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The purpose of the experiment was to investigate the performance of the European meat pigeon Ⅱ line and the European meat pigeon line Ⅲ (O Ⅱ ×O Ⅲ) in terms of growth, slaughter, and meat quality performance. In the experiment, forty 0-day-old O Ⅱ ×O Ⅲ hybrid pigeons were selected to determine body weight, body size, slaughter performance, and meat quality (half in male and female), and correlation analysis was carried out. The experimental period was 28 days. The results showed that the population homogeneity of 28-day hybrid pigeons was relatively good. The coefficients of variation of body length, keel length, tibia circumference, tibia length, chest width, and chest depth were all below 7% except for body weight, which was 9.93%. The leg muscle weight and leg muscle rate of the male hybrid pigeons were significantly higher than those of female pigeons (P<0.05). The weight of the hybrid pigeons reached a significant or extremely significant positive correlation level with eight indexes, including body length, shin circumference, shin length, and slaughter weight (P<0.05 or P<0.01). There was no significant difference in meat quality between male and female pigeons at 28 days, but the meat quality of male pigeons was better. The results show that although the 28 day-hybrid pigeon does not completely surpass the parent in terms of growth, slaughter, and meat quality performance, its group uniformity and meat production performance are good, which can provide some references for the breeding and production of high-quality meat pigeons. [ABSTRACT FROM AUTHOR]

In order to improve the accuracy of the community detection in complex networks, this paper proposed a multiobjective community detection based on adaptive memetic algorithm. In global search, the algorithm applied the Logistic function to set the corresponding crossover probability and mutation probability. and turned the multi-objective optimization problem into minimal optimization of two objectives called kernel K-means( KKM) and ratio cut( RC) at the same time. In local search. it constituted the local optimization target of weights of two objective functions and used a hill-climbing strategy to find the best individual. Experiments on synthetic and real life networks show that, compared with five algorithms based on GAs( genetic algorithms) and Fast Modularity algorithm,the proposed algorithm can effectively improve the accuracy of the community detection and has certain advantages in solving community detection problems in complex networks. [ABSTRACT FROM AUTHOR]

To observe the efficacy of Qiju Dihuang Decoction Combined with sodium hyaluronate eye drops in the treatment of dry eye with liver and kidney yin deficiency and its effects on ocular surface function and tear matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9) levels. A total of 98 patients with dry eye who were treated in the Outpatient Department of Hunan Provincial Hospital of Traditional Chinese Medicine from June 2018 to March 2021 were selected. They were divided into control group and experimental group randomly, 49 cases in both groups. The control group was treated with sodium hyaluronate eye drops, and the experimental group was treated with Qiju Dihuang Decoction on the basis of the control group. Both groups were treated for 4 weeks. The curative effect, TCM syndrome score, ocular surface function and tear MMP-2 and MMP-9 levels of the two groups were compared, and the incidence of adverse reactions during treatment was observed. The total clinical effective rate of the experimental group was higher than that of the control group (P<0.05). 4 weeks after treatment, the syndrome scores of dry eyes, photophobia, frequent blinking of eyes, dry mouth, redness of white eyes, red tongue, thin fur and fine pulse in the experimental group were lower than those in the control group (P<0.05). 4 weeks after treatment, the tear film rupture time (BUT) and tear secretion test (SIT) levels in the experimental group were higher than those in the control group, and the score of corneal conjunctival fluorescein staining (FL) was lower than that in the control group (P<0.05). 4 weeks after treatment, the levels of MMP-2 and MMP-9 in tears in the experimental group were lower than those in the control group (P<0.05). There was no significant difference in the incidence of adverse reactions between the two groups (P>0.05). Qiju Dihuang Decoction Combined with sodium hyaluronate eye drops can promote the relief of symptoms, improve eye surface function and reduce the levels of MMP-2 and MMP-9 in tears. [ABSTRACT FROM AUTHOR]

目的 观察右美托咪定联合纳布啡静脉自控镇痛在单胎足月妊娠初产妇剖宫产术后的应用效果。 方法 将120例择期剖宫产产妇根据随机数字表法分成右美托咪定联合纳布啡组 (D组) 与纳布啡组 (C组). 两组 均于手术结束后行静脉自控镇痛 (PCIA). D组PCIA配制方法：右美托咪定4 µg/kg + 纳布啡2 mg/kg，C组：纳布啡 2 mg/kg。两组均用 0. 9% 氯化钠注射液配至 100 mL。比较两组产妇术后镇痛效果［疼痛评分 (VAS) 、焦虑评分 (SAS) 、Ramsay镇静评分］、母体恢复情况 (抽取产妇外周静脉血检测IL-6、皮质醇及泌乳素水平) 、母乳喂养情况 (首 次泌乳时间、产妇母乳喂养自我效能感量表得分、48 h内添奶次数) 及不良反应发生情况。结果 术后12、24、48 h， 与 C 组比较，D 组 VAS 评分低 (P 均<0. 05); 术后 24、48 h，与 C 组比较，D 组 SAS 评分低 (P 均<0. 05); 术后 12、24、 48 h，与 C组比较，D组 Ramsay镇静评分高 (P均<0. 05). 术后 1、2、3 d，D组 IL-6及皮质醇浓度低于 C组 (P<0. 05); 术后1、3 d，D组产妇泌乳素水平高于C组 (P均<0. 05). 与C组比较，D组产妇术后首次泌乳时间早 (P<0. 05) 、术后 48 h母乳喂养自我效能感量表得分高 (P<0. 05). 结论 应用右美托咪定联合纳布啡静脉自控镇痛不仅对单胎足月 妊娠初产妇剖宫产术后疼痛起到良好的抑制作用，而且有利于减轻术后炎症以及应激反应，促进产妇恢复，同时有 利于产妇术后母乳喂养。 [ABSTRACT FROM AUTHOR]

