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Your search keyword '"Zhang, Caixia"' showing total 506 results
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506 results on '"Zhang, Caixia"'

8. Terahertz Receiver based on Room-Temperature Rydberg-Atoms

Author

Lin, Yayi, She, Zhenyue, Chen, Zhiwen, Li, Xianzhe, Zhang, Caixia, Liao, Kaiyu, Zhang, Xinding, Huang, Wei, Yan, Hui, and Zhu, Shiliang

Subjects
Physics - Atomic Physics, Physics - Optics, Quantum Physics
Abstract

Realization of practical terahertz wireless communications still faces many challenges. The receiver with high sensitivity is important for THz wireless communications. Here we demonstrate a terahertz receiver based on the cesium Rydberg atoms in a room-temperature vapor cell. The minimum detectable THz electric field is calibrated. With this receiver, the phase-sensitive conversion of amplitude-modulated or frequency-modulated terahertz waves into optical signals is performed. The results show that the atomic receiver has many advantages due to its quantum properties. Especially, the long distance THz wireless communications is achievable using this receiver. Furthermore, the atomic receiver can be used in the THz wireless-to-optical link.

Published
2022

23. Investigate of preoperative hope level and analysis of influencing factors in elderly patients with femoral neck fracture (老年股骨颈骨折患者术前希望水平及影响因素分析)

Author

ZHANG Caixia (张彩侠), LI A Min (李阿敏), PAN Rusheng (潘如胜), LI Ling (李玲), and CHE Xia (车侠)

Subjects
elderly patients, femoral neck fracture, hope level, influencing factors, 老年患者, 股骨颈骨折, 希望水平, 影响因素, Nursing, RT1-120
Abstract

Objective To investigate the preoperative hope level of elderly patients with femoral neck fracture and analyze its influencing factors, so as to provide a practical basis for improving the preoperative hope level of elderly patients with femoral neck fracture and promoting postoperative rehabilitation. Methods A total of 206 cases of elderly patients with femoral neck fractures who were eligible for the surgical treatment were included as the research objects. The general information questionnaire, Herth Hope Index (HHI)Scale, General Self-Efficacy Scale(GSES) were analyzed. Results The total HHI score of 206 elderly patients with femoral neck fractures was (31.73+-9.68) points, and scores of each dimension were: positive attitude towards reality and the future (9.14+-1.10), taking positive actions (11.69+-5.36), maintaining close relationships with others (10.89+-3.22); Among them, 63 cases (30. 6%) were high hope levels, 131 cases (65. 6%) were medium hope levels, and 12 cases (3. 8%) were low hope levels. The results of multiple stepwise regression analysis showed that age, comorbidity index, economic status, housing status, and self-efficacy were significant predictors of the preoperative hope level of elderly patients with femoral neck fractures (p

Published
2023
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36. mNGS and Serum G Test in Distinguishing between Pneumocystis Jirovecii Colonization and Infection: Value Comparison and Correlation Analysis

Author

ZHANG Caixia, LIU Xinnian, DU Chuan, WANG Xinwei

Subjects
pneumonia, pneumocystis, pneumocystis jirovecii, mngs technique of alveolar lavage fluid, serum g test, infection, colonization, value, correlation, Medicine
Abstract

Background Pneumocystis jirovecii (PJ) can colonize the lungs, and cause pulmonary infections. It is essential to distinguish between PJ colonization and infection in the lung to avoid clinical overtreatment and delayed treatment. Many studies have shown that both the mNGS technique and serum G test can be used to aid the diagnosis of PJ pneumonia, but it is still unclear whether they have the appropriate cut-off value to distinguish PJ colonization from PJ infection. Objective To investigate the values of mNGS of alveolar lavage fluid and serum G test in distinguishing between infection and colonization of PJ and to assess the correlation between them. Methods A retrospective study design was used. Forty inpatients with pulmonary infections were recruited from Hubei No.3 People's Hospital of Jianghan University from September 2018 to May 2022, and divided into PJ infection group (n=21) and colonization group (n=19), according to the prevalence of anti-PJ treatment based on mNGS results of alveolar lavage fluid. Clinical data were collected, including general information〔gender, age, BMI, smoking history, underlying diseases (chronic kidney disease, hematological diseases, autoimmune diseases, malignancy, HIV, solid organ transplantation, chronic lung disease, the use of glucocorticoid/immunosuppressive agents) 〕, clinical symptoms (fever, cough, phlegm, dyspnea, chest pain, hemoptysis), imaging features (ground-glass shadow, interstitial change, consolidation, nodule, pleural effusion, cyst), laboratory indicators (white blood cell count, neutrophil count, lymphocyte count, PCT, CRP, LDH, PaO2/FiO2, CD4+T lymphocytes). The receiver operating characteristic (ROC) curve of mNGS and serum G test was plotted and analyzed to assess their performance in distinguishing between PJ infection and colonization, and the correlation between the two was analyzed. Results The utilization rate of glucocorticoids or immunosuppressants in PJ infection group was higher than that of colonization group (P

Published
2023
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