scholarly journals Impact of Stocking Density as the Growth and Biomass Production of Hybrid Tilapia (Red Strain) in Cages

2021 ◽  
pp. 114-123
Author(s):  
Alish Debbarma ◽  
Stephen Sampath Kumar ◽  
J. V. Senthil Kumar ◽  
Anupam Tripura
Keyword(s):  
Biomass Production ◽  
Tamil Nadu ◽  
Growth Parameters ◽  
Stocking Density ◽  
Culture Period ◽  
Sustainable Aquaculture ◽  
Negative Effect ◽  
Positive Effect

The study was conducted to evaluate the effect of stocking density influencing the growth of Hybrid Tilapia (Red strain) in cages for culture period of 120 days. The experiment is conducted in Thanjavur Center for sustainable Aquaculture, Sorrokottai, Tamil Nadu, India. Hybrid Tilapia fingerling ABW of (3.3+0.01 g) were stocked at 20/m3 (T1), 30/m3 (T2) and 40/m3 (T3) and fed 3 times daily (9:00, 12:00 and 17:00 H) with a commercial food 40% protein gradually reduce to 35 to 30% protein and stock was sampled fortnight. Among three stocking densities, 20 fish/m3 was found to be the best for the growth in cages, while the FCR and net biomass production were found higher in high stocking densities fishes (30, 40 fish/m3). The best FCR was 1.08 +0.06 from T1 (20 fish/m3) with 92.5+0.04% of FCE. The highest net biomass production was 19 kg (3.16 kg/m3) from T2 (30 fish/m3). Present study reveal that stocking density has negative effect on bio-growth parameters but biomass production has positive effect with stocking density.

scholarly journals Caracterización estomática, concentración de clorofila y su relación con producción de biomasa en Bouteloua curtipendula

2018 ◽  
Vol 29 (2) ◽  
pp. 251
Author(s):  
Alan Álvarez-Holguín ◽  
Carlos Raúl Morales-Nieto ◽  
Raúl Corrales-Lerma ◽  
Carlos Hugo Avendaño-Arrazate ◽  
Héctor Oswaldo Rubio-Arias ◽  
...  
Keyword(s):  
Biomass Production ◽  
Concentration Index ◽  
Stomatal Density ◽  
Chlorophyll Concentration ◽  
Stomatal Index ◽  
Bouteloua Curtipendula ◽  
Negative Effect ◽  
Animal Sciences ◽  
Positive Effect ◽  
Genotype E

The stomatal characteristics and chlorophyll concentration are some of the main parameters, to determine plant productivity. The objective of the present study was to characterize the stomatal density and distribution to estimate the chlorophyll concentration and evaluate their effect on the biomass production of sideoatsgrama[Bouteloua curtipendula (Michx.) Torr.] genotypes. The experiment was performed from May to July 2015 under greenhouse conditions, at- the School of Animal Sciences and Ecology of the Autonomous University of Chihuahua, Mexico. Three commercial varieties were studied: El Reno, Niner, Vaughn and two native genotypes: E-689 and E-592 of side-oats grama. The variables evaluated were chlorophyll concentration index (CCI), stomatal density (SD), trichome density (TD), stomatal index (SI), and stomatal area (SA). These variables were related to biomass production (BP) applying regression analysis. SD and SI showed a negative effect on BP, while SA and CCI showed a positive effect. The genotype E-689 showed the lowest (p<0.05) SD and SI, with values from 152.7 to 275 stomatal/μm2 and from 13.41 to 16.03%, respectively. In addition, it also presented the highest (p<0.05) SA and BP, with values from 186.7 to 361.7 μm2 and 13.5 to 30.3 g, respectively. In conclusion, genotypes of side-oats grama with lower stomatal density and stomatal index and higher stomatal area and chlorophyll concentration index could produce higher amounts of biomass.

