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Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture 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 Paint & Coatings Industry (0253-4312) is the property of Paint & Coatings Industry 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 elucidate community structures and dynamic changes of culturable symbiotic fungal colony in roots of Quercus mongolica, the symbiotic fungi in roots of young Q. mongolica at different ages were isolated directly. The isolated fungi were identified based on the morphological characteristics of colony and molecular analysis. The results were as follows: (1) A total of 249 fungal strains were isolated from the roots of young Q. mongolica, 18 species belonging to 15 genera, 8 families, 7 orders, 5 classes and 2 phyla were recognized. Among them, two species belonged to Basidiomycetes and 16 species belonged to Ascomycota. Pezicula pruinosa was the species with the highest isolation frequency (81.93%), followed by Dactylonectria torresensis (4.02%), Ilyonectria robusta (2.01%) and Atrocalyx nordicus (2.01%) . (2) Significant differences in species and quantities of symbiotic fungi demonstrated in different ages of young Quercus mongolica, with the highest frequency of isolation occurring in the 4-5 years old (44.98%) followed by the triennial (29.32%), biennial (19.68%) and annual (6.02%) . To sum up, culturable symbiotic fungi in the roots of young Q. mongolica on Liupan Mountain are highly diverse. Species and quantities of isolates vary at different ages of trees, the diversity increases with the growth of tree, and Pezicula pruinosa is the most dominant culturable symbiotic fungi in roots of young Quercus mongolica. The results provide the reference for further investigating symbiotic fungal resources and exploring the microbial symbiotic mechanism of Q. mongolica in adapting to local environment. [ABSTRACT FROM AUTHOR]

Objectives: Ensuring the smooth through of dozens of long tunnels on the major transportation hub project in west is a difficult problem in the construction of the major transportation hub project in west. There is a vertical deviation between the positioning results of global navigation satellite system (GNSS) and the results of the total station survey conducted inside the tunnel, which will affect the accuracy of the survey. Therefore, it is particularly important to calculate and analyze the vertical deviation and the resulting tunnel penetration error for the planned stations and key tunnel areas of major transportation hub project in the west. Methods: Three sets of ultra-high-precision gravity field models (GECO model, EIGEN-6C4 model and SGG-UGM-2 model) with a maximum order of 2 190 are used to calculate the vertical deviation of the area along the major transportation hub project in west, especially the planned stations. For the key tunnel area, the influence of the tunnel penetration error caused by the deviation of the vertical line is calculated and analyzed under the condition of different vertical angles of the control point outside the tunnel. Re⁃ sults: The experimental results show that: (1) The vertical deviation along the major transportation hub project in west has a larger meridian component, which is about 20″, and the prime vertical component is below 1″; (2) Between the three gravity field models, the maximum difference of the vertical deviation between any two models is 0.04″, the minimum is 0″, the average difference is 0.005″, the maximum difference of the meridional component is 0.6″, the minimum is 0″ and the average difference is 0.08″; (3) In the selected 6 key tunnel areas, when the vertical angle of the entrance is 45º, the horizontal penetration error caused by the vertical deviation of the important tunnel areas in the major transportation hub project in west planning is 170-190 mm. When the vertical angle of the entrance outside the hole is 35º, the lateral penetration error value is 120-140 mm. When the vertical angle of the entrance is 25º, the lateral penetration error value is 90-100 mm. When the vertical angle of the entrance is 15º, the lateral penetration error value is 60- 70 mm. Conclusions: (1) The calculation results of GECO model, EIGEN-6C4 model and SGG-UGM-2 model are basically the same, and the difference is small. The slight difference is mainly caused by the different data sources and model solution methods of the three groups of models. (2) The vertical deviation of important tunnel areas in the major transportation hub project in west planning is very large, which will bring about the lateral through error of the tunnel far beyond the allowable value. The vertical angle of the control points outside the tunnel can directly determine the influence of the vertical deviation on the horizontal penetration error of the tunnel. In the actual construction process of major transportation hub project in west, it should be ensured that the control points outside the tunnel are buried on the contour surface as far as possible. If the vertical angle between the control points cannot be adjusted due to geological conditions, the vertical deviation must be corrected to weaken the influence of the penetration error, so as to ensure the smooth penetration of the tunnel. [ABSTRACT FROM AUTHOR]

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing 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 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 Geomatics & Information Science of Wuhan University is the property of Geomatics & Information Science of Wuhan 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.)

