Autor: Guo, Z. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: The unified theory of variational principles in nonlinear elasticity
Archiwum Mechaniki Stosowanej
Autorzy:: Guo, Z.-H.
Wydawca:: Polish Scientific Publishers IFTR
Powiązania:: Archives of Mechanics
Opis:: Od Vol. 53, issue 4/5 (2001) wyd: PAS. IFTR
Od Vol. 43, issue 1 (1991) wyd.: Polish Scientific Publishers = PWN
445-616 stron ; 24 cm
445-616 pages ; 24 cm
Od Vol. 50, issue 4 (1998) wyd.: Agencja Reklamowo-Wydawnicza A. Grzegorczyk
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

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Skocz do pozycji: 2.

Tytuł:: Investigation and optimization of use of anionic collectors in direct flotation of bauxite ores
Autorzy:: Liu, C.
Feng, A.
Guo, Z.
Tematy:: bauxite
collector
direct flotation; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/110801.pdf Link otwiera się w nowym oknie
Opis:: Bauxite is the main raw material for the alumina industry. Direct flotation is the most widely used method for bauxite beneficiation. In this study, a large number of direct flotation tests were carried out using several anionic reagents. The testing concluded that vegetable oil acid (VOA), naphthenic acid (NA) and lauryl polyoxyethylene phosphate (AEP12) were the three outstanding collectors for bauxite direct flotation. ZMC collector was mixed and prepared using VOA, NA and AEP12, in which the mass ratio of VOA, NA and AEP12 was 1:1:0.5. When processing the bauxite ores of the mass ratio of Al2O3 to SiO2 (A/S) = 4.99, the A/S of the final concentrate was 7.08 and the recovery of Al2O3 was 90.22%. When processing ores of A/S = 4.5, the A/S of the final concentrate was 7.04 and the recovery of Al2O3 was 92.16%. Thus, it can be seen that properties and behaviors of the ZMC reagent were remarkable and met the demands of the “Lime-Bayer Process”.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 3.

Tytuł:: Distribution and sources of n-alkanes in surface sediments of Taihu Lake, China
Autorzy:: Yu, Y.
Li, Y.
Guo, Z.
Zou, H.
Tematy:: n-alkanes
surface sediments
Taihu Lake; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/205298.pdf Link otwiera się w nowym oknie
Opis:: The last study on n-alkanes in surface sediments of Taihu Lake was in 2000, only 13 surface sediment samples were analysed, in order to have a comprehensive and up-to-date understanding of n-alkanes in the surface sediments of Taihu Lake, 41 surface sediment samples were analyzed by GC-MS. C₁₀ to C₃₇ were detected, the total concentrations of n-alkanes ranged from 2109 ng g⁻¹ to 9096 ng gg⁻¹ (dry weight). There was strong odd carbon predominance in long chain n-alkanes and even carbon predominance in short chain n-alkanes. When this finding was combined with the analysis results of wax n-alkanes (WaxCn), carbon preference index (CPI), unresolved complex mixture (UCM), hopanes and steranes, it was considered that the long chain n-alkanes were mainly from terrigenous higher plants, and that the short chain n-alkanes mainly originated from bacteria and algae in the lake, compared with previous studies, there were no obvious anthropogenic petrogenic inputs. Terrestrial and aquatic hydrocarbons ratio (TAR) and C₂₁−/C₂₅₊ indicated that terrigenous input was higher than aquatic sources and the nearshore n-alkanes were mainly from land-derived sources. Moreover, the distribution of short chain n-alkanes presented a relatively uniform pattern, while the long chain n-alkanes presented a trend that concentrations dropped from nearshore places to the middle of lake.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 4.

Tytuł:: Collosion and Absorption Behaviors of Inclusions on Refractory
Autorzy:: Ding-Guo, Z.
Ming, G.
Xin, L.
Shu-Huan, W.
Tematy:: inclusion
refractory wall surface
collision and absorption
critical stay speed; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/352357.pdf Link otwiera się w nowym oknie
Opis:: The paper is dedicated to analysis the inclusion behavior in steel using theoretical calculation and simulation of water. The aim is to establish collision and absorption model of inclusions on refractory. The article discusses the variation of critical stay speed and critical shear with the radius of inclusions in the process of colliding, rebounding and absorbing. The results show the critical stay speed and critical shear of alumina respectively surpasses 1 cm·s^-1 and 1 N·m^-2, while titanium dioxide separately exceeds 4 cm·s^-1 and 10 N·m^-2 for the inclusions that radius is less than 2.5 μm. If the inclusions occur rebound after colliding, the inclusions that radius is less than 7 μm will still be absorbed by the surface, while the inclusions that radius is more than 10 μm can easily reenter the steel. The model coincides with the water simulation results and it is of good adaptability.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 5.

