American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS)
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The Impact of Stress on the Functions of the Dento-Maxillary Apparatus
Get PDFStress is a complex psychosocial phenomenon that occurs as a result of having to cope with requirements, tasks, situations perceived as difficult, painful or of great importance. The aim of the study was to assess stress in a young population from Cluj-Napoca and establish a correlation between stress and its impact on the oral cavity. The study was observational, analytical, cohort, and retrospective. It involved 105 young students of both sexes (17 males, 88 females) between 21 and 42 years of age. The average age of the subjects was 24.32 years. The study found a strong association between increased levels of stress and the occurence of xerostomia, muscle pain in the masticatory muscles, sleep and awake bruxism
Use of Plant Regulators in the Off-Season Flower Induction of ‘Tahiti’ Acid Lime and ‘Ponkan’ Mandarin
Get PDFBrazil is one of the world’s largest citrus producers. To maintain the uniformity of annual production during seasonality, there is a need to apply new technologies in agriculture to enhance plant productivity. Applications of plant regulators in fruit trees are part of methods to standardize production. Thus, the aim of this study was to evaluate the use of plant growth regulators Paclobutrazol (PBZ) and Ethephon, associated with potassium sulfate and calcium nitrate foliar fertilizers, in the off-season flower induction in ‘Tahiti’ acid lime and ‘Ponkan’ mandarin crops, for off-season production. The experiment was carried out in properties located in the municipality of Aparecida do Taboado/MS, with randomized blocks design, containing 2 treatments (without/with application of plant growth regulators), 4 blocks with 50 replicates, with each plant evaluated being considered an experimental unit. At 150 days after the application of products, number of flowers per square meter of plant canopy and fruit set in both crops were evaluated, in addition to their diameter. ‘Tahiti’ acid lime plants treated with PBZ obtained average of 77.24 fruits per m²/plant canopy, while controls had 16.08 fruits m²/plant canopy. In ‘Ponkan’ mandarin, treated plants obtained 87.49 fruits per m²/plant canopy, while controls had 30.94 fruits m²/ plant canopy. The execution schedule and products used as plant regulators, especially Paclobutrazol, applied to ‘Tahiti’ acid lime and ‘Ponkan’ mandarin plants allowed significant increase in the amounts of flowers and fruits, making it possible to plan the staggering of flowering induction and production of these cultivars
Simulating Low-Level Laser Propagation From Skin Surface to Lumbar Disc, Knee, Femur and Prostate Gland By Monte Carlo Method
Get PDFNowadays, the uses of laser and optics in the medical areas are extremely vivid, especially low-level laser therapy. The light with the wavelength of 633 nm to 1200 nm could penetrate and propagate deep in biological tissue. To develop the low-level laser therapy device, optimizing light delivery is critical to accurately stimulate the biological effects inside the biological tissue. Nevertheless, each form of the tissues at each zone on the body had various refractive optic, absorption, scattering, and anisotropy coefficients. This paper describes the simulation results of low-level laser propagation from skin surface at the lower spine, the knee, the femur and the prostate gland with four wavelengths (633 nm, 780 nm, 850 nm, and 940 nm) by the Monte Carlo method. These simulation results are the base for developing the low-level laser therapy device, that could be used in clinical for treating the fracture, knee osteoarthritis, spinal degeneration, and benign prostatic hypertrophy
Effect of Organic Solvents on the Synthesis and Characterization of Carboxymethyl Cellulose from Sawdust
Get PDFSawdust generated as waste by-product from timber industries finds limited industrial applications and is mostly discarded or incinerated, causing environmental problems. This research work was carried out with a view of utilizing sawdust to synthesize Carboxymethyl cellulose (CMC). Cellulose was isolated from sawdust of commercially used hardwood (Mahogany- Khaya ivorensis) and softwood (Silk cotton- Eriodendron orientale) by alkali-acid and bleaching treatments. Using ethanol, butanol, isobutanol and isopropanol as solvent media, the isolated cellulose samples were converted to CMC through mercerization with sodium hydroxide (NaOH) and etherification with sodium monochloroacetic acid (SMCA). The products obtained were characterized using Degree of Substitution (DS), Fourier Transform Infrared (FTIR) Spectroscopy and Thermogravimetric Analysis (TGA). Studies revealed that optimum DS of 0.54 could be reached when isopropanol is used as solvent medium. The presence of carboxyl and methyl functional group at wavenumber 1580-1590 and 1380-1415 cm-1 respectively on the FTIR spectra confirmed the conversion of cellulose to CMC. TGA showed that the thermal stability of CMC is lower than that of the parent cellulose. The results obtained demonstrate a simple method for the conversion of sawdust to a high quality water-soluble cellulose derivative which has applications in the food, textile, cosmetics and pharmaceutical industries
The Impact of E-commerce on Sierra Leone Tourism Industry
Get PDFThe importance of electronic commerce is felt and greatly emphasized in the present business field. Today, all the industries have started adopting e-commerce concepts, where tourism is probably the most affected industry by e-commerce. The E-tourism and its utility provide a lot of information on Sierra Leone destination, hotels, facilities, price and tariff, geographical features and climate. More number of companies integrated all the services on their websites and provides a complete package with a competitive price to the required customers. E-tourism companies in Sierra Leone also provide mobile application facilities to the consumers. E-tourism companies need to follow certain procedures laid down by the Government. The objectives of the study is to identify the level of impact of e-commerce technology on tourism industry in Sierra Leone and the opportunities and challenges. A systematic research methodology is adopted, data has been collected from the tour operators through questionnaire and suitable statistical tools were applied. With the help of the collected data a detailed analysis was made, understand the impact of e- Commerce on Sierra Leone tourism industry identify the opportunities and challenges as well as the market trend
