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Article: [Analysis of surgical approaches and mandibular treatment strategies for different types of tumors involving parapharyngeal space].

Yan, X Q / Nan, X R / Ren, X Y / Zhao, J X

Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology

2024 Volume 59, Issue 4, Page(s) 374–377

Abstract: In view of the surgical complexity of parapharyngeal space tumors involved, this paper summarized the disease data of patients with parapharyngeal space tumors involved in the Department of Oral and Maxillofacial Surgery, the First Hospital of Shanxi ... ...

Abstract	In view of the surgical complexity of parapharyngeal space tumors involved, this paper summarized the disease data of patients with parapharyngeal space tumors involved in the Department of Oral and Maxillofacial Surgery, the First Hospital of Shanxi Medical University from January 2015 to January 2021. It also summarized the surgical approach and mandibular management, so as to explore surgical strategies for different characteristics of parapharyngeal space tumors involved. A total of 49 patients, including 28 males and 21 females, median age 52 years (range 24-72 years). They were treated with four surgical approaches for tumor resection, 25 cervical approach, 5 cheek and neck approach, 3 transoral approach, and 16 cervical-maxillary approach. Among the patients treated with cervical-maxillary approach, 3 patients were treated with mandible square resection, and 6 patients were treated with temporary mandible dissection. Seven cases were treated with tumor resection and partial mandibular resection. There are various surgical approaches and mandibular management methods involving tumors in the parapharyngeal space, and clinical decisions should be made based on tumor diameter, location, boundary, blood supply and pathological types.
MeSH term(s)	Male ; Female ; Humans ; Young Adult ; Adult ; Middle Aged ; Aged ; Pharyngeal Neoplasms/surgery ; Parapharyngeal Space/pathology ; Mandible/surgery ; Mandible/pathology ; Head/pathology ; Retrospective Studies
Language	Chinese
Publishing date	2024-03-27
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	1027950-7
ISSN	1002-0098
ISSN	1002-0098
DOI	10.3760/cma.j.cn112144-20240215-00073
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Article: [Application of branch-first technique in total thoracic aorta replacement: short and medium term effect of 11 cases].

Yan, X Q / Wu, G / Liu, S / Liu, J H / Wang, P F / Zhang, R C

Zhonghua wai ke za zhi [Chinese journal of surgery

2022 Volume 60, Issue 11, Page(s) 1018–1022

Abstract: Objective: ...

Abstract	Objective:
MeSH term(s)	Male ; Female ; Humans ; Aorta, Thoracic/surgery ; Retrospective Studies ; Aortic Aneurysm, Thoracic/surgery ; Aneurysm, Dissecting/surgery ; Aorta, Abdominal/surgery ; Blood Vessel Prosthesis Implantation
Language	Chinese
Publishing date	2022-11-02
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	604573-x
ISSN	0529-5815
ISSN	0529-5815
DOI	10.3760/cma.j.cn112139-20211216-00606
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Article ; Online: Linear Breit-Wheeler process driven by compact lasers.

Han, L Q / Cai, J / Shou, Y R / Liu, X D / Yu, J Q / Yan, X Q

Physical review. E

2023 Volume 108, Issue 5-2, Page(s) 55208

Abstract: We report a proposal to observe the two-photon Breit-Wheeler process in plasma driven by compact lasers. A high-charge electron bunch can be generated from laser plasma wakefield acceleration when a tightly focused laser pulse propagates in a subcritical ...

Abstract	We report a proposal to observe the two-photon Breit-Wheeler process in plasma driven by compact lasers. A high-charge electron bunch can be generated from laser plasma wakefield acceleration when a tightly focused laser pulse propagates in a subcritical density plasma. The electron bunch scatters with the laser pulse coming from the opposite direction and resulting in the emission of high brilliance x-ray pulses. In a three-dimensional particle-in-cell simulation with a laser pulse of ∼10 J, one could produce an x-ray pulse with a photon number higher than 3×10^{11} and brilliance above 1.6×10^{23} photons/s/mm^{2}/mrad^{2}/0.1%BW at 1 MeV. The x-ray pulses collide in the plasma and create more than 1.1×10^{5} electron-positron pairs per shot. It is also found that the positrons can be accelerated transversely by a transverse electric field generated in the plasma, which enables the safe detection in the direction away from the laser pulses. This proposal enables the observation of the linear Breit-Wheeler process in a compact device with a single shot.
Language	English
Publishing date	2023-12-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	2844562-4
ISSN	2470-0053 ; 2470-0045
ISSN (online)	2470-0053
ISSN	2470-0045
DOI	10.1103/PhysRevE.108.055208
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: [Research progress in the methods for evaluating depth of invasion of tongue squamous cell carcinoma].

Li, M / Nan, X R / Yan, X Q

Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology

2019 Volume 54, Issue 10, Page(s) 712–716

Abstract: Depth of invasion is a newly added index for TNM staging of oral cancer in the eighth edition. Preoperative evaluation of depth of invasion not only provides a reference for surgical margin, but also serves as an independent prognostic factor for ... ...

