Time use

Lecture Introduction to C programming language - Lesson 7: Loops (1). This lecture provides students with content including: loops is used to repeat a statement or a block of code several times; while statement; checking for End-of-Input; for statement; compare while and for;... Please refer to the detailed content of the lecture!

17p codabach1016 03-05-2024 0 0   Download

This research investigates the effect of cobalt precursor and calcination time on the morphology and catalytic activity of Co3O4 films in the oxygen evolution reaction (OER). Co3O4 films with porous flower-like nanostructures were obtained using cobalt nitrate as a cobalt precursor, while cobalt chlorides were used to produce porous nanoneedle structures Co3O4 film.

12p dianmotminh02 03-05-2024 2 1   Download

In this research, a single-step polymeric novel particle was synthesized from oak bark extract by nanoemulsion polymerization technique for the first time in the literature. It has been shown that the synthesized particles are achieved without losing any antioxidant and antibacterial properties of the oak bark extract. In this study, the p(OB) particles were reported for the first time and were characterized in terms of antioxidant, blood compatible, H2O2 scavenging, antibacterial, and antifungal potential to evaluate their use in biocompatible materials with drug release system potential.

13p dianmotminh02 03-05-2024 0 0   Download

A new megastigmane glycoside, (3S,5R,6R,9S)-6,9-epoxiionane-3,5-diol 3-O-βprimeveroside together with 7 compounds were isolated from Achyranthes aspera L. The chemical structures were elucidated through 1D-, 2DNMR, and HR-ESI-MS experiment. The absolute configuration of 1 was determined using combination of the experimental and theoretical calculation of CD spectra. Compounds 2 and 7 were reported for the first time from the genus Achyranthes.

5p dianmotminh02 03-05-2024 2 1   Download

The content of unsaturated fatty acids did differ between males and females of the two species studied. However, these differences are few and can be explained by the timing of their breeding seasons. The fatty acid composition of the fats from both investigated octopus species permits their use as food with nutritional value, and the production of bioactive additives.

8p dianmotminh02 03-05-2024 1 1   Download

Syzygium boisianum (Gagnep.) Merr. & L.M.Perry, locally named Tram bois, is widely distributed in primary or secondary forests of Vietnam, Thailand, and China. [6] For the first time, the current report provides information on chemical compositions in essential oil of S. boisianum leaves, collected from the northern part of central Vietnam. The obtained oil was also used to assess its antibacterial effects. The biological potential is highlighted by the molecular docking study.

6p dianmotminh02 03-05-2024 2 1   Download

This paper deals with a novel structure of serpentine micromixer with its high mixing efficiency and its fabrication of soft photolithography molds using dry film photoresist as an alternative to the conventional liquid photoresist, such as SU-8. This method provides simplification, significant time-savings, low cost due to non-cleanroom setting and less toxic developer solution.

8p dianmotminh02 03-05-2024 1 1   Download

The results identified that fly ash could be primarily considered as hazardous waste with 5/14 heavy metal parameters exceed the limit from 1.7 to 9.5 times and needs to be collected and treated properly. This result is also quite similar to the studies that have been done in China, the US or Viet Nam. Thus, SEM/EDX method could be used for analyzing heavy metal components in fly ash samples of solid waste treatment plants.

12p dianmotminh02 03-05-2024 4 1   Download

In this study, the gold nanoparticles (AuNPs) were synthesized via redox reaction, by using ethylene diamine tetra-acetic acid (EDTA) as a protecting and reducing agent, with tetrachloroauric acid (HAuCl4) as precursor and seed solution. The ultraviolet-visible spectroscopy (UV-Vis) method was utilized to investigated the reaction conditions (the EDTA:HAuCl4 ratio, the amount of seed solution and stirring solution time) at room temperature. The synthesized AuNPs were deposited on the surface of fluorine doped tin oxide (FTO) by electrophoresis deposition.

