Parameters Development for Optimum Deposition Rate in Laser DMD of Stainless Steel EN X3CrNiMo13-4

Laser Direct Metal Deposition (DMD) has been developed as a manufacturing process to deposit coatings on existing materials and proves advantageous in Additive Manufacturing (AM) of complex and precise components. However, it is necessary to carefully determine the proper process parameter combinations to make this method economically viable for industries. The intent of this study is to address enhancement in productivity of laser DMD of stainless steel EN X3CrNiMo13-4. Accordingly, the effects of the main laser process parameters of laser power P, scan speed v, powder flow rate $$\dot{\mathrm{m}}$$ m ˙ , and spot diameter s on track geometries and build-up rate are discussed. The regression analysis is conducted to derive correlations between the combined set of main parameters and deposition rate. The results show a good linear regression correlation of R2 >0.9 for the geometrical characteristic of aspect ratio, dilution, and deposition rate. The constructed processing map, using linear regression equations, presents proper process parameters selection in connection with deposition rate, aspect ratio, and dilution rate.

Effect of Boiling on Carotenoids content of Pumpkin available in Damascus, Syria

The carotenoids contents of pumpkin were determined in this study by spectrophotometric method. This method was applied on beta-carotene as standard solution as well as samples. The absorption were determined at λmax 454 nm, the analytical method was validated by evaluating linearity, precision, accuracy, LODs, and LOQs of the analyts. Beer’s law is obeyed over the concentration of (0.3-9) µg/ml with a linear regression correlation coefficient of 0.9986, and recovery in range from 98.5-102.2%. After the validation was performed using standard solution, the method then was applied on samples of pumpkin available in local market in Syria after extraction the carotenoids by using Acetone/ Dichloromethane 70/30 .The results ranged between 216.46 - 80.56 µg/g. During boiling for pumpkin, the level of carotenoid reduced between 0.45-13.26 %, 0.18 – 23.07%, 17.3-40.54%, 22.65-51.73%, 14.91_55.82% and 26.16 – 72.56%, for 5, 10, 15, 30, 45 and 60 min respectively. According to the obtained result results, it is concluded that the boiling reduced carotenoid at different rates.

UV Spectrophotometric Method Development and Validation of Lignocaine Hydrochloride in Bulk and Semisolid Dosage Form

Objective: A new, simple, sensitive, precise and reproducible UV spectroscopic method was developed for the estimation of Lignocaine Hydrochloride in bulk and Semisolid Formulation. Methods: The UV spectrum of Lignocaine Hydrochloride in RO water showed λ max at 228.8nm. Beer’s law is valid in the concentration range of 20-100µg/ml. This method was validated for linearity, accuracy, precision, ruggedness and robustness. Results: The method has demonstrated excellent linearity over the range of 20-100µg/ml with regression equation y = 0.0097x + 0.023 and regression correlation coefficient r2= 0.9992. Moreover, the method was found to be highly sensitive with LOD (3.55μg/ml) and LOQ (10.75μg/ml). Conclusion: Depending on results the given method can be successfully applied for assay of Lignocaine Hydrochloride in Semisolid formulation.

PENGARUH FASILITAS DAN LOKASI TERHADAP MINAT BERKUNJUNG PADA WATER BOOM AREMA RAYA KOTA BIMA

Diterima:Revisi:Terbit: Satisfying consumer needs is the dream of every company. Apart from being an important factor for the company's survival, meeting consumer needs can increase its superiority in competition. Consumers who are satisfied with the facility and location tend to buy back the product and reuse the product when the same needs reappear at a later date. This study aims to determine the effect of facilities and location on the interest in visiting the water boom arema raya bima city. This study uses a quantitative approach with a survey method, while this type of research includes associative research. The population in this study were consumers who had visited the Araema Raya water boom, the number of samples taken in this study were 100 respondents. The sample used in this study was purposive sampling. The research instrument used a questionnaire with a Likert scale. Data analysis used multiple linear regression, correlation test, determination test, partial test analysis with t test and f test (simultaneous). To test the effect between variables using SPSS (Statistical Service Product Solutions) version 26.00. The results of the study based on the t test (partial) show that there is no effect of facilities on interest in visiting, location has an effect on interest in visiting, while facilities and location jointly affect interest in visiting.Â

Pengaruh Partisipasi Anggaran Terhadap Kinerja Manajerial Dengan Komitmen Organisasi Dan Motivasi Kerja Sebagai Variabel Moderasi

This research intention to determine the effect of budget participation on managerial performance with organizational commitment and work motivation as moderating variables. The sample of this study were employees at managerial level (top and bottom). Researchers distributed 100 questionnaires spread to several manufacturing companies. Of the 100 questionnaires, 56 questionnaires were collected and 45 questionnaires were processed. The data collected were processed using the Multiple Liner Regression Correlation Test and Moderated Regression Analysis (MRA). Before testing the hypothesis, the researcher tested the validity, reliability, and classical assumption. The results showed that budget participation has a positive effect on managerial performance, even so when budget participation has a positive effect on managerial performance when moderated by organizational commitment and work motivation

Competency of Neural Networks for the Numerical Treatment of Nonlinear Host-Vector-Predator Model