Working Memory, Mental Prospection, Time Orientation, and Cognitive Insight

2013 ◽  
Vol 34 (3) ◽  
pp. 159-169 ◽  
Author(s):  
Sevtap Cinan ◽  
Aslı Doğan
Keyword(s):  
Working Memory ◽  
Structural Equation ◽  
Factor Model ◽  
Time Orientation ◽  
Equation Modeling ◽  
Cognitive Insight ◽  
Confirmatory Factor ◽  
Negative Effect ◽  
Positive Effect ◽  
Three Factor

This research is new in its attempt to take future time orientation, morningness orientation, and prospective memory as measures of mental prospection, and to examine a three-factor model that assumes working memory, mental prospection, and cognitive insight are independent but related higher-order cognitive constructs by using confirmatory factor analysis (CFA). The three-factor model produced a good fit to the data. An alternative one-factor model was tested and rejected. The results suggest that working memory and cognitive insight are distinguishable, related constructs, and that both are distinct from, but negatively associated with, mental prospection. In addition, structural equation modeling (SEM) showed that working memory had a strong positive effect on cognitive insight and a moderate negative effect on mental prospection.

Estimasi Pengaruh Faktor Internal Bank dan Stabilitas Makroekonomi terhadap Profitabilitas dengan Mediasi Rasio Pembiayaan Bermasalah di PT Bank Muamalat Indonesia

2020 ◽  
Vol 3 (2) ◽  
pp. 93-108
Author(s):  
Annisa Siti Fathonah ◽  
Dadang Hermawan
Keyword(s):  
Secondary Data ◽  
Financial Statements ◽  
Significant Positive Effect ◽  
Return On Assets ◽  
Internal Factors ◽  
Macroeconomic Factors ◽  
Operating Income ◽  
Significant Negative Effect ◽  
Negative Effect ◽  
Positive Effect

This study aims to determine and analyze how much influence the bank's internal factors such as Equity, Operational Costs per Operating Income (BOPO), Financing Deposit to Ratio (FDR), Non Performing Financing (NPF) as a mediator and external or macroeconomic factors namely inflation and Gross Domestic Product (GDP) on profitability represented by Return on Assets (ROA) at Bank Muamalat Indonesia for the period 2008-2018. The data used in this research are secondary data obtained from the publication of quarterly financial statements from 2008 to quarter 2 of 2018. The method that used in this research is path analysis with SPSS 20.0 as the analytical tool. The results of the study partially test the hypothesis (t-test), in substructure I shows that the capital variable has a significant negative effect on NPF, BOPO and inflation has a significant positive effect on NPF, FDR and GDP do not significantly influence NPF at Bank Muamalat Indonesia. In substructure II partially, Capital, BOPO, significant negative effect on ROA, FDR and NPF has a significant positive effect on ROA, Inflation and GDP does not significantly influence ROA while simultaneously significantly influencing ROA. Based on the sobel test, capital has a significant effect on ROA through NPF, BOPO has a significant effect on ROA through NPF, FDR has a significant effect on ROA through NPF, Inflation has a significant effect on ROA through NPF, while GDP has no significant effect on ROA through NPF.

Employee Engagement Dan Stress Kerja Pengaruhnya Terhadap Kepuasan Kerja Dan Turnover Intention di Aman Villas Nusa Dua – Bali

2020 ◽  
Vol 2 (1) ◽  
pp. 60-79
Author(s):  
Wayan Arya Paramarta ◽  
Ni Putu Kurnia Darmayanti
Keyword(s):  
Job Satisfaction ◽  
Employee Engagement ◽  
Work Stress ◽  
Turnover Intention ◽  
Secondary Data ◽  
Qualitative And Quantitative ◽  
Library Research ◽  
Analysis Technique ◽  
Negative Effect ◽  
Positive Effect

The aims of this study was to explain the effect of employee engagement and work stress on job satisfaction and turnover intention at Aman Villas Nusa Dua-Bali. The type of data used in this study is qualitative and quantitative data, with data sources namely primary and secondary data. Data collection method is interview, distributing questionnaires to respondents and library research, while the data analysis technique used Smart PLS 3.2.8. The results of this study showed that employee engagement had a positive effect and significant on job satisfaction, work stress had a negative effect but not significant on job satisfaction, employee engagement had a negative effect and significant on turnover intention, work stress had a positive effect and significant on turnover intention, job satisfaction had a negative effect but not significant on turnover intention, employee engagement had a positive effect but not significant on turnover intention trough job satisfaction, work stress had a positive effect but not significant on turnover intention trough job satisfaction at Aman Villas Nusa Dua-Bali.

