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This paper mainly introduced the principle of mechanical activation, the application of mechanical activation in slow-release fertilizer, effect factors of mechanical activation on the characteristics of fertilizer, and the green evaluation methods of mechanical activation were reviewed.And the future research direction of mechanical activation was prospected, in order to provide reference for the realization of green production and efficient application of mechanical activation in fertilizer. [ABSTRACT FROM AUTHOR]

Copyright of Coal Geology & Exploration is the property of Xian Research Institute of China Coal 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.)

Copyright of Pearl River is the property of Pearl River 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 Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong Academy of Agricultural Sciences 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 Coal Geology & Exploration is the property of Xian Research Institute of China Coal 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.)

Copyright of Journal of Data Acquisition & Processing / Shu Ju Cai Ji Yu Chu Li is the property of Editorial Department of Journal of Nanjing University of Aeronautics & Astronautics 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 Experimental Technology & Management is the property of Experimental Technology & Management 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 Forest Research is the property of Forest Research 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 Forest & Environment is the property of Journal of Forest & Environment Editorial 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 effects of fertilization on the growth and photosynthesis in Heritiera littoralis seedlings, we used 2-year-old H. littoralis seedlings as plant material, and a pot experiment was set up with fertilization treatment of 6 levels, i.e., CK(0 g per plant), N1(10 g per plant), N2(15 g per plant), N3(20 g per plant), N4(25 g per plant)and N5(30 g per plant). This experiment lasted for 140 d, and the differences in growth, biomass, leaf chlorophyll content, photosynthetic parameters and chlorophyll fluorescence parameters were compared across different fertilization levels. The results were as follows:(1)The growth(seedling height and ground diameter), biomass(leaf, stem and root), leaf chlorophyll content [Chl a, Chl b and Chl(a+b)], leaf net photosynthetic rate(Pn), transpiration rate(Tr), stomatal conductance(Gs), water use efficiency(WUE), maximum photochemical efficiency(Fv/Fm), actual photosynthetic efficiency(ΦPS Ⅱ), apparent photosynthetic quantum transfer efficiency(ETR)and photochemical quenching coefficient(qP)all displayed a hump-shaped trend with increasing fertilization, while intercellular CO2 concentration(Ci)and non-photochemical quenching coefficient(NPQ)displayed a decreasing trend.(2)The growth, biomass, gas exchange parameters and chlorophyll fluorescence parameters of H. littoralis seedlings had different responses to fertilization. Specifically, seedling chlorophyll content, root mass and total biomass maximized at the fertilization level of 10 g per plant, seedling growth(height and ground diameter), leaf and stem mass maximized at 20 g per plant, and gas exchange parameters(Pn, Tr and Gs), chlorophyll fluorescence parameters(Fv/Fm, ΦPS Ⅱ, ETR and qP)maximized at 30 g per plant. In conclusion, our results suggested that an appropriate amount of fertilization can significantly enhance the leaf chlorophyll content, stomatal conductance, photochemical efficiency and electron transfer rate in H. littoralis seedlings, resulting in lower heat dissipation and thus higher photosynthetic capacity, while over-fertilization can induce photoinhibition in H. littoralis seedlings, which decreases photochemical efficiency and suppresses seedling growth. [ABSTRACT FROM AUTHOR]

Objective: To investigate the effect of thoracoscopic laparoscopy combined with Ivor Lewis radical resection of esophageal cancer on red cell immunity, lung function and stress response in patients with esophageal cancer. Methods: A total of 150 esophageal cancer patients admitted to our hospital from May 2016 to June 2018 were selected. The patients were divided into groups A (n=75) and group B (n=75) according to the random number table. Group A received thoracotomy Ivor Lewis radical esophageal cancer surgery, and group B received thoracoscopic laparoscopy combined with Ivor Lewis radical esophageal cancer surgery, Compare the perioperative indicators, lung function, red blood cell immunity, stress response and complications between the two groups. Results: The operation time and hospital stay in group B were shorter than those in group A, and the blood loss during operation was less than that in group A (P<0.05); there was no difference in the number of lymph nodes dissected between the two groups (P>0.05). Forced expiratory volume (FEV 1 ), forced breathing vital capacity (FVC), FEV 1 /FVC at the end of the first second of 1 month after operation in the two groups decreased, but group B was higher than group A (P<0.05). The levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and C-reactive protein (CRP) were all increased on the 3rd postoperative day in the two groups, but group B was lower than group A (P<0.05). The red blood cell immune complex rosette rate (RBC-ICR) increased in the two groups after 3 days, but group B was lower than that of group A (P<0.05); red blood cell C3b receptor rosette rate (RBC-C3bRR), tumor red blood cell rosette rate (TRR) ) Decreased, but group B was higher than group A (P<0.05). There was no significant difference in the incidence of postoperative complications between the two groups (P>0.05). Conclusion: Thoracic laparoscopy combined with Ivor Lewis radical resection of esophageal cancer for patients with esophageal cancer can effectively improve various perioperative indicators, reduce the impact on the body's lung function, red blood cell immunity and stress response, without increasing the incidence of complications. [ABSTRACT FROM AUTHOR]

Copyright of China Brewing is the property of China Brewing 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 Signal Processing is the property of Journal of Signal Processing 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.)

Aiming to explore the photosynthetic physiology and NaCl tolerance of Heritiera littoralis seedlings under different NaCl stress environments. We created soil NaCl gradients of chlorophyll content, photosynthetic parameters and chlorophyll fluorescence were measured for one-year-old seedlings under a solt treatment with 0%, 1.2%,1.5% and 1.8% NaCl for 60 d. The result showed that the chlorophyll content and the ratio of Chl a to Chl b displayed a hump-shaped pattern with NaCl stress increasing. NaCl stress decreased net photosynthetic rate (Pn), transpiration rate (Tr) and stomatal conductance (Gs) in H. littoralis. Cholorophyll fluorescence and photosynthesis were highly related, and the decline in actual quantum efficiency and apparent photosynthetic electron transfer rate due to NaCl stress led to the decline in photochemical efficiency and apparent net photosynthetic rate. Under mild NaCl stress, the decrease in photosynthetic rate may result from constraint of stomatal closure, while with increasing NaCl stress, the decrease may result from non-stoma related factors. Photoprotective mechanism may be activated under NaCl stress, in which heat dissipation path was the main pathway and protect photosynthetic apparatus from damage. Together, this study suggests that H. littoralis as a semi-mangrove tree is relative tolerant to high NaCl stress. [ABSTRACT FROM AUTHOR]

Copyright of Coal Science & Technology (0253-2336) is the property of Coal 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.)