scholarly journals Ecotoxicological effects of silver nanoparticles in marine mussels

2021 ◽  
Author(s):  
Antonio Calisi ◽  
Candida Lorusso ◽  
Julian A Gallego Urrea ◽  
Martin Hassellov ◽  
Francesco Dondero
Keyword(s):  
Silver Nanoparticles ◽  
Regression Analysis ◽  
Full Range ◽  
Area Under The Curve ◽  
Bioindicator Species ◽  
Marine Mussels ◽  
Independent Variable ◽  
Preferential Uptake ◽  
Persistence Model

In the marine bioindicator species M. galloprovincialis Lam we predicted toxicity and bioaccumulation of 5 nm alkane-coated and 50 nm uncoated silver nanoparticles (AgNPs) along with Ag+, as a function of the actual dose level. We generated a time persistence model of silver concentration in seawater and used the Area Under the Curve (AUC) as independent variable in hazard assessment. This approach allowed us to evaluate unbiased ecotoxicological endpoints for acute (survival) and chronic toxicity (byssal adhesion). Logistic regression analysis rendered LC5096h values of 0.68 ± 0.08; 1.00 ± 0.20; 1.00 ± 0.42 mg h L-1 respectively for Ag+, 5 nm and 50 nm AgNP posing no evidence the silver form is a necessary variable to predict the survival outcome. By contrast, for byssal adhesion regression analysis revealed a much higher toxicological potential of Ag+ vs AgNPs, 0.0021 ± 0.0009; 0.053 ± 0.016; 0.021 (no computable error for 50 nm AgNP) mg h L-1, and undoubtedly confirmed a role of the silver form. Bioaccumulation was higher for Ag+ > 5 nm AgNP > 50 nm AgNP reflecting a parallel with the preferential uptake route / target organ. We, eventually, provided a full range of toxicological endpoints to derive risk quotients.

scholarly journals PENGARUH PEMBIAYAAN MIKRO SYARIAH TERHADAP TINGKAT PERKEMBANGAN USAHA MIKRO KECIL MENENGAH (UMKM) PADA ANGGOTA BMT DI JAWA BARAT

2019 ◽  
Vol 2 (1) ◽  
pp. 48-56
Author(s):  
Uus Ahmad Husaeni ◽  
Tini Kusmayati Dewi
Keyword(s):  
Regression Analysis ◽  
Research Method ◽  
Linear Regression Analysis ◽  
Business Development ◽  
Simple Linear Regression ◽  
Independent Variable ◽  
Islamic Microfinance ◽  
Development Levels ◽  
Micro Enterprises

This study aims to analyze the role of Islamic microfinance on the level of development of small and medium micro enterprises in BMT members in West Java. The research method is carried out using a type of quantitative associative approach. The population of this study are members of BMT Baytul Ikhtiar Bogor, BMT ItQan Bandung, BMT Amanah Bersama Bandung and BMT Ibadurrahman Sukabumi, which number 40 people. While the technique for analyzing data is using Simple Linear Regression analysis. The results of the study found that the role of Islamic microfinance in providing business capital to members of BMT has an important role to improve small and medium micro enterprises. The R-Square value is 0.529 or 52.90%. It is seen that the independent variable of Islamic microfinance in explaining the dependent variable of SMEs Business Development Levels on BMT members is 52.90%, the remaining 47.10% is explained by other variables outside the model that are not examined. Based on the results of testing the F test, the value of Fcount> Ftable is 61.875 > 3.24 with the hypothesis H0 being rejected and Ha being accepted with a significance of 0.000 < 0.05.

