Metal

In this research, in an attempt to make use of the kaolin resources in Vietnam, we present a synthetic process of zeolite A via hydrothermal from kaolinite, together with the modification process of zeolite A using different metallic cations. The characteristics of the prepared zeolite LTAs such as chemical composition and crystalline structure, as well as their catalytic activity in the methanation reaction of carbon dioxide (CO2) to methane (CH4) were extensively investigated.

8p dianmotminh02 03-05-2024 5 1   Download

This modeling is performed on an experimental data set of complexes, where the metal ions of these complexes include transition ion metals and lanthanide ion metals. We use these models to develop a series of new thiosemicarbazone and their complexes; simultaneously, the complexes are worked out the stability constants from the novel models.

9p dianmotminh02 03-05-2024 6 2   Download

In recent times many research activities have been carried out to prove the metal ion detection ability of Schiff bases. [13,14] In the present study, a new Schiff base has been synthesized from 5-bromo-2- hydroxybenzaldehyde and naphthalene-1,8-diamine and it is complexated with Co(II), Ni(II), Cu(II) and Zn(II) ions. The biological application of all the compounds has been analyzed and metal ions recognition property of the Schiff base has also been studied.

16p dianmotminh02 03-05-2024 7 1   Download

This article, we present a thorough and straightforward hydrothermal method towards the production of reduced graphene oxide templated MIL-53(Fe) hybrids RGO@MIL-53(Fe). The structural characteristics of created hybrids were identified by using BET, FESEM, powder X-ray diffraction, and FTIR techniques. Methylene blue (MB) dye (a model water pollutant) was used to evaluate H2O2-assisted photo-catalytic efficiency of RGO@MIL-53(Fe).

9p dianmotminh02 03-05-2024 2 1   Download

Việc sử dụng ánh sáng nhân tạo để tập trung cá trong khai thác thủy sản đã tồn tại hàng ngàn năm và dần được phát triển trở thành một trong những phương pháp tiên tiến, hiệu quả và quan trọng đối với nghề lưới chụp khai thác hải sản ở Việt Nam. Nghiên cứu này đánh giá hiệu quả ứng dụng đèn đi-ốt phát quang (LED) so với việc sử dụng đèn cao áp metal halide (MH) trong nghề lưới chụp khai thác hải sản.

10p vijaychest 24-04-2024 9 4   Download

Mục tiêu nghiên cứu của đề tài "Nghiên cứu công nghệ in 3D kim loại bằng phương pháp FDM và thiêu kết" nhằm nghiên cứu công nghệ in 3D kim loại bằng phương pháp FDM, thuê kết và hướng dẫn sử dụng máy in 3D kim loại (Metal X); Vận hành các máy in, rửa và thiêu kết để cho ra sản phẩm đạt chất lượng; Khả năng sử lý và khắc phục các sự cố khi vận hành máy.

103p boghoado07 19-01-2024 12 6   Download

Compare to other documents, our study was for the first time validated the quality criteria of ICP-MS for analyzing nineteen metal levels in wastewater samples. The application of this method was then tested by analyzing nineteen metal levels in twenty-three wastewater samples in the Tham Luong Canal in Ho Chi Minh City. Based on these results, the correlation of the concentration of these metals in wastewater samples was determined.

7p viengels 25-08-2023 7 3   Download

Bài viết Cấu trúc nano kim loại tạo hiệu ứng plasmonic có khả năng hấp thụ hai dải bước sóng ứng dụng cho cảm biến chiết suất trình bày các nghiên cứu về cấu trúc kim loại - điện môi - kim loại (metal-dielectric-metal - MDM) tạo hiệu ứng cộng hưởng plasmonic nhằm ứng dụng cho cảm biến chiết suất có độ nhạy cao và hấp thụ tuyệt đối ánh sáng ở vùng bước sóng hồng ngoại gần.

12p vifriedrich 25-08-2023 4 3   Download

In this study, the combination of Fe(III) and Ni(II), Cu(II), or Mn(II) metal salts bound to organic bridges were synthesized based on thermal method solvent in the presence of DMF. The structural properties of the materials were analyzed based on modern physicochemical methods (XRD, FT-IR, SEM, and BET).

8p vidoctorstrange 06-05-2023 8 3   Download

Single electron transistor (SET) is a key element in current research area of nanoelectronics which can offer nano-feature size, low power consumption and high operating speed. SET could be promising alternative for MOSFET in the future.

