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4 results on '"Zhong-Bao Xu"'

1. Application of antibiotic bone cement combined with lobulated perforator flap based on descending branch of the lateral circumflex femoral artery in treatment of infected traumatic tissue defects of foot

Author

Zhong-Bao Xu, Guo-Guang Dai, Zhong-Ye Sun, Hao Li, Jun Yan, Hai-Qing Li, and Zhao-Qi Guo

Subjects
Perforator flap, Anterolateral thigh flap, Bone cement, Enhanced recovery after surgery, Diseases of the musculoskeletal system, RC925-935
Abstract

Abstract Objective To evaluate the clinical effectiveness of antibiotic bone cement combined with the lobulated perforator flap based on the descending branch of the lateral circumflex femoral artery (d-LCFA) in the treatment of infected traumatic tissue defects in the foot, in accordance with the Enhanced Recovery after Surgery (ERAS) concept. Methods From December 2019 to November 2022, 10 patients with infected traumatic tissue defects of the foot were treated with antibiotic bone cement combined with the d-LCFA lobulated perforator flap. The cohort comprised 6 males and 4 females, aged 21 to 67 years. Initial infection control was achieved through debridement and coverage with antibiotic bone cement, requiring one debridement in nine cases and two debridements in one case. Following infection control, the tissue defects were reconstructed utilizing the d-LCFA lobulated perforator flap, with the donor site closed primarily. The flap area ranged from 12 cm×6 cm to 31 cm×7 cm. Postoperative follow-up included evaluation of flap survival, donor site healing, and ambulatory function of the foot. Results The follow-up period ranged from 7 to 24 months, averaging 14 months. Infection control was achieved successfully in all cases. The flaps exhibited excellent survival rates and the donor site healed by first intention. Based on the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale, pain and function were evaluated as excellent in 3 cases, good in 5 cases, and moderate in 2 cases. Conclusion The application of antibiotic bone cement combined with the d-LCFA lobulated perforator flap is an effective treatment for infected traumatic tissue defects of the foot with the advantages of simplicity, high repeatability, and precise curative effects. The application of the d-LCFA lobulated perforator flap in wound repair causes minimal damage to the donor site, shortens hospital stays, lowers medical expenses, and accelerates patient rehabilitation, aligning with the ERAS concept. Therefore, it is a practice worth promoting in clinical use.

Published
2024
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2. A Binary Phase only Pupil Masks for Extending the Depth of Field of a Microscopy

Author

Zou Shuang, Zhong Bao Xu, and Xin Yi Wang

Subjects
Physics, Field (physics), business.industry, Aperture, Astrophysics::Instrumentation and Methods for Astrophysics, Phase (waves), General Medicine, Entrance pupil, Optics, Optical transfer function, Pupil function, Depth of field, business, Zemax
Abstract

A binary phase only pupil mask with phase rings is placed on the plane of the aperture to modulate the wave front of the traditional microscopic imaging system, the modulation transfer function curves, obtained by the annular ring aperture applied to the pupil of the imaging system, do not change much within the required depth of field range, therefore, the loss of systems imaging information is avoided,meanwhile the depth of the field is enlarged. The Zemax simulated result shows that it is able to make the depth of field of microscopic imaging system extend 10 times to adopt this method.

Published
2013

3. The Optimal Radius Calculation and Error Analyses of the '0,π' Phase Pupil Mask

Author

Zhong Sheng Zhai, Xiao Zhu, Shuang Zou, Zhong Bao Xu, and Qing Lv

Subjects
Diffraction, business.industry, media_common.quotation_subject, Phase (waves), General Medicine, Radius, Pupil, Optics, Quality (physics), Contrast (vision), Spatial frequency, Depth of field, business, Mathematics, media_common
Abstract

A diffraction limited circularly symmetric optical imaging system with “0,π” phase pupil mask was studied, which extended depth of field. The optimal radiuses of the mask in the different amount of defocus are calculated, which in a certain contrast value 0.05 and 0.1, can provide the largest spatial frequency band. On the other hand, the effect of mask manufacturing error is analyzed, and the performance of the simulation imaging system has been verified experimentally that the image system still can obtain the high quality output images even without any post-processing.

Published
2013

4. Shifting Control and Simulation of Dual-Clutch Transmission

Author

Jun Yi, Yong Wang, and Zhong Bao Xu

Subjects
Engineering, Index (economics), Transmission (telecommunications), Control theory, business.industry, Control (management), General Engineering, Process (computing), Discrete cosine transform, Clutch, Oil pressure, business, Dual (category theory)
Abstract

This paper expounds the structure and working principle of gear-shifting of dual-clutch transmission (DCT), analyzes the shift process of dual-clutch transmission, and establishes its dynamic model and the evaluation index of shifting quality. Aimed at the evaluation index of the impact degree, this paper puts forward the method of controlling oil pressure of clutches and throttle opening of engine which makes the impact degrees to zero, uses smatlab/simulink to establish the simulation and the results tests the method is available.

Published
2012

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