mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
CH_4 oxidation to oxygenates with N_2O over iron-containing Y zeolites: Effect of preparation

Developing effective iron-incorporated zeolites and determining their active centers for the direct oxidation of CH_4 to oxygenates have remained challenging topics so far. In this paper, we successfully prepare the highly-dispersed iron supported Y zeolites by a facile solid-state ion-exchange method with ferrocene, which was conducted under water-free conditions followed by a series of calcination. Moreover, extra-framework dinuclear Fe~(2+) complexes are identified as so-called active α-iron sites on zeolites. ICP-OES, N_2 adsorption–desorption test, X-ray diffraction, solid-state ~(27)AlNMR,N_2O titration, TEM, EPR and ~(57)Fe Mossbauer spectrawere carried out to characterize properties of sample structure, acid sites, as well as the supported iron species. Characterization results indicate that high-temperature treatments have no effect on the typical structure feature of zeolites. Compared with catalysts synthesized by conventional impregnation, the samples prepared by the facile approach possess abundant dinuclear Fe~(2+) complexes but no Fe_2O_3 bulks and show weak acidity. These lead to a higher oxygenate selectivity in CH_4 oxidation to oxygenates. Remarkably, the oxygenate (HCHO and CH_3OH) selectivity of 6.5% at 375°C can be eventually obtained.
针对我国疫苗经济学评价研究的概括性分析

疫苗接种可有效降低疾病致死率,极大提高了人民生活健康水平,是公共卫生领域中性价比最高的用于降低传染性疾病负担的有效干预手段。近年来,越来越复杂的疫苗生产工艺和对于疫苗安全性、有效性方面严格的注册及监管要求,导致疫苗开发及生产成本逐年增加,因此在疫苗成本效益方面存在一些矛盾。随着经济社会的发展,虽然我国公共卫生系统的资金投入逐年增加,但公共卫生系统涉及面越来越广,如何有的放矢地制订卫生政策,合理安排公共卫生资源是政策制定者亟待解决的难题。通过与无疫苗接种或其他干预方式(如治疗或其他疫苗)进行系统性分析对比,经济学评价可为政策制定者提供疫苗接种的经济学数据,从而做出是否采纳此疫苗接种的高质量及一致性的决策。另外,经济学评价也可应用于疫苗接种程序和接种目标人群的疫苗成本效果的评估。
Inference and optimal design on step-stress partially accelerated life test for hybrid system with masked data

Under Type-II progressively hybrid censoring, this paper discusses statistical inference and optimal design on stepstress partially accelerated life test for hybrid system in presence of masked data. It is assumed that the lifetime of the component in hybrid systems follows independent and identical modified Weibull distributions. The maximum likelihood estimations (MLEs) of the unknown parameters, acceleration factor and reliability indexes are derived by using the Newton-Raphson algorithm. The asymptotic variance-covariance matrix and the approximate confidence intervals are obtained based on normal approximation to the asymptotic distribution of MLEs of model parameters. Moreover, two bootstrap confidence intervals are constructed by using the parametric bootstrap method. The optimal time of changing stress levels is determined under D-optimality and A-optimality criteria. Finally, the Monte Carlo simulation study is carried out to illustrate the proposed procedures.
康复新液VSD冲洗联合生肌膏外用序贯治疗足背外伤性创面的临床观察

足背损伤往往伴随着局部软组织缺损。临床对于外伤性创面覆盖虽有众多治疗方法,如反复清创换药、植皮、皮瓣覆盖等,但存在手术创伤大、费用高等缺点,笔者自2016年12月—2017年12月运用康复新液VSD冲洗联合生肌膏外用序贯治疗足背外伤创面19例,取得较好的临床疗效,现报道如下。
海绵城市建设中生物滞留设施排空时间研究

生物滞留设施在我国海绵城市建设中被广泛使用,但在具体应用过程中,也暴露出很多问题和不足,一个重要原因是作为生物滞留设施设计的核心参数,排空时间在我国相关规范性文件中并没有得到充分的重视。通过系统分析欧美国家有关生物滞留设施表面积计算方法、土壤渗透系数取值、排空时间规定及控制方式,提出我国应建立以排空时间为核心的生物滞留设施设计方法体系。同时,基于达西定律的基本假设,从理论上推导得出生物滞留设施底部穿孔排水管孔口开孔面积计算方法,并应用于工程案例。
Multiferroism in Pr_2FeCrO_6 perovskite