Assessment of Relative Humidity Effect on Wind Power for Electricity Production in Al-Samawa City-Southern Iraq
Get PDFThe relative humidity influence on the percentage of loss in annual rates of wind power in Al-Samawa city- Southern Iraq have been assessmented for five years interval (2012-2016) for electricity production object. Data of relative humidity and wind speed, are measured at height of AL-Samawa meteorological Station (11 meters). This data utilized as input to a software computer program which was prepared for this study. The study declare the little reduction in the annual rate of power of moist air. It is noted that the least loss in value occurred at minimum height reached approximately 0.76% at study year 2014, whereas the largest loss at the minimum height reached nearly 0.9% at study year 2015, and the value of loss percentage reduces with height increases. This difference belongs to decrease in air density. The least percentage of air density in 2014 at minimum height reached 0.76% while the largest one reached 0.9% in 2015. Lowering in values of annual rates of density was noted as height increases.  
Challenges of Inland Container Depots in Nigeria
Get PDFThe concept of inland container depots (ICD) has been in existence for over 35 years to mitigate the major problem of port congestion in developed and developing countries due to the continuous increase in international business transactions through containers. As a result, most nations with Nigeria as a case study have faced serious challenges in implementing and operating inland container depots. This research summarizes the major challenges from literature review and findings from port stakeholders based on the current trend. A functional process framework and effective linkages from the ports to respective ICD with modern intermodal transport infrastructure are required for sustainable operation of ICD
Policies on Inclusive Education for Children with Disabilities in Vietnam
Get PDFThis article traces the history of inclusive education policy development, laws that have been promulgated, and the dissemination of policy and legal rights and responsibilities through conferences, seminars and university coursework in Vietnam since 1995 when the responsibility for educating children with disabilities shifted from the Ministry of Labor, Invalids and Social Affairs to the Ministry of Education and Training. Numerous standards of practice related to roles and responsibilities and recommendations for improvemtns in policy and practice are shared as well as lessons learned from external evaluation efforts that will be valuable for further development and refinement of poilicies to forward inclusive education in Vietnam
The Employee’s Performance: A Study of Construct Validity and Reliability
Get PDFThis study aims to test the validity and reliability of the employee performance scale and test aspects and indicators that can form an employee performance variable. Employee performance is measured by three aspects, namely work result, discipline, and responsibility. This study\u27s population were all employees who served in the operating room of Hospital "X" in Yogyakarta, and the number of samples in this study was 61 operating room employees at this Hospital. The sampling technique is done with simple random sampling. Data collection methods use an employee performance scale. The research data were analyzed with Structural Equation Modelling (SEM) through the SmartPLS 3.2.8 program. Based on the data analysis results, the aspects and indicators that make up the employee\u27s performance variables are declared valid and reliable. The most dominant aspect that reflects employee performance variables is discipline with loading factor 0.860, and the weakest aspect that reflects employee performance variables is the work result with a loading factor of 0.780. This shows that all aspects and indicators are able to reflect and shape employee performance variables. Thus, the measurement model can be accepted because the theory that describes employee performance variables fit with empirical data obtained from the subject
Agricultural Risks and Social Vulnerability in Rural Areas in The Commune of Houéyogbé in South-Benin
Get PDFThe present research aims at studying the social vulnerability of the agricultural risks in the Commune of Houéyogbé The methodological step used is articulated around the analysis and, their treatment data-gathering of the results. The data-gathering consisted of the information retrieval and of investigation of ground by using the individual talks and the method of x-ray group. The statistics heights of rains and the data hydrometric of the period 1981-2010 then the pedo-geomorphological and agricultural data of same period (SCDA Houéyogbé) made it possible to study the agricultural risks The data and information resulting from the information retrieval and the socio-anthropological investigations made it possible to apprehend the social vulnerability of the rural populations to the agricultural risks.¶The matrix of appreciation of the vulnerability made it possible to determine the current and future vulnerability rural communities (for example, the level of high impact and low capacity of adaptation give the high level of vulnerability).¶With the latter, the strategies of mitigation locally installation are added (early harvest, temporary migration towards the no flooded grounds, etc).¶Moreover, the data and information relating to the agricultural risk management collected with the seat of the specialized organizations such as the ANPC and Caritas-Benign made it possible to propose suitable mechanisms of management.