The aim of this work is to introduce a stochastic solver based on the Levenberg-Marquardt backpropagation neural networks (LMBNNs) for the nonlinear host-vector-predator model. The nonlinear host-vector-predator model is dependent upon five classes, susceptible/infected populations of host plant, susceptible/infected vectors population, and population of predator. The numerical performances through the LMBNN solver are observed for three different types of the nonlinear host-vector-predator model using the authentication, testing, sample data, and training. The proportions of these data are chosen as a larger part, i.e., 80% for training and 10% for validation and testing, respectively. The nonlinear host-vector-predator model is numerically treated through the LMBNNs, and comparative investigations have been performed using the reference solutions. The obtained results of the model are presented using the LMBNNs to reduce the mean square error (MSE). For the competence, exactness, consistency, and efficacy of the LMBNNs, the numerical results using the proportional measures through the MSE, error histograms (EHs), and regression/correlation are performed.

Analisis Pengaruh Arus Kas Operasi Terhadap Penjualan Pada PT. Borwita Citra Prima Cabang Bima

This study aims to determine the effect of operating cash flow on sales at PT. Borwita Citra Prima Branch of Bima from 2015 to 2019. The type of data used is internal primary data in the form of financial report data at PT. Borwita Citra Prima. The sampling technique used purposive sampling for 5 years from 2015 to 2019. The data analysis technique used was simple linear regression, correlation coefficient, coefficient of determination and hypothesis testing (2-party t test ). The results of this study indicate that operating cash flow has no significant effect on sales, because the t value is smaller than the table t table (1.494 <3.182) with a significant value of 0.232 at PT. Borwita Citra Prima, Bima Branch. The magnitude of the effect of operating cash flow on sales is 42.7% and 57.3% is a component outside of research.

Development and Validation of UV Spectroscopy Method for the Estimation of Dolutegravir in Bulk and Pharmaceutical Dosage Form

UV spectroscopic method was developed for the estimation of Dolutegravir in bulk and Formulation.The UV spectrum of Dolutegravir in methanol and water mixture showed λ max at 254nm. Beer’s law is valid in the concentration range of 10-50µg/ml. This method was validated for linearity, accuracy, precision, LOD and LOQ. The method has demonstrated excellent linearity over the range of 10-50µg/ml with regression equation y = 0.030x + 0.008 and regression correlation coefficient r2= 0.998. Moreover, the method was found to be highly sensitive with LOD (2.056μg/ml) and LOQ (6.230μg/ml). Depending on results the given method can be successfully applied for assay of Dolutegravir in formulation.

Vo2Max and Agility to Futsal Dribbling Technique Skills

This study aims to determine the effect of VO2max and agility on basic futsal technical skills. This study is a regression correlation study on how much influence the VO2max variable and the agility variable have on dribbling skills. The study population was the students who took futsal extracurricular activities at SMP Negeri 9 Malang. The samples were taken by random sampling. The number of samples used was 35 students who took futsal extracurricular activities. The results of this research partially indicate that there is a negative and significant effect (p> 0.05) of VO2max on ball dribbling skills as indicated by the t test results of -8.969 with a regression coefficient of -0.135, and agility towards ball dribbling skills is shown from the t test results of 2,416 with a regression coefficient of 2,333. There is a significant effect (p <0.05) of agility on ball dribbling skills as indicated by the t test results of 2.416 with a regression coefficient of 0.106. Meanwhile, simultaneously (simultaneously) on the ball dribbling skills a significant effect is shown by the F value of 51.477. Based on the results of data analysis in research on VO2max and agility towards ball dribbling skills, it can be concluded that collectively (simultaneously) there is a significant effect on the level of cardiovascular endurance (VO2Max) and Agility on the dribbling skills of futsal extracurricular members of SMP Negeri 9 Malang.

Repair and Maintenance Cost Estimation for Two Power Sizes of Agricultural Tractors as Affected by Hours of Use and Age in Years: A Case Study, Dongola Area, Sudan

Repair and maintenance cost is considered as one of important items for machinery management and selection especially agricultural tractors. The present study was carried out in Dongola area for tractor repair and maintenance costs estimation. The data was collected from records of Elshimalya Company for Agricultural services. Forty-four tractors representing two powers sizes, 75hp and 150hp used in the area were selected for this study. Based on the data collected, regression correlation analysis was carried out and mathematical models were derived to predict the accumulated repair and maintenance (R and M) costs as percent of purchase price in relation to accumulated hours of use and age (years) for each tractor size, and for the two sizes collectively. Five model forms (linear, logarithmic, polynomial, power and exponential) were derived and the power function was found the best fit to explain the relation. The accumulated Rand M costs as percent of purchase price (Y) was increased as the accumulated hours of use (x) and age (g) of the tractor in years were increased. A high correlation was found between the accumulated R and M cost and both accumulated hours of use and tractor age in years (Average R2 = 0.93). It was concluded that the power function was the best fit for repair and maintenance cost estimations and this relation may be used as an average of the two tractor powers, for estimation of the accumulated R and M costs as percent of purchase price (Y) with accumulated hours of use (x) and age (g): Y=0.028x0.662 (mean) Y=12.294g1.276 (mean).