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Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To elucidate the clinical significance in facilitating timely diagnosis and treatment of RMPP in children by investigating the association between infection caused by macrolide-resistant Mycoplasma pneumoniae (MRMP) and refractory Mycoplasma pneumoniae pneumonia (RMPP) in pediatric patients. Methods The clinical data of 714 hospitalized children with refractory Mycoplasma pneumoniae pneumonia (RMPP) were retrospectively analyzed. Bronchoscopy and bronchoalveolar lavage fluid (BALF) were performed on each subject, and the BALFs were collected to detect mutation sites in the V region of 23S rRNA for Mycoplasma pneumoniae DNA. Based on the gene detection results, children with RMPP were categorized into a macrolide-resistant group and a control group (non-macrolide-resistant group). Results A total of 714 children diagnosed with refractory Mycoplasma pneumoniae pneumonia (RMPP) were enrolled in this study, including 509 cases in the macrolide-resistant group and 205 cases in the control group. Among them, there were 369 males (54. 7%) and 345 females (45. 3%). The macrolide-resistant group exhibited higher average age, fever duration, and hospitalization days compared to the control group. Furthermore, elevated levels of white blood cell count (WBC), neutrophil percentage (NE%), high-sensitivity C-reactive protein (hs-CRP), lactate dehydrogenase (LDH), and interleukin-6 (IL-6) were observed in the macrolide-resistant group when compared to the control group (P ＜ 0. 05 or P ＜ 0. 000 1). Compared to the control group, children with macrolide-resistant Mycoplasma pneumoniae pneumonia (RMPP) exhibited higher incidences of lung consolidation, pleural effusion, necrotic pneumonic lesions, severe MPP (SMPP) /fulminant MPP (FMPP), flocculent and viscous tracheal secretions, severe mucosal lesions (erosion, ulceration or necrosis), bronchial inflammatory stenosis, endo-bronchial plastic phlegm plugs and extra-pulmonary complications (P ＜ 0. 05 or P ＜0. 0001). Conclusions MRMP infection can contribute to the development of RMPP, potentially exacerbating respiratory conditions in affected children. Timely bronchoscopy and collection of BALF samples for accurate evaluation of respiratory tract lesions and detection of MRMP infection have significant implications for guiding precise clinical diagnosis and treatment. [ABSTRACT FROM AUTHOR]

Based on the theories of "projection-perception" and wooden barrels, we take the online travelogue text as the research object, use the methods of online text analysis and constituent distance analysis to compare the official projected image of China's pilot zones of national parks with the perceived image of the tourists, and use the 2-dimensional 4-image model to explore the optimization path of its image. The study's findings are as follows: (1) The projected and perceived images of China's pilot zones of the national parks system differ considerably, with the projected high-frequency words mainly covering ecology and nature protection, and the perceived high-frequency words principally including tourism experience and facilities and equipment. Based on the characterization of high-frequency words, the 10 pilot zones are summarized into four main image categories: ecological environment, spatial layout, service quality, and functional value. Different pilot zones have different combinations of projected-perceived images. (2) In terms of the relationship chain, the official projected and tourist-perceived social network semantics show a "core-subcore", diffusion network structure, which constitutes "country-park-ecology-protection" and "scenery-scenic spot-attractions" respectively 2 relationship chains. (3) Regarding the differences in image structure, the main categories of spatial layout differ greatly in composition, which affects the shaping of the overall image of the pilot zones as the short plank of the wooden barrel. Therefore, there is considerable room for improvement in the pilot area image of China's national parks system, preferably from the perspective of "whole-local," we must take reasonable and optimized countermeasures according to the "projection-perception" of different pilot zones of the national parks system. [ABSTRACT FROM AUTHOR]

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The distributed photovoltaic (PV) power system is considered to be one of the most important forms of energy in the future with the vigorous development of green power and the construction of new power systems. As the penetration rate of photovoltaic continues to increase, the traditional distribution network trend structure will be changed, resulting in the impact of power quality, security protection and planning of the distribution network. The development status of distributed PV power generation system was outlined, the characteristics of distributed PV grid-connected and the working principle was analyzed. Secondly, the impacts of distributed PV grid-connected access to the distribution network and governance measures were outlined, analyzed and summarized. Finally, it was expected to provide reference for the rapid development of distributed PV power access to high penetration of renewable energy distribution system. [ABSTRACT FROM AUTHOR]

