6 research outputs found
PENGARUH SOLVABILITAS DAN NILAI PASAR TERHADAP HARGA SAHAM PERUSAHAAN (Saektor Trade, Service & Investment yang Terdaftar di Bursa Efek Indonesia (BEI) Periode 2016-2020)
No full textThis study aims to determine and analyze the effect of Solvency as measured by Debt to Equity Ratio (DER) and Market as measured by Earning Per Share (EPS) on stock prices as measured by the annual closing price of listed trading, service and investment sector companies. on the Indonesia Stock Exchange (IDX) for the 2016-2020 period.
This research uses descriptive and verification methods. The data used in this study are secondary data sourced from statistical reports and company financial reports. The research population is 180 companies in the trade, services and investment sectors listed on the Indonesia Stock Exchange for the 2016-2020 period. The samples taken were 96 companies, using purposive sampling technique.
The analysis technique used is (1) panel data analysis based on the test model consisting of the Chow test, Haussman test and Lagrange multiplier test. And the last analysis technique is (2) Hypothesis Testing through Regression Significance Test (F Test) and Regression Coefficient Significance Test (t Test). Prior to panel data analysis, the Classical Assumption Test was performed using the Linearity Test, Multicollinearity Test, Autocorrelation Test and Heteroscedasticity Test as a requirement to be able to perform panel data regression tests.
In this study, data processing uses Eviews 9 software. Based on the results of the F test in this study, it shows that Solvency and Market Value have an effect on stock prices. Based on the t test, the results of this study indicate that solvency has a negative effect on stock prices and market value has a positive effect on stock prices. As for the value of the Adjusted R-squared of 0.868699 or 86.87%.
Keywords: Stock Price, Solvency, Debt To Equity Ratio (DER), Market Value, Earning Per Shares (EPS), Signaling Theory
Thermal Characterisation of Micro Flat Aluminium Heat Pipe Arrays by Varying Working Fluid and Inclination Angle
No full textA micro heat pipe array is desirable owing to its high heat transfer capacity, compact size, and high surface–volume ratio compared with conventional heat pipes. In this study, micro flat aluminium heat pipe arrays (MF-AHPA) were developed and systematically characterised by varying working fluid and inclination angle. Three MF-AHPAs with different working fluids, i.e., acetone, cyclopentane, and n-hexane, were fabricated. The acetone MF-AHPA achieved the best thermal performance. The underlying mechanism is the small flow viscous friction and small shearing force of liquid vapour. Additionally, the experimental results show a strong dependence of MF-AHPAs’ thermal resistance on the orientation due to the gravitational effect on axial liquid distribution. Finally, a criterion is proposed to determine the optimal inclination angle of the MF-AHPA. In the present study, a volumetric fraction (αa,c) of 74 ± 7% has been shown to well predict an optimal inclination angle of the MF-AHPAs with various working fluids and heat loads
Development of In-House ELISA using recombinant LipL32 for Detection of Human Leptospirosis in Indonesia
No full textEarly laboratory confirmation is important for the accurate diagnosis and treatment of patient infected by leptospirosis. However, Microscopic agglutination test (MAT) as the gold standard for detection of human leptospirosis has many limitation and only available in reference laboratories. Therefore, many studies suggested LipL32 protein as a good candidate for development of leptospirosis detection kit because it is highly conserved and produced only in pathogenic Leptospira species. In this study, we aim to investigate the performance of our in-house ELISA using recombinant LipL32 to detect leptospirosis in Indonesia. Fourteen human sera were used in this study and the infection status were determine using MAT. The result showed that nine of eleven MAT positive sera were successfully recognized by LipL32 ELISA. The antibody binding to LipL32 was also confirm by immunoblot. There was one of three MAT negative sera has high OD above 0.5 in ELISA, but it showed negative reaction in immunoblot result. Overall, this study demonstrated that recombinant LipL32 protein can recognized antibody from human leptospirosis and can be used as a universal antigen to detect infection by any serovars of pathogenic leptospira
Persepsi Pelajar Sarjana Muda Sains Serta Pendidikan (Pengajian Islam) Universisti Teknologi Malaysia, Skudai Terhadap Ajaran Sesat Di Malaysia