Pr_2FeCrO_6 perovskite crystallizes in an orthorhombic structure with R3c space group. Magnetic study has revealed that Pr_2FeCrO_6 exhibits room-temperature ferromagnetism with a Curie temperature of about 562 K. Pr_2FeCrO_6 also exhibits weak ferroelectricity. Thus, given its ferroelectric and ferromagnetic nature, the Pr_2FeCrO_6 material can be considered as a multiferroic. In addition, due to its high Curie temperature and multiferroicity, it could be a promising candidate for spintronics applications.
Effect of wheel speed on phase formation and magnetic properties of (Nd_(0.4)La_(0.6))-Fe-B melt-spun ribbons

The effect of wheel speed on phase formation and magnetic properties of (Nd_(0.4)La_(0.6))_(15)Fe_(77.5)B_(7.5) and (Nd_(0.4)La_(0.6))_(13.4)Fe_(79.9)B_(6.7) ribbons prepared by melt-spinning method was investigated experimentally. Based on X-ray diffraction results, all melt-spun ribbons consist of the main phase with the tetragonal 2:14:1 type structure and the minor a-Fe phase. Magnetic measurements show the maximum magnetic energy product ((BH)_(max)) and the remanence (M_r) increases firstly and then decreases with the increase of wheel speed, while the coercivity (H_(ci)) increases, resulting from the variation of the average volume fraction of the a-Fe phase and the average grain size in the melt-spun ribbons. Using Henkel plots, the interaction between the 2:14:1 phase and the a-Fe phase in the melt-spun ribbons was analyzed and the intergranular exchange coupling is manifested. Optimal magnetic properties of H_(ci) = 7.27 kOe, M_r = 90.94 emu/g and (BH)_(max) = 12.10 MGOe are achieved in the (Nd_(0.4)La_(0.6))_(15)Fe_(77.5)B_(7.5) ribbon with the wheel speed of 26 m/s. It indicates that magnetic properties of Nd-Fe-B melt-spun ribbons with highly abundant rare earth element La can be improved by optimizing alloy composition and preparation process.
Polyimide-derived carbon nanofiber membranes as anodes for high-performance flexible lithium ion batteries

The strategy of N-doping in carbon materials could provide additional Li-ion storage sites to improve their electrochemical properties. Heteroatom-containing polymers could serve as good precursors to fabricate doped carbons due to the capability to in situ dope heteroatoms into the structures. In this work, electrospun heterocyclic polyimide (PI) nanofiber membranes containing biphenyl and pyrimidine rings were carbonized to fabricate freestanding and flexible heteroatoms-containing carbon membranes. When the polymer membranes were subjected to various calcination temperatures (from 550 ℃ to 950 ℃) and durations (0.5-10 h), the structural evolutions strongly affect their electrochemical properties as anodes for lithium ion batteries. It demonstrated that the reversible specific capacity of obtained sample treated at 650 ℃ for 3 h could achieve 695 mAh/g at 0.1 A/g and retain 245 mAh/g at 1.5 A/g after 300 cycles. Furthermore, the electrospun membrane maintains a good electrochemical performance at bending state as a flexible electrode.
Selective recognition of HIV RNA by dinuclear metallic ligands

We describe the development of dinuclear metallic ligands to target specific HIV RNA structures. Two series of dipyridinyl-N bridged dinuclear metal complexes were synthesized in moderate to good yields and their binding activities toward TAR and RRE RNA were studied both experimentally and theoretically. The docking calculation elucidated some structure features in dimetallic complexes that can affect TAR RNA-binding properties.
Facile synthesized Cu-SnO_2 anode materials with three-dimensional metal cluster conducting architecture for high performance lithium-ion batteries

Metal oxide anode material is one of promising candidates for the next-generation LIBs, due to its high theoretical capacity and low cost. The poor conductivity and huge volume change during charge/ discharge, however, restrict the commercialization of metal oxide anode material. In this work, we design a novel Cu-SnO_2 composite derived from Cu_6Sn_5 alloy with three dimensional (3D) metal cluster conducting architecture. The novel Cu structure penetrates in the composite particles inducing high conductivity and space-confined SnO_2, which restrict the pulverization of SnO_2 during lithiation/ delithiation process. The optimized Cu-SnO_2 composite anode delivers an initial discharge capacity of 933.7 mAh/g and retains a capacity of 536.1 mAh/g after 200 cycles, at 25 ℃ and a rate of 100 mA/g. Even at the high rate of 300 mA/g, the anode still exhibits a capacity of more than 29% of that tested at 50 mA/g. Combining with the phase and morphology analysis, the novel Cu-SnO_2 composite not only has good electrical conductivity, but also possesses high theoretical capacity (995 mAh/g), which may pave a new way for the design and construction of next-generation metal oxide anode materials with high power and cycling stability.
Synthesis and combined properties of novel fluorinated cationic surfactants derived from hexafluoropropylene dimer