Copyright of China Tropical Medicine is the property of China Tropical Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Urban Architecture & Development is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To apply the existing best evidence of the prevention and management of febrile neutropenia after chemotherapy to nursing practice in order to reduce the incidence of complications in patients with breast cancer. Methods Using the JBI clinical evidence practice application system, based on the existing best evidence, six review criteria were developed and applied to nursing practice. The quality review and process improvement were carried out in one ward for 6 months. In the baseline review process, 349 times of chemotherapy in 128 cases were statistically reviewed. In the second-round review process, 349 times of chemotherapy in 128 cases were statistically reviewed. Fifty patients were followed up and their self-efficacy was evaluated by using General Efficacy Scale (GES). Results After the second round of examination, all the examination standards reached 100. 00% except the seventh article(patients had to follow the doctor's advice to complete medical examination and recoding) , which rose to 88. 2%. According to the follow-up outcomes, patients had achieved higher GES scores after implementation of evidence-based prevention and management. Conclusion The evidence-based quality review program has significantly improved nursing practice in the prevention and management of febrile neutropenia in breast cancer patients undergoing chemotherapy, but it still needs to be reviewed and improved to improve the quality of nursing. (目的 将现有的化疗后粒细胞减少性发热的预防与治疗的最佳证据应用到护理实践中, 以减少化疗患者并发症的发生。方法 采用JBI临床证据实践应用系统, 基于现有的最佳证据, 制定9条审查标准, 应用于护理实践, 在1个病区开展6个月的质量审查和流程改进。基线审查中, 选取128名乳腺癌化疗患者, 对其中的349次化疗进行统计审查; 第2轮审查中, 选取128名乳腺癌化疗患者, 对其中的349次化疗进行统计审查。另外, 随访50名患者, 分别在改善前和改善后采用一般自我效能量表(GES)评估患者自我效能。结果 经过第 2轮审查, 除第7条(患者均遵医完善检查和记录)上升至88. 2%, 其余审查标准均达到100. 00%。随访结果显示, 改善后患者GES量表评分较改善前得到有效提升(P＜0. 05)。结论 基于循证的质量审查项目改善了乳腺癌化疗患者粒细胞减少性发热的预防与管理的护理实践, 但仍需不断审查改进, 以提高护理质量。)

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Atomic Energy Science & Technology is the property of Editorial Board of Atomic Energy Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To evaluate the bone loss of postmenopausal early-stage breast cancer in Chinese patients during 5-year aromatase inhibitor (AI) adjuvant endocrine therapy and to provide the basis for bone health management. Methods The study was a prospective observational study. Patients with estrogen receptor (ER) and /or progesterone receptor (PR) positive postmenopausal early breast cancer had to take an examination for bone mineral density (BMD) before starting AI adjuvant endocrine therapy. BMD of the femoral neck, total hip, and the lumbar spine was detected using dual-energy X-ray absorptiometry. During the treatment, patients needed to receive BMD annually and were followed up regularly. The changes of BMD and the incidence of osteoporosis during AI treatment were analyzed. Results From November 2013 to August 2016, 131 patients with breast cancer meeting the inclusion criteria were enrolled. Their median age was 60 years old, median menopausal age was 50, and the treatment time of AI was 60 to 100 months. With a median follow-up of 86 months, BMD of the lumbar spine L1 to L4, femoral neck, and total hip decreased year by year during the 5-year AI treatment. The total BMD decrease rate in 5 years was 6.90%, 5.68%, and 7.14%, respectively. BMD decreased most rapidly in the first year and decreased steadily from 2 to 5 years. The change rate of lumbar spine BMD in the first year was significantly higher than that from 2 to 5 years (P<0.01). Further stratified analysis showed that baseline BMD, age, and BMI did not affect the decreasing rate of BMD. Seventeen patients (17%) had new-onset osteoporosis during the 5 years, including 15 patients with baseline bone mass loss, 76% of whom occurred in the lumbar spine (13/17), and the fracture incidence was 2% (2/100). Conclusion BMD in postmenopausal early breast cancer patients decreases year by year during the AI adjuvant endocrine therapy. Bone health management during AI treatment should be strengthened and early intervention should be taken to reduce the occurrence of osteoporosis. [ABSTRACT FROM AUTHOR]

