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针对发射端频率选择性IQ（同相/正交相）不平衡对CO-OFDM（相干光正交频分复用）系统传输性能的影响,提出一种基于DF（判决反馈）的IQ不平衡估计算法,并与传统的PA（导频插入）算法进行了对比。仿真研究和理论推演表明,所提算法可以有效地估计IQ不平衡和信道参数,提高系统的BER（误码率）性能。

为促进油茶产业高质量发展，丰富我国食用植物油供给体系，根据2010—2020年的数据，采用综合比较优势法分析我国16个油茶生产区域的比较优势，对其影响因素进行研究，并提出相应的提质增产的建议。结果表明：2010—2020年，中国油茶生产规模呈现出东西部增长，中部下降的特征；中国16个油茶生产区域生产规模优势总体波动较小，效率优势呈先降后升趋势，效益优势、综合比较优势总体呈下跌状态。根据油茶生产区域的规模、效率、效益优势情况，将16个油茶生产区域划分为“三高省区”“规模优势省区”“效率优势省区”等7种类型，其中湖南、江西、浙江属于“三高省区”，广东、广西、福建属于“规模优势和效率优势双高省区”，云南属于“规模优势省区”，湖北、海南、江苏属于“效率优势和效益优势双高省区”，贵州、陕西属于“效率优势省区”，安徽属于“效益优势省区”，四川、重庆、河南属于“三低省区”。各省区油茶生产受自然资源禀赋、科技水平、市场、政策等因素影响，建议通过优化种植区域布局、完善油茶市场体制、加速新品种研发、提高机械化程度等措施进一步缩小油茶生产区域间的优势差异。In order to promote the high-quality development of the Camellia oleifera industry and enrich China′s edible vegetable oil supply system, according to data from 2010 to 2020, the comparative advantage of 16 Camellia oleifera production areas in China was analyzed using the comprehensive comparative advantage method, and the influencing factors were studied. Corresponding suggestions to improve quality and increase production were proposed. The results showed that from 2010 to 2020, the production of Camellia oleifera in China showed the characteristics of "increasing in the East and West", "decreasing in the Middle". The scale advantage of China′s 16 Camellia oleifera production areas fluctuated slightly in general, the efficiency advantage first decreased and then increased, and the benefit advantage and comprehensive advantage generally declined. According to the scale, efficiency and benefit advantages of Camellia oleifera production areas, the 16 Camellia oleifera production provinces(regions) were divided into seven types, in which Hunan, Jiangxi, and Zhejiang belonged to the "Three High Provinces"; Guangdong, Guangxi, and Fujian belonged to the "Dual High Provinces with Scale and Efficiency Advantages"; Yunnan belonged to the "Scale Advantage Province"; Hubei, Hainan, and Jiangsu belonged to the "Dual High Provinces with Efficiency and Benefit Advantages"; Guizhou and Shaanxi belonged to the "Efficiency Advantage Province"; Anhui belonged to the "Benefit Advantage Province"; Sichuan, Chongqing, and Henan belonged to the "Three Low Provinces". The production in the Camellia oleifera was influenced by natural resource endowment, technological level, market factors, and policy factors. The advantageous differences between production areas can be reduced by optimizing the layout of planting areas, improving the Camellia oleifera market system, accelerating the development of new varieties, and improving the degree of mechanization.

Copyright of Chinese Journal of Pathophysiology is the property of Jinan University, School of Medicine 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 Applied Chemistry is the property of Chinese Journal of Applied Chemistry 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.)

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Copyright of Journal of Poyang Lake is the property of Journal of Poyang Lake 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.)

