Structural characteristics

The paper proposes an efficient structure of RF Energy Harvesting (RFEH) system that can improve efficiency of the system. The paper analysis and indicate relationships between characteristics of the RFEH system such as: center frequency, bandwidth, Q factor, passive gain, and number of rectifier stages.

10p visergeyne 18-06-2024 0 0   Download

In this study, a series of CuWO4/g-C3N4 composites were synthesized using a facile construction method. The structural characteristics of the composites were examined using various techniques, including XRD, SEM, SEM-EDS, FT-IR, and UV-DRS.

10p viambani 18-06-2024 2 1   Download

In this work, we have shown that the addition of Zn to nanocrystalline nickel ferrite enhanced its H2 sensing properties, such as sensitivity, response time, and stability. This is explained due to the formation of defects and oxygen vacancies in the crystal structure due to the substitution of Zn ions in place of Ni ions. These defects generated more active sites for H2 gas to interact with, resulting in improved sensing performance.

9p viambani 18-06-2024 1 1   Download

This paper introduces a new press structure that utilizes a double crank mechanism to enhance productivity and efficiency for the stamping process. By adjusting the positions between the component links, the dynamic characteristic of the ram can be modified, optimizing the performance and improving operations of the system.

8p viambani 18-06-2024 1 1   Download

Ebook Advanced software testing (Vol. 3, 2nd edition) presents the following content: Chapter 1 the technical test analyst’s tasks in risk-based testing, chapter 2 structure-based testing, chapter 3 analytical techniques, chapter 4 quality characteristics for technical testing, chapter 5 reviews, chapter 6 test tools and automation, chapter 7 preparing for the exam.

481p zizaybay1103 29-05-2024 4 2   Download

Ebook "Advances in geophysic - Volume 35: Seismological structure of slabs" provides an overview of the progress made in illuminating the properties of deep slabs and the surrounding mantle, since the introduction of the plate tectonics model to the earth sciences 25 years ago. The thermal and chemical characteristics of the subducted lithosphere are determined through thermal and petrological modelling, with seismological observations providing critical constraints on model parameters.

193p giangdongdinh 28-05-2024 3 2   Download

Part 2 book "Electric power generation, transmission and distribution" includes content: Transmission line reliability methods, high voltage direct current transmission system, transmission line structures, advanced technology high temperature conductors, power system loads, distribution system modeling and analysis, power system operation and control, hard to find information (on distribution system characteristics and protection),... and other contents.

355p dianmotminh01 20-05-2024 7 3   Download

At 108 Military Central Hospital, many patients had multidisciplinary treatment of auricular keloids, however, there were some cases treated thoroughly with 1 surgery and no recurrence of scarring, producing satisfactory surgical results. Therefore, we conduct research with the objective: to contribute to show clinical characteristics of auricular keloids that can be treated surgically and solutions for auricular keloids that were surgically operated in a central hospital of highest line as a reference source for our colleagues.

8p vicarlos 16-05-2024 1 0   Download

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 2 1   Download

In this study, we synthesized magnetic activated carbon (MAC) derived from Litsea glutinosa seeds, which was applied to eliminate methylene blue and nickel ions in the aeration tank of the biological treatment system. Structural characteristics and adsorption properties of MAC were studied. The obtained results revealed that the removal efficiency of these pollutants significantly improved as a combination of MAC and activated sludge, especially in the case of nickel ions removal.

7p dianmotminh02 03-05-2024 2 1   Download

This paper presents a new design of Ge20Sb5Se75 large-solid-core- square lattice photonic crystal fiber (PCF) with the first ring of air hole near the core removed. Using the full vector finite element method for anisotropic perfectly matched layers, we numerically examine the dispersion characteristics of the PCF as a function of the wavelength in the mid-infrared range.

10p dianmotminh02 03-05-2024 3 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 1 1   Download

Ebook "Confectionery science and technology" examines both the primary ingredients and the processing technology for making candies. In the first section, the chemistry, structure, and physical properties of the primary ingredients are described, as are the characteristics of commercial ingredients. The second section explores the processing steps for each of the major sugar confectionery groups, while the third section covers chocolate and coatings.

542p tracanhphuonghoa1007 22-04-2024 5 3   Download

Ebook "Ionic liquids for better separation processes" discusses capital separation processes of industrial interest and explores the potential for substantial improvement offered by a promising class of substances: ionic liquids. These low melting point salts, with their unique characteristics, have been gaining relevance in the field of separation through a variety of approaches.

235p tracanhphuonghoa1007 22-04-2024 4 3   Download

Ebook "Porosity: Establishing the relationship between drying parameters and dried food quality" provides a comprehensive overview of porosity's effects on dried food quality. The factors influencing porosity during the various drying methods are explored in depth, as well as porosity's overall effect on food properties. The chemical reaction and stability of porosity are also covered, including sensory and mechanical properties. The work looks closely at the relationship between drying conditions, pore characteristics, and dried food quality.

81p tracanhphuonghoa1007 22-04-2024 2 2   Download

This study aims to evaluate the effect of fire on soil properties at Zone A5, Tram Chim National Park, Tam Nong district, Dong Thap province. Findings indicated that soil type was acid sulfate, soil structures were clay, clay-silt and silt-clay. pH was low while moisture was high. Electrical conductivity and bulk density were in the tolerance range for the Eleocharis community.

9p viohoyo 25-04-2024 5 2   Download

Part 1 book "Transformer engineering - Design, technology, and diagnostics" includes content: Transformer fundamentals, magnetic characteristics, impedance characteristics, eddy currents and winding stray losses, stray losses in structural components, short circuit stresses and strength, surge phenomena in transformers.

369p dianmotminh00 22-04-2024 6 3   Download

Part 2 book "Small wind turbines for electricity and irrigation" includes content: Engineering of the support structures for wind turbines; probability distribution of the wind speed and preliminary design of wind power installations; sizing energy storage systems; design of wind pumping systems; unconventional wind driven machines; aerodynamic characteristics of blunt bodies and airfoils.

184p dianmotminh00 22-04-2024 5 3   Download

The study’s main focus is on how much or if any leverage a corporation employs. The article examines the capital source composition of firms providing logistics services listed on the Vietnamese stock market. From there, we are able to recognize how much an organization depends on external funds as well as how much initiative it takes from internal capital sources.

11p longtimenosee09 08-04-2024 4 1   Download

Improvement of scientific-theoretical approaches and the principles to the analysis of digital economic space, systematization of structural elements of digital economy to define characteristics. A research object - economy of digital space at the present stage. Systematization of current trends of development of digital economy, ideas of structural elements of digital economy acts as a subject.

8p longtimenosee09 08-04-2024 0 0   Download