Characterization

Bài giảng Xúc tác - Chương 3: Đặc trưng xúc tác (Catalyst characterization). Chương này cung cấp cho học viên những nội dung gồm: giới thiệu; các tính chất hóa lý tổng quát; các tính chất bề mặt và lỗ xốp; hàm lượng tâm hoạt tính xúc tác;... Mời các bạn cùng tham khảo!

11p mothuahoa 04-05-2024 5 2   Download

The research subject is the process of economic and mathematical modelling of time series characterizing the bitcoin exchange rate volatility, based on the use of artificial neural networks. The purpose of the work is to search and scientifically substantiate the tools and mechanisms for developing prognostic estimates of the crypto currency market development. The paper considers the task of financial time series trend forecasting using the LSTM neural network for supply chain strategies.

5p longtimenosee09 08-04-2024 10 1   Download

To achieve the aim, the first objective is preliminary experiments on preparation of polypropylene blends with silicone elastomer masterbatch and characterize by analysis of mass composition, mechanical properties, and dynamic mechanical properties to investigate any improvement of properties. The silicone elastomer masterbatch will then be substituted with propylene-maleic anhydride graft copolymer waxes or other compatibilizers.

147p runthenight05 01-03-2023 7 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 8 3   Download

Epigenetic defects (gain or loss of DNA methylation) of the human ICR1 11p15 domain result in two opposite foetal growth disorders (BWS and SRS) depending on which parental allele is affected. A few deletions within ICR1 have been reported in familial BWS cases with ICR1 gain of methylation, however the mechanism(s) of the DNA methylation defects at ICR1 remains largely unknown in most BWS and SRS patients.

83p runthenight07 01-03-2023 9 3   Download

The objectives of this research work are: Study the clay intercalation by organic dye and develop a process to produce nanoclay-dye pigment with better stability and good performance; Conduct structural characterization to verify the level of intercalation and stability of clay-dye pigment by using X-Ray diffraction (XRD) and Transmission Electron Microscopy (TEM); Investigate the thermal stability of clay dye pigment using Thermo Gravimetric Analysis (TGA) to reveal the effect of dye intercalation into the clay on improving thermal stability of organic dye; Compound the clay- pigment with ...

141p runthenight07 01-03-2023 5 3   Download

The research questions that guided the adopted research methodology are: 1 - What are the main governance and management practices associated with family business continuity identified and advocated by the lessons learned and best practice approach in the wider family business literature? 2 - What are the main sources of the practices, their provenance, and their theoretical underpinnings, if any? 3 - Is it appropriate to characterize family business lessons learned (local knowledge of what works) as best practices (universal knowledge of what works)?...

309p runthenight04 02-02-2023 4 2   Download

The objective of this study is to investigate the hotspot (fires and other thermal anomalies) detection and characterization product from the TET-1 satellite sensing system from the German Aerospace Centre (DLR). The satellite is envisioned, as part of a constellation of satellites, to provide detection and characterization of fires at a higher spatial resolution when compared to the current standard global coverage from the MODIS fire products.

112p runthenight04 02-02-2023 6 2   Download

The aims of the study "Characterising microbial and neuroimmune interactions in a mouse model of autism" are threefold: i) To characterize the influence of the R451C mutation on caecal enteric neuron organization; ii) To characterize the influence of the R451C mutation on caecal patch macrophage density and morphology; iii) To assess for alterations in gut microbes in different regions of the GI tract in the NL3R451C mouse model of autism.

83p runthenight04 02-02-2023 8 1   Download

The thesis investigates the growth promoting effects of plant growth promoting bacteria (PGPB) in chickpea and wheat. Three main topics covered are: 1) Isolating local Plant Growth Promoting Bacteria; 2) Screening and characterization of isolates; 3) Assessment and identification of the selected strains.

107p runthenight04 02-02-2023 11 4   Download

This thesis examines the influence of market (Narver & Slater, 1990), learning (Sinkula, Baker, & Noordewier, 1997), and entrepreneurial orientation (Lumpkin & Dess, 2001) as sources of competitive advantage in rapidly growing small-to-medium enterprises (SMEs). The present thesis incorporates two studies (Study 1 and Study 2), utilizing a sequential explanatory design, which is characterized by undertaking quantitative data collection and analysis, prior conducting qualitative research (Cresswell, 2003).

391p runthenight04 02-02-2023 7 4   Download

The purpose of this study is to discover and characterize speaking skills, some common mistakes and common points of students when learning speaking skills, as well as suggest suitable techniques for students to improve their skills in which research focuses on finding the reality of the first-five major problems in English learning to speak English and giving them suggestions for better communication. It is expected that first-year English majoring students at HPU can improve their English speaking skills.

57p linyanjun_2408 21-04-2022 55 6   Download

The goal of the thesis: Determine the time of harvesting the natural growing Dangshen roots; research on inulin extraction, purification, and characterization of inulin molecular structure in Dangshen tubers naturally growing in Lac Duong district, Lam Dong province; research on spray drying to create Dangshen powder and experiment to create a synbiotic powder from spray-drying powder, oriented application in food.

33p guitaracoustic09 14-01-2022 29 1   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 27 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 19 4   Download

The thesis consists of 135 pages, including 21 tables of data, 50 figures and 144 references. The structure of the thesis consists of: Introduction: 4 pages; Overview: 32 pages; Experimental part: 13 pages; Results and discussion: 63 pages; Recent contributions of the thesis: 1 page; The list of published works: 2 pages; References: 18 pages. There is also an appendix containing the spectrums and diagrams that measure the characteristics and properties of components and AG/CS/LOV, AG/CS/LOV/ginsenoside Rb1 composites with 11 pages.

30p prisonbreak123 21-05-2021 31 3   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 16 4   Download

The thesis focused on the synthesis of Mn, Ce, C doped ZnO nanoparticles materials and doped ZnO with multi-layered carbon nanotube nanocomposite materials and assessed their photo-oxidative potentiality through photocatalytic reactions of methylene blue (MB) decomposition in aqueous solution under visible light.

30p capheviahe27 23-02-2021 20 5   Download

The main objective of this study was to characterize the ecology of the Indochinese silvered langur at the Chua Hang Karst Mountain. The findings from this study add important information needed for the conservation of the Indochinese silvered langur in Vietnam.

28p capheviahe26 25-01-2021 15 3   Download

Synthesization and structural characterization of nano La2O3, nano CeO2, nano La2O3- CeO2 on laterite by sol - gel combustion method using gelatin precursor; investigation the adsorption and desorption capacity of arsenic, phosphate on La2O3 nanomaterials, CeO2 nanomaterial, mixed oxides La2O3-CeO2 nanomaterial and La2O3-CeO2 nanomaterials on laterite.

28p capheviahe26 25-01-2021 20 4   Download