Three novel fluorinated cationic surfactants were prepared by adopting perfluoro-2-methyl-2-pentene as rawsubstrate. The as-obtained fluorinated cationic surfactants exhibited excellent surface properties, all of them can reduce the surface tension of water to below 20.00mN/m at the critical micelle concentrations (CMC). The incorporation of SDS, AOS, APG or LAB into 2-(4-(3,3,4,4,5,5,5-heptafluoro- 2,2-bis(trifluoromethyl)pentyl)benzamido)-N,N-dimethylethana-mine oxide 4a could generate much lower CMC and surface tension value at the CMC than individual 4a. Especially, the surface tension values of that combined APG/4a can be reduced to 17.31 mN/m. The excellent surface activities and their remarkable compatibility to various types of hydrocarbon surfactants make them as sustainable alternatives to PFOA (perfluorooctanoic acid, C7F15CO_2H) and PFOS (perfluorooctane sulphonate, C_8F_(17)SO_3X, with X = K, Na, H).
成人Xp11.2异位/TFE3基因融合相关性肾癌1例临床病理分析

目的探讨1例成人Xp11.2异位/TFE3基因融合相关性肾癌的临床病理学特征。方法采用免疫组化及荧光原位杂交检测1例Xp11.2易位/TFE3基因融合相关肾细胞癌,分析其影像学特点、组织学特征,并复习相关文献。结果CT示右肾下极占位,考虑为透明细胞型肾癌可能;行机器人辅助腔镜下右肾肿瘤切除,显微镜下见肿瘤境界清楚,有纤维组织包膜;肿瘤细胞上皮样胞质嗜酸性,由大小两种细胞组成,肿瘤组织中见散在钙化及砂粒体形成,少数细胞含有色素。免疫表型:肿瘤细胞vimentin、E-cadherin、P504S均呈强阳性,TFE3部分阳性,其他标志物均为阴性。FISH检测:(1)可见TFE3基因断裂;(2) TFE3基因断裂阳性。结论Xp11.2异位性肾细胞癌属于罕见的恶性肾肿瘤,诊断主要依靠组织病理学特征和免疫表型及基因检测,以手术治疗为主,部分可辅助靶向治疗。
急性大血管闭塞性卒中快速再通技术的研究进展

缺血性卒中具有较高的发病率,以美国为例每年发生80万例卒中,其中新发卒中61万例,缺血性卒中占87%.大血管闭塞(指颈内动脉、大脑中动脉主干、基底动脉和颅内椎动脉)在缺血性卒中占有较高的比例,一项对2 152例急性缺血性卒中患者进行磁共振血管成像(MRA)或CT血管成像(CTA)的影像学评估发现,1 043例患者(48.5%)存在动脉闭塞,其中大血管闭塞共860例(40.0 %).大血管闭塞与卒中的不良预后(改良Rankin量表评分为3 -6分)密切相关,不能成功再通的大血管闭塞预后不良率高达91% ~95%.静脉溶栓对于大血管闭塞的再通效率低下,直径超过8 mm的血栓几乎不能被组织型纤溶酶原激活物(tissue plasminogen activator,tPA)溶解(<1%).近年来,多项大型随机对照研究证实了急性前循环大血管闭塞血管内治疗的有效性,与单纯静脉溶栓相比实现了较高的再通率和较低的致残、致死率,已成为急性缺血性卒中的主要治疗方式之-.然而,血管再通手术不同于传统手术,其再通时间对于手术效果至关重要.早期恢复脑血流是防止脑组织永久性损害的关键,再通时间与预后密切相关,快速再通技术对于接受血管内治疗的卒中患者具有重要意义.
青年解剖学实验技术人员的培养

解剖学属于形态学科,实验室教学直观性强,是解剖学教学过程中的重要环节。因此,培养合格的实验技术人员,提高教学质量就显得尤为重要。但是,对于如何最大限度地发挥青年解剖实验技术人员在实验教学中的作用,值得我们进一步探讨。
晚期肺癌程序性死亡受体-1及其配体-1抑制剂治疗现状