This study aims to determine the rheological properties and structural stability of the beach soil for shellfish cultivation. A series of rheological tests were carried out on the beach soil with different water content and standing time using a rotary rheometer. A single-factor test was also conducted to explore the influence of water content and standing time on the rheological properties of the beach soil. The soil shear was then analyzed to determine the influence of water content and standing time on yield stress. At the same time, the numerical model was established for the yield stress, water content and resting time after the central composite design (CCD) test in the response surface method (RSM). A comparison was then made on the influence of water content and resting time on yield stress. Finally, the reliability and accuracy of the regression model were further verified to compare the error between the measured and the actual values. The results show as follows: 1) The shear stress gradually decreased with the increase of water content under the same shearing rate in the shearing process, whereas there was a gradual increase with the increase of standing time; In addition, the beach soil was characterized by the consolidation. The longer the static time was, the longer the solid-liquid transformation was, and the later the solid-liquid node was. The static time shared the greatest impact on the solid-liquid node in the early stage. The longer the static time was, the smaller the impact on the solid-liquid node was. 2) When the average shear stress and yield stress were at the shear rate of 10 - 60 s-1 under the same standing time, the overall shear stress of the tidal flat soil gradually decreased with the increase of water content, thus reducing the structural stability of the tidal flat soil. In addition, the overall shear stress of the tidal flat soil gradually increased under the same moisture content with the increase of static time, indicating the increase in the structural stability of tidal flat soil. The change rate of yield stress with the static time showed that there was a cut-off point of moisture content in the beach soil, which was between 64.5% and 67.0%. In the samples exceeding this moisture content cut-off point, the change rate of yield stress with the static time remained stable after the static time exceeded 31 h, where there was no fluctuation in the yield stress. The yield stress ranged from 2 240 to 4 380 Pa. In addition, the yield stress in the sample of 62.0%-69.5% was between the 0-53 h, and the yield stress between 62.0%-69.5% was between 1 870-5 410 Pa. 3) The P and R 2 values of numerical models were above 0.05, and 0.953 4, respectively, indicating the high reliability and accuracy. There was a more significant influence of water content on the yield stress, compared with the resting time. However, the interaction between water content and resting time shared no significant influence on the yield stress. The test verified that the measured yield stress was basically consistent with the predicted one, with an error of less than 15.0%. The rheological properties of beach soil can be better characterized as well. The findings can provide a strong reference for the research and optimization of beach shellfish harvesting machinery [ABSTRACT FROM AUTHOR]

The purpose of the experiment was to study the correlation between body weight and body size traits of Tarim pigeon and white Carnean pigeons, to provide data support for the selection of phenotypic traits of Tarim pigeon and white Carnean pigeons. A total of 60 Tarim pigeons and 60 white Carnean pigeons (half in male and female) were selected to determine their body weight and body size traits, and the principal component analysis and clustering analysis were carried out. The results of correlation analysis showed that the coefficient of variation of body weight and body size of Tarim pigeon and white Carnean pigeon were both below 10%. The body weight of Tarim pigeons had extremely positive correlations with six body size indexes (P<0.01), and the body weight of white Carnean pigeons had extremely positive correlations with five body size indexes (P<0.01). The results of principal component analysis showed that the weight and six body size indexes of Tarim pigeon and white Carnean pigeon could be integrated into three principal component indexes, and the cumulative contribution rate was 78.301% and 79.371%, respectively. The largest contribution rates of the three principal components of Tarim pigeon were body weight, shin circumference and chest width. Among the three principal components of white Carnean pigeon, the largest contribution index were keel length, tibia circumference and chest width. The results of cluster analysis showed that body weight and body size could be grouped into three categories: Body weight, chest width and shin circumference, which were consistent with the results of principal component analysis. The study indicates that the selection of weight and body size traits of Tarim pigeon and white Carnean pigeon should at least include four indicators: Weight, shin circumference, chest width and keel length. [ABSTRACT FROM AUTHOR]

Aiming at the motion stability for mechanical equipment, an S-shape acceleration and deceleration control method based on Sigmoid-function was proposed to reduce the jitter and jitter time, during the start and stop of mechanical equipment. The feasibility of the control method was demonstrated from the aspect of displacement, velocity, acceleration jerk, etc. The time-planning method of non-isochronous discretization was used to optimize and improve the time-division of acceleration and deceleration. Program was designed by using time and speed array traversal and query. The experiment was carried out by the gantry-type spotting device based on ARM9 microcontroller, and the laser tracker was used for measurement. The results indicate that compared with unit step signal controlling method, the S-shape acceleration and deceleration controlling method based on Sigmoid-function can reduce the jitter during the start-stop phase of the equipment by 62. 5%.Compared with 7-section acceleration and deceleration controlling method, the S-shape acceleration and deceleration controlling method based on Sigmoid-function can reduce the jitter time during the start-stop phase of the equipment by 33. 3%. [ABSTRACT FROM AUTHOR]