The Factors Influencing Tourist Visitations Number in Curug Silawe

2019 ◽  
Vol 2 (3) ◽  
pp. 553-561
Author(s):  
Novian Hangga Prakosa ◽  
Fafurida Fafurida
Keyword(s):  
Economic Value ◽  
Consumer Surplus ◽  
Sampling Technique ◽  
Travel Cost ◽  
Analysis Tool ◽  
Literature Study ◽  
Factors Influencing ◽  
Negative Effect ◽  
Value Estimation ◽  
Positive Effect

The purposes of this research are to identify the influence of travel cost, income, distance, access, facilities, natural beautiness, and age on the number of individual visits to Curug Silawe and to estimate the economic value of Curug Silawe through individual travel cost method. The population in this study are tourists that visited Curug Silawe with sample of 98 respondents taken by the quota accidental sampling technique. The data collection method used are literature study and questionnaire. The analysis tool used are OLS linear regression and economic value estimation. The results showed the variables that influence the number of individual visits to Curug Silawe are income, distance and age. Income and age has a positive effect. While distance has a negative effect. The economic value of Curug Silawe reached IDR 1,109,930,140.48 per year. This value is obtained from consumer surplus obtained per individual per year of IDR 308,656.88. Tujuan dari penelitian ini adalah untuk mengidentifikasi pengaruh biaya perjalanan, pendapatan, jarak, akses, fasilitas, keindahan alam, dan usia pada jumlah kunjungan individu ke Curug Silawe dan untuk memperkirakan nilai ekonomi Curug Silawe melalui metode biaya perjalanan individu . Populasi dalam penelitian ini adalah wisatawan yang berkunjung ke Curug Silawe dengan sampel 98 responden yang diambil dengan teknik quota accidental sampling. Metode pengumpulan data yang digunakan adalah studi literatur dan kuesioner. Alat analisis yang digunakan adalah regresi linear OLS dan estimasi nilai ekonomi. Hasil penelitian menunjukkan variabel yang mempengaruhi jumlah kunjungan individu ke Curug Silawe adalah pendapatan, jarak dan usia. Penghasilan dan usia memiliki efek positif. Sedangkan jarak memiliki efek negatif. Nilai ekonomi Curug Silawe mencapai Rp1.109.930.140,48 per tahun. Nilai ini diperoleh dari surplus konsumen yang diperoleh per individu per tahun sebesar Rp308.656,88.

The depressing (negative) effect of oestradiol benzoate on the in vitro secretion of LH and FSH by the pituitary gland of the LRH-pretreated long-term ovariectomized rat changes into the augmentative (positive) effect after discontinuation of the LRH-pretreatment

1985 ◽  
Vol 110 (3) ◽  
pp. 329-337 ◽  
Author(s):  
G. A. Schuiling ◽  
H. Moes ◽  
T. R. Koiter
Keyword(s):  
Depressing Effect ◽  
Ovx Rats ◽  
Gonadotrophin Secretion ◽  
Oestradiol Benzoate ◽  
Negative Effect ◽  
Positive Effect ◽  
Perifusion System