肺癌位居我国恶性肿瘤发病率与死亡率首位,以铂类为基础的传统化疗疗效不佳,虽然表皮生长因子受体(epidermal growth factor receptor,EGFR)-酪氨酸激酶抑制剂能够显著改善携带EGFR等基因突变肺癌患者的预后但疾病进展仍难以避免。而程序性死亡受体-1(programmed death-1 .PD-1)及其配体(programmed death ligand-1, PD-L1)抑制剂治疗是目前晚期肺癌患者有前景的治疗方案之一。
以幻听为主要症状的布鲁菌病一例

从本例中可以总结以下几点供临床参考:①布鲁菌病可能是导致器质性精神障碍的病因之一;②布鲁菌病常合并多个系统的感染,因而对于精神障碍合并发热、咳嗽、淋巴结肿大、关节疼痛的患者应警惕布鲁菌病的可能;③对于布鲁菌病导致精神障碍的患者,同时给予抗布鲁杆菌治疗,患者的精神症状得到迅速缓解,因而试验性抗布病治疗有效可能是诊断布鲁菌及导致器质性精神障碍的重要依据;④与普通精神类疾病相比,布鲁菌病导致的器质性精神障碍可能具有复发率低,易治愈的特点;⑤布鲁菌病常见的传染途径为牧区接触史,由本例及相关文献可知,布鲁菌病也可经接触及食用不洁牛羊肉传播,因此通过询问牧区接触史来排除布鲁菌病是不全面的。
四川南部地区川高参1井获煤层气高产工业气流

研究区位于四川前陆盆地南缘叙永—筠连叠加褶皱带。该区专门的煤层气资源调查与评价工作相对较少,仅在筠连沐爱井田、古叙石屏—大村井田及古蔺石宝地区等取得点上突破或进展,未上升到煤层气全面调查,也缺乏系统的煤系气资源潜力评价。本次研究的目的是系统开展四川南部地区上二叠统煤系“三气”(煤层气、泥页岩气、致密砂岩气)基础地质调查,获取资源评价基本参数,查明地质条件及资源潜力,圈定远景区,优选有利区、目标区;通过排采试验,获得高产工业气流,建设示范工程,引领当地煤层气产业发展。
The Tongliao M_S 5.3 Earthquake and Its Foreshock Determination

Taking the 2013 Tongliao M_S5.3 earthquake as a research subject,on the basis of statistical analysis of earthquake sequence using the HypoDD location method and focal mechanism solutions,the paper analyzes and discusses the relationship between the ML4.4 and M_S5.3 earthquakes. The results show that the Tongliao M_S5.3 earthquake occurred under the background of medium-small earthquakes' long-term quiescence and short-term enhancement in the epicentral area. The results of accurate seismic location shows that the Tongliao M_S5.3 earthquake sequence is distributed in the NW direction,extending 10km, and the M_L ≥3.0 aftershocks are concentrated south of the mainshock. The distance between the M_S5.3 mainshock and the M_L4.4 foreshock is about 1.8km,with a focal depth of 7.208km and 7.089km,respectively, their focal location is very close,and may have occurred on the same fault plane. The results of focal mechanism shows that the Tongliao M_S5.3 earthquake is of the strike-slip type,the focal mechanism of aftershocks are disordered,and with time lapse,the type is changed from strike-slip to thrust and normal faulting. The bigger foreshocks had similar focal mechanism and were all normal fault types,which exhibits to some extent,an obvious crustal medium anisotropy in the epicentral area before macroscopic rupturing,as represented by alignment fractures,with stress action enhanced,this“consistency”of seismic precursor regime would gestate the mainshock. According to the characteristics of temporal-spatial distribution of earthquake sequence and similarity of focal mechanism,we judge that the Tongliao M_S 5.3 earthquake sequence is a foreshock-mainshock-aftershock type.
Angio-Computed Tomograph-Guided Immediate Lipiodol Computed Tomograph for Diagnosis of Small Hepatocellular Carcinoma Lesions during Transarterial Chemoembolization