Abstract	Depth of invasion is a newly added index for TNM staging of oral cancer in the eighth edition. Preoperative evaluation of depth of invasion not only provides a reference for surgical margin, but also serves as an independent prognostic factor for predicting lymph node metastases. At present, the main methods for assessing the depth of invasion of tongue squamous cell carcinoma include ultrasound examination, MRI, CT, positron emission tomography (PET) and histopathological examination. This paper summarizes the evaluation method and clinical effect of depth of invasion of tongue cancer, and analyzes its advantages and boundedness. In addition, this study is expected to provide a reference for the surgical treatment of tongue squamous cell carcinoma.
MeSH term(s)	Carcinoma, Squamous Cell/pathology ; Humans ; Lymphatic Metastasis ; Neoplasm Invasiveness/diagnostic imaging ; Neoplasm Staging ; Positron-Emission Tomography ; Tongue Neoplasms/pathology
Language	Chinese
Publishing date	2019-10-11
Publishing country	China
Document type	Journal Article
ZDB-ID	1027950-7
ISSN	1002-0098
ISSN	1002-0098
DOI	10.3760/cma.j.issn.1002-0098.2019.10.013
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Article ; Online: Mechanism of abnormally slow crystal growth of CuZr alloy.

Yan, X Q / Lü, Y J

The Journal of chemical physics

2015 Volume 143, Issue 16, Page(s) 164503

Abstract: Crystal growth of the glass-forming CuZr alloy is shown to be abnormally slow, which suggests a new method to identify the good glass-forming alloys. The crystal growth of elemental Cu, Pd and binary NiAl, CuZr alloys is systematically studied with the ... ...

Abstract	Crystal growth of the glass-forming CuZr alloy is shown to be abnormally slow, which suggests a new method to identify the good glass-forming alloys. The crystal growth of elemental Cu, Pd and binary NiAl, CuZr alloys is systematically studied with the aid of molecular dynamics simulations. The temperature dependence of the growth velocity indicates the different growth mechanisms between the elemental and the alloy systems. The high-speed growth featuring the elemental metals is dominated by the non-activated collision between liquid-like atoms and interface, and the low-speed growth for NiAl and CuZr is determined by the diffusion across the interface. We find that, in contrast to Cu, Pd, and NiAl, a strong stress layering arisen from the density and the local order layering forms in front of the liquid-crystal interface of CuZr alloy, which causes a slow diffusion zone. The formation of the slow diffusion zone suppresses the interface moving, resulting in much small growth velocity of CuZr alloy. We provide a direct evidence of this explanation by applying the compressive stress normal to the interface. The compression is shown to boost the stress layering in CuZr significantly, correspondingly enhancing the slow diffusion zone, and eventually slowing down the crystal growth of CuZr alloy immediately. In contrast, the growth of Cu, Pd, and NiAl is increased by the compression because the low diffusion zones in them are never well developed.
Language	English
Publishing date	2015-10-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	3113-6
ISSN	1089-7690 ; 0021-9606
ISSN (online)	1089-7690
ISSN	0021-9606
DOI	10.1063/1.4934227
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Article ; Online: Radiation reaction as an energy enhancement mechanism for laser-irradiated electrons in a strong plasma magnetic field.

Gong, Z / Mackenroth, F / Yan, X Q / Arefiev, A V

Scientific reports

2019 Volume 9, Issue 1, Page(s) 17181

Abstract: Conventionally, friction is understood as a mechanism depleting a physical system of energy and as an unavoidable feature of any realistic device involving moving parts. In this work, we demonstrate that this intuitive picture loses validity in nonlinear ...

Abstract	Conventionally, friction is understood as a mechanism depleting a physical system of energy and as an unavoidable feature of any realistic device involving moving parts. In this work, we demonstrate that this intuitive picture loses validity in nonlinear quantum electrodynamics, exemplified in a scenario where spatially random friction counter-intuitively results in a highly directional energy flow. This peculiar behavior is caused by radiation friction, i.e., the energy loss of an accelerated charge due to the emission of radiation. We demonstrate analytically and numerically how radiation friction can dramatically enhance the energy gain by electrons from a laser pulse in a strong magnetic field that naturally arises in dense laser-irradiated plasma. We find the directional energy boost to be due to the transverse electron momentum being reduced through friction whence the driving laser can accelerate the electron more efficiently. In the considered example, the energy of the laser-accelerated electrons is enhanced by orders of magnitude, which then leads to highly directional emission of gamma-rays induced by the plasma magnetic field.
Language	English
Publishing date	2019-11-20
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-019-53644-x
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Direct laser acceleration of electrons assisted by strong laser-driven azimuthal plasma magnetic fields.

Gong, Z / Mackenroth, F / Wang, T / Yan, X Q / Toncian, T / Arefiev, A V

Physical review. E

2020 Volume 102, Issue 1-1, Page(s) 13206

Abstract: A high-intensity laser beam propagating through a dense plasma drives a strong current that robustly sustains a strong quasistatic azimuthal magnetic field. The laser field efficiently accelerates electrons in such a field that confines the transverse ... ...

