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In order to investigate the effect of mannan oligosaccharides on the intestinal barrier of broilers, a total of 540 1-day-old healthy white-feathered broilers were selected for the experiment. Broilers were raised to 29 days old and randomly divided into three groups based on the principle of similar body weight with half male and half female: model control group, MOS health group, and ciprofloxacin lactate health group. Each group had 6 replicates, with 30 replicates each, and the experimental period was 10 d. At the age of 30 d, broilers in the model control group, MOS health group, and ciprofloxacin lactate health group were injected into the pectoral muscle with 8.37×109 CFU/mL Escherichia coli bacterial solution was used for disinfection. Afterwards, drinking water, 0.05 g/L MOS solution, and 60 mg/L ciprofloxacin lactate were administered separately for 10 days. Weigh the broilers after all experiments are completed, blood was collected for serum biochemical indicators, organ indices were measured from various segments of the small intestine, and the expression of key genes in the intestinal barrier of broilers was detected by RT qPCR. The results showed that the body weight and organ index of broilers showed no significant differences among the model control group, MOS health group, and ciprofloxacin lactate health group (P>0.05). Compared with the model control group and the ciprofloxacin lactate health group, the MOS health group broiler serum γ-GGT content significantly increased (P<0.05). Compared with the model control group, the MOS health group showed an increase in PIgR in the duodenum of broiler chickens (P<0.05); compared with the ciprofloxacin lactate health group, the MOS health group showed an increasing trend in the expression of PIgR in the jejunum of broiler chickens (P=0.077). In summary, adding MOS to drinking water increases serum levels γ-GGT upregulates the expression of PIgR in the immune barrier of the duodenum and jejunum of broiler chickens, enhances the intestinal immune barrier of broiler chickens, maintains intestinal health, and thereby improves the immune capacity of the body, with a more significant effect compared to ciprofloxacin lactate. [ABSTRACT FROM AUTHOR]

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.)

The accuracy of the method of rapid evaluation of corn silage processing score by using a vibrating sieve instrument was verified by experiments. In the study, corn silage samples from eight different pastures or herdsmen were measured by referring to the processing scoring method of corn silage proposed by Dr. Dave Mertens of the Roughage Research Center of the United States Department of Agriculture. The results showed that the ratio of corn silage samples passing through 4.75 mm sieve ranged from 59.76%~75.26%, and the grades of processing were both average and excellent. The study indicates that this scoring method can provide a convenient and rapid analysis method for evaluating the feeding value of corn silage. [ABSTRACT FROM AUTHOR]

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.)

Copyright of Journal of Liaoning Technical University (Natural Science Edition) / Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of Liaoning Technical University (Natural 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 Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue 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.)

目的 对比观察 300 mg/次、1 g/次利妥昔单抗静脉滴注治疗特发性膜性肾病的疗效及安全性, 为特发 性膜性肾病治疗药物利妥昔单抗选择适宜剂量。方法 以随机数字表法将 64 例特发性膜性肾病患者分为单次 小剂量组、常规剂量组, 各 32例。在基础支持治疗基础上, 单次小剂量组予以利妥昔单抗 300 mg/次, 常规剂量组 给予利妥昔单抗 1 g/次, 均静脉滴注, 连续治疗 6个月。比较两组总有效率, 治疗前、治疗 6个月的肾功能 (血清肌 酐、肾小球滤过率、24 小时尿蛋白定量)、免疫功能 (CD4+/CD8+、外周血免疫球蛋白 G)、M 型磷脂酶 A2 受体 (PLA2R) 抗体、25 (OH) D3水平及不良反应发生率。结果 治疗 6 个月, 常规剂量组与单次小剂量组总有效率比 较, P>0. 05。与治疗前对比, 治疗 6 个月两组血清 PLA2R 抗体、CD4+/CD8+、24 h 尿蛋白定量 (24 h UP)、血清肌酐 (sCr)水平均降低, 外周血免疫球蛋白 (IgG) 水平、肾小球滤过率 (eGFR)、25 (OH) D3水平均升高 (P均<0. 05)；两组 间外周血 IgG、血清 sCr、PLA2R 抗体、25 (OH) D3水平、CD4+/CD8+、24 h UP 水平、eGFR 比较, P 均>0. 05。与常规剂 量组不良反应总发生率 (34. 38%) 比较, 单次小剂量组 (9. 38%)低 (P<0. 05)。结论 300 mg/次、1 g/次利妥昔单 抗治疗特发性膜性肾病, 均能稳定患者病情, 改善其肾功能及免疫功能, 且疗效相当, 但 300 mg/次利妥昔单抗治 疗的安全性相对更高。 [ABSTRACT FROM AUTHOR]

To improve the accuracy of path tracking and the vehicle handling stability in the process of automatic driving tracking, a trajectory tracking control method based on model predictive control principle and angle compensation was proposed. The overall control structure was divided into two layers, and the upper layer was the trajectory tracking control layer. According to the obtained road information and the driving state of the vehicle, the front wheel steering control input was determined by the model predictive control algorithm. In the lower layer, the sliding mode control theory was used to design the angle compensator, and the yaw rate deviation of the vehicle was taken as the control target to achieve accurate tracking. The results show that compared with the single-point preview strategy, the trajectory tracking control strategy based on model prediction and angle compensation can better control the vehicle to achieve trajectory tracking, and the peak values of yaw rate and sideslip angle are significantly reduced with better stability. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Jilin University (Medicine Edition) is the property of Jilin University 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.)

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Copyright of Journal of Mine Automation is the property of Industry & Mine Automation 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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The rapid and accurate path planning for lane change, effective tracking of the desired path while maintaining vehicle stability during lane change are core technologies to ensure active safety for intelligent vehicles. Here, a path planning strategy based on double quintic polynomial and introduction of intermediate position is proposed for intelligent vehicles, with the purpose to perform smooth and safe lane-changing in real time. The active lane change scenario was analyzed to determine the initial and target positions of the lane change, then a lane-changing path planning strategy of double quintic polynomial was proposed based on critical collision position during lane change. And a co-simulation model was established to carry out active lane change simulation tests in different road conditions. The results show that the proposed lane-changing path planning strategy has more obvious lateral displacement due to the introduction of the intermediate position, which can avoid obstacles in front of the vehicle thus ensure the safe lane changing. Meanwhile, the maximum lateral acceleration of the vehicle at the intermediate position is no more than 2 m/s², which ensures the vehicle stability during lane change process. Furthermore, the required longitudinal safety distance for lane changing is reduced by about 20 m on both dry and wet roads, which reduces the longitudinal collision risk. The results provide theoretical and practical basis for active lane change path planning of intelligent vehicles. [ABSTRACT FROM AUTHOR]

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