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Assessment of ECMWF’s Precipitation Forecasting Performance for China from 2017 to 2022

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Journal of Tropical Meteorology 2024年第3期30卷 257-274页

作者： PAN Liu-jie ZHANG Hong-fang LIANG Mian LIU Jia-huimin dai Chang-ming Shaanxi Meteorological Observatory Xi’an 710014 China Key Laboratory of Eco-Environment and Meteorology for the Qinling Mountains and Loess Plateau Xi’an 710014 China Shaanxi Meteorological Service Centre Xi’an 710014 China

This study used the China Meteorological Administration(CMA)three-source fusion gridded precipitation analysis data as a reference to evaluate the precipitation forecast performance of the European Centre for Medium-Range Weather Forecasts(ECMWF)model for China from 2017 to *** main conclusions are as *** precipitation forecast capability of the ECMWF model for China has gradually improved from 2017 to *** scores such as bias,equitable threat score(ETS),and Fractions Skill Score(FSS)showed improvements for different categories of *** bias of light rain forecasts overall adjusted towards smaller values,and the increase in forecast scores was greater in the warm season than in the cold *** ETS for torrential rain more intense categories significantly increased,although there were large fluctuations in bias across different *** model exhibited higher precipitation bias in most areas of North China,indicating overprediction,while it showed lower bias in South China,indicating *** ETSs indicate that the model performed better in forecasting precipitation in the northeastern part of China without the influence of climatic background *** of the differences between the first period and the second period of the forecast shows that the precipitation amplitude in the ECMWF forecast shifted from slight underestimation to overestimation compared to that of CMPAS05,reducing the likelihood of missing extreme precipitation *** improvement in ETS is mainly due to the reduction in bias and false alarm rates and,more importantly,an increase in the hit *** 2017 to 2022,the area coverage error of model precipitation forecast relative to observations showed a decreasing trend at different scales,while the FSS showed an increasing trend,with the highest FSS observed in *** ETS followed a parabolic trend with increasing neighborhood radius,with the better ETS neighborhood radius generally

关键词： ECMWF forecasting verification neighborhood verification FSS

3M syndrome patient with a novel mutation:A case rep

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World Journal of Clinical Cases 2024年第8期12卷 1454-1460页

作者： ming-Ran Luo Si-ming dai Yin Li Qian Wang Hao Liu Peng Gao Jia-Yun Liu Jian Chen Shu-Jie Zhao Guo-Yong Yin Department of Orthopedics The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029Jiangsu ProvinceChina

BACKGROUND A rare autosomal recessive genetic disorder,3M syndrome,is characterized by severe intrauterine and postnatal growth *** with 3M syndrome typically exhibit short stature,facial deformities,long tubular bones,and high vertebral bodies but generally lack mental abnormalities or other organ *** genes associated with 3M syndrome include CUL7,OBSL1 and *** clinical and molecular characteristics of patient with 3M syn-drome are unique and serve as important diagnostic *** SUMMARY In this case,the patient displayed square shoulders,scoliosis,long slender tubular bones,and normal neurological ***,the patient did not exhibit the typical dysmorphic facial features,relative macrocephaly,or growth retardation commonly observed in individuals with 3M *** exon sequencing revealed a novel heterozygous c.56681+1G>C(Splice-3)variant and a previously reported nonsense heterozygous c.3341G>A(***1114Ter)variant of ***,it is important to note that the clinical features of 3M syndrome may not always be observable,and genetic confirmation is often ***,the identification of the c.5683+1G>C variant in OBSL1 is notewor-thy because it has not been previously reported in public *** Our study identified a new variant(c.5683+1G>C)of OBSL1 that contributes to expanding the molecular profile of 3M syndrome.