BACKGROUND: Pulp regeneration has been a hot and difficult research topic in recent years, and the construction of composite bio-scaffolding materials provides new ideas and methods for pulp regeneration. OBJECTIVE: To observe the effect of freeze-dried gelatin modified by methacrylic anhydride/treated dentin matrix bioactive scaffolds on proliferation, migration, and osteogenic differentiation of human dental pulp stem cells. METHODS: The mass ratios of gelatin modified by methacrylic anhydride and treated dentin matrix at 2:1, 1:1 and 1:2 were obtained by dispersing different masses of treated dentin matrix into gelatin modified by methacrylic anhydride solution. The gelatin modified by methacrylic anhydride/treated dentin matrix bioactive scaffolds were prepared by vacuum freeze-drying. The microstructure, water absorption, and mechanical properties of the scaffolds were measured. Human dental pulp stem cells were cultured with different mass ratios of scaffold extract and DMEM (control group) to detect cell proliferation and migration. Human dental pulp stem cells were cultured with different mass ratios of scaffold extract + osteogenic induction solution and DMEM + osteogenic induction solution (control group), and their osteogenic ability was analyzed by alkaline phosphatase staining. RESULTS AND CONCLUSION: (1) Under scanning electron microscopy, the scaffolds of the three groups all had porous structures. The porosity of the scaffolds increased with the increase of treated dentin matrix quality, and there was significant difference between the two groups (P < 0.05). The water absorption of scaffolds increased with the increase of treated dentin matrix mass, and there was significant difference between groups (P < 0.05). The compressive strength and shear strength of the scaffold increased with the increase of the mass of treated dentin matrix. (2) CCK-8 assay showed that after 3, 5, and 7 days of culture, the cell proliferation absorbance values in the 2:1, 1:1, and 1:2 scaffold groups were higher than those in the control group (P < 0.05). The cell proliferation absorbance values increased with the increase of treated dentin matrix mass in the scaffold (P < 0.05). The cell scratch test showed that the cell migration rate in the 2:1, 1:1, and 1:2 scaffold groups was higher than that in the control group (P < 0.05), and the cell migration rate increased with the increase of treated dentin matrix mass in the scaffold (P < 0.05). (3) Alkaline phosphatase staining showed that the osteogenic differentiation ability of cells in the 2:1, 1:1, and 1:2 scaffold groups was stronger than that in the control group, and the osteogenic ability of cells was enhanced with the increase of treated dentin matrix mass in the scaffold. (4) The results showed that the scaffold with a mass ratio of 1:2 between gelatin modified by methacrylic anhydride and treated dentin matrix was the most suitable for the proliferation and differentiation of dental pulp stem cells. [ABSTRACT FROM AUTHOR]

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Copyright of Plateau Meteorology is the property of Plateau Meteorology 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.)

Background Due to the prominent particularity of medical work, nurses are prone to developing depression, which not only poses a considerable threat to the physical and mental health of nurses, but also affects the quality of nursing to some extent. Occupational stress is a known contributor to depression in nurses, whereas relatively little research has been done to investigate the underlying mediation path. Objective To explore the mediation effect of perceived organizational support and psychological capital on the relationship between occupational stress and depression among nurses, and to provide theoretical references for the prevention and treatment of occupational stress-induced depression in nurses. Methods From March to August 2019, a stratified random sampling method was utilized to select a sample size of 720 nurses in each department of a grade A tertiary hospital in Shandong Province. All subjects were assessed using Effort-Reward Imbalance Questionnaire (ERI), Perceived Organization Support Questionnaire (POS), Psychological Capital Questionnaire (PCQ) and Center for Epidemiologic Studies Depression Scale (CES-D). Pearson correlation was adopted to examine the correlation among above scales, and multilevel mediation analyses were conducted with model 6 in Process macro (version 3. 3) for SPSS 26. 0 using Bootstrap re-sampling method. Results A total of 658 nurses (91. 39%) completed the effective questionnaire survey. ERI score was positively correlated with CES-D score (r=0. 499, P<0. 01), and negatively correlated with POS and PCQ scores (r=-0. 318, -0. 275, P<0. 01). POS score was positively correlated with PCQ score (r=0. 455, P<0. 01), and negatively correlated with CES-D score (r=-0. 401, P<0. 01). PCQ score was negatively correlated with CES-D score (r=-0. 567, P<0. 01). The total effect value of occupational stress on depression was 0. 466（95% CI: 0. 399~0. 534). Perceived organizational support (indirect effect value of 0. 027, 95% CI: 0. 006~0. 057) and psychological capital (indirect effect value of 0. 059, 95% CI: 0. 013~0. 120), separately from each other, mediated the relationship between occupational stress and depression, and a chained mediation effect of perceived organizational support and psychological capital was also demonstrated (indirect effect value of 0. 051, 95% CI: 0. 031~0. 082), accounting for 10. 94% of the total effect. Conclusion Occupational stress is a influencing factor of nurses' depression, which can affect the occurrence of depression both directly and indirectly through either separate or chained mediation of perceived organizational support and psychological capital. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine 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 Acta Petrologica et Mineralogica / Yanshi Kuangwuxue Zazhi is the property of Acta Petrologica et Mineralogica 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 Wildland Fire Science is the property of Journal of Wildland Fire Science 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 Journal of Functional Materials / Gongneng Cailiao is the property of Chongqing Functional Materials Periodical Press 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 Aeronautical Materials is the property of Editorial Board of Journal of Aeronautical Materials 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 Uranium Mining & Metallurgy is the property of Uranium Mining & Metallurgy 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 China University of Petroleum is the property of China University of Petroleum 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 Plateau Meteorology is the property of Plateau Meteorology 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 Engineering for Thermal Energy & Power / Reneng Dongli Gongcheng is the property of Journal of Engineering for Thermal Energy & Power 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 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 Nonferrous Metals Engineering is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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 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.)