为探索高含量中长链脂肪酸甘油三酯（MLCT）和低成本的酶法催化合成MLCT工艺，以一级菜籽油为原料，采用脂肪酶Lipozyme TL IM酶法催化酯交换合成MLCT，采用单因素试验研究了底物配比（菜籽油与中链甘油三酯质量比）、反应时间、反应温度、酶添加量对酯交换反应的影响，在此基础上，通过正交试验对MLCT合成工艺条件进行优化。结果表明，最佳的MLCT合成工艺条件为底物配比 3∶ 1、反应时间4 h、反应温度50℃、酶添加量8%（基于底物的质量），在此条件下MLCT含量达到87.50%。优化的MLCT合成工艺具有MLCT含量高，反应时间短、反应温度低的优势，可降低能耗及减少酶失活，从而降低了生产成本。 To explore the enzymatic catalytic synthesis process of medium long-chain fatty acid triglyceride (MLCT)with high MLCT content and low cost, lipase Lipozyme TL IM enzymatic catalytic transesterification was used to synthesize MLCT using first-grade rapeseed oil as raw material, and the effects of substrate ratio(mass ratio of rapeseed oil to medium chain triglycerides), reaction time, reaction temperature and enzyme dosage on transesterification reaction were investigated by single factor experiment. Then the synthesis process conditions were optimized by orthogonal experiment. The results showed that the optimal synthesis process conditions were obtained as follows: substrate ratio 3∶ 1, reaction time 4 h, reaction temperature 50℃, and enzyme dosage 8%(based on the mass of substrate), and the MLCT content reached 87.50% under the optimal conditions. The optimized process has advantages of high MLCT content, short reaction time and low reaction temperature, which can reduce energy consumption and enzyme inactivation, thus reducing the production cost.

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.)

At present, animal production still faces the problem of diseases caused by viruses, bacteria, and parasites. However, the frequent use of antibiotics has a negative impact on the environment, and the drug resistance of farmed animals is gradually increasing. Since the comprehensive ban on antibiotics, the search for alternatives to antibiotics has received increasing attention. Finding green and pollutionfree alternatives to antibiotics is crucial for the development of animal husbandry and feed industry. Manno oligosaccharides (MOS), as a green feed additive obtained from yeast cultured cells, are environmentally friendly and pollution-free. They are added in small doses, naturally residue free, and have strong stability. They can regulate the gut microbiota environment, improve animal immunity, enhance animal antioxidant capacity, alleviate inflammation, regulate lipid metabolism, and promote animal growth performance. Enhancing the systemic and local immune systems, enhancing intestinal integrity and function, and stimulating the innate immune system are all modes of action of MOS in animals. However, the effect of MOS in actual production is not entirely consistent. The structure, correct dosage, addition method and duration of MOS, as well as the type, growth stage, and breeding conditions of breeding animals, are all factors that affect the effect of MOS. In addition, the combination of MOS with other functional additives and the use of probiotics can achieve more significant results. This article elaborates and summarizes the physical and chemical properties, chemical structure, biological functions, and applications of MOS in the production of poultry, pigs, ruminants, and aquatic animals, providing a theoretical basis for further promoting the application of MOS in animal production. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 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 Agricultural Archaeology is the property of Agricultural Archaeology 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 Chemical Engineering (China) / Huaxue Gongcheng is the property of Hualu Engineering Science & Technology 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.)

