Decomposition

To investigate effects of decomposition roasting temperature and necessary acid amount for decomposition, ore concentrate with TREO content about 39% was used as original ore concentrate (three samples named as Q3, Q5 and Q6), the rates of ore and acid (by chemical equivalence) were 1/1.6, 1/1.4 and 1/1.2, decomposition roasting temperatures were changed in a range of 400 – 420 oC, roasting time was 2h.

6p vidumbledore 19-01-2023 5 1   Download

In the last decades, the concern with the environmental impacts brought by the uncontrolled disposal of non-biodegradable plastic materials encouraged numerous researches aiming at the reduction of the decomposition period as well as the toxicity of polymer residues.

9p vihermione 06-01-2023 2 1   Download

In this paper, we present a reduced-order modeling approach to study the Molten Salt Fast Reactor (MSFR). Our approach is nonintrusive and based on the proper orthogonal decomposition method. We include adaptivity in selecting the sampling points both in time and parameter space. Steady-state and transient analysis were both performed using the developed models.

14p vironald 15-12-2022 4 1   Download

The Ni/SiO2 system is one of the most interesting to produce COx-free H2 and valuable carbon nanofibers (CNFs) by the catalytic decomposition of CH4. SiO2 is one of the most effective support while Ni catalyst displays long life and high activity.

12p vironald 15-12-2022 4 1   Download

This paper presents the results of the parameter sensitivity assessment of the DNDC (Denitrification - Decomposition: Decomposition - Denitrification) model when calculating N2O greenhouse gas emissions from maize cultivation.

10p viwmotors 13-12-2022 11 1   Download

Although awareness and treatment rates of hypertension have significantly improved in recent years, the prevalence of undiagnosed and untreated hypertension remains a major public health concern for Indian policymakers.

16p viferrari 28-11-2022 6 1   Download

Childhood obesity has become a significant public health issue worldwide. Socioeconomic status is among its key determinants. This study examined the socioeconomic inequality in different phenotypes of childhood obesity at the national level in Iran.

9p viferrari 28-11-2022 16 1   Download

Lecture Introduction to Machine learning and Data mining: Lesson 10. This lesson provides students with content about: regularization; revisiting overfiting; the bias-variance decomposition; bias-variance tradeoff; regularization in ridge regression; regularization in lasso;... Please refer to the detailed content of the lecture!

25p hanlamcoman 26-11-2022 5 1   Download

Nanometric composite TiO2, TiO2-SiO2 (TS10) and AgTiO2-SiO2 (A4TS10) powder photo-catalysts have been synthesized via sol-gel assisted with hydrothermal treatment method and employed for aqueous phenol decomposition under sunlight irradiation. Characteristics of those samples are analyzed by using X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FT-IR), Energy dispersive X-ray (EDX), Transmission electron microscope (TEM), Brunauer-EmmettTeller (BET) surface area and UV-Vis absorption method.

5p vijaguar 16-11-2022 11 0   Download

ZnO's ability to decompose organic substances is receiving much attention in multiple applications. ZnO has a broad spectrum of light absorption natural or synthetic, for a wide range of wavelengths, and is an important material with excellent properties, environmentally friendly, nontoxic, inexpensive, and high redox potential features with simple manufacturing methods.

8p vispyker 16-11-2022 5 0   Download

Despite the high rate of teenage pregnancy in Nigeria and host of negative medical, social and economic consequences that are associated with the problem, relatively few studies have examined socioeconomic inequality in teenage pregnancy. Understanding the key factors associated with socioeconomic inequality in teenage pregnancy is essential in designing effective policies for teenage pregnancy reduction.

11p viferrari 29-10-2022 2 1   Download

Ebook "An Introduction to Quantum computing" provide readers with content about: introduction and background; linear algebra and the dirac notation; qubits and the framework of quantum mechanics; a quantum model of computation; superdense coding and quantum teleportation; introductory quantum algorithms; algorithms with superpolynomial speed-up;...

284p tieuduongchi 07-10-2022 3 2   Download

The thermogravimetric method was used to determinate the kinetic parameters as the activation energy, the pre-exponnential factor and the order of reaction. The three constituents of balsa (i.e. hemicellulose, cellulose and lignin) were well identified and the decomposition temperature region well characterized. The presence of a large quantity of water affects the thermal decomposition behaviour of wood inducing notably a maximal degradation temperature.

4p vilexus 30-09-2022 5 1   Download

Bài viết Thiết kế bộ tiền mã hóa cho kênh truyền MIMO đường xuống với nhiều thiết bị đầu cuối này nghiên cứu kỹ thuật mã hóa ZF cho kênh truyền quảng bá. Tại trạm gốc, kỹ thuật tiền mã hoá ZF dựa trên cơ sở SVD (singular value decomposition) được sử dụng để cực đại dung lượng hệ thống với các điều kiện ràng buộc tổng công suất phát.

5p vikoenigsegg 29-09-2022 9 1   Download

This paper introduces the expectation maximization (EM)-based channel estimation for the high power amplifier (HPA)-incurred nonlinear orthogonal frequency division multiplexing (OFDM) systems based on the linearization using extended Bussgang decomposition

13p vibentley 08-09-2022 11 1   Download

Bài viết Nghiên cứu phương pháp POD trên tập hợp các kết quả của mô hình số tính toán dòng chảy nghiên cứu phương pháp POD (proper orthogonal decomposition) trên tập hợp các kết quả của mô hình số tính toán dòng chảy, thường là tập con của không gian hữu hạn chiều Rm, xuất phát từ phương pháp SVD (singular value decomposition) của ma trận hình chữ nhật.

3p vipriyankagandhi 27-07-2022 7 1   Download

Software design - Lecture 6. The main topics covered in this chapter include: software design components; traditional approach, programmers approach, system architect approach; decomposition rules; layers rule;...

21p haoasakura 30-05-2022 6 1   Download

Distributed Database Management Systems: Lecture 31. The main topics covered in this chapter include: query decomposition; steps in query processing; SQL query on distributed relations; optimized fragment query with communication operations;...

45p haoasakura 30-05-2022 9 1   Download

Distributed Database Management Systems: Lecture 32. The main topics covered in this chapter include: final phase of QD; next phase of query optimization: data localization; idempotency of unary Ops; commuting selection with projection;...

34p haoasakura 30-05-2022 9 1   Download

Chapter 5: Constraint Satisfaction Problems. The main contents of this chapter include all of the following: CSP examples, backtracking search for CSPs, problem structure and problem decomposition, local search for CSPs.

7p cucngoainhan0 10-05-2022 9 1   Download