Tytuł:: Synthesis, Characterization and Thermal Decomposition of a New Energetic Salt of 1H,1′H-5,5′-Bistetrazole-1,1′-diol
Autorzy:: Xiao, L.
Jin, B.
Shang, Y.
Liu, Q.
Guo, Z.
Peng, R.
Tematy:: 1,1-dimethylbiguanidium 1H,1′H-5,5′-bistetrazole-1,1′-diolate (MGBTO)
single crystal
thermal properties
energetic properties; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:: https://bibliotekanauki.pl/articles/358377.pdf Link otwiera się w nowym oknie
Opis:: 1,1-Dimethylbiguanidium 1H,1′H-5,5′-bistetrazole-1,1′-diolate (MGBTO), a novel nitrogen-rich energetic salt, was synthesized by cation exchange. Its structure was characterized by elemental analysis, FTIR, NMR, DTA and TG-DTG. Single crystal X-ray diffraction analysis revealed that MGBTO was crystallized in the monoclinic space group C2/c. Thermal analysis demonstrated that its thermal stability extended up to 531.1 K. The nonisothermal kinetic and apparent thermodynamic parameters of the exothermic decomposition of MGBTO were determined by the Kissinger and Ozawa methods. Its detonation velocity and detonation pressure were calculated on the basis of the Kamlet-Jacobs equation and were 6342 m·s–1 and 15.78 GPa, respectively. The impact and friction sensitivities of MGBTO were quantified using standard BAM (10 kg drop hammer) procedures. The results revealed that the salt has good mechanical sensitivity (FS > 120 N, IS > 40 J), thus indicating its potential applications as an energetic material.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 6.

Tytuł:: The Effect of the Energetic Additive Coated MgH2 on the Power of Emulsion Explosives Sensitized by Glass Microballoons
Autorzy:: Cheng, Y.
Wang, Q.
Liu, F.
Ma, H.
Shen, Z.
Guo, Z.
Liu, R.
Tematy:: emulsion explosive
power
hydrogen storage material
magnesium hydride; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:: https://bibliotekanauki.pl/articles/357940.pdf Link otwiera się w nowym oknie
Opis:: Traditional emulsion explosives, in spite of excellent water resistance, safe handling and good storage performance, have low power problems which seriously hinders their use. In order to improve the power of emulsion explosives, a hydrogen based emulsion explosive was devised. Scanning electron microscope pictures and experimental storage results show that the coating effect and stability of coated magnesium hydride (MgH2) are very good. The power of an emulsion explosive sensitized by glass microballoons was significantly increased (24.30 mm compression of lead block) after adding coated MgH2, compared to only 16.10 mm compression when not added. Thus emulsion explosives with coated MgH2 as an energetic additive have many potential applications.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Estimation and correction of gain mismatch and timing error in time-interleaved ADCs based on DFT
Autorzy:: Guo, L.
Tian, S.
Wang, Z.
Tematy:: correction
estimation
gain mismatch
time-interleaved analog-to-digital converter
timing error; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/221135.pdf Link otwiera się w nowym oknie
Opis:: Time-interleaved analog-to-digital converter (ADC) architecture is crucial to increase the maximum sample rate. However, offset mismatch, gain mismatch, and timing error between time-interleaved channels degrade the performance of time-interleaved ADCs. This paper focuses on the gain mismatch and timing error. Techniques based on Discrete Fourier Transform (DFT) for estimating and correcting gain mismatch and timing error in an M-channel ADC are depicted. Numerical simulations are used to verify the proposed estimation and correction algorithm.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Pre-formulation Compatibility Studies of 5-Amino-1H-tetrazole Nitrate with Several Typical Materials by Thermal and Non-thermal Techniques
Autorzy:: Guo, W.
Han, Z.
Lin, Q.
Wang, B.
Tematy:: 5-ATN
compatibility
energetic materials; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:: https://bibliotekanauki.pl/articles/358375.pdf Link otwiera się w nowym oknie
Opis:: The aim of the present study was to assess the physicochemical compatibility of a promising energetic salt, 5-amino-1H-tetrazole nitrate (5-ATN), with some typical materials. Thermal techniques (differential scanning calorimetry (DSC) and vacuum stability test (VST)) and non-thermal techniques (X-ray diffractometry (XRD) and Fourier Transform Infrared Spectroscopy (FTIR)) were applied. Five energetic materials (TNT, RDX, HMX, CL-20 and AP) and three common additives (Al, DOS and F2604-2) were tested to evaluate their compatibility with 5-ATN. Based on the DSC results, except for AP that was only partially compatible with 5-ATN, all of the selected materials exhibited good compatible with 5-ATN. The VST test further confirmed the compatibility of the 5-ATN/AP mixtures. Combined with the thermal methods, the FTIR results agreed with the DSC findings. The XRD results showed some differences.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Spin-Spin and Spin-Other-Orbit Interactions of Spin-Hamiltonian Parameters for $3d^{2(8)}$ Ions in $Al_2O_3$ Crystals
Autorzy:: Wei, Q.
Guo, L.
Yang, Z.
Wei, B.
Tematy:: 76.30.Fc
71.70.Ch
75.10.Dg
71.55.Ht; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1505102.pdf Link otwiera się w nowym oknie
Opis:: By considering weaker magnetic interactions (including spin-spin and spin-other-orbit interactions) in Hamiltonian, the spin-Hamiltonian parameters, including the zero-field splitting parameter D and g factors $(g_∥, g_⊥)$ for $3d^{2(8)}$ ions in $Al_2O_3$ crystals have been investigated. The results show that the contributions to D, $g_∥$ and $g_⊥$ from the spin-orbit interaction are dominant. The contributions from weaker magnetic interactions to D decrease (increase) with increasing charge of impurity ions for $3d^2 (3d^8)$ ions.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 10.

Tytuł:: Applicability of soil column incubation experiments to measure CO2 efflux
Autorzy:: Guo, L.
Nishimura, T.
Imoto, H.
Sun, Z.
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/25334.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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