PENGARUH SEKTOR PARIWISATA TERHADAP KEMANDIRIAN FISKAL DAERAH KABUPATEN PACITAN (PASCA PENETAPAN KAWASAN GEOPARK GUNUNGSEWU)

2018 ◽  
Vol 12 (02) ◽  
pp. 35-44
Author(s):  
Rosalina Nur Annisa ◽  
Yerika Ayu Salindri
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Central Government ◽  
Linear Regression Analysis ◽  
Simple Linear Regression ◽  
Simple Linear Regression Analysis ◽  
Tourism Sector ◽  
Independent Variable ◽  
District Government

In the management of tourism sector, Pacitan regency can not be separated from the role of central government in meeting the economic needs and tourism infrastructure in Pacitan regency. The policy of regional autonomy has encouraged the Pacitan local government to manage its own finances in order to increase the regional fiscal independence. The research sample is district government of Pacitan determined by purposive sampling method. The method of analysis in this study is to use simple linear regression analysis. The analysis used is classical assumption test and simple linear regression analysis is used to know the influence between independent variable (X) that is tourism sector to dependent variable (Y) that is fiscal independence. From the results of research proved that the tourism sector positively affect the fiscal independence of the region Pacitan post-establishment of Geopark Gunungsewu. Keywords: Tourism Sector, Fiscal Independence, Geopark Gunungsewu

An efficient algorithm based on electrograms characteristics to identify ventricular tachycardia isthmus entrance in post-infarct patients

EP Europace ◽  
2019 ◽  
Author(s):  
Alberto Battaglia ◽  
Freddy Odille ◽  
Isabelle Magnin-Poull ◽  
Jean-Marc Sellal ◽  
Philip Hoyland ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Predictive Value ◽  
Area Under The Curve ◽  
Limited Data ◽  
Recording Site ◽  
Bipolar Voltage

Abstract Aims Our study assesses the value of electrograms (EGMs) characteristics to identify a ventricular tachycardia (VT) isthmus entrance in patients with post-infarct VT. Post-infarct VTs are mostly due to a re-entrant circuit. A pacemapping (PM) approach is able to localize the VT isthmus during sinus rhythm. Limited data are available about the role of local EGMs in defining VT isthmus location. Methods and results Twenty consecutive patients (70% male) referred for post-infarct VT catheter ablation were included in the present study. The VT isthmus was defined according to the PM method. At each recording site, 10 characteristics of the local EGM were assessed to predict the location of the VT isthmus entrance. In total, 924 EGMs were acquired, of which 127 were located in the VT isthmus entrance. Logistic regression analysis showed that bipolar voltage, number of EGM positive peaks, and sQRS interval were independently associated with VT isthmus entrance location. The ROC curve best fitted the model at the cut-off 0.1641 (sensitivity 72%, specificity 75.2%, positive predictive value 31.3%, negative predictive value 94.4%, area under the curve 0.78, P < 0.001). Based upon these results, we developed an algorithm implemented in an automatic calculator to determine the likelihood that an EGM is located at a VT isthmus entrance. Conclusion Our study suggests that three EGM characteristics: bipolar voltage, number of positive peaks, and sQRS interval can successfully identify a VT isthmus entrance in post-infarct patients.

scholarly journals The Role of Discipline and Career Development in Improving Employee Work Achievement

2021 ◽  
Vol 3 (1) ◽  
pp. 20-25
Author(s):  
Nailin Nikmatul Maulidiyah ◽  
Moh. Samsul Arifin ◽  
Dian Ary Setyawan
Keyword(s):  
Regression Analysis ◽  
Career Development ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Analytical Tool ◽  
Development Work ◽  
Independent Variable ◽  
Permanent Employees ◽  
Branch Office

This study aims to analyze the effect of discipline and career development on employee work achievement at PT. Bank Syariah Mandiri Jember Brach office. The population in this study is permanent employees at PT. Bank Syariah Mandiri Jember Brach office which numbered 54 employees. The analytical tool used in this study is multiple linear regression analysis to test the effect of the independent variable on the dependent variable. The results showed that the disciplinary significantly influence work achievement at PT. Bank Syariah Mandiri Jember Brach office. Career development significantly influenced work achievement at PT. Bank Syariah Mandiri Jember Branch Office. Simultaneously, discipline and career development significantly influenced work achievement at PT. Bank Syariah Mandiri Jember Branch Office. Keyword: Discipline; Career Development; Work Achievement

scholarly journals Role of morphometry in determining the feeding success of small freshwater fish species: Multivariate analysis of Amblypharyngodon mola, Puntius ticto, and Esomus danricus