关键词： 3M syndrome CUL7 OBSL1 CCDC8 Autosomal recessive Case report

Efficacy of interleukin-17 inhibitors on radiographic progression in psoriatic arthritis:A systematic review and meta-analysis

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Chinese Medical Journal 2024年第4期137卷 473-475页

作者： Han-Lei Jiang Yu Du Qiang Tong Sheng-ming dai Department of Rheumatology and Immunology Shanghai Sixth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200233China

To the Editor:Psoriatic arthritis(PsA)is a highly heterogeneous inflammatory *** occurs in up to 30%of patients with psoriasis and can have severe impacts on peripheral joints,spine,tendon insertions,and fingers. ^([1])Radiographic progression is currently the preferred method for assessing structural damage of PsA. ^([2])Biologic treatment options for PsA include tumor necrosis factor-αinhibitors(TNFi),interleukin-12/23 inhibitors,and interleukin-17(IL-17)*** therapeutic effects of IL-17 inhibitors on structural damage were not consistent over multiple ***,a systematic review and meta-analysis of the available randomized controlled trials(RCTs)was conducted to quantify the overall effect of IL-17 inhibitors on structural damage in *** study was registered with PROSPERO(***42022301774).

关键词： damage analysis inhibitors

铸牢中华民族共同体意识的理论逻辑与法治路径

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中南民族大学学报（人文社会科学版） 2024年第8期44卷 33-45,182,183页

作者：戴小明中共中央党校/国家行政学院政法部北京100091

国家是文明社会的概括,国家的诞生是人类文明进步的重大标志。国家是历史的产物,是不同族群基于历史文化认同、价值共识之上的命运共同体;国家是区域的聚合,现代国家超越一般地域、血缘和族群,是一致性与多样性相统一的文明共同体;伴随... 详细信息

国家是文明社会的概括,国家的诞生是人类文明进步的重大标志。国家是历史的产物,是不同族群基于历史文化认同、价值共识之上的命运共同体;国家是区域的聚合,现代国家超越一般地域、血缘和族群,是一致性与多样性相统一的文明共同体;伴随现代国家建构的成功转型、国家治理现代化的大力推进,国家的全民性、权力的人民性、监督的有效性、发展的全面性日益凸显,对领土内族群、居民(国民)实行无差别强制和平等保护,成为国家的制度常态。民族是历史的共同体,民族问题是社会革命总问题的一部分;在社会主义国家,各民族实现民族平等后,历史的发展趋势必然是走向民族融合。铸牢中华民族共同体意识的科学论断,坚守马克思主义经典作家的理论本源,植根于中华大一统历史传统,赓续我们党在民族问题上的一贯主张,巩固和拓展了中国特色解决民族问题的正确道路,是马克思主义国家学说同中国统一多民族国家具体实际相结合、同中国优秀传统文化相结合的重大原创性成果,具有深刻的理论逻辑,蕴涵着深邃的哲学智慧,为新时代新征程中华民族共同体建设提供了科学指引。铸牢中华民族共同体意识为中国式现代化聚力,全面依法治国为中国式现代化赋能,并为铸牢中华民族共同体意识指明基本法治路径。

关键词：铸牢中华民族共同体意识马克思主义国家学说多元一体国家治理现代化法治中国建设

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Wobbling motion for a triaxial rotor plus a single quasiparticle

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Chinese Physics C 2024年第3期48卷 104-117页

作者：李嗣华戴华名陈启博周先荣 Department of Physics East China Normal UniversityShanghai 200241China

Wobbling motion in a system comprising a triaxial rotor and a single quasiparticle is studied employing the particle-rotor *** energy spectra,wobbling frequencies,electromagnetic transition probabilities,g-factors,angular momentum components,spin coherent state maps,and static quadrupole moments are *** investigations were conducted with regard to the Fermi surface transitioning from the lowest h_(11/2) orbit to the highest *** the Fermi surface increases,notable transformations occur in the wobbling ***,the mode exhibits a transverse revolution around the short axis of the ***,as the Fermi surface continues to increase,the mode gradually shifts to a longitudinal revolution around the intermediate ***,it transitions to a transverse revolution around the long ***,the stability of the long axis transverse mode diminishes relative to its counterpart along the short axis as the total angular momentum increases atγ=20∘.