Abstract	A high-intensity laser beam propagating through a dense plasma drives a strong current that robustly sustains a strong quasistatic azimuthal magnetic field. The laser field efficiently accelerates electrons in such a field that confines the transverse motion and deflects the electrons in the forward direction. Its advantage is a threshold rather than resonant behavior, accelerating electrons to high energies for sufficiently strong laser-driven currents. We study the electron dynamics via a test-electron model, specifically deriving the corresponding critical current density. We confirm the model's predictions by numerical simulations, indicating energy gains two orders of magnitude higher than achievable without the magnetic field.
Language	English
Publishing date	2020-08-14
Publishing country	United States
Document type	Journal Article
ZDB-ID	2844562-4
ISSN	2470-0053 ; 2470-0045
ISSN (online)	2470-0053
ISSN	2470-0045
DOI	10.1103/PhysRevE.102.013206
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Article ; Online: Deflection of a reflected intense circularly polarized light beam induced by asymmetric radiation pressure.

Tang, Y H / Gong, Z / Yu, J Q / Shou, Y R / Yan, X Q

Physical review. E

2020 Volume 100, Issue 6-1, Page(s) 63203

Abstract: A deflection effect of an intense laser beam with spin angular momentum is revealed theoretically by an analytical modeling using radiation pressure and momentum balance of laser plasma interaction in the relativistic regime as a deviation from the law ... ...

Abstract	A deflection effect of an intense laser beam with spin angular momentum is revealed theoretically by an analytical modeling using radiation pressure and momentum balance of laser plasma interaction in the relativistic regime as a deviation from the law of reflection. The reflected beam deflects out of the plane of incidence with a deflection angle up to several milliradians, when a nonlinear polarized laser, with the intensity I_{0}∼10^{19}W/cm^{2} and duration around tens of femtoseconds, is obliquely incident and reflected by an overdense plasma target. This effect originates from the asymmetric radiation pressure caused by spin angular momentum of the laser photons. The dependence of the deflection angle of a Gaussian-type laser on the parameters of laser pulse and plasma foil is theoretically derived, which is also confirmed by three-dimensional particle-in-cell simulations of circularly polarized laser beams with the different intensity and pulse duration.
Language	English
Publishing date	2020-01-21
Publishing country	United States
Document type	Journal Article
ZDB-ID	2844562-4
ISSN	2470-0053 ; 2470-0045
ISSN (online)	2470-0053
ISSN	2470-0045
DOI	10.1103/PhysRevE.100.063203
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: A versatile control program for positioning and shooting targets in laser-plasma experiments.

Wang, P J / Wang, D H / Gao, Y / Shou, Y R / Liu, J B / Mei, Z S / Cao, Z X / Pan, Z / Kong, D F / Xu, S R / Liu, Z P / Chen, S Y / Zhao, J R / Geng, Y X / Zhao, Y Y / Yan, X Q / Ma, W J

The Review of scientific instruments

2023 Volume 94, Issue 9

Abstract: We introduce a LabVIEW-based control program that significantly improves the efficiency and flexibility in positioning and shooting solid targets in laser-plasma experiments. The hardware driven by this program incorporates a target positioning subsystem ...

Abstract	We introduce a LabVIEW-based control program that significantly improves the efficiency and flexibility in positioning and shooting solid targets in laser-plasma experiments. The hardware driven by this program incorporates a target positioning subsystem and an imaging subsystem, which enables us to install up to 400 targets for one experimental campaign and precisely adjust them in six freedom degrees. The overall architecture and the working modes of the control program are demonstrated in detail. In addition, we characterized the distributions of target positions of every target holder and simultaneously saved the target images, resulting in a large dataset that can be used to train machine learning models and develop image recognition algorithms. This versatile control system has become an indispensable platform when preparing and conducting laser-plasma experiments.
Language	English
Publishing date	2023-09-29
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/5.0158103
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Article ; Online: High efficiency and collimated terahertz pulse from ultra-short intense laser and cone target.

Cai, J / Shou, Y R / Han, L Q / Huang, R X / Wang, Y X / Song, Z H / Geng, Y X / Yu, J Q / Yan, X Q

Optics letters

2022 Volume 47, Issue 7, Page(s) 1658–1661

Abstract: We propose a new, to the best of our knowledge, method to radiate a high-efficiency and collimated terahertz (THz) pulse from a relativistic femtosecond laser and cone target. Particle-in-cell simulations demonstrate that a THz source of 40 mJ, pointing ... ...

Abstract	We propose a new, to the best of our knowledge, method to radiate a high-efficiency and collimated terahertz (THz) pulse from a relativistic femtosecond laser and cone target. Particle-in-cell simulations demonstrate that a THz source of 40 mJ, pointing at an angle of ∼20
Language	English
Publishing date	2022-04-01
Publishing country	United States
Document type	Journal Article
ISSN	1539-4794
ISSN (online)	1539-4794
DOI	10.1364/OL.454811
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