Obtained samples

The objective of this study is to analyze the chemical speciation of Pb in sediment samples from the Than Sa gold mining area to obtain comprehensive information regarding the level of Pb contamination in sediment samples from this area.

9p viengfa 28-10-2024 2 0   Download

The primary objective of this study is to elucidate the chemical speciation of copper (Cu) and conduct an assessment of the magnitude and probability of contamination of Cu in soil samples procured from the Pb/Zn mining, at the Hich village, Dong Hy district, Thai Nguyen province, in order to furnish critical data pertinent to the environmental stewardship of soil resources within this geographical domain.

10p viengfa 28-10-2024 0 0   Download

The synthesis and Rhodamine B removal efficiency of monazite monoclinic BiPO4 by hydrothermal route using Bi(NO3)3·5H2O, K2HPO4·3H2Oand HNO3 as staring materials were presented in this work. The obtained samples were characterized by X-ray powder diffraction, high-resolution transmission fieldemission scanning electron microscopy and diffuse reflectance UV-Vis spectrometry.

4p vikwong 29-09-2024 0 0   Download

Nano-hydroxyapatite/starch composite was synthesized using in situ precipitation. Starch concentration effect on the structure of composite was examined. Characterization of the obtained samples, The X-ray diffraction and Fourier transform infrared spectroscopy demonstrated the purity of the formed nano-HA in the starch matrix. Morphology studies of the samples, checked by field emission scanning electron microscope and transmission electron microscope, show the effects of starch on the size, shape, and morphology of hydroxyapatite nanoparticles.

6p dianmotminh02 03-05-2024 7 2   Download

The main objective of this study is to examine the effect of intellectual capital, debt policy, company size, supply chain and liquidity on earnings per share and dividends per share as intervening variables in companies registered in the LQ 45 stock market index that consists of 45 companies for the 2014-2016 period in Indonesia. Using a purposive sampling method obtained data (panels) of 60 observation data from 20 companies.

7p longtimenosee09 08-04-2024 6 1   Download

The research article "Polyester production by halophilic and halotolerant bacterial strains obtained from mangrove soil samples located in Northern Vietnam" reports halophilic and halotolerant bacteria isolated from mangrove forests located in Northern Vietnam. Several of these bacteria were able to synthesize polyhydroxyalkanoates (PHAs). PHAs are polyesters stored by microorganisms under the presence of considerable amounts of a carbon source and deficiency of other essential nutrient such as nitrogen or phosphorous.

12p runordie3 27-06-2022 10 3   Download

Lake sediments are very useful for providing high-resolution records of geomagnetic field variations, especially for the Holocene period. We present high-resolution paleomagnetic records from three cores (KCL12P1, P2, and P3) recovered from Küçükçekmece Lagoon, located at the northern shoreline of the Sea of Marmara, Turkey. The cores were subjected to a comprehensive paleomagnetic and rock magnetic investigation using oriented samples.

14p tanmocphong 29-01-2022 11 0   Download

The study clarified the main chemical composition of the roots of F. multiflora. Studying and developing a process of qualitative and quantitative analysis of several active ingredients at the same time. Application of analytical procedure has established and evaluated the content of active ingredients in some F. multiflora medicinal samples. The research results are obtained as a scientific basis for further studies.

23p extraenglish 24-05-2021 25 2   Download

Nhằm giúp các bạn có thêm tài liệu tham khảo và ôn thi tiếng Anh, mời các bạn cùng tham khảo nội dung tài liệu IELTS Academic Reading Sample 163 - Obtaining Linguistic Data dưới đây. Hy vọng nội dung tài liệu phục vụ hữu ích nhu cầu học tập và ôn thi.

5p mucnang000 17-04-2021 26 3   Download

In this paper, we present one method to determine the band gap energy of ZnO and ZnO:Tb3 materials. ZnO:Tb3 material has prepared by forced hydrolysis method. All samples have zinc oxide hexagonal wurzite structure. The obtained results show that the energy of the band gap depends on Tb3 molar ratio.

6p tamynhan5 10-12-2020 10 2   Download

This paper studies the influence of temperature 500 K, 1500 K, 2500 K, 3500 K and 4000 K on the microstructure and phase transition of a CaSiO3 bulk model using the Molecular Dynamics method with the Born-Mayer pair interaction potential and periodic boundary conditions.