关键词： Wobbling motion Fermi surface particle-rotor model angular momentum geometry

不同发酵方式对桑葚果酒酚类物质含量、香气成分及感官品质的影响

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食品科技 2024年第8期49卷 101-109页

作者：毕文戴明甘肃农业职业技术学院食品与文旅学院甘肃兰州730020

桑葚酒是广受欢迎的果酒之一。传统酿造方式制作的桑葚酒一般活性成分降解严重、酸味较重、香气寡淡。为提高桑葚酒的活性成分含量及感官品质,研究比较了4种不同酿造方式(传统发酵、冷冻果实发酵、二氧化碳浸渍发酵及二氧化碳浸渍联合... 详细信息

桑葚酒是广受欢迎的果酒之一。传统酿造方式制作的桑葚酒一般活性成分降解严重、酸味较重、香气寡淡。为提高桑葚酒的活性成分含量及感官品质,研究比较了4种不同酿造方式(传统发酵、冷冻果实发酵、二氧化碳浸渍发酵及二氧化碳浸渍联合冷冻果实发酵)对桑葚果酒理化性质、酚类物质含量、香气成分含量及感官品质的影响。结果表明,与传统酿造方式相比,冷冻果实发酵及二氧化碳浸渍联合冷冻果实发酵均能降低果酒酸度,提高果酒酚类物质及酯类香气物质含量,并且提高了果酒感官品质。与其他发酵方式相比,二氧化碳浸渍联合冷冻果实发酵效果最佳,果酒中含有较高含量的矢车菊素-3-O-葡萄糖苷(Cyanidin-3-O-glucoside,C3G)、矢车菊素-3-O-芸香糖苷(Cyanidin-3-O-rutinoside,C3R)、原儿茶酸、绿原酸及槲皮素,且乙酸乙酯、丁酸乙酯及苹果酸乙酯含量较高,感官品质较好。综上,二氧化碳浸渍联合冷冻果实发酵是一种优良的发酵手段,可用于桑葚酒的生产。

关键词：不同发酵方式桑葚果酒酚类物质香气成分感官评定

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基于非均匀谱修正方法的熔盐堆少群截面计算

核动力工程 2024年第5期45卷 62-70页

作者：戴明张奥程懋松中国科学院上海应用物理研究所上海201800 中国科学院大学北京101408

针对熔盐堆高泄漏及强异质性特点,基于特征线方法(MOC)的全堆输运计算适用于熔盐堆临界计算。为权衡计算效率及精度,提出非均匀谱修正(nSM)方法为MOC全堆计算提供少群截面。该方法是一种嵌入式泄漏修正方法,即利用少群MOC全堆计算反馈... 详细信息

针对熔盐堆高泄漏及强异质性特点,基于特征线方法(MOC)的全堆输运计算适用于熔盐堆临界计算。为权衡计算效率及精度,提出非均匀谱修正(nSM)方法为MOC全堆计算提供少群截面。该方法是一种嵌入式泄漏修正方法,即利用少群MOC全堆计算反馈的泄漏参数进行多群能谱计算,然后在线更新全堆计算的少群截面。针对熔盐实验堆(MSRE)二维全堆基准题,与蒙卡程序OpenMC连续能量计算结果对比,非均匀谱修正方法计算的k_(eff)偏差小于0.25%,全堆最大裂变率偏差为2.6%,位于相对裂变率仅0.04的堆容器节块,其计算结果明显优于使用组件计算能谱并群截面方案结果。计算分析表明,引入近似的非均匀谱修正方法具有较好精度,且能显著提高计算效率,是一种能为熔盐堆MOC全堆计算提供少群截面的可行方法。

