Rock physics analysis of deep volcanic rocks in Daqing oilfield

Zhao, Haibo; Cheng, Dean; Li, Lailin

doi:10.1190/1.3603721

Cited by 4 publications

(3 citation statements)

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“…Speech acoustic analysis is to use the acoustic analysis method to transform acoustic signals into visual graphics, analyze and study the characteristics of speech acoustics digitally, and make speech evaluation. 12 Fast Fourier transform and linear prediction coding are the most commonly used in acoustic analysis, which can accurately measure and reflect the acoustic characteristics of speech. 13,14 Linear prediction technology can accurately predict and analyze acoustic parameters, because the technology can effectively compress and extract speech digital signal, and use the minimum mean square error criterion.…”

Section: Discussionmentioning

confidence: 99%

Subjective and Objective Evaluation of Speech in Adult Patients with Unrepaired Cleft Palate

Lou

Wang²,

Jiang³

et al. 2022

Journal of Craniofacial Surgery

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To explore the speech outcomes of adult patients through subjective perception evaluation and objective acoustic analysis, and to compare the differences in pronunciation characteristics between speakers with adult patients with unrepaired cleft palate and their non-cleft peers.Participants and Intervention: Subjective evaluation indicators included speech intelligibility, nasality, and consonant missing rate, whereas objective acoustic parameters included normalized vowel formants, voice onset time, and the analysis of threedimensional spectrogram and spectrum, were carried out on speech samples produced by 2 groups of speakers: (a) speakers with unrepaired cleft palate (n = 65, mean age = 25.1 years) and (b) typical speakers (n = 30, mean age = 23.7 years). Results: Compared with typical speakers, individuals with unrepaired cleft palate exhibited a lower speech intelligibility with higher nasality and consonant missing rate, the missing rate is highest for the 6 consonants syllables The acoustic parameters are mainly manifested as differences in vowel formants and voice onset time. Conclusions: The results revealed important acoustical differences between adult patients with unrepaired cleft palate and typical speakers. The trend of spectral deviation may have contributed to the difficulty in producing pressure vowels and aspirated consonants in individuals with speech disorders related to cleft palate.

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Section: Discussionmentioning

confidence: 99%

Subjective and Objective Evaluation of Speech in Adult Patients with Unrepaired Cleft Palate

Lou

Wang²,

Jiang³

et al. 2022

Journal of Craniofacial Surgery

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“…It is bounded by the Hegenshan-Heihe Fault in the north and the Solonker-Xra Moron Suture in the south, and it is adjacent to the Songliao Basin in the east (Figure 1b). Its history includes the closure of the Paleo-Asian Ocean between the Siberian Craton in the north and the North China Craton in the south during the Paleozoic period [37] and the superposition of the Mongol-Okhotsk Ocean and Paleo-Pacific Ocean tectonic systems during the Mesozoic period [15,38]. Stratigraphy and widespread Permian and Mesozoic volcano sedimentary succession constitute the major body of the southern GXR.…”

Section: Regional Geologymentioning

confidence: 99%

Petrogenesis and Tectonic Setting of Early Cretaceous A-Type Granite from the Southern Great Xing’an Range, Northeastern China: Geochronological, Geochemical, and Hf Isotopic Evidence

Ran,

Wang,

Sun

2023

Minerals

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The southern Great Xing’an Range is located in the eastern Central Asian Orogenic Belt, where voluminous igneous rocks developed during the Late Mesozoic period. The east slope of the southern Great Xing’an Range has been the topic of numerous debates on the level of influence of the Mongol-Okhotsk and the Paleo-Pacific regimes in the Late Mesozoic period. Therefore, this area is a suitable region in which to study the temporal changes in magma sources and tectono-magmatic evolution. In this paper, whole-rock geochemical data, zircon U-Pb geochronology, and zircon Hf isotope studies were carried out on the granitoids in the east slope area of the southern Great Xing’an Range. LA-ICP-MS zircon U-Pb dating revealed the ages of four granitoid samples: 135.0 ± 0.6 Ma, 130.7 ± 1.4 Ma, 130.4 ± 1.0 Ma, and 127.6 ± 0.8 Ma, respectively. The Hf isotope values 176Hf/177Hf = 0.282751–0.283015, εHf (t) = +2.0~+11.5, and T2DM = 583~1442 Ma suggest that the magma was generated by partial melting of Meso- and Neoproterozoic accreted and thickened low crust. The whole-rock geochemical data implied that these granitoids are A-type granite and their formation is closely linked to the subduction of the Paleo-Pacific Ocean plate. These geochemical, isotopic, and geochronological data suggest that the Early Cretaceous magmatism in the east slope area of the southern Great Xing’an Range formed in an extensional back-arc tectonic setting associated with the slab roll-back of the Paleo-Pacific plate subduction.

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“…The soil is cut, crushed and thrown by blade while rotary cultivator is working, and the counterforce on blade is aroused by soil, this is soil resistance [8]. The blade hardly accepts axial forces during the motor process, so the soil resistance F could be decomposed into Fx force and Fz force along X axis and Z axis [9], as is shown in Fig. 1.…”

Section: Theoretical Analysismentioning

confidence: 99%

Study on Surface Properties of Big Tilling Depth Rotary Blade for Laser Shock Peening

Miao

Tao

et al. 2013

AMM

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A stress concentration area of big tilling depth rotary blade with 350 mm turning radius is found by ANSYS, and is strengthened by laser shock peening (LSP). The surface properties of rotary blade for LSP, included residual stress, surface micrograph, microstructure and hardness, are researched in this article. The results show that microstructure density is higher after LSP, and the layer is smoother, then the stress concentration is decreased. Meanwhile, the hardness and residual stress of rotary blade surface layer are significantly increased. The average residual stress reaches 390.7 MPa, and the average Rockwell hardness number achieves 45.1 HRC. Measuring results of residual stress, surface micrograph, microstructure and hardness after LSP indicate that LSP can significantly improve the surface properties of rotary blade, and it provides a new basis for further mending surface quality and fatigue property of big tilling depth rotary blade.

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Rock physics analysis of deep volcanic rocks in Daqing oilfield

Cited by 4 publications

References 0 publications

Subjective and Objective Evaluation of Speech in Adult Patients with Unrepaired Cleft Palate

Subjective and Objective Evaluation of Speech in Adult Patients with Unrepaired Cleft Palate

Petrogenesis and Tectonic Setting of Early Cretaceous A-Type Granite from the Southern Great Xing’an Range, Northeastern China: Geochronological, Geochemical, and Hf Isotopic Evidence

Study on Surface Properties of Big Tilling Depth Rotary Blade for Laser Shock Peening

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