scholarly journals Thermally Stimulated Depolarisation Studies of Methyl Acrylic Acid (MAA) Doped Ethyl Cellulose (EC)

2021 ◽  
pp. 373-380
Author(s):  
Devendra K Sahu ◽  
Keshav Dev ◽  
Vikram S Yadav
Keyword(s):  
Acrylic Acid ◽  
Ethyl Cellulose ◽  
Sampling Technique ◽  
Polymer Chains ◽  
Heating Rates ◽  
Positive Direction ◽  
Second Order Transition ◽  
Thermal Techniques ◽  
Storage Times ◽  
And Storage

Thermally stimulated depolarisation current (TSDC) of polarised samples of methyl acrylic acid (MAA) doped ethyl cellulose (EC) films of about 25 µm thickness has been recorded as a function of temperature, electric field, heating rates and storage times. Two current maxima in positive direction and found around 60 and 110oC for doped sample with ethyl cellulose. FTIR of doped EC are represented the different phenomena of TSDC. Thermal sampling technique showed that the relaxation is distributed. Differentia thermal analysis gave a second-order transition at bout 345K because of good correlation between both thermal techniques it is concluded that the TSD peak is associated with glass transition of the polymer, and therefore it involves the motion of large parts of the polymer chains.

Pengaruh keputusan investasi, keputusan pendanaan, dan kebijakan dividen terhadap nilai perusahaan yang terdaftar di Bursa Efek Indonesia

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Dina Patrisia ◽  
Muthia Roza Linda ◽  
Ursa Yulianti
Keyword(s):  
Dividend Policy ◽  
Stock Exchange ◽  
Investment Decision ◽  
Investment Decisions ◽  
Secondary Data ◽  
Sampling Technique ◽  
Total Sample ◽  
Manufacturing Companies ◽  
Positive Direction ◽  
Company Value

This study aims to analyze the effect of investment decisions, funding decisions, and dividend policy on the value of the company. This research is classified as causative research. The populations in this study are all Manufacturing companies listed on the Stock Exchange in 2012-2016. The sampling technique in this study is using purposive sampling technique with a total sample of 213 samples. The data used is secondary data. The data analysis method used is multiple regression. The results showed that investment decision variables affect the value of the company in a positive direction, funding decisions affect the value of the company in a negative direction, and dividend policy affects the value of the company with a positive direction on Manufacturing companies listed on the IDX. With this research, it is expected that researchers who can further conduct research related to factors that influence the value of the company whose impact is higher than what researchers have met. By using different proxy and data processing methods to produce more accurate data processingKeywords: Investment decisions; funding decisions; dividend policy; company value

KORELASI ANTARA KOMUNIKASI INTERPERSONAL DAN KECERDASAN EMOSI DENGAN MOTIVASI BERPRESTASI PADA SISWA KOMUNITAS HOME SCHOOLING BERKEMAS

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Wina Lova Riza
Keyword(s):  
Emotional Intelligence ◽  
Data Analysis ◽  
Correlation Coefficient ◽  
Interpersonal Communication ◽  
Achievement Motivation ◽  
Home Schooling ◽  
Sampling Technique ◽  
Positive Direction ◽  
Research Results ◽  
Multivariate Correlation

The purpose of this study was to determine the correlation between interpersonal communication and emotional intelligence with achievement motivation in packaged home schooling community students. The population in this study were 50 packaged home schooling community students, where the sampling technique was saturated sampling (census), because the population was the same as the sample. Based on the results of data analysis using multivariate correlation with the help of SPSS 15.0, research results obtained with a correlation coefficient of 0.657 with p <0.05, then H0 which states there is no correlation between interpersonal communication and emotional intelligence is rejected, while Ha which states there is a correlation between Interpersonal communication and emotional intelligence are accepted. Based on the description above it can be concluded that there is a significant correlation with the positive direction between interpersonal communication and emotional intelligence with achievement motivation in packaged home schooling community students. So, the better interpersonal communication and the higher the emotional intelligence will be followed by the higher achievement motivation Keywords: Interpersonal Communication, Emotional Inteligence, Achievemnet Motivation.   Tujuan penelitian ini adalah untuk mengetahui korelasi antara komunikasi interpersonal dan kecerdasan emosi dengan motivasi berprestasi pada siswa komunitas home schooling Berkemas. Populasi pada penelitian ini siswa komunitas home schooling berkemas yang berjumlah 50 orang, dimana tehnik pengambilan sampel adalah sampling jenuh (sensus), karena populasi sama dengan sampel. Berdasarkan hasil analisis data dengan menggunakan multivariate correlation dengan bantuan program SPSS 15.0 diperoleh hasil penelitian dengan koefisien korelasi sebesar 0,657 dengan p<0,05, maka H0 yang menyatakan tidak ada korelasi antara komunikasi interpersonal dan kecerdasan emosi ditolak, sedangkan Ha yang menyatakan ada korelasi antara komunikasi interpersonal dan kecerdasan emosi diterima. Berdasarkan uraian diatas dapat ditarik kesimpulan bahwa ada korelasi yang signifikan dengan arah positf antara komunikasi interpersonal dan kecerdasan emosi dengan motivasi berprestasi pada siswa komunitas home schooling Berkemas. Jadi, semakin baik komunikasi intepersonal dan semakin tinggi kecerdasan emosi akan diikuti dengan semakin tingginya motivasi berprestasi.   Kata Kunci: Komunikasi Interpersonal, Kecerdasan Emosional, Motivasi Berprestasi.