Background: The diagnosis and treatment of small hepatocellular carcinoma (HCC) play a vital role in the prognosis of patients with HCC. The purpose of our study was to evaluate angio-computed tomography (angio-CT)-guided immediate lipiodol CT (a CT scan performed immediately after transarterial chemoembolization [TACE]) in the diagnosis of potential HCCs <1 cm in diameter. Methods: This study retrospectively analyzed 31 patients diagnosed with HCCs after routine imaging (contrast-enhanced CT or magnetic resonance imaging) or pathologic examinations with undefined or undetermined tumor lesions (diameter <1 cm) from February 2016 to September 2016. After TACE guided by digital subtraction angiography of the angio-CT system, potential HCC lesions with a diameter <1 cm were diagnosed by immediate lipiodol CT. The number of well-demarcated lesions was recorded to calculate the true positive rate. The correlation between the number of small HCCs detected by immediate lipiodol CT and the size of HCC lesions (diameter >1 cm) diagnosed preoperatively was analyzed 1 month after TACE. A paired t-test was used to analyze differences in liver function. Pearson analysis was used to analyze correlation. Chi-square test was used to compare the rates. Results: Fifty-eight lesions were detected on preoperative routine imaging examinations in 31 patients including 15 lesions with a diameter ≤1 cm. Ninety-one lesions were detected on immediate lipiodol CT, of which 48 had a diameter ≤1 cm. After 1 month, CT showed that 45 lesions had lipiodol deposition and three lesions had lipiodol clearance. Correlation analysis showed that the number of small HCCs detected by lipiodol CT was positively correlated with the size of HCC lesions diagnosed by conventional imaging examination (R2 = 0.54, P<0.05). Conclusion: Immediate lipiodol CT may be a useful tool in the diagnosis of potential HCC lesions with a diameter of <1 cm.
Electrochemical Catalytic Properties of Pt/FeSnO(OH)_5 towards Methanol Oxidation

The Pt/FeSnO(OH)_5 catalyst has been prepared by depositing Pt nanoparticles on the synthesized FeSnO(OH)_5 nanoboxes and demonstrates excellent performance towards methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs). The Pt/FeSnO(OH)_5 catalyst exhibits a higher mass activity (1182.35 mA/mgPt) compared with Pt/C (594.57 mA/mgPt) catalysts. The X-ray powder diffraction, field emission scanning electron microscope, field emission transmission electron microscopy, X-ray photoelectron spectroscopy and electrochemical experiments have been employed to explore the relationships between the crystal structure and electrochemical properties. The increased activity and resistance of CO poisoning for Pt/FeSnO(OH)_5 catalyst can be attributed to the strong interaction between the transition metal in the hydroxide and Pt and the bifunctional effect. The higher relative concentration of Pt~0 in Pt/FeSnO(OH)_5 also contributes to the MOR activity. Moreover, the charge transfer resistance of Pt/FeSnO(OH)_5 is lower than that of Pt/C. Therefore, Pt/FeSnO(OH)_5 has great application prospect as a high-performance electrocatalyst in DMFCs.
Convective Heat and Mass Transfer in Magneto Jeffrey Fluid Flow on a Rotating Cone with Heat Source and Chemical Reaction

The present paper addresses the megnetohydrodynamic Jeffrey fluid flow with heat and mass transfer on an infinitely rotating upright cone. Inquiry is carried out with heat source/sink and chemical reaction effects. Further, constant thermal and concentration flux situations are imposed. Optimal homotopy analysis method (OHAM) is employed to achieve series solutions of the concerned differential equations. Important results of the flow phenomena are explored and deliberated by means of graphs and numerical tables. It is perceived that thermal boundary layer thickness possess contrast variations for the heat source and heat sink, respectively. The chemical reaction enhances the heat transfer rate but decline the mass transfer rate. Moreover, the precision of the existing findings is verified by associating them with the previously available work.
α Decays in Superstrong Static Electric Fields

Superstrong static electric fields could deform Coulomb barriers between α clusters and daughter nuclei, and bring up the possibility of speeding up α decays. We adopt a simplified model for the spherical α emitter 212 Po and study its responses to superstrong static electric fields. We find that superstrong electric fields with field strengths | E | ~ 0.1 MV/fm could turn the angular distribution of α emissions from isotropic to strongly anisotropic, and speed up α decays by more than one order of magnitude. We also study the influences of superstrong electric fields along the Po isotope chains, and discuss the implications of our studies on α decays in superstrong monochromatic laser fields. The study here might be helpful for future theoretical studies of α decay in realistic superstrong laser fields.
2018年8月计算机病毒疫情分析

2018年8月,国家计算机病毒应急处理中心共发现病毒7,292,567个,比7月上升4.2%,新增病毒56,624个,比7月上升3.1%,感染计算机11,223万台,比7月上升3.8%,主要传播途径以“网络钓鱼”、“网页挂马”和漏洞为主.
Intradermal administration of formalin to the cheek induces itch as well as pain behaviors in rats