Copyright of Feed Research is the property of Editorial Board of Feed Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of University Chemistry is the property of Peking University, College of Chemistry & Molecular Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the expression of serum Sestrin2 in acute ST-segment elevation myocardial infarction (STEMI) and its relationship with ischemia-reperfusion injury (IRI). Methods A total of 124 STEMI patients were selected as the STEMI group, and they were divided into the IRI group (72 cases) and the non-IRI group (52 cases) according to whether IRI occurred after surgery. Another 50 healthy volunteers were selected as the control group. Serum levels of Sestrin2, malondialdehyde (MDA) and superoxide dismutase (SOD) were detected in all subjects. Pearson's method was used to analyze the correlation between serum Sestrin2 and other indicators in STEMI patients. Multivariate Logistic regression analysis was used to analyze the risk factors of IRI in STEMI patients. The receiver operating characteristic curve (ROC) was used to analyze the predictive value of relevant indicators for the occurrence of IRI in STEMI patients. Results The serum levels of Sestrin2 and MDA were significantly higher in the STEMI group than those in the control group, and the serum level of SOD was significantly lower than that in the control group (P＜0.01). The serum levels of Sestrin2, MDA and cardiac troponin (cTnI) were significantly higher in the IRI group than those of the non-IRI group, and the serum SOD level was significantly lower than that of the non-IRI group (P＜0.01). Serum Sestrin2 level was positively correlated with MDA level in STEMI patients, and it was negatively correlated with serum SOD level (P＜0.05). Multivariate Logistic regression analysis showed that high serum levels of Sestrin2 and MDA were risk factors for IRI in STEMI patients, while high SOD level was protective factors (P＜0.05). The ROC analysis showed that the areas under the curve of serum Sestrin2, MDA and SOD for predicting the risk of IRI in STEMI patients were 0.759 (95%CI: 0.673-0.845), 0.654 (95%CI: 0.557-0.751) and 0.671 (95% CI: 0.575-0.767), respectively, and serum Sestrin2 had the highest predictive value. Conclusion The expression of Sestrin2 is abnormally high in STEMI patients, and its expression level is closely related to the occurrence of IRI in patients. [ABSTRACT FROM AUTHOR]

Objective To explore the medication for lung cancer treatment at Hubei Cancer Hospital. Methods The electronic cases of 3 234 hospitalized lung cancer patients in Hubei Cancer Hospital were collected. The medication of the Peiyuan Guben method in treating lung cancer was analyzed with cluster and association analyses by the Apriori association rule algorithm in IBM SPSS modeler 18.0 and Qihuang data AI workstation software system. Results In the 11 293 pieces of traditional Chinese medicine used in 3 234 patients with lung cancer, the core prescription of 16 core drugs were Astragalus, Coix seed, Poria, Coke hawthorn, Ligustrum lucidum, Wolfberry, Bran fried atractylodes, Mushroom stem, Bran fried citrus husk, Bittersweet herb, Centipede, Rhodiola, Semiaquilegia adoxoides, Seaweed, Prunella and Pseudobulbus cremastrae seu pleiones. Conclusion 'Peiyuan Guben' is an effective method of traditional Chinese medicine in treating lung cancer. Traditional Chinese medicine with the effects of Yiqi Jianpi and Bushen Yijing has an evident curative effect in treating lung cancer and can improve patients’ quality of life. [ABSTRACT FROM AUTHOR]