No full textPerkembangan Ajaran Sesat bukan sahaja mendapat tempat dalam kalangan masyarakat awam tetapi telah menular kepada golongan cerdik pandai dan IPT. Melihat kepada fenomena ini, pengkaji melakukan kajian terhadap pelajar-pelajar SPI, UTM, Skudai untuk melihat persepsi mereka terhadap permasalahan ini. Kajian ini dijalankan ke atas pelajar tahun 3 dan 4 SPI, UTM, Skudai. Ia dilaksanakan bertujuan bagi mengenal pasti persepsi pelajar terhadap ajaran sesat dan mengetahui tahap pengetahuan pelajar tentang ajaran sesat. Di samping itu, kajian ini juga bertujuan untuk mengenal pasti usaha yang sepatutnya dilakukan oleh pelajar bagi membendung perkembangan ajaran sesat di Malaysia. Seramai 81 orang pelajar tahun 3 dan 4 SPI, UTM, Skudai terlibat dalam kajian ini. Pengkaji telah menggunakan soal selidik yang mengandungi 41 item soalan sebagai instrument kajian, manakala data yang diperolehi telah dianalisis dengan menggunakan perisian “Statistical Packages For Social Sciences” (SPSS) 14.0 for windows bagi mendapatkan kekerapan, peratusan dan min data. Nilai kebolehpercayaan alat kajian adalah _ = 0.93. analisis statistik deskriptif telah digunakan dalam tatacara menganalisis data. Secara keseluruhannya, hasil kajian menunjukkan persepsi pelajar SPI, UTM, Skudai terhadap ajaran sesat berada pada tahap tinggi iaitu pada nilai min 3.89. Ini bermakna pelajar memiliki persepsi yang negatif terhadap ajaran sesat, mereka juga memiliki tahap pengetahuan yang baik tentang ajaran sesat. Di samping itu, pelajar juga mengetahui bentuk-bentuk usaha yang perlu mereka lakukan bagi membendung penyebaran ajaran sesat di Malaysia
Complexes of cyclen-based macrocyclic ligands with a phosphinate pendant arm
No full textLanthanide(III) complexes of DOTA derivatives are utilized in the medical imaging techniques such as magnetic resonance imaging (MRI), magnetic resonance angiography (MRA), and magnetic resonance spectroscopy (MRS), nuclear imaging (PET and SPECT), or optical methods (luminescence). It has been shown that relaxometric parameters of the Gd(III) complexes of DOTA derivatives with a phosphinic acid pendant arm (Gd-DO3APR ) can reach optimal values (e.g. water residence time, τM, being close to ~10 ns). The relaxometric parameters can be further modified through the phosphorus substituents. It is also known that the complexes possess a high thermodynamic stability and they are kinetically inert. The main goal of this Thesis is an investigation of the effect of pendant amino group protonation in substituents bound to the phosphorus atom on properties of the complexes. Thus in this Thesis, DOTA derivatives with the phosphinic acid pendant arm with an amino group and their complexes were prepared and characterized. The complexes are intended as contrast agents for molecular imaging techniques (mainly for MRI and 31 P MRS). The first part of the Thesis introduces two new versatile "phospha-Mannich" protocols performed under mild conditions. Amino-H-phosphinic acids (AHPAs) were synthesized with excess of..
Komplexy makrocyklických ligandů odvozených od cyklenu mající fosfinátovou pendantní skupinu
No full text(česky) Komplexy lanthanoidů(III) s deriváty DOTA jsou využívány pro zobrazování pomocí magnetické tomografie (MRI), magnetické rezonanční angiografie (MRA) nebo magnetické rezonanční spektroskopie (MRS). Tyto komplexy jsou také používány v nukleární medicíně (PET a SPECT) a pro zobrazování pomocí optických metod (luminiscence). Je známo, že relaxometrické vlastnosti komplexů Gd(III) s deriváty DOTA obsahujících jednu fosfinovou skupinu jako pendantní rameno, Gd-DO3APR , mohou být blízké optimálním (např. rezidenční čas koordinované molekuly vody, τM, může dosáhnout optimální hodnoty ~10 ns). Relaxometrické parametry lze dále ladit pomocí substituentu na atomu fosforu. Je také známo, že tyto komplexy mají vysokou termodynamickou stabilitu a jsou kineticky inertní. Hlavním cílem této práce je zjistit, jak protonizace aminoskupiny přítomné v substituentu na atomu fosforu bude ovlivňovat vlastnosti těchto komplexů. V této práci byly připraveny a charakterizovány deriváty DOTA s jedním fosfinátovým pendantním ramenem obsahujícím aminoskupinu a jejich komplexy. Tyto komplexy by mohly posloužit jako kontrastní látky pro molekulární zobrazování pomocí MRI nebo 31 P MRS. První část této práce je věnována dvěma "fosfa-Mannichovým" reakcím, které probíhají za mírných podmínek. Amino-H-fosfinové kyseliny...Lanthanide(III) complexes of DOTA derivatives are utilized in the medical imaging techniques such as magnetic resonance imaging (MRI), magnetic resonance angiography (MRA), and magnetic resonance spectroscopy (MRS), nuclear imaging (PET and SPECT), or optical methods (luminescence). It has been shown that relaxometric parameters of the Gd(III) complexes of DOTA derivatives with a phosphinic acid pendant arm (Gd-DO3APR ) can reach optimal values (e.g. water residence time, τM, being close to ~10 ns). The relaxometric parameters can be further modified through the phosphorus substituents. It is also known that the complexes possess a high thermodynamic stability and they are kinetically inert. The main goal of this Thesis is an investigation of the effect of pendant amino group protonation in substituents bound to the phosphorus atom on properties of the complexes. Thus in this Thesis, DOTA derivatives with the phosphinic acid pendant arm with an amino group and their complexes were prepared and characterized. The complexes are intended as contrast agents for molecular imaging techniques (mainly for MRI and 31 P MRS). The first part of the Thesis introduces two new versatile "phospha-Mannich" protocols performed under mild conditions. Amino-H-phosphinic acids (AHPAs) were synthesized with excess of...Katedra anorganické chemieDepartment of Inorganic ChemistryFaculty of SciencePřírodovědecká fakult