Objective · Formalin is a classic and most widely used algogenic substance, but its itchy effect is not clear. The present study aims to explore the hypothesis that formalin may induce itch as well as pain. Methods · Flinching, as well as licking and forelimb wiping of the site of injection were counted as pain responses, whereas biting and hind paw scratching of the cheek were counted as itchy responses. To discriminate formalin-induced sensations in rats, the irritant(saline as control) was injected, and then pain and itchy responses were recorded. Results · Intraplantar injection of formalin elicited biphasic behavior responses characterized as flinching, as well as biting or licking of the hind paw without significant gender differences. Following intradermal administration of formalin to the cheek, rats exhibited episodic forelimb wiping of the cheek, representative of pain. No gender difference was noticed for this type of behavior. In addition, episodes of hind paw scratches of the cheek, representative of pruritoceptive responses, also occurred. Interestingly, hind paw scratches appeared to be more pronounced in male than in female rats. Conclusion · Intradermal administration of formalin elicits pruritoceptive as well as nociceptive responses in rats.
Evaluation of numerical wave model for typhoon wave simulation in South China Sea

The simulating waves nearshore (SWAN) model has typically been designed for wave simulations in near-shore regions. In this study, the model's applicability to the simulation of typhoon waves in the South China Sea (SCS) was evaluated. A blended wind field, consisting of an interior domain based on Fujita's model and an exterior domain based on Takahashi's model, was used as the driving wind field. The waves driven by Typhoon Kai-tak over the SCS that occurred in 2012 were selected for the numerical simulation research. Sensitivity analyses of time step, grid resolution, and angle resolution were performed in order to obtain optimal model settings. Through sensitivity analyses, it can be found that the time step has a large influence on the results, while grid resolution and angle resolution have a little effect on the results.
长链非编码RNA AC023794.4-201在喉鳞状细胞癌中的表达及临床意义

喉癌是头颈部最常见的恶性肿瘤之一,其中85%~95%为鳞状细胞癌(laryngeal squamous cell carcinoma,LSCC)。据报道早期LSCC患者的生存率远高于晚期患者。研究发现,长链非编码RNA(long non-coding RNA,lncRNA)参与调控头颈部肿瘤细胞的增殖、分化、迁移和侵袭等,发挥抑癌基因或癌基因的功能。因此,寻找LSCC特异性lncRNA作为有效的生物标志物用于LSCC的早期诊断和预后评估具有重要意义。AC023794.4-201是我们之前研究的LSCC lncRNA芯片表达谱中表达失调的lncRNA之一。本研究通过RT-PCR方法检测AC023794.4-201在92对癌组织和癌旁正常组织中的表达水平,并分析其与患者各项临床病理因素之间的关系,从而探讨AC023794.4-201在LSCC中的临床意义。
Rainfall occurrence and its relation to flood damage in China from 2000 to 2015

China is highly susceptible to flood disasters and subjected to great damage every year. Furthermore, the flood frequency has exhibited an increasing trend in recent years. Most flood events, including flash floods and river flood, are induced by rainfall. This study investigates annual variations of rainfall occurrence over China during the period from 2000 to 2015 at the national and regional scale using daily rainfall data from the Tropical Rainfall Measuring Mission. The Mann-Kendall test is performed for trend detection, and statistical data of flood damage published by China's government, including destroyed crop area, damaged buildings, direct economic loss, percentage of GDP (gross domestic product), and death toll are correlatively analysed with rainfall occurrences. The results show that storm rain events show the greatest variation among three rainfall types (moderate rain, heavy rain and storm rain). The variation coefficients of rainfall over Northeast China, North China, and Northwest China are the highest, whereas that for Southwest China is the smallest. Moderate rain, heavy rain over Central China, and moderate rain over Southwest China exhibits decreasing trends, whereas the remaining exhibit increasing trends. The correlation between the rainfall occurrences and these flood damage indices at the national scale shows that only direct economic loss has a strong positive correlation with rainfall occurrences, and the other indices have weaker correlations. The correlation is strong in three north regions, except for death toll in Northwest China. In contrast, the correlation between flood damage and rainfall is weak in East China, Central China, Southwest China, and South China. Overall, death toll is strongly correlated with the number of damaged buildings, implying that flood fatalities in China are likely associated with building collapse, and are dominated by specific extreme events. This study can provide a scientific reference for flood management in China.