Preparation materials

Photoluminescent composites consisting of a photoluminescent material dispersed in a suitable matrix have been applied in many applications, such as light-emitting diodes, solar concentrators, and anticounterfeiting inks. In this study, we have demonstrated a one-step method to prepare homogeneous composites by inducing the formation of in-situ photoluminescent centers in a stable matrix.

8p viaburame 14-03-2025 0 0   Download

The development of flexible electronic devices, particularly flexible and bendable energy storage devices, has catalyzed significant interest in the research of flexible composite materials. In this study, conductive paper membranes were synthesized by polymerizing polypyrrole (PPy) on the surface of cellulose fibers.

14p viaburame 14-03-2025 3 1   Download

In this study, spinel ferrite nanoparticles CoFe2-xLaxO4 (x = 0, 0.025, and 0.05) were successfully synthesized via a simple co-precipitation method using a 5% NaOH solution as a precipitating agent. The physicochemical properties of the materials, annealed at 850 °C for one hour, were characterized using powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and vibrating-sample magnetometry (VSM) at room temperature.

10p viling 11-10-2024 3 1   Download

The research focuses on the composition of a hard capsule formula containing the extracts of Houttuynia cordata, Morus alba, and Carica papaya as well as the development of testing standards for prepared hard capsules. Materials and methods: the ratio of adsorbents and fillers in the formula was investigated so that the granules had low moisture, a suitable flow rate, and the appropriate apparent density for packaging.

9p vinara 11-01-2025 1 1   Download

The process of mechanical root canal preparation creates smear layer. The smear layer can prevent the penetration of intracanal medicaments into dentinal tubules and influence the adaptation of filling materials to canal walls. The purpose of this study is to compare the smear layer removal ability of root canal irrigation methods with chelat solution.

6p viharuno 03-01-2025 10 2   Download

Actual Test 1 - Finish TOEIC 1000 LC thread is great preparation materials for you to do before participating in the TOEIC exam. In addition the document also sets out the types of questions corresponding to the actual TOEIC questions, meet the needs and qualifications of beginner students through the explanation of the main content and the presentation of the section important stepwise.

177p dat93prohn 11-04-2016 493 99   Download

This document provides a variety of practice material to help you prepare for English proficiency test C, managed through the Internet, and develop your English skills. These include free sample questions, practice tests and skill building interactive programs, and detailed advice and information to learn more about English test certificate C.

428p haidang_1312 02-12-2009 2927 1416   Download

Welcome to the section that really makes this book unique. In my opinion, one of the best ways to prepare for the DB2 9 Fundamentals certification exam (Exam 730) is by answering sample questions that are presented in the same format that you will see when you take the certification exam. In this section you will find 150 sample questions, along with comprehensive answers for every question. (It's not enough to know which answer is correct; it's also important to know why the answer is correct and why the other choices are wrong!)...

72p vanchien054 27-11-2010 235 59   Download

This is the 3500 question test certificate B to refer your readers. They settled in the south-east of the island, became the majority and do a variety of languages ​​other natives on the island, the Celts, come dangerously close to oblivion. English is widely used due to the influence of U.S. and UK in the fields of military, economic, science, computer science, politics and culture.

503p newbievnx 18-03-2011 745 430   Download

Developing products and services; communicating and interacting with foreign business partners; screening and selecting foreign distributors and other partners; negotiating and structuring international business ventures; interacting with current and potential customers from abroad; preparing for overseas trade fairs and exhibitions; preparing advertising and promotional materials.

30p theanhdth 10-10-2014 61 7   Download

The specific objectives of this study are: 1. To conduct a literature review on carbon-based hydrogen storage electrodes and direct proton absorbance in various forms of carbon; 2. To prepare and characterise activated carbon samples with proper porosity for the present application; 3. To manufacture and characterise a range of composite materials containing carbon material and a proton-conducting medium such as nafion in various levels of hydration 4. To fabricate a number of membrane-electrode-assembly (MEA) from the composite materials;…

264p runthenight05 01-03-2023 10 3   Download

The focus of this study is to investigate its optical and conductive properties under different conditions of doping environments, temperature and polymerization conditions. Optical characterization technique such as UV-Visible spectroscopy is developed to carry out the investigation. The developed nanofibers have been demonstrated to possess optical and conductive properties to be dependent on doping variables. Study of these optical properties could prove very useful in the development of electrochromic devices and gas sensors.

103p runthenight07 01-03-2023 12 3   Download

The recent advances in the study of the unique capabilities of monolayer crystals had predicted piezoelectricity in two-dimensional (2D) group IV chalcogenides which are not present in their bulk forms. In this study, the predicted piezoelectric properties of was experimentally explored through Piezoelectric Force Microscopy (PFM). Tin Sulfide (SnS), Tin Selenide (SnSe), Germanium Sulfide (GeS), were exfoliated from their bulk forms by the top down methods of liquid sonication, while and Tin Disulfide (SnS2) mechanically exfoliated by tape.

82p runthenight04 02-02-2023 11 3   Download

The purposes of the dissertation: Preparation of low molecular weight sodium alginate from brown algae in Nha Trang Bay which has anticoagulant activity as a raw material for functional food production.

36p tunelove 11-06-2021 26 3   Download

Goals of the thesis: Preparing of zirconia/silane combined films on steel subtrate for organic coatings to replace phosphate and chromate pretreatment; Proposing the mechanism of film formation process and assessing characteristics of morphology, composition, electrochemical properties and bonding of the zirconia/silane film.

27p extraenglish 24-05-2021 24 5   Download

Objectives of the dissertation: Research on the degradation process of PE films containing prooxidant additives and recycled polyethylene. After that, preparing plant polybags with different time of degradation.

27p extraenglish 24-05-2021 31 4   Download

The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.

26p extraenglish 24-05-2021 31 2   Download

Research purpose: Preparation and characterization of nanocarrier systems for drug delivery system based on the modification of dendrimer (PAMAM) with biocompatible surfaces such as PNIPAM and PAA to improve the capping cisplatin.

30p extraenglish 24-05-2021 29 4   Download

Research purpose: Preparation and characterization of nanocarrier systems for drug delivery system based on the modification of dendrimer (PAMAM) with biocompatible surfaces such as PNIPAM and PAA to improve the capping cisplatin.

30p capheviahe27 23-02-2021 18 4   Download

Find the optimal technology parameters and components for fabricating Fe-based nanomaterials using high-energy ball milling method; clarify the relationship between technological conditions with the structural characteristics and magnetic properties of fabricated materials; assess the applicability of Fe, Fe-Co nano materials in fabricating nanocomposite magnets and magnetic induction heating.

24p capheviahe26 25-01-2021 20 2   Download