8p dianmotminh02 03-05-2024 3 1   Download

This paper presents the time history response of a sandwich beam with a porous core subjected to two moving harmonic loads with opposite directions. In the modelling, the beam is combined of two isotropic face sheets and a porous core with symmetric porosity distribution. The quasi-3D shear deformation beam theory in conjunction with Hamilton’s variational principle is utilized to set up the governing equations of motion. The Navier solution is used to obtain the displacement field.

14p dianmotminh02 03-05-2024 3 2   Download

This study uses chitin as a filler for a polyurethane composite foam. The obtained polymer composite materials (PCM) are examined the technological parameters of the foaming (start time, rise time, and apparent density), the physical-mechanical properties (the compressive stress, compression set, resilience), and the cross-link density.

8p dianmotminh02 03-05-2024 3 2   Download

This study also compares the predictive capability of these models to the model using average annual rainfall data that was widely used in previous studies. Finally, the best model fit is used for landslide spatial prediction mapping.

19p dianmotminh02 03-05-2024 3 2   Download

Carbon quantum dots (CQDs) are a new blooming carbon containing nanoparticles having size of less than 10 nm. They have wide range of application in the field of sensing of inorganic analytes, bio sensing, cell imaging, studying biological processes in living cells and also for drug delivery. T. In this review article we demonstrate how these tools are used to characterize newly synthesized CQDs, monitor the synthesis process along with finding its application in numerous fields.

26p dianmotminh02 03-05-2024 4 2   Download

To address this issue, in this study, the authors have put forth a novel set of parameters that can be used to evaluate the reduction in stiffness of spans over time. The stiffness is a critical factor that determines its structural integrity, and it is essential to monitor any changes in this parameter over the lifespan of the bridge.

11p viohoyo 25-04-2024 1 1   Download

According to the research findings, it is highly suggested to use an effective pricing strategy in order to retain customers in Businesses in Kurdistan. The limitation of this research is lack of time that the researcher was not able to gather more information and data regarding pricing strategy and customer retention. The novelty of this research as specifically to the Erbil market penetration pricing is the best to keep the customer for the long run of business.

15p longtimenosee10 26-04-2024 1 1   Download

Domestic consumption of nutritional products and food supplements are on the rise. This is due to the fact that consumers have become more affluent and aware of their health. Edible bird’s nest (EBN) is used as a health supplement for medicinal benefits to improve health quality. However, issues such as contamination and counterfeit EBN have caused fluctuation of the product’s price over time and consumers are slowly shunning away from consuming EBN products.

6p longtimenosee10 26-04-2024 1 1   Download

A questionnaire survey has been distributed for this study and result showed that there are several aspects under each of segments that can lead to customer satisfaction by using the PLS-SEM and IPMA analysis. The findings in this study can be used by other hotel operators to have a thoughtful mind on the factors that driven customers’ preferences and satisfaction that will aid in designing a message with better persuasion and at the same time attract more tourists to come and visit Malaysia.

7p longtimenosee10 26-04-2024 2 1   Download

This paper investigates the effectiveness of a swarm intelligence algorithm namely the time-varying binary particle swarm algorithm in finding an optimal subset of the breast cancer dataset’s features. After the feature selection phase, an artificial neural network was used for predicting the presence of malignant lesions in female breasts.

8p viohoyo 25-04-2024 3 1   Download

The education service today's is increasingly competitive and supply chain management in this system can be distinguish. It is encouraging schools at this time to improve their performance. One way can be used to improve teacher performance is job motivation. Therefore, the purpose of this study was to analyze the role of job motivation as mediating variable in the relationship between compensation and competence towards teacher performance in Lhokseumawe.

9p longtimenosee10 26-04-2024 2 1   Download

Italian State has always lived above its means, with a constant imbalance between income and expenditure and at the same time expanding its distance with respect to society (but the debt was paid by social groups that took advantage of it), a process that triggered off a perennial crisis of representation and strengthened the instability of relations between political institutions and society The article investigates the impact of the ‘political use’ of public debt by italian governments on the relationship between the State and society.

12p viohoyo 25-04-2024 2 1   Download