7p vidoctorstrange 06-05-2023 10 2   Download

Nối tiếp phần 1, phần 2 của tài liệu "Hướng dẫn sử dụng SolidWorks trong thiết kế 3 chiều" tiếp tục trình bày các nội dung chính sau: Công cụ Linear Patterns, Circular Pattern; Tạo tấm Sheet metal; Bản vẽ lắp; Bản vẽ kĩ thuật; Ví dụ tạo khuôn đúc;... Mời các bạn cùng tham khảo để nắm nội dung chi tiết.

83p vitomriddle 03-03-2023 15 6   Download

This study investigated trace essential metals (Cu, Zn and Cr) and non-essential metals (Pb, Cd and Hg) in water, sediment and tissues of water spinach, snake head fish and swamp eel from the Saigon River. Sampling was conducted from January to December 2004 at three sites. Three water and sediment samples, edible parts of twenty water spinach (Ipomea aquatica) samples (leaves and stems), twenty snake head fish (Channa striata) and twenty swamp eels (Monopterus albus) were collected at each site.

148p runthenight07 01-03-2023 9 3   Download

The overall aim of this research project is thus to study the concept of integrating a solid-state metal hydride electrode and a unitised regenerative fuel cell into a single system, and investigate its performance as a reversible store for electrical energy.

148p runthenight07 01-03-2023 7 3   Download

The main aim of this study is to investigate utilising root-like architectures to improve the interfacial strength of pin-integrated hybrid composite-metal structures. Joints are critical elements in aircraft structures and require special consideration due to their vital role in the structural integrity of airframes. Although bonded and bolted systems are used commonly in engineering applications, pinning technologies have shown tremendous potential for hybrid joints.

198p runthenight04 02-02-2023 4 1   Download

This Master's thesis aims to document the research process into the synthesis of 2D AlPO4 via a liquid metal synthesis pathway. The synthesised 2D AlPO4 will then undergo qualitative and structural analysis, after which it will be characterised via advanced techniques to determine piezoelectric characteristics, as well as the exploration of the ability of the synthesised material to absorb heavy metals.

114p runthenight04 02-02-2023 5 2   Download

The main aim of this investigation was to develop a low-cost solution to remove trace metals from the aqueous phase using biochar. This study investigated (i) the effect of giant reed-based biochar produced at varying temperatures in the treatment of aqueous solutions polluted with lead; and (ii) how the production of biochar at different temperatures affected its adsorption capacity for lead from the aqueous phase.

116p runthenight04 02-02-2023 13 4   Download

The thesis consists of five chapters which aim to investigate the mechanical properties and fabricating processes of different biomedical Ti scaffolds, with the structure presented: Chapter 1 is a generalized introduction to the content of the thesis, including the background, scopes and objectives of the research. In Chapter 2, a comprehensive literature review is presented. Chapter 3 presents the design and fabrication of the Ti scaffolds. In Chapter 4, the mechanical properties of the fabricated Ti scaffolds were analyzed.

109p runthenight04 02-02-2023 5 3   Download

Vietnam has many traditional copper casting craft villages from the North to the South, which resulting in large amounts of copper smelter slag containing Zn, Cu, Al, etc. In this study, zinc oxide and copper metal have been recovered from brass smelter slag (71.80 wt.% ZnO and 10.32 wt.% CuO) by a hydrometallurgical process.

8p vispyker 16-11-2022 4 1   Download

Vật liệu khung hữu cơ kim loại (Metal organic frameworks) (thường được kí hiệu là MOFs) thuộc nhóm vật liệu xốp lai hữu cơ-vô cơ quan trọng trong những năm gần đây. Trong thập kỉ qua, vật liệu MOFs được các nhà khoa học quan tâm trên bình diện lý thuyết cũng như ứng dụng thực tiễn. Đề tài "Nghiên cứu tổng hợp vật liệu Fe3O4@ZIF-8 và ứng dụng" tiến hành nghiên cứu biến tính của vật liệu ZÌ-8 bằng oxit sắt có hoạt tính quang hóa.

56p unforgottennight02 20-08-2022 18 5   Download

The thesis "Strain Localization and Member Ductility" primarily intends to provide new insights into the mechanism of localized plastic strain, also known as necking, in different types of metallic materials, including mild steel Q235, high strength low alloy steel HSLA350, and aluminum alloy AL6061.

354p runordie3 06-07-2022 8 2   Download