Hardness

Steel slag, one of the huge industrial waste sources, which has many outstanding advantages (hardness, roughness, angularity, and abrasion resistance) has been used as an aggregate in asphalt concrete to bring many benefits.

7p viengfa 28-10-2024 2 1   Download

In this study, the experiments were conducted in various heating temperatures, holding times and cooling mediums for specimens made of S45C steel. Then, the relationship between the microstructure and the hardness of the steel was examined.

10p vibecca 01-10-2024 1 1   Download

In this article, the authors have researched and evaluated the effectiveness of load transfer according to deflection through the application of the 3D finite element method. The model utilizes material parameters and actual airport hard pavement structures and calculates for many types of aircraft commonly operating in Vietnam.

12p viyoko 01-10-2024 4 1   Download

Ordered mesoporous carbon materials using MCF silica as hard template (OMC(MCF)) were synthesized. The synthesized OMC(MCF) materials were characterized by different techniques such as XRD, TEM, BET.

6p vikwong 29-09-2024 1 1   Download

In this study, instrumented indentation testing was conducted at room temperature for the investigation of the effect of strain rate on the hardness and yield strength in the weld zone of a commonly used structural steel, SM520.

9p vifilm 24-09-2024 2 1   Download

In this paper, the continuous stiffness measurement (CSM) indentation is employed to investigate fatigue mechanical properties of structural steel under cyclic loading. For this purpose, several representative analytical approaches were introduced to estimate the basic mechanical properties including Young’s modulus and indentation hardness from the characteristics of the loading/unloading curves.

11p vifilm 24-09-2024 2 1   Download

Capacitive Deionization (CDI) has emerged as a promising and environmentally sound solution for addressing pressing water treatment challenges. This critical review meticulously examines the design, operational considerations, and performance metrics of CDI systems, particularly highlighting their significance in environmental applications under real-world conditions for handling different water sources such as groundwater, surface water, sea water.

22p vifaye 20-09-2024 1 1   Download

Cervical tooth wear is a common oral health issue that often leads to the loss of tooth structure integrity, making the teeth sensitive, prone to , affecting the dental pulp, and causing aesthetic concerns. To determine the prevalence and severity of cervical tooth wear in young individuals aged 18-25 and examine the association between brushing habits and cervical tooth wear.

6p vifaye 20-09-2024 2 1   Download

natural fiber for the construction of hybrid bio-composites. In the current research project, a thorough analysis of the use of soy-PF resin for the creation of composites reinforced with jute was conducted. A novel and practical cutlery material was created after the mechanical properties were evaluated and optimized. In order to study the value addition of these newly proposed biocomposite materials as an ecological alternative in terms of natural resources versus synthetic resources, variables such as hardness, cytotoxicity, and degrading qualities of composites were also explored.

9p dianmotminh02 03-05-2024 6 2   Download

Luận văn Thạc sĩ Hóa học "Nghiên cứu chế tạo vật liệu nano silica rỗng từ chất nền hydrotalcite tổng hợp" với mục tiêu nhằm tổng hợp vật liệu nano silica rỗng với độ dày vỏ được kiểm soát bằng phương pháp hard-template nhằm ứng dụng trong lĩnh vực cách nhiệt.

86p kimphuong17 29-07-2023 27 8   Download

Bài giảng Cấu trúc máy tính: Chương 5 được biên soạn gồm các nội dung chính sau: Tổng quan về bộ nhớ; ROM (Read Only Memory); RAM và công nghệ RAM; Công nghệ RAM hiện đại; Bộ nhớ ngoài – Floppy Disk; Bộ nhớ ngoài – Hard Disk Drive. Mời các bạn cùng tham khảo!

28p hoangnhanduc09 04-05-2023 11 5   Download

Once entirely the domain of space-borne applications, the effects of high energy charged particles on electronics systems is now also a concern for terrestrial devices. Reconfigurable components such as FPGAs are particularly vulnerable to radiation single event effects (SEU) as they carry a large amount of memory within a relatively small amount of circuit area. This thesis presents a Silicon on Insulator (SOI) based configuration memory system in a radiation hard reconfiguration system.