目的 探讨应用Trevo ProVue支架对前循环脑动脉急性闭塞进行支架取栓治疗的安全性及有效性。 方法 回顾本中心13例采用Trevo ProVue支架取栓治疗前循环脑动脉急性闭塞患者的临床资料。应 用改良脑梗死溶栓（modified thrombolysis in cerebral infarction，mTICI）分级评估闭塞血管再通情 况，比较患者术前及术后24 h美国国立卫生研究院卒中量表（National Institute of Health stroke scale， NIHSS）评分。并于术后90 d进行临床随访，采用改良Rankin量表（modified Rankin scale，mRS）评分评 估患者独立生活情况。 结果 13例患者中，术后即刻8例获得mTICI分级2b～3级再通，4例mTICI分级2a级再通，1例血管无法开 通mTICI分级0级。患者入院时NIHSS评分15.0（9.5～21.0）分，术后24 h NIHSS评分7.0（5.5～16.0）分， 比较差异具有统计学意义（t =2.38，P =0.035）。90 d临床随访，mRS评分0～2分6例（46.15%），3分2 例，4分2例，5分1例，6分（死亡）2例。 结论 应用Trevo ProVue支架取栓治疗前循环脑动脉急性闭塞是安全、有效的。 Abstract: Objective To assess the safety and effectivity of mechanical thrombectomy using Trevo ProVue stents for acute arterial occlusion in proximal anterior cerebral circulation. Methods This retrospective study included 13 consective patients with acute arterial occlusion in anterior cerebral circulation and treated by thrombectomy using Trevo ProVue stents. Revascularization status of the occluded arteries were evaluated using modified thrombolysis in cerebral infarction (mTICI) scale. The National Institute of Health stroke scale (NIHSS) score of all patients before operation and 24 hours after operation were compared. The functional outcome at 90 days were assessed using modified Rankin scale (mRS) score. Results Of 13 patients, 8 cases reached successful reperfusion (mTICI 2b/3), 4 cases reached a recanalization of mTICI 2a, and the occluded artery couldn’t be opened only in 1 case. The NIHSS score of patients on admission was 15.0 (9.5-21.0), the NIHSS score was 7.0 (5.5-16.0) 24 hours after operation, and there was significant difference between the two scores (t =2.38, P =0.035). The clinical follow-up results at 90 days showed that six patients had a mRS score of 0-2, four patients had a mRS score of 3-4, one patient had a mRS score of 5, and two patients had a mRS score of 6. Conclusions Mechnical thrombectomy with Trevo ProVue stents for acute arterial occlusion in anterior cerebral circulation is safe and effective.