2015 ◽  
Vol 23 (2) ◽  
pp. 79-90
Author(s):  
Sudarshana Nandi ◽  
Surjya Kumar Saikia
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Mouth Opening ◽  
High Loading ◽  
Feeding Success ◽  
Two Factors ◽  
Independent Variable ◽  
Gut Length

Abstract Factor and multiple regression analysis were used to extract the morphometric variables that contributed to feeding success in three small freshwater fishes. Of the first two factors, factor 1, showed high loading of gut weight (GW), length of the upper (UJ), and lower jaws (LJ) in mola, Amblypharyngodon mola (Hamilton), and GW and vertical mouth opening (VMO) in punti, Puntius ticto (Hamilton). In darikana, Esomus danricus (Hamilton), GW, horizontal mouth opening (HMO), and VMO were highly loaded on factor 2. Gut length (GL) was closely associated withGWof all three species. Subsequently, variables with high loading on factors 1 or 2 were subjected to multiple regression analysis to observe their effect on feeding success, consideringGWas the dependent variable and the extracted variables as the independent variable. In A. mola, HMO and GL influenced GW, whereas in P. ticto, only GL determined GW in the fish. In E. danricus, GL, VMO, and HMO exerted a low effect on GW. Exceptionally, the present study suggested that feeding success in small fishes is largely determined by UJ, LJ, and GL or mouth openings.

Plasma Levels of Protein S, Protein C, and Factor X: Effects of Sex, Hormonal State and Age

1995 ◽  
Vol 74 (05) ◽  
pp. 1271-1275 ◽  
Author(s):  
C M A Henkens ◽  
V J J Bom ◽  
W van der Schaaf ◽  
P M Pelsma ◽  
C Th Smit Sibinga ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Postmenopausal Women ◽  
Protein C ◽  
Blood Donors ◽  
Premenopausal Women ◽  
Protein S ◽  
The Other ◽  
Factor X ◽  
Normal Ranges

SummaryWe measured total and free protein S (PS), protein C (PC) and factor X (FX) in 393 healthy blood donors to assess differences in relation to sex, hormonal state and age. All measured proteins were lower in women as compared to men, as were levels in premenopausal women as compared to postmenopausal women. Multiple regression analysis showed that both age and subgroup (men, pre- and postmenopausal women) were of significance for the levels of total and free PS and PC, the subgroup effect being caused by the differences between the premenopausal women and the other groups. This indicates a role of sex-hormones, most likely estrogens, in the regulation of levels of pro- and anticoagulant factors under physiologic conditions. These differences should be taken into account in daily clinical practice and may necessitate different normal ranges for men, pre- and postmenopausal women.

Moderating Role of Learning Strategies Between Meta-Cognitive Awareness and Study Habits Among University Students

2019 ◽  
Vol 34 (Spring 2019) ◽  
pp. 215-231
Author(s):  
Mussarat J. Khan ◽  
Seemab Rasheed
Keyword(s):  
Regression Analysis ◽  
Resource Management ◽  
University Students ◽  
Learning Strategies ◽  
Management Strategies ◽  
Cognitive Strategies ◽  
Study Habits ◽  
Good Reliability ◽  
Cognitive Awareness