scholarly journals Use of Families of Euphorbiaceae for the Production of Biodiesel in Semiarid Areas

Proceedings ◽  
2021 ◽  
Vol 52 (1) ◽  
pp. 2
Author(s):  
Noé Anes García ◽  
Antonio Luis Marqués Sierra
Keyword(s):  
Fossil Fuels ◽  
Chemical Properties ◽  
Petroleum Products ◽  
Prolonged Storage ◽  
Physical Chemical ◽  
Semiarid Areas ◽  
Storage Times ◽  
And Storage ◽  
Improved Characteristics ◽  
Made In

In recent years, developments made to reduce the consequences generated using petroleum products have been strengthening; therefore, biofuels have become a requirement in different countries worldwide with the objective of reducing not only the high levels of current pollution, but also mitigating the effects generated by global warming. Despite the advances that have been made in the field of research on Jatropha, it is still necessary to carry out more detailed studies aimed at achieving a better use of it, identifying the influence of its physical–chemical properties in terms of quality levels, as well as determining its behavior when mixed with palm oil to achieve a biodiesel with better yields, whose impact will be reflected mainly in the environmental field, helping to mitigate the production of greenhouse gases that are produced by petroleum products. Although currently the biofuels sector has made important advances in research, it is necessary to deepen the physical–chemical analyses both in the production and storage processes of biodiesel, so that in the future it can be fully fulfilled with the energy requirements that are currently only achieved with fossil fuels, so it is necessary to direct this research toward the development of new products with improved characteristics, especially when exposed to prolonged storage times and low temperatures.

Immobilization of urease in poly(1-vinyl imidazole)/poly(acrylic acid) network

2010 ◽  
Vol 64 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Mehmet Şenel ◽  
Agah Coşkun ◽  
M. Fatih Abasıyanık ◽  
Ayhan Bozkurt
Keyword(s):  
Acrylic Acid ◽  
Enzyme Immobilization ◽  
Storage Stability ◽  
Polymer Network ◽  
Ft Ir ◽  
Basic Characteristics ◽  
And Storage ◽  
Menten Constant ◽  
Ft Ir Spectroscopy ◽  
Poly Acrylic Acid

AbstractIn this study, urease was immobilized in a polymer network obtained by complexation of poly(1-vinyl imidazole) (PVI) with poly(acrylic acid) (PAA). Preparation of the polymer network was monitored by FT-IR spectroscopy. Scanning electron microscopy (SEM) revealed that enzyme immobilization had a strong effect on film morphology. Proton conductivity of the PVI/PAA network was measured via impedance spectroscopy under humidified conditions. Values of the Michaelis-Menten constant (K M) for immobilized urease were higher than for the free enzyme, indicating a decreased affinity of the enzyme to its substrate. The basic characteristics (pHopt, pHstability, T opt, T stability, reusability, and storage stability) of immobilized urease were determined. The results show that the PAA/PVI polymer network is suitable for enzyme immobilization.

scholarly journals Examining the Mediation of Job Satisfaction in the Relationship between Work Stress and Turnover Intention in Textile Company

2020 ◽  
Vol 5 (2) ◽  
pp. 113-121
Author(s):  
Romat Saragih ◽  
Arif Partono Prasetio ◽  
Bachruddin Saleh Luturlean
Keyword(s):  
Job Satisfaction ◽  
Work Stress ◽  
Turnover Intention ◽  
Sampling Method ◽  
Sampling Technique ◽  
Jel Classification ◽  
Positive Direction ◽  
Negative Effect ◽  
The Relationship

Objective – This study investigates the mediation role of job satisfaction in the relationship between work stress and turnover intention. A study about turnover intention in the textile company is still rarely done in Indonesia. This study can fill the gap regarding the topic. Methodology/Technique – A nonprobability sampling method with an accidental sampling technique was used, and we get 110 usable responses from a textile company in West Java, Indonesia. Macro Process with SPSS was used to measure the regression and the mediation. Findings – The study found that work stress has a negative effect on job satisfaction. Work stress significantly related to turnover intention in a positive direction. Job satisfaction did not have a significant relation with turnover intention. Thus, in this study, we found no mediation role in job satisfaction. Novelty – Evidently, work stress solely took part in shaping the turnover intention. Type of Paper: Empirical. Keywords: Work stress, Job satisfaction, Turnover intention, Textile Company, Mediation Reference to this paper should be made as follows: Saragih, R; Prasetio, A.P; Luturlean, B.S. 2020. Examining the Mediation of Job Satisfaction in the Relationship between Work Stress and Turnover Intention in Textile Company, J. Mgt. Mkt. Review 5(2) 113 – 121. https://doi.org/10.35609/jmmr.2020.5.2(4) JEL Classification: J28, J29, M19.

