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高效化焊接技术是当前焊接领域的热点研究。阐述的海上风电五桩导管架焊接工艺试验,母材为Q345E-Z25钢,用GMAW+SAW和FCAW两种焊接方法进行了详细试验,并根据试验结果进行了对比分析。结果表明:GMAW+SAW和FCAW两种焊接方法的力学性能均满足工况使用要求,同时"GMAW+SAW"比传统的"SAW+清根+SAW"方法具有降低成本、提高生产效率和降低工人劳动强度等优点,场外的FCAW用1.4mm焊丝比常用1.2mm焊丝熔化速度快且提高生产效率。实现了车间流水线上的高效节能焊接和场外总装手工气保焊全位置灵活性焊接。

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China 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 Acta Agronomica Sinica is the property of Crop Science Society of China 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 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 Academic Libraries is the property of Journal of Academic Libraries 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 Oncology is the property of Editorial Board of China Oncology 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.)

New protein resources can be developed to alleviate the shortage of protein in the feed industry. Photosynthetic bacteria (PSB) can serve as unique microbial protein sources. Among them, the light environment is a crucial influencing factor in the growth and metabolism of PSB. In this study, the light supply strategies were employed to enhance the growth of Rhodopseudomonas palustris (R. palustris) and the synthesis of single-cell protein (SCP) in the wastewater resource systems of PSB. Additionally, a systematic analysis was made on the correlations between substance synthesis and pollutant degradation under different light supply strategies. The results indicated that a full spectrum of light was more conducive to the accumulation of biomass and protein concentration in R. palustris, compared with the segmented spectra. Under incandescent lamp and white LED irradiation, the highest biomass concentration, daily bacterial production, bacterial yield, and protein concentration reached (1 023.18±201.17) mg/L, (0.32±0.10) g/(L·d), (0.31±0.03) mg/mg and (555.66±9.18) mg/L, respectively. These values increased by 37.26%-43.79%, 108.82%-137.92%, 42.01%-91.85%, and 24.77%-33.47%, respectively, compared with the blue and green light groups (P<0.05). Moderate light intensity was favored to accumulate biomass and protein concentration, while excessive or low intensity was detrimental to the accumulation of high-value products by R. palustris. Specifically, under a light intensity of 120 μmol/(m² ·s), the highest biomass concentration, daily bacterial production, bacterial yield, and protein concentration reached (1 646.12±2.47) mg/L, (0.77±0.01) g/(L·d), (0.44±0.05) mg/mg and (803.59±2.62) mg/L, respectively. There was an increase of 60.23%-140.19% in biomass and an increase of 61.90%-94.18% in protein concentration, compared with the 0 μmol/(m² ·s) (control) and 240 μmol/(m² ·s) groups (P<0.05). Intermittent light exhibited significant advantages over continuous light. An appropriate light cycle was selected to significantly promote the growth and protein synthesis of R. palustris. In the condition of 18 L/6 D, the highest biomass concentration, daily bacterial production, protein concentration, and nitrogen conversion efficiency reached (1 140.56±19.72) mg/L, (0.32±0.02) g/(L·d), (506.53±48.20) mg/L, and (1.77±0.35) mg/mg, respectively. There were increases by 17.06%-93.21%, 54.43%-299.93%, 24.35%-43.88% and 38.78%, respectively, compared with the 3 L/21 D and 9 L/15 D groups (P<0.05). The 3 L/21 D group exhibited the highest protein content at 67.47%, indicating an increase of 21.96%-44.54%, compared with all the other experimental groups (P<0.05). Additionally, under conditions of incandescent light, the light intensity of 120 μmol/(m² ·s) and photoperiod of 18 L/6 D, COD and NH4+ -N removal efficiencies reached 72.03%-78.40%. Furthermore, there were significant negative correlations between light intensity and spectrum with the protein content and concentration. Conversely, the photoperiod shared a significant positive correlation with protein concentration. Therefore, the photoperiod can be expected to enhance the production of SCP by R. palustris. Its mechanism involves the direct regulation of PSB growth and metabolism by the light/dark cycle. During the light period, PSB pigments capture photons through photoreactions, driving electron transfer, generating electrical energy, and ultimately converting it into ATP; Simultaneously, the Calvin cycle efficiency is enhanced, leading to the accumulation of cell growth and SCP. During the dark period, PSB cells focus on the division process, increasing overall biomass. This research can provide innovative insights to enhance the SCP synthesis in wastewater systems using PSB. [ABSTRACT FROM AUTHOR]

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Copyright of Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone 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 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 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 International Economy & Management 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.)

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.)

Objective To evaluate the effect of Ulinastatin injection on inflammation, hemodynamics, oxygenation index (PaO2 /FiO2 ) and prognosis in patients with septic shock. Methods A retrospective analysis was performed on clinical data of 109 patients with septic shock from January 2017 to December 2019. Patients were divided into observation group (n=73) and routine group (n=54) according to the treatment regimens. The two groups were given anti-shock treatment according to the relevant guidelines, and observation group was additionally given Ulinastatin. The inflammatory factors, hemodynamic parameters and PaO2 /FiO2 and recovery were compared between the two groups before and after treatment. Results The levels of IL-6, TNF-α and PCT at 7 d of treatment were significantly decreased in the two groups (P<0.05), and the levels of IL-6, TNF-α and PCT of observation group were lower than that of routine group (P<0.05). At 12 h, 24 h and 72 h of treatment, the MAP, CI and PaO2 /FiO2 were significantly increased in the two groups (P<0.05) while the EVLWI and SVRI were significantly decreased (P<0.05), and the MAP and PaO2 /FiO2 of observation group at the same time were higher than that of routine group while the EVLWI was lower than that routine group (P<0.05). At 7 d of treatment, the APACHE-II score, mechanical ventilation time and ICU stay time of observation group were lower than that of routine group, and the incidence rates of MODS in the two groups were 4.11% and 14.81% respectively (P<0.05), and the mortality rates were 1.37% and 7.41% respectively (P>0.05). Conclusion Ulinastatin could be beneficial in septic shock, which could reduce inflammatory response, improve hemodynamic parameters and microcirculation perfusion, and put a positive effect on promoting rehabilitation and improving prognosis. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chinese Institute of Food Science & Technology 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 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.)