10p tamynhan9 02-12-2020 14 2   Download

Titanium dioxide (TiO2) coated on multi-walled carbon nanotubes (CNTs) was synthesized with CNTs and TiO2 using the grinded method. The XRS spectra include that of the obtained single-phase anatase sample. The UV-Vis diffuse reflectance spectra show that the composite material can absorb at a higher wavelength and the absorption covers the whole visible region.

6p tamynhan9 02-12-2020 11 2   Download

Compared to regressions obtained using the traditional logarithmic transformation method, the above regressions had a much better fit. The original biomass data of the sample trees were also used to calculate the proportion of total biomass apportioned to trunk, branches, leaves and roots.

13p tamynhan8 04-11-2020 13 1   Download

The panel vector auto regression model is estimated using three main variables related to with profitability, financial liquidity, and financial leverage for 94 manufacturing companies from 2000 to 2017 in Indonesia. The aim is to examine the impact of oil price shocks on the ROA (profitability), CR (financial liquidity), and DER (financial leverage). The impulse reaction function of samples reveals some remarkable results. First, the response of ROA, DER, and CR appears to be consistent in many ways. Second, either Brent oil or WTI oil gives the same result for these variables.

5p nguyenxuankha_bevandan 13-08-2020 31 2   Download

The catalyst 7.5% NiO/TiO2 and seven samples of NiO/γ-Al2O3 with NiO content from 7.5% to 60% have been obtained and studied. Physico-chemical characteristics of the catalysts were determined by methods of Adsorption (BET), X-ray Diffraction (XRD), TemperatureProgrammed Reduction (TPR) and Hydrogen Pulse Titration. The catalytic properties of the obtained samples were investigated in the reaction of CO methanation at temperatures 180 – 220◦C and mole ratios hydrogen/carbon monoxide 25-100.

16p 12120609 01-06-2020 6 1   Download

Purified viral protein was obtained from Potato virus Y (PVY) pure culture maintained on potato (Solanum tuberosum L.) plants. The average concentration of the purified materials was found to be 153.1 ng/µl. PVY purified virus preparation was used for immunizing rabbit for production of polyclonal antisera against the virus. Good quality antisera were collected one week post boosters (AS4b, AS5b, AS6b and AS7b) and the IgG fractions were separated through ammonium sulphate precipitation.

6p cothumenhmong5 17-05-2020 18 4   Download

Understanding mechanical properties of healthy and unhealthy cerebral vessels is a key element in the development of their science and the relevant clinical diagnosis, prevention and treatment. Thirteen healthy samples were obtained from 23 middle cerebral arteries. The changes of force and deformation until the vessel rupture were recorded using a biaxial device.

14p tohitohi 19-05-2020 13 0   Download

The main objective of the study was to determine the factors that affect financial performance of micro and small business enterprises in Dembi dollo town administration. To achieve this objective the necessary data was collected from micro and small business enterprise owners by using questionnaires. The study employed a mixed research approach i.e. both quantitative and qualitative research approaches. Stratified random sampling technique was used to select proportional number of samples from the target population of the study.

13p tociitocii 24-04-2020 25 1   Download

This research aims to determine the effect of internal auditor quality, business strategy, and sustainability reporting on economic performance with moderated by earning management partially on companies kompas100 index during the period 2013-2016.The population in this research is all companies kompas100 index listed on Indonesia Stock Exchange during the period 2013-2016. The total samples tested were 9 companies selected by purposive sampling technique. Data type in this research use secondary data obtained from Indonesia Stock Exchange and site respectively of company being sampled.

12p tociitocii 24-04-2020 31 1   Download

Research targets of the thesis: (i) To thereticallystudy the overall characteristics of MIH and their impacts based on theoretical calculation (ii) To carry out experiments on the influence of alternating magnetic field, particle size and viscosity on specific loss power for CoFe2O4 and MnFe2O4, chosen as representative of respectively high K and low K magnetic nanoparticles; and to compare the experimental behavior with that obtained by theroretical calculations.

23p xacxuoc4321 08-07-2019 55 3   Download