the environment. But how cells determine their shape in 3D versus 2D environments is poorly understood. Studying 2D versus 3D single cell shape determination has historically been technically difficult due to the lack of methodologies to directly compare the two environments. We developed an approach to study cell shape in 2D versus 3D by measuring cell shape at different depths in collagen using stage-scanning oblique plane microscopy (ssOPM). We find characteristic shape changes occur in melanoma cells depending on whether a cell is attached to a 2D surface or 3D environment, and that these changes can be modulated by Rho GTPase regulatory proteins. Our data suggest that regulation of cell protrusivity undergoes a switch of control between different Rho GTPase regulators depending on the physical microenvironment.

Influences on the excitation behavior of lightweight planetary gearboxes

One of the main cost drivers in mechanical engineering is material. In order to reduce costs, but also to reduce CO2 emissions in mobile applications, increasing efforts are being made to reduce the mass of components. In gear development, power density as the ratio of transmittable power to gear weight has become one of the key quality criteria. However, saving material usually also leads to lower stiffness of the components. In combination with higher specific powers and the associated higher forces, higher deformations and displacements occur in the gear unit. The gear unit is more elastic overall.Within this paper a measuring cell is presented which allows to measure the influence of elastic deformations and additional misalignments on the excitation behavior. By means of this measuring cell, the influence of certain misalignments and different ring gear rim thicknesses are investigated. The results show modulated excitations and sidebands which are excited depending on the misalignment.

Silent Information Regulating Factor 2 Related Enzyme 1 Regulates the Formation of Osteoblasts and Osteoclasts Through the AKT/β-Catenin Pathway

Bone remodeling participates in osteoporosis (OP). Silent information regulating factor 2 related enzyme 1 (sirtuin1, SIRT1) regulates cell survival, differentiation, metabolism and inflammation. However, the regulatory effect of SIRT1 on the formation of osteoblasts and osteoclasts has not been reported. OP and normal rat BMSCs were assigned into control group, OP group, and SIRT1 group (Resveratrol) followed by measuring cell proliferation by MTT assay, ALP activity, expression of SIRT1, RUNX2 and OP by Real time PCR, AKT/β-catenin signaling protein expression by Western blot. Rat BMSCs were cultured and treated with RANKL to induce osteoclast culture in the presence or absence of Resveratrol followed by analysis of cell proliferation and c-Fos and TRAP expression. SIRT1 expression and secretion in BMSCs cells and supernatant of OP group were significantly reduced and cell proliferation was significantly inhibited along with reduced RUNX2 and OP expression, ALP activity as well as decreased AKT/β-catenin phosphorylation compared to control group (P < 0.05); addition of Resveratrol can significantly reverse the above changes (P <0.05). Resveratrol can significantly promote SIRT1 expression, inhibit osteoclast proliferation, and reduce c-Fos and TRAP expression (P < 0.05). SIRT1 expression is reduced in osteoporosis and its upregulation promotes osteogenesis through AKT/β-catenin pathway, inhibits osteoclast formation, and improves osteoporosis.