Copyright of China Tropical Medicine is the property of China Tropical Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to explore the laws of growth, photosynthesis and NPK distribution of ornamental Gardenia jasminoides under different shading treatments. The experiment was conducted to set five different shadings on the three G. jasminoides through shading treatment (0%, 60%, 70%, 80%, 90%). The effects of different shading treatments on the planting effect of ornamental G. jasminoides were studied. Through the statistics and analysis of ornamental G. jasminoides growth, photosynthesis and N, P, K contents of various organs. The results were as follows: (1) G. jasminoides ‘Grandiflora' with shading rates of 60% and 0%, G. jasminoides ‘Radicans' with shading rates of 80% and 70%, and G. jasminoides ‘Variegata' with a shading rate of 0% grow better.(2) With the increase of shading rates, the Pn, Ci and Tr of G. jasminoides ‘Radicans' and G. jasminoides ‘Variegata' gradually decreased, and Gs and WUE reached the maximum value at 60% shading rate. (3) G. jasminoides ‘Grandiflora' had the highest total N content, and the organ N content was ranked as leaf, root and stem; G. jasminoides ‘Radicans' had the highest total P content, and the organ P content was ranked as root, stem and leaf; G. jasminoides ‘Grandiflora' had the highest K content at 90% shading rate. The results of the review show that G. jasminoides ‘Radicans' is more resistant to shading and is suitable for growth under 80% and 70% shading treatments. G. jasminoides ‘Grandiflora' is the second, suitable for growth under 60% and 0% shading treatments. G. jasminoides ‘Variegata' is the least tolerant and suitable for growth under 0% shading treatment. [ABSTRACT FROM AUTHOR]

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A new type of Cu4I4（Gly）4 blue-violet luminescent complex based on metal-ligand charge transfer（MLCT） transition was synthesized by solvent volatilization method. Through fourier infrared spectroscopy, themogravimetric curve graph, X-ray diffraction spectroscopy, scanning electron microscope analysis, X-ray photoelectron energy spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy and fluorescence spectroscopy, to study the crystal structure and luminescence properties of the luminescent complex. The results show that the luminescent complex constructed by copper iodide clusters and glycine is a tetragonal crystal structure, and the space group is F4̅3 m. Under the excitation of 397 nm light, the d-d level transition of CuⅠ produced by the Cu4I4（Gly）4 luminescent complex emits the strongest blue-violet light at 423 nm. Glycine is coordinated with the luminescent center of the copper iodide cluster to increase the luminescence When the temperature is increased from 298 K to 373 K, the fluorescence intensity still maintains 60.17% of the initial luminescence intensity. The fluorescence decay lifetime of the luminescent complex is 517 ns, and the color coordinates（0.157 7, 0.031 8） are located at in the blue-violet region, the color purity is as high as 92%.In summary, the luminescent complex has excellent luminescence properties and good thermal stability, and is a new type of luminescent anti-counterfeiting material with broad application prospects. [ABSTRACT FROM AUTHOR]

Copyright of Imaging Science & Photochemistry is the property of Imaging Science & Photochemistry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Tropical Medicine is the property of China Tropical Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai University / Shanghai Daxue Xuebao is the property of Journal of Shanghai University (Natural Sciences) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Hepatology / Linchuang Gandanbing Zazhi is the property of Journal of Clinical Hepatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this study, the QuEChERS method was modified for simultaneous determination of imidacloprid, azoxystrobin, fenbuconazole, difenoconazole, chlorpyrifos and β-cypermethrin residues in peach leaf, peach fruit and soil by ultra-performance liquid chromatography/gas chromatography tandem mass spectrometry. The results showed that the average recoveries of the six pesticides in three matrices were between 72% and 111% with the relative standard deviations（RSDs, n = 5） between0.90% and 18% at spiking levels of 0.05-20 mg/kg（peach leaves）, 0.05-2 mg/kg（peach fruits） and 0.05-5 mg/kg（soil）. In the non-bagging treatment group, pesticides were mainly deposited in peach leaves after application, followed by soil and peach fruits, which accounted for 57%-69%, 25%-39% and 3%-6%, respectively. Moreover, the ultimate residues of the six pesticides on the 14 th and 21 st days after the second application were（0.07 ± 0.01）-（0.77 ± 0.13） mg/kg and <0.05-（0.27 ± 0.05） mg/kg,accounting for 15%-60% and 9%-34% of the corresponding MRL values, respectively. Fruit bagging significantly decreased the initial deposits and ultimate residues of six pesticides in peach fruits. In the bagging treatment group, the percentage of initial deposition of the six pesticides on peach fruit were <1%, and the ultimate residues at 14 and 21 days was lower than 10% of MRL value regulated by China.This study clarified the effects of fruit bagging on deposition and residues of six pesticides, and provided a theoretical basis for guiding the safe use of fruit bagging measures in peach orchards. [ABSTRACT FROM AUTHOR]