The purpose of present study is to examine the role of learning strategies as moderator between meta-cognitive awareness and study habits among university students. Sample comprises of 200 students (100 male students and 100 female students) of various universities of Islamabad and Rawalpindi with age ranging from 18-25 years. In order to assess study variables questionnaires were used included Meta-Cognitive Awareness Inventory (Schraw & Dennison, 1994) measuring two-components of meta-cognition that are knowledge and regulation of cognition. Study habits demonstrated by the students were measured by the Study Habits Inventory (Wrenn, 1941). Motivated Strategies for Learning Questionnaire (Pintrich, Smith, Garcia, & McKeachie, 1991) which includes motivation and learning strategies scales. In the present study, only the learning strategies section was utilized, which measures the cognitive strategies and resource management strategies. Results revealed positive correlation between research instruments and are also having good reliability. Regression analysis reflected that meta-cognitive awareness predicts study habits among university students. Regression analysis also suggested that learning strategies including resource management strategies and cognitive strategies significantly moderates the relationship between meta-cognitive awareness and study habits. It is also explored gender differences on learning strategies, meta-cognitive awareness and study habits. Future implications of the study were also discussed.

PENGARUH KUALITAS PRODUK DAN RELIGIUSITAS TERHADAP KEPUTUSAN NASABAH PRODUK SIMPANAN PADA BSM CABANG PURWOKERTO

2017 ◽  
Vol 4 (1) ◽  
pp. 189-215
Author(s):  
Yoiz Shofwa Shafrani
Keyword(s):  
Regression Analysis ◽  
Product Quality ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Analytical Tool ◽  
The Other ◽  
Financial Assets ◽  
Islamic Bank

Perkembangan dunia perbankan syariah tidak lepas dari peran para nasabah yang memberikan kepercayaan terhadap pihak perbankan untuk penyimpanan asset keuangannya. Faktanya banyak kelompok nasabah yang memutuskan untuk menjadi nasabah di perbankan syariah karena faktor religiusitasnya. Faktor lain yang dapat ikut mempengaruhi keputusan nasabah adalah kualitas produk. Di mana kualitas produk merupakan karakteristik yang melekat dari suatu produk. Kemungkinan yang terjadi bahwa kebanyakan nasabah pada perbankan syariah juga masih merupakan nasabah perbankan konvensional.Tujuan yang ingin dicapai dalam penelitian ini adalah untuk mengetahui pengaruh kualitas produk dan tingkat religiusitas nasabah terhadap keputusan nasabah untuk menyimpan dananya atau tidak di BSM Cabang Purwokerto. Alat analisis yang digunakan adalah analisis regresi linier berganda, dengan jumlah sampel 100 nasabah. Diperoleh hasil Y = 5,046 + 0,101X1 + 0,218X2. Berdasarkan uji F yang sudah dilakukan maka dapat diketahui bahwa variabel kualitas produk dan religiusitas secara bersama – sama berpengaruh terhadap keputusan nasabah untuk menyimpan dananya di BSM Cabang Purwokerto. Berdasarkan uji t yang sudah dilakukan dapat diketahui bahwa secara partial baik variabel kualitas produk maupun variabel religiusitas berpengaruh terhadap keputusan nasabah untuk menyimpan dananya di BSM Cabang Purwokerto. The progress of the Islamic bank cannot be separated from the role of its customers who give trust to the bank to deposit their financial assets. It is a fact many groups of customers decide to be the customers of the Islamic bank because of their religiosity. The other influences factor of a customer’s decision is the quality of the product. The aim of this research was to determine the effect of product quality and level of customers’ religiosity towards customers’ decision whether to keep their funds in Syariah Mandiri Bank, Branch of Purwokerto, or not. The analytical tool used was multiple linear regression analysis, with a sample of 100 customers. The results indicate Y = 5,046 + 0,101X1 + 0,218X2. Based on F, it can be seen that both variables of product quality and religiosity simultanously affect the customers’ decision to keep theirfunds in BSM Branch of Purwokerto. Based on t test, it can be seen that independently, either variable of product quality or variables of religiosityinfluences the customers’ decision to keep their funds in BSM Branch of Purwokerto.