Abstract. The effect of pretreatment in vivo with oestradiol benzoate on in vitro secretion of LH and FSH was studied in long-term ovariectomized (OVX) rats both at the end of a 5-day continuous in vivo pretreatment with LRH and 4-days after cessation of such LRH pretreatment. Rats were on day 0 sc implanted with osmotic minipumps which released LRH at the rate of 250 ng/h. Control rats were implanted with a piece of silicone elastomer with the dimensions of a minipump. On days 2 and 4 the rats were injected with either 3 μg EB or with oil. On day 5 part of the rats were decapitated and the in vitro autonomous (i.e. non-LRH-stimulated) and 'supra-maximally' LRHstimulated release of LH and FSH was studied using a perifusion system. From other rats the minipumps were removed on day 5 and perifusion was performed on day 9. On the 5th day of the in vivo LRH pretreatment the pituitary LH/FSH stores were partially depleted; the pituitaries of the EB-treated rats more so than those of the oil-injected rats. EB alone had no significant effect on the content of the pituitary LH- and FSH stores. On day 9, i.e. 4 days after removal of the minipumps, the pituitary LH and FSH contents had increased in both the oil- and the EB injected rats, but had not yet recovered to control values. In rats not subjected to the 5-days pretreatment with LRH EB had a positive effect on the supra-maximally LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. EB had no effect on the non-stimulated secretion of FSH. After 5 days of in vivo pretreatment with LRH only, the in vitro non-stimulated and supra-maximally LRH-stimulated secretion of both LH and FSH were strongly impaired, the effect correlating well with the LRH-induced depletion of the pituitary LH/FSH stores. In such LRH-pretreated rats EB had on day 5 a negative effect on the (already depressed) LRH-stimulated secretion of LH (not on that of FSH). EB had no effect on the non-stimulated LH/FSH secretion. It could be demonstrated that the negative effect of the combined LRH/EB pretreatment was mainly due to the depressing effect of this treatment on the pituitary LH and FSH stores: the effect of oestradiol on the pituitary LRH-responsiveness (release as related to pituitary gonadotrophin content) remained positive. In LRH-pretreated rats, however, this positive effect of EB was smaller than in rats not pretreated with LRH. Four days after removal of the minipumps there was again a positive effect of EB on the LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. The positive effect of EB on the pituitary LRH-responsiveness was as strong as in rats which had not been exposed to exogenous LRH. The non-stimulated secretion of FSH was again not affected by EB. The results demonstrate that the effect of EB on the oestrogen-sensitive components of gonadotrophin secretion consists of two components: an effect on the pituitary LRH-responsiveness proper, and an effect on the pituitary LH/FSH stores. The magnitude of the effect of EB on the LRH-responsiveness is LRH dependent: it is very weak (almost zero) in LRH-pretreated rats, but strong in rats not exposed to LRH as well as in rats of which the LRH-pretreatment was stopped 4 days previously. Similarly, the effect of EB on the pituitary LH and FSH stores is LRH-dependent: in the absence of LRH, EB has no influence on the contents of these stores, but EB can potentiate the depleting effect of LRH on the LH/FSH-stores. Also this effect disappear after cessation of the LRH-pretreatment.

Pengaruh Etika Bisnis Islam Terhadap Kesejahteraan Pedagang (Studi Kasus Pedagang Pusat Pasar Medan)

2019 ◽  
Vol 4 (1) ◽  
pp. 185
Author(s):  
Ya’ti Ikhwani Nasution
Keyword(s):  
Free Will ◽  
Quantitative Research ◽  
Statistical Tools ◽  
Independent Variables ◽  
Islamic Business Ethics ◽  
Negative Effect ◽  
Data Collection Technique ◽  
Questionnaire Method ◽  
Market Center ◽  
Positive Effect

The purpose of this study is to find out whether there is an influence of Islamic business ethics with the variables of unity, equilibrium, free will, responsibility, benevolence and the welfare of traders in the Pusat Pasar Medan. This research is a quantitative research and the analysis used is multiple regression analysis. The data collection technique used is the questionnaire method obtained directly from the respondent, namely the Pusat Pasar Medan Trader. Analyzed using statistical tools, namely SPSS Version 22. Based on the results of data processing has shown that there is a significant influence as partially and simultaneously among the unity, equilibrium, free will, responsibility and benovelence towards the welfare of traders in the Medan Market Center. For unity, free will, responsibility and benovelence have a positive effect on the welfare of traders in Medan Market Center. While the equilibrium variable has a negative effect on the welfare of Medan Market Center traders. The adjusted R square value is 0.345. This means that 34.5% increase in welfare can be explained by independent variables, namely the variables of unity, equilibrium, free will, responsibility and kindness. While 65.5% is explained by other factors.

