Study and Apply of Colloidal Gold Strip in Detecting the Antibody of Food and Mouth Disease

应用免疫学原理与胶体金层析技术,采用双抗原夹心ELISA建立了检测口蹄疫(O型)抗体水平的“口蹄疫抗体(O型)免疫胶体金快速检测试纸法”。应用该法与“口蹄疫正向间接血凝抗原法”对300份猪、鸡、鸭、牛、羊等血液或血清进行口蹄疫抗体水平检测试验,符合率达100%。试验结果显示,该法与间接血凝法一样,具有微量、特异、准确等优点,且操作简易,不需要任何仪器,检测时间短,结果直观,容易判定,适用于基层兽医站、养猪场使用和大面积口蹄疫抗体普查。Based on the principle of colloidal gold immunochromatography,a test strip was prepared and applied in detecting the antibody of food and mouth disease(type O).The test result was coincidence with indirect hemagglutination method in examination of 233 blood or sera samples obtained from pig,chicken,duck,cattle and goat.It shows that this strip has the same merits as that of the indirect hemagglutination test in microanalysis,high specialty and accurate.No special instrument was needed and the test can be completed easily in a short time.So it can be used in common animal hospital,hoggery and the general survey of food and mouth disease

干旱内陆河灌区节水农业综合技术体系研究与集成

本课题从工程节水、农艺节水、管理节水三个方面,集成了农业高效节水、水肥盐调控、生态保护、监测与管理等关键技术,提出了干旱内陆河灌区农业节水技术集成体系与应用模式。提出了仅需根据水流推进过程确定土壤入渗参数和田面糙率系数的新方法,简化了地面灌溉设计。提出了根据土壤剖面含水率变化估算柽柳生长条件下潜水蒸发的理论方法与数学模型,为解决天然植被实际生态耗水问题提供了简易可行的方法

Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024

We present a measurement of the integrated luminosity e+e- of collision data collected by the BESIII detector at the BEPCII collider at a center-of-mass energy of Ecm = 3.773 GeV. The integrated luminosities of the datasets taken from December 2021 to June 2022, from November 2022 to June 2023, and from October 2023 to February 2024 were determined to be 4.995±0.019 fb-1, 8.157±0.031 fb-1, and 4.191±0.016 fb-1, respectively, by analyzing large angle Bhabha scattering events. The uncertainties are dominated by systematic effects, and the statistical uncertainties are negligible. Our results provide essential input for future analyses and precision measurements

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^