PENGARUH MOTIVASI KERJA, KOMUNIKASI INTERPERSONAL DAN BUDAYA ORGANISASI TERHADAP KINERJA GURU (STUDI KASUS DI SMPN 5 PARIAMAN)

2020 ◽  
Author(s):  
Hasnah Mila
Keyword(s):  
Organizational Culture ◽  
Regression Analysis ◽  
Interpersonal Communication ◽  
Work Motivation ◽  
Employee Performance ◽  
High Reliability ◽  
Eligibility Criteria ◽  
Validity Test ◽  
Independent Variable ◽  
Performance Teachers

The independent independent variables in this study are Work Motivation, Interpersonal Communication and Organizational Culture while the dependent variable is the Performance Teachers and Employees SMPN 5 Pariaman. The sample used in this study as many as 32 respondents determined by using saturated samples. To know the influence of independent variable to dependent variable partially, used t test. While to know the effect of independent variable to dependent variable simultaneously, used F test. The assumption used in the validity test is if R-count&gt; R-table item is declared valid. The R-arithmetic shown in the table above, from each item indicates that R-arithmetic&gt; R-table so the item is declared valid. Based on the validity test of Work Motivation instrument, Interpersonal Communication and Organizational Culture on Teacher and Employee Performance, all items are declared valid and reliability test results indicate that the instrument has high reliability. This means that the eligibility criteria Instrument Motivation Work, Interpersonal Communication and Organizational Culture on Performance Teachers and Employees have met the criteria of good instrument requirements, namely valid and reliable. Regression analysis results obtained t count = 2.550 while t table = 2.042 so thitung&gt; ttable and significance value is 0.000, this value is smaller than α = 0,05 so it can be said that motivation factor (X1) (Y) Regression analysis results obtained t count = 1.076 while the value of t table = 2.042 so that tcount &lt; ttable or and its not significance value is 0.000, this value is smaller than α = 0,05, and proved variable of Interpersonal Communication (X2) (Y) Regression analysis results obtained t count = 1.715 while the value of t table = 2.042 so thitung&lt; ttable and its not significance value is 0.000, this value is smaller than α = 0,05, and proved Organizational Culture variable (X3) The value of correlation coefficient (R) turns out that the correlation is positive. This means that there is a strong one-way relationship, where the change of increment that occurs in the free factor of Work Motivation, Personal Communication and Organizational Culture is accompanied by the change of the bound factor increase that is Teacher Performance (Y).

PENGARUH GAYA KEPEMIMPINAN, MOTIVASI KERJA DAN KOMPETENSI TERHADAP KINERJA PEGAWAI PADA DINAS PEMBERDAYAAN MASYARAKAT DAN DESA PROVINSI SUMATERA BARAT

2020 ◽  
Author(s):  
Mafral
Keyword(s):  
Regression Analysis ◽  
Leadership Style ◽  
Work Motivation ◽  
Employee Performance ◽  
High Reliability ◽  
Test Results ◽  
Eligibility Criteria ◽  
Validity Test ◽  
Negative Effect ◽  
Independent Variable

The independent independent variables in this study as many as 89 respondents are determined by using saturated samples. To know the influence of independent variable to dependent variable partially, used t test. While to know the effect of independent variable to dependent variable simultaneously, used F test. The assumption used in the validity test is if R-count&gt; R-table item is declared valid. The R-arithmetic shown in the table above, from each item indicates that R-arithmetic&gt; R- table so the item is declared valid. Based on the validity test of the instrument of Leadership Style, Work Motivation, and Competence on Employee Performance, all items are declared valid and reliability test results indicate that the instrument has high reliability. This means that the eligibility criteria of the Instrument of Leadership Style, Work Motivation, Competency and Employee Performance have met the criteria of good instrument requirements, that is valid and reliable. The result of regression analysis of Leadership Style obtained by tcount = 20,91 while ttable value = 1,988 tcount&gt; ttable proved variable of Leadership Style influence to Employee Performance. Work Motivation regression analysis obtained tcount = 17.62 while the value ttable = 1.988 tcount&gt; ttabel proven Motivational Work variables influence on Employee Performance. Regression analysis Competence obtained value tcount = - 06.85 while ttable =1.988 so thitung&gt; ttable and proven variable Competence have a negative effect on Employee Performance.

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