Pengaruh Likuiditas, Pertumbuhan Kredit, Efisiensi, dan Kecukupan Modal Terhadap Profitabilitas

2020 ◽  
Vol 1 (1) ◽  
pp. 27-35
Author(s):  
Lia Hendrawati ◽  
Said Djamaludin
Keyword(s):  
Stock Exchange ◽  
Growth Efficiency ◽  
Research Data ◽  
Capital Adequacy ◽  
Annual Data ◽  
Significant Positive Effect ◽  
Credit Growth ◽  
Negative Effect ◽  
Positive Effect ◽  
Observation Period

This study to examine and analyze the effect of liquidity, credit growth, efficiency, and capital adequacy on the Bank’s profitability listed on the IDX partially and simultaneously. The research data are annual data for the 5-year observation period (2009-2013). This research was conducted at 33 banks listed on Indonesia Stock Exchange. Banks Analyzed that met the population criteria were 23 banks. The analytical method used in multiple linier regression. The results showed that liquidity, credit growth, efficiency, and capital adequacy together (simultaneously) significantly influence profitability. Partially,  liquidity has a significant positive effect on profitability, while efficiency has a significant negative effect. Credit growth and capital adequacy have no significant effect on profitability. Liquidity is the variable that has the biggest effect on the Bank’s profitability. 

FAKTOR FAKTOR YANG MEMPENGARUHI PENGUNGKAPAN AKUNTANSI SUMBER DAYA MANUSIA PADA PERBANKAN

Wahana ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 61-72
Author(s):  
Rani Eka Diansari ◽  
Sheftyka Rispin
Keyword(s):  
Human Resource ◽  
Stock Exchange ◽  
Sampling Technique ◽  
Significant Positive Effect ◽  
Accounting Disclosure ◽  
Analytical Technique ◽  
Human Resource Accounting ◽  
Negative Effect ◽  
Resource Accounting ◽  
Positive Effect

This study aims to determine the effect of firm size on human resource accounting disclosure, the effect of profitability on human resource accounting disclosure and the effect of company age on human resources accounting disclosure. The population of this study are banking companies listed on the Indonesia Stock Exchange in 2015-2017 with a sample of 120 samples. The sampling technique uses purposive sampling method. The data used is secondery data. Analytical technique used are descriptive statistical analysis, classical assumption test, multiple linear regression, F test, t test and R2 test. The result of the study concluded that 1.) the value of the company sixe was 2,870 and a significance value of 0,005. This proves that the size of company has a significant positive effect on human resource accounting disclosure, 2.) the profitability value is -0,585 and the significance value is 0,560. This proves that profitability has a negative effect not significant on human resource accounting disclosure and 3.) the value of the company age is 1,616 and the significance value is 0,109. This proves that the age company has no significant positive effect on human resource accounting disclosure.  Keywords: company size, profitability, company age, human resource accounting disclosure

Relevant Factors in Increasing School Principals' Entrepreneurship for Improving Students 'Achievements

2020 ◽  
Vol 11 (1) ◽  
pp. 75-75
Author(s):  
Bambang Ismanto ◽  
Lasmono Tri Sunaryanto ◽  
Gatot Sasongko
Keyword(s):  
Path Analysis ◽  
Learning Methods ◽  
Creative Behavior ◽  
Central Java ◽  
Negative Effect ◽  
Rank And Tenure ◽  
Use Of Social Media ◽  
Improving Student Achievement ◽  
Positive Effect

Entrepreneurship of principals in the educational environment to enhance students' creative behavior and achievements through innovation and the development of learning methods is very important. The principal has the task of managing resources and taking advantage of opportunities in improving the quality of education. This study aims to discuss the significant variables in increasing entrepreneurship principals. The study uses a quantitative approach with path analysis. The research sample was 334 Principals of Kindergarten, Elementary, Middle and High Schools in Central Java Province. Data collection was carried out by studying documentation and questionnaires. Data analysis was performed by path analysis with the AMOS program. The results showed that the rank and tenure as a teacher had a positive and significant effect on the tenure as a principal. While the use of social media has a significant negative effect. Of the various independent variables observed, only the existence of opportunities that had a significant positive effect on the ability of innovation of the principal. While the variables that significantly influence the development of learning methods are the ability of innovation and the presence of opportunities. The development of learning methods and the existence of opportunities will subsequently have a positive effect on improving student achievement, as the ultimate goal of developing entrepreneurship by the principal. Pathways to improve the entrepreneurship of principals are the existence of opportunities, tenure as principal, innovation and the development of instructional media. Keywords: Entrepreneurship, Principal, Inovation. Creativity,

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