101p runthenight05 01-03-2023 8 3   Download

Model Predictive Control (MPC) refers to a class of algorithms that optimize the future behavior of the plant subject to operational constraints. The merits of the class algorithms include its ability to handle imposed hard constraints on the system and perform on-line optimization. This thesis investigates design and implementation of continuous time model predictive control using Laguerre polynomials and extends the design approaches proposed in to include intermittent predictive control, as well as to include the case of the nonlinear predictive control.

162p runthenight07 01-03-2023 9 4   Download

In the work "Master's thesis of Science: User delay tolerance - aware edge node placement optimization for cost minimization", we review the related works and identify the research gaps in Chapter 2. Then, we formulate our problem in Chapter 3 and prove the NP-hardness of the problem in Chapter 4. Base on our problem formulation, we provide a suit of solutions in Chapter 5. After that, we do an comprehensive evaluation on our proposed methods in Chapter 6. Finally, we summarise our work in Chapter 7.

64p runthenight04 02-02-2023 7 3   Download

Phần 2 cuốn giáo trình Thí nghiệm Vật liệu học cung cấp cho người đọc các kiến thức: Microstructure analysis of graphite - cast iron, hardness testing and quenching steel process, tempering quenched – steel. Mời các bạn cùng tham khảo nội dung chi tiết.

27p unforgottennight01 11-08-2022 20 6   Download

Bài viết Một cách giải bài toán suy diễn hậu nghiệm trong mô hình chủ đề trình bày bài toán suy diễn hậu nghiệm này thường đưa về một bài toán tối ưu không lồi thuộc lớp bài toán NP-Hard. Để giải bài toán suy diễn hậu nghiệm trong mô hình chủ đề, có nhiều phương pháp đã được đề xuất như: Phương pháp biến phân Variational Bayes (VB), collapsed variational Bayes (CVB) hay phương pháp collapsed Gibbs sampling (CGS).

3p vimegwhitman 10-06-2022 19 2   Download

Bài toán clique lớn nhất (Maximum clique problem) là bài toán tối ưu tổ hợp được ứng dụng trong nhiều lĩnh vực như mạng xã hội, tin sinh học, tài chính, lập lịch và đã được chứng minh là bài toán thuộc lớp NP-Hard. Nghiên cứu này đề xuất giải thuật bầy ong giải bài toán clique lớn nhất dựa trên hệ thống dữ liệu thực nghiệm chuẩn DIMACS gồm 37 bộ dữ liệu thực nghiệm.

9p viedison 13-04-2022 29 2   Download

Herein, a combined analysis of Global Navigation Satellite System-derived strain rate maps, in accordance with recent seismicity, was presented to reveal that the N-S extension is accommodated primarily by strike-slip faulting of the İzmir-Balıkesir Transfer Zone (İBTZ), where a counter clockwise rotation (~25–100°/Myr) along the vertical axis is dominant. The results indicated that strike-slip segments within the İBTZ show variable transport sense and amount of slip along them, and they connect by hard linkage relay ramps with the dip to oblique slip normal faults.

18p tanmocphong 29-01-2022 19 1   Download

Uterine cervical cancer (UCC) was the fourth leading cause of cancer death among women worldwide. The conventional MRI hardly revealing the microstructure information. This study aimed to compare the value of amide proton transfer-weighted imaging (APTWI) and diffusion kurtosis imaging (DKI) in evaluating the histological grade of cervical squamous carcinoma (CSC) in addition to routine diffusion-weighted imaging (DWI).

10p vielonmusk 21-01-2022 22 1   Download

Bài giảng môn Tiếng Anh lớp 5 năm học 2021-2022 - Unit 8: Lesson 2 (Trường Tiểu học Thạch Bàn B) được biên soạn với mục tiêu nhằm giúp học sinh làm quen với từ vựng: generous, hard working, clever, gentle, kind; mẫu câu: What’s___ like ? - He’s/She’s___; hỏi và trả lời được các câu hỏi về nhân vật trong truyện như thế nào;... Mời quý thầy cô và các em học sinh cùng tham khảo chi tiết nội dung bài giảng!

15p maclangthien 24-01-2022 8 2   Download