Against the backdrop of the rapid development of information technology, globalization of markets and increasing business competition, the range of goods and services and the complexity of decision-making that consumers face when making shopping choices have grown significantly. In particular, the rapid growth of e-commerce and the popularization of online shopping have greatly broadened consumers' choice space, while at the same time subverting the traditional shopping paradigm, making it possible to shop regardless of time and location. The accompanying challenge is that along with the dramatic increase in the number of products available, choice overload has gradually become a problem for consumers. The information processing burden brought about by product diversification increases the complexity and time-consuming nature of information screening, comparison and evaluation in the decision-making process. This not only tests consumers' decision-making ability, but sometimes even leads to increased hesitation and difficulty in decision-making. In the face of seemingly unlimited choices, consumer confusion and anxiety may intensify, which may ultimately cause decision fatigue and decreased decision satisfaction. Therefore, in a digital business environment, deep insights into how consumers make choices in the midst of huge amounts of information and how these choices affect their decision satisfaction are of key importance for research and marketing strategy development. In view of this, in order to investigate the impact of selection set size on decision satisfaction in an apparel online shopping scenario, as well as the role of consumer confusion and moderation patterns in this relationship, this study was based on choice overload theory, and a simulated online shopping platform was constructed by using web development technology with 736 online shoppers as subjects. First, the choice overload critical values at which consumer decision satisfaction shifts were clarified by using the logistic regression model. In the context of using shirts and canvas shoes as experimental items, when the number of options in the selection set increased to 15, consumer decision satisfaction reached the highest point, revealing a nonlinear relationship between the number of choices and decision satisfaction. This finding provides an empirical basis for defining the boundaries of consumer choice overload and provides a benchmark for variable setting in subsequent experiments. Further, by designing a controlled experiment and utilizing Model 4 in the SPSS macro, we explored how consumer confusion plays a mediating role in the formation of decision satisfaction under the influence of selection sets of different sizes. The empirical study shows that consumer confusion partially mediates the effect between selection set size on decision satisfaction, revealing the subtle changes in consumers' mental states and decision-making impact when they deal with huge amounts of information. Based on the mediating effect, this study also focuses on how moderation patterns affect the relationship between consumer confusion and decision satisfaction. By utilizing Model 8 in the SPSS macro, it was revealed that the moderation model plays a significant moderating role in the effects of different selection set sizes on decision satisfaction. In particular, the moderating pattern is especially evident in the assessment model, emphasizing the importance of information processing strategies in the decision-making process. In summary, this study provides insights into the changes in consumer decision satisfaction under choice overload by combining empirical research with a simulated online shopping environment. This study not only clarifies the mediating role of consumer confusion, but also explores the moderating role of the moderating mode, which provides insights for apparel companies in formulating product line strategies and implementing marketing. Companies are expected to recognize the existence of the choice overload effect and its impact on the consumer decision-making process, and further attention shall be paid to the management and optimization of their product lines as a way to alleviate the complexity and uncertainty of the consumer's choice, so as to reduce the complexity and uncertainty of consumers' choices, and to improve their overall satisfaction with the results during and after the choice process. Meanwhile, it has practical significance for optimizing the product display and recommendation mechanism of e-commerce platforms, as well as improving consumers' shopping experience. This study reinforces the necessity of paying attention to the psychology of consumer decision-making in marketing strategies, and provides a scientific basis for the apparel industry and other retail sectors to manage product lines and improve customer satisfaction in the digital transformation. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Refrigeration is the property of Journal of Refrigeration 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 Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control 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 Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources 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 Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic 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 Shipin Kexue/ Food Science is the property of Food Science 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 Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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 recent years, the theory and practice of emergency management in public hospitals have been widely discussed in domestic academic circles. Based on 616 literatures on public health emergency management in public hospitals from 2003 to 2023 in the CNKI journal database, this paper used a scientific bibliometric method to trace the current status, hot spots and development trends of public health emergency management research in Chinese public hospitals. The results showed that the number of research literature in this field has increased in general, with the outbreak of COVID-19 as the separating point to form a period of low stability and explosive growth, and several influential research authors and research institutions emerged. Emergency management, public hospitals, emergencies, emergency capacity, emergency rescue and emergency evaluation have become hot topics in this field. Among them, the construction of emergency management system, emergency capacity evaluation, and emergency response strategies of public hospitals have become the main focus of research. In the future, it is necessary to expand the scope of research themes, strengthen the theoretical system and interdisciplinary research of public health emergency management in public hospitals, enrich research methods and strengthen cooperation. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She 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 Chinese Institute of Food Science & Technology / Zhongguo Shipin Xuebao is the property of Journal of Chinese Institute of Food Science & Technology Periodical 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 South Architecture / Nanfang Jianzhu is the property of South Architecture 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 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.)