Copyright of Electroplating & Finishing is the property of Electroplating & Finishing 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 Modern Food Science & Technology is the property of Editorial Office of Modern Food 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 Journal of East China University of Science & Technology is the property of Journal of East China University of Science & Technology 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 Chinese Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal 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 Applied Mechanics is the property of Chinese Journal of Applied Mechanics 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 study the effects of Hami melon variety, soluble solid content, sugar solution concentration, packaging method, shelf life and other factors on the processing quality of ultra-high pressure can. [Method] Taking fresh Hami melon Xizhoumi No.24, Xizhoumi No.21 and Huangzuixian as the test materials, taking the quality of Hami melon can as observation indices, the color difference and other indices during the shelf life of ultra-high pressure can of Hami melon were regularly measured every 5 days. [Result] The changes of color difference value ΔE of canned pulp of Xizhoumi No.24 with soluble solid content 13%, sugar concentration 45.0% and plastic bottle packaging, Xizhoumi No.21 with soluble solid content 14%, sugar solution concentration 45.0% and plastic bottle packaging, Huangzuixian with soluble solid content 14%, sugar solution concentration 45.0% and plastic bottle packaging during the shelf life were the lowest. [Conclusion] The changes of AE of canned pulp of Huangzuixian with the soluble solid content 14%, sugar solution concentration 45.0%, and plastic bottle packaging during the shelf life were the lowest, which better maintained the quality of Hami melon and effectively prolong the shelf life of Hami melon. [ABSTRACT FROM AUTHOR]

Objective: To explore the relationship between serum C peptide (CP), myelin basic protein (MBP), monocyte chemotactic protein-1 (MCP-1) levels and disease severity and prognosis in patients with acute cerebral infarction (ACI) combine with leukoaraiosis (LA). Methods: 117 patients with ACI combine with LA admitted to Suqian Hospital of Nanjing Gulou Hospital Group from March 2021 to March 2023 were selected as observation group, patients were divided into severe group (39 cases), moderate group (40 cases), and mild group (38 cases) according to the severity of LA. 120 healthy individuals who underwent physical examinations during the same period were selected as control group. Detected serum levels of CP, MBP, and MCP-1. Follow up patients with ACI combine with LA 6 months. The influencing factors of poor prognosis in patients with ACI combined with LA were analyzed by multivariate Logistic regression. The predictive value of serum CP, MBP and MCP-1 in ACI patients with LA was analyzed by receiver operating characteristic(ROC) curve. Results: Compared with control group, observation group had higher levels of MBP and MCP-1, lower levels of CP (P<0.05). Serum CP in severe group was lower than that in mild and moderate groups, and the levels of MBP and MCP-1 were higher than those in mild and moderate groups; Serum CP in moderate group was lower than that in mild group, and the levels of MBP and MCP-1 were higher than those in mild group (all P<0.05). Compared with good prognosis group, poor prognosis group had lower CP and higher MBP and MCP-1 (P<0.05). Multivariate logistic regression analysis showed that elevated NIHSS score, MBP, and MCP-1 were independent risk factors for poor prognosis in patients with ACI combine with LA, and elevated CP was a protective factor (P<0.05). ROC analysis results showed that the area under the curve (AUC) of CP, MBP, and MCP-1 combined predicting poor prognosis in patients with ACI combine with LA was 0.916, significantly higher than CP, MBP and MCP-1 alone. Conclusion: The serum CP of patients with ACI combine with LA is lower than that in healthy group, and the serum MBP and MCP-1 levels are higher than those in healthy group, and there is a close relationship between CP, MBP, and MCP-1 and the severity of the patient's condition. The combined detection of serum CP, MBP, and MCP-1 has high predictive value for the prognosis of patients with ACI combine with LA. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology 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 Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co 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.)

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Copyright of Practical Pharmacy & Clinical Remedies is the property of Editorial Department of Practical Pharmacy & Clinical Remedies 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.)

Copyright of Modern Educational Technology is the property of Editorial Board of Modern Educational Technology, Tsinghua University 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.)