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Copyright of Modern Urban Transit is the property of Modern Urban Transit 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 Natural Disasters 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.)

Objective: To investigate the clinical application value of recombinant bovine basic fibroblast growth factor (r-bFGF) eye gel as comeal protective agent in pterygium surgery. Methods: 100 patients with pterygium surgery who were admitted to our hospital from January 2019 to December 2020 were selected, and they were divided into control group (n=50) and study group (n=50) according to the random number table method. Pterygium excision combined with conjunctival flap transfer was used in all operations. The control group received routine treatment during operation, and the study group was combined with r-bFGF eye gel on the basis of the control group. The operation effect, ocular surface related indicators, visual acuity, intraocular pressure, adverse reactions and incidence of complications were compared in the two groups. Results: The visual pain simulation score (VAS) and ocular surface disease index (OSDI) in the two groups at 3 months after operation decreased, tear film rupture time (BUT) and basic tear secretion test (SIT) increased (P<0.05). The VAS and OSDI in the study group at 3 months after operation were lower than those in the control group, and BUT and SIT were higher than those in control group (P<0.05). The visual acuity in the two groups at 3 months after operation increased, and the intraocular pressure decreased (P<0.05). The visual acuity in the study group at 3 months after operation was higher than that in the control group, and the intraocular pressure was lower than that in the control group (P<0.05). There was no significant difference in the incidence of adverse reactions in two groups (P>0.05). The clinical cure rate in study group was significantly higher than that in control group (P<0.05). The complication rate in the study group was lower than that in control group (P<0.05). Conclusion: Recombinant bovine basic fibroblast growth factor eye gel can be used as comeal protective agent in pterygium surgery, which can reduce the postoperative pain of pterygium patients, improve the symptoms of canthus, visual acuity and intraocular pressure, and obtain a better clinical cure rate. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Clinical Pediatric Surgery is the property of Journal of Clinical Pediatric Surgery 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 Changzhou University (Natural Science Edition) / Changzhou Daxue Xuebao (Ziran Kexue Ban) is the property of Editorial Department of Journal of Changzhou 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.)

Aggregates are the crucial building blocks to form the foundation of soil structure for better soil stability. Moreover, the pore structure of aggregates can pose a great impact on the transport and distribution of solutes and gases, particularly on bioactivity and hydraulic characteristics. Many biotic and abiotic factors can also influence the pore system of soil aggregates. It is difficult to detect the pore structure at the aggregate level so far. The abiotic measures can also be one of the most important steps to determine the soil pore structure in recent years. However, there is still a relatively large current controversy on the effects of different long-term fertilization on the soil microstructure characteristics (porosity, pore size distribution, and tortuosity) and stability, due mainly to the different types of soils, fertilizer, crops, and tillage. Fortunately, a variety of Computed Tomography (CT) techniques combined with image analysis can provide the three-dimensional (3D) distribution of porosity and pore size for better investigation of the 3D microstructure of soil aggregates. Synchrotron-based X-ray micro-CT (SR-μCT) can be another excellent tool for the higher resolution, stronger contrast, and faster scanning speed during characterization. The objective of this study was to evaluate the impacts of long-term different patterns of fertilization (no fertilizer, inorganic fertilizer, and combination of organic and inorganic application) on the aggregate microstructure of the cinnamon soil aggregates in the cropland of North China using SR-μCT measurements. The soil aggregates with diameters of approximately 3-5 mm were collected from the cinnamon soil with a long-term fertilization trial established in 1992. Three types of soil aggregate samples (3-5 mm) within 0.10 m soil profiles were selected from each site and then were scanned at 4 μm voxel resolution with the Shanghai Synchrotron Radiation Facility (SSRF). The 3D pore structure was constructed to quantify using the digital image analysis software ImageJ. The locally adaptive thresholding was employed to segment the sub volumes in ImageJ software, where the thresholds were chosen using visual observation. The sub volume of 500×500×500 (voxel) was extracted to reduce the edge artifacts for further morphological analysis. A systematic evaluation was made of the aggregate water stability and the soil properties. The results showed that there were substantial changes in the pore microstructure and stability of soil aggregates in the study area after 26 years of different soil fertilization treatments. Among them, the indexes of soil aggregate porosity, large porosity, narrow porosity, average pore diameter, average tortuosity, average surface area of pore throat, and Average Mass Diameter (MWD) increased by 23.84%, 145.71%, 21.43%, 37.16%, 21.3%, 51.12% and 59.26%, respectively, during the long-term chemical fertilizer combined with organic fertilizer (OF) treatment, compared with the no fertilizer (CK). It infers that the long-term OF treatment significantly improved the microstructure and stability of the OF soil aggregates. As such, the surface runoff was easily infiltrated into the ground to relieve the impact on the soil matrix, thus making the soil structure more stable. There were similar microstructural characteristics and stability OF soil aggregates under long-term chemical fertilizer (NPK) and CK treatment, but significantly different from that under OF treatment. The finding can greatly contribute to quantifying the structure of the unique soil in the North China Plain. The different effects of diverse long-term fertilization measures on soil structure can also provide strong support to the agricultural soil quality evaluation and protection. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Fuzhou University is the property of Journal of Fuzhou University, 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 Shanghai Jiaotong University (Medical Science) is the property of Journal of Shanghai Jiaotong University (Medical Science) 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 Ballistics / Dandao Xuebao is the property of Journal of Ballistics 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.)

This study focused on the characteristics of soil heavy metal pollution in the middle area of the“One River and Two Tributaries” basin in Tibet. Four layers of soil, namely S1（0~10 cm）, S2（10~20 cm）, S3（20~30 cm）, and S4（30~40 cm）, at 41 points in the farmland soil were sampled; then, the concentrations of Cd, Cr, Cu, Hg, Pb, Zn, Ni, and Mn were determined. The sources of heavy metals were analyzed using the multivariate statistical method, and the soil heavy metal ecological risk was evaluated based on the geo-accumulation index, enrichment factor, and potential ecological risk index. The results showed that the concentrations of Cd, Cr, Cu, Pb, Zn, Ni, and Mn in soil layer S1 were higher, with mean values of 0.21, 82.95, 34.67, 35.81, 75.31, 49.99 mg·kg-1, and 697.39 mg·kg-1, respectively. The average concentration of each element in all four layers was lower than the risk screening values of soil contamination in farmland. The concentration of soil heavy metals decreased as the soil layer increased. Thus, the lowest concentration was observed in layer S4. Source analysis showed that Cd, Cu, and Pb in the surface（S1, S2, and S3）soil were mainly affected by human activities, while Cr, Ni, Zn, and Mn were mainly controlled by natural sources. Layer S4 was less affected by human activities, and the sources of its heavy metal elements were mainly natural. The ecological risk analysis showed that the geo-accumulation index, enrichment factor, and single ecological risk parameter of Cd in soil layer S1 were higher than those of the other elements with mean values of 0.790, 1.973, and 77.782, respectively. This indicated that layer S1 had significant contamination and a moderate ecological risk level. All the parameters of each element in the other soil layers were lower than those in layer S1, thereby implying that slight contamination and lower ecological risk. The average value of the comprehensive potential ecological risk index of the four soil layers was 103.959, thereby indicating that the soil in the study area was characterized by slight ecological risk. Generally, the quality of the soil in the study area was good, but the concentrations of Cd and Pb showed serious accumulation. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays 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 Ecology & Rural Environment is the property of Journal of Ecology & Rural Environment 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.)