Effects Of Different Fields Research Articles

Effects of Different Fields of View and Rotation Angles on Radiation Doses to Highly Radiosensitive Organs in Children Using Dental Cone Beam Computed Tomography

Dental cone beam computed tomography (CBCT) is a diverse 3D X-ray imaging technique that has enabled clear visualization of the teeth and surrounding structures. The most common diagnostic purpose of dental CBCT examination in children is ectopic eruption and impacted teeth, and a small field of view (FOV) is often used. Since it is difficult for children to control their body movements, reducing the rotation angle is effective. However, no studies have examined the effects of different rotation angles on radiation doses to highly radiosensitive organs in children using small FOVs. The purpose of this study was to examine the effects of small FOVs (4 × 4 cm and 6 × 6 cm) and rotation angles (360° and 180°) on doses that highly sensitize organs in children using dental CBCT. The entrance surface doses to lenses, thyroid lobes, parotid glands, and sublingual glands of a pediatric whole-body phantom were measured. By reducing the FOV from 6 × 6 cm to 4 × 4 cm, the dose to the sublingual gland could be significantly decreased. Additionally, by reducing the rotation angle from 360° to 180°, the lens dose can be decreased significantly. As the rate of dose reduction varies among organs, it is important to consider the relative positions of different organs with respect to the FOV and the trajectory of the X-ray tube.

Effect of Different Anticoagulant Agents on Immune-Related Genes in Leukocytes Isolated from the Whole-Blood of Holstein Cows

Anticoagulants, such as ethylenediaminetetraacetic acid (EDTA), sodium citrate (Na-citrate), or heparin are normally used in hematological clinical tests to prevent coagulation. Although anticoagulants are fundamental for the correct application of clinical tests, they produce adverse effects in different fields, such as those involving specific molecular techniques; for instance, quantitative real time polymerase chain reactions (qPCR) and gene expression evaluation. For this reason, the aim of this study was to evaluate the expression of 14 genes in leukocytes that were isolated from the blood of Holstein cows, and which were collected in Li-heparin, K-EDTA, or Na-citrate tubes; then, they were analyzed using qPCR. Only the SDHA gene showed a significant dependence (p ≤ 0.05) on the anticoagulant that was used with the lowest expression; this was observed in Na-Citrate after being compared with Li-heparin and K-EDTA (p < 0.05). Although a variation in transcript abundance with the three anticoagulants was observed in almost all the investigated genes, the relative abundance levels were not statistically significant. In conclusion, the qPCR results were not influenced by the presence of the anticoagulant; thus, we had the opportunity to choose the test tube that was used in the experiment without interfering effects impacting the gene expression levels caused by the anticoagulant.

Desafios e riscos da Educação remota para crianças e adolescentes

Abstract Covid-19 has arisen deep changes in formal Education as a result of a sudden transition from in person to remote Education. Effects in different fields, such as mental health and socioeconomic vulnerability, also need follow up and evaluation. So, this paper aims to analyze the educational inequalities amplified by the pandemics, as well as the remote Education effects on students, educators and families. Its theoretical framework consisted of the reproduction theories and philosophical works on heterotopy, speed and the world and Education digitalization. The results show that previous achievements in schooling access, quality and equality took steps backwards. Mental health and student motivation have suffered negative effects. Digital Education does not seem to keep the same level of outcomes and equality. Therefore, remote Education has implied deep changes in schooling routines and ways of learning, some of them susceptible of negatively affecting students. Remote Education, despite its lower costs and prestigious halo, is to be used cautiously and with parsimony.

The Effect of Different Fields of Tertiary Education on Economic Growth

The Effect of Different Fields of Tertiary Education on Economic Growth

An Exact and Comparative Analysis of MHD Free Convection Flow of Water-Based Nanoparticles via CF Derivative

