Science and electronics

The paper focuses on the mechanical and control system development of a receptionist robot. This is the result of a 4-month cooperation project between FPT Global Automation Company and the participation of students in Mechatronic Engineering and Electronic & Telecommunication Engineering programs of The University of Danang, University of Science and Technology (UD-UST).

4p vichristinelagarde 04-07-2022 6 0   Download

In this study, the evolution of the dislocation cell structure and variation of mechanical properties of structural steel under low-cycle fatigue were studied using the indentation experiment, optical microscope, and transmission electron microscope examinations. The results indicated that the dislocation cell structure was well-formed under cyclic loading.

13p haoasakura 30-05-2022 6 1   Download

Petrified wood samples are found within terrestrial sediments belonging to the Late Oligocene-Early Miocene Danişmen Formation in Malkara-Keşan located in the southwest of the Thrace Basin. The petrified wood in both regions is usually silicified and partly coalified. The silicification of the Tertiary wood in the Malkara-Keşan region is associated with volcanic activity and coeval sedimentation. Thin sections from petrified wood samples were taken as transverse, tangential, and radial sections.

22p tanmocphong 29-01-2022 12 0   Download

Current evidence regarding the efficacy of ethanol locks in preventing catheter-related bloodstream infection (CRBI) is inconclusive. Methods: Electronic databases, including PubMed, Web of Science, Embase, and the Cochrane Library (until April 2018),were systematically searched for relevant studies.

15p vampires36 30-12-2021 6 0   Download

This study was carried out using light microscope (LM) and scanning electron microscopy (SEM). Pollen morphology of this genus is fairly uniform. Generally radially symmetrical apolar, mostly spheroidal, pantoporate.

7p schindler 30-12-2021 2 0   Download

The inner integument is recorded two types. The data proved useful in the construction of a bracketed key to the species. The potential taxonomic value of the recorded characters is indicated by the richness of variation recorded in the limited sample of genera and species.

10p schindler 30-12-2021 3 0   Download

In this study we extracted bioactive ingredients from fruiting bodies of Laetiporus sulphureus with different solvents and tested the antimicrobial and antitumor activities. The predominant lipid composition of the fruiting bodies was studied with GC–MS and revealed a high amount of oleic acid, octadecenoic acid and ergosterol derivatives.

9p schindler 30-12-2021 2 0   Download

This research reviewed the literature on green marketing and proposes a new conceptual framework of customer loyalty. It uses four constructsdperceived quality, perceived risk, customer trust, and customer loyaltydin the context of environmentally friendly electronics products in Thailand.

7p guernsey 28-12-2021 2 0   Download

The weld-induced martensitic transformation suppressed tension or promoted compression in the EB weld and heat affected zone (HAZ). A steep gradient of residual stress exists, with high tensile stress concentrated in a narrow region immediately outside the HAZ.

17p guernsey 28-12-2021 2 0   Download

In this paper "Nanostructured poly (3-octyl thiophene) films prepared by electrophoretic deposition", the preparation and properties of the nanoparticles of poly (3-octyl thiophene) (marked as P3OT) were presented. The EPD was adopted to prepare the polymer films. The properties of material were study by Raman, UV-Vis spectra, electron scanning microscopy (SEM), cyclic voltammetry (CV) and photocurrent measurements.

5p thienlangso 15-12-2021 4 0   Download

This study also showed comparatively higher solubility percentage in ‘BARI TPS-1’ tuber than the other local varieties, suggesting rapid disruption of swollen starch granule and faster starch degradation in TPS than the other local potato starches. Scanning Electron Microscope (SEM) images of starch granule showed rapidly ruptured and clumped starch granules in ‘BARI-TPS-1’ than the others, indicating TPS starch might obtain gelatinization temperature within a shorter period of microwave heating than that of the other varieties.

7p mudbound 10-12-2021 10 0   Download

To review, analyze and characterize the pregnancy and lactation-related osteoporosis (PLO) with vertebral fractures based on the extraction data in the previous studies. A comprehensive literature search of electronic databases including the PubMed, Embase and Web of Science was conducted from January 1st,1990 to December 1st, 2020.

11p vimackenziebezos 30-11-2021 1 0   Download

Though thermoelectric effect which enables to convert directly heat into electricity has been investigated long time ago, its practical applications have been still few due to the low efficiency. Material science focuses on developing the area to increase the performance is still under investigation.

10p vijichoo2711 04-06-2021 3 0   Download

Target of thesis: To develop a method that can simplify the determination of the thermodynamic parameters and XAFS spectra which base on the second-order cumulant only. In particular, this method can be applied for both theoretical calculations and experimental measurements in the XAFS method.

27p extraenglish 24-05-2021 16 0   Download

In this thesis, we research and fabricate AgNDs, AgNFs, AuNFs structures on silicon by chemical deposition and electrochemical deposition method for the main purpose of using as SERS substrate. To this target, we have studied the morphology, structure and some properties of the nanostructures produced.

26p extraenglish 24-05-2021 11 0   Download

Research objectives of the thesis: Clarification influence of the elements Na, Sr and Ba substituting for La/Ca and crystal size on the magnetic properties, phase transition and magnetocaloric effects of La0,7Ca0,3MnO3 materials. Found the materials for significant mmagnetocaloric parameters have potential for applications in magnetic refrigeration.Determine the effect of replacing Sr/Ba for Ca in La0,7Ca0,3MnO3 and Co substituting for Mn in La0,7Sr0,3MnO3 on their critical behavior as well as the ferromagnetic interactions order.

31p extraenglish 24-05-2021 5 0   Download

In recent years, optical orthogonal frequency division multiplexing (OOFDM) has emerged as a dominant research and development area in the field of high-speed optical communications. OFDM is a potential candidate as the most promising next-generation optical networks such as passive optical networks and optical transport networks, due to their simple configuration based on low cost, high speed data rates, high spectral efficiency, high quality of service and robustness against narrow band interference, frequency selective fading, and chromatic dispersion.

99p nguathienthan12 18-05-2021 8 2   Download

Chapter 9 - Cellular respiration: Harvesting chemical energy. This chapter presents the following content: Cellular respiration and fermentation are catabolic, energy-yielding pathways; cells recycle the ATP they use for work; redox reactions release energy when electrons move closer to electronegative atoms;…

69p tradaviahe19 29-03-2021 6 1   Download

To systematically review and assess the efficacy and safety of hydroxychloroquine (HCQ) for treating primary Sjogren’s syndrome (pSS). Methods: Five electronic databases (Pubmed, EMBASE, Web of science, Ovid, Cochrane Library) were searched for randomized controlled trials and retrospective or prospective studies published in English that reported the effect of HCQ on pSS.

13p vitennessee2711 02-02-2021 0 0   Download

In this thesis, we research and fabricate AgNDs, AgNFs, AuNFs structures on silicon by chemical deposition and electrochemical deposition method for the main purpose of using as SERS substrate. To this target, we have studied the morphology, structure and some properties of the nanostructures produced.

26p capheviahe27 23-02-2021 9 0   Download