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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.)

Copyright of Journal on Communication / Tongxin Xuebao is the property of Journal on Communications 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.)

β-Ga2O3∶Eu3+ samples with different fluence were prepared by ion implantation method and then annealed in air where Eu3+ optical activation was successfully achieved. The stress variation trend of β-Ga2O3 single crystals with Eu3+ fluence was characterized by Raman spectra and X-ray diffraction. It was found that with the increase of Eu3+ fluence, the crystal lattice stress increases first and then decreases, and its internal mechanism was analyzed. The luminescence properties of Eu3+ were characterized by cathodoluminescence spectra. The wide defect luminescence peak near 380 nm and the characteristic luminescence peaks of Eu3+ near 591 nm, 597 nm and 613 nm were observed. By Gaussian fitting, the 380 nm luminescence peak could be divided into three peaks located at about 360 nm, 398 nm and 442 nm, which are related to the self-trapping excitons and donor-acceptor pairs, respectively. In addition, the position and intensity of Eu3+ luminescence peaks were affected by the localized crystal field of the host. [ABSTRACT FROM AUTHOR]

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 Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone 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 Biology Teaching is the property of East China Normal 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.)

Copyright of Taiwan Law Review is the property of Angle Publishing 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.)

Copyright of Journal of Yangtze Normal University is the property of Journal of Yangtze Normal University 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.)

To evaluate the prognosis and determine the failure patterns after radiotherapy for low-risk early-stage patients with extranodal NK/T-cell lymphoma, nasal-type ( ENKTCL). Methods A total of 557 patients from 2000-2015 with low-risk early-stage ENKTCL who received radiotherapy ( RT) with or without chemotherapy ( CT) from China Lymphoma Collaborative Group were retrospectively reviewed. Among them, 427 patients received combined modality therapy, whereas 130 patients received RT alone. Survivals were calculated by Kaplan-Meier method and compared with Log-rank test. Overall survival ( OS ) was compared with age and sex-matched general Chinese population using expected survival and standardized mortality ratio ( SMR ). Cox stepwise regression model was used for multivariate analysis. Results The 5-year OS and progression-free survival (PFS) were 87.2% and 77.2%. The SMR was 3.59 ( P<0.001) at 1 year after treatment, whereas it was 1.50 at 4 years after treatment, without significant difference between ENKTCL group and country-matched general population (P= 0.146) . Compared with RT alone, CMT did not result in significantly superior 5-year OS ( 87.0% vs 87.4%, P= 0.961) or PFS ( 76.1% vs 80.7%, P = 0. 129). Local failure ( 11.5%, 64/557) and distant failure (10.8%, 60/557) were the main failure modes, while regional failure was rare ( 2.9%, 16/557). The 5-year locoregional control rate (LRC) was 87.2% for the whole group, with 89.5% for 350 Gy versus 73.7% for <50 Gy (P<0.001). Radiotherapy dose was an independent factor affecting LRC(P<0.05). Conclusions Radiotherapy achieves a favorable prognosis in patients with low-risk early-stage ENKTCL. The incidence of either locoregional or distant failure is low. Radiation dose still is an important prognostic factor for LRC. [ABSTRACT FROM AUTHOR]

Copyright of Journal on Communication / Tongxin Xuebao is the property of Journal on Communications 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 explore the effect of green fluorescence protein (EGFP) labeling mediated by lentivirus on the biophysical properties of human induced pluripotent stem cells (hiPSC), and provides experimental basis for multi angle evaluation of biological risk. Methods: HiPSC labeled with GFP was successfully screened by resistance gene expression 24 h after lentivirus infection. After GFP expression was observed under fluorescence microscope, Positive rate of GFP were measured with fluorescent-Activated cell scanning (FACS) analysis. The pluripotency of the cells was tested by alkaline phosphatase staining, and the expressions of pluripotent marker genes OCT4, NANOG, SOX2 and SSEA4 with immunostaining. Finally, in vitro embryoid body experiments were performed to detect differentiate ability of GFP labeled hiPSC into different cell layer. Results: Lentivirus infection can not only successfully label hiPSC with GFP, but through expression screening of resistant genes, the proportion of GFP positive cells were improved from 37.5% to 97.4%. Both AP staining and immunostaining of the pluripotent marker genes demonstrated that the pluripotent feature were maintained in the labeled cells. In vitro differentiation experiments showed that GFP labeled hiPSC could form the embryoid body and further differentiate into three embryo layers. Conclusion: Lentiviruses can efficiently label hiPSC and has no significant effect on the pluripotency and differentiation of embryoid body, and can be used for subsequent differentiation and cell tracer studies. [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 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 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 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 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 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.)