Convective flow is a self-sustained flow with the effect of the temperature gradient. The density is nonuniform due to the variation in temperature. The effect of the magnetic flux plays a major role in convective flow. The process of heat transfer is accompanied by a mass transfer process, for instance, condensation, evaporation, and chemical process. Combination of water as base fluid and three types of nanoparticles named as copper, titanium dioxide, and aluminum oxide is taken into account. Due to the applications of the heat and mass transfer combined effects in different fields, the main aim of this paper is to do a comprehensive analysis of heat and mass transfer of MHD natural convection flow of water-based nano-particles in the presence of ramped conditions with Caputo–Fabrizio fractional time derivative. The exact fractional solutions of temperature, concentration, and velocity have been investigated by means of integral transform. The classical calculus is assumed as the instant rate of change of the output when the input level changes. Therefore, it is not able to include the previous state of the system called the memory effect. But, in the fractional calculus (FC), the rate of change is affected by all points of the considered interval to incorporate the previous history/memory effects of any system. Due to this reason, we applied the modern definition of fractional derivative. Here, the order of the fractional derivatives will be treated as an index of memory. The influence of physical parameters and flow is analyzed graphically via computational software (MATHCAD-15). Our results suggest that the incremental value of the M is observed for a decrease in the velocity field, which reflects to control resistive force.

Heat and mass transport impact on MHD second‐grade fluid: A comparative analysis of fractional operators

AbstractThe effect of the magnetic flux plays a major role in convective flow. The process of heat transfer is accompanied by a mass transfer process; for instance, condensation, evaporation, and chemical process. Due to the applications of the heat and mass transfer combined effects in different fields, the main aim of this paper is to do a comprehensive analysis of heat and mass transfer of magnetohydrodynamic (MHD) unsteady second‐grade fluid in the presence of ramped conditions. The new governing equations of MHD second‐grade fluid have been fractionalized by means of singular and nonsingular differentiable operators. To have an accurate physical significance of imposed conditions on the geometry of second‐grade fluid, the constant concentration with ramped temperature and ramped velocity is considered. The fractional solutions of temperature, concentration, and velocity have been investigated by means of integral transform and inversion algorithm. The influence of physical parameters and flow is analyzed graphically via computational software (MATHCAD‐15). The velocity profile decreases by increasing the Prandtl number. The existence of a Prandtl number may reflect the control of the thickness and enlargement of the thermal effect.

ФОРМУВАННЯ КОНЦЕПЦІЇ КОРПОРАТИВНОЇ СОЦІАЛЬНОЇ ВІДПОВІДАЛЬНОСТІ ПІДПРИЄМСТВА

For the development of civilized social relations is important to develop a parity of interests of business, government and society. Important tools to build partnerships in solving pressing issues is the mechanism of social responsibility. It is theoretically proved and confirmed by the practice of the leading companies in the world that social responsibility can and should be seen as an important social resource that can generate specific benefits to the sustainability of development, to respond adequately to social challenges (both internal and external), turning the last of the restrictions on preferences. It should be emphasized that social responsibility seems to be an important social resource, regardless of what the concept of social responsibility has been implemented by the company. The latest theoretical and applied research in the field of corporate social responsibility convinced that activities of socially responsible business organizations demonstrates the uneven, differentiated the effects of different fields of corporate social responsibility on the performance of companies, their various benefits. For effective interaction of social partners, creating favourable conditions for sustainable social dynamics we should strive to ensure in practice equitable, communitarian, mutual social responsibility, which in the aggregate appropriate to be treated as consolidated. Consolidated responsibility is higher and more sustainable under conditions of, first, the most complete concurrence of interests of the social partners, and secondly, coherence and equal partners of their contribution to shared responsibility. For this approach to understanding the philosophy of social responsibility appears not only as individual responsibility of a separate entity, but as a joint, shared, consolidated responsibility of all participants of socio-labour relations.

Brassica green manure rotation crops reduce potato stem rot caused by Sclerotinia sclerotium

This study was conducted to evaluate the potential of biofumigation in three Brassica crops including Brassica napus, Brassica juncea and Brassica campestris against potato stem rot caused by Sclerotinia sclerotiorum in field tests. Results from field trials carried out in three naturally infected potato fields during three cropping seasons of 2008–2010 showed that the Brassica crops used as green manure cover crops were able to significantly reduce disease incidence and mean percentage of dead plants (as a proportion of infected plants). Although results varied somewhat by field site and year, B. juncea generally provided the highest level of control, averaging greater than 55.6 % reduction in disease incidence over all fields and years, compared to average disease reductions of 31.6 and 45.8 % for the B. napus and B. campestris crop treatments, respectively. Furthermore reduction of dead plants averaged 61.6, 39.2 and 32.1 % for B. juncea, B. napus, and B. campestris, respectively. In this study, Brassica crops showed various significant inhibitory effects in different fields and years indicating that disease development is affected by other factors including environmental conditions.