scholarly journals The Effect of Hydrothermal Treatment on Metabolite Composition of Hass Avocados Stored in a Controlled Atmosphere

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2427
Author(s):  
Rosana Chirinos ◽  
David Campos ◽  
Sofía Martínez ◽  
Sílfida Llanos ◽  
Indira Betalleluz-Pallardel ◽  
...  
Keyword(s):  
Hydrothermal Treatment ◽  
Nutritional Value ◽  
Syringic Acid ◽  
Controlled Atmosphere ◽  
Coumaric Acid ◽  
Primary And Secondary Metabolites ◽  
Avocado Fruit ◽  
Lipophilic Antioxidant ◽  
Storage Times ◽  
And Storage

Avocado cv. Hass consumption has expanded worldwide given its nutritional, sensory, and functional attributes. In this work, avocado fruit from two harvests was subjected to hydrothermal treatment (38 °C for 1 h) or left untreated (control) and then stored for 30 and 50 days in a controlled atmosphere (4 kPa O2 and 6 kPa CO2 at 7 °C) (HTCA and CA, respectively) with subsequent ripening at ~20 °C. The fruit was evaluated for primary and secondary metabolites at harvest, after storage, and after reaching edible ripeness. A decrease from harvest to edible ripeness in mannoheptulose and perseitol was observed while β-sitosterol, hydrophilic and lipophilic antioxidant activity (H-AOX, L-AOX), abscisic acid, and total phenolics (composed of p-coumaric and caffeic acids such as aglycones or their derivatives) increased. HTCA fruit at edible ripeness displayed higher contents of mannoheptulose, perseitol, β-sitosterol, L-AOX, caffeic acid, and p-coumaric acid derivatives, while CA fruit presented higher contents of α-tocopherol, H-AOX, and syringic acid glycoside for both harvests and storage times. The results indicate that a hydrothermal treatment prior to CA enables fruit of high nutritional value characterized by enhanced content of phenolic compounds at edible ripeness to reach distant markets.

scholarly journals Karakteristik Fisikokimia dan Aktifitas Antioksidan Daging Itik yang Dilapisi Ekstrak Propolis Selama Penyimpanan Suhu Ruang

2021 ◽  
Vol 9 (3) ◽  
pp. 151-157
Author(s):  
A. Apriantini ◽  
S. Adinata ◽  
Y. C. Endrawati
Keyword(s):  
Shelf Life ◽  
Storage Time ◽  
Ph Value ◽  
Edible Coating ◽  
Cooking Loss ◽  
Propolis Extract ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Storage Times ◽  
And Storage

Duck meat is a perishable food that has a short shelf-life. Therefore, packaging is needed to be used tomaintain duck meat quality during storage, one of the ways to extend shelf-life of duck meat is usingpropolis extract as edible coating which is contained antioxidant substances which can be used to extendduring storage. The aim of this research was to analyze the effect of propolis extract as an edible coatingmaterial on duck meat to maintain the quality and extend shelf-life of duck meat at room temperature.The research was used a completely randomized design (CRD) factorial 4x3 with 3 replications,consisting of 4 propolis concentrations (0.0%, 0.5%, 1.0%, 1.5%) and 3 storage times (0 hours, 6 hoursand 24 hours). Duck meats coated with propolis extracts had a significant effect on the water content andantioxidant activity of duck meat (P < 0.05). The storage time had a significant effect on the pH valueand the cooking loss of duck meat (P <0.05). The addition of propolis extract and storage time had asignificant effect on the pH value, cooking loss and antioxidant activity of duck meat (P <0.05).

scholarly journals ADAPTASI MODEL DELONE DAN MCLEAN YANG DIMODIFIKASI GUNA MENGUJI KEBERHASILAN IMPLEMENTASI APLIKASI OPERASIONAL BAITUL MAAL WAT TAMWIL (BMT) BAGI INDIVIDU PENGGUNA (Studi Empiris Pada BMT di Kota Semarang)

2016 ◽  
Vol 4 (2) ◽  
pp. 123
Author(s):  
Novita Anugrah Listiyana ◽  
Dedi Rusdi
Keyword(s):  
Path Analysis ◽  
User Satisfaction ◽  
Sampling Technique ◽  
Individual Performance ◽  
Quality System ◽  
Quality Of Information ◽  
Positive Direction ◽  
The Individual ◽  
The Impact

This study analyzed the relationship between humans as users of the system and application software as object an inseparable relationship. The purpose of this study was to analyze the effect of variable quality system to the perception of the quality system, the effect of perceived quality system and quality of information on the intensity of use and user satisfaction, and the influence of the intensity of use and user satisfaction of the impact of individual performance. This research is an empirical study using purposive sampling technique in data collection. Data were collected through  questionnaires to 39 BMT’s operational employees. Then, performed an analysis of the data obtained used path analysis. This included: testing hypotheses through path analysis. The results of tests performed using path analysis to get the results that each variable in the model of equation 4 had a coefficient with a positive direction. This means that the improvement of the quality of the system will be able to improve the quality of information for the individual impact of the use and satisfaction of employees through the use of the system.

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