关键词：非均匀谱修正熔盐堆特征线方法(MOC) 全堆输运计算少群截面加工

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单一菌株和混合菌株对山楂果醋中风味成分的影响

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中国调味品 2024年第3期49卷 92-95页

作者：戴铭成秦楠晋中信息学院食品与环境学院山西晋中030800 山西中医药大学中药与食品工程学院山西晋中030619

自然环境条件下发酵的果醋风味优于单一菌株发酵的果醋,然而,自然发酵的山楂果醋发酵周期长且品质不稳定。通过人工接种的方式可以缩短山楂果醋的发酵时间,稳定山楂果醋的品质,但单一菌株又会导致山楂果醋口感单一,缺乏市场竞争力。为... 详细信息

自然环境条件下发酵的果醋风味优于单一菌株发酵的果醋,然而,自然发酵的山楂果醋发酵周期长且品质不稳定。通过人工接种的方式可以缩短山楂果醋的发酵时间,稳定山楂果醋的品质,但单一菌株又会导致山楂果醋口感单一,缺乏市场竞争力。为了探究单一菌株和混合菌株醋酸发酵对山楂果醋品质的影响,该研究通过GC-MS技术对单一菌株和混合菌株醋酸发酵山楂果醋中香气成分进行分析,结果表明两种醋酸发酵方式的山楂果醋中主要风味物质包括酸类、酯类、醇类、醛类和酚类,占风味成分的90%以上。采用混合菌株发酵的山楂果醋物质利用率和香气成分种类均高于单一菌株发酵的山楂果醋。

关键词：山楂发酵微生物风味物质

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含朝格尔碱基聚酰亚胺-聚苯并咪唑宽温域复合质子交换膜的制备和性能

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高分子学报 2024年第4期55卷 452-461页

作者：钟建铭代俊明张宇赵庆美张旭庄永兵长江大学化学与环境工程学院荆州434023 中国科学院过程工程研究所生化工程国家重点实验室北京100190 中国科学院大学化学工程学院北京100049

针对氢燃料电池对宽温域质子交换膜材料的迫切应用需求,合成了新型含Tr?ger’s base(TB)结构的聚苯并咪唑(TB-PBI-N),并以之为填料与含TB基聚酰亚胺(PI-TB-N)共混,制备了5种不同比例的磷酸掺杂复合质子交换膜.通过傅里叶红外光谱(FTIR)... 详细信息

针对氢燃料电池对宽温域质子交换膜材料的迫切应用需求,合成了新型含Tr?ger’s base(TB)结构的聚苯并咪唑(TB-PBI-N),并以之为填料与含TB基聚酰亚胺(PI-TB-N)共混,制备了5种不同比例的磷酸掺杂复合质子交换膜.通过傅里叶红外光谱(FTIR)、核磁氢谱(^(1)H-NMR)、热失重分析(TGA)和拉伸试验等表征了质子交换膜的结构、机械性能、热及氧化稳定性、酸吸收、溶胀度、质子电导率(σ)及氢/空燃料单电池的功率密度(PD),探究了TB-PBI-N填料的添加对复合膜性能的影响.结果表明:磷酸掺杂前复合膜的拉伸强度为87.3~129.5 MPa,掺杂后膜的拉伸强度为3.7~9.5 MPa,磷酸吸收率为235.3%~288.7%,溶胀率为13.9%~25.0%,可在30~160℃传导质子,σ和PD最高分别可达94.3 mS/cm和334.6 mW/cm^(2).TBPBI-N填料的添加改善了复合膜的机械性能及磷酸掺杂膜的尺寸稳定性.另外,填料TB-PBI-N的TB结构具有额外的碱基位点,可提供一定的酸吸附能力,从而提升了σ.其中,复合膜TB-PI-5PBI的拉伸强度为116.8 MPa,磷酸掺杂后膜的σ=67.7 mS/cm(160℃、0%RH),在30、80和160℃下,电池的功率密度分别达到58.9、224.7和334.6 mW/cm^(2),具有无湿度环境宽温域范围应用前景.

关键词：聚酰亚胺聚苯并咪唑朝格尔碱基质子交换膜复合膜