On the concept of normative evaluation of cost-effectiveness of GLONASS application in coastal regions

Russia promotes the application of GLONASS satellite information system in regional economies. In three regions, the system has already been introduced and is widely used, 21 more regions are introducing the system. Experts believe that this process will take from 3 to 5 years. The introduction and integrated use of GLONASS pose a number of organisational and economic problems for regional administrations. One of such problems is the evaluation of economic benefit from GLONASS implementation in the region. Economics has developed a large number of methodological approaches to the calculation of such effects in different fields of satellite information application: Earth's remote probing, crop yield forecasts, forestry, water industry and agricultural monitoring, etc. However, the research shows that attempts to perform a calculation for various fields of satellite information application at a regional level prove the existing approaches to be inefficient due to the difficulties in obtaining initial data. To this effect, the authors developed a normative methodical approach to the calculation of the effect of integrated GLONASS application. This approach is meant to fill the existing gap and makes it possible to evaluate the economic benefit of an integrated GLONASS application for different fields.

О концепции нормативной оценки экономической эффективности использования ГЛОНАСС в приморских регионах

Russia promotes the application of GLONASS satellite information in regional economies. In three regions, the system has been already introduced and is widely used, 21 more regions are implementing the system. Experts believe that this process will take from 3 to 5 years. The introduction and integrated use of GLONASS pose a number of organisational and economic problems for regional administrations. One of such problems is the evaluation of economic effect of GLONASS implementation in the region. Economics has developed a large number of methodological approaches to the calculation of such effects in different fields of satellite information application: Earths remote probing, crop yield forecasts, forestry, water industry and agricultural monitoring, etc. However, the research shows that the attempts to perform a calculation for various fields of satellite information application at regional level prove the existing approaches to be inefficient due to the difficulties in obtaining initial data. To this effect, the authors developed a normative methodical approach to calculation of the effect of integrated GLONASS application. This approach is meant to fill the existing gap and makes it possible to evaluate the economic effect of integrated GLONASS application for different fields.

The mediatization of the knowledge based economy: An Australian field based account

This paper presents an empirical account of mediatization from a Bourdieuian perspective, based on the development of a number of new concepts, such as cross-field effects and the rescaling of such effects as linked to processes of globalization. Built on an Australian empirical case relating to educational policy and the knowledge based economy, this paper argues that mediatization can be understood in relation to the cross-field effects of different fields of journalism on subsequent fields, which have their genesis in forms of practice that cross different social fields. Specifically, the case analysis details interactions between the field of print journalism and the field of policy over the course of an Australian science capability review, chaired by the then chief scientist, Dr Robin Batterham, which led to Australia adopting a national version of the knowledge economy. The empirical case also leads us to consider the impact of both global and national fields of journalism on fields of educational policy in relation to mediatization.

Field of Study and University Graduates' Early Employment Outcomes in Italy during 1995–2004

Abstract. In a period of expanding higher education, the field of study becomes a key determinant of university graduates' labour market success. In this paper, by means of multivariate analyses of the quality of graduates' early employment outcomes, we first describe how the effect of different fields of study on the university‐to‐work transition changed between 1995 and 2004 in Italy. Second, we put forward some alternative hypotheses to interpret the changes observed over time and assess which ones seem to be more consistent with the data.

Carbon nanotube tip melting with vacuum breakdown in cold cathode

Failure of patterned multiwalled carbon nanotubes during field emission (FE) was systematically studied at different fields using an indigenous FE setup. Here, the findings are reported from the experimental observation of the degradation of carbon nanotube (CNT) based field emitters over a silicon substrate. The CNTs were grown on the patterned silicon substrate using chemical vapor deposition (CVD) and plasma-enhanced CVD (PECVD) techniques. Scanning electron microscopy (SEM) was employed to observe the effect of different fields over CNTs. The observed current density of 28mA∕cm2 at a field of 5V∕μm from CNTs grown via CVD before giving a high-field treatment remained almost the same until the substrate started melting. Similar observations were made in CNTs grown via PECVD. SEM images clearly reveal that the high-field treatment resulted in melting of silicon substrate at a certain point; at some other points, etching of silicon substrate was also observed. The authors attribute these observations to arcing because the base vacuum was not sufficiently adequate for the applied field. Due to arcing, the localized temperature became so high that the substrate started to melt. The SEM images give an insight into understanding the degradation mechanism of CNT-based field emitters.