Objective To investigate the effect of protein arginine methyltransferase 5（PRMT5) targeting replication protein A2（RPA2) on the activity and invasion of lung adenocarcinoma cells based on NF-κB p65 signaling pathway. Methods Lung adenocarcinoma cell lines A549 and H1299 were selected and randomly divided into the blank control group, plasmid control group, RPA2 high expression group, PRMT5 silencing group, PRMT5 silencing + RPA2 high expression group. Cells in the plasmid control group were transfected with negative control siRNA, RPA2 high expression group with pcDNA3. 1/RPA2, PRMT5 silencing group with PRMT5 siRNA, and PRMT5 silencing + RPA2 high expression group with PRMT5 siRNA and 10 µg pcDNA3. 1/RPA2. Stable transfected cells were then screened with purinomycin. Cells in the blank control group were cultured without transfection. CCK-8 was used to detect cell activity, Transwell assay was used to detect cell invasion ability, and Western blotting was used to detect PRMT5, RPA2, p-IκBα, p-NF-κB p65 protein expression. Results In A549 cells and H1299 cells, the expression of PRMT5 and RPA2 protein, cell activity and invasion ability of the RPA2 high expression group were higher than those of the blank control group and plasmid control group. PRMT5 and RPA2 protein expression, cell activity and invasion ability in the PRMT5 silencing group were lower than those in blank control group and plasmid control group (all P<0. 05) . PRMT5 and RPA2 protein expression, cell activity and invasion ability of the PRMT5 silencing group and PRMT5 silencing + RPA2 high expression group were lower than those of the RPA2 high expression group (all P<0. 05) . PRMT5 and RPA2 protein expression, cell activity and invasion ability in the PRMT5 silencing + RPA2 high expression group were higher than those in the PRMT5 silencing group (all P<0. 05) . In A549 cells and H1299 cells, the expression of p-IκBα and p-NF-κB p65 protein in the RPA2 high expression group was lower than that in the blank control group and plasmid control group, and the expression of p-IκBα and p-NF-κB p65 protein in the PRMT5 silencing group was higher than that in the blank control group and plasmid control group (all P<0. 05) . The protein expression levels of p-IκBα and p-NF-κB p65 in the PRMT5 silencing group and PRMT5 silencing + RPA2 high expression group were higher than those in the RPA2 high expression group (all P< 0. 05) . The protein expression levels of p-IκBα and p-NF-κB p65 in the PRMT5 silencing + RPA2 high expression group were lower than those in the PRMT5 silencing group (all P<0. 05) . Conclusion PRMT5 enhances the activity and invasion ability of lung adenocarcinoma cells by targeting RPA2, and its mechanism is related to the activation of NF-κB p65 signaling pathway. [ABSTRACT FROM AUTHOR]

Starting with the regulations and specific practices of pesticide re-evaluation, this paper provided a detailed overview of the types, target scope, participating departments, initiation conditions, implementation steps, and data requirements of pesticide re-evaluation projects in the European Union and the United States of America. The relationship between pesticide re-evaluation and new registration, as well as the protection of re-evaluation information, were discussed, which could provide a reference for establishing suitable re-evaluation procedures and improving the scientific and operational management of existing registered pesticides in China. [ABSTRACT FROM AUTHOR]

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental 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 South China Fisheries Science is the property of South China Fisheries Science 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 Geodesy & Geodynamics (1671-5942) is the property of Editorial Board Journal of Geodesy & Geodynamics 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 Guihaia is the property of Guihaia 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 Synthetic Fiber Industry is the property of Sinopec Baling Petrochemical Company 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 Petroleum Geology & Oilfield Development in Daqing is the property of Editorial Department of Petroleum Geology & Oilfield Development in Daqing 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 China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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 Urban Geology is the property of Urban Geology 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 compare and analyze the effects of different orthodontic methods on the expression of salivary chemokines, gingival crevicular fluid inflammatory factors, and periodontal health in adolescent orthodontic patients. Methods: A total of100 adolescent patients treated with orthodontic treatment in our hospital from January 2020 to January 2023 were selected. A retrospective analysis was conducted using a random number table method. Among them, 30 patients were treated with Twin Block appliances and divided into a Twin Block group. 30 patients were treated with a straight wire appliance and divided into a straight wire arch group.40 patients were treated with a non bracket concealed appliance and divided into a non bracket group. Compare the corrective effects of three groups of patients, including changes in salivary chemokines, gingival crevicular fluid inflammatory factors, and periodontal health indicators before and after treatment. Results: Masticatory function, aesthetics, comfort, and convenience satisfaction scores were higher than those in the Twin-Block and straight silk arch groups (P＜0.05) ; After the correction correction, The levels of CXCL13, CXCL11, CXCL10, and CXCL 8 related salivary chemokines in the no-bracket group were lower than those in the straight and Twin-Block groups, The Twin-Block group was lower than the straight silk arch group (P＜0.05) ; After the correction in the three groups of patients, The expression levels of IL-1β and TNF-α in the no-free group were lower than the straight filament arch group and Twin-Block group, The Twin-Block group was lower than the straight silk arch group (P＜0.05) ; After the correction correction, CAL, PD, BI and PLI levels were lower in the no less group than in the straight silk arch and Twin-Block group, The Twin-Block group was lower than that in the straight silk arch group (P＜0.05) . Conclusion: Invisible bracketless orthodontic appliances in adolescent orthodontic treatment patient satisfaction is better than Twin-Block orthodontic appliances and straight arch orthodontic appliances, but invisible bracketless orthodontic appliances in the treatment process of the patient’s salivary chemokines, gingival response and periodontal health level of the impact of less, the clinic can be in accordance with the patient’s economic situation and the degree of aesthetics of the requirements of a comprehensive choice. [ABSTRACT FROM AUTHOR]