吉林省鸟类新纪录—白眼潜鸭

白眼潜鸭（Aythya nyroca）属雁形目、鸭科、潜鸭属鸟类,在东北地区一直没有记录。2010年4月11日在吉林省镇赉县大五家稻田泄水池记录到白眼潜鸭1只,填补了白眼潜鸭在吉林省分布的空白。1栖息地环境大五家稻田泄水池,地处吉林省镇赉县大屯镇境内,白眼潜鸭活动纪录地点地理坐标为123°53′32.8″E,46°00′19.6″N。池平均水深1.5 m,总面积15hm2。池南为嫩江大坝,西、北为稻水渠,东为连续泄水池。池内主要水生植物有芦苇（Phragmites australis）、香蒲（Typha angustifolia）、水葱（Scirpus tabernaemontani）藻类等十几种。鱼类有鲤、鲫、鲶类近20种,还有虾、蚌、螺等多种小型水生动物,鸟类饵料极其丰富。春秋迁徙季节

大鸨越冬栖息地选择

2003～2006年的1～2月在吉林省镇赉县和内蒙古兴安盟科尔沁右翼前旗接合部的草原地带,对大鸨越冬栖息地的选择进行了考察研究,并将栖息区域人为地划分为3种类型。一是农田荒地和周边草甸,二是平均低于40cm的矮针茅草原,三是平均高于40cm的高针茅草原。结果表明,大鸨对这3种栖息地类型选择明显。农田生境植物性食物丰富,草原生境动物性食物较多

鄱阳湖野生白鹤的救护及异地放归监测初步研究

2018年4月24日，江西省野生动植物救护繁育中心接收救护1只亚成体野生白鹤，体检发现白鹤疑似肠道感染，经过药物治疗、康复护理和野化训练，结果在吉林莫莫格国家级自然保护区内放飞。通过鸟类环志进行放归后监测，发现白鹤在黄河三角洲保护区越冬，证实白鹤救护放归成功。本文通过接收1只野生白鹤，总结了白鹤临床救治和护理经验，为日后国内开展白鹤保护和野生动物异地放归工作提供理论和实践基础

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors

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^